Document Detail


Luteolytic influence of intrauterine dead embryos in the early pregnant rat.
MedLine Citation:
PMID:  6722236     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present investigation was an endeavour to study if annihilation of embryos in the uterus of the rat before the establishment of placental luteotropic functions has any influence on corpus luteal function, and, if there is any, whether it is local or systemic. The responsibility of pregnancy maintenance was imposed on a single ovary by performing unilateral ovariectomy after implantation (on Day 5 postcoitum). The implantation sites in one uterine horn, either ipsilateral or contralateral to the remaining ovary, were selectively destroyed by injecting 0.1 ml of sterile normal saline to that particular horn only, and the peripheral progesterone level and viability of the embryos in the untreated horn, which depended on the functions of the remaining ovary, were examined. Selective killing of embryos in the uterine horn of the ovariectomized side did not exert any influence on the fetal viability in the untreated horn ( nonovariectomized side) and the peripheral progesterone level also remained statistically unaffected. On the contrary, induction of fetal resorptions in the uterine horn of the intact side produced a significant fall in the peripheral level of progesterone and induced resorption of embryos of the ovariectomized side also. The latter could significantly be prevented by simultaneous administration of exogenous progesterone, indicating luteolysis as the major, if not sole, factor responsible for fetal resorption in the untreated horn. The luteolytic effect was attributed neither to saline itself, nor to the distension of the uterine horn caused by saline injection. Luteolytic factors from the dead embryo-bearing horn which act locally on the adjacent ovary only, are discussed.
Authors:
S N Kabir; A K Pal; A Pakrashi
Related Documents :
12521726 - Reduction in the occurrence of uterine rupture in central india.
12744146 - Clinical and sonographic estimations of uterine weight.
20112286 - Retinoic acid-metabolizing enzyme cytochrome p450 26a1 (cyp26a1) is essential for impla...
17406876 - Uterine prolapse complicating pregnancy.
3883266 - Accurate diagnosis of early ectopic pregnancy.
19235816 - Factors influencing the duration of pregnancy termination with vaginal misoprostol for ...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Biology of reproduction     Volume:  30     ISSN:  0006-3363     ISO Abbreviation:  Biol. Reprod.     Publication Date:  1984 Apr 
Date Detail:
Created Date:  1984-07-02     Completed Date:  1984-07-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0207224     Medline TA:  Biol Reprod     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  532-6     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Castration
Corpus Luteum / physiopathology
Corpus Luteum Maintenance*
Embryo Implantation*
Embryo Loss
Female
Luteolysis*
Pregnancy
Progesterone / blood
Pseudopregnancy / physiopathology
Rats
Chemical
Reg. No./Substance:
57-83-0/Progesterone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  A study of primary affective disorder in the People's Republic of China.
Next Document:  Nightly duration of pineal melatonin secretion determines the reproductive response to inhibitory da...