Glutamic acid decarboxylase and islet antigen 2 antibody profiles in people with adult‐onset diabetes mellitus: a comparison between mixed ethnic populations in Singapore and Germany

AIM: To gain insight into the presence of islet cell autoimmunity in an ethnic Asian compared with a white European population. METHODS: For this cross‐sectional study we recruited people with adult‐onset diabetes (age of diagnosis 20–60 years), at tertiary referral centres in Germany (n=1020) and S...

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Detalles Bibliográficos
Autores principales: Ong, Y. H., Koh, W. C. A., Ng, M. L., Tam, Z. Y., Lim, S. C., Boehm, B. O., Blagieva, R., Boehm, J., Brückel, J., Claudi‐Boehm, S., Haak, T., Haenle, M., Höpfer, S., Jütting, G., Kleger, A., Kratzer, W., Kurkhaus, A., Lippmann‐Grob, B., Manfras, B., Merger, S., Rosinger, S., Schilling, S., Seufferlein, T., Sing, R., Trischler, G., Ali, Y., Bee, Y. M., Chew, D. E. K., Chia, K. S., Dalan, R., Khoo, C.M., Lee, E. S., Leow, M. K., Lim, S.C., Ng, S. P., Sim, X., Srinivasan, D. K., Sum, C. F., Tai, E.S., Tan, W. E., Tavintharan, S., Toh, M. P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2017
Materias:
Research Articles
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5575487/
https://www.ncbi.nlm.nih.gov/pubmed/28370329
http://dx.doi.org/10.1111/dme.13358
Descripción
Sumario:AIM: To gain insight into the presence of islet cell autoimmunity in an ethnic Asian compared with a white European population. METHODS: For this cross‐sectional study we recruited people with adult‐onset diabetes (age of diagnosis 20–60 years), at tertiary referral centres in Germany (n=1020) and Singapore (n=1088). Glutamic acid decarboxylase and islet antigen 2 antibodies were measured according to Islet Autoantibody Standardization Program protocols. RESULTS: The prevalence of glutamic acid decarboxylase antibody positivity was 13.9% (95% CI 12.1–16.0; P<0.001) in the white European cohort compared with 6.8% (95% CI 5.5–8.4; P<0.001) in the Asian cohort. Glutamic acid decarboxylase antibody positivity was 11.4% (95% CI 7.7–16.6) in Indian, 6.0% (95% CI 3.6–9.9) in Malay and 5.8% (95% CI 4.3–7.7; P<0.001) in Chinese participants. In the white European participants, the prevalence of islet antigen 2 antibody positivity was 7.8% (95% CI 6.4–9.4) compared with 14.8% (95% CI 12.8–17.0; P<0.001) in the Asian cohort as a whole, and among the three ethnicities in the Asian cohort it was 12.4% (95% CI 8.6–17.7) in Indian, 16.8% (95% CI 12.6–22.2) in Malay and 15.7% (95% CI 13.2–18.6) in Chinese participants. Double antibody positivity was seen in 5.7% (95% CI 4.5–7.1) of white European participants compared with 1.6% (95% CI 1.0–2.5; P<0.01) of Asian participants. In the white European cohort, those who were glutamic acid decarboxylase autoantibody‐positive had a lower BMI than those who were autoantibody‐negative, but this trend was absent in the Asian cohort. CONCLUSIONS: A marked prevalence of islet cell autoimmunity was observed in people with adult‐onset diabetes. While glutamic acid decarboxylase antibodies were more frequent in the European cohort, islet antigen 2 antibody positivity was highest in the three ethnic groups in Singapore, suggesting ethnic‐specific differences in antibody profiles.

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