人类肝硬化组织中卵圆细胞形态与数量的研究

目的观察乙型肝炎病毒和丙型肝炎病毒相关肝硬化组织中卵圆细胞数量与形态的异同.方法对38例乙型肝炎病毒相关肝硬化和15例丙型肝炎病毒相关肝硬化组织进行组织学观察及免疫组化染色.对其中5例标本进行透射电镜观察.以5例正常肝脏作对照.结果两组标本在光镜和电镜下均可观察到形态较相似的卵圆细胞.免疫组化及透射电镜显示,这些细胞具有双向分化的潜能.在两组标本中,卵圆细胞数量没有统计学差异（P=0.810）.正常肝组织未见类似细胞.结论人类乙型肝炎病毒相关和丙型肝炎病毒相关肝硬化组织中均存在卵圆细胞,这种细胞是具有双向分化能力的前体细胞.它们与不同病因肝硬化的发生与发展均有密切关系.     

大鼠脑血肿周围组织STAT 3的表达、细胞凋亡的变化与CNTF的影响

目的 观察大鼠脑血肿周围组织STAT3, Bcl-2, Caspase-3的表达情况,并探讨睫状神经营养因子(CNTF)对出血性脑卒中的治疗作用及其可能机制.方法 实验大鼠随机分为假手术组、模型组、CNTF治疗组,采用自体股动脉血注入大鼠尾壳核建立脑出血模型,CNTF治疗组于术后经尾静脉注射CNTF.分别于术后12h、24h、3d、5d 4个时间点取脑组织,应用免疫组化方法检测血肿周围组织STAT3, Bcl-2, caspase-3的表达情况.结果 CNTF治疗组大鼠脑血肿周围组织STAT3, Bcl-2的表达明显高于其他组,Caspase-3的表达水平比模型组低.结论 CNTF对脑出血后损伤神经细胞具有保护作用,其可能的机制为通过上调STAT3的表达,使Bcl-2的表达升高,从而减少出血灶周围细胞的凋亡.     

舒筋汤对兔跟腱粘连影响的实验研究

目的:研究舒筋汤对预防兔肌腱修复术后粘连的作用。方法:以家兔跟腱制作损伤模型,用舒筋汤制剂给予治疗,并设立空白对照组,于术后10天、20天、30天切取标本,对其进行组织学观察和检测,并作统计学分析和检验,比较实验组与对照组的差异,评价舒筋汤对跟腱粘连的影响。结果:实验组与对照组比较,肌腱的大体观察、光镜观察、成纤维细胞计数比较、电镜观察以及肌腱粘连范围检测均好于对照组,两者差异显著,P<0.01。结论:舒筋汤具有预防兔肌腱粘连的作用。     

环氧化酶-2表达与胃癌淋巴管生成及淋巴结转移的关系

目的研究环氧化酶-2(COX-2)与血管内皮生长因子C(VEGF-C)在胃癌中的表达及其与胃癌临床病理因素间的关系,并评价上述两指标与肿瘤新生淋巴管和淋巴结转移之间的相关性。方法采用免疫组织化学(免疫组化)染色法,检测63例胃癌原发灶标本COX-2与VEGF-C蛋白的表达情况,并用淋巴管内皮细胞特异性抗体LYVE-1行免疫组化染色,观察肿瘤组织淋巴管生成状况。结果所测63例胃癌组织中,COX-2及VEGF-C的表达阳性率分别为66.7%(42/63)和52.4%(33/63),35例标本(55.6%)中可检测到LYVE-1阳性的肿瘤新生淋巴管。COX-2表达与VEGF-C表达、肿瘤新生淋巴管形成及淋巴结转移等临床病理指标间呈明显相关关系(P<0.05);但与患者性别、肿瘤大小、肿瘤部位、Lauren分型及有无浆膜浸润等无明显相关。结论胃癌组织中,COX-2表达与VEGF-C表达状态、肿瘤淋巴管生成和淋巴结转移均呈明显相关。COX-2可能通过上调VEGF-C表达,促进胃癌淋巴管生成,并顺次导致淋巴结转移的发生。     

Reconstruction of musculoskeletal defects about the knee for tumor

One of the most challenging problems of limb salvage is a large tumor involving the knee joint. Since 1970, 79 patients, ranging in age from 14 to 74 years (mean, 27 years), have had reconstruction of the knee after en bloc resection of a primary bone tumor. Sixty-one patients had lesions involving the distal femur, with a mean resection length of 13.5 cm, and 18 patients had lesions involving the proximal tibia, with a mean resection length of 10.5 cm. Thirty-nine patients had malignant lesions, of which osteosarcomas predominated, and 40 patients had benign tumors, of which giant cell tumors were the most prevalent. Reconstruction was done with a custom total knee arthroplasty in 41 patients, a resection arthrodesis in 27, and an allograft in 11. The functional results were graded according to the rating system devised by the Musculoskeletal Tumor Society. of the patients with resection arthroplasty, 70% had a good or excellent rating, although ten required revision. Of the patients with resection arthrodesis, 74% had a good or excellent rating, as did 55% of the patients with osteochondral allografts. When a limb salvage procedure is done, careful consideration must be given to the type of procedure chosen to reconstruct the knee. This decision is based on a number of factors related to the tumor and the patient. Although these various procedures promise functional restoration, the reconstructive procedure should be individualized and designed to meet the needs of the patient.     

