title: Absorption of 3-oxy-methyl-D-glucose by chicken cecum and jejunum in vivo.
abstract: Jejunal and cecal 3-oxy-methyl-D-glucose (3-OMG) absorption was studied in 4- to 8-week-old chickens by an in vivo perfusion technique (perfusion rate 1.5 ml/min). Total and phloridzin-insensitive 3-OMG absorption was tested for lumenal substrate concentrations ranging from 1.25 to 20 mmol/l. The estimated apparent Michaelis constants in jejunum and cecum were 5.1 and 4.0 mmol/l (Lineweaver-Burk method) and 3.2 and 3.1 mmol/l (visual inspection method), respectively. Vmax were similar in both segments with either method, about 0.3 mumol/cm2 X 5 min. Passive permeability coefficients were the same in both regions (about 45 l/cm2 X 5 min X 10(3)). The transport properties of the cecal epithelium in vivo suggest a role of these intestinal segments in the absorption of nutrients originated from digestive processes.
mesh_terms: D019325:3-O-Methylglucose; D000818:Animals; D002432:Cecum / Q000378:metabolism*; D002645:Chickens; D007408:Intestinal Absorption; D007583:Jejunum / Q000378:metabolism*; D007700:Kinetics; D008297:Male; D008757:Methylglucosides / Q000378:metabolism*; D008759:Methylglycosides / Q000378:metabolism*; D009928:Organ Specificity
chemical_list: D008757:Methylglucosides; D008759:Methylglycosides; D019325:3-O-Methylglucose