MIF、MMP-9在宫颈鳞癌组织中的表达及与微血管密度的关系

目的:分析宫颈组织上皮内瘤样病变(cervical intraepithelial neoplasm,CIN)和宫颈鳞癌(squamous carcinoma of cervix,scc)中巨噬细胞移动抑制因子(macrophage migration inhibitory factor,MIF)和金属蛋白酶-9(MMP-9)与微血管密度(microvessel density,MVD)的表达情况及意义.方法:选择SCC组织标本51份、CIN标本41份,正常宫颈组织(normal cervical epithelium,NCE)标本32份,采用免疫组化SP法检测各组MIF和MMP-9的表达和MVD(CD44标记)情况.结果:SCC、CIN组中MIF和MMP-9阳性率和MVD值均明显高于对照NCE组(P＜0.05),但MIF阳性表达在CIN组和SCC组中差异无统计学意义(P＞0.05).MIF、MMP-9在SCC组织中的阳性表达均与组织分化程度、有无淋巴结转移相关,但与临床分期无关(P＞0.05),在SCC组织中二者表达呈正相关.SCC组中MIF和MMP-9阳性者的MVD值明显高于其阴性者(P＜0.05),在SCC淋巴结转移组织中MIF和MMP-9阳性者的MVD值明显高于无淋巴结转移组(P＜0.05),MIF和MMP-9的表达与MVD值存在显著正相关性(P＜0.05).结论:MIF和MMP-9在SCC的发生、发展、浸润及转移中起重要作用.SCC组织学分化越差,MIF和MMP-9阳性表达率越高及MVD值越高,且MIF和MMP-9的表达呈正相关.提示二者联合检测对评估SCC严重程度有一定的参考价值.     

宫颈癌组织Survivin与 VEGF表达及其生物学意义的探讨

目的:探讨宫颈癌组织存活素(Survivin)与血管内皮生长因子(VEGF)的表达与宫颈癌临床特征的关系以及两者的相关性.方法:采用免疫组化SP法检测73例宫颈癌,25例宫颈上皮内瘤样病变(CIN)和20例慢性宫颈炎组织Survivin和VEGF的表达水平.结果:宫颈癌组织Survivin和VEGF阳性表达率分别为75.3％和78.1％,慢性宫颈炎组分别为5.0％和10.0％,CIN组分别为48.0％和52.0％.从慢性宫颈炎组到宫颈癌组,Survivin和VEGF表达率逐渐升高,P＜0.05.Survivin和VEGF的表达与宫颈癌临床分期及淋巴结转移相关.Survivin表达与VEGF表达呈正相关,r=0.738,P＜0.01.结论:Survivin和VEGF在宫颈癌组织中的表达情况在一定程度上反映宫颈癌的局部浸润活性和转移潜能,与宫颈癌的转移、分期及预后密切相关.并在宫颈癌的发生,发展中可能存在协同作用.     

宫颈病变组织Survivin的表达及其临床意义

目的:探讨Survivin在宫颈鳞状上皮细胞癌(CSCC)和宫颈上皮内瘤变(CIN)组织中的阳性表达及相关性.方法:用免疫组织化学(IHC)SP法检测92例CSCC及癌旁正常宫颈组织和40例CIN组织中Survivin 的蛋白表达情况,并对数据进行统计分析.结果:CSCC组中Survivin阳性表达率为78.26%(72/92),CIN Ⅰ、CINⅡ和CINⅢ组分别为26.67%(4/15)、64.28%(9/14)和72.72%(8/11);正常宫颈鳞状上皮组织Survivin阳生表达率为2.17%(2/92).宫颈鳞癌组、CINⅡ、CINⅢ组Survivin的阳性表达明显高于CIN Ⅰ组及正常宫颈组织,P＜0.01;CIN Ⅰ与CINⅡ、CINⅢ组之间Survivin表达差异有统计学意义,P＜0.05;Survivin的表达在各组均与年龄无关.结论:Survivin的阳性表达与宫颈癌的进展、组织学分级和临床分期有关,而与年龄无关.宫颈癌临床分期越晚、细胞分化程度越低,Survivin的阳性表达率越高.     

