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KMID : 1023520230460010029
Korean Journal of Veterinary Service
2023 Volume.46 No. 1 p.29 ~ p.34
Effect of culture-promoting ingredients (CPI-107) on the culture of Mycobacterium tuberculosis
Kim Seung-Cheol

Monoldorova Sezim
Jeon Bo-Young
Abstract
Mycobacterium tuberculosis complex (M. tuberculosis complex) is a causative agent of contagious chronic disease in a wide range of mammalian hosts, mainly cattle, goat, pigs, wildlife, and humans. The definite diagnosis of tuberculosis is made based on culture of M. tuberculosis, but it takes a long time. In the present study, we analyzed whether the detection time of M. tuberculosis could be reduced when cultured in the medium containing the culture-promoting ingredients-107 (CPI-107) using the BacT/Alert 3D system, an automatic culture system. The time to detection (TTD) tended to decrease as the added concentration of CPI-107 increase. In the case of low numbers of M. tuberculosis, it decreased by 21.0% at 1.2 mg/mL of CPI-107 and by 15.9% in the case of high numbers of M. tuberculosis. In the culture using clinically isolated M. tuberculosis strains, the shortening of the culture time by CPI was more evident. In conclusion, the detection time of M. tuberculosis was shortened in the medium added with CPI-107, and this could be used for isolation, culture and drug susceptibility test of M. tuberculosis.
KEYWORD
Mycobacterium tuberculosis complex (M. tuberculosis complex), Culture-promoting Ingredients-107 (CPI-107), Time to detection (TTD), BacT/Alert 3D system
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