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OBJECTIVE: To estimate the trend in infant mortality, inequality between jurisdictions and inequality associated with social conditions in Argentina between 1980 and 2017. METHODS: Ecological and time series study of infant mortality and its inequality. Official data on infant mortality, births and unmet basic needs were obtained; the infant mortality rate, the Gini index and the concentration index were calculated. The trend was also analyzed with a linear regression model and the regression coefficient and its statistical significance were calculated. RESULTS: Infant mortality was reduced by 71.2% (from 32.41 to 9.34 per 1 000 live births). Inequality by jurisdiction also decreased, and the Gini index fell from 0,163 to 0,09. Inequality associated with social conditions also showed a reduction, and the concentration index was reduced from -0.153 to -0.079. Although infant mortality declined throughout the period, this decline was not always accompanied by a reduction in the Gini index and the concentration index. CONCLUSIONS: The trend in the infant mortality rate decreased while the inequality in its distribution by jurisdiction and the inequality associated with social conditions did not always accompany this reduction.
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BACKGROUND: The prevalence of respiratory symptoms and confirmed tuberculosis (TB) among indigenous groups in Paraguay is unknown. METHODS: This study assessed the prevalence of respiratory symptoms, confirmed pulmonary TB, and associated socio-economic factors among indigenous Paraguayan populations. Indigenous persons residing in selected communities were included in the study. A total of 24,352 participants were interviewed at home between October and December 2012. Respiratory symptomatic individuals were defined as those with respiratory symptoms of TB. A hierarchical Poisson regression analysis was performed with four levels: individual characteristics, living conditions and environmental characteristics, source of food, and type of nutrition. FINDINGS: In this study, 1,383 participants had respiratory symptoms (5.7%), but only 10 had culture-confirmed TB (41/100,000 inhabitants). The small number of cases did not allow evaluation of the risk factors for TB. Age older than 37 years was associated with a two-fold increased risk of symptoms. Female sex; family history of TB; type of housing; home heating; a lack of hunting, fishing, or purchasing food; and a lack of vegetable consumption were also associated with the presence of symptoms. A lack of cereal consumption had a protective effect. Members of the Ayoreo or Manjui ethnic groups had a three-fold increased risk of symptoms. MAIN CONCLUSION: Individual characteristics, dietary habits, and belonging to specific ethnic groups were associated with respiratory symptoms.
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Indígenas Sudamericanos/estadística & datos numéricos , Trastornos Respiratorios/epidemiología , Tuberculosis Pulmonar/epidemiología , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Paraguay/epidemiología , Prevalencia , Factores de RiesgoRESUMEN
Since the creation of Union of South American Nations (UNASUR), health policies became a strategic factor in South America to collectively balance the legacy of neoliberal policies in the region. The aim of this article is first to describe the social, political, and economic processes that explain the emergence of UNASUR and its focus on social policy through healthcare. We then analyze how by virtue of UNASUR's Health Council, healthcare became the spearhead of cooperation giving way to novel forms of diplomacy. In so doing, this article contributes to a broader understanding of the regional health diplomacy and the process of unasurization of health policies as the process of building a new health framework.
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Molecular mechanisms by which fertilization competent acrosome-reacted sperm bind to the oolemma remain uncharacterized. To identify oolemmal binding partner(s) for sperm acrosomal ligands, affinity panning was performed with mouse oocyte lysates using sperm acrosomal protein, SLLP1 as a target. An oocyte specific membrane metalloproteinase, SAS1B (Sperm Acrosomal SLLP1 Binding), was identified as a SLLP1 binding partner. cDNA cloning revealed six SAS1B splice variants, each containing a zinc binding active site and a putative transmembrane domain, with signal peptides in three variants. SAS1B transcripts were ovary specific. SAS1B protein was first detected in early secondary follicles in day 3 ovaries. Immunofluorescence localized SAS1B to the microvillar oolemma of M2 oocytes. After fertilization, SAS1B decreased on the oolemma and became virtually undetectable in blastocysts. In transfected CHO-K1 cells SAS1B localized to the surface of unpermeabilized cells. Recombinant and native SLLP1 co-localized with SAS1B to the microvillar domain of ovulated M2 oocytes. Molecular interactions between mouse SLLP1 and SAS1B were demonstrated by surface plasmon resonance, far-western, yeast two-hybrid, recombinant- and native-co-IP analyses. SAS1B bound to SLLP1 with high affinity. SAS1B had protease activity, and SAS1B protein or antibody significantly inhibited fertilization. SAS1B knockout female mice showed a 34% reduction in fertility. The study identified SAS1B-SLLP1 as a pair of novel sperm-egg binding partners involving the oolemma and intra-acrosomal compartment during fertilization.
