"Trophoblast Islands of the Chorionic Connective Tissue" (TICCT): a Novel Placental Histologic Feature

Overview

Journal Placenta

Publisher Elsevier

Specialties Gynecology & Obstetrics
Physiology
Reproductive Medicine

Date 2013 Mar 5

PMID 23453248

Citations 2

Authors

J-S Hong

R Romero

J P Kusanovic

J-S Kim

J Lee

M Jin

H El Azzamy

D-C Lee

V Topping

S Ahn

S Jacques

F Qureshi

T Chaiworapongsa

S S Hassan

S J Korzeniewski

N G Than

C J Kim

Affiliations

Soon will be listed here.

Abstract

Introduction: We found isolated or clustered trophoblasts in the chorionic connective tissue of the extraplacental membranes, and defined this novel histologic feature as the "trophoblast islands of the chorionic connective tissue" (TICCT). This study was conducted to determine the clinical significance of TICCT.

Methods: Immunohistochemistry for cytokeratin-7 was performed on the chorioamniotic membranes (N = 2155) obtained from singleton pregnancies of 1199 uncomplicated term and 956 preterm deliveries. The study groups comprised 1236 African-American and 919 Hispanic women. Gestational age ranged from 24(+0) weeks to 41(+6) weeks. Multiple logistic regression analysis was performed to investigate the magnitude of association between patient characteristics and the presence of TICCT.

Results: The likelihood of TICCT was significantly associated with advancing gestational age both in term (OR: 1.29, 95% CI: 1.16-1.45, p < 0.001) and preterm deliveries (OR: 1.19, 95% CI: 1.07-1.32, p = 0.001) . Hispanic women were less likely than African-American women to have TICCT across gestation in term (OR: 0.23, 95% CI: 0.18-0.31, p < 0.001) and preterm pregnancies (OR: 0.41, 95% CI: 0.29-0.58, p < 0.001). Women with a female fetus were significantly more likely to have TICCT than women with a male fetus, in both term (OR: 1.64, 95% CI: 1.28-2.11, p < 0.001) and preterm gestations (OR: 2.04, 95% CI: 1.46-2.85, p < 0.001). TICCT was 40% less frequent in the presence of chronic placental inflammation [term (OR: 0.60, 95% CI: 0.45-0.81, p = 0.001) and preterm gestations (OR: 0.58, 95% CI: 0.40-0.84, p = 0.003)] and in parous women at term (OR: 0.60, 95% CI: 0.44-0.81, p = 0.001).

Conclusions: Our findings suggest that the duration of pregnancy, fetal sex, and parity may influence the behavior of extravillous trophoblast and placental mesenchymal cells.

Citing Articles

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Sexually dimorphic responses to early adversity: implications for affective problems and autism spectrum disorder.

Davis E, Pfaff D Psychoneuroendocrinology. 2014; 49:11-25.

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