РАДаР - Репозиторијум Архивираних Дигиталних Радова
Институт за биолошка истраживања "Синиша Станковић"
    • English
    • Српски
    • Српски (Serbia)
  • Српски (ћирилица) 
    • Енглески
    • Српски (ћирилица)
    • Српски (латиница)
  • Пријава
Преглед рада 
  •   ИБИСС РАДаР
  • IBISS
  • Article
  • Преглед рада
  •   ИБИСС РАДаР
  • IBISS
  • Article
  • Преглед рада
JavaScript is disabled for your browser. Some features of this site may not work without it.

Hydrogen peroxide affects contractile activity and anti-oxidant enzymes in rat uterus

2009
Аутори:
Appiah, Isabella
Milovanović, Slobodan R
Radojičić, Ratko M.
Nikolić-Kokić, Aleksandra
Slavić, Marija
Oreščanin Dušić, Zorana
Trbojević, Stevan
Skrbić, Ranko
Spasić, Mihajlo B.
Blagojević, Duško P.
Тип документа:
Чланак у часопису
Метаподаци
Приказ свих података о документу
Апстракт:
Background and purpose: The effects of hydrogen peroxide (H(2)O(2)) on uterine smooth muscle are not well studied. We have investigated the effect and the mechanism of action of exogenous hydrogen peroxide on rat uteri contractile activity [spontaneous and calcium ion (Ca2+)-induced] and the effect of such treatment on anti-oxidative enzyme activities. Experimental approach: Uteri were isolated from virgin Wistar rats and suspended in an organ bath. Uteri were allowed to contract spontaneously or in the presence of Ca2+ (6 mM) and treated with H(2)O(2) (2 mu M-3 mM) over 2 h. Anti-oxidative enzyme activities (manganese superoxide dismutase-MnSOD, copper-zinc superoxide dismutase-CuZnSOD, catalase-CAT, glutathione peroxidase-GSHPx and glutathione reductase-GR) in H(2)O(2)-treated uteri were compared with those in uteri immediately frozen after isolation or undergoing spontaneous or Ca2+-induced contractions, without treatment with H(2)O(2). The effect of inhibitors (propranolol, methylene blue, L-NAME, tetraethylamonium, glibenclamide and 4-aminopyridine) on H(2)O(2)-mediated relaxation was explored. Key results: H(2)O(2) caused concentration-dependent relaxation of both spontaneous and Ca2+-induced uterine contractions. After H(2)O(2) treatment, GSHPx and MnSOD activities were increased, while CuZnSOD and GR (In Ca2+-induced rat uteri) were decreased. N omega-nitro-L-arginine methyl ester antagonized the effect of H(2)O(2) on Ca2+-induced contractions. H(2)O(2)-induced relaxation was not affected by propranolol, potentiated by methylene blue and antagonized by tetraethylamonium, 4-aminopyridine and glibenclamide, with the last compound being the least effective. Conclusions and implications: H(2)O(2) induced dose-dependent relaxation of isolated rat uteri mainly via changes in voltage-dependent potassium channels. Decreasing generation of reactive oxygen species by stimulation of anti-oxidative pathways may lead to new approaches to the management of dysfunctional uteri.
Извор:
British Journal of Pharmacology, 2009, 158, 8, -1941

ISSN: 0007-1188

[ Google Scholar ]
URI
http://ibiss-r.rcub.bg.ac.rs/123456789/1421
Колекције
  • Article
Институција
IBISS

DSpace software copyright © 2002-2015  DuraSpace
О ИБИСС РАДаР репозиторијуму | Пошаљите запажања

RCUB
 

 

Комплетан репозиторијумКолекцијеАуториПо датуму издавањаТемеОва институцијаАуториПо датуму издавањаТеме

DSpace software copyright © 2002-2015  DuraSpace
О ИБИСС РАДаР репозиторијуму | Пошаљите запажања

RCUB