Keith Komnick

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Intestinal permeability to Ca is greater in infant than in older rats, predisposing the infant rat to hypocalcemia. The present studies compared in suckling and adult rats the amount of Ca lost into the intestinal lumen in relation to plasma Ca during an acute 2-h in vivo recirculation perfusion of the jejunum and ileum with an isotonic NaCl solution either(More)
Because in infant rats the intestine is more permeable to Ca than in adults, the infant may be predisposed to hypocalcemia. In suckling (S, 14-15 day old) and adolescent (A, 8 week old) rats we measured net secretion of Ca into the lumen during in situ perfusion of the upper (J) and lower (I1) half of the small intestine with a Ca-free solution(More)
Summary: The in vivo absorption of L-valine was studied in segments of the jejunum and ileum using a one-pass perfusion technique in normal suckling (2-week-old), weanling (3-week-old) and adolescent (6-week-old) rats. In both the jejunum and the ileum, rate of absorption (μmoles/h/g wt) of L-valine declined with age. The relationship between absorption(More)
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