灰毡毛忍冬化学成分研究V灰毡毛忍冬素F和G的结构测定

Lonicera macranthoides Hand. -Mazz of Caprifoliaceae is the sources of Jinyinhua, which is a well known antipyretic and antidote in traditional Chinese medicine. Chemical studies led us to isolate 11 new compounds.Further purification of a bioactive fraction from the EtOAc soluble portion yielded two new compounds named macranthoin F and G,Their structures wereelucidated as methyl 3,4-O-dicaffeoylquinate(Ⅰ)and methyl 3,5-O-dicaffeoylquinate(Ⅱ).     

脊柱侧弯板棍系统的体外生物力学测试

目的　测试脊柱侧弯板棍系统 (PRSS)内固定后脊柱标本的刚度及其钉钩的拔出力 ,并根据与完整脊柱刚度的比较来评估根据该内固定系统临床应用的可靠性。方法　选择 12节段猪脊柱标本 12具 ,测定其前屈、后伸、侧屈及旋转时的刚度 ;再切除前方的椎间盘和后方的小关节使脊柱失稳 ,重复各向运动刚度测试 ;然后使用PRSS在失稳脊柱标本上进行内固定 ,再重复各向运动刚度测试。通过自身对照比较了解PRSS内固定后脊柱的刚度 ;选择单节段猪胸椎标本 6个及腰椎标本 7个 ,分别拧入PRSS钉钩后进行拔出力测试。结果　在猪脊柱标本前屈、后伸、旋转及侧屈活动的刚度测试中 ,与完整脊柱的刚度相比 ,失稳脊柱各向运动的刚度均明显减小 (P <0 .0 5 ) ,而PRSS内固定后脊柱各向运动的刚度均明显高于完整脊柱 (P <0 .0 5 )。在猪脊椎标本上 ,PRSS胸椎钉钩的拔出力为 (5 46 .0 4± 142 .94)N ,腰椎钉钩的拔出力为 (90 8.5 0± 2 13.0 9)N ,胸椎钉钩的拔出力明显小于腰椎钉钩的拔出力 (P <0 .0 5 )。结论　PRSS内固定术后脊柱的刚度高于完整脊柱 ,其钉钩可提供一定的提拉力。     

Antigenic heterogeneity of human mononuclear phagocytes: immunohistologic analysis using monoclonal antibodies

Eight monoclonal antibodies to cell surface antigens of human monocytes were evaluated as immunologic markers for recognition of macrophages in sections of normal and diseased tissues, using immunoperoxidase and enzyme histochemical techniques. Monoclonal antibodies assessed were PHM2, PHM3, FMC17, FMC32, FMC33, FMC34, OKM1, and 63D3. Sites studied were human bone marrow, blood, lymph node, spleen, thymus, liver, kidney, lung, and peritoneal lavages, rejecting renal allografts containing inflammatory macrophages, and granulomata showing epithelioid and multinucleate giant cell formation. All antibodies bound to at least some tissue macrophages and, except for FMC32 and FMC33 antibodies, which were identically distributed, each antibody had a distinctive tissue distribution. Some antigens were shared by other bone-marrow-derived cells (megakaryocytes and cortical thymocytes), endothelium, epithelium, and dendritic cells. Antigenic differences were also detected between mononuclear phagocytes present at different sites, different stages of differentiation, and likely different states of activation. These studies provide evidence of major antigenic differences between various populations of human mononuclear phagocytes. They therefore indicate the need for careful evaluation of experiments involving the recognition of macrophages in tissue sections and smears based solely on the use of antimonocyte monoclonal antibodies.     

盐酸塞利洛尔合成工艺改进

目的:合成盐酸塞利洛尔,并进行工艺改进。方法:革除溴化反应,对醚化反应进行了优化。结果:使合成路线缩短一步,醚化收率比文献值提高20％以上。结论:该路线较适合于工业化生产。