阴道菌群、宫颈局部T细胞亚群和炎性因子改变对HPV感染的影响
发布时间:2018-11-01 20:13
【摘要】:目的: 研究不同级别宫颈病变伴HPV感染患者的阴道菌群、宫颈局部T细胞亚群和炎性因子的分布特点,探讨阴道菌群与宫颈局部免疫功能的关系,并综合分析它们对HPV感染及致癌的影响,为如何改善宫颈局部状态提供实验依据,为HPV持续感染的干预和清除提供参考意见,为宫颈癌的防治研究提供新的思路。 方法: 研究对象为2012年3月至2013年10月期间在广西医科大学附属肿瘤医院妇瘤科因自觉阴道瘙痒或可疑有宫颈病变而就诊的患者,最终选取HPV阳性且经病理活检确诊为CIN或宫颈癌的患者180例为实验组,其中CIN组134例(CINⅠ级35例、CINⅡ级42例、CINⅢ级57例),宫颈癌组46例;以HPV阴性且宫颈活检正常者60例为对照组。以上患者均在初诊时取阴道分泌物、宫颈分泌物及脱落细胞、宫颈组织标本,用导流杂交基因芯片技术检测HPV-DNA,精密PH试纸测PH值,,悬滴湿片法检测滴虫,革兰氏染色检测霉菌、线索细胞、淋球菌、乳酸杆菌,试剂盒检测支原体和衣原体,流式细胞术及免疫组化法检测宫颈CD4+、CD8+T淋巴细胞,酶联免疫吸附实验(ELISA)检测炎性因子IFN-γ、TNF-α、IL-2、IL-4、IL-6、IL-10。 结果: 1.在CINⅠ、CINⅡ、CINⅢ及宫颈癌组中HPV单一感染率呈上升趋势,多重感染率呈下降趋势(P<0.05)。HPV共检出18种基因型,高危型HPV的检出率远高于低危型的检出率,检出率排在前3位的是HPV16、52和58,且16型感染率随宫颈病变程度的增加也呈上升趋势(P<0.05)。 2.在对照组、CINⅠ、CINⅡ、CINⅢ及宫颈癌组中细菌性阴道病、解脲支原体、衣原体的感染及乳酸杆菌的阴性率随病变程度的增加呈上升趋势(P<0.05);滴虫、霉菌、人型支原体的感染情况无统计学意义(P>0.05);所有样本中未检测到淋球菌,无法分析淋球菌感染与宫颈病变的关系。 3.在对照组、CINⅠ、CINⅡ、CINⅢ及宫颈癌组的宫颈分泌物中CD4+T占宫颈上皮细胞的百分比呈下降趋势(P<0.05),CD8+T的百分比无明显差异(P>0.05),但CD4+/CD8+的比值呈下降趋势(P<0.05)。各组宫颈组织中CD4阳性表达率呈下降趋势,CD8阳性表达率呈上升趋势,CD4+/CD8+比值<1的患者所占的比率随宫颈病变程度的加重也呈上升趋势(都有P<0.05)。 4.在对照组、CINⅠ、CINⅡ、CINⅢ及宫颈癌组的宫颈分泌物中IFN-γ、IL-2的含量均呈下降趋势,IL-4的含量呈上升趋势,且IFN-γ/IL-4、IL-2/IL-4的比值也呈下降趋势(都有P<0.05);而各组TNF-α、IL-6、IL-10的含量无区别(P>0.05)。 5.细菌性阴道病、人型支原体、衣原体的感染是IL-2减少的独立危险因素(P<0.05),细菌性阴道病、解脲支原体、衣原体感染是IL-4增多的独立危险因素(P<0.05)。 6.将HPV检测结果作为因变量,其他所有研究因素作为自变量逐一进行单因素logistic回归分析,结果显示:乳酸杆菌、IFN-γ、IL-2、IL-4在HPV阳性组与阴性组间差异有统计学意义(P<0.05);在此基础上进行多因素logistic回归分析,最终显示IFN-γ、IL-2、IL-4与HPV感染具有显著相关性(P<0.01)。 结论: 1.宫颈病变的发展不依赖HPV感染亚型种类的多少,而取决于HPV亚型的致病力。单一高危型HPV感染更易导致宫颈癌的发生,多重感染并不增加患宫颈癌的机率。 2.细菌性阴道病、解脲支原体、衣原体感染的增加及乳酸杆菌的减少与宫颈病变的发生发展密切相关。 3.细菌性阴道病、解脲支原体、人型支原体、衣原体感染的增加与宫颈局部免疫功能的下降密切相关。 4.随宫颈病变程度的加重,宫颈局部CD4+/CD8+及Th1/Th2的比值均逐渐降低;表明宫颈局部免疫功能下降,促进了宫颈病变的发生发展。 5. IFN-γ、IL-2的含量与HPV感染呈负相关,乳酸杆菌的阴性率和IL-4的含量与HPV感染呈正相关,且IFN-γ、IL-2的减少及IL-4的增多都是HPV感染的独立危险因素。
[Abstract]:Purpose: To study the distribution characteristics of vaginal flora and local T cell subpopulations and inflammatory factors in different levels of cervical lesions with HPV infection, to investigate the relationship between vaginal flora and local immune function in cervix, and to comprehensively analyze their relationship to HPV infection and carcinogenesis To provide an experimental basis for how to improve the local state of the cervix, provide reference for the intervention and clearance of HPV infection, and provide a new method for the prevention and treatment of cervical cancer. Train of thought. Methods: From March 2012 to October 2013, the subjects who were diagnosed as CIN or cervical cancer were diagnosed with HPV positive and pathological biopsy. 180 cases were experimental group, including 134 cases of CIN (35 cases of CIN 鈪
本文编号:2304973
[Abstract]:Purpose: To study the distribution characteristics of vaginal flora and local T cell subpopulations and inflammatory factors in different levels of cervical lesions with HPV infection, to investigate the relationship between vaginal flora and local immune function in cervix, and to comprehensively analyze their relationship to HPV infection and carcinogenesis To provide an experimental basis for how to improve the local state of the cervix, provide reference for the intervention and clearance of HPV infection, and provide a new method for the prevention and treatment of cervical cancer. Train of thought. Methods: From March 2012 to October 2013, the subjects who were diagnosed as CIN or cervical cancer were diagnosed with HPV positive and pathological biopsy. 180 cases were experimental group, including 134 cases of CIN (35 cases of CIN 鈪
本文编号:2304973
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