Analysis of the loading and hydroxylation steps in lankamycin biosynthesis in Streptomyces rochei.

abstract：:During a 4-month period in late 1988, we isolated ceftazidime-resistant strains of Klebsiella pneumoniae and other members of the family Enterobacteriaceae from 29 patients at a chronic-care facility in Massachusetts. Ceftazidime resistance resulted from two distinct extended-spectrum beta-lactamases of the TEM type w...

journal_title：Antimicrobial agents and chemotherapy

authors： Rice LB,Willey SH,Papanicolaou GA,Medeiros AA,Eliopoulos GM,Moellering RC Jr,Jacoby GA

更新日期：1990-11-01 00:00:00

abstract：:Nemonoxacin (TG-873870) is a novel nonfluorinated quinolone with potent broad-spectrum activity against Gram-positive, Gram-negative, and atypical pathogens, including vancomycin-nonsusceptible methicillin-resistant Staphylococcus aureus (MRSA), quinolone-resistant MRSA, quinolone-resistant Streptococcus pneumoniae, p...

journal_title：Antimicrobial agents and chemotherapy

authors： Cao GY,Zhang J,Zhang YY,Guo BN,Yu JC,Wu XJ,Chen YC,Wu JF,Shi YG

更新日期：2014-10-01 00:00:00

abstract：:The aim of this study was to clarify the clarithromycin resistance mechanisms of β-lactamase-nonproducing ampicillin-resistant Haemophilus influenzae strains. In all clarithromycin-resistant strains, the transcript level of acrB was significantly elevated, and these strains had a frameshift mutation in acrR Introducti...

journal_title：Antimicrobial agents and chemotherapy

authors： Seyama S,Wajima T,Nakaminami H,Noguchi N

更新日期：2016-04-22 00:00:00

abstract：:The antiviral activity of a new series of thymidine analogs was determined against vaccinia virus (VV), cowpox virus (CV), herpes simplex virus, and varicella-zoster virus. Several compounds were identified that had good activity against each of the viruses, including a set of novel 5-substituted deoxyuridine analogs....

journal_title：Antimicrobial agents and chemotherapy

authors： Prichard MN,Keith KA,Johnson MP,Harden EA,McBrayer A,Luo M,Qiu S,Chattopadhyay D,Fan X,Torrence PF,Kern ER

更新日期：2007-05-01 00:00:00

abstract：:The time course of plasma drug levels and urinary recovery for two lipopeptide antifungal antibiotics, L-671,329 and cilofungin, were measured in male rhesus monkeys (Macaca mulatta) and in female DBA/2 mice. The antibiotics were administered intravenously at 10 mg/kg of body weight in phosphate-buffered saline-26% po...

journal_title：Antimicrobial agents and chemotherapy

authors： Sundelof JG,Hajdu R,Cleare WJ,Onishi J,Kropp H

更新日期：1992-03-01 00:00:00

abstract：:The prophylactic efficacy of 17C91, a carbamate prodrug of atovaquone (ATQ), was investigated in a severe combined immunodeficient mouse model of Pneumocystis carinii pneumonia (PCP). At an oral dosage equivalent to 100 mg of ATQ per kg of body weight per day, 17C91 protected 9 of 10 mice from PCP and had a prophylact...

journal_title：Antimicrobial agents and chemotherapy

authors： Comley JC,Yeates CL,Frend TJ

更新日期：1995-10-01 00:00:00

abstract：:There has been a resurgence of interest in aerosolization of antibiotics for treatment of patients with severe pneumonia caused by multidrug-resistant pathogens. A combination formulation of amikacin-fosfomycin is currently undergoing clinical testing although the exposure-response relationships of these drugs have no...

journal_title：Antimicrobial agents and chemotherapy

authors： Sime FB,Johnson A,Whalley S,Santoyo-Castelazo A,Montgomery AB,Walters KA,Lipman J,Hope WW,Roberts JA

