Body mass index is not associated with sperm-zona pellucida binding ability in subfertile males.

Nathalie Sermondade, Sermondade N, Dupont C, Charlotte Dupont, Céline Faure, Faure C, Boubaya M, Marouane Boubaya, Cédrin-Durnerin I, Isabelle Cédrin-Durnerin, Pascale Chavatte-Palmer, Pascale Chavatte‐Palmer, Sifer C, Christophe Sifer, Rachel Lévy, Lévy R
Asian journal of andrology · 2013 · doi:10.1038/aja.2013.10 · PMID:23770940 · PMC3881636
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Abstract

Lifestyle factors, such as weight and nutritional status may affect male fertility, including sperm fertilization ability. The objective of this retrospective study was to evaluate the association between body mass index (BMI) and sperm-zona pellucida binding ability assessed according to the zona binding (ZB) test, which has been described to be a relevant diagnostic tool for the prediction of in vitro fertilization (IVF) ability. Three hundred and six male patients from couples diagnosed with primary idiopathic or mild male factor infertility were included. Correlations between BMI and semen parameters according to ZB test indices were assessed, together with frequencies of positive and negative tests across the BMI categories. In this selected population, BMI was not related to conventional semen parameters or sperm quality assessed according to the ability of spermatozoa to bind to the zona pellucida. The previously described poor outcomes of IVF procedures in cases of male obesity could be due to other sperm defects, such as alterations of sperm capacitation or acrosome reaction. The link between male BMI and biological outcomes during IVF procedures, such as fertilization rates, should be further evaluated.

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