Results 61 to 70 of about 97,638 (260)

Fitness‐compensatory mutations in rifampicin‐resistant RNA polymerase [PDF]

Molecular Microbiology, 2012
SummaryMutations in rpoB (RNA polymerase β‐subunit) can cause high‐level resistance to rifampicin, an important first‐line drug against tuberculosis. Most rifampicin‐resistant (RifR) mutants selected in vitro have reduced fitness, and resistant clinical isolates of M. tuberculosis frequently carry multiple mutations in RNA polymerase genes.
Brandis, Gerrit, Wrande, Marie, Liljas, Lars, Hughes, Diarmaid   +3 more
openaire   +3 more sources

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

Virological outcomes of second-line protease inhibitor-based treatment for human immunodeficiency virus type 1 in a high-prevalence rural South African setting: a competing-risks prospective cohort analysis [PDF]

, 2017
Background. Second-line antiretroviral therapy (ART) based on ritonavir-boosted protease inhibitors (bPIs) represents the only available option after first-line failure for the majority of individuals living with human immunodeficiency virus (HIV ...
2LADY Study Group, Alexandra Calmy, Anne Derache, ANRS 12249 TasP Study Group, Collins Iwuji, Dami Collier, DART Virology Group and Trial Team, Deenan Pillay, EARNEST Trial Team, Francois Dabis, National Department of Health, National Department of Health, Nonhlanhla Okesola, PharmAccess African Studies to Evaluate Resistance (PASER), PharmAccess African Studies to Evaluate Resistance (PASER), Ravindra K. Gupta, SECOND-LINE, SECOND-LINE Study Group, Southern African Treatment and Resistance Network, TenoRes Study Group, Tulio de Oliveira, World Health Organization, World Health Organization   +22 more
core   +3 more sources

Mono-Rifampicin-Resistant Pulmonary Tuberculosis

Tuberculosis and Respiratory Diseases, 1999
Background : Rifampicin (RFP) is a key component of the antituberculous short-course chemotherapy. Usually the RFP resistant M.tuberculosis is also resistant to isoniazid (INH), so the RFP resistance is the marker of multi-drug resistant (MDR) tuberculosis. But unusual cases of mono-RFP-resistant tuberculosis have been recently reported with increasing
Tae Sun Shim, Ki Man Lee, Chae Man Lim, Sang Do Lee, Younsuck Koh, Woo Sung Kim, Dong Soon Kim, Won Dong Kim   +7 more
openaire   +1 more source

Discovery of H2 Receptor Antagonists as Colistin Enhancers by Targeting Acid Stress Response

Advanced Science, EarlyView.
This study identifies YqgB as a key target for restoring colistin susceptibility in mcr‐positive pathogens under acidic conditions by remodeling phospholipid composition and reducing LPS modification. Deep learning‐based screening reveals H2 receptor antagonists as novel colistin adjuvants. Further investigations indicate that ranitidine and famotidine
Jinju Cai, Mengping He, Jianya Luo, Shuang Zhou, Tengyue Zhang, Jianing Li, Zhiqiang Wang, Yuan Liu   +7 more
wiley   +1 more source

Inhibition of rifampicin‐resistant RNA synthesis by rifampicin—RNA polymerase complexes

FEBS Letters, 1974
Biochemical and electron microscopic evidence has shown that Escherichia coli RNA polymerase holoenzyme forms in vitro, in the absence of nucleoside triphosphates, a stable and specific complex with bacteriophage T7 DNA in the early promoter region of the chromosome [ 1,2].
openaire   +2 more sources

Plant‐Derived Melatonin Inhibits Bacterial Virulence via CpxA/R Two‐Component System

Advanced Science, EarlyView.
Plant‐derived melatonin is sensed by CpxAE48/T51, which inhibits the phosphorylation cascade transmission from CpxAH240 to CpxRD52, resulting in the inhibition of DNA‐binding capacity of CpxR and subsequent T3SS genes expression in Pst DC3000. ABSTRACT In defending against pathogens, plants deploy diverse secondary metabolites and signaling molecules ...
Jin‐Wei Wei, Wei Liu, Bili Cao, Dan Zhao, Chengqiang Wang, Xin Hou, Tangyuan Ning, Biao Gong   +7 more
wiley   +1 more source

Population pharmacokinetics of levofloxacin in breastmilk in patients with rifampicin‐resistant tuberculosis

British Journal of Clinical Pharmacology, EarlyView.
Levofloxacin is a widely used antibiotic included in rifampicin‐resistant tuberculosis (RR‐TB) treatment. Data describing levofloxacin concentrations in breastmilk and infant exposure are limited. We analysed data from two South African studies of breastfeeding women receiving levofloxacin (750–1000 mg daily) for RR‐TB.
Sharon Sawe, Lufina Tsirizani, Buyisile Mkhize, Lubbe Wiesner, Gary Maartens, Francesca Conradie, Richard Court, Marian Loveday, Catriona Waitt, Paolo Denti   +9 more
wiley   +1 more source

Antimicrobial resistance profile of methicillin resistant staphylococcal aureus from skin and soft tissue isolates [PDF]

, 2009
OBJECTIVES: To evaluate resistance rates in methicillin resistant Staphylococcus aureus (MRSA) against clindamycin, cotrimoxazole, tetracycline, fusidic acid, rifampicin and chloramphenicol isolated from skin and soft tissue infections (SSTI).
Idrees, Faiza, Jabeen, Kauser, Khan, Muhammad Shoaib, Zafar, Afia   +3 more
core   +1 more source

Compounding Effects of Climate Warming and Antibiotic Resistance. [PDF]

, 2020
Bacteria have evolved diverse mechanisms to survive environments with antibiotics. Temperature is both a key factor that affects the survival of bacteria in the presence of antibiotics and an environmental trait that is drastically increasing due to ...
Cruz-Loya, Mauricio, Lozano-Huntelman, Natalie, Rodríguez-Verdugo, Alejandra, Savage, Van, Yeh, Pamela   +4 more
core   +1 more source