更新日期：2016-12-27 00:00:00

abstract：:Drug repurposing affords the implementation of new treatments at a moderate cost and under a faster time-scale. Most of the clinical drugs against Leishmania share this origin. The antidepressant sertraline has been successfully assayed in a murine model of visceral leishmaniasis. Nevertheless, sertraline targets in L...

journal_title：Antimicrobial agents and chemotherapy

authors： Lima ML,Abengózar MA,Nácher-Vázquez M,Martínez-Alcázar MP,Barbas C,Tempone AG,López-Gonzálvez Á,Rivas L

更新日期：2018-11-26 00:00:00

abstract：:The high intrinsic penem resistance of Pseudomonas aeruginosa is due to the interplay among the outer membrane barrier, the active efflux system MexAB-OprM, and AmpC beta-lactamase. We studied the roles of two other efflux systems, MexCD-OprJ and MexXY-OprM, in penem resistance by overexpressing each system in an AmpC...

journal_title：Antimicrobial agents and chemotherapy

authors： Okamoto K,Gotoh N,Nishino T

更新日期：2002-08-01 00:00:00

abstract：:We investigated whether cells derived from the fetal central nervous system can support productive infection by a human immunodeficiency virus type 1 (HIV-1) isolate termed UHC-1, produced by a cellular clone derived from HIV-1 strain HIV-IIIB chronically infected U-937 promonocytic cells, and what the effect of nucle...

journal_title：Antimicrobial agents and chemotherapy

authors： Geleziunas R,Arts EJ,Boulerice F,Goldman H,Wainberg MA

更新日期：1993-06-01 00:00:00

abstract：:Analogues based on the insect cecropin-bee melittin hybrid peptide (CEME) were studied and analyzed for activity and salt resistance. The new variants were designed to have an increase in amphipathic alpha-helical content (CP29 and CP26) and in overall positive charge (CP26). The alpha-helicity of these peptides was d...

journal_title：Antimicrobial agents and chemotherapy

authors： Friedrich C,Scott MG,Karunaratne N,Yan H,Hancock RE

更新日期：1999-07-01 00:00:00

abstract：:Sch 22591 (5-episisomicin), gentamicin, sisomicin, and tobramycin were compared for their ability to protect mice from lethal intraperitoneal challenge with 12 Pseudomonas strains, all susceptible to each of the aminoglycosides (minimal inhibitory concentrations and minimal bactericidal concentrations were

journal_title：Antimicrobial agents and chemotherapy

authors： Goering RV,Sanders CC,Sanders WE Jr

更新日期：1978-12-01 00:00:00

abstract：:Cefamandole nafate, a new cephalosporin for parenteral use, was evaluated in vitro against 231 recent clinical isolates and in 12 patients. Cefamandole had activity equivalent to cefazolin against Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae. Cefamandole was more active than cephalothin or cefazo...

journal_title：Antimicrobial agents and chemotherapy

authors： Shemonsky NK,Carrizosa J,Levison ME

更新日期：1975-12-01 00:00:00

abstract：:The role of Ser-235 in the catalytic mechanism of the TEM-1 beta-lactamase has been explored by the study of a mutant enzyme in which Ser-235 has been substituted by alanine (Ala-235 mutant enzyme). A comparative kinetic analysis of both the wild-type and the Ala-235 TEM-1 enzymes revealed little effect of this substi...

journal_title：Antimicrobial agents and chemotherapy

authors： Imtiaz U,Manavathu EK,Lerner SA,Mobashery S

更新日期：1993-11-01 00:00:00

abstract：:To determine whether low concentrations of aminoglycosides in combination with penicillin could effectively kill enterococci in vitro, we tested penicillin (20 micrograms/ml) in combination with decreasing concentrations of either streptomycin (20, 10, 5, and 1 micrograms/ml) or gentamicin (5, 3, 1, and 0.5 micrograms...

