| 1. |
- Albrechtsen, A., et al.
(författare)
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Exome sequencing-driven discovery of coding polymorphisms associated with common metabolic phenotypes
- 2013
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Ingår i: Diabetologia. - : Springer Science and Business Media LLC. - 0012-186X .- 1432-0428. ; 56:2, s. 298-310
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Tidskriftsartikel (refereegranskat)abstract
- Human complex metabolic traits are in part regulated by genetic determinants. Here we applied exome sequencing to identify novel associations of coding polymorphisms at minor allele frequencies (MAFs) > 1% with common metabolic phenotypes. The study comprised three stages. We performed medium-depth (8x) whole exome sequencing in 1,000 cases with type 2 diabetes, BMI > 27.5 kg/m(2) and hypertension and in 1,000 controls (stage 1). We selected 16,192 polymorphisms nominally associated (p < 0.05) with case-control status, from four selected annotation categories or from loci reported to associate with metabolic traits. These variants were genotyped in 15,989 Danes to search for association with 12 metabolic phenotypes (stage 2). In stage 3, polymorphisms showing potential associations were genotyped in a further 63,896 Europeans. Exome sequencing identified 70,182 polymorphisms with MAF > 1%. In stage 2 we identified 51 potential associations with one or more of eight metabolic phenotypes covered by 45 unique polymorphisms. In meta-analyses of stage 2 and stage 3 results, we demonstrated robust associations for coding polymorphisms in CD300LG (fasting HDL-cholesterol: MAF 3.5%, p = 8.5 x 10(-14)), COBLL1 (type 2 diabetes: MAF 12.5%, OR 0.88, p = 1.2 x 10(-11)) and MACF1 (type 2 diabetes: MAF 23.4%, OR 1.10, p = 8.2 x 10(-10)). We applied exome sequencing as a basis for finding genetic determinants of metabolic traits and show the existence of low-frequency and common coding polymorphisms with impact on common metabolic traits. Based on our study, coding polymorphisms with MAF above 1% do not seem to have particularly high effect sizes on the measured metabolic traits.
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| 2. |
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| 3. |
- Bae, J. B., et al.
(författare)
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Does parity matter in women's risk of dementia? A COSMIC collaboration cohort study
- 2020
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Ingår i: Bmc Medicine. - : Springer Science and Business Media LLC. - 1741-7015. ; 18:1
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Tidskriftsartikel (refereegranskat)abstract
- Background Dementia shows sex difference in its epidemiology. Childbirth, a distinctive experience of women, is associated with the risk for various diseases. However, its association with the risk of dementia in women has rarely been studied. Methods We harmonized and pooled baseline data from 11 population-based cohorts from 11 countries over 3 continents, including 14,792 women aged 60 years or older. We investigated the association between parity and the risk of dementia using logistic regression models that adjusted for age, educational level, hypertension, diabetes mellitus, and cohort, with additional analyses by region and dementia subtype. Results Across all cohorts, grand multiparous (5 or more childbirths) women had a 47% greater risk of dementia than primiparous (1 childbirth) women (odds ratio [OR] = 1.47, 95% confidence interval [CI] = 1.10-1.94), while nulliparous (no childbirth) women and women with 2 to 4 childbirths showed a comparable dementia risk to primiparous women. However, there were differences associated with region and dementia subtype. Compared to women with 1 to 4 childbirths, grand multiparous women showed a higher risk of dementia in Europe (OR = 2.99, 95% CI = 1.38-6.47) and Latin America (OR = 1.49, 95% CI = 1.04-2.12), while nulliparous women showed a higher dementia risk in Asia (OR = 2.15, 95% CI = 1.33-3.47). Grand multiparity was associated with 6.9-fold higher risk of vascular dementia in Europe (OR = 6.86, 95% CI = 1.81-26.08), whereas nulliparity was associated with a higher risk of Alzheimer disease (OR = 1.91, 95% CI 1.07-3.39) and non-Alzheimer non-vascular dementia (OR = 3.47, 95% CI = 1.44-8.35) in Asia. Conclusion Parity is associated with women's risk of dementia, though this is not uniform across regions and dementia subtypes.
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| 4. |
- Bae, J. B., et al.
