准分子激光原位角膜磨镶术患者视网膜微循环血流的研究

目的 本研究主要观察LASIK中负压吸引对视网膜微循环血流的影响。方法 采用海德堡视网膜血流仪分别对实施LASIK手术的低度，中度和高度的近视患者共38例62眼进行检测，测量视盘大血管，视盘颞侧盘沿，视盘鼻侧盘沿，颞侧视盘旁视网膜，鼻侧视盘旁视网膜和巩膜筛板的血流，并对其手术前后的血流量，血流速和红细胞移植速率进行统计分析。结果 LASIK手术前后，视盘大血管，视盘颞侧盘沿，视盘鼻侧盘沿，颞侧视盘旁视网膜，鼻侧视盘旁视网膜和筛板的血流量，血流速和红细胞移动速率均无显著性差异。结论 LASIK中负压吸引对视网膜微循环血流无临床病理性影响。     

Penile metastasis of prostatic adenocarcinoma

Prostatic carcinoma metastasizing to the penis is rare. A case of adenocarcinoma of the prostate with metastases to the penile shaft and glans penis is presented.     

An alternative method for restoring opposition after median nerve injury: an anatomical feasibility study for the use of neurotisation

Opposition, one of the most important functions of the hand, is lost or impaired after median nerve injury. Complete recovery does not always occur after treatment, and various techniques of opponensplasty are used for restoring opposition. This study was performed in order to develop an alternative method for selective restoration of thenar muscle function. Ten arms from 5 cadavers were used. The median nerve with its thenar motor branch (Tb) and the anterior interosseous nerve with its motor branch to pronator quadratus (PQb) were prepared in the distal forearm. The mean widths and the number of myelinated fibres of these nerves were: PQb 1.3±0.10 mm, Tb 1.4±0.12 mm and PQb 912±88 mm, Tb 1020±93 mm. The minimum necessary distance from the distal flexor crease of the wrist for neurotisation of the Tb by the PQb was 60±5.41 mm. It was concluded that PQb‐Tb neurotisation would be possible anatomically. The advantages are that motor function is reestablished with a motor nerve, the diameters and the number of myelinated fibres of both nerves are similar, the loss of function after denervation of the pronator quadratus is slight and opponensplasty still remains as a final option.     

髓母细胞瘤的临床病理,免疫组化及电镜观察

报道３０例儿童髓母细胞瘤，其中小脑蚓部２５例，小脑半球５例。组织类型：经典型１９便，促纤维增生型１０例，肌细胞型１型。免疫组化标记Ｓ－１００，ＮＳＥ，ＮＦ，ＧＦＡＰ阳性率分别为９０％，８５％，８５％，６０％，显示有向神经元和／或胶质细胞双向分化的能力。３例电镜结果眯支持髓母细胞瘤是具有双向分化潜能的原始神经外胚层来源的肿瘤。     

Cloning and identification of an angiostatic molecule IP-10/crg-2

SubjectheadingsIFN-a;IFN--y;inducibleprotein;cytokineresponsivegene-2;DNAINTRODUCTIONAngiogenesisplaysanimportantroleintumorigenesisandmetastasis,andgenetherapytargetingvasculatureofneoplasmshasbecomeahottopic"'.Manynewmolecules,includingendostatinandangiostatin,werediscoveredwithsignificantinhibitoryeffectonneovascularizationoftumor.Besidesthesemolecules,some'old'cytokineswerealsofoundtopossessthebioactivityofinhibiting...angiogenesis,includinglP-10/Crg--2['].HumanlP10belongstoasupe…     

Evaluation of the role of varicocelectomy including external spermatic vein ligation in patients with scrotal pain

OBJECTIVES: The aim of the present study was to assess and compare pre- and postoperative scrotal pain in patients with varicocele who underwent varicocelectomy with different approaches. METHODS: The study included 144 consecutive patients with left-sided varicocele who had left scrotal pain for more than 3 months. All patients underwent varicocele ligation using either a subinguinal or inguinal approach with or without external spermatic vein ligation. We asked the patients to complete an 'Assessment Questionnaire for Scrotal Pain' both before and after the surgery. RESULTS: The surgery was successful in 101 (83.4%) of the 121 patients available for follow up. Seventy-four (61.1%) patients reported the complete resolution of pain while 27 patients (22.3%) reported partial resolution. Symptoms worsened in a single case and pain persisted postoperatively in 19 cases (15.7%). There were no statistically significant differences in the characteristics of the pain and grade of varicocele between postoperative groups. A significant difference was observed in postoperative success between patients who had external spermatic vein ligation and those who did not, regardless of the surgical approach (inguinal or subinguinal). All patients who reported complete or partial resolution of pain stated that they would recommend surgery to relatives with the same problem. CONCLUSIONS: Varicocelectomy using either inguinal or subinguinal approaches is an effective and reasonable treatment option in this patient group and should include external spermatic vein ligation for a satisfactory outcome.     