p-PKB和NF-κBp65在宫颈癌组织中的表达及意义

目的 探讨宫颈癌组织中磷酸化蛋白激酶B(p-PKB)和核转录因子-κB p65(NF-κBp65)蛋白的表达及意义.方法 采用免疫组化S-P法检测51例宫颈癌组织、36例宫颈上皮内瘤变(CIN)组织和20例正常宫颈组织中p-PKB和NF-κBp65蛋白的表达,并分析两者与宫颈癌临床病理参数的关系.结果 p-PKB蛋白在宫颈癌组织中的阳性表达率 (74.5%)明显高于CIN组(52.8%)和正常宫颈组(15.0%)(P＜0.05),p-PKB蛋白的表达随宫颈癌分化程度下降、临床分期升高而升高(P＜0.05),在无淋巴结转移的宫颈癌组织中的表达明显低于有淋巴结转移者(P＜0.05).NF-κBp65蛋白在宫颈癌组织中的阳性表达率(49.0%)明显高于CIN组(30.6%)和正常宫颈组(16.7%)(P＜0.05),NF-κBp65蛋白的表达随宫颈癌分化程度下降、临床分期升高而升高(P＜0.05),在无淋巴结转移的宫颈癌组织中的表达明显低于有淋巴结转移者(P＜0.05).结论p-PKB、NF-κBp65蛋白在宫颈癌组织中过表达与宫颈癌的发生发展有关,p-PKB蛋白可能通过作用于其下游NF-κBp65蛋白,促进宫颈癌的恶性转化.     

DYRK1B蛋白在宫颈癌组织中的表达及意义

目的 探讨双特异性酪氨酸磷酸化调节激酶1B(DYRK1B)蛋白在宫颈癌组织中的表达情况及其临床意义.方法 选取84例宫颈癌病理组织标本(宫颈癌组)、40例宫颈上皮内瘤变(CIN)组织标本(CIN组)、40例正常宫颈组织标本(对照组),采用免疫组织化学染色方法检测3组标本中DYRK1B蛋白的表达情况,并探讨DYRK1B蛋白表达与宫颈癌病理特征的关系.结果 宫颈癌组中DYRK1B蛋白的阳性表达率为72.62%,高于CIN组中的22.50%和对照组的12.50%(P﹤0.05);CIN组和对照组中的DYRK1B蛋白的阳性表达率比较,差异无统计学意义(P﹥0.05);不同临床分期、组织浸润深度、分化程度、淋巴结转移情况的宫颈癌组织中DYRK1B蛋白的阳性表达率比较,差异均有统计学意义(P﹤0.05);而不同年龄、病理学类型的宫颈癌组织中DYRK1B蛋白的阳性表达率比较,差异均无统计学意义(P﹥0.05).结论 DYRK1B蛋白在宫颈癌组织中表达上调,可能与宫颈癌的发生发展有关.     

实时荧光定量 PCR检测早期宫颈癌及前哨淋巴结VEGF-C及VEGF-D mRNA表达

[目的]研究血管内皮生长因子(VEGF)-C及VEGF-D mRNA在早期宫颈癌和前哨淋巴结中的表达水平.[方法]收集51例早期官颈癌患者宫颈癌组织、癌周组织、前哨转移淋巴结、非前哨无转移淋巴结、正常区域组织.透射电镜观察淋巴转移情况,实时荧光定量PCR检测VEGF-C及VEGF-D mRNA的表达量,并研究其与宫颈癌临床病理各因素之间的关系.[结果]透射电镜显示宫颈癌周区可见到淋巴管增生.VEGF-C及VEGF-D mRNA在宫颈癌内、癌周、前哨转移淋巴结中的表达均显著高于正常宫颈组织和非前哨无转移淋巴结(P＜0.05).VEGF-C及VEGF-D mRNA在宫颈癌组织中的表达在不同淋巴结转移、淋巴管侵犯、肿瘤浸润深度下差异有统计学意义(P均＜0.05),而不同年龄、临床分期、病灶大小、组织分化、病理类型之间的差异无统计学意义(P均＞0.05).[结论]VEGF-C及VEGF-D在早期宫颈癌的淋巴结转移中起重要作用,可能成为预测宫颈癌淋巴结转移的关键指标,有希望成为抑制宫颈癌淋巴结转移的治疗靶点.     

