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本文为探讨肠化生细胞增殖分型与肿瘤相关基因蛋白产物的关系,应用S—P免疫组织化学方法检测230例胃粘膜病变中增殖细胞核抗原(PCNA)的表达情况,计算细胞增殖指数(PI),检测肠化生细胞中肿瘤相关基因蛋白产物的表达。本级实验显示正常或慢性浅表性胃炎、伴肠化生慢性萎缩性胃炎、伴异型增生慢性萎缩性胃炎以及胃腺癌的PI逐渐增高,差异非常明显(P<0.01)。根据胃粘膜肠化生细胞的PI分布,进行肠化生细胞的增殖状态分型:高增殖、中增殖、低增殖状态型。此分型与各类胃粘膜病变显示较好的相关性,LPT为正常或基本正常胃粘膜,MPT为胃粘膜良性病变,HPT为胃粘膜癌前病变。HPT肠化生中肿瘤相关基因蛋白产物rasp21、EGFR、h-met的表达以及Ⅲ型肠化生的检出率显著高于MPT、LPT肠化生(P<0.05)。提示HPT肠化生细胞基因表达的异常率增高,且细胞分化不良,更具胃癌前病变的特征。胃粘膜肠化生细胞的增殖状态分型可作为评价胃癌发生风险的一项有效指标,具有较好的临床应用前景。 相似文献
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Summary:To construct the antisense transforming growth factorβ1(TGFβ1)gene and investigatethe effect of TGFβ1 autocrine loop blockage on the proliferation of osteosarcoma cells.TGFβ1 cDNAwas cloned by RT-PCR from human osteosarcoma cells(MG-63)and inserted into pcDNA_3 to con-struct an antisense expression vector,which was dubbed pcDNA_3-TGFβ1(-).MTT was used to de-tect the proliferation of osteosarcoma cells transfected by antisense TGFβ1 gene.Our results showedthat the proliferation of the transfected osteosarcoma cells was suppressed markedly.It is concludedthat TGFβ1 autocrine loop blockage in osteosarcoma cells could inhibit cell proliferation,which mightbe helpful for gene therapy of osteosarcoma. 相似文献
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Population aging has become a world wide tendency and according to the UNproject,the proportion of population above60 years old would exceed the proportionof children below1 5years old by2 0 50 .Erectile dysfunction(ED) seriously affectsthe quality of lif… 相似文献
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Effects of basic fibroblast growth factor on biological characteristics of osteoblasts 总被引:8,自引:0,他引:8
Objective: To elucidate the effects of exogenous basic fibroblast growth factor ( bFGF ) on biological characteristics of rat osteoblasts cultured in vitro. Methods: The osteoblasts isolated from a Sprague-Dawley rat and cultured in vitro were treated with different concentrations of bFGF ( 5-50 ng/ml) respectively. At 24 hours after treatment, the proliferating cell nuclear antigen was measured with immunocytochemistry, alkaline phosphatase (ALP) activity was determined and the expression of transforming growth factor beta 1 ( TGF-β1 )was detected to observe the effects of bFGF on growth and differentiation of osteoblasts. Resu/ts: bFGF ( 5-50 ng/ml ) could obviously promote the growth of osteoblasts. The intracellular expression of TGF-β1 mRNA increased significantly, but the intracellular ALP content decreased. Conclusions: bFGF can obviously stimulate the proliferation of osteoblasts and promote the synthesis of TGF-β1, but cannot promote the differentiation of osteoblasts. 相似文献
67.
探讨肠道血吸虫病与肠癌发生的关系。应用免疫组织化学LSAB法结肠血吸虫病并发结肠癌,肠息肉和无血吸虫病的肠部,肠息肉行c-erbB-2标记并AgNOR染色。结果;肿瘤细胞中癌基因c-erbB-2表达呈明显异质性;血吸虫病并发肠癌与无血吸虫病的肠癌表达阳性率,两者之间无明显;血吸虫病肠息肉的表达明显高于无血吸虫病的肠息肉。 相似文献
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目的 评价带锁髓内钉并植骨治疗股骨干陈旧性骨折的临床疗效和优点。方法 对1996年2月~2003年11月收治的47例陈旧性股骨干骨折患者进行回顾性分析。其中植骨组28例,非植骨组19例。采用切开复位,带锁髓内钉扩髓,静力型固定,根据骨折部位生长情况改为动力型固定。结果 术后随访39例,随访lO~25个月,平均随访时间14.2个月。植骨组骨折愈合率为95.6%(22/23),感染率为4.3%(1/23),骨折平均愈合时间为6.3个月,非植骨组则分别为62.5%(10/16),6.25%(1/16)和9.7个月。临近关节功能达正常,无感染、断钉等并发症。结论 带锁髓内钉静力固定能有效控制有害的剪应力,同时对骨折有一定的加压作用,可提供早期坚强的内固定,同时,植骨后骨折愈合快,并发症少,是治疗陈旧性骨折的理想方法。 相似文献
69.
<正> 1988年5月至2000年5月我们对不能手术切除的31例晚期肝癌患者经肝动脉与门静脉同时插管、间断灌注化疗,临床观察治疗效果尚满意,现总结报告如下。 1 临床资料 1.1 一般资料:31例中男27例,女4例,年龄最小37岁,最大68岁,平均年龄54例。原发性肝癌24例,弥漫性肝癌7例,均经病理诊断证实。 1.2 辅助治疗:为完成整个治疗过程,减少化疗药物抑制造血系统的毒性作用,保护消化功能。本组在化疗灌注的前、中、后同时应用以下辅助治疗:①聚肌胞2ml肌注或静滴2~3次/周。②干扰素1支,肌注1~3次/周。③华蟾素10~30mg 相似文献
70.
Objective To study the clinical effect of iliac flap straddled donor area to primary repair large defect of bone and soft tissue. Methods Through the anatomical study about iliac flap, the new oper-ation method about iliac flap was designed, which straddled donor area and used one blood vessel stem (deep iliae circumflex artery) and two branch blood vessel(deep iliac circumflex artery and superficial iliac circum-flex artery compounding in series) for blood supply. Blood supply area of the analogical operation was stud-ied by irrigating fresh cadaver with Indian ink. Thirty-two patients with large defect of bone and soft tissue (20 males, 12 females, 17-68 years old, average 36 years old) were repaired by this method, and the hemo-dynamics was studied by laser Doppler flowmetry. Results It was feasible to connect superficial iliac cir-cumflex artery with the branch of deep iliac circumflex artery. Indian ink irrigating fresh cadaver simulate operation showed that area scope dyed by Indian ink: in ilium, Indian ink was found in the bone which was (15.8±3.2) cm away from anterior superior iliac spine. In skin flap, Indian ink was found (8.6±2.4) cm superi-or, (5.4±2.6) cm inferior, (5.8±2.6) cm internal and (24.6±5.8) cm external from the anterior superior iliac spine. Laser Doppler flowmetry showed that the peripheral blood flow of skin flap increased as time passed, the increase speed began to tardy at the third day, then ingress the platform stage. Thirty-two cases were all succeed with functional rehabilitation and perfect shape. Thirty-one cases got completely bone healing; bone healing time ranged from 9 to 19 months, with an average of 12 months. One case turned to chronic os-teomyelitis, and had to suffer operation again, the bone healing time was 22 months. Conclusion As the ili-ae flap straddled donor area has sufficient blood supply, it can repair large defect of bone and soft tissue in one stage. 相似文献