RESUMO
Historical pesticide use in agriculture and trace metal accumulation have long term impact on soil, sediment, and water quality. This research quantifies legacy and current-use pesticides and trace metals, assessing their occurrence and toxicological implications on a watershed scale in the Sogamoso River basin, tributary of the Magdalena River in Colombia. Organochlorine pesticides (22), organophosphates (7), and azole fungicides (5), as well as trace metals cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb), and zinc (Zn) were analyzed in croplands and along the river. Toxic units (TU) and hazard quotients (HQ) were calculated to assess the mixture toxicity. Organochlorines were detected in 84% of soils, 100% of sediments, and 80% of water samples. Organophosphates were found in 100% of soil and sediment samples, as well as in 70% of water samples. Azole fungicides were present in 79% of soils, 60% of sediments, and in 10% of water samples. Total pesticide concentrations ranged from 214.2 to 8497.7 µg/kg in soils, 569.6-12768.2 µg/kg in sediments, and 0.2-4.1 µg/L in water. In addition, the use of partition coefficient (Kd) and organic carbon fraction (foc) allowed the distribution analysis for most of the pesticides in sediments, suspended particulate matter (SPM), and water systems, but not for soils. Concentrations of trace metals Cu, Zn, Pb, and Zn exceeded international quality guidelines for agricultural soils in 16% of the samples. Furthermore, Cu and Zn concentrations exceeded sediment quality guidelines in 50 and 90% of the samples, respectively. These findings demonstrate the broad distribution of complex mixtures of trace metals, legacy organochlorines, and current-use pesticides across the basin, indicating that conventional agriculture is a significant source of diffuse pollution. Sustainable agricultural practices are needed to mitigate adverse impacts on ecosystems and human health.
Assuntos
Fungicidas Industriais , Metais Pesados , Praguicidas , Oligoelementos , Humanos , Solo , Metais Pesados/análise , Praguicidas/análise , Ecossistema , Rios , Fungicidas Industriais/análise , Colômbia , Chumbo/análise , Monitoramento Ambiental , Oligoelementos/análise , Agricultura , Zinco/análise , Azóis/análise , Organofosfatos , Sedimentos Geológicos , Medição de Risco , ChinaRESUMO
The nitrogen isotopic composition (15 N/14 N ratio, or δ15 N) of enameloid-bound organic matter (δ15 NEB ) in shark teeth was recently developed to investigate the biogeochemistry and trophic structures (i.e., food webs) of the ancient ocean. Using δ15 NEB , we present the first nitrogen isotopic evidence for trophic differences between shark taxa from a single fossil locality. We analyze the teeth of four taxa (Meristodonoides, Ptychodus, Scapanorhynchus, and Squalicorax) from the Late Cretaceous (83-84 Ma) Trussells Creek site in Alabama, USA, and compare the N isotopic findings with predictions from tooth morphology, the traditional method for inferring shark paleo-diets. Our δ15 NEB data indicate two distinct trophic groups, with averages separated by 6.1 ± 2.1. The lower group consists of Meristodonoides and Ptychodus, and the higher group consists of Scapanorhynchus and Squalicorax (i.e., lamniforms). This δ15 NEB difference indicates a 1.5 ± 0.5 trophic-level separation between the two groups, a finding that is in line with paleontological predictions of a higher trophic level for these lamniforms over Meristodonoides and Ptychodus. However, the δ15 NEB of Meristodonoides is lower than suggested by tooth morphology, although consistent with mechanical tests suggesting that higher trophic-level bony fishes were not a major component of their diet. Further, δ15 NEB indicates that the two sampled lamniform taxa fed at similar trophic levels despite their different inferred tooth functions. These two findings suggest that tooth morphology alone may not always be a sufficient indicator of dietary niche. The large trophic separation revealed by the δ15 NEB offset leaves open the possibility that higher trophic-level lamniforms, such as those measured here, preyed upon smaller, lower trophic-level sharks like Meristodonoides.
Assuntos
Tubarões , Animais , Isótopos de Carbono/análise , Tubarões/anatomia & histologia , Golfo do México , Cadeia Alimentar , Isótopos de Nitrogênio/análiseRESUMO
BACKGROUND: Iron deficiency prevalence in infants is high. Therefore, iron supplementation has been recommended and specified as a program. This study aimed to determine the characteristics of the prescription of ferrous sulfate as a preventive therapy for iron deficiency anemia in young infants. METHODS: We conducted a descriptive cross-sectional study of clinical records of young infants with eight visits per year. We analyzed a total of 287 records. The prescription characteristics included five criteria prescription indication, age at prescription, dosage, periodicity, and time. These characteristics were scored as follows 1 point when it was considered adequate and 0 when it was considered inadequate; the minimum possible score was 0, and the maximum possible score was 5 points. Statistical analysis included percentages and 95% confidence intervals (CI). RESULTS: The prescription pattern of ferrous sulfate as preventive therapy in infants under one year of age was indicated in 100% of the records reviewed. All five criteria were met in 18.1% of the reviewed records (95%CI 13.6-22.6). The lowest compliance corresponded to adequate dosage (29.2%; 95%CI 23.9-34.5). Age at prescription was correct in 75.9% (95%CI 70.9-80.9); duration of prescription was correct in 44.2% (95%CI 38.4-50.0), and periodicity was proper in 31.1% (95%CI 25.9-36.7) of the files reviewed. CONCLUSIONS: Compliance with the prescription of ferrous sulfate as a preventive measure for anemia in infants was not as expected; interventions are needed to reverse this behavior.
