PMID- 33204526 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201119 IS - 2090-8016 (Print) IS - 2090-0597 (Electronic) IS - 2090-0597 (Linking) VI - 2020 DP - 2020 TI - Rejuvenated Circulating Endothelial Progenitor Cells and Nitric Oxide in Premenopausal Women with Hyperhomocysteinemia. PG - 5010243 LID - 10.1155/2020/5010243 [doi] LID - 5010243 AB - Hyperhomocysteinemia (HHcy) induced endothelial dysfunction is associated with disturbance in circulating endothelial progenitor cells (EPCs). Nevertheless, whether this unfavorable effect of HHcy on circulating EPCs also exists in premenopausal women is still unknown. Therefore, this leaves an area for the investigation of the difference on the number and activity of circulating EPCs in premenopausal women with hyperhomocysteinemia and its underlying mechanism. The number of circulating EPCs was measured by fluorescence-activated cell sorter analysis, as well as DiI-acLDL and lectin fluorescent staining. The migration and proliferation of circulating were evaluated by the Transwell chamber assay and MTT. Additionally, the endothelial function and levels of nitric oxide (NO), VEGF, and GM-CSF in plasma and culture medium were determined. The number or activity of circulating EPCs and flow-mediated dilatation (FMD) in premenopausal women with or without HHcy were higher than those in postmenopausal women. However, no significant effect of HHcy on the number or activity of circulating EPCs in premenopausal women was observed. A similar alteration in NO level between the four groups was observed. There was a correlation between FMD and the number or activity of EPCs, as well as NO level in plasma or secretion by EPCs. For the first time, our findings illuminated the quantitive or qualitative alterations of circulating EPCs and endothelial function in premenopausal patients with HHcy are preserved, which was associated with retained NO production. The recuperated endothelial repair capacity is possibly the potential mechanism interpreting cardiovascular protection in premenopausal women with HHcy. CI - Copyright (c) 2020 Long Peng et al. FAU - Peng, Long AU - Peng L AD - Department of Cardiovascular Medicine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China. FAU - Gu, Qianlin AU - Gu Q AD - The Division of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan 2th Road, Yuexiu District, Guangzhou 510080, China. FAU - Huang, Zhenhua AU - Huang Z AD - The Division of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan 2th Road, Yuexiu District, Guangzhou 510080, China. FAU - Zeng, Lijin AU - Zeng L AD - The Division of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan 2th Road, Yuexiu District, Guangzhou 510080, China. FAU - Chu, Chang AU - Chu C AUID- ORCID: 0000-0002-6842-2897 AD - Department of Cardiovascular Medicine and Dongguan Cardiovascular Institute, The Third People's Hospital of Dongguan City, Dongguan 523326, China. FAU - Yang, Xiaoan AU - Yang X AUID- ORCID: 0000-0001-5520-2919 AD - Department of Infectious Diseases, The 3rd Affiliated Hospital, Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou 510630, China. LA - eng PT - Journal Article DEP - 20201031 PL - United States TA - Cardiol Res Pract JT - Cardiology research and practice JID - 101516542 PMC - PMC7657675 COIS- The authors declare that there are no conflicts of interest regarding the publication of this paper. EDAT- 2020/11/19 06:00 MHDA- 2020/11/19 06:01 PMCR- 2020/10/31 CRDT- 2020/11/18 05:59 PHST- 2020/02/05 00:00 [received] PHST- 2020/09/08 00:00 [revised] PHST- 2020/09/24 00:00 [accepted] PHST- 2020/11/18 05:59 [entrez] PHST- 2020/11/19 06:00 [pubmed] PHST- 2020/11/19 06:01 [medline] PHST- 2020/10/31 00:00 [pmc-release] AID - 10.1155/2020/5010243 [doi] PST - epublish SO - Cardiol Res Pract. 2020 Oct 31;2020:5010243. doi: 10.1155/2020/5010243. eCollection 2020.