The underlying cause of reduced male fertility with ageing is becoming increasingly clear. Researchers have focused on the epididymis, an important part of the testicles where sperm cells mature. This location is crucial for sperm quality. As men age, its function deteriorates, which can ultimately lead to reduced fertility.
In the study, cells from the epididymis of young and older primates were compared. It was found that the protein FOXO1 is less abundant in the tissue of older animals. FOXO1 plays a role in preventing cellular ageing, also known as cellular senescence. When this protein decreases, the cells become damaged and begin to secrete inflammatory substances. This affects the surrounding tissue and disrupts its function.
This discovery helps to explain why the male reproductive system deteriorates as it ages, despite often functioning longer than the female system. Understanding these processes can lead to new strategies to keep reproductive capacity healthy for longer. Ultimately, this contributes to healthier ageing while preserving quality of life.
For everyone who attaches importance to healthy ageing, it is appealing that we are increasingly understanding how vital organs such as the testes age and how this might be influenced.
Source: Reason
