HPVDNA永生化人宫颈上皮细胞的生长方式与宫颈上？…

目的：研究人乳头瘤病毒（ＨＰＶ）ＤＮＡ永生化人宫颈上皮细胞器官培养的生长特点及将其与体内宫颈上皮内肿瘤（ＣＩＮ）进行比较。方法：先用ＨＰＶ１６和１８型ＤＮＡ转染人宫颈上皮细胞，建立永生化的人宫颈上皮细胞株，再用胶原筏培养方法分析永生化人宫颈上皮细胞在器官培养的生长特点，将其与体内ＣＩＮ的形态进行了比较。结果：人宫颈上皮细胞经ＨＰＶ１６和１８ＤＮＡ转染后，可变成一种永生化细胞。细胞生物学研究显示永生     

p53蛋白在宫颈鳞状上皮内病变与宫颈癌中的过度表达及其与HPV的关系

目的探讨宫颈鳞状上皮内病变（ＳＩＬ）和宫颈癌中抑癌基因ｐ５３蛋白表达水平以及与ＨＰＶ的关系。方法用免疫组化和ＰＣＲ－ＲＦＬＰ方法，对２６８例宫颈石蜡包埋组织（２９例慢性宫颈炎、６８例ＳＩＬ、１７１例宫颈癌）进行了ｐ５３蛋白水平及多型ＨＰＶ检测。结果宫颈癌ｐ５３蛋白的过度表达率及强阳性过度表达率高于ＬＳＩＬ和ＨＳＩＬ，ＨＰＶ１８阳性的ＳＩＬ及宫颈癌ｐ５３蛋白的过度表达率高于ＨＰＶ１６阳性和ＨＰＶ阴性者。结论抑癌基因ｐ５３蛋白过度表达率与宫颈癌的发生发展有关，与ＨＰＶ１８的内在联系尚有待于进一步研究。     

丁酸钠对人乳头状瘤病毒诱导的永生化食管上皮细胞恶性转化的促进作用

目的 在人乳头状瘤病毒（HPV）18E6E7基因诱导人胚食管上皮细胞永生化的基础上,观察高、低剂量丁酸钠在细胞恶性转化过程中的促癌作用。方法 永生化食管上皮细胞SHEE先用高剂量于酸钠（80mmol/L),后用低剂量丁酸钠（5mmol/L)各处理8周,再经无丁酸钠条件继续培养14周。用相差显微镜、免疫组织化学SABC法和流式细胞仪检查细胞形态、增殖和调亡状况;用Hoechst33342和碘化丙啶检查活细胞和死细胞;细胞软琼脂集落形成及移植裸小鼠和严重联合免疫缺陷小鼠检查成瘤性。结果 当细胞暴露在80mmol/L丁酸钠,细胞死亡,只剩少量活细胞。在含5mmol/L丁酸钠培养基中细胞出现第一增殖期;撤去丁酸钠,细胞进入危象期,细胞倍增时间延长,如老化细胞。度过危象期,细胞进入第二增殖期,细胞继续增生和异型增生。在第二增殖期末细胞出现恶变,软琼脂培养有大集落形成,移植裸小鼠和SCID小鼠成瘤。结论 SHEE永生化上皮由丁酸钠诱导的恶性变通过了两个阶段的死亡威胁：高浓度丁酸钠引起细胞死亡,缺乏丁酸钠引起细胞危象。高剂量丁酸钠引起永生化细胞死亡,低剂量引起细胞增殖,说明丁酸钠对体外培养细胞有促恶变作用。     

