ArticleAnimals : an open access journal from MDPI2026
Pyrroloquinoline Quinone Alleviates Tris(1,3-Dichloro-2-Propyl) Phosphate-Induced Damage During Mouse Oocyte Maturation.
Article in Animals : an open access journal from MDPI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Tris(1,3-dichloro-2-propyl) phosphate (TDCIPP) is a ubiquitous organophosphate flame retardant posing potential threats to reproductive health. Given that TDCIPP toxicity is often linked to oxidative stress, pyrroloquinoline quinone (PQQ), a potent natural antioxidant and mitochondrial nutrient, was hypothesized to mitigate these adverse effects. This study investigated the impact of TDCIPP exposure on the in vitro maturation of mouse oocytes and evaluated the protective role of PQQ. Using an in vitro maturation model, we assessed the toxic effects of TDCIPP by examining the first polar body extrusion (PBE) rate and cumulus expansion, followed by analyses of oxidative stress (ROS and GSH), mitochondrial integrity (ATP content and distribution), and apoptosis-related markers through transcriptome sequencing (Smart RNA-seq), quantitative real-time PCR, and immunofluorescence. The results demonstrated that TDCIPP significantly suppressed cumulus expansion and reduced the PBE rate. Mechanistically, TDCIPP induced severe oxidative stress, disrupted mitochondrial function, and activated the apoptotic pathway. Furthermore, TDCIPP triggered early apoptotic signaling by downregulating
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