(författare)
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Parity and the risk of incident dementia: a COSMIC study
- 2020
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Ingår i: Epidemiology and psychiatric sciences. - 2045-7979. ; 29
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Tidskriftsartikel (refereegranskat)abstract
- AIMS: To investigate the association between parity and the risk of incident dementia in women. METHODS: We pooled baseline and follow-up data for community-dwelling women aged 60 or older from six population-based, prospective cohort studies from four European and two Asian countries. We investigated the association between parity and incident dementia using Cox proportional hazards regression models adjusted for age, educational level, hypertension, diabetes mellitus and cohort, with additional analysis by dementia subtype (Alzheimer dementia (AD) and non-Alzheimer dementia (NAD)). RESULTS: Of 9756 women dementia-free at baseline, 7010 completed one or more follow-up assessments. The mean follow-up duration was 5.4 ± 3.1 years and dementia developed in 550 participants. The number of parities was associated with the risk of incident dementia (hazard ratio (HR) = 1.07, 95% confidence interval (CI) = 1.02-1.13). Grand multiparity (five or more parities) increased the risk of dementia by 30% compared to 1-4 parities (HR = 1.30, 95% CI = 1.02-1.67). The risk of NAD increased by 12% for every parity (HR = 1.12, 95% CI = 1.02-1.23) and by 60% for grand multiparity (HR = 1.60, 95% CI = 1.00-2.55), but the risk of AD was not significantly associated with parity. CONCLUSIONS: Grand multiparity is a significant risk factor for dementia in women. This may have particularly important implications for women in low and middle-income countries where the fertility rate and prevalence of grand multiparity are high.
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| 5. |
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| 6. |
- Drummond, M. V., et al.
(författare)
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Novel opto-electrical tunable dispersion compensator for IM signals
- 2009
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Ingår i: 2009 35th European Conference on Optical Communication (ECOC). - : VDE Verlag GmbH. - 9783800731732 ; , s. 5287374-
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Konferensbidrag (refereegranskat)abstract
- A novel opto-electrical tunable dispersion compensator with a tuning time lower than 150 s is proposed and experimentally demonstrated. Compensation of 0-340 ps/nm for a 40 Gb/s NRZ signal is achieved.
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| 7. |
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| 8. |
- Lindholm, Christina, 1942-, et al.
(författare)
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Hip fracture and pressure ulcers : the Pan-European Pressure Ulcer Study: intrinsic and extrinsic risk factors
- 2008
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Ingår i: International Wound Journal. - 1742-4801 .- 1742-481X. ; 5:2, s. 315-28
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Tidskriftsartikel (refereegranskat)abstract
- Pressure ulcers (PU) in patients with hip fracture remain a problem. Incidence of between 8.8% and 55% have been reported. There are few studies focusing on the specific patient-, surgery- and care-related risk indicators in this group. The aims of the study were: - to investigate prevalence and incidence of PU upon arrival and at discharge from hospital and to identify potential intrinsic and extrinsic risk factors for development of PU in patients admitted for hip fracture surgery, - to illuminate potential differences in patient logistics, surgery, PU prevalence and incidence and care between Northern and Southern Europe. Consecutive patients with hip fracture in six countries, Sweden, Finland, UK (North) and Spain, Italy and Portugal (South), were included. The patients were followed from Accident and Emergency Department and until discharge or 7 days. Prevalence, PU at discharge and incidence were investigated, and intrinsic and extrinsic risk indicators, including waiting time for surgery and duration of surgery were recorded. Of the 635 patients, 10% had PU upon arrival and 22% at discharge (26% North and 16% South). The majority of ulcers were grade 1 and none was grade 4. Cervical fractures were more common in the North and trochanteric in the South. Waiting time for surgery and duration of surgery were significantly longer in the South. Traction was more common in the South and perioperative warming in the North. Risk factors of statistical significance correlated to PU at discharge were age >or=71 (P = 0.020), dehydration (P = 0.005), moist skin (P = 0.004) and total Braden score (P = 0.050) as well as subscores for friction (P = 0.020), nutrition (P = 0.020) and sensory perception (P = 0.040). Comorbid conditions of statistical significance for development of PU were diabetes (P = 0.005) and pulmonary disease (P = 0.006). Waiting time for surgery, duration of surgery, warming or non warming perioperatively, type of anaesthesia, traction and type of fracture were not significantly correlated with development of PU.
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| 9. |
- Lindholm, Christina, et al.
