0000000000309133

AUTHOR

E. Jähnchen

showing 10 related works from this author

Zunahme der Promazin-Albumin-Bindung, bedingt durch andere Pharmaka

1969

PharmacologybiologyChemistryPharmacology toxicologySerum albuminAlbuminSulfadimethoxineGeneral MedicinePlasma protein bindingPharmacologySulfamethoxypyridazinebiology.proteinmedicinemedicine.drugPromazineNaunyn-Schmiedebergs Archiv für Pharmakologie
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Dose-dependent metabolism and hepatic distribution of phenprocoumon in rats

1988

The dose-dependency of phenprocoumon disposition was determined in rats by iv administration of 0.1 and 1.0 mg/kg doses to separate groups of animals. The intrinsic clearance (unbound clearance) was 33% lower in the animals given 1.0 mg/kg dose than in the animals given 0.1 mg/kg dose. The apparent unbound volume of distribution was 55% lower and the elimination rate constant 54% higher in the high dose group than in the lower dose group. Binding of phenprocoumon to liver showed saturability with a two- to threefold higher apparent unbound fraction of phenprocoumon in liver in animals given the high dose in comparison to animals given the low dose.

Malemedicine.medical_specialtymedicine.drug_classDose dependencePhenprocoumonPharmacokineticsElimination rate constantInternal medicinemedicineAnimalsDistribution (pharmacology)Tissue DistributionPharmacology (medical)General Pharmacology Toxicology and PharmaceuticsVolume of distributionDose-Response Relationship DrugChemistryAnticoagulantRats Inbred Strains4-HydroxycoumarinsMetabolismRatsEndocrinologyLiverInjections IntravenousPhenprocoumonCarrier Proteinsmedicine.drugJournal of Pharmacokinetics and Biopharmaceutics
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Zunahme der Promazin-Albumin-Bindung, bedingt durch andere Pharmaka / Increased Albumin Binding of Promazine Depending on other Drugs

1969

Es wurde der Einflus von Sulfafurazol, Sulfamethoxypyridazin, Sulfadimethoxin, Sulfamethoxydiazin, Suramin, Tetracyclin, Oxytetracyclin und Chlortetracyclin auf das Bindungsvermogen einer 4% igen Rinder-serumalbuminlosung fur Promazin untersucht. Sulfafurazol, Sulfamethoxypyridazin und Sulfadimethoxin verdrangten Promazin aus seiner Albuminbindung, die ubrigen Pharmaka bewirkten eine Zunahme der Promazineiweisbindung. Damit wurde gezeigt, das sich Arzneimittel nicht nur gegenseitig aus der Eiweisbindung verdrangen, sondern auch gegenseitig ihre Bindung an Eiweis verstarken konnen. Sulfamethoxydiazin bewirkte eine geringe, Suramin eine sehr starke Abnahme des freien Promazins. Jeweils gleich…

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Isosorbide dinitrate: pharmacokinetics after intravenous administration.

1982

Isosorbide dinitrate (ISDN) is an important organic nitrate found therapeutically useful in its sublingual and oral forms in various cardiovascular diseases such as angina pectoris (1) and congestive heart failure (2). Recently Distante et al. (3) showed that an intravenous infusion of this drug, at 0.021–0.083 mg/min is also effective in managing unstable angina. The availability of an intravenous dosage form of ISDN not only affords the opportunity to characterize the pharmacokinetics of this drug after this particular mode of therapy, but also gives the possibility of assessing the bio-availability of this drug after other (e.g., oral) routes of administration in patients. This latter po…

DrugUnstable anginabusiness.industrymedia_common.quotation_subjectPharmaceutical ScienceIsosorbide Dinitratemedicine.diseaseDosage formAngina PectorisAnginaKineticsPharmacokineticsHeart failureAnesthesiamedicineHumansIn patientInfusions ParenteralIsosorbide dinitratebusinessmedia_commonmedicine.drugJournal of pharmaceutical sciences
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�ber den Einflu� saurer Substanzen auf die Bindung von Promazin an Rinderserumalbumin

1968

PharmacologyChemistryPharmacology toxicologyGeneral MedicineMolecular biologyNaunyn-Schmiedebergs Archiv f�r Pharmakologie und Experimentelle Pathologie
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Bestimmung der Eiweissbindung von Pharmaka in bikarbonatgepufferten Lösungen

1970

A gel filtration method is described for quantitative estimation of protein binding of drugs at 37 °C and pH 7.4 in solutions containing bicarbonate buffer.

