The Spectrum Of Gluten Related Disorders Alessio Fasano, M.D. W. - - PowerPoint PPT Presentation

the spectrum of gluten related disorders
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The Spectrum Of Gluten Related Disorders Alessio Fasano, M.D. W. - - PowerPoint PPT Presentation

The Spectrum Of Gluten Related Disorders Alessio Fasano, M.D. W. Allan Walker Chair in Pediatric Gastroenterology and Nutrition Professor of Pediatrics Harvard Medical School Mucosal Biology and Immunology Research Center And Center for Celiac


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Alessio Fasano, M.D.

  • W. Allan Walker Chair in Pediatric Gastroenterology and Nutrition

Professor of Pediatrics Harvard Medical School Mucosal Biology and Immunology Research Center And Center for Celiac Research And Treatment Massachusetts General Hospital for Children

The Spectrum Of Gluten Related Disorders

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The Controversy On Who Should Be On A GFD

Only People With Celiac Disease Everybody

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The Source Supporting GFD For Everybody

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The Epidemics Of Gluten Related Disorders

  • Quality of gluten: GE grains
  • Quantity of gluten
  • Gluten cannot be digested
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The Epidemics Of Gluten Related Disorders

  • Quality of gluten: GE grains
  • Quantity of gluten
  • Gluten cannot be digested
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Kasarda D. J Agric Food Chem. 2013;61: 1155–1159.

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Kasarda D. J Agric Food Chem. 2013;61: 1155–1159.

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+

GMO Grains

Aegilops tauschii DD 14 chromosomes 50,000 genes

  • T. aestivum AABBDD

42 chromosomes 150,000 genes

  • T. turgidum AABB

28 chromosomes 100,000 genes

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The Epidemics Of Gluten Related Disorders

  • Quality of gluten: GE grains
  • Quantity of gluten
  • Gluten cannot be digested
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Kasarda D. J Agric Food Chem. 2013;61: 1155–1159.

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The Epidemics Of Gluten Related Disorders

  • Quality of gluten: GE grains
  • Quantity of gluten
  • Gluten cannot be digested
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What is so Special About Gluten?

Gliadin Glutenin Gluten (gliadin+glutenin)

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Maiuri et al. Scand J

  • Gastroenterol. 1996; 31:247-53.

Shan L et al, Science. 2002; 297:2275-9. Lammer K et al, Gastroenterology 2008;135:194-204. Lammer K et al, Immunology. 2011;132:432-40

Structural Characteristics of Alpha-Gliadin

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Celiac Disease

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The Banana Babies

WK Dicke, 1905 - 1962 1st case of CD at UMB: 1938

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Celiac Disease as a Unique Model of Autoimmunity

  • The only autoimmune disease in which specific

MHC class II HLA (DQ2 and/or DQ8) are present in >95% of patients;

  • The auto-antigen (tissue Transglutaminase) is

known;

  • The environmental trigger (gluten) is known;
  • Elimination of the environmental trigger leads to

a complete resolution of the autoimmune process that can be re-ignited following re-exposure to gluten

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Gastrointestinal Manifestations (“Classic”)

Most common age of presentation: 6-24 months

  • Chronic or recurrent diarrhea
  • Abdominal distension
  • Anorexia
  • Failure to thrive or weight loss
  • Abdominal pain
  • Vomiting
  • Constipation
  • Irritability

Rarely: Celiac crisis

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Non Gastrointestinal Manifestations

  • Dermatitis Herpetiformis
  • Dental enamel hypoplasia
  • f permanent teeth
  • Osteopenia/Osteoporosis
  • Short Stature
  • Delayed Puberty
  • Iron-deficient anemia

resistant to oral Fe

  • Hepatitis
  • Arthritis
  • Epilepsy with occipital

calcifications

Most common age of presentation: older child to adult

Listed in descending order of strength of evidence

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The Clinical Manifestations of Celiac Disease are More Heterogeneous Than Previously Appreciated

  • A. Fasano, N Engl J Med 2003;348:2568-70.
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1960 1970 1980 1990 2000 2010 0.0 0.5 1.0 1.5

year CD prevalence (%)

0.21% 0.45% 0.93%

The Epidemics of Celiac Disease

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Not Only Celiac Disease

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Gluten Free Market

For the American general population adopting a gluten-free diet is becoming an increasingly popular solution. The market for gluten-free food and beverage products grew at a compound annual growth rate of 28 percent from 2004 to 2011, to finish with almost $6.7 billion in retail sales last year. By the end of 2016 the market is expected to reach about $14.6 billion in sales.

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How Many People in the US Are Embracing a GFD?:

Percentage of U.S. Adults Trying to Cut Down or Avoid Gluten in Their Diets Reaches New High in 2016, Reports NPD

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The Fad Factor of the GFD

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Based on internet interview users age 18y+ who eats GF food Approx 50M Approx 24M Approx 7M Approx 9M

Why People in the US Embrace a GFD?:

Approx 400,000

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The Gluten Free Diet: Not Only Celiac Disease

GLUTEN FREE DIET CONSUMERS MEDICAL NECESSITY WHEAT ALLERGY (IGE-MEDIATED) (~0.1%) CELIAC DISEASE (AUTOIMMUNE- BASED) (~1%) GLUTEN SENSITIVITY (INNATE IMMUNITY?) (??) NO MEDICAL NECESSITY

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Key Questions About Non-Celiac Gluten Sensitivity:

  • Does it exist?
  • How NCGS is diagnosed?
  • Are NCGS and IBS synonimous?
  • Are FODMAPs the only trigger of

NCGS?

