Leptin, the Creation of Obesity Gene and its task in Pregnancy.

Leptin is a protein encoded by the ‘ob’ gene. Leptin is primarily produced by adipocytes and its primary physiologic function is to suppress body fat. Obese individuals have high serum leptin levels and obesity is a leptin resistant state. There are evidences that leptin levels are higher in pregnant women compared to non pregnant women. Leptin levels increase as pregnancy advances and at term, approximate those found in obese adults. There is speculation that leptin is synthesized in placenta in addition to adipose tissue mass. Leptin may have a permissive, indirect role in regulation of fetal growth.

Blood pressure and glycemic status in relation to body mass index in a rural population of Bangladesh.

A cluster sampling of five villages in Dohar thana were selected for screening of hypertension and diabetes in relation to age structure and body habitus. All the subjects over 15 years of age were enlisted for investigation. The response rate was more than 70%. Height, weight, blood pressure (BP) and capillary blood glucose (fasting and 2-hPG) were measured. Diagnostic criteria of international standard were used for hypertension and diabetes. Out of 1005 participants 106 subjects (10.5%) had systolic blood pressure (sBP) more than 140 mmHg and 9% of them had diastolic blood pressure (dBP) more than 90 mmHg. The prevalence of non-insulin-dependent diabetes mellitus (NIDDM) was 2.1% and impaired glucose tolerance (IGT) was 13.3%. The mean body mass index (BMI) of men was 20.39 (SD = 2.91) and that of women was 20.11 (SD = 2.92), having no significant difference between them. Increased age (> or = 50 yr), high BMI (> or = 23.0) and hyperglycemia (2-hPG > 7.8 mmol/L) were the risk factors for both systolic (sBP > 140 mmHg) and diastolic (dBP > 90 mmHg) hypertension. Likewise, increased age, high BMI and hypertension showed significant association with glucose intolerance. Moreover, significant correlations were observed between age and BP (sBP, r = 0.328 p < 0.001; dBP, r = 0.187 p < 0.001) BMI and BP (sBP, r = 0.193 p < 0.001; dBP, r = 0.192 p < 0.001) and 2-hPG and BP (sBP, r = 0.188 p < 0.001; dBP, r = 0.134 p < 0.001).