Results 31 to 40 of about 34,010 (190)

Supra and subgingival application of antiseptics or antibiotics during periodontal therapy

open access: yesPeriodontology 2000, EarlyView., 2023
Abstract Periodontal diseases (gingivitis and periodontitis) are characterized by inflammatory processes which arise as a result of disruption of the balance in the oral ecosystem. According to the current S3 level clinical practice guidelines, therapy of patients with periodontitis involves a stepwise approach that includes the control of the patient ...
Elena Figuero   +5 more
wiley   +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

Synthesis and biological activity of methylated derivatives of the Pseudomonas metabolites HHQ, HQNO and PQS

open access: yesBeilstein Journal of Organic Chemistry, 2019
Selectively methylated analogues of naturally occurring 2-heptyl-4(1H)-quinolones, which are alkaloids common within the Rutaceae family and moreover are associated with quorum sensing and virulence of the human pathogen Pseudomonas aeruginosa, have been
Sven Thierbach   +3 more
doaj   +1 more source

Quorum Sensing: suatu Sistem Komunikasi Bakteri Fitopatogen, Peranannya pada Proses Infeksi, dan Peluangnya sebagai Basis Pengembangan Strategi Baru dalam Pengendalian Penyakit Tumbuhan [PDF]

open access: yes, 2009
Previously, it is thought that bacterium is an autonomous unicellular organism with no capacity for collective behavior. Now the paradigm has changed since there are communication between intercell bacteria.
Hadiwiyono, H. (Hadiwiyono)
core   +2 more sources

Nonclassical Biological Activities of Quinolone Derivatives

open access: yesJournal of Pharmacy & Pharmaceutical Sciences, 2011
Quinolones are considered as a big family of multi-faceted drugs; their chemical synthesis is flexible and can be easily adapted to prepare new congeners with rationally devised structures.
Mohsen Daneshtalab, Abeer Ahmed
doaj   +1 more source

Scalable total synthesis of (+)-aniduquinolone A and its acid-catalyzed rearrangement to aflaquinolones

open access: yesCommunications Chemistry, 2022
Quinolones can possess desirable antibacterial, antiviral and anticancer properties, rending them important synthetic targets for drug discovery purposes.
Feng-Wei Guo   +7 more
doaj   +1 more source

Docking studies on novel analogs of quinolones against DNA gyrase of Escherichia coli [PDF]

open access: yesJournal of Pharmacy & Pharmacognosy Research, 2018
Context: Bacterial resistance to antibiotics is the inevitable consequence of the use of antimicrobial agents. Thus, quinolones are an important class of antibacterials; these agents generally consist of a 1-subtituted-1,4-dihydro-4-oxopyridine-3 ...
Cristian Davila   +3 more
doaj  

Microwave assisted synthesis of 4-quinolones and N,N′-diarylureas

open access: yesGreen Processing and Synthesis, 2013
4-Quinolinones are an important class of alkaloids, widely used as conventional drugs to treat various infectious diseases. In this study, we report the synthesis of 4-quinolones in one step, under microwave irradiation and with diphenyl ether as a ...
Duarte Patricia D.   +2 more
doaj   +1 more source

Rapid assessment of the effect of ciprofloxacin on chromosomal DNA from using an in situ DNA fragmentation assay [PDF]

open access: yes, 2009
Background Fluoroquinolones are extensively used antibiotics that induce DNA double-strand breaks (DSBs) by trapping DNA gyrase and topoisomerase IV on DNA.
Gosalvez Jaime   +4 more
core   +1 more source

1,2-Substituted 4-(1H)-Quinolones: Synthesis, Antimalarial and Antitrypanosomal Activities in Vitro

open access: yesMolecules, 2014
A diverse array of 4-(1H)-quinolone derivatives bearing substituents at positions 1 and 2 were synthesized and evaluated for antiprotozoal activities against Plasmodium falciparum and Trypanosoma brucei rhodesiense, and cytotoxicity against L-6 cells in ...
Abraham Wube   +6 more
doaj   +1 more source

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