[Calcium absorption in the small intestine in rats during hypokinesia].
The method of averted and non-averted segments was used to assess calcium absorption in the small intestine of adult and young rats with hypokinesia. A certain decrease in the active (by 13.8%) and more manifest diminution of the total (by 26.3%) calcium transport was established in adult rats after 4 weeks of hypokinesia. In young rats a significant lowering of the active calcium transport was already noted after 1 week of hypokinesia, however, age-dependent shifts in the process were more significant than those induced by hypokinesia. Changes in the calcium-regulating hormones are considered as a possible cause of decreased calcium absorption in the intestine in relation to hypokinesia and age.
D000375:Aging / Q000502:physiology; D000818:Animals; D001692:Biological Transport; D002118:Calcium / Q000378:metabolism*; D066298:In Vitro Techniques; D007408:Intestinal Absorption; D007421:Intestine, Small / Q000378:metabolism*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D012149:Restraint, Physical; D013997:Time Factors
D002118:Calcium
Vsasyvanie kal'tsiia v tonkoĭ kishke krys pri gipokinezii.