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A single outer-sphere amino-acid substitution turns on the NO reactivity of a hemerythrin-like protein.
Chem Sci
January 2025
Department of Chemical Physiology and Biochemistry, School of Medicine, Oregon Health & Science University 3181 SW Sam Jackson Park Road Portland Oregon 97239 USA
Mycobacterial hemerythrin-like proteins (HLPs) are important for the survival of pathogens in macrophages. Their molecular mechanisms of function remain poorly defined but recent studies point to their possible role in nitric oxide (NO) scavenging. Unlike any nonheme diiron protein studied so far, the diferric HLP from (-HLP) reacts with NO in a multistep fashion to consume four NO molecules per diiron center.
View Article and Find Full Text PDFPeptide nucleic acid-immobilised paper combined with multiplex recombinase polymerase amplification for the ultrasensitive and rapid detection of rifampicin-resistant tuberculosis.
Sci Rep
January 2025
Faculty of Allied Health Sciences, Center of Excellence for Innovative Diagnosis of Antimicrobial Resistance, Chulalongkorn University, Bangkok, 10330, Thailand.
Rifampicin-resistant tuberculosis (RR-TB) is a critical issue with significant implications for patient care, public health, and TB control efforts that necessitate comprehensive strategies for detection. This study presents a novel point-of-care diagnostic tool for RR-TB detection employing a peptide nucleic acid (PNA)-paper-based sensor combined with isothermal recombinase polymerase amplification (RPA). The sensor targets mutations in codons 516, 526, and 531 of the rpoB gene, the top three common mutations associated with rifampicin-resistant strains.
View Article and Find Full Text PDFOrchestrated immune responses to Mycobacterium marinum natural infection in tongue sole (Cynoglossus semilaevis).
Fish Shellfish Immunol
January 2025
State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao, Shandong, 266237, China. Electronic address:
Mycobacterium marinum is a major pathogen in aquaculture, posing a substantial threat to the health and sustainability of tongue sole (Cynoglossus semilaevis) farming. This study investigated the genetic basis of immune response in tongue sole by comparing transcriptome profiles of liver and spleen tissues from symptomatic (susceptible) and healthy (resistant) individuals during a natural M. marinum outbreak.
View Article and Find Full Text PDFGenetic variations underlying aminoglycoside resistance in antibiotic-induced Mycobacterium intracellulare mutants.
Infect Genet Evol
January 2025
Department of Microbiology, College of Medicine, Gyeongsang National University, Jinju, Republic of Korea; Department of Convergence of Medical Science, Gyeongsang National University, Jinju, Republic of Korea. Electronic address:
Mycobacterium avium complex (MAC) is an emerging pathogen leading to public health concerns in developing and developed countries, particularly among immunocompromised individuals and patients with structural lung diseases. Current clinical guidelines recommend combination antibiotic therapy for treating MAC pulmonary disease (MAC-PD). However, the rising prevalence of antibiotic resistance poses significant challenges, including treatment failure and clinical recurrence.
View Article and Find Full Text PDFInterferon (IFN)-gamma (γ) inducible protein 10 (IP-10) in the diagnosis of latent and active tuberculosis in Bacille Calmette Guerin (BCG)-vaccinated pediatric population.
PLoS One
January 2025
Regional Specialized Hospital of Tuberculosis, Lung Diseases, and Rehabilitation in Lodz, Lodz, Poland.
Background: Accurate diagnosis of tuberculosis (TB) in children continues to be challenging, primarily due to the low bacterial load characteristic of the disease and the obstacles in collecting sputum samples. Furthermore, detecting cases of latent Mycobacterium tuberculosis (M.tb) infection (LTBI) that have a high risk of progressing to active TB disease remains a significant diagnostic hurdle.
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