Discovery and analysis of 4H-pyridopyrimidines, a class of selective bacterial protein synthesis inhibitors.

abstract：:Actithiazic acid and alpha-methyldethiobiotin inhibited the conversion of dethiobiotin to biotin resting-cell suspensions of Escherichia coli. The concentrations which effected 50% inhibition were 0.45 and 1.1 microM for actithiazic acid and alpha-methyldethiobiotin, respectively. Cells grown in low concentrations of ...

journal_title：Antimicrobial agents and chemotherapy

authors： Eisenberg MA,Hsiung SC

更新日期：1982-01-01 00:00:00

abstract：:Three mer transposons from the Murray collection of preantibiotic enterobacteria show >99% sequence identity to current isolates. Tn5073 is most closely related to Tn5036 and Tn1696, and Tn5074 is most closely related to Tn5053. Tn5075 is most closely related to Tn21 but lacks integron In2 and is flanked by insertion ...

journal_title：Antimicrobial agents and chemotherapy

authors： Essa AM,Julian DJ,Kidd SP,Brown NL,Hobman JL

更新日期：2003-03-01 00:00:00

abstract：:Coadministration of nevirapine-based antiretroviral therapy (ART) and artemether-lumefantrine is reported to result in variable changes in lumefantrine exposure. We conducted an intensive pharmacokinetic study with 11 HIV-infected adults who were receiving artemether-lumefantrine plus nevirapine-based ART, and we comp...

journal_title：Antimicrobial agents and chemotherapy

authors： Parikh S,Fehintola F,Huang L,Olson A,Adedeji WA,Darin KM,Morse GD,Murphy RL,Taiwo BO,Akinyinka OO,Adewole IF,Aweeka FT,Scarsi KK

更新日期：2015-12-01 00:00:00

abstract：:We describe here the in vitro activities of azithromycin, clarithromycin, minocycline, or tigecycline alone and in combination with amphotericin B, itraconazole, terbinafine, voriconazole, anidulafungin, caspofungin, or micafungin against 30 isolates of the oomycete Pythium insidiosum. The assays were based on the CLS...

journal_title：Antimicrobial agents and chemotherapy

authors： Jesus FP,Ferreiro L,Loreto ÉS,Pilotto MB,Ludwig A,Bizzi K,Tondolo JS,Zanette RA,Alves SH,Santurio JM

更新日期：2014-09-01 00:00:00

abstract：:Mannopeptimycins alpha, beta, gamma, delta, and epsilon are new cyclic glycopeptide antibiotics produced by Streptomyces hygroscopicus LL-AC98. Mannopeptimycins gamma, delta, and epsilon, which have an isovaleryl substitution at various positions on the terminal mannose of the disaccharide moiety, demonstrated moderat...

journal_title：Antimicrobial agents and chemotherapy

authors： Singh MP,Petersen PJ,Weiss WJ,Janso JE,Luckman SW,Lenoy EB,Bradford PA,Testa RT,Greenstein M

更新日期：2003-01-01 00:00:00

abstract：:The in vitro activity of ketolide HMR 3647 against coryneform bacteria isolated from clinical samples was evaluated. Except against Corynebacterium jeikeium and C. urealyticum, HMR 3647 showed high activity against Corynebacterium spp., being more active than 14- and 16-membered macrolides, azithromycin, or clindamyci...

journal_title：Antimicrobial agents and chemotherapy

authors： Martínez-Martínez L,Pascual A,Suárez AI,Perea EJ

更新日期：1998-12-01 00:00:00

abstract：:Dogs were experimentally inoculated with Rickettsia rickettsii to determine if anti-inflammatory or immunosuppressive dosages of prednisolone, when administered in conjunction with an antirickettsial antibiotic (doxycycline), induced therapeutically relevant pathophysiological consequences that ultimately influence di...

journal_title：Antimicrobial agents and chemotherapy

authors： Breitschwerdt EB,Davidson MG,Hegarty BC,Papich MG,Grindem CB

更新日期：1997-01-01 00:00:00

abstract：:Genes belonging to different erm DNA hybridization classes were selectively amplified by polymerase chain reaction with a pair of oligonucleotides that corresponded to conserved amino acid motifs in known ERM methylases. Identification of the resistance mechanism was possible despite substantial nucleotide sequence di...

journal_title：Antimicrobial agents and chemotherapy

authors： Arthur M,Molinas C,Mabilat C,Courvalin P

更新日期：1990-10-01 00:00:00

abstract：:BackgroundChagas disease reactivation in HIV positive people is an opportunistic infection with 79-100% mortality. It commonly involves the central nervous system (CNS). Early treatment with trypanocidal drugs such as benznidazole (BNZ) is crucial for this severe manifestation of Trypanosoma cruzi infection. However, ...

journal_title：Antimicrobial agents and chemotherapy

authors： Fernández ML,Marson ME,Mastrantonio GE,Corti MA,Fleitas U,Lloveras SC,Lista N,Priarone MM,Domínguez C,Garcia-Bournissen F

