PMID- 29026158 OWN - NLM STAT- MEDLINE DCOM- 20190701 LR - 20211204 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 7 IP - 1 DP - 2017 Oct 12 TI - Ginsenoside Rb1 prevents homocysteine-induced EPC dysfunction via VEGF/p38MAPK and SDF-1/CXCR4 activation. PG - 13061 LID - 10.1038/s41598-017-13436-7 [doi] LID - 13061 AB - Hyperhomocystinemia (HHcy) is known as an independent risk factor for cardiovascular disease. Our previous study showed that ginsenoside Rb1, the major active constituent of ginseng, prevents homocysteine (Hcy)-induced endothelial damage. However, the role of ginsenoside Rb1 in Hcy-induced dysfunction in endothelial progenitor cells (EPCs) remains unknown. In the study, we found that ginsenoside Rb1 reversed the Hcy-induced impairment of adhesive and migratory ability in EPCs which were significantly abolished by CXCR4 antagonist AMD3100 and VEGFR2 inhibitor SU5416. Ginsenoside Rb1 significantly reversed Hcy-induced SDF-1 reduction in the supernatant and in the serum. Ginsenoside Rb1 reversed downregulation of SDF-1 and VEGFR2 protein expression, inhibition of p38MAPK phosphorylation induced by Hcy. Re-endothelialization in balloon-injured carotid arteries significantly increased with EPCs transplant, and was even better with Rb1 treatment. This effect was significantly abolished by AMD3100. AMD3100 also decreased the number of CM-DiI labeled EPCs in injured arteries. Here we show for the first time that Rb1 prevents Hcy-induced EPC dysfunction via VEGF/p38MAPK and SDF-1/CXCR4 activation. These findings demonstrate a novel mechanism of the action of Rb1 that may have value in prevention of HHcy associated cardiovascular disease. FAU - Lan, Tao-Hua AU - Lan TH AD - Department of Cardiology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, P. R. China. AD - School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, Hong Kong. FAU - Xu, Dan-Ping AU - Xu DP AD - Department of Cardiology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, P. R. China. FAU - Huang, Man-Ting AU - Huang MT AD - Department of Cardiology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, P. R. China. FAU - Song, Ju-Xian AU - Song JX AD - School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, Hong Kong. FAU - Wu, Huan-Lin AU - Wu HL AD - Department of Cardiology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, P. R. China. heart-center2@gzucm.edu.cn. FAU - Li, Min AU - Li M AD - School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, Hong Kong. limin@hkbu.edu.hk. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20171012 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Benzylamines) RN - 0 (Chemokine CXCL12) RN - 0 (Cyclams) RN - 0 (Ginsenosides) RN - 0 (Heterocyclic Compounds) RN - 0 (Indoles) RN - 0 (Pyrroles) RN - 0 (Vascular Endothelial Growth Factor A) RN - 0LVT1QZ0BA (Homocysteine) RN - 71IA9S35AJ (Semaxinib) RN - 7413S0WMH6 (ginsenoside Rb1) RN - EC 2.7.10.1 (Vascular Endothelial Growth Factor Receptor-2) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - S915P5499N (plerixafor) SB - IM MH - Animals MH - Benzylamines MH - Cell Movement/drug effects MH - Cell Survival/drug effects MH - Chemokine CXCL12/blood/metabolism MH - Cyclams MH - Endothelial Progenitor Cells/*drug effects/*metabolism MH - Ginsenosides/*pharmacology MH - Heterocyclic Compounds/pharmacology MH - Homocysteine/*pharmacology MH - Indoles/pharmacology MH - Male MH - Phosphorylation/drug effects MH - Pyrroles/pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Vascular Endothelial Growth Factor A/blood/*metabolism MH - Vascular Endothelial Growth Factor Receptor-2/blood/metabolism MH - p38 Mitogen-Activated Protein Kinases/blood/*metabolism PMC - PMC5638839 COIS- The authors declare that they have no competing interests. EDAT- 2017/10/14 06:00 MHDA- 2019/07/02 06:00 PMCR- 2017/10/12 CRDT- 2017/10/14 06:00 PHST- 2017/03/29 00:00 [received] PHST- 2017/09/25 00:00 [accepted] PHST- 2017/10/14 06:00 [entrez] PHST- 2017/10/14 06:00 [pubmed] PHST- 2019/07/02 06:00 [medline] PHST- 2017/10/12 00:00 [pmc-release] AID - 10.1038/s41598-017-13436-7 [pii] AID - 13436 [pii] AID - 10.1038/s41598-017-13436-7 [doi] PST - epublish SO - Sci Rep. 2017 Oct 12;7(1):13061. doi: 10.1038/s41598-017-13436-7.