Probiotic Administration Mitigates Bisphenol A Reproductive Toxicity in Zebrafish

Area of Science:

• Environmental toxicology
• Reproductive biology
• Microbiology

Background:

• Bisphenol A (BPA) is an endocrine-disrupting compound with known adverse effects on reproduction in various species.
• Zebrafish (Danio rerio) are a valuable model for studying environmental contaminant impacts on fertility.
• Probiotics have shown potential in mitigating negative health effects in organisms.

Purpose of the Study:

• To investigate the efficacy of the probiotic mixture SLAb51 in counteracting BPA-induced reproductive toxicity in zebrafish.
• To analyze the effects of BPA and SLAb51 on reproductive gene expression in both male and female zebrafish.
• To assess the modulation of vitellogenin isoforms and spermatogenesis-related signals.

Main Methods:

• Zebrafish were exposed to BPA (10 µg/L) and/or supplemented with SLAb51 (10^9 CFU/g) for 28 days.
• Ovarian follicles (class III and IV) and liver tissues were analyzed.
• Gene expression related to oocyte maturation and spermatogenesis was investigated.
• Vitellogenin isoform modulation was assessed.

Main Results:

• In zebrafish exposed to both BPA and SLAb51, reproductive gene expression levels were significantly closer to control and probiotic-only groups.
• SLAb51 supplementation appeared to antagonize the adverse reproductive effects of BPA.
• The probiotic demonstrated a protective role against BPA-induced reproductive impairment.

Conclusions:

• The probiotic mixture SLAb51 shows potential in mitigating the negative impacts of BPA on zebrafish reproduction.
• This study provides the first evidence for SLAb51's role in improving reproduction and reducing endocrine disruptor effects.
• Further research into probiotics for reducing endocrine-disrupting compound impacts is warranted.