Rapid viral expansion and short drug half-life explain the incomplete effectiveness of current herpes simplex virus 2-directed antiviral agents.

abstract：:We characterized the stability of a plasmid pCP53-mcr1_3 encoding mcr-1 and mcr-3.19 with and without colistin exposure during cultural passages via S1-pulsed-field gel electrophoresis (PFGE) and nanopore MinION sequencing. Both mcr-1 and mcr-3.19 were missing in certain subclones, mediated by genetic excision (ISApl1...

journal_title：Antimicrobial agents and chemotherapy

authors： Zhang P,Bai L,Li Y,Wang Z,Li R

更新日期：2019-08-23 00:00:00

abstract：:We assessed the population pharmacokinetics of high-dose continuous-infusion (HDCI) meropenem in a cohort of patients with Klebsiella pneumoniae carbapenemase (KPC)-producing Klebsiella pneumoniae (KPC-Kp) infections. Monte Carlo simulations were used to define the permissible HDCI meropenem regimens that could be saf...

journal_title：Antimicrobial agents and chemotherapy

authors： Cojutti P,Sartor A,Righi E,Scarparo C,Bassetti M,Pea F

更新日期：2017-09-22 00:00:00

abstract：:Zika virus (ZIKV), a flavivirus transmitted by mosquitoes, was an almost neglected pathogen until its introduction in the Americas in 2015 and its subsequent explosive spread throughout the continent, where it has infected millions of people. The virus has caused social and sanitary alarm, mainly due to its associatio...

journal_title：Antimicrobial agents and chemotherapy

authors： Saiz JC,Martín-Acebes MA

更新日期：2017-05-24 00:00:00

abstract：:A mutant (TX5127) of Enterococcus faecalis OG1RF was generated by disruption mutagenesis of a previously described autolysin gene. TX5127 formed longer chains (2 to 10 cells per chain) than wild-type OG1RF (mainly single cells) during growth in broth even though it had a growth rate similar to that of the parental str...

journal_title：Antimicrobial agents and chemotherapy

authors： Qin X,Singh KV,Xu Y,Weinstock GM,Murray BE

更新日期：1998-11-01 00:00:00

abstract：:When developing novel microbicide products for the prevention of HIV infection, the preclinical safety program must evaluate not only the active pharmaceutical ingredient but also the product itself. To that end, we applied several relatively standard toxicology study methodologies to female sheep, incorporating an as...

journal_title：Antimicrobial agents and chemotherapy

authors： Holt JD,Cameron D,Dias N,Holding J,Muntendam A,Oostebring F,Dreier P,Rohan L,Nuttall J

更新日期：2015-07-01 00:00:00

abstract：:We found a heterozygous C2857T mutation (R953C) in polymerase gamma (Pol-γ) in an HIV-infected patient with mitochondrial toxicity. The R953C Pol-γ mutant binding affinity for dCTP is 8-fold less than that of the wild type. The R953C mutant shows a 4-fold decrease in discrimination of analog nucleotides relative to th...

journal_title：Antimicrobial agents and chemotherapy

authors： Li M,Mislak AC,Foli Y,Agbosu E,Bose V,Bhandari S,Szymanski MR,Shumate CK,Yin YW,Anderson KS,Paintsil E

更新日期：2016-08-22 00:00:00

abstract：:The 2-amino-5-halo-pyrimidinones, which are potent interferon inducers and antiviral agents, were found to be protective against lethal cytomegalovirus (CMV) challenge in weanling or neonatal mice when administered before virus challenge. This protection was dependent upon the dosage of pyrimidinone administered. Wean...

journal_title：Antimicrobial agents and chemotherapy

authors： Brideau RJ,Wolcott JA

更新日期：1985-10-01 00:00:00

abstract：:Growth of Mycoplasma pneumoniae was completely prevented by 0.06 mug of actinomycin D/ml, and 0.00375 mug/ml caused 90% inhibition. It thus appears that M. pneumoniae is more susceptible to actinomycin D than previously reported. Low concentrations (0.019 mug/ml) of the antibiotic primarily inhibited ribonucleic acid ...

