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Träfflista för sökning "WFRF:(Lind Lars) ;srt2:(2005-2009)"

Sökning: WFRF:(Lind Lars) > (2005-2009)

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41.
  • Wikström, Johan, 1964-, et al. (författare)
  • Lower extremity artery stenosis distribution in an unselected elderly population and its relation to a reduced ankle-brachial index
  • 2009
  • Ingår i: Journal of vascular surgery. - : Elsevier BV. - 0741-5214. ; 50:2, s. 330-334
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: This study evaluated the distribution and degree of symmetry of lower extremity artery stenoses in an unselected elderly population and its relation to a reduced ankle-brachial index (ABI) measurement. METHODS: This was a population-based study set in a university hospital comprising 306 randomly selected 70-year-old individuals participating in the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study. Whole-body magnetic resonance angiography (MRA) and bilateral ABI measurements were performed in each participant. The prevalence of stenosis >/=50% was evaluated in nine different arterial segments in both legs: common iliac artery (CIA), external iliac artery (EIA), common femoral artery (CFA), superficial femoral artery (SFA), popliteal artery (PA), tibioperoneal trunk (TPTr), anterior tibial artery (ATA), posterior tibial artery (PTA), and peroneal artery. The relations between the prevalences of stenosis in different arterial segments in the right and left leg were assessed. An evaluation was made of the relation between a >/=50% stenosis and an ABI <0.9 in the different segments. RESULTS: The prevalence of stenosis was 0% to 21%. In all segments, a stenosis was more commonly found in one of the legs only than in both legs. The prevalence of >/=50% stenosis in the right leg only, left leg only, and both legs was 0.3%, 0.7%, and 0% in the CIA; 0.3%, 1.0%, and 0.7% in the EIA; 0%, 0%, and 0% in the CFA; 2.0%, 1.3%, and 0.7% in the SFA; 0.7%, 0.7%, and 0.3% in the PA; 1.0%, 0.7%, and 0% in the TPTr; 5.6%, 6.3%, and 8.6% in the ATA; 0.7%, 1.7%, and 0% in the peroneal artery; and in 2.0%, 2.7%, and 3.4% in the PTA. When the legs were compared, a significant correlation was found for the presence of a >/=50% stenosis in the EIA, SFA, PA, ATA, and PTA. Seventeen participants showed ABI <0.9. In logistic regression analysis with ABI <0.9 as dependent variable, stenosis in SFA, ATA, and PTA were the major independent variables to explain a low ABI in both of the legs. CONCLUSIONS: The distribution of stenosis differs substantially when legs are compared. Despite this difference, stenosis in SFA, ATA, and PTA was the major determinant of a low ABI in both of the legs.
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42.
  • Wohlin, Martin, et al. (författare)
  • Apolipoprotein E epsilon 4 genotype is independently associated with increased intima-media thickness in a recessive pattern
  • 2007
  • Ingår i: Lipids. - : Wiley. - 0024-4201 .- 1558-9307. ; 42:5, s. 451-456
  • Tidskriftsartikel (refereegranskat)abstract
    • Polymorphisms in the apolipoprotein E (Apo E) gene have been associated with lipid levels, carotid intima media thickness (CCA-IMT), inflammation and cardiovascular disease (CVD). Earlier findings suggested an association of the Apo E alleles with increased CCA-IMT following a recessive pattern. Whether associations might be independent of C-reactive protein (CRP), lipid levels and other CVD risk factors is not known. We investigated the relationships between Apo E (epsilon2, epsilon3 and epsilon4 alleles) and CCA-IMT, measured by B-mode ultrasound, in dominant and recessive models in a community-based sample of 437 men 75 years of age. In men homozygous for the epsilon4 allele CCA-IMT was significantly increased by 0.13 mm to 0.86 +/- 0.16 mm compared to 0.73 +/- 0.19 mm in non- epsilon4-carriers (P = 0.0012) and 0.73 +/- 0.21 mm in epsilon4 heterozygous (P = 0.0044) in unadjusted recessive models. The association between Apo E epsilon4 genotype and CCA-IMT was independent of Apo E epsilon2 and Apo E epsilon3 alleles, CRP, lipid variables (TG, LDL, HDL) and other CVD risk factors (smoking, hypertension, body mass index, diabetes) (P = 0.018). No relations between Apo E genotype and CCA-IMT were observed in dominant models. No significant associations between the Apo E epsilon2 and epsilon3 alleles and CCA-IMT were found. In this study, men homozygous with the ApoE epsilon4 allele had thicker CCA-IMT, independently of Apo E epsilon2 and epsilon3 alleles, CRP, lipid variables (TG, LDL, HDL) and other CVD risk factors (smoking, hypertension, body mass index, diabetes), suggesting CCA-IMT to be modified by the ApoE epsilon4 genotype in a recessive pattern.
