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Abstract Title:

Therapeutic effects of Nimbolide, an autophagy regulator, in ameliorating pulmonary fibrosis through attenuation of TGF-β1 driven epithelial-to-mesenchymal transition.

Abstract Source:

Int Immunopharmacol. 2019 Oct ;75:105755. Epub 2019 Aug 1. PMID: 31377591

Abstract Author(s):

M Prashanth Goud, Swarna Bale, Gauthami Pulivendala, Chandraiah Godugu

Article Affiliation:

M Prashanth Goud

Abstract:

Pulmonary fibrosis is an irreversible lung disorder with predictable decline in lung function leading to respiratory insufficiency. Incidence of pulmonary fibrosis has been apparently increasing worldwide. Though aetiology of this disease remains unclear, potential roles of infection, disordered cell biology, genetic influence etc. have been proposed. Pirfenidone and nintedanib are the only two US FDA approved drugs to treat pulmonary fibrosis. Autophagy is a catabolic intracellular pathway that plays a crucial role in maintaining cellular homeostasis, which is involved in many disorders including fibrotic diseases. The present study investigated the role of Nimbolide, an important active constituent of Neem in TGF-β1 induced in vitro and bleomycin induced in vivo model of pulmonary fibrosis, with a slight emphasis on regulation of fibrosis related autophagy. Protein expression studies showed significant reduction in mesenchymal, fibrotic markers and a substantial up regulation of epithelial markers upon treatment with Nimbolide. Nimbolide regulated autophagy signaling by dampening LC-3 and p-62 expression and increasing Beclin 1 expression as evidenced by immunohistochemistry and confocal microscopy. Our study demonstrates Nimbolide as a potent anti-fibrotic agent and its ability to regulate fibrosis associated autophagy.

Study Type : In Vitro Study

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