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Reproductive Sciences

, Volume 18, Issue 4, pp 383–390 | Cite as

Expression of the Vasoactive Proteins AT1, AT2, and ANP by Pregnancy-Induced Mouse Uterine Natural Killer Cells

  • Kota HattaEmail author
  • Alexandra L. Carter
  • Zhilin Chen
  • Ester Leno-Durán
  • Carmen Ruiz-Ruiz
  • Enrique G. Olivares
  • M. Yat Tse
  • Stephen C. Pang
  • B. Anne Croy
Original Articles

Abstract

Angiotensin II receptor type 1 (AT1) activation leads to vasoconstriction and type 2 receptor (AT2) leads to vasodilation. Atrial natriuretic peptide (ANP) antagonizes the effects of AT1. In human and murine pregnancies, uterine natural killer (uNK) cells closely associate with decidual blood vessels. Protein localization of AT1, AT2, and ANP to mouse uNK cells was examined between gestation days (gds) 6 and 12, the interval of uNK cell expansion. Percentages of uNK cells expressing AT1 or AT2 changed between gd6 and gd10. Atrial natriuretic peptide did not localize to uNK cells at gd6 or 8, but did colocalize to uNK cells at gd10 and 12, times immediately after spiral arterial modification. This is the first report of AT1, AT2, and ANP expression in uterine immune cells. Expression of these molecules suggests that uNK cells have the potential to contribute to the changes in blood pressure that occur between days 5 and 12 of pregnancy in mice.

Keywords

angiotensin II receptors atrial natriuretic peptide mice pregnancy uterine natural killer cell 

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Copyright information

© Society for Reproductive Investigation 2011

Authors and Affiliations

  • Kota Hatta
    • 1
    • 2
    Email author
  • Alexandra L. Carter
    • 3
  • Zhilin Chen
    • 3
  • Ester Leno-Durán
    • 3
    • 4
  • Carmen Ruiz-Ruiz
    • 4
  • Enrique G. Olivares
    • 4
    • 5
  • M. Yat Tse
    • 3
  • Stephen C. Pang
    • 3
  • B. Anne Croy
    • 3
  1. 1.Division of Cardiovascular Surgery and Department of SurgeryToronto General Research Institute and University of TorontoTorontoCanada
  2. 2.Departments of Microbiology and ImmunologyQueen’s UniversityKingstonCanada
  3. 3.Anatomy and Cell BiologyQueen’s UniversityKingstonCanada
  4. 4.Unidad de Inmunología, IBIMERUniversidad de Granada, Centro de Investigación BiomédicaGranadaSpain
  5. 5.Departamento de Bioquímica y Biología Molecular III e InmunologíaUniversidad de Granada, Centro de Investigación BiomédicaGranadaSpain

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