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  • Handberg, A, et al. (författare)
  • Soluble CD36 (sCD36) Clusters with Markers of Insulin Resistance, and High sCD36 Is Associated with Increased Type 2 Diabetes Risk
  • 2010
  • Ingår i: JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM. - 0021-972X. ; 95:4, s. 1939-1946
  • Tidskriftsartikel (refereegranskat)abstract
    • Context and Objective: Soluble CD36 (sCD36) may be an early marker of insulin resistance and atherosclerosis. The objective of this prospective study was to evaluate sCD36 as a predictor of type 2 diabetes and to study its relationship with components of the metabolic syndrome (MetSy). Design, Setting, Participants, and Outcome Measures: We conducted a case-referent study nested within a population-based health survey. Baseline variables included sCD36, body mass index, blood pressure, blood lipids, adipokines, inflammatory markers, and beta-cell function. A total of 173 initially nondiabetic cohort members who developed type 2 diabetes during 10 yr of follow-up were matched (1:2) with referents. Exploratory factor analysis was applied to hypothesize affiliation of sCD36 to the MetSy components. Results: Doubling of baseline sCD36 increases the odds ratio for diabetes development by 1.24 in the general study population and by 1.45 in the female population (P < 0.025). Comparing upper sCD36 quartiles with lower, odds ratio for diabetes was 4.6 in women (P = 0.001), 3.15 in men (P = 0.011), and 2.6 in obese individuals (P < 0.025). Multivariate analysis shows that sCD36 does not predict diabetes independent of fasting plasma glucose and insulin. Factor analysis of 15 variables generates a six-factor model explaining 66-69% of total variance, where sCD36, body mass index, insulin, proinsulin, and leptin were assigned to the obesity/insulin resistance cluster. Conclusions: Upper quartile sCD36 is associated with elevated diabetes risk independent of age, gender, and obesity. Baseline sCD36 does not, however, predict diabetes independent of fasting glucose and insulin. sCD36 clusters with important markers of insulin resistance and MetSy that are key predictors of type 2 diabetes.
  • Peolsson, Michael, et al. (författare)
  • Modelling human musculoskeletal functional movements using ultrasound imaging
  • 2010
  • Ingår i: BMC Medical Imaging. - 1471-2342. ; 10, s. 9
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: A widespread and fundamental assumption in the health sciences is that muscle functions are related to a wide variety of conditions, for example pain, ischemic and neurological disorder, exercise and injury. It is therefore highly desirable to study musculoskeletal contributions in clinical applications such as the treatment of muscle injuries, post-surgery evaluations, monitoring of progressive degeneration in neuromuscular disorders, and so on.The spatial image resolution in ultrasound systems has improved tremendously in the last few years and nowadays provides detailed information about tissue characteristics. It is now possible to study skeletal muscles in real-time during activity.Methods: The ultrasound images are transformed to be congruent and are effectively compressed and stacked in order to be analysed with multivariate techniques. The method is applied to a relevant clinical orthopaedic research field, namely to describe the dynamics in the Achilles tendon and the calf during real-time movements.Results: This study introduces a novel method to medical applications that can be used to examine ultrasound image sequences and to detect, visualise and quantify skeletal muscle dynamics and functions.Conclusions: This new objective method is a powerful tool to use when visualising tissue activity and dynamics of musculoskeletal ultrasound registrations.
  • Sjöström, Malin, et al. (författare)
  • Internet-based treatment of stress urinary incontinence : a randomised controlled study with focus on pelvic floor muscle training
  • 2013
  • Ingår i: BJU International. - 1464-4096. ; 112:3, s. 362-372
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective To compare two treatment programmes for stress urinary incontinence (SUI) without face-to-face contact: one Internet-based and one sent by post.Patients and Methods Randomised, controlled trial conducted in Sweden 2009-2011. Computer-generated block-randomisation, allocation by independent administrator. No 'blinding'. The study included 250 community-dwelling women aged 18-70 years, with SUI >= 1 time/week. Consecutive online recruitment. The women had 3 months of either; (i) An Internet-based treatment programme (124 women), including e-mail support and cognitive behavioural therapy assignments or (ii) A treatment programme sent by post (126). Both programmes focused mainly on pelvic floor muscle training.Primary outcomes symptom-score (International Consultation on Incontinence Questionnaire Short Form, ICIQ-UI SF) and condition-specific quality of life (ICIQ-Lower Urinary Tract Symptoms Quality of Life, ICIQ-LUTSQoL).Secondary outcomes (i) Patient Global Impression of Improvement, (ii) Incontinence aids, (iii) Patient satisfaction, (iv) Health-specific QoL (EQ5D-Visual Analogue Scale), and (v) Incontinence episode frequency. Follow-up after 4 months via self-assessed postal questionnaires.Results In all, 12% (30 women) were lost to follow-up. Intention-to-treat analysis showed highly significant improvements (P < 0.001) with large effect sizes (>0.8) with both interventions, but there were no significant differences between groups in primary outcomes. The mean (SD) changes in symptom-score were: Internet 3.4 (3.4), Postal 2.9 (3.1) (P = 0.27). The mean (SD) changes in condition-specific QoL were: Internet 4.8 (6.1), Postal 4.6 (6.7) (P = 0.52). Compared with the postal-group, more participants in the Internet-group perceived they were much or very much improved (40.9% (43/105) vs 26.5% (30/113), P = 0.01), reported reduced usage of incontinence aids (59.5% (47/79) vs 41.4% (34/82), P = 0.02) and were satisfied with the treatment programme (84.8% (89/105) vs 62.9% (71/113), P < 0.001). Health-specific QoL improved in the Internet-group (mean change 3.7 (10.9), P = 0.001), but not in the postal-group (1.9 (13.0), P = 0.13). Overall, 69.8% (120/172) of participants reported complete lack of leakage or reduced number of leakage episodes by >50%.Conclusions Concerning primary outcomes, treatment effects were similar between groups whereas for secondary outcomes the Internet-based treatment was more effective. Internet-based treatment for SUI is a new, promising treatment alternative.
