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Analysis of antibod...
Analysis of antibody reactivity against cysteine sulfinic acid decarboxylase, a pyridoxal phosphate-dependent enzyme, in endocrine autoimmune disease
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- Sköldberg, Filip (author)
- Uppsala universitet,Institutionen för medicinska vetenskaper,Autoimmuna sjukdomar (Kämpe)
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- Rorsman, Fredrik (author)
- Uppsala universitet,Institutionen för medicinska vetenskaper,Autoimmuna sjukdomar (Kämpe)
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Perheentupa, Jaakko (author)
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- Landin-Olsson, Mona (author)
- Lund University,Lunds universitet,Medicin, Lund,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Medicine, Lund,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Husebye, Eystein S. (author)
- Uppsala universitet,Institutionen för medicinska vetenskaper,Autoimmuna sjukdomar (Kämpe)
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- Gustafsson, Jan (author)
- Barnendokrinologisk forskning/Tuvemo
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- Kämpe, Olle (author)
- Uppsala universitet,Institutionen för medicinska vetenskaper,Autoimmuna sjukdomar (Kämpe)
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(creator_code:org_t)
- The Endocrine Society, 2004
- 2004
- English.
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In: Journal of Clinical Endocrinology and Metabolism. - : The Endocrine Society. - 0021-972X .- 1945-7197. ; 89:4, s. 1636-1640
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Abstract
Subject headings
Close
- The structurally related group II pyridoxal phosphate (PLP)-dependent amino acid decarboxylases glutamic acid decarboxylase (GAD), aromatic L-amino acid decarboxylase (AADC), and histidine decarboxylase (HDC) are known autoantigens in endocrine disorders. We report, for the first time, the prevalence of serum autoantibody reactivity against cysteine sulfinic acid decarboxylase (CSAD), an enzyme that shares 50% amino acid identity with the 65- and 67-kDa isoforms of GAD (GAD-65 and GAD-67), in endocrine autoimmune disease. Three of 83 patients (3.6%) with autoimmune polyendocrine syndrome type 1 (APS1) were anti-CSAD positive in a radioimmunoprecipitation assay. Anti-CSAD antibodies cross-reacted with GAD-65, and the anti-CSAD-positive sera were also reactive with AADC and HDC. The low frequency of anti-CSAD reactivity is in striking contrast to the prevalence of antibodies against GAD-65, AADC, and HDC in APS1 patients, suggesting that different mechanisms control the immunological tolerance toward CSAD and the other group II decarboxylases. Moreover, CSAD may be a useful mold for the construction of recombinant chimerical antigens in attempts to map conformational epitopes on other group II PLP-dependent amino acid decarboxylases.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Annan klinisk medicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Other Clinical Medicine (hsv//eng)
Keyword
- Addison Disease/immunology
- Aromatic-L-Amino-Acid Decarboxylases/immunology
- Autoantibodies/*blood/immunology
- Carboxy-Lyases/*immunology
- Cross Reactions
- Diabetes Mellitus; Type 1/immunology
- Female
- Glutamate Decarboxylase/immunology
- Histidine Decarboxylase/immunology
- Humans
- Isoenzymes/immunology
- Male
- Polyendocrinopathies; Autoimmune/*immunology
- Pyridoxal Phosphate/metabolism
- Radioimmunoprecipitation Assay
- Research Support; Non-U.S. Gov't
- MEDICINE
- MEDICIN
Publication and Content Type
- vet (subject category)
- art (subject category)
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