17 November 2017 : Laboratory Research
Intermedin Ameliorates Atherosclerosis by Increasing Cholesterol Efflux Through the cAMP-PKA Pathway in Macrophage RAW264.7 Cell LineHang Liao1ABCDEF, Shixi Wan1ABEF, Xin Zhang1ABC, Di Shi1ABF, Xiaojiang Zhu1AB, Xiaoping Chen1AE*
Med Sci Monit 2017; 23:5462-5471
BACKGROUND: The aim of this study was to explore the role of intermedin and its mechanism in cholesterol efflux of macrophage THP-1 and RAW264.7 cell lines in atherosclerosis (AS).
MATERIAL AND METHODS: ApoE–/– mice were fed with a high-fat diet, and the concentrations of total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were measured. The lipidoses of the aortic sinus were analyzed by hematoxylin and eosin staining, and the cAMP level was detected by enzyme-linked immunosorbent assay (ELISA). The expressions of ATP-binding cassette transporter (ABCA1) were tested by real-time PCR and Western blot analysis.
RESULTS: IMD decreased serum TC and LDL-C, and increased serum HDL-C level in apoE–/– mice and attenuated AS plaque areas. In vitro, IMD increased intracellular cAMP concentration in a dose-dependent manner in THP-1 and RAW264.7 cell lines, which enhanced the expression of ABCA1 and increased cholesterol efflux rate. However, this effect was inhibited by PKAI in the RAW 264.7 cell line but not in the THP-1 cell line.
CONCLUSIONS: IMD can ameliorate the development of AS in ApoE–/– mice and regulate cholesterol balance in the RAW264.7 cell line through the cAMP-PKA pathway.
Keywords: atherosclerosis, ATP Binding Cassette Transporter 1, Cyclic AMP-Dependent Protein Kinase RIalpha Subunit, Cyclic AMP-Dependent Protein Kinases
01 November 2021 : EditorialEditorial: What Can be Learned from National and International Vaccine Adverse Event Reporting Systems During the COVID-19 Pandemic?
Med Sci Monit 2022; 28:e935299
26 November 2021 : EditorialEditorial: SARS-CoV-2 Vaccine Responses and Breakthrough COVID-19
Med Sci Monit In Press; DOI: 10.12659/MSM.935624
08 November 2021 : Database AnalysisVirtual Screening and Molecular Docking to Study the Mechanism of Chinese Medicines in the Treatment of Cor...
Med Sci Monit In Press; DOI: 10.12659/MSM.934102
01 November 2021 : EditorialEditorial: What Can be Learned from National and International Vaccine Adverse Event Reporting Systems Duri...
Med Sci Monit 2022; 28:e935299
29 Nov 2021 : Database AnalysisIntegrated Analysis of Angiogenesis-Mediated Tumor Immune Microenvironment Pattern in Hepatocellular Carcin...
Med Sci Monit In Press; DOI: 10.12659/MSM.934937
26 Nov 2021 : Clinical ResearchSerum Uric Acid Levels in Relation to Atrial Fibrillation: A Case-Control Study
Med Sci Monit In Press; DOI: 10.12659/MSM.934007
26 Nov 2021 : Database AnalysisNetwork Pharmacology Integrated Molecular Docking Revealed the Mechanism of Jianpi Yiqi Taohua Decoction Ag...
Med Sci Monit In Press; DOI: 10.12659/MSM.933537
Most Viewed Current Articles
20 Mar 2020 : Clinical ResearchSocial Capital and Sleep Quality in Individuals Who Self-Isolated for 14 Days During the Coronavirus Diseas...
Med Sci Monit 2020; 26:e923921
15 Apr 2020 : Clinical ResearchPsychological Impact and Coping Strategies of Frontline Medical Staff in Hunan Between January and March 20...
Med Sci Monit 2020; 26:e924171
05 May 2020 : Review articleAn Evidence Based Perspective on mRNA-SARS-CoV-2 Vaccine Development
Med Sci Monit 2020; 26:e924700