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CCLAB-TRACEELEMENTS
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Cards (6)
TRACE
ELEMENTS
Consist of
metals
, except
selenium
,
halogens
,
fluoride
, and
iodine.
Essential trace elements are important for the maintenance of
normal health
and
tissue
and
organ
functions.
Trace elements have specific
in vivo metabolic
functions that cannot be effectively performed by other similar elements.
Concentration in tissue = <
1ug/g
of
wet tissue
and <
0.01
% of
dry body weight
Chromium
Function = enhances
insulin
action; for
glucose
and
lipid
metabolism.
Deficiency =
insulin resistance
,
impaired glucose tolerance
(
type 2 DM
),
hyperlipidemia
Toxicity =
skin ulcers
,
renal
and
hepatic necrosis
Cobalt
Function =
hemoglobin
synthesis; component of
B12
Deficiency =
anemia
,
growth depression
Toxicity =
heart failure
,
hypothyroidism
Copper
Function =
cellular respiration
;
collagen
synthesis
Deficiency =
Menkes' kinky hair
syndrome,
muscle weakness
Toxicity = interferes with absorption of
iron
and
zinc
Fluorine
Function =
prevents dental carries
Deficiency =
dental carries
Iodine
Function =
thyroid hormone
synthesis
Deficiency =
goiter
,
cretinism
,
myxedema
Toxicity =
thyrotoxicosis
Iron
Function =
oxygen transport
, component of
hemoglobin
Deficiency =
anemia
Toxicity =
hemachromatosis
Manganese
Function =
bone
and
connective
tissue functions
Deficiency =
skeletal defects
Toxicity =
psychiatric disorders
,
Parkinson's disease
Molybdenum
Function =
DNA metabolism
Deficiency =
growth depression
,
cretinism
,
goiter
Toxicity =
anemia
,
thyrotoxicosis
Selenium
Function = prevents
oxidative damage
of
lipid
Deficiency =
Keshan
disease
Toxicity =
hair
and
nail loss
,
liver failure
Zinc
Function =
protein
synthesis
Deficiency =
acrodermatitis enteropathica
,
growth retardation
,
immune deficiency
,
infertility
,
delayed wound healing
,
osteoporosis
Toxicity =
gastrointestinal irritation