[Changes in morphology and steroidogenic function of aged human Leydig cells]
Wei-ren Li1, Bo-xuan Han, Tao Liu
1Andrology Center,Peking University First Hospital, Beijing 100034, China.
Summary
Aging male Leydig cells show mitochondrial swelling and reduced StAR and P450scc protein expression, leading to decreased testosterone synthesis and late onset hypogonadism (LOH). Further research is needed to fully understand the mechanism.
Area of Science:
- Reproductive biology
- Endocrinology
- Cellular biology
Context:
- Aging male reproductive health is a growing concern.
- Late onset hypogonadism (LOH) affects a significant portion of the aging male population.
- Understanding Leydig cell function is crucial for addressing LOH.
Purpose:
- To investigate morphological and functional changes in aged human Leydig cells.
- To elucidate the underlying mechanisms of late onset hypogonadism (LOH).
Summary:
- Aged males exhibit higher Aging Male's Symptoms (AMS) scores and lower serum testosterone levels compared to young males.
- Histological analysis reveals degenerative changes in aged testes, with Leydig cells showing swollen mitochondria.
- Reduced expression of steroidogenic acute regulatory (StAR) protein and cholesterol-side-chain cleavage enzyme (P450scc) was observed in aged Leydig cells.
Impact:
- Findings link mitochondrial dysfunction and decreased StAR/P450scc expression to impaired testosterone synthesis in aging males.
- This study provides insights into the cellular mechanisms contributing to LOH.
- Highlights the need for further investigation into the precise mechanisms driving these changes.
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