Effect of OKY-046 on airway hyperresponsiveness induced by ozone in dogs.
نویسندگان
چکیده
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15 صفحه اولOzone-induced modulation of airway hyperresponsiveness in guinea pigs.
Although acute exposure to ozone (03*) has been shown to influence the severity and prevalence of airway hyperresponsiveness, information has been lacking on effects due to long-term exposure at relatively low exposure concentrations. The goals of this study were to determine whether long-term repeated ozone exposures could induce nonspecific hyperresponsiveness in normal, nonatopic (nonsensiti...
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Ozone causes airway hyperresponsiveness (AHR) and pulmonary inflammation. Rho kinase (ROCK) is a key regulator of smooth muscle cell contraction and inflammatory cell migration. To determine the contribution of the two ROCK isoforms ROCK1 and ROCK2 to ozone-induced AHR, we exposed wild-type, ROCK1(+/-), and ROCK2(+/-) mice to air or ozone (2 ppm for 3 h) and evaluated mice 24 h later. ROCK1 or ...
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During ozone (O(3)) exposure, adult mice decrease their minute ventilation (VE). To determine whether there are age-related differences in the ventilatory response to O(3), A/J mice, aged 2, 4, 8, or 12 wk, were exposed to O(3) (0.3-3.0 parts/million for 3 h) in nose-only exposure plethysmographs. Baseline VE normalized for body weight (VE/g) decreased with increasing age, consistent with the h...
متن کاملOzone-induced airway hyperresponsiveness: roles of ROCK isoforms.
Acute ozone (O3) inhalation has been shown to cause airway and pulmonary epithelial injury with accompanying inflammation responses. Robust evidence exists that O3 induces airway hyperresponsiveness (AHR) in humans and in animal models. Several pathways exist that culminate in airway smooth muscle contraction, but the mechanism(s) by which O3 elicits AHR are unclear. Here, we review the recent ...
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ژورنال
عنوان ژورنال: Folia Pharmacologica Japonica
سال: 1990
ISSN: 0015-5691,1347-8397
DOI: 10.1254/fpj.95.5_271