• 대한의생명과학회지
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• 제21권2호
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• pp.69-76
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• 2015

Cervical cancer is the third most common cancer in women worldwide and there is a significant association between human papillomavirus (HPV) infection and cervical cancer. Certain HPV groups, labeled high-risk (HR) HPV groups, are strongly associated with malignancies of the human cervix. HPV prevalence and genotype distribution were analyzed using the REBA $HPV-ID^{(R)}$ (YD Diagnostics, Yongin, Korea) assay based on the reverse blot hybridization assay (REBA) with a total of 324 liquid-based cytology samples from women in Western Shandong Province, East China and results were compared with cytological diagnosis. Most of the HPV genotypes that were detected in high-grade cervical lesions were HR-HPV genotypes such as HPV 16, 18, 33, 53, and 58. The prevalence of these HR-HPV genotypes increased in high-grade cervical lesions. However, from low- to high-grade cervical lesions, the ability to detect LR-HPV genotypes decreased. Additionally, in general, the single HPV genotype infection rate increases in proportion to the severity of the lesion. The study findings suggest that a currently available preventive vaccine against HPV 16 and 18 may have limited effectiveness for prevention of all HPV infection in this province. Finally, based on these findings, these data could guide national or regional vaccination programs in the Western Shandong Province of East China to substantially reduce the burden of cervical lesions.

• Journal of Microbiology and Biotechnology
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• 제24권8호
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• pp.1143-1147
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• 2014

Human papillomavirus (HPV) infection is considered to play a critical role in the development of cervical carcinoma, which is the third most common cancer among Korean females. Here, we performed a baseline study of HPV infection and genotyping using an HPV DNA chip, which is a type of oligonucleotide microarray. A total of 6,855 cervical swab specimens from 5,494 women attending Dankook University Hospital Health Improvement Center in Cheonan, Korea between 2006 and 2012, originally collected for HPV infection screening, were genotyped for HPV. The extracted DNA from the cervical specimens was investigated by an HPV DNA chip designed to detect 41 different HPV types. HPV was identified as positive in 1,143 (16.7%) of the 6,855 samples. The most frequently detected HPV genotypes were HPV types 16, 53, 56, 58, 39, 52, 70, 84, 68, 62, 35, 54, 81, 18, and 30, in descending order of incidence. The proportions of single and multiple HPV infections in the HPV-positive specimens were 78.1% and 21.9%, respectively. The average age of HPV-positive patients was 39.9 years, with the positive rate of HPV being the highest in the 10-29 age group (20.6%). We report here on the prevalence and distribution of 41 different genotypes of HPV according to age among women in Cheonan, Korea. These data may be of use as baseline data for the assessment of public health-related issues and for the development of area-specific HPV vaccines.

• 대한바이러스학회지
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• 제26권1호
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• pp.115-120
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• 1996

Human papillomavirus (HPV), especially type 16 and 18, has been closely associated with carcinomas and uterine cevical cancer, recently. From in vitro assays, E6 and E7 genes of HPV16 are closely linked with transformation of cell lines of rodent fibroplasts. However, the transforming activity of E6 and E7 genes of HPV type 16 in vivo has not been fully elucidated. For explaining this mechanism, we prepared a expression system with the promoter of mouse mammary tumorvirus long terminal repeat and E6E7's open reading frames. This expression system was introduced in rodent cell lines, No. 7, 3Y1 and shown normal transforming abilities. And, we produced transgenic mice with E6, E7 expression system. These transgenic mice were confirmed from Southern blot analysis. One male of them was observed enlargement of the testis after 5 months postdelivery.

• Asian Pacific Journal of Cancer Prevention
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• 제13권3호
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• pp.799-802
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• 2012

