superoxide


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Related to superoxide: hydroxyl radical, superoxide dismutase

superoxide

 [soo″per-ok´sīd]
any compound containing the highly reactive superoxide ion O2, a common intermediate in numerous biological oxidations.

su·per·ox·ide

(sū'pĕr-oks'īd),
An oxygen free radical, O2-, which is toxic to cells.

su·per·ox·ide

(sū'pĕr-oks'īd)
An oxygen free radical, O2-. which is toxic to cells.
References in periodicals archive ?
The research team suspected that bilirubin's ability to regulate superoxide originated in its chemical structure, which allows it to grab on to and neutralize the harmful molecule in a way that other antioxidants, such as glutathione and cysteine, cannot.
Optimum pH was determined by assaying the superoxide dismutase at different pH ranging from 4-8.5 with each 0.5 difference.
Study of effect of examination stress on lipid peroxidation and superoxide dismutase level.
Changes in the superoxide radical and superoxide dismutase levels in the uterus of Rattus norvegicus during the estrous cycle and a possible role for superoxide radical in uterine oedema and cell proliferation at proestrus.
Superoxide radical-scavenging activity (%) = [1 - (As1 - As2) / As0] x 100, where As0 is the absorbance of the control (distilled water instead of sample); As1 is the absorbance of the test sample mixed with reaction solution, and As2 is the absorbance of the sample alone (distilled water instead of superoxide radical generating system solution).
Superoxide is also an intermediate involved in the paramagnetic or diamagnetic transformations of hemoglobin during the transport of oxygen in the activated neuron (7).
Degoul, "The Ala16Val genetic dimorphism modulates the import of human manganese superoxide dismutase into rat liver mitochondria," Pharmacogenetics, vol.
Superoxide dismutase, copper-zinc superoxide dismutase, and manganese superoxide dismutase are located in the granulosa and theca cells of developing follicles (17).
Conclusion: Levels of serum superoxide dismutase were elevated with concomitant amplification of copper-zinc superoxide dismutase gene.
Richardson, "Electrostatic recognition between superoxide and copper, zinc superoxide dismutase," Nature, vol.
The cell responses, that is, membrane permeabilization detected by PI or superoxide radical accumulation detected by DHE, were monitored at room temperature for 3 h in 15 min intervals using an inverted fluorescence microscope (IX-71, Olympus, Tokyo, Japan) equipped with a CCD camera.
The swelling of nasal mucosa is known to be caused by histamine released from mast cells whose activation is related to a high level intracellular superoxide [18], which is nothing but the very substrate of TAT-SOD.