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KMID : 1044520210840010001
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Tuberculosis and Respiratory Diseases
2021 Volume.84 No. 1 p.1 ~ p.12
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An Overview of Genetic Information of Latent Mycobacterium tuberculosis
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Hamidieh Faezeh
Farnia Parissa
Nowroozi Jamileh
Farnia Poopak
Velayati Ali Akbar
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Abstract
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Mycobacterium tuberculosis has infected more than two billion individuals worldwide, of whom 5%-10% have clinically active disease and 90%-95% remain in the latent stage with a reservoir of viable bacteria in the macrophages for extended periods of time. The tubercle bacilli at this stage are usually called dormant, non-viable, and/or non-culturable microorganisms. The patients with latent bacilli will not have clinical pictures and are not infectious. The infections in about 2%-23% of the patients with latent status become reactivated for various reasons such as cancer, human immunodeficiency virus infection, diabetes, and/or aging. Many studies have examined the mechanisms involved in the latent state of Mycobacterium and showed that latency modified the expression of many genes. Therefore, several mechanisms will change in this bacterium. Hence, this study aimed to briefly examine the genes involved in the latent state as well as the changes that are caused by Mycobacterium tuberculosis. The study also evaluated the relationship between the functions of these genes.
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KEYWORD
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Mycobacterium tuberculosis, Latency, Tuberculosis, Dormancy, Hypoxic Conditions
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