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  • Articles  (9)
  • Articles: DFG German National Licenses  (9)
  • Latest Papers from Table of Contents or Articles in Press
  • pharmacokinetics  (9)
  • Springer  (9)
  • American Chemical Society (ACS)
  • Nature Publishing Group
  • 2020-2024
  • 2015-2019
  • 1985-1989
  • 1980-1984
  • 1970-1974  (9)
  • 1965-1969
  • 1935-1939
  • 1973  (9)
  • Medicine  (9)
  • Economics
  • Natural Sciences in General
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  • Articles  (9)
Source
  • Articles: DFG German National Licenses  (9)
  • Latest Papers from Table of Contents or Articles in Press
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  • Springer  (9)
  • American Chemical Society (ACS)
  • Nature Publishing Group
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  • 2020-2024
  • 2015-2019
  • 1985-1989
  • 1980-1984
  • 1970-1974  (9)
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  • 1
    Electronic Resource
    Electronic Resource
    Urinary excretion of nortriptyline and five of its metabolites in man after single and multiple oral doses (1973)
    Springer
    European journal of clinical pharmacology 5 (1973), S. 174-180 
    Details
    ISSN: 1432-1041
    Keywords: Tricyclic antidepressant ; nortriptyline ; metabolism ; urine ; pharmacokinetics ; twins ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The urinary excretion of nortriptyline (NT) and five of its metabolites was studied by quantitative gas chromatography in 22 twins and 7 unrelated healthy subjects after single (1 mg/kg) and multiple oral doses (0.4 mg/kg t.i.d.) of NT hydrochloride. A mean recovery of 62% of the dose was found after both single and multiple doses. The metabolite pattern in the urine was qualitatively and quantitatively identical in the two regimes, but there were marked variations in the pattern of metabolites between individuals. The disappearance rate of NT from the plasma was mainly determined by the metabolism of NT to 10-hydroxynortriptyline, which varied considerably between individuals. The data suggest that in certain rapid NT metabolizers, the upper limit for the overall clearance of NT from the plasma (if extrahepatic metabolism is assumed to be negligible) might be set by the blood flow through the liver.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00564899
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  • 2
    Electronic Resource
    Electronic Resource
    Determination of nanogram quantities of diphenhydramine and orphenadrine in human plasma using gas-liquid chromatography (1973)
    Springer
    European journal of clinical pharmacology 6 (1973), S. 268-270 
    Details
    ISSN: 1432-1041
    Keywords: Diphenhydramine ; orphenadrine ; gas-liquid chromatography ; N-selective detector ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A method is described for the assay of nanogram quantities of diphenhydramine and orphenadrine in human plasma. The procedure employs gas-liquid chromatography and a high sensitivity nitrogen detector. It has been used to assay diphenhydramine in plasma after oral administration of therapeutic doses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644744
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  • 3
    Electronic Resource
    Electronic Resource
    Disappearance from the newborn of circulating prenatally administered phenobarbital (1973)
    Springer
    European journal of clinical pharmacology 6 (1973), S. 234-238 
    Details
    ISSN: 1432-1041
    Keywords: Phenobarbital ; neonate ; maternal-fetal exchange ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Plasma concentrations of phenobarbital were measured in 18 newborn infants for one to two weeks after birth. The drug had been administered prenatally to the mothers as part of treatment for maternal hypertension or toxaemia. The plasma half-life of the drug in the infants (77–404 h) was inversely correlated with the extent of prenatal exposure to it. In three infants a bi-phasic plasma curve was found as there was a sudden change from slow to fast disappearance on the 5th to 7th day of life.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644738
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  • 4
    Electronic Resource
    Electronic Resource
    Prediction of steady-state plasma levels of nortriptyline from single oral dose kinetics: A study in twins (1973)
    Springer
    European journal of clinical pharmacology 6 (1973), S. 44-53 
    Details
    ISSN: 1432-1041
    Keywords: Nortriptyline ; pharmacokinetics ; plasma clearance ; gas chromatography — mass spectrometry ; pharmacogenetics ; twins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Five identical (monozygotic) and 6 fraternal (dizygotic) sets of healthy twins between 47 and 53 years of age were given a single oral dose of nortriptyline (NT) hydrochloride 1 mg/kg. The plasma half-life, the apparent volume of distribution, and the plasma clearance of NT were estimated for each subject as well as the urinary excretion rate of conjugated and unconjugated 10-hydroxynortriptyline (10-OH-NT). “Steady-state” plasma levels predicted from the reciprocal single dose plasma clearance rate of NT agreed well with those observed in a previous study of the same twins 2 years previously. In the present study, there was a 5-fold range of the plasma half-lives and 2-fold variation in the apparent volume of distribution of NT (assuming complete availability on oral administration). No correlation was found between the plasma half-life and the apparent volume of distribution. Analysis of variance showed that most of the variability between persons in plasma half-life, apparent volume of distribution and conjugation of 10-OH-NT was genetically determined. The plasma half-life and apparent volume of distribution may contribute independently to the total interindividual variability of the “steady-state” plasma level of NT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561800
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  • 5
    Electronic Resource
    Electronic Resource
    Serum levels of thioridazine in psychiatric patients and healthy volunteers (1973)
    Springer
    European journal of clinical pharmacology 6 (1973), S. 181-186 
    Details
    ISSN: 1432-1041
