Cryptococcus neoformans resistance to echinocandins: (1,3)beta-glucan synthase activity is sensitive to echinocandins.

Abstract:

:(1,3)Beta-D-glucan synthase (EC 2.4.1.34. UDP-glucose: 1,3-beta-D-glucan 3-beta-glucosyltransferase) uses UDP-glucose as substrate and catalyzes the polymerization of glucose ([1,3]-beta-linkages) to form the major carbohydrate component of the fungal cell wall. We have optimized in vitro assay conditions for (1,3)beta-glucan synthase activity from Cryptococcus neoformans. Cells lysed in 50 mM Tris, pH 7.75, containing 20% glycerol, 2 mM NaF, 1 mM dithiothreitol, 0.1 mM phenylmethylsulfonyl fluoride, 5 mM MgCl(2), 0.1% protease and phosphatase inhibitor cocktails, and 60 microM GTPgammaS produced maximum specific activity in vitro. We tested in vitro C. neoformans (1,3)beta-glucan synthase activity against the (1,3)beta-glucan synthase inhibitors, caspofungin and cilofungin, and have determined that (1,3)beta-glucan synthase activity is very sensitive (apparent K(i) of 0.17 +/- 0.02 microM and 22 +/- 5.7 microM, respectively) to these echinocandins. Taken together with high MICs for C. neoformans (caspofungin MIC, 16 microg/ml; cilofungin MIC, 64 microg/ml), our results indicate that C. neoformans is resistant to caspofungin and cilofungin by a mechanism(s) unrelated to (1,3)beta-glucan synthase resistance.

authors

Maligie MA,Selitrennikoff CP

doi

10.1128/AAC.49.7.2851-2856.2005

subject

Has Abstract

pub_date

2005-07-01 00:00:00

pages

2851-6

issue

7

eissn

0066-4804

issn

1098-6596

pii

49/7/2851

journal_volume

49

pub_type

杂志文章
  • Diazepam-mediated inhibition of human immunodeficiency virus type 1 expression in human brain cells.

    abstract::Treatment of acutely infected human brain cell and enriched microglial cell cultures with diazepam inhibited human immunodeficiency virus type 1 (HIV-1) p24 antigen expression. Similarly, diazepam suppressed HIV-1 expression in chronically infected promonocytic (U1) cells and acutely infected monocyte-derived macropha...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.41.11.2566

    authors: Lokensgard JR,Gekker G,Hu S,Arthur AF,Chao CC,Peterson PK

    更新日期:1997-11-01 00:00:00

  • A propensity score analysis shows that empirical treatment with linezolid does not increase the thirty-day mortality rate in patients with Gram-negative bacteremia.

    abstract::The role of linezolid in empirical therapy of suspected bacteremia remains unclear. The aim of this study was to evaluate the influence of empirical use of linezolid or glycopeptides in addition to other antibiotics on the 30-day mortality rates in patients with Gram-negative bacteremia. For this purpose, 1,126 patien...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.03796-14

    authors: Ternavasio-de la Vega HG,Mateos-Díaz AM,Martinez JA,Almela M,Cobos-Trigueros N,Morata L,De-la-Calle C,Sala M,Mensa J,Marcos M,Soriano A

    更新日期:2014-12-01 00:00:00

  • Antimalarial dyes revisited: xanthenes, azines, oxazines, and thiazines.

    abstract::In 1891 Guttmann and Ehrlich (P. Guttmann and P. Ehrlich, Berlin Klin. Wochenschr. 28:953-956, 1891) were the first to report the antimalarial properties of a synthetic, rather than a natural, material when they described the clinical cure of two patients after oral administration of a thiazine dye, methylene blue. Si...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.39.12.2671

    authors: Vennerstrom JL,Makler MT,Angerhofer CK,Williams JA

    更新日期:1995-12-01 00:00:00

  • Conjugative Delivery of CRISPR-Cas9 for the Selective Depletion of Antibiotic-Resistant Enterococci.