(författare)
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Hip fracture and pressure ulcers - the Pan-European Pressure Ulcer Study : intrinsic and extrinsic risk factors
- 2008
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Ingår i: International Wound Journal. - : Wiley-Blackwell Publishing Ltd. - 1742-4801 .- 1742-481X. ; 5:2, s. 315-328
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Tidskriftsartikel (refereegranskat)abstract
- Pressure ulcers (PU) in patients with hip fracture remain a problem. Incidence of between 8.8% and 55% have been reported. There are few studies focusing on the specific patient-, surgery- and care-related risk indicators in this group. The aims of the study were: - to investigate prevalence and incidence of PU upon arrival and at discharge from hospital and to identify potential intrinsic and extrinsic risk factors for development of PU in patients admitted for hip fracture surgery, - to illuminate potential differences in patient logistics, surgery, PU prevalence and incidence and care between Northern and Southern Europe. Consecutive patients with hip fracture in six countries, Sweden, Finland, UK (North) and Spain, Italy and Portugal (South), were included. The patients were followed from Accident and Emergency Department and until discharge or 7 days. Prevalence, PU at discharge and incidence were investigated, and intrinsic and extrinsic risk indicators, including waiting time for surgery and duration of surgery were recorded. Of the 635 patients, 10% had PU upon arrival and 22% at discharge (26% North and 16% South). The majority of ulcers were grade 1 and none was grade 4. Cervical fractures were more common in the North and trochanteric in the South. Waiting time for surgery and duration of surgery were significantly longer in the South. Traction was more common in the South and perioperative warming in the North. Risk factors of statistical significance correlated to PU at discharge were age >or=71 (P = 0.020), dehydration (P = 0.005), moist skin (P = 0.004) and total Braden score (P = 0.050) as well as subscores for friction (P = 0.020), nutrition (P = 0.020) and sensory perception (P = 0.040). Comorbid conditions of statistical significance for development of PU were diabetes (P = 0.005) and pulmonary disease (P = 0.006). Waiting time for surgery, duration of surgery, warming or non warming perioperatively, type of anaesthesia, traction and type of fracture were not significantly correlated with development of PU.
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| 10. |
- Lindholm, Christina, et al.
(författare)
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Hip fracture and pressure ulcers – the Pan-European Pressure Ulcer Study – intrinsic and extrinsic risk factors
- 2008
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Ingår i: International Wound Journal. - : John Wiley & Sons. - 1742-4801 .- 1742-481X. ; 5:2, s. 315-328
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Tidskriftsartikel (refereegranskat)abstract
- Pressure ulcers (PU) in patients with hip fracture remain a problem. Incidence of between 8·8% and 55% have been reported. There are few studies focusing on the specific patient-, surgery- and care-related risk indicators in this group. The aims of the study wereto investigate prevalence and incidence of PU upon arrival and at discharge from hospital and to identify potential intrinsic and extrinsic risk factors for development of PU in patients admitted for hip fracture surgery.to illuminate potential differences in patient logistics, surgery, PU prevalence and incidence and care between Northern and Southern Europe. Consecutive patients with hip fracture in six countries, Sweden, Finland, UK (North) and Spain, Italy and Portugal (South), were included. The patients were followed from Accident and Emergency Department and until discharge or 7 days. Prevalence, PU at discharge and incidence were investigated, and intrinsic and extrinsic risk indicators, including waiting time for surgery and duration of surgery were recorded. Of the 635 patients, 10% had PU upon arrival and 22% at discharge (26% North and 16% South). The majority of ulcers were grade 1 and none was grade 4. Cervical fractures were more common in the North and trochanteric in the South. Waiting time for surgery and duration of surgery were significantly longer in the South. Traction was more common in the South and perioperative warming in the North. Risk factors of statistical significance correlated to PU at discharge were age ≥71 (P = 0·020), dehydration (P = 0·005), moist skin (P = 0·004) and total Braden score (P = 0·050) as well as subscores for friction (P = 0·020), nutrition (P = 0·020) and sensory perception (P = 0·040). Comorbid conditions of statistical significance for development of PU were diabetes (P = 0·005) and pulmonary disease (P = 0·006). Waiting time for surgery, duration of surgery, warming or non warming perioperatively, type of anaesthesia, traction and type of fracture were not significantly correlated with development of PU.
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| 11. |
- Lund, Bodil, et al.