INTRODUCCIÓN: Debido a que la prevalencia de deficiencia de hierro en el lactante es alta, el aporte de hierro se ha recomendado como suplemento y se ha concretado como programa. El objetivo del estudio fue determinar las características de la prescripción de sulfato ferroso como terapia de prevención de anemia ferropénica en el lactante menor. MÉTODOS: Se llevó a cabo un estudio descriptivo con diseño transversal de expedientes clínicos de lactantes menores con ocho consultas al año. Se analizaron 287 expedientes. Las características de prescripción incluyeron cinco criterios: indicación de prescripción, edad de indicación, dosificación, periodicidad y tiempo. Se calificó con 1 punto cuando la característica se consideró adecuada y con 0 cuando se consideró inadecuada; la puntuación mínima posible fue 0 y la puntuación máxima posible de 5 puntos. El análisis estadístico incluyó porcentajes e intervalos de confianza (IC) al 95%. RESULTADOS: El patrón de prescripción del sulfato ferroso como terapia preventiva en el menor de un año se encontró indicado en 100% de los expedientes revisados. Se cumplió exactamente con los cinco criterios en el 18.1% de los expedientes revisados (IC95% 13.6-22.6); el cumplimiento más bajo correspondió a la dosificación adecuada (29.2%; IC95% 23.9-34.5). La edad de inicio fue correcta en el 75.9% (IC95% 70.9-80.9); la duración de la prescripción fue correcta en el 44.2% (IC95% 38.4-50.0) y la periodicidad fue correcta en el 31.1% (IC95% 25.9-36.7) de los expedientes revisados. CONCLUSIONES: El cumplimiento de la prescripción de sulfato ferroso como medida preventiva de la anemia en lactantes no fue el esperado, por lo que se requiere adoptar intervenciones para revertir este comportamiento.
Assuntos
Anemia Ferropriva , Humanos , Anemia Ferropriva/tratamento farmacológico , Anemia Ferropriva/prevenção & controle , Estudos Transversais , Projetos de Pesquisa , PrescriçõesRESUMO
Abstract Background: Iron deficiency prevalence in infants is high. Therefore, iron supplementation has been recommended and specified as a program. This study aimed to determine the characteristics of the prescription of ferrous sulfate as a preventive therapy for iron deficiency anemia in young infants. Methods: We conducted a descriptive cross-sectional study of clinical records of young infants with eight visits per year. We analyzed a total of 287 records. The prescription characteristics included five criteria prescription indication, age at prescription, dosage, periodicity, and time. These characteristics were scored as follows 1 point when it was considered adequate and 0 when it was considered inadequate; the minimum possible score was 0, and the maximum possible score was 5 points. Statistical analysis included percentages and 95% confidence intervals (CI). Results: The prescription pattern of ferrous sulfate as preventive therapy in infants under one year of age was indicated in 100% of the records reviewed. All five criteria were met in 18.1% of the reviewed records (95%CI 13.6-22.6). The lowest compliance corresponded to adequate dosage (29.2%; 95%CI 23.9-34.5). Age at prescription was correct in 75.9% (95%CI 70.9-80.9); duration of prescription was correct in 44.2% (95%CI 38.4-50.0), and periodicity was proper in 31.1% (95%CI 25.9-36.7) of the files reviewed. Conclusions: Compliance with the prescription of ferrous sulfate as a preventive measure for anemia in infants was not as expected; interventions are needed to reverse this behavior.
