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1.
BMC Infect Dis ; 21(1): 215, 2021 Feb 25.
Artículo en Inglés | MEDLINE | ID: mdl-33632140

RESUMEN

BACKGROUND: Public health is increasingly turning to non-traditional digital data to inform HIV prevention and control strategies. We demonstrate a parsimonious method using both traditional survey and internet search histories to provide new insights into HIV testing and pre-exposure prophylaxis (PrEP) information seeking that can be easily extended to other settings. METHOD: We modeled how US internet search volumes from 2019 for HIV testing and PrEP compared against expected search volumes for HIV testing and PrEP using state HIV prevalence and socioeconomic characteristics as predictors. States with search volumes outside the upper and lower bound confidence interval were labeled as either over or under performing. State performance was evaluated by (a) Centers for Disease Control and Prevention designation as a hotspot for new HIV diagnoses (b) expanding Medicaid coverage. RESULTS: Ten states over-performed in models assessing information seeking for HIV testing, while eleven states under-performed. Thirteen states over-performed in models assessing internet searches for PrEP information, while thirteen states under-performed. States that expanded Medicaid coverage were more likely to over perform in PrEP models than states that did not expand Medicaid coverage. While states that were hotspots for new HIV diagnoses were more likely to over perform on HIV testing searches. CONCLUSION: Our study derived a method of measuring HIV and PrEP information seeking that is comparable across states. Several states exhibited information seeking for PrEP and HIV testing that deviated from model assessments. Statewide search volume for PrEP information was affected by a state's decision to expand Medicaid coverage. Our research provides health officials with an innovative way to monitor statewide interest in PrEP and HIV testing using a metric for information-seeking that is comparable across states.


Asunto(s)
Infecciones por VIH/prevención & control , Prueba de VIH/estadística & datos numéricos , Conducta en la Búsqueda de Información , Internet/estadística & datos numéricos , Profilaxis Pre-Exposición/estadística & datos numéricos , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , Humanos , Medicaid/estadística & datos numéricos , Prevalencia , Estados Unidos/epidemiología
2.
Subst Use Misuse ; 56(14): 2134-2140, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34486471

RESUMEN

Background: The coronavirus disease (COVID-19) pandemic has impacted patients receiving methadone maintenance treatment (MMT) through opioid treatment programs (OTPs), especially because of the unique challenges of the care delivery model. Previously, documentation of patient experiences during emergencies often comes years after the fact, in part because there is a substantial data void in real-time. Methods: We extracted 308 posts that mention COVID-19 keywords on r/methadone, an online community for patients receiving MMT to share information, on Reddit occurring between January 31, 2020 and September 30, 2020. 215 of these posts self-report an impact to their MMT. Using qualitative content analysis, we characterized the impacts described in these posts and identified four emergent themes describing patients' experience of impacts to MMT during COVID-19. Results: The themes included (1) 54.4% of posts reporting impediments to accessing their methadone, (2) 28.4% reporting impediments to accessing physicial OTPs, (3) 19.5% reporting having to self-manage their care, and (4) 4.7% reporting impediments to accessing OTP providers and staff. Conclusions: Patients described unanticipated consequences to one-size-fits-all policies that are unevenly applied resulting in suboptimal dosing, increased perceived risk of acquiring COVID-19 at OTPs, and reduced interaction with OTP providers and staff. While preliminary, these results are formative for follow-up surveillance metrics for patients of OTPs as well as digitally-mediated resource needs for this online community. This study serves as a model of how social media can be employed during and after emergencies to hear the lived experiences of patients for informed emergency preparedness and response.


