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Página 1 a partir de 84 resultados
[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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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
Correlation Between Methylenetetrahydrofolate Reductase (MTHFR) C677T Polymorphisms and Pemetrexed Chemotherapy Efficacy/Toxicity in Non-Squamous Non-Small Cell Lung Cancer.
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BACKGROUND In the present study, we aimed to retrospectively analyze the correlation between toxicity of pemetrexed (PEM) chemotherapy and methylenetetrahydrofolate reductase (MTHFR) C677T polymorphisms in patients with advanced non-squamous non-small cell lung cancer (non-sq NSCLC). MATERIAL AND
Metabolism and drug interactions of 3-hydroxy-3-methylglutaryl coenzyme A-reductase inhibitors (statins).
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3-Hydroxy-3-methylglutaryl coenzyme A (HMG-CoA)-reductase inhibitors (statins) are mainly considered for long-term use and often constitute part of a multiple-drug regime. Besides common adverse drug effects, such as nausea, abdominal discomfort and headaches, all statins harbour the risk of
Tolerance and pharmacokinetics of single-dose atorvastatin, a potent inhibitor of HMG-CoA reductase, in healthy subjects.
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Tolerance and pharmacokinetics after single-dose administration of atorvastatin, an investigational inhibitor of HMG-CoA reductase, were examined in 22 healthy volunteers in a three-period, partially-blinded study. Participants received capsule and solution doses of atorvastatin (0.5 to 120 mg) and
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.
Multiple-dose pharmacokinetics, pharmacodynamics, and safety of atorvastatin, an inhibitor of HMG-CoA reductase, in healthy subjects.
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This study examined the pharmacokinetics, pharmacodynamics, and safety of atorvastatin, an investigational inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, in 50 healthy subjects by means of a randomized, double-blind parallel-group design. Volunteers received rising single
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,
Pharmacokinetic properties of rosuvastatin after single-dose, oral administration in Chinese volunteers: a randomized, open-label, three-way crossover study.
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BACKGROUND
Rosuvastatin, a 3-hydroxy-3-methyl glutaryl coenzyme A reductase inhibitor ("statin"), has been marketed for the treatment of patients with dyslipidemia.
OBJECTIVE
The objective of this study was to assess the dose proportionality and pharmacokinetic (PK) properties of rosuvastatin after
Serenoa repens (Permixon). A review of its pharmacology and therapeutic efficacy in benign prostatic hyperplasia.
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Serenoa repens (Permixon) has been available for several years for the treatment of men with benign prostatic hyperplasia (BPH). The drug is the n-hexane lipidosterolic extract of the dwarf American palm (also known as Serenoa repens) and is a complex mixture of various compounds. A number of
[Evaluating the efficacy and tolerance of atorvastatin in hyperlipidemia in general practice (SWITCH Study)].
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Elevated levels of serum lipids and lipoproteins are known to play a major role in the development of atherosclerosis and subsequent coronary heart disease (CHD). In controlled clinical studies, atorvastatin (Sortis), a new 3-hydroxy-3-methyl-glutaryl-coenzyme-A (HMG-CoA)-reductase inhibitor, proved
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
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