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Sökning: WFRF:(Sanner H.)

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1.
  • Saevarsdottir, S., et al. (författare)
  • Multiomics analysis of rheumatoid arthritis yields sequence variants that have large effects on risk of the seropositive subset
  • 2022
  • Ingår i: Annals of the Rheumatic Diseases. - : BMJ. - 0003-4967 .- 1468-2060. ; 81:8
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives To find causal genes for rheumatoid arthritis (RA) and its seropositive (RF and/or ACPA positive) and seronegative subsets. Methods We performed a genome-wide association study (GWAS) of 31 313 RA cases (68% seropositive) and similar to 1 million controls from Northwestern Europe. We searched for causal genes outside the HLA-locus through effect on coding, mRNA expression in several tissues and/or levels of plasma proteins (SomaScan) and did network analysis (Qiagen). Results We found 25 sequence variants for RA overall, 33 for seropositive and 2 for seronegative RA, altogether 37 sequence variants at 34 non-HLA loci, of which 15 are novel. Genomic, transcriptomic and proteomic analysis of these yielded 25 causal genes in seropositive RA and additional two overall. Most encode proteins in the network of interferon-alpha/beta and IL-12/23 that signal through the JAK/STAT-pathway. Highlighting those with largest effect on seropositive RA, a rare missense variant in STAT4 (rs140675301-A) that is independent of reported non-coding STAT4-variants, increases the risk of seropositive RA 2.27-fold (p=2.1x10(-9)), more than the rs2476601-A missense variant in PTPN22 (OR=1.59, p=1.3x10(-160)). STAT4 rs140675301-A replaces hydrophilic glutamic acid with hydrophobic valine (Glu128Val) in a conserved, surface-exposed loop. A stop-mutation (rs76428106-C) in FLT3 increases seropositive RA risk (OR=1.35, p=6.6x10(-11)). Independent missense variants in TYK2 (rs34536443-C, rs12720356-C, rs35018800-A, latter two novel) associate with decreased risk of seropositive RA (ORs=0.63-0.87, p=10(-9)-10(-27)) and decreased plasma levels of interferon-alpha/beta receptor 1 that signals through TYK2/JAK1/STAT4. Conclusion Sequence variants pointing to causal genes in the JAK/STAT pathway have largest effect on seropositive RA, while associations with seronegative RA remain scarce.
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2.
  • Lundberg, IE, et al. (författare)
  • 2017 European League Against Rheumatism/American College of Rheumatology classification criteria for adult and juvenile idiopathic inflammatory myopathies and their major subgroups
  • 2017
  • Ingår i: Annals of the rheumatic diseases. - : BMJ. - 1468-2060 .- 0003-4967. ; 76:12, s. 1955-1964
  • Tidskriftsartikel (refereegranskat)abstract
    • To develop and validate new classification criteria for adult and juvenile idiopathic inflammatory myopathies (IIM) and their major subgroups.MethodsCandidate variables were assembled from published criteria and expert opinion using consensus methodology. Data were collected from 47 rheumatology, dermatology, neurology and paediatric clinics worldwide. Several statistical methods were used to derive the classification criteria.ResultsBased on data from 976 IIM patients (74% adults; 26% children) and 624 non-IIM patients with mimicking conditions (82% adults; 18% children), new criteria were derived. Each item is assigned a weighted score. The total score corresponds to a probability of having IIM. Subclassification is performed using a classification tree. A probability cut-off of 55%, corresponding to a score of 5.5 (6.7 with muscle biopsy) ‘probable IIM’, had best sensitivity/specificity (87%/82% without biopsies, 93%/88% with biopsies) and is recommended as a minimum to classify a patient as having IIM. A probability of ≥90%, corresponding to a score of ≥7.5 (≥8.7 with muscle biopsy), corresponds to ‘definite IIM’. A probability of <50%, corresponding to a score of <5.3 (<6.5 with muscle biopsy), rules out IIM, leaving a probability of ≥50 to <55% as ‘possible IIM’.ConclusionsThe European League Against Rheumatism/American College of Rheumatology (EULAR/ACR) classification criteria for IIM have been endorsed by international rheumatology, dermatology, neurology and paediatric groups. They employ easily accessible and operationally defined elements, and have been partially validated. They allow classification of ‘definite’, ‘probable’ and ‘possible’ IIM, in addition to the major subgroups of IIM, including juvenile IIM. They generally perform better than existing criteria.
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4.
  • Bottai, Matteo, et al. (författare)
  • EULAR/ACR classification criteria for adult and juvenile idiopathic inflammatory myopathies and their major subgroups : a methodology report
  • 2017
  • Ingår i: RMD Open. - : BMJ. - 2056-5933. ; 3:2
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective To describe the methodology used to develop new classification criteria for adult and juvenile idiopathic inflammatory myopathies (IIMs) and their major subgroups.Methods An international, multidisciplinary group of myositis experts produced a set of 93 potentially relevant variables to be tested for inclusion in the criteria. Rheumatology, dermatology, neurology and paediatric clinics worldwide collected data on 976 IIM cases (74% adults, 26% children) and 624 non-IIM comparator cases with mimicking conditions (82% adults, 18% children). The participating clinicians classified each case as IIM or non-IIM. Generally, the classification of any given patient was based on few variables, leaving remaining variables unmeasured. We investigated the strength of the association between all variables and between these and the disease status as determined by the physician. We considered three approaches: (1) a probability-score approach, (2) a sum-of-items approach criteria and (3) a classification-tree approach.Results The approaches yielded several candidate models that were scrutinised with respect to statistical performance and clinical relevance. The probability-score approach showed superior statistical performance and clinical practicability and was therefore preferred over the others. We developed a classification tree for subclassification of patients with IIM. A calculator for electronic devices, such as computers and smartphones, facilitates the use of the European League Against Rheumatism/American College of Rheumatology (EULAR/ACR) classification criteria.Conclusions The new EULAR/ACR classification criteria provide a patient's probability of having IIM for use in clinical and research settings. The probability is based on a score obtained by summing the weights associated with a set of criteria items.
