Anti-Inflammatory Diet

All health care starts with diet. My recommendations for a healthy diet are here:
Anti-Inflammatory Diet and Lifestyle.
There are over 190 articles on diet, inflammation and disease on this blog
(find topics using search [upper left] or index [lower right]), and
more articles by Prof. Ayers on Suite101 .

Showing posts with label basic triplet. Show all posts
Showing posts with label basic triplet. Show all posts

Monday, July 20, 2015

HELLP, Preeclampsia, Antiphospholipid Antibodies and Basic Triplets

—-the other 200 posts —-
Clotted RBCs in Capillary
Some of my research involves the unique properties of milk and the development of the immune system, so I talk to medical people, lactation researchers and occasionally discuss the control of inflammation involved in ovulation, fertilization, implantation, gestation, labor and lactation.  It is clear to me that there are a few trends in disruption of these pregnancy processes resulting from the modern increase in inflammation and gut-related problems linked with immune tolerance.  Infertility is increasing, because women are becoming more chronically inflamed.  Miscarriages and premature births/low birth weight are increasing, because chronic inflammation enhances labor.  Pre-eclampsia (high blood pressure and protein leaking into the urine) results from chronic inflammation and omega-3 fatty acid depletion.  Now an even scarier form of pre-eclampsia, HELLP (Hemolysis, Elevated Liver enzymes, Low Platelets) is on the rise.  I want to discuss HELLP to put all of these pregnancy-related problems into perspective.


HELLP, Cause and Cure Unknown?
HELLP is an autoimmune disease and I have repeatedly discussed the cause of autoimmune diseases:  1) inflammation, 2) deficiency of Tregs (immune tolerance) and 3) antigen basic triplets (antigen presentation).  When HELLP was recently brought to my attention with a sudden rise in local hospitals, I decided to see if it could be easily explained and cured, just by examining the available medical literature.  Wikipedia indicated that the cause and cure was not known and that was confirmed by local doctors, who just treat the symptoms by early deliveries and long stays for the babies in neonatal intensive care units.  My work was cut out for me.

Autoimmune Disease with Unknown Autoantigen 
An examination of the symptoms, rupture of blood cells (fibrin production), liver damage, clotting (low serum heparin), high blood pressure (capillary apoptosis), proteinuria (low heparan sulfate (HS) to prevent protein loss), pointed to some obvious treatments and the causes.  Infertility is often treated by in vitro fertilization/insemination, supported with aspirin and heparin injections to maintain gestation.  These treatments are consistent with high levels of chronic inflammation that block implantation and stimulate labor.  Infertility is also associated with antiphospholipid antibodies.  A closer look at the antiphospholipid antibodies showed that they were directed against β2-glycoprotein-I.  So, I expected the β2-glycoprotein-I protein to be the original target for the antibodies, the initiating antigen, but when I looked up the sequence of that protein, it lacked the expected basic triplet I have found in all  other autoantigens and allergens.  This meant to me that there was a different protein with a related sequence that started the HELLP autoimmune disease.

Attack on P-Selectin Starts Immune Autoimmunity
I checked for other proteins with related sequences and basic triplets (RKR in the carboxy terminal sequence below), and found P-selectin that is produced most abundantly in liver and on the surface of blood cells.  A quick search of the literature showed that P-selectin reacts with anti-phospholipid antibodies and has a pair of basic triplets that enhance immune presentation and make this protein a strong candidate for becoming an autoantigen.  Antibodies against P-selectin will cause clotting as seen in HELLP.

ref|NP_002996.2| P-selectin precursor [Homo sapiens]:
......carboxy terminalGTLLALLRKRFRQKDDGKCPLNPHSHLGTYGVFTNAAFDPSP

Antibiotics and Liver Damage
I suspect that HELLP is caused by a combination of liver damage and prior exposure to antibiotics (or common drugs that have antibiotic activity) that cause gut dysbiosis, i.e. loss of gut bacteria that stimulate development of the suppressive part of the immune system, e.g. deficiency in regulatory T cells, Tregs.  Examples of the type of liver damage that may lead to HELLP are excessive consumption of alcohol (alcoholic fatty liver) or high fructose corn syrup (non-alcoholic fatty liver).

HELLP from Cause to Cure

  • Diet and/or infection causes liver inflammation.
  • Antibiotics/drugs and/or processed foods lacking prebiotic fiber produce gut dysbiosis.
  • Lack of gut bacteria needed for development of the immune system in the gut produces a deficiency of Tregs and dysfunction of immune tolerance.
  • Liver inflammation, deficiency of Tregs and availability of antigens with basic triplets leads to antibodies against liver proteins.
  • Chronic inflammation leads to decrease in HS production and leaky kidneys/proteinuria.
  • Chronic inflammation/liver damage produces fibrin production.
  • Fibrin production and low HS enhances clotting and leads to apoptosis/cell death in capillaries.
  • Loss of capillaries leads to high blood pressure.
  • Cure of HELLP, anti-phospholipid antibodies and pre-ecampsia, involves lowering chronic inflammation (aspirin and heparin treatment) with an Anti-Inflammatory Diet, fixing vitamin D deficiency, increasing omega 3/6 ratio,  and repairing gut dysbiosis to fix immune tolerance.
  • Without these interventions, HELLP symptoms will become more severe, especially in subsequent pregnancies and additional autoimmune diseases will develop.

Sunday, October 5, 2014

Celiac, Gluten and Trypsin Inhibitor

Wheat

Summary
Forget the gluten.  Celiac is caused by trypsin inhibitors (ATI) that were increased in wheat fifty years ago to combat pests.  Immune response to ATI spreads to include gluten and transglutaminase that perpetuates the disease.  Celiac is an unexpected consequence of traditional plant breeding that could be fixed with GMO approaches.

Plants Protect Themselves with Antibiotics, Pesticides and Trypsin Inhibitors.
Plants respond to pathogens and pests by making themselves toxic.  Thus, plants produce natural antibiotics, phytoalexins, a.k.a. phytochemicals, polyphenolics or antioxidants, to kill bacteria and fungi.  They also produce chemical pesticides and proteins, e.g. trypsin inhibitor, that block the digestion and utilization of plant proteins by insects.  One of these trypsin inhibitors makes ground soybeans inedible until it is removed in water rinses during the production of tofu.  Another of these trypsin inhibitors, in wheat, is the cause of celiac.

