PuSH - Publikationsserver des Helmholtz Zentrums München

Export: TXT Text RIS Endnote (RIS) BIB BibTeX
Buitinga, M.* ; Cohrs, C.M. ; Eter, W.A.* ; Claessens-Joosten, L.* ; Frielink, C.* ; Bos, D.* ; Sandker, G.* ; Brom, M.* ; Speier, S. ; Gotthardt, M.*

Non-invasive monitoring of glycemia-induced regulation of GLP-1R expression in murine and human islets of Langerhans.

Diabetes 69, 2246-2252 (2020)
Verlagsversion DOI PMC
Closed
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Glucagon-like peptide 1 receptor (GLP-1R) imaging with radiolabeled exendin has proven to be a powerful tool to quantify beta-cell mass (BCM) in vivo. As GLP-1R expression is thought to be influenced by glycemic control, we examined the effect of blood glucose (BG) levels on GLP-1R-mediated exendin uptake in both murine and human islets and its implications for BCM quantification. Periods of hyperglycemia significantly reduced exendin uptake in murine and human islets, which was paralleled by a reduction in GLP-1R expression. Detailed mapping of the tracer uptake and insulin and GLP-1R expression conclusively demonstrated that the observed reduction in tracer uptake directly correlates to GLP-1R expression levels. Importantly, the linear correlation between tracer uptake and beta-cell area was maintained in spite of the reduced GLP-1R expression levels. Subsequent normalization of BG levels restored absolute tracer uptake and GLP-1R expression in beta-cells and the observed loss in islet volume was halted. This manuscript emphasizes the potency of nuclear imaging techniques to monitor receptor regulation noninvasively. Our findings have significant implications for clinical practice, indicating that BG levels should be near-normalized for at least 3 weeks prior to GLP-1R agonist treatment or quantitative radiolabeled exendin imaging for BCM analysis.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Scopus
Cited By
Altmetric
7.720
0.000
2
3
Tags
Anmerkungen
Besondere Publikation
Auf Hompepage verbergern

Zusatzinfos bearbeiten
Eigene Tags bearbeiten
Privat
Eigene Anmerkung bearbeiten
Privat
Auf Publikationslisten für
Homepage nicht anzeigen
Als besondere Publikation
markieren
Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Beta-cell Mass; Glucagon-like Peptide-1; Blood-glucose Improves; Hyperglycemia; Receptor; Onset; Normalization; Pancreas
Sprache englisch
Veröffentlichungsjahr 2020
HGF-Berichtsjahr 2020
ISSN (print) / ISBN 0012-1797
e-ISSN 1939-327X
Zeitschrift Diabetes
Quellenangaben Band: 69, Heft: 11, Seiten: 2246-2252 Artikelnummer: , Supplement: ,
Verlag American Diabetes Association
Verlagsort Alexandria, VA.
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Pancreatic Islet Research (IPI)
POF Topic(s) 90000 - German Center for Diabetes Research
Forschungsfeld(er) Helmholtz Diabetes Center
PSP-Element(e) G-502600-005
Förderungen Leona M. and Harry B. Helmsley Charitable Trust
Paul Langerhans Institute Dresden (PLID) of Helmholtz Zentrum Munchen at the University Clinic Carl Gustav Carus of Technische Universitat Dresden
German Ministry for Education and Research (BMBF)
Deutsche Forschungsgemeinschaft-Sonderforschungsbereich (DFG-SFB)/Transregio 127
IMI 2 joint undertaking
Union's Horizon 2020 research and innovation programme
European Federation of Pharmaceutical Industries and Associations (EFPIA)
JDRF
FP7 Coordination of Non-Community Research Programmes
DOI 10.2337/db20-0616
WOS ID WOS:000580011700003
PubMed ID 32843570
Erfassungsdatum 2020-10-21
[➜Korrektur melden]