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1.
  • Lind, Ylva Sjoberg, et al. (författare)
  • Circulating levels of persistent organic pollutants (POPs) are associated with left ventricular systolic and diastolic dysfunction in the elderly
  • 2013
  • Ingår i: Environmental Research. - 0013-9351 .- 1096-0953. ; 123, s. 39-45
  • Tidskriftsartikel (refereegranskat)abstract
    • Background and objective: Major risk factors for congestive heart failure (CHF) are myocardial infarction, hypertension, diabetes, atrial fibrillation, smoking, left ventricular hypertrophy (LVH) and obesity. However, since these risk factors only explain part of the risk of CHF, we investigated whether persistent organic pollutants (POPs) might also play a role. Methods: In the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study, left ventricular ejection fraction, (EF), E/A-ratio and isovolumic relaxation time (IVRT), were determined by echocardiography and serum samples of 21 POPs were analyzed in serum measured by high-resolution chromatography coupled to high-resolution mass spectrometry (HRGC/HRMS) in 998 subjects all aged 70 years. Results: In this cross-sectional analysis, high levels of several of the polychlorinated biphenyls (PCB congeners 99, 118, 105, 138, 153, and 180) and octachlorodibenzo-p-dioxin (OCDD) were significantly related to a decreased EF. Some POPs were also related to a decreased E/A-ratio (PCBs 206 and 209). All the results were adjusted for gender, hypertension, diabetes, smoking, LVH and BMI, and subjects with myocardial infarction or atrial fibrillation were excluded from the analysis. Conclusions: Circulating levels of POPs were related to impairments in both left ventricular systolic and diastolic function independently of major congestive heart failure risk factors, suggesting a possible role of POPs in heart failure.
2.
  • Lind, Ylva Sjoeberg, et al. (författare)
  • Persistent organic pollutants and abnormal geometry of the left ventricle in the elderly
  • 2013
  • Ingår i: Journal of Hypertension. - Lippincott Williams & Wilkins. - 0263-6352. ; 31:8, s. 1547-1553
  • Tidskriftsartikel (refereegranskat)abstract
    • Background:Established risk factors for left ventricular hypertrophy (LVH) are hypertension, diabetes, and obesity. However, as these risk factors explain only part of the variation in left ventricular mass, we investigated whether persistent organic pollutants (POPs) might also play a role in LVH, because exposure to polychlorinated biphenyl 126 induced cardiac growth in rats.Methods:In the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS), left ventricular mass index (LVMI), relative wall thickness (RWT), and geometric groups of LVH, were determined by echocardiography and 21 POPs were measured by high-resolution chromatography coupled to high-resolution mass spectrometry (HRGC/HRMS) in 1016 individuals aged 70 years. All individuals with a history of myocardial infarction were excluded from analysis (n=72).Results:Several of the POPs were related to abnormal left ventricular geometry before adjustment for established risk factors, but lost in significance following adjustment. However, the pesticide hexachlorobenzene (HCB) levels were significantly related to RWT, and concentric left ventricular remodeling, also following adjustment for sex, blood pressure, antihypertensive treatment, diabetes, and BMI (P<0.0001).Conclusion:In this cross-sectional study, circulating levels of HCB were related to increased wall thickness of the left ventricle and concentric left ventricular remodeling, independently of LVH risk factors, suggesting a role of this environmental contaminant in abnormal growth of the left ventricle.
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3.
  • Forsberg, Lars A., et al. (författare)
  • Mosaic loss of chromosome Y in peripheral blood is associated with shorter survival and higher risk of cancer
  • 2014
  • Ingår i: Nature Genetics. - 1061-4036 .- 1546-1718. ; 46:6, s. 624-628
  • Tidskriftsartikel (refereegranskat)abstract
    • Incidence and mortality for sex-unspecific cancers are higher among men, a fact that is largely unexplained(1,2). Furthermore, age-related loss of chromosome Y (LOY) is frequent in normal hematopoietic cells(3,4), but the phenotypic consequences of LOY have been elusive(5-10). From analysis of 1,153 elderly men, we report that LOY in peripheral blood was associated with risks of all-cause mortality (hazards ratio (HR) = 1.91, 95% confidence interval (CI) = 1.17-3.13; 637 events) and non-hematological cancer mortality (HR = 3.62, 95% CI = 1.56-8.41; 132 events). LOY affected at least 8.2% of the subjects in this cohort, and median survival times among men with LOY were 5.5 years shorter. Association of LOY with risk of all-cause mortality was validated in an independent cohort (HR = 3.66) in which 20.5% of subjects showed LOY. These results illustrate the impact of post-zygotic mosaicism on disease risk, could explain why males are more frequently affected by cancer and suggest that chromosome Y is important in processes beyond sex determination. LOY in blood could become a predictive biomarker of male carcinogenesis.
