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51.
吸烟对多环芳烃接触者生物膜损伤指标、染色体畸变和P21蛋白的影响 总被引:1,自引:0,他引:1
目的:了解吸烟对多环芳烃接触者生物膜损伤指标、染色体畸变和血清癌基因蛋白P21的影响.方法:对接触多环芳烃化合物的24名焦炉工和27名沥青工中吸烟与不吸烟者的血清谷胱甘肽S-转移酶(GST)、血清脂质结合唾液酸(LSA)、染色体畸变和血清癌基因蛋白P21水平进行研究.结果:吸烟与不吸烟者间GST、LSA、染色体畸变率和血清P21水平各指标差异均无显著性差异(P>0.05).结论:吸烟对多环芳烃接触者沥青工和焦炉工的GST、LSA、染色体畸变率和血清P21水平无明显影响,可能是沥青工、焦炉工接触多环芳烃混合物浓度较高,掩盖了吸烟的作用. 相似文献
52.
原发性肝癌血清糖抗原50的检测及意义 总被引:2,自引:0,他引:2
目的 探讨血清糖抗原50(CA50)检测在原发性肝癌诊断中的价值。方法 采用IRMA方法检测38例原发性肝癌患者血清CA50水平,并与43例良性肝病及20例正常对照对比分析。结果 肝癌患者血清CA50明显高于良性肝病组及正常对照组(P〈0.05)。CA50诊断肝癌的敏感性为57.8%,与AFP联合检测诊断肝癌的敏感性可由单纯测定AFP的65.7%提高到89.4%。结论 在原发性肝癌中,血清CA50 相似文献
53.
为探讨B超与放射免疫分析诊断卵巢癌的临床价值 ,对 45例卵巢癌患者行B超及放射免疫分析血液CEA、CA12 5、TSGF。提示B超与CA12 5、TSGF ,CEA联合检查 ,可提高对卵巢癌的诊断率 相似文献
54.
对 30 2例胃癌术前检测CA5 0、CA199、CA12 5、CA72 4、CEA、β2 -MG、SA、Fer等 8种肿瘤标志物 ,并按年龄、胃癌病期及病理分类分组分析。结果 :(1) 30 2例胃癌血清中 8种肿瘤标志物总的阳性率依次为 β2 -MG6 5 .9%、CA19932 .1%、CA72 42 9.5 %、SA2 4.5 %、CA12 5 16 .9%、CEA13 .2 %、CA5 0 11.6 %、Fer(- )。 (2 ) 8种肿瘤标志物阳性率与年龄大小均无关。 (3) β2 -MG、CA72 4、CA12 5、CA199、SA、CEA、在Ⅲ、Ⅳ期病例中均较敏感 ,且随病期增加 ,阳性率增高。 (4 )CA199和CA72 4对腺癌、β2 -MG和SA对低分化腺癌、β2 -MG和CA72 4对粘液癌、混合型癌阳性率较高。提示血清测β2 -MG、CA199、CA72 4、SA、CA12 5对胃癌的辅助诊断有一定应用价值 相似文献
55.
子宫腺肌病误诊原因分析及术前诊断临床探讨 总被引:5,自引:0,他引:5
目的;探讨子宫腺肌病误诊原因及近年术前诊断研究进展,方法;对我院近10年收治的197例腺肌病患者的临床资料进行回顾性分析。结果:1990年元月至1997年12月128例腺肌病患者术前,术后诊断符合率仅为29.7%,术后误诊,漏诊率达70.3%,1998年元月至1999年12月69例术前经测定血清CA125及 腔双氧水造影后误诊,漏诊率降为27.5%术前主要误诊为子宫肌瘤或(和)子宫内膜异位症,结论 相似文献
56.
Antibiotic C3368-A,a fungus-derived nucleoside transport inhibitor,potentiates the activity of antitumor drugs 总被引:5,自引:0,他引:5
Jian Su Yong-su Zhen Chang-qing Qi Ji-lan Hu 《Cancer chemotherapy and pharmacology》1995,36(2):149-154
Antibiotic C3368-A (CA) is produced by a fungus strain from a soil sample collected in Antarctica. CA markedly inhibited radiolabeled thymidine and uridine transport in mouse Ehrlich carcinoma cells, its 50% inhibitory concentration (IC50) being 4.6 and 7.7 M, respectively. In clonogenic assay, CA displayed a synergistic effect with methotrexate (MTX), mitomycin C (MMC), 5-fluorouracil (5FU), and Adriamycin (ADR) against human oral epidermoid carcinoma KB cells. CA also markedly enhanced the inhibitory effect of 5FU and ADR on the proliferation of human hepatoma BEL-7402 cells as determined by thep-nitrophenyl-N-acetyl--d-glucosaminide (NAG) enzyme-reaction assay. 5FU or ADR cytotoxicity was not augmented by CA in human fetal lung 2BS cells. In vivo, CA significantly potentiated the inhibitory effect of MMC against colon carcinoma 26 in mice. No significant augmentation of toxicity by the combination was found in treated mice. The results suggest that CA, the newly found nucleoside-tranport inhibitor, may be useful in potentiation of the effect of antitumor drugs. 相似文献
57.
