effects of acute and chronic administration of methylprednisolone on oxidative stress in rat lungs
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2014
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Abstract
Objective: To determine the effects of acute and chronic administration of methylprednisolone on oxidative stress, as quantified by measuring lipid peroxidation (LPO) and total reactive antioxidant potential (TRAP), in rat lungs. Methods: Forty Wistar rats were divided into four groups: acute treatment, comprising rats receiving a single injection of methylprednisolone (50 mg/kg i.p.); acute control, comprising rats i.p. injected with saline; chronic treatment, comprising rats receiving methylprednisolone in drinking water (6 mg/kg per day for 30 days); and chronic control, comprising rats receiving normal drinking water. Results: The levels of TRAP were significantly higher in the acute treatment group rats than in the acute control rats, suggesting an improvement in the pulmonary defenses of the former. The levels of lung LPO were significantly higher in the chronic treatment group rats than in the chronic control rats, indicating oxidative damage in the lung tissue of the former. Conclusions: Our results suggest that the acute use of corticosteroids is beneficial to lung tissue, whereas their chronic use is not. The chronic use of methylprednisolone appears to increase lung LPO levels.
| Reference Key |
torres2014jornaleffects
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|---|---|
| Authors | ;Ronaldo Lopes Torres;Iraci Lucena da Silva Torres;Gabriela Laste;Maria Beatriz Cardoso Ferreira;Paulo Francisco Guerreiro Cardoso;Adriane Belló-Klein |
| Journal | cryobiology |
| Year | 2014 |
| DOI |
10.1590/S1806-37132014000300006
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| URL | |
| Keywords | Keywords not found |
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