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4.
  • Jobs, Elisabeth, et al. (författare)
  • Serum cathepsin S is associated with decreased insulin sensitivity and the development of diabetes type 2 in a community-based cohort of elderly men
  • 2013
  • Ingår i: Diabetes Care. - 0149-5992 .- 1935-5548. ; 36:1, s. 163-165
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE:To investigate associations between serum cathepsin S, impaired insulin sensitivity, defective insulin secretion, and diabetes risk in a community-based sample of elderly men without diabetes.RESEARCH DESIGN AND METHODS:Serum cathepsin S, insulin sensitivity (euglycemic-hyperinsulinemic clamp), and insulin secretion (early insulin response during an oral glucose tolerance test) were measured in 905 participants of the Uppsala Longitudinal Study of Adult Men (mean age, 71 years). Thirty participants developed diabetes during 6 years of follow-up.RESULTS:After adjustment for age, anthropometric variables, and inflammatory markers, higher cathepsin S was associated with decreased insulin sensitivity (regression coefficient per SD increase -0.09 [95% CI -0.14 to -0.04], P = 0.001), but no association with early insulin response was found. Moreover, higher cathepsin S was associated with a higher risk for developing diabetes (odds ratio per SD increase 1.48 [1.08-2.01], P = 0.01).CONCLUSIONS:Cathepsin S activity appears to be involved in the early dysregulation of glucose and insulin metabolism.
5.
  • Jobs, Elisabeth, et al. (författare)
  • Serum cathepsin S is associated with serum C-reactive protein and interleukin-6 independently of obesity in elderly men
  • 2010
  • Ingår i: Journal of Clinical Endocrinology and Metabolism. - 0021-972X .- 1945-7197. ; 95:9, s. 4460-4464
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: Cathepsin S has been suggested provide a mechanistic link between obesity and atherosclerosis, possibly mediated via adipose tissue-derived inflammation. Previous data have shown an association between circulating cathepsin S and inflammatory markers in the obese, but to date, community-based reports are lacking. Accordingly, we aimed to investigate the association between serum levels of cathepsin S and markers of cytokine-mediated inflammation in a community-based sample, with prespecified subgroup analyses in nonobese participants. METHODS: Serum cathepsin S, C-reactive protein (CRP), and IL-6 were measured in a community-based cohort of elderly men (Uppsala Longitudinal Study of Adult Men; mean age 71 years, n = 991). CRP and IL-6 were also measured at a reexamination after 7 yr. RESULTS: After adjustment for age, body mass index, fasting plasma glucose, diabetes treatment, systolic blood pressure, diastolic blood pressure, hypertension treatment, serum cholesterol, serum high-density lipoprotein cholesterol, prior cardiovascular disease, smoking, and leisure time physical activity, higher cathepsin S was associated with higher CRP (regression coefficient for 1 sd increase, 0.13; 95% confidence interval 0.07-0.19; P < 0.001) and higher serum IL-6 (regression coefficient for 1 sd increase, 0.08; 95% confidence interval 0.01-0.14; P = 0.02). These associations remained similar in normal-weight participants (body mass index <25 kg/m(2), n = 375). In longitudinal analyses, higher cathepsin S at baseline was associated with higher serum CRP and IL-6 after 7 yr. CONCLUSIONS: These results provide additional evidence for the interplay between cathepsin S and inflammatory activity and suggest that this association is present also in normal-weight individuals in the community.
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6.
