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  • Lindqvist, Pelle G., et al. (författare)
  • Are active sun exposure habits related to lowering risk of type 2 diabetes mellitus in women, a prospective cohort study?
  • 2010
  • Ingår i: Diabetes Research and Clinical Practice. - Elsevier. - 1872-8227. ; 90:1, s. 109-114
  • Tidskriftsartikel (refereegranskat)abstract
    • Aim An inverse relationship exists between vitamin D levels and diabetes mellitus However, little is known about the correlation of sun exposure habits and type 2 diabetes mellitus (DM) Methods A South Swedish cohort study comprising 1000 women from each age group between 25 and 64 (n = 40,000) drawn from the Southern Swedish population registry 1990-1992 At the inception of the study 74% answered the inquiry (n = 29,518) and provided detailed information on their sun exposure habits and other variables A follow-up inquiry was sent 2000-2002 which 24,098 women answered The mean follow-up time was 11 years Logistic regression analysis was used and the main outcome was the relationship between type 2 DM and sun exposure habits. Results Our findings indicated that women with active sun exposure habits were at a 30% lower risk of having DM, as compared to those with non-active habits. There was an inverse relation between this risk reduction and BMI Conclusion Our investigation gives possible epidemiological explanation to ethnic and seasonal differences in type 2 DM and metabolic control The study supports that sunlight is involved in the glucose metabolism (C) 2010 Elsevier Ireland Ltd All rights reserved.
  • Lindqvist, P. G., et al. (författare)
  • Avoidance of sun exposure is a risk factor for all-cause mortality: results from the Melanoma in Southern Sweden cohort
  • 2014
  • Ingår i: Journal of Internal Medicine. - Wiley-Blackwell Publishing Ltd. - 1365-2796. ; 276:1, s. 77-86
  • Tidskriftsartikel (refereegranskat)abstract
    • Background. Sunlight exposure and fair skin are major determinants of human vitamin D production, but they are also risk factors for cutaneous malignant melanoma (MM). There is epidemiological evidence that all-cause mortality is related to low vitamin D levels. Methods. We assessed the avoidance of sun exposure as a risk factor for all-cause mortality for 29 518 Swedish women in a prospective 20-year follow-up of the Melanoma in Southern Sweden (MISS) cohort. Women were recruited from 1990 to 1992 and were aged 25 to 64 years at the start of the study. We obtained detailed information at baseline on their sun exposure habits and potential confounders. Multivariable flexible parametric survival analysis was applied to the data. Results. There were 2545 deaths amongst the 29 518 women who responded to the initial questionnaire. We found that all-cause mortality was inversely related to sun exposure habits. The mortality rate amongst avoiders of sun exposure was approximately twofold higher compared with the highest sun exposure group, resulting in excess mortality with a population attributable risk of 3%. Conclusion. The results of this study provide observational evidence that avoiding sun exposure is a risk factor for all-cause mortality. Following sun exposure advice that is very restrictive in countries with low solar intensity might in fact be harmful to women's health.
  • Lindqvist, Pelle G., et al. (författare)
  • Women with fair phenotypes seem to confer a survival advantage in a low UV milieu. A nested matched case control study
  • 2020
  • Ingår i: PLoS ONE. - Public Library of Science. - 1932-6203. ; 15:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Sun exposure in combination with skin pigmentation is the main determinant for vitamin D status. Human skin color seems to be adapted and optimized for regional sun ultraviolet (UV) intensity. However, we do not know if fair, UV-sensitive skin is a survival advantage in regions with low UV radiation. Methods A population-based nested case-control study of 29,518 Caucasian women, ages 25 to 64 years from Southern Sweden who responded to a questionnaire regarding risk-factors for malignant melanoma in 1990 and followed for 25 years. For each fair woman, defined as having red hair or freckles (n = 11,993), a control was randomly selected from all non-fair women from within the cohort of similar age, smoking habits, education, marital status, income, and comorbidity, i.e., 11,993 pairs. The main outcome was the difference in allcause mortality between fair and non-fair women in a low UV milieu, defined as living in Sweden and having low-to-moderate sun exposure habits. Secondary outcomes were mortality by sun exposure, and among those non-overweight. Results In a low UV milieu, fair women were at a significantly lower all-cause mortality risk as compared to non-fair women (log rank test p = 0.04) with an 8% lower all-cause mortality rate (hazard ratio [HR] = 0.92, 95% CI 0.84-1.0), including a 59% greater risk of dying from skin cancer among fair women (HR 1.59, 95% CI 1.26-2.0). Thus, it seem that the beneficial health effect from low skin coloration outweigh the risk of skin cancer at high latitudes. Conclusion In a region with low UV milieu, evolution seems to improve all-cause survival by selecting a fair skin phenotype, i.e., comprising fair women with a survival advantage.
