II. Pathophysiology: Characteristics

  1. Rod shaped Bacteria
  2. Obligate aerobic Bacteria
    1. Hence predisposition for the lungs (e.g. Tuberculosis)
  3. Acid fast organisms due to lipid rich cell walls
    1. Acid Fast Staining is unique to Mycobacteria and Nocardia
  4. Mycobacteria grow slowly in culture (up to 6 weeks)
    1. Many Mycobacterial species grow in clumps due to their hydrophobic, lipid rich cell walls

III. Types

  1. Tuberculous Mycobacteria
    1. Mycobacterium tuberculosis
    2. Mycobacterium leprae (Leprosy, Hansen's Bacillus)
    3. Mycobacterium Bovis
      1. Primarily infects cattle, but may also cause Tuberculosis in humans
      2. Transmitted in unpasteurized milk or dairy products from infected cattle
      3. May also transmitted by airborne Bacteria from infected animals
      4. May also spread by direct contact during meat processing
  2. Non-Tuberculous Mycobacteria
    1. Background
      1. Ubiquitous Bacteria found in soil and water
      2. Healthy patients are frequently exposed but rarely infected
    2. Mycobacterium Avium Complex (MAC)
      1. AIDS defining disease
      2. May also less commonly infect lungs in immunocompetent patients
    3. Mycobacterium Abscessus
      1. May affect lung, skin, soft tissue and bone
    4. Mycobacterium Chelonae
      1. May affect skin, soft tissue and bone
      2. May cause Keratitis in Contact Lens users
      3. May cause disseminated infection in Immunocompromised patients
    5. Mycobacterium Fortuitum
      1. May affect skin, soft tissue and bone
    6. Mycobacterium Marinum (Fish Tank Granuloma)
      1. Nodular Lymphangitis in those caring for fish tanks
    7. Mycobacterium Scrofulaceum
      1. Found in house dust, soil, water, and sewage as well as unpasteurized milk
      2. May cause Cervical Lymphadenopathy in children
    8. Mycobacterium Ulcerans ("Buruli Ulcers")
      1. Progressive necrotic Skin Ulcers

IV. References

  1. Gladwin, Trattler and Mahan (2014) Clinical Microbiology, Medmaster, Fl, p. 142-155

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Related Studies

Ontology: Genus Mycobacterium (C0026912)

Definition (NCI_CDISC) Any bacteria that is not assigned to the species level but can be assigned to the Mycobacterium genus level.
Definition (NCI) A genus of acid-fast Gram-positive, aerobic and nonmotile bacteria in the phylum Actinobacteria.
Definition (MSH) A genus of gram-positive, aerobic bacteria. Most species are free-living in soil and water, but the major habitat for some is the diseased tissue of warm-blooded hosts.
Definition (CSP) genus of gram positive, aerobic bacteria; most species are free living in soil and water, but the major habitat for some is the diseased tissue of warm blooded hosts.
Concepts Bacterium (T007)
MSH D009161
SnomedCT 25714003, 243368001
LNC LP16746-7
English Mycobacterium, MYCOBACT, mycobacterium, Mycobacterium Lehmann and Neumann 1896, Mycobacterium (living organism) (organism), MYCOBACTERIUM, Mycobacterium, NOS, Mycobacterium (living organism) [Ambiguous], Mycobacterium (organism), Genus Mycobacterium (organism), Mycobacteria, Genus Mycobacterium
Swedish Mycobacterium
Spanish Micobacterium, Mycobacterium (organismo), género Mycobacterium, Mycobacterium (organismo vivo), Mycobacterium (concepto no activo), micobacteria, Mycobacterium, género Mycobacterium (organismo)
Czech Mycobacterium
Finnish Mykobakteeri
Russian MIKOBAKTERIOZY, VOZBUDITELI, MIKOBAKTERII, MYCOBACTERIUM, МИКОБАКТЕРИИ, МИКОБАКТЕРИОЗЫ, ВОЗБУДИТЕЛИ
Croatian MYCOBACTERIUM
Polish Mycobacterium, Prątki
Norwegian Mycobacterium
French Mycobacterium
German Mycobacterium
Italian Mycobacterium
Dutch Mycobacterium
Portuguese Mycobacterium

Ontology: Mycobacterium bovis (C0026917)

