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Diabet Med. 2015 Jun;32(6):810-3. doi: 10.1111/dme.12644. Epub 2014 Dec 12.

Low prevalence of latent autoimmune diabetes in adults in northern India.

Author information

1
Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.
2
Medical Genetics, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.
3
Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Victoria, Australia.

Abstract

AIM:

To study the frequency of islet antibodies in a large cohort of clinic- and community-based patients with Type 2 diabetes in northern India.

METHODS:

We measured glutamic acid decarboxylase (GAD) antibodies in 618 adults with Type 2 diabetes (378 patients with diabetes attending a hospital clinic, 240 patients diagnosed in a community survey) and in 192 healthy subjects residing in north India. Islet antigen 2 (IA2) antibodies were also studied in a proportion of the patients with diabetes (n = 492) and in a control population (n = 191). GAD and IA2 antibodies were measured by immunoprecipitation of the respective (35) S-labelled recombinant antigen.

RESULTS:

We found that GAD antibodies were present in nine (1.5%) patients with diabetes (clinic population: 0.8%, community study: 2.5%), a prevalence similar to that among the subjects without diabetes (n = 2; 1%). IA2 antibodies were detected in seven patients with Type 2 diabetes (1.4%) and in two healthy control subjects (1.0%). The frequency of either GAD or IA2 antibodies was similar in people with and without diabetes (3.2 vs 2.1%). No subject was found to have both antibodies. Insulin requirement was higher among antibody-positive than among antibody-negative patients (GAD antibody: 33 vs 6.3%; P = 0.001; GAD or IA2 antibody: 23.1 vs 6.4%; P = 0.02); however, other clinical features were similar in the two groups.

CONCLUSIONS:

In the present north-Indian population with Type 2 diabetes, the overall prevalence of GAD antibodies and the prevalence of either GAD or IA2 antibodies were considerably lower than those reported in white European populations.

PMID:
25444459
DOI:
10.1111/dme.12644
[Indexed for MEDLINE]

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