OBJECTIVE: The purpose of this study was to compare the chemotactic activity of the choriodecidua and amnion, and to identify the phenotype of the leukocytes chemoattracted by each tissue. STUDY DESIGN: Amnion, choriodecidua and whole fetal membranes extracts were obtained from women at term (>37 weeks of gestation) with or without labor (n = 5 each). Extracts were assayed for leukocyte chemotactic activity, and the number and phenotype of the chemoattracted leukocytes were characterized by flow cytometry. RESULTS: Although all of the extracts exhibited chemotactic activity, more leukocytes were chemoattracted by the choriodecidua and the whole fetal membranes during labor compared with no labor (P = .010, .008). During labor the choriodecidua is responsible for granulocyte, T-lymphocyte, monocyte, and natural killer-cell chemoattraction, and the amnion is responsible for B-lymphocyte chemoattraction. CONCLUSION: Choriodecidua and amnion exhibit chemotactic activity for selective leukocytes and thus, each fetal membrane differentially regulates leukocyte chemotactic activity during labor.
OBJECTIVE: The purpose of this study was to compare the chemotactic activity of the choriodecidua and amnion, and to identify the phenotype of the leukocytes chemoattracted by each tissue. STUDY DESIGN: Amnion, choriodecidua and whole fetal membranes extracts were obtained from women at term (>37 weeks of gestation) with or without labor (n = 5 each). Extracts were assayed for leukocyte chemotactic activity, and the number and phenotype of the chemoattracted leukocytes were characterized by flow cytometry. RESULTS: Although all of the extracts exhibited chemotactic activity, more leukocytes were chemoattracted by the choriodecidua and the whole fetal membranes during labor compared with no labor (P = .010, .008). During labor the choriodecidua is responsible for granulocyte, T-lymphocyte, monocyte, and natural killer-cell chemoattraction, and the amnion is responsible for B-lymphocyte chemoattraction. CONCLUSION: Choriodecidua and amnion exhibit chemotactic activity for selective leukocytes and thus, each fetal membrane differentially regulates leukocyte chemotactic activity during labor.
Authors: D Levenson; R Romero; V Garcia-Flores; D Miller; Y Xu; A Sahi; S S Hassan; N Gomez-Lopez Journal: Clin Exp Immunol Date: 2020-05-07 Impact factor: 4.330
Authors: Felipe Vadillo-Ortega; Alvaro Osornio-Vargas; Miatta A Buxton; Brisa N Sánchez; Leonora Rojas-Bracho; Martin Viveros-Alcaráz; Marisol Castillo-Castrejón; Jorge Beltrán-Montoya; Daniel G Brown; Marie S O'Neill Journal: Med Hypotheses Date: 2013-12-11 Impact factor: 1.538