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Published in: Reproductive Biology and Endocrinology 1/2016

Open Access 01-12-2016 | Research

Effect of nerve growth factor on sperm quality in asthenozoosprmic men during cryopreservation

Authors: Sara Saeednia, Maryam Shabani Nashtaei, Hossein Bahadoran, Ashraf Aleyasin, Fardin Amidi

Published in: Reproductive Biology and Endocrinology | Issue 1/2016

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Abstract

Background

Although routinely used in assisted reproductive technology, human sperm cryopreservation is not an entirely successful procedure. This study determined the effect of nerve growth factor (NGF) supplementation of cryopreservation medium on post-thaw viability, motility, intracellular nitric oxide (NO) concentration, and DNA fragmentation of human spermatozoa in asthenozoospermic men.

Methods

Semen samples were collected from 25 asthenozoosprmic men and divided into the following groups (n = 5/group): fresh semen (control); frozen-thawed semen without treatment; frozen-thawed semen with NGF treatment (0.5, 1, and 5 ng/ml). Prior to dividing the asthenozoospermic samples, 200 μl of each sample was collected for NGF content assessment by ELISA and then compared with normozoospermic semen samples (25 normozoospermic men). Sperm motility and viability were assessed according to WHO criteria. Furthermore, intracellular nitric oxide and DNA fragmentation were evaluated by Flow Cytometry.

Results

NGF content was significantly higher in normozoospermic compared with asthenozoospermic men. Cryopreservation of asthenozoospermic semen samples significantly decreased sperm viability and motility, and increased intracellular nitric oxide concentration and DNA damage (p < 0.01). In asthenozoospermic frozen–thawed samples treated with 0.5 ng/ml exogenous NGF, we observed a significantly increased viability, motility, and decreased DNA fragmentation (p < 0.05), but intracellular nitric oxide concentration was not reduced. The other high doses (1 and 5 ng/ml) had no significant effect on the variables.

Conclusion

Supplementation with exogenous NGF could have partial and limited protective effect during cryopreservation of human spermatozoa but further research is needed to evaluate the possible clinical applications.
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Metadata
Title
Effect of nerve growth factor on sperm quality in asthenozoosprmic men during cryopreservation
Authors
Sara Saeednia
Maryam Shabani Nashtaei
Hossein Bahadoran
Ashraf Aleyasin
Fardin Amidi
Publication date
01-12-2016
Publisher
BioMed Central
Published in
Reproductive Biology and Endocrinology / Issue 1/2016
Electronic ISSN: 1477-7827
DOI
https://doi.org/10.1186/s12958-016-0163-z

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