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1.
BMJ Glob Health ; 8(2)2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36759018

RESUMEN

INTRODUCTION: Economic sanctions restrict customary commercial and financial ties between states to induce change in political constitution or conduct of the targeted country. Although the stated goals of sanctions often include humanitarian objectives, prospective procedures for health risk assessment are not regularly incorporated in their implementation. Moreover, past experience suggests that the burden of economic isolation may fall on the civilian population. We present key findings from a WHO-sponsored evidence review on the impact of economic sanctions on health and health systems in low-income and middle-income countries, aiming at comprehensive coverage and explicit consideration of issues of causality and mechanisms. METHODS: Broad searches of PubMed and Google Scholar (1970-2021) were designed to retrieve published and grey English-language literature expected to cut across disciplines, terminology and research methods. Studies providing an impact estimate were rated by a structured assessment based on ROBINS-I risk of bias domains, synthesised via vote counting and contextualised into the broader literature through a thematic synthesis. RESULTS: Included studies (185) were mostly peer-reviewed, mostly single-country, largely coming from medicine and public health, and chiefly concerned with three important target countries-Iraq, Haiti and Iran. Among studies providing impact estimates (31), most raised multiple risk-of-bias concerns. Excluding those with data integrity issues, a significant proportion (21/27) reported consistently adverse effects of sanctions across examined outcomes, with no apparent association to assessed quality, focus on early episodes or publication period. The thematic synthesis highlights the complexity of sanctions, their multidimensionality and the possible mechanisms of impact. CONCLUSION: Future research should draw on qualitative knowledge to collect domain-relevant data, combining it with better estimation techniques and study design. However, only the adoption of a risk assessment framework based on prospective data collection and monitoring can certify claims that civilians are adequately protected.


Asunto(s)
Países en Desarrollo , Pobreza , Humanos , Salud Pública
2.
J Inj Violence Res ; 14(3)2022 Aug 27.
Artículo en Inglés | MEDLINE | ID: mdl-36030373

RESUMEN

BACKGROUND: Road traffic crashes are among the leading causes of death and disability in the world, particularly in low and middle-income countries. This study aimed at to conduct a social marketing formative research to inform the development of a campaign to manage driving speed on the intercity roads of Iran. METHODS: To carry out the social marketing formative research, a qualitative and quantitative study were conducted. Also, a literature review of the speed management strategies was carried out and an analysis of traffic accident data and speeding violations was performed in selected provinces during 2019 and 2020. RESULTS: Based on the findings of the qualitative study, perceived sense of lack of speed control, poor monitoring system, and law enforcement are the main reasons drivers exceed the speed limit. They mostly suggest using punitive levers and more stringent law enforcement practices for speed management. Literature reviews also confirm that to successfully develop an effective speed management plan a set of measures should be implemented together, including road safety engineering, raising awareness, social marketing strategies, and finally strict law enforcement. The overriding findings of the formative research revealed that to persuade Iranian drivers to respect the speed limit, the messages of the campaign should focus on strict law enforcement in the selected corridors. CONCLUSIONS: In the minds of the Iranian audience, strict law enforcement is of paramount importance for a speed management strategy to work; hence it should be taken into consideration when tailoring the campaign messages. From the findings of the present study, it can be concluded that to manage speed on intercity routes in Iran, a social marketing campaign is needed to encourage compliance with speed limits.

