Abstract:
:The inhibition of the lymphadenopathy-associated virus strain of human immunodeficiency virus (HIV) by alternating regimens of two dideoxynucleosides, 3'-azido-3'-deoxythymidine (AZT) (zidovudine) and 2',3'-dideoxycytidine (ddC), was determined in CEM cells. Cultures infected with virus for 2 h were treated with clinically achievable concentrations of AZT, ddC, or a 3-day-alternating regimen of AZT and ddC. Media were completely changed every 3 days and replaced with antiviral agent, and virus production was assayed by p24 antigen and virus-specific DNA. Cells treated with no antiviral agent exhibited breakthrough infection by day 6 in culture, whereas cells treated with 0.1, 1.0, or 3.0 microM AZT had a prolonged time to viral breakthrough. For each regimen of AZT alternating with 0.05 or 0.1 microM ddC, there was consistently prolonged HIV inhibition compared with continuous treatment with AZT alone. The viral suppression achieved with the alternating combinations required AZT as well as ddC and was superior to 3 days of treatment with ddC alternating with 3 days of no antiretroviral treatment. Levels of unintegrated HIV DNA paralleled the detection of p24 antigen, with the most prolonged inhibition of virus-specific DNA occurring with AZT alternating with ddC (compared with all regimens except continuous treatment with ddC). These data suggest that alternating regimens of AZT and ddC not only might decrease toxicity associated with the two drugs but may prove to be more efficacious than AZT alone.
journal_name
Antimicrob Agents Chemotherjournal_title
Antimicrobial agents and chemotherapyauthors
Spector SA,Ripley D,Hsia Kdoi
10.1128/aac.33.6.920subject
Has Abstractpub_date
1989-06-01 00:00:00pages
920-3issue
6eissn
0066-4804issn
1098-6596journal_volume
33pub_type
杂志文章abstract::The pharmacokinetics of minocycline have been studied after single intravenous infusions and repeated oral doses to human subjects with varying degrees of renal impairment. There was no evidence of reduced drug clearance with reduced renal function after intravenous doses although there appeared to be an increase in t...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.8.5.532
更新日期:1975-11-01 00:00:00
abstract::Bloodstream infection (BSI) due to multidrug-resistant Klebsiella is associated with high rates of morbidity and mortality. The aim of this study was to identify predictors of in-hospital mortality among patients with BSI due to ceftazidime-resistant (CAZ-R) Klebsiella pneumoniae at a tertiary care medical center. Pat...
journal_title:Antimicrobial agents and chemotherapy
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doi:10.1128/AAC.50.5.1715-1720.2006
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 临床试验,杂志文章
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abstract::Lupeol, which shows in vitro inhibitory activity against Plasmodium falciparum 3D7 strain with a 50% inhibitory concentration (IC50) of 27.7 +/- 0.5 microM, was shown to cause a transformation of the human erythrocyte shape toward that of stomatocytes. Good correlation between the IC50 value and the membrane curvature...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.46.5.1441-1446.2002
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abstract::ME1100 (arbekacin inhalation solution) is an inhaled aminoglycoside that is being developed to treat patients with hospital-acquired and ventilator-associated bacterial pneumonia (HABP and VABP, respectively). Pharmacokinetic-pharmacodynamic (PK-PD) target attainment analyses were undertaken to evaluate ME1100 regimen...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.02367-19
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.00640-15
更新日期:2015-10-01 00:00:00
abstract::Determinants encoding resistance to antibiotics, except penicillin, of 5 of 21 Streptococcus anginosus clinical isolates that we examined transferred by conjugation into Enterococcus faecalis and into 1 to 5 streptococcal recipients at frequencies of 10(-6) to 10(-8) transconjugants per donor. No R plasmids were detec...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.34.9.1685
更新日期:1990-09-01 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
pub_type: 杂志文章
doi:10.1128/aac.1.1.67
更新日期:1972-01-01 00:00:00
abstract::The effects of acid, oxgall, and H(2)O(2) on susceptibilities to antibiotics and nisin were examined for 13 strains of bifidobacteria. Susceptibilities to ampicillin, cloxacillin, penicillin, vancomycin, kanamycin, neomycin, paramomycin, streptomycin, chloramphenicol, erythromycin, tetracycline, and nisin A were assay...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.00261-06
更新日期:2007-01-01 00:00:00
abstract::Four isogenic derivatives with stably increased glycopeptide MICs (all become resistant to teicoplanin) were obtained from four glycopeptide-susceptible clinical isolates of Staphylococcus haemolyticus. All strains were extensively analyzed and compared for a number of distinctive features. In particular, the results ...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.00260-06
更新日期:2006-07-01 00:00:00
abstract::Antimicrobial susceptibility patterns of 112 clinical isolates, 28 type strains, and 9 reference strains of Nocardia were determined using the Sensititre Rapmyco microdilution panel (Thermo Fisher, Inc.). Isolates were identified by highly discriminatory multilocus sequence analysis and were chosen to represent the di...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.02770-14
更新日期:2015-01-01 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
pub_type: 杂志文章
doi:10.1128/AAC.00220-13
更新日期:2013-07-01 00:00:00
abstract::Cryptococcus gattii isolates from the Pacific Northwest have exhibited higher fluconazole MICs than isolates from other sites. The mechanism of fluconazole resistance in C. gattii is unknown. We sought to determine the role of the efflux pumps Mdr1 and Pdr11 in fluconazole susceptibility. Using biolistic transformatio...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.01777-15
更新日期:2015-12-07 00:00:00