人乳头状瘤病毒不同型别与宫颈病变的相关性研究

目的探讨人乳头状瘤病毒（ＨＰＶ）不同型别与宫颈病变性质的关系。方法应用ＰＣＲ技术和原位杂交方法对６１例宫颈上皮内瘤（ＣｅｒｖｉｃａｌｉｎｔｒａｅｐｉｔｈｅｌｉａｌＮｅｏｐｌａｓｉａＣＩＮ）和１２例宫颈鳞癌（ＳＣＣ）进行ＨＰＶ６Ｂ／１１、１６、１８ＤＮＡ检测。结果ＰＣＲ检测结果显示ＨＰＶ６、１１主要分布于低度鳞状上皮内病变（６１９％）和一部分ＣＩＮⅡ中（２０％），而在ＣＩＮⅢ和ＳＣＣ中检测不到；ＨＰＶ１６、１８的检出率随ＣＩＮ级别增高而增加，在ＳＣＣ中高达８３３％。原位杂交结果显示在低度鳞状上皮内病变中，地高辛（Ｄｉｇ）标记的ＨＰＶ６Ｂ／１１、１６、１８ＤＮＡ杂交物质在核中均呈细颗粒状，为“游离型”。上述杂交阳性信号形态亦出现于ＣＩＮⅡ的所有ＨＰＶ６Ｂ／１１及部分ＨＰＶ１６、１８型感染中，而ＣＩＮⅢ和宫颈鳞癌及部分ＣＩＮⅡ中，其杂交阳性信号均为非颗粒状的“整合型”。结论低度鳞状上皮内病变是以ＨＰＶ６、１１低危型为主的多型别病毒的繁殖性感染，ＣＩＮⅢ和宫颈鳞癌为ＨＰＶ１６、１８高危型病毒的整合型感染，而在ＣＩＮⅡ中存在着ＨＰＶ６，１１和ＨＰＶ１６，１８的繁殖性感染及ＨＰＶ１６，１８的整合型感染     

人乳头状瘤病毒16型E6E7肿瘤性转化人永生化支气管上皮细胞

目的 探讨人乳头状瘤病毒（ＨＰＶ）１６型Ｅ６Ｅ７片段对人永生化支气管上皮细胞系ＴＲ细胞的作用。方法 将Ｅ６Ｅ７片段构建入逆转录病毒载体,导入ＴＲ细胞,观察生长特性和致瘤性的改变;并用免疫沉淀（ＩＰ）－Ｗｅｓｔｅｒｎ ｂｌｏｔ检测ｐ２７蛋白功能及ＦＡＫ、桩蛋白数量及磷酸化状况,结果 嘌呤霉素抗药性克隆ＴＲ／Ｅ６Ｅ７有Ｅ６Ｅ７的存在和稳定表达;ＴＲ／Ｅ６Ｅ７细胞系细胞生长加快,软琼脂集落形成能力增强,     

女性下生殖道HPV感染和HPV相关的宫颈肿瘤

子宫颈病变是女性最常见的疾患之一.在女性癌瘤中,宫颈癌的发病率仅次于乳腺癌.人乳头状瘤病毒(HPV)感染在宫颈肿瘤的发病机制中起着重要的作用,许多学者关注HPV疫苗的预防和治疗.在女性生殖道HPV传播及继发性感染是局部性的,因此,针对这种局部性传播疫苗的有效性最好能用局部免疫的参数来评价.     

宫颈上皮内肿瘤及宫颈鳞状细胞癌组织中HPV16感染与hTERT、p21waf1和Ki67表达的关系及意义

目的探讨宫颈鳞状细胞癌(SCC)及宫颈上皮内肿瘤(CIN)组织中人乳头瘤病毒(HPV)16感染与端粒酶反转录蛋白(hTERT)、抑癌基因p21waf1和增生抗原Ki67表达的关系及其意义。方法在130例宫颈组织中利用组织芯片技术结合原位杂交技术检测HPV16感染及结合免疫组织化学技术检测hTERT、Ki67、p21waf1的表达。结果(1)HPV16杂交信号阳性率及hTERT、Ki67表达在CINⅡ～Ⅲ级、原位癌、浸润性鳞癌组织中都显著高于正常宫颈组织(P均<0.05),浸润癌也显著高于CIN(P均<0.05),CIN三级之间差异也具统计学意义(P均<0.05)。(2)p21waf1仅在浸润性鳞癌组织中的阳性率显著低于正常宫颈组织(P<0.05),其他组别之间差异无统计学意义(P均>0.05)。(3)HPV16感染及Ki67表达与hTERT表达均呈正相关(P<0.05,r=0.339;P<0.05,r=0.398);HPV16感染、hTERT及Ki67表达与p21waf1表达均呈负相关(P<0.05,r=0.337;P<0.05,r=0.248;P<0.05,r=0.446);HPV16感染与Ki67表达无相关性(P>0.05)。结论宫颈上皮内肿瘤及宫颈鳞状细胞癌组织中hTERT、p21waf1、Ki67表达的改变可能与HPV16感染有关,且互相作用,共同影响CIN的发展及宫颈鳞癌的发生。这些指标综合分析可能为阐明HPV16的恶性转化机制以及为提高宫颈鳞癌及其癌前病变诊断率提供参考依据。组织芯片技术是高效的研究基因及其表达产物的技术平台。     