3.
BMC Public Health ; 22(1): 1248, 2022 06 24.
Artículo en Inglés | MEDLINE | ID: mdl-35739516

RESUMEN

BACKGROUND: Non-communicable diseases are imposing a considerable burden on Iran. This study aims to assess the Return on Investment (ROI) for implementation of Non-communicable diseases (NCDs) prevention program in Iran. METHODS: Four disease groups including cardiovascular diseases, diabetes, cancer, and respiratory diseases were included in our ROI analysis. The study followed four steps: 1) Estimating the total economic burden of NCDs using the Cost-of-Illness approach. 2) Estimating the total costs of implementing clinical and preventive interventions using an ingredient based costing at delivering level and a program costing method at central level.3) Calculating health impacts and economic benefits of interventions using the impact measures of avoided incidence, avoided mortality, healthy life years (HLYs) gained, and avoided direct treatment costs. 4) Calculating the ROI for each intervention in 5- and 15- year time horizons. RESULTS: The total economic burden of NCDs to the Iranian economy was IRR 838.49 trillion per year (2018), which was equivalent to 5% of the country's annual Gross Domestic Product (GDP). The package of NCD will lead to 549 000 deaths averted and 2 370 000 healthy life years gained over 15 years, and, financially, Iranian economy will gain IRR 542.22 trillion over 15 years. The highest ROI was observed for the package of physical activity interventions, followed by the interventions addressing salt, tobacco package and clinical interventions. Conclusions NCDs in Iran are causing a surge in health care costs and are contributing to reduced productivity. Those actions to prevent NCDs in Iran, as well as yielding to a notable health impact, are giving a good economic return to the society. This study underscores an essential need for establishment of a national multi-sectorial NCD coordination mechanism to bring together and strengthen existing cross-agency initiatives on NCDs.


Asunto(s)
Enfermedades Cardiovasculares , Enfermedades no Transmisibles , Atención a la Salud , Humanos , Inversiones en Salud , Irán/epidemiología , Enfermedades no Transmisibles/epidemiología , Enfermedades no Transmisibles/prevención & control
4.
East Mediterr Health J ; 28(1): 3-4, 2022 Jan 31.
Artículo en Inglés | MEDLINE | ID: mdl-35165872

RESUMEN

The United Nations launched the Sustainable Development Agenda 2030 and its 17 Sustainable Development Goals (SDGs) in 2015, as a more detailed and ambitious follow-up to the Millennium Developments Goals (MDGs). Health and wellbeing of all, at all ages, is addressed by the third SDG (SDG3) and health-related targets of other SDGs. However, progress to date on the health-related SDGs in the Eastern Mediterranean Region (EMR) is not on track. Although there was progress in over half of the 50 health-related SDG targets and indicators between 2015 and 2019, there is still a long way to go. Progress is required, among others, in reducing maternal, child and neonatal mortality; increasing vaccination coverage; reducing the number of cases of malaria and HIV; and in tackling the increase in mortality rates due to noncommunicable diseases. Much progress is needed in many health-related SDGs considered as important social, economic and environmental determinants of health.


Asunto(s)
Fondos de Seguro , Desarrollo Sostenible , Niño , Salud Global , Humanos , Recién Nacido , Región Mediterránea/epidemiología , Naciones Unidas
5.
Med J Islam Repub Iran ; 36: 167, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-37159755

RESUMEN

Background: Given the importance of appropriate response to prevent and manage Non-Communicable Diseases (NCDs), this study aimed to analyze the state of NCDs services at the level of the PHC system during the COVID-19 pandemic and to determine the main strategies. Methods: In this qualitative study, first, the circulars and guides in Iran's PHC system from the beginning of the pandemic to the end of September 2020 were retrieved manually and by searching the internal websites of the Ministry of Health. All documents about decision-making or governance and coordination mechanisms for the provision of NCDs services were enrolled and analyzed. In the second phase, the status of service delivery for major NCDs was presented in a model, and finally, SWOT analysis was used to analyze the situation and determine the main strategies. Results: 25 out of 199 circulars and guides were eligible and analyzed. In the crisis phase, most risk assessment, screening, and diagnosis services for NCDs have been suspended, and follow-up and care of patients with major NCDs were done by telephone. In the reopening phase, the general strategies and strategies to increase capacity and provide delayed care were adopted, and the PHC model of the provision of essential services for the major NCDs was developed in low-risk, intermediate and high-risk pandemic conditions. Finally, 16 main strategies were determined with the approach of integrating and focusing on essential services, considering vulnerable groups and the use of E-health technologies. Conclusion: The results indicate on interruption of NCDs services in the crisis phase while adopting strategies for responding to the pandemic. Revision of the COVID-19 guides with a particular focus on NCDs is recommended.

