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http://dx.doi.org/10.1007/s12288-019-01249-9 | DOI Listing |
Under stress, bacteria display selective growth propensities on solid and liquid media. For Mycobacterium tuberculosis (Mtb), differentially culturable bacteria have been found in tuberculosis (TB) patient sputa. We hypothesized that antibiotic treatment can induce selective culturability in Mtb.
View Article and Find Full Text PDFSci 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 PDFJ Tissue Eng
January 2025
Engineering Research Center of Pulmonary and Critical Care Medicine Technology and Device (Ministry of Education), Tianjin Institutes of Health Science, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China.
The development of advanced models for assessing liver toxicity and drug responses is crucial for personalized medicine and preclinical drug development. 3D bioprinting technology provides opportunities to create human liver models that are suitable for conducting high-throughput screening for liver toxicity. In this study, we fabricated a humanized liver model using human-induced hepatocytes (hiHeps) derived from human fibroblasts via a rapid and efficient reprogramming process.
View Article and Find Full Text PDFAntimicrob Agents Chemother
January 2025
Rocky Mountain Regional VA Medical Center, Aurora, Colorado, USA.
A major challenge in tuberculosis (TB) therapeutics is that antibiotic exposure leads to changes in the physiology of (), which may enable the pathogen to withstand treatment. While antibiotic-treated has been evaluated in experiments it is unclear if and how long-term treatment with diverse antibiotics with varying treatment-shortening activity (sterilizing activity) affects physiologic processes differently. Here, we used SEARCH-TB, a pathogen-targeted RNA-sequencing platform, to characterize the transcriptome in the BALB/c high-dose aerosol infection mouse model following 4 weeks of treatment with three sterilizing and three non-sterilizing antibiotics.
View Article and Find Full Text PDFJ Infect Dev Ctries
November 2024
Clinic for Cardiology, University Clinical Center of Serbia, Koste Todorovića 8, 11000, Belgrade, Serbia.
Introduction: Brucellosis is one of the most common zoonotic infections in the world. Cardiac complications of the disease are usually in the form of endocarditis, and, to a lesser extent, in the form of myopericarditis.
Case: We report the case of a 34-year-old female admitted with signs of fever, nausea, and headache.
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