Results: 723

The ERBB2 gene polymorphisms rs2643194, rs2934971, and rs1058808 are associated with increased risk of gastric cancer

Braz. j. med. biol. res; 52 (5), 2019
Gastric cancer (GC) is the third most lethal type of cancer worldwide. Single nucleotide polymorphisms (SNPs) in regulatory sites or coding regions can modify the expression of genes involved in gastric carcinogenesis, as ERBB2, which encodes for the tyrosine-kinase receptor HER-2. The aim of this work w...

CCAAT/enhancer-binding protein alpha (CEBPA) gene haploinsufficiency does not alter hematopoiesis or induce leukemia in Lck-CALM/AF10 transgenic mice

Braz. j. med. biol. res; 52 (6), 2019
Although rare, CALM/AF10 is a chromosomal rearrangement found in immature T-cell acute lymphoblastic leukemia (T-ALL), acute myeloid leukemia, and mixed phenotype acute leukemia of T/myeloid lineages with poor prognosis. Moreover, this translocation is detected in 50% of T-ALL patients with gamma/delta T...

Adipokine gene variability and plasma levels in patients with chronic periodontitis -a case-control study

Abstract: Specific variants in genes that encode adipokines and their mRNA and protein expression were previously studied in type 2 diabetes mellitus (T2DM) and obesity, and similar studies have been performed for chronic periodontitis (CP). The aim of this case-control study was to investigate the possi...

Evaluación de la resistencia de genotipos de tomate frente a aislados de Phytophthora infestans provenientes de Guatemala

Cienc. tecnol. salud; 6 (1), 2019
El oomicete Phytophthora infestans (Mont) DeBary es el patógeno responsable de causar la enfermedad denominada comúnmente como tizón tardío. Dicho patógeno afecta cultivos de importancia económica para el país, entre ellos el tomate, cultivo en el cual puede generar pérdidas totales en la producc...

Mycobacterium tuberculosis spoligotypes and drug-resistant characterization from Beira compared to genotypes circulating in Mozambique

Abstract INTRODUCTION Mozambique is one of three countries with high prevalence of tuberculosis (TB), TB/human immunodeficiency virus coinfection, and multidrug-resistant TB. We aimed to describe Mycobacterium tuberculosis spoligotypes circulating among drug resistant (DR) strains from Beira, Mozambiqu...

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...

A localized outbreak of Chikungunya virus in Salvador, Bahia, Brazil

Mem. Inst. Oswaldo Cruz; 114 (), 2019
A localized Chikungunya virus (CHIKV; East/Central/South African genotype) outbreak (50 cases, 70% laboratory-confirmed; attack rate: 5.3 confirmed cases/100 people) occurred in a Salvador, Brazil neighborhood, between Apr-Jun/2017. Highly clustered cases in space and time, mostly along a single street, ...

Liaisons dangereuses: cross-border gene flow and dispersal of insecticide resistance-associated genes in the mosquito Aedes aegypti from Brazil and French Guiana

Mem. Inst. Oswaldo Cruz; 114 (), 2019
BACKGROUND In recent years, South America has suffered the burden of continuous high impact outbreaks of dengue, chikungunya and Zika. Aedes aegypti is the main mosquito vector of these arboviruses and its control is the only solution to reduce transmission. OBJECTIVES In order to improve vector contr...

Frequency of Porphyromonas gingivalis fimA in smokers and nonsmokers after periodontal therapy

J. appl. oral sci; 27 (), 2019
Abstract Porphyromonas gingivalis is one of the most important Gram-negative anaerobe bacteria involved in the pathogenesis of periodontitis. P. gingivalis has an arsenal of specialized virulence factors that contribute to its pathogenicity. Among them, fimbriae play a role in the initial attachment and ...

Feeding preference of Spodoptera frugiperda on different sorghum genotypes

Arq. Inst. Biol; 86 (), 2019
The resistance of plants to pests is a feature of great importance for agriculture, as it reduces costs with insecticides and promotes increased yield resulting in higher profits. This work aimed to evaluate the feeding preference of the Spodoptera frugiperda caterpillar by different sorghum genotypes. T...