journal_title：Antimicrobial agents and chemotherapy

authors： Fletcher RD,Jayavasu C,Yoo S,Albertson JN

更新日期：1973-09-01 00:00:00

abstract：:To evaluate the exposure-response relationships for efficacy and safety of voriconazole and anidulafungin in adult patients with invasive aspergillosis (IA), a population pharmacokinetic-pharmacodynamic (PK-PD) analysis was performed with data from a phase 3, prospective, double-blind, comparative study evaluating vor...

journal_title：Antimicrobial agents and chemotherapy

authors： Liu P,Mould DR

更新日期：2014-08-01 00:00:00

abstract：:Two patients (patients A and B) infected with Salmonella typhimurium failed ciprofloxacin therapy, and the posttherapy isolates had reduced susceptibilities to quinolones; 6 of 11 isolates from patient B were also cross-resistant to chemically unrelated agents. No transferable resistance, chloramphenicol-acetylating e...

journal_title：Antimicrobial agents and chemotherapy

authors： Piddock LJ,Griggs DJ,Hall MC,Jin YF

更新日期：1993-04-01 00:00:00

abstract：:Candida parapsilosis isolates occasionally display resistance in vitro to echinocandins and cause breakthrough infections to echinocandins. The degree of the in vivo cross-resistance among echinocandins and the fitness loss associated with caspofungin (CAS) resistance of C. parapsilosis are not well studied. We compar...

journal_title：Antimicrobial agents and chemotherapy

authors： Dimopoulou D,Hamilos G,Tzardi M,Lewis RE,Samonis G,Kontoyiannis DP

更新日期：2014-01-01 00:00:00

abstract：:The intestinal elimination of ciprofloxacin in the large bowel was studied in a rabbit model. Segments from the cecum, colon, and sigmoid colon along with their intact blood vessels were isolated and perfused, and their contents were collected over a 90-min period following the administration of a single parenteral do...

journal_title：Antimicrobial agents and chemotherapy

authors： Ramon J,Dautrey S,Farinoti R,Carbon C,Rubinstein E

更新日期：1996-01-01 00:00:00

abstract：:The physiological factors that contribute to Mycobacterium abscessus lung infections remain unclear. We determined whether antibiotic treatment targeting a major cystic fibrosis pathogen (i.e., Pseudomonas aeruginosa) could provide the ideal conditions for the establishment of M. abscessus infection. Our data showed t...

journal_title：Antimicrobial agents and chemotherapy

authors： Rodríguez-Sevilla G,Crabbé A,García-Coca M,Aguilera-Correa JJ,Esteban J,Pérez-Jorge C

更新日期：2019-10-22 00:00:00

abstract：:Six tetraoxanes had 50% inhibitory concentrations in the range of 10 to 100 ng/ml against Plasmodium falciparum, whereas the corresponding hexaoxonanes had minimal antimalarial activity. The lack of iron-mediated reactivity of the hexaoxonanes may explain their low activity compared to the tetraoxanes, the latter of w...

journal_title：Antimicrobial agents and chemotherapy

authors： Dong Y,Creek D,Chollet J,Matile H,Charman SA,Wittlin S,Wood JK,Vennerstrom JL

更新日期：2007-08-01 00:00:00

abstract：:We evaluated the combination of posaconazole with amphotericin B in vitro and in a murine model of systemic infections caused by Sporothrix brasiliensis and Sporothrix schenckii sensu stricto. In vitro data demonstrated a synergistic effect, and although posaconazole alone was effective against sporotrichosis, efficac...

