Pinobanksin ameliorates perfluorooctane sulfonate-evoked cardiotoxicity via targeting Nrf-2/Keap-1, oxidative damage and inflammation in Sprague Dawley rats.

Perfluorooctane sulfonate (PFOS) is a potent environmental toxicant which affects crucial organs of the body including the heart. Pinobanksin (PBN) exhibits marvelous medicinal values owing to its excellent therapeutic properties. This investigation was executed to assess the curative potential of PBN against PFOS instigated cardiac dysfunction in rats. Twenty-four albino rats (Rattus norvegicus) were apportioned into 4 groups including the control, PFOS (10 mgkg), PFOS (10 mgkg) + PBN (20 mgkg) and PBN (20 mgkg) alone provided group. Our findings showed that PFOS intoxication reduced the activities of glutathione reductase (GSR), superoxide dismutase (SOD), glutathione peroxides (GPx), glutathione S-transferase (GST), Heme Oxygenase-1 (HO-1) and catalase (CAT) while reducing the concentrations of malondialdehyde (MDA) and reactive oxygen species (ROS). Moreover, PFOS intoxication increased the concentrations of creatine kinase-myocardial band (CK-MB), creatine phospho-kinase (CPK), lactate dehydrogenase (LDH) and troponin I. Furthermore, cardiac inflammation was provoked after PFOS provision that was evident by augmented levels of pro-inflammatory markers. The administration of PFOS upregulated the expressions of Bcl-2-associated X protein (Bax) and cysteine-aspartic acid protease-3 (caspase-3), while reducing the expressions of B-cell lymphoma protein 2 (Bcl-2). Nonetheless, the histopathological analysis showed significant cardiac damage after PFOS intoxication. However, PBN treatment alleviated cardiac impairments because of its tremendous oxidation curtailing properties.