xeroderma pigmentosum/nicotina

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Nucleotide excision repair as a marker for susceptibility to tobacco-related cancers: a review of molecular epidemiological studies.

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DNA repair is a complicated biological process consisting of several distinct pathways that play a central role in maintaining genomic stability. Research on DNA repair and cancer risk is a vital, emerging field that recently has seen rapid advances facilitated by the completion of the Human Genome

Involvement of human heat shock protein 90 alpha in nicotine-induced apoptosis.

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There have been conflicting reports of the apoptotic effects of nicotine on human cells and those studies reporting nicotine-induced apoptosis have not unequivocally clarified the molecular mechanisms underlying the effect. However, we found here that human RSa cells, established from embryonic

Interaction of polymorphisms in xeroderma pigmentosum group C with cigarette smoking and pancreatic cancer risk.

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The aim of the present study was to evaluate the association between xeroderma pigmentosum group C (XPC) polymorphisms and pancreatic cancer (PC) risk. A total of 7 XPC tagging SNPs (tag-SNPs) were selected from the International HapMap Project Databases (rs2228001A/C, rs2470353G/C, rs2228000C/T,

Mutagenesis of xeroderma pigmentosum fibroblasts by acrolein.

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Acrolein, a short-chain aldehyde encountered as a component of tobacco smoke and as a ubiquitous environmental contaminant, was tested for its toxic and mutagenic effects toward human fibroblast cells. We found that human cells characterized by a deficiency in DNA repair (cells from xeroderma

Elevated hprt mutant frequency in circulating T-lymphocytes of xeroderma pigmentosum patients.

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The mutant frequency to 6-thioguanine resistance in circulating T-lymphocytes from 10 xeroderma pigmentosum patients (including complementation groups D and G and XP variants) has been determined. A highly significantly elevated frequency was observed, compared to age-matched, non-smoking control

Association of the DNA repair gene XPD Asp312Asn polymorphism with p53 gene mutations in tobacco-related non-small cell lung cancer.

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Lung cancer, a disease related mostly to tobacco smoke exposure and a leading cause of cancer-related death in industrialized countries, is frequently associated with mutations in the p53 tumor suppressor gene. Genetic differences resulting in inter-individual variation in DNA repair capacity may in

Association of single nucleotide polymorphisms of ERCC1 and XPF with colorectal cancer risk and interaction with tobacco use.

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We investigated the association between polymorphisms in excision repair cross-complementation group 1 (ERCC1) (rs3212986, rs2298881 and rs11615) and xeroderma pigmentosum-complementation group F (XPF) (rs2276466 and rs6498486) and risk of colorectal cancer. A 1:1 matched case-control study was

Polymorphism of Xeroderma Pigmentosum group G and the risk of lung cancer and squamous cell carcinomas of the oropharynx, larynx and esophagus.

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We investigated the effects of XPG His1104Asp polymorphism (rs17655) on the risk of lung cancer and squamous cell carcinomas of the oropharynx, larynx and esophagus (SCCOLE). This population-based case-control study involves 611 new cases of lung cancer, 601 new cases of oropharyngeal, laryngeal and

Polymorphisms of XPG/ERCC5 and risk of squamous cell carcinoma of the head and neck.

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OBJECTIVE Xeroderma pigmentosum group G (XPG) protein is essential for the nucleotide excision repair system, and genetic variations in XPG/ERCC5 that affect DNA repair capacity may contribute to the risk of tobacco-induced cancers, including squamous cell carcinoma of the head and neck (SCCHN). We

Polymorphisms in DNA damage binding protein 2 (DDB2) and susceptibility of primary lung cancer in the Chinese: a case-control study.

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DNA damage binding protein 2 (DDB2) is one of the major DNA repair proteins involved in the nucleotide excision repair (NER) pathway. Mutations in the DDB2 gene can cause a repair-deficiency syndrome xeroderma pigmentosum group E. Because tobacco carcinogens can cause DNA damage that is repaired by

Association between CCND1 and XPC polymorphisms and bladder cancer risk: a meta-analysis based on 15 case-control studies.

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Perturbations in cell cycle and DNA repair genes might affect susceptibility to cancer. The aim of this meta-analysis is to generate large-scale evidence to determine the degree to which common Cyclin D1 (CCND1) G870A (dbSNP: rs603965) and xeroderma pigmentosum group C (XPC) Ala499Val (dbSNP:

Polymorphisms in the XPC gene affect urinary bladder cancer risk: a case-control study, meta-analyses and trial sequential analyses.

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Compromised activity of the DNA repair enzymes may raise the risk of a number of cancers. We analyzed polymorphisms in the Xeroderma Pigmentosum, Complementation Group C (XPC) gene for their correlation with urinary bladder cancer. Ala499Val and Lys939Gln polymorphisms were genotyped in 234 urinary

XPD Asp312Asn polymorphism and esophageal cancer risk: an update meta-analysis based on 3928 cases and 6012 controls.

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BACKGROUND Although xeroderma pigmentosum group D (XPD) was reported to be related with esophageal cancer (EC) risk, the results remained inconsistent. The aim of this meta-analysis was to make a more precise estimation of the relationship between XPD Asp312Asn polymorphism and EC risk. METHODS We

Repair of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone-induced DNA pyridyloxobutylation by nucleotide excision repair.

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The tobacco-specific lung carcinogen, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) forms DNA methylating and pyridyloxobutylating species. In this study, the involvement of nucleotide excision repair (NER) in the repair of pyridyloxobutyl adducts was assessed using an in vitro NER assay with

Associations between XPC expression, genotype, and the risk of head and neck cancer.

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Squamous cell carcinoma of the head and neck (SCCHN) is a relatively rare cancer with a poor prognosis. In the present study, we investigated susceptibility biomarkers for SCCHN in 155 Koreans (73 SCCHN cases and 82 controls). Expression of the xeroderma pigmentosum group C (XPC) DNA-repair gene was

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