journal_title：Antimicrobial agents and chemotherapy

authors： Matsumoto JY,Wilson WR,Wright AJ,Geraci JE,Washington JA 2nd

更新日期：1980-12-01 00:00:00

abstract：:A wide variety of prokaryotic and eukaryotic cells exhibit a multidrug resistance (MDR) phenotype, indicating that resistance to potentially toxic compounds is mediated by their active efflux from the cell. We have sought to determine whether resistance to azoles in some strains of Candida species may be due in part t...

journal_title：Antimicrobial agents and chemotherapy

authors： Clark FS,Parkinson T,Hitchcock CA,Gow NA

更新日期：1996-02-01 00:00:00

abstract：:The class C beta-lactamase of Citrobacter freundii GN346 is a typical cephalosporinase comprising 361 amino acids, and substitution of the glutamic acid at position 219 in the enzyme by lysine was previously shown to broaden its substrate spectrum to oxyimino beta-lactams (K. Tsukamoto, R. Ohno, and T. Sawai, J. Bacte...

journal_title：Antimicrobial agents and chemotherapy

authors： Nukaga M,Tsukamoto K,Yamaguchi H,Sawai T

更新日期：1994-06-01 00:00:00

abstract：:Human immunodeficiency virus type 1 (HIV-1) produces two polyproteins, Pr55(Gag) and Pr160(Gag-Pol), that are cleaved into mature functional subunits by the virally encoded protease. Drugs that inhibit this protease are an important part of anti-HIV therapy. We studied the ordered accumulation of Gag and Gag-Pol proce...

journal_title：Antimicrobial agents and chemotherapy

authors： Speck RR,Flexner C,Tian CJ,Yu XF

更新日期：2000-05-01 00:00:00

abstract：:Hepatitis C virus (HCV) NS3 protease inhibitors (PIs) are important components of novel HCV therapy regimens. Studies of PI resistance initially focused on genotype 1. Therefore, knowledge about the determinants of PI resistance for the highly prevalent genotypes 2 to 6 remains limited. Using Huh7.5 cell culture-infec...

journal_title：Antimicrobial agents and chemotherapy

authors： Serre SB,Jensen SB,Ghanem L,Humes DG,Ramirez S,Li YP,Krarup H,Bukh J,Gottwein JM

更新日期：2016-05-23 00:00:00

abstract：:The 50% inhibitory concentration (IC50s) of benflumetol (range, 12.5 to 240 nM; mean, 55.1 nM) for 158 Senegalese isolates were evaluated. Ten isolates (6%) showed decreased susceptibility to benflumetol. Benflumetol was slightly more potent against chloroquine-resistant isolates (P < 0.025). No correlation or weak co...

journal_title：Antimicrobial agents and chemotherapy

authors： Pradines B,Tall A,Fusai T,Spiegel A,Hienne R,Rogier C,Trape JF,Le Bras J,Parzy D

更新日期：1999-02-01 00:00:00

abstract：:Isolates of Aspergillus fumigatus that demonstrate resistance to itraconazole (ITZ) have been described previously; however, the prevalence and clinical significance of ITZ resistance are not completely understood. In this study we assessed the ITZ susceptibilities of 128 A. fumigatus isolates that caused invasive inf...

journal_title：Antimicrobial agents and chemotherapy

authors： Balajee SA,Weaver M,Imhof A,Gribskov J,Marr KA

更新日期：2004-04-01 00:00:00

abstract：:Cefmenoxime, an investigational semisynthetic cephalosporin, was evaluated in 18 pediatric patients with a variety of infections. There were seven patients with urinary tract infections, two with wound infections, two with osteomyelitis, two with abscess infections, one with cervical adenitis, one with hidradenitis, o...

journal_title：Antimicrobial agents and chemotherapy

authors： Tansino GF,Hammerschlag MR,Congeni BL,Cox PA,Doraiswamy B,duBouchet L

更新日期：1985-10-01 00:00:00

abstract：:Despite over 40 years of worldwide usage, relatively few data have been published on the pharmacokinetics of cefazolin in pediatric surgical patients. The primary objectives of this study were to examine the pharmacokinetics and safety of cefazolin in children 10 to 12 years of age (inclusive) receiving 1 or 2 g of ce...

