Hip
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Fixing Leaky Gut Helps ME/CFS, and Sometimes Achieves Full Remission
In a ME/CFS patient, Michael Maes found that treatment with anti-inflammatories, antioxidants and a leaky gut diet decreased the the leakage of the LPS endotoxin from Gram negative Enterobacteria in the gut, and this was accompanied by a complete remission of ME/CFS symptoms. See this 2007 study by Maes:
Normalization of the increased translocation of endotoxin from gram negative enterobacteria (leaky gut) is accompanied by a remission of chronic fatigue syndrome.
And in this later 2008 paper, Michael Maes studied 41 ME/CFS patients who he put on "natural anti-inflammatory and anti-oxidative substances, such as glutamine, N-acetyl cysteine and zinc, in conjunction with a leaky gut diet" for a period of 10 to 14 months. Up to 24 patients showed a significant clinical improvement or remission after this protocol, along with attenuation of their IgA and IgM responses to LPS.
Maes also published this 2009 review of the evidence for increased LPS translocation through a leaky gut.
What Is Leaky Gut
Leaky gut involves a dysfunction of the tight junctions that bind together the epithelial cells in the inner lining of the gut. Some researchers suggest leaky gut can lead to LPS endotoxin leaking from the intestine into the liver and general circulation where this LPS may trigger inflammatory changes in the liver and other organs. Ref: 1
Some Factors That Cause Leaky Gut:
Supplements and Drugs That Fix A Leaky Gut:
If you have diarrhea-predominant irritable bowel syndrome (IBS-D), there is a good chance you have leaky gut, as this is common in IBS-D:
This study found that approximately 39% of IBS-D patients had increased intestinal permeability as measured by the lactulose/mannitol test. This study found that colon permeability of IBS-D patients was significantly increased, and interestingly, this degree of colonic permeability correlated with stool frequency (the number of times a day a patient passes stools). This study found that IBS-D patients had increased proximal small intestinal permeability, and this permeability was higher in IBS-D patients with eczema, asthma, or hay-fever.
This study found raised levels of serine protease in the colons of IBS-D patients, and discovered that this serine protease causes epithelial barrier dysfunction and increased intestinal permeability; and this study determined that this serine protease came from pancreatic digestive enzyme secretions.
Note that you can have a leaky small intestine, and/or a leaky colon (large intestine). Glutamine is one of the best supplements to fix a leaky gut, but it is absorbed in the small intestine, so will not reach the colon to fix that.
So if you have a leaky colon, it may be harder to fix that, because many leaky gut supplements will not normally reach the colon.
However, it is possible to place glutamine in colon-targeted capsules which only release their contents when they reach the colon. These colon-targeted capsules can be made at home by applying a shellac coating to ordinary capsules, in a way described here. See also this thread. Shellac is acid resistant, and stops the capsule opening in the stomach (so shellac creates an enteric capsule).
In a ME/CFS patient, Michael Maes found that treatment with anti-inflammatories, antioxidants and a leaky gut diet decreased the the leakage of the LPS endotoxin from Gram negative Enterobacteria in the gut, and this was accompanied by a complete remission of ME/CFS symptoms. See this 2007 study by Maes:
Normalization of the increased translocation of endotoxin from gram negative enterobacteria (leaky gut) is accompanied by a remission of chronic fatigue syndrome.
And in this later 2008 paper, Michael Maes studied 41 ME/CFS patients who he put on "natural anti-inflammatory and anti-oxidative substances, such as glutamine, N-acetyl cysteine and zinc, in conjunction with a leaky gut diet" for a period of 10 to 14 months. Up to 24 patients showed a significant clinical improvement or remission after this protocol, along with attenuation of their IgA and IgM responses to LPS.
Maes also published this 2009 review of the evidence for increased LPS translocation through a leaky gut.
What Is Leaky Gut
Leaky gut involves a dysfunction of the tight junctions that bind together the epithelial cells in the inner lining of the gut. Some researchers suggest leaky gut can lead to LPS endotoxin leaking from the intestine into the liver and general circulation where this LPS may trigger inflammatory changes in the liver and other organs. Ref: 1
Some Factors That Cause Leaky Gut:
- Micro-organisms in the gut increase intestinal permeability. Ref: 1
- Lipopolysaccharide (LPS) endotoxin from Gram-negative bacteria increases intestinal permeability. Ref: 1 2.
