PMID- 25277744 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20141021 LR - 20211021 IS - 2049-3614 (Print) IS - 2049-3614 (Electronic) IS - 2049-3614 (Linking) VI - 3 IP - 4 DP - 2014 Dec TI - On the role of gallbladder emptying and incretin hormones for nutrient-mediated TSH suppression in patients with type 2 diabetes. PG - 193-9 LID - 10.1530/EC-14-0088 [doi] AB - Bile acids are possible candidate agents in newly identified pathways through which energy expenditure may be regulated. Preclinical studies suggest that bile acids activate the enzyme type 2 iodothyronine deiodinase, which deiodinates thyroxine (T4) to the biologically active triiodothyronine (T3). We aimed to evaluate the influence of bile acid exposure and incretin hormones on thyroid function parameters in patients with type 2 diabetes. Thyroid-stimulating hormone (TSH) and thyroid hormones (total T3 and free T4) were measured in plasma from two human studies: i) 75 g-oral glucose tolerance test (OGTT) and three isocaloric (500 kcal) and isovolaemic (350 ml) liquid meals with increasing fat content with concomitant ultrasonographic evaluation of gallbladder emptying in 15 patients with type 2 diabetes and 15 healthy age, gender and BMI-matched controls (meal-study) and ii) 50 g-OGTT and isoglycaemic intravenous glucose infusions (IIGI) alone or in combination with glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide 1 (GLP1) and/or GLP2, in ten patients with type 2 diabetes (IIGI-study). In both studies, TSH levels declined (P<0.01) similarly following all meal and infusion stimuli. T3 and T4 concentrations did not change in response to any of the applied stimuli. TSH levels declined independently of the degree of gallbladder emptying (meal-study), route of nutrient administration and infusion of gut hormones. In conclusion, intestinal bile flow and i.v. infusions of the gut hormones, GIP, GLP1 and/or GLP2, do not seem to affect thyroid function parameters. Thus, the presence of a 'gut-thyroid-pituitary' axis seems questionable. CI - (c) 2014 The authors. FAU - Sonne, David P AU - Sonne DP AD - Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark dpsonne@gmail.com. FAU - Lund, Asger AU - Lund A AD - Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark. FAU - Faber, Jens AU - Faber J AD - Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark. FAU - Holst, Jens J AU - Holst JJ AD - Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark. FAU - Vilsboll, Tina AU - Vilsboll T AD - Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark. FAU - Knop, Filip K AU - Knop FK AD - Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark Department of MedicineCenter for Diabetes Research, Gentofte Hospital, University of Copenhagen, Kildegardsvej 28, DK-2900 Hellerup, DenmarkDepartment of Biomedical SciencesFaculty of Health and Medical Sciences, The NNF Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DenmarkDepartment of EndocrinologyHerlev Hospital, University of Copenhagen, Herlev, Denmark. LA - eng PT - Journal Article DEP - 20141002 PL - England TA - Endocr Connect JT - Endocrine connections JID - 101598413 PMC - PMC4201783 OTO - NOTNLM OT - GLP1 OT - TGR5 OT - TSH OT - bile acids OT - gallbladder OT - glucagon-like peptide 1 OT - thyroid OT - thyroid-stimulating hormone OT - type 2 diabetes EDAT- 2014/10/04 06:00 MHDA- 2014/10/04 06:01 PMCR- 2014/10/18 CRDT- 2014/10/04 06:00 PHST- 2014/10/04 06:00 [entrez] PHST- 2014/10/04 06:00 [pubmed] PHST- 2014/10/04 06:01 [medline] PHST- 2014/10/18 00:00 [pmc-release] AID - EC-14-0088 [pii] AID - EC140088 [pii] AID - 10.1530/EC-14-0088 [doi] PST - ppublish SO - Endocr Connect. 2014 Dec;3(4):193-9. doi: 10.1530/EC-14-0088. Epub 2014 Oct 2.