Reduced amoxicillin uptake into human gastric mucosa when gastric juice pH is high.

Abstract:

:Amoxicillin when administered with gastric acid suppressors has been shown to be effective in eradication of Helicobacter pylori in 50 to 80% of subjects. The aim of this investigator-blind crossover study was to determine if gastric mucosal amoxicillin uptake was affected by increasing gastric juice pH. Fifteen male subjects (7 H. pylori positive and 8 H. pylori negative) were randomized to receive 150 mg of ranitidine twice a day, 300 mg of ranitidine twice a day, or no drug for 2 days prior to upper endoscopy. The last dose of ranitidine was given 60 min prior to upper endoscopy, and amoxicillin (500 mg) was given 30 min prior to upper endoscopy. The amoxicillin concentrations in mucosal biopsy samples, gastric juice, and serum were determined by a standard microbiological bioassay technique. Mean amoxicillin levels were greater in samples of antrum, fundus, and duodenum for volunteers who received no ranitidine than in those receiving 300 mg of ranitidine (P < 0.05) and those receiving 150 mg of ranitidine (P < 0.05 except for fundus). Amoxicillin levels in the antrum, fundus, and duodenum were negatively correlated with gastric juice pH (P < 0.005 for antrum; P < 0.001 for fundus and duodenum). There was no correlation between gastric juice pH and amoxicillin levels in either gastric juice or serum. The amoxicillin concentration in gastric juice was significantly higher with 300 mg of ranitidine than with no ranitidine (P < 0.05). Thus, lower gastric juice pH is associated with a higher rate of mucosal uptake of amoxicillin.

authors

Cardaci G,Lambert JR,King RG,Onishi N,Midolo P

doi

10.1128/aac.39.9.2084

subject

Has Abstract

pub_date

1995-09-01 00:00:00

pages

2084-7

issue

9

eissn

0066-4804

issn

1098-6596

journal_volume

39

pub_type

临床试验,杂志文章,随机对照试验
  • Novel sulfur-containing microbial metabolite of primaquine.

    abstract::Microbial metabolism studies of the antimalarial drug primaquine, using Streptomyces roseochromogenus (ATCC 13400) have produced an N-acetylated metabolite and a methylene-linked dimeric product, both of which have been previously reported, and a novel sulfur-containing microbial metabolite. The structure of the metab...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.30.2.234

    authors: Hufford CD,Baker JK,McChesney JD,Clark AM

    更新日期:1986-08-01 00:00:00

  • Characterization of the inhibition mechanism of HIV-1 nucleocapsid protein chaperone activities by methylated oligoribonucleotides.

    abstract::Since currently available therapies against HIV/AIDS still show important drawbacks, the development of novel anti-HIV treatments is a key issue. We recently characterized methylated oligoribonucleotides (mONs) that extensively inhibit HIV-1 replication in primary T cells at nanomolar concentrations. The mONs were sho...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.05614-11

    authors: Avilov SV,Boudier C,Gottikh M,Darlix JL,Mély Y

    更新日期:2012-02-01 00:00:00

  • Activities of the modified polyene N-D-ornithyl amphotericin methyl ester and the azoles ICI 153066, Bay n 7133, and Bay l 9139 compared with those of amphotericin B and ketoconazole in the therapy of experimental blastomycosis.

    abstract::We studied the efficacy of new experimental antifungal drugs, which represent molecular modifications of present active agents, in a murine model of blastomycosis. Ketoconazole, previously the best azole drug studied and which is protective when administered orally, was superior to a new oral imidazole, Bay l 9139, an...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.27.3.363

    authors: Lefler E,Brummer E,Perlman AM,Stevens DA

    更新日期:1985-03-01 00:00:00

  • Zinc finger endonuclease targeting PSIP1 inhibits HIV-1 integration.