Plants Target the Nerves, Immune Cells and Intestines
Plants have evolved chemicals and proteins that attack and punish plant-eating animals.  A single molecule of caster bean toxin protein, for example, can kill a human cell.  Plants produce some of the most toxic molecules on earth.  The nervous system of insects and other herbivores is typically targeted by plants.  Many recreational drugs, e.g. opioids, THC, nicotine, caffeine, etc., for example, are made by plants in self defense.  Human nerves respond to these natural pesticides and the bitter taste and the vomit reflex help us to detect and avoid toxic phytochemicals.  Gluten proteins contain polyglutamine stretches of amino acids that resist digestion and bind to intestinal cells.  Seed lectins bind to the glycoproteins on the surface of the intestines and inhibit digestion.  Wheat seeds also contain an inhibitor of starch and protein digestion, the amylase/trypsin inhibitor, ATI.  ATI binds to the receptors on immune cells that trigger general inflammatory responses to pathogens, e.g. TLR4.  It is the ATI in wheat that starts an immune response to gluten and celiac.
Wheat trypsin inhibitor causes celiac and autoimmunity

ATI Increased to Make Wheat Resistant to Pests
More than fifty years ago, plant breeders began to screen wheat varieties for resistance to pests.  Breeding ultimately resulted in enhanced pest resistance that resulted from increased production of ATI in wheat kernels.  Modern wheat flour contains modest changes in gluten and other components over the last century with the singular exception of ATI, which has increased about 50 fold.  It is also interesting that ATI is a major wheat allergen.  This suggests that celiac starts as an allergy to ATI present in wheat flour.

Celiac Results from Superfine Milling of High-ATI Wheat
Wheat has been milled more and more finely to improve the shelf-life of bread flour.  The inedible bran and the germ are first removed from the wheat kernels and then the endosperm is ground so finely that the starch granules are broken.  Even "whole wheat flour" is ground in the same way and the bran and germ are simply added back to make it “whole.”  The important point here is that superfine milling results in starch that is readily digested by amylase in the small intestines, instead of acting as soluble fiber to feed gut flora.  The result of eating bread from superfine flour is that gut flora are starved for soluble fiber and the immune system is depleted of Tregs that would otherwise suppress allergy and autoimmunity.  Superfine milling of high-ATI wheat presents ATI to an immune system that is primed for allergy.

ATI is a Good Immunogen
Allergy development requires 1) inflammation, 2) an appropriate immunogen and 3) lack of Tregs (immune system cells that develop in the lining of the intestines and block allergies and autoimmunity.)  The modern milling of wheat flour eliminates a major source of soluble fiber, starves gut flora and reduces Tregs, but allergy development still requires inflammation and an appropriate immunogen.  An immunogen is a protein that will interact with cells of the immune system to produce antibodies and activate aggressive attacks.  I have found that all proteins of food or the environment, i.e. allergens, or of the body, i.e. autoantigens, that act as immunogens to initiate allergies or autoimmunity have the same sequence of three amino acids, a "basic triplet."  ATI has a characteristic basic triplet in its protein amino acid sequence and that is why it is a good immunogen to initiate allergies.

Allergy to ATI is Aggrevated by TLR Recognition of ATI
ATI enriched, superfine flour Is a powerful initiator of allergies, because it starves gut flora to block Treg production and is a good immunogen, but the immune system will still ignore ATI in the gut, unless inflammation is also activated.  Unfortunately, ATI actively stimulates inflammation of the intestines by specifically binding to TLR4, which is the receptor that also binds/recognizes the LPS of bacteria.  Thus, ATI is a way for the wheat plant to defend its seeds by triggering excessive Intestinal inflammation.  Inflammation, immunogen and Treg insufficiency is the ATI allergy trifecta.

Wheat ATI Allergy Leads to Celiac
First exposure to ATI and development of an allergy will make subsequent expose to wheat proteins more immunologically intense.  I discussed the response of the intestinal lining to gluten in previous posts.  Wheat gluten proteins are adapted to provide nutrients for growing wheat embryos and to provide defense against pathogens and herbivores.  Gluten proteins contain long stretches of amino acid glutamine, which is poorly digested by gut enzymes.  The glutamine is also converted into glutamate by the gut enzyme, transglutaminase, tTG.  Unfortunately, during the process, the enzyme is covalently connected to the undigested gluten fragments.  The allergic ATI reaction combined with gluten/tTG conjugates, leads to presentation of the gluten/tTG to the immune system and antibody production agains both gluten and tTG.  Subsequent exposure to gluten results in the autoimmune disease of celiac.

Celiac is Self-Perpetuating
The aggressive immune attack on the intestines in response to eating gluten-containing grains, is bad in itself, but it also causes a series of related autoimmune diseases.  Attack on the intestines also disrupts the development of the lining of the intestines, which in turn disrupts the community of bacteria and fungi, gut flora, that are essential for digestion of plant polysaccharides, soluble fiber, and the development of the immune system.  Gut flora dysfunction results in vitamin deficiencies, food intolerances and autoimmunity.  Thus, celiac is self-perpetuating, because it causes inflammation, immunogen presentation and Treg deficiency.

Celiac Causes Numerous Autoimmune Diseases
Celiac is often associated with other autoimmune diseases, because it causes them.  Antibodies to tTG are diagnostic for celiac and the autoimmune attack on the intestines is mediated by anti-tTG antibodies.  But anti-tTG antibodies of celiac don’t just attack the intestines, they attack any other tissues that have tTG, such as the thyroid gland and hair follicles.  Thus, it should not be a surprise that celiacs are at high risk for autoimmune disease, e.g. Hashimoto’s thyroiditis, of the thyroid gland, including both hypothyroid and hyperthyroid diseases, depending on which region of the thyroid is attacked.  Some forms of hair loss, alopecia, are also initiated by autoimmune attack on the tTG in hair follicles.  Persistent exposure of celiacs to gluten will result in a cascade of autoimmune diseases as other body antigens are presented to the immune system and tissues with those antigens are targeted and attacked to produce arthritis, vitiligo, etc.

Pest Resistance, Plant Breeding and GMO Solutions
Genetic modification of plants occurs every time seeds are planted.  Traditional plant breeding by selecting desirable individual plants grown from crosses of selected parents is one form of genetic modification.  Specifically introducing desired genes using recombinant DNA techniques is another, more controlled method.  Traditional plant breeding has systematically destroyed the diversity of crop plants by loss of genes that are not selected, but even the traits, such as pest resistance, that provide benefit, have also brought unintended consequences.  We now have grains with many desirable features of high yield and disease resistance, but they also provide increased risk of celiac, gluten intolerance and associated autoimmune diseases.  Maybe it is time to consider GM techniques as a safer alternative to fix modern wheat and to examine milling approaches to save our gut flora.

