颅内动脉瘤的血管内栓塞治疗

目的探讨应用电解可脱性弹簧圈(GDC)栓塞治疗颅内动脉瘤的临床效果。方法2002年6月-2004年6月我们采用GDC栓塞颅内动脉瘤126例(其中4例有2个动脉瘤,共130个)。前交通动脉瘤42个,后交通动脉瘤53个,颈内动脉瘤6个,大脑中动脉瘤10个,大脑后动脉瘤8个,大脑前动脉瘤6个,小脑后下动脉瘤2个;基底动脉瘤3个。按Hunt-Hess分级:Ⅰ级38例,Ⅱ级54例,Ⅲ级23例,Ⅳ级11例。必要时辅以篮筐技术、重塑技术、支架技术、双微导管或连环技术、蚕食技术。结果成功栓塞126例动脉瘤,其中103例为100%栓塞,21例为95%,2例为90%。12例在栓塞后6~18个月进行造影随访,所栓塞动脉瘤均未见复发征象。结论GDC栓塞颅内动脉瘤是安全、有效和微创的治疗手段。联合运用多种栓塞技术有助于减少术后并发症,提高治愈率。     

下肢动脉硬化性闭塞症介入治疗围手术期并发症分析

目的 总结下肢动脉硬化性闭塞症介入治疗围手术期相关并发症的防治经验.方法 对207例下肢动脉硬化件闭塞症行介入治疗,统计围手术期各种并发症的发生情况,分析并发症的发生率与泛大西洋介入协会(transAtlantic inter-society consensus,TASC)分型分级之间的关系以及糖尿病和冠心病对重要脏器并发症发生率的影响.结果 本组207例,介入手术成功190例.17例失败,其中13例为介入操作失败、4例死于术后重要脏器并发症.围手术期并发症包括穿刺点出血12例、假性动脉瘤4例、消化道出血2例、动脉破裂6例、脑梗塞8例、急性心衰9例、呼衰13例、肾衰6例、支架内血栓形成5例和蓝趾综合征1例.在本组患者的TASC分型中,股腘动脉病变介入治疗并发症的发生率为39.84%(51/128),高于主髂型的18.99%(15/79)(P<0.05);患有糖尿病以及合并糖尿病和冠心病患者重要脏器并发症的发生率分别为27.66%(13/47)和24.49%(12/49),高于无合并症患者的5%(2/40)(P<0.05).结论 下肢动脉硬化性闭塞症介入治疗围手术期并发症发生率较高可能与术中操作不当、病变类型复杂及合并糖尿病和冠心病有关,术前注意合并症的处理及术中选择合理治疗方式、缩短手术时间等可减少并发症的发生.     

大学生龋病发病情况调查结果分析

目的了解高校大学生龋病的发病情况,为进一步搞好龋病的预防保健工作提供依据。方法通过整群随机抽样的方法选择在校大学生850名作为调查对象,进行现况调查,主要通过问诊、视诊、探诊等方法做检查,并做统计学分析。结果受检者850人中,患龋者430人,患龋率50.59%,其中女生患龋率63.64%,男生患龋率42.31%,男女生比较差异有统计学意义(p<0.01)。结论高校大学生患龋率较高,女生患龋率明显高于男生。应及时采取预防保健措施,以预防和减少龋病的发生。     

刺五加水提物对人精子体外运动活力的影响

目的研究刺五加水提物对正常男性精子体外运动活力的影响，探讨其可能的作用机制。方法将20例正常男性的精子通过上游优化法处理后，一组精子加入10 mg·mL^-1的刺五加水提物，另一组加入等量的Ham’s F10培养液作对照。应用计算机辅助的精子分析系统，分别测定孵育0.5，1，2，3，4，5 h后人精子各运动参数。结果随着时间的延长，加入Ham’s F10培养液的精子活动能力有不同程度的下降；加入10 mg·mL^-1的刺五加水提物后，不同时段精子的运动能力均较对照组明显提高，精子存活率、前向运动精子百分率、曲线运动速度、直线运动速度和平均路径速度与对照组比较，均明显改善(均P＜0.05)。 结论刺五加水提物能明显提高正常男性精子的体外存活率和运动能力。     

数字减影血管造影与介入治疗在胃肠道动脉性出血中的应用价值

目的 探讨数字减影血管造影(DSA)诊断与介入治疗在胃肠道动脉性出血中的应用价值.方法 回顾性总结78例消化道动脉性出血患者的DSA表现和动脉栓塞、药物灌注的治疗经验.结果 本组患者十二指肠溃疡15例,胃溃疡5例,胃癌2例,Dieulafoy病1例,血管畸形和发育不良9例,胃肠术后吻合口出血8例,肝胆疾患术后肝动脉破裂出血10例,Crohn病5例、肠道憩室出血6例、小肠炎或溃疡6例,小肠息肉3例,小肠中度恶性间质瘤1例,小肠高分化平滑肌肉瘤2例,直结肠癌5例.74%(58/78)的患者DSA造影阳性,造影剂外溢直接征象者33%(26/78),术后吻合口出血直接征象者83%(15/18).介入治疗的病例中动脉药物灌注15例,技术成功率60%(9/15),临床成功率40%(6/15);栓塞36例,技术成功率86%(31/36),临床成功率72%(26/36);介人治疗后再出血率16%(8/51),其中1例栓塞后再呕血经胃镜治疗无效死亡.DSA造影和介入治疗后手术者27例,造影与术后病理诊断的符合率为78%(21/27).随访时间2个月至3年,未发生胃肠道缺血坏死等并发症.结论 DSA对消化道动脉性出血的定位、定性有着重要价值,选择性动脉栓塞及药物灌注止血安全有效,有助于择期手术和并发症处理.     