Resumen Introducción: Debido a que la prevalencia de deficiencia de hierro en el lactante es alta, el aporte de hierro se ha recomendado como suplemento y se ha concretado como programa. El objetivo del estudio fue determinar las características de la prescripción de sulfato ferroso como terapia de prevención de anemia ferropénica en el lactante menor. Métodos: Se llevó a cabo un estudio descriptivo con diseño transversal de expedientes clínicos de lactantes menores con ocho consultas al año. Se analizaron 287 expedientes. Las características de prescripción incluyeron cinco criterios: indicación de prescripción, edad de indicación, dosificación, periodicidad y tiempo. Se calificó con 1 punto cuando la característica se consideró adecuada y con 0 cuando se consideró inadecuada; la puntuación mínima posible fue 0 y la puntuación máxima posible de 5 puntos. El análisis estadístico incluyó porcentajes e intervalos de confianza (IC) al 95%. Resultados: El patrón de prescripción del sulfato ferroso como terapia preventiva en el menor de un año se encontró indicado en 100% de los expedientes revisados. Se cumplió exactamente con los cinco criterios en el 18.1% de los expedientes revisados (IC95% 13.6-22.6); el cumplimiento más bajo correspondió a la dosificación adecuada (29.2%; IC95% 23.9-34.5). La edad de inicio fue correcta en el 75.9% (IC95% 70.9-80.9); la duración de la prescripción fue correcta en el 44.2% (IC95% 38.4-50.0) y la periodicidad fue correcta en el 31.1% (IC95% 25.9-36.7) de los expedientes revisados. Conclusiones: El cumplimiento de la prescripción de sulfato ferroso como medida preventiva de la anemia en lactantes no fue el esperado, por lo que se requiere adoptar intervenciones para revertir este comportamiento.
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Resumen Objetivo: Comparar las creencias de enfermedad y las creencias de medicación con la adherencia al tratamiento en pacientes con hipertensión arterial. Método: Diseño transversal comparativo en población hipertensa sin diabetes mellitus, grupo de 137 pacientes adherentes y grupo de 129 pacientes no adherentes. Se evaluaron las creencias de la enfermedad y las creencias de la medicación. El análisis estadístico incluyó prueba de ji al cuadrado, razón de momios e intervalo de confianza para razón de momios. Resultados: En el grupo de pacientes adherentes, el 71.5% tienen creencias adecuadas de la enfermedad, y en el grupo de pacientes no adherentes el 43.4% también tienen creencias adecuadas de la enfermedad (p = 0.000). Cuando se agrupan las creencias de la enfermedad y las creencias sobre la medicación existe una asociación con la adherencia al tratamiento en los pacientes hipertensos. Conclusiones: Existe asociación entre las creencias de la enfermedad y las creencias de la medicación con la adherencia al tratamiento antihipertensivo.
Abstract Objective: Compare disease beliefs and medication beliefs with adherence to treatment in patients with hypertension without diabetes mellitus. Method: Comparative transverse design in hypertensive population, a group of 137 adherent patients and a group of 129 non-adherent patients. The beliefs of the disease and beliefs about the medication were evaluated. The statistical analysis included chi squared, odds ratio and confidence interval for odds ratio. Results: In the group of adherent patients, 71.5% have an adequate belief of the disease and in the group of non-adherent patients, 43.4% also have an adequate belief of the disease (p = 0.000). When the belief of the disease and beliefs about the medication are grouped, there is an association with adherence to treatment in hypertensive patients. Conclusions: There is an association between beliefs about the disease and medication with adherence to antihypertensive treatment.
RESUMO
Objective: Compare disease beliefs and medication beliefs with adherence to treatment in patients with hypertension without diabetes mellitus. Method: Comparative transverse design in hypertensive population, a group of 137 adherent patients and a group of 129 non-adherent patients. The beliefs of the disease and beliefs about the medication were evaluated. The statistical analysis included chi squared, odds ratio and confidence interval for odds ratio. Results: In the group of adherent patients, 71.5% have an adequate belief of the disease and in the group of non-adherent patients, 43.4% also have an adequate belief of the disease (p = 0.000). When the belief of the disease and beliefs about the medication are grouped, there is an association with adherence to treatment in hypertensive patients. Conclusions: There is an association between beliefs about the disease and medication with adherence to antihypertensive treatment.
Objetivo: Comparar las creencias de enfermedad y las creencias de medicación con la adherencia al tratamiento en pacientes con hipertensión arterial. Método: Diseño transversal comparativo en población hipertensa sin diabetes mellitus, grupo de 137 pacientes adherentes y grupo de 129 pacientes no adherentes. Se evaluaron las creencias de la enfermedad y las creencias de la medicación. El análisis estadístico incluyó prueba de ji al cuadrado, razón de momios e intervalo de confianza para razón de momios. Resultados: En el grupo de pacientes adherentes, el 71.5% tienen creencias adecuadas de la enfermedad, y en el grupo de pacientes no adherentes el 43.4% también tienen creencias adecuadas de la enfermedad (p = 0.000). Cuando se agrupan las creencias de la enfermedad y las creencias sobre la medicación existe una asociación con la adherencia al tratamiento en los pacientes hipertensos. Conclusiones: Existe asociación entre las creencias de la enfermedad y las creencias de la medicación con la adherencia al tratamiento antihipertensivo.