Cure for Celiac and Autoimmunity

Celiac and other autoimmune diseases are perpetuated by the presence of the corresponding autoantigen/allergen, in this case tTG and gluten proteins, and a deficiency of Tregs.  Oddly enough, some pathogens (Helicobacter pylori) and parasites (Helminth worms) stimulate Treg development in the lining of the intestines, in addition to normal gut flora, Clostridium spp.  It may be the relative absence of pathogens and parasites in affluent societies that reduces Tregs and enhances the incidence of allergies and autoimmunity.  Antibiotics and the antibiotic activity of pharmaceuticals in general may also contribute to Treg deficiencies by damage to gut flora.  Clearly, the repair of gut flora and reestablishment of the associated immune system will go a long way toward curing autoimmune diseases such as celiac.  Celiac, however, provides the added complexity that it damages the ability of the intestines to maintain a functional gut flora.  Thus, the cure for celiac would require simultaneous repair of both the gut and its flora, e.g. by a  fecal transplant and supportive diet containing numerous soluble fibers to which the donor flora have been previously adapted, i.e. lacking antigenic triggers.

Thursday, September 11, 2014

Peanut Allergy Cause and Cure

Summary:  The cure for peanut allergy should follow naturally from knowledge of the cause.  Since most allergies and autoimmune diseases result from the combination of 1) inflammation, 2) breakdown of immunological tolerance and 3) presentation of a primary immunogen, it follows that some types of peanut allergy are based on a continued problem with immune tolerance and fixing that defect should eliminate an allergic response to peanuts.  The current cure to resurrect immune tolerance is by enhancing regulatory T cells (Tregs) in the gut using resistant starch to improve the growth of Clostridia in the gut.

Peanut allergies are dangerous and this post does not advocate any medical treatments, but rather attempts to explain the cause and cures of allergies.

Just Treat the Immunological Tolerance Problem Instead of Mast Cells
Most people in fear of anaphylaxis from peanut dust, just try desperately to avoid peanuts in any guise.  That avoids the problem, but why not cure the allergy?  Recent research shows that peanut allergens can be prevented from establishing an allergic response in mice by addition of Clostridium species of bacteria in the gut flora.  It was shown that the Clostridia increased Tregs (regulatory T cells responsible for immune tolerance) in the lining of the intestines via interleukin 22 production.  So the cure to some peanut allergies may be increasing Tregs and fixing tolerance.

I Said It All Before
It is not a large step to combine my previous posts covering potato resistant starch for treatment of deficiencies of immunological tolerance with my explanation of the cause of allergies and autoimmunity to provide a simple explanation of the cause and cure for some peanut allergies.

Peanut Allergen is a Typical Bean Storage Protein Except for the Basic Triplet
It is not difficult to find out why peanuts are allergenic.  I just went to the National Center for Biotechnology Information (NCBI) web site and queried the protein sequence databases for “peanut allergen.”  Here is the complete amino acid sequence (each of the 20 amino acids of the protein is assigned a letter) of the major peanut [Arachis hypogaea] allergen:

MMVKLSILVALLGALLVVASATRWDPDRGSRGSRWDAPSRGDDQCQRQLQRANLRPCEEHMRRRVEQEQEQEQDEYPYSRRGSRGRQPGESDENQEQRCCNELNRFQNNQRCMCQALQQILQNQSFWVPAGQEPVASDGEGAQELAPELRVQVTKPLRPL

The triplet of basic amino acids (R=arginine, K=lysine), RRR in this case, which is found in all allergens and autoantigens, is highlighted in red.  If you eat peanuts with an inflamed gut and you have wiped out your Clostridia and associated Tegs with antibiotics, you have a good chance of developing autoimmunity, as well as a peanut allergy.  The cause of allergies is that simple and the cure is equally simple.

Shellfish Allergy Shows the Relationship between Allergy and Autoimmunity
I ran across a list of other food allergens when I was checking up on peanuts.  Shellfish was listed as another of the big allergies.  I looked up “shellfish allergen” and ran into thousands of entries.  The first couple of dozen proteins lacked the characteristic basic triplet, so I had to step back and try to guess the most typical shellfish for first exposure, i.e. the primary immunogen.  All of the other shellfish allergens were various versions of the muscle protein, tropomyosin, so I looked up “shrimp allergen.”

MDAIKKKMQAMKLEKDNAMDRADTLEQQNKEANNRAEKSEEEVHNLQKRMQQLENDLDQVQESLLKANIQLVEKDKALSNAEGEVAALNRRIQLLEEDLERSEERLNTATTKLAEASQAADESERMRKVLENRSLSDEERMDALENQLKEARFLAEEADRKYDEVARKLAMVEADLERAEERAETGESKIVELEEELRVVGNNLKSLEVSEEKANQREEAYKEQIKTLTNKLKAAEARAEFAERSVQKLQKEVDRLEDELVNEKEKYKSITDELDQTFSELSGY

Note the predicted basic triplet in red.  Since I was on a roll, I also checked out related tropomyosin sequences in humans:

MDAIKKKMQMLKLDKENALDRAEQAEADKKAAEDRSKQLEDELVSLQKKLKGTEDELDKYSEALKDAQEKLELAEKKATDAEADVASLNRRIQLVEEELDRAQERLATALQKLEEAEKAADESERGMKVIESRAQKDEEKMEIQEIQLKEAKHIAEDADRKYEEVARKLVIIESDLERAEERAELSEGKCAELEEELKTVTNNLKSLEAQAEKYSQKEDRYEEEIKVLSDKLKEAETRAEFAERSVTKLEKSIDDLEDELYAQKLKYKAISEELDHALNDMTSM

Once again the basic triplet indicated that there was a related human tropomyosin that could interact with antibodies to the shellfish allergen or could be an autoantigen participating in autoimmune diseases.  So I checked PubMed for “tropomyosin autoantigen” and quickly found that antibodies to tropomyosin are important in ulcerative colitis (UC).  Thus, shellfish allergy may be an indication of an underlying predisposition to UC.  And, the traditional cure for allergy by injection with small amounts of the allergen to convert from IgE to IgG, would convert a shellfish allergy into UC.

Avoiding Allergens Makes No More Sense Than Trying to Avoid Autoantigens
To fix allergies, it is necessary to eliminate the cause and block perpetuation of the condition.  The cause is based on 1)inflammation, 2) broken immune tolerance and 3) primary immunogen.  Peanuts are the primary immunogen, but that is unimportant if the causing conditions are eliminated and tolerance is reestablished.  Clearly, if immunological tolerance is reestablished, then it's just a matter of time before peanuts are no longer a problem, because increasing Tregs will silence the dramatic immunological response to peanuts.  Tolerance is based on Tregs and Tregs develop in the intestines in response to Clostridia feeding on soluble fiber/resistant starch.

