33 results on '"Jennifer S. Smith"'
Search Results
2. Recruitment strategies and HPV self-collection return rates for under-screened women for cervical cancer prevention
- Author
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Jennifer S. Smith, Olivia M. Vaz, Charley E. Gaber, Andrea C. Des Marais, Bhavika Chirumamilla, Lori Hendrickson, Lynn Barclay, Alice R. Richman, Xian Brooks, Anna Pfaff, and Noel T. Brewer
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Medicine ,Science - Abstract
In the United States, medically underserved women carry a heavier burden of cancer incidence and mortality, yet are largely underrepresented in cancer prevention studies. My Body, My Test is a n observational cohort, multi-phase cervical cancer prevention study in North Carolina that recruited low-income women, aged 30–65 years and who had not undergone Pap testing in ≥ 4 years. Participants were offered home-based self-collection of cervico-vaginal samples for primary HPV testing. Here, we aimed to describe the recruitment strategies utilized by study staff, and the resulting recruitment and self-collection kit return rates for each specific recruitment strategy. Participants were recruited through different approaches: either direct (active, staff-effort intensive) or indirect (passive on the part of study staff). Of a total of 1,475 individuals screened for eligibility, 695 were eligible (47.1%) and 487 (70% of eligible) participants returned their self-collection kit. Small media recruitment resulted in the highest number of individuals found to be study eligible, with a relatively high self-collection kit return of 70%. In-clinic in-reach resulted in a lower number of study-eligible women, yet had the highest kit return rate (90%) among those sent kits. In contrast, 211 recruitment which resulted in the lowest kit return of 54%. Small media, word of mouth, and face-to-face outreach resulted in self-collection kit return rates ranging from 72 to 79%. The recruitment strategies undertaken by study staff support the continued study of reaching under-screened populations into cervical cancer prevention studies.
- Published
- 2023
3. Patient perspectives on cervical cancer screening interventions among underscreened women
- Author
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Andrea C. Des Marais, Noel T. Brewer, Suzanne Knight, and Jennifer S. Smith
- Subjects
Medicine ,Science - Abstract
Background Cervical cancer is highly preventable with regular screening, yet over 4,000 women die from it annually in the United States. Over half of new cervical cancer cases in the U.S. are attributable to insufficient screening. Methods Participants were 23 low-income, uninsured or Medicaid-insured women in North Carolina who were overdue for cervical cancer screening according to national guidelines. Semi-structured interviews examined perspectives on barriers to cervical cancer screening and on interventions to reduce these barriers. We also elicited feedback on three proposed evidence-based interventions: one-on-one education, coupons to reduce out-of-pocket costs, and self-collection of samples for detection of high-risk human papillomavirus (HPV) infection, the primary cause of cervical cancer. Results Reported barriers included high cost, inconvenient clinic hours, lack of provider recommendation, poor transportation, difficulty finding a provider, fear of pain, and low perceived need. Participants suggested interventions including reducing cost, improving convenience through community-based screening or extended clinic hours, strengthening provider recommendations, and providing one-on-one counseling and education outreach. HPV self-collection was most frequently selected as the “most helpful” of 3 proposed interventions (n = 11), followed by reducing out-of-pocket costs (n = 7) and one-on-one education (n = 5). Conclusion Cost was the most reported barrier to cervical cancer screening, although women experience multiple simultaneous barriers. Novel interventions such as HPV self-collection promise to reduce some, but not all, barriers to primary screening. Interventions that work on reducing multiple barriers, including obstacles to receiving follow-up care, may be most effective to prevent cervical cancer among these high-risk women.
- Published
- 2022
4. Racial and ethnic differences in cervical cancer screening barriers and intentions: The My Body My Test-3 HPV self-collection trial among under-screened, low-income women
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Erica E. Zeno, Noel T. Brewer, Lisa P. Spees, Andrea C. Des Marais, Busola O. Sanusi, Michael G. Hudgens, Sarah Jackson, Lynn Barclay, Stephanie B. Wheeler, and Jennifer S. Smith
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Adult ,Multidisciplinary ,Papillomavirus Infections ,Humans ,Mass Screening ,Uterine Cervical Neoplasms ,Female ,Intention ,Middle Aged ,Poverty ,Early Detection of Cancer ,United States ,Aged - Abstract
Under-screened women are more likely to be diagnosed with invasive cervical cancer at later stages and have worse survival outcomes. Under- or un-insured women, low-income women, and minoritized groups face barriers to screening. Intention to screen is an indicator of future screening behavior, yet is understudied among low-income, under-screened women. Participants were 710 low-income, uninsured or publicly insured women ages 25–64 years in North Carolina who were not up to date on cervical cancer screening according to national guidelines. Participants were asked about barriers to screening and intention to screen. We estimated reported barriers to cervical cancer screening stratified by race and ethnicity (categorized as White, Black, and Hispanic) and assessed predictors of intention to screen. Sixty-one percent of all participants reported 5 or more barriers to screening. The most commonly reported reasons for not getting screened were lack of insurance (White: 71%, Black: 62%, Hispanic/Latina: 63%) and cost (White: 55%, Black: 44%, Hispanic/Latina: 61%). Women were more likely to have an intention to screen if they reported “it was not hard to get screening” (OR: 1.47 (1.00, 2.15)). Older women reported being less likely to intend to screen. Black women reported being more likely to intend to screen than White women. Lack of health insurance and cost were frequently reported barriers to cervical cancer screening. Increasing knowledge of affordable clinics and expanding access to Medicaid may reduce barriers and increase cervical cancer screening uptake.
- Published
- 2022
5. Detection of HPV E6 oncoprotein from urine via a novel immunochromatographic assay
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Michael P. Belmares, Marcelo Vieira, Cristina Mendes de Oliveira, Jennifer S. Smith, Johannes Schweizer, Fabiana de Lima Vazquez, Júlio César Possati-Resende, José Humberto Tavares Guerreiro Fregnani, Adhemar Longatto-Filho, Naitielle de Paula Pantano, and Laura W. Musselwhite
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Medical Doctors ,Physiology ,Health Care Providers ,Uterine Cervical Neoplasms ,Urine ,Pathology and Laboratory Medicine ,Cervical Cancer ,Gastroenterology ,Human Papillomavirus DNA Tests ,0302 clinical medicine ,Medicine and Health Sciences ,030212 general & internal medicine ,Medical Personnel ,Human Papillomavirus DNA Test ,Cervical cancer ,Immunoassay ,Human papillomavirus 16 ,Multidisciplinary ,Middle Aged ,female genital diseases and pregnancy complications ,Body Fluids ,DNA-Binding Proteins ,Professions ,Oncology ,Medical Microbiology ,030220 oncology & carcinogenesis ,Viral Pathogens ,Viruses ,Vagina ,Medicine ,Female ,Anatomy ,Pathogens ,Cancer Screening ,Research Article ,Adult ,medicine.medical_specialty ,Papillomaviruses ,Science ,Urinary system ,Concordance ,Microbiology ,Carcinomas ,HPV-16 ,03 medical and health sciences ,Signs and Symptoms ,Diagnostic Medicine ,Internal medicine ,Physicians ,medicine ,Carcinoma ,Cancer Detection and Diagnosis ,Humans ,Human papillomavirus ,Microbial Pathogens ,business.industry ,Papillomavirus Infections ,Organisms ,Cancer ,Biology and Life Sciences ,Human Papillomavirus ,Cancers and Neoplasms ,Oncogene Proteins, Viral ,medicine.disease ,Health Care ,Repressor Proteins ,People and Places ,Lesions ,Population Groupings ,business ,DNA viruses ,Gynecological Tumors - Abstract
Cervical cancer is a significant public health problem, especially in low- and middle-income countries, where women have little access to cervical cancer screening; consequently 80% of cervical cancer related mortality occurs in these regions. The development of screening methods that need less infrastructure thus represents an urgent medical need. The study aims to compare the detection rates of high-risk human papillomavirus 16 and 18 E6 oncoprotein in urine, vaginal self-collected, and cervical scrapes of women using the OncoE6™ Cervical Test and compare the HPV16 and/or HPV18 E6 detection rates with the HPV DNA testing. Paired urine, vaginal self-collected and cervical specimens were collected from 124 women who participated in cervical cancer screening or treatment in this proof-of-concept study and underwent to HPV16/18-E6 testing and high-risk HPV DNA testing prior to treatment of cervical neoplasia or cancer. Concordance between urinary, vaginal and cervical HPV16/18-E6 and HPV-DNA testing was evaluated for patients classified as negative group (
- Published
- 2020
6. Role of gender in perspectives of discrimination, stigma, and attitudes relative to cervical cancer in rural Sénégal
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Zola Collins, Abdoul Aziz Kasse, Youssoupha Ndiaye, Adama Faye, Natalia P. Ongtengco, Hamidou Thiam, Omar Gassama, Elly Lou De Jesus, Jennifer S. Smith, Tianxiu Wang, Caryn E. Peterson, Marian L. Fitzgibbon, Jon Andrew Dykens, Ellen Hendrix, and Babacar Gueye
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Male ,Rural Population ,Social stigma ,Social Stigma ,Cancer Treatment ,Uterine Cervical Neoplasms ,Social Sciences ,Rural Health ,Cervical Cancer ,0302 clinical medicine ,Sociology ,Surveys and Questionnaires ,Cancer screening ,Medicine and Health Sciences ,Mass Screening ,Psychology ,Public and Occupational Health ,030212 general & internal medicine ,education.field_of_study ,Multidisciplinary ,Gender Identity ,Social Discrimination ,Middle Aged ,Senegal ,Oncology ,Spouse ,Educational Status ,Medicine ,Female ,0305 other medical science ,Behavioral and Social Aspects of Health ,Attitude to Health ,Cancer Prevention ,Cancer Screening ,Research Article ,Adult ,Social Psychology ,Behavior change communication ,Gender Discrimination ,Science ,Population ,Decision Making ,Stigma (botany) ,Sexual and Gender Issues ,03 medical and health sciences ,Diagnostic Medicine ,Cancer Detection and Diagnosis ,Humans ,Social determinants of health ,education ,030505 public health ,Cancer prevention ,Social Influence ,Cancers and Neoplasms ,Biology and Life Sciences ,Cross-Sectional Studies ,Women's Health ,Gynecological Tumors ,Demography - Abstract
Cervical cancer is the leading cause of female cancer deaths in Senegal which is ranked 17th in incidence globally, however, the screening rate there is very low. Nuanced gendered perceptions and health behaviors of both women and men play a significant role in women's health. Our study analyzed gender differences on perceptions of gender roles, discrimination, cancer attitudes, cancer stigma, and influences in healthcare decision making within our study population to inform ongoing cervical cancer prevention work in the rural region of Kedougou, Senegal. We conducted a cross-sectional survey of 158 participants, 101 women and 57 men (ages 30-59) across nine non-probability-sampled communities from October 2018 through February 2019. Bivariate analysis was conducted to assess gender differences across all variables. We also conducted analyses to determine whether there were significant differences in beliefs and attitudes, by screening behavior and by education. We found significant gender differences regarding the perception of a woman's role (P < 0.001) and a man's role (P = 0.007) as well as in the everyday discrimination questions of "decreased respect by spouse" (P < 0.001). Regarding cancer stigma, among women, 18.00% disagreed and 10.00% strongly disagreed while among men, 3.6% disagreed and 1.8% strongly disagreed that "If I had cancer, I would want my family to know that I have it." When making decisions about one's healthcare, women are more likely than men to trust social contacts such as their spouse (46.5% vs 5.3%, p < 0.001) while men are more likely than women to trust health service personnel such as a nurse (50.9% vs 18.8%, p < 0.001). Furthermore, men and women were both more likely to state that men have the final decision regarding the healthcare decisions of women (p < 0.001). Our data reveal structural disadvantages for women within our study population as well as gender differences in the adapted everyday discrimination scale and cancer stigma scale. Higher rates of both personal and perceived cancer stigma among women has profound implications for how population and community level communication strategies for cancer prevention and control should be designed. Efforts to advance the goal of the elimination of cervical cancer should, in the short-term, seek to gain a more profound understanding of the ways that gender, language, and other social determinants impact negative social influences and other barriers addressable through interventions. Social and behavior change communication may be one approach that can focus both on education while seeking to leverage the social influences that exist in achieving immediate and long-term goals.
