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Effect of Brain-Derived Neurotrophic Factor (Bdnf) on Sperm Quality of Normozoospermic Men Publisher Pubmed



Safari H1 ; Khanlarkhani N2 ; Sobhani A1 ; Najafi A1 ; Amidi F1
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Authors Affiliations
  1. 1. Department of Anatomical sciences, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. National Institute for Medical Research Development (NIMAD), Tehran, Iran

Source: Human Fertility Published:2018


Abstract

The neurotrophin family of proteins and their receptors act as important proliferative and pro-survival factors in differentiation of nerve cells and are thought to play key roles in the development of reproductive tissues and normal function of spermatozoa. The objective of the present study was to evaluate the effect of Brain-Derived Neurotrophic Factor (BDNF) on the sperm viability and motility, lipid peroxidation (LPO), mitochondrial activity and concentration of leptin, nitric oxide (NO) and insulin in normozoospermic men. Semen samples from 20 normozoospermic men were divided into three groups: (i) control, (ii) BDNF and (iii) BDNF + K252a. BDNF and K252a were added in the dose of 0.133 and 0.1 nM, respectively. Viability was assessed by eosin–nigrosin staining technique, and motility was observed by microscopy. NO concentration and mitochondrial activity were measured with flow cytometry, and LPO was analyzed using enzyme-linked immunosorbent assay (ELISA) kits. Results showed that exogenous BDNF at 0.133 nM could significantly (p < 0.05) influence viability, motility, NO concentration, mitochondrial activity and LPO content. Secretions of insulin and leptin by human sperm were increased in cells exposed to the exogenous BDNF, whereas viability, mitochondrial activity and insulin and leptin secretions were decreased in cells exposed to the K252. © 2017, © 2017 The British Fertility Society.
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