Zhishi Xiebai Guizhi Decoction modulates hypoxia and lipid toxicity to alleviate pulmonary vascular remodeling of pulmonary hypertension in rats

Min Fu, Yuan Li, Jingjing Liu, Junjie Liu, Jiaoxia Wei, Yuxin Qiao, Hanxin Zhong, Dongyang Han, Haitao Lu*, Li Yao*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

Abstract

Background: Pulmonary hypertension (PH) is a severe cardio-pulmonary vascular disease, involves complex molecular mechanism especially during the pathological process of pulmonary vascular remodeling, brings a significant challenge to clinical treatment and thus resulting in high mortality rates. Classic Traditional Chinese medicine formula, Zhishi Xiebai Guizhi Decoction (ZXGD), holds therapeutic potential for PH. In present study, we sought to explore therapeutic potential of ZXGD against PH in rats.

Methods: We employed a combination methods of chemical profiling, echocardiographic, morphologic measurements, molecular biology, rats models and cultured pulmonary artery smooth muscle cells (PASMCs) to achieve this.

Results: Eighteen compounds were precisely identified in ZXGD using UHPLC-QTOF-MS/MS. Our data demonstrated ZXGD could alleviate PH by reducing pulmonary artery pressure and alleviating pulmonary vascular remodeling in rats. Specifically, ZXGD was found to intervene in abnormal expansion of PASMCs, thereby attenuating pulmonary vascular remodeling. ZXGD was also observed to modulate expressions of HIF-1α, ROS, and Nrf2 to alleviate hypoxia and oxidative stress. Additionally, ZXGD significantly regulated disorders in pro-inflammatory cytokines, thus mitigating inflammation. Furthermore, ZXGD decreased levels of decadienyl-l-carnitine and LDL-C, while elevating HDL-C and lipid droplet counts, thereby reducing cholesterol and lipid toxicity and preserving mitochondrial function. Importantly, inhibition of HIF-1α reversed expression of key pathological triggers for pulmonary vascular remodeling. Neohesperidin and naringin in ZXGD extract were identified as the primary contributors to its pharmacological effects against PH.

Conclusion: Altogether, our study empirically explored therapeutic potential and pharmacological mechanisms of ZXGD in treating PH, offering a groundwork for the development of novel anti-PH drugs.

Original languageEnglish
Article number173
Number of pages18
JournalChinese Medicine
Volume19
Issue number1
DOIs
Publication statusPublished - Dec 2024

Scopus Subject Areas

  • Pharmacology
  • Complementary and alternative medicine

User-Defined Keywords

  • Chemical compounds
  • HIF-1α
  • Pulmonary hypertension
  • Pulmonary vascular remodeling
  • Zhishi Xiebai Guizhi Decoction

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