- Published
- 2020
7. Costs and cost-effectiveness of LEEP versus cryotherapy for treating cervical dysplasia among HIV-positive women in Johannesburg, South Africa
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Jane Phiri, Cynthia Firnhaber, Naomi Lince-Deroche, Craig van Rensburg, Jennifer S. Smith, Jacqueline Roseleur, Busola Sanusi, and Pam Michelow
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RNA viruses ,Viral Diseases ,Economics ,Cost effectiveness ,Biopsy ,Health Care Providers ,medicine.medical_treatment ,Cancer Treatment ,Social Sciences ,Nurses ,lcsh:Medicine ,Cryotherapy ,Pathology and Laboratory Medicine ,Geographical locations ,South Africa ,0302 clinical medicine ,Immunodeficiency Viruses ,Medicine and Health Sciences ,Medical Personnel ,030212 general & internal medicine ,Young adult ,lcsh:Science ,Cervical cancer ,Colposcopy ,Multidisciplinary ,medicine.diagnostic_test ,Obstetrics ,Cost-effectiveness analysis ,Professions ,Infectious Diseases ,Oncology ,Medical Microbiology ,Viral Pathogens ,030220 oncology & carcinogenesis ,Viruses ,Engineering and Technology ,Pathogens ,Research Article ,Human Papillomavirus Infection ,medicine.medical_specialty ,Urology ,Cost-Effectiveness Analysis ,Sexually Transmitted Diseases ,Equipment ,Surgical and Invasive Medical Procedures ,Microbiology ,03 medical and health sciences ,Colposcopic Biopsy ,Retroviruses ,medicine ,Microbial Pathogens ,Biology and life sciences ,Genitourinary Infections ,business.industry ,Lentivirus ,lcsh:R ,Organisms ,HIV ,medicine.disease ,Economic Analysis ,Health Care ,Clinical trial ,Africa ,People and Places ,Population Groupings ,lcsh:Q ,business - Abstract
Background Cervical cancer incidence is significant in countries, such as South Africa, with high burdens of both HIV and human papillomavirus (HPV). Cervical cancer is largely preventable if dysplasia is diagnosed and treated early, but there is debate regarding the best approaches for screening and treatment, especially for low-resource settings. Currently South Africa provides Pap smears followed by colposcopic biopsy and LEEP if needed in its public health facilities. We estimated the costs and cost-effectiveness of two approaches for treating cervical intraepithelial neoplasia grade 2 or higher (CIN2+) among HIV-infected women, most of whom were taking antiretroviral treatment, at a public HIV treatment facility in Johannesburg, South Africa. Methods Method effectiveness was derived from an intention-to-treat analysis of data gathered in a clinical trial completed previously at the study facility. In the trial, women who were diagnosed with CIN2+ and eligible for cryotherapy were randomized to cryotherapy or LEEP. If women were CIN2+ at six months as determined via Pap smear and colposcopic biopsy, all women-regardless of their original treatment assignment-received LEEP. "Cure" was then defined as the absence of disease at 12 months based on Pap smear and colposcopic biopsy. Health service costs were estimated using micro-costing between June 2013 and April 2014. Capital costs were annualized using a discount rate of 3%. Two different service volume scenarios were considered, and results from an as-treated analysis were considered in sensitivity analysis. Results In total, 166 women with CIN2+ were enrolled (86 had LEEP; 80 had cryotherapy). At 12 months, cumulative loss to follow-up was 12.8% (11/86) for the LEEP group and 13.8% (11/80) for cryotherapy. Based on the unadjusted intention-to-treat analysis conducted for this economic evaluation, there was no significant difference in efficacy. At 12 months, 83.8% (95% CI 73.8-91.1) of women with CIN2+ at baseline and randomized to cryotherapy were free of CIN2+ disease. In contrast, 76.7% (95% CI 66.4-85.2) of women assigned to LEEP were free from disease. On average, women initially treated with cryotherapy were less costly per patient randomized at US$ 118.00 (113.91-122.10), and per case "cured" at US$ 140.90 (136.01-145.79). Women in the LEEP group cost US$ 162.56 (157.90-167.22) per patient randomized and US$ 205.59 (199.70-211.49) per case cured. In the as-treated analysis, which was based on trial data, LEEP was more efficacious than cryotherapy; however, the difference was not significant. Cryotherapy remained more cost-effective than LEEP in all sensitivity and scenario analyses. Conclusions For this cost-effectiveness analysis, using an intention-to-treat approach and taking into consideration uncertainty in the clinical and cost outcomes, a strategy involving cryotherapy plus LEEP if needed at six months was dominant to LEEP plus LEEP again at six months if needed for retreatment. However, compared to other studies comparing LEEP and cryotherapy, the efficacy results were low in both treatment groups-possibly due to the HIV-positivity of the participants. Further research is needed, but at present choosing the "right" treatment option may be less important than ensuring access to treatment and providing careful monitoring of treatment outcomes.
- Published
- 2018
8. Facilitators and barriers to traditional medicine use among cancer patients in Malawi
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Satish Gopal, Ryan Seguin, Maria Chikasema, Jennifer S. Smith, Agness Manda, Jacob Hill, and Twambilile Phanga
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Complementary Therapies ,Male ,Malawi ,Culture ,Cancer Treatment ,Social Sciences ,Health Services Accessibility ,Geographical Locations ,0302 clinical medicine ,Sociology ,Neoplasms ,Medicine and Health Sciences ,Psychology ,030212 general & internal medicine ,Young adult ,Multidisciplinary ,Focus Groups ,Middle Aged ,Prognosis ,3. Good health ,Oncology ,030220 oncology & carcinogenesis ,Medicine ,Female ,Thematic analysis ,Social cognitive theory ,Research Article ,Adult ,medicine.medical_specialty ,Adolescent ,Science ,MEDLINE ,Young Adult ,03 medical and health sciences ,Complementary and Alternative Medicine ,Diagnostic Medicine ,Cancer Detection and Diagnosis ,medicine ,Humans ,Initial treatment ,Behavior ,Health Care Policy ,business.industry ,Public health ,Biology and Life Sciences ,Cancer ,Traditional Medicine ,medicine.disease ,Focus group ,Health Care ,Health Care Facilities ,Family medicine ,People and Places ,Africa ,Medicine, Traditional ,business - Abstract
BackgroundIncreasing access to conventional cancer treatment (CT) in low-income countries (LICs) is an important public health initiative to address the global burden of cancer. However, LICs have a high prevalence of use of traditional and complementary medicine (T&CM). It is important to consider the factors that influence a patient's choice to use T&CM, CT, or both for their cancer treatment.MethodsWe conducted focus groups among adult cancer patients in Lilongwe, Malawi to identify facilitators and barriers of T&CM use. Focus groups were recorded, transcribed, translated, and underwent thematic content analysis.ResultsCultural norms, T&CM access, T&CM success, and CT failure were all identified as facilitators to T&CM use. CT success and T&CM failure were identified as barriers. Access and norms appear to determine initial treatment selection, while treatment outcomes dictate continued use of T&CM or CT.ConclusionThis study identified a pragmatic and experience-based treatment selection process that aligns with the social cognitive theory of behavior and assists in comprehending the factors that influence T&CM use among cancer patients in a low resource setting.