更新日期：2020-12-23 00:00:00

abstract：:In this study, the genetic organization of three novel genomic antibiotic resistance islands (AbaRs) in Acinetobacter baumannii isolates belonging to group of European clone II (EC II) comM integrated sequences of 18-, 21-, and 23-kb resistance islands were determined. These resistance islands carry the backbone of Ab...

journal_title：Antimicrobial agents and chemotherapy

authors： Seputiene V,Povilonis J,Suziedeliene E

更新日期：2012-04-01 00:00:00

abstract：:Combination therapy using drugs with different mechanisms of action is the current state of the art in antimalarial treatment. However, except for artemisinin-based combination therapies, only a few other combinations are now available. Increasing concern regarding the emergence and spread of artemisinin resistance in...

journal_title：Antimicrobial agents and chemotherapy

authors： Bei ZC,Li GF,Zhao JH,Zhang M,Ji XG,Wang JY

更新日期：2020-10-20 00:00:00

abstract：:Human cell culture-derived interferon was shown to inhibit human cytomegalovirus in vitro. A prototype strain, Davis, and six clinical isolates of cytomegalovirus were tested. All six isolates showed uniform susceptibility to interferon, exceeding that of the Davis strain by two- to fourfold. The latter virus was foun...

journal_title：Antimicrobial agents and chemotherapy

authors： Postic B,Dowling JN

更新日期：1977-04-01 00:00:00

abstract：:Two aminocyclitol-negative Micromonospora mutants representing two different species, M. purpurea and M. inyoensis, and blocked at different steps in the biosynthetic pathway were paired and cofermented for the synthesis of antibiotics. The two blocked mutants were incapable of producing antibiotics alone except when ...

journal_title：Antimicrobial agents and chemotherapy

authors： Lee BK,Nagabhushan TL,Condon RG,Cooper AB,Waitz JA

更新日期：1978-07-01 00:00:00

abstract：:Ro 09-0179 (4',5-dihydroxy-3,3',7-trimethoxyflavone), isolated from a Chinese medicinal herb, was found to have potent antiviral activity. It selectively inhibited the replication of human picornaviruses, such as rhinoviruses and coxsackieviruses in tissue culture, but not other DNA and RNA viruses. Ro 09-0298 (4',5-d...

journal_title：Antimicrobial agents and chemotherapy

authors： Ishitsuka H,Ohsawa C,Ohiwa T,Umeda I,Suhara Y

更新日期：1982-10-01 00:00:00

abstract：:The minimal inhibitory concentration of temocillin (BRL 17421) against 476 clinical isolates was determined by an agar dilution method. Temocillin was active against most of the Enterobacteriaceae, Haemophilus, and Neisseria strains tested. The compound showed low activity or was inactive against Bacteroides, Campylob...

journal_title：Antimicrobial agents and chemotherapy

authors： Van Landuyt HW,Pyckavet M,Lambert A,Boelaert J

更新日期：1982-10-01 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

authors： Yang ML,Uhrig J,Vu K,Singapuri A,Dennis M,Gelli A,Thompson GR 3rd

更新日期：2015-12-07 00:00:00

abstract：:Levofloxacin is an antituberculosis drug with substantial interindividual pharmacokinetic variability; therapeutic drug monitoring (TDM) could therefore be helpful to improve treatment results. TDM would be more feasible with limited sampling strategies (LSSs), a method to estimate the area under the concentration cur...

journal_title：Antimicrobial agents and chemotherapy

authors： van den Elsen SHJ,Sturkenboom MGG,Van't Boveneind-Vrubleuskaya N,Skrahina A,van der Werf TS,Heysell SK,Mpagama S,Migliori GB,Peloquin CA,Touw DJ,Alffenaar JC

更新日期：2018-11-26 00:00:00

abstract：:Development of resistance to the antipseudomonal penicillins and cephalosporins mediated by hyperproduction of the chromosomal cephalosporinase AmpC is a major threat to the successful treatment of Pseudomonas aeruginosa infections. Although ampD inactivation has been previously found to lead to a partially derepresse...

journal_title：Antimicrobial agents and chemotherapy

authors： Juan C,Moyá B,Pérez JL,Oliver A

更新日期：2006-05-01 00:00:00

abstract：:INX-08189 is an aryl-phosphoramidate of 6-O-methyl-2'-C-methyl guanosine. INX-08189 was highly potent in replicon assays, with a 50% effective concentration of 10±6 nM against hepatitis C genotype 1b at 72 h. The inhibitory effect on viral replication was rapid, with a 50% effective concentration (EC50) of 35±8 nM at ...

journal_title：Antimicrobial agents and chemotherapy

authors： Vernachio JH,Bleiman B,Bryant KD,Chamberlain S,Hunley D,Hutchins J,Ames B,Gorovits E,Ganguly B,Hall A,Kolykhalov A,Liu Y,Muhammad J,Raja N,Walters CR,Wang J,Williams K,Patti JM,Henson G,Madela K,Aljarah M,Gilles

