THE EFFECT OF MIROESTROL ON VAGINAL CORNIFICATION, PITUITARY FUNCTION AND PREGNANCY IN THE RAT

1961 ◽  
Vol 22 (3) ◽  
pp. 293-302 ◽  
Author(s):  
H. E. H. JONES ◽  
H. B. WAYNFORTH ◽  
G. S. POPE

SUMMARY 1. The effectiveness of miroestrol in causing cornification of the vagina of the ovariectomized rat, inhibiting pituitary activity of the adult male rat and preventing pregnancy in the mated female rat has been compared with that of hexoestrol and stilboestrol when each oestrogen is administered either subcutaneously or orally. 2. Inhibition of pituitary function and prevention of pregnancy by these substances are directly related to their activity in producing cornification of the vaginal epithelium. Only large doses of oestrogen produce the first two responses fully. 3. When administered subcutaneously miroestrol has about 0·3 of the potency of stilboestrol and 0·25 of that of hexoestrol in each response studied. By oral administration it is 0·8 as potent as stilboestrol and more potent than hexoestrol. Since the potency of miroestrol compared with a given oestrogen administered in the same way is of the same order in each response, it is concluded that these substances are only capable of inhibiting the function of the pituitary and of preventing pregnancy because of their oestrogenic activity.

Endocrinology ◽  
1984 ◽  
Vol 115 (4) ◽  
pp. 1568-1576 ◽  
Author(s):  
CYNTHIA G. GOODYER ◽  
LUCIE DE STEPHANO ◽  
HARVEY J. GUYDA ◽  
BARRY I. POSNER

1970 ◽  
Vol 120 (2) ◽  
pp. 409-416 ◽  
Author(s):  
Prabhakar D. Lotlikar

1. Enzymic esterifications of 2-(N-hydroxyacetamido)fluorene and several other hydroxamic acids by liver cytosol were studied. Determination of 2-acetamido-3-methylthiofluorene was used for the assay. 2. With rat liver cytosol, requirement for ATP, Mg2+ and SO42− suggested formation of phosphate and sulphate esters of 2-(N-hydroxyacetamido)fluorene. 3. Rats showed sex and age differences in their activity. Liver from adult male rat was at least twice as active as liver from adult female rat. No such sex differences were found in mice, hamsters and guinea pigs. 4. Administration of testosterone (300μg/day) subcutaneously for 8 days increased the activity in the female rat by 100%, whereas diethylstilboestrol (100μg/day) had no effect. In the male rat diethylstilboestrol treatment decreased the activity by 60%, whereas testosterone pretreatment was without any effect. 5. Among various endocrine ablations such as adrenalectomy, castration, adrenalectomy–castration and hypophysectomy in the adult male rat, hypophysectomy was found to be the most effective in decreasing the activity of the liver to about 50% of control values. 6. Like 2-(N-hydroxyacetamido)fluorene, various other N-hydroxy derivatives of 2-acetamido-7-fluorofluorene, 2-acetamidophenanthrene, 4-acetamidobiphenyl and 4-acetamidostilbene were also shown to be esterified to different extents by rat liver cytosol.


1979 ◽  
Vol 2 (1-6) ◽  
pp. 150-161 ◽  
Author(s):  
Barbara Zielinska-Psuja ◽  
A. Lukaszyk ◽  
W. Senczuk

2014 ◽  
Vol 76 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Erin K. Zinkhan ◽  
Brook Y. Lang ◽  
Baifeng Yu ◽  
Yan Wang ◽  
Chengshe Jiang ◽  
...  

2016 ◽  
Vol 258 ◽  
pp. S308-S309 ◽  
Author(s):  
M. Kemény ◽  
H.A. Marxfeld ◽  
R. Buesen ◽  
A. Chukwudebe ◽  
B. Van Ravenzwaay ◽  
...  
Keyword(s):  
Male Rat ◽  

Neuroscience ◽  
2009 ◽  
Vol 158 (4) ◽  
pp. 1644-1651 ◽  
Author(s):  
S.B. Pinnock ◽  
S.E. Lazic ◽  
H.T. Wong ◽  
I.H.W. Wong ◽  
J. Herbert

2021 ◽  
pp. 108751
Author(s):  
Rodrigo Moraga-Amaro ◽  
Raul Díaz-Galarce ◽  
Juan P. Donoso-Ramos ◽  
Valentina Ugalde ◽  
Sergio Linsambarth ◽  
...  

2016 ◽  
Vol 46 ◽  
pp. 1573-1578 ◽  
Author(s):  
Mohammad KHALAJ-KONDORI ◽  
Farzaneh SADEGHI ◽  
Mohammad Ali HOSSEINPOURFEIZI ◽  
Farzam SHAIKHZADEH-HESARI ◽  
Aylar NAKHLBAND ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document