Prostaglandin dehydrogenase mRNA in baboon intrauterine tissues in late gestation and spontaneous labor

W. X. Wu, X. H. Ma, G. C.S. Smith, C. A. Mecenas, S. V. Koenen, P. W. Nathanielsz

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The present study was designed to characterize prostaglandin dehydrogenase (PGDH) mRNA expression in critical intrauterine tissues of pregnant baboons in late gestation and at spontaneous labor. In addition, we determined regulatory effects of betamethasone in vivo on chorionic and placental PGDH mRNA expression. PGDH mRNA was present in chorion, decidua, lower uterine segment, fundal myometrium, and cervix in late gestation but undetectable in amnion. PGDH mRNA significantly decreased in decidua and cervix during late gestation and in chorion and fundus during spontaneous labor. PGDH mRNA in lower uterine segment, decidua, cervix, and placenta was unchanged during spontaneous labor from late gestation levels. Betamethasone had no effect on chorionic and placental PGDH mRNA expression. In summary, our data suggest that PGDH mRNA expression is tightly controlled in gestation- and tissue-specific manners. Decreased chorionic and fundal PGDH abundance during labor and decreased decidua and cervical PGDH mRNA in late gestation allow local uterine prostaglandin accumulation and assist prostaglandin transfer to myometrium. Local differences in PGDH function may regulate tissue- and region-specific requirements for prostaglandins to promote and complete labor.

Original languageEnglish (US)
Pages (from-to)R1082-R1090
JournalAmerican Journal of Physiology - Regulatory Integrative and Comparative Physiology
Volume279
Issue number3 48-3
DOIs
StatePublished - 2000
Externally publishedYes

Keywords

  • Cervix
  • Chorion
  • Myometrium
  • Parturition
  • Placenta

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

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