VEGF-C在宫颈鳞癌组织中的表达及临床意义

目的检测血管内皮生长因子C（VEGF-C）在正常宫颈、宫颈上皮内瘤变（CIN）及宫颈鳞癌组织中的表达,探讨VEGF-C与宫颈癌发生发展、淋巴结转移的关系。方法采用免疫组织化学S-P法,检测22例正常宫颈上皮、63例CIN、45例宫颈鳞癌组织中VEGF-C的表达。结果VEGF-C在正常宫颈黏膜上皮、CIN及宫颈鳞癌组织中的表达依次增高,三者之间相比,差异有统计学意义（P〈0．05）。伴有淋巴结转移的宫颈癌组织中VEGF-C的表达明显高于无淋巴结转移病例（P〈0．01）。VEGF-C在低分化鳞癌组织中的表达明显高于中高分化鳞癌组织（P〈0．05）,但与临床分期无关。结论VEGF-C蛋白表达与宫颈鳞癌发生发展及淋巴转移有关。     

VEGF IL-6在宫颈癌中的表达及其二者的相互关系

目的:对不同类型的宫颈癌组织中血管内皮生长因子(vascular endothelial grown factor,VEGF)、白细胞介素-6(Interleukin-6,IL-6)的表达进行定量分析,以进一步探讨VEGF、IL-6在宫颈癌发病中的作用.方法:选取宫颈癌石蜡组织标本50例和10例正常宫颈组织作对照,通过流式细胞检测方法测定VEGF、IL-6的相对含量.结果:VEGF在鳞癌、腺癌中的表达明显高于正常宫颈组织(P＜0.01,P＜0.01),且VEGF在腺癌中的表达明显高于在鳞癌中的表达(P＜0.05);VEGF在晚期癌中的表达明显高于早期癌中的表达(P＜0.01).IL-6在淋巴结转移者的表达明显高于无淋巴结转移者(P＜0.05),在中低分化组的表达明显高于高分化组的表达(P＜0.01),＜40岁者分别与40～59岁者、≥60岁者比较随年龄增加IL-6增高,统计学上有显著意义(P＜0.01,P＜0.01).结论:VEGF、IL-6与宫颈癌的发生有关,并可作为判断宫颈癌恶性程度和评价预后的指标.     

EGFR和自噬标记蛋白Beclin1在宫颈癌组织中的表达及意义

目的 分析表皮生长因子受体1 (EGFR)和自噬标记蛋白Beclin1在宫颈癌组织中的意义.方法 子宫颈癌患者癌组织标本50例,行全子宫切除术的正常组织标本20例,宫颈上皮内瘤变(CIN)病变组织标本19例,比较3组标本中EGFR和Beclin1的表达阳性情况、宫颈癌临床资料与EGFR和Beclin1表达的关系.结果 EGFR表达阳性率以宫颈癌组最高,其次为CIN组,正常对照组最低(P＜0.05),Beclin1的表达阳性率以宫颈癌组最低,其次为CIN组,正常对照组最高(PP ＜0.05),Beclin1表达阳性率与是否发生淋巴结转移显著相关(P＜0.05).结论 EGFR和Beclin1表达与宫颈癌的发生发展有关,且Beclin1表达与是否发生淋巴结转移密切相关.     

基质金属蛋白酶-2及其组织抑制物在宫颈癌中的表达

目的研究基质金属蛋白酶-2(MMP-2)及其组织抑制物(TIMP-2)在宫颈癌中的表达及其与宫颈癌生物学行为的关系.方法采用免疫组化S-P法对57例宫颈癌组织、17例正常宫颈组织MMP-2、TIMP-2进行检测,并进行x2检验及等级相关分析.结果免疫组化结果显示MMP-2、TIMP-2在宫颈癌组织中表达极显著高于正常宫颈组织(P＜0.01).MMP-2、TIMP-2在宫颈癌不同组织学类型中表达无显著性差异(P＞0.05).MMP-2表达随宫颈癌病理分级、临床分期的升高,淋巴结转移的发生而上调,但无显著性差异(P＞0.05).TIMP-2在宫颈癌临床分期Ⅱb～Ⅳ期的阳性表达显著低于Ⅰ～Ⅱa期(P＜0.05),有淋巴结转移者极显著低于无淋巴结转移者(P＜0.01).TIMP-2随病理分级升高其表达下调,但无显著性差异(P＞G.05).TIMP-2与MMP-2的表达显著负相关.结论MMP-2、TIMP-2,尤其是MMP-2/TIMP-2比率失衡在判断宫颈癌侵袭性、估计其预后中有一定意义.     

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。