Avaliação de marcadores sorológicos treponêmicos e não-treponêmicos em doadores inaptos para sífilis atendidos em um hemocentro brasileiro

RESUMOIntrodução: A sífilis é uma doença infecciosa sistêmica de evolução crônica, causada pela bactéria Treponema pallidum, que pode ser transmitida por transfusões de sangue. A avaliação dos marcadores sorológicos na triagem para sífilis em doadores de sangue é fundamental para confirmar se o sangue doado pode estar contaminado com T. pallidum ou se há descarte por reações inespecíficas.  O objetivo deste trabalho foi descrever os resultados obtidos em testes sorológicos não-treponêmicos e treponêmicos e o perfil sociodemográfico dos doadores de sangue em um hemocentro brasileiro. Métodos: A população foi composta por doadores de sangue atendidos em todas as unidades do Hemopa, que atenderam aos critérios do estudo. Houve análise dos resultados obtidos através do VDRL e ELISA e informações socioeconômicas sobre a população: sexo, idade, escolaridade e estado civil, obtidos a partir do registro de doadores. Resultados: Durante o período do estudo, houve 103.187 doações de sangue. Um total de 883 doadores foram considerados inaptos para sífilis no teste de triagem (0,86%) e 271 pessoas (30,69%) compareceram ao hemocentro para realização de testes confirmatórios: 50,6% homens; 49,4% mulheres; idade média de 34 anos. Mais da metade declarou ter ensino médio completo e a maioria (75,6%) relatou ser solteiro. Mais de 50% dos doadores apresentaram titulação menor que 1/16; 91,5% também apresentou reatividade em ELISA. 15 pessoas (5,5%) apresentaram outro resultado reagente além da sífilis. Conclusão: Houve mais de 90% de resultados concordantes entre teste treponêmico e não-treponêmico em nossa triagem laboratorial. Esses resultados podem auxiliar instituições na estratégia de triagem para sífilis em doadores de sangue.Palavras-chave: Sífilis; doadores de sangue; seleção do doador; testes laboratoriais; segurança do sangue; hemoterapi

Plasticidade fenotípica da mamoneira precoce sob diferentes arranjos espaciais em consórcio com feijão caupi

O arranjo espacial facilita o manejo e proporciona a eficiência da interceptação de luz pelas folhas, numa arquitetura da ramificação com ajuste ao índice de área foliar e incremento da rentabilidade da cultura. Objetivou-se com o presente trabalho, caracterizar o comportamento morfofisiológico da mamoneira cv. BRS Energia, consorciada com feijão caupi cv. Marataoã, sob diferentes arranjos espaciais. O experimento foi conduzido na Estação Experimental da Embrapa Algodão, em Missão Velha, CE, com adubação (55-40-20). O delineamento experimental foi o de blocos casualizados, em esquema fatorial 2³ x 3. A combinação dos fatores, dois espaçamentos entre as linhas (EL de 1,5 e 1,0 m) e entre as plantas de mamoneira (DM de 0,5 e 1,0 m) e duas densidades de feijão caupi (DC de 0,20 m, com duas, ou uma planta cova-1, a cada 0,20 m), constituiu os tratamentos primários, que foram distribuídos nas parcelas e os três tipos de ramificação (Ramo do racemo primário, do secundário e do terciário), distribuídos nas subparcelas, representaram o tratamento secundário. O crescimento da mamoneira se ajusta aos diferentes arranjos de espaçamentos compensados pela plasticidade morfológica da cultura, que apresenta ângulo de menor grau (54,30) nos ramos dos racemos primários e ângulos mais abertos para os ramos dos racemos secundários (62,17) e terciários (65,71). O EL e as DM e DC interagiram para a plasticidade da mamoneira em seu crescimento. O ângulo da ramificação aumenta com a ordem e a altura dos racemos na planta, influenciado pela densidade do cultivo

Diretriz da SBC sobre Diagnóstico e Tratamento de Pacientes com Cardiomiopatia da Doença de Chagas – 2023

Note: These guidelines are for information purposes and should not replace the clinical judgment of a physician, who must ultimately determine the appropriate treatment for each patient

Serological survey for Chagas disease in the rural areas of Manaus, Coari, and Tefé in the Western Brazilian Amazon

INTRODUCTION: Deforestation, uncontrolled forest, human population migration from endemic areas, and the large number of reservoirs and wild vectors naturally infected by Trypanosoma cruzi promote the endemicity of Chagas disease in the Amazon region. METHODS: We conducted an initial serological survey (ELISA) in a sample of 1,263 persons; 1,095 (86.7%) were natives of the State of Amazonas, 666 (52.7%) were male, and 948 (75.1%) were over 20 years old. Serum samples that were found to be reactive, indeterminate, or inconclusive by indirect immunofluorescence (IFI) or positive with low titer by IFA were tested by Western blot (WB). Serologically confirmed patients (WB) were evaluated in terms of epidemiological, clinical, ECG, and echocardiography characteristics. RESULTS: Fifteen patients had serologically confirmed T. cruzi infection, and 12 of them were autochthonous to the state of Amazonas, for an overall seroprevalence of 1.2% and 0.9% for the state of Amazonas. Five of the 15 cases were males, and the average age was 47 years old; most were farmers with low education. One patient who was not autochthonous, having originated from Alagoas, showed right bundle branch block, bundle branch block, and anterosuperior left ventricular systolic dysfunction with an ejection fraction of 54%. CONCLUSIONS: The results of this study ratify the importance of monitoring CD cases in Amazonia, particularly in the state of Amazonas

NEOTROPICAL ALIEN MAMMALS: a data set of occurrence and abundance of alien mammals in the Neotropics

Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal-central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and the 13 countries of Caribbean islands. Our data set also includes neotropical species (e.g., Callithrix sp., Myocastor coypus, Nasua nasua) considered alien in particular areas of Neotropics. The most numerous species in terms of records are from Bos sp. (n = 37,782), Sus scrofa (n = 6,730), and Canis familiaris (n = 10,084); 17 species were represented by only one record (e.g., Syncerus caffer, Cervus timorensis, Cervus unicolor, Canis latrans). Primates have the highest number of species in the data set (n = 20 species), partly because of uncertainties regarding taxonomic identification of the genera Callithrix, which includes the species Callithrix aurita, Callithrix flaviceps, Callithrix geoffroyi, Callithrix jacchus, Callithrix kuhlii, Callithrix penicillata, and their hybrids. This unique data set will be a valuable source of information on invasion risk assessments, biodiversity redistribution and conservation-related research. There are no copyright restrictions. Please cite this data paper when using the data in publications. We also request that researchers and teachers inform us on how they are using the data

NEOTROPICAL CARNIVORES: a data set on carnivore distribution in the Neotropics

Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non-detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non-governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peer-reviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non-detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio-temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other large-scale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data