p16INK4A、p53、Ki-67及ER在宫颈病变组织中的表达及其相关性研究

目的 探讨p16INK4A、p53、Ki-67及雌激素受体(ER)在不同程度宫颈病变中表达及相关性.方法 采用SP法检测宫颈鳞状细胞癌、宫颈上皮内瘤变(CIN)、尖锐湿疣及正常宫颈组织中p16INK4A、p53、Ki-67及ER蛋白的表达.结果 p16INK4A、p53、Ki-67及ER在宫颈鳞癌组中的阳性率分别为100%、86.4%、86.4%及4.6%;在CIN Ⅲ中为92.5%、75.0%、100%、20.0%;在CIN Ⅱ中为90.5%、64.3%、100%及23.9%;在CINⅠ中为71.8%、43.6%、100%、79.5%;在尖锐湿疣组中为39.0%、43.9%、26.9%、61.0%.p16INK4A在宫颈鳞癌、CIN Ⅲ、Ⅱ组中,以强阳性表达为主;尖锐湿疣组仅为弱阳性表达.Ki-67在宫颈鳞癌、CINⅢ组中,以强阳性表达为主.宫颈鳞癌、CINⅢ、Ⅱ、Ⅰ、尖锐湿疣中p16INK4A、p53、Ki-67、ER阳性表达率与对照组比较差异有高度显著性(P＜0.05).结论 p161NK4A、p53蛋白高表达与宫颈鳞癌、CIN的发生发展密切相关;p16INK4A、p53、Ki-67阳性率与宫颈病变严重程度呈正相关,ER的阳性率与其呈负相关.     

p16~(INK4A)、P14~(ARF)蛋白在宫颈鳞癌中的表达及意义

目的:研究p16INK4A和p14ARF蛋白在各级宫颈病变中的表达特征和临床意义。方法:采用免疫组织化学S-P法对95例宫颈鳞癌(SCC)标本、80例宫颈上皮内瘤变(CIN)标本和45例正常宫颈标本进行p16INK4A和p14ARF蛋白的检测。结果:按正常宫颈-CINⅠ-CINⅡ-CINⅢ-宫颈鳞癌的顺序,p16INK4A及p14ARF的阳性率逐渐升高,具显著性差异(P<0.01),p16INK4A和p14ARF在各级宫颈病变中的表达呈正相关(r=1)。宫颈鳞癌组织中,p16INK4A、p14ARF在临床Ⅱ期中的阳性率(分别为98.3%、96.6%)均高于临床Ⅰ期的阳性率(分别为83.8%、78.4%),差异有显著意义(P1=0.025,P2=0.013);随着病理分级由Ⅰ级→Ⅲ级,p16INK4A、p14ARF的阳性率从低到高,呈正相关(r=1);p16INK4A、p14ARF与淋巴结转移无关(P>0.05)。结论:p16INK4A和p14ARF蛋白的阳性表达与宫颈疾病的严重程度密切相关,在宫颈鳞癌的形成及进展中起重要作用,p16INK4A和p14ARF蛋白基因有可能成为预测宫颈鳞癌发生及病程进展的生物学检测指标。     

细胞块技术检测宫颈脱落细胞p16INK4A表达对评价宫颈病变的意义

目的探讨将细胞块技术应用于宫颈细胞学诊断并检测宫颈脱落细胞p16INK4A表达,对评价宫颈病变的意义.方法采用链霉素抗生物-过氧化物酶(SP)法,检测79例细胞块上的宫颈脱落细胞及相应的宫颈活检组织中p16INK4A表达.结果在宫颈脱落细胞中,p16INK4A在正常、未明确意义的不典型鳞状细胞(ASCUS)、低度鳞状上皮内病变(LSIL)、高度鳞状上皮内病变(HSIL)、鳞状细胞癌(SCC)阳性表达率分别为0%、18.18%、46.43%、89.66%、100%.在相应活检组织中,p16INK4A在宫颈炎、CINⅠ、CINⅡ、CINⅢ、SCC中阳性表达率分别为0%、61.90%、87.50%、100%、100%.p16INK4A在宫颈脱落细胞和组织中表达的符合率为87.34%,宫颈脱落细胞p16INK4A免疫组化染色使检出宫颈高度病变的敏感性提高了21.95%.结论细胞块技术可用于宫颈细胞学诊断,检测宫颈脱落细胞p16INK4A表达可以提高宫颈高度病变的检出率,减少漏诊率.     