  • Myléus, Anna, et al. (författare)
  • Celiac disease revealed in 3% of Swedish 12-year-olds born during an epidemic
  • 2009
  • Ingår i: Journal of Pediatric Gastroenterology and Nutrition. - 0277-2116. ; 49:2, s. 170-176
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective:: Sweden experienced a marked epidemic of celiac disease between 1984 and 1996 in children younger than 2 years of age, partly explained by changes in infant feeding. The objective of this study was to determine the prevalence of celiac disease in 12-year-olds born during the epidemic (1993), including both symptomatic and screening detected cases. Patients and Methods:: All sixth-grade children in participating schools were invited (n = 10,041). Symptomatic and, therefore, previously diagnosed celiac disease cases were ascertained through the National Swedish Childhood Celiac Disease Register and/or medical records. All serum samples were analyzed for antihuman tissue transglutaminase (tTG)-IgA (Celikey), and serum-IgA, and some for tTG-IgG and endomysial antibodies. A small intestinal biopsy was recommended for all children with suspected undiagnosed celiac disease. Results:: Participation was accepted by 7567 families (75%). Previously diagnosed celiac disease was found in 67 children; 8.9/1000 (95% confidence interval [CI] 6.7-11). In another 192 children, a small intestinal biopsy was recommended and was performed in 180. Celiac disease was verified in 145 children, 20/1000 (95% CI 17-23). The total prevalence was 29/1000 (95% CI 25-33). Conclusions:: The celiac disease prevalence of 29/1000 (3%)-with two thirds of cases undiagnosed before screening-is 3-fold higher than the usually suggested prevalence of 1%. When these 12-year-olds were infants, the prevailing feeding practice was to introduce gluten abruptly, often without ongoing breast-feeding, which might have contributed to this unexpectedly high prevalence.
  • Rosén, Anna, et al. (författare)
  • Usefulness of Symptoms to Screen for Celiac Disease
  • 2014
  • Ingår i: Pediatrics. - American Academy of Pediatrics. - 0031-4005. ; 133:2, s. 211-218
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: To describe the frequency of symptoms and associated conditions among screening-detected celiac disease (CD) cases and non-CD children and to evaluate questionnaire-based case-finding targeting the general population. METHODS: In a population-based CD screening of 12-year-olds, children and their parents completed questionnaires on CD-associated symptoms and conditions before knowledge of CD status. Questionnaire data for those who had their CD detected in the screening (n = 153) were compared with those of children with normal levels of CD markers (n = 7016). Hypothetical case-finding strategies were also evaluated. Questionnaires were returned by 7054 ( 98%) of the children and by 6294 ( 88%) of their parents. RESULTS: Symptoms were as common among screening-detected CD cases as among non-CD children. The frequency of children with screening-detected CD was similar when comparing the groups with and without any CD-related symptoms (2.1% vs 2.1%; P =.930) or CD-associated conditions (3.6% vs 2.1%; P =.07). Case-finding by asking for CD-associated symptoms and/or conditions would have identified 52 cases (38% of all cases) at a cost of analyzing blood samples for 2282 children (37%) in the study population. CONCLUSIONS: The current recommended guidelines for finding undiagnosed CD cases, so-called active case-finding, fail to identify the majority of previously undiagnosed cases if applied in the general population of Swedish 12- year-olds. Our results warrant further studies on the effectiveness of CD case-finding in the pediatric population, both at the clinical and population-based levels.
  • Thøgersen, Anna M, et al. (författare)
  • Interactions between fibrinolysis, lipoproteins and leptin related to a first myocardial infarction.