6.
Med J Islam Repub Iran ; 36: 174, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36908938

RESUMEN

Background: The COVID-19 pandemic has caused significant disruptions in the provision of non-communicable disease (NCDs) prevention and control services in many countries, and there is a concern that it would lead to long-term complications of the diseases. The aim of this study is to assess the changes in the provisions of selected NCD services before and after the COVID-19 epidemic in Iran's primary healthcare system. Methods: In this descriptive-analytical retrospective study, the number of eight NCD services provided during the first 10 months of the COVID-19 pandemic from Feb 2020 to Dec 2020 were compared with the same period in the previous year using the data from the Iranian integrated electronic health record system (SIB) and also the association between the number of deaths due to COVID-19 and a sample of NCD services were assessed using cross-correlation analysis. The statistical analysis was performed in Stata Software v.14. Results: The NCD services have decreased by an average of 18.89% compared to the same period in the previous year; this decline was much more severe at the beginning of the epidemic period (up to 75% in some services) and was greater in physician-provided services than in non-physician services. Also, examining the course of the selected services during this period, a gradual compensation was evident after the initial reduction. Conclusion: The general trend of the selected services of prevention and control of NCDs in the PHC system of Iran within 10 months after the onset of COVID-19 showed a sharp decline and subsequent gradual compensation. Although the process of compensation in some services may be considered somewhat reassuring, in the case of some essential services, more effort and attention to the implementation of programs or compensatory policies seem necessary.

7.
Sci Rep ; 11(1): 23294, 2021 12 02.
Artículo en Inglés | MEDLINE | ID: mdl-34857785

RESUMEN

Cancer patients are at risk for severe complications or death from COVID-19 infection. Therefore, the need for routine COVID-19 testing in this population was evaluated. Between 1st August and 30th October 2020, 150 cancer patients were included. Symptoms of COVID-19 infection were evaluated. All eligible individuals went through RT-PCR and serological tests for COVID-19. At the same time, 920 non-cancer patients were recruited from a random sample of individuals who were subject to routine molecular and anti-body screening tests. Of 150 cancer patients, 7 (4.7%) were RT-PCR positive. Comorbidity made a significant difference in the RT-PCR positivity of cancer patients, 71.4% positive versus 25.8% negative (P-value = 0.02). The average age for negative and positive groups was 53.3 and 58.2 respectively (P-value = 0.01). No significant difference was observed between cancer and non-cancer patients regarding COVID-19 antibody tests. However, cancer patients were 3 times less likely to have a positive RT-PCR test result OR = 0.33 (CI: 0.15-0.73). The probability of cancer patients having a positive routine test was significantly lower than non-cancer patients, and the concept that all cancer patients should be routinely tested for COVID-19 may be incorrect. Nevertheless, there may be a subgroup of patients with comorbidities or older age who may benefit from routine COVID-19 testing. Importantly, these results could not be subjected to multivariate analysis.


Asunto(s)
Prueba de COVID-19/métodos , COVID-19/diagnóstico , Pruebas Diagnósticas de Rutina/métodos , Neoplasias , Adulto , Anciano , COVID-19/sangre , COVID-19/complicaciones , COVID-19/genética , Femenino , Humanos , Inmunoglobulina G/sangre , Inmunoglobulina M/sangre , Masculino , Persona de Mediana Edad , Neoplasias/complicaciones , Estudios Retrospectivos
8.
PLoS One ; 12(2): e0169530, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28207809

