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Galectin-8 in IgA N...
Galectin-8 in IgA Nephritis: Decreased Binding of IgA by Galectin-8 Affinity Chromatography and Associated Increased Binding in Non-IgA Serum Glycoproteins
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- Carlsson, Michael (författare)
- Lund University,Lunds universitet,Avdelningen för mikrobiologi, immunologi och glykobiologi - MIG,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Microbiology, Immunology and Glycobiology - MIG,Department of Laboratory Medicine,Faculty of Medicine
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- Bakoush, Omran (författare)
- Lund University,Lunds universitet,Njurmedicin,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Nephrology,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine,University of Lund Hospital
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- Tengroth, Lotta (författare)
- Lund University
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- Kilsgard, Ola (författare)
- Lund University
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- Malmstrom, Johan (författare)
- Lund University
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- Hellmark, Thomas (författare)
- Lund University,Lunds universitet,Njurmedicin,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Autoimmunitet och njursjukdomar,Forskargrupper vid Lunds universitet,Nephrology,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine,Autoimmunity and kidney diseases,Lund University Research Groups,University of Lund Hospital
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- Segelmark, Mårten (författare)
- Lund University,Lunds universitet,Linköpings universitet,Farmakologi,Hälsouniversitetet,Njurmedicin,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Nephrology,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Leffler, Hakon (författare)
- Lund University,Lunds universitet,Avdelningen för mikrobiologi, immunologi och glykobiologi - MIG,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Microbiology, Immunology and Glycobiology - MIG,Department of Laboratory Medicine,Faculty of Medicine
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(creator_code:org_t)
- 2011-12-16
- 2012
- Engelska.
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Ingår i: Journal of Clinical Immunology. - : Springer Verlag (Germany). - 0271-9142 .- 1573-2592. ; 32:2, s. 246-255
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Abstract
Ämnesord
Stäng
- Background Immunoglobulin A nephritis (IgAN) is the most common primary glomerulonephritis worldwide. It is caused by accumulation of IgA1-containing immune complexes in the kidney resulting in renal failure, which is thought to be due to altered glycosylation of IgA with a decrease of 2-3-sialylated galactosides (NeuAc alpha 2-3Gal). less thanbrgreater than less thanbrgreater thanPurpose The purpose of this study was to analyze whether altered glycosylation of IgA would lead to an altered binding to galectin-8, an endogenous lectin with strong affinity for 2-3-sialylated galactosides. Galectins are a family of beta-galactoside-binding proteins; by binding various glycoproteins, they play important roles in the regulation of cellular functions in inflammation and immunity. Hence, an altered binding of IgA to galectin-8 could lead to pathologic immune functions, such as glomerulonephritis. less thanbrgreater than less thanbrgreater thanMethods Affinity chromatography of serum glycoproteins on the human sialogalactoside-binding lectin galectin-8N permitted quantitation of bound and unbound fractions, including IgA. less thanbrgreater than less thanbrgreater thanResults Analysis of similar to 100 IgA nephritis sera showed that the galectin-8N unbound fraction of IgA increased compared to similar to 100 controls, consistent with the known loss of galactosylation. A subgroup of similar to 15% of the IgAN patients had a ratio of galectin-8 bound/unbound IgA andlt;0.09, not found for any of the controls. Unexpectedly, the galectin-8N-binding fraction of serum glycoproteins other than IgA increased in the sera of IgAN patients but not in controls, suggesting a previously unrecognized change in this disease. less thanbrgreater than less thanbrgreater thanConclusion This is the first study that relates a galectin, an endogenous lectin family, to IgA nephritis and thus should stimulate new avenues of research into the pathophysiology of the disease.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Immunology in the medical area (hsv//eng)
Nyckelord
- IgA nephropathy
- galectin-8
- affinity chromatography
- NeuAc alpha 2-3Gal
- MEDICINE
- MEDICIN
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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