• strains
  • Some M. marinum isolates have been shown to harbor the insertion sequence, IS2404, however, no M. marinum strains contain IS2606. (wikipedia.org)
  • Evidence for antagonism of sponge-derived Salinispora against sponge-derived Mycobacterium strains from the same sponge specimen and the production of antimycobacterial antibiotics by this Salinispora strain suggest that the synthesis of such antibiotics may have functions in competition between sponge microbial community members. (wiley.com)
  • Most mycobacteria are susceptible to the antibiotics clarithromycin and rifamycin, but antibiotic-resistant strains have emerged. (wikipedia.org)
  • colonies
  • Runyon IV organisms are rapid growing for mycobacteria (colonies in 5 days). (wikipedia.org)
  • Mycobacteria that form colonies clearly visible to the naked eye within seven days on subculture are termed rapid growers, while those requiring longer periods are termed slow growers. (wikipedia.org)
  • A team of researchers at the Genetics and Microbiology Department of the Autonomous University of Barcelona, Barcelona, Spain discovered that Mycobacterium vaccae changes from its "smooth" type to its "rough" type (referring to how colonies of this organism appear under a microscope) at thirty degrees Celsius. (wikipedia.org)
  • polyketide
  • Five distinct, naturally occurring mycolactone structural variants have been described so far: Mycolactone A/B (M. ulcerans from Africa, Malaysia, Japan) Mycolactone C (M. ulcerans from Australia) Mycolactone D (M. ulcerans from China) Mycolactone E (M. liflandii from Sub-Saharan Africa) Mycolactone F (M. pseudoshottsii and M. marinum from around the world) Mycolactone is produced by MPM through condensation of two polyketide chains (known as the core and acyl side chain). (wikipedia.org)
  • organism
  • Considering the occurrence of the antimycobacterial organism Salinispora in marine sponges, the question arises as to whether any selective pressure for the evolution of its antimycobacterial compounds has acted - for example a competitive advantage in an environment in which mycobacteria co-occur and even compete for similar resources. (wiley.com)
  • Injections
  • AAAS EurekAlert reproduction of an American Society for Microbiology scientific session presentation by Dorothy Matthews and Susan Jenks on their work showing injections of live mycobacterium vaccae stmulated growth of neurons, reduced anxiety behavior in mice, and reduced time for them to navigate mazes by half. (wikipedia.org)
  • rifamycin
  • This Salinispora isolate was confirmed to synthesize rifamycin and displayed inhibitory effects against representatives from two of three Mycobacterium phylotype groups. (wiley.com)
  • Slowly
  • Mycobacterium shottsii is a slowly growing, non-pigmented mycobacteria isolated from striped bass (Morone saxatilis) during an epizootic of mycobacteriosis in the Chesapeake Bay. (wikipedia.org)
  • Isolate M175T could be differentiated from other slowly growing, non-pigmented mycobacteria by its inability to grow at 37 °C, production of niacin and urease, absence of nitrate reductase and resistance to isoniazid, thiacetazone and thiophene-2-carboxylic hydrazide. (wikipedia.org)
  • closely related
  • An actinobacterium closely related to S. arenicola , a known producer of the antimycobacterial rifamycins, was coisolated from the same A. queenslandica specimen from which mycobacteria had been isolated. (wiley.com)
  • Mycobacteria appear phenotypically most closely related to members of Nocardia, Rhodococcus and Corynebacterium. (wikipedia.org)
  • immune response
  • They discovered that the "smooth" type of Mycobacterium vaccae has a substance on the outside of its cell wall which interferes with the production of Th-1 cytokines, responsible for some kinds of T-helper cell immune response. (wikipedia.org)
  • growth
  • The inhibition of growth of M. marinum at 37 °C is related to its ability to infect the cooler parts of the body especially the extremities. (wikipedia.org)
  • University
  • Ramakrishnan completed postdoctoral work in Stanley Falkow's lab at Stanford University, where she developed Mycobacterium marinum as a model for TB. (wikipedia.org)
  • A research group at Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, University of Bristol, Bristol, England, UK has shown that Mycobacterium vaccae stimulated a newly discovered group of neurons, increased levels of serotonin and decreased levels of anxiety in mice. (wikipedia.org)
  • grow
  • The Greek prefix myco- means "fungus," alluding to the way mycobacteria have been observed to grow in a mold-like fashion on the surface of cultures. (wikipedia.org)
  • heat
  • M. marinum is heat sensitive and very hot compresses applied directly to the infected area have been effective in eradicating the bacterium. (wikipedia.org)