RESUMEN

BACKGROUND: Despite a non-decreasing HIV epidemic, international donors are soon expected to withdraw funding from Kazakhstan. Here we analyze how allocative, implementation, and technical efficiencies could strengthen the national HIV response under assumptions of future budget levels. METHODOLOGY: We used the Optima model to project future scenarios of the HIV epidemic in Kazakhstan that varied in future antiretroviral treatment unit costs and management expenditure-two areas identified for potential cost-reductions. We determined optimal allocations across HIV programs to satisfy either national targets or ambitious targets. For each scenario, we considered two cases of future HIV financing: the 2014 national budget maintained into the future and the 2014 budget without current international investment. FINDINGS: Kazakhstan can achieve its national HIV targets with the current budget by (1) optimally re-allocating resources across programs and (2) either securing a 35% [30%-39%] reduction in antiretroviral treatment drug costs or reducing management costs by 44% [36%-58%] of 2014 levels. Alternatively, a combination of antiretroviral treatment and management cost-reductions could be sufficient. Furthermore, Kazakhstan can achieve ambitious targets of halving new infections and AIDS-related deaths by 2020 compared to 2014 levels by attaining a 67% reduction in antiretroviral treatment costs, a 19% [14%-27%] reduction in management costs, and allocating resources optimally. SIGNIFICANCE: With Kazakhstan facing impending donor withdrawal, it is important for the HIV response to achieve more with available resources. This analysis can help to guide HIV response planners in directing available funding to achieve the greatest yield from investments. The key changes recommended were considered realistic by Kazakhstan country representatives.


Asunto(s)
Antirretrovirales/economía , Apoyo Financiero , Infecciones por VIH/economía , Costos de la Atención en Salud/legislación & jurisprudencia , Implementación de Plan de Salud , Necesidades y Demandas de Servicios de Salud , Asignación de Recursos/legislación & jurisprudencia , Adolescente , Adulto , Antirretrovirales/uso terapéutico , Niño , Preescolar , Análisis Costo-Beneficio , Femenino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , VIH-1/aislamiento & purificación , Humanos , Lactante , Recién Nacido , Kazajstán , Masculino , Persona de Mediana Edad , Adulto Joven
9.
Afr J Reprod Health ; 17(2): 80-8, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24069754

RESUMEN

This study reports on findings of a pilot of community-based distribution (CBD) of injectable contraceptives in two local government areas (LGAs) of Gombe State, Nigeria. From August 2009 to January 2010, the project enrolled, trained and equipped community health extension workers (CHEWs) to distribute condoms, oral and injectable contraceptives in communities. The project mobilized communities and stakeholders to promote Family Planning (FP) services in the selected communities. Using anonymised unlinked routine service data, the mean couple years of protection (CYP) achieved through CBD was compared to that achieved in FP clinics. The CBD mean CYP for injectables- depo medroxy-progesterone acetate (DMPA) and norethisterone enantate was higher (27.72 & 18.16 respectively) than the facility CYP (7.21 & 5.08 respectively) (p < 0.05) with no injection related complications. The CBD's mean CYP for all methods was also found to be four times higher (11.65) than that generated in health facilities (2.86) (p < 0.05). This suggests that the CBD of injectable contraceptives is feasible and effective, even in a setting like northern Nigeria that has sensitivities about FP.


Asunto(s)
Agentes Comunitarios de Salud , Anticonceptivos Femeninos/administración & dosificación , Atención a la Salud/organización & administración , Promoción de la Salud/organización & administración , Acetato de Medroxiprogesterona/administración & dosificación , Noretindrona/análogos & derivados , Adolescente , Adulto , Condones , Condones Femeninos , Estudios de Factibilidad , Femenino , Humanos , Inyecciones , Masculino , Mortalidad Materna , Persona de Mediana Edad , Nigeria/epidemiología , Noretindrona/administración & dosificación , Factores Socioeconómicos
10.
BMC Clin Pharmacol ; 12: 7, 2012 Feb 27.
Artículo en Inglés | MEDLINE | ID: mdl-22369677

