title: Fallopian tube ciliary beat frequency in relation to the stage of menstrual cycle and anatomical site.
abstract: BACKGROUND
  The cyclical changes in ciliary structure and motion within the human Fallopian tube are well documented. Previous investigators have studied ciliary beat frequency (CBF) in relation to menstrual cycle and anatomical site, but with conflicting results.
  
  
  METHODS
  Using a technique that records variations in light intensity, we have studied the changes in CBF in relation to the menstrual cycle and anatomical site. Fallopian tubes were collected from 26 women who underwent hysterectomy for benign conditions. Menstrual history, hormone profile and endometrial biopsy results were used to determine the stage of the cycle. Fourteen women were in the proliferative phase, and 12 women in the secretory phase.
  
  
  RESULTS
  Mean CBF for all subjects was 5.3 plus minus 0.2 Hz. There was no significant difference in CBF in relation to anatomical site. In the fimbrial region the ciliary beat was faster in the secretory (5.8 plus minus 0.3 Hz) as compared with the proliferative phase (4.9 plus minus 0.2 Hz), P < 0.02.
  
  
  CONCLUSIONS
  It is possible that this increase in fimbrial CBF may contribute to ovum retrieval and transport after ovulation. However, the reproductive significance of the changes in CBF in relation to the menstrual cycle needs further investigation.
authors.affiliation: Academic Department of Obstetrics and Gynaecology, St Bartholomew's and The Royal London Hospital School of Medicine and Dentistry, Whitechapel, London E1 1BB, UK.
authors.forename: R A
authors.initials: RA
authors.lastname: Lyons
authors.forename: O
authors.initials: O
authors.lastname: Djahanbakhch
authors.forename: T
authors.initials: T
authors.lastname: Mahmood
authors.forename: E
authors.initials: E
authors.lastname: Saridogan
authors.forename: S
authors.initials: S
authors.lastname: Sattar
authors.forename: M T
authors.initials: MT
authors.lastname: Sheaff
authors.forename: A A
authors.initials: AA
authors.lastname: Naftalin
authors.forename: R
authors.initials: R
authors.lastname: Chenoy
mesh_terms: D002923:Cilia / Q000502:physiology; D005187:Fallopian Tubes / Q000502:physiology*; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D008597:Menstrual Cycle / Q000502:physiology*