AdCMVCD／5FC自镣基因系统治疗CABG术后再狭窄

目的 研究胞嘧啶脱氨酶基因/5—氟胞嘧啶自杀基因系统对冠状动脉旁路移植术后再狭窄的治疗作用。 方法将含AdCMVCD的病毒上清加压注入兔颈外静脉管腔,半小时后剪下该静脉并用Cuff技术移植于兔颈动脉上,以单纯移植组和AdCMVLacz为对照,通过光镜和电镜观察平滑肌细胞的形态变化,并对血管桥外径、管腔、内膜、中膜面积和外弹力膜周长及管腔相对丧失率进行定量分析,以观察抑制内膜和中膜增生、防止血管再狭窄的效果。 结果 治疗组的内膜和中膜面积明显小于两个对照组;管腔丧失率亦明显减少,AdCMVCD组为3.68±0.42％,单纯移植组为9.68±0.41％.P<0.01。结论 AdCMVCD自杀基因系统对冠状动脉旁路移植术后再狭窄有明显的治疗作用。     

注射用司帕沙星的溶血试验

目的　观察注射用司帕沙星在试管内对新西兰白兔有无溶血、凝集作用。 方法 　取规定量受试药加入 2 %兔血生理盐水混悬液中 ,观察溶血和凝集情况。 结果 　第一～六管溶液中红细胞全部下沉 ,上层液体无色澄明 ,第七管全部溶血。 结论 　注射用司帕沙星在终浓度 1mg·m L- 1时 ,对兔红细胞无溶血和凝集现象。     

输入性传染源导致SARS院内感染暴发的流行特点

目的 通过对一起输入性传染源引发的院内严重急性呼吸道综合征(SARS)感染暴发进行调查，找出其流行特点，探讨发病规律和流行因素，为预防和控制院内SARS感染提供参考。方法通过座谈了解、查阅病案和查看感染现场，描述整个感染传播过程和各因素与发病间的关系。结果 该院3月18日接诊了一名发热患后，科内5名员工相继发病，罹患率达21．74％，整个感染过程可见清晰的传播链，感染与无防护密切接触、室内小环境空气质量差有关。发病潜伏期平均10天以上，平均病程49．4天。经采取隔离、消毒措施后，未见新发病。结论 该院内SARS感染首例传染源为输入性；急诊科护士是感染的高危人群；无防护近距离密切接触是SARS的主要传播方式。     

Trace Metals' abnormalities in hemodialysis patients: relationship with medications