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Fertilización , Isoantígenos/metabolismo , Metaloproteasas/metabolismo , Oocitos/metabolismo , Proteínas de Plasma Seminal/metabolismo , Acrosoma/metabolismo , Empalme Alternativo , Animales , Unión Competitiva , Far-Western Blotting , Células CHO , Membrana Celular/metabolismo , Cricetinae , Cricetulus , Femenino , Inmunoprecipitación , Isoantígenos/genética , Masculino , Metaloproteasas/genética , Ratones , Ratones Endogámicos ICR , Ratones Noqueados , Embarazo , Unión Proteica , Isoformas de Proteínas/genética , Isoformas de Proteínas/metabolismo , Proteínas de Plasma Seminal/genética , Interacciones Espermatozoide-Óvulo , Resonancia por Plasmón de Superficie , Técnicas del Sistema de Dos HíbridosRESUMEN
PURPOSE: The aim of the study is to report successful outcome (live births) after sperm sorting with annexin V-MACS on cryopreserved spermatozoa with high level of sperm DNA fragmentation from a cancer patient survivor. METHODS: Cryopreserved spermatozoa were sorted with annexin V-MACS prior to ICSI. Sperm DNA fragmentation was evaluated by SCSA(®) and TUNEL. RESULTS: The couple had two previous IVF/ICSI cycles failures using sperm cryopreserved before cancer treatment. On third ICSI cycle attempt results were as follow: pre-annexin V-MACS sperm quality: 10 × 10(6)/ml, 3.3 % progressive motility, 1 % normal forms, TUNEL: 72.5 % positive cells, SCSA(®): 76.6 % DFI. Post-annexin V-MACS sperm quality: 2.8 × 10(6)/ml, 10 % progressive motility, TUNEL: 58.8 % positive cells. Eight metaphase II oocytes were collected, 4 fertilized, 2 embryos were transferred on day 3 and healthy twins were born (1 boy, 1 girl). CONCLUSIONS: Annexin V-MACS technique could be a potential tool to improve sperm quality on cryopreserved spermatozoa of cancer patient and improve ICSI outcome.
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Anexina A5/administración & dosificación , Criopreservación , Magnetismo , Microesferas , Inyecciones de Esperma Intracitoplasmáticas/métodos , Espermatozoides/citología , Sobrevivientes , Adulto , Separación Celular/métodos , Femenino , Humanos , Recién Nacido , Linfoma no Hodgkin , Masculino , Embarazo , Resultado del Embarazo , Análisis de Semen , Espermatozoides/efectos de los fármacos , GemelosRESUMEN
The aim of this article is to provide an analysis of the mortality curve for tuberculosis in Argentina throughout the twentieth century, from 1911 to 2007. Using data from various official sources, the mortality rate is divided into historical phases and sub-periods, in order to show how the behavior of tuberculosis mortality depended on the historical moment. Thus, the progress of the disease is linked to the methods that were developed to combat it. The fluctuations in mortality are analyzed by regions of the country, on the assumption that mortality varied according to economic and social conditions and the development of healthcare.
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The article seeks to shed light on the role of regional organizations in strengthening health research systems in Africa, how they operate and how they work, as well as debts and future challenges. As can be observed also in South America, the continued strengthening of health research requires strategic thinking about the roles, comparative advantages, and capacity of regional organizations to facilitate the flourishing of health research systems. Health research is a strategic field for the transformation of socio-health inequalities on the one hand and the reduction of regional asymmetries on the other. Thus, regional organizations represent key actors in strengthening health research systems and the regional research agenda reinforces its sovereign condition in the autonomous definition of relevant topics and financing. In this process, integration mechanisms face a great challenge, as shown by the recent pandemic, not only in Africa but also in South America.
