LH, FSH, oestrogens & progesterone

[Jean-Louis Cordonnier]

Hi everybody.
This year, I have to teach about sexual hormons, ...
The production of ovarian hormons is regulated by LH and FSH, produced by
the hypophyse. The production of those two hormons depends on ovarian
hormon concentration ; its a beautiful example of a non homeostatic loop,
that produces fluctuations (menstruations, ...).

Does any of you know if there is a model (Stella, Vensim or other) of this
physiological feed-back ?
Thanks for your expected replys.

Jean-Louis Cordonnier
jlcord@wanadoo.fr


Jean-Louis Cordonnier
36, rue Lavisse
66000 PERPIGNAN
FRANCE
jlcord@wanadoo.fr

[George Richardson]

> Does any of you know if there is a model (Stella, Vensim or other) of this
> physiological feed-back ?

Indeed I do. In the 1970s a student of mine, Bill Silverman, did his
bachelors thesis on this topic, building an endogenous theory of the
menstrual cycle. Excellent work. I have a copy if you want it. [The
model is in DYNAMO, as almost system dynamics models were in those days,
but translation should not be difficult.]

...GPR

-----------------------------------------------------------------------
George P. Richardson G.P.Richardson@Albany.edu
Rockefeller College of Public Affairs and Policy Phone: 518-442-3859
University at Albany - SUNY, Albany, NY 12222 Fax: 518-442-3398
http://cnsvax.albany.edu/~gr383/
-----------------------------------------------------------------------

[Alan Graham]

"Feedback processes underlying the onset of puberty in males" alan k.
graham, 1974 MIT EE Thesis, orderable through MITs web site.

Alan K. Graham, Ph.D.
Pugh-Roberts Associates,
a division of PA Consulting Group
41 Linskey Way
Cambridge, MA 02142
Phone: (617) 864-8880
Fax: (617) 864-8884
E-mail: Alan.K.Graham@pa-consulting.com
www.pa-consulting.com/pra.htm