Monitoring the administration of methotrexate in antimetabolite therapy.

نویسندگان

  • E Epstein
  • E S Baginski
  • B Zac
چکیده

An enzymatic method for the measurement of methotrexate (MTX) in serum is presented in which the inhibition of the enzyme dihydrofolate reductase by MTX is measured. Reduction of the substrate dihydrofolate by the enzyme and cofactor NADPH is lessened in direct proportion to the amount of MTX present. Measurements can be made in the "therapeutic range" of MTX which corresponds to the 10(-7) to 10(-8) M concentration of MTX in serum.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Pharmacokinetics and Biodistribution of Pegylated Methotrexate after IV Administration to Mice

The efficacy of methotrexate (MTX) as an antimetabolite chemotherapeutic agent highly depends on its blood circulation half-life. In our previous study, different conjugates of MTX (MTX-PEG) were synthesized, their physicochemical properties were investigated and MTX-PEG5000 was finally selected as optimum drug-conjugate for further investigations. In the current work, first the stability of MT...

متن کامل

Pharmacokinetics and Biodistribution of Pegylated Methotrexate after IV Administration to Mice

The efficacy of methotrexate (MTX) as an antimetabolite chemotherapeutic agent highly depends on its blood circulation half-life. In our previous study, different conjugates of MTX (MTX-PEG) were synthesized, their physicochemical properties were investigated and MTX-PEG5000 was finally selected as optimum drug-conjugate for further investigations. In the current work, first the stability of MT...

متن کامل

Medium and High-Dose Methotrexate-Induced Toxicity in Children with Acute Lymphoblastic Leukemia

Background: Methotrexate has an important role in treatment of acute leukemia. We measured methotrexate level in CSF and blood of children with acute lymphoblastic leukemia to determine complications and outcomes. Materials and Methods: One hundred and twenty patients (73 male, 47 female), with mean age at diagnosis of 6.1 years (11mo_15years) entered the study. Patients were divided into two...

متن کامل

Efficacy of Combination Therapy with Methotrexate and Misoprostol in Termination of Pregnancy in the First Trimester

Background: Induced abortion is the medical or surgical termination of pregnancy before fetal viability. It has maternal or fetal indications. The aim of the present study was to evaluate the efficacy of the combination of methotrexate and misoprostol for termination of the pregnancy in the first trimester. Methods: This analytic study was performed on 100 women at the first trimester of pregna...

متن کامل

Treatment of Severe Alopecia Areata Using Methotrexate as an Adjunctive Drug in Combination with Intravenous and Oral Corticosteroid

Background: Alopecia areata is one of the most common human autoimmune disorders and its severe types are refractory to all conventional therapies. Corticosteroids have been used in severe alopecia areata since 1950s but there is concern over complications caused by high doses of corticosteroids. Methotrexate has been used as an adjunctive therapy in some autoimmune disorders and has been propo...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Annals of clinical and laboratory science

دوره 6 4  شماره 

صفحات  -

تاریخ انتشار 1976