Non-celiac gluten sensitivity

Non-celiac gluten sensitivity
Classification and external resources

Non-celiac gluten sensitivity (NCGS) or gluten sensitivity[1] is defined as "a clinical entity induced by the ingestion of gluten leading to intestinal and/or extraintestinal symptoms that improve once the gluten-containing foodstuff is removed from the diet, and celiac disease and wheat allergy have been excluded".[2]

NCGS is included in the spectrum of gluten-related disorders.[3][4] The definition and diagnostic criteria of non-celiac gluten sensitivity were debated and established by three consensus conferences.[1][2][4][5][6]

The pathogenesis of NCGS is not yet well understood. There is evidence that not only gliadin (main cytotoxic antigen of gluten), but also other proteins present in gluten and gluten-containing cereals (wheat, rye, barley, and their derivatives) may have a role in the development of symptoms.[3] FODMAPs are present in gluten-containing grains and have recently been identified as a possible cause of gastrointestinal symptoms in NCGS patients,[3][7][8] but do not justify extra-digestive symptoms.[3]

For these reasons, NCGS is a controversial clinical condition[9] and some authors still question it.[10][11] It has been suggested that "non-celiac wheat sensitivity" is a more appropriate term, without forgetting that other gluten-containing cereals are implicated in the development of symptoms.[10][12]

NCGS is the most common syndrome of gluten-related disorders[4][13] with prevalence rates between 0.5–13% in the general population.[14] As no biomarker for diagnosing this condition is available, its diagnosis is made by exclusion of other gluten-related disorders, namely by excluding celiac disease and wheat allergy.[9] Many people have not been diagnosed following strict criteria and there is a "fad component" to the recent rise in popularity of the gluten-free diet, which leads to debate surrounding the evidence for this condition, its relationship to celiac disease and to irritable bowel syndrome.[3][15]

Signs and symptoms

Reported symptoms of NCGS are similar to those of celiac disease,[16][17] with most patients reporting both gastrointestinal and non-gastrointestinal symptoms.[18][19] In the "classical" presentation of NCGS, gastrointestinal symptoms are similar to those of irritable bowel syndrome, and are also not distinguishable from those of wheat allergy, but there is a different interval between exposure to wheat and onset of symptoms. Wheat allergy has a fast onset (from minutes to hours) after the consumption of food containing wheat and can be anaphylaxic.[19]

Gastrointestinal symptoms

Gastrointestinal symptoms may include any of the following: abdominal pain, bloating, bowel habit abnormalities (either diarrhea or constipation),[4][20] nausea, aerophagia, gastroesophageal reflux disease, and aphthous stomatitis.[3][4]

Other

A range of extra-intestinal symptoms, which can be the only manifestation of NCGS in absence of gastrointestinal symptoms,[3][4][20] have been suggested, but remain controversial.[15][21] These include any of the following: headache, migraine, "foggy mind", fatigue, fibromyalgia,[21][22] joint and muscle pain, leg or arm numbness, tingling of the extremities, dermatitis (eczema or skin rash), atopic disorders such as asthma, rhinitis, other allergies, depression, anxiety, iron-deficiency anemia, folate deficiency, or autoimmune diseases.[3][4][20][21] NCGS has also been controversially implicated in some neuropsychiatric disorders, including schizophrenia, eating disorders, autism, peripheral neuropathy, ataxia, and attention deficit hyperactivity disorder (ADHD).[3][4][15][20][21]

Above 20% of people with NCGS have IgE-mediated allergy to one or more inhalants, foods, or metals, among which most common are mites, graminaceae, parietaria, cat or dog hair, shellfish, and nickel.[20] Approximately 35% of patients suffer other food intolerances, mainly lactose intolerance.[21]

Causes

The pathogenesis of NCGS is not yet well understood. It was hypothesized that gluten, as occurs in celiac disease, is the cause of NCGS. Besides gluten, other components in wheat, rye, barley, and their derivatives, including amylasetrypsin inhibitors (ATIs) and FODMAPs, may cause symptoms.[3]

Other proteins

Some people may have a reaction to other proteins present in gluten-containing cereals that are able to inhibit amylase and trypsin (-α-amylase/trypsin inhibitors [ATIs]).[3][23] ATIs are part of the plant's natural defense against insects and may cause toll-like receptor 4 (TLR4)-mediated intestinal inflammation in humans.[24][25] These TLR4-stimulating activities of ATIs are limited to gluten-containing cereals (wheat, rye, barley, and derivatives) and may induce innate immunity in people with celiac disease or NCGS. ATIs resist proteolytic digestion.[3] ATIs are about 2–4% of the total protein in modern wheat and are present in commercial gluten.[3]

Modern wheat cultivation, by breeding for high ATI content, may play a role in the onset and course of disorders such as celiac disease and gluten sensitivity.[26] However, it has been questioned whether there is sufficient empirical evidence to support this claim, as there are no known studies that directly compare heritage and modern wheat genotypes for ATI activity.[27]

