Coupling between Na+ and sugar for sugar transport in a few Indian teleosts.
Transepithelial transport of D-glucose and D-xylose depends on the sodium ions in the filling solution in the fishes Ophiocephalus punctatus (carnivorous) and Heteropneustes fossilis (omnivorous). Under low Na+ concentration, the rate of transport decreases, while an increase in concentration brings about a corresponding increase in the transport of these nutrients in both fishes. In most of the cases, at different Na+ concentrations significant differences is in the absorbed amount. Glucose transport is affected by Na+ more than the transport of xylose and regional variations occur in the transported amount.
D000818:Animals; D001692:Biological Transport / Q000187:drug effects; D005399:Fishes / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism*; D066298:In Vitro Techniques; D007421:Intestine, Small / Q000378:metabolism*; D012964:Sodium / Q000494:pharmacology*; D013045:Species Specificity; D014994:Xylose / Q000378:metabolism
D012964:Sodium; D014994:Xylose; D005947:Glucose