    abstract::Genome editing using zinc finger nucleases (ZFNs) has been successfully applied to disrupt CCR5 or CXCR4 host factors and inhibit viral entry and infection. Gene therapy using ZFNs to modify the PSIP1 gene, which encodes the lens epithelium-derived growth factor (LEDGF) protein, might restrain an early step of the vir...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.02690-14

    authors: Badia R,Pauls E,Riveira-Munoz E,Clotet B,Esté JA,Ballana E

    更新日期:2014-08-01 00:00:00

  • bla(IMP-9) and its association with large plasmids carried by Pseudomonas aeruginosa isolates from the People's Republic of China.

    abstract::A novel plasmid-mediated metallo-beta-lactamase (IMP-9) is described in seven isolates of Pseudomonas aeruginosa from Guangzhou, China, isolated in 2000. The gene was carried on a large (approximately 450-kb) IncP-2 conjugative plasmid. This is the first report of carriage of bla(IMP) genes on such large plasmids. ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.50.1.355-358.2006

    authors: Xiong J,Hynes MF,Ye H,Chen H,Yang Y,M'zali F,Hawkey PM

    更新日期:2006-01-01 00:00:00

  • In Vitro and Intracellular Activities of Omadacycline against Legionella pneumophila.

    abstract::Omadacycline is an aminomethylcycline antibiotic with in vitro activity against pathogens causing community-acquired bacterial pneumonia (CABP). This study investigated the activity of omadacycline against Legionella pneumophila strains isolated between 1995 and 2014 from nosocomial or community-acquired respiratory i...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01972-19

    authors: Dubois J,Dubois M,Martel JF

    更新日期:2020-04-21 00:00:00

  • Controlled Release of Plectasin NZ2114 from a Hybrid Silicone-Hydrogel Material for Inhibition of Staphylococcus aureus Biofilm.

    abstract::Staphylococcus aureus is a major human pathogen in catheter-related infections. Modifying catheter material with interpenetrating polymer networks is a novel material technology that allows for impregnation with drugs and subsequent controlled release. Here, we evaluated the potential for combining this system with pl...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00604-17

    authors: Klein K,Grønnemose RB,Alm M,Brinch KS,Kolmos HJ,Andersen TE

    更新日期:2017-06-27 00:00:00

  • Mutations Associated with Decreased Susceptibility to Seven Antimicrobial Families in Field and Laboratory-Derived Mycoplasma bovis Strains.

    abstract::The molecular mechanisms of resistance to fluoroquinolones, tetracyclines, an aminocyclitol, macrolides, a lincosamide, a phenicol, and pleuromutilins were investigated in Mycoplasma bovis For the identification of mutations responsible for the high MICs of certain antibiotics, whole-genome sequencing of 35 M. bovis f...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01983-16

    authors: Sulyok KM,Kreizinger Z,Wehmann E,Lysnyansky I,Bányai K,Marton S,Jerzsele Á,Rónai Z,Turcsányi I,Makrai L,Jánosi S,Nagy SÁ,Gyuranecz M

    更新日期:2017-01-24 00:00:00

  • Two 2-hydroxy-3-alkyl-1,4-naphthoquinones with in vitro and in vivo activities against Toxoplasma gondii.

    abstract::Two 3-alkyl-substituted 2-hydroxy-1,4-naphthoquinones, NSC 113452 (NSC52) and NSC 113455 (NSC55), were evaluated for activity against Toxoplasma gondii in vitro and in murine models of acute toxoplasmosis. In vitro, both NSC52 and NSC55 significantly inhibited intracellular replication of T. gondii. In vivo, each comp...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.42.9.2284

    authors: Khan AA,Nasr M,Araujo FG

    更新日期:1998-09-01 00:00:00

  • In vitro pharmacodynamic activities of ABT-492, a novel quinolone, compared to those of levofloxacin against Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis.