(författare)
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Ecological effects on the oro- and nasopharyngeal microflora in children after treatment of acute otitis media with cefuroxime axetil or amoxycillin-clavulanate as suspensions
- 2001
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Ingår i: Clinical Microbiology and Infection. - : Elsevier BV. - 1198-743X .- 1469-0691. ; 7:5, s. 230-237
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Tidskriftsartikel (refereegranskat)abstract
- Objective To evaluate if the extent of normal microflora disturbances differed between treatment with amoxycillin-clavulanate administered in an active form and cefuroxime axetil administered as an inactive prodrug. Methods Twenty-eight children, 0.5-5 years old, diagnosed with acute otitis media (AOM), were treated with either amoxycillin-clavulanate (13.3 mg/kg 3 times daily) or cefuroxime axetil (15 mg/kg twice daily) for 7 days. Saliva samples and nasopharyngeal swabs were collected before, directly after and 2 weeks after treatment. The saliva samples were quantitatively and qualitatively analyzed and the nasopharyngeal swabs were qualitatively analyzed. All isolated strains were tested for beta -lactamase production. Results Both treatment regimens gave rise to similar alterations of the normal oropharyngeal microflora. In both groups, the amount of Streptococcus salivarius was significantly reduced (P < 0.05). The most common causative pathogens of acute otitis were S. pneumoniae, Haemophilus influenzae and Moraxella catarrhalis. On the day of enrollment, approximately half of the patients, in both groups, were infected with more than one pathogen. The rate of infection or colonization with more than one potential pathogen was low on day 7 but recurred 2 weeks after treatment to similar levels as on day 0. The total number of patients with reinfection, recolonization or recurrence of pathogens on day 21 was 11/12 in the amoxycillin-clavulanate group and 4/7 in the cefuroxime axetil group. The most common -lactamase producer was M. catarrhalis. Conclusion The local high concentration of antibiotics in the oropharynx immediately after intake of antibiotic suspensions seem to have little or no impact on the extent of disturbance of the microflora in this region. Children of this age group seem prone to either reinfection, recolonization or persistence of pathogens within 2 weeks after treatment. Furthermore, co-infection with more than one pathogen seems common in children with AOM and infection with beta -lactamase producing microorganisms occurs frequently.
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| 12. |
- Mahalingam, G., et al.
(författare)
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Social connections and risk of incident mild cognitive impairment, dementia, and mortality in 13 longitudinal cohort studies of ageing
- 2023
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Ingår i: Alzheimers & Dementia. - 1552-5260. ; 19:11, s. 5114-5128
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Tidskriftsartikel (refereegranskat)abstract
- IntroductionPrevious meta-analyses have linked social connections and mild cognitive impairment, dementia, and mortality. However, these used aggregate data from North America and Europe and examined a limited number of social connection markers. MethodsWe used individual participant data (N = 39271, M-age = 70.67 (40-102), 58.86% female, M-education = 8.43 years, Mfollow-up = 3.22 years) from 13 longitudinal ageing studies. A two-stage meta-analysis of Cox regression models examined the association between social connection markers with our primary outcomes. ResultsWe found associations between good social connections structure and quality and lower risk of incident mild cognitive impairment (MCI); between social structure and function and lower risk of incident dementia and mortality. Only in Asian cohorts, being married/in a relationship was associated with reduced risk of dementia, and having a confidante was associated with reduced risk of dementia and mortality. DiscussionDifferent aspects of social connections - structure, function, and quality - are associated with benefits for healthy aging internationally. HighlightsSocial connection structure (being married/in a relationship, weekly community group engagement, weekly family/friend interactions) and quality (never lonely) were associated with lower risk of incident MCI.Social connection structure (monthly/weekly friend/family interactions) and function (having a confidante) were associated with lower risk of incident dementia.Social connection structure (living with others, yearly/monthly/weekly community group engagement) and function (having a confidante) were associated with lower risk of mortality.Evidence from 13 longitudinal cohort studies of ageing indicates that social connections are important targets for reducing risk of incident MCI, incident dementia, and mortality.Only in Asian cohorts, being married/in a relationship was associated with reduced risk of dementia, and having a confidante was associated with reduced risk of dementia and mortality.
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| 13. |
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| 14. |
- Oh, D. J., et al.