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Organizaciones , Humanos , América del Sur , ÁfricaRESUMEN
BACKGROUND: In Argentina, approximately 9,000 new cases of tuberculosis (TB) are recorded every year, representing an incidence rate of 22 cases per 100,000 inhabitants. There are no reported studies in Argentina examining the factors that influence the unequal distribution of the disease. The aim of the study was to identify the relationship between the distribution of social and economic factors and TB in Argentina between 2008 and 2012. METHOD: An ecologic study involving 525 departmental jurisdictions was conducted. Simple linear regression analysis was performed, followed by multiple linear regression for each group of determinants. A final model of determinants of TB's incidence was constructed from a model of multiple linear regression. RESULTS: The following determinants explain 43% of the variability of TB's incidence rate among different jurisdictions: overcrowding, proportion of households with a sewage network, proportion of examined patients with respiratory symptoms and proportion of patients who discontinued treatment. DISCUSSION: This study makes an important contribution to a better understanding of the factors influencing the TB occurrence in Argentina, which is the result of a multidimensional and complex process. Thesefactors make part of this disease's social determination. CONCLUSION: TB incidence is associated with different determinants, from multiple levels. Inequalities in its distribution in Argentina are driven by the unequal distribution of key social determinants.
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Tuberculosis Pulmonar/epidemiología , Argentina/epidemiología , Humanos , Incidencia , Características de la Residencia , Factores de Riesgo , Factores SocioeconómicosRESUMEN
Attention to health policies in Southern regional organisations reveals a new 'social turn' in the regional political economy of international cooperation. The aims of this paper are twofold. First, it aims to establish the extent to which the Union of South American Nations (UNASUR) has adopted and sustained policy interventions committed to addressing social inequities and asymmetries in relation to health, as indicated by regional policy agendas, policy development processes and resourcing. Second, it seeks to understand how UNASUR is mobilising national and regional actors in support of such policies. Our analysis of documentary sources and interviews leads us to draw the following conclusions. First, we argue that the UNASUR regional framework has a committed social equity/rights focus in relation to access to health care and medicines, with a clear focus on reducing asymmetries between countries. Second, although UNASUR does not enforce national commitments on health and medicines, it nonetheless plays a role in expanding domestic policy horizons and policy capacities. In this respect, we find that UNASUR interventions lead to initiatives and actions aimed at implementing reforms, setting targets and defining goals nationally. Third, in global arena, UNASUR enhances the visibility and 'voices' of the member states.
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Política de Salud , Derechos Humanos , Formulación de Políticas , Accesibilidad a los Servicios de Salud , Humanos , América del SurRESUMEN
The aim of this paper is twofold. First, it aims to investigate the increased interest in health as an important dimension of the foreign policy and diplomatic concerns together with the emergence of a new framework for regional health integration and regional health diplomacy. Second, it seeks to understand the role and practices of new regional blocs in the field of health and whether they are conducting to the emergence of new strategies for addressing health regional policies in South America. The regional policy process relates to health as a right. Thus, some practices and processes in social policy are setting new standards for political and social cohesion in the construction of new regionalism. Health crosses national, regional, and global agendas in a multi-directional fashion, rather than via one-way, top-down policy transfer. A special feature of Unasur is upholding regional health sovereignty despite the unique fact that member countries retain national autonomy. Unasur has projected foreign policy that promotes social values in ways that seem innovative. Experience as Unasur shows that regional organisms can become a game changer in global diplomacy and an influential actor in the international agenda. Resumen El objetivo de este artículo es doble. En primer lugar,investigar el creciente interés en la salud como una dimensión importante de la política exterior, en sintonía con el surgimiento de un nuevo marcopara la integración regional y la diplomacia en salud. En segundo lugar, comprender el papel y las prácticas de los nuevos bloques regionales en el campo de la salud y si estasconducena la emergencia de nuevas estrategias para abordar las políticas sanitarias regionales en América del Sur. Los nuevos procesos de integración regional se refieren a la salud como un derecho. Así, algunas prácticas y procesos de la política regional están estableciendo nuevos patrones de cohesión política y social en el avancede un nuevo regionalismo. La salud en este proceso de formulación e implementación de la política regional,atraviesa las agendas nacionales, regionales y globales de forma multidireccional. Un valor agregado de Unasur es su propuesta de avanzar es pos de una mayor soberanía regional en salud, a pesar del hecho de que los países miembros mantienen su autonomía nacional. En este sentido, Unasur ha proyectado una política exterior que promueve principios y valores a partir de un enfoque innovador. El caso de Unasur muestra que los organismos regionales tienen el potencial para cambiar las reglas (y el resultado) del juego en la diplomacia global y convertirse en actores influyentes en la agenda internacional.
