Journal
ARCHIVUM IMMUNOLOGIAE ET THERAPIAE EXPERIMENTALIS
Volume 67, Issue 5, Pages 295-309Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00005-019-00552-7
Keywords
Macrophage; Human pregnancy; Decidualization; Polarity; VEGF; Preeclampsia
Categories
Funding
- NICHD [R01HD088549]
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Macrophages (MCYRILLIC CAPITAL LETTER EFs) are the leukocytes produced from differentiation of monocytes and are located in almost all tissues of human body. They are involved in various processes, such as phagocytosis, innate and adaptive immunity, proinflammatory (M1) and anti-inflammatory (M2) activity, depending on the tissue microenvironment. They play a crucial role in pregnancy, and their dysfunction or alteration of polarity is involved in pregnancy disorders, like preeclampsia, recurrent spontaneous abortion, infertility, intrauterine growth restriction, and preterm labor. About 50-60% of decidual leukocytes are natural killer (NK) cells followed by MCYRILLIC CAPITAL LETTER EFs (the second largest population). MCYRILLIC CAPITAL LETTER EFs are actively involved in trophoblast invasion, tissue and vascular remodeling during early pregnancy, besides their role as major antigen-presenting cells in the decidua. These cells have different phenotypes and polarities in different stages of pregnancy. They have also been observed to enhance tumor growth by their anti-inflammatory activity (M2 type) and prevent immunogenic rejection. Targeted alteration of polarity (M1-M2 or vice versa) could be a major focus in the future treatment of pregnancy complications. This review is focused on the role of MCYRILLIC CAPITAL LETTER EFs in pregnancy, their involvement in pregnancy disorders, and decidual MCYRILLIC CAPITAL LETTER EFs as possible therapeutic targets for the treatment of pregnancy complications.
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