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  • 1
    Electronic Resource
    Electronic Resource
    Plasma concentrations and effect on testosterone metabolism after single doses of MK-0434, a steroid 5 alpha-reductase inhibitor, in healthy subjects (1994)
    Springer
    European journal of clinical pharmacology 46 (1994), S. 123-126 
    Details
    ISSN: 1432-1041
    Keywords: Steroid 5α-reductase inhibitor ; Testosterone metabolism ; MK-0434 ; pharmacodynamics ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract A four-period, two-panel, single-rising-dose study (0.1–100 mg) was conducted in healthy males to investigate the pharmacodynamics, tolerability and pharmacokinetics of MK-0434, a steroid 5α-reductase inhibitor. MK-0434 was associated with a significant reduction in dihydrotestosterone, which was maximal at 24 h and maintained through 48 h post treatment. The maximum reduction was approximately 50 % and occurred at all doses above 5 mg (10, 25, 50 and 100 mg). MK-0434 appeared to have no effect on serum testosterone at these single doses. Rising single doses of MK-0434 were associated with an increase in Cmax and AUC but the changes were less than proportional to dose, most likely due to nonlinear absorption. MK-0434 given in single doses up to 100 mg was without significant adverse effects in healthy male volunteers. In summary, MK-0434 is a well-tolerated, potent, orally active 5α-reductase inhibitor in man.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00199874
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  • 2
    Electronic Resource
    Electronic Resource
    Lack of a pharmacokinetic interaction between moexipril and hydrochlorothiazide (1996)
    Springer
    European journal of clinical pharmacology 51 (1996), S. 339-344 
    Details
    ISSN: 1432-1041
    Keywords: Key words Moexipril ; Hydrochlorothiazide; pharmacokinetics ; drug interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objective: To investigate the potential for pharmacokinetic interactions between moexipril, a new converting enzyme inhibitor, and hydrochlorothiazide after single dose administration. Methods: 12 healthy male volunteers were studied by an open, randomised, three-way cross-over design, in which single doses of moexipril, hydrochlorothiazide and the two drugs together were administered. Blood and urine were collected up to 48 hours for measurement of the concentrations of moexipril and its metabolite moexiprilat. In addition, the urine samples were analysed for hydrochlorothiazide. Results: For the area under the plasma concentration-time curve calculated from time 0 to a concentration greater than zero, AUC(0–t), the study showed a mean value of moexipril 437 ng ⋅ ml−1⋅ h−1 following administration of moexipril alone and 416 ng ⋅ ml−1⋅ h−1 following moexipril concomitantly with hydrochloro- thiazide. The corresponding values for the metabolite moexiprilat were 203 and 215 ng ⋅ ml−1⋅ h−1, respectively. The cmax of moexipril and the metabolite (data of the metabolite in parenthesis) were 245.4 (70.8) ng ⋅ ml−1 after administration of moexipril alone and 241.0 (69.2) ng ⋅ ml−1 after coadministration of hydrochlorothiazide. The mean total renal excretion (TUE) of hydrochlorothiazide was 15.2 mg when administered alone and 15.1 mg when given together with moexipril. The corresponding mean TUE-values for moexiprilat were 334 (1200) and 453 (1460) μg. Conclusion: The coadministration of moexipril with hydrochlorothiazide had no demonstrable effect on the measured pharmacokinetic parameters of moexipril, its active metabolite moexiprilat or hydrochlorothiazide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002280050209
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  • 3
    Electronic Resource
    Electronic Resource
    Interaction between furosemide and the converting enzyme inhibitor benazepril in healthy volunteers (1988)
    Springer
    European journal of clinical pharmacology 34 (1988), S. 465-468 
    Details
    ISSN: 1432-1041
    Keywords: benazepril ; furosemide ; converting enzyme inhibitor ; pharmacokinetics ; drug interaction ; blood pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Single oral doses of 10 mg converting enzyme inhibitor benazepril (CGS 14824A) and 40 mg furosemide were administered to 12 healthy male volunteers either separately or concomitantly. The pharmacokinetic parameters of benazepril were not influenced by coadministration of furosemide. Urinary excretion of total furosemide was significantly reduced by 10 to 20% in the presence of benazepril. This effect was considered clinically insignificant. Erect blood pressure decreased and pulse rate increased only during concomitant treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01046703
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    Paper (German National Licenses)
    Fulltext
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