• Title/Summary/Keyword: human papillomavirus (HPV)

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Should Male Circumcision be Advocated for Genital Cancer Prevention?

  • Morris, Brian J.;Mindel, Adrian;Tobian, Aaron A.R.;Hankins, Catherine A.;Gray, Ronald H.;Bailey, Robert C.;Bosch, Xavier;Wodak, Alex D.
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.9
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    • pp.4839-4842
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    • 2012
  • The recent policy statement by the Cancer Council of Australia on infant circumcision and cancer prevention and the announcement that the quadrivalent human papillomavirus (HPV) vaccine will be made available for boys in Australia prompted us to provide an assessment of genital cancer prevention. While HPV vaccination of boys should help reduce anal cancer in homosexual men and cervical cancer in women, it will have little or no impact on penile or prostate cancer. Male circumcision can reduce cervical, penile and possibly prostate cancer. Promotion of both HPV vaccination and male circumcision will synergistically maximize genital cancer prevention.

Update of Head and Neck Cancer Staging in the 8th Edition Cancer Staging Manual of the American Joint Committee on Cancer (두경부암 병기 설정의 최신 변화: AJCC 암 병기설정 매뉴얼8판)

  • Hong, Hyun Jun
    • Korean Journal of Head & Neck Oncology
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    • v.33 no.2
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    • pp.9-15
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    • 2017
  • The recently released the $8^{th}$ edition of the American Joint Committee on Cancer (AJCC) Staging Manual introduces significant modifications from the prior $7^{th}$ edition. In this paper, the contents of the new changes in the decision of cancer of the head and neck is summarized except changes in staging of skin and thyroid cancer. In addition to the 8th edition, 1) Addition of extracapsular involvement in metastatic lymph nodes (N category) 2) Oral cancer T classification change, 3) Staging of the pharyngeal cancer was divided into 3 chapters: high-risk human papilloma virus (HR-HPV) associated oropharyngeal cancer (OPC), non HR-HPV associated OPC and hypopharynx cancer (HPC), and nasopharynx cancer (NPC) 4) Changes in T and N classification in NPC, 5) In the case of cancer of unknown primary, P16-positive case is defined as HR-HPV related OPC, and EBV-positive case is defined as NPC. The process that led to these changes highlights the need to collect high-fidelity cancer registry-level data that can be used to confirm prognostic observations identified in institutional data sets. Clinicians will continue to use the latest information for patient care, including scientific content of the 8th Edition Manual. All newly diagnosed cases through December $31^{st}$ 2017 should be staged with the 7th edition. The time extension will allow all partners to develop and update protocols and guidelines and for software vendors to develop, test, and deploy their products in time for the data collection and implementation of the 8th edition in 2018. The 8th edition strikes a balance between a personalized, complex system and a more general, simpler one that maintains the user-friendliness and worldwide acceptability of the traditional TNM staging paradigm.

Mutation Detection of E6 and LCR Genes from HPV 16 Associated with Carcinogenesis

  • Mosmann, Jessica P.;Monetti, Marina S.;Frutos, Maria C.;Kiguen, Ana X.;Venezuela, Raul F.;Cuffini, Cecilia G.
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.3
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    • pp.1151-1157
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    • 2015
  • Human papillomavirus (HPV) is responsible for one of the most frequent sexually transmitted infections. The first phylogenetic analysis was based on a LCR region fragment. Nowadays, 4 variants are known: African (Af-1, Af-2), Asian-American (AA) and European (E). However the existence of sub-lineages of the European variant havs been proposed, specific mutations in the E6 and LCR sequences being possibly related to persistent viral infections. The aim of this study was a phylogenetic study of HPV16 sequences of endocervical samples from C${\acute{o}}$rdoba, in order to detect the circulating lineages and analyze the presence of mutations that could be correlated with malignant disease. The phylogenetic analysis determined that 86% of the samples belonged to the E variant, 7% to AF-1 and the remaining 7% to AF-2. The most frequent mutation in LCR sequences was G7521A, in 80% of the analyzed samples; it affects the binding site of a transcription factor that could contribute to carcinogenesis. In the E6 sequences, the most common mutation was T350G (L83V), detected in 67% of the samples, associated with increased risk of persistent infection. The high detection rate of the European lineage correlated with patterns of human migration. This study emphasizes the importance of recognizing circulating lineages, as well as the detection of mutations associated with high-grade neoplastic lesions that could be correlated to the development of carcinogenic lesions.