Asunto(s)
COVID-19 , Metadona , Humanos , Metadona/uso terapéutico , Tratamiento de Sustitución de Opiáceos , Evaluación del Resultado de la Atención al Paciente , SARS-CoV-2 , Autoinforme
3.
J Community Health ; 45(3): 516-525, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-31696420

RESUMEN

This study examined the sexually transmitted infections (STIs), cervical cancer, and human papillomavirus virus (HPV) vaccine-related awareness and knowledge among married Bhutanese refugee and Nepali women living in eastern Nepal. Participants were recruited from a women's health camp in Jhapa District in eastern Nepal. A demographic and health survey with questions on STIs, cervical cancer and HPV vaccine was administered to consenting participants. Women who were born in Bhutan or living in the United Nations administered refugee camps were classified as Bhutanese. Of the 630 participants, 14.3% of participants were Bhutanese and the mean age was 38.8 ± 8.2 years. A higher proportion of Bhutanese than Nepali women reported a lack of cervical cancer awareness (42.0% vs. 30.7%; p = 0.036). Only 21.5% of the participants knew HPV as the cause of cervical cancer; 13.9% were aware of an HPV vaccine; and 96% reported that they would have their children vaccinated against HPV if the vaccine was available free of cost to them. In multivariable analyses, the lack of awareness about STIs was directly associated with the lack of cervical cancer awareness [odds ratio (OR) 4.50; 95% confidence interval (CI) 2.99-6.77] and inversely associated with HPV-vaccine awareness [OR 0.53; 95% CI 0.29-0.97]. Low cervical cancer and HPV vaccine awareness and knowledge among Nepali and Bhutanese women in eastern Nepal highlight the need for increasing awareness and knowledge in the context of STIs and reproductive health education. Increasing awareness and knowledge of HPV, its role in cervical cancer, and prevention modalities is a first critical step for implementing successful targeted primary cervical cancer prevention measures focused on behavior modification and vaccine administration.


Asunto(s)
Conocimientos, Actitudes y Práctica en Salud , Vacunas contra Papillomavirus , Refugiados/estadística & datos numéricos , Neoplasias del Cuello Uterino/prevención & control , Adulto , Alphapapillomavirus , Bután , Niño , Femenino , Humanos , Matrimonio , Persona de Mediana Edad , Nepal , Infecciones por Papillomavirus/prevención & control , Salud de la Mujer
4.
BMC Infect Dis ; 17(1): 73, 2017 01 14.
Artículo en Inglés | MEDLINE | ID: mdl-28088173

RESUMEN

BACKGROUND: Cervical cancer is the leading cause of cancer morbidity and mortality among women in Nepal and Bhutan. Data on high-risk human papillomavirus (HR-HPV) infection and cervical abnormalities among Nepali and Bhutanese women are sparse. The objectives of this study were to assess and compare the prevalence of HR-HPV infection and cervical abnormalities among Nepali and Bhutanese women living in Jhapa District in eastern Nepal; and examine the risk factors for HR-HPV infection and cervical abnormalities in those women. METHODS: Study participants were recruited from a women's health camp organized by NFCC-International, a Nepal-based non-governmental organization, in 2014. Consenting participants were administered a demographic and health questionnaire and cervico-vaginal specimens collected. Both self-collected and clinician-collected cervico-vaginal specimens were tested for HR-HPV infection. Cytologic exam was performed on clinician-collected samples and cervical cytology results were categorized according to the Bethesda classification. A participant was classified as a Bhutanese if they were either born in Bhutan or currently lived in one of the United Nations administered Bhutanese refugee camps in Jhapa; otherwise, the participant was classified as a Nepali. RESULTS: Of the 647 study participants, 15.9% were Bhutanese women living in refugee camps and the overall age (± standard deviation) was 38.8 ± 8.2 years. The prevalence of HR-HPV infection was 8.9% and abnormal cervical cytology was 7.1% respectively, with no significant difference in HR-HPV positivity (p = 0.399) or abnormal cervical cytology (p = 0.698) between Nepali and Bhutanese women. Compared to women whose husbands had not migrated for employment, women whose husbands had migrated outside of the district had 3.30 times (95% Confidence Interval [CI]: 1.13-9.64) the odds of being HR-HPV positive and women whose husbands had migrated outside the country had 2.92 times (95% CI: 1.32-6.49) the odds of having abnormal cervical cytology. CONCLUSIONS: HR-HPV positivity and abnormal cervical cytology were similar among Nepali and Bhutanese women. Husbands migrating for employment within or outside the country was a significant risk factor for high-risk HPV infection and cervical cytology, indicating the important role spousal behavior may play in HR-HPV acquisition and cervical abnormalities among these women.