Curing Peanut Allergies is Based on Repairing Gut Flora
There are a couple of hundred different species in the pounds of bacteria in the healthy human gut.  Most of those bacteria require soluble fiber that is systematically removed during food processing.  For most people, the cure for peanut allergies will be resistant starch/Clostridium therapy, followed by further repair with fermented foods that provide the typical lactic acid bacteria and soluble fiber along with companion bacteria that can recolonize the gut.  The cure for many allergies and autoimmune diseases is just to eat a couple of tablespoons of resistant starch each day and if needed, supplement with probiotics containing Clostridium butyricum.  If there is severe dysbiosis, as indicated by constipation, then fixing the gut flora is a little more difficult, but for most people cures are much cheaper and effective than just treating symptoms.

A guide for the use of resistant starch is provided by Richard Nikoley, et al. at Free the Animal.

Monday, March 24, 2014

200th Post — Diet, Inflammation, Disease & Gut Flora

all 200 Posts
I started posting to Cooling Inflammation on 21 Aug, 2008 with How Your Diet Makes You Sick or Healthy.  My impetus for writing was my growing awareness that diet was the major reason why people were sick, and that health myths were preventing people from being healthy.  Inflammation originated by diet-inflicted injury and people attributed their sickness to genetics, environmental toxins and pervasive pathogens. 

My Path to the Obvious
My research background started with plant biochemistry, including carbohydrate structural analysis and polyphenol chemistry.  At that stage I was interested in understanding how plants protected (phytoalexins) themselves from pathogens, and I expected to use this perspective to explore human innate immunity.  From there, I went on to enzymology and protein characterization, biofilm structure, plant genetic engineering and breeding, monoclonal antibody production, mycotoxin detection, stem cell analysis, passive immunity in neonates, computational modeling of collagen and heparin binding, and heparan sulfate proteoglycan inhibition by inflammation.  These were temporary foci and the research imperatives, in retrospect, prevented me from seeing the bigger pictures, although they did leave me with a broad skill set.

Perspective: Water and Surface Tension
When I finally decided to slow down, smell the flowers and start having kids, I switched from research to teaching, from university to small liberal arts college.  For the first time, I actually thought about what I was teaching and my first revelation was that after teaching biochemistry for twenty years, I didn’t understand water and surface tension.  I could provide the platitudes from the Molecular Biology of the Cell, but I couldn’t do it mechanistically with colliding, sticky, energetic water molecules in my mind or at the blackboard.  I had to develop functional explanations of hydrogen bonds, entropy and thermal energy, that translated into the structuring of a layer of water molecules responsible for hydrophobic interactions and surface tension.  I extended that to include an explanation of the two layers of water holding together cytoplasmic membranes, the tube of structured water that holds together the cylinder of stacked bases in DNA or the shrink wrapping water layer surrounding proteins.

Perspective: Heparin Binding and Amphipathy of Sugars and Basic Amino Acids
As the kids got older, I started to dabble in research again and my expertise in carbohydrate chemistry led me into cartilage (mostly the glycosaminoglycan, GAG, chondroitin sulfate) synthesis and ultimately another GAG, heparan sulfate proteoglycans (HSPGs).  I was attracted to the dynamic HSPGs, that recycled with a half-life of six hours and formed layers around chondrocytes that secreted cartilage as they burrowed/ate through living cartilage.  I learned that the heparin filled granules of mast cells could be stained with berberine, which similarly stained the heparin in basement membranes of tissues and amyloids of Alzheimer’s, atherosclerosis and diabetes.  I was led by protein modeling of collagens to the binding of heparin to proteins and the revelation that basic amino acids (heparin binding domains) and sugars (heparin) are amphipathic, i.e. they have both hydrophobic and hydrophilic regions.  This is also true of plant polyphenolics.  Thus, polyphenolics, “basic” amino acids, “hydrophobic” amino acids, and sugars will all stack together.

Amphipathic Interactions
  • DNA bases stack.
  • Heparin binding sites of proteins are basic amino acids (Arg, Lys).
  • Sugar binding sites in enzymes and lectins are hydrophobic amino acids (Trp, Tyr, Phe).
  • Nuclear translocation signals, quartets of basic amino acids, bind to receptors with tryptophans.
  • Tryptophans are the most highly conserved amino acids in the same proteins across great evolutionary distances.
  • Hydrophobic bonding between tryptophan and a sugar or basic amino acid is ten times greater than hydrogen or ionic bonds.
  • Tryptophan/Arginine ladders zip regions of proteins together.
  • Polyphenols can disrupt cellular protein interactions by binding to receptors for carbohydrates/heparin, steroid hormones, amyloids, etc.
  • Heparin holds dozens of hormones to receptors and changes the shapes of proteins, e.g. clotting and complement.
  • Most nucleic acid binding proteins will also bind to the more negatively charged heparin.
  • Bacteria use a pair of lysines to mark proteins for export.
  • Peptides containing the basic amino acids of heparin binding domains (also produced by the specificity of gastric proteases) are antimicrobial, e.g. defensins, and so are plant polyphenols.
  • Many drugs are active because they are domesticated plant polyphenols.


From Heparin Binding to Antigen Presentation
As soon as I realized that basic amino acids were involved in heparin binding, I started to look for the basic amino acids (R for arginine and K for lysine in amino acid sequences) in proteins known to bind heparin.  After study of hundreds of structures, it became obvious that heparin binding domains were simply a pair of basic amino acids (RR or KK or RK) with another within a distance of six amino acids.  No particular structure was necessary, as I later deduced, since binding to the heparin provided the structure.  In fact, in many X-ray crystallographic structures, the heparin binding regions on the surface of the protein are missing, because they are not in a defined shape.  I suspected that protein antigens involved in autoimmunity and allergy might be brought into cells for presentation to the immune system by interacting with HSPGs on the surface and so started to check them out for heparin binding domains.  I was very skillful at picking out pairs of Ks or Rs within sequences of hundreds of amino acids by that time, so I was shocked to see that the first dozen antigens that I checked, all had a triplet of basic amino acids.  I had discovered that autoantigens and allergens utilize a basic triplet analogous to the basic quartet used in nuclear translocation!  This also explained why proteins that interact with nucleic acids and are transported into the nucleus with a basic quartet are also prominent autoantigens.

