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为了探讨人巨细胞病毒(Humancytomegalovirus,HCMV)与宫颈癌发生之间的关系,我们利用紫外线灭活的HCMV诱发小鼠宫颈癌的动物模型进行了研究。经紫外线灭活的HCMV液接种于小鼠宫颈部,3次/周×8周,接着以巴豆油按同样的方法2次/周×4周进行处理。同时设立HCMV及人胚肺细胞HEL培养液对照组等。经20个月后,折颈处死动物,取出完整的生殖道作病理学检测,结果发现:HCMV组宫颈癌前病变率为27.8%(23/83),癌发率为20.5%(17/83);HEL培养液对照组仅1例发生宫颈不典型增生(CINⅠ),癌发率为零(0/31)。在HCMV加巴豆油组,宫颈不典型增生的发生率为26.4%(14/53)。而癌发率则提高到52.8%(28/53)。此结果提示,人巨细胞病毒AD169株具有在体内转化宫颈内皮细胞,从而诱发宫颈癌的能力,巴豆油能够促进HCMV的诱癌能力,因此也讨论了HCMV致癌机制。
To investigate the relationship between human cytomegalovirus (HCMV) and cervical cancer, we studied the animal model of cervical cancer induced by UV-inactivated HCMV. The UV-inactivated HCMV solution was inoculated into the mouse cervix 3 times/week x 8 weeks, followed by treatment with croton oil 2 times/week x 4 weeks in the same manner. At the same time, HCMV and human embryo lung cell HEL culture fluid control groups were established. After 20 months, the animals were killed by folding their necks and the complete genital tract was removed for pathological examination. The results showed that the precancerous lesion rate in the HCMV group was 27.8% (23/83), and the cancer incidence was 20.5%. (17/83); HEL culture fluid control group only 1 case of cervical dysplasia (CINI), cancer rate was zero (0/31). In the HCMV Gabba oil group, the incidence of cervical dysplasia was 26.4% (14/53). The incidence of cancer increased to 52.8% (28/53). This result suggests that the human cytomegalovirus AD169 strain has the ability to transform cervical endothelial cells in vivo, thereby inducing cervical cancer. Croton oil can promote the cancer-inducing ability of HCMV, and therefore the mechanism of HCMV carcinogenesis is also discussed.