Wiley, Diabetic Medicine, 2(24), p. 145-153, 2007
DOI: 10.1111/j.1464-5491.2007.02032.x
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OBJECTIVE: To determine whether pancreatic B-cell function varies in different populations with similar genetic backgrounds but different environments. RESEARCH DESIGN/METHODS: We compared a specific migrant Gujarati community in the UK (n = 205) with people still resident in the same villages of origin in Gujarat, India (n = 246). Pancreatic B-cell function (HOMA-B) was determined and the influence of age, migration and other factors was explored. RESULTS: As anticipated, there was an age-related decline in log(HOMA-B) in both groups. However, the age-related fall in log(HOMA-B) was more pronounced in the UK than in Gujarat (normalized beta-0.29 vs. -0.14, P for difference = 0.03). The decline of HOMA-B with age persisted after adjustment for body mass index (UK beta = -0.31; Gujarat beta = -0.16, P = 0.015, P