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Showing 1 to 20 of 41 for “"Enteric bacteria"”.
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Molecular Studies of Restriction Genes in Enteric Bacteria
<p>Bacterial cells contain various restriction-modification (R-M) systems to protect themselves from incoming foreign DNA. Most bacteria have at least one such system. In this study, the restriction genes and the location of the genes on the chromosome were examined in three enteric bacteria. …
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Nitrogen regulation of theput operon in enteric bacteria
Enteric bacteria can grow on proline as the sole nitrogen and carbon source. Expression of the proline utilization (put) operon in Klebsiella aerogenes and Escherichia coli is responsive to nitrogen regulation, but Salmonella typhimurium can not activate put operon expression when growing in medium …
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Factors that affect horizontal gene transfer in enteric bacteria
… 60 years. AMR results from pathogenic strains of bacteria adapting to antimicrobial-containing environments through mutations or through horizontal gene transfer (HGT) of genetic material containing resistance genes. Conjugation machinery offers an efficient method for acquisition of AMR and …
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The Inhibitory Effects of Acetic Acid on Enteric Bacteria
… flora« The microbial flora of man consists of bacteria, fungi and viruses. The bacterial flora has been extensively studied due to the ease of isolation and its rapid growth. In the literature, mention of normal flora is interpreted as meaning the bacteria flora unless otherwise stated. Fungi …
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The role of enteric bacteria in the Abalone, Haliotis Midae
The role of bacteria in the digestive tract of the abalone Haliotis midae was examined to determine whether bacteria aid hydrolysis of polysaccharides present in seaweeds which farmed abalone consume. The enteric bacteria were enumerated using culturable and total (DAPI) counts. The numbers of …
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Prevalence of Enteric Bacteria Associated with Diarrhea in Children Less than Five Years of Age and Their Sensitivity to Antibiotics in Unguja Island- Zanzibar
The study aimed to determine the prevalence of enteric pathogenic bacteria associated with diarrhoea in children less than five years of age and their sensitivity to antibiotics in Unguja Island- Zanzibar. The prevalence of pathogenic enteric bacteria were isolated and indentified by convectional …
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American Alligator Fecal Coliform and Pathogen Identification, Genotypic Fingerprinting, and REP-PCR Bacterial Source Tracking in South Carolina
… identification, genotypic fingerprinting, and bacterial source tracking. The overall goals were to identify, fingerprint, and detect American alligator (<em>Alligator mississippiensis</em>) fecal coliform bacteria in surface waters, as alligators may be an unrecognized source of fecal pollution …
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Detection and Identification of Gastrointestinal Pathogens in Clinical Samples: Comparison Between two Laboratory Developed Multiplex Real-Time PCR Platforms
… gastroenteritis is caused by a wide range of enteric bacteria pathogens including <em>Salmonella, Shigella, Campylobacter jejuni, </em>and <em> E. coli </em>0157. Conventional methods used in the detection of such pathogens including, culture, microscopy, biochemical identification, and …
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Coliforms, Salmonella, and Shigella in the James River Basin
The enteric bacterial contamination in the James River Basin was assessed using routine monitoring methods and pathogen detection techniques. Samples were collected from 10 different locations, once per month for 6 months, and analyzed for fecal coliforms, E. coli and total phosphorous. The …
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REGULATION AND EXPRESSION OF AMYLOID CURLI IN SALMONELLA INFECTION
… to a new host. Most of the biomass of the enteric biofilm is a thick extracellular matrix composed of curli, cellulose, BapA, and extracellular DNA. Curli are functional amyloids with a rich β-sheet structure strikingly similar to pathological and immunomodulatory human amyloids such as …
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Probiotic effect of Vibrio midae SY9, Cryptococcus sp. SS1 and Debaryomyces hansenii AY1 on the growth and disease resistance of farmed Haliotis midae
… midae. Erasmus et al. (1997) showed that abalone enteric bacteria enhanced digestive efficiency by secreting polysaccharolytic enzymes and it was suggested from these results that these bacterial enzymes could affect the growth rate of abalone. Furthermore, an overwhelming body of evidence has …
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Transport of copiotrophic bacteria in oligotrophic coarse soils: a Monte Carlo analysis
… system drainfield is sufficient to remove most bacteria and viruses in most environments. Little is known of the transport of pathogenic, copiotrophic bacteria in coarse-grained soils below on-site drainfields placed in mountainous soil environments thought to be oligotrophic. A stochastic …
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Endogenous production and detoxification of a potent cytotoxin, nitric oxide, in Salmonella enterica serovar Typhimurium and Escherichia coli
Salmonella serovars are harmful enteric pathogens of economical and clinical importance that possess sophisticated strategies to rapidly adapt to various host (human and animal) and non-host (soil, water and industrial) environments. Nitrosative stress, in the form of RNS such as the potent …
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Biological wastes as plant growth substrate amendments
… of the research investigated the persistence of enteric bacteria in raw salad vegetables using model food poisoning isolates. In clinical investigations plants are sampled for bacterial contamination but no attempt is made to differentiate between epiphytes and endophytes. Results here indicate …
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Host-pathogen interactions in the innate immune response of the nematode Caenorhabditis elegans
… heightened tolerance to one pathogen, the enteric bacteria Salmonella Typhimurium, comes at the cost of increased susceptibility to another, the fatal fungal human pathogen Cryptococcus neoformans. We find that this susceptibility trade-off is mediated by the reciprocal activity of two …
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Mechanistic studies on chorismate mutase-prephenate dehydrogenase from E. coli
… biosynthesis of tyrosine in E. coli and other enteric bacteria. Chorismate mutase catalyzes the pericyclic rearrangement of chorismate to prephenate which is subsequently converted to (4-hydroxyphenyl)pyruvate through an oxidative decarboxylation reaction catalyzed by prephenate dehydrogenase. …
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Evolution of Enzymatic Activities in the OMPDC Suprafamily: Discovery, Design and Evolution of 3-Keto-L-Gulonate 6-Phosphate Decarboxylase
… the fermentative utilization of L-ascorbate by enteric bacteria such as E. coli K-12. KGPDC is a new member of the orotidine 5'-monophosphate decarboxylase (OMPDC) suprafamily, and its discovery expands the range of reactions catalyzed by members of the suprafamily beyond non-cofactor-assisted …
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Biochemical and molecular characterization of methyl-accepting chemotaxis proteins from Bacillus subtilis
Bacterial chemotaxis may be considered the archetype for the behavioral response by organisms to environmental stimuli. The movement of bacteria toward various chemical substances depends upon the ability of the organism to detect perturbations within the environment. A transmembrane signalling …
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Effector-driven actin reorganisation restricts Salmonella invasion.
A critical step in the pathogenesis of enteric bacteria such as Salmonella is entering the host cell. To achieve this, Salmonella inject effector proteins into the cytosol of the cell and manipulate the actin cytoskeleton, driving pathogen entry. Two of the delivered effectors, namely SopE and …
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Using Probiotics in Intensive Care with Special Reference to Lactobacillus plantarum 299 and 299v
… is disrupted in critically illness. Probiotic bacteria have the ability to counteract those effects on the microflora and the gut wall. Lactobacillus plantarum 299 and 299v has been shown to adhere to the intestinal mucosa throughout the gastrointestinal tract in healthy volunteers. L pl 299v …
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