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- 2019
- Full Text
- View/download PDF
9. Correction: Costs and cost-effectiveness of LEEP versus cryotherapy for treating cervical dysplasia among HIV-positive women in Johannesburg, South Africa
- Author
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Naomi Lince-Deroche, Craig van Rensburg, Jacqueline Roseleur, Busola Sanusi, Jane Phiri, Pam Michelow, Jennifer S. Smith, and Cindy Firnhaber
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Adult ,Vaginal Smears ,Multidisciplinary ,Cost-Benefit Analysis ,Papillomavirus Infections ,lcsh:R ,Electrosurgery ,Correction ,lcsh:Medicine ,Middle Aged ,Uterine Cervical Dysplasia ,Combined Modality Therapy ,Survival Analysis ,Random Allocation ,South Africa ,Young Adult ,Treatment Outcome ,Colposcopy ,Cryotherapy ,Antiretroviral Therapy, Highly Active ,Humans ,Female ,lcsh:Q ,lcsh:Science ,Papanicolaou Test - Abstract
Cervical cancer incidence is significant in countries, such as South Africa, with high burdens of both HIV and human papillomavirus (HPV). Cervical cancer is largely preventable if dysplasia is diagnosed and treated early, but there is debate regarding the best approaches for screening and treatment, especially for low-resource settings. Currently South Africa provides Pap smears followed by colposcopic biopsy and LEEP if needed in its public health facilities. We estimated the costs and cost-effectiveness of two approaches for treating cervical intraepithelial neoplasia grade 2 or higher (CIN2+) among HIV-infected women, most of whom were taking antiretroviral treatment, at a public HIV treatment facility in Johannesburg, South Africa.Method effectiveness was derived from an intention-to-treat analysis of data gathered in a clinical trial completed previously at the study facility. In the trial, women who were diagnosed with CIN2+ and eligible for cryotherapy were randomized to cryotherapy or LEEP. If women were CIN2+ at six months as determined via Pap smear and colposcopic biopsy, all women-regardless of their original treatment assignment-received LEEP. "Cure" was then defined as the absence of disease at 12 months based on Pap smear and colposcopic biopsy. Health service costs were estimated using micro-costing between June 2013 and April 2014. Capital costs were annualized using a discount rate of 3%. Two different service volume scenarios were considered, and results from an as-treated analysis were considered in sensitivity analysis.In total, 166 women with CIN2+ were enrolled (86 had LEEP; 80 had cryotherapy). At 12 months, cumulative loss to follow-up was 12.8% (11/86) for the LEEP group and 13.8% (11/80) for cryotherapy. Based on the unadjusted intention-to-treat analysis conducted for this economic evaluation, there was no significant difference in efficacy. At 12 months, 83.8% (95% CI 73.8-91.1) of women with CIN2+ at baseline and randomized to cryotherapy were free of CIN2+ disease. In contrast, 76.7% (95% CI 66.4-85.2) of women assigned to LEEP were free from disease. On average, women initially treated with cryotherapy were less costly per patient randomized at US$ 118.00 (113.91-122.10), and per case "cured" at US$ 140.90 (136.01-145.79). Women in the LEEP group cost US$ 162.56 (157.90-167.22) per patient randomized and US$ 205.59 (199.70-211.49) per case cured. In the as-treated analysis, which was based on trial data, LEEP was more efficacious than cryotherapy; however, the difference was not significant. Cryotherapy remained more cost-effective than LEEP in all sensitivity and scenario analyses.For this cost-effectiveness analysis, using an intention-to-treat approach and taking into consideration uncertainty in the clinical and cost outcomes, a strategy involving cryotherapy plus LEEP if needed at six months was dominant to LEEP plus LEEP again at six months if needed for retreatment. However, compared to other studies comparing LEEP and cryotherapy, the efficacy results were low in both treatment groups-possibly due to the HIV-positivity of the participants. Further research is needed, but at present choosing the "right" treatment option may be less important than ensuring access to treatment and providing careful monitoring of treatment outcomes.
- Published
- 2019
- Full Text
- View/download PDF
10. Costs and Cost Effectiveness of Three Approaches for Cervical Cancer Screening among HIV-Positive Women in Johannesburg, South Africa
- Author
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Jennifer S. Smith, Cynthia Firnhaber, Jane Phiri, Naomi Lince-Deroche, and Pam Michelow
- Subjects
Adult ,medicine.medical_specialty ,Adolescent ,Cost effectiveness ,Cost-Benefit Analysis ,Population ,Uterine Cervical Neoplasms ,lcsh:Medicine ,HIV Infections ,Validation Studies as Topic ,Cervical intraepithelial neoplasia ,South Africa ,Young Adult ,Cancer screening ,medicine ,Humans ,Mass Screening ,False Positive Reactions ,education ,lcsh:Science ,Papillomaviridae ,Mass screening ,Average cost ,Early Detection of Cancer ,health care economics and organizations ,Acetic Acid ,Aged ,Gynecology ,Cervical cancer ,Vaginal Smears ,education.field_of_study ,Multidisciplinary ,business.industry ,Coinfection ,Papillomavirus Infections ,lcsh:R ,Cost-effectiveness analysis ,Health Care Costs ,Middle Aged ,medicine.disease ,Uterine Cervical Dysplasia ,Colposcopy ,DNA, Viral ,Female ,lcsh:Q ,business ,Demography ,Research Article ,Papanicolaou Test - Abstract
Background South Africa has high rates of HIV and HPV and high incidence and mortality from cervical cancer. However, cervical cancer is largely preventable when early screening and treatment are available. We estimate the costs and cost-effectiveness of conventional cytology (Pap), visual inspection with acetic acid (VIA) and HPV DNA testing for detecting cases of CIN2+ among HIV-infected women currently taking antiretroviral treatment at a public HIV clinic in Johannesburg, South Africa. Methods Method effectiveness was derived from a validation study completed at the clinic. Costs were estimated from the provider perspective using micro-costing between June 2013-April 2014. Capital costs were annualized using a discount rate of 3%. Two different service volume scenarios were considered. Threshold analysis was used to explore the potential for reducing the cost of HPV DNA testing. Results VIA was least costly in both scenarios. In the higher volume scenario, the average cost per procedure was US$ 3.67 for VIA, US$ 8.17 for Pap and US$ 54.34 for HPV DNA. Colposcopic biopsies cost on average US$ 67.71 per procedure. VIA was least sensitive but most cost-effective at US$ 17.05 per true CIN2+ case detected. The cost per case detected for Pap testing was US$ 130.63 using a conventional definition for positive results and US$ 187.52 using a more conservative definition. HPV DNA testing was US$ 320.09 per case detected. Colposcopic biopsy costs largely drove the total and per case costs. A 71% reduction in HPV DNA screening costs would make it competitive with the conservative Pap definition. Conclusions Women need access to services which meet their needs and address the burden of cervical dysplasia and cancer in this region. Although most cost-effective, VIA may require more frequent screening due to low sensitivity, an important consideration for an HIV-positive population with increased risk for disease progression.
- Published
- 2015
11. Cross-Sectional Associations between Body Size, Circulating Sex-Steroid Hormones and IGF Components among Healthy Chinese Women
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Li Liu, Qiong Wang, Lauren E. McCullough, Jia Yuan Li, Erline E. Miller, Hui Li, Jennifer S. Smith, and Jing Zhang
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Adult ,medicine.medical_specialty ,China ,Cross-sectional study ,Physiology ,lcsh:Medicine ,Body Mass Index ,Waist–hip ratio ,Breast cancer ,Sex hormone-binding globulin ,Internal medicine ,Sex Hormone-Binding Globulin ,medicine ,Humans ,Testosterone ,Prospective Studies ,Insulin-Like Growth Factor I ,Prospective cohort study ,lcsh:Science ,Progesterone ,2. Zero hunger ,Multidisciplinary ,biology ,Estradiol ,business.industry ,Waist-Hip Ratio ,Body Weight ,lcsh:R ,Anthropometry ,Middle Aged ,medicine.disease ,Obesity ,3. Good health ,Endocrinology ,Cross-Sectional Studies ,Insulin-Like Growth Factor Binding Protein 3 ,biology.protein ,Women's Health ,Female ,lcsh:Q ,business ,Body mass index ,Research Article - Abstract
The incidence of breast cancer has increased in Asian countries and rates of hormone receptor (HR) negative breast cancer exceed those of Western countries. Epidemiologic data suggest that the association between body size and BC risk may vary by HR status, and could differ geographically. While body size may influence BC risk by moderating the synthesis and metabolism of circulating sex-steroid hormones, insulin-like growth factor (IGF)-1 and related binding proteins, there is a dearth of literature among Asian women. We aimed to examine these specific associations in a sample of Chinese women. In Sichuan Province 143 women aged ≥40 years were recruited through outpatient services (2011-2012). Questionnaires, anthropometric measurements, and blood samples were utilized for data collection and linear regression was applied in data analyses. Among women
- Published
- 2015
12. Developing the Evidence Base to Inform Best Practice: A Scoping Study of Breast and Cervical Cancer Reviews in Low- and Middle-Income Countries
- Author
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Haq Nawaz, Mehran S. Massoudi, Scott McIntosh, Thomas T. Fogg, Rachel Blumenfeld, J. Andrew Dykens, Ann Dozier, Karen E. Peters, Mahmooda Khaliq, Jennifer S. Smith, Angela Sy, Timothy D. Dye, Tracy Irwin, and Margaret Demment
- Subjects
medicine.medical_specialty ,Biomedical Research ,Science ,MEDLINE ,Uterine Cervical Neoplasms ,Breast Neoplasms ,CINAHL ,Breast cancer ,Humans ,Medicine ,Developing Countries ,Early Detection of Cancer ,Gynecology ,Cervical cancer ,Multidisciplinary ,Cancer prevention ,business.industry ,Cancer ,medicine.disease ,3. Good health ,Review article ,Review Literature as Topic ,Systematic review ,Family medicine ,Practice Guidelines as Topic ,Female ,business ,Research Article - Abstract
BackgroundBreast and cervical cancers have emerged as major global health challenges and disproportionately lead to excess morbidity and mortality in low- and middle-income countries (LMICs) when compared to high-income countries. The objective of this paper was to highlight key findings, recommendations, and gaps in research and practice identified through a scoping study of recent reviews in breast and cervical cancer in LMICs.MethodsWe conducted a scoping study based on the six-stage framework of Arskey and O'Malley. We searched PubMed, Cochrane Reviews, and CINAHL with the following inclusion criteria: 1) published between 2005-February 2015, 2) focused on breast or cervical cancer 3) focused on LMIC, 4) review article, and 5) published in English.ResultsThrough our systematic search, 63 out of the 94 identified cervical cancer reviews met our selection criteria and 36 of the 54 in breast cancer. Cervical cancer reviews were more likely to focus upon prevention and screening, while breast cancer reviews were more likely to focus upon treatment and survivorship. Few of the breast cancer reviews referenced research and data from LMICs themselves; cervical cancer reviews were more likely to do so. Most reviews did not include elements of the PRISMA checklist.ConclusionOverall, a limited evidence base supports breast and cervical cancer control in LMICs. Further breast and cervical cancer prevention and control studies are necessary in LMICs.
