【摘 要】
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In this study, we investigated the effects of dexamethasone, pertussis toxin (a Gi protein inhibitor), and actinomycin (a transcription inhibitor) on serum nitr
【机 构】
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Department of Neurology, Air Force General Hospital, Beijing 100142, China“,”Department of Neurobiol
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In this study, we investigated the effects of dexamethasone, pertussis toxin (a Gi protein inhibitor), and actinomycin (a transcription inhibitor) on serum nitric oxide synthase activity and nitric oxide content in a rat model of lung disease-induced brain injury. High-dose dexamethasone (13 mg/kg) and dexamethasone + actinomycin reduced lung water content, increased serum nitric oxide synthase activity and nitric oxide content, diminished inflammatory cell infiltration in pulmonary alveolar interstitium, attenuated meningeal vascular hyperemia, reduced glial cell infiltration, and decreased cerebral edema. These results demonstrate that high-dose glucocorticoid treatment can reduce the severity of lung disease-induced brain injury by increasing nitric oxide synthase activity and nitric oxide levels.
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