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  • 1
    Electronic Resource
    Electronic Resource
    Role of oxidation polymorphism on blood and urine concentrations of amitriptyline and its metabolites in man (1982)
    Springer
    European archives of psychiatry and clinical neuroscience 232 (1982), S. 215-222 
    Details
    ISSN: 1433-8491
    Keywords: Amitriptyline ; Nortriptyline ; Hydroxylated metabolites ; Oxidation polymorphism ; Hydroxylation polymorphism ; Pharmacogenetics ; Interindividual differences ; Pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have measured the metabolites (demethylated and hydroxylated) of amitriptyline in a group of seven normal volunteers. They were phenotyped as extensive or poor metabolizers using debrisoquine and bufuralol. The results demonstrate that the oxidative metabolism (aliphatic hydroxylation) of amitriptyline is under the same genetic control as that of debrisoquine and bufuralol. However, phenotypic polymorphism cannot be used to predict amitriptyline blood concentration after a single oral dose, since the principal metabolic pathway of amitriptyline is demethylation and not aliphatic hydroxylation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02141782
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Elimination and pharmacological effects following single oral doses of 50 and 75 mg of amitriptyline in man (1983)
    Springer
    European archives of psychiatry and clinical neuroscience 233 (1983), S. 449-455 
    Details
    ISSN: 1433-8491
    Keywords: Amitriptyline ; Nortriptyline ; Hydroxylated metabolites ; Linear disposition ; Interindividual differences ; Pharmacological effects ; Psychomotor tests
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In a companion paper we described the disposition of a 75 mg single dose of amitriptyline in normal volunteers who were phenotyped as extensive or poor metabolizers of debrisoquine and bufuralol, and had a four-fold range in the oral clearance of the antidepressant, 50 mg of amitriptyline was also administered to the same volunteers. This paper compares the results after both doses and suggests that the disposition of amitriptyline is linear even in subjects with a low oral clearance. There was no relation between the pharmacokinetic data and the intensity of sedation or of psychomotor impairment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00342785
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Emulsification properties of chitosan (1998)
    Springer
    Colloid & polymer science 276 (1998), S. 1159-1165 
    Details
    ISSN: 1435-1536
    Keywords: Key words Chitosan ; HLB ; food emulsions ; cationic polyelectrolytes ; multiple emulsions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  The chitosans use as an emulsifier in food emulsions was explored. The properties of chitosan (air/solution surface activity, electrical conductivity, HLB) were studied. The obtained emulsions were stable multiple w/o/w emulsions, whose characteristics were explained on the basis of the emulsifier structure and solution properties. The reaction with an anionic surfactant, sodium dodecylsulfate, was also studied, giving a water-insoluble complex at a given surfactant/chitosan ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003960050359
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Study of the required HLB for the solubilization of cholesterol in aqueous solution (1998)
    Springer
    Colloid & polymer science 276 (1998), S. 87-91 
    Details
    ISSN: 1435-1536
    Keywords: Key words Cholesterol ; solubilization ; HLB ; mixed micelles ; emulsions ; critical micelle concentration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  The solubilization of cholesterol by anionic surfactant mixtures was studied as a function of their HLB values. The relationship between the logarithm of the critical micelle concentration and the HLB value of the mixtures was not linear, which was attributed to a lack of strict additivity of the HLB values. The solubilized cholesterol/surfactant ratio was determined and it was found to be higher than that in bile salts in all the studied surfactant mixtures. Below HLB=24, emulsions were obtained, and the remaining cholesterol was solid. Above that value, limpid solutions were obtained, giving a solubility maximum at HLB≈35. The non-solubilized cholesterol was mainly in the form of lamellar mesophase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003960050213
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    Paper (German National Licenses)
    Fulltext
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