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Tuberculosis remains a leading cause of death by infectious disease. The long treatment regimen and the spread of drug-resistant strains of the causative agent Mycobacterium tuberculosis (Mtb) necessitates the development of new treatment options. In a phenotypic screen, nitrofuran-resorufin conjugate 1 was identified as a potent sub-micromolar inhibitor of whole cell Mtb. Complete loss of activity was observed for this compound in Mtb mutants affected in enzyme cofactor F biosynthesis (fbiC), suggesting that 1 undergoes prodrug activation in a manner similar to anti-tuberculosis prodrug pretomanid. Exploration of the structure-activity relationship led to the discovery of novel resorufin analogues that do not rely on the deazaflavin-dependent nitroreductase (Ddn) bioactivation pathway for their antimycobacterial activity. These analogues are of interest as they work through an alternative, currently unknown mechanism that may expand our chemical arsenal towards the treatment of this devastating disease.
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http://dx.doi.org/10.1002/cmdc.202400482 | DOI Listing |
RSC Adv
September 2025
Department of Chemistry, Central University of Karnataka Kalaburagi-585 367 Karnataka India.
This research work details the use of a molecular hybridization technique to create a library of four series of hydrazineyl-linked imidazo[1,2-]pyrimidine-thiazole derivatives. The structure of one of the final products, K2, was validated using single-crystal X-ray diffraction. Twenty-six novel hybrid molecules (K1-K26) were synthesized and tested for activity against the H37Rv strain.
View Article and Find Full Text PDFFront Med (Lausanne)
August 2025
Department of Pulmonology, Institute of Pneumology, Bucharest, Romania.
Sarcoidosis is a multisystem granulomatous disorder of unknown etiology, characterized by the formation of non-caseating granulomas in affected tissues and organs. In over half of the cases, the disease undergoes spontaneous remission. In contrast, tuberculosis (TB) is an infectious disease caused by , which, if left untreated, can be fatal.
View Article and Find Full Text PDFCureus
August 2025
Respiratory Medicine, Sri Ramachandra Institute of Higher Education and Research, Chennai, IND.
Tuberculosis (TB) is a multisystem infectious disease with both pulmonary and extrapulmonary manifestations. TB can also induce a hypercoagulable state, setting off a cascade of changes in the body, including systemic inflammation, endothelial dysfunction, and abnormalities in the coagulation and fibrinolytic pathways. Collectively, these factors significantly increase the risk of venous thromboembolism, such as deep vein thrombosis and pulmonary embolism.
View Article and Find Full Text PDFNed Tijdschr Tandheelkd
September 2025
the Department of Internal Medicine, University Medical Center Groningen (UMCG).
A 27-year-old man from Ethiopia had undergone an extraction of a molar in Libya ten months earlier, after which a submental swelling developed. For that reason, an oral and maxillofacial surgery department was consulted. Clinical examination showed a tender, firm-to-the-touch, non-mobile swelling with central ulceration.
View Article and Find Full Text PDFChem Biol Drug Des
September 2025
School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa.
Molecular hybridization of isoniazid with hydrophobic aromatic moieties represents a promising strategy for the development of novel anti-tubercular therapeutics. In this study, a series of hybrid molecules (5a-i) was synthesized by linking isoniazid with aromatic sulfonate esters via a hydrazone bridge. Molecular docking studies revealed that these compounds interact effectively with the catalytic triad of the InhA enzyme (Y158, F149, and K165), suggesting their potential as InhA inhibitors.
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