Metformin protects against mouse oocyte apoptosis defects induced by arecoline

Area of Science:

• Reproductive Biology
• Toxicology
• Cell Biology

Background:

• Arecoline, a primary compound from Areca catechu, exhibits known cellular, neural, and genetic toxicity.
• The specific impact of arecoline on the female reproductive system remains largely uninvestigated.

Purpose of the Study:

• To elucidate the detrimental effects of arecoline exposure on the development and health of oocytes.
• To assess the potential protective role of metformin against arecoline-induced oocyte damage.

Main Methods:

• Oocyte development and fertilization were analyzed using immunofluorescence staining, qPCR, and Western blotting.
• Sperm binding assays and in vitro fertilization were employed to evaluate oocyte meiosis competence and embryo development following arecoline exposure.

Main Results:

• Arecoline exposure was found to disrupt actin filament dynamics, spindle assembly, and kinetochore-microtubule attachment stability in mouse oocytes, leading to aneuploidy and meiotic arrest.
• Arecoline treatment negatively impacted mitochondrial distribution, reduced ATP production, and elevated oxidative stress, culminating in oocyte apoptosis.
• Co-administration of metformin partially mitigated the observed damages caused by arecoline.

Conclusions:

• Metformin demonstrates a significant protective effect against arecoline-induced apoptosis in mouse oocytes.
• These findings suggest a potential therapeutic strategy for mitigating reproductive toxicity associated with arecoline exposure.