Lung cancer risk associated with selenium status is modified in smoking individuals by Sep15 polymorphism.

2.50
Hdl Handle:
http://hdl.handle.net/10146/36732
Title:
Lung cancer risk associated with selenium status is modified in smoking individuals by Sep15 polymorphism.
Authors:
Jablonska, Ewa ( 0000-0002-3946-3964 ) ; Gromadzinska, Jolanta; Sobala, Wojciech ( 0000-0002-5451-9321 ) ; Reszka, Edyta ( 0000-0003-2153-4864 ) ; Wasowicz, Wojciech ( 0000-0002-2991-9040 )
Abstract:
BACKGROUND: Selenium (Se) is a trace element suggested to act chemopreventive in lung cancer. The mechanism by which Se suppresses tumour development may be associated with some of the functions of selenoproteins, including 15 kDa selenoprotein (Sep15). This protein exhibits antioxidant properties and thus may be involved in the process of carcinogenesis. Recently, it has been shown that the genetic polymorphism of Sep15, resulting in different response of the protein to Se, is associated with the risk of breast and head and neck cancers. AIM OF THE STUDY: The aim of the study was to investigate the possible association between lung cancer risk and Sep15 polymorphism in combination with Se status in the Polish population. METHODS: The study concerned 325 cases and 287 controls. All the participants were smokers. Plasma Se concentration was determined using graphite furnace atomic absorption spectrometry, and Sep15 polymorphism (1125 G/A transition within 3'-untranslated region) was detected with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. RESULTS: The adjusted odds ratios (ORs) for lung cancer cases, compared to individuals with Sep15 wild type variant (GG), were: 0.91 (95% CI: 0.64-1.32) for the heterozygous variant (GA) and 0.80 (95% CI: 0.39-1.65) for the homozygous variant (AA). Although plasma Se concentration was statistically lower in lung cancer cases (49.4 +/- 17.4 ng/ml) compared to controls (53.3 +/- 14.0 ng/ml, p < 0.002), the analysis of the joint effect of Sep15 polymorphism and Se status for lung cancer development revealed that lung cancer risk differed between the Se15 genotype groups. An increasing Se concentration was associated with a decreased risk in all individuals; however, at Se concentration above 80 ng/ml, the risk started to increase in individuals possessing the Sep15 1125 GG or GA genotype. CONCLUSIONS: It appears that among smoking individuals, those with the Sep15 1125 AA genotype may benefit most from a higher Se intake, whereas in those with the GG or GA genotype, a higher Se status may increase the risk for lung cancer.
Citation:
Eur. J. Nutr. 2008, 47 (1):47-54
Journal:
European Journal of Nutrition
Issue Date:
Feb-2008
URI:
http://hdl.handle.net/10146/36732
DOI:
10.1007/s00394-008-0696-9
PubMed ID:
18239845
Additional Links:
http://www.springerlink.com/content/63514v6425808t63/
Type:
Article
Language:
en
ISSN:
1436-6207
Sponsors:
This study was supported by an internal grant (IMP 1.3/2006) and by the ECNIS Network of Excellence (Contract No. 513943/UE).
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Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorJablonska, Ewaen
dc.contributor.authorGromadzinska, Jolantaen
dc.contributor.authorSobala, Wojciechen
dc.contributor.authorReszka, Edytaen
dc.contributor.authorWasowicz, Wojciechen
dc.date.accessioned2008-08-28T10:11:53Zen
dc.date.available2008-08-28T10:11:53Zen
dc.date.issued2008-02en
dc.identifier.citationEur. J. Nutr. 2008, 47 (1):47-54en
dc.identifier.issn1436-6207en
dc.identifier.pmid18239845en
dc.identifier.doi10.1007/s00394-008-0696-9en
dc.identifier.urihttp://hdl.handle.net/10146/36732en
dc.description.abstractBACKGROUND: Selenium (Se) is a trace element suggested to act chemopreventive in lung cancer. The mechanism by which Se suppresses tumour development may be associated with some of the functions of selenoproteins, including 15 kDa selenoprotein (Sep15). This protein exhibits antioxidant properties and thus may be involved in the process of carcinogenesis. Recently, it has been shown that the genetic polymorphism of Sep15, resulting in different response of the protein to Se, is associated with the risk of breast and head and neck cancers. AIM OF THE STUDY: The aim of the study was to investigate the possible association between lung cancer risk and Sep15 polymorphism in combination with Se status in the Polish population. METHODS: The study concerned 325 cases and 287 controls. All the participants were smokers. Plasma Se concentration was determined using graphite furnace atomic absorption spectrometry, and Sep15 polymorphism (1125 G/A transition within 3'-untranslated region) was detected with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. RESULTS: The adjusted odds ratios (ORs) for lung cancer cases, compared to individuals with Sep15 wild type variant (GG), were: 0.91 (95% CI: 0.64-1.32) for the heterozygous variant (GA) and 0.80 (95% CI: 0.39-1.65) for the homozygous variant (AA). Although plasma Se concentration was statistically lower in lung cancer cases (49.4 +/- 17.4 ng/ml) compared to controls (53.3 +/- 14.0 ng/ml, p < 0.002), the analysis of the joint effect of Sep15 polymorphism and Se status for lung cancer development revealed that lung cancer risk differed between the Se15 genotype groups. An increasing Se concentration was associated with a decreased risk in all individuals; however, at Se concentration above 80 ng/ml, the risk started to increase in individuals possessing the Sep15 1125 GG or GA genotype. CONCLUSIONS: It appears that among smoking individuals, those with the Sep15 1125 AA genotype may benefit most from a higher Se intake, whereas in those with the GG or GA genotype, a higher Se status may increase the risk for lung cancer.en
dc.description.sponsorshipThis study was supported by an internal grant (IMP 1.3/2006) and by the ECNIS Network of Excellence (Contract No. 513943/UE).en
dc.language.isoenen
dc.relation.urlhttp://www.springerlink.com/content/63514v6425808t63/en
dc.subjectSep15en
dc.subject15 kDa selenoproteinen
dc.subjectseleniumen
dc.subjectlung canceren
dc.subject.meshAdulten
dc.subject.meshAgeden
dc.subject.meshCase-Control Studiesen
dc.subject.meshFemaleen
dc.subject.meshGenotypeen
dc.subject.meshHumansen
dc.subject.meshLung Neoplasmsen
dc.subject.meshMaleen
dc.subject.meshMiddle Ageden
dc.subject.meshNutritional Statusen
dc.subject.meshOdds Ratioen
dc.subject.meshPolanden
dc.subject.meshPolymerase Chain Reactionen
dc.subject.meshPolymorphism, Geneticen
dc.subject.meshPolymorphism, Restriction Fragment Lengthen
dc.subject.meshRisk Factorsen
dc.subject.meshSeleniumen
dc.subject.meshSelenoproteinsen
dc.subject.meshSmokingen
dc.titleLung cancer risk associated with selenium status is modified in smoking individuals by Sep15 polymorphism.en
dc.typeArticleen
dc.identifier.journalEuropean Journal of Nutritionen

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