A multicenter collaborative study was performed to investigate the prevalence of abnormal blood contents of 6 trace metals, copper (Cu), zinc (Zn), aluminum (Al), lead (Pb), cadmium (Cd), and mercury (Hg), in hemodialysis (HD) patients and to analyze their relationship with the medications, such as CaCO3, Ca acetate, Al containing phosphate-binding agents, 1,25-dihydroxy vitD3, 1-hydroxy vitD3, and erythropoietin (EPO), as well as hematocrit level, by chi-square statistics. From 6 medical centers in Taiwan, we included 456 patients in maintenance HD for more than 4 months for this study, and they had continued the previously mentioned medications for at least 3 months. Blood samples were collected before initiating HD, and atomic absorption spectrophotometry was used to measure plasma levels of Cu, Zn, and Al as well as whole blood levels of Pb, Cd, and Hg. Three hundred seventy-five (78%) of the HD patients had low plasma Zn levels, that is, <800 microg/L, and the mean (+/-SD) concentration was 705.8 (+/-128.23) microg/L in all subjects. One hundred forty-one (31%) of the HD patients had high plasma Al, that is, >50 microg/L, and the mean (+/-SD) was 44.30 (+/-28.28) microg/L in all subjects. Three hundred thirty-three (73%) of the dialysis patients had high Cd levels, that is, >2.5 microg/L, and the mean (+/-SD) was 3.32 (+/-1.49) microg/L in all subjects. The majority of HD patients had normal blood levels of Cu, PB, and Hg. Only 21 (4. 6%), 5 (1.1%), and 3 (0.06%) patients had elevated blood levels of Cu, Pb, and Hg, respectively. Their mean (+/-SD) blood concentration of Cu, Pb, and Hg were 1,049.78 (+/-233.25) microg/L, 7.45 (+/-3.95) microg/dL, and 3.17 (+/-25.56) microg/L, respectively. Three patients had elevated plasma Hg concentrations, that is, 546, 12.6, and 24.0 microg/L, respectively. In the 152 normal healthy age and sex matched control group, the blood levels of Al, Cd, and Pb were all significantly lower than the HD patients. However, the levels of Cu and Zn were higher in the control group. The Hg level was not significantly different in both groups. There was no statistical difference between patients with normal and abnormal blood levels of trace metals in various medications except Al containing phosphate binder. The Al containing phosphate binder users had significantly higher plasma Al levels (54.71 +/- 26.70 versus 41.15 +/- 28.03 microg/L, p < 0.001) and hematocrit levels (29.61 +/- 4.61 versus 27. 81 +/- 3.91, p < 0.0005). There was no statistical correlation between erythropoietin (EPO) dose and hematocrit level in these patients. In conclusion, the blood level of trace metals of these HD patients except Al was not related to their medications. However, caution must be exercised in interpreting this result as dose and duration of medication; efficiency of HD and water treatment may play an important role. Otherwise, environmental factors, diet, and the aging process may contribute to the trace metal burden in uremia. Thus, Zn and Cu are abundant in seafood, and Cd is abundant in contaminated plants such as rice.     

肛欣冲剂治疗肛肠疾病80例疗效观察

目的:观察肛欣冲剂熏洗治疗肛肠疾病的临床疗效。方法:将肛肠病患者120例随机分为2组。治疗组80例应用肛欣冲剂(由马齿苋、五倍子、蛤蟆草、枳壳、芒硝、冰片等组成)治疗,对照组40例用复方荆芥熏洗剂治疗。2组均以10天为1疗程。结果:治疗组临床治愈43例,显效24例,有效7例,无效6例,总有效率92.5％。对照组临床治愈15例,显效11例,有效5例,无效9例,总有效率77.5％,2组总有效率比较,差异有显著性意义(P<0.05),提示治疗组疗效优于对照组。结论:肛欣冲剂在改善肛门疼麻肿胀、下坠、便血、肛门潮湿等常见症状方面,优于复方荆芥熏洗剂。     

宫颈癌组织血管内皮生长因子测定的临床意义

目的 :探讨血管内皮生长因子 (vascularen dothelialgrowthfactor ,VEGF)在宫颈癌诊断、治疗以及转移中的临床意义。方法 :酶联免疫吸附分析法(enzyme linkedimmunosorbentassay ,ELISA)测定 2 0例宫颈上皮内瘤样变患者和 60例宫颈癌患者组织中的VEGF含量。结果 :VEGF含量在宫颈上皮内瘤样变、宫颈癌组织中分别为 5 5 6pg/mg、410 2pg/mg ,差异有统计学意义 ,P <0 0 1。肿 瘤≥ 4cm者为 960 0 pg/mg ,淋巴结转移者为 780 5 pg/mg ,而肿瘤 <4cm者 ,淋巴结未转移者分别为 180 5 pg/mg、2 3 0 0pg/mg。差异有统计学意义 ,P <0 0 5。而在临床分期、病理分型、病理分级间差异无统计学意义。结论 :组织VEGF含量检测对宫颈癌的诊断有一定的临床价值 ,其含量变化可监测宫颈癌的转移。     