  • Kumar, Jitender, et al. (författare)
  • Influence of persistent organic pollutants on oxidative stress in population-based samples
  • 2014
  • Ingår i: Chemosphere. - 0045-6535 .- 1879-1298. ; 114, s. 303-309
  • Tidskriftsartikel (refereegranskat)abstract
    • Persistent organic pollutants (POPs) are a large group of chemicals widely used and produced in various industrial applications. Many cell culture/animal studies have shown that POPs can induce oxidative stress. Since such data is lacking in humans, we conducted a large population-based study to analyze associations between POPs and oxidative stress markers. We measured following POPs; 16 polychlorinated biphenyls (PCBs), 5 organochlorine (OC) pesticides, octachlorinated dibenzo-p-dioxin, and polybrominated diphenyl ether 47, and oxidative stress markers; homocysteine, reduced [GSH] and oxidized glutathione [GSSG], glutathione ratio [GSSG/GSH], total glutathione, oxidized low-density lipoprotein [ox-LDL], ox-LDL antibodies, conjugated dienes, baseline conjugated dienes of LDL, and total anti-oxidative capacity in plasma samples collected from 992 70-year old individuals (50% women) from the population-based Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) cohort. Linear regression analyses were performed to study the associations between oxidative stress markers and summary measures of POPs including the total toxic equivalence (TEQ), sums of PCBs and BC pesticides (main exposures) while adjusting for potential confounders. In multivariable-adjusted analyses, sum of PCBs showed strong associations with ox-LDL (beta = 0.94; P = 2.9 * 10(-6)). Further, sum of PCBs showed association with glutathione-related markers (GSSG: beta = 0.01; P = 6.0 *10(-7); GSSG/GSH: beta = 0.002; P = 9.7 * 10(-10)), although in reverse direction. Other summary measures did not show any significant association with these markers. In our study of elderly individuals from the general population, we show that plasma levels of POPs are associated with markers of increased oxidative stress thereby suggesting that even low dose background exposure to POPs may be involved in oxidative stress.
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7.
  • Lee, Duk-Hee, et al. (författare)
  • Associations of persistent organic pollutants with abdominal obesity in the elderly : The Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study
  • 2012
  • Ingår i: Environment International. - Elsevier. - 0160-4120. ; 40, s. 170-178
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: In animal experiments, persistent organic pollutants (POPs) have induced visceral obesity. To address this possibility in humans, we evaluated associations between POPs and abdominal obesity both cross-sectionally and prospectively.Methods: Twenty-one plasma POPs (16 polychlorinated biphenyl (PCB) congeners, 3 organochlorine (OC) pesticides, 1 brominated diphenyl ether (BDE), and 1 dioxin) were measured at baseline in 970 participants aged 70 years of the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS), with prospective analyses in 511 participants re-examined after 5 years. Abdominal obesity was defined by an increased waist circumference.Results: In the cross-sectional analyses, concentrations of the less chlorinated PCBs, OC pesticides such as p,p'-DDE and dioxin had adjusted odds ratios of 2 to 3 for abdominal obesity. Many relations had inverted U-shapes rather than being linear, particularly in women. In contrast, concentrations of highly chlorinated PCBs were strongly inversely associated with abdominal obesity. In a single model including summary measures of the less chlorinated PCBs, highly chlorinated PCBs, and OC pesticides, both the positive associations and inverse associations strengthened. Similar but somewhat weaker associations were seen between POPs and risk of development of abdominal obesity in the prospective analyses.Conclusion: Using both a cross-sectional and a prospective design, low-dose exposure to less chlorinated PCBs, p,p'-DDE, and dioxin, were associated with existence or development of abdominal obesity, while highly chlorinated PCBs had an opposite association in an elderly population, despite the previous observation of higher incident diabetes associated with these same PCBs.
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8.
  • Lee, Duk-Hee, et al. (författare)
  • Does Mortality Risk of Cigarette Smoking Depend on Serum Concentrations of Persistent Organic Pollutants? Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) Study
  • 2014
  • Ingår i: PLoS ONE. - 1932-6203 .- 1932-6203. ; 9:5, s. e95937
  • Tidskriftsartikel (refereegranskat)abstract
    • Cigarette smoking is an important cause of preventable death globally, but associations between smoking and mortality vary substantially across country and calendar time. Although methodological biases have been discussed, it is biologically plausible that persistent organic pollutants (POPs) like polychlorinated biphenyls (PCBs) and organochlorine (OC) pesticides can affect this association. This study was performed to evaluate if associations of cigarette smoking with mortality were modified by serum concentrations of PCBs and OC pesticides. We evaluated cigarette smoking in 111 total deaths among 986 men and women aged 70 years in the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) with mean follow-up for 7.7 years. The association between cigarette smoking and total mortality depended on serum concentration of PCBs and OC pesticides (P value for interaction = 0.02). Among participants in the highest tertile of the serum POPs summary score, former and current smokers had 3.7 (95% CI, 1.5-9.3) and 6.4 (95% CI, 2.3-17.7) times higher mortality hazard, respectively, than never smokers. In contrast, the association between cigarette smoking and total mortality among participants in the lowest tertile of the serum POPs summary score was much weaker and statistically nonsignificant. The strong smoking-mortality association observed among elderly people with high POPs was mainly driven by low risk of mortality among never smokers with high POPs. As smoking is increasing in many low-income and middle-income countries and POPs contamination is a continuing problem in these areas, the interactions between these two important health-related issues should be considered in future research.