    abstract::ABT-492 is a novel quinolone with potent activity against gram-positive, gram-negative, and atypical pathogens, making this compound an ideal candidate for the treatment of community-acquired pneumonia. We therefore compared the in vitro pharmacodynamic activity of ABT-492 to that of levofloxacin, an antibiotic common...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.48.1.203-208.2004

    authors: Gunderson SM,Hayes RA,Quinn JP,Danziger LH

    更新日期:2004-01-01 00:00:00

  • Ceftazidime resistance in Hafnia alvei.

    abstract::Two morphotypes of Hafnia alvei differed in their susceptibilities to beta-lactam antibiotics. Both produced an inducible Bush group 1 beta-lactamase. Hyperinducibility of this enzyme was associated with reduced susceptibility in one morphotype. ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.37.6.1375

    authors: Thomson KS,Sanders CC,Washington JA 2nd

    更新日期:1993-06-01 00:00:00

  • Use of gentamicin in the isolation of subgroup A Chlamydia.

    abstract::The use of gentamicin to control contamination in a tissue culture system for the isolation of Chlamydia was investigated. Gentamicin, at concentrations up to 100 mug/ml, did not appear to inhibit the growth of stock chlamydial strains, as judged by assays for iodine-staining inclusions. When 343 cervical and urethral...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.3.6.698

    authors: Wentworth BB

    更新日期:1973-06-01 00:00:00

  • Action of uracil analogs on human immunodeficiency virus type 1 and its reverse transcriptase.

    abstract::Three structural analogs of 5-ethyl-1-benzyloxymethyl-6-(phenylthio)uracil (E-BPU) inhibited human immunodeficiency virus type 1 (HIV-1) replication without cytotoxicity in vitro and were more potent than azidothymidine and were as potent as E-BPU. The target of these compounds is HIV-1 reverse transcriptase. Reverse ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.39.2.539

    authors: Piras G,Dutschman GE,Im GJ,Pan BC,Chu SH,Cheng YC

    更新日期:1995-02-01 00:00:00

  • Genetic and biochemical analysis of a novel Ambler class A beta-lactamase responsible for cefoxitin resistance in Bacteroides species.

    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

    pub_type: 杂志文章

    doi:10.1128/aac.37.5.1028

    authors: Parker AC,Smith CJ

    更新日期:1993-05-01 00:00:00

  • Lysostaphin-coated catheters eradicate Staphylococccus aureus challenge and block surface colonization.

    abstract::Lysostaphin is an endopeptidase that kills Staphylococcus aureus, a predominant organism in catheter-related infections. Lysostaphin-coated catheters prevented catheter colonization by several strains of S. aureus, and activity was maintained for at least 4 days. Prophylactic use of lysostaphin in catheters may help p...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.48.7.2704-2707.2004

    authors: Shah A,Mond J,Walsh S

    更新日期:2004-07-01 00:00:00

  • Histone methyltransferase inhibitors are orally bioavailable, fast-acting molecules with activity against different species causing malaria in humans.

    abstract::Current antimalarials are under continuous threat due to the relentless development of drug resistance by malaria parasites. We previously reported promising in vitro parasite-killing activity with the histone methyltransferase inhibitor BIX-01294 and its analogue TM2-115. Here, we further characterize these diaminoqu...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.04419-14

    authors: Malmquist NA,Sundriyal S,Caron J,Chen P,Witkowski B,Menard D,Suwanarusk R,Renia L,Nosten F,Jiménez-Díaz MB,Angulo-Barturen I,Santos Martínez M,Ferrer S,Sanz LM,Gamo FJ,Wittlin S,Duffy S,Avery VM,Ruecker A,Delves MJ

    更新日期:2015-02-01 00:00:00

  • Selection of orally active antifungal agents from 3,5-substituted isoxazolidine derivatives based on acute efficacy-safety profiles.

    abstract::Routine in vitro screening of a new synthetic series of 3,5-substituted 2-methylisoxazolidines revealed that three imidazole analogs (PR 967-248, PR 967-234, and PR 969-566) and, to a lesser extent, a triazole analog (PR 988-399) exerted rather potent antifungal activity against three systemic and four dermatophytic c...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.33.6.895

    authors: Palmer GC,Ordy MJ,Simmons RD,Strand JC,Radov LA,Mullen GB,Kinsolving CR,St Georgiev V,Mitchell JT,Allen SD

