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Journal of Chinese Pharmaceutical Sciences ›› 2024, Vol. 33 ›› Issue (3): 201-215.DOI: 10.5246/jcps.2024.03.016

• Original articles • Previous Articles     Next Articles

Enhanced protective effects of naringenin on elastase-induced mouse abdominal aortic aneurysm through nanoliposome delivery

Du Chen1,2,3,#, Maomao Yu2,3,#, Qingyi Zhang2,3, Rui Hu1,2,3,4, Xiqiao Zhou2,3, Bei Tai2,3, Youqun Lu2,3, Rong Qi2,3,1,*()   

  1. 1 Shihezi University College of Pharmacy; Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, Shihezi 832003, Xinjiang, China
    2 Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
    3 State Key Laboratory of Vascular Homeostasis and Remodeling. NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems; State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
    4 Karamay Central Hospital, Karamay 834000, Xinjiang, China
  • Received:2023-12-13 Revised:2024-01-16 Accepted:2024-02-24 Online:2024-03-31 Published:2024-03-31
  • Contact: Rong Qi
  • About author:

    # Du Chen and Maomao Yu contributed equally to this work.

  • Supported by:
    National Key Research and Development Program (Grant No. 2019YFE0113500).

Abstract:

Abdominal aortic aneurysm (AAA) is a severe inflammatory vascular illness characterized by the increased matrix metalloproteinases (MMPs), degradation of extracellular matrix (ECM), and inflammatory responses. Recent evidence indicates that naringenin (NGN), a bioactive flavanone, can inhibit AAA. However, the poor water solubility and oral absorption of NGN limit its efficacy. In this study, we developed a nanoliposome formulation of NGN (NGN-NL) to enhance the preventive effect of NGN on AAA induced by pancreatic elastase in mice. We investigated the NGN-NL prescription and found that a 9:1 ratio of phospholipids to NGN was the optimized formulation. Additionally, we observed that NGN, when prepared into liposomes, demonstrated a stronger ability to counteract LPS-induced macrophage M1 polarization compared to the physical mixture of NGN with the prescription materials of liposomes. Moreover, at an equal dose, NGN-NL exhibited a better inhibitory effect on macrophage M1 polarization than NGN alone. Furthermore, the liposome carrier itself displayed some extent of anti-M1 polarization properties, synergistically enhancing NGN’s ability to inhibit macrophage M1 polarization. In vivo experiments revealed that intraperitoneal administration of NGN-NL at an NGN dose of 25 mg/kg on alternate days demonstrated a similar effect to a double dose of NGN crude drug (50 mg/kg) in preventing AAA. This was evidenced by an overall improvement in abdominal aorta diameter dilation, preservation of aortic structural integrity, mitigation of elastin degradation, reduction in macrophage infiltration, and downregulation of MMP-2 and MCP-1 in the abdominal aortas. However, an equal dose of NGN crude drug (25 mg/kg) could not efficiently inhibit the occurrence and development of AAA compared with NGN-NL. In conclusion, NGN-NL significantly improved NGN’s efficacy in inhibiting mouse AAA, demonstrating its potential application in clinical AAA treatment in the future.

Key words: Nanoliposome, Naringenin, Abdominal aortic aneurysm, Inflammation

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