AIM To explore relationships between human carcinomas and mycoplasma infection.METHODS Monoclonal antibody PD4, which specifically recognizes a distinct protein from mycoplasma hyorhinis, was used to detect mycoplasma...AIM To explore relationships between human carcinomas and mycoplasma infection.METHODS Monoclonal antibody PD4, which specifically recognizes a distinct protein from mycoplasma hyorhinis, was used to detect mycoplasma infection in different paraffinembedded carcinoma tissues with immunohistochemistry. PCR was applied to amplify the mycoplasma DNA from the positive samples for confirming immunohistochemistry.RESULTS Fifty of 90 cases (56%) of gastric carcinoma were positive for mycoplasma hyorhinis. In other gastric diseases, the mycoplasma infection ratio was 28% (18/49) in chronic superficial gastritis, 30% (14/ 46) in gastric ulcer and 37% (18/ 49) in intestinal metaplasia. The difference is significant with gastric cancer (X2=12.06, P＜0.05). In colon carcinoma, the mycoplasma infection ratio was 55.1% (32/58), but it was 20.9% (10/49) in adenomarous polyp (X2=13.46, P＜0.005).Gastric and colon cancers with high differentiation had a higher mycoplasma infection ratio than those with low differentiation (P＜ 0.05). Mycoplasma infection in esophageal cancer, lung cancer, breast cancer and glioma was 50.9% (27/53), 52.6% (31/ 59), 39.7%(25/63) and 41% (38/91), respectively. The mycoplasma DNA was successfully amplified with the DNA extracted from the cancer tissues that were positive for mycoplasma infection (detected with antibody PD4).CONCLUSION There was high correlation between mycoplasma infection and different cancers, which suggests the possibility of an association between the two. The mechanism involved in oncogenesis by mycoplasma remains unknown.展开更多
Objective: To survey hemoplasmas infection in free ranging non-human primates from 8 provinces in Thailand. Methods: DNA from ethylenediaminetetraacetic acid blood of 262 free ranging non-human primates were identifie...Objective: To survey hemoplasmas infection in free ranging non-human primates from 8 provinces in Thailand. Methods: DNA from ethylenediaminetetraacetic acid blood of 262 free ranging non-human primates were identified as hemoplasmas using PCR and phylogenetic analysis based on 16 S r RNA and rnp B genes. Results: A total of 148 non-human primates(56.49%) were determined positive for Candidatus Mycoplasma haemomacaque, including 125 Macaca fascicularis and 23 Macaca mulatta. Hemoplasmas can cause anemia in monkey but all positive samples were healthy. The positive rates in male and female non-human primates were not significantly different. Conclusions: Candidatus Mycoplasma infection is prevalent in free ranging Macaca fascicularis and Macaca mulatta in Thailand.展开更多
Objective: This study aims to explore the correlation between human papillomavirus (HPV) and Mycoplasma genitalium (CT) combined with TCT detection in cervical cancer screening. Method: A cross-sectional study design ...Objective: This study aims to explore the correlation between human papillomavirus (HPV) and Mycoplasma genitalium (CT) combined with TCT detection in cervical cancer screening. Method: A cross-sectional study design was adopted, and a total of 609 women who came to seek medical treatment were recruited as the study subjects. Combination testing was evaluated on cervical cancer screening by testing the women for HPV, CT with TCT detection and analyzing the relationship of cervical lesions with HPV and CT infection. Results: The study results showed that 21.57% of the subjects were infected with both HPV and CT, and 48.42% of the cases had abnormal TCT results at the same time. Further data analysis showed that HPV infection was significantly associated with abnormal TCT outcomes (p < 0.05), suggesting a possible synergistic effect of the two infections in cervical lesions. The combined sensitivity and specificity of HPV, CT and TCT detection were 21.57% and 48.42%, respectively, which were significantly higher than that of single detection. Conclusion: In summary, the results of this study support the importance of combined HPV, CT, and TCT testing in cervical cancer screening, and propose the hypothesis that combined testing may improve screening effectiveness. However, further large sample studies are needed to confirm this conclusion and explore the prospects of combined testing in clinical practice.展开更多
