Bone-particle-impregnated bone cement: an in vivo weight-bearing study

To evaluate an experimental inorganic-bone-particle-impregnated bone cement, canine hip prostheses were implanted in dogs using a regular bone cement on one side and the experimental bone cement on the other. In a preliminary feasibility study, bone ingrowth into the resorbed bone-particle spaces was established 3 months after implantation in three dogs. In a more detailed study, twenty-eight (28) dogs were divided in four groups to delineate the effects of time on the phenomena of bony ingrowth. One month after implantation, active bone ingrowth into the bone cement was obvious. By 3 months postimplantation, the ingrowth appeared to have traversed the thickness of the bone-particle-impregnated cement. By the fifth month, most of the interconnected inorganic bone particles were replaced by new bone. At the end of a year, the ingrown bone was mature and negligible new bone activity was present. Biomechanical pushout tests closely corroborated the histologic observations. The maximum shear strength of the cement/bone interface of the experimental side reached 3.6 times that of the control side at 5 months postimplantation. No further improvements were seen at 12 months postimplantation. A viable bone/cement interface may result in a better orthopedic implant fixation system by combining the advantages of both cement for immediate rigidity and biological ingrowth for longterm stability.     

The lack of effect of histamine on spontaneous activity in the isolated human myometrium

The effects of histamine on the spontaneous activity of the isolated human myometrium were studied. Both the frequency and force of contractions of the muscle strips were not significantly altered by histamine. The presence of either a histamine H₁-or H₂-receptor antagonist in the organ bath did not significantly change the responses of the uterine muscle to histamine. These findings suggest that histamine has negligible effects on the human myometrium, possibly due to the absence, or paucity, of histamine receptors.     

Ⅱ期高血压病高胰岛素血症对血液粘度及血脂的影响

以２１例Ⅱ期高血压患者、２１例Ⅱ期高血压病高胰岛素血症患者及２０例正常人为研究对象，以全血比粘度、全血还原比粘度、血浆比粘度、红细胞压积及血浆甘油三酯、总胆固醇、高密度脂蛋白为指标；结果表明Ⅱ期高血压病患者全血比粘度、全血还原比粘度较正常人高，Ⅱ期高血压病高胰岛素血症患者亦较单纯高血压病患者进一步增高，同时其血浆甘油三酯较单纯高血压病患者增高，高密度脂蛋白降低．而血浆比粘度、红细胞压积、总胆固醇三组间无显著性差异。单纯高血压病患者与正常人组比较血脂无差异。因而认为高血压病患者的高胰岛素血症可使高血压病患者增高的血粘度进一步增高，且血粘度的增高主要是红细胞机能、代谢的改变所致。单纯高血压病患者血脂改变不明显，高血压病患者血脂的改变主要是由高胰岛素血症所致。     

一种自动优选标准型股骨柄的方法

髋关节置换手术中采用标准型假体时,术前只能大致选取假体,术中还要预备多个假体,往往手术时间增长。为了解决这一问题,本文提出一种利用计算机优选标准型髋关节假体的方法。从X线片中获取患者股骨解剖数据。利用这些解剖数据和股骨近端截面平均数据库三维重建患者股骨近端,重建出的股骨近端模型使优选标准假体成为可能。理论分析表明,该方法切实可行。     

Association of genetic polymorphism in plasminogen activator inhibitor-1 gene with endometrial hypoplasia in infertile women

OBJECTIVE: To investigate the relationship between the plasminogen activator inhibitor (PAI-1) polymorphisms and endometrial hypoplasia in infertile women. METHODS: The study was conducted in 105 primary infertile patients with endometrial hypoplasia diagnosed by pathology and the thickness of endometrium by B-mode ultrasound and 85 controls who were not pregnant and had normal fertility. The -675 4G/5G polymorphism in the PAI-1 gene was detected by polymerase chain reaction-restriction fragment length polymerphim analysis. RESULTS: The frequencies of 4G/4G genotype and 4G allele of the PAI-1 gene were higher in the patient group (48.6% and 66.2%) than in the normal controls (22.4% and 47.1%) (P < 0.01). ThePAI-1 4G/4G genotype was significantly associated with endometrial hypoplasia in the infertile patients (OR=4.9, 95% CI: 2.10-10.12). CONCLUSION: The present findings suggest that the 4G/5G polymorphism of the PAI-1 gene was associated with endometrial hypoplasia in infertile patients.     

