• Asian Pacific Journal of Cancer Prevention
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• 제13권6호
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• pp.2643-2646
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• 2012

Objectives: Human papillomavirus (HPV) is the major etiological agent of cervical cancer, a leading cause of morbidity and mortality in women worldwide. Screening strategies for reducing the burden of HPV-mediated carcinogenesis are emerging as an effective means for cervical cancer control and prevention in developing countries. Our study, therefore, aimed to identify HPV infection status in North Indian women during random population screening. Methodology: Cervical/vaginal exfoliated cells and/or Pap smear specimens were collected from 890 women of North Indian ethnicity residing in Lucknow and adjoining areas, during random population screening from June 2009-March 2012. HPV viral loads in clinical specimens were determined by the Hybrid Capture (hc)-2 HPV DNA assay, and subsequently, positive/negative/borderline HPV status was calculated. Results: The HPV incidence in the present study was 11.7%. 751 out of a total of 890 women (84.4%) participating in our HPV screening program were HPV negative (HPV -), 104 (11.7%) tested positive (HPV +) while 35 (3.9%) showed borderline (HPV $^*$) infection status. Furthermore, in the HPV + subjects (N=104), 18 (17.3%) showed strong positivity. We observed that HPV positivity tends to increase with age in North Indian women; the higher the viral load with increasing age, higher is the susceptibility to HPV-mediated cervical cancer. Conclusions: HPV viral load/genotyping may help in identifying women at risk of developing cervical cancer. However, cost-effective HPV screening protocols with a wider population coverage are warranted so as to reduce the burden of cervical cancer in women worldwide in the vaccine-era.

• 대한임상검사과학회지
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• 제38권2호
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• pp.99-104
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• 2006

파필로마바이러스(Human papilloma virus; HPV)는 자궁경부암의 주요한 원인균으로 30종 이상의 여성성기감염과 관련된 유전자형이 보고되었으며 자궁경부암과 관련성이 높은 고위험군과 관련성이 낮은 저위험군으로 나뉘어 진다. 최근 HPV 유전자형의 임상적 활용이 높아짐에 따라 신속하고 정확하게 HPV 유전자형을 선별할 수 있는 방법이 요구되고 있다. 본 연구의 목적은 여러 가지 분자생물학적 방법 중에서 정확도가 높은 DNA 염기서열분석을 이용하여 한국인 여성에서 HPV의 유전자형분포와 빈도를 구하고자 하였다. 전국 각 지역의 3,978명으로부터 채취한 자궁경부 검체에서 DNA를 추출하고, HPV L1 유전자 영역에서 PCR을 실시하였다. PCR 양성이 나온 경우 DNA 염기서열분석을 실시하였으며 GenBank BLAST program을 이용하여 HPV 유전자형을 분석하였다. 검사대상의 평균 년령은 37.6세였으며 년령 범위는 20-73세였고, 30대 여성이 검사를 가장 많이 실시하였다(42.2%). 총 3.978명 중에서 1,174명(1,174/3,978, 29.5%)이 HPV 양성을 보였으며 136명(11.6%)이 중복감염을 보여, 총 1,310개의 HPV 유전자를 분석하였다. 본 연구에서는 21종의 고위험군, 16종의 저위험군을 포함하여 총 37종의 HPV 유전자형이 검출되었으며, HPV 고위험군의 빈도는 69.8%(914/1,310), 저위험군은 26.0% (340/1,310)로 나타났다. 년령은 20대에서 HPV 양성률이 가장 낮았으며(69.5%), 60대 이상의 검체에서 발견된 HPV는 대부분이 고위험군이었다. 고위험군에서는 HPV 16형이 13.21%로 가장 높게 나타났으며, HPV 53형이 9.62%, 58형이 9.24%로 높게 나타났다. 다음으로 HPV 70(5.50%), 33(4.73%), 66(4.20%), 18(4.05%), 52 (4.05%), 31(3.97%), 56(3.51%)의 순으로 나타났다. 저위험군에서는 HPV 62(4.20%), 61(3.89%), 6(3.59%), 81(3.59%), 84(3.51%), 11(2.6%)의 순으로 검출되었다. DNA 염기서열분석을 이용한 한국인 여성의 HPV 유전자형빈도 분석 결과는 HPV의 역학적 연구와 백신개발을 위한 자료로 유용할 것이며, 자궁경부암의 치료와 관련한 특이적 HPV 유전자형 관련 연구에 도움을 줄 것으로 사료된다.

• Asian Pacific Journal of Cancer Prevention
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• 제14권12호
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• pp.7371-7374
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• 2013

Aims: The study targeted the HPV vaccine knowledge and perceived risk of cervical cancer among female college students in Taiwan as well as the relationship between knowledge of the HPV vaccine and perceived risk of cervical cancer. Materials and Method: The results of this study on female college students are described using descriptive and correlation designs. A convenience sampling approach was employed with a self-filling structured questionnaire. Results: A total of 150 students completed the questionnaire. Values were 7.49 for the mean HPV vaccine knowledge scale and 18.0 for their mean perceived risk of cervical cancer scale. HPV vaccine knowledge was positively correlated with perceived risk of cervical cancer. Conclusions: The findings of this study can serve as a reference for future HPV prevention in Taiwan.