HPV16感染的宫颈鳞癌中微小染色体维持蛋白-5和P16~(INK4A)表达的研究

目的 探讨微小染色体维持蛋白-5(MCM5)与P16~(INK4A)在HPV16感染的宫颈鳞癌中表达及意义。方法 采取实时荧光定量PCR及免疫组化,测定存在HPV16感染的正常宫颈、CIN 1、CIN 2/3及宫颈鳞癌组织中MCM5、P16~(INK4A)的mRNA、蛋白表达情况。结果 (1)MCM5 mRNA及蛋白在HPV16感染的不同程度宫颈病变组织中表达趋势一致,随CIN程度的增加表达增高。MCM5 mRNA及蛋白在鳞癌中表达显著较各级别上皮内病变及正常组织高(P0.01)。MCM5蛋白的表达和年龄无关联(P0.05);与病理分级、临床分期相关(P0.01);(2)不同程度宫颈病变中P16~(INK4A)mRNA、蛋白表达趋势一致,随CIN程度增加表达增高。P16~(INK4A) mRNA及蛋白在鳞癌中的表达明显高于正常及CIN 1组织(P0.01);和CIN2/3之间差异无统计学意义(P0.05)。P16~(INK4A)蛋白在宫颈癌中的表达和患者年龄及临床分期没有关联(P0.05);和病理分级有关(P0.01);(3)MCM5和P16~(INK4A)蛋白表达呈正相关(r=0.497,P0.01)。结论 宫颈鳞癌中MCM5和P16~(INK4A)存在高表达,可能与其发生、进展相关。MCM5可较好的反映宫颈的恶性增生,与P16~(INK4A)联合检测对于完善CIN分级及预后的判断具有一定的参考价值。     

两种筛查宫颈肿瘤方法的比较:ELISA检测宫颈脱落细胞p16~(INK4a)蛋白与FQ-PCR检测8种共用型HPV DNA

目的:探讨用ELISA方法检测p16INK4a蛋白在宫颈脱落细胞的表达,筛查宫颈癌。方法:选取宫颈组织活检标本1523例,活检前用棉拭子从标本中获取宫颈脱落细胞。用荧光定量聚合酶链反应(FQ-PCR)法检测宫颈活检组织中8种亚型HR-HPV DNA,用ELISA方法检测宫颈脱落细胞中p16INK4a蛋白的表达。结果:HR-HPV DNA阳性率在CINⅠ、Ⅱ、Ⅲ及宫颈癌中,分别为91.9%,92.8%,94.4%,91.7%,其阳性率与宫颈病变严重程度无显著相关(P=0.893);非肿瘤性病变人群HR-HPV DNA阳性率16.3%;FQ-PCR方法的特异性83.7%。ELISA方法检测宫颈脱落细胞中p16INK4a表达用于筛查宫颈癌及CIN的总体敏感性和特异性分别为87.4%和92.4%,且宫颈病变级别越高,p16INK4a表达越强(r=0.773,P0.001)。结论:FQ-PCR检测HR-HPV DNA用于筛查宫颈癌及CIN,敏感度高但特异性较低;ELISA检测p16INK4a蛋白表达具有较高的灵敏度和特异性,有望成为宫颈癌新的筛查方法在临床推广使用。     

新疆维、汉族妇女宫颈病变中p14~(ARF)表达及其与HPV感染的关系

目的:探讨p14ARF在新疆维、汉族妇女宫颈病变的表达情况及其与HPV感染的关系。方法:根据病理诊断结果,将维、汉族妇女宫颈病变组织各120例,分为慢性炎症组、CINⅠ组、CINⅡ~Ⅲ组及宫颈鳞癌组,每组各30例。免疫组化SP法检测p14ARF表达,PCR-反向点杂交法检测HPV分型。结果:不同级别宫颈病变组织中p14ARF表达差异显著(P0.05),且随着病变程度加重而增加。p14ARF在宫颈病变组织中的表达无民族差异(P0.05)。维、汉族宫颈病变的HPV阳性率无显著差异(51.7%vs 54.2%,P0.05)。随着宫颈病变程度的加重,HPV阳性率增高(P0.05)。HPV阳性宫颈病变组织中p14ARF蛋白阳性表达率显著高于HPV阴性病变组织(P0.05),且p14ARF蛋白表达与HPV感染呈正相关(r=0.480,P0.05)。结论:p14ARF蛋白在宫颈病变及癌变中的表达异常可能与HPV感染有关;p14ARF在宫颈病变组织中的表达在民族间无差异。     