Definition (NCI_CDISC) Any bacterial organism that can be assigned to the species Mycobacterium bovis.
Definition (NCI) A species of Mycobacterium that is a member of the Mycobacterium tuberculosis complex. It is the causative agent of tuberculosis in cattle.
Definition (CSP) bovine variety of the tubercle bacillus; it is called also Mycobacterium tuberculosis var. bovis.
Definition (MSH) The bovine variety of the tubercle bacillus. It is called also Mycobacterium tuberculosis var. bovis.
Concepts Bacterium (T007)
MSH D009163
SnomedCT 27142009
LNC LP19915-5
Swedish Mycobacterium bovis
English MYCOBACT BOVIS, mycobacterium bovis, Mycobacterium bovis Karlson and Lessel 1970, Mycobacterium bovis subsp. bovis Karlson and Lessel 1970, Mycobacterium tuberculosis typus bovinus, Mycobacterium tuberculosis var. bovis, MYCOBACTERIUM BOVIS, Bovine tubercle bacillus, Mycobacterium bovis (organism), Mycobacterium bovis
Czech Mycobacterium bovis
Finnish Mycobacterium bovis
Russian MIKOBAKTERII TUBERKULEZA BYCH'EGO, TUBERKULEZNAIA PALOCHKA (BYCHII TIP), KAL'MET-GERENA BATSILLY, MYCOBACTERIUM BOVIS, КАЛЬМЕТ-ГЕРЕНА БАЦИЛЛЫ, МИКОБАКТЕРИИ ТУБЕРКУЛЕЗА БЫЧЬЕГО, ТУБЕРКУЛЕЗНАЯ ПАЛОЧКА (БЫЧИЙ ТИП)
Japanese マイコバクテリウム・ボビス, 結核菌-ウシ型, Calmette-Guerin桿菌, 牛型結核菌, 結核菌-牛型, ウシ型結核菌, Calmette-Guerin杆菌
Polish Mycobacterium bovis, BCG, Prątki bydlęce
Spanish Bacillus Calmette-Guérin, Mycobacterium bovis (organismo), bacilo de la tuberculosis bovina, Mycobacterium bovis
Portuguese Bacillus Calmette-Guérin, Mycobacterium bovis
French Mycobacterium bovis
German Mycobacterium bovis
Italian Mycobacterium bovis
Dutch Mycobacterium bovis, Mycobacterium tuberculosis var. Bovis

Ontology: Mycobacterium scrofulaceum (C0026925)

Definition (NCI) A species of aerobic, Gram positive, rod shaped bacterium assigned to the phylum Actinobacteria. This species is acid fast, nonmotile, acid phosphatase and iron uptake negative and catalase, urease, pyrazinamidase and nicotinamidase positive. M. scrofulaceum is found in environmental sources such as house dust, soil, water, and sewage as well as food sources such as raw milk, and it is frequently associated with cervical adenitis in children.
Definition (NCI_CDISC) Any bacterial organism that can be assigned to the species Mycobacterium scrofulaceum.
Definition (MSH) A non-tuberculous mycobacterium causing cervical lymphadenitis in children. It very rarely causes pulmonary disease, and is believed to be non-pathogenic in animals.
Concepts Bacterium (T007)
MSH D015359
SnomedCT 20141004
Swedish Mycobacterium scrofulaceum
English MYCOBACT SCROFULACEUM, Mycobacterium scrofulaceum Prissick and Masson 1956, mycobacterium scrofulaceum, Mycobacterium scrofulaceum, MYCOBACTERIUM SCROFULACEUM, Scrofula scotochromogen, Mycobacterium scrofulaceum (organism)
Czech Mycobacterium scrofulaceum
Finnish Mycobacterium scrofulaceum
Polish Grzybobakterie gruźlicy węzłów chłonnych, Mycobacterium scrofulaceum
Norwegian Mycobacterium scrofulaceum
Spanish Mycobacterium scrofulaceum (organismo), Mycobacterium scrofulaceum
French Mycobacterium scrofulaceum
German Mycobacterium scrofulaceum
Italian Mycobacterium scrofulaceum
Russian MYCOBACTERIUM SCROFULACEUM
Dutch Mycobacterium scrofulaceum
Portuguese Mycobacterium scrofulaceum

Ontology: Mycobacterium chelonae (C0085441)

