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Isolation of Leukocytes from the Murine Tissues at the Maternal-Fetal Interface
Published on: May 21, 2015
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Endocrine and immune system interactions during pregnancy
Vânia Brazão1, Christian Collins Kuehn1, Carla Domingues dos Santos1
1College of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo, Av. do Café s/n, 14040-903 Ribeirão Preto, São Paulo, Brazil.
Immunobiology
|September 27, 2014
Summary
Pregnancy alters maternal immunity by increasing corticosterone and nitric oxide (NO) while decreasing NK cell expression. This hormonal and immune shift supports fetal tolerance and maternal defense during gestation.
Area of Science:
- Immunology
- Endocrinology
- Reproductive Biology
Background:
- Pregnancy involves a delicate balance between maternal immune suppression for fetal tolerance and maintaining host defense against infection.
- Transient depression of cell-mediated immunity is a known phenomenon during pregnancy.
Purpose of the Study:
- To investigate endocrine and immunologic alterations during successful pregnancy in Wistar rats.
- To understand the hormonal modulation of the immune environment during gestation.
Main Methods:
- Quantification of plasma corticosterone levels.
- Analysis of peritoneal macrophage counts.
- Measurement of endogenous nitric oxide (NO) levels.
- Flow cytometry (FACS) analysis of NK cell CD161 expression.
- Assessment of lymphocyte proliferation.
Main Results:
- Significantly higher plasma corticosterone levels in pregnant rats compared to virgin females.
- Increased peritoneal macrophages and endogenous NO levels in pregnant rats.
- Reduced CD161 expression on NK cells in pregnant rats.
- Evidence of depressed cell immunity, including inhibited lymphocyte proliferation.
Conclusions:
- Pregnancy is associated with significant endocrine and immunologic changes, including elevated corticosterone, increased NO, and altered NK cell expression.
- These findings highlight the complex immunological paradox of maternal tolerance.
- Further research is needed to explore dietary or therapeutic modulation of these pregnancy-related immune processes.
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