journal_title：Antimicrobial agents and chemotherapy

authors： Mario DN,Guarro J,Santurio JM,Alves SH,Capilla J

更新日期：2015-08-01 00:00:00

abstract：:The in vitro susceptibilities of 11 strains of Chlamydia pneumoniae to azithromycin, clarithromycin, erythromycin, L-oflaxacin, and doxycycline were determined. Clarithromycin was the most active agent tested, with an MIC for 90% of strains and minimal chlamydiacidal concentration for 90% of strains of 0.03 microns/ml...

journal_title：Antimicrobial agents and chemotherapy

authors： Hammerschlag MR,Qumei KK,Roblin PM

更新日期：1992-07-01 00:00:00

abstract：:Forty-one patients with erythema migrans were enrolled in an open-labelled pilot study of oral clarithromycin, 500 mg twice daily for 21 days, for the treatment of early Lyme disease. Immediately posttherapy, pretreatment signs and symptoms resolved among 91% of the 33 evaluable patients. At 6 months, all 28 of the ev...

journal_title：Antimicrobial agents and chemotherapy

authors： Dattwyler RJ,Grunwaldt E,Luft BJ

更新日期：1996-02-01 00:00:00

abstract：:Ovotransferrin immobilized by covalent linkage to Sepharose 4B showed a bacteriostatic effect towards Escherichia coli similar to that of free ovotransferrin. The growth of the bacteria, after exposure to the gel-bound ovotransferrin and its removal, depended on the length of exposure. The results suggest that the ant...

journal_title：Antimicrobial agents and chemotherapy

authors： Valenti P,Antonini G,Fanelli MR,Orsi N,Antonini E

更新日期：1982-05-01 00:00:00

abstract：:Antimicrobial photodynamic inactivation (PDI) was shown to be a promising treatment modality for microbial infections. This study explores the effect of chitosan, a polycationic biopolymer, in increasing the PDI efficacy against Gram-positive bacteria, including Staphylococcus aureus, Staphylococcus epidermidis, Strep...

journal_title：Antimicrobial agents and chemotherapy

authors： Tsai T,Chien HF,Wang TH,Huang CT,Ker YB,Chen CT

更新日期：2011-05-01 00:00:00

abstract：:Eighty adults in areas of Kenya where malaria is holoendemic received presumptive treatment with atovaquone-proguanil and were followed closely. The time to the first Plasmodium falciparum parasitemia was 32 days. This prolonged prophylaxis period has implications for study design when used in malaria intervention tri...

journal_title：Antimicrobial agents and chemotherapy

authors： Polhemus ME,Remich S,Ogutu B,Waitumbi J,Lievens M,Ballou WR,Heppner DG Jr

更新日期：2008-04-01 00:00:00

abstract：:Rifalazil, also known as KRM-1648 or benzoxazinorifamycin, is a new semisynthetic rifamycin with a long half-life of approximately 60 h. Rifalazil has potent bactericidal activity against Mycobacterium tuberculosis in vitro and in animal models of tuberculosis (TB). Prior studies in healthy volunteers showed that once...

journal_title：Antimicrobial agents and chemotherapy

authors： Dietze R,Teixeira L,Rocha LM,Palaci M,Johnson JL,Wells C,Rose L,Eisenach K,Ellner JJ

更新日期：2001-07-01 00:00:00

abstract：:Tiacumicins B and C are members of a novel group of 18-membered macrolide antibiotics with in vitro activity against Clostridium difficile. The MICs against 15 strains of C. difficile were 0.12 to 0.25 microgram/ml for tiacumicin B, 0.25 to 1 microgram/ml for tiacumicin C, and 0.5 to 1 microgram/ml for vancomycin. The...

journal_title：Antimicrobial agents and chemotherapy

authors： Swanson RN,Hardy DJ,Shipkowitz NL,Hanson CW,Ramer NC,Fernandes PB,Clement JJ

更新日期：1991-06-01 00:00:00

abstract：:Ceftriaxone in short courses has emerged as an effective alternative to chloramphenicol for the treatment of typhoid fever. To study the pharmacokinetics of ceftriaxone in acute typhoid fever, 10 febrile Nepalese adolescents and young adults with blood culture-positive illness were treated with 3 g of ceftriaxone (int...