Asunto(s)
Carcinoma de Células Escamosas/epidemiología , Infecciones por Papillomavirus/epidemiología , Refugiados/estadística & datos numéricos , Lesiones Intraepiteliales Escamosas de Cuello Uterino/epidemiología , Neoplasias del Cuello Uterino/epidemiología , Adulto , Anciano , Bután/etnología , Carcinoma de Células Escamosas/virología , Femenino , Humanos , Persona de Mediana Edad , Nepal/epidemiología , Nepal/etnología , Prueba de Papanicolaou , Papillomaviridae , Infecciones por Papillomavirus/virología , Prevalencia , Factores de Riesgo , Manejo de Especímenes/métodos , Lesiones Intraepiteliales Escamosas de Cuello Uterino/virología , Neoplasias del Cuello Uterino/virología , Frotis Vaginal , Salud de la Mujer , Adulto Joven
5.
Health Sci Rep ; 6(2): e1119, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36819986

RESUMEN

Background and Aims: In Myanmar, public sector treatment programs for hepatitis C virus (HCV) infection were nonexistent until June 2017. WHO highlights the importance of simplification of HCV service delivery through task-shifting among health workers and decentralization to the primary health care level. Between November 2016 and November 2017, a study was conducted to describe the epidemiological data and real-world outcomes of treating HIV/HCV coinfected patients with generic direct acting antiviral (DAA) based regimens in the three HIV clinics run by nonspecialist medical doctors in Myanmar. Methods: HCV co-infection among people living with HIV (PLHIV) from two clinics in Yangon city and one clinic in Dawei city was screened by rapid diagnostic tests and confirmed by testing for viral RNA. Nonspecialist medical doctors prescribed sofosbuvir and daclatasvir based regimens (with or without ribavirin) for 12 or 24 weeks based on the HCV genotype and liver fibrosis status. Sustained virologic response at 12 weeks after treatment (SVR12) was assessed to determine cure. Results: About 6.5% (1417/21,777) of PLHIV were co-infected with HCV. Of 864 patients enrolled in the study, 50.8% reported history of substance use, 27% history of invasive medical procedures and 25.6% history of incarceration. Data on treatment outcomes were collected from 267 patients of which 257 (96.3%) achieved SVR12, 7 (2.6%) failed treatment, 2 (0.7%) died and 1 (0.4%) became loss to follow-up. Conclusion: The study results support the integration of hepatitis C diagnosis and treatment with DAA-based regimens into existing HIV clinics run by nonspecialist medical doctors in a resource-limited setting. Epidemiological data on HIV/HCV co-infection call for comprehensive HCV care services among key populations like drug users and prisoners in Yangon and Dawei.

6.
J Am Chem Soc ; 133(5): 1383-90, 2011 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-21033686

RESUMEN

Stoichiometric copper(I) selenide nanoparticles have been synthesized using the hot injection method. The effects of air exposure on the surface composition, crystal structure, and electronic properties were monitored using X-ray photoelectron spectroscopy, X-ray diffraction, and conductivity measurements. The current-voltage response changes from semiconducting to ohmic, and within a week a 3000-fold increase in conductivity is observed under ambient conditions. The enhanced electronic properties can be explained by the oxidation of Cu(+) and Se(2-) on the nanoparticle surface, ultimately leading to a solid-state conversion of the core from monoclinic Cu(2)Se to cubic Cu(1.8)Se. This behavior is a result of the facile solid-state ionic conductivity of cationic Cu within the crystal and the high susceptibility of the nanoparticle surface to oxidation. This regulated transformation is appealing as one could envision using layers of Cu(2)Se nanoparticles as both semiconducting and conducting domains in optoelectronic devices simply by tuning the electronic properties for each layer through controlled oxidation.