- Published
- 2015
13. Associations between methylation of paternally expressed gene 3 (PEG3), cervical intraepithelial neoplasia and invasive cervical cancer
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Zhiqing Huang, Cathrine Hoyo, Britta Swai, B. Vasquez, Olola Oneko, Jennifer S. Smith, Marilie D. Gammon, Pendo Mlay, Frances Wang, Brenda Y. Hernandez, Adriana C. Vidal, Joseph Obure, Susan K. Murphy, Francine Overcash, John Bartlett, and Monica D. Nye
- Subjects
Oncology ,Epidemiology ,Uterine Cervical Neoplasms ,lcsh:Medicine ,Cervical Cancer ,Tanzania ,0302 clinical medicine ,Risk Factors ,Odds Ratio ,lcsh:Science ,Cancer ,Cervical cancer ,0303 health sciences ,Multidisciplinary ,HPV infection ,Methylation ,Middle Aged ,Prognosis ,3. Good health ,030220 oncology & carcinogenesis ,Genetic Epidemiology ,DNA methylation ,Medicine ,Female ,Epigenetics ,DNA modification ,Research Article ,Adult ,medicine.medical_specialty ,Kruppel-Like Transcription Factors ,Biology ,Cervical intraepithelial neoplasia ,Infectious Disease Epidemiology ,Diagnosis, Differential ,03 medical and health sciences ,Young Adult ,Genomic Imprinting ,Internal medicine ,medicine ,Genetics ,Humans ,Neoplasm Invasiveness ,030304 developmental biology ,Aged ,Gynecology ,Population Biology ,Papillomavirus Infections ,lcsh:R ,Case-control study ,Cancers and Neoplasms ,Odds ratio ,DNA Methylation ,medicine.disease ,Uterine Cervical Dysplasia ,Differentially methylated regions ,Logistic Models ,Case-Control Studies ,Multivariate Analysis ,lcsh:Q ,Gynecological Tumors ,Developmental Biology - Abstract
Cytology-based screening for invasive cervical cancer (ICC) lacks sensitivity and specificity to discriminate between cervical intraepithelial neoplasia (CIN) likely to persist or progress from cases likely to resolve. Genome-wide approaches have been used to identify DNA methylation marks associated with CIN persistence or progression. However, associations between DNA methylation marks and CIN or ICC remain weak and inconsistent. Between 2008-2009, we conducted a hospital-based, case-control study among 213 Tanzania women with CIN 1/2/3 or ICC. We collected questionnaire data, biopsies, peripheral blood, cervical scrapes, Human papillomavirus (HPV) and HIV-1 infection status. We assessed PEG3 methylation status by bisulfite pyrosequencing. Multinomial logistic regression was used to estimate odds ratios (OR) and confidence intervals (CI 95%) for associations between PEG3 methylation status and CIN or ICC. After adjusting for age, gravidity, hormonal contraceptive use and HPV infection, a 5% increase in PEG3 DNA methylation was associated with increased risk for ICC (OR = 1.6; 95% CI 1.2-2.1). HPV infection was associated with a higher risk of CIN1-3 (OR = 15.7; 95% CI 5.7-48.6) and ICC (OR = 29.5, 95% CI 6.3-38.4). Infection with high risk HPV was correlated with mean PEG3 differentially methylated regions (DMRs) methylation (r = 0.34 p
- Published
- 2013
14. Prospective One Year Follow Up of HIV Infected Women Screened for Cervical Cancer Using Visual Inspection with Acetic Acid, Cytology and Human Papillomavirus Testing in Johannesburg South Africa
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Simon Levin, Tanvier Omar, Jennifer S. Smith, Sibongile Rameotshela, Sophie Williams, Pam Michelow, Avril Swarts, Kate Schnippel, Anna-Lise Williamson, Bridgette Goeieman, Bruce Allan, Cynthia Firnhaber, Mark Faesen, Division of Virology, and Faculty of Health Sciences
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Human papillomavirus infection ,Biopsy ,lcsh:Medicine ,Uterine Cervical Neoplasms ,HIV Infections ,Comorbidity ,South Africa ,0302 clinical medicine ,Risk Factors ,Cancer screening ,030212 general & internal medicine ,Papillomaviridae ,lcsh:Science ,Early Detection of Cancer ,Acetic Acid ,Cervical cancer ,education.field_of_study ,Multidisciplinary ,biology ,Obstetrics ,virus diseases ,Middle Aged ,female genital diseases and pregnancy complications ,3. Good health ,030220 oncology & carcinogenesis ,Carcinoma, Squamous Cell ,Disease Progression ,symbols ,Female ,Research Article ,Papanicolaou Test ,Adult ,Human papillomavirus ,medicine.medical_specialty ,Histology ,Population ,Cervical intraepithelial neoplasia ,03 medical and health sciences ,symbols.namesake ,Atypical Squamous Cells of the Cervix ,medicine ,Humans ,Poisson regression ,education ,Screening guidelines ,Gynecology ,Health Services Needs and Demand ,Staining and Labeling ,business.industry ,lcsh:R ,Papillomavirus Infections ,Cancer ,Uterine Cervical Dysplasia ,biology.organism_classification ,medicine.disease ,lcsh:Q ,Cytology ,business ,Follow-Up Studies - Abstract
BACKGROUND: Cervical cancer is the most common cancer in Sub-Saharan Africa. There are little of HIV-infected women one-year after screening using visual inspection with acetic acid (VIA), HPV or cytology in sub-Saharan Africa. METHODS: HIV-infected women in Johannesburg South Africa were screened one year later by Pap smear, VIA and human papillomavirus (HPV) testing. Women qualified for the 12 month follow-up visit if they had a negative or cervical intra-epithelial neoplasia (CIN) 1 results at the baseline visit. Modified Poisson regression was used to analyse associations between patient baseline characteristics and progression. RESULTS: A total of 688 of 1,202 enrolled at baseline study who were CIN-2+ negative and qualified for a 12 month follow-up visit. Progression to CIN-2+ was higher in women with positive VIA results (12.6%; 24/191) than those VIA-negative (4.4%; 19/432). HPV-positive women at baseline were more likely to progress to CIN-2+ (12.3%; 36/293) than those HPV-negative (2.1%; 7/329). Cytology-positive women at baseline were more likely to progress to CIN-2+ (9.6%; 37/384) than cytology-negative women (2.5%; 6/237). Approximately 10% (10.4%; 39/376) of women with CIN 1 at baseline progressed to CIN 2+. Women who were VIA or HPV positive at baseline were more likely to progress aIRR 1.85, CI 95% (1.46 to 2.36), aIRR 1.41 CI 95% (1.14 to 1.75) respectively. CONCLUSION: Progression to CIN-2+ in HIV-infected women is significant when measured by baseline positive VIA, HPV or Pap and yearly screening by any method should be considered in this population if possible.
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- 2016
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15. Validation of cervical cancer screening methods in HIV positive women from Johannesburg South Africa
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Michael G. Hudgens, Sophie Williams, Cynthia Firnhaber, Avril Swarts, Jennifer S. Smith, Anna-Lise Williamson, Simon Levin, Bruce Allan, Lu Mao, Pam Michelow, Nomtha Mayisela, Tanvier Omar, David A. Lewis, Mark Faesen, Division of Virology, and Faculty of Health Sciences
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Viral Diseases ,Health Screening ,Quality Assurance, Health Care ,Cross-sectional study ,Gynecologic Infections ,lcsh:Medicine ,Nurses ,Uterine Cervical Neoplasms ,Cervical cancer screening ,South Africa ,0302 clinical medicine ,Cancer screening ,HIV Seropositivity ,Medicine ,030212 general & internal medicine ,Young adult ,lcsh:Science ,Early Detection of Cancer ,Colposcopy ,Cervical cancer ,education.field_of_study ,Multidisciplinary ,medicine.diagnostic_test ,Obstetrics ,virus diseases ,Obstetrics and Gynecology ,Middle Aged ,female genital diseases and pregnancy complications ,3. Good health ,Infectious Diseases ,Female Genital Diseases ,Oncology ,030220 oncology & carcinogenesis ,Female ,Public Health ,Cancer Prevention ,HIV infections ,Research Article ,Adult ,medicine.medical_specialty ,Human papillomavirus ,Histology ,Adolescent ,Population ,Sexually Transmitted Diseases ,Sensitivity and Specificity ,03 medical and health sciences ,Young Adult ,Cancer Detection and Diagnosis ,Humans ,education ,Aged ,Demography ,Gynecology ,business.industry ,lcsh:R ,Gynecologic Cancers ,Cancer ,HIV ,Reproducibility of Results ,medicine.disease ,lcsh:Q ,Preventive Medicine ,business ,Cytology - Abstract
BACKGROUND: HIV-infected women are at increased risk for developing cervical cancer. Women living in resource-limited countries are especially at risk due to poor access to cervical cancer screening and treatment. We evaluated three cervical cancer screening methods to detect cervical intraepithelial neoplasia grade 2 and above (CIN 2+) in HIV-infected women in South Africa; Pap smear, visual inspection with 5% acetic acid (VIA) and human papillomavirus detection (HPV). METHODS: HIV-infected women aged 18-65 were recruited in Johannesburg. A cross-sectional study evaluating three screening methods for the detection of the histologically-defined gold standard CIN-2 + was performed. Women were screened for cervical abnormalities with the Digene HC2 assay (HPV), Pap smear and VIA. VIA was performed by clinic nurses, digital photographs taken and then later reviewed by specialist physicians. The sensitivity, specificity and predictive valves for CIN-2 + were calculated using maximum likelihood estimators. RESULTS: 1,202 HIV-infected women participated, with a median age of 38 years and CD4 counts of 394 cells/mm 3 . One third of women had a high grade lesion on cytology. VIA and HPV were positive in 45% and 61% of women respectively. Estimated sensitivity/specificity for HPV, Pap smear and VIA for CIN 2+ was 92%/51.4%, 75.8%/83.4% and 65.4/68.5% (nurse reading), respectively. Sensitivities were similar, and specificities appeared significantly lower for the HPV test, cytology and VIA among women with CD4 counts ≤200 cells/mm 3 as compared to CD4 counts >350 cells/mm 3 . CONCLUSIONS: Although HPV was the most sensitive screening method for detecting CIN 2+, it was less specific than conventional cytology and VIA with digital imaging review. Screening programs may need to be individualized in context of the resources and capacity in each area.