Background: Human papillomavirus (HPV) is a very common sexually transmitted disease affecting both men and women and is responsible for different ano-genital cancers in either sex. Co-existing sexually transmitted infections (STI) including HIV have been considered as important co-factors for carcinogenesis induced by HPV. The purpose of this study was to determine the prevalence of any HPV, HPV 16 and HPV 18 and also concomitant STIs among female sex workers (FSW), men having sex with men (MSM) and injectable drug users (IDU). Material and Method: This cross-sectional study was conducted among 45 FSWs, 26 MSMs and 58 IDUs who attended the STI or de-addiction clinics. Genital scrape samples collected from glans penis and coronal sulcus in males and cervical squamo-columnar junction in females were tested for HPV DNA by PCR using HPV L1 consensus primer. Type specific PCR to detect HPV 16 and 18 was done on the samples positive on consensus PCR. All participants were tested for associated STIs including HIV and hepatitis B and cervical cytology was done on all females. Results: Among the FSWs, HPV was detected in 73.3% and HPV 16 and 18 was detected in 25.7%. Though the HPV prevalence was similarly high among MSMs (69.2%) and IDUs (72.4%), the prevalence of HPV 16 and 18 was much lower in these groups compared to the FSWs. Prevalence of cervico-vaginal infection with Trichomonas vaginalis and syphilis was significantly higher in the HPV positive women compared to the HPV negative women. There was no statistically significant difference in the prevalence of other STIs among HPV positive and negative women and men. Conclusion: HPV infection is highly prevalent among FSW, MSM and IDUs. Trichomonas vaginalis infection is more frequent in HPV positive women.

• 한국학교보건학회지
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• 제30권2호
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• pp.93-102
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• 2017

Purpose: The purpose of this study is to identify the factors that influence the practices and the intentions of human papillomavirus (HPV) vaccination among adolescent daughters' mothers. The focus is on the mothers' HPV knowledge and sex-related communication with their daughters. Methods: The participants were 298 mothers with middle or high school student daughters. Participants were conveniently selected from a mothers' association and churches in Seoul, Cheonan and Asan city. Information on their demographics, HPV vaccination-related knowledge, sex-related communication, and intention of receiving HPV vaccination were obtained through questionnaires. The results were analyzed using descriptive statistics, the $x^2$ test and logistic regression with SPSS for Windows 21.0 software. Results: The rate of HPV vaccination, the awareness of the HPV vaccine and the rate of giving correct answers to HPV knowledge questions were 13.1%. 84.6%, and 36.3%, respectively. The factors that influenced HPV vaccination most were their family history of cervical cancer, educational backgrounds and awareness of the HPV vaccine. The intention to receive HPV vaccination was mainly influenced by HPV knowledge. However, sex-related communication did not affect the mothers' intention of obtaining HPV vaccination. Conclusion: The results of this study suggest that strategies to educate mothers with adolescent daughters on HPV are necessary. In addition, this study strongly recommends further studies be planned to examine sex-related communication between mothers and daughters.

• 한국콘텐츠학회논문지
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• 제21권1호
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• pp.674-683
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• 2021

본 연구는 건강신념과 자기효능감이 개인의 질병 예방행위를 결정하는 영향요인으로 보고, HPV 예방접종과 관련된 건강신념과 자기효능감이 HPV 예방행위의도에 미치는 영향을 파악하고자 하였다. 전국 5개 지역 4년제 대학에 재학 중인 여대생을 대상으로 405명의 자료를 수집하였으며, 수집된 자료는 SPSS 25.0 Statistics Program을 이용하여 분석하였다. 연구결과 감염예방행위의도에 영향을 주었던 전공계열, HPV 관련 지식, HPV 예방접종 경험을 통제변수로 투입한 후에도 HPV 예방접종 관련 건강신념과 자기효능감이 감염예방행위 의도에 유의한 영향이 있음을 확인하였다. 본 연구결과를 통해 여대생의 HPV 관련 감염예방행위의도에 영향을 미치는 요인을 파악함으로써 여대생의 HPV 감염예방행위의도를 높일 수 있는 중재 개발을 위해 개인의 건강신념과 자기효능감 개선이 필요함을 확인하였으며, 이와 같은 연구결과를 바탕으로 HPV 예방행위 증진을 위한 다양한 프로그램 개발과 운영이 필요하다 여겨진다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권14호
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• pp.5773-5779
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• 2014