    abstract::The innovation of new therapies to combat multidrug-resistant (MDR) bacteria is being outpaced by the continued rise of MDR bacterial infections. Of particular concern are hospital-acquired infections (HAIs) that are recalcitrant to antibiotic therapies. The Gram-positive intestinal pathobiont Enterococcus faecalis is...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01454-19

    authors: Rodrigues M,McBride SW,Hullahalli K,Palmer KL,Duerkop BA

    更新日期:2019-10-22 00:00:00

  • First occurrence of an IMP metallo-beta-lactamase in Aeromonas caviae: IMP-19 in an isolate from France.

    abstract::We describe the first IMP metallo-beta-lactamase in Aeromonas caviae: IMP-19, which differed from IMP-2 by a single amino acid change (Arg to Ala at position 38). bla(IMP-19) was found within a class 1 integron located on a 35-kb plasmid. This is also the first description of an IMP producer in France. ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01462-06

    authors: Neuwirth C,Siebor E,Robin F,Bonnet R

    更新日期:2007-12-01 00:00:00

  • Molecular characterization of blaNDM-1 in a sequence type 235 Pseudomonas aeruginosa isolate from France.

    abstract::An NDM-1 carbapenemase-producing Pseudomonas aeruginosa isolate was recovered from a patient hospitalized in France after a previous hospitalization in Serbia. Genetic studies revealed that the blaNDM-1 gene was surrounded by insertion sequence ISAba125 and a truncated bleomycin resistance gene. This blaNDM-1 region w...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.02334-12

    authors: Janvier F,Jeannot K,Tessé S,Robert-Nicoud M,Delacour H,Rapp C,Mérens A

    更新日期:2013-07-01 00:00:00

  • Effects of a human antiflagellar monoclonal antibody in combination with antibiotics on Pseudomonas aeruginosa infection.

    abstract::The in vivo activity of human immunoglobulin M monoclonal antibody IN-2A8, which is specific for flagellum type b of Pseudomonas aeruginosa, was evaluated in comparison to anti-O antigen (serotype B) MAb KO-2F2 and in combination with antibiotics. IN-2A8 showed stronger activity than KO-2F2 against subcutaneous infect...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.36.6.1290

    authors: Uezumi I,Terashima M,Kohzuki T,Kato M,Irie K,Ochi H,Noguchi H

    更新日期:1992-06-01 00:00:00

  • Outbreak of ceftazidime resistance caused by extended-spectrum beta-lactamases at a Massachusetts chronic-care facility.

    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

    pub_type: 杂志文章

    doi:10.1128/aac.34.11.2193

    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

  • Burkholderia is highly resistant to human Beta-defensin 3.

    abstract::The bactericidal activity of the novel beta-defensin hBD-3 against 28 species and 55 strains of gram-positive cocci and gram-negative fermentative and nonfermentative rods was tested. All strains proved to be highly or intermediately susceptible to hBD-3 (minimal bactericidal concentration [MBC],

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.47.5.1739-1741.2003

    authors: Sahly H,Schubert S,Harder J,Rautenberg P,Ullmann U,Schröder J,Podschun R

    更新日期:2003-05-01 00:00:00

  • Pharmacokinetics of sulfobutylether-beta-cyclodextrin and voriconazole in patients with end-stage renal failure during treatment with two hemodialysis systems and hemodiafiltration.

    abstract::Sulfobutylether-beta-cyclodextrin (SBECD), a large cyclic oligosaccharide that is used to solubilize voriconazole (VRC) for intravenous administration, is eliminated mainly by renal excretion. The pharmacokinetics of SBECD and voriconazole in patients undergoing extracorporeal renal replacement therapies are not well ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章,随机对照试验

    doi:10.1128/AAC.01540-09

    authors: Hafner V,Czock D,Burhenne J,Riedel KD,Bommer J,Mikus G,Machleidt C,Weinreich T,Haefeli WE

    更新日期:2010-06-01 00:00:00

  • Fluconazole Susceptibility in Cryptococcus gattii Is Dependent on the ABC Transporter Pdr11.

