正常人尿中单羟酚类物质含量的测定研究

目的：确定正常人尿中单羟酚衍生物（ＭＨＰ）含量范围。方法：采用可见分光光度法,定量测定１８～６０岁各类正常人及ＨＢｓＡｇ阳性携带尿液中单羟酚类物质。结果：ＭＨＰ含量与年龄、性别有一定的,１９９４例健康人尿中ＭＨＰ含量为正态分布,第９５百分位数的ＯＤ值上限为０．３,对应酷氨酸含量是２．４６ｍｍｏｌ／Ｌ,而ＨＢｓＡｇ阳性携带者尿液ＭＨＰ与正常人无显著性差异。结论：此实验结果在运用ＭＨＰ进行肿瘤筛查时,     

支气管肺炎患儿血清IL-6水平变化及临床意义

采用放免法检测了42例支气管肺炎和25例对照组小儿血清白细胞介素-6(IL-6)水平,结果显示肺炎患儿血清IL-6水平较对照组显著升高(P<0.01);重症肺炎与轻症肺炎患儿血清IL-6水平相比较有显著差异(P<0.001),病情越重,其水平也越高;IL-6水平与末梢血白细胞总数升高程度有一定相关,呈正比例关系。提示IL-6是反映肺炎感染严重程度的良好指标。     

Interior Reconstruction from Truncated Projection Data in Cone-beam Computed Tomography

Journal of Digital Imaging - The interior reconstruction of completely truncated projection data is a frontier research hotspot in cone-beam computed tomography (CBCT) application. It is difficult...     

A Novel Deep Learning Model Based on Multi-Scale and Multi-View for Detection of Pulmonary Nodules

Journal of Digital Imaging - Lung cancer manifests as pulmonary nodules in the early stage. Thus, the early and accurate detection of these nodules is crucial for improving the survival rate of...     

Scanning laser ophthalmoscope imaging of fluorescein-labelled blood cells

Purpose: To demonstrate the feasibility of a technique for the visualization by scanning laser ophthalmoscope (SLO) of fluores cein-labelled autologous leukocytes and platelets in retinal vessels. Method: Individual blood samples from rats and rabbits were centrifuged to isolate platelets and leukocytes, then passively labelled with fluorescein and reinjected into the same animal. An SLO was used to visualize and record cell displacement in the retinal circulation. Labelled platelets were analysed by flow cytometry. Results: By SLO, platelets appeared as a heterogeneous particle flow, and individual leukocytes appearing as brighter spots could easily be traced. Flow cytometry showed that after labelling platelets were well individualized and their size was slightly increased. Conclusion: Circulating blood cells can be visualized in retinal vessels by a simple method consisting of passive labelling of autologous platelets and leukocytes by fluorescein. No platelet toxicity was detected. This method could be applied to the study of blood cell movement in human retinal vascular diseases.Proprietary interest category: N     

长效避孕栓剂对家兔的抗生育作用

目的和方法:是观察NP-9长效避孕栓(100mg/栓)于家兔阴道给药后15分钟和3.5小时的抗生育作用和连续7天给药的阴道刺激试验。结果:长效避孕栓无论在给药15分钟还是3.5小时交配避孕率均为100％。而生理盐水和赋型剂对照组避孕率分别为0％和40％。家兔阴道刺激试验结果表明:该栓剂阴道刺激炎症总分值为6.9,在可接受范围内。     

Mutation of P_(53) tumor suppressor gene in colorectal cancer and its relationship with histologic grade and Dukes'''' stage

目的：探讨大肠癌组织类型、临床分期与P53基因突变的相关关系。方法：采用PCR—SSCP方法对30例大肠癌P53基因突变状况进行了检测。结果：发现6例（20％）P53基因突变,其中,1例在第4外显子,5例在第5外显子,第2,3外显子未检出突变。在不同组织分化程度中,P53基因突变率分别为高分化腺癌和中分化腺癌均为1／8（12．5％）,低分化腺癌为3/10（30．0％）,未分化腺癌为1／4（25．0％）。在临床分期中,Dukes’B期为1／10（10．0％）,C期为2／12（16．7％）,D组为3／8（37．5％）。结论：P53基因突变与Dukes’分期有关,并且P53基因突变很少发生第2,3外显子。     

胸段硬膜外麻醉对神经肽Y的影响

为探讨胸段硬膜外麻醉对患者血浆ＮＰＹ的影响,本文采用放射免疫分析法测定了３１ 例择期上腹部手术病人胸段硬膜外麻醉前后血浆ＮＰＹ的含量。结果显示：麻醉后平均动脉压较麻醉前显著下降（ Ｐ＜０－０１） ,血浆ＮＰＹ则无显著变化（ Ｐ＞ ０－０５）。提示患者处于硬膜外麻醉状态下体内ＮＰＹ 含量的变化与交感神经系统调节具有一定的关系。     

硬脊膜的蠕变率与椎间盘突出症的自然病程

目的　为探讨椎间盘突出症缓慢自愈的机理和治疗方法的选择提供一定的帮助。方法　应用２１ 例新鲜的猪的腰段硬脊膜,分组测量其蠕变率的变化。结果　各组蠕变率均与时间和载荷成正比,控温组发生速度快而大,模拟组发生慢而小。结论　蠕变率是椎间盘突出症症状缓解的力学基础,促进蠕变率发生的治疗,同减压治疗一样,都是病因治疗。     

Antegrade locked nailing for humeral shaft fractures

Treatment results of antegrade locked nailing of acute humeral shaft fractures, including union rate and recovery of shoulder function, have been inconsistent. This led the current authors to hypothesize that implant design and surgical techniques might account for this inconsistency. In the current study, 47 fractures (38 acute; nine pathologic) in 47 patients achieved union with the techniques of closed nailing, short to long segment nailing, and fracture compression. Satisfactory recovery of shoulder function occurred because of minimal surgical trauma, prevention of impingement by the nail or locking screws, and prevention of axillary nerve injury or comminution of the humeral head. Forty-seven patients with 38 acute fractures and nine pathologic fractures were treated with humeral locked nails. Mean followup time was 21.4 months. With a single operation, all 38 acute fractures proceeded to eventual union; the average time to union was 7.8 weeks. Thirty-five patients had excellent or satisfactory recovery of shoulder function. Complications included slipout of the proximal screw, nail breakage, fragment displacement, and transient postoperative radial nerve palsy. All nine patients with pathologic fractures had substantial pain relief and increased arm function after surgery. The current study shows the reliability of antegrade locked nailing for proximal and middle third fractures of the humeral shaft.