منابع مشابه
The Expression of Heme Oxygenase-1 in Human-Derived Cancer Cell Lines
Background: Heme oxygenase-1 (HO-1) is a cytoprotective and antiapoptotic enzyme, which has been involved in maintaining cellular homeostasis, and plays an important protective role by modulating oxidative injury. Up-regulation of (HO-1) has contributed to tumorogenicity of some cancers. In this study we investigated the expression pattern of the HO-1, in five different human-derived cancer cel...
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The seminal discovery of nitric oxide (NO) in the 1980s unraveled the novel concept that an endogenous production of a gaseous substance such as NO can impart diverse and critical functional effects on a wide spectrum of biological and pathological processes. Intense investigations in the chemistry and biology of NO have led to numerous fruitful discoveries, enhancing our understanding of many ...
متن کاملHeme Oxygenase-1: A Potential Antihypertensive Target?
The heme oxygenase (HO) system has received significant attention in recent years as a possible novel target for antihypertensive therapy. HO is the rate limiting enzyme in the metabolism of heme releasing bioactive molecules carbon monoxide (CO) and bilirubin each with beneficial cardiovascular actions. Induction of HO-1 has been demonstrated to lower blood pressure in several animal models of...
متن کاملHow Heme Oxygenase-1 Prevents Heme-Induced Cell Death
Earlier observations indicate that free heme is selectively toxic to cells lacking heme oxygenase-1 (HO-1) but how this enzyme prevents heme toxicity remains unexplained. Here, using A549 (human lung cancer) and immortalized human bronchial epithelial cells incubated with exogenous heme, we find knock-down of HO-1 using siRNA does promote the accumulation of cell-associated heme and heme-induce...
متن کاملHeme Proteins, Heme Oxygenase-1 and Oxidative Stress
Heme is ferrous protoporphyrin-IX that is the prosthetic group of hemoproteins, such as hemoglobin, myoglobin and cytochromes that are of vital importance. In contrast, “free heme”, a protein-unbound heme, that is either just synthesized but yet not incorporated into hemoproteins, or that is released from hemoprotein under oxidative conditions, is highly toxic, since it catalyzes the production...
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ژورنال
عنوان ژورنال: Circulation
سال: 2006
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circulationaha.105.598698