Retention of zinc and calcium from the human colon
- 1. Sahlgren's Hospital, Gothenburg, Sweden
Description
Colonic retention of zinc and calcium was studied after installation during colonoscopy of 30 mumol of zinc and 6.4 mmol of calcium labeled with 65Zn and 47Ca, and measurement of the whole-body retention of the radionuclides. After cecal installation in nine patients, retention (day 13) of zinc was 3.5 +/- 2.1% (mean +/- SD) and of calcium 3.5 +/- 2.7%. The calculated mean absorption was 4.1% for zinc and 14.1% for calcium. Application at the hepatic flexure in four patients resulted in a mean retention (day 13) of 1.2% for zinc and 0.6% for calcium. Under prevailing conditions, colonic absorption of zinc is relatively small, compared to the uptake after oral administration. Colonic absorption of calcium could, however, account for a substantial part of the total calcium uptake
Additional details
Publishing Information
- Journal Title
- Am. J. Clin. Nutr.
- Journal Issue
- no.4
- Series
- Am. J. Clin. Nutr.
- ISSN
- 0002-9165
- CODEN
- AJCNA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18036429
- Subject category
- S61: RADIATION PROTECTION AND DOSIMETRY; S60: APPLIED LIFE SCIENCES;
- Descriptors DEI
- CALCIUM; CALCIUM 47; INTESTINAL ABSORPTION; LARGE INTESTINE; ORAL ADMINISTRATION; PATIENTS; RETENTION; TRACER TECHNIQUES; ZINC; ZINC 65
- Descriptors DEC
- ALKALINE EARTH METALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BODY; CALCIUM ISOTOPES; DAYS LIVING RADIOISOTOPES; DIGESTIVE SYSTEM; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; EVEN-ODD NUCLEI; GASTROINTESTINAL TRACT; INTAKE; INTERMEDIATE MASS NUCLEI; INTESTINES; ISOTOPE APPLICATIONS; ISOTOPES; METALS; NUCLEI; ORGANS; RADIOISOTOPES; UPTAKE; ZINC ISOTOPES