Also, wheat germ agglutinin is considered to be a possible trigger of NCGS-like symptoms.[21]

FODMAPs

FODMAPs (fermentable oligosaccharides, disaccharides, monosaccharides and polyols) that are present in gluten-containing grains have recently been identified as a possible cause of gastrointestinal symptoms in people with NCGS, in place of,[28] or in addition to, gluten.[8] FODMAPs cause mild wheat intolerance mainly limited to gastrointestinal symptoms.[3]

Diagnosis

Absence of reliable biomarkers makes a clear diagnosis of non-celiac gluten sensitivity (NCGS) difficult,[23] and this is generally performed only by exclusion criteria.[9][14] NCGS diagnostic recommendations were established by two consensus conferences (London 2011 and Munich 2012) based on exclusion of celiac disease and wheat allergy[20] because these two conditions also appear in people who experience symptoms similar to those of NCGS, which improve with a gluten withdrawal and worsen after gluten consumption.[12][20][29]

The onset of NCGS symptoms may be delayed hours to a few days after gluten ingestion, but in celiac disease, can take days to weeks.[12] Wheat allergy has a fast onset (from minutes to hours) after the consumption of food containing wheat and could lead to anaphylaxis.[19]

The presence of related extraintestinal manifestations has been suggested to be a feature of NCGS[12] but is a source of controversy. When symptoms are limited to gastrointestinal alterations, there may be an overlap with wheat allergy, irritable bowel syndrome (IBS), and (less likely) intolerance to FODMAPs.[12]

A recently proposed criterion for NCGS diagnosis concludes that an improvement of gastrointestinal symptoms and extra-intestinal manifestations higher than 50% with a gluten-free diet (GFD), assessed through a rating scale, may confirm the clinical diagnosis of NCGS. Nevertheless, this rating scale, is not yet applied worldwide. To exclude a placebo effect, a double-blind placebo-controlled gluten challenge is a useful tool, although it is expensive and complicated in routine clinical ground, and therefore, is only performed in research studies.[9][20]

Differential diagnosis

Examinations evaluating celiac disease and wheat allergy must be performed before patients remove gluten from their diet.[20] It is critical to make a clear distinction between celiac disease and NCGS.[14]

Celiac disease

The main differential diagnosis of NCGS is the exclusion of celiac disease,[21] which can be difficult.[7] NCGS and celiac disease cannot be distinguished clinically because many gastrointestinal and non-gastrointestinal symptoms are similar in both diseases,[7][16][18][19] and there are celiac disease patients with negative serology (absence of specific celiac disease antibodies in serum) and/or without villus atrophy.[14] It has been stated there is no test capable of discarding a celiac disease diagnosis completely[30] but it is highly unlikely in the absence of HLA-DQ2 or DQ8.[19]

The prevalence of undiagnosed celiac disease increased 4-fold during the past half century[3] with most cases remaining unrecognized, undiagnosed and untreated, leaving patients with risk of long-term complications.[23][31] Some NCGS patients may indeed have celiac disease.[14] A 2015 systematic review showed that 20% of NCGS patients who presented with negative serology, HLA-DQ2 and/or HLA-DQ8 haplotypes, and normal histology or duodenal lymphocytosis, could be shown with advanced diagnostic techniques to have celiac disease.[14]

Some authors conclude that the presence of autoimmune conditions in NCGS patients suggests the presence of an unrecognized and undiagnosed celiac disease.[14] Autoimmune diseases typically associated with celiac disease are diabetes mellitus type 1, thyroiditis,[32] gluten ataxia, psoriasis, vitiligo, autoimmune hepatitis, dermatitis herpetiformis, primary sclerosing cholangitis, and others.[32]

To evaluate the possible presence of celiac disease, it is necessary to perform specific serology and duodenal biopsies while the patient is still on a gluten-containing diet.[3][23]

Serological markers

Serological CD markers (IgA tissue transglutaminase [tTGA], IgA endomysial [EmA][20][23] and IgG deamidated gliadin peptide [DGP][14][20] antibodies) are always negative in NCGS people;[7][20][23][29] in addition to specific IgA autoantibody levels, it is necessary to determine total IgA levels.[16][29] IgG tTGA antibodies should be checked in selective IgA deficiency which can be associated with celiac disease and occurs in up to 1 in 40 celiac patients.[29]

Nevertheless, the absence of serological markers do not certainly exclude celiac disease. In celiac people before the diagnosis (on a gluten containing diet), celiac disease serological markers are not always present.[19] As the age of diagnosis increases, these antibody titers decrease, and may be low or even negative in older children and adults. The absence of celiac disease specific antibodies is more common in patients without villous atrophy who only have duodenal lymphocytosis (Marsh 1 lesions) and which responds to a gluten-free diet with histological and symptomatic improvement.[14]

