Results: 1341

Expansão da circulação do vírus Zika da África à América, 1947-2018: revisão da literatura

Epidemiol. serv. saúde; 28 (2), 2019
Objetivo: descrever as expansões temporal e geográfica da circulação do vírus Zika (ZIKV) em países e territórios, desde seu isolamento até 2018. Métodos: revisão não sistemática da literatura do período entre 1947 e 2018, utilizando a base MEDLINE e estimativas da Organização Mundial da ...

Caracterización de cepas clínicas y ambientales de Salmonella enterica subsp. enterica serovar Heidelberg aisladas en Chile

Rev. méd. Chile; 147 (1), 2019
Background: Salmonella Heidelberg (S. Heidelberg) causes gastroenteritis and sometimes bacteremia and endocarditis. In other countries, this serovar has multidrug resistance including extended-spectrum β-lactamases (ESBLs) and AmpC (β-lactamases (AmpC), associated with the blaCMY-2 gene. In Chi...

Bases moleculares da absorção de nutrientes, tamponamento e fluxos de fluídos no intestino médio de Musca domestica

O intestino dos insetos representa uma interface pouco protegida dos agentes externos. A identificação dos mecanismos moleculares envolvidos nos processos fisiológico-digestivos permite encontrar alvos potenciais para o controle de insetos. As moléculas envolvidas na absorção de nutrientes, tampona...

Chikungunya: educación y prevención como pilares fundamentales para enfermedad sin cura
Chikungunya: education and prevention as fundamental support for disease without cure

Chikungunya virus is an alphavirus, member of the Togaviridae family, first discovered in Africa in 1952. Since then it caused sporadic outbreaks in Africa and Asia, but since 2000, outbreaks had been more frequent, being identified in Europe, America and the Caribbean. Chikungunya virus can cause chr...

Host suitability of grain sorghum and sudangrass for Pratylenchus brachyurus

Arq. Inst. Biol; 86 (), 2019
Nowadays, the root-lesion nematode Pratylenchus brachyurus (Godfrey) is a major pest of soybean in Brazil, mainly in areas using double cropping with maize or cotton, which are suitable hosts for P. brachyurus. A great effort has been made to find cash crops for P. brachyurus management. Grain sorghum [S...

Occurrence of Mycoplasma hyopneumoniae in slaughter pigs from Southern Brazil

Mycoplasma hyopneumoniae is the causative agent of enzootic pneumonia (EP), a disease that is highly prevalent and globally distributed, causing significant economic losses to the swine industry. Disease progression is characterized by reduced feed conversion and the development of lung lesions. Consider...

Seroprevalence of feline immunodeficiency virus and feline leukemia virus in domestic cats of Fortaleza, Ceará

Feline Immunodeficiency Virus (FIV) and Feline Leukemia Virus (FeLV) are important etiologic agents of immunosuppressive diseases in felines. The objective of the present study was to determine the prevalence of these retroviruses in domestic cats in Fortaleza, Ceará and the epidemiological factors asso...

Seasonal variation of propolis from southern Brazil: phytochemical screening, antimicrobial activity, and effects on bovine mammary epithelial cells

Previous studies have reported on the phytotherapeutic potential of propolis from southern Brazil (Urupema, Santa Catarina State), in particular, its efficacy in the treatment of bovine mastitis. The present study evaluates the effect of seasonal variation on the chemical composition of propolis from sou...

Relationships between phagocytosis, mucoid phenotype, and genetic characteristics of Klebsiella pneumoniae clinical isolates

Abstract INTRODUCTION The relationships between phagocytosis, and mucoid phenotype, plasmid profile and virulence, and resistance genetic characteristics of Klebsiella pneumoniae clinical isolates were evaluated. METHODS Thirty isolates were used to determine the mucoid aspect. Four were selected for...

Salmonella Panama: genetic diversity of the isolates collected from human and non-human sources

Abstract INTRODUCTION Salmonella enterica serovar Panama belongs to the D1 serogroup and is frequently associated with nontyphoidal salmonellosis in humans. This study aimed to characterize isolates collected from Northeast Brazil by phenotypic and molecular methods. METHODS Forty four S. Panama strai...