Assuntos
Hipertensão , Adesão à Medicação , Anti-Hipertensivos/uso terapêutico , Pressão Sanguínea , Estudos Transversais , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Hipertensão/tratamento farmacológicoRESUMO
BACKGROUND: Growth and development reflect the child's health condition. Currently, child care is supported in daycare centers. In this context, this article aimed to identify the differences in growth and psychomotor development in children according to their attendance at daycare centers. METHODS: We conducted an analytical cross-sectional study in children aged 25 to 48 months. Two groups were identified: 68 children attended daycare, and 68 children did not attend daycare. Growth was assessed with weight-for-height curves, and psychomotor development was evaluated with the child developmental assessment instrument (psychosocial, language, psychomotor, and cognitive area). The X2 test was used for statistical analysis. RESULTS: The percentage of daycare children with ideal weight was higher than those not attending in daycare (p = 0.035). Psychomotor development was significantly higher in daycare children: in the psychosocial (p = 0.000), language (p = 0.000), motor (p = 0.000), and cognitive development (p = 0.000) areas. CONCLUSIONS: The psychomotor development of children attending daycare centers is superior to that of children not in daycare centers.
INTRODUCCIÓN: La salud del niño se puede evaluar a partir de su crecimiento y desarrollo. En la sociedad actual, el cuidado de los hijos se comparte con las guarderías infantiles. En este contexto, el objetivo del artículo fue identificar las diferencias de crecimiento y desarrollo psicomotor en niños de acuerdo con su asistencia a las guarderías. MÉTODOS: Se llevó a cabo un estudio transversal analítico en niños de 25 a 48 meses de edad. Se identificaron dos grupos: 68 niños atendidos en guarderías y 68 niños no atendidos en guarderías. El crecimiento se evaluó con las curvas de peso para la talla y el desarrollo psicomotor, con el instrumento de evaluación del desarrollo del niño (área psicosocial, lenguaje, psicomotriz, y cognitiva). Se utilizó la prueba de X2 para el análisis estadístico. RESULTADOS: El porcentaje de niños de guardería con peso ideal es superior al de los no atendidos en guardería (p = 0.035). El desarrollo psicomotor es significativamente mayor en los niños de guardería: en el área psicosocial (p = 0.000), en lenguaje (p = 0.000), en el área motriz (p = 0.000) y en desarrollo cognitivo (p = 0.000). CONCLUSIONES: El desarrollo psicomotor de los niños atendidos en guardería es superior al de los niños no atendidos en guardería.
Assuntos
Creches , Desenvolvimento Infantil , Criança , Estudos Transversais , HumanosRESUMO
Resumen Objetivo: Determinar la vida saludable perdida por hipertensión arterial sin diabetes mellitus. Método: La vida saludable perdida se determinó a partir de la discapacidad crónica (enfermedad renal crónica, cardiopatía y evento vascular cerebral), la discapacidad aguda (crisis hipertensiva y emergencia hipertensiva) y la muerte prematura. Se identificaron la edad del diagnóstico, la edad de la complicación, la prevalencia de la complicación, la duración del evento agudo, el número de eventos agudos, el tiempo vivido con hipertensión, la edad de la muerte y la esperanza de vida. En todos los casos se aplicó una tasa de descuento del 3%. La estimación se realizó por 100,000. Resultados: Cuando se utilizó como referencia el total de mujeres, la vida saludable perdida en ellas es de 198,498.28. Empleando como referencia el total de hombres, el valor para ellos es de 204,232.13. Si el referente es el total de la población, para las mujeres la vida saludable perdida es de 102,028.11 y para los hombres es de 99,256.98. Conclusiones: La vida sWaludable perdida por hipertensión arterial sin diabetes es diferente en hombres y mujeres; no obstante, tiene muchas aristas que deben abordarse.
Abstract Objective: To determine the disability adjusted life years in arterial hypertension without diabetes mellitus. Method: Disability adjusted life years was determined from chronic disability (chronic kidney disease, heart disease and cerebral vascular event), acute disability (hypertensive crisis and hypertensive emergency) and premature death. Age of diagnosis, age of the complication, prevalence of the complication, duration of the acute event, number of acute events, time lived with hypertension, age of death and life expectancy were identified. In all cases a 3% discount rate was applied, the estimate was made per 100,000. Results: When the total of women was used as a reference, the disability adjusted life years in women is 198,498.28. In men, using the total number of men as a reference, the value is 204,232.13. If the referent is the total population, in women the disability adjusted life years is 102,028.11 and in men 99,256.98. Conclusions: The disability adjusted life years in arterial hypertension without diabetes is different for men and women; the topic has many edges that must be studied.
