Increased production of tumor necrosis factor-α TNF-α by IUGR human placentae

Gershon Holcberg, Mahmoud Huleihel, Olga Sapir, Miriam Katz, Marina Tsadkin, Boris Furman, Moshe Mazor, Leslie Myatt

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

Objective: To evaluate the effect of pathological placental conditions such as intrauterine growth restriction (IUGR) or exposure to angiotensin II (AII) on TNF-α secretion in the vasculature of isolated human placental cotyledons. Study design: Isolated placental cotyledons from 10 normal and four intrauterine growth restricted fetuses were dually perfused. Perfusate samples from the fetal circulation were collected every 30 min during 120 min. TNF-α levels in the fetal-placental perfusate were evaluated using specific commercial ELISA kits. In three additional normal placentae, bolus injections of angiotensin II (10 -9 -10 -4 mol/l) were given into the fetal-placental circulation and perfusate samples were collected. Statistical significance of difference TNF-α levels between different conditions was determined by analysis of variance (ANOVA) and paired t-test. Results: TNF-α levels were significantly higher in the perfusate of IUGR placentae as compared with normal placentae after 120 min of perfusion (mean 410±121 vs. 39±14 pg/ml, P = 0.005). There was a significant dose-dependent increase in TNF-α levels in the placental perfusate after a bolus injection of AII 66 pg/ml with AII 10 -9 mol/l vs. 97 pg/ml with AII 10 -5 mol/l (P = 0.004), respectively. Conclusions: Placental pathology related to condition IUGR might induce the secretion of proinflammatory cytokines such as TNF-α, which may enhance the vasoconstriction of the fetal placental vascular bed.

Original languageEnglish (US)
Pages (from-to)69-72
Number of pages4
JournalEuropean Journal of Obstetrics and Gynecology and Reproductive Biology
Volume94
Issue number1
DOIs
StatePublished - Jan 1 2001

Keywords

  • Angiotensin II
  • IUGR
  • Inflammatory cytokines
  • Placenta
  • Tumor necrosis factor

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynecology

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