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Year : 2015  |  Volume : 4  |  Issue : 4  |  Page : 256-259

Influences of birth weight, gender, and pregnancy induced hypertension on cord blood leptin in growth restricted and normal neonates

1 Department of Pediatrics, K. S. Hegde Medical Academy, NITTE University, Mangalore, Karnataka, India
2 Department of Biochemistry, K. S. Hegde Medical Academy, NITTE University, Mangalore, Karnataka, India

Correspondence Address:
Rathika Damodar Shenoy
Department of Pediatrics, K. S. Hegde Medical Academy, NITTE University, Derlakatte, Mangalore - 575 018, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2249-4847.165690

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Leptin synthesized by adipose tissue has significant association with birth weight, body mass index and insulin-glucose ratio. Fetuses with growth restriction (FGR) have substantial reduction in adipose tissue; hence lower levels of leptin in cord blood. Hyperleptinemia has been observed in pregnancy induced hypertension (PIH). Objectives: To estimate leptin levels in cord blood of growth restricted and normal neonates and study the factors influencing the same. Methods: In this prospective study, a sample size of 40 each of growth restricted and appropriate for gestational age neonates were included. Data included maternal illnesses, anthropometry, maturity and ponderal index (PI). Cord leptin assay was done using commercial solid phase competitive ELISA and was expressed in ng/ml. Statistical analysis was done using t test and Pearson correlation co-efficient using recommended software. Results: Maternal PIH was the major etiological factor contributing to FGR (12, 30%, P =0.000). Mean cord leptin in ng/ml was 2.80±0.4 in growth restricted group and 3.53±0.5 in normal neonates with P value of 0.074. There was no correlation between cord leptin and birth weight (r=0.08; p=0.61) and PI (r=0.03; p=0.89). In female neonates and those born to mothers with PIH, mean leptin levels were 3.16±0.6 and 3.13±0.7 ng/ml respectively, higher in comparison with males and those born to mothers without hypertension. Conclusion: Mean cord leptin levels were lower in the growth restricted and higher in female gender and those born to maternal PIH. Cord leptin may be influenced by various maternal and fetal factors.

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