(författare)
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Parental history of dementia and the risk of dementia: A cross-sectional analysis of a global collaborative study
- 2023
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Ingår i: Psychiatry and Clinical Neurosciences. - 1323-1316 .- 1440-1819. ; 77:8, s. 449-456
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Tidskriftsartikel (refereegranskat)abstract
- Background: Parental history of dementia appears to increase the risk of dementia, but there have been inconsistent results. We aimed to investigate whether the association between parental history of dementia and the risk of dementia are different by dementia subtypes and sex of parent and offspring. Methods: For this cross-sectional study, we harmonized and pooled data for 17,194 older adults from nine population-based cohorts of eight countries. These studies conducted face-to-face diagnostic interviews, physical and neurological examinations, and neuropsychological assessments to diagnose dementia. We investigated the associations of maternal and paternal history of dementia with the risk of dementia and its subtypes in offspring. Results: The mean age of the participants was 72.8 +/- 7.9 years and 59.2% were female. Parental history of dementia was associated with higher risk of dementia (odds ratio [OR] = 1.47, 95% confidence interval [CI] = 1.15-1.86) and Alzheimer's disease (AD) (OR = 1.72, 95% CI = 1.31-2.26), but not with the risk of non-AD. This was largely driven by maternal history of dementia, which was associated with the risk of dementia (OR = 1.51, 95% CI = 1.15-1.97) and AD (OR = 1.80, 95% CI = 1.33-2.43) whereas paternal history of dementia was not. These results remained significant when males and females were analyzed separately (OR = 2.14, 95% CI = 1.28-3.55 in males; OR = 1.68, 95% CI = 1.16-2.44 for females). Conclusions: Maternal history of dementia was associated with the risk of dementia and AD in both males and females. Maternal history of dementia may be a useful marker for identifying individuals at higher risk of AD and stratifying the risk for AD in clinical trials.
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| 15. |
- Samtani, S., et al.
(författare)
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Associations between social connections and cognition: a global collaborative individual participant data meta-analysis
- 2022
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Ingår i: The Lancet Healthy Longevity. - 2666-7568. ; 3:11
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Tidskriftsartikel (refereegranskat)abstract
- Background: Poor social connections (eg, small networks, infrequent interactions, and loneliness) are modifiable risk factors for cognitive decline. Existing meta-analyses are limited by reporting aggregate responses, a focus on global cognition, and combining social measures into single constructs. We aimed to investigate the association between social connection markers and the rate of annual change in cognition (ie, global and domain-specific), as well as sex differences, using an individual participant data meta-analysis. Methods: We harmonised data from 13 longitudinal cohort studies of ageing in North America, South America, Europe, Africa, Asia, and Australia. Studies were eligible for inclusion if they had baseline data for social connection markers and at least two waves of cognitive scores. Follow-up periods ranged from 0 years to 15 years across cohorts. We included participants with cognitive data for at least two waves and social connection data for at least one wave. We then identified and excluded people with dementia at baseline. Primary outcomes were annual rates of change in global cognition and cognitive domain scores over time until final follow-up within each cohort study analysed by use of an individual participant data meta-analysis. Linear mixed models within cohorts used baseline social connection markers as predictors of the primary outcomes. Effects were pooled in two stages using random-effects meta-analyses. We assessed the primary outcomes in the main (partially adjusted) and fully adjusted models. Partially adjusted models controlled for age, sex, and education; fully adjusted models additionally controlled for diabetes, hypertension, smoking, cardiovascular risk, and depression. Findings: Of the 40 006 participants in the 13 cohort studies, we excluded 1392 people with dementia at baseline. 38 614 individual participants were included in our analyses. For the main models, being in a relationship or married predicted slower global cognitive decline (b=0·010, 95% CI 0·000–0·019) than did being single or never married; living with others predicted slower global cognitive (b=0·007, 0·002–0·012), memory (b=0·017, 0·006–0·028), and language (b=0·008, 0·000–0·015) decline than did living alone; and weekly interactions with family and friends (b=0·016, 0·006–0·026) and weekly community group engagement (b=0·030, 0·007–0·052) predicted slower memory decline than did no interactions and no engagement. Never feeling lonely predicted slower global cognitive (b=0·047, 95% CI 0·018–0·075) and executive function (b=0·047, 0·017–0·077) decline than did often feeling lonely. Degree of social support, having a confidante, and relationship satisfaction did not predict cognitive decline across global cognition or cognitive domains. Heterogeneity was low (I2=0·00–15·11%) for all but two of the significant findings (association between slower memory decline and living with others [I2=58·33%] and community group engagement, I2=37·54–72·19%), suggesting robust results across studies. Interpretation: Good social connections (ie, living with others, weekly community group engagement, interacting weekly with family and friends, and never feeling lonely) are associated with slower cognitive decline.