高迁移率蛋白A2在不同宫颈病变中的表达及意义

目的探讨高迁移率蛋白A2(HMGA2)在不同宫颈病变组织中的表达及其临床意义,了解其与宫颈人乳头瘤病毒(HPV)感染的关系。方法免疫组织化学法检测无锡市第三人民医院2005至2007年30例正常宫颈组织、19例低级别上皮内瘤样病变宫颈组织、16例高级别上皮内瘤样病变宫颈组织、13例宫颈鳞癌组织中HMGA2蛋白的表达,原位杂交检测各组织中HPV感染的情况,分析HMGA2蛋白表达与HPV感染在宫颈病变组织中的相关性。结果正常宫颈组织、CINⅠ级、CINⅡ~Ⅲ级和宫颈浸润性鳞癌组织中,HMGA2蛋白的阳性表达率分别为26.67%、21.05%、68.75%和76.92%。CINI与正常宫颈组织阳性表达率比较,差异无统计学意义;CINⅡ~Ⅲ级、宫颈浸润性鳞癌组织与正常宫颈组织阳性表达率比较,差异有统计学意义(P=0.011,P=0.006)。宫颈高级别上皮内瘤样病变和宫颈癌组织具有较高的HPV感染率,HPV感染与否和HMGA2的表达两者之间未发现统计学相关性。结论HMGA2高表达于高级别宫颈上皮内瘤样病变组织和宫颈癌组织,这可能是宫颈病变的一个早期事件。HMGA2的表达与宫颈HPV感染两者没有相关性,HMGA2可能是...     

新疆地区维汉妇女宫颈病变组织中Survivin与p16~(INK4a)表达的研究

目的:探讨新疆地区维汉妇女宫颈疾病及其癌变组织中Survivin蛋白与p16INK4a蛋白的表达及意义。方法:采用免疫组化SP法,检测240例新疆地区维汉妇女宫颈病变组织中Survivin蛋白和p16INK4a蛋白的表达。维汉妇女各120例,依据病理诊断结果分为4组,非瘤变组(正常及慢性炎症组)30例,CINⅠ组30例,CINⅡ～Ⅲ组30例,宫颈鳞癌组30例。结果:宫颈病变组织中Survivin与p16INK4a蛋白在维、汉族之间的表达差异无显著性(P>0.05);随着宫颈病变程度的上升,不同组别之间Survivin与p16INK4a蛋白的表达有显著差异(P<0.05),但在CINⅡ～Ⅲ组与宫颈鳞癌组之间的表达无统计学意义(P>0.05)。结论:Survivin蛋白和p16INK4a蛋白表达与宫颈疾病及其癌变的发生关系密切,呈正相关;Survivin蛋白和p16INK4a蛋白在新疆地区维汉妇女宫颈病变及其癌变中表达不存在民族差异。     

p16~(INK4a)在液基细胞学筛查宫颈病变中高危人群的临床价值

目的:利用液基细胞学标本探讨p16INK4a在宫颈癌前病变及宫颈癌中的表达。方法:选取104例经活检证实的TCT阳性病例剩余标本,包括9例非典型鳞状细胞-意义不明(ASC-US)、54例低度鳞状上皮内病变(LSIL)、4例非典型鳞状细胞-不除外上皮内高度病变(ASC-H)、33例高度鳞状上皮内病变(HSIL)和4例鳞状上皮细胞癌(SCC),制作液基薄片进行p16INK4a免疫细胞化学检测,同时用基因杂交捕获法Ⅱ(HC-Ⅱ)检测高危人乳头瘤病毒(HR-HPV)DNA,探讨病毒负荷量与宫颈病变级别的关系。结果:p16INK4a在ASC-US、LSIL、ASC-H、HSIL和SCC中的表达率分别是22.2%、40.7%、50%、81.8%和100%。p16INK4a在ASC-US和HSIL之间、LSIL和HSIL之间表达有差异(P<0.003);结合组织学分析54例LSIL标本中p16INK4a阳性率,在炎症、CINⅠ、CINⅡ～Ⅲ中的阳性率分别是28.6%,25.0%和91.7%,CINⅡ～Ⅲ中p16INK4a的阳性率明显高于炎症组和CINⅠ组,3组之间的差异有显著统计学意义(P<0.001);HR-HPV DNA的荷载量与宫颈病变级别无相关性。结论:p16INK4a在液基细胞学HSIL中高表达,是细胞学诊断为LSIL病例中筛查癌前病变高危人群有意义的生物标记物。     

