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Stranica 1 iz 913 rezultatima
Ubiquinol cytochrome c reductase (UQCRFS1) gene amplification in primary breast cancer core biopsy samples.
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OBJECTIVE
The ubiquinol cytochrome c reductase UQCRFS1 is a key subunit of the cytochrome bc1 complex (complex III) of the mitochondrial respiratory chain. The purpose of this study is to evaluate the significance of the ubiquinol cytochrome c reductase UQCRFS1 gene amplification in primary breast
Association of the C677T polymorphism in the methylenetetrahydrofolate reductase gene with breast cancer in a Mexican population.
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The methylenetetrahydrofolate reductase (MTHFR) gene plays an important role in the steps involved in the processing of amino acids. The analysis of polymorphisms in the MTHFR gene has revealed associations with cancer; in particular the C677T polymorphism, which has been suggested to affect folate
Folate intake, methylenetetrahydrofolate reductase polymorphisms, and breast cancer risk in women from the Malmö Diet and Cancer cohort.
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BACKGROUND
Single nucleotide polymorphisms (SNP) of the folate-metabolizing enzyme methylenetetrahydrofolate reductase (MTHFR) may modify associations between folate intake and breast cancer. We examined if the association between tertiles of dietary folate equivalents (DFE) and breast cancer was
Aldo-keto reductase 1C3 expression in MCF-7 cells reveals roles in steroid hormone and prostaglandin metabolism that may explain its over-expression in breast cancer.
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Aldo-keto reductase (AKR) 1C3 (type 5 17beta-hydroxysteroid dehydrogenase and prostaglandin F synthase), may stimulate proliferation via steroid hormone and prostaglandin (PG) metabolism in the breast. Purified recombinant AKR1C3 reduces PGD(2) to 9alpha,11beta-PGF(2), Delta(4)-androstenedione to
Elevation of glutathione, glutathione-reductase and nucleic acids in both normal tissues and tumour of breast cancer patients.
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The present study was carried out to determine the variation in reduced glutathione (GSH), glutathione-reductase (GSH-R), DNA and RNA contents between tumours and adjacent normal tissue surgically removed from patients with breast cancer. A highly significant increase in the content of these
Methylseleninic acid (MSA) inhibits 17β-estradiol-induced cell growth in breast cancer T47D cells via enhancement of the antioxidative thioredoxin/ thioredoxin reductase system.
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The purpose of this study was to clarify the cell growth inhibitory mechanism of human breast cancer cells caused by selenium (Se) compounds. In the presence of 17β-estradiol (E(2)) at physiological concentrations, growth of estrogen receptor α (ERα)-positive T47D cells was markedly inhibited by 1 ×
Methylenetetrahydrofolate reductase polymorphisms and breast cancer risk in Chinese population: a meta-analysis of 22 case-control studies.
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The association between methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms and breast cancer risk in the Chinese population has been widely reported, but results were inconsistent. In order to derive a more precise estimation of the relationship, a meta-analysis was performed. Eligible
HMG-CoA reductase expression in breast cancer is associated with a less aggressive phenotype and influenced by anthropometric factors.
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Although several studies have reported on the anti-tumoural properties exerted by 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMG-CoAR) inhibitors (statins), the in vivo expression of HMG-CoAR in human cancer has been considerably less investigated. In our study, we examined the
Reduced breast cancer risk with increasing serum folate in a case-control study of the C677T genotype of the methylenetetrahydrofolate reductase gene.
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Breast cancer risk may be associated with folate status or the C677T genotype of the methylenetetrahydrofolate reductase (MTHFR) gene. We compared serum folate concentrations and C677T genotype in 141 breast cancer patients and 109 age-matched controls. Serum folate was significantly lower in cases
5-alpha Reductase Inhibitors and risk of male breast cancer: a systematic review and meta-analysis.
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OBJECTIVE
To assess the relationship between 5α-reductase inhibitors (5ARIs) and the risk of male breast cancer (MBC).
METHODS
We systematically searched Medline via PubMed, Embase and the Cochrane Library Central Register up to May 2017 to identify published articles related to 5ARIs and the risk
Evidence of association between methylenetetrahydrofolate reductase gene and susceptibility to breast cancer: a candidate-gene association study in a South-eastern European population.
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The methylenetetrahydrofolate reductase (MTHFR) gene has been proposed as a candidate gene for breast cancer (BC). However, the specific role of MTHFR polymorphisms and haplotypes has not been fully clarified and replicated. We examined the association of two common MTHFR polymorphisms (C677T and
The association between methylenetetrahydrofolate reductase 677C>T polymorphisms and breast cancer susceptibility: A meta-analysis based on Chinese Han population.
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OBJECTIVE
The relationship between methylenetetrahydrofolate reductase (MTHFR) 677C>T polymorphisms and lung cancer susceptibility is controversial according to the case-control or cohort study. We perform this meta-analysis to evaluate the association between MTHFR 677C>T polymorphisms and lung
The V89L polymorphism in the 5-alpha-reductase type 2 gene and risk of breast cancer.
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Women with high androgen levels appear to be at increased risk for breast cancer. The 5-alpha-reductase type 2 enzyme (SRD5A2) is an important mediator of local androgen actions. The SRD5A2 gene contains a polymorphism leading to a valine to leucine change in codon 89 (V89L). The Leu allele has been
A meta-analysis of genotypes and haplotypes of methylenetetrahydrofolate reductase gene polymorphisms in breast cancer.
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The association between methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms and breast cancer risk has been extensively explored, but their results are conflicting rather than conclusive. To derive a more precise estimation, we carried out not only an updated meta-analysis but also a
Association Analysis of Methylenetetrahydrofolate Reductase Common Gene Polymorphisms with Breast Cancer Risk in an Iranian Population: A Case-Control Study and a Stratified Analysis
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Genetic polymorphisms in the methylenetetrahydrofolate reductase (MTHFR) gene may alter the risk of breast cancer. This study aimed to investigate the association of MTHFR C677T and A1298C genetic polymorphisms with breast cancer risk in case-control studies which was followed by stratified
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