Mutations associated with in vitro resistance to bedaquiline in Mycobacterium tuberculosis isolates in Australia.

Tuberculosis (Edinb)

Centre for Infectious Diseases and Microbiology- Public Health, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia; Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Sydney, New South Wales, Australia; NSW Mycobacterium Reference Laboratory, Centre for Infectious Diseases and Microbiology Laboratory Services, Institute of Clinical Pathology and Medical Research, NSW Health Pathology - Western, Sydney, New South Wales, Australia.

Published: July 2018

Genome-wide analysis of 517 Mycobacterium tuberculosis isolates from New South Wales, Australia, have identified previously reported and 8 new mutations in Rv0678 and atpE genes linked to in vitro resistance to bedaquiline, a new class of antimycobacterial drugs. These mutations were present in 2.9% of prospectively sequenced genomes but in 10.6% of strains that were phenotypically multidrug-resistant. However only 14% of isolates with these mutations demonstrated elevated minimum inhibitory concentrations to bedaquiline.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.tube.2018.04.007DOI Listing

Publication Analysis

Top Keywords

vitro resistance
8
resistance bedaquiline
8
mycobacterium tuberculosis
8
tuberculosis isolates
8
mutations
4
mutations associated
4
associated vitro
4
bedaquiline mycobacterium
4
isolates australia
4
australia genome-wide
4

Similar Publications

Chimeric Antigen Receptor (CAR) T cell therapy has revolutionized cancer treatment and is now being explored for other diseases, such as autoimmune disorders. While the tumor microenvironment (TME) in cancer is often immunosuppressive, in autoimmune diseases, the environment is typically inflammatory. Both environments can negatively impact CAR T cell survival: the former through direct suppression, hypoxia, and nutrient deprivation, and the latter through chronic T cell receptor (TCR) engagement, risking exhaustion.

View Article and Find Full Text PDF

Background: Ovarian cancer (OC), particularly high-grade serous ovarian carcinoma (HGSOC), is the leading cause of mortality from gynecological malignancies worldwide. Despite the initial effectiveness of treatment, acquired resistance to poly(ADP-ribose) polymerase inhibitors (PARPis) represents a major challenge for the clinical management of HGSOC, highlighting the necessity for the development of novel therapeutic strategies. This study investigated the role of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3 (PFKFB3), a pivotal regulator of glycolysis, in PARPi resistance and explored its potential as a therapeutic target to overcome PARPi resistance.

View Article and Find Full Text PDF

Background: Oral squamous cell carcinoma (OSCC) ranks as the sixth most common malignancy globally. Cisplatin is the standard chemotherapy for OSCC, but resistance often reduces its efficacy, necessitating new treatments with fewer side effects. Rumex dentatus L.

View Article and Find Full Text PDF

This study explores the effectiveness of various antifungal drugs in treating sporotrichosis caused by Sporothrix schenckii, especially in non-wild-type (non-WT) strains. The drugs tested include enilconazole (ENIL), isavuconazole (ISA), posaconazole (POS), terbinafine (TER), and itraconazole (ITC). The study involved in vitro and in vivo tests on 10 WT isolates and eight ITC non-WT isolates.

View Article and Find Full Text PDF

Liquid-based encapsulation for implantable bioelectronics across broad pH environments.

Nat Commun

January 2025

Department of Biomedical Engineering and the Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA.

Wearable and implantable bioelectronics that can interface for extended periods with highly mobile organs and tissues across a broad pH range would be useful for various applications in basic biomedical research and clinical medicine. The encapsulation of these systems, however, presents a major challenge, as such devices require superior barrier performance against water and ion penetration in challenging pH environments while also maintaining flexibility and stretchability to match the physical properties of the surrounding tissue. Current encapsulation materials are often limited to near-neutral pH conditions, restricting their application range.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!