Gut Flora and Immunity
Twenty years ago I read a curious description of leprosy that said that the course of infection could be either innocuous or devastating depending on whether the aggressive or the suppressive part of the immune system dominated.  I remained perplexed until I realized that diet and gut flora were the major determinants.  I was aware of the importance of diet at the outset of this blog, because it was clear that diet trumped genetics.  I was also aware thirty years ago in my studies of passive immunity, that milk contained bifidus factor, now known to be milk oligosaccharides, that controlled the growth of Lactobacilli that in turn controlled the development of the neonate immune system.  It was also known that bacteria-free mice had impaired immune systems.  It still took me several years for the relationship between diet, gut flora and immunity to make sense.  I began searching the literature for connections between gut flora and development of the immune system and soon noted experiments that linked filamentous bacteria with aggressive components and Clostridium spp. with Tregs.  A further refinement was linking resistant starch, a soluble fiber, with Clostridium.
My Current Views are Summarized in Three Health Diagrams

Diet, Gut Flora, Inflammation, Antigen Presentation, Tregs and Autoimmunity
Protein from the body and from food don’t normally stimulate the immune system, because there in no inflammation, the proteins lack basic triplets that enhance presentation, and antibody production and aggressive T cells are suppressed by Tregs.  Diet can throw the balance toward autoimmunity and allergy, by producing inflammation, e.g. hyperglycemia/AGE or high omega-6 fatty acids/prostaglandins, and starving gut flora needed for Treg production by eating processed food lacking soluble fiber.  The combination of inflammation and Treg deficiency causes proteins, either self or potential allergens, which have basic triplets to be presented to the immune system and stimulates attack by the immune system.

The Cure is to Cool Inflammation and Stimulate Tregs with Diet and Bacteria
I have provided an outline with The Anti-Inflammatory Diet to avoid inflammation, to stimulate existing gut flora with soluble fiber and encourage Treg production.  Mark Sisson, on Mark’s Daily Apple has provided an excellent dietary guide that also provides starch guidelines.  If you already have symptoms of autoimmune disease or allergies, then Richard Nikoley provides gut flora repair advice on Free the Animal, and Dr. B G provides more details on Animal Pharm.


Autoimmunity and allergies are not genetic destiny and they can be cured with diet and bacteria.

Saturday, March 15, 2014

Health Diagrams II — Curing Autoimmunity and Allergies

In this second in a series of posts explaining the concepts that I think are central, but misunderstood, about health, I am focusing on how diet and gut flora impact the immune system and cause autoimmunity and allergies.  This cause also suggests a simple cure.
Gut Flora to Tregs to Suppression of Autoimmunity
It is important to understand at the outset that autoimmunity and allergies are caused by a damaged immune system, and repairing the damage cures the diseases.  Damage to the immune system typically represents a break in the continual development of immune cells in the lining of the intestines.  Immune cell development in the gut is dependent on bacteria, the gut flora.  Damage to the gut flora, e.g. by antibiotics, processed foods that lack flora feeding fiber or extreme diets, disrupts development of immune cells.  Typically, loss of the immune cells that keep the aggressiveness of the immune system in check, regulatory T cells or Tregs, results in autoimmunity.  Fix the gut flora and autoimmunity recedes.  


Health Requires Suppression of the Aggressive Immune System
For simplicity, I am focusing on the T cells of the immune system that develop in the intestines and either kill other human cells that are dangerous, e.g. virus-infected or cancer cells, or provide protection by regulating the aggression, Tregs.  Normal functioning of the immune cells permits elimination of damaged or dangerous human cells, while at the same time avoiding rampages of lethally armed T killers.  Examples of untamed T killers in action are degenerative autoimmune diseases, such as arthritis, asthma, prostatitis, celiac, Hashimoto’s thyroiditis, type I diabetes, inflammatory bowel diseases and atherosclerosis. 

Milk Births Baby Immune System
It should not be surprising that the focus of immune system development is the gut.  We start as babies with explicit links between nourishment and immunological protection.  Milk connects the immune systems of mother to baby.  Immune cells from the mother are transferred in milk and colonize the respiratory and digestive system of the baby — the mother’s immune system coats and buffers the baby’s exposure to the world.  Milk hormones close the baby’s gut and milk bacteria are the first probiotics that exploit the milk prebiotics (bifidus factor, human milk oligosaccharides) to produce a gut flora.  [Also note that most commercial probiotics are adapted to grow on cow’s milk and hence these dairy probiotics do not survive in adults.]  The lymphatic system of the breast terminates at the nipple and samples antigens/pathogens from the baby’s mouth, resulting in baby-specific secretory antibodies that return in the milk.  Milk supports a starter set of gut flora, essentially dairy probiotics, that stimulates development of the baby immune system, but inhibits adult gut flora that would digest the protective components of milk.  Formula, on the other hand, is inflammatory to the baby gut, because it supports adult gut flora before the immune system is ready.  Inflammation and stimulation of innate immunity is sufficient, if supported with high levels of sanitation, to permit survival of babies fed formula.  Milk of any type is incompatible with adult gut flora, so breast milk will attack adult gut flora and adult gut flora will digest and inactivate the otherwise beneficial components of the milk.
Aggressive and Suppressive Cells of Immune System Develop in Intestines
Gut bacteria are required for the development of immune T cells in the lining of the intestines.  Mice grown without gut flora do not have functional immune systems.  In humans, extensive antibiotic treatment produces defective immune systems that are either overly aggressive, i.e. autoimmune, or susceptible to infection and cancer.  They can’t be both.  Aggressive T killers are stimulated to develop by filamentous bacteria and Tregs develop in response to members of the Clostridium family.  In a healthy body, there is a balance between aggression and suppression; there are functional defenses against infection and cancer, while also avoiding autoimmune disease and allergies.

Suppressive Tregs are Deficient in Autoimmunity
Immune cells result from replicative divisions of stem cells.  Antibody producing B cells are produced through a million random rearrangements of antibody genes and those B cells producing antibodies against common self proteins are killed (clonal deletion).  Similarly, T cells are produced by rearrangements of receptors and those that would recognize self are eliminated.  The T cells then migrate to the intestines where they can develop into killer T cells or Tregs, in response to gut flora.  The Tregs act to suppress killer T cells that mistakenly recognize healthy self cells.  Thus, the initial elimination of self-attacking T cells or for B cells that produce antibodies that bind to normal cells, is not perfect and the Tregs are needed to avoid the mistakes.  Tregs are necessary to avoid the immune attack on healthy cells that is the basis of autoimmunity.