7.
BMJ Glob Health ; 6(2)2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33627360

RESUMEN

INTRODUCTION: Over half of those hepatitis C virus (HCV)/HIV coinfected live in low-income and middle-income countries, and many remain undiagnosed or untreated. In 2016, Médecins Sans Frontières (MSF) established a direct-acting antiviral (DAA) treatment programme for people HCV/HIV coinfected in Myanmar. The purpose of our study was to evaluate the real-world cost and cost-effectiveness of this programme, and potential cost-effectiveness if implemented by the Ministry of Health (MoH). METHODS: Costs (patient-level microcosting) and treatment outcomes were collected from the MSF prospective cohort study in Dawei, Myanmar. A Markov model was used to assess cost-effectiveness of the programme compared with no HCV treatment from a health provider perspective. Estimated lifetime and healthcare costs (in 2017 US$) and health outcomes (in disability-adjusted life-years (DALYs)) were simulated to calculate the incremental cost-effectiveness ratio (ICER), compared with a willingness-to-pay threshold of per capita Gross Domestic Product in Myanmar ($1250). We evaluated cost-effectiveness with updated quality-assured generic DAA prices and potential cost-effectiveness of a proposed simplified treatment protocol with updated DAA prices if implemented by the MoH. RESULTS: From November 2016 to October 2017, 122 with HIV/HCV-coinfected patients were treated with DAAs (46% with cirrhosis), 96% (n=117) achieved sustained virological response. Mean treatment costs were $1229 (without cirrhosis) and $1971 (with cirrhosis), with DAA drugs being the largest contributor to cost. Compared with no treatment, the program was cost-effective (ICER $634/DALY averted); more so with updated prices for quality-assured generic DAAs (ICER $488/DALY averted). A simplified treatment protocol delivered by the MoH could be cost-effective if associated with similar outcomes (ICER $316/DALY averted). CONCLUSIONS: Using MSF programme data, the DAA treatment programme for HCV among HIV-coinfected individuals is cost-effective in Myanmar, and even more so with updated DAA prices. A simplified treatment protocol could enhance cost-effectiveness if further rollout demonstrates it is not associated with worse treatment outcomes.


Asunto(s)
Infecciones por VIH , Hepatitis C Crónica , Hepatitis C , Antivirales/uso terapéutico , Análisis Costo-Beneficio , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/epidemiología , Hepacivirus , Hepatitis C/complicaciones , Hepatitis C/tratamiento farmacológico , Hepatitis C/epidemiología , Hepatitis C Crónica/tratamiento farmacológico , Humanos , Mianmar/epidemiología , Estudios Prospectivos
8.
Nanotechnology ; 21(16): 165604, 2010 Apr 23.
Artículo en Inglés | MEDLINE | ID: mdl-20351405

RESUMEN

Chemical vapor deposition (CVD) with vapor-liquid-solid (VLS) growth is employed to synthesize individual Ge(2)Sb(2)Te(5) nanowires with the ultimate goal of synthesizing a large scale nanowire array for universal memory storage. A consistent challenge encountered during the synthesis is a lack of control over the composition and morphology across the growth substrate. To better understand the challenges associated with the CVD synthesis of the ternary chalcogenide, computational fluid dynamics simulations are performed to quantify 3D thermal and momentum transients in the growth conditions. While these gradients are qualitatively known to exist, they have not been adequately quantified in both the axial and radial directions when under pressure and flow conditions indicative of VLS growth. These data are not easily acquired by conventional means for the axial direction under vacuum and are a considerable challenge to accurately measure radially. The simulation data shown here provide 3D insights into the gradients which ultimately dictate the region of controllable stoichiometry and morphology. These results help explain the observed inhomogeneity of the characterized ternary chalcogenide growth products at various growth substrate locations.


