Results 51 to 60 of about 71,327 (249)

Stereoretentive Nucleophilic Aromatic Substitution Accesses Atropisomeric 4‐Amino‐N‐Arylquinolinium Salts

Chemistry – A European Journal, EarlyView.
Quinolin‐4‐ones were converted to chloroquinolinium salts, allowing formation of axially chiral aminoquinolinium salts via an enantioretentive SNAr reaction with a variety of amine nucleophiles. The salts have a high rotational barrier, with a racemization half‐life of ∼1000s of years.
Darren Holmes, Nia Foster, Saima Ansari, Paul Kavanagh, Paul Dingwall, Peter C. Knipe   +5 more
wiley   +1 more source

Sub-inhibitory concentrations of vancomycin prevent quinolone-resistance in a penicillin-resistant isolate of Streptococcus pneumoniae [PDF]

, 2001
BACKGROUND: The continuous spread of penicillin-resistant pneumococci represents a permanent threat in the treatment of pneumococcal infections, especially when strains show additional resistance to quinolones.
Cottagnoud, M, Entenza, JM, Taüber, MG, Moreillon, P, Cottagnoud, P, Que, YA   +5 more
core   +1 more source

Biomass‐derived hydrochars as eco‐friendly adsorbents for wastewater treatment applications

Environmental Progress &Sustainable Energy, EarlyView.
Abstract Emerging organic pollutants (EOPs), such as diethyl phthalate (DEP), bisphenol A (BPA), and methylene blue (MB), are only partially removed in conventional wastewater treatment plants. This study assesses hydrochars produced by hydrothermal carbonization (HTC) of spruce bark (SB), vine shoots (VSs), and wheat straw (WSs) for removing three ...
Emanuel Gheorghita Armanu, Sara Ribeirinho‐Soares, Christian Eberlein, Hermann J. Heipieper, Irina Volf, Olga C. Nunes, Olívia Salomé G. P. Soares   +6 more
wiley   +1 more source

Quinolone resistance: much more than predicted [PDF]

, 2011
Since quinolones are synthetic antibiotics, it was predicted that mutations in target genes would be the only mechanism through which resistance could be acquired, because there will not be quinolone resistance genes in nature.
Jose L Martinez, Alvaro Hernández, Maria Blanca Sanchez, Alvaro eHernandez, María B. Sánchez, José L. Martínez   +5 more
core   +1 more source

Impact of Quinolone Prophylaxis on Spontaneous Bacterial Peritonitis and Mortality in Cirrhosis Patients: A Systematic Review and Meta‐Analysis of Randomized Controlled Trials

JGH Open
Background Cirrhosis is a major global health concern due to its progressive nature and high risk of complications, including spontaneous bacterial peritonitis (SBP), which significantly increases mortality. Quinolone antibiotics, especially norfloxacin,
Ajay Malvi, Nipun Verma, Mahalaqua Nazli Khatib, Subbulakshmi Ganesan, Mandeep Kaur, Manish Srivastava, Amit Barwal, G. V. Siva Prasad, Pranchal Rajput, Rukshar Syed, Kamal Kundra, Kratika Sharma, Diptismitha Jena, Frederick Sidney Correa, Abhinav Rathour, Ganesh Bushi, Rachana Mehta, Sanjit Sah, Prakasini Satapathy, Shilpa Gaidhane, Muhammed Shabil, Hashem Abu Serhan   +21 more
doaj   +1 more source

Prevalence and Characterization of Quinolone-Resistance Determinants in Escherichia coli Isolated from Food-Producing Animals and Animal-Derived Food in the Philippines

Antibiotics, 2021
Antimicrobial resistance to quinolones, which constitutes a threat to public health, has been increasing worldwide. In this study, we investigated the prevalence of quinolone-resistant determinants in Escherichia coli not susceptible to quinolones and ...
Lawrence Belotindos, Marvin Villanueva, Joel Miguel, Precious Bwalya, Tetsuya Harada, Ryuji Kawahara, Chie Nakajima, Claro Mingala, Yasuhiko Suzuki   +8 more
doaj   +1 more source

Genomic Insights Into Spatiotemporal Dynamics of Acquired Azithromycin Resistance Genes in Salmonella Strains Worldwide

Food Safety and Health, EarlyView.
ABSTRACT Azithromycin has been used for clinical invasive infections caused by fluoroquinolone‐ and third‐generation cephalosporin‐resistant Salmonella, and mass drug administration with azithromycin has been used to reduce under‐5 mortality in children in some countries.
Yuhang Pei, Mengqi Qu, Ziru Yang, Xuebin Xu, Yanan Wang   +4 more
wiley   +1 more source

Clinical Importance and Epidemiology of Quinolone Resistance [PDF]

, 2014
The quinolone class of antimicrobial agents is one of most widely used classes of antimicrobial agents in outpatient and inpatient treatment. However, quinolone resistance in gram-positive and gram-negative bacteria has emerged and increased globally ...
Kim, Eu Suk, Hooper, David, David C. Hooper, Eu Suk Kim   +3 more
core   +1 more source

Resistance pattern of enterobacteriaceae isolates from urinary tract infections to selected quinolones in Yaoundé

The Pan African Medical Journal, 2015
INTRODUCTION: it is estimated that 150 million urinary tract infections (UTIs) occur yearly worldwide, resulting in more than 6 billion dollar in direct healthcare cost.
Emilia Enjema Lyonga, Michel Toukam, Celine Nkenfou, Hortense Kamga Gonsu, Marie-Claire Okomo Assoumou, Martha Tongo Mesembe, Agnes Bedie Eyoh, George Mondinde Ikomey, Valantine Ngum Ndze, Sinata Koulla-Shiro   +9 more
doaj   +1 more source

Lanthanum triflate triggered synthesis of tetrahydroquinazolinone derivatives of N-allyl quinolone and their biological assessment [PDF]

Journal of the Serbian Chemical Society, 2012
A series of 24 derivatives of tetrahydroquinazolinone has been synthesized by one-pot cyclocondensation reaction of N-allyl quinolones, cyclic β-diketones and (thio)urea/N-phenylthiourea in presence of lanthanum triflate catalyst.
Jardosh Hardik H., Patel Manish P.
doaj   +1 more source