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Circulating anti-hypothalamus antibodies in celiac patients: tissue transglutaminase friend or foe?
- Source :
-
Immunologic research [Immunol Res] 2023 Dec; Vol. 71 (6), pp. 839-848. Date of Electronic Publication: 2023 May 23. - Publication Year :
- 2023
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Abstract
- Celiac disease (CD) is an autoimmune disease with inflammatory characteristics, having a condition of chronic malabsorption, affecting approximately 1% of the population at any age. In recent years, a concrete correlation between eating disorders and CD has emerged. Hypothalamus plays a central role in determining eating behaviour, regulating appetite and, consequently, food intake. One hundred and ten sera from celiac patients (40 active and 70 following a gluten-free diet) were tested for the presence of autoantibodies against primate hypothalamic periventricular neurons by immunofluorescence and by a home-made ELISA assay. In addition, ghrelin was measured by ELISA. As control, 45 blood serums from healthy age matched were analysed. Among active CD, all patients resulted positive for anti-hypothalamus autoantibodies and sera showed significantly higher levels of ghrelin. All of the free-gluten CD were negative for anti-hypothalamus autoantibodies and had low levels of ghrelin, as well as healthy controls. Of interest, anti-hypothalamic autoantibodies directly correlate with anti-tTG amounts and with mucosal damage. In addition, competition assays with recombinant tTG showed a drastically reduction of anti-hypothalamic serum reactivity. Finally, ghrelin levels are increased in CD patients and correlated with anti-tTG autoantibodies and anti-hypothalamus autoantibodies. This study demonstrates for the first time the presence of anti-hypothalamus antibodies and their correlation with the severity of the CD. It also allows us to hypothesize the role of tTG as a putative autoantigen expressed by hypothalamic neurons.<br /> (© 2023. The Author(s).)
Details
- Language :
- English
- ISSN :
- 1559-0755
- Volume :
- 71
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Immunologic research
- Publication Type :
- Academic Journal
- Accession number :
- 37221348
- Full Text :
- https://doi.org/10.1007/s12026-023-09394-0