Mycobacterium tuberculosis wikipedia 相關
廣告Submit By 12th August 2024 | Tuberculosis Preventive Treatment | BMJ Open Respiratory. Implementation and Scale-up of Tuberculosis Preventive Treatment | BMJ Open Respiratory
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What is Mycobacterium tuberculosis?
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Mycobacterium tuberculosis (M. tb), also known as Koch's bacillus, is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis. [1] [2] First discovered in 1882 by Robert Koch, M. tuberculosis has an unusual, waxy coating on its cell surface primarily due to the presence of mycolic acid.
The main cause of TB is Mycobacterium tuberculosis (MTB), a small, aerobic, nonmotile bacillus. The high lipid content of this pathogen accounts for many of its unique clinical characteristics. It divides every 16 to 20 hours, which is an extremely slow rate
Mycobacterium is a genus of over 190 species in the phylum Actinomycetota, assigned its own family, Mycobacteriaceae. This genus includes pathogens known to cause serious diseases in mammals, including tuberculosis ( M. tuberculosis) and leprosy ( M. leprae) in humans.
The Mycobacterium tuberculosis complex ( MTC or MTBC) is a genetically related group of Mycobacterium species that can cause tuberculosis in humans or other animals. It includes: Mycobacterium tuberculosis. Mycobacterium africanum. Mycobacterium orygis [1] Mycobacterium bovis and the Bacillus Calmette–Guérin strain. Mycobacterium microti.
Mycobacteria are a family of small, rod-shaped bacilli that can be classified into three main groups for the purpose of diagnosis and treatment: Mycobacterium tuberculosis complex, which can cause tuberculosis: M. tuberculosis, M. bovis, M. africanum, M. microti and M. canettii.
Tuberculosis is diagnosed by finding Mycobacterium tuberculosis bacteria in a clinical specimen taken from the patient. While other investigations may strongly suggest tuberculosis as the diagnosis, they cannot confirm it.
It is generally accepted that the causative agent, Mycobacterium tuberculosis originated from other, more primitive organisms of the same genus Mycobacterium. In 2014, results of a new DNA study of a tuberculosis genome reconstructed from remains in southern Peru suggest that human tuberculosis is less than 6,000 years old.