Definition (NCI_CDISC) Any bacterial organism that can be assigned to the species Mycobacterium chelonae.
Definition (NCI) A species of aerobic, Gram positive, rods assigned to the phylum Actinobacteria. This species is acid fast, oxidase negative, urease and catalase positive, nonmotile and nonsporulating. M. chelonae is a fast growing mycobacterium isolated from environmental, animal and human sources and is often associated with post-operative soft tissue infection.
Definition (MSH) A species of gram-positive, aerobic bacteria commonly found in soil and occasionally isolated from sputum. It causes postoperative wound infections as well as gluteal abscesses.
Concepts Bacterium (T007)
MSH D016926
SnomedCT 243377008, 74349000, 73337005
English Mycobacterium chelonei, Mycobact chelonae chelonae, Mycobacterium chelonae ss. chelonae, Mycobacterium chelonae subsp chelonae, MYCOBACT CHELONEI, MYCOBACT CHELONAE, Mycobacterium chelonae subsp. chelonae Bergey et al. 1923, Mycobacterium chelonae subsp. chelonae corrig. (Bergey et al. 1923) Kubica et al 1972 (Approved Lists 1980), Mycobacterium chelonae corrig. Bergey et al. 1923, Mycobacterium chelonae subsp. chelonae, mycobacterium chelonei, mycobacterium chelonae, chelonae mycobacterium, Mycobacterium chelonae chelonae, Mycobacterium chelonei subsp. chelonei, Mycobacterium chelonae ss. chelonae (organism), Mycobacterium chelonae (living organism) (organism), MYCOBACTERIUM CHELONAE SUBSP. CHELONAE, MYCOBACTERIUM CHELONAE, Mycobacterium chelonae (organism), Mycobacterium chelonae (living organism) [Ambiguous], Mycobacterium chelonae
Spanish Mycobacterium chelonae subespecie chelonae, Mycobacterium chelonei, Mycobacterium chelonae, subespecie chelonae, Mycobacterium chelonae, subespecie chelonae (organismo), Mycobacterium chelonae (organismo vivo), Mycobacterium chelonae (concepto no activo), Mycobacterium chelonae (organismo), Mycobacterium chelonae
French Mycobacterium chelonei, Mycobacterium chelonae
Swedish Mycobacterium chelonae
Czech Mycobacterium chelonae
Finnish Mycobacterium chelonae
Japanese マイコバクテリウムケローネ, マイコバクテリウム・ケローネ
Italian Mycobacterium chelonei, Mycobacterium chelonae
Polish Mycobacterium chelonae
Norwegian Mycobacterium chelonae, Mycobacterium chelonei
German Mycobacterium chelonae, Mycobacterium chelonei
Russian MYCOBACTERIUM CHELONAE, MYCOBACTERIUM CHELONEI
Dutch Mycobacterium chelonae, Mycobacterium chelonei
Portuguese Mycobacterium chelonae, Mycobacterium chelonei

Ontology: Mycobacterium ulcerans (bacteria) (C0317759)

Definition (NCI) A species of aerobic, Gram-positive, rod shaped bacteria assigned to the phylum Actinobacteria. This species is acid-fast, catalase, urease and nitrate reduction negative, positive for acid phosphatase activity, and is resistant to isoniazid, para-aminosalicylic acid (PAS) and ethambutol, but sensitive to rifampicin and streptomycin. M. ulcerans is found in the wetlands of tropical and subtropical countries, causes an ulcerative skin disease known as Buruli ulcer, and there is some evidence that it may be transmitted through the bites of infected aquatic insects.
Definition (NCI_CDISC) Any bacterial organism that can be assigned to the species Mycobacterium ulcerans.
Definition (MSH) A slow-growing mycobacterium that infects the skin and subcutaneous tissues, giving rise to indolent BURULI ULCER.
Concepts Bacterium (T007)
MSH D019911
SnomedCT 40713003
English Mycobacterium buruli, Mycobacterium ulcerans, MYCOBACT ULCERANS, MYCOBACT BURULI, Mycobacterium ulcerans MacCallum et al. 1950, Mycobacterium ulcerans (bacteria), MYCOBACTERIUM BURULI, MYCOBACTERIUM ULCERANS, Mycobacterium ulcerans (organism)
French Mycobacterium buruli, Mycobacterium ulcerans
Swedish Mycobacterium ulcerans
Czech Mycobacterium buruli, Mycobacterium ulcerans
Finnish Mycobacterium ulcerans
Polish Mycobacterium ulcerans
Norwegian Mycobacterium ulcerans, Mycobacterium buruli
Spanish Mycobacterium ulcerans (organismo), Mycobacterium ulcerans, Mycobacterium buruli
German Mycobacterium buruli, Mycobacterium ulcerans
Italian Mycobacterium ulcerans
Russian MYCOBACTERIUM ULCERANS
Dutch Mycobacterium buruli, Mycobacterium ulcerans
Portuguese Mycobacterium buruli, Mycobacterium ulcerans