    更新日期:1989-06-01 00:00:00

  • In vitro antimicrobial susceptibility of bacterial enteropathogens isolated from international travelers to Mexico, Guatemala, and India from 2006 to 2008.

    abstract::The incidence rates of travelers' diarrhea (TD) have remained high for the last 50 years. More recently, there have been increasing recommendations for self-initiated therapy and use of prophylactic drugs for TD. We last examined the in vitro susceptibilities of commonly used antibiotics against TD pathogens in 1997. ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00739-10

    authors: Ouyang-Latimer J,Jafri S,VanTassel A,Jiang ZD,Gurleen K,Rodriguez S,Nandy RK,Ramamurthy T,Chatterjee S,McKenzie R,Steffen R,DuPont HL

    更新日期:2011-02-01 00:00:00

  • In vitro efficacies and resistance profiles of rifampin-based combination regimens for biofilm-embedded methicillin-resistant Staphylococcus aureus.

    abstract::To compare the in vitro antibacterial efficacies and resistance profiles of rifampin-based combinations against methicillin-resistant Staphylococcus aureus (MRSA) in a biofilm model, the antibacterial activities of vancomycin, teicoplanin, daptomycin, minocycline, linezolid, fusidic acid, fosfomycin, and tigecycline a...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01236-13

    authors: Tang HJ,Chen CC,Cheng KC,Wu KY,Lin YC,Zhang CC,Weng TC,Yu WL,Chiu YH,Toh HS,Chiang SR,Su BA,Ko WC,Chuang YC

    更新日期:2013-11-01 00:00:00

  • Therapy of experimental pseudomonas infections with a nonreplicating genetically modified phage.

    abstract::Bacteriophage therapy of bacterial infections has received renewed attention owing to the increasing prevalence of antibiotic-resistant pathogens. A side effect of many antibiotics as well as of phage therapy with lytic phage is the release of cell wall components, e.g., endotoxins of gram-negative bacteria, which med...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.48.10.3817-3822.2004

    authors: Hagens S,Habel A,von Ahsen U,von Gabain A,Bläsi U

    更新日期:2004-10-01 00:00:00

  • Natural occurrence of structures in oral streptococci and enterococci with DNA homology to Tn916.

    abstract::Seventeen oral streptococci and 18 enterococci were tested for the presence of DNA sequences homologous to the conjugative transposon Tn916 encoding tetracycline resistance. All the strains were resistant to tetracyclines, including minocycline, and most of them were resistant to other antibiotics. Tn916-like structur...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.36.1.59

    authors: Bentorcha F,Clermont D,de Cespédès G,Horaud T

    更新日期:1992-01-01 00:00:00

  • Interpretive criteria for cefamandole and cephalothin disk diffusion susceptibility tests.

    abstract::A multi-center study of 1,838 clinical isolates established the accuracy of diffusion susceptibility tests with 30-mug cephalothin disks and 30-mug cefamandole disks. The same interpretive zone standards can be applied to tests with either disk but the two drugs cannot be tested interchangeably. ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.15.1.140

    authors: Barry AL,Schoenknecht FD,Shadomy S,Sherris JC,Thornsberry C,Washington JA,Kammer RB

    更新日期:1979-01-01 00:00:00

  • Clinical isolate of herpes simplex virus type 2 that induces a thymidine kinase with altered substrate specificity.

    abstract::In vitro and in vivo studies were done on a herpes simplex virus type 2 strain recovered from a patient on acyclovir (ACV) which was ACV resistant but expressed thymidine (dThd) kinase (EC 2.7.1.21) activity. Plaque-purified clones derived from the original clinical sample were heterogeneous with respect to plaque siz...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.31.7.1117

    authors: Ellis MN,Keller PM,Fyfe JA,Martin JL,Rooney JF,Straus SE,Lehrman SN,Barry DW