Duodenal biopsies

According to the diagnostic criteria established by the consensus conferences (2011 and 2013), it is necessary to perform duodenal biopsies to exclude celiac disease in symptomatic patients with negative specific celiac disease antibodies.[20] Due to the patchiness of the celiac disease lesions, four or more biopsies should be taken from the second and third parts of the duodenum, and at least one from the duodenal bulb.[7][16] Even in the same biopsy fragments, different degrees of pathology may exist.[16]

Duodenal biopsies in NCGS patients are always almost normal,[7][16][21][29] which is an essential parameter for achieve a diagnosis of NCGS,[16] although is generally accepted that a subgroup of NGCS patients may have an increased number of duodenal intraepithelial lymphocytes (IELs)[14][21][23] ( ≥25/100 enterocytes), which represent Marsh I lesions.[14] Nevertheless, Marsh I is considered compatible with celiac disease[7] and the most frequent cause of these findings, especially in patients positive for HLA DQ2 and/or DQ8 haplotypes, is celiac disease,[14][21] with a documented prevalences ranging from 16% to 43%.[14]

In these patients with duodenal lymphocytosis, and following the consensus guidelines from the European Society of Pediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN), a high count of celiac disease cells (or CD/CD3 ratio) in immunohistochemical assessment of biopsies, or the presence of IgA anti-TG2[14][21] and/or anti-endomysial[21] intestinal deposits, might be specific markers for celiac disease.[14][21] Catassi and Fasano proposed in 2010 that in patients without celiac disease antibodies, either lymphocytic infiltration associated with IgA subepithelial deposits or a histological response to a gluten-free diet, could support a diagnosis of celiac disease.[14]

Wheat allergy

The clinical presentation may be sufficient in most cases to distinguish a wheat allergy from other entities.[16] It is excluded when there are normal levels of serum IgE antibodies to gluten proteins and wheat fractions, and no skin reaction to Prick tests for wheat allergy.[20] Nevertheless, these tests are not always completely reliable.[12]

If an allergic reaction can not be clearly identified, the diagnosis should be confirmed by food provocation tests, ideally performed in a double-blinded and placebo-controlled manner. Delayed allergic reactions may occur with these type of tests, which have to be negative over time, but there are no international consensus statements on diagnosing delayed wheat/food-related symptoms. Usually, reactions that appear between 2 hours and up to five days after the oral challenge, are considered as delayed.[7] Mucosal challenge followed by confocal endomicroscopy is a complementary diagnostic technique, but this technology is not yet generally available and remains as an experimental procedure.[12]

Other tests

Evaluating the presence of antigliadin antibodies (AGA) can be a useful complementary diagnostic test. Up to 50% NCGS patients may have elevated AGA IgG antibodies, but rarely AGA IgA antibodies (only 7% of the cases).[20][21][23] In these patients, unlike in celiac disease people, the IgG AGA became undetectable within 6 months of using a gluten-free diet.[20]

Already on a gluten-free diet

Many people remove gluten from the diet before seeking medical attention.[20][21][23] This fact can diminish the CD serological markers titers and may attenuate the inflammatory changes found in the duodenal biopsies.[21][23] In these cases, patients should be tested for the presence of HLA-DQ2/DQ8 genetic markers because a negative HLA-DQ2 and HLA-DQ8 result has a high negative predictive value for celiac disease.[20][21][23] If these markers are positive, it is advisable to undertake a gluten challenge under medical supervision, followed by serology and duodenal biopsies.[20][21][23] However, gluten challenge protocols have significant limitations, because a symptomatic relapse generally precedes the onset of a serological and histological relapse, and therefore becomes unacceptable for many patients.[7][20][21][23] Gluten challenge is also discouraged before the age of 5 years and during pubertal growth.[7]

It remains unclear what daily intake of gluten is adequate and how long the gluten challenge should last.[23] Some protocols recommend eating a maximum of 10 g of gluten per day for 6 weeks. Nevertheless, recent studies have shown that a 2-week challenge of 3 g of gluten per day may induces histological and serological abnormalities in most adults with proven celiac disease.[21][23] This new proposed protocol has shown higher tolerability and compliance. It has been calculated that its application in secondary-care gastrointestinal practice would identify celiac disease in 7% patients referred for suspected NCGS, while the remaining 93% would be confirmed as NCGS;[23] this is not yet universally adopted.[21]

For people on a gluten-free diet who are unable to perform an oral gluten challenge, an alternative to identify possible celiac disease is an in vitro gliadin challenge of small bowel biopsies; this test is only available at selected specialized tertiary-care centers.[21]

