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Green tea protects cytoskeleton from oxidative injury in cardiomyocytes

Green tea protects cytoskeleton from oxidative injury in cardiomyocytes

Authors :
Eleonora Pagnotta
Cristina Angeloni
Lanfranco Masotti
Natalia Calonghi
Pierluigi Biagi
Silvana Hrelia
E. Pagnotta
N. Calonghi
S. Hrelia
L. Masotti
P.L. Biagi
C. Angeloni
Publication Year :
2006

Abstract

Cardiac ischemia/reperfusion injury results in oxidative stress and poor physiological recovery. Episodes of hypoxia/reoxygenation (H/R) cause some subtle functional and structural alterations in sarcolemma, mithocondria, sarcoplasmic reticulum, nucleus, as well as cytoskeleton. In this report, by using cultured rat cardiomyocytes and laser confocal microscopy we have verified the possibility to counteract cytoskeleton alterations induced by H/R with the supplementation of an antioxidant agent, a green tea extract (GTE), and compared its effects to those of alpha-tocopherol. Moreover the effects of GTE on cell viability and cytosolic antioxidant activity have been evaluated. H/R induced myocardial damage occurs as histological alterations such as degeneration and disorganization of the cytoskeleton and loss of structural integrity of the nucleus. GTE supplementation increases cytosolic antioxidant activity and shows protective effects on cardiomyocyte cytoarchitecture and viability.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....69ad3aa1c2b109e4cc688c9c808c2027