4 Cases of Traditional Korean Medicine Treatment for Patients with Surgical Margin Positive after LEEP in Cervical Intraepithelial Neoplasia (LEEP시술 절단면에 병변이 잔존하는 자궁경부상피내종양(CIN) 한의학적 치험 4례)

  • Lee, Eun;Lee, Kyung-yeob;Yu, Byung-kook
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.34 no.3
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    • pp.149-158
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    • 2020
  • The positive margins after LEEP(loop electrosurgical excision procedure) in cervical intraepithelial neoplasia are generally considered to be a risk factor for the recurrence or persistence of CIN currently. When positive margin exists, secondary LEEP or hysterectomy is performed. The aim of this study was to observe effects of Traditional Korean Medicine treatment for patients with surgical margin positive after LEEP. It was conducted retrospective chart review for 4 patients with the surgical margin positive after LEEP, who were scheduled to have secondary LEEP 3 months later. Patients were treated with herbal medicine, pharmacopuncture and herbal liquid vaginal treatment. They were followed up by cytology, colposcopy, human papillomavirus DNA test and punch-biopsy at 1, 3 and 6 months. After 3 month of treatment, three patients did not need secondary LEEP because of normal cytology, negative HPV status and normal colposcopy, while the other patient underwent secondary LEEP because of ASCUS cytology and positive high-risk HPV. After 6 month of treatment, the other patient also had normal cytology, negative HPV status and normal colposcopy and had been in fifth week of pregnancy. This study suggest that Traditional Korean Medicine treatment may be an effective to the patients with surgical margin positive after LEEP in cervical intraepithelial neoplasia.

Convergence factors influencing the human papillomavirus vaccination in some female university students (일부 여대생의 인유두종바이러스 백신 접종에 영향을 미치는 융복합적 예측요인)

  • Lee, Hye-Ran;Oh, Yun-Jung
    • Journal of Digital Convergence
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    • v.13 no.12
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    • pp.235-244
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    • 2015
  • This study was done to identify convergence factors influencing the HPV vaccination in female university students. The subjects of this study were 546 female university students. The data were collected through interviews using a structured questionnaire from 5 to 30th of October, 2013. 138(25.3%) reported that they were vaccinated. Religion, ever heard cervical cancer, HPV and cervical cancer vaccination, ever had a pap test, knowledge about HPV vaccination, health beliefs(total), perceived benefit, perceived barrier, cancer preventive behavior(total) and cervical cancer preventive behavior were associated with being vaccinated. In logistic regression analysis showed that the predictors are ever had a pap test(OR=34.67, 95% CI=17.19~ 69.92), perceived benefit(OR=1.45, 95% CI=1.17~1.81) and perceived barrier(OR=1.44, 95% CI=1.27~1.63). It was recommended to make convergence policy supports and education programs reinforcing a pap test and perceived benefit and reducing perceived barriers about HPV vaccination.

Detection of Human Papillomavirus in Male and Female Urine by Electrochemical DNA Chip and PCR Sequencing