Treatment

Main article: Gluten-free diet

After exclusion of celiac disease and wheat allergy,[18] the subsequent step for diagnosis and treatment of NCGS is to start a strict gluten-free diet (GFD) to assess if symptoms improve or resolve completely. This may occur within days to weeks of starting a GFD, but improvement may also be due to a non-specific, placebo response.[33]

Recommendations may resemble those for celiac disease, for the diet to be strict and maintained, with no transgression.[20] The degree of gluten cross contamination tolerated by people with NCGS is not clear but there is some evidence that they can present with symptoms even after consumption of small amounts.[20]

Whereas celiac disease requires adherence to a strict lifelong gluten-free diet, it is not yet known whether NCGS is a permanent or a transient condition.[9][20] A trial of gluten reintroduction to observe any reaction after 1–2 years of strict gluten-free diet might be performed.[20]

Persistent symptoms

Approximately one third of presumed NGCS patients continue to have symptoms, despite gluten withdrawal. Apart from a possible diagnostic error, there are multiple possible explanations.[20]

One reason is a poor compliance with gluten withdrawal, whether voluntary and/or involuntary.[20] There may be ingestion of gluten, in the form of cross contamination or food containing hidden sources.[8] In some cases, the amelioration of gastrointestinal symptoms with a gluten-free diet is only partial, and these patients could significantly improve with the addition of a low-FODMAPs diet.[8]

A subgroup may not improve when eating commercially available gluten-free products, as these can be rich in preservatives and additives such as sulfites, glutamates, nitrates and benzoates, which can also have a role in triggering functional gastrointestinal symptoms.[8] Furthermore, people with NCGS may often present with IgE-mediated allergies to one or more foods.[20] It has been estimated that around 35% suffer other food intolerances, mainly lactose intolerance.[21]

History

The subject of "food intolerance", including gluten sensitivity and elimination diets, was discussed in 1976.[34]

Patients with symptoms including abdominal pain and diarrhea, which improved on gluten withdrawal, and who did not have celiac disease were initially described in 1976 and 1978 with the first series in 1980.[35][36][37] Debate regarding the existence of a specific condition has continued since then, but the three consensus conferences held since 2010 produced consistent definitions of NCGS and its diagnostic criteria.[1][4][5]

Society and culture

NCGS has been a topic of popular interest.[38][39][40] Gluten has been named "the new diet villain".[41] Gluten-free diets have become the latest diet craze and have been advocated and followed by many celebrities. Estimates suggest that 10%–20% of people in USA and Australia are consuming gluten-free foods. On the other hand, there is another school of thought that suggests that NCGS is largely imaginary and has been overestimated by patients and gluten-free food industry.[11][42][43]

Debate around NCGS as a genuine clinical condition can be heightened because often patients are self diagnosed, or a diagnosis is made by alternative health practitioners.[15] People who avoid gluten rarely have celiac disease excluded before adopting a gluten-free diet, and when fully evaluated, alternative diagnoses may be identified such as fructose intolerance or small intestinal bacterial overgrowth, or a better response to a low FODMAP diet obtained.[44]

Research

There are many open questions on gluten sensitivity,[8] emphasized in one review that "it is still to be clarified whether this disorder is permanent or transient and whether it is linked to autoimmunity".[45] It has not yet been established whether innate or adaptive immune responses are involved in NCGS, nor whether the condition relates specifically to gluten or rather relates to other components of grains.[17][46]

NCGS patients may develop anti-gliadin antibodies and never have anti-tTG antibodies.[47] Studies indicate that AGA IgG is high in slightly more than half of NCGS patients[4] and that, unlike for celiac disease patients, the IgG AGA decreases strongly over 6 months of gluten-free diet; AGA IgA is usually low or absent in NGCS patients.[4][48]

The need for developing biomarkers for NCGS is frequently emphasized;[4][18][49] for example, one review indicated: "There is a desperate need for reliable biomarkers ... that include clinical, biochemical and histopathological findings which support the diagnosis of NCGS."[17]

A 2014 preliminary study found "that short-term exposure to gluten can induce depressive symptoms in people with non-celiac gluten sensitivity".[50]

Research has also attempted to discern, by double-blind placebo-controlled trials, between a "fad component" to the recent popularity of the gluten-free diet and an actual sensitivity to gluten or other components of wheat.[3][4][51]

In a double-blind placebo cross-over trial, small amounts of purified wheat gluten triggered gastrointestinal symptoms (such as abdominal bloating and pain) and extra-intestinal manifestations (such as foggy mind, depression and aphthous stomatitis) in self-reported NCGS. Nevertheless, it remains elusive whether these findings specifically implicate gluten or proteins present in gluten-containing cereals.[21]

