the aim of this study was to evaluate the antimicrobial activities of trachyspermum ammi, essential oil against different kinds of microorganisms by microtiter plate method. all 36 isolates of (12 klebsiella pneumoniae, 12 e.coli and 12 staphylococcus aureus) isolated from urine culture of hospitalized patients (amir al-momenin hospital, zabol, south-eastern iran) suffered from urinary tract in...

The virulence of a pathogen can vary strongly through time. While cyclical variation in virulence is regularly observed, directional shifts in virulence are less commonly observed and are typically associated with decreasing virulence of biological control agents through coevolution. It is increasingly appreciated, however, that spatial effects can lead to evolutionary trajectories that differ ...

Pseudomonas aeruginosa is an opportunistic pathogen known for its immune evasive abilities amongst others by degradation of a large variety of host proteins. Here we show that digestion of thrombin by P. aeruginosa elastase leads to the release of the C-terminal thrombin-derived peptide FYT21, which inhibits pro-inflammatory responses to several pathogen-associated molecular patterns in vitro a...

Rice is a staple food for more than half of the global population. production is, however, severely affected by biotic and abiotic stresses. Fertilisers pesticides are widely used in rice farming to maintain optimal yield prevent losses caused environmental stress. However, indiscriminate use agrochemicals has adverse effects on environment human health. Stress nutrient excess or deficiency an ...

AIMS To study the distribution and shifting trends of bacterial keratitis. METHODS The data of 2220 corneal isolates from 1 January 1989 to 31 December 1998 were reviewed retrospectively. RESULTS Positive culture was recovered in 490 isolates. Gram positive cocci and Gram negative bacilli represented 51% and 39.4%, respectively. Pseudomonas aeruginosa was the most common pathogen (32.2%). A...

Extracellular secretion of products is the major mechanism by which Gram-negative pathogens communicate with and intoxicate host cells. Vesicles released from the envelope of growing bacteria serve as secretory vehicles for proteins and lipids of Gram-negative bacteria. Vesicle production occurs in infected tissues and is influenced by environmental factors. Vesicles play roles in establishing ...

conclusions mp, flub and rsv are the principal contributors to ari in the hubei area, with mixed infections, typically of mp and flub, being the most common pathogens statistically significant between different age groups. background acute respiratory infection (ari) is one of the primary diseases that cause high morbidity and mortality to children especially in developing countries. ari can co...

In the context of global issues concerning pathogen contamination surface and ground waters, this pioneering study describes fabrication screen-printed carbon electrodes modified with polymers molecularly imprinted lipopolysaccharide in an attempt to detect endotoxins derived from specific Gram-negative bacteria. The biosensors detected lipopolysaccharides Pseudomonas Aeruginosa high specificit...