Skp2、p27在宫颈癌组织中的表达及临床意义

[目的]探讨Skp2、p27在宫颈癌组织中的表达及其临床意义。[方法]应用免疫组化法检测50例宫颈癌、25例宫颈上皮内瘤样病变（CIN）和10例正常宫颈组织中Skp2、p27的表达。[结果]Skp2在宫颈癌组织、CIN和正常宫颈组织中的表达率分别为86.00%（43/50）、68.00%（17/25）和30.00%（3/10）,差异有显著性（P〈0.05）。p27在宫颈癌组织、CIN和正常宫颈组织中的表达率分别为32.00%（16/50）、56.00%（14/25）和80.00%（8/10）,差异有显著性（P〈0.05）。Skp2和p27的高表达与宫颈癌患者的年龄、临床分期、分化程度和组织学类型均无相关性（P〉0.05）。Skp2和p27在宫颈癌中的表达呈负相关（r=-0.437,P〈0.01）。[结论]Skp2和p27参与了正常宫颈组织向宫颈上皮内肿瘤的演变,可能与宫颈癌的发生和发展有关。     

转录信号传导子与激活子3在宫颈癌及宫颈癌上皮内瘤变中的表达及临床意义

目的探讨转录信号传导子与激活子3(Stat3)在宫颈鳞状细胞癌和宫颈上皮内瘤变(CIN)中的表达及与临床病理特征的关系,及其在宫颈癌病变中的可能作用。方法应用免疫组织化学SP法,检测44例宫颈鳞状细胞癌,50例宫颈上皮内瘤变,15例正常宫颈组织中Stat3蛋白的表达水平。结果Stat3在宫颈鳞状细胞癌组中的阳性表达率为84.1%(37/44),明显高于宫颈上皮内瘤变组,P<0.05;亦明显高于正常宫颈组织,P<0.01;同时发现Stat3表达率与宫颈癌组织学分期有关,P<0.05。结论Stat3过表达可能在宫颈鳞状细胞癌的发生、发展及分化过程中起重要作用。     

Survivin与MIF在宫颈癌组织中的表达及意义

目的 探讨Survivin和MIF在宫颈癌组织巾的表达及意义.方法 采用免疫组化方法检测50例官颈癌组织,20例官颈上皮内瘤变(CIN)及lO例正常官颈组织中Survivin和MIF的表达情况.结果 Survivin在宫颈浸润癌组的阳性表达率明显高于正常宫颈组和CIN组,差异有统计学意义(P<0.05),但在正常宫颈组和CIN组Survivin的阳性表达差异无统计学意义(P>0.05).MIF在正常宫颈组织中不表达,在CIN组和官颈癌组表达率增高,且正常宫颈组和CIN组及宫颈癌组中M1F的阳性表达差异有统计学意义(P0.05).Survivin在官颈癌组织中的阳性表达与肿瘤的组织学类型有关(P<0.05),与患者的年龄、肿瘤的临床分期、分化程度、有无盆腔淋巴结转移等无关(P>0.05).MIF在官颈癌组织中的阳性表达与肿瘤的临床分期、分化程度、组织学类型、淋巴结转移及患者的年龄均无关(P>0.05).结论 survivin和MIF作为肿瘤相关因子在宫颈癌的发生发展过程中有重要作用,两者的表达与凋亡机制的紊乱及癌基因与抑癌基凶的水平失衡关系密切.     

p27在50例宫颈癌中的表达及意义

[目的]探讨p27在宫颈癌中的表达及其临床意义。[方法]应用免疫组化法检测50例宫颈癌、25例宫颈上皮内瘤样变（CIN）和10例正常宫颈组织石蜡包埋组织中p27蛋白的表达。[结果]p27在宫颈癌中的阳性表达率为32.00%（16/50）,在CIN中的阳性表达率为56.00%（14/25）,在正常宫颈组织中的阳性表达率为80.00%（8/10）,三者比较差异有统计学意义（P〈0.01）。p27高表达与宫颈癌患者的年龄、临床分期、病理类型、组织学分级均无相关性（P〉0.05）。[结论]p27在宫颈癌低表达,其可作为宫颈癌癌前病变的生物学标志物。     

EB病毒与P16基因蛋白在子宫颈鳞癌中的表达

目的:分析子宫颈EBV感染对抑癌基因P16蛋白表达的影响,探讨EBV的致癌机理。方法:采用组织芯片技术和免疫组织化学S-P法,检测13例正常宫颈、39例宫颈上皮内瘤变和28例宫颈鳞癌组织中EBV及P16蛋白的表达。结果:EBV阳性表达率在正常宫颈、宫颈上皮内瘤变、宫颈癌组分别为15%(2/13)、51%(20/39)和68%(19/28),癌及上皮内瘤变组均明显高于正常宫颈组(P<0·05)。P16在正常宫颈组织与上皮内瘤变及宫颈癌中的阳性表达率分别为7·7%(1/13)、64%(25/39)和79%(22/28),三组间差异有显著性(P<0·05)。EBV感染与非感染的宫颈癌组织中,P16的阳性表达率分别为79%和78%,两组间无显著性差异(P>0·05)。结论:EBV感染与宫颈癌的发病密切相关,但其致癌机制可能不是通过影响抑癌基因P16的表达而引起的。     

