Link protein shows species variation in its susceptibility to proteolysis.

Human cartilage link protein exists as three native components, while equine, bovine, and porcine cartilage link protein exist as two and Swarm rat chondrosarcoma link protein exists as only one component. These nonhuman link protein components represent intact protein structures, and there is little evidence for proteolytically modified forms in nonhuman tissues. In human cartilage, the proteolytic production of modified link proteins increases with age, whereas high amounts of such products were not seen in the nonhuman tissues. However, the small amounts of link protein fragments that were observed in the nonhuman cartilages were of a similar size to their human counterparts. On digestion of human proteoglycan aggregate with stromelysin, rapid modification of the link protein components occurred, whereas the aggregates from nonhuman cartilages showed incomplete cleavage of their link protein components. The relative resistance of nonhuman link protein to stromelysin may in part be due to a unique amino acid substitution present near the enzymic cleave site.     

血清Ⅳ型胶原对肝纤维化诊断价值的研究

对３２例肝硬化（ＬＣ），２３例慢性活动性肝炎（ＣＡＨ），２１例慢性迁延性肝炎（ＣＰＨ），１６例非肝病（ＮＨＤ）和３０例正常对照者采用一步夹心酶免疫法测定了血清Ⅳ型胶原（Ⅳ－Ｃ）水平。结果表明，慢性肝病组血清Ⅳ－Ｃ水平显著高于正常对照组（Ｐ＜０．０２），ＬＣ及ＣＡＨ患者血清Ⅳ－Ｃ水平显著高于ＣＰＨ患者，以活动性肝硬化患者最高。在轻度肝纤维化时Ⅳ－Ｃ阳性率明显高于血清Ⅲ型前胶原及单胺氧化酶。血清Ⅳ－Ｃ含量与肝纤维化、肝内炎症、坏死程度及肝窦壁Ⅳ－Ｃ免疫组化染色反应强度显著相关。提示血清Ⅳ－Ｃ不仅是诊断早期肝纤维化的重要指标，而且能反映肝窦毛细血管化程度。     

表面角膜镜片术治疗儿童外伤性白内障术后无晶体眼

本文报告了１０例儿童外伤性白内障术后无晶体眼，不适宜作人工晶体植入而接受了表面角膜镜片术。术后角膜屈光力平均增加９．２５Ｄ，裸眼视力均达０．２以上，矫正视力在０．４￣０．８之间，并恢复了双眼单视功能且矫正了弱视。经１￣３年追踪观察，表面角膜镜片保持透明，视力稳定且未出现并发症。结果表明该手术是一项近年来逐渐发展起来的操作简便、安全可靠、疗效确切的屈光性角膜手术。     

茶碱和双丁酰-cAMP对巨噬细胞水解酶影响的细胞化学观察

本文通过细胞体外培养,细胞化学定量分析等方法,观察了茶碱和双丁酰-cAMP对C_(57)BL/6J小鼠腹腔巨噬细胞酸性磷酸酶、α-醋酸萘酚酯酶的作用和影响.卡介苗活化的巨噬细胞与固有巨噬细胞相比,其酸性磷酸酶、α-醋酸萘酚酯酶活性明显升高.卡介苗活化的巨噬细胞在茶碱或双丁酰-cAMP作用下。酸性磷酸酶、α-醋酸萘酚酯酶活性明显受到抑制.茶碱或双丁酰-cAMP对固有巨噬细胞的酸性磷酸酶、α-醋酸萘酚酯酶无抑制作用.     

Effect of Cycloheximide on the Adaptive Response Induced by Low Dose Radiation

Human lymphocytes pre-exposed to 10 mGy or 50mGy of X-rays become less sensitive to subsequent large dose irradiation,exhibited lower rate of chromosome aberration than expected.This adaptive response could be inhibited by cycloheximide,a protein synthesis inhibitor for successive 2h period ranging from 0.5h before to 4h after the low dose exposure,indicating that the adaptive response was directly related with the protein synthesis.     

红毛五加多糖对机体免疫功能的影响

本文研究红毛五加多糖成分对机体免疫功能的影响,实验结果表明红毛五加多糖可激发T、B-淋巴细胞的生物学效益。     

颈外动脉主要分支的测量与观察

本文对60侧成人半头颈标本的颈外动脉主要分支进行了测量与观察。为了颞浅动脉插管(造影或化疗)及血管吻合术的需要,进一步测量了颞浅动脉与颈外动脉、颞骨颧突部的两个角度以及颞浅动脉内壁的周长,并推算出其内径。旨在为临床应用及国人体质调查提供参考资料。     

新城疫病毒W系疫苗抗小鼠移植瘤作用的实验研究

用新城疫病毒Ⅳ系疫苗免疫治疗小鼠腹水型肝癌移植瘤，结果：治疗组平均瘤重明显小于对照组（Ｐ＜０．０５）；治疗组淋巴细胞应答水平显著高于对照组（Ｐ＜０．０５）。表明新城疫病毒Ⅳ系疫苗具有抗移值瘤作用。