journal_title：Antimicrobial agents and chemotherapy

authors： Schmitz ML,Blumer JL,Cetnarowski W,Rubino CM

更新日期：2015-07-01 00:00:00

abstract：:TEM-28 (pI 6.1), expressed by an Escherichia coli clinical isolate, is a novel beta-lactamase which hydrolyzed ceftazidime, cefotaxime, and aztreonam with rates of 25, 1.1, and 5.6, respectively, relative to that for benzylpenicillin (100). The nucleotide sequence of blaTEM-28 differed from that of blaTEM-1 by two bas...

journal_title：Antimicrobial agents and chemotherapy

authors： Bradford PA,Jacobus NV,Bhachech N,Bush K

更新日期：1996-01-01 00:00:00

abstract：:Echinocandins are recommended as the first-line drugs for the treatment of systemic candidiasis. Cas5 is a key transcription factor involved in the response to cell wall damage induced by echinocandins. In this study, through a genetic screen, we identified a second transcription factor, Efg1, that is also crucial for...

journal_title：Antimicrobial agents and chemotherapy

authors： Xiong K,Su C,Sun Q,Lu Y

更新日期：2021-01-20 00:00:00

abstract：:The in vitro antibacterial activity of AM-1155 against a wide variety of clinical isolates was compared with those of other fluoroquinolones. The MICs of AM-1155 for 90% of Staphylococcus aureus, Streptococcus pneumoniae, and Enterococcus faecalis isolates tested were 0.10, 0.39, and 0.78 microgram/ml, respectively. T...

journal_title：Antimicrobial agents and chemotherapy

authors： Wakabayashi E,Mitsuhashi S

更新日期：1994-03-01 00:00:00

abstract：:The pharmacokinetics of cefepime following administration of a single 2-g dose were evaluated for 12 adult patients with thermal burn injury and suspected or documented infection. Serial blood and urine samples for cefepime concentration determination were obtained for 24 h following drug administration. Serum and uri...

journal_title：Antimicrobial agents and chemotherapy

authors： Bonapace CR,White RL,Friedrich LV,Norcross ED,Bosso JA

更新日期：1999-12-01 00:00:00

abstract：:Hand-foot-and-mouth disease (HFMD), caused by enterovirus, is a threat to public health worldwide. To date, enterovirus 71 (EV71) has been one of the major causative agents of HFMD in the Pacific-Asia region, and outbreaks with EV71 cause millions of infections. However, no drug is currently available for clinical the...

journal_title：Antimicrobial agents and chemotherapy

authors： Wang Y,Cao L,Zhai Y,Yin Z,Sun Y,Shang L

更新日期：2017-06-27 00:00:00

abstract：:EDP-239, a novel hepatitis C virus (HCV) inhibitor targeting nonstructural protein 5A (NS5A), has been investigated in vitro and in vivo EDP-239 is a potent, selective inhibitor with potency at picomolar to nanomolar concentrations against HCV genotypes 1 through 6. In the presence of human serum, the potency of EDP-2...

journal_title：Antimicrobial agents and chemotherapy

authors： Owens CM,Brasher BB,Polemeropoulos A,Rhodin MH,McAllister N,Peng X,Wang C,Ying L,Cao H,Lawitz E,Poordad F,Rondon J,Box TD,Zeuzem S,Buggisch P,Lin K,Qiu YL,Jiang L,Colvin R,Or YS

更新日期：2016-09-23 00:00:00

abstract：:Previous studies have shown that the proton pump inhibitor omeprazole has antimalarial activity in vitro. The interactions of omeprazole with commonly used antimalarial drugs were assessed in vitro. Omeprazole and quinine combinations were synergistic; however, chloroquine and omeprazole combinations were antagonistic...

journal_title：Antimicrobial agents and chemotherapy

authors： Skinner-Adams T,Davis TM

更新日期：1999-05-01 00:00:00