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Updated: Jul 3, 2026
Analysis of Epididymal Protein Synthesis and Secretion
Published on: August 25, 2018
The spatiotemporal expression changes of 16 epididymis-specific genes induced by testosterone, heat, and combination
Xiangqi Li1, Qiang Liu, Shigui Liu
1College of Life Science, Sichuan University, Chengdu 610064, China.
Abstract:
The experimental infertility model of treatments involving testicular warming, testosterone implant, and a combination of the two was developed to confirm a synergistic action induced by the combination treatment on germ cell apoptosis in cynomolgus monkey testis. Using this model, the spatiotemporal expression changes of 16 reported or novel genes in epididymis were investigated to examine the treatment's effect on epididymal genes. It was demonstrated that these region-specific genes, some of which were not regionally fixed, changed greatly with these treatments. The expression levels of these epididymal genes fluctuated, and the expression of most of the genes returned to nearly normal level at the end of treatments. Moreover, the expression changes resulting from the combination treatment were not more significant than those resulting from the single treatment. This suggests that the combination treatment has an antagonistic action on the expression of epididymal genes and that its effect is not as adverse on epididymis as that of the two single treatments.
Insights
This study investigated male infertility treatments in cynomolgus monkeys. Combination therapy did not synergistically affect germ cell apoptosis or epididymal gene expression, suggesting an antagonistic action.
Area of Science:
- Reproductive Biology
- Molecular Endocrinology
- Primate Models
Background:
- Understanding male infertility mechanisms is crucial for reproductive health.
- Investigating the effects of testicular warming and testosterone implants on reproductive function is essential.
- Cynomolgus monkeys serve as a valuable model for human reproductive studies.
Purpose of the Study:
- To develop an experimental infertility model in cynomolgus monkeys.
- To investigate the synergistic action of combined testicular warming and testosterone implant treatments on germ cell apoptosis.
- To examine the spatiotemporal expression changes of epididymal genes in response to these treatments.
Main Methods:
- Development of an experimental infertility model using testicular warming and testosterone implants.
- Analysis of germ cell apoptosis in cynomolgus monkey testes.
- Quantitative analysis of 16 reported or novel epididymal genes' expression levels.
- Assessment of region-specific gene expression changes in the epididymis.
Main Results:
- The combination treatment did not show synergistic effects on germ cell apoptosis.
- Significant alterations in region-specific epididymal gene expression were observed with all treatments.
- Most gene expression levels returned to normal by the end of the treatment period.
- The combination treatment exhibited an antagonistic action on epididymal gene expression, with less adverse effects than single treatments.
Conclusions:
- The combination of testicular warming and testosterone implant does not induce synergistic effects on germ cell apoptosis.
- The combination treatment demonstrates an antagonistic effect on epididymal gene expression, suggesting a protective role against adverse effects compared to single treatments.
- These findings provide insights into the complex regulation of epididymal gene expression during experimental infertility induction.
