Oligomeric proanthocyanidin ameliorates sepsis-associated renal tubular injury: involvement of oxidative stress, inflammation, PI3K/AKT and NFκB signaling pathways

• 발행기관: 대한생리학회-대한약리학회
• 저자명: Enhui Cui Qijing Wu Haiyan Zhu Weiqian Tian
• 간행물 정보: 『The Korean Journal of Physiology & Pharmacology』제29권 제2호, 165~178쪽, 전체 14쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2025.03.01

국문 초록

Sepsis is a potentially fatal infectious disease that easily causes shock and numerous organ failures. The kidney is one of the most susceptible to injury. Early intervention and renal protection significantly minimize patient mortality. Oligomeric proanthocyanidin (OPC), a naturally occurring plant compound, has a high potential for renal protection. This study was aimed at exploring the potential renoprotective role of OPC in sepsis-related renal tubular injury. C57/B6 mice were intraperitoneally injected with lipopolysaccharide (LPS) to simulate sepsis-related acute kidney injury in vivo. Renal function and pathology were assessed. RNA sequencing examined OPC mechanisms against LPS-induced renal injury. Oxidative stress indicators and inflammatory cytokines in blood serum and renal tissues were evaluated. In vitro, MTT assays assess cell viability. Apoptosis cells were detected using Hoechst 33342 and propidium iodide staining. Western blot assessed PI3K/AKT and NFκB signaling pathway proteins. OPC reduced LPS-induced renal tubular injury, improved renal functions and pathological changes, restored glutathione content, superoxide dismutase activity, and catalase activity, inhibited malondialdehyde overproduction, and suppressed LPS-induced overproduction of pro-inflammatory cytokines and the decline of anti-inflammatory cytokines. OPC attenuated LPS-induced cell morphological injury, reduced cell viability loss, and recovered the changes in proteins involved in PI3K/AKT and NFκB signaling pathways in MTEC cells. OPC protects against LPSinduced renal tubular injury by counteracting oxidative stress, inhibiting inflammatory responses, activating the PI3K/AKT signaling pathway, and inhibiting the NFκB signaling pathway. It may provide a viable solution to lessen renal injury in patients with sepsis.

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INTRODUCTION

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ACKNOWLEDGEMENTS

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키워드

Inflammation NFκB Oligomeric proanthocyanidin Oxidative stress PI3K-AKT Sepsis-associated renal tubular injury