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5.
  • Eide, H., et al. (författare)
  • Organdonasjon og norske legers behov for opplæring
  • 2012
  • Ingår i: Tidsskrift for Den norske lægeforening. - : Norwegian Medical Association. - 0029-2001 .- 0807-7096. ; 132:10, s. 1235-1238
  • Tidskriftsartikel (refereegranskat)abstract
    • Bakgrunn. Ferdighetene til den som spør om organdonasjon og tidspunktet for samtalen kan påvirke muligheten for at pårørende samtykker. Hensikten med studien var å undersøke intensivlegers og nevrokirurgers erfaring i å ta vare på organgivere og i å kommunisere med pårørende – og deres læringsbehov.Materiale og metode. I 2008 sendte vi et spørreskjema til alle leger ved intensivavdelingene ved samtlige donorsykehus i Norge og til alle nevrokirurger/utdanningskandidater i nevrokirurgi.Resultater. 435 leger (55 %) besvarte spørreskjemaet. 63 % var spesialister i intensivmedisin. Over halvparten hadde liten erfaring både med organdonasjon og med å ivareta de pårørende. Mange oppga behov for å lære mer om medisinske forhold knyttet til organdonasjon og om kommunikasjon i denne situasjonen.Fortolkning. Mange leger følger ikke anbefalt praksis når de møter pårørende. I undervisningstilbudet bør man særlig vektlegge kommunikasjon med pårørende.
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  • Randerath, WJ, et al. (författare)
  • Parameters of Overnight Pulse Wave under Treatment in Obstructive Sleep Apnea.
  • 2016
  • Ingår i: Respiration. - : S. Karger AG. - 0025-7931 .- 1423-0356. ; 92:3, s. 136-43
  • Tidskriftsartikel (refereegranskat)abstract
    • Sleep-related breathing disorders may promote cardiovascular (CV) diseases. A novel and differentiated approach to overnight photoplethysmographic pulse wave analysis, which includes risk assessment and measurement of various pulse wave characteristics, has been evaluated in obstructive sleep apnea (OSA).The purpose of this study was to assess if and which of the differentiated pulse wave characteristics might be influenced by OSA treatment with positive airway pressure (PAP).The study included two protocols. In the case-control study (group A), pulse wave-derived CV risk indices recorded during PAP therapy were compared with those obtained in age, body mass index, and CV risk class-matched patients with untreated OSA (n = 67/67). In the prospective PAP treatment study (group B), 17 unselected patients undergoing a full-night sleep test at baseline and after 23 ± 19 weeks of treatment were analyzed.In untreated OSA patients (group A), the overnight hypoxic load was increased (SpO2 index 38.7 ± 17.5 vs. 24.0 ± 11.1, p < 0.001) and the pulse wave attenuation index (PWA-I) was lower (29.4 ± 9.2 vs. 33.5 ± 11.8, p = 0.022) than in treated patients. In group B, PAP therapy reduced the hypoxic load and increased the PWA-I significantly. The composite CV risk index was slightly but not significantly reduced.PAP therapy modified the hypoxic load and pulse wave-derived markers. The PWA-I - associated with sympathetic vascular tone - was most prominently modified by PAP. This novel approach to markers of CV function should be further evaluated in prospective studies.
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  • Sanner, Margareta A., et al. (författare)
  • Evaluation of an organ-donor-card-campaign in Sweden
  • 1995
  • Ingår i: Clinical Transplantation. - 0902-0063 .- 1399-0012. ; 9:4, s. 326-333
  • Tidskriftsartikel (refereegranskat)abstract
    • One of the aims of this study was to evaluate an information campaign carried out in three geographical areas of Sweden in the winter of 1992-93. The campaign was intended to increase public awareness of organ donation and to increase the signing of donor cards. Another objective was to test the effects of different kinds of information. These were: A) an extensive "package" of information including training of key groups, lecturing at meetings and exhibitions, and advertisements of donor cards: B) a brochure to households including two donor cards; and C) a combination of A and B. Yet another aim was to reassess public opinion on transplantation issues, which had been surveyed before in 1987, 1988, and 1990. Random samples of the population in three campaign areas and a control sample were surveyed before and after the campaign, altogether 5600 persons. The average response rate was 69% (1992) and 68% (1993). In the two areas where the brochure had been distributed to the households, the rate of donor card holders had more than doubled (from 3% and 5% to 13% and 12%). In the two areas where the brochure had not been distributed, the rate was unchanged (5%). In the "brochure areas" also a somewhat larger number of people had informed their relatives about their decisions, compared with people in the other areas. In all campaign areas considerably more people were aware of the cards than in the control area. No attitude changes could be shown in any area.(
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