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In the present study, we investigated the intervention effects of a purified Polygonatum cyrtonema polysaccharide (PCP) on high-fat diet (HFD)-induced atherosclerosis in male and female LDLr−/− mice. Results showed that HFD caused severe dyslipidemia, atherosclerotic lesions, oxidative damages and inflammation in male and female mice, and these effects seemed to be more pronounced in males than in females. However, the above variations could be dose-dependently reversed by PCP treatment, and the intervention effects on males were greater than those on females. Nuclear factor kappa-B (NFκB), mitogen-activated protein kinase (MAPKs) and protein kinase B (Akt) are 3 pivotal signaling pathways mediating the development of atherosclerosis. Consistently, PCP was also found to significantly decrease the phosphorylation of p65, p38, extracellular-regulated kinase 1/2 (ERK1/2) and Akt, and increase the protein expression of inhibitor of NF-κB (IκB) in the aortas of male and female mice induced by HFD. Taken together, these findings indicated that PCP could be effective for the prevention of atherosclerosis, and the intervention effect of PCP on male mice was more obvious than that of female mice.


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The interventional effect of Polygonatum cyrtonema Hua polysaccharide on atherosclerosis in mice of different sexes

Show Author's information Anjun Guoa,b,1Xueying Lia,b,1Lihua PanaQiangming LiaJianping Luoa,bXueqiang Zhaa,b,c,( )
Engineering Research Centre of Bioprocess of Ministry of Education, Hefei University of Technology, Hefei 230009, China
School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
Key Laboratory of Metabolism and Regulation for Major Disease of Anhui Higher Education Institutes, Hefei University of Technology, Hefei 230009, China

1These authors contributed equally to this work.

Peer review under responsibility of Tsinghua University Press.

Abstract

In the present study, we investigated the intervention effects of a purified Polygonatum cyrtonema polysaccharide (PCP) on high-fat diet (HFD)-induced atherosclerosis in male and female LDLr−/− mice. Results showed that HFD caused severe dyslipidemia, atherosclerotic lesions, oxidative damages and inflammation in male and female mice, and these effects seemed to be more pronounced in males than in females. However, the above variations could be dose-dependently reversed by PCP treatment, and the intervention effects on males were greater than those on females. Nuclear factor kappa-B (NFκB), mitogen-activated protein kinase (MAPKs) and protein kinase B (Akt) are 3 pivotal signaling pathways mediating the development of atherosclerosis. Consistently, PCP was also found to significantly decrease the phosphorylation of p65, p38, extracellular-regulated kinase 1/2 (ERK1/2) and Akt, and increase the protein expression of inhibitor of NF-κB (IκB) in the aortas of male and female mice induced by HFD. Taken together, these findings indicated that PCP could be effective for the prevention of atherosclerosis, and the intervention effect of PCP on male mice was more obvious than that of female mice.

Keywords: Sex, Polygonatum cyrtonema polysaccharide, Anti-atherosclerosis

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Received: 08 April 2022
Revised: 12 May 2022
Accepted: 10 July 2022
Published: 01 June 2023
Issue date: January 2024

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© 2024 Beijing Academy of Food Sciences. Publishing services by Tsinghua University Press.

Acknowledgements

This study was financially supported by the National Natural Science Foundation of China (32072176; 31271814);the Outstanding Youth Funds of Anhui Province (2208085J31); and the Fundamental Research Funds for the Central Universities (JZ2022HGQA0232; JZ2022HGTA0316).

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