See also

References

  1. 1 2 3 Ludvigsson JF, Leffler DA, Bai JC, Biagi F, Fasano A, Green PH, Hadjivassiliou M, Kaukinen K, Kelly CP, Leonard JN, Lundin KE, Murray JA, Sanders DS, Walker MM, Zingone F, Ciacci C (January 2013). "The Oslo definitions for coeliac disease and related terms". Gut (Consensus Development Conference. Research Support, N.I.H., Extramural. Research Support, Non-U.S. Gov't). 62 (1): 43–52. doi:10.1136/gutjnl-2011-301346. PMC 3440559Freely accessible. PMID 22345659.
  2. 1 2 Fasano A, Sapone A, Zevallos V, Schuppan D (May 2015). "Nonceliac gluten sensitivity". Gastroenterology (Review). 148 (6): 1195–204. doi:10.1053/j.gastro.2014.12.049. PMID 25583468. Since 2010, the definition of NCGS has been discussed at 3 consensus conferences, which led to 3 publications . Given the uncertainties about this clinical entity and the lack of diagnostic biomarkers, all 3 reports concluded that NCGS should be defined by the following exclusionary criteria: a clinical entity induced by the ingestion of gluten leading to intestinal and/or extraintestinal symptoms that resolve once the gluten-containing foodstuff is eliminated from the diet, and when celiac disease and wheat allergy have been ruled out.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Fasano A, Sapone A, Zevallos V, Schuppan D (May 2015). "Nonceliac gluten sensitivity". Gastroenterology (Review). 148 (6): 1195–204. doi:10.1053/j.gastro.2014.12.049. PMID 25583468.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 Catassi C, Bai J, Bonaz B, Bouma G, Calabrò A, Carroccio A, Castillejo G, Ciacci C, Cristofori F, Dolinsek J, Francavilla R, Elli L, Green P, Holtmeier W, Koehler P, Koletzko S, Meinhold C, Sanders D, Schumann M, Schuppan D, Ullrich R, Vécsei A, Volta U, Zevallos V, Sapone A, Fasano A (2013). "Non-celiac gluten sensitivity: the new frontier of gluten related disorders". Nutrients (Review). 5 (10): 3839–3853. doi:10.3390/nu5103839. ISSN 2072-6643. PMC 3820047Freely accessible. PMID 24077239. Gluten sensitivity (GS) was originally described in the 1980s [1] and a recently “re-discovered” syndrome entity, characterized by intestinal and extra-intestinal symptoms related to the ingestion of gluten-containing food, in subjects that are not affected with either celiac disease (CD) or wheat allergy (WA).
  5. 1 2 Sapone A, Bai JC, Ciacci C, Dolinsek J, Green PH, Hadjivassiliou M, Kaukinen K, Rostami K, Sanders DS, Schumann M, Ullrich R, Villalta D, Volta U, Catassi C, Fasano A (2012). "Spectrum of gluten-related disorders: consensus on new nomenclature and classification". BMC Medicine (Review). 10: 13. doi:10.1186/1741-7015-10-13. PMC 3292448Freely accessible. PMID 22313950.
  6. ↑ Volta U, Caio G, De Giorgio R, Henriksen C, Skodje G, Lundin KE (Jun 2015). "Non-celiac gluten sensitivity: a work-in-progress entity in the spectrum of wheat-related disorders". Best Pract Res Clin Gastroenterol (Review). 29 (3): 477–91. doi:10.1016/j.bpg.2015.04.006. PMID 26060112. According to the diagnostic criteria established by two Consensus Conferences (London 2011 and Munich 2012), the current view to NCGS diagnosis is based on symptom / manifestation evaluation along with the exclusion of CD and WA [5,7].
  7. 1 2 3 4 5 6 7 8 9 10 Ontiveros N, Hardy MY, Cabrera-Chavez F (2015). "Assessing of Celiac Disease and Nonceliac Gluten Sensitivity". Gastroenterology Research and Practice (Review). 2015: 723954. doi:10.1155/2015/723954. PMC 4429206Freely accessible. PMID 26064097.
  8. 1 2 3 4 5 6 Volta U, Caio G, Tovoli F, De Giorgio R (2013). "Non-celiac gluten sensitivity: questions still to be answered despite increasing awareness". Cellular and Molecular Immunology (Review). 10 (5): 383–392. doi:10.1038/cmi.2013.28. ISSN 1672-7681. PMC 4003198Freely accessible. PMID 23934026.