目的分析高危型人乳头瘤病毒(high-risk human papillomavirus,HR-HPV)感染的相关危险因素。方法选取2020年10月—2021年1月就诊于首都医科大学附属北京妇产医院妇科门诊的HR-HPV感染者作为感染组,同期于妇科门诊行子宫颈癌筛查且结果为...目的分析高危型人乳头瘤病毒(high-risk human papillomavirus,HR-HPV)感染的相关危险因素。方法选取2020年10月—2021年1月就诊于首都医科大学附属北京妇产医院妇科门诊的HR-HPV感染者作为感染组,同期于妇科门诊行子宫颈癌筛查且结果为HR-HPV阴性的患者作为对照组。两组均填写自行设计的《HR-HPV感染相关危险因素调查表》,统计分析HR-HPV感染相关危险因素。结果共纳入感染组患者125例,对照组患者53例。对两组进行单因素组间比较显示,感染组无业或职业社会经济地位较低、用洗剂清洁外阴、冲洗阴道频率高、性取向为同性、生育次数多、既往阴道炎病史、阴道分泌物量多、阴道分泌物性状异常和沙眼衣原体感染率均高于对照组(P均<0.05)。多因素Logistic回归分析显示,生育史(OR=5.106,95%CI:1.521~17.145,P=0.008)、既往阴道炎病史(OR=3.910,95%CI:1.167~13.099,P=0.027)、阴道分泌物异常(OR=758.313,95%CI:58.151~9888.714,P<0.001)是HR-HPV感染的危险因素。此外,用洗剂清洗外阴或冲洗阴道的清洁习惯(OR=2.004)、性取向为同性(OR=13.972)、沙眼衣原体阳性(OR=15.058)均显示出与HR-HPV感染具有较强的关联性,但由于对照组样本量较少,并未得出有统计学意义的结果。结论HR-HPV感染与多种因素相关,生育次数多、既往阴道炎病史、阴道分泌物性状异常是HR-HPV感染的危险因素,建议重视阴道分泌物变化,如有异常,及时就诊。在有条件的情况下,行宫颈HR-HPV筛查时加入阴道微生态的相关检查,如患有生殖道炎性疾病,应及时治疗,从多方面预防HR-HPV感染及降低HR-HPV持续感染的风险。展开更多
目的:研究支原体感染对人类细胞株的核糖体新生肽链复合体(RNC)中rRNA组成的影响及其相关机制。方法:分别提取支原体阳性与阴性RNC-RNA进行琼脂糖凝胶电泳,分析RNC-rRNA组成改变情况;在支原体污染环境中培养人正常肺上皮(HBE)细胞,比较...目的:研究支原体感染对人类细胞株的核糖体新生肽链复合体(RNC)中rRNA组成的影响及其相关机制。方法:分别提取支原体阳性与阴性RNC-RNA进行琼脂糖凝胶电泳,分析RNC-rRNA组成改变情况;在支原体污染环境中培养人正常肺上皮(HBE)细胞,比较培养前后RNC-rRNA的变化;对RNC-RNA条带异常细胞进行抗支原体治疗,比较治疗前后RNC-rRNA的变化。利用免疫印迹分析支原体污染对丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)途径的影响。结果:不同组织来源的多株细胞中,支原体阴性和阳性细胞RNCRNA的琼脂糖电泳显示细胞中RNC-rRNA组成发生异常改变,主要体现为28S和18S真核rRNA的降低,以及16S和未知原核rRNA的增加。在污染环境中培养HBE细胞,其RNC-rRNA组成可由支原体阴性转变为阳性谱型。以环丙沙星抗支原体治疗可逆转上述RNC-rRNA谱型的改变。总蛋白和磷酸化蛋白的免疫印记结果表明,支原体污染显著抑制A549细胞的p38 MAPK途径的活化,而对该细胞的ERK1/2途径无显著改变。结论:支原体感染可通过抑制p38 MAPK活化严重改变人类细胞株中RNC-rRNA的组成,从而影响宿主细胞的翻译行为。展开更多
基金Supported by National 863 Project (102-10-01-08)National Natural Science Foundation of China(39570405)+1 种基金Natural Science Foundation of Beijing(7941001)State Key Basic Research Program(G1998051203)
文摘AIM To explore relationships between human carcinomas and mycoplasma infection.METHODS Monoclonal antibody PD4, which specifically recognizes a distinct protein from mycoplasma hyorhinis, was used to detect mycoplasma infection in different paraffinembedded carcinoma tissues with immunohistochemistry. PCR was applied to amplify the mycoplasma DNA from the positive samples for confirming immunohistochemistry.RESULTS Fifty of 90 cases (56%) of gastric carcinoma were positive for mycoplasma hyorhinis. In other gastric diseases, the mycoplasma infection ratio was 28% (18/49) in chronic superficial gastritis, 30% (14/ 46) in gastric ulcer and 37% (18/ 49) in intestinal metaplasia. The difference is significant with gastric cancer (X2=12.06, P＜0.05). In colon carcinoma, the mycoplasma infection ratio was 55.1% (32/58), but it was 20.9% (10/49) in adenomarous polyp (X2=13.46, P＜0.005).Gastric and colon cancers with high differentiation had a higher mycoplasma infection ratio than those with low differentiation (P＜ 0.05). Mycoplasma infection in esophageal cancer, lung cancer, breast cancer and glioma was 50.9% (27/53), 52.6% (31/ 59), 39.7%(25/63) and 41% (38/91), respectively. The mycoplasma DNA was successfully amplified with the DNA extracted from the cancer tissues that were positive for mycoplasma infection (detected with antibody PD4).CONCLUSION There was high correlation between mycoplasma infection and different cancers, which suggests the possibility of an association between the two. The mechanism involved in oncogenesis by mycoplasma remains unknown.
