Results: 1341

Stress conditions in the host induce persister cells and influence biofilm formation by Staphylococcus epidermidis RP62A

Abstract INTRODUCTION: Studies have demonstrated that pathogens react to the harsh conditions in human tissues by inducing mechanisms that promote survival. METHODS: Persistence and biofilm-forming ability were evaluated during stress conditions that mimic those in the host. RESULTS: Carbon-source ava...

Prevalence of Neospora caninum and Toxoplasma gondii antibodies in dogs in the municipality of Poconé, state of Mato Grosso, Brazil

This study evaluated the presence of Neospora caninum and Toxoplasma gondii antibodies in 320 domestic dogs living in urban and rural areas of the municipality of Poconé, located in the Pantanal wetlands of the state of Mato Grosso, Brazil. Anti- N. caninum (cut-off point 50) and anti- T. gondii ...

Congenital abnormalities and arthrogryposis in newly born lambs in Al Muthanna province Iraq. Suspicion of Akabane virus infection

Akabane virus, a member of the Orthobunyavirus genus in the family Bunyaviridae, causes congenital abnormalities and arthrogryposis with hydrocephalus or hydroencephaly in ruminants. This study intends to describe the clinical signs, gross and histopathological features seen in 25 affected lambs in a...

A case of sporotrichosis caused by different Sporothrix brasiliensis strains: mycological, molecular, and virulence analyses

Mem. Inst. Oswaldo Cruz; 114 (), 2019
BACKGROUND Sporotrichosis is a subcutaneous mycosis caused by dimorphic pathogenic fungi belonging to the Sporothrix genus. Pathogenic Sporothrix species typically produce melanin, which is known to be a virulence factor. OBJECTIVES The aim of this study was to perform phenotypic, genotypic, and virule...

Isolation of Salmonella Typhimurium, Listeria monocytogenes and coagulase-positive Staphylococcus from salami sold at street fairs in Porto Alegre, Brazil

Arq. Inst. Biol; 86 (), 2019
Salami is a ready-to-eat (RTE) product frequently purchased at street fairs in Porto Alegre. Salmonella enterica, Listeria monocytogenes, and coagulase-positive Staphylococcus (CPS) are important causes of foodborne disease and can be transmitted through the consumption of RTE foods. The aim of this stud...

Combination of surveillance tools reveals that Yellow Fever virus can remain in the same Atlantic Forest area at least for three transmission seasons

Mem. Inst. Oswaldo Cruz; 114 (), 2019
BACKGROUND In Brazil, the Yellow Fever virus (YFV) is endemic in the Amazon, from where it eventually expands into epidemic waves. Coastal south-eastern (SE) Brazil, which has been a YFV-free region for eight decades, has reported a severe sylvatic outbreak since 2016. The virus spread from the north tow...

Pathogenicity of Metarhizium anisopliae and Beauveria bassiana fungi to Tetranychus ludeni (Acari: Tetranychidae)

Arq. Inst. Biol; 86 (), 2019
The use of acaricides is the main control method for Tetranychus ludeni (Acari: Tetranychidae) in horticultural crops. This mite has been recorded causing damage to sweet potato (Ipomoea batatas L.). The use of pathogenic fungi is an alternative to chemical control. The objective was to evaluate the path...

Bluetongue disease in sheep: a review

Arq. Inst. Biol; 86 (), 2019
The present review aims to show the main aspects related to bluetongue virus (BTV) infection in sheep. The bluetongue (BT) is a viral, infectious, and non-contagious disease caused by a virus (BTV) of the Orbivirus genus, transmited by a hematophagous vector of the Culicoides genus, to domestic and wild ...

Epidemiological profile of 39 cases of microcephaly caused by congenital infections diagnosed in the state of Rio Grande do Sul between 2015-2017

Clin. biomed. res; 39 (3), 2019
Introduction: Microcephaly is a clinical finding that can arise from congenital anomalies or emerge after childbirth. Maternal infections acquired during pregnancy can result in characteristic brain damage in the newborn (NB), which may be visible even in the fetal stage. To describe the epidemiological ...

Especies Crípticas Lutzomyia longipalpis (Diptera: Phlebotominae) y sus Implicaciones en la Transmisión de Leishmaniasis en Panamá

Rev. méd. Panamá; 39 (1), 2019
Lutzomyia longipalpis es el principal v ector de una importante enfermedad desatendida en América. La diversidad genética de este vector se estimó en la población colectada en dos áreas geográficas separadas por hasta 37 km. Analizamos la secuencia CB3­PDR / N1N­PDR de 22 individuos obte­ nie...