  9. 1 2 3 4 5 Vriezinga SL, Schweizer JJ, Koning F, Mearin ML (Sep 2015). "Coeliac disease and gluten-related disorders in childhood". Nat Rev Gastroenterol Hepatol (Review). 12 (9): 527–36. doi:10.1038/nrgastro.2015.98. PMID 26100369. NCGS is a clinical condition in which intestinal and extraintestinal symptoms are triggered by gluten ingestion, in the absence of coeliac disease and wheat allergy. The symptoms usually occur soon after gluten ingestion, improve or disappear within hours or a few days after gluten withdrawal, and relapse following its reintroduction. ... Unlike coeliac disease and wheat allergy, NCGS is an unclear and controversial entity.
  10. 1 2 Fasano A, Sapone A, Zevallos V, Schuppan D (May 2015). "Nonceliac gluten sensitivity". Gastroenterology (Review). 148 (6): 1195–204. doi:10.1053/j.gastro.2014.12.049. PMID 25583468. One of the most controversial and highly debated discussions concerns the role of gluten in causing NCGS. Recent reports have indicated that gluten might not be the cause of NCGS, and some investigators still question whether NCGS as a real clinical entity. (...) Cereals such as wheat and rye, when consumed in normal quantities, are only minor sources of FODMAPs in the daily diet (Table 1). Therefore, gluten-containing grains are not likely to induce IBS exclusively via FODMAPs. In contrast, there is growing evidence that other proteins that are unique to gluten-containing cereals can elicit an innate immune response that leads to NCGS, raising a nomenclature issue. For this reason, wheat sensitivity, rather than gluten sensitivity, seems to be a more appropriate term, keeping in mind that other gluten-containing grains such as barley and rye also can trigger the symptoms.
  11. 1 2 Makharia A, Catassi C, Makharia GK (2015). "The Overlap between Irritable Bowel Syndrome and Non-Celiac Gluten Sensitivity: A Clinical Dilemma". Nutrients. 7 (12): 10417–26. doi:10.3390/nu7125541. PMC 4690093Freely accessible. PMID 26690475.
  12. 1 2 3 4 5 6 7 Schuppan D, Pickert G, Ashfaq-Khan M, Zevallos V (Jun 2015). "Non-celiac wheat sensitivity: differential diagnosis, triggers and implications". Best Pract Res Clin Gastroenterol (Review). 29 (3): 469–76. doi:10.1016/j.bpg.2015.04.002. PMID 26060111.
  13. ↑ Czaja-Bulsa G (Apr 2015). "Non coeliac gluten sensitivity – A new disease with gluten intolerance". Clin Nutr (Review). 34 (2): 189–94. doi:10.1016/j.clnu.2014.08.012. PMID 25245857. The new syndrome has been named non-celiac gluten sensitivity (NCGS) or gluten sensitivity (GS).
  14. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Molina-Infante J, Santolaria S, Sanders DS, Fernández-Bañares F (May 2015). "Systematic review: noncoeliac gluten sensitivity". Aliment Pharmacol Ther (Review). 41 (9): 807–20. doi:10.1111/apt.13155. PMID 25753138.
  15. 1 2 3 4 Lebwohl B, Ludvigsson JF, Green PH (Oct 2015). "Celiac disease and non-celiac gluten sensitivity". BMJ (Review). 351: h4347. doi:10.1136/bmj.h4347. PMC 4596973Freely accessible. PMID 26438584.
  16. 1 2 3 4 5 6 7 8 Tonutti E, Bizzaro N (2014). "Diagnosis and classification of celiac disease and gluten sensitivity". Autoimmun Rev (Review). 13 (4–5): 472–6. doi:10.1016/j.autrev.2014.01.043. PMID 24440147.
  17. 1 2 3 Nijeboer P, Bontkes HJ, Mulder CJ, Bouma G (December 2013). "Non-celiac gluten sensitivity. Is it in the gluten or the grain?". Journal of Gastrointestinal and Liver Diseases (Review). 22 (4): 435–40. PMID 24369326.
  18. 1 2 3 4 Mansueto, Pasquale; Seidita, Aurelio; D'Alcamo, Alberto; Carroccio, Antonio (2014). "Non-Celiac Gluten Sensitivity: Literature Review". Journal of the American College of Nutrition (Review). 33 (1): 39–54. doi:10.1080/07315724.2014.869996. ISSN 0731-5724. PMID 24533607.
  19. 1 2 3 4 5 6 Fasano, A; Catassi, C (Dec 20, 2012). "Clinical practice. Celiac disease.". The New England Journal of Medicine (Review). 367 (25): 2419–26. doi:10.1056/NEJMcp1113994. PMID 23252527.
  20. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Volta U, Caio G, De Giorgio R, Henriksen C, Skodje G, Lundin KE (Jun 2015). "Non-celiac gluten sensitivity: a work-in-progress entity in the spectrum of wheat-related disorders". Best Pract Res Clin Gastroenterol (Review). 29 (3): 477–91. doi:10.1016/j.bpg.2015.04.006. PMID 26060112.
