Association between smoking, pancreatic insulin secretion and insulin resistance in Chinese subjects with or without glucose intolerance / 中华医学杂志(英文版)
Chinese Medical Journal
; (24): 2233-2237, 2007.
Article
em En
| WPRIM
| ID: wpr-255806
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WPRO
ABSTRACT
<p><b>BACKGROUND</b>There are studies suggesting smoking may increase the risk of type 2 diabetes. Effects of smoking on insulin secretion and insulin resistance (IR) are, however, controversial.</p><p><b>METHODS</b>This is a cross-sectional study. Since there were very few smokers among Hong Kong Chinese women, only men (n = 1068) were analyzed in this report. Fasting and 2-hour plasma glucose and insulin were measured. Insulinogenic index as well as beta-cell function and IR based on homeostatic model assessment (HOMA) by computer model (HOMA Calculator v2.2) were calculated.</p><p><b>RESULTS</b>Of the 1068 men, 147 had newly diagnosed diabetes, 131 newly diagnosed impaired glucose tolerance (IGT) and 790 were non-diabetic normal controls. Smokers had similar fasting and 2-hour insulin levels, insulinogenic index and HOMA derived beta-cell function as compared to non-smokers in the groups with diabetes, IGT or normal oral glucose tolerance test (OGTT). IR was also similar between smokers, ex-smokers and non-smokers in those with normal OGTT. In men with IGT or diabetes, after adjustment for age and body mass index, smokers were more insulin resistant as compared to non-smokers (IR, IGT: 1.59 +/- 1.07 vs 1.03 +/- 0.54, P < 0.05; diabetes: 1.96 +/- 1.36 vs 1.06 +/- 0.45, P < 0.01). With Logistic regression analysis, comparing smokers and non-smokers, IR was independently associated with smoking (odds ratio (95% CI), IGT: 2.23 (1.05, 4.71); diabetes: 3.92 (1.22, 12.58)). None of the other insulin parameters enter into the model among those with normal OGTT or comparing ex-smokers and non-smoker or smokers and ex-smokers.</p><p><b>CONCLUSIONS</b>In Chinese men, smoking did not show any direct association with insulin levels and pancreatic insulin secretion. Smoking men with IGT or diabetes appeared more insulin resistant than their non-smoking counterparts.</p>
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Assunto principal:
Resistência à Insulina
/
Fumar
/
Intolerância à Glucose
/
Secreções Corporais
/
Células Secretoras de Insulina
/
Insulina
/
Metabolismo
Tipo de estudo:
Observational_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Chinese Medical Journal
Ano de publicação:
2007
Tipo de documento:
Article