p53蛋白在宫颈鳞状上皮内病变与宫颈癌中的过度表达及其与H…

目的 探讨宫颈鳞状上皮内病变（ＳＩＬ）和宫颈癌中抑癌基因ｐ５３基因表达水平以及与ＨＰＶ的关系。方法 用免疫组化和ＰＣＲ－ＲＦＬＰ方法，对２６８例宫颈石蜡包埋组织（２９例慢性宫颈炎、６８例ＳＩＬ、１７１例宫颈癌）进行了ｐ５３蛋白水平及多型ＨＰＶ检测。结果 宫颈癌ｐ５３蛋白的过度表达率及强阳性过度表达率高于ＬＳＩＬ，ＨＰＶ１８阳性的ＳＩＬ及宫颈癌ｐ５３蛋白的过度表达率高于ＨＰＶ１６阳性和ＨＰＶ阴性者。     

宫颈上皮内瘤变及宫颈鳞癌中cyclin D1、Ki-67的表达及其意义

目的： 检测细胞周期素D1（cyclin D1）、增殖细胞核抗原（Ki-67）在人乳头瘤病毒（HPV）感染患者宫颈上皮内瘤样病变（CIN）及宫颈鳞癌中的表达及其相关性,研究其在CIN及宫颈鳞癌发生及发展过程中的作用。方法: 研究组HPV阳性病理确诊CINⅠ17例、CINⅡ19例、CINⅢ23例、宫颈鳞癌23例,对照组HPV阳性病理确诊柱状上皮异位22例。应用免疫组化S-P法检测宫颈病变组织中cyclin D1、Ki-67蛋白的表达,杂交捕获二代检测宫颈分泌物中HPV感染的情况。结果: (1)Cyclin D1在5组宫颈组织细胞的细胞核内均有表达,CINⅢ组、宫颈鳞癌组与对照组比较差异显著（P<0.05）,CINⅢ组、宫颈鳞癌组与CINⅠ组比较差异显著（P<0.05）,宫颈鳞癌组与CINⅡ组比较差异显著（P<0.05）。(2)Ki-67在5组宫颈组织细胞的细胞核内均有表达,对照组与CINⅢ组比较差异显著（P<0.05）,对照组与宫颈鳞癌组比较差异显著（P<0.05）,CINⅠ组与宫颈鳞癌组比较差异显著（P<0.05）,CINⅡ组与宫颈鳞癌组比较差异显著（P<0.05）。(3)Cyclin D1、Ki-67在CIN及宫颈鳞癌中的表达强度呈正相关关系 （P<0.05）。结论: Cyclin D1和Ki-67在CIN和宫颈鳞癌发生发展及细胞增殖活动中起一定的作用;两者在CIN和宫颈鳞癌的发生发展中可能发挥协同作用。     

宫颈上皮内瘤样病变135例三年随访分析

目的 探讨宫颈薄层细胞学检查（TCT）和HPV检测联合筛查在宫颈上皮内瘤样病变（CIN）诊治和随访中的作用.方法 对2006年进行细胞学检查异常,且组织病理学诊断为宫颈上皮内瘤样病变的患者共135人进行病例回顾性总结,并在2006年至2009年进行连续随访,对其进行TCT和HPV检测.结果 （1）73例高危型HPV阳性的患者中,15例为ASCUS,3例为ASCUS-H,28例为LSIL,27例为HSIL;17例为CINⅠ,24例为CINⅡ,30例为CINⅢ,2例为CINⅢ可疑早侵.（2）3次随访中未出现CIN复发或病理升级情况.结论 HPV检测联合宫颈细胞学检查法在宫颈上皮内瘤样病变的诊治和随访中具有重要的意义.     

