Zinc Flashcards
What are general sources of zinc
red meats, seafood, poultry, pork, dairy products
what are some excellent sources of zinc
oysters, beef liver, crabmeat, ground beef, veal
what are some good sources of zinc
dark meat chicken, pork, shrimp
how is zinc digested
hydrolyzed by proteases and nucleases from amino acids and nucleic acids in stomach intestines
how is zinc absorbed
diffusion or saturated carrier mediated transport utilizing ZIP4 (zinc and Irt-like protein 4), some use DMT1
where is zinc absorbed
duodenum and upper jejunum
what is the absorption rate of zinc
20-40%
how is zinc transported
bound to albumin and sent to liver
where is zinc stored
liver, kidney, muscle, skin, bones
how is zinc stored
attached to metallothioein
what are some common s/s of zinc deficiency in children
growth retardation, skeletal abnormalities, poor wound healing, diarrhea, skin rash, delayed sexual matruation
what are some common s/s of zinc deficiency in adults
anorexia, diarrhea, lethargy, depression, skin rash, hypogeusia, alopecia, vision problems, impaired immune, impaired protein synth, impaired wound healing
How do we assess zinc status
serum or plasma zinc, metallothionein, urinary zinc excretion, ainc-dependent enzyme measurements
what are some of the s/s of zinc toxicity
metallic taste, headache, N/V, epigastric pain, abdominal cramps, bloody diarrhea, reduced immune function, alterations in copper and iron status
what is the RDA for men for zinc
11mg
