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  • 2000-2004  (1)
  • 1995-1999  (2)
  • Dihydroartemisinin  (2)
  • 3‐dimethy‐2‐imidazolidinone solvent system  (1)
Datenquelle
Materialart
Erscheinungszeitraum
  • 2000-2004  (1)
  • 1995-1999  (2)
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Pharmacokinetics and bioequivalence evaluation of three commercial tablet formulations of mefloquine when given in combination with dihydroartemisinin in patients with acute uncomplicated falciparum malaria (2000)
    Springer
    European journal of clinical pharmacology 55 (2000), S. 743-748 
    Details
    ISSN: 1432-1041
    Schlagwort(e): Key words Pharmacokinetics ; Bioequivalence ; Mefloquine ; Uncomplicated falciparum malaria ; Dihydroartemisinin
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Abstract Objective: To assess the pharmacokinetics and relative bioavailability/bioequivalence of three commercial tablet formulations of mefloquine, i.e. Lariam (reference formulation), Mephaquin 100 Lactab and Eloquin-250, when given sequentially after dihydroartemisinin in Thai patients with acute uncomplicated falciparum malaria. Methods: Twenty-nine Thai patients with acute uncomplicated falciparum malaria were randomised to receive an initial dose of 300 mg dihydroartemisinin, followed by 1250 mg mefloquine (at 24 h and 30 h after dihydroartemisinin) given as either Lariam (n=10 cases), Mephaquin (n=9 cases) or Eloquin-250 (n=10 cases). Serial blood samples were obtained up to day 42 after treatment with mefloquine. Mefloquine concentrations were determined in whole blood by means of ultraviolet high-performance liquid chromatography. The pharmacokinetic parameters of mefloquine were estimated using non-compartmental and compartmental analysis. Results: The three combination regimens were well tolerated. Patients in all treatment groups had a rapid initial response. However, nine patients (four and five cases in regimen containing Mephaquin 100 Lactab and Eloquin-250, respectively) had reappearance of parasitaemia during the follow-up period. Mefloquine from the three formulations showed significantly different pharmacokinetic and bioavailability metrics. Significantly lower peak plasma concentrations (Cmax) and areas under the plasma concentration–time curve (AUC; AUC0–48h, AUC0–7days, and total AUC) were observed with Mephaquin 100 Lactab than with the other two formulations. Mean values for relative bioavailability of the test to standard products were 49.1% (Mephaquin 100 Lactab) and 72.4% (Eloquine-250). Based on the criteria set, the bioavailability of the two test products (Mephaquin 100 Lactab and Eloquine-250) was considered non-equivalent to the reference product with respect to the rate (tmax, Cmax) and extent (AUC0–48h, AUC0–7days, total AUC) of mefloquine absorption.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002280050008
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  • 2
    Digitale Medien
    Digitale Medien
    Pharmacokinetic and bioequivalence evaluation of two generic formulations of oral artesunate (1998)
    Springer
    European journal of clinical pharmacology 53 (1998), S. 375-376 
    Details
    ISSN: 1432-1041
    Schlagwort(e): Key words Artesunate ; Dihydroartemisinin ; Pharmacokinetics ; Bioequivalence
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002280050397
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  • 3
    Digitale Medien
    Digitale Medien
    Reaction characteristics of cellulose in the LiCl/1,3‐dimethyl‐2‐imidazolidinone solvent system (1999)
    Springer
    Cellulose 6 (1999), S. 93-102 
    Details
    ISSN: 1572-882X
    Schlagwort(e): LiCl/1 ; 3‐dimethy‐2‐imidazolidinone solvent system ; homogeneous cellulose solution ; cellulose acetate ; O‐methylcellulose ; reaction characteristics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Abstract In order to elucidate the nature of the LiCl/1,3‐dimethy‐2‐imidazolidinone (DMI) solvent system as one of the homogeneous reaction media of cellulose, cellulose acetate (CA) and O‐methylcellulose (MC) were prepared using this solvent system, and the distribution of substituents within anhydroglucose units was examined by 13C‐NMR. It was found that (i) homogeneous cellulose solutions can be easily prepared by heating 2, 5–12 and 100 parts of weight of cellulose, LiCl, and DMI, respectively, and (ii) the relative reactivity of hydroxyl groups is in the order C‐6 〉 C‐2 〉 C‐3 for both CA and MC. A remarkable feature of this solvent system is that the reaction efficiency in etherification is very high compared with other homogeneous solvent systems.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1009208417954
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