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  • 1
    Electronic Resource
    Electronic Resource
    Effect of iron deficiency anaemia and its treatment on sulphadimidine absorption (1987)
    Springer
    European journal of clinical pharmacology 33 (1987), S. 323-325 
    Details
    ISSN: 1432-1041
    Keywords: iron deficiency anaemia ; sulphadimidine ; absorption ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The effect of iron deficiency anaemia and its treatment on the absorption of sulphadimidine has been investigated in adult patients. The absorption judged by total % of the dose excreted in urine and Cmax, tmax, AUC and Kabs in plasma, was not significantly different before and after iron therapy or correction of anaemia. However, sulphadimidine absorption by the anaemic patients was significantly greater than in normals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00637571
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  • 2
    Electronic Resource
    Electronic Resource
    Dopamine pharmacokinetics in critically ill newborn infants (1991)
    Springer
    European journal of clinical pharmacology 40 (1991), S. 593-597 
    Details
    ISSN: 1432-1041
    Keywords: Dopamine ; Newborns ; critically ill patients ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Dopamine is frequently used in critically ill newborn infants for treatment of shock and cardiac failure, but its pharmacokinetics has not been evaluated using a specific analytical method. Steady-state arterial plasma concentrations of dopamine were measured in 11 seriously ill infants receiving dopamine infusion, 5–20 μg · kg−1 · min−1, for presumed or proven sepsis and hypotensive shock. Steady-state concentrations of dopamine ranged from 0.013–0.3 μg/ml. Total body clearance averaged 115 ml · kg−1 · min−1. The apparent volume of distribution and elimination half life averaged 1.8 1 · kg−1 and 6.9 min, respectively. No relationship was observed between dopamine pharmacokinetics and gestational age, postnatal age or birthweight. Substantial interindividual variation was seen in dopamine pharmacokinetics in seriously ill infants, and plasma concentrations could not be predicted accurately from its infusion rate. Marked variation in clearance explains in part, the wide dose requirements of dopamine needed to elicit clinical response in critically ill newborn infants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00279976
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of iron deficiency anaemia and its treatment on single dose phenytoin bioavailability (1993)
    Springer
    European journal of clinical pharmacology 45 (1993), S. 387-388 
    Details
    ISSN: 1432-1041
    Keywords: Iron deficiency anaemia ; Phenytoin ; bioavailability ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Iron deficiency is a common nutritional deficiency, which leads to structural functional and enzymatic changes in the body that may affect the pharmacokinetics of drugs. The present study in 7 normal volunteers and 8 adult male patients with irondeficiency anaemia (IDA) was done to investigate the effect of iron deficiency and its treatment with total dose iron (TDI) on the bioavailability of a single dose of phenytoin. Phenytoin bioavailability was investigated before and 3 and 28 days after TDI. The bioavailability parameters Cmax, tmax, AUC and 2 h phenytoin concentrations were not significantly different in anaemic patients as compared to normal volunteers before or after treatment, except for an increase in tmax 28 days after TDI treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00265961
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  • 4
    Electronic Resource
    Electronic Resource
    Pharmacokinetics and Tissue Disposition in Monkeys of an Antisense Oligonucleotide Inhibitor of Ha-Ras Encapsulated in Stealth Liposomes (1999)
    Springer
    Pharmaceutical research 16 (1999), S. 1309-1315 
    Details
    ISSN: 1573-904X
    Keywords: antisense phosphorothioate oligonucleotide ; stealth liposome ; pharmacokinetics ; monkey ; capillary gel electrophoresis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Purpose. This study examined the pharmacokinetics and tissue distribution of an antisense oligonucleotide ISIS 2503, formulated in stealth (pegylated) liposomes (encapsulated) or in phosphate-buffered saline (unencapsulated). Methods. Encapsulated or unencapsulated ISIS 2503 was administered to rhesus monkeys by intravenous infusion. The concentrations of ISIS 2503 and metabolites in blood, plasma, and tissue samples were determined by capillary gel electrophoresis. Results. Plasma concentrations of encapsulated ISIS 2503 decreased mono-exponentially after infusion with a mean half-life of 57.8 hours. In contrast, the concentration of unencapsulated ISIS 2503 in plasma decreased rapidly with a mean half-life of 1.07 hours. Both encapsulated and unencapsulated ISIS 2503 distributed widely into tissues. Encapsulated ISIS 2503 distributed primarily to the reticulo-endothelial system and there were few metabolites observed. In contrast, unencapsulated ISIS 2503 distributed rapidly to tissue with highest concentration seen in kidney and liver. Nuclease-mediated metabolism was extensive for unencapsulated oligonucleotide in plasma and tissues. Conclusions. The data suggest that stealth liposomes protect ISIS 2503 from nucleases in blood and tissues, slow tissue uptake, and slow the rate of clearance from the systemic circulation. These attributes may make these formulations attractive for delivering oligonucleotides to sites with increased vasculature permeability such as tumors or sites of inflammation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1014822219133
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  • 5
    Electronic Resource
    Electronic Resource
    Pharmacokinetic Evaluation of Drug Interactions with Anti-Human Immunotrophic Virus (HIV) Drugs. III. 2′,3′-Dideoxycytidine (ddC) and Zidovudine in Monkeys (1992)
    Springer
    Pharmaceutical research 9 (1992), S. 224-227 
    Details
    ISSN: 1573-904X
    Keywords: anti-human immunotrophic virus (HIV) nucleosides ; drug interactions ; pharmacokinetics ; monkeys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A pharmacokinetic evaluation of a potential drug interaction between zidovudine (AZT) and dideoxycytidine (ddC) was conducted in monkeys. Each of six animals received 20 mg/kg of AZT intragastrically in the absence and presence of an intravenous steady-state dosage regimen of ddC. The regimen was designed to produce steady-state ddC plasma concentration of 1.77 µg/ml for 30 min. Plasma and urine samples were analyzed for AZT, its major glucuronide metabolite, GAZT, and ddC by HPLC techniques. Pharmacokinetic parameters for AZT and GAZT were calculated by non-compartmental methods. The mean apparent clearance of AZT was 1.40 and 1.78 L/hr/kg in the absence and presence of ddC, respectively. The mean AUC for GAZT was 36.39 µg-hr/ml in the absence of ddC and 28.81 µg-hr/ml in the presence of ddC. No statistical differences were found in these and other pharmacokinetic parameters in the absence and presence of ddC. The absence of an effect on AZT's pharmacokinetics by ddC is attributed to the primary metabolic and renal elimination pathways for AZT and ddC, respectively. The results of this study provide a rational basis to design combined AZT-ddC treatment regimens in AIDS patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018941507979
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  • 6
    Electronic Resource
    Electronic Resource
    In Vivo Evaluation of Biodegradable Progesterone Microspheres in Mares (1992)
    Springer
    Pharmaceutical research 9 (1992), S. 1502-1506 
    Details
    ISSN: 1573-904X
    Keywords: biodegradable microspheres ; polylactic acid ; progesterone ; pharmacokinetics ; pregnancy maintenance ; mares
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1015879400962
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