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- 2012
16. Knowledge and acceptability of pap smears, self-sampling and HPV vaccination among adult women in Kenya
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Romel D. Mackelprang, Robert Y. Choi, James Kiarie, Carey Farquhar, Ann Gatuguta, Anne F. Rositch, Brandon L. Guthrie, Jennifer S. Smith, Lucy Manyara, and Rose Bosire
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Health Knowledge, Attitudes, Practice ,Viral Diseases ,Health Screening ,Epidemiology ,Culture ,lcsh:Medicine ,Cervical Cancer ,0302 clinical medicine ,Cancer screening ,Mass Screening ,030212 general & internal medicine ,lcsh:Science ,Cervical cancer ,education.field_of_study ,Multidisciplinary ,Obstetrics ,Vaccination ,Obstetrics and Gynecology ,3. Good health ,Infectious Diseases ,Oncology ,030220 oncology & carcinogenesis ,Cohort ,Medicine ,Female ,Public Health ,Sample collection ,Behavioral and Social Aspects of Health ,Cancer Prevention ,Cancer Epidemiology ,Cancer Screening ,Papanicolaou Test ,Research Article ,Adult ,Human Papillomavirus Infection ,medicine.medical_specialty ,Clinical Research Design ,Population ,Sexually Transmitted Diseases ,Cancer Vaccines ,Specimen Handling ,03 medical and health sciences ,Cancer Detection and Diagnosis ,medicine ,Humans ,Medical history ,Papillomavirus Vaccines ,education ,Mass screening ,Vaginal Smears ,Gynecology ,Survey Research ,Cancer prevention ,Genitourinary Infections ,business.industry ,lcsh:R ,Cancers and Neoplasms ,Patient Acceptance of Health Care ,medicine.disease ,Kenya ,lcsh:Q ,business ,Gynecological Tumors - Abstract
Objectives Our study aimed to assess adult women’s knowledge of human papillomavirus (HPV) and cervical cancer, and characterize their attitudes towards potential screening and prevention strategies. Methods Women were participants of an HIV-discordant couples cohort in Nairobi, Kenya. An interviewer-administered questionnaire was used to obtain information on sociodemographic status, and sexual and medical history at baseline and on knowledge and attitudes towards Pap smears, self-sampling, and HPV vaccination at study exit. Results Only 14% of the 409 women (67% HIV-positive; median age 29 years) had ever had a Pap smear prior to study enrollment and very few women had ever heard of HPV (18%). Although most women knew that Pap smears detect cervical cancer (69%), very few knew that routine Pap screening is the main way to prevent ICC (18%). Most women reported a high level of cultural acceptability for Pap smear screening and a low level of physical discomfort during Pap smear collection. In addition, over 80% of women reported that they would feel comfortable using a self-sampling device (82%) and would prefer at-home sample collection (84%). Nearly all women (94%) reported willingness to be vaccinated to prevent cervical cancer if offered at no or low cost. Conclusions These findings highlight the need to educate women on routine use of Pap smears in the prevention of cervical cancer and demonstrate that vaccination and self-sampling would be acceptable modalities for cervical cancer prevention and screening.
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- 2012
17. Genetic and Dietary Determinants of Insulin-Like Growth Factor (IGF)-1 and IGF Binding Protein (BP)-3 Levels among Chinese Women
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Li Liu, Ya Na Qi, Erline E. Miller, Chun Xia Yang, Qiong Wang, Jia Yuan Li, Jennifer S. Smith, Jing Zhang, Hui Li, and Lauren E. McCullough
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Adult ,China ,medicine.medical_specialty ,Adolescent ,Epidemiology ,media_common.quotation_subject ,medicine.medical_treatment ,lcsh:Medicine ,Polymorphism, Single Nucleotide ,chemistry.chemical_compound ,Insulin-like growth factor ,Breast cancer ,Asian People ,Polymorphism (computer science) ,Internal medicine ,Genotype ,Medicine and Health Sciences ,medicine ,Humans ,Insulin-Like Growth Factor I ,Allele ,lcsh:Science ,Demography ,media_common ,Molecular Epidemiology ,Multidisciplinary ,business.industry ,Reproduction ,lcsh:R ,Middle Aged ,Isoflavones ,medicine.disease ,Chinese people ,Diet ,Insulin-Like Growth Factor Binding Protein 3 ,Endocrinology ,chemistry ,Female ,lcsh:Q ,business ,Cancer Epidemiology ,Research Article - Abstract
Background Higher insulin-like growth factor (IGF)-1 and lower IGF binding protein (BP)-3 levels have been associated with higher commoncancer risk, including breast cancer. Dietary factors, genetic polymorphisms, and the combination of both may influence circulating IGF-1 and IGFBP-3 serum concentrations. Methods From September 2011 to July 2012, we collected demographic, reproductive and dietary data on 143 women (≥40 years). We genotyped IGF-1 rs1520220 and IGFBP-3 rs2854744 and measured circulating IGF-1 and IGFBP-3 levels in serum. Covariance analyses were used to estimate the associations of serum levels of IGF-1 and IGFBP-3, and the molar ratio of IGF-1to IGFBP-3 with IGF-1 rs1520220 and IGFBP-3 rs2854744 genotypes. We subsequently assessed the combined influence of genetics and diet (daily intake of protein, fat and soy isoflavones) on IGF-1 and IGFBP-3 levels. Results Among women aged less than 50 years, circulating IGF-1 serum levels were significantly lower for those with CC genotype for IGF-1 rs1520220 than levels for those with the GC or GG genotypes (in recessive model: P = 0.007).In gene-diet analyses among these women, we found carrying CC genotype for IGF-1 rs1520220 and high soy isoflavone intake tend to be associated with lower circulating IGF-1 levels synthetically (P = 0.002). Women with GG or GC genotypes for IGF-1 rs1520220 and with low intake of soy isoflavones had the highest levels of circulating IGF-1 (geometric mean [95% CI]: 195 [37, 1021] µg/L). Comparatively, women with both the CC genotype and high soy intake had the lowest levels of circulating IGF-1 (geometric mean [95% CI]: 120 [38,378] µg/L). Conclusions IGF-1 serum levels are significantly lower among women with the CC genotype for IGF-1-rs1520220. High soy isoflavone intake may interact with carrying CC genotype for IGF-1-rs1520220 to lower women's serum IGF-1 levels more.
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- 2014
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18. Assessment of High-Risk Human Papillomavirus Infections Using Clinician- and Self-Collected Cervical Sampling Methods in Rural Women from Far Western Nepal
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Shilu Aryal, Derek C. Johnson, Thomas R. Broker, Madhav P. Bhatta, Eric Chamot, Pema Lhaki, Sten H. Vermund, Sadeep Shrestha, Jennifer S. Smith, and Mirjam-Colette Kempf
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Rural Population ,Nepali ,Epidemiology ,Geographical Locations ,Medical Laboratory Personnel ,11. Sustainability ,Medicine and Health Sciences ,Prevalence ,Medicine ,Papillomaviridae ,Young adult ,Cervical cancer ,Multidisciplinary ,biology ,medicine.diagnostic_test ,Obstetrics ,Health services research ,Middle Aged ,3. Good health ,language ,Female ,Sample collection ,Research Article ,Adult ,medicine.medical_specialty ,Asia ,Adolescent ,Science ,Disease Surveillance ,Risk Assessment ,Infectious Disease Epidemiology ,Specimen Handling ,Young Adult ,Nepal ,Humans ,RNA, Messenger ,Pelvic examination ,Demography ,Vaginal Smears ,Gynecology ,Behavior ,business.industry ,Papillomavirus Infections ,biology.organism_classification ,medicine.disease ,language.human_language ,Social Epidemiology ,Infectious Disease Surveillance ,Sample Size ,People and Places ,Rural area ,business - Abstract
IntroductionNepal has one of the highest cervical cancer rates in South Asia. Only a few studies in populations from urban areas have investigated type specific distribution of human papillomavirus (HPV) in Nepali women. Data on high-risk HPV (HR-HPV) types are not currently available for rural populations in Nepal. We aimed to assess the distribution of HR- HPV among rural Nepali women while assessing self-collected and clinician-collected cervico-vaginal specimens as sample collection methods for HPV screening.MethodsStudy participants were recruited during a health camp conducted by Nepal Fertility Care Center in Achham District of rural far western Nepal. Women of reproductive age completed a socio-demographic and clinical questionnaire, and provided two specimens; one cervical-vaginal specimen using a self-collection method and another cervical specimen collected by health camp auxiliary nurse midwives during a pelvic examination. All samples were tested for 14 different HR-HPV mRNA and also specific for HPV16/18/45 mRNA.ResultsOf 261 women with both clinician- and self-collected cervical samples, 25 tested positive for HR-HPV, resulting in an overall HR-HPV prevalence of 9.6% (95% confidence Interval [CI]: 6.3-13.8). The overall Kappa value assessing agreement between clinician- and self-collected tests was 0.62 (95% CI: 0.43-0.81), indicating a "good" level of agreement. Abnormal cytology was reported for 8 women. One woman identified with squamous cell carcinoma (SCC), and 7 women with high grade squamous intraepithelial lesions (HSIL). Seven of the 8 women tested positive for HR-HPV (87.5%) in clinician-collected samples and 6 in self-collected samples (75.0%).ConclusionThis is the first study to assess HR-HPV among rural Nepali women. Self-collected sampling methods should be the subject of additional research in Nepal for screening HR-HPV, associated with pre-cancer lesions and cancer, in women in rural areas with limited access to health services.
