Magnesium balances and /sup 28/Mg studies in man
The intestinal absorption of magnesium was determined under strictly controlled dietary conditions in patients with normal renal function and also in patients with chronic renal failure. The average net absorption of magnesium of patients with normal renal function, expressed as percent of the magnesium intake, was 48.5%, while that of patients with chronic renal failure was significantly lower, 17%. Increasing the calcium intake from a low calcium intake of 200 mg/day to different higher intake levels up to 2000 mg/day did not change the magnesium balance nor the net absorption of magnesium of both types of patients. The lack of effect of the higher calcium intake on the absorption of magnesium was confirmed in /sup 28/Mg studies in which an oral dose of /sup 28/Mg, as the chloride, was given. The excretion of the absorbed magnesium into the intestine, the endogenous fecal magnesium, was low. Also, increasing the phosphorus intake up to 2000 mg/day in subjects with normal renal function did not affect the magnesium balance, regardless of the calcium intake.
- Research Organization:
- Veterans Administration Hospital, Hines, IL (USA)
- OSTI ID:
- 5941113
- Report Number(s):
- CONF-8805159-
- Journal Information:
- Trace Subst. Environ. Health; (United States), Vol. 12; Conference: 22. annual conference on trace substances in environmental health, St. Louis, MO, USA, 23-26 May 1988
- Country of Publication:
- United States
- Language:
- English
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59 BASIC BIOLOGICAL SCIENCES
CALCIUM
BIOLOGICAL EFFECTS
KIDNEYS
DYNAMIC FUNCTION STUDIES
MAGNESIUM
INTESTINAL ABSORPTION
PHOSPHORUS
MAGNESIUM 28
MAN
METABOLISM
PATIENTS
TRACER TECHNIQUES
UROGENITAL SYSTEM DISEASES
ABSORPTION
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METALS
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
DISEASES
ELEMENTS
EVEN-EVEN NUCLEI
HOURS LIVING RADIOISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MAGNESIUM ISOTOPES
MAMMALS
METALS
NONMETALS
NUCLEI
ORGANS
PRIMATES
RADIOISOTOPES
UPTAKE
VERTEBRATES
560300* - Chemicals Metabolism & Toxicology
550501 - Metabolism- Tracer Techniques