journal_title：Antimicrobial agents and chemotherapy

authors： Acharya G,Crevoisier C,Butler T,Ho M,Tiwari M,Stoeckel K,Bradley CA

更新日期：1994-10-01 00:00:00

abstract：:Production of a Klebsiella pneumoniae carbapenemase (KPC) is the most common mechanism of carbapenem resistance in the United States; however, until now, KPC-producing isolates have not been found in western Michigan. Molecular typing of two KPC-producing K. pneumoniae isolates from Michigan showed their similarity to...

journal_title：Antimicrobial agents and chemotherapy

authors： Kitchel B,Sundin DR,Patel JB

更新日期：2009-10-01 00:00:00

abstract：:We developed a high-performance liquid chromatography (HPLC) assay to validate time-kill and postantifungal-effect (PAFE) experiments for voriconazole against Candida albicans, Candida glabrata, and Candida parapsilosis isolates. Voriconazole exerted prolonged fungistatic activity but no PAFE at concentrations achieva...

journal_title：Antimicrobial agents and chemotherapy

authors： Li Y,Nguyen MH,Derendorf H,Cheng S,Clancy CJ

更新日期：2007-08-01 00:00:00

abstract：:The absorption and excretion of equivalent doses of ampicillin, pivampicillin, and amoxycillin were compared in 10 healthy volunteers after administration of these antibiotics in a randomized triple crossover fashion. As recommended, ampicillin and amoxycillin were administered on an empty stomach, whereas pivampicill...

journal_title：Antimicrobial agents and chemotherapy

authors： Verbist L

更新日期：1974-11-01 00:00:00

abstract：:Arylimidamides (AIAs) have been shown to have considerable biological activity against intracellular pathogens, includingTrypanosoma cruzi, which causes Chagas disease. In the present study, the activities of 12 novel bis-AIAs and 2 mono-AIAs against different strains ofT. cruziin vitroandin vivowere analyzed. The mos...

journal_title：Antimicrobial agents and chemotherapy

authors： Guedes-da-Silva FH,Batista DG,Meuser MB,Demarque KC,Fulco TO,Araújo JS,Da Silva PB,Da Silva CF,Patrick DA,Bakunova SM,Bakunov SA,Tidwell RR,Oliveira GM,Britto C,Moreira OC,Soeiro MN

更新日期：2016-03-25 00:00:00

abstract：:β-Lactam resistance levels vary among methicillin-resistant Staphylococcus aureus (MRSA) clinical isolates, mediated by chromosomal mutations and exogenous resistance gene mecA However, MRSA resistance mechanisms are incompletely understood. A P440L mutation in the RNA polymerase β' subunit (RpoC) in slow-vancomycin-i...

journal_title：Antimicrobial agents and chemotherapy

authors： Matsuo M,Yamamoto N,Hishinuma T,Hiramatsu K

更新日期：2019-01-29 00:00:00

abstract：:S. aureus combats cell wall antibiotic stress by altered gene expression mediated by various environmental signal sensors. In this study, we examined the transcriptional regulation of trfA, a gene related to mecA of Bacillus subtilis encoding an adaptor protein implicated in multiple roles, notably, proteolysis and ge...

journal_title：Antimicrobial agents and chemotherapy

authors： Jousselin A,Kelley WL,Barras C,Lew DP,Renzoni A

更新日期：2013-07-01 00:00:00

abstract：:7-[alpha-(1-Methyl-4-pyridiniothio)-acetamido] cephalosporanic acid, referred to herein as BL-S 217, is a new broad-spectrum semisynthetic cephalosporin that offers several advantages over cephalothin. A comparison of the activity in vitro of these antibiotics indicates that BL-S 217 is about eightfold more effective ...

journal_title：Antimicrobial agents and chemotherapy

authors： Buck RE,Leitner F,Price KE

更新日期：1972-01-01 00:00:00