Advances and Challenges in Mycobacterium tuberculosis Research and Therapeutics Development

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Medical Microbiology".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 3590

Special Issue Editors


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Guest Editor
Great Ormond Street Hospital London WC1N 3JH, UK; Imperial College London, London SW7 2BU, UK
Interests: tuberculosis; global health; tropical infections; bone and joint infections; meningitis; neonatal infections; viral infections

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Guest Editor
Guys and St Thomas’ NHS Trust, London SE1 9RS, UK
Interests: tuberculosis (TB); neglected tropical diseases; point-of-care testing; TB therapeutics.

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Guest Editor
Department of Microbiology and Infectious diseases, Royal London Hospital, Barts NHS Health trust, London E1 1FR, UK
Interests: infectious diseases; tuberculosis; microbiology; anti-microbial resistance.

Special Issue Information

Dear Colleagues,

Tuberculosis (TB) is the leading cause of death worldwide from a single infectious agent and is one of the top ten causes of death overall, causing an estimated 10 million infections and 1.4 million deaths in 2019. In 2014, the WHO committed to large reductions in TB incidence and death through the “End TB” strategy, and although incidence is falling globally, it is not falling fast enough to meet these goals.

In recent years, molecular techniques such as GeneXpert and Whole Genome Sequencing have led to improvements in diagnostic efficiency, contact tracing, and resistance testing and contributed to our understanding of key aspects of the organism, such as transmission and virulence.

Furthermore, novel therapeutic agents provide more options for treatment of Multi-Drug Resistant Tuberculosis (MDR-TB), and injectable free regimens may in future improve compliance and cure rates.

At a time when progress in the fight against TB is being threatened by the global COVID-19 pandemic, it is important to focus on bold technological improvements such as improved vaccines, point-of-care diagnostic testing, treatment for latent TB, and shorter treatment regimens for active TB. For this Special Issue, we invite contributions on all aspects of the development of tuberculosis diagnostics and therapeutics.

Dr. Louis Grandjean
Dr. Marc Woodman
Dr. Shruthi Chandran
Guest Editors

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Keywords

  • tuberculosis (TB)
  • TB diagnostics
  • whole genome sequencing (WGS)
  • resistance
  • TB therapeutics
  • infectious diseases.

Published Papers (1 paper)

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Research

18 pages, 4679 KiB  
Article
MDR and Pre-XDR Clinical Mycobacterium tuberculosis Beijing Strains: Assessment of Virulence and Host Cytokine Response in Mice Infectious Model
by Mikhail V. Fursov, Egor A. Shitikov, Denis A. Lagutkin, Anastasiia D. Fursova, Elena A. Ganina, Tatiana I. Kombarova, Natalia S. Grishenko, Tatiana I. Rudnitskaya, Dmitry A. Bespiatykh, Nadezhda V. Kolupaeva, Viktoria V. Firstova, Lubov V. Domotenko, Anna E. Panova, Anatoliy S. Vinokurov, Vladimir A. Gushchin, Artem P. Tkachuk, Irina A. Vasilyeva, Vasiliy D. Potapov and Ivan A. Dyatlov
Microorganisms 2021, 9(8), 1792; https://0-doi-org.brum.beds.ac.uk/10.3390/microorganisms9081792 - 23 Aug 2021
Cited by 4 | Viewed by 2835
Abstract
Mycobacterium tuberculosis Beijing genotype associated with drug resistance is a growing public health problem worldwide. The aim of this study was the assessment of virulence for C57BL/6 mice after infection by clinical M. tuberculosis strains 267/47 and 120/26, which belong to the modern [...] Read more.
Mycobacterium tuberculosis Beijing genotype associated with drug resistance is a growing public health problem worldwide. The aim of this study was the assessment of virulence for C57BL/6 mice after infection by clinical M. tuberculosis strains 267/47 and 120/26, which belong to the modern sublineages B0/W148 and Central Asia outbreak of the Beijing genotype, respectively. The sublineages were identified by the analysis of the strains’ whole-genomes. The strains 267/47 and 120/26 were characterized as agents of pre-extensively drug-resistant (pre-XDR) and multidrug-resistant (MDR) tuberculosis, respectively. Both clinical strains were slow-growing in 7H9 broth compared to the M. tuberculosis H37Rv strain. The survival rates of C57BL/6 mice infected by 267/47, 120/26, and H37Rv on the 150th day postinfection were 10%, 40%, and 70%, respectively. Mycobacterial load in the lungs, spleen, and liver was higher and histopathological changes were more expressed for mice infected by the 267/47 strain compared to those infected by the 120/26 and H37Rv strains. The cytokine response in the lungs of C57BL/6 mice after infection with the 267/47, 120/26, and H37Rv strains was different. Notably, proinflammatory cytokine genes Il-1α, Il-6, Il-7, and Il-17, as well as anti-inflammatory genes Il-6 and Il-13, were downregulated after an infection caused by the 267/47 strain compared to those after infection with the H37Rv strain. Full article
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