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INTRODUCTION: Real-time reverse-transcription polymerase chain reaction (RT-PCR) is the gold standard for establishing the diagnosis of coronavirus disease 2019 (COVID-19). Chest computed tomography (CCT), as a diagnostic complement, classifies tomographic findings according to the COVID-19 Reporting and Data System (CO-RADS). OBJECTIVE: To determine CCT sensitivity and specificity for COVID-19 diagnosis. METHODS: We reviewed RT-PCR results, as well as their respective CCTs. All CCTs were classified according to CO-RADS. CCT sensitivity and specificity were evaluated using the RT-PCR result that was closest to that of CCT as reference. RESULTS: We included 412 patients, out of whom 277 were males (46-70 years) and 130 were females (45-71 years); with 181 negative and 231 positive tests, a sensitivity of 92.15% and specificity of 79.32% were obtained. Mortality increased after six hospitalization days, in males and in CO-RADS 4, 5 and 6 in comparison with CO-RADS 1, 2 and 3. CONCLUSIONS: Early diagnosis plays a decisive role in the prognosis of SARS-CoV-2-associated pneumonia. Although RT-PCR is current gold standard, false negatives are common; for this reason, CCT helps to confirm suspected cases, even at early stages. This imaging technique is an accessible and fundamental study for classification, diagnosis and prognosis.
INTRODUCCIÓN: La reacción en cadena de la polimerasa con transcripción inversa en tiempo real (RT-PCR) es el estándar de oro para establecer el diagnóstico de enfermedad por coronavirus 2019 (COVID-19). La tomografía computarizada de tórax (TCT), como complemento diagnóstico, clasifica los hallazgos tomográficos de acuerdo con el sistema CO-RADS (COVID-19 Reporting and Data System). OBJETIVO: Determinar la sensibilidad y especificidad de la TCT para el diagnóstico de COVID-19. MÉTODOS: Consultamos los resultados de RT-PCR, así como sus respectivas TCT. Todas las TCT se clasificaron de según CO-RADS. Se evaluó sensibilidad y especificidad de la TCT utilizando el resultado de RT-PCR más cercano de TCT como referencia. RESULTADOS: Incluimos 412 pacientes, incluyendo 277 hombres (46-70 años) y 130 mujeres (45-71 años), con 181 pruebas negativas y 231 positivas; obteniendo sensibilidad del 92.15% y especificidad del 79.32%. La mortalidad aumentó después de seis días de hospitalización, en el sexo masculino y en CO-RADS 4, 5 y 6 en comparación con CO-RADS 1, 2 y 3. CONCLUSIONES: El diagnóstico temprano es decisivo en el pronóstico de la neumonía SARS CoV 2. Aunque la RT-PCR es el estándar de oro actual, los falsos negativos son frecuentes, por lo que la TCT ayuda a confirmar los casos sospechosos, incluso en etapas tempranas. Este estudio de imagen es un estudio accesible y fundamental para la clasificación, diagnóstico y pronóstico.
Assuntos
COVID-19 , SARS-CoV-2 , Teste para COVID-19 , Feminino , Humanos , Masculino , Radiografia , Centros de Cuidados de Saúde SecundáriosRESUMO
Objective: To determine the disability adjusted life years in arterial hypertension without diabetes mellitus. Method: Disability adjusted life years was determined from chronic disability (chronic kidney disease, heart disease and cerebral vascular event), acute disability (hypertensive crisis and hypertensive emergency) and premature death. Age of diagnosis, age of the complication, prevalence of the complication, duration of the acute event, number of acute events, time lived with hypertension, age of death and life expectancy were identified. In all cases a 3% discount rate was applied, the estimate was made per 100,000. Results: When the total of women was used as a reference, the disability adjusted life years in women is 198,498.28. In men, using the total number of men as a reference, the value is 204,232.13. If the referent is the total population, in women the disability adjusted life years is 102,028.11 and in men 99,256.98. Conclusions: The disability adjusted life years in arterial hypertension without diabetes is different for men and women; the topic has many edges that must be studied.
Objetivo: Determinar la vida saludable perdida por hipertensión arterial sin diabetes mellitus. Método: La vida saludable perdida se determinó a partir de la discapacidad crónica (enfermedad renal crónica, cardiopatía y evento vascular cerebral), la discapacidad aguda (crisis hipertensiva y emergencia hipertensiva) y la muerte prematura. Se identificaron la edad del diagnóstico, la edad de la complicación, la prevalencia de la complicación, la duración del evento agudo, el número de eventos agudos, el tiempo vivido con hipertensión, la edad de la muerte y la esperanza de vida. En todos los casos se aplicó una tasa de descuento del 3%. La estimación se realizó por 100,000. Resultados: Cuando se utilizó como referencia el total de mujeres, la vida saludable perdida en ellas es de 198,498.28. Empleando como referencia el total de hombres, el valor para ellos es de 204,232.13. Si el referente es el total de la población, para las mujeres la vida saludable perdida es de 102,028.11 y para los hombres es de 99,256.98. Conclusiones: La vida sWaludable perdida por hipertensión arterial sin diabetes es diferente en hombres y mujeres; no obstante, tiene muchas aristas que deben abordarse.