RESUMEN

BACKGROUND: Data on adverse drug reactions (ADRs) related to antiretroviral (ARV) use in public health practice are few indicating the need for ART safety surveillance in clinical care. OBJECTIVES: To evaluate the incidence, type and risk factors associated with adverse drug reactions (ADRs) among patients on antiretroviral drugs (ARV). METHODS: Patients initiated on ARVs between May 2006 and May 2009 were evaluated in a retrospective cohort analysis in three health facilities in Nigeria. Regimens prescribed include nucleoside backbone of zidovudine (AZT)/lamivudine (3TC), stavudine (d4T)/3TC, or tenofovir (TDF)/3TC in combination with either nevirapine (NVP) or efavirenz (EFV). Generalized Estimating Equation (GEE) model was used to identify risk factors associated with occurrence of ADR. RESULTS: 2650 patients were followed-up for 2456 person-years and reported 114 ADRs (incidence rate = 4.6/100 person-years).There were more females 1706(64%) and 73(64%) of the ADRs were reported by women. Overall, 61(54%) of ADRs were reported by patients on AZT with 54(47%) of these occurring in patients on AZT/NVP. The commonest ADRs reported were pain 25(30%) and skinrash 10(18%). Most ADRs were grade 1(39%) with only 1% being life threatening (grade 4). Adjusted GEE analysis showed that ADR was less likely to occur in patients on longer duration of ART compared to the first six months on treatment; 6-12 months AOR 0.38(95% CI:0.16-0.91) and 12-24 months AOR 0.34(95% CI:0.16-0.73) respectively. Compared to patients on TDF, ADR was less likely to occur in patients on d4T and AZT AOR 0.18(95% CI 0.05-0.64) and AOR 0.24(95% CI:0.7-0.9) respectively. Age, gender and CD4 count were not significantly associated with ADRs. CONCLUSION: ADRs are more likely to occur within the first six months on treatment. Close monitoring within this period is required to prevent occurrence of severe ADR and improve ART adherence. Further research on the tolerability of tenofovir in this environment is recommended.


Asunto(s)
Antirretrovirales/efectos adversos , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , Exantema/inducido químicamente , Infecciones por VIH/tratamiento farmacológico , Dolor/inducido químicamente , Adenina/efectos adversos , Adenina/análogos & derivados , Adolescente , Adulto , Alquinos , Benzoxazinas/efectos adversos , Estudios de Cohortes , Ciclopropanos , Femenino , Humanos , Incidencia , Lamivudine/efectos adversos , Masculino , Persona de Mediana Edad , Nevirapina/efectos adversos , Nigeria/epidemiología , Organofosfonatos/efectos adversos , Estudios Retrospectivos , Factores de Riesgo , Estavudina/efectos adversos , Tenofovir , Zidovudina/efectos adversos
11.
Sex Transm Infect ; 87(1): 65-70, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20820061

RESUMEN

OBJECTIVE: To evaluate HIV and syphilis prevalence among men who have sex with men (MSM) in Nigeria, and assess their HIV-related risk behaviours and exposure to HIV prevention interventions. METHODS: Cross-sectional study using respondent-driven sampling conducted in Lagos, Kano and Cross River states, Nigeria, between July and September 2007. RESULTS: A total of 879 MSM participated, 293 from each state. Eight participants (1.1%, CI 0.1% to 2.2%) in Cross River, 27 (9.3%, CI 5.7% to 15.4%) in Kano and 74 (17.4%, CI 12.3% to 23.2%) in Lagos tested positive for HIV. No syphilis was detected. The median age was 22 years. MSM reported an average of 4.2 male anal sex partners in the past 6 months. Between 24.4% (Lagos) and 36.0% (Kano) of MSM reported selling sex to other men. Up to 49.7% of MSM reported sex with a girlfriend and ≤ 6.5% purchased sex from female sex workers. Consistent condom use in commercial sex with other men over the past 6 months ranged from 28.0% (Cross River) to 34.3% (Kano), in contrast to between 23.9% (Kano) and 45.8% (Lagos) for non-commercial sex. Associations with HIV positivity included age in the three states, having been the receptive partner in anal sex in the past 6 months in Lagos and in Lagos and Kano feeling at risk of HIV. CONCLUSION: Large differentials in HIV prevalence between states together with high mobility, inconsistent condom use and behavioural links with female sex partners, have the potential for further HIV transmission within MSM networks, and between MSM and the general population.


