The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.
Signaling Pathways in Reactive Oxygen Species–Induced Cardiomyocyte Apoptosis
Open accessAbstract
Background —The importance of free radical homeostasis and apoptosis in normal and diseased hearts and their interrelationships are poorly defined. We tested whether reactive oxygen species can trigger apoptosis in cardiomyocytes, and we explored the underlying pathways. Methods and Results —A cell culture model of isolated cardiac cells and different reactive oxygen species (ROS)–generating systems were used. Apoptosis became evident when cardiomyocytes were exposed to either H 2 O 2 or superoxide anion (O 2 − ). Both H 2 O 2 - and O 2 − -induced apoptosis of cardiomyocytes were associated with an increase in p53 protein content, whereas protein levels of Bax and Bcl-2 were unaltered. H 2 O 2 , but not O 2 − , induced an increase in the protein content of Bad. Furthermore, H 2 O 2 elicited translocation of Bax and Bad from cytosol to mitochondria, where these factors formed heterodimers with Bcl-2, which was followed by the release of cytochrome c , activation of CPP32, and cleavage of poly(ADP-ribose) polymerase. Interestingly, this pathway was not activated by O 2 − . Instead, O 2 − used Mch2α to promote the apoptotic pathway, as revealed by the activation of Mch2α and the cleavage of its substrate, lamin A. Conclusions —Taken together, these results indicate that ROS may play an important pathophysiological role in cardiac diseases characterized by apoptotic cell death and suggest that different ROS-induced activations of the apoptotic cell death program in cardiomyocytes involve distinct signaling pathways.
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Cellular Stress Responses: Cell Survival and Cell Death
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Oxygen, oxidative stress, hypoxia, and heart failure
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Diabetic Cardiomyopathy: Evidence, Mechanisms, and Therapeutic Implications
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Myocardial Cell Death in Human Diabetes
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Metadata
- Authors
- von Harsdorf, R., Li, P.-F., & Dietz, R.
- Venue
- Circulation
- Published
- 1999-06-08
- Volume
- 99
- Issue
- 22
- Pages
- 2934-2941
- ISSN
- 0009-7322 (ISSN-L)
- 1524-4539
- OpenAlex
- W1997832379
- Cited by
- 571
- References
- 26
- FWCI
- 10.00
- Type
- journal article
- Language
- en
- Open access
- bronze
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- von Harsdorf, R., Li, P.-F., & Dietz, R. (1999). Signaling Pathways in Reactive Oxygen Species–Induced Cardiomyocyte Apoptosis. Circulation. https://doi.org/10.1161/01.cir.99.22.2934
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