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Given the increased trend in substance use patterns among Latina adolescents in recent years, the need for research that identifies gender-specific and culturally relevant protective factors is essential in tailoring interventions. The current study examined the links between marianismo gender role attitudes, ethnic identity, and substance use abstinence among 277 low-income Mexican American early adolescent girls. Mental health was also examined as a potential moderator in these links. Results of linear regression analysis revealed that familismo, virtuous/chaste, and spiritual marianismo gender role attitudes were predictive of stronger ethnic identity; conversely, self-silencing marianismo attitudes were predictive of weaker ethnic identity. Second, results of hierarchical logistic regressions revealed that both virtuous/chaste marianismo gender role attitudes and mental health (low rates of psychological distress) were inversely linked with substance use; furthermore, they had a combined link that was related to even lower rates of substance use among participants. However, ethnic identity did not have a direct or moderating effect on substance use. Findings suggest that the promotion of positive components of marianismo and mental health may have a protective effect against early substance use in Mexican American early adolescent girls.
Assuntos
Identidade de Gênero , Saúde Mental , Americanos Mexicanos/psicologia , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Adolescente , Criança , Feminino , Humanos , Identificação Social , Inquéritos e QuestionáriosRESUMO
Chagas disease has a high incidence in Mexico and other Latin American countries. Because one of the most important known methods of prevention is vector control, which has been effective only in certain areas of South America, the development of a vaccine to protect people at risk has been proposed. In this study, we assessed the cellular and humoral immune response generated following immunization with pBCSP and pBCSSP4 plasmids containing the genes encoding a trans-sialidase protein (present in all three forms of T. cruzi) and an amastigote specific glycoprotein, respectively, in a canine model. Thirty-five beagle dogs were divided randomly into 5 groups (n=7) and were immunized twice intramuscularly with 500 µg of pBCSSP4, pBCSP, pBk-CMV (empty plasmid) or saline solution. Fifteen days after the last immunization the 4 groups were infected intraperitoneally with 500,000 metacyclic trypomastigotes. The fifth group was unimmunized/infected. The parasitaemia in the immunized/infected dogs was for a shorter period (14 vs. 29 days) and the parasite load was lower. The concentration of IgG1 (0.612±0.019 O.D.) and IgG2 (1.167±0.097 O.D.) subclasses was measured (absorbance) 15 days after the last immunization with both recombinant plasmids, the majority of which were IgG2. The treatment of parasites using the serum from dogs immunized with pBCSP and pBCSSP4 plasmids produced 54% (±11.8) and 68% (±21.4) complement-mediated lysis, respectively. At 12 h post immunization, an increase in cytokines was not observed; however, vaccination with pBCSSP4 significantly increased the levels of IFN-γ and IL-10 at 9 months post-infection. The recombinant plasmid immunization stimulated the spleen cell proliferation showing a positive stimulatory index above 2.0. In conclusion, immunization using both genes effectively induces a humoral and cellular immune response.
Assuntos
Doença de Chagas/prevenção & controle , DNA de Protozoário/imunologia , Imunidade Celular , Imunidade Humoral , Vacinas Protozoárias/imunologia , Trypanosoma cruzi/imunologia , Vacinas de DNA/imunologia , Animais , Anticorpos Antiprotozoários/sangue , Proliferação de Células , Doença de Chagas/parasitologia , Citocinas/sangue , DNA de Protozoário/administração & dosagem , Cães , Ensaio de Imunoadsorção Enzimática/veterinária , Fezes/parasitologia , Feminino , Técnica Indireta de Fluorescência para Anticorpo/veterinária , Glicoproteínas/genética , Glicoproteínas/metabolismo , Masculino , Neuraminidase/genética , Neuraminidase/metabolismo , Fagócitos/imunologia , Plasmídeos , Proteínas de Protozoários/genética , Proteínas de Protozoários/metabolismo , Vacinas Protozoárias/administração & dosagem , Urina/parasitologia , Vacinas de DNA/administração & dosagemRESUMO
BACKGROUND: Social representations are value systems. Social stereotypes are a social consensus of traits associated with a specific group. Stereotypes about older subjects, generally have negative connotations. AIM: To assess the prevalence of negative stereotypes towards older subjects among health care personnel. MATERIAL AND METHODS: A questionnaire about stereotypes towards old age, with Likert type questions that included health, social motivations and personality-character domains, was applied to 52 doctors, 12 residents, 80 general nurses, 36 auxiliary nurses, four social workers and 10 medical assistants, working at a general hospital. RESULTS: The mean age of the professionals who answered the questionnaire was 38 years (95% confidence intervals (CI) 37-39 years) and 78% were women. The prevalence of a Global negative stereotype was 65.0%(95% CI: 59.5-70.5). The figure for the health domain was 64.5% (IC95%; 59.0-70.0), for the social motivation domain was 60%(5%CI: 54.3-65.7) and for the character personality domain was 64% (95%CI: 58.4-69.6). CONCLUSIONS: There is a high prevalence of a negative stereotype towards old age among health care personnel.
