Leptin Increases Blood Pressure and Markers of Endothelial Activation during Pregnancy in Rats

Author:

Ibrahim Hisham Saleh1,Omar Effat1ORCID,Froemming Gabrielle Ruth Anisah1,Singh Harbindar Jeet1

Affiliation:

1. Faculty of Medicine, Universiti Teknologi MARA, 47100 Sg Buloh, Selangor, Malaysia

Abstract

Raised leptin levels have been reported in the placentae and serum of women with elevated blood pressure and proteinuria during pregnancy. The role of leptin in this however remains unknown. This study investigates the effect of leptin administration on systolic blood pressure (SBP) and proteinuria and serum markers of endothelial activation during pregnancy inSprague Dawley rats. From day 1 of pregnancy, 24 rats were randomised into those given either saline (group 1) or leptin at 60 or 120 μg/kg/body weight/day (groups 2 and 3 resp.). SBP was measured every 5 days and 24-h urinary protein was measured at days 0 and 20 of pregnancy. Animals were euthanised on day 20 of pregnancy, and serum was collected for estimation of E-selectin and ICAM-1. Compared to group 1, SBP during the latter part of the pregnancy was significantly higher in the leptin-treated group (P<0.01). Urinary protein excretion, serum E-selectin, and ICAM-1 were significantly higher in leptin-treated rats (P<0.05). It seems that leptin administration to normotensiveSprague Dawley ratsduring pregnancy significantly increases SBP, urinary protein excretion, and markers of endothelial activation. However, further studies are required to examine the underlying mechanism responsible for this and its relevance to preeclampsia in humans.

Funder

Research Management Institute

Publisher

Hindawi Limited

Subject

General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine

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