In vitro selection and characterization of Bacillus anthracis mutants with high-level resistance to ciprofloxacin.

abstract：:Acyclovir [9-(2-hydroxyethoxymethyl)guanine] (ACV), a potent antiviral compound, was phosphorylated to the same extent by extracts from untreated and iododeoxyuridine-treated Epstein-Barr virus-containing latent D98/HR-1 somatic hybrid cells. ATP was the preferred phosphate donor over other nucleoside triphosphates. T...

journal_title：Antimicrobial agents and chemotherapy

authors： Datta AK,Pagano JS

更新日期：1983-07-01 00:00:00

abstract：:Isavuconazole, the active moiety of the prodrug isavuconazonium sulfate, has potent activity against a wide spectrum of fungal pathogens and is approved for the treatment of invasive aspergillosis, yet little is known about the tissue penetration of isavuconazole at the target sites of infection. Here, we explored the...

journal_title：Antimicrobial agents and chemotherapy

authors： Lee A,Prideaux B,Lee MH,Zimmerman M,Dolgov E,Perlin DS,Zhao Y

更新日期：2019-05-24 00:00:00

abstract：:β-Lactam antibiotics that inhibit penicillin-binding proteins (PBPs) have been widely used in the treatment of bacterial infections. However, the molecular basis underlying the different inhibitory potencies of β-lactams against specific PBPs is not fully understood. Here, we present the crystal structures of penicill...

journal_title：Antimicrobial agents and chemotherapy

authors： Jeong JH,Cha HJ,Kim YG

更新日期：2018-08-27 00:00:00

abstract：:Doxycycline is reported to impair second-generation parasite schizogony. The effects of doxycycline alone and combined with dihydroartemisinin were investigated in a murine malaria model. Doxycycline lowered the rate of parasite growth within 2 days, with maximum effect in 6 days. Addition of dihydroartemisinin led to...

journal_title：Antimicrobial agents and chemotherapy

authors： Batty KT,Law AS,Stirling V,Moore BR

更新日期：2007-12-01 00:00:00

abstract：:Pseudomonas aeruginosa AH, isolated in Ankara, Turkey, was highly resistant to ceftazidime (MIC, 128 microg/ml) and produced a beta-lactamase that gave a doublet of bands at pIs 8.7 and 8.9. beta-Lactamase production was transferable to P. aeruginosa PU21 by conjugation and was determined by a ca. 450-kb plasmid, pMLH...

journal_title：Antimicrobial agents and chemotherapy

authors： Danel F,Hall LM,Gur D,Livermore DM

更新日期：1997-04-01 00:00:00

abstract：:Ribonucleic acid (RNA) synthesis in the sorbitol-dependent, fragile yeast mutant VY1160 (Venkov et al., 1974) is rapidly inhibited by rifampin. The growth of the mutant cells and protein synthesis are more slowly affected by the antibiotic, apparently as secondary phenomena. Lower doses of rifampin (50 to 100 mug/ml) ...

journal_title：Antimicrobial agents and chemotherapy

authors： Venkov PV,Milchev GI,Hadjiolov AA

更新日期：1975-12-01 00:00:00

abstract：:Antimicrobial resistance (AMR) is an ever-growing public health problem worldwide. The low rate of antibiotic discovery coupled with the rapid spread of drug-resistant bacterial pathogens is causing a global health crisis. To facilitate the drug discovery processes, we present a large-scale study of reference antibiot...

journal_title：Antimicrobial agents and chemotherapy

authors： O'Rourke A,Beyhan S,Choi Y,Morales P,Chan AP,Espinoza JL,Dupont CL,Meyer KJ,Spoering A,Lewis K,Nierman WC,Nelson KE

更新日期：2020-02-21 00:00:00

abstract：:The in vitro and in vivo activities of a mixture of six oleane triterpene saponins, recovered from the methanolic extract of the leaves of the Vietnamese plant Maesa balansae (PX-6518), were evaluated against drug-sensitive visceral Leishmania strains. The in vitro 50% inhibitory concentration (IC(50)) against intrace...