Asunto(s)
Calcógenos/química , Cristalización/métodos , Nanoestructuras/química , Nanoestructuras/ultraestructura , Nanotecnología/métodos , Cristalización/instrumentación , Sustancias Macromoleculares/química , Ensayo de Materiales , Conformación Molecular , Nanotecnología/instrumentación , Tamaño de la Partícula , Transición de Fase , Propiedades de Superficie
9.
PLoS One ; 14(5): e0216925, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31086387

RESUMEN

INTRODUCTION: Lahe Township belongs to Myanmar`s Naga Self-administered Zone, which is one of the most remote and mountainous areas in Myanmar. However, the limited health data available for the region suggests that there could be neglected health needs that require attention. The purpose of this study was to assess the health status of the population of Lahe Township. METHODS: A cross-sectional study design incorporating a two-stage cluster sampling methodology recommended by the WHO was used to conduct a household level survey. In the first stage, 30 village clusters were selected from all villages situated in the Lahe Township through systematic sampling with probability of selection proportional to the population size of each village based on the 2014 Myanmar census. In the second stage, a GPS-based sampling method was used to select 30 households within a village cluster. The head of the household completed the survey for all members of the household. Questionnaires inquired about maternal health, mortality, morbidities, childhood nutritional status, access to health care, and water & sanitation. The resulting data was stratified by urban/rural status. RESULTS: Data was collected on 5,929 individuals living in 879 households, of which 993 individuals (16.7%) were children 5 years old or younger. The median age was 18.0 (IQR 8.0-35.0). Children 15 years old or younger represented 44.7% of the population. 19.8% of households reported at least 1 household member sick during the previous 30 days. The crude mortality rate per 10,000 people per day was 0.58 (95% CI: 0.48-0.69). The under 5 mortality per 10,000 people per day was 0.74 (95% CI: 0.50-1.06). Only 46.7% of households could access a hospital if there was a need. CONCLUSION: Our results demonstrate a high rate of mortality and the inability to access healthcare in Lahe Township, which should be addressed to prevent further deterioration of health.


Asunto(s)
Accesibilidad a los Servicios de Salud , Salud Rural , Adolescente , Adulto , Niño , Preescolar , Estudios Transversales , Composición Familiar , Femenino , Estado de Salud , Humanos , Masculino , Mianmar , Estado Nutricional , Servicios de Salud Rural , Población Rural , Adulto Joven
10.
Geospat Health ; 12(1): 513, 2017 05 30.
Artículo en Inglés | MEDLINE | ID: mdl-28555484

RESUMEN

Nepal has a diverse geographic landscape that could potentially create clustered subpopulations with regional socio-cultures that could result in differential health outcomes. With an alarming rise in married male populations migrating for work, it is possible that these migrants are engaged in risky sexual behaviour, putting their wives at risk for infectious disease outcomes, including reproductive tract infections (RTI), when they return home. The prevalence of male migration varies by geographic region in Nepal and this variation could potentially contribute to different RTI rates. Using a cross-sectional dataset (the 2011 Nepal Demographic and Health Survey) including 9607 married women, we investigated geospatial and socio-cultural factors associated with the symptoms of RTIs with a focus on the husbands' migration status. Choropleth maps were created to illustrate areas with high percentages of RTIs that correlated with migration patterns. Overall, 31.9% of the husbands were migrating for work. After adjusting for wealth, contraception use, age at first marriage, urban/rural status and husband's education, women whose husbands had been absent for a year or more in Nepal's Mid-West region (OR 1.93 95%, CI 1.02-3.67) or Far-West region (OR 2.89 95%, CI 1.24-6.73) were more likely to report RTI-like symptoms than others. Our results suggest a potential association between husbands' migration status and Nepali women reporting RTI symptoms by geographic regions. However, further research is needed to put this outcome on a stronger footing with respect to this under-studied population, specifically in the context of geographical variation.


