Zusammenfassung
Untersuchungen zur relativen und/oder absoluten Bioverfügbarkeit eines Arzneistoffes sowie Untersuchungen zur Bioäquivalenz sind wichtige Verfahren im Rahmen des Nachweises von Qualität, Wirksamkeit und Unbedenklichkeit von Arzneimitteln. Auch im Rahmen der nationalen Zulassung von pflanzlichen Arzneimitteln können in Deutschland entsprechende Daten gefordert werden; solche Untersuchungen können auch Bestandteil der toxikologischen und pharmakologischen Dokumentation sein. Studien zur absoluten Bioverfügbarkeit werden dabei für Phytopharmaka eher die Ausnahme sein und höchstens im Rahmen der Arzneiform-oder Arzneistoffentwicklung eine Rolle spielen. Untersuchungen zur relativen Bioverfügbarkeit können dagegen nicht nur bei der Entwicklung, sondern auch bei bereits zugelassenen Präparaten sinnvoll sein. Vergleichende Untersuchungen zur pharmazeutischen Äquivalenz (Wirkstofffreisetzung/Dissolution-Test) dienen der Charakterisierung der Arzneiform.
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Literatur
Baba S, Furuta T, Fujioka M, Goromaru T (1983) Studies on drug metabolism by use of isotopes XXVII: urinary metabolites of rutin in rats and the role of intestinal microflora in the metabolism of rutin. J Pharm Sci 72: 1155--1158
Baba S, Furuta T, Horie M, Nakagawa H (1981) Studies on drug metabolism by use of isotopes XXVI: Determination of urinary metabolites of rutin in humans. J Pharm Sci 70: 780–782
Biber A, Fischer H, Romer A, Chatterjee SS (1998) Oral bioavailability of hyperforin from hypericum extracts in rats and human volunteers. Pharmacopsychiatry 31 Suppl 1: 36–43
Bokkenheuser VD, Winter J, Cohen BI, O’Rourke S, Mosbach EH (1987) Hydrolysis of dietary flavonoid glycosides by strains of intestinal bacteroides from humans. Biochem J 248: 953–956
Bork PM, Bacher S, Schmitz ML, Kaspers U, Heinrich M (1999) Hypericin as a non-antioxidant inhibitor of NF-kappa B. Planta Med 65: 297–300
Butterweck V, Petereit F, Winterhoff H, Nahrstedt A (1998) Solubilized hypericin and pseudohypericin from Hypericum perforatum exert antidepressant activity in the forced swimming test. Planta Med 64: 291–294
Butterweck V, Wall A, Lieflander-Wulf U, Winterhoff H, Nahrstedt A (1997) Effects of the total extract and fractions of Hypericum perforatum in animal assays for antidepressant activity. Pharmacopsychiatry 30 Suppl 2: 117–124
Chatterjee SS, Bhattacharya SK, Wonnemann M, Singer A, Muller WE (1998) Hyperforin as a possible antidepressant component of hypericum extracts. Life Sci 63: 499–510
Crespy V, Manach C, Morand C, Besson C, Demigne C, Remesy C (1998) Intestinal absorption and metabolism of quercetin. XIXth International Conference on Polyphenols. Lille (France), vol 1, p 75
Day AJ, DuPont MS, Ridley S, Rhodes M, Rhodes MJ, Morgan MR, Williamson G (1998) Deglycosylation of flavonoid and isoflavonoid glycosides by human small intestine and liver ß-glucosidase activity. FEBS Lett 436: 71–75
De Smet PA, Brouwers JR (1997) Pharmacokinetic evaluation of herbal remedies. Basic introduction, applicability, current status and regulatory needs. Clin Pharmacokinet 32: 427–436
Dimpfel W, Schober F, Mannel M (1998) Effects of a methanolic extract and a hyperforin-enriched CO2 extract of St. John’s Wort (Hypericum perforatum) on intracerebral field potentials in the freely moving rat (Tele-Stereo-EEG). Pharmacopsychiatry 31 Suppl 1: 30–35
Firenzuoli F, Gori L (1999) Is the antidepressant effect of Hypericum extracts depending on their hyperforin content? Forsch Komplementarmed 6: 27
Gee J-M, Dupont MS, Rhodes M-JC, Johnson I-T (1998) Quercetin glucosides interact with the intestinal glucose transport pathway. Free Rad Biol Med 25: 19–25