    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

    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

  • Emergence of OXA-162 Carbapenemase- and DHA-1 AmpC Cephalosporinase-Producing Sequence Type 11 Klebsiella pneumoniae Causing Community-Onset Infection in Greece.

    abstract::OXA-48-like carbapenemases have only recently emerged in Europe. OXA-162 is a rare OXA-48 variant usually coexpressed with extended-spectrum β-lactamases. Here, we report the identification of the first OXA-162 carbapenemase-producing Klebsiella pneumoniae isolates, which coexpressed an AmpC cephalosporinase (DHA-1), ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01514-15

    authors: Voulgari E,Poulou A,Dimitroulia E,Politi L,Ranellou K,Gennimata V,Markou F,Pournaras S,Tsakris A

    更新日期:2015-12-14 00:00:00

  • Enhanced reduction of Helicobacter pylori load in precolonized mice treated with combined famotidine and urease-binding polysaccharides.

    abstract::The present study investigated the effect of a model urease-binding polysaccharide in combination with a histamine H(2) receptor antagonist on Helicobacter pylori colonization in vivo. Euthymic hairless mice were treated daily with dextran sulfate via drinking water and/or famotidine via intragastric gavage starting a...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.44.9.2492-2497.2000

    authors: Icatlo FC Jr,Kimura N,Goshima H,Kodama Y

    更新日期:2000-09-01 00:00:00

  • Reactions catalyzed by purified L-glutamine: keto-scyllo-inositol aminotransferase, an enzyme required for biosynthesis of aminocyclitol antibiotics.

    abstract::Dialyzed extracts of the gentamicin producer Micromonospora purpurea catalyze reactions which represent transaminations proposed for 2-deoxystreptamine biosynthesis. To determine whether these transaminations were catalyzed by a single aminotransferase or by multiple enzymes, we purified and characterized an L-glutami...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.33.4.452

    authors: Lucher LA,Chen YM,Walker JB

    更新日期:1989-04-01 00:00:00

  • Cotransfer of antibiotic resistance genes and a hylEfm-containing virulence plasmid in Enterococcus faecium.

    abstract::The hyl(Efm) gene (encoding a putative hyaluronidase) has been found almost exclusively in Enterococcus faecium clinical isolates, and recently, it was shown to be on a plasmid which increased the ability of E. faecium strains to colonize the gastrointestinal tract. In this work, the results of mating experiments betw...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00242-09

    authors: Arias CA,Panesso D,Singh KV,Rice LB,Murray BE

    更新日期:2009-10-01 00:00:00

  • Inhibition of Mycoplasma pneumoniae by actinomycin D.

    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

    pub_type: 杂志文章

    doi:10.1128/aac.4.3.376

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

    更新日期:1973-09-01 00:00:00

  • Transcriptional regulation of chitin synthases by calcineurin controls paradoxical growth of Aspergillus fumigatus in response to caspofungin.

    abstract::Attenuated activity of echinocandin antifungals at high concentrations, known as the "paradoxical effect," is a well-established phenomenon in Candida albicans and Aspergillus fumigatus. In the yeast C. albicans, upregulation of chitin biosynthesis via the protein kinase C (PKC), high-osmolarity glycerol response (HOG...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00854-09

    authors: Fortwendel JR,Juvvadi PR,Perfect BZ,Rogg LE,Perfect JR,Steinbach WJ

    更新日期:2010-04-01 00:00:00

  • Enhanced inhibition of orthopoxvirus replication in vitro by alkoxyalkyl esters of cidofovir and cyclic cidofovir.