- Organophosphate pesticides increase gut leakiness. Ref: 1
- Clostridium perfringens epsilon toxin increases small intestinal permeability in mice and rats. Ref: 1.
- Clostridium difficile toxin A increases intestinal permeability. Ref: 1
- Enteropathogenic Escherichia coli bacteria disrupt the tight junction barrier function and structure. Ref: 1
- Many bacteria "alter tight junction state, presumably to enhance their own growth requirements. Vibrio cholerae secretes a variety of toxins and one of these, zonula occludens toxin, was recognised as increasing paracellular permeability". Ref: 1
- Cytomegalovirus can cause increased intestinal permeability. Ref: 1
- Enterovirus is associated with increased intestinal permeability. Ref: 1
- Mycotoxin ochratoxin A, that can contaminate cereals and animal feed, alters intestinal barrier function, and increases intestinal permeability. Ref: 1 2
- Mycotoxins especially trichothecenes and patulin ingested via food contamination affect the intestinal barrier integrity and can result in an increased translocation intestinal contents into the body. Ref: 1 Note that Dr Joseph Brewer's study found ochratoxin A in 83% of ME/CFS patients, and trichothecenes in 44% of of ME/CFS patients.
- Blastocystis hominis a protozoan parasite can cause increased intestinal permeability. Ref: 1
- TNF-alpha an inflammatory cytokine causes an increase in intestinal permeability, likely by increasing ERK1/2. Ref: 1 Note that Saccharomyces boulardii inhibits ERK1/2, so may help counter the effects of TNF-alpha.
- IL-1beta causes an increase in intestinal epithelial tight junction permeability. Ref: 1
- Nonsteroidal antiinflammatory drug (NSAIDs) increase intestinal permeability. Ref: 1
- NSAIDs compromise intestinal permeability in IBS patients to a greater extent than in healthy subjects. Ref: 1.
- Aspartame and sucralose (artificial sweeteners) increase leaky gut. Ref: 1
- Capsaicin from chili peppers increases leaky gut. Ref: 1
- Solanaceae spices (paprika, cayenne pepper) increase gut permeability. Ref: 1
- Lectins from beans and vegetables can increase leaky gut. The most problematic lectins are found in grains (wheat, rye, barley, oats), legumes (beans, soybeans, peanuts) and nightshades (potatoes, tomatoes, peppers, aubergine). Interestingly, sucrose sugar helps neutralize the toxic effect of legume lectins on gut permeability. Ref: 1 And N-acetyl-glucosamine (NAG) may help neutralize lectins from potatoes, tomatoes, rice, barely and rye, as these foods contain chitin-binding lectins, which bind to glucosamine. Refs: 1 2
- Chloramines (NH2Cl) in tap drinking water compromise tight junctions and so increase gut permeability. Ref: 1. Around 1 in 5 homes have chloramines in their tap water. Details on how to remove chloramines from your drinking water given here (10 mg of vitamin C neutralizes chloramines in 1 liter of water).
- Gliadin (one of the components of gluten) increases gut permeability. Ref: 1 2
- Nonalcoholic fatty liver disease (NAFLD) is associated with increased gut permeability, and this related to the increased prevalence of SIBO in NAFLD patients. Ref: 1
- Traumatic brain injury (TBI) can increase intestinal permeability. Ref: 1
- Low stomach acid (hypochlorhydria) is said to increase leaky gut (though I cannot find any scientific references for this). In this case gastric acid boosting supplements like betaine HCl (or just 1 or 2 tablespoons of vinegar) taken after each meal may help.
- Vitamin C in 500 mg doses surprisingly increases leaky gut. Ref: 1
- Compression of the vagus nerve can cause leaky gut, POTS, MCAS, anxiety, in the opinion of Dr Ross Hauser. See this video at 2:24.
Supplements and Drugs That Fix A Leaky Gut:
- Glutamine "is presently the best known compound for reducing intestinal permeability". Ref: 1 Glutamine preserves gut mucosa integrity in an experimental mouse model. Ref: 1. This article says for repairing leaky gut, glutamine needs to be taken on an empty stomach, and at a dose of 5 to 10 grams of L-glutamine powder daily. This study of glutamine for leaky gut used 24 grams daily.
