PMID- 27012770 OWN - NLM STAT- MEDLINE DCOM- 20170608 LR - 20220318 IS - 1522-1547 (Electronic) IS - 0193-1857 (Linking) VI - 310 IP - 11 DP - 2016 Jun 1 TI - Intestinal SGLT1 in metabolic health and disease. PG - G887-98 LID - 10.1152/ajpgi.00068.2016 [doi] AB - The Na(+)-glucose cotransporter 1 (SGLT1/SLC5A1) is predominantly expressed in the small intestine. It transports glucose and galactose across the apical membrane in a process driven by a Na(+) gradient created by Na(+)-K(+)-ATPase. SGLT2 is the major form found in the kidney, and SGLT2-selective inhibitors are a new class of treatment for type 2 diabetes mellitus (T2DM). Recent data from patients treated with dual SGLT1/2 inhibitors or SGLT2-selective drugs such as canagliflozin (SGLT1 IC50 = 663 nM) warrant evaluation of SGLT1 inhibition for T2DM. SGLT1 activity is highly dynamic, with modulation by multiple mechanisms to ensure maximal uptake of carbohydrates (CHOs). Intestinal SGLT1 inhibition lowers and delays the glucose excursion following CHO ingestion and augments glucagon-like peptide-1 (GLP-1) and peptide YY (PYY) secretion. The latter is likely due to increased glucose exposure of the colonic microbiota and formation of metabolites such as L cell secretagogues. GLP-1 and PYY secretion suppresses food intake, enhances the ileal brake, and has an incretin effect. An increase in colonic microbial production of propionate could contribute to intestinal gluconeogenesis and mediate positive metabolic effects. On the other hand, a threshold of SGLT1 inhibition that could lead to gastrointestinal intolerability is unclear. Altered Na(+) homeostasis and increased colonic CHO may result in diarrhea and adverse gastrointestinal effects. This review considers the potential mechanisms contributing to positive metabolic and negative intestinal effects. Compounds that inhibit SGLT1 must balance the modulation of these mechanisms to achieve therapeutic efficacy for metabolic diseases. CI - Copyright (c) 2016 the American Physiological Society. FAU - Lehmann, Anders AU - Lehmann A AD - Division of Endocrinology, Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; and. FAU - Hornby, Pamela J AU - Hornby PJ AD - Cardiovascular and Metabolic Disease, Janssen Research and Development, LLC, Spring House, Pennsylvania phornby@its.jnj.com. LA - eng PT - Journal Article PT - Review DEP - 20160324 PL - United States TA - Am J Physiol Gastrointest Liver Physiol JT - American journal of physiology. Gastrointestinal and liver physiology JID - 100901227 RN - 0 (SLC5A1 protein, human) RN - 0 (Sodium-Glucose Transporter 1) SB - IM MH - Animals MH - Enteroendocrine Cells/metabolism MH - Gastrointestinal Motility MH - Humans MH - Intestinal Absorption MH - Intestinal Mucosa/*metabolism MH - Metabolic Diseases/drug therapy/genetics/*metabolism/microbiology MH - Sodium-Glucose Transporter 1/antagonists & inhibitors/genetics/*metabolism OTO - NOTNLM OT - SLC5A1 OT - diarrhea OT - gluconeogenesis OT - glucose tolerance OT - ileal brake OT - incretin OT - microbiome OT - monosaccharide OT - sodium/hydrogen exchanger isoform 3 OT - taste receptors EDAT- 2016/03/26 06:00 MHDA- 2017/06/09 06:00 CRDT- 2016/03/26 06:00 PHST- 2016/02/15 00:00 [received] PHST- 2016/03/21 00:00 [accepted] PHST- 2016/03/26 06:00 [entrez] PHST- 2016/03/26 06:00 [pubmed] PHST- 2017/06/09 06:00 [medline] AID - ajpgi.00068.2016 [pii] AID - 10.1152/ajpgi.00068.2016 [doi] PST - ppublish SO - Am J Physiol Gastrointest Liver Physiol. 2016 Jun 1;310(11):G887-98. doi: 10.1152/ajpgi.00068.2016. Epub 2016 Mar 24.