The possibility of a direct projection from the perirhinal cortex (PER) to areas CA1 and subiculum (SUB) in the hippocampus has been suggested on the basis of tracer studies, but this projection has not unequivocally been supported by physiological studies. The demonstration of such a functional pathway might be important to understand the functioning of the hippocampal memory system. Here we present physiological and further anatomical evidence for such a connection between PER and the hippocampus. Electrical stimulation of PER in vivo evoked field potentials (EFPs) at the border area of CA1/SUB, consisting of a short latency and a longer latency component. Current source density analysis revealed that the sink of the short latency component was situated in the molecular layer of area CA1/SUB, while the longer latency component had its sink in the outer molecular layer of the dentate gyrus (DG). Anterograde tracer injections in PER showed labelled fibres in the border area of CA1/SUB, but anatomical evidence for a projection of PER to DG was not found. When synaptic transmission in the entorhinal cortex was partly blocked, the amplitude of the longer latency component of the recorded EFPs in the hippocampus was decreased while the short latency component was not affected, which suggests that the indirect pathway originating in PER is mediated through a synaptic relay in the entorhinal cortex. From the present results we conclude that information originating in PER reaches area CA1/SUB by parallel, direct and indirect, routes. The existence of this parallel organization appears to form an essential feature for the proper function of the medial temporal lobe memory system. 相似文献
58.
Britt MT LaBree LD Lloyd MA Minckler DS Heuer DK Baerveldt G Varma R 《Ophthalmology》1999,106(12):2312-2318
OBJECTIVE: To report the longer term results of a randomized, clinical trial comparing the 350-mm2 and the 500-mm2 Baerveldt glaucoma implants. DESIGN: Extended follow-up on a randomized, controlled trial. PARTICIPANTS: Between March 1991 and April 1993, 107 patients with uncontrolled intraocular pressure (IOP) due to non-neovascular glaucoma associated with aphakia, pseudophakia, or failed filters were randomly assigned for surgical placement of either the 350-mm or the 500-mm2 Baerveldt implant at the Doheny Eye Institute. METHODS: A random-numbers table was used to assign each patient to one of the two groups. Preoperative IOPs and visual acuities were recorded. Clinical records were reviewed to ascertain postoperative IOPs, visual acuities, number of medications used, and implant-related complications that occurred throughout the follow-up period. MAIN OUTCOME MEASURES: Success was defined as IOP of 6 mmHg or greater and of 21 mmHg or less in two or more consecutive follow-up visits without further glaucoma surgery or loss of light perception attributable to glaucoma. RESULTS: The overall success rates were 87% for the 350-mm2 group and 70% for the 500-mm2 group (P = 0.05). Average follow-up was 37 months (range, 1-76 months) for the 350-mm2 group and 34 months (range, 5-77 months) for the 500-mm2 group. The life-table success rates declined over time for both implant groups, from a high of 98% for the 350-mm2 group and 92% for the 500-mm2 group at 1 year to a cumulative success rate of 79% for the 350-mm2 group and 66% for the 500-mm2 group at 5 years. Visual acuities were better or remained the same in 50% of the patients in the 350-mm2 group and 46% of those in the 500-mm2 group. Complications during the 5-year follow-up were also statistically similar. CONCLUSIONS: The longer term results show that the 350-mm2 Baerveldt implant is more successful than the 500-mm2 implant for overall IOP control. Interval comparisons indicate a higher rate of success for the 350-mm2 implant in the first, second, third, fourth, and fifth years of implantation. Visual acuities, implant-related complications, and average IOPs were statistically indistinguishable between the two groups. 相似文献
59.
OBJECTIVE: To describe the characteristics and systemic disease associations of episcleritis in childhood. DESIGN: Retrospective, observational case series. PARTICIPANTS: Twelve children diagnosed with episcleritis between July 1981 and June 1998. METHODS/TESTING: Complete eye and systemic evaluations. MAIN OUTCOME MEASURES: Characteristics of episcleritis and presence and nature of concurrent systemic disease. RESULTS: The 12 children (10 boys and 2 girls) ranged in age from 13 months to 16 years. Five children had bilateral simple episcleritis, one had bilateral nodular episcleritis, and six had unilateral simple episcleritis. The eye examination was otherwise normal and recovery was uneventful in all cases. Six of the nine children older than 5 years of age had one of the following rheumatologic diseases: systemic lupus erythematosus, juvenile rheumatoid arthritis, spondyloarthropathy, inflammatory bowel disease, rheumatic fever, or polyarteritis nodosa. All three children younger than 5 years of age had simple episcleritis, an antecedent viral illness, and presented within 2 months of each other. CONCLUSIONS: Episcleritis is a rare occurrence in childhood, especially in children younger than 5 years of age. In older children, it is frequently associated with rheumatologic disease. 相似文献
60.
目的:探讨 C A15 - 3 对术后乳腺癌的随诊价值。材料与方法:1996 年6 月至1996 年12 月行常规放疗的术后乳腺癌患者45 例,于放疗前开始首次检测外周血 C A15 - 3 值,在以后的随诊工作中,作为检查项目之一,即每1~3 个月查血1 次,监测时间为2 年。结果:有复发转移与无复发转移两组的 C A15 - 3 水平分别为(56 .21 ±8 .37) U/ml,(13 .49 ±2 .22) U/ml, P< 0 .01 ; C A15 - 3 升高的5 例复发转移患者, C A15 - 3 首次升高均出现于临床或影像学检查之前,提早时间平均为(2 .54 ±1 .36) 个月;以 C A15 - 3 > 30 U/ ml 为阳性,6 例复发、转移患者中,5 例阳性,阳性率的95 % 可信区间为36 % ~100 % ,39 例无复发、转移患者中,1 例 C A15 - 3 阳性,假阳性率的95 % 可信区间为0 ~14 % 。结论: C A15 - 3 对乳腺癌术后的转移或复发有较好的特异性和阳性预测性,在术后随诊中有不可替代的预测作用。 相似文献