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Glucose polymer increases jejunal calcium, magnesium, and zinc absorption in humans.

The present study investigated the effect of glucose polymer on jejunal calcium, magnesium, and zinc absorption in eight normal subjects, using the triple-lumen intestinal perfusion technique. For each subject, a 30-cm segment of jejunum was perfused for 60 min each with two different test solutions. When 4 mM glucose polymer was perfused net calcium absorption increased by fourfold (95 vs 488 mumol/30 cm/h), and net jejunal uptake of magnesium (393 mumol/30 cm/h) was observed, as compared to net magnesium secretion in the absence of glucose polymer. In addition, coadministration of glucose polymer doubled net zinc absorption (13 vs 29 mumol/30 cm/h). The rate of water absorption increased from 49 to 111 ml/30 cm/h. No further change in jejunal water and mineral absorption was observed when glucose polymer in the perfusate was increased from 4 to 8 mM. These results suggest that glucose polymer may have potential as an agent to significantly enhance mineral absorption.