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- 2014
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19. Role of gender in perspectives of discrimination, stigma, and attitudes relative to cervical cancer in rural Sénégal.
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Natalia Ongtengco, Hamidou Thiam, Zola Collins, Elly Lou De Jesus, Caryn E Peterson, Tianxiu Wang, Ellen Hendrix, Youssoupha Ndiaye, Babacar Gueye, Omar Gassama, Abdoul Aziz Kasse, Adama Faye, Jennifer S Smith, Marian Fitzgibbon, and Jon Andrew Dykens
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Medicine ,Science - Abstract
Cervical cancer is the leading cause of female cancer deaths in Sénégal which is ranked 17th in incidence globally, however, the screening rate there is very low. Nuanced gendered perceptions and health behaviors of both women and men play a significant role in women's health. Our study analyzed gender differences on perceptions of gender roles, discrimination, cancer attitudes, cancer stigma, and influences in healthcare decision making within our study population to inform ongoing cervical cancer prevention work in the rural region of Kédougou, Sénégal. We conducted a cross-sectional survey of 158 participants, 101 women and 57 men (ages 30-59) across nine non-probability-sampled communities from October 2018 through February 2019. Bivariate analysis was conducted to assess gender differences across all variables. We also conducted analyses to determine whether there were significant differences in beliefs and attitudes, by screening behavior and by education. We found significant gender differences regarding the perception of a woman's role (P < 0.001) and a man's role (P = 0.007) as well as in the everyday discrimination questions of "decreased respect by spouse" (P < 0.001). Regarding cancer stigma, among women, 18.00% disagreed and 10.00% strongly disagreed while among men, 3.6% disagreed and 1.8% strongly disagreed that "If I had cancer, I would want my family to know that I have it." When making decisions about one's healthcare, women are more likely than men to trust social contacts such as their spouse (46.5% vs 5.3%, p < 0.001) while men are more likely than women to trust health service personnel such as a nurse (50.9% vs 18.8%, p < 0.001). Furthermore, men and women were both more likely to state that men have the final decision regarding the healthcare decisions of women (p < 0.001). Our data reveal structural disadvantages for women within our study population as well as gender differences in the adapted everyday discrimination scale and cancer stigma scale. Higher rates of both personal and perceived cancer stigma among women has profound implications for how population and community level communication strategies for cancer prevention and control should be designed. Efforts to advance the goal of the elimination of cervical cancer should, in the short-term, seek to gain a more profound understanding of the ways that gender, language, and other social determinants impact negative social influences and other barriers addressable through interventions. Social and behavior change communication may be one approach that can focus both on education while seeking to leverage the social influences that exist in achieving immediate and long-term goals.
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- 2020
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20. Detection of HPV E6 oncoprotein from urine via a novel immunochromatographic assay.
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Cristina Mendes de Oliveira, Laura W Musselwhite, Naitielle de Paula Pantano, Fabiana Lima Vazquez, Jennifer S Smith, Johannes Schweizer, Michael Belmares, Júlio César Possati-Resende, Marcelo de Andrade Vieira, Adhemar Longatto-Filho, and José Humberto Tavares Guerreiro Fregnani
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Medicine ,Science - Abstract
Cervical cancer is a significant public health problem, especially in low- and middle-income countries, where women have little access to cervical cancer screening; consequently 80% of cervical cancer related mortality occurs in these regions. The development of screening methods that need less infrastructure thus represents an urgent medical need. The study aims to compare the detection rates of high-risk human papillomavirus 16 and 18 E6 oncoprotein in urine, vaginal self-collected, and cervical scrapes of women using the OncoE6™ Cervical Test and compare the HPV16 and/or HPV18 E6 detection rates with the HPV DNA testing. Paired urine, vaginal self-collected and cervical specimens were collected from 124 women who participated in cervical cancer screening or treatment in this proof-of-concept study and underwent to HPV16/18-E6 testing and high-risk HPV DNA testing prior to treatment of cervical neoplasia or cancer. Concordance between urinary, vaginal and cervical HPV16/18-E6 and HPV-DNA testing was evaluated for patients classified as negative group (
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- 2020
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21. Facilitators and barriers to traditional medicine use among cancer patients in Malawi.
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Jacob Hill, Ryan Seguin, Twambilile Phanga, Agness Manda, Maria Chikasema, Satish Gopal, and Jennifer S Smith
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Medicine ,Science - Abstract
BackgroundIncreasing access to conventional cancer treatment (CT) in low-income countries (LICs) is an important public health initiative to address the global burden of cancer. However, LICs have a high prevalence of use of traditional and complementary medicine (T&CM). It is important to consider the factors that influence a patient's choice to use T&CM, CT, or both for their cancer treatment.MethodsWe conducted focus groups among adult cancer patients in Lilongwe, Malawi to identify facilitators and barriers of T&CM use. Focus groups were recorded, transcribed, translated, and underwent thematic content analysis.ResultsCultural norms, T&CM access, T&CM success, and CT failure were all identified as facilitators to T&CM use. CT success and T&CM failure were identified as barriers. Access and norms appear to determine initial treatment selection, while treatment outcomes dictate continued use of T&CM or CT.ConclusionThis study identified a pragmatic and experience-based treatment selection process that aligns with the social cognitive theory of behavior and assists in comprehending the factors that influence T&CM use among cancer patients in a low resource setting.
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- 2019
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22. Costs and cost-effectiveness of LEEP versus cryotherapy for treating cervical dysplasia among HIV-positive women in Johannesburg, South Africa.
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Naomi Lince-Deroche, Craig van Rensburg, Jaqueline Roseleur, Busola Sanusi, Jane Phiri, Pam Michelow, Jennifer S Smith, and Cindy Firnhaber
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Medicine ,Science - Abstract
BACKGROUND:Cervical cancer incidence is significant in countries, such as South Africa, with high burdens of both HIV and human papillomavirus (HPV). Cervical cancer is largely preventable if dysplasia is diagnosed and treated early, but there is debate regarding the best approaches for screening and treatment, especially for low-resource settings. Currently South Africa provides Pap smears followed by colposcopic biopsy and LEEP if needed in its public health facilities. We estimated the costs and cost-effectiveness of two approaches for treating cervical intraepithelial neoplasia grade 2 or higher (CIN2+) among HIV-infected women, most of whom were taking antiretroviral treatment, at a public HIV treatment facility in Johannesburg, South Africa. METHODS:Method effectiveness was derived from an intention-to-treat analysis of data gathered in a clinical trial completed previously at the study facility. In the trial, women who were diagnosed with CIN2+ and eligible for cryotherapy were randomized to cryotherapy or LEEP. If women were CIN2+ at six months as determined via Pap smear and colposcopic biopsy, all women-regardless of their original treatment assignment-received LEEP. "Cure" was then defined as the absence of disease at 12 months based on Pap smear and colposcopic biopsy. Health service costs were estimated using micro-costing between June 2013 and April 2014. Capital costs were annualized using a discount rate of 3%. Two different service volume scenarios were considered, and results from an as-treated analysis were considered in sensitivity analysis. RESULTS:In total, 166 women with CIN2+ were enrolled (86 had LEEP; 80 had cryotherapy). At 12 months, cumulative loss to follow-up was 12.8% (11/86) for the LEEP group and 13.8% (11/80) for cryotherapy. Based on the unadjusted intention-to-treat analysis conducted for this economic evaluation, there was no significant difference in efficacy. At 12 months, 83.8% (95% CI 73.8-91.1) of women with CIN2+ at baseline and randomized to cryotherapy were free of CIN2+ disease. In contrast, 76.7% (95% CI 66.4-85.2) of women assigned to LEEP were free from disease. On average, women initially treated with cryotherapy were less costly per patient randomized at US$ 118.00 (113.91-122.10), and per case "cured" at US$ 140.90 (136.01-145.79). Women in the LEEP group cost US$ 162.56 (157.90-167.22) per patient randomized and US$ 205.59 (199.70-211.49) per case cured. In the as-treated analysis, which was based on trial data, LEEP was more efficacious than cryotherapy; however, the difference was not significant. Cryotherapy remained more cost-effective than LEEP in all sensitivity and scenario analyses. CONCLUSIONS:For this cost-effectiveness analysis, using an intention-to-treat approach and taking into consideration uncertainty in the clinical and cost outcomes, a strategy involving cryotherapy plus LEEP if needed at six months was dominant to LEEP plus LEEP again at six months if needed for retreatment. However, compared to other studies comparing LEEP and cryotherapy, the efficacy results were low in both treatment groups-possibly due to the HIV-positivity of the participants. Further research is needed, but at present choosing the "right" treatment option may be less important than ensuring access to treatment and providing careful monitoring of treatment outcomes.
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- 2018
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23. Prospective One Year Follow Up of HIV Infected Women Screened for Cervical Cancer Using Visual Inspection with Acetic Acid, Cytology and Human Papillomavirus Testing in Johannesburg South Africa.