9.
  • Lee, Duk-Hee, et al. (författare)
  • Polychlorinated biphenyls and organochlorine pesticides in plasma predict development of type 2 diabetes in the elderly : the prospective investigation of the vasculature in Uppsala Seniors (PIVUS) study
  • 2011
  • Ingår i: Diabetes Care. - 0149-5992 .- 1935-5548. ; 34:8, s. 1778-1784
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: Persistent organic pollutants (POPs), lipophilic chemicals that accumulate mainly in adipose tissue, have recently been linked to type 2 diabetes. However, evidence from prospective studies is sparse. This study was performed to evaluate prospective associations of type 2 diabetes with selected POPs among the elderly.RESEARCH DESIGN AND METHODS: Nineteen POPs (14 polychlorinated biphenyl [PCB] congeners, 3 organochlorine pesticides, 1 brominated diphenyl ether, and 1 dioxin) were measured in plasma collected at baseline in 725 participants, aged 70 years, of the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS).RESULTS: After adjusting for known type 2 diabetes risk factors, including obesity, odds ratios (ORs) (95% CIs) for type 2 diabetes at age 75 years (n = 36) according to the quintiles of a summary measure of concentrations of PCBs (vs. the lowest quintile) were 4.5, 5.1, 8.8 (1.8-42.7), and 7.5 (1.4-38.8) (P(trend) <0.01). Among organochlorine pesticides, adjusted ORs across concentrations of trans-nonachlor showed that P(trend) = 0.03. Adjusted ORs (95% CIs) across quintiles of the sum of three organochlorine pesticides were 1.1, 1.6, 1.5, and 3.4 (1.0-11.7) (P(trend) = 0.03). Neither brominated diphenyl ether 47 nor dioxin was significantly associated with incident diabetes. The sum of PCBs improved reclassification significantly when added to traditional risk factors for diabetes.CONCLUSIONS: Despite the small number of incident cases, this study found that environmental exposure to some POPs substantially increased risk of future type 2 diabetes in an elderly population.
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10.
  • Lind, Lars, et al. (författare)
  • Circulating levels of perfluoroalkyl substances and prevalent diabetes in the elderly
  • 2014
  • Ingår i: Diabetologia. - 0012-186X .- 1432-0428. ; 57:3, s. 473-479
  • Tidskriftsartikel (refereegranskat)abstract
    • Several environmental contaminants, such as polychlorinated biphenyls, dioxins, bisphenol A and phthalates, have been linked to diabetes. We therefore investigated whether other kinds of contaminants, perfluoroalkyl substances (PFAS), also called perfluorinated compounds (PFCs), are also associated with diabetes. The Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study investigated 1,016 men and women aged 70 years. Seven PFAS were detected in almost all participant sera by ultra-high performance liquid chromatograph/tandem mass spectrometry. Diabetes was defined as use of hypoglycaemic agents or fasting glucose > 7.0 mmol/l. 114 people had diabetes. In the linear analysis, no significant relationships were seen between the seven PFAS and prevalent diabetes. However, inclusion of the quadratic terms of the PFAS revealed a significant non-linear relationship between perfluorononanoic acid (PFNA) and diabetes, even after adjusting for multiple confounders (OR 1.96, 95% CI 1.19, 3.22, p = 0.008 for the linear term and OR 1.25, 95% CI 1.08, 1.44, p = 0.002 for the quadratic term). Perfluorooctanoic acid (PFOA) also showed such a relationship (p = 0.01). PFOA was related to the proinsulin/insulin ratio (a marker of insulin secretion), but none of the PFAS was related to the HOMA-IR (a marker of insulin resistance) following adjustment for multiple confounders. PFNA was related to prevalent diabetes in a non-monotonic fashion in this cross-sectional study, supporting the view that this perfluoroalkyl substance might influence glucose metabolism in humans at the level of exposure seen in the general elderly population.
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