Ontology: Mycobacterium fortuitum (C0317763)

Definition (NCI) A species of aerobic, Gram positive, rod shaped bacterium assigned to the phylum Actinobacteria. This species is acid fast, nonmotile, urease negative and catalase, nitrate reductase, and esculin positive. M. fortuitum is found in natural and processed water sources, sewage and dirt, and can cause various clinical syndromes, including local disease after injury or surgical trauma, and disseminated infection in immunocompromised patients.
Definition (NCI_CDISC) Any bacterial organism that can be assigned to the species Mycobacterium fortuitum.
Definition (MSH) A rapid-growing, nonphotochromogenic species that is potentially pathogenic, producing lesions of lung, bone, or soft tissue following trauma. It has been found in soil and in injection sites of humans, cattle, and cold-blooded animals. (Dorland, 28th ed)
Concepts Bacterium (T007)
MSH D019907
SnomedCT 1485002, 243378003, 333873003
English Mycobacterium fortuitum, MYCOBACT FORTUITUM, mycobacterium fortuitum, fortuitum mycobacterium, Mycobacterium fortuitum da Costa Cruz 1938, Mycobacterium fortuitum (living organism) (organism), MYCOBACTERIUM FORTUITUM, Mycobacterium giae, Mycobacterium minetti, Mycobacterium ranae, Mycobacterium fortuitum (organism), Mycobacterium fortuitum (living organism) [Ambiguous]
Swedish Mycobacterium fortuitum
Czech Mycobacterium fortuitum
Finnish Mycobacterium fortuitum
Polish Mycobacterium fortuitum
Spanish Mycobacterium fortuitum (organismo vivo), Mycobacterium fortuitum (concepto no activo), Mycobacterium fortuitum (organismo), Mycobacterium fortuitum
Norwegian Mycobacterium fortuitum
French Mycobacterium fortuitum
German Mycobacterium fortuitum
Italian Mycobacterium fortuitum
Russian MYCOBACTERIUM FORTUITUM
Dutch Mycobacterium fortuitum
Portuguese Mycobacterium fortuitum

Ontology: Mycobacterium abscessus (C0445910)

Definition (NCI_CDISC) Any bacterial organism that can be assigned to the species Mycobacterium abscessus.
Definition (NCI) A species of aerobic, Gram positive, rod shaped bacteria assigned to the phylum Actinobacteria. This species is acid-fast, nonmotile, does not reduce nitrate, is amidase, urease and nicotinamidase positive and benzamidase, isonicotinamidase, succinamidase and acetamidase negative. M. abscessus is a rapidly growing mycobacterium found in water, soil and dust, and can cause a variety of serious infections of the skin, soft tissues and lungs, especially in persons with chronic lung diseases.
Concepts Bacterium (T007)
SnomedCT 62270009, 113838007
LNC LA16933-6
English Mycobact chelonae abscessus, Mycobacterium abscessus subsp. abscessus, Mycobacterium chelonae subsp. abscessus, mycobacterium abscessus, Mycobacterium abscessus (Moore and Frerichs 1953) Kusunoki and Ezaki 1992 emend. Leao et al. 2011, Mycobacterium chelonae subsp. abscessus corrig. (Moore and Frerichs 1953) Kubica et al 1972 (Approved Lists 1980), Mycobacterium chelonei subsp. abscessus, Mycobacterium chelonae ss. abscessus (organism), MYCOBACTERIUM CHELONAE SUBSP. ABSCESSUS, MYCOBACTERIUM ABSCESSUS, Mycobacterium chelonae ss. abscessus, Mycobacterium abscessus, Mycobacterium chelonae subsp abscessus, Mycobacterium abscessus (organism)
Spanish Mycobacterium chelonae, subespecie abscessus, Mycobacterium chelonae, subespecie abscessus (concepto no activo), Mycobacterium abscessus (organismo), Mycobacterium abscessus