    更新日期:1987-07-01 00:00:00

  • Monodrug efficacies of sulfonamides in prophylaxis for Pneumocystis carinii pneumonia.

    abstract::A remarkably high rate of adverse events is associated with the use of trimethoprim-sulfamethoxazole in patients with human immunodeficiency virus type 1 infection. We examined the efficacies of sulfonamides alone in the prevention of Pneumocystis carinii pneumonitis, with the assumption that at least some of the adve...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.40.4.962

    authors: Hughes WT,Killmar J

    更新日期:1996-04-01 00:00:00

  • Bacteriostatic and bactericidal in vitro activities of clarithromycin and erythromycin against periodontopathic Actinobacillus actinomycetemcomitans.

    abstract::The susceptibilities of 87 periodontitis-associated strains of Actinobacillus actinomycetemcomitans to clarithromycin and erythromycin were determined by standard methodology recommended for Haemophilus influenzae. For clarithromycin the MIC at which 90% of the isolates were inhibited was

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.42.11.3000

    authors: Piccolomini R,Catamo G,Di Bonaventura G

    更新日期:1998-11-01 00:00:00

  • Combination of Amino Acid Substitutions Leading to CTX-M-15-Mediated Resistance to the Ceftazidime-Avibactam Combination.

    abstract::Single amino acid substitutions in the Ω loop of KPC β-lactamases are known to lead to resistance to the ceftazidime-avibactam combination. Here, we investigate this mechanism of resistance in CTX-M enzymes, which are the most widely spread extended-spectrum β-lactamases worldwide. Nine single amino acid polymorphisms...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00357-18

    authors: Compain F,Dorchène D,Arthur M

    更新日期:2018-08-27 00:00:00

  • Intrapulmonary Pharmacokinetics of Levonadifloxacin following Oral Administration of Alalevonadifloxacin to Healthy Adult Subjects.

    abstract::Alalevonadifloxacin (WCK 2349) is a novel l-alanine ester prodrug of levonadifloxacin that is being developed as an oral fluoroquinolone antibiotic. The primary objective of this study was to determine and compare plasma, epithelial lining fluid (ELF), and alveolar macrophage (AM) concentrations of levonadifloxacin fo...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.02297-17

    authors: Rodvold KA,Gotfried MH,Chugh R,Gupta M,Yeole R,Patel A,Bhatia A

    更新日期:2018-02-23 00:00:00

  • In vitro activity of pyronaridine against multidrug-resistant Plasmodium falciparum and Plasmodium vivax.

    abstract::Pyronaridine, a Mannich base antimalarial, has demonstrated high in vivo and in vitro efficacy against chloroquine-resistant Plasmodium falciparum. Although this drug has the potential to become a prominent artemisinin combination therapy, little is known about its efficacy against drug-resistant Plasmodium vivax. The...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00801-10

    authors: Price RN,Marfurt J,Chalfein F,Kenangalem E,Piera KA,Tjitra E,Anstey NM,Russell B

    更新日期:2010-12-01 00:00:00

  • DNA sequence variation within vanA, vanB, vanC-1, and vanC-2/3 genes of clinical Enterococcus isolates.

    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

    pub_type: 杂志文章

    doi:10.1128/AAC.42.1.202

    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

  • ST-246 inhibits in vivo poxvirus dissemination, virus shedding, and systemic disease manifestation.

    abstract::Orthopoxvirus infections, such as smallpox, can lead to severe systemic disease and result in considerable morbidity and mortality in immunologically naïve individuals. Treatment with ST-246, a small-molecule inhibitor of virus egress, has been shown to provide protection against severe disease and death induced by se...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00678-09

    authors: Berhanu A,King DS,Mosier S,Jordan R,Jones KF,Hruby DE,Grosenbach DW

    更新日期:2009-12-01 00:00:00