Catalytic spectrofluorimetric determination of superoxide anion radical and superoxide dismutase activity using N,N-dimethylaniline as the substrate for horseradish peroxidase (HRP)

2002 ◽  
Vol 58 (12) ◽  
pp. 2557-2562 ◽  
Author(s):  
Bo Tang ◽  
Yan Wang ◽  
Zhen-zhen Chen
Keyword(s):  
Superoxide Dismutase ◽  
Horseradish Peroxidase ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Superoxide Anion Radical ◽  
Superoxide Dismutase Activity ◽  
Spectrofluorimetric Determination

Simultaneous electrochemical determination of superoxide anion radical and nitrite using Cu,ZnSOD immobilized on carbon nanotube in polypyrrole matrix

2010 ◽  
Vol 26 (2) ◽  
pp. 689-695 ◽  
Author(s):  
Seenivasan Rajesh ◽  
Anantha Koteswararao Kanugula ◽  
Kalpana Bhargava ◽  
Govindaswamy Ilavazhagan ◽  
Srigiridhar Kotamraju ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Electrochemical Determination ◽  
Superoxide Anion Radical

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

1991 ◽  
Vol 69 (4) ◽  
pp. 313-316 ◽  
Author(s):  
M. Laloraya ◽  
G. P. Kumar ◽  
M. M. Laloraya
Keyword(s):  
Cell Proliferation ◽  
Superoxide Dismutase ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Superoxide Radical ◽  
Inverse Correlation ◽  
Oestrous Cycle ◽  
Superoxide Anion Radical ◽  
Albino Rat ◽  
Cyclic Changes

Superoxide anion radical, a radical whose toxicity is well documented, is present in the uterus of albino rat. The cyclic changes that it undergoes during the reproductive cycle are also illustrated. An inverse correlation is seen between the levels of superoxide radical and the enzyme dismutating it, i.e., superoxide dismutase (EC 1.15.1.1), which is also reported to be present in the uterus of albino rat and is shown to exhibit cyclic changes during its oestrous cycle. The high levels of superoxide radical at pro-oestrus enable us to hypothesize that superoxide may be involved in regulating the oedema and cell proliferation of the uterus during proestrus.Key words: superoxide anion radical, superoxide dismutase, uterus, oestrous cycle, uterine oedema, cell proliferation.

scholarly journals Open-Circuit Photovoltage Measurements Towards Determination of the Quintessential Features of Metal Titanates in Photo(Electro)catalytic Applications

2021 ◽  
Author(s):  
Szymon Wojtyła ◽  
Tomasz Baran
Keyword(s):  
Conduction Band ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Open Circuit ◽  
Superoxide Anion Radical ◽  
Band Edge ◽  
Conduction Band Edge ◽  
Flat Band ◽  
Open Circuit Photovoltage

Abstract Conduction band potential is one of the most crucial physicochemical properties of semiconductor towards photocatalytic and photoelectrochemical aplications. Inexpensive home-made Arduino devices is proposed for determination of flat band potential, based on the well-established method: open-circuit photovoltage measurements. To verify proposed measurement procedure, series of titanates has been prepared by a straightforward hydrothermal procedure and characterized – band structure of materials has been determined, in terms of band gap energy and conduction band edge potential. Finally we demonstrated the photocatalytic formation of superoxide anion radical. Interestingly, the efficiency of O2-• can be correlated, in part, with the potential of conduction band edge. Photocatalyst characterized by particularly low potential of conduction band edge can generate the superoxide anion radical with highest efficiency.

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