Asunto(s)
Infecciones del Sistema Genital/epidemiología , Migrantes , Anticoncepción , Estudios Transversales , Femenino , Humanos , Masculino , Matrimonio , Nepal , Factores Socioeconómicos , Esposos/psicología , Esposos/estadística & datos numéricos , Migrantes/psicología , Migrantes/estadística & datos numéricos
11.
Water Res ; 40(2): 311-22, 2006 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-16386777

RESUMEN

Experiments have yielded a number of important insights into the energy distribution, sparging and oxidation of methyl tert-butyl ether (MTBE), benzene, ethylbenzene, toluene, m- and p-xylene, and o-xylene (BTEX) in a dense medium plasma reactor (DMPR). It has been found that the DMPR transferred a relatively small amount of electrical energy, approximately 4% in the form of sensible heat, to the surrounding bulk liquid. Rate constants associated with plasma initiated oxidation, interphase mass transfer and photolysis were determined using a combination of non-linear least squares analysis and Matlab optimization for each species. The rate constants developed for the DMPR, in conjunction with a species mass balance on a prototype tubular high-density plasma reactor, have been applied to determine the removal rates of MTBE and the BTEXs when operating in batch and continuous flow configurations. The dependence of contaminant concentration on parameters such as treatment time, the number of pin electrodes, electrode gap, and volumetric flow rate has been determined. It was found that, under various design specifications and operating conditions, the tubular high-density plasma reactor may be an effective tool for the removal of volatile organic compounds from aqueous solutions.


Asunto(s)
Carcinógenos/aislamiento & purificación , Hidrocarburos/aislamiento & purificación , Éteres Metílicos/aislamiento & purificación , Eliminación de Residuos Líquidos/instrumentación , Electroquímica , Electrodos , Diseño de Equipo , Temperatura , Eliminación de Residuos Líquidos/métodos
12.
Plasma Med ; 6(2): 135-177, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-28428835

RESUMEN

Plasma pharmacy is a subset of the broader field of plasma medicine. Although not strictly defined, the term aqueous plasma pharmacy (APP) is used to refer to the generation and distribution of reactive plasma-generated species in an aqueous solution followed by subsequent administration for therapeutic benefits. APP attempts to harness the therapeutic effects of plasma-generated oxidant species within aqueous solution in various applications, such as disinfectant solutions, cell proliferation related to wound healing, and cancer treatment. The subsequent use of plasma-generated solutions in the APP approach facilitates the delivery of reactive plasma species to internal locations within the body. Although significant efforts in the field of plasma medicine have concentrated on employing direct plasma plume exposure to cells or tissues, here we focus specifically on plasma discharge in aqueous solution to render the solution biologically active for subsequent application. Methods of plasma discharge in solution are reviewed, along with aqueous plasma chemistry and the applications for APP. The future of the field also is discussed regarding necessary research efforts that will enable commercialization for clinical deployment.

13.
Int Health ; 8(4): 261-8, 2016 07.
Artículo en Inglés | MEDLINE | ID: mdl-27048288

RESUMEN

BACKGROUND: In April 2014 we investigated the association of migration of a woman's husband with her high-risk human papillomavirus (HR-HPV) infection status and her abnormal cervical cytology status in the Achham district of rural Far-Western Nepal. METHODS: Women were surveyed and screened for HR-HPV during a health camp conducted by the Nepal Fertility Care Center. Univariate and multivariable statistical tests were performed to determine the association of a husband's migration status with HR-HPV infection and cervical cytology status. RESULTS: In 265 women, the prevalence of HR-HPV was 7.5% (20/265), while the prevalence of abnormal cervical cytology, defined using the Bethesda system as atypical glandular cells of undetermined significance or worse, was 7.6% (19/251). Half of the study participants (50.8%, 130/256) had husbands who had reported migrating for work at least once. Women aged ≤34 years were significantly less likely to test positive for HR-HPV than women aged >34 years (OR 0.22, 95% CI 0.07 to 0.71). HR-HPV infection and abnormal cervical cytology status were not directly associated with a husband's migration. CONCLUSION: Older women were found to have a higher prevalence of HPV than younger women. It is possible that a husband's migration for work could be delaying HR-HPV infections in married women until an older age.