  • Nilyanimit, Pornjarim;Wanlapakorn, Nasamon;Niruthisard, Somchai;Pohthipornthawat, Natkrita;Karalak, Anant;Laowahutanont, Piyawat;Phanuphak, Nittaya;Gemma, Nobuhiro;Poovorawan, Yong
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.9
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    • pp.5519-5525
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    • 2013
  • Background: Cervical cancer is the second most common cancer in Thai women after breast cancer. Currently, the Papanicolaou (Pap) smear is the recommended procedure for cervical cancer screening in Thailand, but only a relatively small percentage of women follow this screening program. An alternative method to detect HPV genotypes associated with cervical cancer is self-sampling of urine, which is a more widely accepted method. Our study aimed to evaluate the prevalence of HPV in Thai women using urine and cervical swabs and prevalence of HPV in Thai men using urine samples. Materials and Methods: Tumorigenic HPV detection was accomplished by electrochemical DNA chip and PCR/direct sequencing. In addition to HPV prevalence, we report the concordance between different methods and sample types. One-hundred and sixteen women and 100 men were recruited. Histological examination revealed normal cytology in 52 women, atypical squamous cells of undetermined significance (ASCUS) in 9, low-grade squamous intraepithelial lesions (LSIL) in 24, and high-grade squamous intraepithelial lesions (HSIL) in 31. One-hundred men were classified as heterosexuals (n=45) and homosexuals (n=55). Results: The most prevalent HPV genotype in our study was HPV16. The HPV detection rate was generally lower in urine samples compared with cervical samples. Overall, there was good agreement for the detection of carcinogenic HPV from female cervical samples between the DNA chip and PCR/sequencing, with 88.8% total agreement and a kappa value of 0.76. In male urine samples, the level of agreement was higher in heterosexuals compared with homosexuals. Conclusions: Further improvement is required to increase an overall yield of HPV DNA detection in urine samples before clinical application of a urine-based HPV screening program. The electrochemical DNA chip test is a promising technique for carcinogenic HPV detection.

A Case of Intractable Cervical Dysplasia Patient Treated with Korean Medicine for Three Months (3개월간 한방치료를 받은 난치성 자궁경부 이형증 환자 1례)

  • Han, Jae-Hyun;Kim, Sung-Su;Seong, Shin;Bang, Sun-Hwi
    • The Journal of Korean Obstetrics and Gynecology
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    • v.25 no.4
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    • pp.154-160
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    • 2012
  • Objectives: This report is aimed to investigate the efficacy of Korean medicine including intravenous Cultivated Wild Ginseng(Panax ginseng C.A. Meyer) Pharmacopuncture(CWGP) with intractable cervical dysplasia patient. Methods: A 49-year-old woman who was diagnosed as cervical dysplasia on Feb 2012 was treated with Korean medicine for 3 months. Korean medicine includes intravenous CWGP, acupuncture, moxibustion and herbal medicine. The effect of therapies was evaluated with human papillomavirus deoxyribonucleic acid(HPV DNA) testing. And lower limb cold sense and genital pruritus were recorded with Visual Analogue Scale(VAS). Results: Lower limb cold sense and genital pruritus were decreased from VAS 8-9(2012.04.11.) to VAS 1-2(2012.07.10.). HPV DNA test result was changed from positive to negative. From these results, this report suggests that the Korean medicine, especially CWGP may be a useful method to treat intractable cervical dysplasia. Conclusions: This report shows that Korean medical treatments are effective on intractable cervical dysplasia.

Silent High Grade Cervical Intraepithelial Neoplasia in Atypical Smears from Liquid Based Cervical Cytology - Three Years Experience in Thammasat University Hospital

  • Lertvutivivat, Supapen;Chanthasenanont, Athita;Muangto, Teerapat;Nanthakomon, Tongta;Pongrojpaw, Densak;Bhamarapravatana, Kornkarn;Suwannarurk, Komsun
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.9
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    • pp.4353-4356
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    • 2016
  • Purpose: To study the prevalence of CIN2+ diagnosis in women with atypical Papaniculoau (Pap) smears to suggest appropriate management option for Thai health care. Materials and Methods: Data from all patients with liquid based cytology with human papillomavirus (HPV) testing between May 2013 - May 2016 were collected from medical records. Women with atypical cervical Pap smears were recruited. Results for age, HPV testing, HPV 16, 18, 45 and other genotypes tested, colposcopic examination and histopathological assessment were all collected. Atypical smears were defined as atypical squamous cells of undetermined significance (ASC-US) and atypical squamous cells cannot be exclude high grade squamous intraepithelial lesion (ASC-H). Results: A total of 2,144 cases were recruited. Twenty six women with ASC-US on cytology had high risk (HR) HPV detection while eight cases with ASC-H had HR-HPV (40.0% VS 72.7%, p=0.005). Among the 26 women with ASC-US cytology and positive HR-HPV, HPV type 16 (n=8, 30.8%), type 18 (n=1, 3.8%), type 45 (n=1, 3.8%) and other HPV types (n=17, 65.4%) were found. Eight women with ASC-H and positive HR-HPV demonstrated type 16 (n=6, 75%) and other HPV types (n=2, 25%). Fifty seven women with ASC-US had normal colposcopy, CIN1 and CIN2+ at percentages of 80.7 (46/57), 14.0 (8/57) and 5.3 (3/57), respectively. In the ASC-H group, 7 out of 10 women had normal colposcopy and three (30%) had CIN2+ results. Conclusions: In women with ASC-US cytology, immediate colposcopy is highly recommended. HPV testing can be performed if colposcopy is not an available option because there was high prevalence (5.3%) of CIN2+ in our findings. ASCCP recommendations for ASC-H that colposcopy should be performed on all ASC-H cases regardless of HPV result are thereby supported by the findings of this investigation.