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| 16. |
- Sterner, Y., et al.
(författare)
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Aspects of impairments, disabilities and life satisfaction in patients with chronic whiplash associated disorders
- 2002
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Ingår i: The Journal of Whiplash & Related disorders. - 1533-2888 .- 1533-2896. ; 1:2, s. 39-61
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Tidskriftsartikel (refereegranskat)abstract
- Introduction. The main aims of the present study were: (1) to compare aspects of disability (activity preferences and sick leave) and perceived global situation (life satisfaction) in a patient group with chronic whiplash associated disorders (WAD group, N = 32) with a healthy group of subjects (without neck or shoulder pain) randomly recruited from the official census lists (C group, N = 55), (2) to investigate whether the WAD group has a general hyper vigilance with respect to symptoms and (3) to analyse whether symptoms, signs or activity preferences influence aspects of life satisfaction in the WAD group. Methods. All subjects answered a questionnaire that asked them to disclose their symptoms, activity preferences, sick leave, and satisfaction with life. In addition, all subjects underwent a physical examination. Results. Significantly lower levels of activity preferences were noted for 3 out of 5 indices in the WAD group for females. Satisfaction with life as a whole, physical and psychological health was significantly lower in the WAD group. The WAD group had significantly higher prevalence of several neuropsychological and emotional symptoms, but no general hyper vigilance with respect to all symptoms was noted. Both pain related symptoms and neuropsychological symptoms were of significant importance for aspects of disability and life satisfaction in the WAD group. Conclusions. The present study showed that chronic WAD was associated with marked negative consequences with respect to the activity preferences and the perceived global situation. © 2002 by The Haworth Press, Inc. All rights reserved.
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| 17. |
- Sterner, Y, et al.
(författare)
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Country-specific birth weight and length in type 1 diabetes high-risk HLA genotypes in combination with prenatal characteristics.
- 2011
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Ingår i: Journal of Perinatology. - : Springer Science and Business Media LLC. - 0743-8346 .- 1476-5543. ; 31, s. 764-769
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Tidskriftsartikel (refereegranskat)abstract
- Objective:To examine the relationship between high-risk human leukocyte antigen (HLA) genotypes for type 1 diabetes and birth size in combination with prenatal characteristics in different countries.Study Design:Four high-risk HLA genotypes were enrolled in the Environmental determinants of Diabetes in the Young study newborn babies from the general population in Finland, Germany, Sweden and the United States. Stepwise regression analyses were used to adjust for country, parental physical characteristics and environmental factors during pregnancy.Result:Regression analyses did not reveal differences in birth size between the four type 1 diabetes high-risk HLA genotypes. Compared with DQ 4/8 in each country, (1) DQ 2/2 children were heavier in the United States (P=0.028) mostly explained however, by parental weight; (2) DQ 2/8 (P=0.023) and DQ 8/8 (P=0.046) children were longer in Sweden independent of parents height and as well as (3) in the United States for DQ 2/8 (P=0.023), but again dependent on parental height.Conclusion:Children born with type 1 diabetes high-risk HLA genotypes have comparable birth size. Longitudinal follow-up of these children should reveal whether birth size differences between countries contribute to the risk for islet autoimmunity and type 1 diabetes.Journal of Perinatology advance online publication, 28 April 2011; doi:10.1038/jp.2011.26.
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| 19. |
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| 20. |
- Yu, Zhangwei, et al.
(författare)
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Dynamics of long-period gratings tuned with internal fiber electrodes
- 2011
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Ingår i: Optics Letters. - 0146-9592 .- 1539-4794. ; 36:5, s. 633-635
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Tidskriftsartikel (refereegranskat)abstract
- The physics of electrically switched long-period grating in a twin-hole fiber with internal electrodes is studied. Dynamic measurements for the two polarizations show how the grating spectra shift in time due to the mechanical stress and heat transfer in the core and the cladding.
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