title: Mouse intragastric infusion (iG) model.
abstract: Direct intragastric delivery of a diet, nutrient or test substance can be achieved in rodents (mice and rats) on a long-term (2-3 months) basis using a chronically implanted gastrostomy catheter and a flow-through swivel system. This rodent intragastric infusion (iG) model has broad applications in research on food intake, gastrointestinal (GI) physiology, GI neuroendocrinology, drug metabolism and toxicity, obesity and liver disease. It achieves maximal control over the rate and pattern of delivery and it can be combined with normal ad libitum feeding of solid diet if so desired. It may be adopted to achieve infusion at other sites of the GI system to test the role of a bypassed GI segment in neuroendocrine physiology, and its use in genetic mouse models facilitates the genetic analysis of a central question under investigation.
authors.affiliation: Southern California Research Center for ALPD and Cirrhosis, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA.
authors.forename: Akiko
authors.initials: A
authors.lastname: Ueno
authors.forename: Raul
authors.initials: R
authors.lastname: Lazaro
authors.forename: Ping-Yen
authors.initials: PY
authors.lastname: Wang
authors.forename: Reiichi
authors.initials: R
authors.lastname: Higashiyama
authors.forename: Keigo
authors.initials: K
authors.lastname: Machida
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Tsukamoto
mesh_terms: D000818:Animals; D004032:Diet; D004195:Disease Models, Animal; D005774:Gastrostomy / Q000379:methods*; D006799:Housing, Animal; D007441:Intubation, Gastrointestinal / Q000379:methods*; D008107:Liver Diseases; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D009765:Obesity