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Σελίδα 1 από 79 Αποτελέσματα
[Relationship of methylenetetrahydrofolate reductase C677T polymorphism and chemosensitivity to 5-fluorouracil in gastric carcinoma].
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OBJECTIVE
Methylenetrahydrofolate reductase (MTHFR) C677T polymorphism modifies enzyme activity and thus effects the level of 5, 10-methylenetetrahydrofolate (5,10-MTHR), which correlates with the tumor response to 5-fluorouracil (5-FU). This study was to evaluate the effect of MTHFR C677T
[Polymorphism of methylenetetrahydrofolate reductase and sensitivity of stomach cancer to fluoropyrimidine-based chemotherapy].
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OBJECTIVE
To investigate the relationship between polymorphisms of the methylenetetrahydrofolate reductase (MTHFR) C677T or A1298C and the response to fluoropyrimidine (5-FU)-based chemotherapy in advanced stomach cancer (SC).
METHODS
75 cases with advanced SC were analyzed. All patients were
A phase I study of meta-azidopyrimethamine ethanesulphonate (MZPES)--a new dihydrofolate reductase inhibitor.
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Σύνδεση εγγραφή
A total of 68 patients were treated in a phase I study of meta-azidopyrimethamine ethanesulphonate (MZPES)--a novel lipophilic dihydrofolate reductase (DHFR) antagonist. The dose was increased from 5.4 mg/m2 to 460 mg/m2 given as a 1-h infusion, with 460 mg/m2, 600 mg/m2 and 800 mg/m2 given as a
Novel insights into molecular chaperone regulation of ribonucleotide reductase.
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The molecular chaperones Hsp70 and Hsp90 bind and fold a significant proportion of the proteome. They are responsible for the activity and stability of many disease-related proteins including those in cancer. Substantial effort has been devoted to developing a range of chaperone inhibitors for
The safety evaluation of fluvastatin, an HMG-CoA reductase inhibitor, in beagle dogs and rhesus monkeys.
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Fluvastatin is a potent synthetic competitive inhibitor of beta-hydroxy-beta-methyl-glutaryl-coenzyme A (HMG-CoA) reductase, the rate-limiting enzyme in the biosynthetic pathway for hepatic cholesterol synthesis. The therapeutic indication is reduction of elevated total and low-density lipoprotein
Homozygous variants in pyrroline-5-carboxylate reductase 2 (PYCR2) in patients with progressive microcephaly and hypomyelinating leukodystrophy.
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Pyrroline-5-carboxylate reductase 2, encoded by PYCR2, is one of the three homologous enzymes that catalyze the last step of proline synthesis. Homozygous variants in PYCR2 have been reported in patients from multiple consanguineous families with hypomyelinating leukodystrophy 10 (HLD10) (MIM:
Phase I and pharmacokinetic study of the ribonucleotide reductase inhibitor, 3-aminopyridine-2-carboxaldehyde thiosemicarbazone, administered by 96-hour intravenous continuous infusion.
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OBJECTIVE
3-aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP; Triapine; Vion Pharmaceuticals Inc, New Haven, CT) is a potent inhibitor of ribonucleotide reductase, with activity in preclinical tumor model systems. A phase I trial was initiated to determine the dose-limiting toxicities,
Phase I and pharmacokinetic study of triapine, a potent ribonucleotide reductase inhibitor, administered daily for five days in patients with advanced solid tumors.
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OBJECTIVE
A Phase I study in patients with advanced cancer was conducted to determine the safety, pharmacokinetics, and maximum tolerated dose of Triapine, a new, potent small-molecule inhibitor of ribonucleotide reductase.
METHODS
Triapine was administered by 2-h i.v. infusion daily for 5 days.
Epalrestat: an aldose reductase inhibitor for the treatment of diabetic neuropathy.
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Diabetic neuropathy is one of the most common long-term complications in patients with diabetes mellitus, with a prevalence of 60-70% in the United States. Treatment options include antidepressants, anticonvulsants, tramadol, and capsaicin. These agents are modestly effective for symptomatic relief,
Polymorphisms of SLC19A1 80 G>A, MTHFR 677 C>T, and Tandem TS Repeats Influence Pharmacokinetics, Acute Liver Toxicity, and Vomiting in Children With Acute Lymphoblastic Leukemia Treated With High Doses of Methotrexate
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Introduction: High dose methotrexate (HD-Mtx) is highly effective and significantly improves overall acute lymphoblastic leukemia (ALL) patients survival. The pharmacodynamics of Mtx depends on the polymorphism of genes encoding proteins engaged in the folate metabolism pathway. The aim of
Effects of methylenetetrahydrofolate reductase and reduced folate carrier 1 polymorphisms on high-dose methotrexate-induced toxicities in children with acute lymphoblastic leukemia or lymphoma.
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The authors investigated whether high-dose methotrexate-induced toxicity differed according to the presence of methylenetetrahydrofolate reductase (MTHFR) or reduced folate carrier 1 (RFC1) genetic polymorphism. The authors studied 15 children with acute lymphoblastic leukemia or lymphoblastic
Effects of antiemetic drugs on glucose 6-phosphate dehydrogenase and some antioxidant enzymes.
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The aim of this study was to investigate effect of antiemetics on G6PD and antioxidant enzymes. Antiemetics are currently being used to reduce or prevent nausea and vomiting in patients. This is the first study to show effect of antiemetics on glucose-6-phosphate dehydrogenase (G6PD) and antioxidant
Low-dose Methotrexate Toxicity in the Setting of Vancomycin-induced Acute Kidney Injury
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Methotrexate is a disease-modifying anti rheumatic drug (DMARD) that is often used in low dosages as the first line drug for rheumatoid arthritis patients. The chemotherapeutic agent works by inhibiting dihydrofolate reductase, and the primary route of clearance of the drug is via the kidneys.
Investigation of molybdenum cofactor deficiency due to MOCS2 deficiency in a newborn baby.
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BACKGROUND
Molybdenum cofactor deficiency (MOCD) is a severe autosomal recessive neonatal metabolic disease that causes seizures and death or severe brain damage. Symptoms, signs and cerebral images can resemble those attributed to intrapartum hypoxia. In humans, molybdenum cofactor (MOCO) has been
The effect of granisetron on in vitro metabolism of doxorubicin, irinotecan and etoposide.
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OBJECTIVE
Doxorubicin, irinotecan and etoposide are all associated with the debilitating side-effects of nausea and vomiting, thereby necessitating concomitant antiemetic therapy. However, this may increase the potential for drug-drug interactions by inhibition or induction of the cytochrome P450
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