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Heart Fail Rev. 2002 Oct;7(4):407-22.

The role of NOS in heart failure: lessons from murine genetic models.

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Division of Cell & Molecular Biology, The Toronto General Hospital Research Institute, 12EN-221, 101 College St, Toronto, ON, M5G 2C4, Canada.


Nitric Oxide Synthases (NOSs) are a group of related proteins that produce nitric oxide (NO). In mammals, there are three known members of this gene family: nNOS (NOS1), iNOS (NOS2) and eNOS (NOS3). Each has been disrupted by targeted gene ablation in mice and the corresponding phenotypes examined. These mice have allowed an examination of the contribution of each NOS in a variety of experimental models and continue to provided insights into the patho-physiological role of NOS and NO. With increasing sophistication, murine transgenic approaches continue to offer a wealth of information, and invaluable tools to further study the NOS system. The focus of this review will be an examination of the tools available, and the insights gained from studies done on murine NOS genetic models in the context of heart failure.

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