基金supported by Faculty of Veterinary Science, Mahidol University
文摘Objective: To survey hemoplasmas infection in free ranging non-human primates from 8 provinces in Thailand. Methods: DNA from ethylenediaminetetraacetic acid blood of 262 free ranging non-human primates were identified as hemoplasmas using PCR and phylogenetic analysis based on 16 S r RNA and rnp B genes. Results: A total of 148 non-human primates(56.49%) were determined positive for Candidatus Mycoplasma haemomacaque, including 125 Macaca fascicularis and 23 Macaca mulatta. Hemoplasmas can cause anemia in monkey but all positive samples were healthy. The positive rates in male and female non-human primates were not significantly different. Conclusions: Candidatus Mycoplasma infection is prevalent in free ranging Macaca fascicularis and Macaca mulatta in Thailand.
文摘Objective: This study aims to explore the correlation between human papillomavirus (HPV) and Mycoplasma genitalium (CT) combined with TCT detection in cervical cancer screening. Method: A cross-sectional study design was adopted, and a total of 609 women who came to seek medical treatment were recruited as the study subjects. Combination testing was evaluated on cervical cancer screening by testing the women for HPV, CT with TCT detection and analyzing the relationship of cervical lesions with HPV and CT infection. Results: The study results showed that 21.57% of the subjects were infected with both HPV and CT, and 48.42% of the cases had abnormal TCT results at the same time. Further data analysis showed that HPV infection was significantly associated with abnormal TCT outcomes (p < 0.05), suggesting a possible synergistic effect of the two infections in cervical lesions. The combined sensitivity and specificity of HPV, CT and TCT detection were 21.57% and 48.42%, respectively, which were significantly higher than that of single detection. Conclusion: In summary, the results of this study support the importance of combined HPV, CT, and TCT testing in cervical cancer screening, and propose the hypothesis that combined testing may improve screening effectiveness. However, further large sample studies are needed to confirm this conclusion and explore the prospects of combined testing in clinical practice.
文摘目的分析高危型人乳头瘤病毒(high-risk human papillomavirus,HR-HPV)感染的相关危险因素。方法选取2020年10月—2021年1月就诊于首都医科大学附属北京妇产医院妇科门诊的HR-HPV感染者作为感染组,同期于妇科门诊行子宫颈癌筛查且结果为HR-HPV阴性的患者作为对照组。两组均填写自行设计的《HR-HPV感染相关危险因素调查表》,统计分析HR-HPV感染相关危险因素。结果共纳入感染组患者125例,对照组患者53例。对两组进行单因素组间比较显示,感染组无业或职业社会经济地位较低、用洗剂清洁外阴、冲洗阴道频率高、性取向为同性、生育次数多、既往阴道炎病史、阴道分泌物量多、阴道分泌物性状异常和沙眼衣原体感染率均高于对照组(P均<0.05)。多因素Logistic回归分析显示,生育史(OR=5.106,95%CI:1.521~17.145,P=0.008)、既往阴道炎病史(OR=3.910,95%CI:1.167~13.099,P=0.027)、阴道分泌物异常(OR=758.313,95%CI:58.151~9888.714,P<0.001)是HR-HPV感染的危险因素。此外,用洗剂清洗外阴或冲洗阴道的清洁习惯(OR=2.004)、性取向为同性(OR=13.972)、沙眼衣原体阳性(OR=15.058)均显示出与HR-HPV感染具有较强的关联性,但由于对照组样本量较少,并未得出有统计学意义的结果。结论HR-HPV感染与多种因素相关,生育次数多、既往阴道炎病史、阴道分泌物性状异常是HR-HPV感染的危险因素,建议重视阴道分泌物变化,如有异常,及时就诊。在有条件的情况下,行宫颈HR-HPV筛查时加入阴道微生态的相关检查,如患有生殖道炎性疾病,应及时治疗,从多方面预防HR-HPV感染及降低HR-HPV持续感染的风险。
文摘目的:研究支原体感染对人类细胞株的核糖体新生肽链复合体(RNC)中rRNA组成的影响及其相关机制。方法:分别提取支原体阳性与阴性RNC-RNA进行琼脂糖凝胶电泳,分析RNC-rRNA组成改变情况;在支原体污染环境中培养人正常肺上皮(HBE)细胞,比较培养前后RNC-rRNA的变化;对RNC-RNA条带异常细胞进行抗支原体治疗,比较治疗前后RNC-rRNA的变化。利用免疫印迹分析支原体污染对丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)途径的影响。结果:不同组织来源的多株细胞中,支原体阴性和阳性细胞RNCRNA的琼脂糖电泳显示细胞中RNC-rRNA组成发生异常改变,主要体现为28S和18S真核rRNA的降低,以及16S和未知原核rRNA的增加。在污染环境中培养HBE细胞,其RNC-rRNA组成可由支原体阴性转变为阳性谱型。以环丙沙星抗支原体治疗可逆转上述RNC-rRNA谱型的改变。总蛋白和磷酸化蛋白的免疫印记结果表明,支原体污染显著抑制A549细胞的p38 MAPK途径的活化,而对该细胞的ERK1/2途径无显著改变。结论:支原体感染可通过抑制p38 MAPK活化严重改变人类细胞株中RNC-rRNA的组成,从而影响宿主细胞的翻译行为。