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Salud Global , Política de Salud , Derechos Humanos , Diplomacia , Disparidades en el Estado de Salud , Humanos , Cooperación Internacional , Política , América del SurRESUMEN
Introducción: la tuberculosis (TB) persiste como un importante problema de salud pública en Argentina con una concentración preocupante en grandes centros urbanos. El objetivo de este estudio es la recuperación de los sentidos y las prácticas del proceso de atención-cuidado de la TB por parte de profesionales en una red pública de servicios de salud de un gran conglomerado urbano. Metodología: se realizó un análisis exploratorio con enfoque cualitativo, a partir de entrevistas semiestructuradas a integrantes de equipos sanitarios en un hospital y en centros de salud de la Ciudad Autónoma de Buenos Aires (CABA). Resultados: se identificaron diferentes matices de sentido acerca de la complejidad en el abordaje de la TB, estos variaban de acuerdo con las características de los servicios y las personas con TB. Se describieron estrategias para el tratamiento de casos difíciles: disponer de equipos interdisciplinarios, involucrar a otros actores de salud y dialogar con organizaciones de la sociedad civil bajo un enfoque territorial. Conclusiones: el control de la problemática de la TB en los grandes conglomerados urbanos presenta amplios desafíos. Desde la perspectiva del personal sanitario, se observan coyunturas que requieren la adecuación de ciertas estrategias interventoras para dar una respuesta de manera integrada.
Introduction: Tuberculosis (TB) persists as an important public health problem in Argentina with a worrying concentration in large urban centers. The objective of this study is to recover the meanings and practices of professionals from a public network of health services in a large urban conglomerate on the TB care-care process. Methods: An exploratory study with a qualitative approach was carried out, based on semi-structured interviews with members of the health teams of a hospital and health centers of the CABA. Results: It was identified that, from the perspective of the health teams, there are different nuances of meaning about the complexity of the TB approach. These varied according to the characteristics of the services in which they were inserted and of the people with TB. Strategies for dealing with complex cases were described: having interdisciplinary teams, acting together with other health effectors and dialoguing with civil society organizations under a territorial approach. Conclusion: The control of the TB problem in large urban conglomerates presents extensive challenges. From the perspective of health teams, complex situations are observed that require the development of certain strategies to address them. These allow the adaptation of interventions to provide an integrated response.
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OBJECTIVE: To identify the association between non-adherence to tuberculosis treatment and access to treatment. METHODS: A cross-sectional study was carried out in the Metropolitan Area of Buenos Aires, Argentina. One hundred twenty three patients notified in 2007 (38 non adherent and 85 adherents) were interviewed regarding the health care process and socio-demographic characteristics. Factors associated to non-adherence were assessed through logistic regression analysis. RESULTS: An increased risk of non-adherence with to treatment was found in male patients (OR = 2.8; 95%CI 1.2 - 6.7), patients who had medical check-ups at hospitals (OR = 3.4; 95%CI 1.1 - 10.0) and those who had difficulties with transportation costs (OR = 2.5; 95%CI 1.1 - 5.9). CONCLUSION: Risk of non-adherence increases as a result of economic barriers in accessing health care facilities. Decentralization of treatment to primary health care centers and social protection measures for patients should be considered as priorities for disease control strategies in order to lessen the impact of those barriers on adherence to treatment.
