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NGF Rescues Spermatogenesis in Azoospermic Mice.
Jiao Luo1,2,3, Yan Yang4, Xunmin Ji5
1Department of Rehabilitation Medicine, Dapeng New District Nan'ao People's Hospital, the First Affiliated Hospital of Shenzhen University, Shenzhen, China.
Reproductive Sciences (Thousand Oaks, Calif.)
|March 16, 2021
Summary
Nasal nerve growth factor (NGF) therapy restored sperm production in azoospermic mice. This non-invasive treatment improved sperm quality and testicular function by activating the hypothalamus-pituitary-gonadal axis.
Area of Science:
- Reproductive Endocrinology
- Neuroscience
- Cell Biology
Background:
- Nerve growth factor (NGF) is crucial for the hypothalamus-pituitary-gonadal (HPG) axis.
- The impact of NGF on spermatogenesis is not fully understood.
- Azoospermia presents a significant challenge in male reproductive health.
Purpose of the Study:
- To investigate the efficacy of intranasal nerve growth factor (NGF) delivery for spermatogenesis in azoospermic mice.
- To assess NGF's potential as a non-invasive therapeutic agent for male infertility.
Main Methods:
- Azoospermia was induced in mice using busulfan injection.
- Liposome-encapsulated NGF (25, 50, 100 μg/kg) was administered intranasally twice weekly for 8 weeks.
- Sperm quality, testicular histopathology, and androgen levels were analyzed.
Main Results:
- Busulfan-induced azoospermia resulted in severe testicular atrophy.
- Intranasal NGF treatment significantly upregulated meiotic markers (Stra8, SYCP3).
- NGF therapy improved sperm quality and restored spermatogenesis by increasing sexual hormone secretion.
Conclusions:
- Nasal NGF delivery is a promising, non-invasive therapeutic strategy for azoospermia.
- NGF enhances spermatogenesis by activating the HPG axis and elevating androgen levels.
- This study highlights a novel application of NGF in reproductive medicine.
