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Objective:To study the pharmacokinetics and tissue distribution characteristics of curcumin in turmeric capsules in rats.Methods:SD rats were given the capsules at the dose of 5 g· kg-1 , and plasma, liver, kidney, stomach and small intestine were withdrawn.Curcumin was determined by HPLC .Results:The results showed that the linear range of curcumin was 0.1-10μg· ml-1 .The metabolic results in vivo showed that t1/2 was (25.13 ±5.63) h, tmax was 0.50 h, Cmax was (0.44 ±0.01)μg· ml-1 , and AUC0-t was (2.11 ±0.04)μg· ml-1 · h.Meanwhile, curcumin could be detected out in gastrointestinal tract , liver and the other or-gans.Conclusion:Turmeric capsules can make curcumin rapidly absorbed and effectively distributed in various tissues of rats .The re-sults provide evidence for the clinical medication .
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Objective To observe the effects of hyperoxia solution on pulmonary surfactant and histology of rabbits with oleic acid-induced acute lung injury.Methods Thirty healthy rabbits weighing 2.0 - 2.5 kg were randomly divided into three groups with 10 rabbits each:control group,hyperoxia solution treatment group,and saline treatment group.Blood samples were taken for blood-gas analysis before and at 30,60 and 120 min after oleic acid or normal saline administration.Two hours later,the animals were killed and pathologic changes of lung tissue were observed microscopically.The expression of SP-A was investigated using the immunohistochemical method and image analysis system.Results PaO2 was significantly higher in hyperoxia solution treatment group than in saline treatment group two hours after treatment (P < 0.001 ),but PaCO2 was significantly lower than that in saline treatment group (P <0.001).Optical microscopy showed that lung tissue damage was milder in hyperoxia solution treatment group than in saline treatment group.The content of surfactant A in hyperoxia solution treatment group was significantly greater than that in saline treatment group (P < 0.001 ).Conclusion Hyperoxia solution can lessen lung tissue injury and damage to pulmonary surfactant.