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Cynthia Firnhaber, Bridgette Goeieman, Mark Faesen, Simon Levin, Sophie Williams, Sibongile Rameotshela, Avril Swarts, Pam Michelow, Tanvier Omar, Anna-Lise Williamson, Bruce Allan, Kate Schnippel, and Jennifer S Smith
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Medicine ,Science - Abstract
BACKGROUND:Cervical cancer is the most common cancer in Sub-Saharan Africa. There are little of HIV-infected women one-year after screening using visual inspection with acetic acid (VIA), HPV or cytology in sub-Saharan Africa. METHODS:HIV-infected women in Johannesburg South Africa were screened one year later by Pap smear, VIA and human papillomavirus (HPV) testing. Women qualified for the 12 month follow-up visit if they had a negative or cervical intra-epithelial neoplasia (CIN) 1 results at the baseline visit. Modified Poisson regression was used to analyse associations between patient baseline characteristics and progression. RESULTS:A total of 688 of 1,202 enrolled at baseline study who were CIN-2+ negative and qualified for a 12 month follow-up visit. Progression to CIN-2+ was higher in women with positive VIA results (12.6%; 24/191) than those VIA-negative (4.4%; 19/432). HPV-positive women at baseline were more likely to progress to CIN-2+ (12.3%; 36/293) than those HPV-negative (2.1%; 7/329). Cytology-positive women at baseline were more likely to progress to CIN-2+ (9.6%; 37/384) than cytology-negative women (2.5%; 6/237). Approximately 10% (10.4%; 39/376) of women with CIN 1 at baseline progressed to CIN 2+. Women who were VIA or HPV positive at baseline were more likely to progress aIRR 1.85, CI 95% (1.46 to 2.36), aIRR 1.41 CI 95% (1.14 to 1.75) respectively. CONCLUSION:Progression to CIN-2+ in HIV-infected women is significant when measured by baseline positive VIA, HPV or Pap and yearly screening by any method should be considered in this population if possible.
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- 2016
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24. Developing the Evidence Base to Inform Best Practice: A Scoping Study of Breast and Cervical Cancer Reviews in Low- and Middle-Income Countries.
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Margaret M Demment, Karen Peters, J Andrew Dykens, Ann Dozier, Haq Nawaz, Scott McIntosh, Jennifer S Smith, Angela Sy, Tracy Irwin, Thomas T Fogg, Mahmooda Khaliq, Rachel Blumenfeld, Mehran Massoudi, and Timothy De Ver Dye
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Medicine ,Science - Abstract
BackgroundBreast and cervical cancers have emerged as major global health challenges and disproportionately lead to excess morbidity and mortality in low- and middle-income countries (LMICs) when compared to high-income countries. The objective of this paper was to highlight key findings, recommendations, and gaps in research and practice identified through a scoping study of recent reviews in breast and cervical cancer in LMICs.MethodsWe conducted a scoping study based on the six-stage framework of Arskey and O'Malley. We searched PubMed, Cochrane Reviews, and CINAHL with the following inclusion criteria: 1) published between 2005-February 2015, 2) focused on breast or cervical cancer 3) focused on LMIC, 4) review article, and 5) published in English.ResultsThrough our systematic search, 63 out of the 94 identified cervical cancer reviews met our selection criteria and 36 of the 54 in breast cancer. Cervical cancer reviews were more likely to focus upon prevention and screening, while breast cancer reviews were more likely to focus upon treatment and survivorship. Few of the breast cancer reviews referenced research and data from LMICs themselves; cervical cancer reviews were more likely to do so. Most reviews did not include elements of the PRISMA checklist.ConclusionOverall, a limited evidence base supports breast and cervical cancer control in LMICs. Further breast and cervical cancer prevention and control studies are necessary in LMICs.
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- 2015
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25. Costs and Cost Effectiveness of Three Approaches for Cervical Cancer Screening among HIV-Positive Women in Johannesburg, South Africa.
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Naomi Lince-Deroche, Jane Phiri, Pam Michelow, Jennifer S Smith, and Cindy Firnhaber
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Medicine ,Science - Abstract
South Africa has high rates of HIV and HPV and high incidence and mortality from cervical cancer. However, cervical cancer is largely preventable when early screening and treatment are available. We estimate the costs and cost-effectiveness of conventional cytology (Pap), visual inspection with acetic acid (VIA) and HPV DNA testing for detecting cases of CIN2+ among HIV-infected women currently taking antiretroviral treatment at a public HIV clinic in Johannesburg, South Africa.Method effectiveness was derived from a validation study completed at the clinic. Costs were estimated from the provider perspective using micro-costing between June 2013-April 2014. Capital costs were annualized using a discount rate of 3%. Two different service volume scenarios were considered. Threshold analysis was used to explore the potential for reducing the cost of HPV DNA testing.VIA was least costly in both scenarios. In the higher volume scenario, the average cost per procedure was US$ 3.67 for VIA, US$ 8.17 for Pap and US$ 54.34 for HPV DNA. Colposcopic biopsies cost on average US$ 67.71 per procedure. VIA was least sensitive but most cost-effective at US$ 17.05 per true CIN2+ case detected. The cost per case detected for Pap testing was US$ 130.63 using a conventional definition for positive results and US$ 187.52 using a more conservative definition. HPV DNA testing was US$ 320.09 per case detected. Colposcopic biopsy costs largely drove the total and per case costs. A 71% reduction in HPV DNA screening costs would make it competitive with the conservative Pap definition.Women need access to services which meet their needs and address the burden of cervical dysplasia and cancer in this region. Although most cost-effective, VIA may require more frequent screening due to low sensitivity, an important consideration for an HIV-positive population with increased risk for disease progression.
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- 2015
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26. Cross-Sectional Associations between Body Size, Circulating Sex-Steroid Hormones and IGF Components among Healthy Chinese Women.
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Lauren E McCullough, Erline E Miller, Qiong Wang, Jia-Yuan Li, Li Liu, Hui Li, Jing Zhang, and Jennifer S Smith
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Medicine ,Science - Abstract
The incidence of breast cancer has increased in Asian countries and rates of hormone receptor (HR) negative breast cancer exceed those of Western countries. Epidemiologic data suggest that the association between body size and BC risk may vary by HR status, and could differ geographically. While body size may influence BC risk by moderating the synthesis and metabolism of circulating sex-steroid hormones, insulin-like growth factor (IGF)-1 and related binding proteins, there is a dearth of literature among Asian women. We aimed to examine these specific associations in a sample of Chinese women. In Sichuan Province 143 women aged ≥40 years were recruited through outpatient services (2011-2012). Questionnaires, anthropometric measurements, and blood samples were utilized for data collection and linear regression was applied in data analyses. Among women
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- 2015
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27. Assessment of high-risk human papillomavirus infections using clinician- and self-collected cervical sampling methods in rural women from far western Nepal.
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Derek C Johnson, Madhav P Bhatta, Jennifer S Smith, Mirjam-Colette Kempf, Thomas R Broker, Sten H Vermund, Eric Chamot, Shilu Aryal, Pema Lhaki, and Sadeep Shrestha
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Medicine ,Science - Abstract
IntroductionNepal has one of the highest cervical cancer rates in South Asia. Only a few studies in populations from urban areas have investigated type specific distribution of human papillomavirus (HPV) in Nepali women. Data on high-risk HPV (HR-HPV) types are not currently available for rural populations in Nepal. We aimed to assess the distribution of HR- HPV among rural Nepali women while assessing self-collected and clinician-collected cervico-vaginal specimens as sample collection methods for HPV screening.MethodsStudy participants were recruited during a health camp conducted by Nepal Fertility Care Center in Achham District of rural far western Nepal. Women of reproductive age completed a socio-demographic and clinical questionnaire, and provided two specimens; one cervical-vaginal specimen using a self-collection method and another cervical specimen collected by health camp auxiliary nurse midwives during a pelvic examination. All samples were tested for 14 different HR-HPV mRNA and also specific for HPV16/18/45 mRNA.ResultsOf 261 women with both clinician- and self-collected cervical samples, 25 tested positive for HR-HPV, resulting in an overall HR-HPV prevalence of 9.6% (95% confidence Interval [CI]: 6.3-13.8). The overall Kappa value assessing agreement between clinician- and self-collected tests was 0.62 (95% CI: 0.43-0.81), indicating a "good" level of agreement. Abnormal cytology was reported for 8 women. One woman identified with squamous cell carcinoma (SCC), and 7 women with high grade squamous intraepithelial lesions (HSIL). Seven of the 8 women tested positive for HR-HPV (87.5%) in clinician-collected samples and 6 in self-collected samples (75.0%).ConclusionThis is the first study to assess HR-HPV among rural Nepali women. Self-collected sampling methods should be the subject of additional research in Nepal for screening HR-HPV, associated with pre-cancer lesions and cancer, in women in rural areas with limited access to health services.
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- 2014
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28. Genetic and dietary determinants of insulin-like growth factor (IGF)-1 and IGF binding protein (BP)-3 levels among Chinese women.
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Qiong Wang, Li Liu, Hui Li, Lauren E McCullough, Ya-na Qi, Jia-yuan Li, Jing Zhang, Erline Miller, Chun-xia Yang, and Jennifer S Smith
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Medicine ,Science - Abstract
BACKGROUND: Higher insulin-like growth factor (IGF)-1 and lower IGF binding protein (BP)-3 levels have been associated with higher commoncancer risk, including breast cancer. Dietary factors, genetic polymorphisms, and the combination of both may influence circulating IGF-1 and IGFBP-3 serum concentrations. METHODS: From September 2011 to July 2012, we collected demographic, reproductive and dietary data on 143 women (≥ 40 years). We genotyped IGF-1 rs1520220 and IGFBP-3 rs2854744 and measured circulating IGF-1 and IGFBP-3 levels in serum. Covariance analyses were used to estimate the associations of serum levels of IGF-1 and IGFBP-3, and the molar ratio of IGF-1 to IGFBP-3 with IGF-1 rs1520220 and IGFBP-3 rs2854744 genotypes. We subsequently assessed the combined influence of genetics and diet (daily intake of protein, fat and soy isoflavones) on IGF-1 and IGFBP-3 levels. RESULTS: Among women aged less than 50 years, circulating IGF-1 serum levels were significantly lower for those with CC genotype for IGF-1 rs1520220 than levels for those with the GC or GG genotypes (in recessive model: P = 0.007).In gene-diet analyses among these women, we found carrying CC genotype for IGF-1 rs1520220 and high soy isoflavone intake tend to be associated with lower circulating IGF-1 levels synthetically (P = 0.002). Women with GG or GC genotypes for IGF-1 rs1520220 and with low intake of soy isoflavones had the highest levels of circulating IGF-1 (geometric mean [95% CI]: 195 [37, 1021] µg/L). Comparatively, women with both the CC genotype and high soy intake had the lowest levels of circulating IGF-1 (geometric mean [95% CI]: 120 [38,378] µg/L). CONCLUSIONS: IGF-1 serum levels are significantly lower among women with the CC genotype for IGF-1-rs1520220. High soy isoflavone intake may interact with carrying CC genotype for IGF-1-rs1520220 to lower women's serum IGF-1 levels more.
