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Showing 1 to 20 of 87 for “"avium."”.
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Macrolide Resistance in Mycobacterium avium
Mycobacterium avium isolates resistant to clarithromycin and azithromycin have been recovered from patients undergoing antibiotic therapy. Comparison of DNA fingerprints of sensitive and resistant isolates showed that resistance resulted from mutation of the original, sensitive isolate in five of …
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Disinfectant Susceptibility of Mycobacterium avium
Mycobacterium avium, an opportunistic human pathogen, infects between 25 and 50% of advanced-stage acquired immuno-deficiency syndrome (AIDS) patients in the United States. M. avium has been isolated from many environmental sources including: natural waters, soils, and aerosols. M. avium has also …
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Biological Studies on Various Strains of Trypanosoma Avium
The purpose of this study was to further investigate avian trypanosomids, relative to the Magpie, Steller's Jay, and Sparrowhawk, and to initiate work for a newer aspect of trypanosome study; the effects of radiation upon trypanosome growth in vitro.
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Plasmid-influenced changes in Mycobacterium avium catalase activity
A virulent Mycobacterium avium strain, LR25, which carries 3 plasmids (18, 28, and 165 kb) and grows at 43°C was compared to its plasmid-free, avirulent segregant, strain LR163, to investigate the basis for the latter's inability to grow at 43°C. The failure of mid-log phase cultures of strain …
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Survival Of Mycobacterium Avium Subspecies Paratuberculosis In The Pol
Mycobacterium avium subspecies paratuberculosis (map) is an intracellular pathogen that is known to parasitize macrophages and monocytes. Map infiltrates gastrointestinal tract host tissue where it is the known etiological agent of johne's disease in ruminants and implicated in the etiology of …
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Proteomic analysis of the Mycobacterium avium-containing phagosome membrane
… tuberculosis] M.tb and Mycobacterium avium (M.av), reside intracellularly in phagosomes where they are able to survive, because they block the process of phagosome maturation. ... An approach of characterizing M.av-containing phagosomes in terms of cell surface-derived glycoconjugates, …
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Action of clofazimine on Mycobacterium avium and Mycobacterium intracellulare
… against a variety of mycobacteria including M. avium. The presence of clofazimine in growth medium resulted in higher carotenoid pigmentation in M. avium cells. Carotenoid pigments have been shown to quench superoxide radicals supporting the hypothesis that pigmentation possibly protected cells …
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Nitrate- and Nitrite-Reductase Activities in Mycobacterium Avium A5
Mycobacterium avium is human and animal opportunistic pathogen responsible for disseminated disease in immunocompromised patients. Mycobacteria have a capacity to adapt to the environmental conditions by inducing enzyme activities and altering their metabolism. M. avium A5 cells were grown in a …
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Epidemiology of <i>Mycobacterium avium</i> complex infecting AIDS patients
Organisms of the <i>Mycobacterium avium</i> complex cause disseminated infections in 25 to 50 % of patients with AIDS. To assess the likelihood of exposure to M avium, we attempted to recover M. avium complex from environmental samples in geographical areas (Boston, Massachusetts; Hanover, New …
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Development of Drug Loaded Nanoparticles for Treatment of Mycobacterium avium Infection
… of antimicrobial loaded nanoparticles against M. avium. Various in vitro efficacy studies were done with a) amikacin-loaded nanoparticles, b) clarithromycin-loaded nanoparticles, and c) with aerogel nanoparticles loaded with rifampicin, clarithromycin and ethambutol. Clarithromycin (CLA) and …
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Relationship of plasmids in Mycobacterium avium, Mycobacterium intracellulare, and Mycobacterium scrofulaceum
Bacteria of the <i>Mycobacterium avium, M. intracellulare, and M. scrofulaceum</i> group (MAIS) are opportunistic human pathogens and widespread in the environment. The first objective of this study was to demonstrate that plasmids from clinical isolates are closely related to plasmids from …
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Autoecología del cerezo de monte (Prunus Avium L.) en Castilla y León
El cerezo de monte (Prunus avium L.) es un árbol que aparece como especie secundaria en numerosos bosques de las montañas que bordean Castilla y León. Su madera es la más apreciada entre las Rosaceas europeas. Actualmente se emplea en toda Europa en reforestación de tierras agrarias y en …
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Survival strategies of Mycobacterium avium subsp. paratuberculosis in a variety of microenvironments.
Mycobacteria, specifically Mycobacterium avium subsp. paratuberculosis (MAP), are extreme strategists and as a rule live by deception. Mycobacteria represent a group of closely related acid-fast bacilli that encompass a wide-range of host tropisms and diseases. Mycobacteria can be divided into two …
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Characterization of Cadmium susceptibility in Mycobacterium avium, Mycobacterium intracellulare and Mycobacterium scrofulaceum
Cadmium accumulation, retention and sequestering by protein were measured in two Mycobacterium scrofulaceum strains differing in their susceptibility to that toxic heavy metal cation. Cadmium accumulation was energy-dependent and temperature-sensitive. The tolerant strain had lower K<sub>m</sub> …
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Investigation of the host-mediated proteolytic response to pulmonary Mycobacterium Avium Complex infection
… is increasing rapidly. In the UK, Mycobacterium avium complex (MAC) is the most common pulmonary NTM infection outside the setting of cystic fibrosis lung disease. Patients with pulmonary MAC infection develop cavitating lung disease or nodular bronchiectasis. Prolonged treatment is required, …
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The Effect of Gamma Irradiation on Growth of Seven Strains of Trypanosoma avium
… within six strains of Trypanosoma avium. A seventh strain was later added for the last two irradiation treatments. Gross morphology and differences in growth curves associated with varying temperatures suggested that the strains being cultured were not the same. With these …
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Transmission Dynamics Of Mycobacterium Avium Subspecies Paratuberculosis In Closed Dairy Herds In The Us
… focused on within farm dynamics of Mycobacterium avium subsp paratuberculosis (MAP) infection on commercial US dairies. We focused on using deterministic mathematical models informed by molecular epidemiology and analysis of longitudinal data to evaluate current assumptions of MAP transmission. In …
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Effect of Temperature upon Reproduction and Cyclic Development of Culture Forms of Trypanosoma Avium
Though much research has been done on the parasitic protozoans of the suborder Trypanosomatina in general, particularly those pathogenic trypanosomes which infect mammals, relatively little research has been directed toward those forms which infect birds.
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Age and Dose Dependent Susceptibility to Mycobacterium avium subspecies paratuberculosis Infection in Dairy Calves
Mycobacterium avium subspecies paratuberculosis (MAP) causes Johne’s disease (JD), a chronic enteritis in ruminants. Control programs focus on prevention of infection of susceptible individuals: calves < 6 months of age. However, this age-cut-off for susceptibility is not well supported …
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Investigation of catalase and superoxide dismutase from Mycobacterium avium, M. intracellulare and M. scrofulaceum
… detected in cell-free extracts of Mycobacterium avium, M. intracellulare and M. scrofulaceum (MAIS). The M. scrofulaceum isolates had the highest catalase activity, while both M. avium and M. intracellulare had significantly lower activities. The percentage of catalase activity remaining, after …
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