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Titolo:
4-HYDROXYRMONENAL, A NOVEL INDICATOR OF LIPID-PEROXIDATION FOR REPERFUSION INJURY OF THE MYOCARDIUM
Autore:
BLASIG IE; GRUNE T; SCHONHEIT K; ROHDE E; JAKSTADT M; HASELOFF RF; SIEMS WG;
Indirizzi:
FORSCH VERBUND BERLIN EV,FORSCHUNGSINST MOLEK PHARMAKOL,FORSCH GRP RADIKAL & ZELLBIOCHEM D-10315 BERLIN GERMANY HUMBOLDT UNIV BERLIN,PHYS MED & REHABIL KLIN D-10098 BERLIN GERMANY HERZOG JULIUS HOSP D-38655 BAD HARZBURG GERMANY
Titolo Testata:
American journal of physiology. Heart and circulatory physiology
fascicolo: 1, volume: 38, anno: 1995,
pagine: 14 - 22
SICI:
0363-6135(1995)38:1<14:4ANIOL>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
FREE-RADICALS; FUNCTIONAL RECOVERY; RAT HEARTS; OXYGEN; NUCLEOTIDE; ISCHEMIA; MALONDIALDEHYDE; PRODUCTS; DAMAGE; LIVER;
Keywords:
POSTISCHEMIC REPERFUSION INJURY; SPONTANEOUSLY HYPERTENSIVE RATS; ISOLATED RAT HEART; OXIDATIVE STRESS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
I.E. Blasig et al., "4-HYDROXYRMONENAL, A NOVEL INDICATOR OF LIPID-PEROXIDATION FOR REPERFUSION INJURY OF THE MYOCARDIUM", American journal of physiology. Heart and circulatory physiology, 38(1), 1995, pp. 14-22

Abstract

4-Hydroxynonenal (KNE) has been proposed as an important marker of radical-induced lipid peroxidation (LPO) during postischemic reperfusioninjury of the myocardium. Therefore, the liberation of HNE into the effluent of isolated perfused rat hearts was investigated. For the first time, the formation of the aldehyde is demonstrated in myocardium. During control perfusion, 1.28 +/- 0.33 pmol HNE . min(-1). mg protein(-1) were formed by the hearts of 18-mo-old Wistar-Kyoto (WKY) rats and2.74 +/- 1.12 pmol . min(-1). mg protein(-1) by those of 18-mo-old spontaneously hypertensive (SHR) rats, respectively. In the WKY group, HNE release increased to 3.35 +/- 1.13 pmol . min(-1). mg protein(-1) 2min after the onset of reperfusion following 30 min of total and global ischemia compared with the preischemic control period (P < 0.05). In the SHR group, HNE liberation was higher during reperfusion (8.66 +/- 1.33 pmol . min(-1). mg protein(-1), maximum at 2 min reperfusion) compared with both the respective preischemic control and the respective reperfusion interval of the WKY group (P < 0.05 each). The SHR rats showed signs of congestive cardiac failure of a decompensated hypertrophy in comparison to the normotensive WKY rats. Moreover, the SHR rat hearts exhibited a lower release of adenine nucleotide degradation products (adenine, inosine, hypoxanthine plus uric acid: 48.1 +/- 10.2 nmol . 30 min(-1). mg protein(-1); P < 0.05) and a diminished functionalrecovery (left ventricular developed pressure, 32 +/- 16 mmHg; P < 0.05) during 30 min of reperfusion compared with the WKY group (77.9 +/-14.4 nmol 30 min-1 . mg protein(-1); 90 +/- 21 mmHg). The results suggest that products of radical-induced LPO are generated and released from the reperfusion-injured failing myocardium in relation to the degree of functional deterioration. To evaluate this injury, HNE is a potent indicator.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/08/20 alle ore 08:27:25