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September 14, 2017Journal of Cellular and Molecular MedicineOpen Access

Salidroside suppressing LPS‐induced myocardial injury by inhibiting ROS‐mediated PI3K/Akt/mTOR pathway in vitro and in vivo

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Authors

LCLvyi ChenPLPeng LiuXFXin Feng

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Overview

Preclinical study demonstrates that salidroside alleviates endotoxin-induced myocardial injury in rat models and cardiac cells, suggesting therapeutic potential for inflammatory heart disease.

Key Points

  • To evaluate the protective effects of salidroside against lipopolysaccharide-induced myocardial injury and determine the role of the reactive oxygen species-mediated PI3K/Akt/mTOR signaling pathway.
  • Sprague-Dawley rats were randomly assigned to control, lipopolysaccharide (15 mg/kg), lipopolysaccharide plus dexamethasone (2 mg/kg), or lipopolysaccharide plus salidroside (20 or 40 mg/kg) groups to assess hemodynamics, myocardial histology, and serum biomarkers.
  • In vitro experiments utilized rat embryonic cardiomyoblast H9c2 cells exposed to lipopolysaccharide with or without salidroside and the antioxidant N-acetyl-L-cysteine.
  • Reactive oxygen species levels were quantified via flow cytometry, antioxidant enzymes and cytokines were measured spectrophotometrically, and pathway proteins were evaluated via Western blot.
  • Salidroside treatment in endotoxemic rats significantly preserved hemodynamic function, reduced cardiac damage markers (CK, LDH) and inflammatory cytokines (TNF-α, IL-6, IL-1β), and restored antioxidant enzyme activities (SOD, CAT, GSH-px).
  • Salidroside suppressed the expression of inflammatory mediators iNOS, COX-2, and NF-κB, alongside downregulating PI3K/Akt/mTOR pathway activation in vivo.
  • In H9c2 cells, salidroside and the ROS scavenger N-acetyl-L-cysteine similarly reduced intracellular reactive oxygen species generation and inhibited the downstream PI3K/Akt/mTOR signaling cascade.

Cite This Study

Chen et al. (2017) studied this question.

synapsesocial.com/papers/6a827b64ee46c620893ad4e8https://doi.org/10.1111/jcmm.12871
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