- Saccharomyces boulardii preserves the barrier function and modulates the signal transduction pathway induced in enteropathogenic Escherichia coli-infected T84 cells. Ref: 1
- Zinc carnosine supplement helps prevent leaky gut occurring. Ref: 1
- Colostrum is a powerful means to repair laky gut. In a study on indomethacin-induced gut hyperpermeability, bovine colostrum was able to counter the leaky gut produced by indomethacin (which is an NSAID drug). Ref: 1
- Triphala herbal formula (especially the Emblica officinalis component, aka "Indian gooseberry") protects against methotrexate-induced intestinal permeability in rat intestine. Ref: 1
- Curcumin may help decrease intestinal permeability, and may work well with glutamine. Ref: 1
- Probiotic bacteria might be beneficial in protecting intestinal epithelial cells from the deleterious effects of pathogenic bacteria. Ref: 1
- Bifidobacterium longum CCM 7952 (but not CCDM 372) improves improved intestinal barrier function and reduces intestinal permeability. Ref: 1
- Lactic acid bacteria probiotics significantly decreased small bowel permeability in IBS-D patients (decreasing the lactulose-mannitol permeability ratio from 0.038 down to 0.023). Ref: 1
- Slippery elm bark (Ulmus fulva) may help reduce intestinal permeability. Ref: 1
- Berberine attenuates disruption of tight junctions in the intestinal epithelium in a mice model of endotoxinemia. This may possibly have been mediated through down-regulation of NF-kB and myosin light chain kinase pathway. Ref: 1
- Low-dose sulfasalazine (500 mg once or twice a day) prevents tight junction disruption induced by TNF-alpha. Ref: 1. Note that the drug sulfasalazine is a potent inhibitor of NF-κB activation, and TNF-alpha-induced increase in intestinal epithelial tight junction permeability requires NF-κB activation, so this explains how sulfasalazine can reduce leaky gut. Ref: 1 However, sulfasalazine may inhibit the antiviral Th1 response, which is undesirable in ME/CFS. Ref: 1
- Chlorogenic acid (found in green coffee bean supplements) decreases intestinal permeability. Ref: 1
- Lubiprostone (Amitiza), an IBS-C drug, improves intestinal permeability (lowering the lactulose-mannitol ratio down to 0.017, compared to 0.028 in controls). Ref: 1
- EGCG, genistein, quercetin and myricetin promote and protect the intestinal tight junction barrier. Ref: 1
- Collagen and gelatin are reputed to help heal leaky gut (found in bone broth). Gelatin can be easily obtained in the supermarket as jelly cubes (jello cubes) for making gelatin desserts.
- Collagen peptides (especially low molecular weight 500–1000 Da) protect against leaky gut. Ref: 1
- Black pepper (piperine) and nutmeg may reduce leaky gut, possibly by causing cell swelling. Ref: 1
- Butyrate may decrease leaky gut, but excessive butyrate may induce severe intestinal epithelial cell apoptosis and disrupt intestinal barrier. Ref: 1
- Grape seed extract improves leaky gut. Ref: 1 2
- Vitamin A may exert a profound role on preventing intestinal inflammation, inhibiting the action of LPS on intestinal epithelial barrier function and tight junction proteins. Ref: 1
- GutGard® (a flavonoid-rich liquorice extract) reduces gut leakiness. Ref: 1
If you have diarrhea-predominant irritable bowel syndrome (IBS-D), there is a good chance you have leaky gut, as this is common in IBS-D:
This study found that approximately 39% of IBS-D patients had increased intestinal permeability as measured by the lactulose/mannitol test. This study found that colon permeability of IBS-D patients was significantly increased, and interestingly, this degree of colonic permeability correlated with stool frequency (the number of times a day a patient passes stools). This study found that IBS-D patients had increased proximal small intestinal permeability, and this permeability was higher in IBS-D patients with eczema, asthma, or hay-fever.
This study found raised levels of serine protease in the colons of IBS-D patients, and discovered that this serine protease causes epithelial barrier dysfunction and increased intestinal permeability; and this study determined that this serine protease came from pancreatic digestive enzyme secretions.
Note that you can have a leaky small intestine, and/or a leaky colon (large intestine). Glutamine is one of the best supplements to fix a leaky gut, but it is absorbed in the small intestine, so will not reach the colon to fix that.
So if you have a leaky colon, it may be harder to fix that, because many leaky gut supplements will not normally reach the colon.
However, it is possible to place glutamine in colon-targeted capsules which only release their contents when they reach the colon. These colon-targeted capsules can be made at home by applying a shellac coating to ordinary capsules, in a way described here. See also this thread. Shellac is acid resistant, and stops the capsule opening in the stomach (so shellac creates an enteric capsule).
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