help+ not sure?!

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frogsrcool
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help+ not sure?!

Post by frogsrcool » Wed Mar 14, 2007 9:04 pm

what is the role of ACTH when the skin is exposed to ultraviolet light?
:?

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Revenged
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Post by Revenged » Fri Mar 16, 2007 6:46 pm

i have not heard of such a use... maybe you can exapand a bit on what this is about... and the context....

ACTH is a hormone produced by the anterior pituitary gland and its main use is to stimulate production of cortisol from the adrenal cortex...

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MrMistery
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Post by MrMistery » Sat Mar 17, 2007 3:48 pm

ACTH directly stimulates the deposition of melanin into the cells of the skin, thus giving you protection against UV light. AN oversecretion of ACTH causes more melanin than necessary to be deposited, resulting in what is refered to as tanned diabetus(not sure about translation..)
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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Poison
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Post by Poison » Mon Mar 19, 2007 7:46 pm

I learned something new today. :)
It matters not how strait the gate
How charged with punishment the scroll
I am the Master of my fate
I am the Captain of my soul.

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Revenged
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Post by Revenged » Mon Mar 19, 2007 10:11 pm

MrMistery wrote:ACTH directly stimulates the deposition of melanin into the cells of the skin, thus giving you protection against UV light. AN oversecretion of ACTH causes more melanin than necessary to be deposited, resulting in what is refered to as tanned diabetus(not sure about translation..)


Interesting...

Is this the reason for hyperpigmentation in Addison's disease?

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