宫颈病变中人乳头瘤病毒来源E7蛋白表达及意义研究

目的探讨宫颈病变中人乳头瘤病毒(HPV)来源的E7蛋白表达及其与临床诊断病理级别的相关性。方法选取北京大学第一医院2015—2018年收治的宫颈上皮内瘤变(CIN)及宫颈鳞癌患者133例,另选取同期宫颈组织病理结果正常的34例患者为阴性对照。采用免疫组化染色技术检测E7蛋白的细胞表达情况,并与宫颈癌高危型HPV感染替代性标志物p16蛋白做比较。结果 E7蛋白在低度鳞状上皮内病变(LSIL)即CINⅠ中阳性率为63.64%(14/22),而在高度鳞状上皮内病变(HSIL)即CINⅡ、Ⅲ病例中阳性率为91.84%(45/49)和98.18%(54/55),宫颈癌中阳性率为100%(7/7)。p16蛋白阳性率在CINⅠ中为59.09%(13/22),CINⅡ、Ⅲ中分别为93.88%(46/49)和96.36%(53/55)。两者检测结果高度相关(P0.05)。随着宫颈病变程度的增加,E7和p16蛋白的阳性率均显著升高。但E7蛋白表达为片灶状阳性,与p16蛋白的弥漫阳性不同;同时HPV E7蛋白表达水平随CIN级别提升也显著增强。在HSIL及宫颈鳞癌中,E7蛋白阳性强度明显高于LSIL。随着患者年龄增长,E7蛋白的阳性率也呈升高趋势,并且其染色强度也增强。结论 E7癌蛋白的阳性率及其表达强度与宫颈病变程度密切相关,并与年龄有关;E7蛋白有望作为宫颈病变CIN诊断与分级的重要参考指标。     

Correlation of p16INK4A overexpression with human papillomavirus infection in cervical adenocarcinomas.

SUMMARY: As human papillomavirus (HPV) infection is the main risk factor for squamous cell carcinoma of the cervix and overexpression of p16INK4a occurs when retinoblastoma protein is inactivated by high-risk HPV, the authors studied the association of HPV infection and expression of p16INK4a in cervical adenocarcinomas. Specimens of cervical glandular neoplasias were immunostained with a p16INK4a-specific monoclonal antibody (clone E6H4). Approximately 80% of glandular neoplasms showed overexpression of p16INK4a. Exfoliated cells from 14 adenocarcinomas were further examined by p16INK4a-specific immunocytochemistry, and 12 cases showed overexpression of p16INK4a, suggesting that immunostaining for p16INK4a may be a useful diagnostic tool for cervical adenocarcinomas. The authors further examined HPV DNA in cervical adenocarcinomas with the polymerase chain reaction method. Overexpression of p16INK4a was positive in 94% of cases in which HPV16 or 18DNA was positive, a finding suggesting that HPV16 or 18 may play an important role in cervical adenocarcinomas. Overexpression of p16INK4a may be an indicator of pathogenic activity of high-risk HPVs.     

Prognostic markers of high-grade squamous intraepithelial lesions: the role of p16INK4a and high-risk human papillomavirus

