PMID- 10588923 OWN - NLM STAT- MEDLINE DCOM- 20000302 LR - 20240315 IS - 0007-1188 (Print) IS - 0007-1188 (Linking) VI - 128 IP - 8 DP - 1999 Dec TI - Cardioprotection by the phytoestrogen genistein in experimental myocardial ischaemia-reperfusion injury. PG - 1683-90 AB - 1. Soybean phytoestrogens have no oestrogen agonist effects on the reproductive system and therefore it is reasonable to explore the potential of these naturally occurring plant oestrogens in the cardiovascular pathology. We therefore investigated the effects of genistein in a rat model of myocardial ischaemia-reperfusion injury. 2. Anaesthetized rats were subjected to total occlusion (45 min) of the left main coronary artery followed by 5 h reperfusion (MI/R). Sham operated rats were used as controls. Myocardial necrosis, myocardial myeloperoxidase activity (MPO), serum creatinine phosphokinase activity (CPK), serum and macrophage Tumour Necrosis Factor-alpha (TNF-alpha), cardiac intercellular adhesion molecule-1 (ICAM-1) immunostaining, cardiac mRNA for ICAM-1 evaluated by the means of reverse transcriptase polymerase chain reaction (RT - PCR), ventricular arrhythmias and myocardial contractility (left ventricle dP/dt(max)) were evaluated. 3. Myocardial ischaemia and reperfusion in untreated rats produced marked myocardial necrosis, increased serum CPK activity and MPO activity both in the area-at-risk and in the necrotic area, reduced myocardial contractility, caused ventricular arrhythmias and induced a marked increase in serum and macrophage TNF-alpha. Furthermore myocardial ischaemia-reperfusion injury increased ICAM-1 expression in the myocardium. 4. Administration of genistein (1 mg kg(-1), i.v., 5 min after coronary artery occlusion) lowered myocardial necrosis and MPO activity in the area-at-risk and in the necrotic area, decreased serum CPK activity, increased myocardial contractility, decreased the occurrence of ventricular arrhythmias, reduced serum and macrophages levels of TNF-alpha and blunted ICAM-1 expression in the injured myocardium. Finally genistein added in vitro to peritoneal macrophages collected from untreated rats subjected to myocardial ischaemia-reperfusion injury significantly reduced TNF-alpha production. 5. Our data suggest that genistein limits the inflammatory response and protects against myocardial ischaemia-reperfusion injury. FAU - Deodato, B AU - Deodato B AD - Institute of Pharmacology, School of Medicine, University of Messina, Torre Biologica, Policlinico Universitario, Via C. Valeria, Gazzi, 98125 Messina, Italy. FAU - Altavilla, D AU - Altavilla D FAU - Squadrito, G AU - Squadrito G FAU - Campo, G M AU - Campo GM FAU - Arlotta, M AU - Arlotta M FAU - Minutoli, L AU - Minutoli L FAU - Saitta, A AU - Saitta A FAU - Cucinotta, D AU - Cucinotta D FAU - Calapai, G AU - Calapai G FAU - Caputi, A P AU - Caputi AP FAU - Miano, M AU - Miano M FAU - Squadrito, F AU - Squadrito F LA - eng PT - Journal Article PL - England TA - Br J Pharmacol JT - British journal of pharmacology JID - 7502536 RN - 0 (Cardiovascular Agents) RN - 0 (Tumor Necrosis Factor-alpha) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - DH2M523P0H (Genistein) RN - EC 1.11.1.7 (Peroxidase) RN - EC 2.7.3.2 (Creatine Kinase) SB - IM MH - Animals MH - Cardiovascular Agents/*therapeutic use MH - Creatine Kinase/drug effects/metabolism MH - Female MH - Genistein/*therapeutic use MH - Intercellular Adhesion Molecule-1/drug effects/metabolism MH - Myocardial Ischemia/*drug therapy/metabolism MH - Myocardial Reperfusion Injury/*drug therapy/metabolism MH - Ovariectomy MH - Peroxidase/drug effects/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Tumor Necrosis Factor-alpha/drug effects/metabolism MH - Ventricular Function, Left/drug effects PMC - PMC1571810 EDAT- 1999/12/10 09:00 MHDA- 2000/03/04 09:00 PMCR- 2000/12/01 CRDT- 1999/12/10 09:00 PHST- 1999/12/10 09:00 [pubmed] PHST- 2000/03/04 09:00 [medline] PHST- 1999/12/10 09:00 [entrez] PHST- 2000/12/01 00:00 [pmc-release] AID - 0702973 [pii] AID - 10.1038/sj.bjp.0702973 [doi] PST - ppublish SO - Br J Pharmacol. 1999 Dec;128(8):1683-90. doi: 10.1038/sj.bjp.0702973.