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Natural killer cell activity in early human pregnancy
1Department of Obstetrics and Gynecology, National Naval Medical Center, Bethesda, MD 20814.
Gynecologic and Obstetric Investigation
|January 1, 1994
Summary
Natural killer (NK) cell activity remains similar in early pregnancy. These immune cells do not appear crucial in the first trimester, despite their potential role later in pregnancy.
Area of Science:
- Immunology
- Reproductive Biology
- Maternal-Fetal Medicine
Background:
- Natural killer (NK) cells are crucial immune cells involved in pregnancy.
- Their role in early pregnancy and potential impact on reproductive wastage is not fully understood.
Purpose of the Study:
- To investigate the activity and role of NK cells during the first trimester of pregnancy.
- To compare NK cell activity in pregnant women with nonpregnant controls.
Main Methods:
- Assessed NK cell activity and cytotoxicity in 41 women during their first trimester.
- Compared NK cell numbers and density in culture with nonpregnant individuals.
Main Results:
- NK cell activity was comparable between pregnant women and nonpregnant controls.
- No significant changes in circulating NK cell numbers or density were observed.
Conclusions:
- NK cells do not seem critically involved in the first trimester of pregnancy.
- Their role may be more significant in later stages of gestation, potentially influencing maternal immune status.