简介:文章以聚乙二醇2000衍生化二硬脂酿嶙脂酰乙醇胺(PEG2000-DSPE)为载体,采用薄膜分散法制备前列地尔(PGE1)肢束,评价其制剂学性质;并对其大鼠体内分布及金黄地鼠微循环血管药理作用进行研究.实验结果表明PGE1胶束在大鼠体内生物利用度和各组织含药量方面均高于PGE1注射剂;PGE1肢束对微血管作用强于PGE1注射剂,可显著降低血压、维持管径和血流速度并增强微血管自律运动.
简介:Afacileone-potsynthesisofα-cyclodextrin-basedpolyrotaxane(PR)inaqueoussolutionisreported,wherethepeptideglutathionewasusedastheend-cappingagentandthethiol-eneMichaeladditionwasusedastheend-cappingreaction.Bothpolyrotaxaneswithlowthreadingratioandhighthreadingratioweresuccessfullyobtained.Incontrasttotheconventionallyusedmultiple-stepsynthesismethodsandhydrophobicendcappers,thisone-potaqueoussynthesisaswellasthebiocompatibilityoftheend-cappingagentcouldresultinamuchmorebiocompatiblePRtobeusedasbiomaterials.
简介:基本上在在vitro和细胞外的矩阵种相关房间上面做的织物工程。织物工程的一个主要目标到preparate多孔为房间的三尺寸脚手架增殖,移居,differention并且形成理想的织物和机关的结构。在这研究,各种各样的内容的效果和到chitosan的木钉的macromolecular重量被调查并且评估。chitosan的毛孔形态学被改变集中控制,PEG.Chitosan多孔的支架的macromolecular重量有interconecting孔。毛孔形态学能与改变木钉集中和macromolecular重量被控制。毛孔尺寸在之间1050嗯,在水里胀大的度是85.70%。
简介:Injectablenanoparticlecarrier,poly(ethyleneglycol)-coatedpoly(ethylcyanoacrylate)hasbeenpreparedbyasimplemethod.AtFirst,synthesizingPEGmacromonomerofpoly(ethyleneglycol)monomethyletherwithacryloylchloride,thengraftcopolymerofpoly(ethylcyanoacrylate)andpoly(ethyleneglycol)wasyieldbyfreeradicalpolymerizationofethylcyanoacrylatewithPEGmacromonomerintoluenesolvent.CharacterizationofthecopolymerhasbeenperformedbyFTIR,1H-NMRandGPCanalysis.Nanoparticleswereeasilypreparedfromtheobtainedamphiphiliccopolymer.