Biomaterial Database

Calculation of individual dosage regimen of cytosine arabinoside (ara-C) based on metabolite levels in leukemic cells. 1994

C Riva-Lavieille, and C Ressayre, and Y Barra, and Y Carcassonne, and A Iliadis

Faculté de Pharmacie, Groupe de Recherche sur les Cancers des Voies Aériennes, Grenoble, France.

Patients with acute nonlymphocytic leukemia (ANLL) were treated by continuous infusion of ara-C (100 mg/m2/d x 10 days). During ara-C treatment, cellular arabinofuranosyl cytosine triphosphate (ara-CTP) pharmacokinetics was assessed in the circulating blasts of these patients using a high-performance liquid chromatography (HPLC) and an associated radioimmunoassay. Since a strong correlation was found between achievement of complete remission and cellular ara-CTP levels, we propose a calculation scheme that allows steady-state adjustment of ara-CTP levels during administration of ara-C. To improve the complete remission rate in patients with low ara-CTP levels, we sought optimum ara-C dosing. In order to achieve an optimal therapeutic response, in vivo ara-CTP formation has to be > 50 microM in leukemic cells. Conversely, using the same pharmacokinetic approach, the infusion rate at which to administer ara-C in order to reach in vivo ara-CTP concentration threshold and to achieve complete remission could be calculated for each patient.

UI	MeSH Term	Description	Entries
D003561	Cytarabine	A pyrimidine nucleoside analog that is used mainly in the treatment of leukemia, especially acute non-lymphoblastic leukemia. Cytarabine is an antimetabolite antineoplastic agent that inhibits the synthesis of DNA. Its actions are specific for the S phase of the cell cycle. It also has antiviral and immunosuppressant properties. (From Martindale, The Extra Pharmacopoeia, 30th ed, p472)	Ara-C,Arabinofuranosylcytosine,Arabinosylcytosine,Cytosine Arabinoside,Aracytidine,Aracytine,Cytarabine Hydrochloride,Cytonal,Cytosar,Cytosar-U,beta-Ara C,Ara C,Arabinoside, Cytosine,Cytosar U,beta Ara C
D004305	Dose-Response Relationship, Drug	The relationship between the dose of an administered drug and the response of the organism to the drug.	Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001085	Arabinofuranosylcytosine Triphosphate	A triphosphate nucleotide analog which is the biologically active form of CYTARABINE. It inhibits nuclear DNA synthesis.	Ara-CTP,Arabinosylcytosine Triphosphate,Cytarabine Triphosphate,Cytosine Arabinoside Triphosphate,Ara CTP,Triphosphate, Arabinofuranosylcytosine,Triphosphate, Arabinosylcytosine,Triphosphate, Cytarabine,Triphosphate, Cytosine Arabinoside
D015470	Leukemia, Myeloid, Acute	Clonal expansion of myeloid blasts in bone marrow, blood, and other tissue. Myeloid leukemias develop from changes in cells that normally produce NEUTROPHILS; BASOPHILS; EOSINOPHILS; and MONOCYTES.	Leukemia, Myelogenous, Acute,Leukemia, Nonlymphocytic, Acute,Myeloid Leukemia, Acute,Nonlymphocytic Leukemia, Acute,ANLL,Acute Myelogenous Leukemia,Acute Myeloid Leukemia,Acute Myeloid Leukemia with Maturation,Acute Myeloid Leukemia without Maturation,Leukemia, Acute Myelogenous,Leukemia, Acute Myeloid,Leukemia, Myeloblastic, Acute,Leukemia, Myelocytic, Acute,Leukemia, Myeloid, Acute, M1,Leukemia, Myeloid, Acute, M2,Leukemia, Nonlymphoblastic, Acute,Myeloblastic Leukemia, Acute,Myelocytic Leukemia, Acute,Myelogenous Leukemia, Acute,Myeloid Leukemia, Acute, M1,Myeloid Leukemia, Acute, M2,Nonlymphoblastic Leukemia, Acute,Acute Myeloblastic Leukemia,Acute Myeloblastic Leukemias,Acute Myelocytic Leukemia,Acute Myelocytic Leukemias,Acute Myelogenous Leukemias,Acute Myeloid Leukemias,Acute Nonlymphoblastic Leukemia,Acute Nonlymphoblastic Leukemias,Acute Nonlymphocytic Leukemia,Acute Nonlymphocytic Leukemias,Leukemia, Acute Myeloblastic,Leukemia, Acute Myelocytic,Leukemia, Acute Nonlymphoblastic,Leukemia, Acute Nonlymphocytic,Leukemias, Acute Myeloblastic,Leukemias, Acute Myelocytic,Leukemias, Acute Myelogenous,Leukemias, Acute Myeloid,Leukemias, Acute Nonlymphoblastic,Leukemias, Acute Nonlymphocytic,Myeloblastic Leukemias, Acute,Myelocytic Leukemias, Acute,Myelogenous Leukemias, Acute,Myeloid Leukemias, Acute,Nonlymphoblastic Leukemias, Acute,Nonlymphocytic Leukemias, Acute