Global Health and Tropical Medicine
The emergence of multidrug and extensively drug-resistant tuberculosis represents a major threat to the control of the disease. Antimicrobial drug resistance in Mycobacterium tuberculosis is not merely a consequence of the occurrence of gene mutations in the drug targets but a balance between the acquisition of mutations and drug efflux. The low permeability of the […]
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Decades after tuberculosis having acquired the status of curable disease, the emergence of Mycobacterium tuberculosis strains resistant to the most effective anti-tuberculosis drugs used in first-line treatment have placed this disease again as a global threat to public health. The epidemiology, pathogenesis, diagnosis and approach of drug-resistant tuberculosis in Portugal and in the world are […]
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Efflux pump inhibitors are of great interest since their use as adjuvants of bacterial chemotherapy can increase the intracellular concentrations of the antibiotics and assist in the battle against the rising of antibiotic-resistant bacteria. In this work, we have described the mode of action of the 2-phenylquinoline efflux inhibitor (4-(2-(piperazin-1-yl)ethoxy)-2-(4-propoxyphenyl) quinolone – PQQ4R), against Escherichia coli, by studding […]
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Numerous studies show efflux as a universal bacterial mechanism contributing to antibiotic resistance and also that the activity of the antibiotics subject to efflux can be enhanced by the combined use of efflux inhibitors. Nevertheless, the contribution of efflux to the overall drug resistance levels of clinical isolates of Mycobacterium tuberculosis is poorly understood and […]
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Tuberculosis (TB) poses a serious public health problem in Angola. No surveillance data on drug resistance is available and nothing is known regarding the genetic diversity and population structure of circulating Mycobacterium tuberculosis strains. Here, we have genotyped and evaluated drug susceptibility of 89 Mycobacterium tuberculosis clinical isolates from Luanda. Thirty-three different spoligotype profiles corresponding […]
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UID/04413/2025 - DOI: 10.54499/UID/04413/2025
UID/PRR/04413/2025 - DOI: 10.54499/UID/PRR/04413/2025
UID/PRR2/04413/2025 - DOI: 10.54499/UID/PRR2/04413/2025