journal_title：Antimicrobial agents and chemotherapy

authors： Maes L,Vanden Berghe D,Germonprez N,Quirijnen L,Cos P,De Kimpe N,Van Puyvelde L

更新日期：2004-01-01 00:00:00

abstract：:Acute pulmonary exacerbations (APE) involving Pseudomonas aeruginosa are associated with increased morbidity and mortality in cystic fibrosis (CF) patients. Drug resistance is a significant challenge to treatment. Ceftazidime-avibactam (CZA) demonstrates excellent in vitro activity against isolates recovered from CF p...

journal_title：Antimicrobial agents and chemotherapy

authors： Bensman TJ,Wang J,Jayne J,Fukushima L,Rao AP,D'Argenio DZ,Beringer PM

更新日期：2017-09-22 00:00:00

abstract：:Spider venoms are vast natural pharmacopoeias selected by evolution. The venom of the ant spider Lachesana tarabaevi contains a wide variety of antimicrobial peptides. We tested six of them (latarcins 1, 2a, 3a, 4b, 5, and cytoinsectotoxin 1a) for their ability to suppress Chlamydia trachomatis infection. HEK293 cells...

journal_title：Antimicrobial agents and chemotherapy

authors： Lazarev VN,Polina NF,Shkarupeta MM,Kostrjukova ES,Vassilevski AA,Kozlov SA,Grishin EV,Govorun VM

更新日期：2011-11-01 00:00:00

abstract：:Meglumine antimonate (Glucantime), a drug of choice for the treatment of leishmaniasis, is produced by the reaction of pentavalent antimony with N-methyl-D-glucamine, a carbohydrate derivative. We investigated the structure and composition of meglumine antimonate, which remain poorly understood, despite 50 years of us...

journal_title：Antimicrobial agents and chemotherapy

authors： Roberts WL,McMurray WJ,Rainey PM

更新日期：1998-05-01 00:00:00

abstract：:An important determinant of nephrotoxicity, which is the major complication of long-term amphotericin B treatment, is dysfunction of distal tubular epithelial cells. The underlying cause for this rather selective damage to the cells is unknown. In the present investigation, it was shown that kidney epithelial cells we...

journal_title：Antimicrobial agents and chemotherapy

authors： Walev I,Bhakdi S

更新日期：1996-05-01 00:00:00

abstract：:Antimicrobial peptides (AMPs) are effective antibiotic agents commonly found in plants, animals, and microorganisms, and they have been suggested as the future of antimicrobial chemotherapies. It is vital to understand the molecular details that define the mechanism of action of resistance to AMPs for a rational plann...

journal_title：Antimicrobial agents and chemotherapy

authors： Maria-Neto S,Cândido Ede S,Rodrigues DR,de Sousa DA,da Silva EM,de Moraes LM,Otero-Gonzalez Ade J,Magalhães BS,Dias SC,Franco OL

更新日期：2012-04-01 00:00:00

abstract：:Currently, CTX-M β-lactamases are among the most prevalent and most heterogeneous extended-spectrum β-lactamases (ESBLs). In general, CTX-M enzymes are susceptible to inhibition by β-lactamase inhibitors. However, it is unknown if the pathway to inhibition by β-lactamase inhibitors for CTX-M ESBLs is similar to TEM an...

journal_title：Antimicrobial agents and chemotherapy

authors： Bethel CR,Taracila M,Shyr T,Thomson JM,Distler AM,Hujer KM,Hujer AM,Endimiani A,Papp-Wallace K,Bonnet R,Bonomo RA

更新日期：2011-07-01 00:00:00

abstract：:Novel penem molecules with heterocycle substitutions at the 6 position via a methylidene linkage were investigated for their activities and efficacy as beta-lactamase inhibitors. The concentrations of these molecules that resulted in 50% inhibition of enzyme activity were 0.4 to 3.1 nM for the TEM-1 enzyme, 7.8 to 72 ...

journal_title：Antimicrobial agents and chemotherapy

authors： Weiss WJ,Petersen PJ,Murphy TM,Tardio L,Yang Y,Bradford PA,Venkatesan AM,Abe T,Isoda T,Mihira A,Ushirogochi H,Takasake T,Projan S,O'Connell J,Mansour TS

