Salmonella Gallinarum and Salmonella Enteritidis are genetically closely related however associated with different pathologies. Several studies have suggested that S. Gallinarum is less invasive in vitro than S. Enteritidis. In this study we confirm that the S. Gallinarum strains tested were much less invasive than the S. Enteritidis strains tested in cells of avian or human origin. In addition...

Validation of a PCR test to detect hilA gene sequences of Salmonella spp. was performed in blood and faeces samples from typhoid fever and salmonellosis patients. Sensitivity (S), specificity (SP), positive predictive value (PPV) and negative predictive value (NPV) of the PCR in blood samples were performed by testing: 37 patients with clinical diagnosis of typhoid fever, 34 of them confirmed b...

False smut caused by Cercospora seminalis is an important disease of buffalograss (Buchloë dactyloides) affecting seed production. The pathogen prevents normal caryopsis development and causes considerable yield loss and reduced seed germination. The current taxonomic placement of the false-smut causal pathogen in the genus Cercospora is incorrect based on its morphological characteristics and ...

Salmonella pathogenicity island 1 (SPI1), comprising a type III section system that translocates effector proteins into host cells, is essential for the enteric pathogen Salmonella to penetrate the intestinal epithelium and subsequently to cause disease. Using random transposon mutagenesis, we found that a Tn10 disruption in the flagellar fliDST operon induced SPI1 expression when the strain wa...

Infections due to seafood associated Salmonella serovars are a great risk to public health. It is known that genes involved in pathogenesis of Salmonella spp. are clustered within Salmonella pathogenicity islands. Therefore, this study was aimed at detecting the prevalence of 12 different virulence associated genes coded by 4 pathogenicity islands, namely, SPI-1, SPI-2, SPI-3 and SPI-5, among 3...

Upon contact with intestinal epithelial cells, Salmonella enterica serovar Typhimurium injects a set of effector proteins into the host cell cytoplasm via the Salmonella pathogenicity island 1 (SPI1) type III secretion system (T3SS) to induce inflammatory diarrhea and bacterial uptake. The master SPI1 regulatory gene hilA is controlled directly by three AraC-like regulators: HilD, HilC, and Rts...

A 30-year-old man with no significant history presented in the emergency department in 2007 with loss of vision. A campimetric defect indicative of optic neuritis was confirmed. In view of these findings, corticosteroid treatment (1 g/day for 5 days) was administered, and magnetic resonance imaging (MRI) of the head was performed. No radiological studies of the chest were performed during this ...

Partial anomalous pulmonary venous connection (PAPVC) encompasses a group of cardiovascular anomalies that are caused by the abnormal return of one or more of the pulmonary veins directly to the right atrium or indirectly through a variety of venous connections from the anomalous pulmonary veins.1,2 We present the case of a 51-year-old man, a former smoker, with a history of hypertension, diabe...

Partial anomalous pulmonary venous connection (PAPVC) encompasses a group of cardiovascular anomalies that are caused by the abnormal return of one or more of the pulmonary veins directly to the right atrium or indirectly through a variety of venous connections from the anomalous pulmonary veins.1,2 We present the case of a 51-year-old man, a former smoker, with a history of hypertension, diabe...