丹参和黄芪治疗气虚血瘀型心力衰竭的作用

本文报道91例气虚血瘀型心力衰竭(心衰)病人选用丹参和黄芪治疗作用。16例作气囊漂浮导管监测,发现黄芪明显增加心排出量、每搏量及心脏指数,而丹参无此作用,提示黄芪有正性肌力作用;30例给黄芪加党参,治疗后心功能分级及某些异常的血液流变学指标均有改善;44例先丹参,继之丹参加黄芪,治疗后心功能分级有明显改善,且能改善异常的血液流变学指标,明显抑制血小板聚集功能。提示丹参具有活血化瘀改善血液流变学及抑制血小板的聚集性,黄芪有补气强心改善心功能的作用。     

Persistent effect of a low dose of preadministered diethylnitrosamine on the induction of enzyme-altered foci in rat liver

The effect of a low dose of preadministered diethylnitrosamine(DEN) on the induction of enzyme-altered foci in the liversof male full-grown Fischer 344 rats was studied. As a pretreatment,DEN at a dose of 10 mg/kg body wt was injected i.p. At varioustimes after DEN pretreatment a complete initiation, consistingof administration of the same dose of DEN by the same routein rats subjected to partial hepatectomy (PH), was performed,followed by application of selection pressure. Enzyme-alteredfoci stained with -glutamyltrans-peptidase (-GTP) and glutathioneS-transferase placental form (GST-P) were then assayed. Decreasesin the numbers and areas of foci in the rats which receivedsaline + PH 14 or 28 days after DEN pretreatment were observedin comparison with rats which received saline + PH immediatelyafter DEN. On the other hand, the numbers and areas of fociwere not decreased in rats which received the complete initiation,consisting of DEN + PH, at various times after DEN pretreatmentwhen compared with rats which received these at the same timeas the DEN pretreatment. This persistent effect of DEN pretreatmenton the complete initiation lasted up to 182 days after the timeof DEN pretreatment. In this experiment, GST-P was found tobe a more sensitive marker for the detection of putative preneoplasticliver-cell foci than -GTP.     

新政府会计制度下公立医院会计核算的难点及对策

2019年1月1日公立医院正式开始实施新政府会计制度,通过研究公立医院在新制度下会计核算的衔接问题以及适应问题,找出公立医院会计核算将面临的难点,如固定资产及其累计折旧核算方式、应付职工薪酬、科教项目核算等,并给出相应的解决对策,如利用信息化手段对应付职工薪酬进行资金分配、利用成本配比处理医院科教项目核算难点等,帮助公立医院能够在改革中进步,提升公立医院会计核算管理水平。     

止消通脉宁对糖尿病微血管合并症患者心功能影响的临床研究

为了探讨中药复方止消通脉宁对有微血管合并症的亚临床期糖尿病心脏病患者心功能的影响 ,我们选择了 63例 2型有微血管合并症的糖尿病患者 ,分为对照组 (2 0例 )和治疗组 (4 3例 ) ,分别使用常规疗法和加用止消通脉宁的治疗方法 ,疗程 4周 ,着重观察心功能、眼底和 2 4h尿白蛋白定量的改变。结果 :止消通脉宁可以明显改善心功能、减少尿白蛋白定量 ,而常规治疗对照组则无明显作用。表明止消通脉宁干预治疗可以改善有微血管合并症的亚临床期糖尿病心脏病患者心功能的异常 ,从而预防和治疗糖尿病心脏病。