    abstract::The nucleotide phosphonates cidofovir (CDV) and cyclic cidofovir (cCDV) are potent antiviral compounds when administered parenterally but are not well absorbed orally. These compounds have been reported to have activity against orthopoxvirus replication in vitro and in animal models when administered parenterally or b...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.46.4.991-995.2002

    authors: Kern ER,Hartline C,Harden E,Keith K,Rodriguez N,Beadle JR,Hostetler KY

    更新日期:2002-04-01 00:00:00

  • Activity of ceftaroline and epidemiologic trends in Staphylococcus aureus isolates collected from 43 medical centers in the United States in 2009.

    abstract::A Staphylococcus aureus surveillance program was initiated in the United States to examine the in vitro activity of ceftaroline and epidemiologic trends. Susceptibility testing by Clinical and Laboratory Standards Institute broth microdilution was performed on 4,210 clinically significant isolates collected in 2009 fr...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00315-11

    authors: Richter SS,Heilmann KP,Dohrn CL,Riahi F,Costello AJ,Kroeger JS,Biek D,Critchley IA,Diekema DJ,Doern GV

    更新日期:2011-09-01 00:00:00

  • Effect of temperature on the in vitro susceptibility of Staphylococcus aureus to penicillinase-resistant penicillins.

    abstract::Heteroresistant (methicillin-resistant) and nonheteroresistant strains of Staphylococcus aureus were tested for their susceptibility to penicillinase-resistant penicillins at incubation temperatures of 37, 35, and 30 C. Susceptibilities were determined by agar dilution and by the standard Kirby-Bauer agar diffusion te...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.4.3.263

    authors: Thornsberry C,Caruthers JQ,Baker CN

    更新日期:1973-09-01 00:00:00

  • Selective antimicrobial modulation of the intestinal tract by norfloxacin in human volunteers and in gnotobiotic mice associated with a human fecal flora.

    abstract::Intestinal endogenous members of the family Enterobacteriaceae were eliminated in 12 human volunteers treated with 400 or 800 mg of oral norfloxacin per day for 5 days. No clones resistant to quinolone derivatives were isolated. Counts of aerotolerant streptococci were affected to various degrees, depending on their s...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.29.6.1047

    authors: Pecquet S,Andremont A,Tancrède C

    更新日期:1986-06-01 00:00:00

  • In vitro adsorption of gentamicin and netilmicin by polyacrylonitrile and polyamide hemofiltration filters.

    abstract::Adsorption of gentamicin and netilmicin by new polyacrylonitrile and polyamide hemofiltration filters was studied over 4 h, using a single-compartment in vitro continuous venovenous hemofiltration model. After the first dose (16.6 mg of gentamicin, 19.3 mg of netilmicin), 14.9 mg of gentamicin and 19.2 mg of netilmici...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01215-09

    authors: K N Lam P,Tian Q,Ip M,Gomersall CD

    更新日期:2010-02-01 00:00:00

  • In vitro intracellular activity and in vivo efficacy of modithromycin, a novel bicyclolide, against Legionella pneumophila.

    abstract::The in vitro and in vivo activities of modithromycin, a novel bicyclolide, against Legionella pneumophila were compared with those of telithromycin, clarithromycin, azithromycin, and levofloxacin. All the test agents decreased the intracellular growth of viable L. pneumophila bacteria over 96 h of incubation in both t...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01474-10

    authors: Sato T,Tateda K,Kimura S,Ishii Y,Yamaguchi K

    更新日期:2011-04-01 00:00:00

  • Pharmacokinetics of sequential doses of capreomycin powder for inhalation in guinea pigs.

    abstract::The global control of tuberculosis (TB) is at risk by the spread of multidrug-resistant TB (MDR TB). Treatment of MDR TB is lengthy and involves injected drugs, such as capreomycin, that have severe side effects. It was previously reported that a single daily dose of inhaled capreomycin had a positive effect on the ba...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.06145-11

    authors: Garcia-Contreras L,Muttil P,Fallon JK,Kabadi M,Gerety R,Hickey AJ

    更新日期:2012-05-01 00:00:00

  • Phase 1 Study of the Safety, Tolerability, and Pharmacokinetics of the β-Lactamase Inhibitor Vaborbactam (RPX7009) in Healthy Adult Subjects.