Asunto(s)
Infecciones por VIH/epidemiología , Homosexualidad Masculina/psicología , Asunción de Riesgos , Condones/estadística & datos numéricos , Estudios Transversales , Infecciones por VIH/psicología , Humanos , Masculino , Nigeria/epidemiología , Prevalencia , Trabajo Sexual/estadística & datos numéricos , Parejas Sexuales , Sexo Inseguro/psicología , Sexo Inseguro/estadística & datos numéricos , Adulto Joven
12.
Afr J Reprod Health ; 14(1): 109-16, 2010 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-20695143

RESUMEN

The lack of integrated M&E system makes it difficult to assess the effectiveness of HIV and family planning (FP) service integration. Since 2007, Nigeria integrated FP and HIV M&E systems. A pre-post survey compared the availability and use of FP-HIV integration M&E tools six months pre- and 12-months post-integration in 71 health facilities supported by the Global HIV/AIDS Initiative Nigeria (GHAIN). Pre-integration, four facilities (6%) had national FP registers, 32 (45%) had monthly aggregated FP data and 33 (46%) reported data up to national level. Post-integration, all (100%) facilities used national FP register with FP-HIV integration indicators, and reported data up to national level. Sixty six facilities (93%) had at least one monthly supervisory visit. Average number of FP clients per facility referred for HIV testing increased from five in the first month to 15 by month 12 post-integration. Leveraging resources of HIV programs improved significantly the monitoring of FP-HIV services integration.


Asunto(s)
Prestación Integrada de Atención de Salud/organización & administración , Infecciones por VIH/prevención & control , Servicios de Salud Reproductiva/organización & administración , Prestación Integrada de Atención de Salud/normas , Práctica Clínica Basada en la Evidencia , Humanos , Nigeria , Servicios de Salud Reproductiva/normas
13.
AIDS ; 23 Suppl 1: S97-S103, 2009 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-20081394

RESUMEN

OBJECTIVE: To measure changes in service utilization of a model integrating family planning with HIV counselling and testing (HCT), antiretroviral therapy (ART) and prevention of mother-to-child transmission (PMTCT) in the Nigerian public health facilities. DESIGN: It is a retrospective survey of attendance and family planning commodity uptake in 71 health facilities in Nigeria that analyzes the preintegration and postintegration periods between March 2007 and January 2009. METHODS: A prepost retrospective comparison of mean attendance at family planning clinics and couple-years of protection (CYP) compared 6 months preintegration with 9 months postintegration period. An analysis of service ratios was conducted, relating completed referrals at family planning clinics to service utilization at the referring HIV clinics. RESULTS: Mean attendance at family planning clinics increased significantly from 67.6 in preintegration to 87.0 in postintegration. The mean CYP increased significantly from 32.3 preintegration to 38.2 postintegration. Service ratio of referrals from each of the HIV clinics was low but increased in the postintegration period by 4, 34 and 42 per 1000 clients from HCT, ART and PMTCT clinics, respectively. Service ratios were higher in primary healthcare settings than in secondary or tertiary hospitals. Attendance by men at family planning clinics was significantly higher among clients referred from HIV clinics. CONCLUSION: Family planning-HIV integration using the referral model improved family planning service utilization by clients accessing HIV services, but further improvement is possible. Male utilization of family planning services also improved. The government of Nigeria should review the family planning user fee policy and scale up the integration in primary healthcare facilities.


