PMID- 19150247 OWN - NLM STAT- MEDLINE DCOM- 20100108 LR - 20091102 IS - 1879-1336 (Electronic) IS - 1054-8807 (Linking) VI - 18 IP - 6 DP - 2009 Nov-Dec TI - The effects of NK4 on viral myocarditis mice. PG - 323-31 LID - 10.1016/j.carpath.2008.10.008 [doi] AB - NK4 may be a promising agent to inhibit tumor invasion and metastasis. To observe the effects of NK4 on the cardiovascular system with pathological injury and to discuss the mechanism, we established an experimental model of viral myocarditis (VCM) by coxsackievirus B3 infection in Balb/c mice on Day 0 and administered NK4 twice daily to the VCM and control mice from Day 20 to Day 45. We then evaluated the cardiac function by means of ultrasonic inspection. Hepatocyte growth factor, TNF (tumor necrosis factor)-alpha, and angiotensin II levels in the myocardial tissue were measured with enzyme-linked immunosorbent assay. Myocardium histopathology was examined with hematoxylin and eosin stain. Collagen deposition of the myocardium was detected through Masson staining. Microvessel staining with the RECA antibody and apoptosis detection with terminal deoxynucleotidyl transferase-mediated dUTP-biotin end labeling were performed in the myocardium. The changes in MMP3 (matrix metalloproteinase 3), MMP9, TIMP1 (tissue inhibitor of metalloproteinase 1), and TGF (transforming growth factor)-beta1 expression in the myocardium were measured by reverse-transcriptase polymerase chain reaction. We found that NK4 intervention increased TGF-beta and angiotensin II expression, suppressed MMPs, improved the activities of TIMPs, and then promoted collagen deposition in the myocardium. NK4 intervention also decreased the microvessels' density and increased the apoptotic cell count in the myocardia of VCM mice. However, we did not observe the obvious changes in the myocardia of control mice after NK4 intervention. These data suggest that NK4 made negative impacts on the restoration of cardiac function and the recovery from VCM in the experimental mice. FAU - Shen, Difei AU - Shen D AD - Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, P.R. China. FAU - Tang, Qizhu AU - Tang Q FAU - Huang, Zhengrong AU - Huang Z FAU - Chen, Ying AU - Chen Y FAU - Xiong, Ran AU - Xiong R FAU - Wu, Hui AU - Wu H FAU - Huang, Ji AU - Huang J FAU - Feng, Siting AU - Feng S FAU - Yan, Ling AU - Yan L FAU - Bian, Zhouyan AU - Bian Z LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090115 PL - United States TA - Cardiovasc Pathol JT - Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology JID - 9212060 RN - 0 (Angiogenesis Inhibitors) RN - 0 (Cytokines) RN - 67256-21-7 (Hepatocyte Growth Factor) RN - EC 3.4.24.- (Matrix Metalloproteinases) SB - IM MH - Angiogenesis Inhibitors/*pharmacology MH - Animals MH - Apoptosis/drug effects MH - Coxsackievirus Infections/drug therapy/pathology MH - Cytokines/biosynthesis MH - Echocardiography MH - Enzyme-Linked Immunosorbent Assay MH - Hepatocyte Growth Factor/metabolism MH - In Situ Nick-End Labeling MH - Male MH - Matrix Metalloproteinases/drug effects/metabolism MH - Mice MH - Mice, Inbred BALB C MH - Myocarditis/*drug therapy/*pathology MH - Myocardium/pathology MH - Reverse Transcriptase Polymerase Chain Reaction EDAT- 2009/01/20 09:00 MHDA- 2010/01/09 06:00 CRDT- 2009/01/20 09:00 PHST- 2007/12/16 00:00 [received] PHST- 2008/08/11 00:00 [revised] PHST- 2008/10/21 00:00 [accepted] PHST- 2009/01/20 09:00 [entrez] PHST- 2009/01/20 09:00 [pubmed] PHST- 2010/01/09 06:00 [medline] AID - S1054-8807(08)00153-1 [pii] AID - 10.1016/j.carpath.2008.10.008 [doi] PST - ppublish SO - Cardiovasc Pathol. 2009 Nov-Dec;18(6):323-31. doi: 10.1016/j.carpath.2008.10.008. Epub 2009 Jan 15.