BACKGROUND: p16INK4a seems to be an indicator of the grade of Human Papillomavirus-induced lesions and a possible predictor of the lesion evolution. There are few studies about the role of HPV test and p16INK4a in diagnosis of high-grade cervical lesions in South-American women. The aim of the present study was to evaluate the presence of p16INK4a and high-risk HPV-DNA expression in cases diagnosed as squamous intra-epithelial lesion and evaluate their role in the approach of high-grade squamous intra-epithelial lesion. METHODS: p16INK4a and high-risk Human papillomavirus were investigated in 96 samples of the cervix (13 cases of high grade squamous intraepithelial lesions, 26 cases of low grade intraepithelial lesions and 57 normal tissues). The p16INK4a was identified by immunohistochemistry using the p16INK4a kit (E6H4 clone, DakoCytomation, Carpinteria, CA) and Human papillomavirus DNA was classified by hybrid capture (Digene). Associations were evaluated by the KAPPA index. RESULTS: The p16INK4a was detected in 92.3% of the high-grade squamous intraepithelial lesions, in 15.4% of the low-grade and in none of the normal tissues. The sensitivity, specificity, positive predictive value and negative predictive value for high-grade lesion were 92.3%, 100%, 100%, and 98.3%, respectively when considering p16INK4a expression, and 100%, 70.2%, 43.3% and 100%, respectively when considering high-risk HPV. CONCLUSIONS: p16INK4a test was better associated with high-grade intraepithelial lesion (kappa = 0.95) than was the presence of high-risk HPV (kappa = 0.47). Both tests could be complementary to high-grade squamous intra-epithelial lesion screening and help to define the diagnosis of the inconclusive low-grade/high-grade squamous intraepithelial lesion cases.     

The expressions of the Rb pathway in cervical intraepithelial neoplasia; predictive and prognostic significance

OBJECTIVES: The aim of the study was to assess the expression of the Rb pathway (p16(INK4a)-cdk4-pRb) in cervical intraepithelial neoplasia as a prognostic marker by investigating the association between expression of Rb pathway and the recurrence. METHODS: The study group comprised of 265 paraffin-embedded tissues of the uterine cervix collected from patients between 2001 and 2003. Patients underwent ablative or excisional treatment and were followed for 2 years. RB pathway expression was examined using immunohistochemistry applied to a tissue microarray. HPV detection and genotyping were performed with HPV DNA Chip. Statistical analysis was done by ANOVA test, Student's t test, and Pearson's correlation test. RESULTS: With increasing CIN grade, p16(INK4a) and cdk4 expression rates increased, while the pRb expression rate decreased. The expression rate of p16(INK4a) was higher (33%) in CIN I with high-risk HPV infection than in CIN I without high-risk HPV infection (19%). The mean expression rates of p16(INK4a) were 29%, 39%, and 64%, respectively, in CIN I, II, and III without recurrence, but 25%, 28%, and 44% in those with recurrence. The mean expression rates of pRb were 47%, 40%, and 18% in CIN I, II, and III without recurrence, respectively, but 48%, 45%, and 34% in those with recurrence. CONCLUSION: A relatively low expression rate of p16(INK4a) has prognostic significance for predicting recurrence. The clinical utility of p16(INK4a) status for stratifying patients according to their need for aggressive treatment requires further investigation.     

Overexpression of p16INK4a as an indicator for human papillomavirus oncogenic activity in cervical squamous neoplasia

Overexpression of p16(INK4a) has been observed when retinoblastoma protein is inactivated by high-risk human papillomavirus (HPV) oncoprotein E7. We investigated overexpression of p16(INK4a) and HPV infection in cervical squamous neoplasia to evaluate the oncogenic potential among various HPV subtypes. The high-risk HPV was detected by PCR in 69.8% (37/53), 97.5% (39/40), 91.7% (44/48), and 100% (16/16) of cervical intraepithelial neoplasia (CIN)1, CIN2, CIN3, and squamous cell carcinoma (SCC), respectively. The p16(INK4a) overexpression was investigated immunohistochemically using a p16(INK4a)-specific monoclonal antibody (clone E6H4). In high-risk HPV positive cases, 32.4% (12/37) of CIN1, 82.1% (32/39) of CIN2, 93.2% (41/44) of CIN3, and all (16/16) SCC showed p16(INK4a) overexpression. The incidence of p16(INK4a) overexpression was significantly different between CIN1 and CIN2, suggesting that the disorder of cell cycle regulation by HPV frequently occurred from CIN2. As for CIN1 cases, p16(INK4a) overexpression was observed more frequently in HPV16 and HPV52 than in HPV51 and HPV35. Using p16(INK4a) as a bio marker of HPV oncogenic activity, we demonstrate that the level of pRb dysfunction by high-risk HPV varied from subtypes and was getting more frequent from CIN2.     

p16INK4a overexpression independent of human papillomavirus infection in lobular endocervical glandular hyperplasia.

