ArticleCardiovascular drugs and therapy2025
Exercise Prevents Glucocorticoid-Induced Myocardial 4-Hydroxynonenal Production.
Article in Cardiovascular drugs and therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 1 citations in OpenAlex.
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7 authors at 3 institutions in 1 country.
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Abstract
purposeLong-term administration of glucocorticoids (GCs) increases myocardial oxidative stress. 4-Hydroxynonenal (4-HNE) protein adducts, a marker of oxidative damage, have been associated with several cardiovascular diseases, including atherosclerosis, cardiac hypertrophy, cardiomyopathy, and ischemia-reperfusion injury. Exercise training has been shown to have a protective effect on the heart by lowering the level of oxidative stress in cardiomyocytes. Therefore, we aimed to investigate the effect of long-term dexamethasone treatment and exercise training on myocardial 4-HNE levels.
methodsTwenty-four female Wistar albino rats were assigned to sedentary control-saline treated (C, n = 8), sedentary-dexamethasone treated (D, n = 8), and exercise training-dexamethasone treated (DE, n = 8) groups. Daily dexamethasone was injected for 28 days at a 1 mg kg
resultsThe administration of dexamethasone led to a significant elevation in 4-HNE levels in the myocardium of adult rats (p < 0.05; D vs. C). The concurrent implementation of exercise training impeded this increase (p > 0.05; DE vs. C). Exercise training induced a threefold increase in myocardial Hsp72 expression (p < 0.001; DE vs. C and D) and attenuated the dexamethasone-induced increase in Hsp25 phosphorylation (p < 0.05; C vs. D) (p < 0.001; DE vs. D).
conclusionOur results indicate that long-term administration of dexamethasone is associated with an increase in cardiac 4-HNE levels, which is hindered by the addition of exercise training.
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