PMID- 37293502 OWN - NLM STAT- MEDLINE DCOM- 20230612 LR - 20240227 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 14 DP - 2023 TI - Efficacy of combination therapy with GABA, a DPP-4i and a PPI as an adjunct to insulin therapy in patients with type 1 diabetes. PG - 1171886 LID - 10.3389/fendo.2023.1171886 [doi] LID - 1171886 AB - INTRODUCTION: The purpose of this retrospective clinic chart review study was to determine the potential of a combination therapy (CT) consisting of gamma-aminobutyric acid (GABA), a dipeptidyl peptidase-4 inhibitor (DPP-4i), and a proton pump inhibitor (PPI) to improve glycemic control as an adjunct to insulin therapy in patients with type 1 diabetes (T1D). RESEARCH DESIGN AND METHODS: Nineteen patients with T1D on insulin therapy were treated with additional CT in oral form. Fasting blood glucose (FBG), HbA1c, insulin dose-adjusted HbA1c (IDA-A1c), daily insulin dose, insulin/weight ratio (IWR), and fasting plasma C-peptide were measured after 26-42 weeks of treatments. RESULTS: FBG, HbA1c, IDA-A1c, insulin dose and IWR were all significantly decreased while plasma C-peptide was significantly increased by the CT. Treatment outcomes were further analyzed by separation of the 19 patients into two groups. One group started on the CT within 12 months of insulin treatment (early therapy, 10 patients) and another group started on this therapy only after 12 months of insulin treatment (late therapy, 9 patients). FBG, IDA-A1c, insulin dose, and IWR decreased significantly in both the early and late CT groups, however to a better extent in the early therapy group. Moreover, plasma C-peptide increased significantly only in the early therapy group, and 7 of the 10 patients in this group were able to discontinue insulin treatment while maintaining good glycemic control to study end compared with none of the 9 patients in the late therapy group. CONCLUSION: These results support the concept that the combination of GABA, a DPP-4i and a PPI as an adjunct to insulin therapy improves glycemic control in patients with T1D, and that the insulin dose required for glycemic control can be reduced or even eliminated in some patients receiving this novel therapy. CI - Copyright (c) 2023 Rabinovitch, Koshelev, Lagunas-Rangel, Kosheleva, Gavra, Schioth and Levit. FAU - Rabinovitch, Alexander AU - Rabinovitch A AD - Kelowna, BC, Canada. FAU - Koshelev, Daniil AU - Koshelev D AD - Department of Surgical Sciences, Functional Pharmacology and Neuroscience, Uppsala University, Uppsala, Sweden. AD - Levicure LTD, Rishon Lezion, Israel. FAU - Lagunas-Rangel, Francisco Alejandro AU - Lagunas-Rangel FA AD - Department of Surgical Sciences, Functional Pharmacology and Neuroscience, Uppsala University, Uppsala, Sweden. FAU - Kosheleva, Liudmila AU - Kosheleva L AD - Department of Surgical Sciences, Functional Pharmacology and Neuroscience, Uppsala University, Uppsala, Sweden. AD - Levicure LTD, Rishon Lezion, Israel. FAU - Gavra, Tali AU - Gavra T AD - Research Unit, Assuta Medical Centers, Tel Aviv, Israel. FAU - Schioth, Helgi B AU - Schioth HB AD - Department of Surgical Sciences, Functional Pharmacology and Neuroscience, Uppsala University, Uppsala, Sweden. FAU - Levit, Shmuel AU - Levit S AD - Levicure LTD, Rishon Lezion, Israel. AD - Diabetes and Metabolism Institute, Assuta Medical Centers, Tel Aviv, Israel. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230524 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 RN - 0 (Dipeptidyl-Peptidase IV Inhibitors) RN - 0 (Insulin) RN - 0 (Glycated Hemoglobin) RN - 0 (Proton Pump Inhibitors) RN - 0 (C-Peptide) RN - 0 (Blood Glucose) RN - 0 (Hypoglycemic Agents) RN - 56-12-2 (gamma-Aminobutyric Acid) SB - IM MH - Humans MH - *Dipeptidyl-Peptidase IV Inhibitors/therapeutic use MH - Insulin/therapeutic use MH - *Diabetes Mellitus, Type 1/drug therapy/chemically induced MH - Glycated Hemoglobin MH - Proton Pump Inhibitors/therapeutic use MH - Retrospective Studies MH - C-Peptide MH - *Diabetes Mellitus, Type 2/drug therapy MH - Blood Glucose MH - Hypoglycemic Agents/therapeutic use MH - gamma-Aminobutyric Acid/therapeutic use PMC - PMC10246767 OTO - NOTNLM OT - DPP-4i OT - GABA OT - PPI OT - insulin OT - type 1 diabetes COIS- Authors SL, DK, and LK are members of Levicure LTD and have patents related to the triple combination of GABA, DPP-4i, and PPI. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/06/09 06:42 MHDA- 2023/06/12 06:42 PMCR- 2023/01/01 CRDT- 2023/06/09 04:36 PHST- 2023/02/22 00:00 [received] PHST- 2023/05/09 00:00 [accepted] PHST- 2023/06/12 06:42 [medline] PHST- 2023/06/09 06:42 [pubmed] PHST- 2023/06/09 04:36 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2023.1171886 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2023 May 24;14:1171886. doi: 10.3389/fendo.2023.1171886. eCollection 2023.