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Role of hydroxyl radical in superoxide induced microsomal lipid peroxidation: Protective effect of anion channel blocker
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ghosh, Salil K. Chakraborti, Tapati Banerjee, Arun Baran Roychoudhury, Sujata Chakraborti, Sajal |
| Copyright Year | 2007 |
| Abstract | Treatment of bovine pulmonary artery smooth muscle microsomes with the superoxide radical generating system hypoxanthine plus xanthine oxidase stimulated iron release, hydroxyl radical production and lipid peroxidation. Pretreatment of the microsomes with deferoxamine or dime thy lthiourea markedly inhibited lipid peroxidation, and prevented hydroxyl radical production without appreciably altering iron release. The superoxide radical generating system did not alter the ambient superoxide dismutase activity. However,addition of exogenous superoxide dismutase prevented superoxide radical induced iron release,hydroxyl radical production and lipid peroxidation. Simultaneous treatment of the microsomes with deferoxamine, dimethylthiourea or superoxide dismutase prevented hydroxyl radical production and liqid peroxidation. While deferoxamine or dimethylthiourea did not appreciably alter iron release, superoxide dismutase prevented iron release. However, addition of deferoxamine, dimethylthiourea or superoxide dismutase even 2 min after treatment did not significantly inhibit lipid peroxidation, hydroxyl radical production and iron release. Pretreatment of microsomes with the anion channel blocker 4,4’- dithiocyano 2,′- disulphonic acid stilbine did not cause any discernible change in chemiluminiscence induced by the superoxide radical generating system but markedly inhibited lipid peroxidation without appreciably altering iron release and hydroxial radical production. |
| Starting Page | 35 |
| Ending Page | 43 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/BF02716811 |
| Volume Number | 21 |
| Alternate Webpage(s) | http://www-old.ias.ac.in/jarch/jbiosci/21/35-43.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/BF02716811 |
| Journal | Journal of Biosciences |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