Fura-2/AM法测定大鼠脑缺血后细胞内游离钙浓度

目的 :观察大鼠全脑缺血后 3d时的脑细胞内游离钙离子浓度 ([Ca2 + ]i)水平 ,介绍用Fura - 2 /AM法测定 [Ca2 + ]i的具体测定方法 ,探讨脑缺血后脑细胞内游离钙浓度变化的可能机制 .方法 :2 0只Wistar大鼠随机分成对照组和实验组 ,采用流行的传统四血管阻断法加以修改改良制作大鼠脑缺血动物模型 ,取假手术动物作对照组 ,用新型Ca2 + 荧光指示剂Fura - 2测定全脑缺血后 3d时的脑细胞内游离钙浓度 .结果 :对照组 [Ca2 + ]i为 (2 6 2 83± 90 12 )nmol/L ,实验组 [Ca2 + ]i为 (371 39± 89 0 0 )nmol/L ;用t -检验进行统计学分析 ,P =0 0 143<0 0 5 ,两者差异具有显著性 .结论 :大鼠全脑缺血后 3d时的脑细胞内游离钙离子浓度 ([Ca2 + ]i)水平明显增高     

补肾填精复方对WI38细胞周期及相关基因表达的影响

目的:观察补肾填精中药复方对衰老细胞周期及相关基因表达的影响.方法:选用衰老细胞模型WI38常规培养至33代,加入补肾填精复方含药血清作用至40代,并以流式细胞仪、RT-PCR、wester-blot等方法检测补肾填精含药血清对衰老细胞周期及相关基因表达影响.结果:33代后传代细胞出现明显衰老特征;衰老细胞阻滞于G1期;补肾填精含药血清可以延缓WI38细胞衰老,促进细胞进入细胞周期;补肾填精含药血清可降低细胞衰老相关基因P53、P21、P16转录与表达水平.结论:补肾填精中药复方可以影响细胞周期,减缓细胞衰老,其作用的环节可能与降低细胞衰老相关基因P53、P21、P16表达水平相关.     

补体因子Ⅰ缺乏患儿1例分子与临床特征研究

目的探讨1例补体因子Ⅰ(complement factorⅠ,CFⅠ)缺乏患儿CFⅠ基因突变、蛋白表达水平、免疫表型及临床特征。方法对1例临床表现为反复头痛伴发热,脑电图及脑脊液检查异常的疑似无菌性脑膜脑炎患儿行免疫学筛查,免疫相关基因新一代测序及ELISA检测CFⅠ蛋白表达。结果该患儿补体C3水平明显降低,抗体水平及外周血精细免疫分型正常,经基因分析发现CFⅠ基因第5号内含子拼接位点发生纯合772+1G>T突变,患儿父母均为该突变的携带者。ELISA检测示患儿CFⅠ蛋白表达量与正常对照相比明显降低。结论通过临床、免疫学筛查、基因分析及蛋白检测,确诊1例发生CFⅠ基因突变的补体缺乏患儿,为此前未见报道的新发突变。对反复发热伴头痛,脑膜脑炎诊断不明确及C3降低的患儿应考虑补体缺乏并进行补体相关基因分析以最终确诊。     

ADVIA 120型血液分析仪异常报警参数及其可靠性分析

目的 了解ADVIA120型全自动血液分析仪对细胞形态异常提示功能的可靠性。方法 将160例仪器提示异常参数的标本和112例无异常提示的标本作血涂片，经瑞特-姬姆萨染色镜检后比较结果。结果 真阳性率：未成熟粒细胞（IG）、血红蛋白浓度不等（HC-VAR）、小红细胞（MICRO）、核左移（LS）、大红细胞（MAC—RO）、低色素性红细胞（HYPO）、大血小板（LPLT）、原幼细胞（BLASTS）、红细胞大小不等（ANISO）为86．7％～100．0％，高色素性红细胞（HYPER）为69．2％，有核红细胞（NRBC）、变异淋巴细胞（ATYP）、血小板凝集（PLT-CLM）为13．3％～32．3％；以上所有参数真阴性率为82．8％～100．0％（平均95．0％）。结论 仪器对报警参数的真阴性率高而有较强的筛检能力。仪器对NRBC、ATYP、PLTCLM的异常报警提示准确性不理想，而对其他参数的异常报警提示有较高的可信性。因此，对于结果有异常提示的标本应当配合手工镜检确诊。