Salmonella

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Salmonella

[‚sal·mə′nel·ə]
(microbiology)
A genus of gram-negative, facultatively anaerobic bacteria belonging to the family Enterobacteriaceae that cause enteric infections with or without blood invasion. Most species are motile, utilize citrate, decarboxylate ornithine, form gas from glucose, and produce hydrogen sulfide. Salmonellae do not ferment lactose, produce indole, or split urea; the Voges-Proskauer reaction is negative.

Salmonella

 

a genus of nonsporogenous rod-shaped bacteria that are 1–7 μm long and approximately 0.3–0.7 μm wide. It includes gram-negative facultative aerobes, most of which are motile because they are peritrichous. Salmonella was named in honor of the American pathologist D. E. Salmon (1850–1914).

Salmonellas form round grayish white colonies on solid nutrient mediums and an opacity and sediment and sometimes a film when grown in broth. They ferment carbohydrates, including glucose, mannose, xylose, and dextrin, and alcohols, including inositol and dulcite; an acid and sometimes a gas are formed as well.

Salmonellas generally inhabit the intestine of animals and man. Most belong to pathogenic species that produce various antigens, including the thermolabile flagellate H antigen and the O and V antigens, which consist of carbohydrates. There are more than 20 species in the genus, with more than 1,200 serotypes that differ in antigenic structure and biochemical properties. Among salmonellas are the causative agents of typhoid fever and paratyphoid in humans and salmonelloses in humans and animals.

A. A. IMSHENETSKII

References in periodicals archive ?
Among the 68 collected Salmonella species, a total of 21 (31%) isolates were identified as Salmonella Typhimurium. Seven (33%) Salmonella Typhimurium strains were isolated from the general hospital and 14 (67%) from the pediatric hospital.
From the results, it can be concluded that the alkaloid Sambiloto at a dose of 3.78 mg/200 g body weight up to 11.4 mg/200 g body weight after infected with Salmonella typhimurium, causing a decrease in [CD4.sup.+] IFN[gamma] and towards normal levels.
Simmons, "Rapid disruption of epithelial barrier function by Salmonella typhimurium is associated with structural modification of intercellular junctions," Infection and Immunity, vol.
Aunque no se logro recuperar ninguna porcion del alimento implicado en el brote de ETA para su confirmacion, se lo pudo asociar epidemiologicamente con los aislamientos de Salmonella Typhimurium variante 5- identificados en las personas afectadas, pues se tuvo en cuenta la informacion sobre la ocurrencia del evento en el mismo tiempo, lugar y personas implicadas.
Salmonella Typhimurium invasion induces apoptosis in Ckicken Embryo Fibroblast.
We thank to I Dewa Made Sukrama, Associate Professor from Clinical Microbiology Department, Sanglah General Hospital, Bali, Indonesia for helping us in the preparation of Salmonella Typhimurium bacteria.
Salmonella Typhimurium was recovered from the intestinal content, spleen, liver and mesenteric lymph nodes from all five necropsied calves, additionally from the lungs of one calf.
We investigated zoonotic source attribution of Salmonella Typhimurium under an extensive phylogenomic framework by including a large collection of isolates from 3 major US laboratory surveillance and monitoring programs.
Multilocus sequence typing of Salmonella typhimurium reveals the presence of the highly invasive ST313 in Brazil.
In vitro antimicrobial activity was performed by determining MIC of compounds by broth micro dilution method (Wayn, 2012) against multidrug resistant (MDR) and normal strains viz., methicillin resistant Staphylococcus aureus (MRSA), Escherichia coli (MDR), Klebsiella species (MDR), Salmonella typhimurium (MDR), Pseudomonas aeruginosa (MDR), E.
Antimicrobial resistance and genotyping of Salmonella Typhimurium strains isolated from guinea pigs (cavia porcellus) from intensive production farms of the city of Lima, Peru
Among all these bacteria, Salmonella enterica serovar Typhi (Salmonella Typhi) and Salmonella enterica serovar Typhimurium (Salmonella Typhimurium) have been the most studied bacterial vectors in cancer treatment [12].