Background: Since cervical cancer can be prevented and controlled through human papillomavirus (HPV) vaccination, it is important to train health care providers and provide them with appropriate knowledge. This study aimed to understand the level of HPV related knowledge among medical students and correlates in Southwest China in order to address any potential gap in their knowledge base. Methods: We conducted a cross-sectional survey among medical students in six selected universities across Southwest China based on a pretested questionnaire regarding HPV infection, cervical cancer, and HPV vaccines. Results: We successfully surveyed 1, 878 medical students, of whom 32.1% were males and 67.9% were females. Their mean age was 20.8 (standard deviation: 1.3) years. 91.8% of them were ethnic Han Chinese, and 43.8% were students in clinical medicine. While 76.5% had heard of HPV only 48.8% knew that the prevention of cervical cancer was possible through HPV vaccination. Only 42.9% of the male and 49.2% of the female students correctly answered over 10 out of 22 questions on HPV related knowledge. Female students appeared to know more about HPV and HPV vaccination (OR: 1.39; 95% CI: 1.11-1.75). In addition, the student knowledge improved with the grade (p<0.001). University courses were the most selected source of knowledge about HPV vaccination (66.4%). 83.6% of males and 91.4% of females were willing to have more HPV related education by experts (p<0.001). Only 10.1% of the students acknowledged that people had asked for their advice regarding HPV vaccination. Conclusions: Our survey indicates that medical students from Southwest China have poor knowledge of HPV and HPV vaccination, but are willing to receive more relevant information. Targeted education should be incorporated into school courses to inform these future health care providers and ensure success of programs for cervical cancer control and prevention.

• BMB Reports
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• 제49권8호
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• pp.431-436
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• 2016

Human papillomavirus (HPV) is the major cause of cervical cancer, a deadly threat to millions of females. The early oncogene product (E7) of the high-risk HPV16 is the primary agent associated with HPV-related cervical cancers. In order to understand how E7 contributes to the transforming activity, we investigated the structural features of the flexible N-terminal region (46 residues) of E7 by carrying out N-15 heteronuclear NMR experiments and replica exchange molecular dynamics simulations. Several NMR parameters as well as simulation ensemble structures indicate that this intrinsically disordered region of E7 contains two transient (10-20% populated) helical pre-structured motifs that overlap with important target binding moieties such as an E2F-mimic motif and a pRb-binding LXCXE segment. Presence of such target-binding motifs in HPV16 E7 provides a reasonable explanation for its promiscuous target-binding behavior associated with its transforming activity.

• Asian Pacific Journal of Cancer Prevention
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• 제14권8호
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• pp.4865-4869
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• 2013

Background: The objectives of this present study were to assess the awareness of cervical cancer and its risk factors among female undergraduates in South Africa, and to determine the their level of acceptability of Human Papillomavirus (HPV) vaccination. Materials and Methods: This cross-sectional study was conducted in March 2013 among 440 full time undergraduate female students. Results: Of those students who never had sex (n=163), 96 (58.9%) had ever heard of cervical cancer and only 12 students (12.5%) knew that HPV causes cervical cancer. More than a third (35.4%) of the students correctly said that sexual intercourse before age of 18 years is a risk factor for cervical cancer and 55.2% of the students knew about the Pap smear test which is used for screening cervical cancer. The majority (77.3%) were willing to accept HPV vaccination. Results revealed that students who knew about the Pap smear test, and were aware that having multiple sex partners, sexual intercourse before the age of 18 years, smoking and having contracted any STDs are risk factors for cervical cancer were more likely to accept HPV vaccination compared to other groups. Conclusions: The general knowledge of South African female university students about cervical cancer is not sufficient but they have positive attitudes toward getting vaccinated with the HPV vaccine.

• Asian Pacific Journal of Cancer Prevention
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• 제13권5호
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• pp.2299-2304
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• 2012

Since there is evidence that human papillomavirus (HPV) may play some role in oral carcinogenesis, we investigated the presence of HPV in a group of Pakistani subjects with normal oral cavity using real-time PCR analysis. Two-hundred patients attending the Dental Department, Sandaman Provincial Hospital, Balochistan, Pakistan, were recruited. After interview, oral epithelial cells were collected by scraping and subjected to DNA extraction. The HPV-positive DNA samples were further analyzed using primer sets specific for HPV-16 and -18. It was found that out of 200 DNA samples, 192 were PCR-positive for the ${\beta}$-globin gene and these were subsequently examined for the presence of HPV DNA. Among these, 47 (24.5%) were HPV-positive with the virus copy number ranged between 0.43-32 copies per 1 ${\mu}g$ of total DNA (9-99 copies per PCR reaction). There were 4 and 11 samples containing HPV-16 and -18, respectively. Additionally, one sample harbored both types of HPV. Among the investigated clinical parameters, smoking habit was associated with the presence of HPV (p = 0.001) while others indicated no significant association. The prevalence of HPV in normal oral cavity in our Pakistani subjects appears to be comparable to other studies. However, the association between the presence of HPV and smoking warrants further investigations whether both of these factors can cooperate in inducing oral cancer in this group of patients.