Gräfe EU, Derendorf H, Veit M (1999) Pharmacokinetics and bioavailability of the flavonol quercetin in humans. Int J Clin Pharmacol Ther 37: 219–233
Gräfe EU, Pforte H, Mueller S, Teltscher K, Andrew B, Riethling AK, Drewelow B, Derendorf H, Jacobasch G, Veit M (1999) Relative bioavailability of the flavonol quercetin and quercetin glycosides in humans. Publication in preparation
Hagels H (1996) Analytische, pharmazeutische, phytochemische sowie inter-und intraindividuelle Untersuchungen zu Fagopyrum-Arten; Studie zur Pharmakokinetik des Rutins. Dissertation. Freie Universität Berlin
Ihme N, Kiesewetter H, Jung F, Hoffmann KH, Birk A, Muller A, Grutzner KI (1996) Leg oedema protection from a buckwheat herb tea in patients with chronic venous insufficiency: a single-centre, randomised, double-blind, placebo-controlled clinical trial. Eur J Clin Pharmacol 50: 443–447
Jankun J (1997) Why drinking green tea could prevent cancer. Nature 387: 561
Kaehler ST, Sinner C, Chatterjee SS, Philippu A (1999) Hyperforin enhances the extracellular concentrations of catecholamines, serotonin and glutamate in the rat locus coeruleus. Neurosci Lett 262: 199–202
Kim DH, Jung EA, Sohng IS, Han JA, Kim TH, Han MJ (1998) Intestinal bacterial metabolism of flavonoids and its relation to some biological activities. Arch Pharm Res 21: 17–23
Manach C, Morand C, Crespy V, Demigne C, Texier O, Regerat F, Remesy C (1998) Quercetin is recovered in human plasma as conjugated derivatives which retain antioxidant properties. FEBS Lett 426: 331–336
Merfort I, Heilmann J, Weiss M, Pietta P, Gardana C (1996) Radical scavenger activity of three flavonoid metabolites studied by inhibition of chemiluminescence in human PMNs. Planta Med 62: 289–292
Middleton E, Kandaswami C (1993) The impact of plant flavonoids on mammalian biology: Implications for immunity, inflammation and cancer. In: Harborne JB (ed) The Flavonoids: Advances in research since 1986. Chapman & Hall, London
Muller WE, Singer A, Wonnemann M, Hafner U, Rolli M, Schafer C (1998) Hyperforin represents the neurotransmitter reuptake inhibiting constituent of hypericum extract. Pharmacopsychiatry 31 Suppl 1: 16–21
Olthof MR, Hollman PC, Katan MB (1998) Absorption and excretion of quercetin glucosides in man. XIXth International Conference on Polyphenols. Lille (France), vol 1, p 69
Piskula MK, Terao J (1998) Quercetin’s solubility affects its accumulation in rat plasma after oral administration. J Agric Food Chem 46: 4313–4317
Sawai Y, Kohsaka K, Nishiyama Y, Ando K (1987) Serum concentrations of rutoside metabolites after oral administration of a rutoside formulation to humans. Drug Res 37: 729–732
Scheline RR (1991) CRC Handbook of mammalian metabolism of plant compounds. CRC Press, Boca Raton
Schilcher H, Hagels H (1996) Zur Pharmakokinetik und zum Metabolismus von Flavonoiden. In: Loew D, Rietbrock N (Hrsg) Phytopharmaka II: Forschung und klinische Anwendung. Steinkopff, Darmstadt
Simmen U, Burkard W, Berger K, Schaffner W, Lundstrom K (1999) Extracts and constituents of Hypericum perforatum inhibit the binding of various ligands to recombinant receptors expressed with the Semliki Forest virus system. J Recept Signal Transduct Res 19: 59–74
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Gräfe, E.U., Veit, M. (1999). Untersuchungen zur systemischen Verfügbarkeit von pflanzlichen Wirkstoffen — unter welchen Voraussetzungen sind sie sinnvoll und wünschenswert?. In: Loew, D., Blume, H., Dingermann, T. (eds) Phytopharmaka V. Steinkopff, Heidelberg. https://doi.org/10.1007/978-3-642-58709-2_8
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DOI: https://doi.org/10.1007/978-3-642-58709-2_8
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