Phase I clinical trial of the flavonoid quercetin : pharmacokinetics and evidence for in vivo tyrosine kinase inhibition
We have performed a Phase I clinical trial with the naturally occurring flavonoid quercetin (3,3',4',5,7-pentahydroxyflavone). Quercetin has antiproliferative activity in vitro and is known to inhibit signal transduction targets including tyrosine kinases, protein kinase C, and phosphatidyl inositol-3 kinase. Quercetin was administered by short i.v. infusion at escalating doses initially at 3-week intervals. The first dose level was 60 mg/m2; at the 10th dose level of 1700 mg/m2, dose-limiting nephrotoxicity was encountered, but no myelosuppression. At the preceding dose level of 1400 mg/m2, five patients were treated at 3-week intervals, and another eight patients were treated on a once-weekly schedule; overall, 2 of 10 evaluable patients had renal toxicity, 1 at grade 2 and 1 at grade 4. We therefore treated other patients at 945 mg/m2 (eight at 3-week intervals and six at weekly intervals); 3 of 14 patients had clinically significant renal toxicity, 2 patients with grade 2 and 1 patient with grade 3. Patients treated on the weekly schedule did not have cumulative renal impairment but did have a fall in the glomerular filtration rate of 19 +/- 8% in the 24 h after drug administration. We recommend 1400 mg/m2 as the bolus dose, which may be given either in 3-week or weekly intervals, for Phase II trials. Quercetin pharmacokinetics were described by a first-order two-compartment model with a median t(1/2)alpha of 6 min and median t(1/2)beta of 43 min. The median estimated clearance was 0.28 liter/min/m2, and median volume of distribution at steady state was 3.7 liter/m2. In 9 of 11 patients, lymphocyte protein tyrosine phosphorylation was inhibited following administration of quercetin at 1 h, which persisted to 16 h. In one patient with ovarian cancer refractory to cisplatin, following two courses of quercetin (420 mg/m2), the CA 125 had fallen from 295 to 55 units/ml, and in another patient with hepatoma, the serum alpha-fetoprotein fell. In conclusion, quercetin can be safely administered by i.v. bolus at a dose injection. The plasma levels achieved inhibited lymphocyte tyrosine kinase activity, and evidence of antitumor activity was seen.
Medienart: |
Artikel |
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Erscheinungsjahr: |
1996 |
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Erschienen: |
1996 |
Enthalten in: |
Zur Gesamtaufnahme - volume:2 |
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Enthalten in: |
Clinical cancer research : an official journal of the American Association for Cancer Research - 2(1996), 4 vom: 17. Apr., Seite 659-68 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Ferry, D R [VerfasserIn] |
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Themen: |
9IKM0I5T1E |
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Anmerkungen: |
Date Completed 10.02.1999 Date Revised 18.03.2022 published: Print Citation Status MEDLINE |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM09754079X |
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100 | 1 | |a Ferry, D R |e verfasserin |4 aut | |
245 | 1 | 0 | |a Phase I clinical trial of the flavonoid quercetin |b pharmacokinetics and evidence for in vivo tyrosine kinase inhibition |
264 | 1 | |c 1996 | |
336 | |a Text |b txt |2 rdacontent | ||
337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
338 | |a Band |b nc |2 rdacarrier | ||
500 | |a Date Completed 10.02.1999 | ||
500 | |a Date Revised 18.03.2022 | ||
500 | |a published: Print | ||
500 | |a Citation Status MEDLINE | ||
520 | |a We have performed a Phase I clinical trial with the naturally occurring flavonoid quercetin (3,3',4',5,7-pentahydroxyflavone). Quercetin has antiproliferative activity in vitro and is known to inhibit signal transduction targets including tyrosine kinases, protein kinase C, and phosphatidyl inositol-3 kinase. Quercetin was administered by short i.v. infusion at escalating doses initially at 3-week intervals. The first dose level was 60 mg/m2; at the 10th dose level of 1700 mg/m2, dose-limiting nephrotoxicity was encountered, but no myelosuppression. At the preceding dose level of 1400 mg/m2, five patients were treated at 3-week intervals, and another eight patients were treated on a once-weekly schedule; overall, 2 of 10 evaluable patients had renal toxicity, 1 at grade 2 and 1 at grade 4. We therefore treated other patients at 945 mg/m2 (eight at 3-week intervals and six at weekly intervals); 3 of 14 patients had clinically significant renal toxicity, 2 patients with grade 2 and 1 patient with grade 3. Patients treated on the weekly schedule did not have cumulative renal impairment but did have a fall in the glomerular filtration rate of 19 +/- 8% in the 24 h after drug administration. We recommend 1400 mg/m2 as the bolus dose, which may be given either in 3-week or weekly intervals, for Phase II trials. Quercetin pharmacokinetics were described by a first-order two-compartment model with a median t(1/2)alpha of 6 min and median t(1/2)beta of 43 min. The median estimated clearance was 0.28 liter/min/m2, and median volume of distribution at steady state was 3.7 liter/m2. In 9 of 11 patients, lymphocyte protein tyrosine phosphorylation was inhibited following administration of quercetin at 1 h, which persisted to 16 h. In one patient with ovarian cancer refractory to cisplatin, following two courses of quercetin (420 mg/m2), the CA 125 had fallen from 295 to 55 units/ml, and in another patient with hepatoma, the serum alpha-fetoprotein fell. In conclusion, quercetin can be safely administered by i.v. bolus at a dose injection. The plasma levels achieved inhibited lymphocyte tyrosine kinase activity, and evidence of antitumor activity was seen | ||
650 | 4 | |a Clinical Trial | |
650 | 4 | |a Clinical Trial, Phase I | |
650 | 4 | |a Journal Article | |
650 | 4 | |a Research Support, Non-U.S. Gov't | |
650 | 7 | |a Enzyme Inhibitors |2 NLM | |
650 | 7 | |a Quercetin |2 NLM | |
650 | 7 | |a 9IKM0I5T1E |2 NLM | |
650 | 7 | |a Protein-Tyrosine Kinases |2 NLM | |
650 | 7 | |a EC 2.7.10.1 |2 NLM | |
650 | 7 | |a Potassium |2 NLM | |
650 | 7 | |a RWP5GA015D |2 NLM | |
700 | 1 | |a Smith, A |e verfasserin |4 aut | |
700 | 1 | |a Malkhandi, J |e verfasserin |4 aut | |
700 | 1 | |a Fyfe, D W |e verfasserin |4 aut | |
700 | 1 | |a deTakats, P G |e verfasserin |4 aut | |
700 | 1 | |a Anderson, D |e verfasserin |4 aut | |
700 | 1 | |a Baker, J |e verfasserin |4 aut | |
700 | 1 | |a Kerr, D J |e verfasserin |4 aut | |
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