abstract::The high levels of hepatitis B virus (HBV) surface antigen (HBsAg)-bearing subviral particles in the serum of chronically infected individuals are thought to play a role in suppressing the HBV-specific immune response. Current therapeutics are not directed at reducing this viral antigenemia; thus, our group has focuse...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.00541-07
更新日期:2007-12-01 00:00:00
abstract::Class D beta-lactamase OXA-57 was identified in a range of isolates of Burkholderia pseudomallei and Burkholderia thailandensis. Comparative kinetic analyses of wild-type and mutant forms of B. pseudomallei OXA-57 are reported. Implications of these data for beta-lactam resistance and the proposed role of Ser-104 in b...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.49.4.1639-1641.2005
更新日期:2005-04-01 00:00:00
abstract::Magainins are novel polycationic peptides with broad-spectrum antimicrobial activity, including activity against gram-negative bacteria. Gram-negative bacteremia can elicit endotoxic shock that is associated with the increased formation of eicosanoids. Inhibition of eicosanoid synthesis has been shown to improve the o...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.37.3.393
更新日期:1993-03-01 00:00:00
abstract::Sch 21420 is a new aminoglycoside synthesized from gentamicin B. Susceptibility tests with Sch 21420, amikacin, gentamicin, netilmicin, sisomicin, and tobramycin were performed on a variety of bacterial species including 44 with known mechanisms of resistance to aminoglycosides. Sch 21420 and amikacin had similar effe...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.18.2.338
更新日期:1980-08-01 00:00:00
abstract::The National Committee for Clinical Laboratory Standards has proposed a reference broth macrodilution method for in vitro antifungal susceptibility testing of yeasts (the M27-P method). This method is cumbersome and time-consuming and includes MIC endpoint determination by visual and subjective inspection of growth in...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.40.9.1998
更新日期:1996-09-01 00:00:00
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.22.6.976
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abstract::The in vitro activities of HMR 3647 (telithromycin) and HMR 3004, two novel semisynthetic ketolides, were investigated and compared with that of the reference macrolide drug, clarithromycin, against 34 strains of slowly growing mycobacteria at pHs 6.8 and 7.4, as determined radiometrically. The MICs at pH 7.4 were abo...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.44.10.2848-2852.2000
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.42.9.2174
更新日期:1998-09-01 00:00:00
abstract::The in vitro antifungal activities of two N-aminoacyl derivatives of amphotericin B methyl ester (AME) were compared by tube dilution with those of amphotericin B and AME, using 60 isolates representing 10 yeast species. A total of 70% of the strains were inhibited by concentrations of the N-aminoacyl AME derivatives ...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.19.1.106
更新日期:1981-01-01 00:00:00
abstract::Isoxyl (ISO), a thiourea derivative that was successfully used for the clinical treatment of tuberculosis during the 1960s, is an inhibitor of the synthesis of oleic and mycolic acids in Mycobacterium tuberculosis. Its effect on oleic acid synthesis has been shown to be attributable to its inhibitory activity on the s...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
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更新日期:2007-11-01 00:00:00
abstract::Chronic infection with hepatitis C virus (HCV) is a major global health burden and is associated with an increased risk of liver cirrhosis and hepatocellular carcinoma. Current therapy for HCV infection has limited efficacy, particularly against genotype 1 virus, and is hampered by a range of adverse effects. Therefor...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.00214-11
更新日期:2011-08-01 00:00:00
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.28.5.634
更新日期:1985-11-01 00:00:00
abstract::In this study, we characterized two tigecycline-resistant Klebsiella pneumoniae isolates from dog urine samples. The isolates were genetically unrelated, belonging to sequence type 11 (ST11) and ST147, both classically related to human isolates. To the best of our knowledge, this is the first identification of tigecyc...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.02640-16
更新日期:2017-05-24 00:00:00
abstract::Analysis of the transport functions of individual Candida albicans plasma membrane drug efflux pumps is hampered by the multitude of endogenous transporters. We have stably expressed C. albicans Cdr1p, the major pump implicated in multiple-drug-resistance phenotypes, from the genomic PDR5 locus in a Saccharomyces cere...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
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更新日期:2001-12-01 00:00:00
abstract::Of the 176 randomly selected, commensal, gram-negative bacteria isolated from healthy children with low exposure to antibiotics, 138 (78%) carried one or more of the seven macrolide resistance genes tested in this study. These isolates included 79 (91%) isolates from the oral cavity and 59 (66%) isolates from urine sa...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.48.9.3451-3456.2004
更新日期:2004-09-01 00:00:00
abstract::Targeted antisense and gene replacement mutagenesis experiments demonstrate that only the murA1 gene and not the murA2 gene is required for the normal cellular growth of Bacillus anthracis. Antisense-based modulation of murA1 gene expression hypersensitizes cells to the MurA-specific antibiotic fosfomycin despite the ...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.01594-07
更新日期:2008-06-01 00:00:00
abstract::The prevalence of three plasmid-mediated quinolone resistance determinants, QnrA, QnrB, and QnrS, among 526 nonreplicate clinical isolates of Enterobacter cloacae collected at a Taiwanese university hospital in 2004 was determined by PCR and colony hybridization, and the association of Qnr with the IMP-8 metallo-beta-...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.01195-06
更新日期:2007-04-01 00:00:00