Asunto(s)
Migración Humana , Enfermedades de Inicio Tardío/epidemiología , Infecciones por Papillomavirus/epidemiología , Población Rural/estadística & datos numéricos , Esposos , Neoplasias del Cuello Uterino/epidemiología , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Nepal/epidemiología , Prevalencia , Medición de Riesgo , Encuestas y Cuestionarios
15.
Infect Genet Evol ; 46: 7-11, 2016 12.
Artículo en Inglés | MEDLINE | ID: mdl-27725301

RESUMEN

OBJECTIVES/BACKGROUND: Sequence variants in HPV16 confer differences in oncogenic potential; however, to date there have not been any HPV sequence studies performed in Nepal. The objective of this study was to characterize HPV16 viral genome sequences from Nepal compared to a reference sequence in order to determine their lineages. Additionally, we sought to determine if five High-grade Squamous Intraepithelial Lesion (HSIL) subjects were genetically distinct from the non-HSIL subjects. METHODS: DNA was isolated from exfoliated cervical cells from 17 individuals in Nepal who were previously identified to be HPV16-positive. A custom HPV16 Ion Ampliseq panel of multiplexed degenerate primers was designed that generated 47 overlapping amplicons and covered 99% of the viral genome for all known HPV16 variant lineages. All sequence data were processed through a custom quality control and analysis pipeline of sequence comparisons and phylogenetic analysis. RESULTS: There were high similarities across the genomes, with two major indels observed in the non-coding region between E5 and L2. Compared to the PAVE reference HPV16 genome, there were up to 9, 4, 38, 27, 8, 7, 52, and 32 nucleotide variants in the E6, E7, E1, E2, E4, E5, L2, and L1 genes in the Nepalese samples, respectively. Based on sequence variation, HPV16 from Nepal falls across the A, C, and D lineages in this study. We found no evidence of genetic distinctness between HSIL and non-HSIL subjects. CONCLUSIONS: The evolutionary and pathological characteristics of the representative HPV16 genomes from Nepal seem similar to results from other parts of the world and provide the basis for further studies.


Asunto(s)
Papillomavirus Humano 16/clasificación , Papillomavirus Humano 16/genética , Infecciones por Papillomavirus/virología , Cuello del Útero/virología , Estudios de Cohortes , Femenino , Genoma Viral/genética , Humanos , Epidemiología Molecular , Nepal/epidemiología , Infecciones por Papillomavirus/epidemiología , Filogenia , Enfermedades Uterinas/epidemiología , Enfermedades Uterinas/virología
16.
Clin Perinatol ; 32(3): 523-59, 2005 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-16085019

RESUMEN

Adverse pregnancy outcomes can follow direct placental, fetal, or neonatal infection, or preterm birth associated with vaginal, cervical, intrauterine, or even nonpelvic infections. These latter infections appear to be associated with the majority of very early preterm births, and may explain some of the long-term neurologic damage associated with preterm birth. Bacterial vaginosis and its associated intrauterine infections likely contribute far more to the overall burden of adverse pregnancy outcomes than the more classical perinatal infections such as rubella and syphilis.


Asunto(s)
Enfermedades Fetales/etiología , Enfermedades del Recién Nacido/etiología , Complicaciones Infecciosas del Embarazo , Resultado del Embarazo , Femenino , Enfermedades de los Genitales Femeninos/complicaciones , Enfermedades de los Genitales Femeninos/microbiología , Humanos , Recién Nacido , Embarazo
17.
Mitochondrial DNA ; 26(3): 445-51, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24102597