更新日期：2004-12-01 00:00:00

abstract：:A mouse model of cystitis caused by uropathogenic Escherichia coli was used to study the distribution of gallium in bladder tissue following oral administration of gallium maltolate during urinary tract infection. The median concentration of gallium in homogenized bladder tissue from infected mice was 1.93 μg/g after ...

journal_title：Antimicrobial agents and chemotherapy

authors： Ball KR,Sampieri F,Chirino M,Hamilton DL,Blyth RI,Sham TK,Dowling PM,Thompson J

更新日期：2013-11-01 00:00:00

abstract：:Resistance to macrolides and ketolides occurs mainly via alterations in RNA moieties of the drug-binding site. Using an A2058G mutant of Mycobacterium smegmatis, additional telithromycin resistance was acquired via deletion of 15 residues from protein L22. Molecular modeling, based on the crystal structure of the larg...

journal_title：Antimicrobial agents and chemotherapy

authors： Berisio R,Corti N,Pfister P,Yonath A,Böttger EC

更新日期：2006-11-01 00:00:00

abstract：:Two clinical isolates of extended-spectrum beta-lactamase (ESBL)-producing Klebsiella pneumoniae were noted to be less susceptible than expected to imipenem. Both were missing outer membrane proteins that serve as channels for antibiotic entry. The role of beta-lactamase in resistance was investigated by eliminating t...

journal_title：Antimicrobial agents and chemotherapy

authors： Martínez-Martínez L,Pascual A,Hernández-Allés S,Alvarez-Díaz D,Suárez AI,Tran J,Benedí VJ,Jacoby GA

更新日期：1999-07-01 00:00:00

abstract：:Small unilamellar amphotericin B liposomes can reduce the toxicity of amphotericin B. In this study, we compared the physical, antifungal, pharmocokinetic, and toxic properties of two liposomal amphotericin B products, AmBisome and Anfogen, that have the same chemical composition but are manufactured differently. In v...

journal_title：Antimicrobial agents and chemotherapy

authors： Olson JA,Adler-Moore JP,Jensen GM,Schwartz J,Dignani MC,Proffitt RT

更新日期：2008-01-01 00:00:00

abstract：:Ceftibuten (CFB), a new broad-spectrum cephalosporin for oral administration, possesses potent activity in vitro against a wide range of gram-negative and certain gram-positive pathogens frequently encountered in pediatric patients. Its antimicrobial spectrum and dosage formulation suggest a use for CFB in the treatme...

journal_title：Antimicrobial agents and chemotherapy

authors： Kearns GL,Reed MD,Jacobs RF,Ardite M,Yogev RD,Blumer JL

更新日期：1991-10-01 00:00:00

abstract：:A survey carried out in 2005 among members of a healthy population of children living in Bolivia and Peru revealed that fecal carriage of Escherichia coli strains resistant to expanded-spectrum cephalosporins was remarkably increased compared to that observed in the same settings in 2002 (1.7% in 2005 versus 0.1% in 2...

journal_title：Antimicrobial agents and chemotherapy

authors： Pallecchi L,Bartoloni A,Fiorelli C,Mantella A,Di Maggio T,Gamboa H,Gotuzzo E,Kronvall G,Paradisi F,Rossolini GM

更新日期：2007-08-01 00:00:00

abstract：:Mutations in liaFSR, a three-component regulatory system controlling cell-envelope stress response, were recently linked with the emergence of daptomycin (DAP) resistance in enterococci. Our previous work showed that a liaF mutation increased the DAP MIC of a vancomycin-resistant Enterococcus faecalis strain from 1 to...

journal_title：Antimicrobial agents and chemotherapy

authors： Munita JM,Panesso D,Diaz L,Tran TT,Reyes J,Wanger A,Murray BE,Arias CA

更新日期：2012-08-01 00:00:00

abstract：:The iron-chelating drug deferoxamine (DFO) has been shown to be active in animal models of Pneumocystis carinii pneumonia (PCP), with effective daily intraperitoneal bolus dosages being 400 and 1,000 mg of DFO mesylate kg of body weight-1 in mouse and rat models, respectively. Continuous infusion produced a moderately...