Comparison of cervical and blood T-cell responses to human papillomavirus-16 in women with human papillomavirus-associated cervical intraepithelial neoplasia

Human papillomaviruses (HPVs) are obligate epithelial pathogens and typically cause localized mucosal infections. We therefore hypothesized that T-cell responses to HPV antigens would be greater at sites of pathology than in the blood. Focusing on HPV-16 because of its association with cervical cancer, the magnitude of HPV-specific T-cell responses at the cervix was compared with those in the peripheral blood by intracellular cytokine staining following direct ex vivo stimulation with both virus-like particles assembled from the major capsid protein L1, and the major HPV oncoprotein, E7. We show that both CD4(+) and CD8(+) T cells from the cervix responded to the HPV-16 antigens and that interferon-gamma (IFN-gamma) production was HPV type-specific. Comparing HPV-specific T-cell IFN-gamma responses at the cervix with those in the blood, we found that while CD4(+) and CD8(+) T-cell responses to L1 were significantly correlated between compartments (P = 0.02 and P = 0.05, respectively), IFN-gamma responses in both T-cell subsets were significantly greater in magnitude at the cervix than in peripheral blood (P = 0.02 and P = 0.003, respectively). In contrast, both CD4(+) and CD8(+) T-cell IFN-gamma responses to E7 were of similar magnitude in both compartments and CD8(+) responses were significantly correlated between these distinct immunological compartments (P = 0.04). We therefore show that inflammatory T-cell responses against L1 (but not E7) demonstrate clear compartmental bias and the magnitude of these responses do reflect local viral replication but that correlation of HPV-specific responses between compartments indicates their linkage.     

多重HPV感染与宫颈病变的临床分析

目的探讨多重人乳头状瘤病毒（HPV）感染与宫颈病变之间的关系。方法采用核酸分子快速导流杂交基因芯片技术,对2008年7月至2010年7月在东莞市太平人民医院就诊且有病理确诊的332例女性患者（实验组）及100例正常妇女（对照组）进行HPV基因分型检测,比较不同宫颈病变类型与HPV多重感染的关系。结果 332例宫颈病变中HPV感染率为78.61%（261/332）,多重感染率为58.13%（168/289）,其中以二重感染为主,最常见的二重感染类型为HPV16、58及HPV52、58,以HPV16型感染多见;多重HPV感染比例随病变级别增加逐渐上升,由对照组的17.86%升高到宫颈鳞癌组的100%,各病变组与对照组相比差异有统计学意义（P〈0.05）。结论 HPV多重感染与宫颈病变的发生有关,可作为宫颈病变早诊早治的有效指标之一。     

宫颈上皮内瘤变及其治疗对妊娠的影响

宫颈鳞状上皮内瘤变是一种和HPV感染有关的宫颈癌前病变。根据病变程度分为低度和高度鳞状上皮内病变,其中低度病变包括HPV感染和C IN1,高度病变包括C IN2~3。HPV感染和宫颈上皮内瘤变是一种生育年龄妇女常见的妇科疾病,HPV感染、宫颈病变本身及其治疗对妊娠的影响倍受关注。HPV感染在妊娠期间可能增加,经阴道分娩者新生儿暴露于HPV的机会增多,尚不能下结论对所有HPV感染者均采用剖宫产的分娩方式。妊娠期间发现C IN1,可以观察并产后随访。如果为C IN2~3,妊娠可能不会加重病变程度,但对阴道镜检查不满意者或高度怀疑浸润癌者应在孕期明确诊断,可于妊娠中期行宫颈锥切术。妊娠中期行宫颈锥切术可能使剖宫产率增加。C IN保守治疗对于患者受孕能力无显著的影响;宫颈冷刀锥切及LEEP锥切可能增加早产率,早产率的增加可能和胎膜早破的发生有关。     

Distribution of human papillomavirus genotypes in cervical intraepithelial neoplasia and invasive cervical cancer in Canada

