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Sökning: WFRF:(Johansson Roger) > (2010-2014)

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1.
  • Duell, Eric J, et al. (författare)
  • Vitamin C transporter gene (SLC23A1 and SLC23A2) polymorphisms, plasma vitamin C levels, and gastric cancer risk in the EPIC cohort
  • 2013
  • Ingår i: Genes & Nutrition. - : Springer Berlin/Heidelberg. - 1555-8932 .- 1865-3499. ; 8:6, s. 549-560
  • Tidskriftsartikel (refereegranskat)abstract
    • Vitamin C is known to protect mucosal tissues from oxidative stress and inhibit nitrosamine formation in the stomach. High consumption of fruits, particularly citrus, and higher circulating vitamin C concentrations may be inversely associated with gastric cancer (GC) risk. We investigated 20 polymorphisms in vitamin C transporter genes SCL23A1 and SCL23A2 and GC risk in 365 cases and 1,284 controls nested within the European Prospective Investigation into Cancer and Nutrition cohort. We also evaluated the association between these polymorphisms and baseline plasma vitamin C levels in a subset of participants. Four SNPs were predictors of plasma vitamin C levels (SLC23A1 rs11950646 and rs33972313; SLC23A2 rs6053005 and rs6133175) in multivariable linear regression models. One SNP (SLC23A2 rs6116569) was associated with GC risk, in particular non-cardia GC (OR = 1.63, 95 % CI = 1.11-2.39, based on 178 non-cardia cases), but this association was attenuated when plasma vitamin C was included in the logistic regression model. Haplotype analysis of SLC23A1 yielded no associations with GC. In SLC23A2, one haplotype was associated with both overall and non-cardia GC, another haplotype was associated with GC overall, and a third was associated with intestinal-type GC. Common variants in SLC23A1 and SLC23A2 may influence plasma vitamin C concentration independent of dietary intake, and variation in SLC23A2 may influence GC risk. Additional prospective studies in large populations and consortia are recommended. Investigation of variation in vitamin C transporter genes may shed light on the preventative properties of vitamin C in gastric carcinogenesis.
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2.
  • Gad, Helge, et al. (författare)
  • MTH1 inhibition eradicates cancer by preventing sanitation of the dNTP pool
  • 2014
  • Ingår i: Nature. - : Nature Publishing Group. - 0028-0836 .- 1476-4687. ; 508:7495, s. 215-221
  • Tidskriftsartikel (refereegranskat)abstract
    • Cancers have dysfunctional redox regulation resulting in reactive oxygen species production, damaging both DNA and free dNTPs. The MTH1 protein sanitizes oxidized dNTP pools to prevent incorporation of damaged bases during DNA replication. Although MTH1 is non-essential in normal cells, we show that cancer cells require MTH1 activity to avoid incorporation of oxidized dNTPs, resulting in DNA damage and cell death. We validate MTH1 as an anticancer target in vivo and describe small molecules TH287 and TH588 as first-in-class nudix hydrolase family inhibitors that potently and selectively engage and inhibit the MTH1 protein in cells. Protein co-crystal structures demonstrate that the inhibitors bindin the active site of MTH1. The inhibitors cause incorporation of oxidized dNTPs in cancer cells, leading to DNA damage, cytotoxicity and therapeutic responses in patient-derived mouse xenografts. This study exemplifies the non-oncogene addiction concept for anticancer treatment and validates MTH1 as being cancer phenotypic lethal.
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3.
  • Berggren, Lars, et al. (författare)
  • Skola och modernisering på Grönland
  • 2014
  • Ingår i: Vetenskapliga perspektiv på lärande, undervisning och utbildning i olika institutionella sammanhang : utbildningsvetenskaplig forskning vid Lunds universitet. - : Lunds universitet, Institutionen för utbildningsvetenskap. - 9789174738629 - 9789174738636 ; , s. 231-245
  • Bokkapitel (övrigt vetenskapligt)
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7.
  • Jakszyn, Paula 01, et al. (författare)
  • Dietary intake of heme iron and risk of gastric cancer in the European prospective investigation into cancer and nutrition study
  • 2012
  • Ingår i: International Journal of Cancer. - : John Wiley and Sons. - 0020-7136 .- 1097-0215. ; 130:11, s. 2654-2663
  • Tidskriftsartikel (refereegranskat)abstract
    • Even though recent studies suggest that a high intake of heme iron is associated with several types of cancer, epidemiological studies in relation to gastric cancer (GC) are lacking. Our previous results show a positive association between red and processed meat and non cardia gastric cancer, especially in Helicobacter pylori infected subjects. The aim of the study is to investigate the association between heme iron intake and GC risk in the European prospective investigation into cancer and nutrition (EURGAST-EPIC). Dietary intake was assessed by validated center-specific questionnaires. Heme iron was calculated as a type-specific percentage of the total iron content in meat intake, derived from the literature. Antibodies of H. pylori infection and vitamin C levels were measured in a sub-sample of cases and matched controls included in a nested case-control study within the cohort. The study included 481,419 individuals and 444 incident cases of GC that occurred during an average of 8.7 years of followup. We observed a statistically significant association between heme iron intake and GC risk (HR 1.13 95% CI: 1.011.26 for a doubling of intake) adjusted by sex, age, BMI, education level, tobacco smoking and energy intake. The positive association between heme iron and the risk of GC was statistically significant in subjects with plasma vitamin C <39 mmol/l only (log2 HR 1.54 95% CI (1.012.35). We found a positive association between heme iron intake and gastric cancer risk.
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8.
  • Johansson, Roger, et al. (författare)
  • Arbetarrörelse mellan integration och revolution
  • 2013
  • Ingår i: Malmö 1914 – en stad inför språnget till det moderna. - : Mezzo Media AB. - 9789163722868 ; , s. 296-311
  • Bokkapitel (populärvet., debatt m.m.)abstract
    • Arbetarrörelsen i Malmö 1914
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9.
  • Johansson, Roger, et al. (författare)
  • Ett märkesår i stadens historia
  • 2013
  • Ingår i: Malmö 1914 – en stad inför språnget till det moderna. - : Mezzo Media AB. - 9789163722868 ; , s. 4-19
  • Bokkapitel (populärvet., debatt m.m.)abstract
    • Historieskrivningen om Malmö 1914-2014
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10.
  • Johansson, Roger, et al. (författare)
  • Förord
  • 2014
  • Ingår i: Bedöma eller berömma : niondeklassares kamrat- och sjävbedömning vid ensemblemusicerande i musikundervisningen - niondeklassares kamrat- och sjävbedömning vid ensemblemusicerande i musikundervisningen. - : Institutionen för utbildningsvetenskap, Lunds universitet. ; 2014:1
  • Bokkapitel (övrigt vetenskapligt)
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