Department of Pharmacy
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Item Renoprotective effect of esculetin against ischemic acute kidney injury-diabetic comorbidity(Taylor & Francis, 2024-02) Gaikwad, Anil Bhanudas; Jadhav, Hemant R.Mitophagy maintains cellular homeostasis by eliminating damaged mitochondria. Accumulated damaged mitochondria can lead to oxidative stress and cell death. Induction of the PINK1/Parkin-mediated mitophagy is reported to be renoprotective in acute kidney injury (AKI). Esculetin, a naturally available coumarin, has shown protective action against diabetic complications. However, its effect on AKI-diabetes comorbidity has not been explored yet. Therefore, we aimed to investigate the renoprotective effect of esculetin against AKI under diabetic conditions via regulating PINK1/Parkin-mediated mitophagy. For this, type 1 diabetic male Wistar rats were treated with two doses of esculetin (50 and 100 mg/kg/day orally) for five days followed by AKI induction by bilateral ischemic-reperfusion injury (IRI). NRK-52E cells grown in high glucose were exposed to sodium azide (10 mM) for induction of hypoxia/reperfusion injury (HRI) in-vitro. Esculetin (50 µM) treatment for 24 h was given to the cells before HRI. The in-vitro samples were utilized for cell viability and ΔΨm assay, immunoblotting, and immunofluorescence. Rats’ plasma, urine, and kidney samples were collected for biochemical analysis, histopathology, and western blotting. Our results showed a significant decrease in kidney injury-specific markers and increased expression of mitophagy markers (PINK1 and Parkin) with esculetin treatment. Moreover, esculetin prevented the HRI and hyperglycemia-induced decrease in ΔΨm and autophagosome marker. Also, esculetin therapy reduced oxidative stress via increased Nrf2 and Keap1 expression. Esculetin attenuated AKI under diabetic condition by preventing mitochondrial dysfunction via inducing PINK1/Parkin-mediated mitophagy, suggesting its potential as an effective therapy for preventing AKI-diabetes comorbidity.Item Network pharmacology combined with molecular docking and dynamics to assess the synergism of esculetin and phloretin against acute kidney injury-diabetes comorbidity(Springer, 2024-04) Jadhav, Hemant R.; Gaikwad, Anil BhanudasAcute kidney injury (AKI) is a global health concern with high incidence and mortality, where diabetes further worsens the condition. The available treatment options are not uniformly effective against the complex pathogenesis of AKI–diabetes comorbidity. Hence, combination therapies based on the multicomponent, multitarget approach can tackle more than one pathomechanism and can aid in AKI–diabetes comorbidity management. This study aimed to investigate the therapeutic potential of esculetin and phloretin combination against AKI–diabetes comorbidity by network pharmacology followed by validation by molecular docking and dynamics. The curative targets for diabetes, AKI, esculetin, and phloretin were obtained from DisGeNET, GeneCards, SwissTargetPrediction database. Further, the protein–protein interaction of the potential targets of esculetin and phloretin against AKI–diabetes comorbidity was investigated using the STRING database. Gene ontology and pathway enrichment analysis were performed with the help of the DAVID and KEGG databases, followed by network construction and analysis via Cytoscape. Molecular docking and dynamic simulations were performed to validate the targets of esculetin and phloretin against AKI–diabetes comorbidity. We obtained 6341 targets for AKI–diabetes comorbidity. Further, a total of 54 and 44 targets of esculetin and phloretin against AKI–diabetes comorbidity were retrieved. The top 10 targets for esculetin selected based on the degree value were AKR1B1, DAO, ESR1, PLK1, CA3, CA2, CCNE1, PRKN, HDAC2, and MAOA. Similarly, phloretin’s 10 key targets were ACHE, CDK1, MAPK14, APP, CDK5R1, CCNE1, MAOA, MAOB, HDAC6, and PRKN. These targets were enriched in 58 pathways involved in the pathophysiology of AKI–diabetes comorbidity. Further, esculetin and phloretin showed an excellent binding affinity for these critical targets. The findings of this study suggest that esculetin and phloretin combination as a multicomponent multitarget therapy has the potential to prevent AKI–diabetes comorbidity.Item A perspective on the development of small molecular neprilysin inhibitors (NEPi) with emphasis on cardiorenal disease(Elsevier, 2024-12) Jadhav, Hemant R.; Gaikwad, Anil BhanudasNeprilysin is a cell surface metallo-endopeptidase, commonly identified as neutral endopeptidase (NEP), that plays a crucial role in the cleavage of peptides, for example, natriuretic peptides, angiotensin II, enkephalins, endothelin, bradykinin, substance P, glucagon-like peptide and amyloid beta. In the case of heart failure, a significant upsurge in NEP activity and expression enhances the degradation of natriuretic peptides. Therefore, NEP inhibitors have gained attention in the field of cardiology. NEP has been studied for over 40 years; however, it has recently gained attention with the US FDA approval of a fixed dose combination of sacubitril (NEP inhibitor) and valsartan (AT-1 inhibitor) for chronic heart failure treatment. The present review elucidates the role of neprilysin in cardiorenal disease, its pathophysiology, and how NEP inhibition benefits. It also summarizes the research advances in NEP inhibitors (NEPi) and their structure-activity relationships. Moreover, the review provides insight into NEPi effectiveness - alone or combined with other cardiorenal protective agents. It is expected to help medicinal chemists synthesize and develop novel NEPi.