Biomaterial Database

Zinc tolerance tests in zinc deficient and zinc supplemented diets. 1986

J J Fickel, and J H Freeland-Graves, and M J Roby

Seven men consumed a low-zinc (3.3 mg/day) diet for 8 wk, followed by zinc-repletion (+15 mg/day) for 12 days. Zinc tolerance tests (50 mg) were administered initially and following depletion and repletion periods. Plasma zinc after 2 h in the zinc tolerance test was marginally higher after both the depletion (p less than 0.06) and repletion (p less than 0.001) periods as compared to the initial test. No changes were seen in parotid zinc tolerance tests or fasting levels of zinc in plasma or parotid saliva. In a subsequent study, zinc tolerance tests were given to normal subjects before and after 12 days of zinc supplementation (15 mg/day). Again, zinc levels in plasma were increased following zinc supplementation at the 2nd h post-zinc dose, but levels in saliva did not change. The elevation of plasma zinc curves with both zinc deficiency and supplementation suggests that this test is not a reliable indicator of zinc status.

UI	MeSH Term	Description	Entries
D007408	Intestinal Absorption	Uptake of substances through the lining of the INTESTINES.	Absorption, Intestinal
D008297	Male		Males
D008668	Metallothionein	A low-molecular-weight (approx. 10 kD) protein occurring in the cytoplasm of kidney cortex and liver. It is rich in cysteinyl residues and contains no aromatic amino acids. Metallothionein shows high affinity for bivalent heavy metals.	Isometallothionein,Metallothionein A,Metallothionein B,Metallothionein I,Metallothionein II,Metallothionein IIA
D010306	Parotid Gland	The largest of the three pairs of SALIVARY GLANDS. They lie on the sides of the FACE immediately below and in front of the EAR.	Gland, Parotid,Glands, Parotid,Parotid Glands
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D012463	Saliva	The clear, viscous fluid secreted by the SALIVARY GLANDS and mucous glands of the mouth. It contains MUCINS, water, organic salts, and ptylin.	Salivas
D015032	Zinc	A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.