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- W2025678056 abstract "Objective: Sildenafil is a phosphodiesterase 5 inhibitor which is used for the treatment of erectile dysfunction. Inhibition of phosphodiesterase 5 promotes alveolar growth and angiogenesis, and attenuates inflammation and airway reactivity in animal models. We aimed to investigate the effects of nebulized sildenafil in asthma attack. Material and Methods: In all mice, except Group 1 (control), chronic asthma was established with repeated intraperitonal and aerosolized ovalbumin administrations. In three groups of chronic asthmatics (Group 3, 4 and 5), asthma attack was developed with increasing doses of methacoline inhalation. Afterwards,s nebulized sildenafil (0.07 mg/ml), nebulized budesonide (0.25mg/ml) and nebulized saline were given to Group 3, 4 and 5, respectively. Group 1 and Group 2 were not treated with either methacholine or nebulized therapies. Heart rates and oxygen saturations were measured. Blood gas analyses were performed and lung histologies were examined by light and electron microscopies. Results: Thicknesses of basement membrane, subepithelial smooth muscle layer and epithelium and numbers of mast and goblet cells were significantly lower in control group (Group 1) compared to the chronic asthmatics (Group 2) (p<0.001, p=0.002, p=0.001, p<0.001, p<0.001, respectively). These results suggested that the model of chronic asthma was successfully established. Numbers of mast cells were significantly lower in sildenafil group compared to the saline group (p=0.020). Oxygen saturation, heart rate, and blood gas parameters did not show differences between the treatment groups. Conclusion: Nebulized sildenafil significantly decreased the numbers of mast cells compared to placebo. Nevertheless, nebulized sildenafil was nor effective on oxygen saturation, heart rate, and blood gas parameters." @default.
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- W2025678056 date "2013-01-01" @default.
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- W2025678056 title "Effects of Nebulized Sildenafil on Lung Histology, Oxygen Saturation and Blood Gas Parameters in Asthma Attack of BALB/c Mice" @default.
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