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Low levels of anti-secretory factor in placenta are associated with preterm birth and inflammation.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Acta Obstetricia et Gynecologica Scandinavica, ISSN 0001-6349, E-ISSN 1600-0412, Vol. 97, nr 3, s. 349-356Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

INTRODUCTION: Anti-secretory factor is a protein that regulates secretory and inflammatory processes and preterm birth is associated with inflammation. Therefore, our hypothesis was that anti-secretory factor might play a role in immune reactivity and homeostasis during pregnancy.

MATERIAL AND METHODS: Following spontaneous onset of labor and preterm or term delivery, placenta biopsies were collected. The levels of anti-secretory factor and markers of inflammation (CD68, CD163) and vascularization (CD34, smooth muscle actin) were analyzed by immunohistochemistry.

RESULTS: The 61 placental biopsies included 31 preterm (<37 weeks of gestation) and 30 term (37-41 weeks) samples. The preterm placentas exhibited lower levels of anti-secretory factor (p = 0.008) and larger numbers of CD68-positive cells (p < 0.001) compared to term. Preterm placentas had blood vessel of smaller diameter (p = 0.036) indicative of immaturity. The level of interleukin-6 in cord blood was higher after very preterm than term birth, suggesting a fetal inflammatory response. The placenta level of anti-secretory factor was positively correlated to the length of gestation (p = 0.025) and negatively correlated to the levels of the inflammatory markers CD68 (p = 0.015) and CD163 (p = 0.028).

CONCLUSIONS: Preterm delivery is associated with low levels of anti-secretory factor in placenta. Inflammation, a potential trigger of preterm birth, is more pronounced in the preterm placenta and inversely related to the placental level of anti-secretory factor, suggesting both a link and a potential target for intervention.

sted, utgiver, år, opplag, sider
2018. Vol. 97, nr 3, s. 349-356
Emneord [en]
Anti-secretory factor, inflammation, placenta, preterm birth, vascularization
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-357814DOI: 10.1111/aogs.13282PubMedID: 29265188OAI: oai:DiVA.org:uu-357814DiVA, id: diva2:1240490
Tilgjengelig fra: 2018-08-21 Laget: 2018-08-21 Sist oppdatert: 2018-11-28bibliografisk kontrollert

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