Insulin action and secretion in healthy Hispanic-Mexican first-degree relatives of subjects with type 2 diabetes.

Abstract	The aim of this study was to assess the early insulin secretion and insulin action of healthy non-diabetic Hispanic-Mexican subjects with and without family history of Type 2 diabetes (FHD). One hundred and twenty non-relative subjects were compared against 115 first-degree relatives of individuals with Type 2 diabetes. To assign the subjects to the correspondent group, the FHD was carefully ascertained by clinical examination of the participants' parents. Age and gender were matched criteria. Incomplete or unclear data about FHD, previous diagnosis of diabetes or chronic diseases were exclusion criteria. Subjects in both groups were required to have fasting glucose <6.1 mmol/l, and 2-h PG<7.7 mmol/l. Insulin action and secretion were estimated by HOMA (homeostasis model insulin analysis resistance index) and insulinogenic index, respectively. Logistic regression analysis showed an independent relationship between BMI and insulin resistance (HOMA score >5.0) (odds ratio, OR, 1.42, p=0.03), and between FHD and insulin resistance (OR 1.27, p=0.04). On the other hand, there was a strong and independent relationship between FHD and high early insulin secretion (insulinogenic index >0.72) (OR 1.64, p=0.01) but not between BMI and high early insulin secretion (OR 0.93, p=0.3). Healthy Mexican first-degree relatives of subjects with Type 2 diabetes show an independent relationship between FHD and both high early insulin response and decreased insulin action, whereas BMI was only related to insulin resistance.
Authors	F Guerrer-Romer, M Rodríguez-Morán, M González-Ortiz, E Martínez-Abundis
Journal	Journal of endocrinological investigation (J Endocrinol Invest) Vol. 24 Issue 8 Pg. 580-6 (Sep 2001) ISSN: 0391-4097 [Print] Italy
PMID	11686540 (Publication Type: Journal Article)
Chemical References	Insulin
Topics	Adult Body Mass Index Diabetes Mellitus, Type 2 (genetics) Female Hispanic or Latino Humans Insulin (metabolism, physiology) Insulin Resistance (physiology) Insulin Secretion Male Mexico Middle Aged Reference Values Regression Analysis

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