PPARγ在子宫颈癌和子宫颈上皮内瘤样变中的表达及意义

目的:探讨过氧化物酶增殖物激活受体γ( PPARγ) 在子宫颈癌和子宫颈上皮内瘤样变中的表达及其临床意义.方法:应用免疫组化法检测31例子宫颈癌、18例子宫颈上皮内瘤样变和10例正常子宫颈组织石蜡包埋组织中PPARγ的表达.结果:PPARγ在子宫颈癌中的阳性表达率为80.7%,在CIN中的阳性表达率为50.0%,在正常子宫颈组织中的表达率为10.0%.三者比较差异具有统计学意义(P＜0.01) .PPARγ高表达与宫颈癌患者的年龄、临床分期、分化程度和组织学类型均无相关性(P＞0.05).结论:PPARγ在宫颈癌中的表达高于宫颈上皮内瘤变和正常宫颈组织,PPARγ高表达与宫颈癌的发生有关.     

CK17在宫颈上皮内瘤变和宫颈癌组织中的表达及意义

目的 探讨宫颈上皮内瘤变及宫颈癌中CK17的表达情况及其相互关系及意义.方法 应用免疫组织化学S-P法检测15例正常宫颈组织、15例CINⅠ、17例CINⅡ、21例CINⅢ和36例宫颈癌组织中CK17的表达情况.结果 CK17的阳性表达定位于细胞质.在正常宫颈组织、CIN和宫颈癌中,CK17的阳性表达率分别为0、56.6%和83.3%,3组相比,差异有统计学意义(χ2=30.177,P<0.05).CIN间,CK17阳性表达率分别为20.0%、64.7%和76.2%,CINⅡ、CINⅢ组阳性率均高于CINⅠ组,差异有统计学意义(P=0.016;P=0.002).随着宫颈病变程度的加重,CK17的阳性表达率逐渐增高,CK17阳性表达率同宫颈病变程度呈正相关关系(γ=0.958,P<0.05).结论 CK17在宫颈组织恶性转化过程中,随着病变程度的加重,阳性表达率逐渐增高,与病变程度呈正相关.CK17可作为高级别CIN和宫颈癌诊断及预测病变进展趋势的标志物.     

子宫颈上皮肉瘤样病变及鳞癌中p53与MDM2表达及相关性

目的 了解子宫颈上皮内瘤样病变（CIN）及鲜癌（SCC）中p53与MDM2表达及相关性。方法 用免疫组化SP法检测MDM2及p53蛋白在正常宫颈上皮、CIN、SCC中的表达,共76例。结果 （1）随着宫颈病变加重,MDM2、p53表达率均渐增高,二者在正常宫颈、CIN、SCC的表达率分别为：MDM2的表达为0、13.64%、44.12%;p53的表达为5.00%、18.18%、47.06%.MDM2、p53在浸润癌组较CIN及正常宫颈组明显增高。（2）MDM2的表达与p53的聚积在统计学上未显示出有相关性。结论 ＭＤＭ２、p53可能参与宫颈癌的发生、发展,对宫颈癌的诊断和治疗具有一定意义。     

Skp2在宫颈癌组织中的表达及其临床意义

目的探讨Skp2在宫颈癌组织中的表达及其与临床病理因素和预后的关系。方法采用免疫组化SP法检测65例宫颈浸润癌（ICC）、20例宫颈上皮内瘤样病变（CIN）中skp2的表达情况,另取60例宫颈正常组织（NCE）作为对照。结果skp2在宫颈癌中的阳性表达率为55．4％,明显高于CIN的25．0％（P=0．017）及正常宫颈组织的6．7％（P=0．000）,差异有统计学意义;半定量分析表明宫颈癌中Skp2的表达与年龄、肿瘤大小、临床分期无明显关系（P〉0．05）,而与肿瘤的病理分级、浸润深度、脉管浸润、淋巴结转移密切相关。Skp2阳性表达组5年生存率（52．78％）明显低于skp2阴性组（68．93％）,Kaplan—Meier生存率分析,Log—rank=8．60,P=0．0034。结论skp2的表达在宫颈癌的发生、发展过程中起重要作用,其表达水平越高提示患者预后越差。Skp2可以作为宫颈癌独立的预后指标。     

SOX17因子在宫颈癌和宫颈上皮内瘤变的表达及意义

目的探讨SOX17因子在宫颈癌组织中的表达及与宫颈病变发生发展的关系。方法采用免疫组织化学SP法,检测60例宫颈癌组织、73例宫颈上皮内瘤变(CIN)和24例正常宫颈组织中SOX17因子的表达。结果 SOX17因子在正常宫颈组织中的表达高于宫颈上皮内瘤变组及宫颈癌组(P<0.05),宫颈上皮内瘤变组高于宫颈癌组(P<0.05);在不同级别宫颈内上皮瘤变的表达差异有统计学意义(P<0.05)。结论 SOX17因子表达下调与宫颈癌变的发生发展有关。     

Bacteria and cancer--antagonisms and benefits

There is considerable historical and recent evidence concerning the antagonisms between acute bacterial infections or their toxins and cancer and allied diseases. These data provide renewed incentives to undertake clinical programmes with mixed bacterial vaccines in many countries at the present time.     