journal_title：Antimicrobial agents and chemotherapy

authors： Merali S,Chin K,Del Angel L,Grady RW,Armstrong M,Clarkson AB Jr

更新日期：1995-09-01 00:00:00

abstract：:To date, the majority of pharmacokinetic/pharmacodynamic (PK/PD) discussions have focused on PK/PD relationships evaluated at steady-state drug concentrations. However, a concern with reliance upon steady-state drug concentrations is that it ignores events occurring while the pathogen is exposed to intermittent subopt...

journal_title：Antimicrobial agents and chemotherapy

authors： Martinez MN,Papich MG,Drusano GL

更新日期：2012-06-01 00:00:00

abstract：:The continued evolution of bacterial resistance to the β-lactam class of antibiotics has necessitated countermeasures to ensure continued effectiveness in the treatment of infections caused by bacterial pathogens. One relatively successful approach has been the development of new β-lactam analogs with advantages over ...

journal_title：Antimicrobial agents and chemotherapy

authors： Cotroneo N,Rubio A,Critchley IA,Pillar C,Pucci MJ

更新日期：2020-07-22 00:00:00

abstract：:Infections caused by carbapenem-resistant KPC-producing Klebsiella pneumoniae are responsible for high rates of mortality and represent a major therapeutic challenge, especially when the isolates are also resistant to colistin. We used the checkerboard method to evaluate the synergistic activity of 10 antibiotic combi...

journal_title：Antimicrobial agents and chemotherapy

authors： Tascini C,Tagliaferri E,Giani T,Leonildi A,Flammini S,Casini B,Lewis R,Ferranti S,Rossolini GM,Menichetti F

更新日期：2013-08-01 00:00:00

abstract：:We describe the pharmacokinetics of raltegravir of a preterm newborn after short-course treatment of the mother tested HIV + the day of delivery. At age 1 month, the circulating concentration of raltegravir in the newborn was 29 ng/ml (the IC95 of RAL against HIV-1 is 15 ng/ml). Raltegravir should therefore be conside...

journal_title：Antimicrobial agents and chemotherapy

authors： Clavel-Osorio C,Cazassus F,Stegmann S,Huc-Anaïs P,Lecam D,Peytavin G

更新日期：2013-12-01 00:00:00

abstract：:Escherichia coli K-12 cells grown in 1 to 5 mM sodium salicylate (SAL) or acetylsalicylate show increased phenotypic resistance to various antibiotics (J. L. Rosner, Proc. Natl. Acad. Sci. USA 82:8771-8774, 1985), including cephalosporins (this study). To determine whether these effects are caused by a decreased uptak...

journal_title：Antimicrobial agents and chemotherapy

authors： Foulds J,Murray DM,Chai T,Rosner JL

更新日期：1989-04-01 00:00:00

abstract：:A strain of Escherichia coli containing TEM-1 and CTX-M-1 was tested in an in vitro pharmacokinetic model against ceftazidime with and without AM-112, a serine beta-lactamase inhibitor. Ceftazidime alone was less effective than ceftazidime plus AM-112, and a single dose was more effective than three fractionated doses...

journal_title：Antimicrobial agents and chemotherapy

authors： Bowker KE,Noel AR,Walsh TR,Rogers CA,MacGowan AP

更新日期：2004-11-01 00:00:00

abstract：:Treating high-density bacterial infections is a challenging clinical problem. We have a paucity of new agents that can address this problem. Pseudomonas aeruginosa is a particularly difficult pathogen to treat effectively because of the plethora of resistance mechanisms it carries. Fosfomycin is an agent discovered ci...

journal_title：Antimicrobial agents and chemotherapy

authors： Drusano GL,Neely MN,Yamada WM,Duncanson B,Brown D,Maynard M,Vicchiarelli M,Louie A

更新日期：2018-11-26 00:00:00