    abstract::Vaborbactam (formerly RPX7009) is a member of a new class of β-lactamase inhibitor with pharmacokinetic properties similar to those of many β-lactams, including carbapenems. The pharmacokinetics and safety of vaborbactam were evaluated in 80 healthy adult subjects in a first-in-human randomized, placebo-controlled, do...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章,随机对照试验

    doi:10.1128/AAC.00568-16

    authors: Griffith DC,Loutit JS,Morgan EE,Durso S,Dudley MN

    更新日期:2016-09-23 00:00:00

  • Pharmacokinetics of (-)-beta-D-2-aminopurine dioxolane and (-)-beta-D-2-amino-6-chloropurine dioxolane and their antiviral metabolite (-)-beta-D-dioxolane guanine in rhesus monkeys.

    abstract::(-)-beta-D-2-Aminopurine dioxolane (APD) and (-)-beta-D-2-amino-6-chloropurine dioxolane (ACPD) are recently synthesized dioxolanylpurine nucleoside derivatives being developed as potential prodrugs for the antiviral nucleoside analog (-)-beta-D-dioxolane guanine (DXG). In vitro, APD and ACPD are converted to DXG by x...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.40.10.2332

    authors: Chen H,Boudinot FD,Chu CK,Mcclure HM,Schinazi RF

    更新日期:1996-10-01 00:00:00

  • Pyrosequencing using the single-nucleotide polymorphism protocol for rapid determination of TEM- and SHV-type extended-spectrum beta-lactamases in clinical isolates and identification of the novel beta-lactamase genes blaSHV-48, blaSHV-105, and blaTEM-155

    abstract::TEM- and SHV-type extended-spectrum beta-lactamases (ESBLs) are the most common ESBLs found in the United States and are prevalent throughout the world. Amino acid substitutions at a number of positions in TEM-1 lead to the ESBL phenotype, although substitutions at residues 104 (E to K), 164 (R to S or H), 238 (G to S...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01155-08

    authors: Jones CH,Ruzin A,Tuckman M,Visalli MA,Petersen PJ,Bradford PA

    更新日期:2009-03-01 00:00:00

  • New susceptibility breakpoints for first-line antituberculosis drugs based on antimicrobial pharmacokinetic/pharmacodynamic science and population pharmacokinetic variability.

    abstract::Arguably, one of the most common and consequential laboratory tests performed in the world is Mycobacterium tuberculosis susceptibility testing. M. tuberculosis resistance is defined by growth of > or =1% of a bacillary inoculum on the critical concentration of an antibiotic. The critical concentration was chosen base...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01474-09

    authors: Gumbo T

    更新日期:2010-04-01 00:00:00

  • Whole-genome sequence of Chryseobacterium oranimense, a colistin-resistant bacterium isolated from a cystic fibrosis patient in France.

    abstract::For the first time, we report the whole-genome sequence analysis of Chryseobacterium oranimense G311, a multidrug-resistant bacterium, from a cystic fibrosis patient in France, including resistance to colistin. Whole-genome sequencing of C. oranimense G311 was performed using Ion Torrent PGM, and RAST, the EMBL-EBI se...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.02417-14

    authors: Sharma P,Gupta SK,Diene SM,Rolain JM

    更新日期:2015-03-01 00:00:00

  • Observational Study of Associations between Voriconazole Therapeutic Drug Monitoring, Toxicity, and Outcome in Liver Transplant Patients.

    abstract::The aim of this study was to investigate the variability of the voriconazole plasma level and its relationships with clinical outcomes and adverse events among liver transplant recipients to optimize the efficacy and safety of their treatment. Liver transplant recipients treated with voriconazole were included, and vo...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01211-17

    authors: Hashemizadeh Z,Badiee P,Malekhoseini SA,Raeisi Shahraki H,Geramizadeh B,Montaseri H

    更新日期:2017-11-22 00:00:00