VEGF及其受体KDR表达与宫颈癌细胞增殖及侵袭转移的关系

目的 :探讨血管内皮生长因子 (vascu larendothelialgrowthfactor ,VEGF)及其受体(kinaseinsertdomaincontainingreceptor ,KDR)在早期宫颈癌的表达和临床意义。方法 :采用免疫组织化学SP法检测 75例早期宫颈癌(ICC)、18例宫颈上皮内瘤样病变 (CIN)和 15例正常宫颈上皮 (NCE)中VEGF、KDR和增殖细胞核抗原 (Ki 67)的表达。结果 :VEGF、KDR、Ki 67在NCE、CIN和ICC的阳性表达率分别为 2 6 67% ( 4 /15 )、61 11% ( 11/18)和77 3 3 % ( 5 8/75 ) ,13 3 3 % ( 2 /15 )、 61 11%( 11/18)和 69 3 3 % ( 5 2 /75 )及 13 3 3 % ( 2 /15 )、72 2 2 % ( 13 /18)和 96 0 0 % ( 72 /75 )。从NCE到CIN再到ICC ,VEGF、KDR和Ki 67的阳性表达率均逐渐升高 ,P <0 0 5。VEGF、KDR在ICC的表达均与盆腔淋巴结转移、脉管浸润、组织学分级和Ki 67表达有关 ,P <0 0 5 ;而均与患者年龄、FIGO分期、组织学类型和间质浸润深度无关。有盆腔淋巴结转移、脉管浸润、组织学分级为Ⅲ级及Ki 67高度表达者的VEGF、KDR阳性表达率分别显著高于无盆腔淋巴结转移、无脉管浸润、组织学分级未超过Ⅱ级及Ki 67表达在中度以内者 ,P<0 0 5。VEGF与KDR在ICC的表达呈显著正相关 ,r =0 5 6,P <0 0 1;并且两指标均阳性表达者 ,其Ki 67高度表达、     

卵巢上皮癌自杀基因疗法研究进展

近年来卵巢上皮癌的自杀基因疗法取得很大进展,主要体现在:由组织特异性启动子参与调控,增强基因转染的靶向性,降低对非肿瘤组织的副作用;自杀基因(如HSV-TK基因)与免疫增强基因的联合应用;自杀基因与放射治疗的联合应用;增强自杀基因表达效率的辅助方法.     

Transitional cell carcinoma of the ovary: Report of three cases

Background We investigated retrospectively the records and tissue samples of patients with primary ovarian transitional cell carcinoma to determine clinical and pathologic features. Methods The records of 3 patients with ovarian transitional cell carcinoma were reviewed using data from several imaging techniques: transvaginal ultrasound, computed tomography, and magnetic resonance imaging. We also determined levels of several tumor marker molecules; and the level of carbohydrate antigen 125 (CA 125), was examined by means of immunohistochemistry. Results The tumors of 2 patients were classified as pure trnasitional cell carcinoma; in the remaining patient, as predominantly transitional cell carcinoma. All tumors were bilateral, and 2 of the 3 tumors formed solid masses. Areas of irregular high intensity signals were seen in magnetic resonance images of the solid parts of the tumors. All 3 tumors tested positive for CA 125; histochemical expression was confined to the tumor cell membrane and/or the cytoplasm in all cases. The tumors of all 3 patients tested negative for carcinoembryonic antigen (CEA), and second-look laparotomies did not reveal any residual neoplasms in any of the patients. The patients have been in a disease-free state for 34, 42, and 14 months, respectively. Conclusion Our results suggest that transitional cell carcinomas tend to arise bilaterally and to form solid tumors. Magnetic resonance imaging was a useful diagnostic modality in these cases. Transitional cell carcinoma was characterized by the presence of CA 125 and the absence of CEA.     

双链RNA检测对白血病临床价值的探讨

采用计算双链ＲＮＡ（ｄｓ－ＲＮＡ）过量值的方法，对白血病、营养性贫血、非血液病、健康人分组进行了观察比较，发现白血病组与非白血病组有显著性差异，且随着病情的缓解，细胞内ｄｓ－ＲＮＡ的含量下降。提示：ｄｓ－ＲＮＡ的监测对白血病的诊断及复发的早期发现有一定的临床价值。