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Updated: Jul 3, 2026

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects

Published on: April 21, 2022

Prenatal testosterone excess reduces sperm count and motility.

Sergio E Recabarren¹, Pedro P Rojas-García, Mónica P Recabarren

¹Laboratory of Animal Physiology and Endocrinology, Faculty of Veterinary Sciences, University of Concepcion, Casilla 537, Chillan, Chile. srecabar@udec.cl

|August 2, 2008

Summary

Prenatal exposure to excess testosterone negatively impacts male reproductive development. This study in sheep revealed reduced sperm count and quality in males exposed to excess testosterone during gestation, highlighting environmental concerns.

Related Experiment Videos

Last Updated: Jul 3, 2026

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects

Published on: April 21, 2022

Area of Science:

Reproductive biology
Developmental endocrinology
Animal models in research

Background:

The developing reproductive system is vulnerable to exogenous steroid exposure.
Excess prenatal testosterone exposure causes deficits in females, similar to polycystic ovary disease.
The impact of prenatal testosterone excess on male reproductive development is not well understood.

Purpose of the Study:

To investigate the effects of prenatal testosterone excess on the male reproductive system in sheep.
To assess reproductive parameters including sperm quality and Leydig cell function in male offspring.

Main Methods:

Sheep were administered testosterone propionate during specific gestational periods.
Male offspring (T-males) were compared to control males.
Evaluated body weight, scrotal circumference, sperm count, sperm motility, and testosterone response to human chorionic gonadotropin.

Main Results:

T-males exhibited significantly reduced body weight, scrotal circumference, and sperm count compared to controls.
Mean sperm straight-line velocity was significantly lower in T-males.
Testosterone levels in response to human chorionic gonadotropin did not differ between groups.

Conclusions:

Prenatal exposure to excess testosterone adversely affects male reproductive health.
Findings suggest potential risks to male fertility from environmental steroidal mimics.
Sheep model provides insights into developmental programming of reproductive deficits.