Page 1 of 1: surg:Reverse T3 is :

BRAVO · Credits: 46015 My Scrapbook

Reverse T3 is :

1)T4 converted to T3 having hormone action
2)synthetic T3
3)inactive form of T3
4)none of the above.

drlouis · Credits: 5374 My Scrapbook

Reverse T3 is -inactive form of T3--A form of inactive triiodothyronine (T3) that is formed during periods of stress on the body

Type 3 iodothyronine deiodinase (D3) is the physiologic inactivator of thyroid hormones, catalyzing the inner ring deiodination of thyroxine (T(4)) to reverse triiodothyronine (rT(3)) and (T(3)) to 3, 3'-diiodothyronine (T(2)), both of which are biologically inactive.

Critical illness is associated with reduced TSH and thyroid hormone secretion, and with changes in peripheral thyroid hormone metabolism, resulting in low serum T3 and high rT3.

drlouis · Credits: 5374 My Scrapbook

WILSON`S T3 CONVERSION SYNDROME

-AT PERIODS OF STRESS-INCREASED CORISOL INHIBITS THE PRIME 5 DEIODINASE THAT CONVERTS T4 TO T3,SO THAT MOST OF THE T4 IS SHUNTED TO REVERSE T3, WITH SYMPTOMS OF HYPOTHYROIDISM BUT NORMAL OR NEAR NORMAL TFT.

doctorakash · Credits: 1673 My Scrapbook

soo whta reverse t3???inactive t3 or t4 reversed to t3?

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