Multiple Sexual Partners as a Potential Independent Risk Factor for Cervical Cancer: a Meta-analysis of Epidemiological Studies

  • Liu, Zhi-Chang;Liu, Wei-Dong;Liu, Yan-Hui;Ye, Xiao-Hua;Chen, Si-Dong
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.9
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    • pp.3893-3900
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    • 2015
  • It's known that having multiple sexual partners is one of the risk factors of human papillomavirus (HPV) infection which is a major cause of cervical cancer. However, it is not clear whether the number of sexual partners is an independent risk factor for cervical cancer. We identified relevant studies by searching the databases of MEDLINE, PubMed and ScienceDirect published in English from January 1980 to January 2014. We analyzed those studies by combining the study-specific odds ratios (ORs) using random-effects models. Forty-one studies were included in this meta-analysis. We observed that the number of sexual partners was associated with the occurrence of non-malignant cervical disease (OR=1.82, 95%CI 1.63-2.00) and invasive cervical carcinoma (OR=1.77, 95%CI 1.50-2.05). Subgroup analyses revealed that the association remained significant after controlling for HPV infection (OR=1.52, 95%CI 1.21-1.83 for non-malignant disease; OR=1.53, 95%CI 1.30-1.76 for invasive cervical carcinoma). We found that there was a non-linear relation of the number of sexual partners with both non-malignant cervical disease and invasive cervical carcinoma. The risk of both malignant and non-malignant disease is relatively stable in women with more than 4-7 sexual partners. Furthermore, the frequency-risk of disease remained significant after controlling for HPV infection.The study suggested that h aving multiple sexual partners, with or without HPV infection, is a potential risk factor of cervical cancer.

Effect of an Educational Intervention on Knowledge of Human Papillomavirus Vaccination among Pre-University Students in Malaysia

  • Kwang, Ng Beng;Mahayudin, Tasneem;Yien, Hii Ling;Abdul Karim, Abdul Kadir;Teik, Chew Kah;Shan, Lim Pei
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.1
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    • pp.267-274
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    • 2016
  • Background: Cervical cancer is the fourth most common cancer among women worldwide. Studies evaluating the effect of health education on knowledge and perception of cervical cancer have generated conflicting results. Thus, this study aimed to evaluate the effect of educational intervention towards knowledge of HPV vacccination for cervical cancer prevention among pre-university students in Malaysia. Materials and Methods: This was an experimental before and after study performed between October 2014 and March 2015. Five hundred and eighty students were randomly assigned into intervention and control groups. All were required to complete both pre-intervention and post-intervention questionnaires. Those in the intervention group were given an information leaflet to read before answering the post-intervention questionnaire. Results: Almost half (48.3%) of the students had poor knowledge, with a score less than 5, and only 51 (8.8%) exhibited good knowledge, with a score of 11 and above. After educational intervention, the number of students with poor knowledge was reduced to 177 (29.3%) and the number of students who exhibited good knowledge increased to 148 (25.5%). Students from the intervention group demonstrated significant higher total scores in knowledge regarding 'HPV infection and cervical cancer' (p=0.000) and 'HPV vaccination and cervical cancer prevention' (p=0.000) during post-intervention as compared to the control group. Conclusions: Knowledge on HPV infection and vaccination is low among pre-university students. Educational intervention in the form of information leaflets appears effective in creating awareness and improving knowledge.