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Insulin이 흰쥐의 LDH Isozyme에 미치는 영향
임중기,최기송 대한약학회 1976 약학회지 Vol.20 No.2
A series of experimental groups has been studied in the state of hypolycemia caused by a single intraperitoneal injection of insulin after 24 hrs of fasting albino rats and then the variation of LDH activities and LDH isozyme patterns in the liver, muscle and serum had been reported. The total LDH activity has been elevated in the liver and the muscle above the average level for control group, but increased continusly during 20 min and decreased in the 20-45 min intervals and increased again 45 min in the serum. The change of LDH isozyme patterns had been shown that in the liver LDH$_{5}$ was increased, LDH$_{4}$ was decreased and in the muscle LDH$_{1}$ was diminished by 30 min ws restored again after 45 min and LDH$_{2}$ decreased about 94 percentage at 30 min, decreased by 45 min and increased greater again after 45 min and in the muscle LDH$_{3}$, LDH$_{4}$, and LDH$_{5}$ were increased to the greatest by 20 min, decreased in 20-45 min intervals and increased again after 45 min.
정기섭,홍지웅,최기송,지상철,박은석 한국약제학회 2002 Journal of Pharmaceutical Investigation Vol.32 No.4
The oral bioavailability of itraconazole is variable and low in fasting state. This is mainly due to the low solubility of this drug. Bioavailability can be improved by changing the formulation and it is general that the liquid preparations show greater bioavailability than the solid dosage forms such as tablets and capsules do. Benzyl alcohol-water binary mixture showed the excellent solubilizing capacity for itraconazole but the release of the drug from the preparation needs to be enhanced. In this study, various nonionic surfactants and hydrophilic polymers, poloxamers, were screened to investigate their effects on the release of itraconazole from the liquid preparations. Poloxamer 407 showed the most enhancing effect on the drug release and the release rate was proportional to the amount of poloxamer 407 added. A liquid preparation of itraconazole, consisting of benzyl alcohol/water/poloxamer 407 ternary solvent system, released more than 80% of the total drug amount at 5 min and showed the possibility of a new formulation development.