乳酸依沙吖啶溶液(冲洗剂)细菌内毒素的检测

目的:建立乳酸依沙吖啶溶液（冲洗剂）细菌内毒素的检测方法。方法:按照《中国药典》2010年版（二部）附录ⅪE和附录ⅠS对5批乳酸依沙吖啶溶液进行干扰试验和细菌内毒素检查。结果:质量浓度为1 mg·ml^-1的乳酸依沙吖啶溶液对鲎试剂与细菌内毒素之间的凝集反应无干扰作用,5个批号的样品细菌内毒素检查均符合规定。结论:建立的鲎试剂方法可用于乳酸依沙吖啶溶液细菌内毒素的检查,方法具有简便、快捷、可靠等优点。     

鲎试剂法检测注射用盐酸丙帕他莫中细菌内毒素

目的:考察鲎试剂方法检测注射用盐酸丙帕他莫中细菌内毒素的可行性。方法:参照《中国药典》2010年版（二部）附录ⅪE细菌内毒素检查法对注射用盐酸丙帕他莫进行细菌内毒素检测。结果:质量浓度为5.0 mg·ml^-1的样品溶液对凝集反应有抑制作用,质量浓度稀释至2.5 mg·ml^-1时,用灵敏度λ为0.25 EU·ml^-1的鲎试剂进行试验,干扰作用消失。结论:注射用盐酸丙帕他莫可用鲎试剂方法进行细菌内毒素检测。     

乳鼠心肌裂解液对S180小鼠移植瘤抑瘤作用的实验研究

目的探讨乳鼠心肌裂解液对S180小鼠移植瘤生长的影响。方法提取制备乳鼠心肌细胞裂解液（car-diac muscle cell lysate of neonaterat,CMCLnr）,建立S180小鼠移植瘤模型,以顺铂组为阳性对照组,生理盐水为阴性对照组,CMCLnr再分别分为30mg/kg、60mg/kg、90mg/kg三个不同的剂量组腹腔给药,然后观察不同实验组对S180小鼠移植瘤生长的影响。结果各组小鼠移植瘤接种成活率均为100%。CMCLnr各剂量组肿瘤出现时间均晚于阴性对照组（P〈0.05）,实验各组肿瘤瘤重均小于阴性对照组,肿瘤抑制率DDP、CMCLnr（30mg/kg、60mg/kg、90mg/kg）分别为81.23%、63.09%、65.44%、66.06%,与阴性对照组比较。差异有统计学意义（P〈0.001）,且无明显剂量依赖性;CMCLnr各组的小鼠体重增加均大于生理盐水组,而顺铂组明显抑制小鼠生长（P〈0.05）。结论乳鼠心肌裂解液对S180小鼠移植瘤生长具有一定的抑制作用,且对小鼠无不良反应。     

Peptidoglycan activation of the proPO-system without a peptidoglycan receptor protein (PGRP)?

Recognition of microbial polysaccharide by pattern recognition receptors triggers the prophenoloxidase (proPO) cascade, resulting in melanin synthesis and its deposition on the surface of invading pathogens. Several masquerade-like proteins and serine proteinase homologues have been shown to be involved in the proPO activation in insects. In this study, a novel serine proteinase homologue, Pl-SPH2, was found and isolated as a 30 kDa protein from hemocytes of the freshwater crayfish, Pacifastacus leniusculus, by its binding property to a partially lysozyme digested or TCA-treated insoluble Lysine (Lys)-type peptidoglycan (PGN) and soluble polymeric Lys-type PGN. Two other proteins, the Pl-SPH1 and lipopolysaccharide- and β-1,3-glucan-binding protein (LGBP) were also found in the several different PGN-binding assays. However no PGRP homologue was detected. Neither was any putative PGRP found after searching available crustacean sequence databases. If RNA interference of Pl-SPH2, Pl-SPH1 or LGBP in the crayfish hematopoietic tissue cell culture was performed, it resulted in lower PO activity following activation of the proPO-system by soluble Lys-type PGN. Taken together, we report for the first time that Lys-type PGN is a trigger of proPO-system activation in a crustacean and that two Pl-SPHs are involved in this activation possibly by forming a complex with LGBP and without a PGRP.     