• 대한임상검사과학회지
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• 제43권1호
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• pp.26-31
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• 2011

The genotypes of Human Papilloma Virus (HPV) are important in the carcinogenesis of uterine cervical cancer. Diagnosis of uterine cervical cancer screening has been executed using Papanicolau method (Pap) and HPV DNA Chip method. We researched the interrelation of HPV DNA genotypes in single and multiple infections and analyzed the results of Pap and HPV DNA Chip tests at Gunsan Medical Center (GMC). The correlation analysis was surveyed on collected results from 599 patients who have been tested with both Pap and HPV DNA chip tests from November 2004 to May 2010 at GMC. The inconsistency between Pap and HPV DNA Chip tests was 41.1%. The HPV DNA Chip genotype related with high risk cases were type 16 (13.5%), type 52 (10.5%), type 58 (10.1%), and type 18 (3.4%). Those related with low risk cases were type 70 (8.9%), type 6 (1.7%), type 40 (1.2%), type 11 (1.3%), and other types (14.3%). Among the 195 cases of HPV positive status, 161 cases were associated with single infection; 108 (67.1%) cases were related with high risk genotype; 19 (11.8%) cases were low risk genotype; 31 (21.1%) cases were related with other types. 29 cases were associated with double infections; 23 (79.3%) cases were high risks; 5 (17.2%) cases were mixed high and low risks; 1 (3.5%) case was low risk.

• Asian Pacific Journal of Cancer Prevention
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• 제16권18호
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• pp.8495-8501
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• 2016

Purpose: This study was conducted to assess the agreement and differences between cervical self-sampling with a Kato device (KSSD) and gynecologist sampling for Pap cytology and human papillomavirus DNA (HPV DNA) detection. Materials and Methods: Women underwent self-sampling followed by gynecologist sampling during screening at two primary health clinics. Pap cytology of cervical specimens was evaluated for specimen adequacy, presence of endocervical cells or transformation zone cells and cytological interpretation for cells abnormalities. Cervical specimens were also extracted and tested for HPV DNA detection. Positive HPV smears underwent gene sequencing and HPV genotyping by referring to the online NCBI gene bank. Results were compared between samplings by Kappa agreement and McNemar test. Results: For Pap specimen adequacy, KSSD showed 100% agreement with gynecologist sampling but had only 32.3% agreement for presence of endocervical cells. Both sampling showed 100% agreement with only 1 case detected HSIL favouring CIN2 for cytology result. HPV DNA detection showed 86.2%agreement (K=0.64, 95% CI 0.524-0.756, p=0.001) between samplings. KSSD and gynaecologist sampling identified high risk HPV in 17.3% and 23.9% respectively (p=0.014). Conclusion: The self-sampling using Kato device can serve as a tool in Pap cytology and HPV DNA detection in low resource settings in Malaysia. Self-sampling devices such as KSSD can be used as an alternative technique to gynaecologist sampling for cervical cancer screening among rural populations in Malaysia.

• Asian Pacific Journal of Cancer Prevention
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• 제15권18호
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• pp.7693-7702
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• 2014

Background: Human papilloma virus (HPV) occurs in women of all age groups, and causes cervical, anal, vaginal, vulvar, penile and oropharyngeal cancers. The aim of the study was to discover what nurses know about HPV infection, testing and vaccination and to determine vaccine practice of their daughters and perceived barriers. Materials and Methods: This cross-sectional and prospective study was carried out nurses who have worked in a hospital between January and June 2014. Pre-test and post-test were used to evaluate the nurses' knowledge about HPV infection, testing and vaccination. This study was performed with nurses who had girls between 9 and 26 years of age for evaluating the behavior of vaccination after three months of education. Results: The mean of pre-test and post-test scores about HPV infection, which included 22 items, were $8.2{\pm}5.6$ and $19.2{\pm}1.5$, respectively. Before education the HPV testing knowledge score was remarkably poor ($1.9{\pm}1.7$ over 5), after education it increased to $4.8{\pm}0.5$. The mean HPV vaccine knowledge score were $3.7{\pm}2.7$ (pre-test) $7.3{\pm}0.8$ (post-test) on a 0-8 scale. The difference between mean total pre-test ($13.9{\pm}9.1$) and post-test ($31.3{\pm}1.9$) scores was statistically significant (p<0.001). After three months of education, only two of the nurses' daughters were vaccinated. The main reason was noted by nurses were not willing to be vaccinated was cost, doubts about safety and efficacy related to the vaccine. About one-third of nurses declared that they would receive the vaccine for their daughter later. Conclusions: Nurses have a crucial role in the prevention, treatment, increasing public awareness and care for population. The education of the nurses about HPV infection, test and vaccination will play an important part decreasing cancer mortality and morbidity.

