Compensatory evolution drives multidrug-resistant tuberculosis in Central Asia

Abstract Bacterial factors favoring the unprecedented multidrug-resistant tuberculosis (MDR-TB) epidemic in the former Soviet Union remain unclear.We utilized whole genome sequencing and Bayesian statistics to analyze the evolutionary history, temporal emergence of resistance and transmission networks of MDR-MTBC strains from Karakalpakstan, Uzbekistan (2001-2006).One MTBC-clone (termed Central Asian outbreak, CAO) with resistance mediating mutations to eight anti-TB drugs existed prior the worldwide introduction of standardized WHO-endorsed directly observed treatment, short-course (DOTS). DOTS implementation in Karakalpakstan in 1998 likely selected for these CAO-strains, comprising 75% of sampled MDR-TB strains in 2005/2006. CAO-strains were also identified in a previously published cohort from Samara, Russia (2008-2010). Similarly, transmission success and resistance development was linked to mutations compensating fitness deficits associated with rifampicin resistance.The genetic make-up of these outbreak clades threatens the success of both empirical and standardized guideline driven MDR-TB therapies, including the newly WHO-endorsed short MDR-TB regimen in Uzbekistan..

Medienart:

Preprint

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

bioRxiv.org - (2020) vom: 18. Jan. Zur Gesamtaufnahme - year:2020

Sprache:

Englisch

Beteiligte Personen:

Merker, Matthias [VerfasserIn]
Barbier, Maxime [VerfasserIn]
Cox, Helen [VerfasserIn]
Rasigade, Jean-Philippe [VerfasserIn]
Feuerriegel, Silke [VerfasserIn]
Kohl, Thomas A. [VerfasserIn]
Diel, Roland [VerfasserIn]
Borrell, Sonia [VerfasserIn]
Gagneux, Sebastien [VerfasserIn]
Nikolayevskyy, Vladyslav [VerfasserIn]
Andres, Sönke [VerfasserIn]
Nübel, Ulrich [VerfasserIn]
Supply, Philip [VerfasserIn]
Wirth, Thierry [VerfasserIn]
Niemann, Stefan [VerfasserIn]

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doi:

10.1101/334599

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

XBI000289426