Autoimmunity Starts with Inflammation, but Requires Deficient Tregs
Bacterial or viral infections, or physical damage causing inflammation is the first step in autoimmunity.  It is the inflammation that initiates the interactions between proteins, autoantigens, of normal cells and cells of the immune system that bind, internalize, fragment and present the antigen fragments/peptides to activate B or T cells with corresponding receptors.  The activated B cells make antibodies specific for the antigen and the T cells will kill cells displaying the antigen.  It is interesting that most proteins are not autoantigens and are never involved immune reactions.  Only proteins with an unusual triplet of basic amino acids, similar to the quartet of basic amino acids used to transport proteins into the cell nucleus, are candidates to be autoantigens or allergens.  In fact, since nuclear proteins already have a quartet, i.e. the nuclear localization signal, they are common autoantigens.  The last requirement for autoimmunity is a deficiency in Tregs, because if the Tregs are functioning, they will block attack on healthy cells.  Treg deficiency usually results from loss of the type of gut bacteria that stimulate Treg production in the lining of the intestines, i.e. species of Clostridium.

Hospitals are Notorious for Clostridium difficile Infections
Fecal transplants are now recommended as a safe and efficacious treatment for C. diff hospital infections.  That makes sense, because hospitals are where antibiotics are routinely used and C. diff can only infect people missing their healthy species of Clostridium.  Thus, the hospitals wipe out the gut flora with antibiotics and then recolonize them with their own antibiotic resistant C. diff.  More antibiotics can’t fix it, but providing healthy gut flora (transplant) can.

Autoimmune Diseases are Treated/Exacerbated with Antibiotics
Both the aggressive and the suppressive immune cells require gut flora, so after initial antibiotic treatment wipes out bacteria required for suppression and results in autoimmunity, the remaining aggressive half of the immune system can be eliminated by blasting the remaining gut flora with more antibiotics.  Of course this will leave a highly compromised, incompetent immune system that will ultimately yield more extreme symptoms.  This is the typical medical progression for Crohn’s disease, for example.  The alternative is just fixing the gut flora to begin with and curing autoimmunity.

Cure Autoimmunity by Feeding Clostridium Resistant Starch
Autoimmune diseases, by their symptoms, show that sufficient gut flora to stimulate the aggressive half of the immune system is still present.  What is missing are the Clostridium species that convert soluble fiber, such as resistant starch, into short chain fatty acids, e.g. butyrate.  Patients treated with antibiotics usually walk away from the hospital with a suggestion to eat some yogurt to repopulate their missing gut flora.  Unfortunately, dairy probiotics don’t survive in the gut and cannot repair the gut flora and immune system.  The result, after the gut fails to repair and the immune system crashes, is autoimmunity.  There is a more appropriate possibility to avoid or fix autoimmunity.  Some people suffering from autoimmunity (and with remnants of their gut flora intact) have simply fed their gut flora on resistant starch and achieved complete recoveries.  Others fail to respond, because their gut flora is too severely damaged and necessary bacterial species are gone.  Those individuals need to eat the missing species of bacteria and some probiotics (more common in Asia) contain Clostridium species.  Consistent with this use of soluble fiber to feed gut bacteria that produce butyrate and stimulate the suppressive immune system are reports of healing by combining potato starch (RS) and probiotics with Clostridium butyricum (Probiotic-3).  Repair of the suppressive immune system by repair of gut flora (including fecal transplants) and feeding gut flora with appropriate soluble fiber, may be a general approach to the cure of most autoimmune diseases and allergies.

Thursday, January 9, 2014

Transglutaminase, Gluten, Celiac, Inflammation, Autoimmunity


The point of this post is that the intestines produce an enzyme, transglutaminase (TG) that normally protects the gut from toxic plant proteins, such as grain gluten, but modern food processing and antibiotics corrupt digestion of gluten to produce intestinal inflammation and a series of related autoimmune diseases including celiac, thyroiditis, diabetes, baldness and atherosclerosis. 

Transglutaminase Links Proteins Enzymatically
Transglutaminase is a ubiquitous enzyme produced in the intestines, thyroid, heart, skin, hair follicles, etc.  This enzyme attaches to a protein (TG + ProA ~~> TG-ProA) via amino groups extending from some of the protein's amino acids, e.g. lysine or glutamine, and then the enzyme replaces itself by another protein leaving the two proteins crosslinked (TG-ProA + ProB ~~> TG + ProA-ProB).  Another alternative reaction is to leave the original glutamine without its amino group to yield glutamic acid residues.

Linking Proteins Makes Connective Tissue Tough
Transglutaminase is useful to crosslink the proteins in connective tissue.  Proteins in basement membranes form a matrix by binding to the heparan sulfate sidechains of another basement protein, perlecan.  The heparin-binding domains consist of basic amino acids that TG can react with to crosslink the proteins.

Linking Pathogen Proteins
Transglutaminase is also produced to crosslink the DNA/heparin/matrix polysaccharide-binding domains of pathogenic bacteria leading to aggregation, localization and death of the bacteria.  Inflammation resulting from activation of the inflammatory transcription factor, NFkB, stimulates production of TG.

Gluten is a Plant's Way of Saying "Don't Eat Me!"
Gliadin is a protein component of gluten that contains long stretches of glutamine residues, i.e. it is a polyglutamine protein similar to the protein that causes Huntington's disease.  Gliadin is an advantage as a storage protein for grain, because it is aggregated by the TG that protects the lining of the intestines of herbivores, such as humans, makes the animal sick and thereby discourages eating the grain.  Aggregation of gliadin/gluten inhibits digestion of the grain protein and can leave TG bound to gliadin.  Conversion of the polyglutamine stretches to polyglutamic acid stretches that are negatively charged, produces proteins that will bind to the positively charged heparan sulfates that circulate along the surface of intestinal cells leading to damage and inflammation.

Basic Triplet Leads to Antibody Production
Transglutaminase is also transported into cells, because it contains a region with a triplet of basic amino acids (...EPKQKRKLVA...).  This internalization probably contributes to enhanced presentation of TG to the immune system for subsequent antibody production.

Transglutaminase is Inflammatory
Transglutaminase interaction on the surface of cells also activates, NFkB, the transcription factor responsible for inflammation. Thus, TG turns on inflammation and part of inflammation is the activation of the innate immune system that includes production of TG.  This circular activation may produce autoinflammation that is associated with various forms of inflammatory bowel diseases.

Gluten Sensitivity is Normally Controlled By Gut Flora
Gluten sensitivity expressed by most people, is the intestinal response to the toxicity of gluten as it interacts with TG and causes inflammation.  This inflammation will also result in immune presentation of both gliadin and TG, and production of antibodies to both. Antibody production will normally be controlled by regulatory T cells of the immune system, unless spreading inflammation in the gut and/or antibiotics destabilizes the gut flora and compromises regulatory T cell development in the intestines.  

Anti-Glutaminase Antibodies Attack the Gut
Celiac results from uncontrolled production of antibodies to gliadin and TG with attack by the immune system on the aggregated gliadin/TG on the surface of the intestinal epithelium.  Celiac flare ups in response to eating even small quantities of gluten lead to further inflammation of the gut and further disruption and simplification of gut flora.

