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Diabetologia. 1995 Jun;38(6):693-8.

Prevalence of diabetes mellitus and impaired glucose tolerance in parents of women with gestational diabetes.

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Diabetes Research Laboratories, Radcliffe Infirmary, Oxford, UK.


Nuclear families of non-insulin-dependent diabetic (NIDDM) patients are uncommon, as usually one or both parents have died. In order to aid identification of complete nuclear families, we have ascertained the disease process at a younger age by studying subjects with previous gestational diabetes. One hundred women who had had gestational diabetes, age (+/- SD) 38 (6) years, were screened by fasting plasma glucose (fpg). Sixty-one were found to have either fasting hyperglycaemia (5.5 < or = fpg < 7.8 mmol/l) or diabetes. Of these women 35 had both parents alive and the parents of 14 of these women agreed to the assessment of their metabolism by a continuous infusion of glucose with model assessment (CIGMA). Seven probands had impaired glucose tolerance (IGT) and seven were diabetic. They were age 35 (4) years and had body mass index (BMI) 26 (5) kg/m2. The parents were aged 62 (6) years and had BMI 29 (6) kg/m2 and their affection status was defined as presence of glucose intolerance (fpg or post-infusion achieved plasma glucose level > 2 SD of an age and obesity matched population). In the 14 families, five probands (36%) had neither parent affected, six (43%) had one parent affected and three (21%) had both parents affected. Only three probands had a parent with diabetes as defined by World Health Organisation criteria. We conclude that the study of women who have had gestational diabetes allows detection of probands with diabetes or impared glucose tolerance, who have both parents available for study.(ABSTRACT TRUNCATED AT 250 WORDS).

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