title: Transglycosylated Starch Improves Insulin Response and Alters Lipid and Amino Acid Metabolome in a Growing Pig Model.
abstract: Due to the functional properties and physiological effects often associated with chemically modified starches, significant interest lies in their development for incorporation in processed foods. This study investigated the effect of transglycosylated cornstarch (TGS) on blood glucose, insulin, and serum metabolome in the pre- and postprandial phase in growing pigs. Eight jugular vein-catheterized barrows were fed two diets containing 72% purified starch (waxy cornstarch (CON) or TGS). A meal tolerance test (MTT) was performed with serial blood sampling for glucose, insulin, lipids, and metabolome profiling. TGS-fed pigs had reduced postprandial insulin (p< 0.05) and glucose (p< 0.10) peaks compared to CON-fed pigs. The MTT showed increased (p< 0.05) serum urea with TGS-fed pigs compared to CON, indicative of increased protein catabolism. Metabolome profiling showed reduced (p< 0.05) amino acids such as alanine and glutamine with TGS, suggesting increased gluconeogenesis compared to CON, probably due to a reduction in available glucose. Of all metabolites affected by dietary treatment, alkyl-acyl-phosphatidylcholines and sphingomyelins were generally increased (p< 0.05) preprandially, whereas diacyl-phosphatidylcholines and lysophosphatidylcholines were decreased (p< 0.05) postprandially in TGS-fed pigs compared to CON. In conclusion, TGS led to changes in postprandial insulin and glucose metabolism, which may have caused the alterations in serum amino acid and phospholipid metabolome profiles.
authors.affiliation: Institute of Animal Nutrition and Functional Plant Compounds, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, 1210 Vienna, Austria. Monica.Newman@vetmeduni.ac.at.
authors.forename: Monica A
authors.initials: MA
authors.lastname: Newman
authors.affiliation: Institute of Animal Nutrition and Functional Plant Compounds, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, 1210 Vienna, Austria. Qendrim.Zebeli@vetmeduni.ac.at.
authors.forename: Qendrim
authors.initials: Q
authors.lastname: Zebeli
authors.affiliation: Anaesthesiology and Perioperative Intensive Care, Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, 1210 Vienna, Austria. eva.eberspaecher@vetmeduni.ac.at.
authors.forename: Eva
authors.initials: E
authors.lastname: Eberspächer
authors.affiliation: Agrana Research & Innovation Center GmbH, 3430 Tulln, Austria. Dietmar.GRUELL@agrana.com.
authors.forename: Dietmar
authors.initials: D
authors.lastname: Grüll
authors.affiliation: Agrana Research & Innovation Center GmbH, 3430 Tulln, Austria. Timea.MOLNAR@agrana.com.
authors.forename: Timea
authors.initials: T
authors.lastname: Molnar
authors.affiliation: University Clinic for Swine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, 1210 Vienna, Austria. barbara.metzler@vetmeduni.ac.at.
authors.forename: Barbara U
authors.initials: BU
authors.lastname: Metzler-Zebeli
mesh_terms: D000596:Amino Acids / Q000097:blood / Q000737:chemistry*; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D004032:Diet; D007328:Insulin / Q000097:blood*; D050356:Lipid Metabolism; D008244:Lysophosphatidylcholines / Q000378:metabolism; D008297:Male; D055442:Metabolome; D023421:Models, Animal; D010713:Phosphatidylcholines / Q000378:metabolism; D019518:Postprandial Period; D013109:Sphingomyelins / Q000378:metabolism; D013213:Starch / Q000737:chemistry*; D013552:Swine; D014508:Urea / Q000097:blood
chemical_list: D000596:Amino Acids; D001786:Blood Glucose; D007328:Insulin; D008244:Lysophosphatidylcholines; D010713:Phosphatidylcholines; D013109:Sphingomyelins; D014508:Urea; D013213:Starch
keywords: insulin; meal tolerance test; metabolite profiles; metabolome; modified starch; pig model