Celiac Leads to Thyroiditis and Much More
Transglutaminase is also produced by the thyroid and celiac will develop into a more generalized autoimmune disease that results in Hashimoto's thyroiditis.   TG production in the skin can result in skin rashes and may contribute to rosacea.  The base of hair follicles contains TG involved in hair production, and may contribute to some forms of hair loss.  Another substantial worry about the sequelae of celiac and gluten intolerance is the presence of TG in coronary arteries.

Antibiotics are Part of the Gluten Problem
Celiac and gluten sensitivity seem to be increasing with modern processing of grains and increased use of antibiotics.  Wheat has been gradually changed by traditional breeding, but genetic engineering has not yet been developed for wheat.  So, at least in this case, GM wheat cannot be part of the problem.  Many recent studies show that antibiotics profoundly and permanently alter gut flora.  As a result, the immune system, which is dependent on gut flora diversity is compromised, and various forms of autoimmunity and allergies develop.

Super Fine Flour Damages Gut Flora
Germ and bran are removed from all wheat before it is ground.  This is true even for whole grain flours, which have some of the germ and bran added back after milling.  Modern milling may be part of the gluten problem, because the flour is ground so fine that the grains of starch are broken.  Broken starch grains are digested by pancreatic amylases in the upper intestines, whereas some of the starch from intact grains is digested by gut flora in the colon.  Thus, modern wheat flour fails to feed gut flora like soluble fiber to produce short chain fatty acids, e.g. proprionic acid that supports Treg development; modern superfine flour supports autoimmune diseases and allergies.

Cultural Practices Make Gluten Safe
Wheat has been bred to produce bread as fast as possible from superfine flour.  This rapid bread production eliminates the exposure of gluten to enzymes from both germinating wheat seed and fermenting bacteria, which are part of traditional bread making.  Coarsely milled, traditional flour responds to soaking in water by activating enzymes that partially digest gluten, since gluten is a storage form of amino acids destined for the seedling.  Sour dough starter, a mixture of bacteria that can ferment the starch and gluten into short chain fatty acids and bubbles of carbon dioxide, has been used traditionally to provide leavening and flavor to bread.  Both flour and bacterial enzymes modify the structure of gluten to render it less toxic to the intestines.  Cultural traditions insured that gluten would be systematically detoxified by enzymes during hydration and fermentation of dough prior to baking.  Modern processing leaves wheat gluten in bread unmodified and toxic.

Prevention and Cure:  Eliminate or Detoxify Wheat and Add Bacteria
Preventing and curing diseases associated with gluten and transglutaminase is simple.  Eliminating wheat would do the trick.  Unfortunately, wheat is the mainstay in many parts of the world.  Fortunately, gluten intolerance is not uniformly observed where wheat is eaten.  This indicates that there are potentially safe ways to eat wheat and bread.  I gained insight into how to eat wheat safely from two books that were recently published:  Cooked by Michael Pollan and Artisan Bread in Five Minutes a Day by Jeff Hertzberg, MD and Zoë François.

Michael Pollan has recently become interested in gut flora and his book revealed how he built up a healthy gut flora eating homemade fermented food and compromised his work with antibiotics.  The major breakthrough that I made by reading Cooked was based on his experiments in baking whole wheat bread.  He hydrated the flour first and then used sour dough starter for lengthy fermentation.  This was the same process that I had used to make great loaves of bread (photo above) using Jeff Hertzberg’s directions in Artizan Bread in Five Minutes a Day.

The answer to gluten intolerance and most autoimmune diseases amounts to eliminating wheat or treating wheat in a safe, traditional process that inactivates the toxic properties of gluten; and maintaining a healthy gut flora (probiotics are not enough) with hundreds of different species of bacteria that promote the development of the suppressive immune system mediated by regulatory T cells:

Safe Traditional Bread 

  • Remove bran and discard as toxic insoluble fiber.
  • Grind wheat to retain starch grain structure.
  • Soak flour to hydrate and activate wheat enzymes to start digestion/detox of gluten.
  • Ferment dough with bacteria (sour dough starter) to continue digestion/detox of gluten.
  • Bake.

Develop Healthy Gut Flora and Suppressive Immune System

  • Avoid antibiotics that kill bacteria.
  • Avoid hygiene practices, e.g. antibacterial soaps, bleaching surfaces, closing toilet covers, etc. that eliminate sources of healthy bacteria.
  • Kiss your loved ones and pets, and encourage everyone to garden/play in the soil (an excellent source of thousands of different species of bacteria.)
  • Recruit healthy gut bacteria by eating a variety of homemade fermented vegetables. My most highly recommended source is my friends at: http://www.fermentista.us
  • Remember that cooked or pasteurized foods do not contain useful bacteria.
  • Remember that dairy probiotic bacteria cannot live in the human gut and can only provide a temporary help to the immune system.
  • Limit the variety of foods that are consumed and gradually change with the seasons to avoid rapid changes in nutrients to which gut flora cannot adapt.  Food intolerances indicate maladapted gut flora.
  • Constipation indicates dysfunctional gut flora and a compromised immune system.

Monday, December 23, 2013

Dr. Oz’s Pain: Constipation and Bursitis


Dr. Oz has complained several times about his constipation and the pain he feels in his shoulders during surgery.  He has recommended numerous treatments.  Since I feel a friendly affection toward Mehmet after talking/shouting at his image on the screen for hours, I think that I should give him some advice to relieve his pain.

Hot, Cold, Topical Treatments Are Effective, but Don’t Penetrate Themselves
Dr. Oz keeps talking about how various topical applications penetrate the skin.  He has even recommended the use of an electrical system to carry pain relieving steroids into his tissue by what looks to be electrophoresis.  This is dubious.  I would recommend that he stick to the topical chemicals, e.g. capsaicin, menthol, that target the hot and cold sensors of the superficial layers of the skin and result in deep penetrating nerve signals that trigger anti-inflammatory responses in the underlying bursa.

Constipation Is Caused by Damaged Gut Flora or Dysbiosis
Dr. Oz, like most physicians, does not usually explain the causes of diseases, such as bursitis.  Unfortunately, when he tries to explain problems, such as constipation, he overlooks important aspects of the problem for a facile physical model.  In the case of bursitis, it is important to realize that the patient, Dr. Oz, is also constipated.  Constipation can be aggravated by dehydration or “holding it”, but in Dr. Oz’s case, the combination of bursitis, an autoimmune disease, with constipation (and gas) suggests the more complete explanation of dysbiosis or damaged gut flora.  Dysbiosis is what causes constipation, because bowel stools, poop, is mostly packed, hydrated bacteria that grow in the colon by digesting soluble fiber.  If you eat an apple a day, there is enough pectin and other plant polysaccharides, i.e. soluble fiber, to increase the volume of the stools to make one regular.  [Don’t be confused by the misconception promoted by Dr. Oz that the volume of stools results from insoluble fiber, such as in whole grains.  The husk part of whole grains is useless or unhealthy and grains in general are not needed for a healthy diet.]  