  • 2004
  • Ingår i: European Journal of Cardiovascular Prevention & Rehabilitation. - 1741-8267. ; 11:1, s. 33-40
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: The summarized importance of haemostatic and metabolic variables (insulin, lipids including lipoprotein (a) [Lp(a)] and leptin) in predicting first myocardial infarction, as well as possible interactions among these variables, have not been reported. DESIGN: A prospective case-control study nested within the Northern Sweden Health and Disease Cohort. METHODS: Sixty-two men diagnosed with a first myocardial infarction were sex- and age-matched with 124 controls. Conditional logistic regression was conducted including established risk factors, plasma levels of plasminogen activator inhibitor-1 (PAI-1), tissue plasminogen activator (tPA) mass concentration, von Willebrand factor, insulin, proinsulin, specific insulin, apolipoprotein A-I (apo A-I), Lp(a), and leptin. Interaction analysis was also performed for tPA, apo A-I, Lp(a), leptin and proinsulin. RESULTS: Smoking, low plasma levels of apo A-I and high plasma levels of cholesterol, Lp(a), tPA, PAI-1, proinsulin and leptin were associated with myocardial infarction in univariate conditional logistic regression analysis. High tPA [odds ratio (OR), 21.3; 95% confidence interval (CI), 2.04-222] and Lp(a) (OR, 7.21; 95% CI, 1.31-39.8) and low apo A-I (OR, 0.15; 95% CI, 0.02-0.93) remained significant risk determinants in multivariate analysis with smoking habits, body mass index, hypertension, cholesterol, and diabetes included as covariates. There were non-significant synergic interactions between high Lp(a) and leptin and tPA, respectively, and between high Lp(a) and low apo A-I. CONCLUSION: Plasma levels of tPA, Lp(a), and apo A-I are independently associated with subsequent development of a first myocardial infarction in men.
  • Brink, Mikael, et al. (författare)
  • Multiplex analyses of antibodies against citrullinated peptides in individuals prior to development of rheumatoid arthritis
  • 2013
  • Ingår i: Arthritis and Rheumatism. - Wiley-Blackwell. - 0004-3591. ; 65:4, s. 899-910
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVES: The presence of antibodies against cyclic citrullinated peptides has been demonstrated to precede the symptom onset of rheumatoid arthritis (RA) by several years. Antibodies against 10 citrullinated autoantigen-derived peptides were analysed for reactivity before onset of symptoms. METHODS: In the Medical Biobank of Northern Sweden 409 individuals were identified, of whom 386 provided 717 samples, obtained before onset of symptoms of RA (median time 7.4 (IQR 9.3) years); 1305 population based controls were also identified. Antibodies to 10 citrullinated peptides; fibrinogen (Fib) Fibα573, Fibα591, Fibß36-52, Fibß72, Fibß74, α-enolase (CEP-1), Type II Collagen citC1(III) , filaggrin, vimentin (Vim)2-17, and Vim60-75 were analysed using a microarray system. RESULTS: The antibody fluorescence intensity of Fibß36-52, Fibß74, CEP-1, citC1(III) , and filaggrin was significantly increased in pre-disease individuals compared with controls (p<0.001). The levels of the earliest detectable antibodies (Fibα591 and Vim60-75) fluctuated over time, with only a slight increase after onset of disease. Antibodies against Fibß36-52, CEP-1 and filaggrin increased gradually reaching the highest levels of all antibodies before symptom onset. A cluster of antibodies, citC1(III) , Fibα573 and Fibß74 increased only slightly before onset of symptoms but prominently after disease onset. The odds ratio for development of RA with a combination of CEP-1 and Fibß36-52 antibodies (<3.35 years pre-dating) was 38.8 (CI95%14.5-103.5) compared with having either. CONCLUSION: Development of an immune response towards citrullinated peptides is initially restricted but expands with time to induce a more specific response with increasing levels towards onset of symptoms, particularly invoving antibodies against CEP-1, Fibß36-52 and filaggrin.
  • Dapi, Léonie N, et al. (författare)
  • Energy and nutrient intakes in relation to sex and socio-economic status among school adolescents in urban Cameroon, Africa.
  • 2011
  • Ingår i: Public health nutrition. - 1475-2727. ; 14:5, s. 904
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: To assess energy and nutrient intakes and physical activity of adolescents in urban Cameroon according to sex and socio-economic status (SES).DESIGN: Cross-sectional study with adolescents randomly selected from schools in low-, middle- and high-SES areas. Weight and height were measured and information about food intake and physical activity was obtained through repeated individual 24 h recalls. Under- and over-reporting of energy intake and inadequacy of nutrient intake were assessed.SETTING: Yaoundé, Cameroon.SUBJECTS: Boys and girls aged 12-16 years (n 227).RESULTS: Boys had a lower BMI and reported higher energy expenditures and physical activity levels (PAL) than girls. Under-reporting of energy intake was large among boys and girls regardless of PAL; boys under-reported more than girls. Among those with low PAL, over-reporting of energy intake was common. Over 50 % of boys and girls had protein below the recommendations. The intake of fat varied; 26 % of the adolescents were below and 25 % were above the recommendations. Inadequate intakes of vitamin B1, vitamin B3 and Fe were more common among girls, while boys more often had inadequate intake of vitamin A. Adolescents with low SES were more likely to be below the recommendations for fat and vitamins B2, B3, B6 and B12 than those with high SES.CONCLUSIONS: A high proportion of boys and girls reported inadequate intakes. However under- and over-reporting were also very common. Boys under-reported energy intake more than girls and inadequate nutrient intake was more frequently reported by adolescents with low SES than by those with high SES.
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