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Chronic villitis of unknown etiology and massive chronic intervillositis have similar immune cell composition.

Abstract：

INTRODUCTION:Chronic villitis of unknown etiology (CVUE) and massive chronic intervillositis (MCI) are placental lesions associated with infiltration of mononuclear cells in the chorionic villi and the intervillous spaces, respectively. It is not well known whether immune cells in CVUE and MCI have similar phenotypic characteristics. METHODS:A cross-sectional study of third trimester placentas was conducted to identify immune cell subpopulations in CVUE and MCI (n = 17/group). CVUE was diagnosed with H&E staining and antibody to CD3 in serial sections; and MCI, by the presence of massive infiltration of mononuclear cells in the intervillous spaces. Immune cells, ICAM-1 expression and nuclear factor κB (NF-κB) activation were determined immunohistochemically. RESULTS:CVUE and MCI showed similar infiltrates, mainly CD68+ and CD3+ cells. Most cells (>80%) were CD45RB+, and one third were CD45RO+ in both lesions. There were slightly more CD8+ than CD4+ cells in both CVUE and MCI. More than 90% of cells in CVUE and MCI were ICAM-1+ with NFκB nuclear localization. Syncytiotrophoblast ICAM-1 expression was significantly (p < 0.001) higher in MCI (mean of 81.0; range of 71.6-86.0) than in CVUE (52.4; 36.4-59.4) or normal placentas (0.2; 0.0-0.6). Both, failure of physiologic transformation of spiral arteries and placental atherosclerosis-like lesions of atherosis were significantly more frequent in MCI than in CVUE or normal placentas (p = 0.044 and p = 0.007, respectively). DISCUSSION:These finding suggest that MCI and CVUE have very similar infiltration of immune cells although MCI has more severe placental lesions.

journal_name

Placenta

journal_title

Placenta

authors

Labarrere CA,Hardin JW,Haas DM,Kassab GS

doi

10.1016/j.placenta.2015.03.008

subject

Has Abstract

pub_date

2015-06-01 00:00:00

pages

681-6

issue

6

eissn

0143-4004

issn

1532-3102

pii

S0143-4004(15)00865-6

journal_volume

36

pub_type

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