• 대한임상검사과학회지
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• 제47권1호
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• pp.39-45
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• 2015

We investigated whether multiple infections can be used as predictors of progression to carcinogenesis in accordance with the cytological diagnosis in women receiving abnormal cytologic diagnosis as analysis genotype and compared to single infection. HPV prevalence is highest in the age of under 30 years old woman, HPV prevalence is started to lower after 30 years old and started to increase over 60 years old as like a U-shape. The specific HPV genotypes is an important factor because increased single infection and reduced multiple infections and appeared single infection with AC in progressing carcinogenesis. HPV 16 revealed the statistical significance at the single infection in squamous cell lesions, and HPV 18 revealed the statistical significance at the single infection in adenocarcinoma with showed HPV 16, 58, 18, 52-type distribution.

• 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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• 제15권9호
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• pp.3997-4003
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• 2014

Background: Infection with certain human papillomavirus (HPV) genotypes is the most important risk factor related with cervical cancer. The objective of the present study was to investigate the prevalence of HPV infection, the distribution of HPV genotypes and HPV E6/E7 oncogene mRNA expression in Turkish women with different cervical cytological findings in Mersin province, Southern Turkey. Materials and Methods: A total of 476 cytological samples belonging to women with normal and abnormal cervical Pap smears were enrolled in the study. For the detection and genotyping assay, a PCR/direct cycle sequencing approach was used. E6/E7 mRNA expression of HPV-16, 18, 31, 33, and 45 was determined by type-specific real-time NASBA assay (NucliSENS EasyQ$^{(R)}$HPV v1.1). Results: Of the 476 samples, 106 (22.3%) were found to be positive for HPV DNA by PCR. The presence of HPV was significantly more common (p<0.001) in HSIL (6/8, 75%) when compared with LSIL (6/14, 42.9%), ASC-US (22/74, 29.7%) and normal cytology (72/380, 18.9%). The most prevalent genotypes were, in descending order of frequency, HPV genotype 66 (22.6%), 16 (20.8%), 6 (14.2%), 31 (11.3%), 53 (5.7%), and 83 (4.7%). HPV E6/E7 oncogene mRNA positivity (12/476, 2.5%) was lower than DNA positivity (38/476, 7.9%). Conclusions: Our data present a wide distribution of HPV genotypes in the analyzed population. HPV genotypes 66, 16, 6, 31, 53 and 83 were the predominant types and most of them were potential carcinogenic types. Because of the differences between HPV E6/E7 mRNA and DNA positivity, further studies are required to test the role of mRNA testing in the triage of women with abnormal cervical cytology or follow up of HPV DNA positive and cytology negative. These epidemiological data will be important to determine the future impact of vaccination on HPV infected women in our region.

• Asian Pacific Journal of Cancer Prevention
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• 제15권19호
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• pp.8287-8293
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• 2014

Background: This study assessed human papillomavirus (HPV), cervical cancer, and HPV vaccine knowledge and awareness among women in two sub-populations in Nepal - Khokana, a traditional Newari village in the Lalitpur District about eight kilometers south of Kathmandu, and Sanphebagar, a village development committee within Achham District in rural Far-Western Nepal. Methods: Study participants were recruited during health camps conducted by Nepal Fertility Care Center, a Nepali non-governmental organization. Experienced staff administered a Nepali language survey instrument that included questions on socio-demographics, reproductive health and knowledge on HPV, cervical cancer, and the HPV vaccine. Results: Of the 749 participants, 387 (51.7%) were from Khokana and 362 (48.3%) were from Sanphebagar. Overall, 53.3% (n=372) of women were aware of cervical cancer with a significant difference between Khokana and Sanphebagar (63.3% vs 43.0%; p=0.001). Overall, 15.4% (n=107) of women had heard of HPV and 32% (n=34) of these women reported having heard of the HPV vaccine. If freely available, 77.5% of the women reported willingness to have their children vaccinated against HPV. Factors associated with cervical cancer awareness included knowledge of HPV (Khokana: Odds Ratio (OR)=24.5; (95% Confidence Interval (CI): 3.1-190.2, Sanphebagar: OR=14.8; 95% CI: 3.7-58.4)) and sexually transmitted infections (Khokana: OR=6.18; 95% CI: 3.1-12.4; Sanphebagar: OR=17.0; 95% CI: 7.3-39.7) among other risk factors. Conclusions: Knowledge and awareness of HPV, cervical cancer, and the HPV vaccine remains low among women in Khokana and Sanphebagar. Acceptance of a freely available HPV vaccine for children was high, indicating potentially high uptake rates in these communities.