Assuntos
Atitude do Pessoal de Saúde , Pessoal de Saúde/estatística & dados numéricos , Preconceito , Estereotipagem , Adulto , Estudos Transversais , Feminino , Pessoal de Saúde/psicologia , Hospitais Gerais , Humanos , Masculino , Motivação , Personalidade , Inquéritos e QuestionáriosRESUMO
Background: Social representations are value systems. Social stereotypes are a social consensus of traits associated with a specific group. Stereotypes about older subjects, generally have negative connotations. Aim: To assess the prevalence of negative stereotypes towards older subjects among health care personnel. Material and Methods: A questionnaire about stereotypes towards old age, with Likert type questions that included health, social motivations and personality-character domains, was applied to 52 doctors, 12 residents, 80 general nurses, 36 auxiliary nurses, four social workers and 10 medical assistants, working at a general hospital. Results: The mean age of the professionals who answered the questionnaire was 38 years (95 percent confidence intervals (CI) 37-39 years) and 78 percent were women. The prevalence of a Global negative stereotype was 65.0 percent(95 percent CI: 59.5-70.5). The figure for the health domain was 64.5 percent (IC95 percent; 59.0-70.0), for the social motivation domain was 60 percent(5 percentCI: 54.3-65.7) and for the character personality domain was 64 percent (95 percentCI: 58.4-69.6). Conclusions: There is a high prevalence of a negative stereotype towards old age among health care personnel.
Assuntos
Adulto , Feminino , Humanos , Masculino , Atitude do Pessoal de Saúde , Pessoal de Saúde/estatística & dados numéricos , Preconceito , Estereotipagem , Estudos Transversais , Pessoal de Saúde/psicologia , Hospitais Gerais , Motivação , Personalidade , Inquéritos e QuestionáriosRESUMO
OBJETIVO: Detectar anticuerpos circulantes contra seis infecciones transmisibles por sangre en donantes de una institución de seguridad social en Querétaro, México. MÉTODO: Se realizó un estudio transversal descriptivo retrospectivo con datos del Banco de Sangre del Hospital General Regional No. 1, del Instituto Mexicano del Seguro Social (IMSS). Se registraron 6 929 donantes, entre los cuales se identificó a los diagnosticados con cualquier anticuerpo circulante contra brucelosis, enfermedad de Chagas, hepatitis B, hepatitis C, sífilis y VIH. Los casos identificados con cualquiera de estas infecciones se analizaron según edad, género, estado civil, escolaridad, lugar de residencia y número de donaciones. Para estimar la prevalencia total se dividió el número de personas identificadas con cualquiera de los anticuerpos circulantes por el total de donantes, y luego por cada una de las diferentes infecciones. RESULTADOS: De los 6 929 donantes, 144 fueron detectados con algún tipo de anticuerpo circulante de las seis infecciones potencialmente transmisibles por sangre, lo cual da una prevalencia total de 2,07 por ciento (0-4,4). Las prevalencias más altas por tipo de anticuerpo circulante correspondieron a la hepatitis C, con 0,721 por ciento (IC 95 por ciento, 0,522-0,920), y a la enfermedad de Chagas, con 0,649 por ciento (IC 95 por ciento, 0,460-0,838). CONCLUSIÓN: La identificación de la prevalencia de donantes de sangre con anticuerpos circulantes de alguna de estas seis infecciones potencialmente transmisibles por vía sanguínea permite establecer un perfil epidemiológico propio del banco de sangre del Hospital General Regional No. 1. La enfermedad de Chagas se presenta como emergente, dando pauta a dirigir los esfuerzos para su control.
