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Pharmacokinetic Study of S-1 in Patients in Whom Inulin Clearance Was Measured.
MedLine Citation:
PMID:  22722580     Owner:  NLM     Status:  Publisher    
Objective: This pharmacokinetic study of S-1 was conducted in patients in whom glomerular filtration rate (GFR) was directly measured to explore the possibility of adjusting the S-1 dose on the basis of GFR in patients with normal or nearly normal renal function. Methods: S-1 was given to 12 patients twice daily for 28 consecutive days followed by 14 days of rest, repeated every 6 weeks. GFR was measured on the basis of inulin clearance (CLin) before the first day of treatment. Results: The area under the time-concentration curve (AUC) of 5-fluorouracil (5-FU) correlated with that of 5-chloro-2,4-dihydroxypyridine (CDHP, r = 0.750, p = 0.005). The AUC of CDHP correlated with the measured 24-hour creatinine clearance (CLcr) per subject (r = -0.620, p = 0.032), but not with the CLin (r = -0.356, p = 0.257). The AUC of 5-FU did not correlate with either the 24-hour CLcr per subject (r = -0.401, p = 0.187) or with the CLin (r = -0.300, p = 0.351). Conclusion: Dosage adjustment based on the GFR does not reduce individual variations in 5-FU concentrations among patients with normal or nearly normal renal function who receive S-1.
Yuichi Ando; Kenji Kawada; Megumi Inada; Sachi Morita; Ayako Mitsuma; Yoshinari Yasuda; Mariko Hiramatsu; Yasushi Fujimoto; Ken-Ichi Fujita
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-21
Journal Detail:
Title:  Oncology     Volume:  83     ISSN:  1423-0232     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0135054     Medline TA:  Oncology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  38-44     Citation Subset:  -    
Copyright Information:
Copyright © 2012 S. Karger AG, Basel.
Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Japan.
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