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Related Experiment Videos

Eosinophils in human cervical ripening

U B Knudsen1, N Uldbjerg, T Rechberger

  • 1Department of Obstetrics and Gynaecology, Aarhus University Hospital, Skejby Sygehus, Denmark.

European Journal of Obstetrics, Gynecology, and Reproductive Biology
|April 1, 1997
PubMed
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Eosinophils, a type of white blood cell, are present in the cervix during labor. These cells appear to play a role in cervical ripening, particularly after labor has begun.

Area of Science:

  • Reproductive biology
  • Immunology
  • Obstetrics

Background:

  • Cervical ripening shares characteristics with inflammatory processes.
  • Eosinophil granulocytes are known mediators of inflammation.

Purpose of the Study:

  • To investigate the presence and role of eosinophils in the human cervix during various physiological states.
  • To determine if eosinophils are involved in cervical ripening at term.

Main Methods:

  • Cervical biopsies were collected from non-pregnant women, women in early pregnancy, and women at term undergoing spontaneous vaginal delivery, induced vaginal delivery (Prostaglandin E2), or planned Cesarean section.
  • Immunohistochemical staining was used to identify and quantify eosinophil granulocytes (ECP, EG2).
  • Biopsies were analyzed in a blinded manner.

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Main Results:

  • Eosinophils exhibiting degranulation were detected in all cervical specimens from women who delivered vaginally.
  • Minimal or no eosinophils were observed in biopsies from non-pregnant women, women in early pregnancy, or those undergoing planned Cesarean section.
  • Pretreatment with Prostaglandin E2 did not influence the presence or degranulation of eosinophils.

Conclusions:

  • Eosinophils are present in the cervix at term and appear to be involved in the process of cervical ripening.
  • The presence of eosinophils seems to be primarily associated with the onset of labor rather than pregnancy itself.