PMID- 35635326 OWN - NLM STAT- MEDLINE DCOM- 20220908 LR - 20221015 IS - 1463-1326 (Electronic) IS - 1462-8902 (Print) IS - 1462-8902 (Linking) VI - 24 IP - 10 DP - 2022 Oct TI - Mechanisms of action of the sodium-glucose cotransporter-2 (SGLT2) inhibitor canagliflozin on tubular inflammation and damage: A post hoc mediation analysis of the CANVAS trial. PG - 1950-1956 LID - 10.1111/dom.14779 [doi] AB - AIMS: To test the hypothesis that the reduction in urinary kidney injury molecule-1 (KIM-1) observed with the sodium-glucose cotransporter-2 (SGLT2) inhibitor canagliflozin is mediated through its effects on urine albumin to creatinine ratio (UACR) and monocyte chemoattractant protein-1 (MCP-1) by assessing the proportion of the effect of canagliflozin on KIM-1 that is mediated through its effects on MCP-1 and UACR in patients with type 2 diabetes and albuminuric kidney disease. MATERIAL AND METHODS: We measured KIM-1 and MCP-1 levels in urine samples from the CANVAS trial at baseline and Week 52 with the Mesoscale QuickPlex SQ 120 platform. KIM-1 and MCP-1 were standardized by urinary creatinine (Cr). The proportion of the effect of canagliflozin that is mediated through UACR and MCP-1/Cr on KIM-1/Cr was estimated with G-computation. RESULTS: In total, 763 patients with micro- or macroalbuminuria (17.6% of the total cohort) were included. Baseline characteristics were well balanced between the canagliflozin and placebo group. At Year 1, canagliflozin compared to placebo reduced UACR, MCP-1/Cr and KIM-1/Cr by 40.4% (95% CI 31.0, 48.4), 18.1% (95% CI 8.9, 26.4) and 30.9% (95% CI 23.0, 38.0), respectively. The proportion of the effect of canagliflozin on KIM-1/Cr mediated by its effect on UACR and in turn on MCP-1/Cr was 15.2% (95% CI 9.4, 24.5). CONCLUSION: Canagliflozin reduces urinary KIM-1, suggesting decreased tubular damage. This effect was partly mediated through a reduction in MCP-1, indicative of reduced tubular inflammation, which was in turn mediated by a reduction in UACR. This post hoc analysis suggests that urinary albumin leakage may lead to tubular inflammation and induction of injury, and provide mechanistic insight for how canagliflozin may ameliorate tubular damage, but further research is required to confirm these findings. CI - (c) 2022 The Authors. Diabetes, Obesity and Metabolism published by John Wiley & Sons Ltd. FAU - Sen, Taha AU - Sen T AUID- ORCID: 0000-0001-6359-2945 AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands. FAU - Koshino, Akihiko AU - Koshino A AUID- ORCID: 0000-0002-9432-2427 AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands. AD - Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan. FAU - Neal, Bruce AU - Neal B AUID- ORCID: 0000-0002-0490-7465 AD - The George Institute for Global Health, UNSW Sydney, Sydney, New South Wales, Australia. FAU - Bijlsma, Maarten J AU - Bijlsma MJ AUID- ORCID: 0000-0002-7330-6006 AD - Unit PharmacoTherapy, Epidemiology, and Economics (PTEE), Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands. FAU - Arnott, Clare AU - Arnott C AUID- ORCID: 0000-0001-9370-9913 AD - The George Institute for Global Health, UNSW Sydney, Sydney, New South Wales, Australia. FAU - Li, Jingwei AU - Li J AUID- ORCID: 0000-0003-1638-2317 AD - The George Institute for Global Health, UNSW Sydney, Sydney, New South Wales, Australia. FAU - Hansen, Michael K AU - Hansen MK AD - Janssen Research & Development, LLC, Spring House, Pennsylvania, USA. FAU - Ix, Joachim H AU - Ix JH AUID- ORCID: 0000-0002-8084-9869 AD - Nephrology Section, Veterans Affairs San Diego Healthcare System, La Jolla, California, USA. AD - Division of Nephrology-Hypertension, Department of Medicine, University of California San Diego, San Diego, California, USA. FAU - Heerspink, Hiddo J L AU - Heerspink HJL AUID- ORCID: 0000-0002-3126-3730 AD - Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands. AD - The George Institute for Global Health, UNSW Sydney, Sydney, New South Wales, Australia. LA - eng PT - Clinical Trial PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220628 PL - England TA - Diabetes Obes Metab JT - Diabetes, obesity & metabolism JID - 100883645 RN - 0 (Albumins) RN - 0 (Sodium-Glucose Transporter 2) RN - 0 (Sodium-Glucose Transporter 2 Inhibitors) RN - 0SAC974Z85 (Canagliflozin) RN - 9NEZ333N27 (Sodium) RN - AYI8EX34EU (Creatinine) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Albumins MH - Canagliflozin/therapeutic use MH - Creatinine/urine MH - *Diabetes Mellitus, Type 2/chemically induced/complications/drug therapy MH - Glucose/therapeutic use MH - Humans MH - Inflammation/chemically induced/drug therapy MH - Mediation Analysis MH - Sodium MH - Sodium-Glucose Transporter 2 MH - *Sodium-Glucose Transporter 2 Inhibitors/therapeutic use PMC - PMC9546391 OTO - NOTNLM OT - CANVAS OT - KIM-1 OT - MCP-1 OT - albuminuria OT - canagliflozin OT - type 2 diabetes COIS- T. Sen, A. Koshino, M.J. Bijlsma and J. Li have nothing to disclose. B. Neal is an employee of the George Institute for Global Health and is supported by a National Health and Medical Research Council Investigator Grant. His institution has received fees for his roles in advisory boards, steering committees or scientific presentations from AstraZeneca, Janssen, Merck and Mundipharma. C. Arnott is an employee of the George Institute for Global Health and is supported by an NSW Health Early- and Mid-Career Researcher Grant and a Medical Research Future Fund Investigator Grant. M.K. Hansen is an employee of Janssen Research & Development, LLC. J.H. Ix is serving on the National Academy of Medicine panel "Review of the Dietary Reference Intakes for Sodium and Potassium" and is receiving research grant support from the National Institute of Diabetes and Digestive and Kidney Diseases, the National Heart, Lung, and Blood Institute, and the American Heart Association. H.J.L. Heerspink has served as a consultant for AbbVie, AstraZeneca, Bayer, Boehringer Ingelheim, Chinook, CSL Behring, Dimerix, Eli-Lilly, Gilead, Goldfinch, Janssen, Merck, Novo Nordisk and Travere Pharmaceuticals, and has received grant support from AbbVie, AstraZeneca, Boehringer Ingelheim, Janssen and Novo Nordisk. EDAT- 2022/06/01 06:00 MHDA- 2022/09/09 06:00 PMCR- 2022/10/07 CRDT- 2022/05/31 12:24 PHST- 2022/05/09 00:00 [revised] PHST- 2022/03/16 00:00 [received] PHST- 2022/05/25 00:00 [accepted] PHST- 2022/06/01 06:00 [pubmed] PHST- 2022/09/09 06:00 [medline] PHST- 2022/05/31 12:24 [entrez] PHST- 2022/10/07 00:00 [pmc-release] AID - DOM14779 [pii] AID - 10.1111/dom.14779 [doi] PST - ppublish SO - Diabetes Obes Metab. 2022 Oct;24(10):1950-1956. doi: 10.1111/dom.14779. Epub 2022 Jun 28.