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Maternal Recognition of Pregnancy - Anatomy & Physiology (view source)
Revision as of 21:36, 13 September 2008
, 21:36, 13 September 2008→Ruminants
* As a result, there is no production of the luteolytic factor PGF2α and the corpus luteum is maintained.
* As a result, there is no production of the luteolytic factor PGF2α and the corpus luteum is maintained.
* The corpus luteum then produces progesterone to maintain the pregnancy.
* The corpus luteum then produces progesterone to maintain the pregnancy.
=== The Conceptus ===
* The ruminant conceptus undergoes rapid elongation between day 14 and 16.
* During this period, IFN-τ is secreted at high levels before decreaseing.
* Small embryos produce much less IFN-τ than larger embryos.
* There is a hige proportion of embryo loss in the first 3 weeks of gestation, as small embryos fail to secrete enough IFN-τ in this critical period. Thus they do not block luteolysis.
** This may be related to poor nutritional status of the mother.