Lappuse 1 no 21 rezultātiem
OBJECTIVE
The use of uridine triacetate for the management of fluorouracil toxicity is reported.
CONCLUSIONS
A 55-year-old man with malignant neoplasm of the sigmoid colon (stage IIIC) was seen in an outpatient chemotherapy center for his first six-month regimen of leucovorin calcium, fluorouracil,
BACKGROUND
In the current Phase II study, the authors evaluated the association between genomic polymorphic variants in uridine diphosphate glucuronosyl transferase (UGT1A1), methylenetetrahydrofolate reductase (MTHFR), and thymidylate synthase (TS) genes, and the incidence of the adverse effects of
On December 11, 2015, the FDA approved uridine triacetate (VISTOGARD; Wellstat Therapeutics Corporation) for the emergency treatment of adult and pediatric patients following a fluorouracil or capecitabine overdose regardless of the presence of symptoms, and of those who exhibit early-onset, severe,
Increased susceptibility to 5-fluorouracil (5-FU)/capecitabine can lead to rapidly occurring toxicity caused by impaired clearance, dihydropyrimidine dehydrogenase deficiency, and other genetic variations in the enzymes that metabolize 5-FU. Life-threatening 5-FU overdoses occur because of infusion
A phase I study of a new floxuridine derivative, FF-705, was performed in patients with various types of solid tumors. Efficacy of single oral administration with dose range of 300 to 700 mg/body was studied in 12 patients. At a dose of 500 mg/body transient increases of s GOT and s GPT were noted
BACKGROUND
Tolerability to irinotecan may be explained by pharmacogenomic polymorphisms. The purpose of this pharmacogenetic trial was to study the relevance of thymidylate synthase (TS) genotyping and of the isoform 1A1 of uridine diphosphate glucuronosyltransferase (UGT1A1) in order to tailor a
The uridine analog 3-deazauridine has been given to 19 patients in a phase I and pharmacokinetic study. Only mild toxicity was seen at doses less than 1200 mg/m2/day for 5 days. At a dose of 1200 mg/m2/day x 5, leukopenia (mean wbc count nadir of 2650/mm3) was seen in nine of 12 patients and
A phase I trial of the uridine analog 3-deazauridine was undertaken in 44 adults with solid tumors. The drug was given as a 5-day continuous infusion repeated every 3-4 weeks. The dose-limiting toxic effect was granulocytopenia. Patients with prior nitrosourea therapy or extensive irradiation also
SN-38 is the active metabolite of irinotecan and it is metabolised through conjugation by uridine diphosphate glucuronosyl transferase (UGT1A1). The major toxicity of irinotecan therapy is diarrhoea, which has been related to the enzymatic activity of UGT1A1. We examined the influence of the UGT1A1
Hepatocellular carcinoma (HCC) remains one of the most common neoplasms in the world. Doxifluridine is an oral fluoropyrimidine derivative activated to 5-fluorouracil by uridine phosphorylase which is more expressed in malignant cells. Therefore, we conducted a phase II study to evaluate the
Dolutegravir is the most recent integrase strand transfer inhibitor approved for HIV-1 infection in both treatment-naïve and experienced patients. As a tricyclic carbamoyl pyridone analog, dolutegravir is rapidly absorbed and distributes through the cerebrospinal fluid. It is hepatically metabolized
Atazanavir is the first once-daily protease inhibitor for the treatment of human immunodeficiency virus type 1 infection and should be used only in combination therapy, as part of a highly active antiretroviral therapy (HAART) regimen. In addition to being the most potent protease inhibitor in
The biochemical modulators PALA, an inhibitor of aspartate transcarbamylase which depletes uridine nucleotide pools, and 6-methylmercaptopurine riboside (MMPR) which inhibits purine metabolism, selectively potentiate the antitumor activity of 5-fluorouracil (5-FU) in preclinical models. Based on a
BACKGROUND
Mycophenolate mofetil (MMF) is an ester prodrug of mycophenolic acid (MPA), so clinical studies measure the circulating plasma MPA concentration instead of MMF. MPA is extensively glucuronidated by several uridine diphosphate glycosyltransferases into an inactive 7-O-glucuronide and a
Little is known about the in vivo effects of inhibition of the mitochondrial pyrimidine de novo synthesis enzyme dihydroorotic acid dehydrogenase (DHO-DH). In mice a new inhibitor of DHO-DH, Brequinar sodium (DUP-785, NSC 368390) depleted the plasma uridine concentration to 40% within 2 h, followed