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Leucocyte involvement in lectin-induced deciduomata formation
1Department of Anatomy and Histology, University of Sydney, NSW, Australia.
Cell Biology International
|July 1, 1995
Summary
Concanavalin A (ConA) injection in rats triggers rapid white blood cell infiltration into the uterus. This process, linked to uterine trauma, appears to initiate decidualization, a key step in early pregnancy.
Area of Science:
- Reproductive biology
- Immunology
- Histology
Background:
- Decidualization is crucial for establishing and maintaining pregnancy.
- The role of immune cells and uterine trauma in initiating decidualization is not fully understood.
Purpose of the Study:
- To investigate the effect of Concanavalin A (ConA) on uterine immune cell infiltration and decidualization in rats.
Main Methods:
- Intra-uterine injection of ConA on day 5 of pseudopregnancy (PSP) in rats.
- Assessment of leucocyte infiltration into the uterine stroma.
- Evaluation of stromal oedema and decidualization using Pontamine Sky Blue staining.
- Microscopic examination for epithelial disruption and trauma.
Main Results:
- ConA injection induced rapid and persistent leucocyte infiltration throughout the rat uterine horn.
- Stromal oedema and decidualization were observed only in areas with evident leucocyte transmigration across the uterine epithelium.
- Epithelial disruption and trauma were frequently noted in these specific regions.
Conclusions:
- Concanavalin A (ConA) promotes leucocyte infiltration into the rat uterus.
- Decidualization is associated with areas of uterine epithelial trauma and leucocyte transmigration.
- ConA may initiate decidualization indirectly by causing uterine epithelial trauma.