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43.
  • Adiyaman, Ahmet, et al. (författare)
  • Determinants of the ambulatory arterial stiffness index in 7604 subjects from 6 populations
  • 2008
  • Ingår i: Hypertension. - 1524-4563. ; 52:6, s. 1038-44
  • Tidskriftsartikel (refereegranskat)abstract
    • The ambulatory arterial stiffness index (AASI) is derived from 24-hour ambulatory blood pressure recordings. We investigated whether the goodness-of-fit of the AASI regression line in individual subjects (r(2)) impacts on the association of AASI with established determinants of the relation between diastolic and systolic blood pressures. We constructed the International Database on the Ambulatory Blood Pressure in Relation to Cardiovascular Outcomes (7604 participants from 6 countries). AASI was unity minus the regression slope of diastolic on systolic blood pressure in individual 24-hour ambulatory recordings. AASI correlated positively with age and 24-hour mean arterial pressure and negatively with body height and 24-hour heart rate. The single correlation coefficients and the mutually adjusted partial regression coefficients of AASI with age, height, 24-hour mean pressure, and 24-hour heart rate increased from the lowest to the highest quartile of r(2). These findings were consistent in dippers and nondippers (night:day ratio of systolic pressure >or=0.90), women and men, and in Europeans, Asians, and South Americans. The cumulative z score for the association of AASI with these determinants of the relation between diastolic and systolic blood pressures increased curvilinearly with r(2), with most of the improvement in the association occurring above the 20th percentile of r(2) (0.36). In conclusion, a better fit of the AASI regression line enhances the statistical power of analyses involving AASI as marker of arterial stiffness. An r(2) value of 0.36 might be a threshold in sensitivity analyses to improve the stratification of cardiovascular risk.
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44.
  • Ahlström, Tommy, et al. (författare)
  • Correlation between plasma calcium, parathyroid hormone (PTH) and the metabolic syndrome (MetS) in a community-based cohort of men and women
  • 2009
  • Ingår i: Clinical Endocrinology. - : Wiley. - 0300-0664 .- 1365-2265. ; 71:5, s. 673-678
  • Tidskriftsartikel (refereegranskat)abstract
    • CONTEXT: In recent years, an association has been noted between several abnormalities that characterize the metabolic syndrome (MetS) and primary hyperparathyroidism (pHPT). These abnormalities include dyslipidaemia, obesity, insulin resistance and hypertension. The correlations between plasma calcium, parathyroid hormone (PTH) and the variables in the MetS in a normal population are still unclear.OBJECTIVE: To describe correlations between plasma calcium and PTH and the various abnormalities present in the MetS in a healthy population.DESIGN: We studied 1016 healthy individuals from the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) population of 70 years old, by means of plasma analyses of calcium, PTH, creatinine, lipids, insulin and glucose, as well as by standardized blood pressure measurements. Further, body mass index (BMI) and waist circumference were determined.RESULTS: The more National Cholesterol Education Program (NCEP) criteria for the MetS that were met, the higher the s-PTH and albumin-corrected s-calcium. Further, positive correlations between plasma calcium and BMI (P = 0.0003), waist circumference (P = 0.0009) and insulin resistance (P = 0.079) were found. PTH and BMI (P < 0.0001), waist circumference (P < 0.0001), systolic blood pressure (P = 0.0034), diastolic blood pressure (P = 0.0008), serum triglycerides (P = 0.0003) and insulin resistance (P = 0.0003) were positively correlated, whereas serum high density lipoproteins (HDL) (P = 0.036) and PTH were negatively correlated.CONCLUSIONS: We conclude that PTH correlates with several of the metabolic factors included in the MetS within a normocalcaemic population. In addition, individuals with mild pHPT present significantly more NCEP criteria for MetS. We postulate that increased levels of PTH in pHPT may be associated with the increased cardiovascular morbidity and mortality seen in pHPT.
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45.