  • Lindqvist, P. G., et al. (författare)
  • Avoidance of sun exposure as a risk factor for major causes of death : A competing risk analysis of the Melanoma in Southern Sweden cohort
  • 2016
  • Ingår i: Journal of Internal Medicine. - Wiley-Blackwell Publishing Ltd. - 0954-6820. ; 280:4, s. 375-387
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: Women with active sunlight exposure habits experience a lower mortality rate than women who avoid sun exposure; however, they are at an increased risk of skin cancer. We aimed to explore the differences in main causes of death according to sun exposure. Methods: We assessed the differences in sun exposure as a risk factor for all-cause mortality in a competing risk scenario for 29 518 Swedish women in a prospective 20-year follow-up of the Melanoma in Southern Sweden (MISS) cohort. Women were recruited from 1990 to 1992 (aged 25-64 years at the start of the study). We obtained detailed information at baseline on sun exposure habits and potential confounders. The data were analysed using modern survival statistics. Results: Women with active sun exposure habits were mainly at a lower risk of cardiovascular disease (CVD) and noncancer/non-CVD death as compared to those who avoided sun exposure. As a result of their increased survival, the relative contribution of cancer death increased in these women. Nonsmokers who avoided sun exposure had a life expectancy similar to smokers in the highest sun exposure group, indicating that avoidance of sun exposure is a risk factor for death of a similar magnitude as smoking. Compared to the highest sun exposure group, life expectancy of avoiders of sun exposure was reduced by 0.6-2.1 years. Conclusion: The longer life expectancy amongst women with active sun exposure habits was related to a decrease in CVD and noncancer/non-CVD mortality, causing the relative contribution of death due to cancer to increase.
  • Andrijevic, Goran, et al. (författare)
  • A fully integrated low-IF DVB-T receiver architecture
  • 2004
  • Ingår i: 2004 INTERNATIONAL SYMPOSIUM ON SYSTEM-ON-CHIP, PROCEEDINGS. - 0-7803-8558-6 ; s. 189-192
  • Konferensbidrag (refereegranskat)abstract
    • <p>We propose a fully integrated DVB-T receiver architecture for low cost CMOS implementation. The receiver uses a dual-IF architecture to cover the receive bands from 170 MHz to 862 MHz and a Low-IF of 4.57 MHz. Key performance values meet the DVB-T requirements with competitive performance (Sensitivity 72.5 dBm, Noise Figure 66 dB, Adjacent Channel Protection Ratio-ACPR=43dB, available SNR=28 dB) and suggest that low cost receivers are realistic in volume for the coming digital broadcasting systems.</p>
  • Andrijevic, Goran, et al. (författare)
  • Multistandard receiver for home networking and digital media
  • 2004
  • Ingår i: 22ND NORCHIP CONFERENCE, PROCEEDINGS. - NEW YORK : IEEE. - 0-7803-8510-1 ; s. 131-134
  • Konferensbidrag (refereegranskat)abstract
    • <p>We propose a fully integrated multistandard receiver architecture that fulfills coming media and networking needs of homes. The receiver uses a dual-IF architecture to cover receive bands from 170 MHz to 920 MHz and the Industrial, Scientific and Medical (ISM) band at 2.4GHz. Key performance values meet the DVB-T, Zigbee, Bluetooth and 802.11b requirements (Sensitivity -72.5dBm. available SNR=28dB. Noise Figure 6.7dB. Adjacent Channel Protection Ratio-ACPR=-44dB, IIP3 = -11 dBm).</p>
  • Antoniou, Antonis C., et al. (författare)
  • Reproductive and Hormonal Factors, and Ovarian Cancer Risk for BRCA1 and BRCA2 Mutation Carriers: Results from the International BRCA1/2 Carrier Cohort Study
  • 2009
  • Ingår i: Cancer Epidemiology Biomarkers & Prevention. - American Association for Cancer Research. - 1538-7755. ; 18:2, s. 601-610
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Several reproductive and hormonal factors are known to be associated with ovarian cancer risk in the general population, including parity and oral contraceptive (00 use. However, their effect on ovarian cancer risk for BRCA1 and BRCA2 mutation carriers has only been investigated in a small number of studies. Methods: We used data on 2,281. BRCA1. carriers and 1,038 BRCA2 carriers from the International BRCA1/2 Carrier Cohort Study to evaluate the effect of reproductive and hormonal factors on ovarian cancer risk for mutation carriers. Data were analyzed within a weighted Cox proportional hazards framework. Results: There were no significant differences in the risk of ovarian cancer between parous and nulliparous carriers. For parous BRCA1 mutation carriers, the risk of ovarian cancer was reduced with each additional full-term pregnancy (P trend = 0.002). BRCA1 carriers who had ever used OC were at a significantly reduced risk of developing ovarian cancer (hazard ratio, 0.52; 95% confidence intervals, 0.37-0.73; P = 0.0002) and increasing duration of OC use was associated with a reduced ovarian cancer risk (P trend = 0.0004). The protective effect of OC use for BRCA1 mutation carriers seemed to be greater among more recent users. Tubal ligation was associated with a reduced risk of ovarian cancer for BRCA1 carriers (hazard ratio, 0.42; 95% confidence intervals, 0.22-0.80; P = 0.008). The number of ovarian cancer cases in BRCA2 mutation carriers was too small to draw definitive conclusions. Conclusions: The results provide further confirmation that OC use, number of full-term pregnancies, and tubal ligation are associated with ovarian cancer risk in BRCA1 carriers to a similar relative extent as in the general population. (Cancer Epidemiol Biomarkers Prev 2009;18(2):601-10)
  • Attner, Bo, et al. (författare)
  • Cancer among patients with diabetes, obesity and abnormal blood lipids: a population-based register study in Sweden.
  • 2012
  • Ingår i: Cancer Causes and Control. - Springer. - 1573-7225. ; 23:5, s. 769-777
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: To study how the incidence of cancer is related to diabetes, obesity or abnormal blood lipids. METHODS: Diagnosis of diabetes, obesity or abnormal blood lipids was studied 0-10 years prior to the diagnosis of cancer in 19,756 cases of cancer and in 147,324 controls matched regarding age, sex and domicile. RESULTS: Diabetes was significantly more common prior to diagnosis in patients with liver, pancreatic, colon and urinary tract/bladder cancer and in patients with breast cancer diagnosed with diabetes 0-4 years prior to the cancer diagnosis. A lower risk of diabetes was seen in patients with prostate carcinoma among individuals with diabetes diagnosed 5-10 years prior to the cancer diagnosis. The findings remained after adjusting for obesity and high blood lipids. Obesity was significantly more common in patients with endometrial, colon and kidney cancer and with breast cancer above the age of 60 years in those where obesity was diagnosed close to the diagnosis of cancer. High blood lipids were significantly more common in patients with ovarian cancer and less common in patients with breast cancer. CONCLUSIONS: The study confirms some previous findings concerning comorbidity and cancer and highlights some new ones.
  • Barrett, Jennifer H., et al. (författare)
  • Fine mapping of genetic susceptibility loci for melanoma reveals a mixture of single variant and multiple variant regions
  • 2015
  • Ingår i: International Journal of Cancer. - John Wiley and Sons Inc.. - 0020-7136. ; 136:6, s. 1351-1360
  • Tidskriftsartikel (refereegranskat)abstract
    • At least 17 genomic regions are established as harboring melanoma susceptibility variants, in most instances with genome-wide levels of significance and replication in independent samples. Based on genome-wide single nucleotide polymorphism (SNP) data augmented by imputation to the 1,000 Genomes reference panel, we have fine mapped these regions in over 5,000 individuals with melanoma (mainly from the GenoMEL consortium) and over 7,000 ethnically matched controls. A penalized regression approach was used to discover those SNP markers that most parsimoniously explain the observed association in each genomic region. For the majority of the regions, the signal is best explained by a single SNP, which sometimes, as in the tyrosinase region, is a known functional variant. However in five regions the explanation is more complex. At the CDKN2A locus, for example, there is strong evidence that not only multiple SNPs but also multiple genes are involved. Our results illustrate the variability in the biology underlying genome-wide susceptibility loci and make steps toward accounting for some of the missing heritability. What's new? In genome-wide association studies, researchers identify genetic variants that frequently associate with a particular disease, though the variants identified may not contribute to the molecular cause of the disease. This study took a closer look at 17 regions associated with melanoma, fine mapping the regions both in people with melanoma and in healthy controls. Though single SNPs account for the association in some regions, they found that in a few regions, several SNPs - and possibly multiple genes - contributed to the association signal. These findings illustrate the importance of not overlooking the interaction between multiple genetic markers when conducting such studies.
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