  21. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Aziz I, Hadjivassiliou M, Sanders DS (Sep 2015). "The spectrum of noncoeliac gluten sensitivity". Nat Rev Gastroenterol Hepatol (Review). 12 (9): 516–26. doi:10.1038/nrgastro.2015.107. PMID 26122473.
  22. ↑ Rossi A, Di Lollo AC, Guzzo MP, Giacomelli C, Atzeni F, Bazzichi L, Di Franco M (2015). "Fibromyalgia and nutrition: what news?". Clin Exp Rheumatol (Review). 33 (1 Suppl 88): S117–25. PMID 25786053.
  23. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Elli L, Branchi F, Tomba C, Villalta D, Norsa L, Ferretti F, Roncoroni L, Bardella MT (Jun 2015). "Diagnosis of gluten related disorders: Celiac disease, wheat allergy and non-celiac gluten sensitivity". World J Gastroenterol. 21 (23): 7110–9. doi:10.3748/wjg.v21.i23.7110. PMC 4476872Freely accessible. PMID 26109797.
  24. ↑ Barone, Maria; Troncone, Riccardo; Auricchio, Salvatore (2014). "Gliadin Peptides as Triggers of the Proliferative and Stress/Innate Immune Response of the Celiac Small Intestinal Mucosa". International Journal of Molecular Sciences (Review). 15 (11): 20518–20537. doi:10.3390/ijms151120518. ISSN 1422-0067. PMID 25387079.
  25. ↑ Junker, Y.; Zeissig, S.; Kim, S.-J.; Barisani, D.; Wieser, H.; Leffler, D. A.; Zevallos, V.; Libermann, T. A.; Dillon, S.; Freitag, T. L.; Kelly, C. P.; Schuppan, D. (2012). "Wheat amylase trypsin inhibitors drive intestinal inflammation via activation of toll-like receptor 4". Journal of Experimental Medicine. 209 (13): 2395–2408. doi:10.1084/jem.20102660. ISSN 0022-1007. PMID 23209313.
  26. ↑ Junker, Y.; Zeissig, S.; Kim, S.-J.; Barisani, D.; Wieser, H.; Leffler, D. A.; Zevallos, V.; Libermann, T. A.; Dillon, S.; Freitag, T. L.; Kelly, C. P.; Schuppan, D. (2012). "Wheat amylase trypsin inhibitors drive intestinal inflammation via activation of toll-like receptor 4". Journal of Experimental Medicine. 209 (13): 2395–2408. doi:10.1084/jem.20102660. ISSN 0022-1007. PMID 23209313. more recent breeding of high yielding and highly pest-resistant wheat […] has led to a drastic increase of ATI content. […] Our finding of ATI as a potent stimulator of TLR4 in the intestine might not only be relevant to celiac disease, but is likely to have implications for patients with so-called gluten sensitivity and possibly for patients with irritable bowel syndrome, inflammatory bowel disease, and even nonintestinal inflammation.
  27. ↑ Kucek, Lisa Kissing; Veenstra, Lynn D.; Amnuaycheewa, Plaimein; Sorrells, Mark E. (2015). "A Grounded Guide to Gluten: How Modern Genotypes and Processing Impact Wheat Sensitivity". Comprehensive Reviews in Food Science and Food Safety. 14 (3): 285–302. doi:10.1111/1541-4337.12129. ISSN 1541-4337.
  28. ↑ Ontiveros N, Hardy MY, Cabrera-Chavez F (2015). "Assessing of Celiac Disease and Nonceliac Gluten Sensitivity". Gastroenterology Research and Practice (Review). 2015: 723954. doi:10.1155/2015/723954. PMC 4429206Freely accessible. PMID 26064097. The literature suggests that FODMAPs and not gluten per se are the triggers of gastrointestinal symptoms in patients that fit most of the proposed NCGS definitions
  29. 1 2 3 4 5 Green PH, Lebwohl B, Greywoode R (May 2015). "Celiac disease". J Allergy Clin Immunol. 135 (5): 1099–106. doi:10.1016/j.jaci.2015.01.044. PMID 25956012.
  30. ↑ Rodrigo L, Garrote JA, Vivas S (Sep 6, 2008). "[Celiac disease] [Article in Spanish]". Med Clin (Barc). 131 (7): 264–70. doi:10.1016/S0025-7753(08)72247-4. PMID 18775218.
  31. ↑ Fasano A (Apr 2005). "Clinical presentation of celiac disease in the pediatric population". Gastroenterology. 128 (4 Suppl 1): S68–73. doi:10.1053/j.gastro.2005.02.015. PMID 15825129.
  32. 1 2 Lundin KE, Wijmenga C (Sep 2015). "Coeliac disease and autoimmune disease-genetic overlap and screening". Nat Rev Gastroenterol Hepatol. 12 (9): 507–15. doi:10.1038/nrgastro.2015.136. PMID 26303674.
  33. ↑ Genuis SJ, Lobo RA (2014). "Gluten Sensitivity Presenting as a Neuropsychiatric Disorder". Gastroenterology Research and Practice (Review). 2014: 1–6. doi:10.1155/2014/293206. ISSN 1687-6121. PMC 3944951Freely accessible. PMID 24693281.