    Keywords: Phenothiazines ; thioridazine ; serum levels ; pharmacokinetics ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The rate of absorption of thioridazine varied greatly in ten healthy volunteers who took 100 mg in the morning after an overnight fast. The peak level in blood was also variable and it was reached 1 1/4 to 4 h after dosing. Maximal concentrations in the blood varied widely from 0.13 µg/ml to 0.52 µg/ml. No relation was found between the weight or sex of the subjects and the pharmacokinetics of the drug. The serum half life of thioridazine in three healthy volunteers was 9, 10 and 10 h respectively. In a group of 22 patients receiving less than 5 mg/kg body weight a day, there was a strong correlation between the dose and the morning or evening concentration of thioridazine in the blood. A positive correlation was also observed between the age of the patient and the serum level in those who received doses of less than 5 mg/kg body weight.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00558283
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  • 6
    Electronic Resource
    Electronic Resource
    Approach to the pharmacokinetics of dl-7-3H-noradrenaline (1973)
    Springer
    European journal of clinical pharmacology 6 (1973), S. 88-92 
    Details
    ISSN: 1432-1041
    Keywords: Noradrenaline pools ; 7-3H-noradrenaline ; neuro-effector junction kinetics ; pharmacokinetics ; sympathoadrenergic activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A two-compartment model of 73HNA distribution has been developed for studying sympatho-adrenergic activity in intact man. After infusion of 73HNA at constant speed in resting normal subjects, the decay curves of the plasma concentration and urinary excretion of 73HNA were plotted against time. Analysis of the curves yielded constants and indirect indications about noradrenaline exchange processes in the extracellular environment. Complete evaluation of the neuronal pools and of the pathways of biosynthesis and metabolism was impossible, but it seemed likely that 73HNA entered small neuronal pools that underwent rapid exchange with the extracellular environment, a point of some interest in clinical and pharmacologic investigations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00562432
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  • 7
    Electronic Resource
    Electronic Resource
    Comparative pharmacokinetics of sodium- and methylglucamine diatrizoate in urography (1973)
    Springer
    European journal of clinical pharmacology 6 (1973), S. 137-140 
    Details
    ISSN: 1432-1041
    Keywords: Urography ; Hypaque® ; Urovist® ; pharmacokinetics ; renal failure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Comparative tests were carried out, using a radioactive tracer method, on the pharmacokinetics of sodium and methylglucamine diatrizoate. A biological model was simulated using an analogue computer; and the rate and elimination constants, the elimination half life, and the ratio of tissue entry to tissue elimination constants were calculated. Over the period of time required for X-ray diagnosis, the two salts of the contrast medium acid which were tested did not alter the pharmacokinetics of the contrast medium itself.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00562441
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  • 8
    Electronic Resource
    Electronic Resource
    Plasma levels of procaine amide after administration of conventional and sustained-release tablets (1973)
    Springer
    European journal of clinical pharmacology 6 (1973), S. 245-250 
    Details
    ISSN: 1432-1041
    Keywords: Procaine amide ; N-acetylprocaine amide ; sustained-release ; pharmacokinetics ; ventricular arrhythmia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Ten patients with acute myocardial infarction were studied during treatment with either a conventional or a new sustained-release preparation of procaine amide in order to compare fluctuations in plasma concentration and urinary excretion of the drug during “steady state” conditions. Procaine amide in plasma was measured by spectrofluorimetry and the urine concentration of it and its major metabolite, N-acetylprocaine amide, by gas chromatography. The average fluctuation of plasma concentrations was 3.5±0.1 µg/ml during treatment with sustained-release tablets (dosage interval 8 h) and 4.2±0.4 µg/ml during treatment with ordinary tablets (dosage interval 4 h), i. e. it was 20% greater during treatment with the conventional preparation. There was no difference between the two preparations in recovery of the drug from urine (sustained-release tablets 85.4±3.0%; and conventional tablets 90.3±5.4%). Thus, the new sustained-release preparation of procaine amide administered 3 times daily produced the same range of plasma levels as the identical dose of conventional tablets given 6 times a day.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644740
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  • 9
    Electronic Resource
    Electronic Resource
    Evaluation of alclofenac treatment regimes in man (1973)
    Springer
    European journal of clinical pharmacology 6 (1973), S. 261-267 
    Details
    ISSN: 1432-1041
    Keywords: Alclofenac ; antiphlogistic ; man ; pharmacokinetics ; dosage regimes ; plasma levels
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A one compartment open model has been found to fit plasma concentration data previously obtained in man after single oral doses of alclofenac; the parameters of the model are: $${\text{t}}_{\tfrac{{\text{1}}}{{\text{2}}}} $$ abs=1.3±0.7h, $${\text{t}}_{\tfrac{{\text{1}}}{{\text{2}}}} $$ el=3.5±1.2h, Vd/F=17±6. The model has been used successfully to predict steady-state plasma levels of alclofenac after multiple oral doses. One treatment schedule (initial dose 500 mg, maintenance dose 250 mg five times a day) was administered to two volunteers for five days and the plasma levels of alclofenac determined daily. The latter were in good agreement with computer predictions based on the model. It is now possible, therefore, to select the most suitable dosage regimes for this drug.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644743
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