Gut Microbiota-Modulated Glutamic Acid Rejuvenates The Quality Of Oocytes Deteriorated By Advanced Reproductive Age
The community of microorganisms living in our gut, known as the gut microbiota, is increasingly recognized for its vital role in maintaining overall health. However, its specific influence on the age-related decline in the quality of a female’s eggs, or oocytes, has been a mystery.
Recent research has shed light on this connection, demonstrating that establishing a “young” gut microbiota in older mice, through a process called fecal microbiota transplantation, effectively improved the quality of their aged oocytes. This rejuvenation included enhanced ovulation and maturation of the eggs, along with a reduction in abnormalities such as cytoplasm fragmentation and issues with the spindle and chromosomes.
The study pinpointed that a specific bacterium, Bacteroides_caecimuris, and the amino acid glutamic acid, were key players in these restorative effects. They work by strengthening the function of mitochondria, which are often referred to as the “powerhouses” of cells, crucial for energy production.
Interestingly, simply supplementing with glutamic acid also improved the quality of aged oocytes, and this beneficial effect was observed across different species. These findings underscore the significant role of the gut microbiota in the aging process of oocytes and open new avenues for potential strategies to improve female fertility as they age.
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