羟丙基-β-环糊精的结构

用红外光谱法对羟丙基-β-环糊精的结构进行了定性分析,用气相色谱-质谱联用方法,通过对质谱图解析,详细研究了羟丙基-β-环糊精中羟丙基的分布。此羟丙基-β-环糊精以C2位取代为主,计算得到其平均取代度为6.41。     

小脑后下动脉动脉瘤的诊断和治疗

目的探讨小脑后下动脉动脉瘤的临床特征、诊断、鉴别诊断和治疗。方法回顾性分析12例小脑后下动脉瘤的临床表现、影像学特征、手术效果及诊治过程中存在的相关问题。结果12例中有11例因动脉瘤破裂出血而发病,单纯第四脑室出血4例,全脑室系统出血2例,小脑半球出血3例,小脑蚓部伴第四脑室出血1例,侧脑室伴第三脑室出血1例,以后颅窝占位病变表现1例。8例术前行DSA检查明确诊断,4例术中明确诊断。12例均行后颅窝开颅显微手术治疗,其中动脉瘤颈夹闭9例,孤立切除2例,动脉瘤加固术1例,术后2例因脑积水加重行脑室-腹腔分流术。12例中除1例术后留有轻偏瘫外,其余11例恢复良好。结论小脑后下动脉瘤多以第四脑室出血发病,少数以小脑半球或蚓部出血发病,及早治疗效果满意。手术方式应尽量夹闭动脉瘤颈,对于小脑后下动脉末端动脉瘤,可以采用孤立切除术。     

Nerve growth factor and tyrosine kinase A in human salivary adenoid cystic carcinoma: expression patterns and effects on in vitro invasive behavior.

PURPOSE: Perineural invasion is a frequent occurrence in salivary adenoid cystic carcinoma (ACC) and may prevent complete surgical resection. Studies have indicated that nerve growth factor (NGF) and its high-affinity receptor tyrosine kinase A (TrkA) may play a role in perineural invasion in several malignancies in which perineural invasion is observed. The present study was conducted to investigate the expression of NGF and TrkA in salivary ACC and to examine the effects of NGF on adhesion, migration and invasion capacities of a salivary ACC cell line (SACC-83) in vitro. PATIENTS AND METHODS: Expression of NGF and TrkA was explored using immunohistochemistry in paraffin-embedded tissues of 32 cases of salivary ACC. The effects of NGF on in vitro adhesion, migration, and invasion capacities of the SACC-83 cell line were examined using an MTT assay and a modified Boyden chamber assay respectively. RESULTS: In ACC specimens, 31 (96.9%) and 32 (100%) tumors showed immunoreactivity for NGF and TrkA respectively. Significant correlations were found between NGF/TrkA expression levels and perineural invasion (P < .05). In cell adhesion assay, the percent adherences of SACC-83 cells co-cultured with 25 ng/ml NGF at 1.5 hours and 5, 25 ng/ml NGF at 6 hours were significantly higher than that co-cultured with 0 ng/ml NGF (P < .05). However, high concentration of NGF (500 ng/ml) resulted in a significant inhibition of invasion (P < .05). CONCLUSION: Overexpression of NGF and TrkA in human salivary ACC tissues may constitute a reason for perineural invasion in salivary ACC.     

牛骨形成蛋白在骨不连中的临床应用

应用牛骨形成蛋白（ｂｏｖｉｎｅＢｏｎｅＭｏｒｐｈｏｇｅｎｅｔｉｃＰｒｏｔｅｉｎ简称ｂ－ＢＭＰ）成功的治愈１３例骨不连病人。经过１３个月～２９个月随访观察，效果较好。本组病人术前平均已做过１．５次手术。１３例病人中，有１２例被１次治愈。１例病人再次行内固定加用牛骨形成蛋白的植入也被治愈。骨形成蛋白的应用方式，采用同锻石膏复合后植入骨不连处。平均每个病人植入１００ｍｇＢＭＰ，１３例病人平均治愈时间为４．７个月。术后没有任何并发症。     

颈淋巴结清扫手术后乳糜漏的处理

目的 :探讨颈淋巴结清扫手术后乳糜漏的处理方法。方法 :回顾分析颈淋巴结清扫手术 12 85例术后发生乳糜漏 2 1例的临床资料。结果 :乳糜漏的发生率为 1.6 % ,18例经保守治疗治愈 ,3例经再次手术治愈。结论 :对颈淋巴结清扫术后的乳糜漏应及早诊断 ,术中应加强预防并及时处理