更新日期：2011-05-01 00:00:00

abstract：:Treatment of Escherichia coli K-10 with 100 mug of chloramphenicol per ml for periods greater than 30 min leads to progressive lysis and killing of cells. The bactericidal action of the antibiotic is dependent on cell growth and physiology; only rapidly dividing cells are susceptible to killing; resting or slowly grow...

journal_title：Antimicrobial agents and chemotherapy

authors： Guota RS

更新日期：1975-06-01 00:00:00

abstract：:A clinical isolate of Bacteroides vulgatus was resistant to tetracycline, clindamycin, ampicillin, cephaloridine, cefoxitin, and other beta-lactam antibiotics except imipenem. beta-Lactam resistance was mediated by a membrane-associated, clavulanate-sensitive cephalosporinase capable of degrading cephalosporins and pe...

journal_title：Antimicrobial agents and chemotherapy

authors： Parker AC,Smith CJ

更新日期：1993-05-01 00:00:00

abstract：:There are currently few or no published data on the amount of cerebrospinal fluid (CSF) penetration of daptomycin in patients with suspected or documented neurosurgical infections. We conducted a prospective study, assessing the pharmacokinetics and CSF penetration of a single intravenous daptomycin dose administered ...

journal_title：Antimicrobial agents and chemotherapy

authors： Kullar R,Chin JN,Edwards DJ,Parker D,Coplin WM,Rybak MJ

更新日期：2011-07-01 00:00:00

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：: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：:We studied the DNA sequence variation of van genes of 34 isolates of Enterococcus spp. The isolates containing the vanB gene exhibited between 0 and 41 base pair changes per 801 bp studied when the vanB sequences were compared to that of the reference strain Enterococcus faecalis V583. The isolates carrying the vanC-2...

journal_title：Antimicrobial agents and chemotherapy

authors： Patel R,Uhl JR,Kohner P,Hopkins MK,Steckelberg JM,Kline B,Cockerill FR 3rd

更新日期：1998-01-01 00:00:00

abstract：:We compared the inoculum effects for 109 recent clinical isolates of the Bacteroides fragilis group of cefoxitin, cefotetan, ceftizoxime, ceftriaxone, and three beta-lactamase inhibitors (clavulanic acid, sulbactam, and tazobactam) and their penicillin-derived components. Bactericidal activity was assayed and morpholo...

journal_title：Antimicrobial agents and chemotherapy

authors： Goldstein EJ,Citron DM,Cherubin CE

更新日期：1991-09-01 00:00:00

abstract：:Human respiratory syncytial virus (RSV), a paramyxovirus, is a major cause of acute upper and lower respiratory tract infections in infants, young children, and adults. RFI-641 is a novel anti-RSV agent with potent in vitro and in vivo activity. RFI-641 is active against both RSV type A and B strains. The viral specif...

journal_title：Antimicrobial agents and chemotherapy

authors： Huntley CC,Weiss WJ,Gazumyan A,Buklan A,Feld B,Hu W,Jones TR,Murphy T,Nikitenko AA,O'Hara B,Prince G,Quartuccio S,Raifeld YE,Wyde P,O'Connell JF

更新日期：2002-03-01 00:00:00

abstract：:We studied polymyxin B resistance in 10 pairs of clinical Acinetobacter baumannii isolates, two of which had developed polymyxin B resistance in vivo. All polymyxin B-resistant isolates had lower growth rates than and substitution mutations in the lpx or pmrB gene compared to their parent isolates. There were signific...

journal_title：Antimicrobial agents and chemotherapy

authors： Lim TP,Ong RT,Hon PY,Hawkey J,Holt KE,Koh TH,Leong ML,Teo JQ,Tan TY,Ng MM,Hsu LY

更新日期：2015-12-01 00:00:00

abstract：:Whole and fractionated latex of Asclepias syriaca was tested for antimicrobial or growth-promoting activity with 16 genera and species of bacteria. Latex and extracted fractions (distilled water, acetic acid, sodium bicarbonate, sulfuric acid, and ethyl ether) possessed no detectable antimicrobial activity. Comparison...

journal_title：Antimicrobial agents and chemotherapy

authors： McCay S,Mahlberg P

更新日期：1973-02-01 00:00:00

abstract：:We investigated the occurrence of multidrug resistance in 44 Enterobacter aerogenes and Klebsiella pneumoniae clinical isolates. Efflux was involved in resistance in E. aerogenes isolates more frequently than in K. pneumoniae isolates (100 versus 38% of isolates) and was associated with the expression of phenylalanine...

journal_title：Antimicrobial agents and chemotherapy

authors： Tran QT,Dupont M,Lavigne JP,Chevalier J,Pagès JM,Sotto A,Davin-Regli A

更新日期：2009-04-01 00:00:00