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- Shin, J. H., et al.
(författare)
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IA-2 autoantibodies in incident type I diabetes patients are associated with a polyadenylation signal polymorphism in GIMAP5
- 2007
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Ingår i: Genes Immun. - : Springer Science and Business Media LLC. - 1466-4879 .- 1476-5470. ; 8:6, s. 503-12
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Tidskriftsartikel (refereegranskat)abstract
- In a large case-control study of Swedish incident type I diabetes patients and controls, 0-34 years of age, we tested the hypothesis that the GIMAP5 gene, a key genetic factor for lymphopenia in spontaneous BioBreeding rat diabetes, is associated with type I diabetes; with islet autoantibodies in incident type I diabetes patients or with age at clinical onset in incident type I diabetes patients. Initial scans of allelic association were followed by more detailed logistic regression modeling that adjusted for known type I diabetes risk factors and potential confounding variables. The single nucleotide polymorphism (SNP) rs6598, located in a polyadenylation signal of GIMAP5, was associated with the presence of significant levels of IA-2 autoantibodies in the type I diabetes patients. Patients with the minor allele A of rs6598 had an increased prevalence of IA-2 autoantibody levels compared to patients without the minor allele (OR=2.2; Bonferroni-corrected P=0.003), after adjusting for age at clinical onset (P=8.0 x 10(-13)) and the numbers of HLA-DQ A1*0501-B1*0201 haplotypes (P=2.4 x 10(-5)) and DQ A1*0301-B1*0302 haplotypes (P=0.002). GIMAP5 polymorphism was not associated with type I diabetes or with GAD65 or insulin autoantibodies, ICA, or age at clinical onset in patients. These data suggest that the GIMAP5 gene is associated with islet autoimmunity in type I diabetes and add to recent findings implicating the same SNP in another autoimmune disease.
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- Blixt, L., et al.
(författare)
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Covid-19 in patients with chronic lymphocytic leukemia : clinical outcome and B- and T-cell immunity during 13 months in consecutive patients
- 2022
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Ingår i: Leukemia. - : Springer Nature. - 0887-6924 .- 1476-5551. ; 36:2, s. 476-481
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Tidskriftsartikel (refereegranskat)abstract
- We studied clinical and immunological outcome of Covid-19 in consecutive CLL patients from a well-defined area during month 1–13 of the pandemic. Sixty patients (median age 71 y, range 43–97) were identified. Median CIRS was eight (4–20). Patients had indolent CLL (n = 38), had completed (n = 12) or ongoing therapy (n = 10). Forty-six patients (77%) were hospitalized due to severe Covid-19 and 11 were admitted to ICU. Severe Covid-19 was equally distributed across subgroups irrespective of age, gender, BMI, CLL status except CIRS (p < 0.05). Fourteen patients (23%) died; age ≥75 y was the only significant risk factor (p < 0.05, multivariate analysis with limited power). Comparing month 1–6 vs 7–13 of the pandemic, deaths were numerically reduced from 32% to 18%, ICU admission from 37% to 15% whereas hospitalizations remained frequent (86% vs 71%). Seroconversion occurred in 33/40 patients (82%) and anti-SARS-CoV-2 antibodies were detectable at six and 12 months in 17/22 and 8/11 patients, respectively. Most (13/17) had neutralizing antibodies and 19/28 had antibodies in saliva. SARS-CoV-2-specific T-cells (ELISpot) were detected in 14/17 patients. Covid-19 continued to result in high admission even among consecutive and young early- stage CLL patients. A robust and durable B and/or T cell immunity was observed in most convalescents.
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- Johansson, S, et al.
(författare)
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Fetal lateral ganglionic eminence attracts one of two morphologically different types of tyrosine hydroxylase-positive nerve fibers formed by cultured ventral mesencephalon
- 2003
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Ingår i: Cell transplantation. - : SAGE Publications. - 0963-6897 .- 1555-3892. ; 12:3, s. 243-255
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this study was to investigate the influence of fetal lateral ganglionic eminence (LGE) on nerve fiber outgrowth formed by fetal ventral mesencephalon (VM). Organotypic tissue cultures of fetal VM and LGE plated as single or cocultures were employed. Survival time was 3–21 days in vitro. Nerve fiber outgrowth and migration of astrocytes were analyzed using immunohistochemistry for tyrosine hydroxylase (TH) and S100. In addition, cultures were labeled with the TUNEL technique and with antibodies directed against neurofilament (NF) in order to study apoptosis and retraction of nerve fibers, respectively. The results revealed two morphologically different types of TH-positive outgrowth growing into the substrate. The initially formed TH-positive outgrowth radiated continuously without changing direction, while a second wave of TH-positive outgrowth became obvious when the initial growth already had reached a distance of approximately 1000 μm. The second wave of TH-positive outgrowth radiated from the tissue, but at a certain distance changed direction and formed a network surrounding the culture. The initially formed TH-positive growth was not associated with the presence of S100-positive astrocytes and avoided to grow into the LGE. At longer time points the first wave of TH-positive nerve fibers appeared dotted, with disrupted NF-immunoreactive fibers and in most cultures these long distance growing fibers had disappeared at 21 days in vitro. The second wave of TH-positive nerve fibers was growing onto a layer of glia and never reached the distance of the first wave. LGE became innervated by TH-positive fibers at the time point for when the second wave of TH-positive growth had been initiated, and the innervation appeared in TH-dense patches that also showed a high density of S100-positive astrocytes. Significantly increased TUNEL activity within LGE portion of cocultures was observed when TH-positive fibers entered the LGE and formed patches. In conclusion, two morphologically different types of TH-positive outgrowth were found and the initially formed fibers neither targeted the LGE nor were they guided by glial cells, but their potential to grow for long distances was high.
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- Olsson, Inge, et al.
(författare)
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The biosynthesis of neutrophil and eosinophil granule proteins
- 1986
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Ingår i: Folia histochemica et cytobiologica / Polish Academy of Sciences, Polish Histochemical and Cytochemical Society. ; 24:2, s. 89-97
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Tidskriftsartikel (refereegranskat)abstract
- Composition of azurophil and specific granules from human polymorphonuclear neutrophils and granules from eosinophils is presented. Biosynthesis of the granule proteins is discussed in detail with particular emphasis on neutrophil myeloperoxidase (MPO) and eosinophil cationic protein (ECP).
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