  • Is gluten the only trigger of

NCGS?

  • Is gluten involved in triggering

the symptoms of NCGS

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Cases of reaction to ingestion of gluten-containing grains in which both allergic and autoimmune mechanisms have been ruled out (diagnosis by exclusion criteria)

  • Triggered by the ingestion of gluten-containing grains;
  • Negative immuno-allergy tests to wheat;
  • Negative CD serology (EMA and/or tTG) and in which IgA deficiency

has been ruled out;

  • Negative duodenal histopathology;
  • Possible presence of biomarkers of gluten immune-reaction (AGA+);
  • Presence of clinical symptoms that can overlap with CD or wheat

allergy symptomatology;

  • Resolution of the symptoms following implementation of a GFD and

relapse after re-exposure to gluten-containing grains (double blind)

Sapone A. et al BMC Med 2012, Ludvigsson JF et al Gut 2013, Catassi C. Et al, Nutrients 2013

Gluten Sensitivity (NCGS): Facts

Definition

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Gluten Sensitivity (NCGS):

Consensus Conferences to Define NCGS

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. Spectrum of gluten-related disorders: consensus on new nomenclature and classification. BMC

  • Med. 2012 Feb 7;10:13

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. The Oslo definitions for coeliac disease and related terms. Gut. 2013 Jan;62(1):43-52 Catassi C, Bai JC, 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. Non-Celiac Gluten sensitivity: the new frontier of gluten related disorders. Nutrients. 2013 Sep 26;5(10):3839-53. Catassi C, Elli L, Bonaz B, Bouma G, Carroccio A, Castillejo G, Cellier C, Cristofori F, de Magistris L, Dolinsek J, Dieterich W, Francavilla R, Hadjivassiliou M, Holtmeier W, Körner U, Leffler DA, Lundin KE, Mazzarella G, Mulder CJ, Pellegrini N, Rostami K, Sanders D, Skodje GI, Schuppan D, Ullrich R, Volta U, Williams M, Zevallos VF, Zopf Y, Fasano A. Diagnosis of Non-Celiac Gluten Sensitivity (NCGS): The Salerno Experts' Criteria. Nutrients. 2015 Jun 18;7(6):4966-77. doi: 10.3390/nu7064966.

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Clinical manifesta-ons of NCGS

Frequency Intes'nal Extra-intes'nal

Very Common Bloa-ng Lack of wellbeing Abdominal pain Tiredness Common Diarrhea Headache Epigastric pain Anxiety Nausea Foggy mind Aerophagia Numbness GER Joint/muscle pain Aphtous stoma--s Skin rash/derma--s Alterna-ng bowel habits Cons-pa-on Undetermined Hematochezia Weight loss Anal fissures Anemia Loss of balance Depression Rhini-s/asthma Weight increase Inters--al cys--s Ingrown hairs Oligo or polimenorrhea Sensory symptoms Disturbed sleep paMern Hallucina-ons Mood swings Au-sm Schizophrenia

The Salerno NCGS diagnostic criteria (Nutrients, 2015)

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Glut Gluten en and and The he Brain ain

Chr hronic

  • nic Headac

Headache he Shor hort Memor emory Los Loss Anxiet nxiety Depr epres ession ion ADHD HD? Aut utis ism? m? Ataxia axia Seiz eizur ures es Schiz hizophr

  • phrenia?

enia? Irrit itabilit bility

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The Controversial Questions About Gluten Sensitivity

Are The Epidemics Of Autism, ADHD and Schizophrenia Also Related to The Rise of Non-Celiac Gluten Sensitivity?

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Biomarkers

YES YES NO

Gluten Related Disorders Pathogenesis Autoimmune Allergic Not Autoimmune Not allergic (Innate immunity?) Celiac Disease Gluten Ataxia Dermatitis herpetiformis Wheat allergy Gluten sensitivity Respiratory Allergy Food Allegy WDEIA Contact Urticaria Symptomitic Silent Potential

Proposed New Classification of Gluten Related Disorders

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Differential Diagnosis Between CD, GS, and WA

Celiac Disease Gluten Sensitivity Wheat Allergy

Time interval between gluten exposure and

  • nset of symptoms

Weeks-Years Hours-Days Minutes-Hours Pathogenesis Autoimmunity (Innate+ Adaptive Immunity) Immunity? (Iinnate Immunity?) Allergic Immune Response HLA HLA DQ2/8 restricted (~97% positive cases) Not-HLA DQ2/8 restricted (50% DQ2/8 positive cases) Not-HLA DQ2/8 restricted (35-40% positive cases as in the general population) Auto-antibodies Almost always present Always absent Always absent Enteropathy Almost always present Always absent (slight increase in IEL) Always absent (eosinophils in the lamina propria) Symptoms Both intestinal and extra-intestinal (not distinguishable from GS and WA with GI symptoms) Both intestinal and extra- intestinal (not distinguishable from CD and WA with GI symptoms) Both intestinal and extra- intestinal (not distinguishable from CD and GS when presenting with GI symptoms) Complications Co-morbidities Long term complications Absence of co-morbidities and long term complications (long follow up studies needed to confirm it) Absence of co-morbidities. Short-term complications (incliuding anaphylaxis)