  • Ahlund, Catherine, et al. (författare)
  • Pulse wave analysis on fingertip arterial pressure : effects of age, gender and stressors on reflected waves and their relation to brachial and femoral artery blood flow
  • 2008
  • Ingår i: Clinical Physiology and Functional Imaging. - 1475-0961 .- 1475-097X. ; 28:2, s. 86-95
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVES: Analysis of the contour of the arterial pressure pulse (pulse wave analysis; PWA) adds information about arterial stiffness etc., beyond that obtained from absolute pressures. Peripheral pulses normally show an anterograde systolic peak and two reflected peaks: one in systole and one in diastole. The amplitudes and timings of these were estimated from finger pressure recordings in three study groups. We studied the usefulness of continuous digital pressures for PWA. METHODS: First, PWA from intra-arterial (brachial) and non-invasive finger pressure recordings was compared. Secondly, stress-induced (mental arithmetics and cold pressor test) changes in pressure pulse reflection were compared with blood flow changes in brachial and femoral arteries (ultrasound). Thirdly, the influence of age and gender on digital pulse pressures was investigated at rest and during exercise. RESULTS AND CONCLUSION: Pulse wave analysis results from brachial and digital pressures correlated strongly. Stress induced changes in systolic reflection were associated with changes in brachial artery flow patterns, whereas diastolic reflection was associated with femoral artery flow changes. At rest, age increased systolic reflection without affecting diastolic reflection. Exercise increased systolic reflection and reduced diastolic reflection more in older subjects (>40 years) than in younger (<40 years). In conclusion, PWA from continuous, digital pressure recordings is a convenient technique to study the arterial function at rest and during exposure to stressors in broad populations. The two reflected waves are differently regulated, which may indicate different anatomical origin.
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46.
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47.
  • Albinsson, Lars, et al. (författare)
  • Towards a Co-Design Approach for Open Innovation
  • 2008
  • Ingår i: <em>Designed for Co-designers workshop</em>, Participatory Design Conference 2008 (PDC 2008). - School of Informatics, Indiana University, Bloomington, U.S.A : School of Informatics, Indiana University, Bloomington, U.S.A.
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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48.
  • Albinsson, Lars, et al. (författare)
  • Turning the Internet Around : e-Me: The Students Ideal e-Service
  • 2006
  • Konferensbidrag (refereegranskat)abstract
    • Today students, as many other groups of citizens, are offered, indeed required to use, a rapidly increasing number of e-Services. They range from school and course sites to interactions with authorities as well as companies offering student discounts. This paper reports on a pioneering project in Sweden with a radical approach to this, namely to issue the student with a electronic assistant, an e-Me, that schools, authorities and companies are required to address when interacting with the student. A larger number of students and partners, universities, companies and authorities, have been engaged in the design of such an e-Me. It might be thought of as turning the internet around – rather than having students keep track of sites, they will have to come to the students and interact with them in the way specified by them.
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49.
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50.
  • Andersson, J., et al. (författare)
  • Echogenecity of the carotid intima-media complex is related to cardiovascular risk factors, dyslipidemia, oxidative stress and inflammation The Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study
  • 2009
  • Ingår i: Atherosclerosis. - : Elsevier BV. - 1879-1484 .- 0021-9150. ; 204:2, s. 612-618
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Increased carotid artery intima-media thickness (IMT), measured by ultrasound, is related to an increased risk of cardiovascular disease. Since presence of echolucent plaques increases the risk further, we investigated if echogenecity of the carotid intima-media complex is related to markers of cardiovascular risk. Our aim was therefore to investigate if intima-media echogenecity is related to cardiovascular risk factors, or to markers of inflammation and oxidation in an exploratory investigation. Methods: The PIVUS cohort study is an observational study of 1016 (509 women and 507 men) randomly chosen individuals aged 70 living in Uppsala, Sweden. Carotid artery ultrasound measurements were performed. IMT and the grey scale median (GSM) value were calculated in the intima-media complex (IM-GSM) in the far wall of the common carotid artery. Traditional risk factors were evaluated together with indices of oxidative stress and inflammation. Results: In the multiple regression analysis, HDL-cholesterol, body mass index, conjugated diens, glutathione, e-selectin and TNF alfa were significantly related to IM-GSM. IMT was independently related to blood pressure, smoking and body mass index. Conclusion: The echolucency of the carotid intima-media was related to several cardiovascular risk factors not related to IMT, such as dyslipidemia, oxidative stress and inflammation. Since the echogenecity of the carotid intima-media complex was related to different risk factors compared to carotid IMT, it is worthwhile to further explore the usefulness of this new marker of the vascular wall. (C) 2009 Published by Elsevier Ireland Ltd.
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