A high rate of human papillomavirus (HPV) infection has been reported in cervical cancer and precancerous lesions. Many studies also have shown that p16INK4a overexpression is of diagnostic value for high-risk HPV-related cervical cancer and precursors. Lobular endocervical glandular hyperplasia (LEGH) is a rare lesion of the uterine cervix. There is one report about HPV infection and few studies on p16INK4a expression in LEGH. Therefore, we 1) detected HPV infection and examined p16INK4a expression and 2) observed the relationship between HPV and p16INK4a overexpression in LEGH. The immunohistochemical expression of p16INK4a was studied in 24 cases of LEGH. HPV DNA was also evaluated in these cases using a polymerase chain reaction technique. Strong (++) p16INK4a immunoreactivity was observed in 10 (41.7%) of the 24 LEGH cases; a moderate (+) pattern was observed in 9 (37.5%) cases; a weak (+) pattern was observed in 2 (8.3%) cases; and the remaining 3 (12.5%) cases showed negative expression. Overall, p16INK4a overexpression was seen in 87.5% of the cases (21/24). HPV DNA was not detected in any of the 24 LEGH cases. These results suggest that p16INK4a overexpression is independent of HPV infection in LEGH.     

宫颈鳞癌和上皮内瘤变组织中TRF1、TRF2及HPV16、HPV18的检测及其意义

目的研究端粒结合蛋白TRF1、TRF2在宫颈鳞癌发生发展中的作用并分析HPV16、HPV18感染与TRF1、TRF2蛋白表达的关系。方法随机选择南华大学附属第一医院病理科2005年9月至2006年10月期间的组织石蜡块标本共86例,采用原位杂交方法检测HPV16、HPV18在15例正常宫颈上皮、36例宫颈上皮内瘤变(CIN)和35例宫颈鳞癌组织中的感染情况;采用免疫组化方法检测所有组织标本中TRF1、TRF2蛋白的表达。结果(1)HPV16、HPV18阳性感染率CIN组[63.9%(23/36)]和宫颈鳞癌组[97.1%(34/35)]显著高于正常组[20.0%(3/15)](χ2=30.639,P<0.01)。(2)TRF1阳性表达率宫颈鳞癌组[40.0%(14/35)]显著低于CIN组[63.9%(23/36)]和正常组[86.7%(13/15)](χ2=10.237,P<0.01);CINⅢ组[42.9%(6/14)]显著低于CINⅠ组[90.0(9/10)](χ2=5.531,P<0.01)。TRF2阳性表达率宫颈鳞癌组[80.0%(28/35)]显著高于CIN组[52.8%(19/36)]和正常组[...     

CARM1、p16INK4a在子宫颈鳞状细胞癌中的表达及临床意义

目的 检测子宫颈鳞状细胞癌(CSCC)、宫颈上皮内病变及正常宫颈组织中组蛋白精氨酸甲基转移酶1(CARM1)、p16INK4a的表达,探讨两者在子宫颈鳞癌发生发展中的作用.方法 运用免疫组化技术检测CSCC、宫颈上皮内病变及正常宫颈组织中CARM1、p16INK4a表达,分析二者表达与子宫颈鳞状细胞癌临床病理特征及生存...     

子宫颈上皮癌变过程中Ki67表达和HPV感染的研究

目的 研究Ki67表达和HPV感染在宫颈癌发生发展过程中的意义。方法 分别从正常宫颈(10例)、各级CIN(CIN Ⅰ19例,CIN Ⅱ9例,CIN Ⅲ16例)和宫颈鳞癌(8例)的石蜡标本提取基因组DNA,选取HPV L1区通用引物进行PCR扩增,测序,与已知HPV序列进行同源性分析。Ki67免疫组化染色。结果 正常宫颈组HPV DNA均为阴性。CIN Ⅰ组5/19例为高危型HPV(16/18型),8/19例为中危型(35型等),其余为低危型。CINⅡ和Ⅲ组高危和中危型HPV各占一半。宫颈癌组均为高危型,绝大部分为HPV16。Ki67指数随CIN级别的升高(CINⅠ:21.4±1.1,CINⅡ:31.8±3.5 CINⅢ:61.3±2.8)而明显增加(P<0.01)。结论Ki67指数反映出在宫颈上皮细胞癌变过程中细胞增殖活性的改变。HPV型别与CIN级别及转归密切相关。Ki67与HPV检查联合应用对评价CIN细胞增殖活性及其转归有重要的作用,对伴有HPV16/18 感染的CIN应密切追踪和积极处理。