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Tuberculosis , Adolescente , Adulto , Anciano , Argentina/epidemiología , Estudios Transversales , Femenino , Humanos , Masculino , Cumplimiento de la Medicación , Persona de Mediana Edad , Prevalencia , Atención Primaria de Salud , Factores Socioeconómicos , Tuberculosis/epidemiología , Tuberculosis/terapia , Adulto JovenRESUMEN
Resumen Objetivo: Identificar el lugar que ocupa la sífilis congénita en la agenda de salud y analizar el proceso de determinación social y los determinantes que, en distintos niveles, influyen para que este tema avance (o no) hacia una agenda de decisión, desde un enfoque del derecho a la salud. Métodos: Estudio cualitativo exploratorio, descriptivo y transversal, basado en datos primarios (entrevistas semi-estructuradas a actores involucrados en la temática del nivel global, regional y local) y secundarios. Se elaboró un modelo para analizar la agenda de salud internacional y la posición que ocupa un tema, en este caso sífilis congénita. Resultados: Determinantes sociales en distintos niveles, vinculados a la política exterior, comercio, ciencia/innovación tecnológica y los sistemas de producción, dificultan el avance de la sífilis congénita desde una agenda formal a una agenda de decisión, sumado a la ausencia de grupos de presión y un bajo grado de visibilidad de la enfermedad como problema. Conclusiones: La sífilis congénita persiste como problema de salud pública. En muchos países de la región no logra pasar a una agenda de decisión, dificultando su efectivo control. El modelo elaborado y los determinantes sociales identificados en sus distintos niveles constituyen un aporte en esta dirección.
Abstract Objective: To identify the place of congenital syphilis on the health agenda and analyze the process of social determination and social determinants having an influence, at different levels, on the health policy agenda setting, from a right to health perspective. Methods: Qualitative exploratory, descriptive and transversal study, based on primary data (semi-structured interviews with those involved in the subject at the global, regional and local level) as well as secondary data. A model was developed to analyze the health agenda and the position that a topic occupies in it, in this case, congenital syphilis. Results: Social determinants, at different levels, linked to foreign policy, trade, science / technological innovation and production systems, hinder the advance of congenital syphilis from a formal agenda to a decision agenda. This process is also influenced by the absence of pressure groups and a low visibility of the disease as a public health problem. Conclusions: Congenital syphilis persists as a public health problem, and in many countries of the region, this issue does not move up to a decision agenda, which hinders its effective control. The elaborated model and the social determinants identified at its different levels constitute a contribution in this direction.
Resumo Objetivo: Identificar o lugar que a sífilis congênita ocupa na agenda da saúde e analisar o processo de determinação social e os determinantes que, em diferentes níveis, influenciam esta questão para avançar (ou não) em uma agenda de decisão a partir de uma abordagem do direito à saúde. Métodos: Estudo qualitativo exploratório, descritivo e transversal, com base em dados primários (entrevistas semiestruturadas com atores envolvidos com o tema em nível global, regional e local) e dados secundários. Foi desenvolvido um modelo para analisar a agenda internacional de saúde e a posição de um problema, neste caso a sífilis congênita. Resultados: Determinantes sociais em diferentes níveis, vinculados a política externa, comércio, ciência / inovação tecnológica e sistemas de produção dificultam o avanço da sífilis congênita de uma agenda formal para uma agenda de decisão, somada a ausência de grupos de pressão e baixa visibilidade da doença como problema. Conclusões: A sífilis congênita persiste como problema de saúde pública. Em muitos países da região, não é possível avançar para uma agenda de decisões, o que dificulta seu controle eficaz. O modelo elaborado e os determinantes sociais identificados em seus diferentes níveis são uma contribuição nessa direção.