Religiosity and physical and emotional functioning among African American and White colorectal and lung cancer patients

The literature suggests that religiosity helps cope with illness. The present study examined the role of religiosity in functioning among African Americans and Whites with a cancer diagnosis. Patients were recruited from an existing study and mailed a religiosity survey. Participants (N = 269; 36% African American, 56% women) completed the mail survey, and interview data from the larger cohort was utilized in the analysis. Multivariate analyses indicated that in the overall sample religious behaviors were marginally and positively associated with mental health and negatively with depressive symptoms. Among women, religious behaviors were positively associated with mental health and negatively with depressive symptoms. Religiosity was not a predictor of study outcomes for men. Among African Americans, religious behaviors were positively associated with mental health and vitality. Among Whites, religious behaviors were negatively associated with depressive symptoms. These findings suggest a mixed role of religious involvement in cancer outcomes. The current findings may have applied potential in the areas of emotional functioning and depression.     

Renal irradiation and the pharmacology and toxicity of methotrexate and cisplatinum

We used a rat model to study the effects of renal irradiation on the pharmacology of methotrexate (MTX) and cisplatinum (cis-Pt). Unanesthetized rats were given bilateral kidney irradiation (20 Gy in 9 fractions). At 9 months after irradiation, 3% of the animals had died and survivors showed moderately impaired renal function. At 15 months, 30% of the animals had died and survivors showed severely impaired renal function. Some animals were given i.v. MTX 1 week to 15 months after irradiation. In irradiated rats, the area under the MTX plasma clearance curve equaled that of controls through 6 months, and was significantly above controls from 9 months on. Other animals were given i.p. cis-Pt 1 week to 9 months after irradiation. The acute toxicity of cis-Pt was the same in control and irradiated rats when cis-Pt was given immediately before or after irradiation. Beginning 3 months after irradiation there was a progressive increase in cis-Pt toxicity and a simultaneous decrease in urinary platinum excretion. Irradiated animals that survived cis-Pt treatment showed increased radiation nephritis; the greatest effect occurred when cis-Pt was given 3 months or more after irradiation. MTX and cis-Pt clearance decreased when renal dysfunction was first observed and changes in renal function preceded changes in drug clearance and toxicity.     

VEGF及KDR在大肠腺瘤和腺癌中的表达及意义

目的：探讨VEGF和KDR在大肠腺瘤和大肠腺癌中的表达及临床病理特征的关系。方法：大肠腺瘤和大肠腺癌组织标本各100例,采用免疫组织化学染色法检测VEGF和KDR在标本中的表达情况。结果：VEGF和KDR在大肠腺癌组中的阳性表达明显高于大肠腺瘤组（P〈0.05）;在正常大肠黏膜均未见VEGF和KDR表达的阳性染色;VEGF阳性表达组中KDR的阳性表达率为70%,显著高于VEGF阴性表达组中KDR的阳性表达率16%,两组比较有统计学意义（P〈0.01）。结论：大肠腺癌组织中KDR的表达与肿瘤大小、转移情况、浸润深度密切相关;VEGF和KDR在大肠腺瘤中的表达与患者的年龄、性别及分型均无相关性,而与增生程度相关（P〈0.05）。在大肠腺癌患者中VEGF及KDR表达更高,二者具有协同效应。     

Morphine and tumor growth and metastasis

Morphine is an analgesic widely used to alleviate cancer pain. In addition, the perioperative management of pain in cancer surgery patients most often includes opioids. However, there are reports that these drugs may alter cancer recurrence or metastasis. Several mechanisms have been proposed, such as the modulation of the immune response or cellular pathways that control the survival and migratory behavior of cancer cells. The published literature, however, presents some discrepancies, with reports suggesting that opioids may either promote or prevent the spread of cancer. It is of great importance to determine whether opioids, in particular the most widely used, morphine, may increase the risk of metastasis when used in cancer surgery. This review examines the available data on the effects of morphine which influence cancer metastasis or recurrence, including immunomodulation, tumor cell aggressiveness, and angiogenesis, with special emphasis on recently published clinical and laboratory based studies. We further discuss the parameters that may explain the difference between reports on the effects of morphine on cancer.     

肾上腺素能β受体与肿瘤生长及转移

大量研究表明肿瘤细胞可表达β受体，而一些神经递质、药物和社会心理因素可能通过β受体影响肿瘤的生长和转移，β受体激动剂、β受体阻滞剂以及抑郁等社会心理因素可加强或削弱这种作用。这为表达β受体肿瘤的治疗开辟了新的道路，提供了新的治疗靶点。