尼扎替丁氯化钠注射液的细菌内毒素检查

目的建立尼扎替丁氯化钠注射液细菌内毒素的检查方法。方法用不同厂家、不同批号、不同灵敏度的鲎试剂对尼扎替丁氯化钠注射液进行干扰试验。结果用标示灵敏度为0．25EU／mL的鲎试剂,将尼扎替丁氯化钠注射液稀释2倍后对细菌内毒素检查无干扰作用。结论可以用细菌内毒素检查法取代尼扎替丁氯化钠注射液的热原检查。     

阿扎司琼注射液的细菌内毒素检查法的探讨

目的 探讨阿扎司琼注射液的细菌内毒素检查法的可行性.方法 根据<中国药典>2005年版二部细菌内毒素检查方法及指导原则进行试验.将阿扎司琼注射液600倍稀释(即浓度为0.008 333 g·L-1),用标示灵敏度为0.25 EU·ml-1的鲎试剂检测其细菌内毒素.结果 阿扎司琼注射液600倍稀释液对鲎试剂的细菌内毒素检...     

马来酸氯苯那敏注射液的细菌内毒素检查

目的:建立马来酸氯苯那敏注射液的细菌内毒素检查方法。方法:按照《中国药典》中的细菌内毒素检查法,用不同厂家不同灵敏度的鲎试剂对14个厂家生产的28批马来酸氯苯那敏注射液进行干扰试验和细菌内毒素检查。结果:样品浓度稀释到0.025mg·mL-1以下对所用细菌内毒素检查法无干扰作用,细菌内毒素的限值L为5EU·mg-1;按拟定标准,所有28批样品细菌内毒素检查均符合规定。结论:所建立的鲎试剂法可用于马来酸氯苯那敏注射液的细菌内毒素检查。     

枯痔注射液细菌内毒素检查法的建立

目的:建立枯痔注射液细菌内毒素检查法。方法:采用供试品稀释法排除枯痔注射液对细菌内毒素鲎试剂检查法的干扰。结果:枯痔注射液稀释至16倍时对细菌内毒素的检测无干扰作用。结论:所建方法可用于检查枯痔注射液中的细菌内毒素。     

细菌溶解产物治疗儿童反复呼吸道感染的疗效及对免疫功能影响的考察

目的研究细菌溶解产物对反复呼吸道感染儿童体液免疫的影响及临床疗效观察。方法收集2006年1月至2008年12月住院治疗的反复呼吸道感染儿童200名,随机分成2组,实验组加用细菌溶解产物治疗,对治疗前后3个月的体液免疫水平及6个月临床疗效进行统计学分析。结果与对照组相比,实验组患儿体液免疫中IgG、IgA水平明显高于治疗前,具有统计学意义（P〈0.05）,2组患儿治疗前后IgM水平比较无统计学意义（P〉0.05）,实验组治疗总有效率（96%）高于对照组的有效率（79%）（P〈0.01）。结论免疫功能低下是反复呼吸道感染患儿的重要病因之一,细菌溶解产物对患儿具有免疫调节作用,能够明显减少反复呼吸道感染次数,值得临床推广应用。     

Platelet lysate favours in vitro expansion of human bone marrow stromal cells for bone and cartilage engineering

The heterogeneous population of non-haematopoietic cells residing in the bone marrow (bone marrow stromal cells, BMSCs) and the different fractions and components obtained from platelet-rich plasma provide an invaluable source of autologous cells and growth factors for bone and other connective tissue reconstruction. In this study, we investigated the effect of an allogenic platelet lysate on human BMSCs proliferation and differentiation. Cell proliferation and number of performed cell doublings were enhanced in cultures supplemented with the platelet-derived growth factors (platelet lysate, PL), either with or without the concomitant addition of fetal bovine serum (FBS), compared to cultures performed in the presence of FBS and FGF2. Both in vitro and in vivo osteogenic differentiation were unaltered in cells maintained in medium supplemented with PL and not FBS (Only PL) and in cells maintained in medium containing FBS and FGF2. Interestingly, the in vitro cartilage formation was more effective in the pellet of BMSCs expanded in the Only PL medium. In particular, a chondrogenic differentiation was observed in pellets of some in vitro-expanded BMSCs in the Only PL medium, whereas pellets from parallel cell cultures in medium containing FBS did not respond to the chondrogenic induction. We conclude that the platelet lysate from human source is an effective and even more beneficial substitute for fetal bovine serum to support the in vitro expansion of human BMSCs for subsequent tissue-engineering applications.