Infection with high‐risk human papillomavirus (HPV) causes cervical intraepithelial neoplasia (CIN) and invasive cervical cancer (ICC). The distribution of HPV types in cervical diseases has been previously described in small studies for Canadian women. The prevalence of 36 HPV genotypes in 873 women with CIN and 252 women with ICC was assessed on cervical exfoliated cells analyzed with the Linear Array (Roche Molecular System). HPV16 was the most common genotype in CIN and ICC. The seven most frequent genotypes in order of decreasing frequency were HPV16, 51, 52, 31, 39, 18, and 56 in women with CIN1, HPV16, 52, 31, 18, 51, 39, and 33 in women with CIN2, HPV16, 31, 18, 52, 39, 33, and 58 in women with CIN3, and HPV16, 18, 45, 33, 31, 39, and 53 in women with ICC. HPV18 was detected more frequently in adenocarcinoma than squamous cell carcinoma (P = 0.013). Adjustment for multiple type infections resulted in a lower percentage attribution in CIN of HPV types other than 16 or 18. The proportion of samples containing at least one oncogenic type was greater in CIN2 (98.4%) or CIN3 (100%) than in CIN1 (80.1%; P < 0.001 for each comparison). Multiple type infections were demonstrated in 51 (20.2%) of 252 ICC in contrast to 146 (61.3%) of 238 women with CIN3 (P < 0.001). Adjusting for multiple HPV types, HPV16 accounted for 52.1% and HPV18 for 18.1% of ICCs, for a total of 70.2%. Current HPV vaccines should protect against HPV types responsible for 70% of ICCs in Canadian women. J. Med. Virol. 83:1034–1041, 2011. © 2011 Wiley‐Liss, Inc.     

Genotyping of human papillomavirus in cervical intraepithelial neoplasia in a high-risk population

Infection with the human papillomavirus (HPV) is responsible for 99.7% of cervical cancers, the second most prevalent neoplasia in women worldwide and the fifth leading cause of death by cancer in this population. In Chile, the incidence rate is 14.4 cases per 100,000 women per year and it is considered a significant public health problem. The natural history of cervical cancer begins gradually from low-grade and high-grade squamous intraepithelial lesions to an invasive disease. In this study the frequency of HPV types was determined by HPV genotyping with reverse line blot hybridization in 200 cytobrushes of women with preneoplastic lesions in a high-risk population. HPV DNA was found in 89% of the lesions (83.3% of low-grade squamous intraepithelial lesions and 93.6% of high-grade squamous intraepithelial lesions). Multiple HPV infections were found in 14.4% and 15.5% of low- and high-grade lesions, respectively. HPV 16 was the most frequent genotype in single infections, followed by HPV 18. These results show that most of the preneoplastic lesions of the cervix (60%) were associated with HPV 16 and/or HPV 18, supporting the implementation of an HPV vaccination program in this high-risk population.     

Prevalence and genotype distribution of human papillomavirus in women with cervical cancer or cervical intraepithelial neoplasia in Henan province,central China

To evaluate the prevalence of human papillomavirus (HPV) infection and its genotype among women with cervical lesions in Henan Province, central China. A total of 1317 cervical scrapes from patients with cervical intraepithelial neoplasia 1 (CIN1) (n = 91), CIN2/3 (n = 466), and cervical cancer (CC; n = 760) were collected from 2013 to 2018, and then tested for HPV genotypes using polymerase chain reaction followed by flow-through hybridization assay. The prevalence of HPV was 62.64% for patients with CIN1, 86.91% for patients with CIN2/3%, and 89.21% for patients with CC. In total, the HPV prevalence was 86.56%, and the most common HPV type was HPV16 (58.77%) followed by HPV58 (10.33%), 18 (7.67%), 52 (6.61%), and 33 (5.54%). In this study, the high-risk HPV cumulative attribution rate of nine-valent vaccine coverage was markedly higher than that of bivalent or quadrivalent vaccine coverage in each histopathological category or overall (P < .001). Single HPV infection was the main infection category in each histopathological diagnosis, and the total infection rate was 65.83% (867/1317; P < .001). The prevalence of HPV16 or single HPV infection increased with the severity of cervical lesions (P < .001). HPV16, 58, 18, 52, and 33 may be predominant high-risk factors for cervical lesions in Henan Province. The nine-valent prophylactic HPV vaccine is more effective than a bivalent or quadrivalent vaccine for protecting women from CC in the region.