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USMLE Step 1 Buzzwords Buzzwords that should ring a bell in USMLE Step 1 exam.


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  #1  
Old 03-21-2010
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Star Estradiol vs Estrone vs Estriol

There are three types of estrogens in the human female body and the boards usually likes to tease us with these various types.

Here's a quick encounter about these three hormones that should be enough for USMLE prep:

Estradiol: Is the young female's hormone of femininity. It's also called E2. It's prododuced by aromatization of Testosterone in the Graafian follicle (granulosa cell). It's the most potent estrogen with the highest effect on receptors.

Estrone: Is the estrogen of the menopause. It's produced by aromatization of androstenedione in peripheral (fatty) tissue. It's also called E1. It's less potent than Estradiol.

Estriol: Is the placental estrogen and it's only seen during pregnancy and it's high levels reflects fetal well being. It's also called E3. It's the least potent of all estrogens. It originates from the fetal adrenal gland in the form of DHEA Sulfate and then is finally transformed to Estriol in the placenta by the sulfatase enzyme.

Last edited by lee-usmle; 04-06-2010 at 05:01 PM.
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  #2  
Old 12-15-2010
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Default mnemonic

this sounds funny, but an easy one...

1. Estr'ONE' = E1 = appears when menstual cycles are g'ONE'.

2. Estra'DI'ol = E2 = peaks 'D'uring 'I'ntermenstrual period.

3. Es'TRI'ol = E3 = appears during the 'TRI'mesters of pregnancy.
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Old 12-15-2010
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thank u so much esp 4 d mnemonic..this marks d end of alota confusion 4 me!
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Old 11-24-2011
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u can remember order of appearance as


A estrAdiol reproductive yrs
I estrIol pregnancy
O estrOne postmenopause
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Old 02-13-2012
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Arrow Sources of Estrogen

So doing reproduction in FA and needed helping making sure I had this down in terms where three types of estrogen are made:

Male
Estrone - Adipose

Estradiol - Sertoli Cells

Estriol - none


Female

Estrone - Adipose and Ovaries

Estradiol - Granulosa cells and Placenta

Estriol - Placenta
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  #6  
Old 02-13-2012
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Default

Quote:
Originally Posted by gear2d View Post
So doing reproduction in FA and needed helping making sure I had this down in terms where three types of estrogen are made:

Male
Estrone - Adipose

Estradiol - Sertoli Cells

Estriol - none


Female

Estrone - Adipose and Ovaries

Estradiol - Granulosa cells and Placenta

Estriol - Placenta
Yup! Corrects...

But the thing for estriol in females is although first aid says placenta... Other books say fetus..

Anyhow it's a direct monitoring parameter of fetal well being
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Old 02-28-2016
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thank you guys for sharing, its really helpful
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  #8  
Old 12-14-2016
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thank you guys.
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Endocrine-, Physiology-, Reproductive-

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Estradiol vs Estrone vs Estriol - USMLE Forums This thread Refback 11-24-2011 08:33 AM
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