Examination of soil in the brisbane area for organisms of the Mycobacterium avium-intracellulare-scrofulaceum complex

Reznikov, M.; Leggo, Janet H.

doi:10.3109/00313027409068997

Cited by 30 publications

(16 citation statements)

References 8 publications

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“…Among these, * Corresponding author. a seroagglutination test was introduced by Shaefer [14], and modified by Reznikov and Leggo [15], and has been used by several researchers [10,16]. Others have used thin layer chromatography for subtyping [11,17], and this has the advantage that it can differentiate isolates which autoagglutinate or are untypable in the seroagglutination test.…”

Section: Introductionmentioning

confidence: 99%

Genetic characterization ofMycobacterium aviumisolates recovered from humans and animals in Australia

Feizabadi

Robertson

Cousins³

et al. 1996

Epidemiol. Infect.

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SUMMARYGenetic relationships amongst 115 mainly Australian isolates of Mycobacterium avium were assessed using multilocus enzyme electrophoresis (MEE). The isolates were divided into 58 electrophoretic types (ETs), with a mean genetic diversity of 0-29. Isolates from humans were closely related to but distinct from those cultured from birds, whilst some porcine isolates belonged to the same ETs as certain human isolates. Pulsed field gel electrophoresis (PFGE) was used to differentiate related isolates, and those from birds and some from other animals, including pigs, were distinguished from the human isolates. The results of MEE and PFGE suggested that certain strains of M. avium may be transmitted between birds and pigs, but there was no clear evidence of transmission to humans. The serovar of the M. avium isolates was not obviously related to their ET assignment or their PFGE type.

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Section: Introductionmentioning

confidence: 99%

Genetic characterization ofMycobacterium aviumisolates recovered from humans and animals in Australia

Feizabadi

Robertson

Cousins³

et al. 1996

Epidemiol. Infect.

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“…The Australian isolates were serotyped using the microtube agglutination test as described by Reznikov & Leggo (1972). All isolates were examined by MLEE, and all 28 isolates of M. intracellulare in ETs 4,8,9,10,23,27,32,33 and three isolates of 'X' mycobacteria from ET 63 were examined by PFGE (see Table 3).…”

Section: Bacterial Isolates and Their Identification A Total Of 97mentioning

confidence: 99%

Use of multilocus enzyme electrophoresis to examine genetic relationships amongst isolates of Mycobacterium intracellulare and related species

Feizabadi

Robertson

Cousins³

et al. 1997

Microbiology

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As part of a larger study investigating diversity and distribution of Mycobacterium spp. in Australia, multilocus enzyme electrophoresis was used to assess genetic relationships a t 17 enzyme loci amongst a collection of reference strains and isolates initially identified on biochemical and other grounds as M. intracellulare (70), 'X' mycobacteria (lo), M. scrofulaceum (7), M. avium (8) and M. avium subsp. paratuberculosis (2). Two of the isolates initially identified as M. intracellulare were shown to be quite distinct from the others. Both gave negative results in a species-specific DNA probe test, whilst one was positive by PCR. These results emphasize the uncertainties involved in identifying members of this group. The other M. intracellulare isolates formed a cohesive but diverse group, being divided into 48 electrophoretic types (ETs), with a mean genetic diversity of 0.38. Forty-three of these ETs contained only single isolates. There was no clear relationship between the serovar and E l designation. The index of association calculated for M. intracellulare was significantly different from zero, suggesting that it is a clonal species. PFGE was also applied to selected isolates from the ETs containing multiple isolates, and some of these could be differentiated further. The strains of M. scrofulaceum and 'X' mycobacteria were distinct from M. intracellulare, but themselves were highly heterogeneous, with mean genetic diversities of 0.66 and 0-65, respectively. Each of these groups may represent more than one species. M. avium strains were distinct from the two M. avium subsp. paratuberculosis strains, as well as from the other mycobacteria studied.

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“…avium complex isolates have been recovered from soils collected in Wales (387), Australia (414,415), Brazil (97), Uganda (133), Texas (263), Cleveland (550), and the southeastern United States (57). In a study of the local environment of HIV-infected individuals in San Francisco, M. avium complex organisms were rarely recovered from tap water or food samples but were recovered from 55% of samples of potted soils (552).…”

Section: Physiologic Ecology Of the M Avium Complexmentioning

confidence: 99%

Epidemiology of Infection by Nontuberculous Mycobacteria

Martin

Parker²,

Falkinham

1987

Am Rev Respir Dis

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Examination of soil in the brisbane area for organisms of the Mycobacterium avium-intracellulare-scrofulaceum complex

Cited by 30 publications

References 8 publications

Genetic characterization ofMycobacterium aviumisolates recovered from humans and animals in Australia

Genetic characterization ofMycobacterium aviumisolates recovered from humans and animals in Australia

Use of multilocus enzyme electrophoresis to examine genetic relationships amongst isolates of Mycobacterium intracellulare and related species

Epidemiology of Infection by Nontuberculous Mycobacteria

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