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Brucellosis, caused by a facultative intracellular gram-negative coccobacillus, is one of the most common zoonotic infections worldwide. Very rarely, brucellosis can cause periprosthetic joint infections (PJI). In this case-based literature review, we summarize the current medical literature regarding Brucella PJI, with the aim to raise awareness among clinicians, particularly in non-endemic areas.
View Article and Find Full Text PDFNon-Tuberculous Mycobacterial Infection in AIDS Patients: A Detailed Description of 4 Cases, Including Histopathological Finding.
Rev Med Chil
September 2024
Laboratorio Biología Molecular, Hospital Base de Valdivia, Valdivia, Chile.
Unlabelled: Non tuberculous mycobacteria (NTM) are important opportunistic infection in patients with AIDS.
Aim: To present 4 cases of disseminated infections by NTM in patients with AIDS.
Results: These cases were associated with prolonged symptoms of fever, weight loss, diarrhea or cough, with hepatosplenomegaly, anemia and thrombocytopenia.
Fitness costs of Mycobacterium tuberculosis resistant to rifampicin is compensated by rapid Th2 polarization mediated by early and high IL-4 production during mice infection.
Sci Rep
January 2025
Experimental Pathology Department, National Institute of Medical Sciences and Nutrition Salvador Zubiran, Mexico City, Mexico.
It was a general belief that drug resistance in Mycobacterium tuberculosis (Mtb) was associated with lesser virulence, particularly rifampicin resistance, which is usually produced by mutations in the RNA polymerase Beta subunit (RpoB). Interestingly, this kind of bacterial mutations affect gene transcription with significant effects on bacterial physiology and metabolism, affecting also the bacterial antigenic constitution that in consequence can produce diverse immune responses and disease outcome. In the present study, we show the results of the Mtb clinical isolate A96, which is resistant to rifampicin and when used to infect BALB/c mice showed hypervirulence, apparently by rapidly polarization of the Th2 immune response through early and high production of IL-4.
View Article and Find Full Text PDFCase report of neurobrucellosis: a rare complication and neuroimaging findings of a common disease.
Front Immunol
January 2025
Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Background And Objective: Neurobrucellosis is a rare neurological disorder characterized by diverse clinical manifestations. Although several relevant cases were reported, our understanding of this disorder is limited. In this study, we presented the clinical and imaging characteristics of four cases of neurobrucellosis.
View Article and Find Full Text PDFDevelopment and validation of an LC-MS/MS multiplex assay for the quantification of bedaquiline, n-desmethyl bedaquiline, linezolid, levofloxacin, and clofazimine in dried blood spots.
J Chromatogr B Analyt Technol Biomed Life Sci
January 2025
Dried blood spot (DBS) assays to quantify novel and repurposed drugs for the treatment of rifampicin-resistant tuberculosis (RR-TB) would facilitate pharmacokinetic studies and therapeutic drug monitoring in low-middle income settings, considering their ease of application and simple sample storage requirements. We describe a DBS method for the simultaneous quantification of bedaquiline and metabolite N-desmethyl bedaquiline, linezolid, levofloxacin, and clofazimine. The analytes were extracted from the matrix and isolated by solid-phase extraction.
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