Toll-Like Receptor-2 and-4 Expression by Maternal Neutrophils in Preterm Labor
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Data
2018-01-01
Autores
Moco, Natalia Prearo [UNESP]
Camargo Batista, Renata Aparecida [UNESP]
Martin, Laura Fernandes [UNESP]
Oliveira, Leandro Gustavo de [UNESP]
Garcia de Lima Parada, Cristina Maria [UNESP]
Dias-Melicio, Luciane Alarcao [UNESP]
Golim, Marjorie de Assis [UNESP]
Silva, Marcia Guimaraes da [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Karger
Resumo
Background and Aims: The inflammatory response in preterm parturition is regulated by the innate immune system. Toll-like receptors (TLR)-2 and TLR-4 are innate immune receptors that recognize the microorganisms most frequently involved in amniotic cavity infections, which are associated with activating the inflammatory response at the maternal-fetal interface during preterm labor. This study aimed to evaluate the expression of TLR-2 and TLR-4 in maternal neutrophils in preterm labor. Methods: A cross-sectional study was conducted in the Obstetrics Care Unit of Botucatu Medical School, UNESP, Brazil. The preterm group was composed of 20 pregnant women who presented preterm labor and preterm delivery. The control group was composed of 20 nonlaboring pregnant women matched to the preterm group by gestational age. Neutrophils were isolated from peripheral blood and TLR expressions were performed by real-time polymerase chain reaction and flow cytometry. Results: Gene expressions of TLR-2 and TLR-4 in neutrophils from the preterm group were statistically higher than expressions in neutrophils from the matched control group. The percentage of TLR-4(+) neutrophils was higher in the preterm group than the matched control group, while the percentage of TLR-2(+) neutrophils did not differ between groups. Conclusion: TLR-4 expression in maternal neutrophils is associated with spontaneous preterm labor. (C) 2017 S. Karger AG, Basel
Descrição
Palavras-chave
Pregnancy, Preterm delivery, Innate immunity, Neutrophils, Toll-like receptors
Como citar
Gynecologic And Obstetric Investigation. Basel: Karger, v. 83, n. 1, p. 1-8, 2018.