Ontology: Nontuberculous Mycobacteria (C1265234)

Definition (MSH) So-called atypical species of the genus MYCOBACTERIUM that do not cause tuberculosis. They are also called tuberculoid bacilli, i.e.: M. buruli, M. chelonae, M. duvalii, M. flavescens, M. fortuitum, M. gilvum, M. gordonae, M. intracellulare (see MYCOBACTERIUM AVIUM COMPLEX;), M. kansasii, M. marinum, M. obuense, M. scrofulaceum, M. szulgai, M. terrae, M. ulcerans, M. xenopi.
Concepts Bacterium (T007)
MSH D009170
SnomedCT 110379001, 49023005
English Mycobacterium, Atypical, Tuberculoid Bacillus, Opportunist mycobacteria, MYCOBACT ATYPICAL, ATYPICAL MYCOBACT, Atypical Mycobacteria, Atypical Mycobacterium, mycobacteria atypical, atypical mycobacteria, mycobacterium atypical, Nontuberculous Mycobacterium, Mycobacteria, Atypical, Mycobacterium, non-tuberculosis (organism), Mycobacterium, non-tuberculosis, Mycobacterium, non-TB (organism), atypical mycobacterium, ATM, Atypical acid-fast bacillus, Atypical mycobacterium (organism), Atypical mycobacterium, Atypical mycobacteria, Finding of Mycobacterium species not Mycobacterium tuberculosis, Mycobacterium, non-TB, Atypical acid-fast bacillus, NOS, Atypical mycobacterium, NOS, MOTT, Mycobacteria other than tubercle bacilli, NTM, Nontuberculous Mycobacteria
French Mycobacterium atypique, Mycobactéries non tuberculeuses, Bacille tuberculoïde, Mycobactéries atypiques
Czech mykobaktérie atypické
Finnish Atyyppiset mykobakteerit
Italian Bacillo tubercolotico, Micobatterio atipico, Micobatteri atipici, Micobatteri non tubercolari
Russian MIKOBAKTERII ATIPICHNYE, МИКОБАКТЕРИИ АТИПИЧНЫЕ, NETUBERKULEZNYE MIKOBAKTERII, НЕТУБЕРКУЛЕЗНЫЕ МИКОБАКТЕРИИ, MIKOBAKTERII NETUBERKULEZNYE, МИКОБАКТЕРИИ НЕТУБЕРКУЛЕЗНЫЕ, MYCOBACTERIUM DUVALII, MYCOBACTERIUM FLAVESCENS, MYCOBACTERIUM GILVUM, MYCOBACTERIUM GORDONAE, MYCOBACTERIUM OBUENSE, MYCOBACTERIUM SZULGAI, MYCOBACTERIUM TERRAE, TUBERCULOID BACILLUS
Japanese 非定型抗酸菌, 抗酸性菌-非定型, 類結核型桿菌, 非定型抗酸性菌, 非定型ミコバクテリア, 非定型マイコバクテリア, 抗酸菌-非定型, 類結核型杆菌
Spanish micobacterias atípicas, Micobacterias no Tuberculosas, Micobacterias Atípicas, Mycobacterium, no tuberculosis (organismo), Mycobacterium, no - TB (organismo), Mycobacterium, no tuberculosis, micobacteria oportunista, micobacteria atípica (organismo), micobacteria atípica, bacilo acidorresistente atípico, mycobacteria atípica, mycobacterium atípica, Mycobacterium, no - TB, bacilo acidorresistente atípico, SAI, mycobacterium atípica, SAI, Tuberculoid Bacillus
Swedish Mykobakterier, atypiska
Portuguese Micobactérias Atípicas, Micobactérias não Tuberculosas, Micobactérias Anônimas, Tuberculoid Bacillus
Polish Prątki niegrużlicze, Tuberkuloidy
Croatian Netuberkulozne mikobakterije
Norwegian Not Translated[Nontuberculous Mycobacteria]
German Atypische Mykobakterien, Mykobakterien, atypische, Tuberkuloid-Bacillus