RESUMEN

Genetic polymorphism along mitochondrial DNA (mtDNA) defines population-specific signatures called mtDNA haplogroups. Estimation of mtDNA haplogroup distribution may be prone to errors, notably if the study sample is not drawn from a multicenter cohort. Here, we report on mtDNA diversity in a sample of African American individuals (n = 343) enrolled in a multicenter cohort. Sequencing of the hypervariable regions I and II of the D-loop control region showed that the most common mitochondrial variants are 73G, 146C, 150T, 152C, 189G, 16278T, and 16311C. In agreement with the published data, we observed 17 common mtDNA haplogroups: L0, L1, L1b, L1c, L2, L2a, L2b, L2c, L2e, L3, L3b, L3d, L3e, L3f, L3h, L3x, and L4. The most commonly observed haplogroup is L2a (19.8%), followed by L1b (10.2%). Overall, the observed mtDNA haplogroup distribution in our study is similar to those published for the African American and the African populations.


Asunto(s)
Negro o Afroamericano/genética , ADN Mitocondrial/genética , Variación Genética , Estudios de Cohortes , ADN Mitocondrial/análisis , ADN Mitocondrial/clasificación , Genética de Población , Haplotipos , Humanos , Filogenia , Polimorfismo de Nucleótido Simple , Análisis de Componente Principal , Análisis de Secuencia de ADN
19.
PLoS One ; 9(6): e101255, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24978811

RESUMEN

INTRODUCTION: Nepal 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. METHODS: Study 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. RESULTS: Of 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%). CONCLUSION: This 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.


Asunto(s)
Personal de Laboratorio Clínico/estadística & datos numéricos , Papillomaviridae/fisiología , Infecciones por Papillomavirus/epidemiología , Medición de Riesgo , Población Rural/estadística & datos numéricos , Manejo de Especímenes/métodos , Frotis Vaginal/métodos , Adolescente , Adulto , Conducta , Demografía , Femenino , Humanos , Persona de Mediana Edad , Nepal/epidemiología , Papillomaviridae/genética , Infecciones por Papillomavirus/virología , Prevalencia , ARN Mensajero/genética , ARN Mensajero/metabolismo , Tamaño de la Muestra , Adulto Joven
20.
AIDS Res Hum Retroviruses ; 29(6): 887-91, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23351216

RESUMEN

The Centers for Disease Control (CDC) testing recommendations suggest universal opt-out testing in all health care settings, including cancer clinics. The incidence of non-AIDS-defining cancers (NADCs) is on the rise among HIV patients. However, to date, no data exist on the prevalence of HIV infection among NADC patients in the United States. Knowledge of HIV infection may affect clinical management, prognosis, and overall patient survival and decrease new infections in the population. The purpose of this study was to determine the point seroprevalence of HIV infection in cancer patients being seen in medical oncology clinics. A total of 634 individuals (mean age=53.2 years) participated and were tested for HIV. None of the participants tested positive for HIV in any of the three clinics. Using a futility analysis, the upper end of the 95% confidence interval for prevalence of undiagnosed HIV in cancer patients was less than 0.3%. Most participants were female (59.2%) and non-Hispanic (96.6%). The majority of study participants were white (76.5%) or African-American (17.7%). Breast cancer (19.7%), colon cancer (10.3%), and melanoma (9.7%) were the most commonly reported non-AIDS-defining cancers. While our study suggested that there was no occurrence of undiagnosed HIV among NADC patients, it is important to note that our population was largely white, females with insurance and with a different distribution of cancer than the most prevalent NADC among HIV patients. Furthermore, one-third of the patients did not consent to participate and further studies are needed to assess reasons for their unwillingness along with other populations, specifically minorities and individuals with low socioeconomic status (SES).


Asunto(s)
Infecciones por VIH/epidemiología , Neoplasias/virología , Neoplasias de la Mama/virología , Neoplasias del Colon/virología , Femenino , Infecciones por VIH/complicaciones , Seroprevalencia de VIH , Humanos , Masculino , Melanoma/virología , Persona de Mediana Edad , Neoplasias/epidemiología , Estados Unidos/epidemiología
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