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Humanos , Masculino , Femenino , Sífilis Congénita , Salud Global , Enfermedades Desatendidas , Derecho a la Salud , Política de Salud , ArgentinaRESUMEN
This study aimed to identify the individual and environmental determinants of nonadherence to tuberculosis (TB) treatment in selected districts in the Buenos Aires Metropolitan Area, in Argentina. We conducted a cross-sectional study using a hierarchical model. Using primary and secondary data, logistic regression was performed to analyze two types of determinants. The likelihood of nonadherence to treatment was greatest among male patients. The following factors led to a greater likelihood of nonadherence to treatment: patients living in a home without running water; head of household without medical insurance; need to use more than one means of transport to reach the health center; place of residence in an area with a high proportion of households connected to the natural gas network; place of residence in an area where a large proportion of families fall below the minimum threshold of subsistence capacity; place of residence in an area where a high proportion of households do not have flushing toilets and basic sanitation. Our results show that social and economic factors - related to both individual and environmental characteristics - influence adherence to TB treatment.
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Cumplimiento de la Medicación/estadística & datos numéricos , Tuberculosis/tratamiento farmacológico , Adulto , Argentina , Estudios Transversales , Femenino , Humanos , Masculino , Cooperación del Paciente , Características de la Residencia , Factores de Riesgo , Factores Sexuales , Factores Socioeconómicos , Población UrbanaRESUMEN
PURPOSE: The objective of our study was to evaluate the reproductive outcome of male cancer survivors treated with intracytoplasmic sperm injection (ICSI) using cryopreserved sperm and compare it with the same treatment in non-cancer males. METHODS: We retrospectively analyzed database derived from cancer and non-cancer patients undergoing sperm cryopreservation from August 2008 to August 2012 at a university-based center. We evaluated the reproductive outcome of those cancer and non-cancer patients that had frozen sperm and returned subsequently to the clinic for assisted reproduction. RESULTS: We studied 272 males with cancer and 296 infertile males. The most prevalent types of cancer in our cohort were lymphoma (25.3 %), testicular cancer (19.2 %), leukemia (7.3 %), and other malignancies including sarcoma, gastrointestinal, and central nervous system malignancies (48.2 %). The use rate of cryopreserved sperm was 10.7 % for cancer patients and 30.7 % for non-cancer patients. The mean age of males with cancer who returned to the clinic for fertility treatment was 36.7 ± 6 years, and the diagnoses were testis cancer (43.4 %), lymphoma (36.9 %), leukemia (13 %), and other malignancies (6.7 %). Live birth rate of the cancer cohort was 62.1 %, which was higher than that of the normospermic non-cancer population (p < 0.0047). CONCLUSIONS: The use rate of cryopreserved sperm from oncofertility preservation cases is at around 10 %. The live birth rate using assisted reproductive technologies among these patients is at least comparable to that of the non-cancer population. IMPLICATIONS FOR CANCER SURVIVORS: To our knowledge, this was the first comparative study of male cancer survivors treated with ICSI using cryopreserved sperm, which were compared to non-cancer males undergoing the same treatment. Male fertility preservation is a highly valued service that should be strongly encouraged prior to beginning cytotoxic cancer treatment. These results can help healthcare professionals in oncology to improve the quality of counseling on fertility preservation when managing young men with newly diagnosed cancer that require gonadotoxic treatment.
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Preservación de la Fertilidad/estadística & datos numéricos , Neoplasias/rehabilitación , Sobrevivientes , Adulto , Criopreservación/estadística & datos numéricos , Femenino , Humanos , Infertilidad Masculina/rehabilitación , Masculino , Persona de Mediana Edad , Neoplasias/mortalidad , Embarazo , Estudios Retrospectivos , Preservación de Semen/estadística & datos numéricos , Inyecciones de Esperma Intracitoplasmáticas , Resultado del Tratamiento , Adulto JovenRESUMEN
OBJECTIVE Identify spatial distribution patterns of the proportion of nonadherence to tuberculosis treatment and its associated factors. METHODS We conducted an ecological study based on secondary and primary data from municipalities of the metropolitan area of Buenos Aires, Argentina. An exploratory analysis of the characteristics of the area and the distributions of the cases included in the sample (proportion of nonadherence) was also carried out along with a multifactor analysis by linear regression. The variables related to the characteristics of the population, residences and families were analyzed. RESULTS Areas with higher proportion of the population without social security benefits (p = 0.007) and of households with unsatisfied basic needs had a higher risk of nonadherence (p = 0.032). In addition, the proportion of nonadherence was higher in areas with the highest proportion of households with no public transportation within 300 meters (p = 0.070). CONCLUSIONS We found a risk area for the nonadherence to treatment characterized by a population living in poverty, with precarious jobs and difficult access to public transportation.
