Results 21 to 30 of about 32,766 (293)

Diagnostic and prognostic significance of systemic alkyl quinolones for P. aeruginosa in cystic fibrosis: a longitudinal study [PDF]

open access: yes, 2016
Background Pulmonary P. aeruginosa infection is associated with poor outcomes in cystic fibrosis (CF) and early diagnosis is challenging, particularly in those who are unable to expectorate sputum. Specific P.
A. Clayton   +17 more
core   +2 more sources

Waltherione C and cleomiscosin from Melochia umbellata var. Degrabrata K. (Malvaceae), biosynthetic and chemotaxonomic significance [PDF]

open access: yes, 2014
Waltherione C, a 4-quinolinone secondary metabolite, and cleomiscosin have been isolated from Melochia umbellata (Malvaceae).A biosynthetic scheme incorporating the unique 4-pyridones and 4-quinolones isolated from Melochia and Waltheria spp.
Noor, Alfian, Soekamto, Nunuk H.
core   +1 more source

Aminoquinolones and Their Benzoquinone Dimer Hybrids as Modulators of Prion Protein Conversion

open access: yesMolecules, 2022
Prion Diseases or Transmissible Spongiform Encephalopathies are neurodegenerative conditions associated with a long incubation period and progressive clinical evolution, leading to death.
Amanda Rodrigues Pinto Costa   +8 more
doaj   +1 more source

Synthesis of New Fused Heterocyclic 2-Quinolones and 3-Alkanonyl-4-Hydroxy-2-Quinolones

open access: yesMolecules, 2019
Herein, we report the synthesis of 5,12-dihydropyrazino[2,3-c:5,6-c′]difuro[2,3-c:4,5-c′]-diquinoline-6,14(5H,12H)diones, 2-(4-hydroxy-2-oxo-1,2-dihydroquinolin-3-yl)-1,4-diphenyl- butane-1,4-diones and 4-(benzo-[d]oxazol-2-yl)-3-hydroxy-1H ...
Ashraf A. Aly   +7 more
doaj   +1 more source

Positive Association between the Use of Quinolones in Food Animals and the Prevalence of Fluoroquinolone Resistance in E. coli and K. pneumoniae, A. baumannii and P. aeruginosa: A Global Ecological Analysis

open access: yesAntibiotics, 2021
(1) Background: It is unclear what underpins the large global variations in the prevalence of fluoroquinolone resistance in Gram-negative bacteria. We tested the hypothesis that different intensities in the use of quinolones for food-animals play a role.
Chris Kenyon
doaj   +1 more source

Effect of efflux pump inhibition on Pseudomonas aeruginosa transcriptome and virulence [PDF]

open access: yes, 2017
Efflux pumps of the resistance-nodulation-cell-division (RND) family increase antibiotic resistance in many bacterial pathogens, representing candidate targets for the development of antibiotic adjuvants.
Baldelli, Valerio   +8 more
core   +2 more sources

ChemInform Abstract: 4‐Quinolone Fused Heterocyclic Ring Systems by Intramolecular Reactions of 4‐Quinolone‐2‐carboxamides. [PDF]

open access: yesChemInform, 2014
Abstract A versatile synthetic route to new 4-quinolone-based polycyclic systems is described. TFA-catalyzed intramolecular reaction of N-unsubstituted quinolone-2-carboxylic acid amides gives structurally diverse compounds, depending on the length of the chain.
R. Cincinelli   +3 more
openaire   +3 more sources

The bactericidal activity of moxifloxacin in patients with pulmonary tuberculosis [PDF]

open access: yes, 2003
Patients in whom acid-fast bacilli smear-positive pulmonary tuberculosis was newly diagnosed were randomized to receive 400 mg moxifloxacin, 300 mg isonaizid, or 600 mg rifampin daily for 5 days. Sixteen-hour overnight sputa collections were made for the
Bongard, E   +7 more
core   +1 more source

Metal Complexes of Quinolone Antibiotics and Their Applications: An Update

open access: yesMolecules, 2013
Quinolones are synthetic broad-spectrum antibiotics with good oral absorption and excellent bioavailability. Due to the chemical functions found on their nucleus (a carboxylic acid function at the 3-position, and in most cases a basic piperazinyl ring ...
Valentina Uivarosi
doaj   +1 more source

Biosynthetic flexibility of Pseudomonas aeruginosa leads to hydroxylated 2-alkylquinolones with proinflammatory host response

open access: yesCommunications Chemistry, 2023
The human pathogen Pseudomonas aeruginosa produces various 4(1H)-quinolones with diverse functions. Among these, 2-nonyl-4(1H)-quinolone (NQ) and its N-oxide (NQNO) belong to the main metabolites.
Viktoriia Savchenko   +4 more
doaj   +1 more source

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