GLP-1 blood sugar regulation in islet transplants

GLP-1 (glucagon-like peptide-1) is now well-known from the anti-diabetic drugs that mimic the action of this natural hormone GLP-1, to treat type 2 diabetes and obesity. They work by stimulating insulin release, reducing glucagon secretion, slowing stomach emptying, and suppressing appetite, which leads to lower blood sugar and weight loss.

May 1992 we were the first to show direct potentiation of the insulin response from isolated islets by a (near-)physiological dose of the gut hormone GLP-1 during perifusion (in vitro) of canine islets at 7.5-10 mM glucose levels (1,2).

Jan 1994 we next showed this incretin effect of GLP-1 also after islet transplantation (in vivo, in dogs) in this poster (3) and abstract (4) presented at the 13th Workshop of the AIDSPIT (aka AIDPIT) Study Group , Igls, Austria, January 23–25, 1994.

Background of the work was posted earlier this year (5) and the work was published Nov 1994 in my PhD thesis Pancreatic islet transplantation , available online (6).

Notes

1) Van der Burg MPM, Guicherit OR, Scherft JP, Frölich M, Terpstra JL, Gooszen HG. Function after intrasplenic transplantation of islets of Langerhans in dogs (translated from dutch: Functie na intralienale transplantatie van eilandjes van Langerhans in de hond). Surgeon days ’92 of the Dutch Surgery Society, Rotterdam (The Netherlands) May 21–22, 1992. In : Gut factors controlling pancreatic islets • 20240910 | Michel van der Burg | michelvanderburg•com URL https://michelvanderburg.com/2024/09/10/gut-factors-controlling-pancreatic-islets-20240910/

2) van der Burg MPM, Guicherit OR, Frölich M, Gooszen HG. Insulinotropic effects of cholecystokinin, gastric inhibitory polypeptide and glucagon-like peptide-1 during perifusion of short-term cultured canine isolated islets. Regul Pept. 1995 Dec 7;60(1):61-7. doi: 10.1016/0167-0115(95)00122-4. PMID: 8747785.

3) Metabolic control after canine islet transplantation. M.P.M. van der Burg, P.T.R. van Suylichem, O.R. Guicherit, J.H.M. van Deijnen, M. Frölich, and H.G. Gooszen (Universities of Leiden & Groningen, The Netherlands). Poster presented at the 13th Workshop of the AIDSPIT Study Group , Igls, Austria, January 23–25, 1994 •

4) Metabolic control after canine islet transplantation. Van der Burg M.P.M., Guicherit O.R., van Suylichem P.T.R., Frölich M., van Deijnen J.H.M. , Gooszen H.G. (Leiden, The Netherlands; Groningen, The Netherlands). Horm metab Res 1994; 26: 63. (Abstract). View/Download file 1MEMO_20251113_2

5) Background of this work was posted in Dutch Islets Transplant Team • @1MEMO 20250125 • URL https://michelvanderburg.com/2025/01/25/dutch-islets-transplant-team-1memo-20250125/

6) Michael P.M. van der Burg. Pancreatic islet transplantation: studies on the technique and efficacy of islet isolation and transplantation. (Doctoral Thesis, Faculty of Medicine, Leiden University Medical Center (LUMC) , Leiden University), Boskoop: M.P.M. van der Burg | Miracles.Media (ISBN electronic, pdf, 9789080216402 ; ISBN print 9789080216419, 9080216410), 1994: 192 p. URL Thesis Repository Leiden University https://hdl.handle.net/1887/3486604

PM – Recording of the 13th AIDSPIT seminar on lessons from clinical islet transplantation was posted yesterday (7).

7) Clinical Islet Transplantation 13th AIDSPIT • @1MEMO 20251113 • URL https://michelvanderburg.com/2025/11/13/clinical-islet-transplantation-13th-aidspit-1memo-20251113/

#GLP1 #diabetes #islets #transplant #AIDSPIT

Updates

20251127 title updated – insert : AIDSPIT 1994

Citation info : GLP-1 blood sugar regulation in islet transplants • AIDSPIT 1994 • Michel van der Burg • Miracles.Media • @1MEMO 20251114 • TakeNode 810cc881-d084-4d2e-b252-d432918b1946 • URL https://michelvanderburg.com/2025/11/14