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Pacientes Desistentes del Tratamiento/estadística & datos numéricos , Tuberculosis/tratamiento farmacológico , Adolescente , Adulto , Argentina/epidemiología , Accesibilidad a los Servicios de Salud , Humanos , Persona de Mediana Edad , Análisis Espacial , Transportes/estadística & datos numéricos , Población Urbana , Adulto JovenRESUMEN
Low and controlled concentrations of nitric oxide play an important role in sperm physiology. Nitric oxide is produced by spermatozoa and acts as an intracellular signaling molecule in the processes of capacitation and acrosome reaction. It has been documented that during capacitation, nitric oxide interacts with the cAMP-protein kinase A pathway and also is involved in tyrosine nitration of sperm proteins. On the other hand, during the acrosome reaction, two different pathways have been postulated for nitric oxide to exert its effects. During the progesterone-induced acrosome reaction, nitric oxide stimulates a heme-containing enzyme, named cyclooxygenase with a subsequent increase in prostaglandin E(2). Furthermore, the acrosome reaction inducing effect of NO-releasing compounds occurs via an increase in cGMP levels and protein kinase G activation. Taken together, these data support a role for nitric oxide in sperm function. This review focuses on providing new evidence for the physiological role of nitric oxide (NO) on sperm function. We will first present a brief description on nitric oxide chemistry and on the events leading to sperm fertilizing ability followed by the observations obtained on the participation of NO on fertilization.
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Óxido Nítrico/metabolismo , Transducción de Señal/fisiología , Espermatozoides/fisiología , Animales , Fertilización/fisiología , Humanos , Masculino , Espermatozoides/metabolismoRESUMEN
ABSTRACT: Background: In Argentina, approximately 9,000 new cases of tuberculosis (TB) are recorded every year, representing an incidence rate of 22 cases per 100,000 inhabitants. There are no reported studies in Argentina examining the factors that influence the unequal distribution of the disease. The aim of the study was to identify the relationship between the distribution of social and economic factors and TB in Argentina between 2008 and 2012. Method: An ecologic study involving 525 departmental jurisdictions was conducted. Simple linear regression analysis was performed, followed by multiple linear regression for each group of determinants. A final model of determinants of TB's incidence was constructed from a model of multiple linear regression. Results: The following determinants explain 43% of the variability of TB's incidence rate among different jurisdictions: overcrowding, proportion of households with a sewage network, proportion of examined patients with respiratory symptoms and proportion of patients who discontinued treatment. Discussion: This study makes an important contribution to a better understanding of the factors influencing the TB occurrence in Argentina, which is the result of a multidimensional and complex process. Thesefactors make part of this disease's social determination. Conclusion: TB incidence is associated with different determinants, from multiple levels. Inequalities in its distribution in Argentina are driven by the unequal distribution of key social determinants.
RESUMO: Introdução: Aproximadamente 9 mil novos casos de tuberculose (TB) por ano são registrados na Argentina, representando uma taxa de incidência de 22 casos por 100 mil habitantes. Não há estudos publicados que avaliaram os fatores que influenciam a distribuição desigual da doença na Argentina. O objetivo deste trabalho foi identificar a relação entre a distribuição dos fatores sociais e econômicos e da tuberculose na Argentina entre 2008 e 2012. Método: Foi realizado um estudo ecológico envolvendo 525 departamentos. Na análise procedeu-se uma regressão linear simples, seguida de regressão linear múltipla para cada grupo de determinantes. Um modelo final com os determinantes da incidência de TB foi construído por meio de regressão linear múltipla. Resultados: Os seguintes determinantes explicam 43% da variabilidade da taxa de incidência de TB entre diferentes jurisdições: aglomeração intradomiciliar, proporção de domicílios com rede de esgoto, proporção de pacientes examinados com sintomas respiratórios e proporção de pacientes com tratamento descontinuado. Discussão: Este estudo contribui de maneira importante para uma melhor compreensão dos fatores que influenciam a ocorrência da TB na Argentina, resultado de um processo multidimensional e complexo. Esses fatores fazem parte da determinação social dessa doença. Conclusão: A incidência de TB está associada a diferentes determinantes, de múltiplos níveis. A heterogeneidade na distribuição da tuberculose na Argentina deve-se, entre outros fatores, pela distribuição desigual de determinantes sociais e de acesso às ações de saúde.
