Final: Chromium (Cr) Flashcards

1
Q

What is the function of Cr?

A

Stabilizes insulin and facilitates its interaction with receptors in tissues.

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2
Q

Where is Cr primarily absorbed?

A

small intestine

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3
Q

What are naturally occurring sources of Cr?

A

Brewer’s yeast (high bioavailability)

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4
Q

What are inorganic sources of Cr?

A

CrCl3, Cr2O3
Poorly absorbed but bioavailability increases when complexed with organic compounds (chromium proprionate, chromium picolinate).

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5
Q

What does Cr deficiency cause and why?

A

hyperglycemia; glucose tolerance factor is inactive

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6
Q

What is the benefit of Cr supplementation in pigs?

A

May improve number of piglets born and may also improve leanness of growing pigs

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7
Q

What is the benefit of Cr supplementation in cows?

A

Increased milk production

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8
Q

What is the toxicity of Cr+3 and what are some symptoms?

A

Relatively non-toxic;

allergic dermatitis from green tattoo ink, some jewelry

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9
Q

What is the toxicity of Cr+6 and what are the symptoms?

A

HIGHLY toxic;

Depresses mitochondrial function

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10
Q

What form of chromium in the diet is biologically available?

A

Brewer’s yeast, Cr complexed with organic compounds

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