Majority of Children With Type 1 Diabetes Produce and Deposit Anti-Tissue Transglutaminase Antibodies in the Small Intestine

نویسندگان

  • Mariantonia Maglio
  • Fiorella Florian
  • Monica Vecchiet
  • Renata Auricchio
  • Francesco Paparo
  • Raffaella Spadaro
  • Delia Zanzi
  • Luciano Rapacciuolo
  • Adriana Franzese
  • Daniele Sblattero
  • Roberto Marzari
  • Riccardo Troncone
چکیده

OBJECTIVE Anti-tissue transglutaminase (TG2) antibodies are the serological marker of celiac disease. Given the close association between celiac disease and type 1 diabetes, we investigated the production and deposition of anti-TG2 antibodies in the jejunal mucosa of type 1 diabetic children. RESEARCH DESIGN AND METHODS Intestinal biopsies were performed in 33 type 1 diabetic patients with a normal mucosal architecture: 14 had high levels (potential celiac disease patients) and 19 had normal levels of serum anti-TG2 antibodies. All biopsy specimens were investigated for intestinal deposits of IgA anti-TG2 antibodies by double immunofluorescence. In addition, an antibody analysis using the phage display technique was performed on the intestinal biopsy specimens from seven type 1 diabetic patients, of whom four had elevated and three had normal levels of serum anti-TG2 antibodies. RESULTS Immunofluorescence studies showed that 11 of 14 type 1 diabetic children with elevated levels and 11 of 19 with normal serum levels of anti-TG2 antibodies presented with mucosal deposits of such autoantibodies. The phage display analysis technique confirmed the intestinal production of the anti-TG2 antibodies; however, whereas the serum-positive type 1 diabetic patients showed a preferential use of the VH5 antibody gene family, in the serum-negative patients the anti-TG2 antibodies belonged to the VH1 and VH3 families, with a preferential use of the latter. CONCLUSIONS Our findings demonstrate that there is intestinal production and deposition of anti-TG2 antibodies in the jejunal mucosa of the majority of type 1 diabetic patients. However, only those with elevated serum levels of anti-TG2 antibodies showed the VH usage that is typical of the anti-TG2 antibodies that are produced in patients with celiac disease.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Diagnostic Value of Serum IgG-Antigliadin, IgA Anti-endomysial and IgA Anti-tissue Transglutaminase Antibodies for Pediatric Celiac Disease

  Background and Objective: Celiac disease is an autoimmune disorder, characterized by inflammation, villous atrophy, and crypt hyperplasia of the small bowel mucosa. In this study we considered and compared sensitivity and specificity of serological tests in patients with celiac disease. Materials and Methods: In this cross-sectional study we prospectively recruited children with suspected c...

متن کامل

Anti-Endomysial and Anti-Tissue Transglutaminase Serological Test Compared with Small Bowel Biopsy in the Diagnosis of Celiac Disease

Abstract Background and Objective: Celiac is an autoimmune disease that is characterized by an immune-system-related damage in the intestinal tissue after consumption of gluten. There is not any general agreement for gold standard. The Purpose of this study was the evaluation of specificity and sensitivity of anti-endomysial (EMA) and anti-tissue transglutaminase (TTG) serological test compa...

متن کامل

Determination of celiac disease frequency in type 1 diabetes mellitus children in the Pediatric Endocrinology Clinic of Sari, Mazandaran

Background: Diabetes mellitus, type 1 (T1DM) and celiac disease (CD) are both immune-mediated. The mean rate of clinical overlap is 8%. The aim of this study was to discover the frequency of CD in children with type 1 diabetes in Mazandaran province. Methods: This retrospective descriptive study was performed in the pediatric endocrinology referral center, in Sari from 2012 to 2014. We screene...

متن کامل

Prevalence of celiac disease in children under-18 years old with diabetes mellitus type I

Background: Celiac disease is a chronic inflammation of small intestine which is caused by an increased permanent sensitivity to a protein named gluten. This protein is present in some cereals such as wheat, barley, and rye. The immunologic response to this protein can cause clinical symptoms in people with specific human leukocyte antigens (HLAs) (including HLADQ2 or HLADQ8). Most studies have...

متن کامل

Autoimmune thyroid disease in northern Iranian children with type 1 diabetes mellitus in Amirkola Endocrine Clinic

Background: Type 1 diabetes mellitus (T1DM) as an autoimmune disorder is associated with other autoimmune diseases such as autoimmune thyroid (AIT) disease. The aim of this study was to determine the prevalence of AIT in children who were referred to Amirkola Endocrine Clinic (north of Iran). Methods: This cross-sectional study was carried out on 100 diabetic children aged 1-15 years during ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 58  شماره 

صفحات  -

تاریخ انتشار 2009