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Sökning: WFRF:(Carlsson Anneli)

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1.
  • Nilsson, Anna-Lena, et al. (författare)
  • Relationship between Ljungan virus antibodies, HLA-DQ8, and insulin autoantibodies in newly diagnosed type 1 diabetes children
  • 2013
  • Ingår i: Viral immunology. - : Mary Ann Liebert, Inc.. - 0882-8245 .- 1557-8976. ; 26:3, s. 207-215
  • Tidskriftsartikel (refereegranskat)abstract
    • Environmental factors, including viral infections, may explain an increasing and fluctuating incidence of childhood type 1 diabetes (T1D). Ljungan virus (LV) isolated from bank voles have been implicated, but it is unclear whether LV contributes to islet autoimmunity, progression to clinical onset, or both, of T1D. The aim was to test whether LV antibodies (LVAb) were related to HLA-DQ and islet autoantibodies in newly diagnosed T1D patients (n = 676) and controls (n = 309). Patients, 0-18 years of age, diagnosed with T1D in 1996-2005 were analyzed for LVAb, HLA-DQ genotypes, and all seven known islet autoantibodies (GADA, IA-2A, IAA, ICA, ZnT8RA, ZnT8WA, and ZnT8QA). LVAb at 75th percentile, defined as cut off, was 90 (range 6-3936) U/mL and 4th quartile LVAb were found in 25% (170/676) of which 64% were < 10 (n = 108, p < 0.0001), and 27% were < 5 (n = 45; p < 0.0001) years old. The 4th quartile LVAb in children < 10 years of age correlated to HLA DQ2/8, 8/8, and 8/X (p < 0.0001). Furthermore, in the group with 4th quartile LVAb, 55% were IAA positive (p = 0.01) and correlation was found between 4th quartile LVAb and IAA in children < 10 years of age (p = 0.035). It is concluded that 1) LVAb were common among the young T1D patients and LVAb levels were higher in the younger age groups; 2) 4th quartile LVAb correlated with IAA; and 3) there was a correlation between 4th quartile LVAb and HLA-DQ8, particularly in the young patients. The presence of LVAb supports the notion that prior exposure to LV may be associated with T1D.
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2.
  • Agardh, Daniel, et al. (författare)
  • Prediction of silent celiac disease at diagnosis of childhood type 1 diabetes by tissue transglutaminase autoantibodies and HLA
  • 2001
  • Ingår i: Pediatric Diabetes. - : Hindawi Limited. - 1399-543X. ; 2:2, s. 58-65
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims: The aims were to estimate the diagnostic sensitivity and specificity of autoantibodies to tissue transglutaminase (IgA- and IgG-tTG), gliadin (AGA) and endomysium (EMA) in relation to human leukocyte antigen (HLA)-DQB1 alleles to identify silent celiac disease at diagnosis of type 1 diabetes. Methods: IgA- and IgG-tTG were measured in radioligand binding assays in 165 type 1 diabetic patients. Data on HLA-DQB1 were available for 148 patients and on both AGA and EMA for 164 patients. For patients considered positive for AGA or EMA, or both, an intestinal biopsy was suggested. HLA-DQB1 typing was carried out by polymerase chain reaction and hybridization with allele specific probes. Results: Three patients, left out from further study of antibodies, but not from HLA-DQB1 analysis, had treated celiac disease at diagnosis. Out of the other 162 type 1 diabetic patients tested, nine had IgA-tTG, six IgG-tTG, eight EMA, and 11 AGA. Biopsy was suggested for nine patients, of whom six showed villous atrophy, one did not and two refused to participate. Thus, silent celiac disease was probable in 8/162 and biopsy-verified in 6/162, where five patients were AGA-positive and six either EMA-, IgA-tTG- or IgG-tTG-positive. Of the 11 patients with celiac disease (three with treated and eight with silent celiac disease), 10 were HLA-DQB1-typed, of whom 65% (13/20) had the DQB1*02 allele, compared with 36% (100/276; p = 0.011) of those without celiac disease. IgA-tTG levels were higher in patients having either *02 or *0302 (0.6; −1.3–112.4 RU) compared with those not having these alleles (0.4; −0.7–3.4 RU; p = 0.023). Conclusion: IgA-tTG are HLA-DQB1*02-associated autoantibodies with high sensitivity and specificity for silent celiac disease at diagnosis of type 1 diabetes.
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3.
  • Aghajanova, Lusine, et al. (författare)
  • Receptors for thyroid-stimulating hormone and thyroid hormones in human ovarian tissue
  • 2009
  • Ingår i: Reproductive BioMedicine Online. - : Elsevier BV. - 1472-6483 .- 1472-6491. ; 18:3, s. 337-347
  • Tidskriftsartikel (refereegranskat)abstract
    • Dysfunction in thyroid regulation can cause menstrual and ovulatory disturbances, the mechanism of which is not clear. The distribution and activity of the thyroid-stimulating hormone (TSHR), and the thyroid hormone receptors (TR) alpha1, alpha2 and beta1 in human ovarian tissue and in granulosa cells was studied using immunohistochemistry, reverse-transcriptase polymerase chain reaction (RT-PCR), quantitative PCR and immunoassays. Strong immunostaining of TSHR, TRalpha1 and TRbeta1 was observed in ovarian surface epithelium and in oocytes of primordial, primary and secondary follicles, with minimal staining in granulosa cells of secondary follicles. Granulosa cells of antral follicles expressed TSHR, TRalpha1 and TRbeta1 proteins. Messenger RNA for all receptors was present in ovarian tissue. Mature human granulosa cells expressed transcripts for 5' deiodinases types 2 and 3, but not type 1, indicating the possibility of conversion of peripheral thyroid hormone thyroxin (T(4)). Granulosa cells stimulated with TSH showed a significant increase in cAMP concentrations after 2 h of culture (P = 0.047), indicating activation through TSHR. Stimulation with T(4) resulted in increased extracellular signal-regulated kinase 1 and 2 activation after 10, 30, 60 min and 24 h. These data demonstrate that TSH and thyroid hormone receptors may participate in the regulation of ovarian function.