Asunto(s)
Prestación Integrada de Atención de Salud/organización & administración , Servicios de Planificación Familiar/organización & administración , Infecciones por VIH/prevención & control , Adulto , Prestación Integrada de Atención de Salud/normas , Servicios de Planificación Familiar/estadística & datos numéricos , Femenino , Infecciones por VIH/epidemiología , Humanos , Masculino , Nigeria/epidemiología , Aceptación de la Atención de Salud , Embarazo , Evaluación de Programas y Proyectos de Salud , Derivación y Consulta , Estudios Retrospectivos , Factores Sexuales
14.
J Infect Dis ; 198(3): 427-33, 2008 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-18558870

RESUMEN

BACKGROUND: Human infections with the tissue nematode Onchocerca volvulus show strong interindividual variation in intensity, which cannot be explained by differences in exposure alone. Several lines of evidence suggest a relevant influence of human genetics. METHODS: In a genome-wide search for genetic determinants of resistance, we studied 196 siblings from 51 families exposed to endemic O. volvulus transmission in the forest zone of Ghana, West Africa. The numbers of worm larvae in the skin (i.e., microfilariae), which are the established measure of O. volvulus infection intensity, were counted in 4 small skin biopsy specimens (i.e., skin snips), and the numbers of palpable subcutaneous worm nodules (i.e., onchocercomata) were assessed. Numbers were corrected for age and exposure and were analyzed for linkage to 377 autosomal microsatellite markers and additional markers in genomic regions of interest. RESULTS: Linkage was detected between the numbers of microfilariae and chromosome 2p21-p14 (maximum multipoint log(10) of odds (LOD) score of 3.80 at marker position D2S2378; empirical P=2.9 x 10(-5)). CONCLUSIONS: This finding provides strong evidence that a human genetic factor influences the intensity of O. volvulus infection. The strength of the linkage signal may facilitate the identification of the decisive genetic variants.


Asunto(s)
Cromosomas Humanos Par 2 , Inmunidad Innata , Onchocerca volvulus/inmunología , Oncocercosis/inmunología , Adolescente , Adulto , Animales , Niño , Mapeo Cromosómico , Femenino , Ghana , Humanos , Masculino , Repeticiones de Microsatélite , Persona de Mediana Edad , Piel/parasitología
15.
J Infect Dis ; 185(8): 1148-54, 2002 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-11930325

RESUMEN

The cellular immune response to Onchocerca volvulus antigen (OvAg) was studied in 551 persons exposed to O. volvulus transmission in a hyperendemic area of Ghana, West Africa. A whole-blood assay showed that, in response to a soluble O. volvulus extract, cell proliferation, as well as interleukin (IL)-5 and IL-13 concentrations in the supernatants, were high in cultures of blood from microfilaria (mf)-negative persons and significantly decreased with increasing mf counts of the donors. Only background concentrations of interferon (IFN)-gamma were found, and these did not correlate with mf counts. In response to a mitogen, cells from all persons strongly reacted with proliferation and secretion of all 3 cytokines studied. These findings show that the response of human peripheral blood cells to OvAg does not include significant IFN-gamma production; that mf negativity is associated with IL-5 and IL-13 production but not, as previously suggested, with IFN-gamma production; and that IL-5 and IL-13 production decreases with increasing mf density.


Asunto(s)
Antígenos Helmínticos/inmunología , Interferón gamma/biosíntesis , Interleucina-13/biosíntesis , Interleucina-5/biosíntesis , Onchocerca volvulus/inmunología , Oncocercosis/inmunología , Adolescente , Adulto , Animales , Niño , Femenino , Humanos , Activación de Linfocitos , Masculino , Microfilarias/aislamiento & purificación , Persona de Mediana Edad , Onchocerca volvulus/parasitología
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