OBJECTIVE: To detect antibodies to six potentially blood-borne infections in blood donors at a social security institute in Querétaro, Mexico. METHODS: A cross-sectional, retrospective, descriptive study was performed using data from the blood bank records of the General Regional Hospital No. 1, Mexican Social Security Institute (IMSS). From the 6 929 registered donors, those with any antibody to brucellosis, Chagas' disease, hepatitis B, hepatitis C, syphilis, and HIV were identified. For the cases presenting any of these infections, the following demographics were analyzed: age, gender, marital status, education, home address, and number of donations made. To estimate overall prevalence, the number of donors with any of the antibodies was divided by the total donors, and then by each of the various infections. RESULTS: Of the 6 929 donors, 144 were detected with some type of circulating antibody of the six potentially blood-borne infections, with a total prevalence of 2.07 percent (0-4.4). The prevalence of blood donors with antibodies for hepatitis C was 0.721 percent (95 percentCI: 0.522-0.920) and Chagas' disease, 0.649 percent (95 percentCI: 0.460-0.838). CONCLUSIONS: Identifying the prevalence of blood donors with antibodies for any of these six, potentially blood-borne infections, allows the blood bank at the General Regional Hospital No. 1 to establish its own epidemiologic profiling. Chagas' disease proved to be emergent, calling for urgent control efforts.
Assuntos
Humanos , Masculino , Feminino , Adulto , Anticorpos/sangue , Doadores de Sangue , MéxicoRESUMO
OBJECTIVE: To detect antibodies to six potentially blood-borne infections in blood donors at a social security institute in Querétaro, Mexico. METHODS: A cross-sectional, retrospective, descriptive study was performed using data from the blood bank records of the General Regional Hospital No. 1, Mexican Social Security Institute (IMSS). From the 6 929 registered donors, those with any antibody to brucellosis, Chagas' disease, hepatitis B, hepatitis C, syphilis, and HIV were identified. For the cases presenting any of these infections, the following demographics were analyzed: age, gender, marital status, education, home address, and number of donations made. To estimate overall prevalence, the number of donors with any of the antibodies was divided by the total donors, and then by each of the various infections. RESULTS: Of the 6 929 donors, 144 were detected with some type of circulating antibody of the six potentially blood-borne infections, with a total prevalence of 2.07% (0-4.4). The prevalence of blood donors with antibodies for hepatitis C was 0.721% (95%CI: 0.522-0.920) and Chagas' disease, 0.649% (95%CI: 0.460-0.838). CONCLUSIONS: Identifying the prevalence of blood donors with antibodies for any of these six, potentially blood-borne infections, allows the blood bank at the General Regional Hospital No. 1 to establish its own epidemiologic profiling. Chagas' disease proved to be emergent, calling for urgent control efforts.
Assuntos
Anticorpos/sangue , Doadores de Sangue , Adulto , Feminino , Humanos , Masculino , MéxicoAssuntos
Bancos de Sangue , Brucelose , Hepatite , Doença de Chagas , HIV , Sífilis , México , Bancos de Sangue , Brucelose , Seleção do Doador , Doença de Chagas , HIV , Sífilis , Anticorpos , Doadores de SangueRESUMO
Estudio retrospectivo realizado en la Unidad de Pediatría del Hospital General de México, SSA, de 1979 a 1984, de pacientes ingresados con el diagnóstico de artritis séptica. Se estudiaron 40 casos entre los que predominaron los menores de dos años de edad; el límite de edad fue de 23 días a 15 años y el tiempo de evolución previo al diagnóstico varió de dos a 365 días. Los gérmenes indentificados en el cultivo del líquido sinovial fueron: S. aureus, Micrococus sp, E, coli, Klebisiella, Salmonella y Pseudomonas. El tratamiento antimicrobiano y quirúrgico simultáneo es el que ofrece menores posibilidades de complicaciones y/o secuelas
Assuntos
Recém-Nascido , Lactente , Pré-Escolar , Criança , Adolescente , Humanos , Artrite Infecciosa , Bactérias Gram-Positivas/isolamento & purificação , Líquido Sinovial/microbiologiaAssuntos
Nefropatias/fisiopatologia , Biópsia , Criança , Humanos , Rim/patologia , Testes de Função RenalRESUMO
Si bien las pruebas funcionales globales en el niño con patología renal, permiten una orientación evolutiva y terapéutica, los autores presentan 48 casos para demostrar las ventajas de los procedimientos selectivos y cuantitativos que están basados en la autonomía de los proceos parciales que integran la función del riñón. Para FG, CCPR y TM utilizan Inulina y p-amino hipurato de sodio. Además del TM de excreción efectúan las pruebas de acidez provocada, de concentración y recuento de sedimento. El material para el estudio histopatológico se obtiene dentro de los 8 días de realizado el clearance mediante punción biopsia transcutánea. Se efectúa además evaluaciones periódicas en 6 niños con el fin de estudiar las modalidades evolutivas de diversas nefropatías. Se hace un ensayo de sistematización teniendo en cuenta la independencia de los diferentes procesos que integran la función renal evaluada mediante los clearances selectivos. Es propósito esencial de la comunicación sostener que el estudio integral del nefrópata es racional y científicamente el medio más adecuado para su cabal comprención.