  34. ↑ Richard Mackarness (January, 1976), Not All in the Mind, Macmillan, ISBN 978-0330245920
  35. ↑ Cooper BT, Holmes GK, Ferguson R, Thompson RA, Cooke WT (1976). "Proceeding: Chronic diarrhoea and gluten sensitivity". Gut. 17 (5): 398. PMID 1278762. On clinical and biopsy evidence, these patients are sensitive to gluten; therefore making a definition of coeliac disease even more difficult
  36. ↑ Ellis A, Linaker BD (1978). "Non-coeliac gluten sensitivity?". Lancet. 1 (8078): 1358–9. doi:10.1016/s0140-6736(78)92427-3. PMID 78118.
  37. ↑ Cooper BT, Holmes GK, Ferguson R, Thompson RA, Allan RN, Cooke WT (1980). "Gluten-sensitive diarrhea without evidence of celiac disease". Gastroenterology. 79 (5 Pt 1): 801–6. PMID 7419003.
  38. ↑ Scott, Cameron. "Is non-celiac gluten sensitivity a real thing?". Healthline. Retrieved 9 April 2016.
  39. ↑ Reinagel, Monica. "Is non-celiac gluten sensitivity for real?". Scientific American. Retrieved 9 April 2016.
  40. ↑ Parry, Lizzie. "You CAN be sensitive to gluten without having coeliac disease, study finds". Mail Online. Retrieved 9 April 2016.
  41. ↑ Springen, Karen. "Are gluten-free diets healthier, or is it hype?". Newsweek. Retrieved 9 April 2016.
  42. ↑ Zaraska, Marta. "For many, gluten isn't the villain it gets cracked up to be". Washington Post. Retrieved 9 April 2016.
  43. ↑ "Fad or fact -- gluten-free?". Core health. Retrieved 9 April 2016.
  44. ↑ Pomeroy, Ross. "Non-celiac gluten sensitivity may not exist". Real Clear Science. Retrieved 9 April 2016.
  45. ↑ Volta U, De Giorgio R (2012). "New understanding of gluten sensitivity". Nature Reviews Gastroenterology & Hepatology (Review). 9 (5): 295–299. doi:10.1038/nrgastro.2012.15. ISSN 1759-5045. PMID 22371218.
  46. ↑ Biesiekierski JR, Muir JG, Gibson PR (2013). "Is gluten a cause of gastrointestinal symptoms in people without celiac disease?". Current Allergy and Asthma Reports (Review). 13 (6): 631–8. doi:10.1007/s11882-013-0386-4. PMID 24026574.
  47. ↑ Sestak K, Fortgang I (October 2013). "Celiac and Non-Celiac Forms of Gluten Sensitivity: Shifting Paradigms of an Old Disease". British Microbiology Research Journal (Review). 3 (4): 585–589. doi:10.9734/BMRJ/2013/6083. PMC 4224078Freely accessible. PMID 25383340.
  48. ↑ Caio G, Volta U, Tovoli F, De Giorgio R (2014). "Effect of gluten free diet on immune response to gliadin in patients with non-celiac gluten sensitivity". BMC Gastroenterology (Research Support, Non-U.S. Gov't). 14 (1): 26. doi:10.1186/1471-230X-14-26. ISSN 1471-230X. PMC 3926852Freely accessible. PMID 24524388.
  49. ↑ Branchi F, Aziz I, Conte D, Sanders DS (2015). "Noncoeliac gluten sensitivity: a diagnostic dilemma". Current Opinion in Clinical Nutrition and Metabolic Care (Review). 18 (5): 508–14. doi:10.1097/MCO.0000000000000207. PMID 26147528.
  50. ↑ Logan AC, Jacka FN (2014). "Nutritional psychiatry research: an emerging discipline and its intersection with global urbanization, environmental challenges and the evolutionary mismatch". Journal of Physiological Anthropology (Review). 33: 22. doi:10.1186/1880-6805-33-22. PMC 4131231Freely accessible. PMID 25060574.. Citing: Peters SL, Biesiekierski JR, Yelland GW, Muir JG, Gibson PR (2014). "Randomised clinical trial: gluten may cause depression in subjects with non-coeliac gluten sensitivity – an exploratory clinical study". Alimentary Pharmacology & Therapeutics (Randomized Controlled Trial). 39 (10): 1104–12. doi:10.1111/apt.12730. PMID 24689456.
  51. ↑ Di Sabatino A, Volta U, Salvatore C, Biancheri P, Caio G, De Giorgio R, Di Stefano M, Corazza GR (2015). "Small Amounts of Gluten in Subjects with Suspected Nonceliac Gluten Sensitivity: A Randomized, Double-Blind, Placebo-Controlled, Cross-Over Trial". Clinical Gastroenterology and Hepatology. 13 (9): 1604–12. doi:10.1016/j.cgh.2015.01.029. PMID 25701700.
This article is issued from Wikipedia - version of the 11/20/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.