PMID- 25896131 OWN - NLM STAT- MEDLINE DCOM- 20160216 LR - 20181113 IS - 1573-4919 (Electronic) IS - 0300-8177 (Linking) VI - 405 IP - 1-2 DP - 2015 Jul TI - Hyperhomocysteinemia regulated SCF expression in cultured cardiomyocytes via modulation of NF-kappaB activities. PG - 197-203 LID - 10.1007/s11010-015-2411-5 [doi] AB - Hyperhomocysteinemia (HHcy) is an important, independent risk factor for coronary artery disease, especially for the myocardial infarction. Our previous study has shown that myocardial stem cell factor (SCF) mediated cardiac stem cells migration, which was involved in cardiac repair. However, it is not clear regarding the action of HHcy on the expression of SCF in cardiomyocytes. In the present study, cultured neonatal rat cardiomyocytes were treated with 20, 50, or 100 muM homocysteine (Hcy) for 5 h. Results showed an significantly increase of SCF expression with 20-50 muM Hcy incubation, which matched with elevated nuclear factor-kappaB (NF-kappaB) activities. Treatment with NF-kappaB inhibitor N-acetylcysteine significantly inhibited the increase of SCF. Nevertheless, 100 muM Hcy markedly decreased the expression of SCF, which was in accordance with the suppression of NF-kappaB activities. The present study indicated that HHcy regulated the expression of SCF in a concentration-dependent manner via modulation of NF-kappaB activities. Thus, HHcy may increase the risk for cardiovascular diseases not only by causing endothelial dysfunction but also by directly exerting detrimental effects on cardiomyocytes. FAU - Zhao, Xia AU - Zhao X AD - Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Da Dao, Wuhan, 430030, China, yespeony@126.com. FAU - Kuang, Dong AU - Kuang D FAU - Duan, Yuping AU - Duan Y FAU - Xiao, Guixiang AU - Xiao G FAU - Ni, Juan AU - Ni J FAU - Duan, Yaqi AU - Duan Y FAU - Wang, Guoping AU - Wang G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150421 PL - Netherlands TA - Mol Cell Biochem JT - Molecular and cellular biochemistry JID - 0364456 RN - 0 (NF-kappa B) RN - 0 (Stem Cell Factor) RN - WYQ7N0BPYC (Acetylcysteine) SB - IM MH - Acetylcysteine/pharmacology MH - Animals MH - Cell Movement/drug effects MH - Cells, Cultured MH - Hyperhomocysteinemia/*metabolism MH - Myocytes, Cardiac/drug effects/*metabolism MH - NF-kappa B/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Stem Cell Factor/*metabolism EDAT- 2015/04/22 06:00 MHDA- 2016/02/18 06:00 CRDT- 2015/04/22 06:00 PHST- 2014/12/26 00:00 [received] PHST- 2015/04/09 00:00 [accepted] PHST- 2015/04/22 06:00 [entrez] PHST- 2015/04/22 06:00 [pubmed] PHST- 2016/02/18 06:00 [medline] AID - 10.1007/s11010-015-2411-5 [doi] PST - ppublish SO - Mol Cell Biochem. 2015 Jul;405(1-2):197-203. doi: 10.1007/s11010-015-2411-5. Epub 2015 Apr 21.