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4.
  • Baroudi, Mazen, et al. (författare)
  • Preteen children’s health related quality of life in Sweden: changes over time and disparities between different sociodemographic groups
  • 2019
  • Ingår i: BMC Public Health. - : BioMed Central. - 1471-2458. ; 19
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Assessing disparities in health-related quality of Life (HRQoL) is important as a part of health-related disparities in the society. The aim of this study was to explore HRQoL among 12-year-olds in Sweden in terms of differences between years 2005 and 2009 and disparities related to sociodemographic background.Methods: During the school years 2005 and 2009, a total of 18,325 sixth grade students in Sweden were invited to a celiac disease screening study; 13,279 agreed to participate. Jointly with the celiac screening, the children answered a questionnaire that included EuroQol 5 Dimensions-youth (EQ-5D-Y) and their parents responded to separate questionnaires about their own and their child’s country of birth, family structure, their employment status, occupation, and education. In total 11,009 child-parent questionnaires were collected. Logistic regression was used to study differences in HRQoL between 2005 and 2009, and between various sociodemographic subgroups.Results: Compared with 2005, children in 2009 reported more pain (OR: 1.20, 95% CI: 1.1–1.3) and more mood problems (OR: 1.35, 95% CI: 1.2–1.5). In general, girls reported more pain and mood problems and had more disparities than boys. There were no significant differences based on parents’ occupation, however, children of parents with low or medium education levels reported less “mood problems” than those of parents with high education levels (OR: 0.65, 95% CI: 0.46–0.92) and (OR: 0.84, 95% CI: 0.73–0.96), respectively. A slight variation was seen in HRQoL between children with different migration background. Girls living in small municipalities reported more pain (OR: 1.51, 95% CI: 1.14–2.01), and problems performing usual activities (OR: 3.77, 95% CI: 2.08–6.84), compared to girls living in large municipalities. In addition, children living with two parents had less mood problems than children living in other family constellations.Conclusion: More children reported pain and mood problems in 2009 compared with 2005. To study future trends, health outcomes among children in Sweden should continue to be reported periodically. More efforts should be invested to increase the awareness of health-related disparities as highlighted in this study especially for girls living in small municipalities and children of parents with high education level.
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5.
  • Berhan, Yonas, et al. (författare)
  • Five-region study finds no evidence of undiagnosed type 2 diabetes in Swedish 11- to 13-year-olds
  • 2014
  • Ingår i: Acta Pædiatrica. - : Wiley. - 1651-2227 .- 0803-5253. ; 103:10, s. 1078-1082
  • Tidskriftsartikel (refereegranskat)abstract
    • AimChildhood obesity is now an established public health problem in most developed countries, and there is concern about a parallel increase of type 2 diabetes. The aim of this study was to estimate the prevalence of undiagnosed type 2 diabetes in overweight Swedish school children from 11 to 13years of age. MethodsBody mass index (BMI) was measured in 5528 schoolchildren in the 6th grade, from 11 to 13years of age, in five different regions in Sweden. Overweight was defined by international age- and sex-specific BMI cut-offs, corresponding to adult BMI cut-offs of 25kg/m(2) at 18years of age (ISO-BMI 25, n=1275). Haemoglobin A1c (HbA1c) was measured in 1126 children with ISO-BMI 25. Children with a Diabetes Control and Complications Trial aligned HbA1c 6.1% on two occasions underwent an oral glucose tolerance test (OGTT) to establish the diabetes diagnosis. ResultsOf 1126 children with ISO-BMI 25, 24 (2.1%) had at least one HbA1c value 6.1%. Three of them had HbA1c 6.1% on two occasions, and all of them had a normal OGTT. ConclusionIn this cross-sectional, population-based screening study of a high-risk group of 11- to 13-year-old Swedish school children, we found no indication of undiagnosed diabetes or impaired glucose tolerance.
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6.
  • Berhan, Yonas, 1970-, et al. (författare)
  • Screening for undiagnosed type-2 diabetes in Swedish 6th grade school children
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Aims: To estimate the prevalence of undiagnosed type-2 diabetes in overweight Swedish school children 11-13 years old.Methods: BMI was measured in 5 528 school-children (11-13 years of age) attending the 6th grade, in five different regions in Sweden. Overweight was defined by international age-sex specific BMI cut-offs, corresponding to adult BMI cut-offs of 25 kg/m² at 18 years of age (ISO-BMI ≥25, n=1 275). Haemoglobin A1c (HbA1c) was measured in 1 126 children with ISO-BMI ≥25. Children with a DCCT-aligned HbA1c ≥ 6.1% on two occasions underwent an oral glucose-tolerance test (OGTT) to establish diabetes diagnosis.Results: Twenty four children (2.1%) had at least one HbA1c-value ≥6.1%. Three of them had HbA1c ≥6.1% on two occasions and all of them had a normal OGTT.Conclusion: In this cross-sectional population-based screening study of a high risk group of 11-13 years old Swedish school children we found no indication of undiagnosed diabetes or impaired glucose tolerance.Key
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