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- 2014
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29. Associations between methylation of paternally expressed gene 3 (PEG3), cervical intraepithelial neoplasia and invasive cervical cancer.
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Monica D Nye, Cathrine Hoyo, Zhiqing Huang, Adriana C Vidal, Frances Wang, Francine Overcash, Jennifer S Smith, Brandi Vasquez, Brenda Hernandez, Britta Swai, Olola Oneko, Pendo Mlay, Joseph Obure, Marilie D Gammon, John A Bartlett, and Susan K Murphy
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Medicine ,Science - Abstract
Cytology-based screening for invasive cervical cancer (ICC) lacks sensitivity and specificity to discriminate between cervical intraepithelial neoplasia (CIN) likely to persist or progress from cases likely to resolve. Genome-wide approaches have been used to identify DNA methylation marks associated with CIN persistence or progression. However, associations between DNA methylation marks and CIN or ICC remain weak and inconsistent. Between 2008-2009, we conducted a hospital-based, case-control study among 213 Tanzania women with CIN 1/2/3 or ICC. We collected questionnaire data, biopsies, peripheral blood, cervical scrapes, Human papillomavirus (HPV) and HIV-1 infection status. We assessed PEG3 methylation status by bisulfite pyrosequencing. Multinomial logistic regression was used to estimate odds ratios (OR) and confidence intervals (CI 95%) for associations between PEG3 methylation status and CIN or ICC. After adjusting for age, gravidity, hormonal contraceptive use and HPV infection, a 5% increase in PEG3 DNA methylation was associated with increased risk for ICC (OR = 1.6; 95% CI 1.2-2.1). HPV infection was associated with a higher risk of CIN1-3 (OR = 15.7; 95% CI 5.7-48.6) and ICC (OR = 29.5, 95% CI 6.3-38.4). Infection with high risk HPV was correlated with mean PEG3 differentially methylated regions (DMRs) methylation (r = 0.34 p
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- 2013
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30. Validation of cervical cancer screening methods in HIV positive women from Johannesburg South Africa.
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Cynthia Firnhaber, Nomtha Mayisela, Lu Mao, Sophie Williams, Avril Swarts, Mark Faesen, Simon Levin, Pam Michelow, Tanvier Omar, Michael G Hudgens, Anna-Lise Williamson, Bruce Allan, David A Lewis, and Jennifer S Smith
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Medicine ,Science - Abstract
HIV-infected women are at increased risk for developing cervical cancer. Women living in resource-limited countries are especially at risk due to poor access to cervical cancer screening and treatment. We evaluated three cervical cancer screening methods to detect cervical intraepithelial neoplasia grade 2 and above (CIN 2+) in HIV-infected women in South Africa; Pap smear, visual inspection with 5% acetic acid (VIA) and human papillomavirus detection (HPV).HIV-infected women aged 18-65 were recruited in Johannesburg. A cross-sectional study evaluating three screening methods for the detection of the histologically-defined gold standard CIN-2 + was performed. Women were screened for cervical abnormalities with the Digene HC2 assay (HPV), Pap smear and VIA. VIA was performed by clinic nurses, digital photographs taken and then later reviewed by specialist physicians. The sensitivity, specificity and predictive valves for CIN-2 + were calculated using maximum likelihood estimators.1,202 HIV-infected women participated, with a median age of 38 years and CD4 counts of 394 cells/mm(3). One third of women had a high grade lesion on cytology. VIA and HPV were positive in 45% and 61% of women respectively. Estimated sensitivity/specificity for HPV, Pap smear and VIA for CIN 2+ was 92%/51.4%, 75.8%/83.4% and 65.4/68.5% (nurse reading), respectively. Sensitivities were similar, and specificities appeared significantly lower for the HPV test, cytology and VIA among women with CD4 counts ≤200 cells/mm(3) as compared to CD4 counts >350 cells/mm(3).Although HPV was the most sensitive screening method for detecting CIN 2+, it was less specific than conventional cytology and VIA with digital imaging review. Screening programs may need to be individualized in context of the resources and capacity in each area.
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- 2013
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31. HPV genotypes in high grade cervical lesions and invasive cervical carcinoma as detected by two commercial DNA assays, North Carolina, 2001-2006.
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Susan Hariri, Martin Steinau, Allen Rinas, Julia W Gargano, Christina Ludema, Elizabeth R Unger, Alicia L Carter, Kathy L Grant, Melanie Bamberg, James E McDermott, Lauri E Markowitz, Noel T Brewer, and Jennifer S Smith
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Medicine ,Science - Abstract
HPV typing using formalin fixed paraffin embedded (FFPE) cervical tissue is used to evaluate HPV vaccine impact, but DNA yield and quality in FFPE specimens can negatively affect test results. This study aimed to evaluate 2 commercial assays for HPV detection and typing using FFPE cervical specimens.Four large North Carolina pathology laboratories provided FFPE specimens from 299 women ages18 and older diagnosed with cervical disease from 2001 to 2006. For each woman, one diagnostic block was selected and unstained serial sections were prepared for DNA typing. Extracts from samples with residual lesion were used to detect and type HPV using parallel and serial testing algorithms with the Linear Array and LiPA HPV genotyping assays.LA and LiPA concordance was 0.61 for detecting any high-risk (HR) and 0.20 for detecting any low-risk (LR) types, with significant differences in marginal proportions for HPV16, 51, 52, and any HR types. Discordant results were most often LiPA-positive, LA-negative. The parallel algorithm yielded the highest prevalence of any HPV type (95.7%). HR type prevalence was similar using parallel (93.1%) and serial (92.1%) approaches. HPV16, 33, and 52 prevalence was slightly lower using the serial algorithm, but the median number of HR types per woman (1) did not differ by algorithm. Using the serial algorithm, HPV DNA was detected in >85% of invasive and >95% of pre-invasive lesions. The most common type was HPV16, followed by 52, 18, 31, 33, and 35; HPV16/18 was detected in 56.5% of specimens. Multiple HPV types were more common in lower grade lesions.We developed an efficient algorithm for testing and reporting results of two commercial assays for HPV detection and typing in FFPE specimens, and describe HPV type distribution in pre-invasive and invasive cervical lesions in a state-based sample prior to HPV vaccine introduction.
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- 2012
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32. Knowledge and acceptability of pap smears, self-sampling and HPV vaccination among adult women in Kenya.
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Anne F Rositch, Ann Gatuguta, Robert Y Choi, Brandon L Guthrie, Romel D Mackelprang, Rose Bosire, Lucy Manyara, James N Kiarie, Jennifer S Smith, and Carey Farquhar
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Medicine ,Science - Abstract
Our study aimed to assess adult women's knowledge of human papillomavirus (HPV) and cervical cancer, and characterize their attitudes towards potential screening and prevention strategies.Women were participants of an HIV-discordant couples cohort in Nairobi, Kenya. An interviewer-administered questionnaire was used to obtain information on sociodemographic status, and sexual and medical history at baseline and on knowledge and attitudes towards Pap smears, self-sampling, and HPV vaccination at study exit.Only 14% of the 409 women (67% HIV-positive; median age 29 years) had ever had a Pap smear prior to study enrollment and very few women had ever heard of HPV (18%). Although most women knew that Pap smears detect cervical cancer (69%), very few knew that routine Pap screening is the main way to prevent ICC (18%). Most women reported a high level of cultural acceptability for Pap smear screening and a low level of physical discomfort during Pap smear collection. In addition, over 80% of women reported that they would feel comfortable using a self-sampling device (82%) and would prefer at-home sample collection (84%). Nearly all women (94%) reported willingness to be vaccinated to prevent cervical cancer if offered at no or low cost.These findings highlight the need to educate women on routine use of Pap smears in the prevention of cervical cancer and demonstrate that vaccination and self-sampling would be acceptable modalities for cervical cancer prevention and screening.
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- 2012
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33. Potential impact of antiretroviral therapy and screening on cervical cancer mortality in HIV-positive women in sub-Saharan Africa: a simulation.
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Julius Atashili, Jennifer S Smith, Adaora A Adimora, Joseph Eron, William C Miller, and Evan Myers
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Medicine ,Science - Abstract
Despite having high cervical cancer incidence and mortality rates, screening for cervical precancerous lesions remains infrequent in sub-Saharan Africa. The need to screen HIV-positive women because of the higher prevalence and faster progression of cervical precancerous lesions may be heightened by the increased access to highly-active antiretroviral therapy (HAART). Policymakers need quantitative data on the effect of HAART and screening to better allocate limited resources. Our aim was to quantify the potential effect of these interventions on cervical cancer mortality.We constructed a Markov state-transition model of a cohort of HIV-positive women in Cameroon. Published data on the prevalence, progression and regression of lesions as well as mortality rates from HIV, cervical cancer and other causes were incorporated into the model. We examined the potential impact, on cumulative cervical cancer mortality, of four possible scenarios: no HAART and no screening (NHNS), HAART and no screening (HNS), HAART and screening once on HAART initiation (HSHI), and HAART and screening once at age 35 (HS35). Our model projected that, compared to NHNS, lifetime cumulative cervical cancer mortality approximately doubled with HNS. It will require 262 women being screened at HAART initiation to prevent one cervical cancer death amongst women on HAART. The magnitudes of these effects were most sensitive to the rate of progression of precancerous lesions.Screening, even when done once, has the potential of reducing cervical cancer mortality among HIV-positive women in Africa. The most feasible and cost-effective screening strategy needs to be determined in each setting.
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- 2011
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