Flush Toilet Hero
Dr. Oz’s constipation suggests a damaged gut flora.  Since he is a physician, one would suspect that he has used antibiotics in the past few years and wiped out essential types of gut bacteria.  Dr. Oz probably followed his own advice and attempted to patch up his damaged gut flora with probiotics.  Unfortunately, as I have repeatedly explained, dairy probiotics don’t survive in the gut and cannot repair damaged gut flora.  But Dr. Oz is even harder on his gut flora.  He has recommended the use of colloidal silver throat spray when he has been exposed contagious germs.  Silver, although ineffective for its intended use, is very toxic to gut flora after it is swallowed.  Dr. Oz also subscribes to numerous approaches to house and body hygiene, which are probably occupational hazards for surgeons.  Hygiene is the enemy when it comes to ingesting bacteria lost to antibiotics.  The atomizing flush toilet is my gut flora hero for spreading contagious health.

Damaged Gut Flora = Damaged Immune System
Constipation is bad enough, but damaged gut flora can mean that some of the bacteria needed for the gut-based development of cells regulatory T-cells (Tregs) that keep the immune system under control, are missing.  Constipation can lead to deficient Tregs and that means a major predisposition to autoimmune disease and allergies.  [Fecal transplants cure autoimmune diseases and allergies.]  Antibiotics, silver, hygiene excesses and constipation suggest to me that Dr. Oz has been cruising toward some rude immunological sequelae.

Autoimmunity Results From Antibiotics, Dysbiosis and Compromised Tregs
Autoimmune diseases result when a trifecta of inflammation, compromised Tregs and appropriate antigens occurs.  Normally physical damage, such as abusive shoulder exercise, results in inflammation as the first step in healing.  The inflammation can rev up the immune cells in the local area of tissue damage and some of the proteins, such as lubricin, which lubricates the bursa, may have basic triplet amino acid sequences that lead to presentation to immune system cells.  But no antibodies against self tissues are produced, because the Tregs stop the process.  Healthy gut flora produce healthy Tregs and block autoimmunity.

Dr. Oz abuses his shoulder bursa during surgery, but it can’t heal properly, because he has damaged his gut flora and compromised his Tregs.  The result is the autoimmune bursitis from which he now suffers.  He can reduce the symptoms and inflammation with topical anti-inflammatory natural chemicals, but he needs to repair his gut flora to repair his Tregs and reduce autoimmunity.  In the mean time, he is contaminating his local environment, family and friends with his unhealthy bacteria.  I wonder if Dr. Oz’s friend, Dr. Mike Roizen also suffers from autoimmune diseases?

Prescription to Repair Gut FloraAnti-Inflammatory Diet, Soluble Fiber, Fermented Vegetables, Less Hygiene

KEEP YOUR TOOTH BRUSH NEAR THE OPEN TOILET 

Thursday, December 19, 2013

Antibiotics, Gluten, Hashimoto's Thyroiditis and Baldness

My impression is that Hashimoto's is caused by a combination of an initial immune attack on the thyroid and incompetent regulatory T cells.  In most cases the immune attack on the thyroid is a secondary consequence of celiac/gluten intolerance, in which anti-transglutaminase antibodies attack transglutaminase bound to gluten in the intestines.  Transglutaminase  is an enzyme that is also produced by the thyroid (and hair follicles) and attack by celiac antibodies can enhance or inhibit thyroid hormone production (or baldness.)  Both Hashimoto's and celiac do not occur if the suppressive part of the immune system, i.e. regulatory T cells, is functioning.  

Antibiotics Compromise the Immune System
The major point here is that antibiotics disrupt normal bacterial biofilms that line the intestines and these healthy gut bacteria are required for development of regulatory T cells.  Compromise of Tregs leads to autoimmune diseases, e.g. celiac, Hashimoto’s and baldness, and also allergies.

Antigens/Allergens Have Basic Amino Acid Triplets
The antigens targeted in autoimmune diseases, e.g. tTG, anti-nuclear, TPO, and allergies form an obvious pattern.  All of these antigens and allergens have simple amino acid sequences (rare patches of three basic/positively charged amino acids) that enhance their presentation to the immune system to produce antibodies.  Nuclear proteins, for example, are frequent autoantigens and most of these proteins interact with nucleic acids (negatively charged) and have predictable patches of positively charged amino acids (arginine and lysine).  Other common autoantigens have basic amino acid (arg/lys) patches, because they interact with phospholipids (also negatively charged.)  Proteins with basic patches, e.g. HIV-TAT or heparanase, are also readily transported into cells and nuclei.  Peptides with these sequences are produced by action of stomach enzymes on proteins, e.g. milk lactoferrin, and are antimicrobial.

Allergies / Autoimmune Diseases Are a Predictable Consequence of Antibiotics
Doctors treat with antibiotics, but they fail to repair damage that they cause to gut flora.  The gut flora of most patients treated with antibiotics, especially those who are most fastidiously hygienic, never fully recover.  Constipation is a common symptom of severe dysbiosis and related immunoincompetence.  Probiotics are gut flora bandaids and do not survive as components of gut flora.

Gut bacteria are also needed for development of the aggressive part of the immune system.  Thus, autoimmune diseases can be treated with even more intense use of antibiotics, that will eliminate the rest of the immune system.  Since all vitamins are produced by gut flora as quorum sensing signals, antibiotics can also produce the exotic symptoms of vitamin deficiencies.

Antibiotics are essential to many therapeutic approaches, e.g. surgical procedures or therapy for chronic Lyme disease, but they must be used responsibly and treated patients must be subsequently tested to ensure a repaired gut flora and a functional immune system have been reestablished after antibiotics.  Long term antibiotic use needs special attention, e.g. deliberate Repair of Gut Flora or a fecal transplant.


Thus, I think that it is most likely that ever increasing antibiotic exposure and processed foods, coupled with obsessive hygiene have led to crippled gut flora (as observed in the simplified gut microbiomes of Americans), a net decline in suppressive Tregs and the observed increase of autoimmunity and allergies.  The competence of the immune system may be a major determinant in the course of infection with a pathogen that can produce chronic infections.