BMP-2 gene polymorphisms and osteoporosis: the Rotterdam Study.

After reported associations of variations in the BMP-2 gene with osteoporosis in small populations, we studied the association of the BMP-2 gene polymorphisms Ser37Ala and Arg190Ser with osteoporosis in 6353 men and women from the Rotterdam Study. We did not observe an association of these variants with BMD, bone loss, hip structural analysis parameters, and fracture risk. INTRODUCTION: Bone morphogenetic protein 2 (BMP-2) plays a role in osteoblast differentiation. BMP-2 gene variation has previously been associated with osteoporosis in various small populations, but current evidence remains inconclusive about the exact association with osteoporosis. Therefore, we studied the association of two polymorphisms located in the BMP-2 gene (Ser37Ala and Arg190Ser) and haplotypes defined by these polymorphisms with BMD, rates of bone loss, parameters of hip structural analysis (HSA), and fractures in the Rotterdam Study, a large prospective cohort study of diseases in the elderly. MATERIALS AND METHODS: Databases were searched for polymorphisms and haplotype blocks in the BMP-2 gene region. Allele frequencies for Ser37Ala and Arg190Ser were determined in 60 blacks and 110 Chinese from Coriell panels. Genotype data on Ser37Ala and Arg190Ser were available for 6353 individuals from the Rotterdam Study population. Haplotype alleles defined by Ser37Ala and Arg190Ser were inferred using PHASE software. Genotype and haplotype analyses for BMD (measured at the lumbar spine and femoral neck), bone loss per year (measured at the femoral neck), and HSA were performed using AN(C)OVA. Fractures were analyzed using a Cox proportional-hazards model and logistic regression. All outcomes were adjusted for age, height, and weight. RESULTS: Allele frequencies were 2.5% for Ala37 and 40.2% for Ser190, whereas haplotype allele frequencies were 57.28% (Ser37Arg190), 40.19% (Ser37Ser190), 2.50% (Ala37Arg190), and 0.02% (Ala37Ser190). For BMD, bone loss, HSA outcomes, and (incident) fractures, no differences could be seen between genotype and haplotype groups. Conclusions: In this large population-based cohort of Dutch whites, we conclude that the BMP-2 Ser37Ala and Arg190Ser polymorphisms or haplotypes thereof are not associated with parameters of osteoporosis.     

肾移植术后并发尿路上皮肿瘤的临床分析

目的 分析肾移植患者并发尿路上皮肿瘤的特点，探讨其诊治方法。方法 自1998～2003年肾移植患者1293例，术后发生尿路上皮恶性肿瘤21例（1．6％）。男4例，女17例。17例原发病为慢性问质性肾炎。发生尿路上皮肿瘤距肾移植6～62个月，平均26个月。其中膀胱癌6例，单侧肾盂或输尿管癌6例，单侧肾盂或输尿管、膀胱癌8例，双侧肾盂输尿管癌1例。10例上尿路肿瘤发生部位与移植肾同侧，4例发生于移植肾对侧。临床症状以无痛性肉服血尿和反复泌尿系感染为主。19例行手术治疗，术后所有患者免疫抑制剂用量减少1／3并辅以局部灌注化疗。结果 2例行姑息性治疗的晚期肿瘤患者分别于发现肿瘤5、8个月死亡。余19例现已随访2～5年。13例肿瘤复发，复发部位为膀胱或对侧原。肾、输尿管。所有患者在免疫抑制剂减量期间均未出现急性排斥。2例因切除移植肾恢复透析，17例肾功能正常。结论 慢性间质性。肾炎导致。肾功能衰竭的。肾移植患者和女性肾移植患者易发生移植后尿路上皮肿瘤；移植肾同侧上尿路较对侧好发肿瘤；对移植肾对侧为首发的上尿路发生肿瘤者可预防性行双侧上尿路根治性切除。     

晚期股骨头坏死的人工关节置换术

股骨头坏死(osteonecrosis of the femoral head,ONFH)又称股骨头缺血性坏死,是世界范围内难治性常见病。对该病自然病程的研究显示,未经有效治疗,约80%的股骨头坏死会在发病后1~4年进展到股骨头塌陷。股骨头一旦塌陷,则多数患髋会在2年左右进展至关节损坏、功能严重受损而不得不行人工关节置换的程度[1]。由于占ONFH多数的非创伤性坏死患者发病年龄较轻(美国为38.0岁,本中心为33.1岁),双髋甚至其他关节受累,因此对这类患者行人工关节置换术会有许多顾虑,同时也将出现许多问题。尽管各种保存患者股骨头的手术疗效在不断提高,但仍有相当…     

肾综合征出血热发病机制研究进展

肾综合征出血热发病机制至今仍未完全阐明,病毒、病毒受体、细胞因子、自由基、特异性CTL反应、HLA差异性均可能与发病有关.此文对近年来的研究进展进行了综述.     

Recombinant AAV-mediated HSVtk gene transfer with direct intratumoral injections and Tet-On regulation for implanted human breast cancer

Background  

HSVtk/ganciclovir (GCV) gene therapy has been extensively studied in tumors and relies largely on the gene expression of HSVtk. Most studies, however, have failed to demonstrate any significant benefit of a controlled gene expression strategy in cancer treatment. The Tet-On system is commonly used to regulate gene expression following Dox induction. We have evaluated the antitumor effect of HSVtk/ganciclovir gene therapy under Tet-On regulation by means of adeno-associated virus-2 (AAV-2)-mediated HSVtk gene transfer with direct intratumoral injections in mice bearing breast cancer tumors.