Ad
related to: regulation of antioxidants in cancer treatment system in the body diagramcancer.osu.edu has been visited by 10K+ users in the past month
Search results
Results From The WOW.Com Content Network
Lipophilic antioxidants [3] and iron chelators [1] can prevent ferroptotic cell death. Researchers have identified roles in which oxytosis/ferroptosis can contribute to the medical field, such as the development of cancer therapies. [4] Ferroptosis activation plays a regulatory role on growth of tumor cells in the human body.
Small changes in cellular oxidant status can be sensed by specific proteins which regulate a set of genes encoding antioxidant enzymes. Such a global response induces an adaptive metabolism including ROS elimination, the bypass of injured pathways, reparation of oxidative damages and maintenance of reducing power.
Redox therapy is an experimental therapy [1] [2] that aims to effect an outcome by modifying the levels of pro-oxidant and antioxidant agents in cells. [3] The term "redox" is a contraction of "reduction-oxidation". For cancer patients, the therapy is predicated on the idea that the redox state of cells may have an effect on cancer development. [4]
Oxidative stress mechanisms in tissue injury. Free radical toxicity induced by xenobiotics and the subsequent detoxification by cellular enzymes (termination).. Oxidative stress reflects an imbalance between the systemic manifestation of reactive oxygen species and a biological system's ability to readily detoxify the reactive intermediates or to repair the resulting damage. [1]
Cancer cells with elevated ROS levels depend heavily on the antioxidant defense system. ROS-elevating drugs further increase cellular ROS stress level, either by direct ROS-generation (e.g. motexafin gadolinium, elesclomol) or by agents that abrogate the inherent antioxidant system such as SOD inhibitor (e.g. ATN-224, 2-methoxyestradiol) and ...
Antioxidants are helpful in reducing and preventing damage from free radical reactions because of their ability to donate electrons which neutralize the radical without forming another. Vitamin C, for example, can lose an electron to a free radical and remain stable itself by passing its unstable electron around the antioxidant molecule.
To counteract these reactive oxygen species, cells contain numerous antioxidant systems, including antioxidant vitamins such as vitamin C and vitamin E, and antioxidant enzymes such as superoxide dismutase, catalase, and peroxidases, [81] which detoxify the reactive species, limiting damage to the cell.
In cancer cells, major changes in gene expression increase glucose uptake to support their rapid growth. Unlike normal cells, which produce lactate only when oxygen is low, cancer cells convert much of the glucose to lactate even in the presence of adequate oxygen. This is known as the “Warburg Effect.”