PharmacologyCellular and Molecular Neurosciencechemistry.chemical_compoundChromatographychemistryBicarbonateSize-exclusion chromatographyMolecular MedicineCell BiologyMolecular BiologyBuffer (optical fiber)Experientia
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Species-dependent stereospecific serum protein binding of the oral anticoagulant drug phenprocoumon

1978

13 mammalian species are classified into 3 clearcut groups with respect to the stereospecific serum protein-binding of phenprocoumon: 2 groups showing opposed stereospecific binding characteristics and a 3rd group exhibiting no stereospecific binding. Structural differences in the albumin molecule account for these stereospecific differences in serum protein-binding.

DrugSwinemedia_common.quotation_subjectGuinea PigsSerum proteinStructural differencePhenprocoumonMiceCellular and Molecular NeuroscienceDogsStereospecificitySpecies SpecificitymedicineAnimalsHumansHorsesMolecular BiologySerum Albuminmedia_commonPharmacologyChemistryGoatsAlbuminStereoisomerism4-HydroxycoumarinsHaplorhiniCell BiologyRatsBiochemistryCatsPhenprocoumonOral anticoagulantMolecular MedicineCattleRabbitsProtein Bindingmedicine.drugExperientia
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Die Aufnahme von Promazin, Chlorpromazin und deren Desmethylmetaboliten in das isoliert perfundierte Rattenhirn

1971

The uptake of promazine, chlorpromazine, desmethylpromazine, and desmethylchlorpromazine into the isolated rat brain was determined in relation to their lipophilic character and their binding to albumin and erythroeytes in the perfusion media. The desmethylmetabolites showed about the same degree of binding as their parent compounds promazine and chlorpromazine. On the other hand the partition coefficients of promazine and chlorpromazine were about 10 times higher than those of their desmethylmetabolites. The more hydrophilic desmethyl-metabolites permeated more slowly into the rat brain, but in the distribution equilibrium they may obviously come up to the same concentration in the brain a…

PharmacologyPartition coefficientChromatographyChemistrymedicineAlbuminDistribution (pharmacology)General MedicineRat brainChlorpromazinePerfusionPromazinemedicine.drugNaunyn-Schmiedebergs Archiv f�r Pharmakologie
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Die Bedeutung der Benzolringe bei der Eiwei�bindung von Promazin und Chlorpromazin

1969

Die unterschiedliche Bindungsfahigkeit von Promazin und Chlorpromazin in 1% iger und 4% iger Rinderserumalbuminlosung lies eine Beteiligung der Phenothiazinbenzolringe an der Eiweisbindung vermuten. Durch einfache aromatische Substanzen wie Benzoesaure, Anilin, 2,6-Dihydroxybenzoesaure, Salicylsaure, Acetylsalicylsaure und Nicotinsaure konnten die Phenothiazinderivate aus ihrer Bindung an Rinderserumalbumin verdrangt werden. Dagegen zeigten alicyclische Verbindungen wie Cyclohexylamin und Tranexamsaure keinen Verdrangungseffekt. Aus diesen Befunden wurde auf eine hydrophobe Wechselwirkung zwischen den Benzolringen der Phenothiazinderivate einerseits und des Albumins andererseits geschlossen.

PharmacologyChemistryPharmacology toxicologyGeneral MedicineMolecular biologyNaunyn-Schmiedebergs Archiv f�r Pharmakologie und Experimentelle Pathologie
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SPECIES-DEPENDENT STEREOSPECIFIC SERUM PROTEIN BINDING OF PHENPROCOUMON

1978

PhenprocoumonStereospecificityBiochemistryChemistrymedicineSerum proteinmedicine.drug
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