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Humanos , Tuberculosis Pulmonar/epidemiología , Argentina/epidemiología , Factores Socioeconómicos , Características de la Residencia , Incidencia , Factores de RiesgoRESUMEN
El objetivo de este artículo es doble. En primer lugar,investigar el creciente interés en la salud como una dimensión importante de la política exterior, en sintonía con el surgimiento de un nuevo marcopara la integración regional y la diplomacia en salud. En segundo lugar, comprender el papel y las prácticas de los nuevos bloques regionales en el campo de la salud y si estasconducena la emergencia de nuevas estrategias para abordar las políticas sanitarias regionales en América del Sur. Los nuevos procesos de integración regional se refieren a la salud como un derecho. Así, algunas prácticas y procesos de la política regional están estableciendo nuevos patrones de cohesión política y social en el avancede un nuevo regionalismo. La salud en este proceso de formulación e implementación de la política regional,atraviesa las agendas nacionales, regionales y globales de forma multidireccional. Un valor agregado de Unasur es su propuesta de avanzar es pos de una mayor soberanía regional en salud, a pesar del hecho de que los países miembros mantienen su autonomía nacional. En este sentido, Unasur ha proyectado una política exterior que promueve principios y valores a partir de un enfoque innovador. El caso de Unasur muestra que los organismos regionales tienen el potencial para cambiar las reglas (y el resultado) del juego en la diplomacia global y convertirse en actores influyentes en la agenda internacional.
Asunto(s)
Salud Global , Diplomacia en la Salud , Política de Salud , Actos Internacionales , Cooperación InternacionalRESUMEN
bjetivo: identificar los determinantes sociales de la mortalidad infantil, según el criterio de reducibilidad, en tres niveles de determinación (individual, familiar y poblacional).Métodos: se realizó un estudio transversal para el análisis de las características de la mortalidad infantil en partidos y departamentos de la República Argentina, y de los determinantes sociales de la mortalidad infantil, en tres niveles de análisis. Para el primero y el segundo nivel, se utilizaron variables relacionadas con los fallecidos que están disponibles en los informes estadísticos de defunción. Para el tercer nivel se utilizaron los datos poblacionales provenientes del Censo Nacional de Población y Viviendas del 2010.Resultados: de los determinantes sociales de la salud considerados, las variables que presentaron asociación estadísticamente significativa con la mortalidad infantil por causas reducibles fueron: edad del fallecido al momento de la muerte, la edad gestacional, lugar de ocurrencia de la muerte, haber tenido atención o no, el nivel de instrucción de la madre, la situación laboral, primaria incompleta y hacinamiento.Conclusión: existe una influencia de factores tanto del nivel individual, como del nivel familiar y poblacional sobre la mortalidad infantil y en mayor proporción sobre las muertes por causas reducibles.
he objective of this project is to identify the social determinants of infant mortality according to the criteria of reducibility and to investigate the association between the infant mortality and its determinants on multiple levels.Methods: A cross-sectional study analyzed the characteristics of infant mortality in parties and departments of Argentina and the social determinants of infant mortality in three levels of analysis.Results: The variables that showed a statistically significant association with infant mortality due to avoidable causes were: age of the deceased at the time of death, gestational age, place of occurrence of death, having attention or not, the level of instruction of the mother, employment status, overcrowding, and incomplete primary care.Conclusions: The factors that influence infant mortality exists as much at an individual level as they do at the family and population levels, and a large proportion of deaths are from preventable causes.