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Changes in pulmonary transfer factor with menstrual cycle phase.

Catherine J Bacon1, Jerilynn C Prior, Raja T Abboud

  • 1Allan McGavin Sports Medicine Centre, University of British Columbia, Vancouver, BC, Canada V6T 1Z3. c.j.bacon@xtra.co.nz

Respiratory Physiology & Neurobiology
|March 16, 2005
PubMed
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Lung transfer factor for carbon monoxide (T(L(CO))) does not change during the menstrual cycle phases. Ovarian hormone levels also showed no association with T(L(CO)) fluctuations, suggesting adjustments are unnecessary.

Area of Science:

  • Pulmonary Physiology
  • Reproductive Endocrinology

Background:

  • The menstrual cycle involves significant hormonal fluctuations, particularly in estrogen and progesterone.
  • These hormonal changes may potentially influence physiological parameters such as lung function.

Purpose of the Study:

  • To investigate if lung transfer factor for carbon monoxide (T(L(CO))) varies across different menstrual phases.
  • To determine if changes in steroid hormone levels correlate with alterations in T(L(CO)).

Main Methods:

  • Measurements of T(L(CO)), T(L)/V(A), and hemoglobin were taken in 13 women across five distinct menstrual phases.
  • Hormonal levels (estradiol, progesterone) and their ratios were monitored and correlated with T(L(CO)) changes.

Main Results:

Related Experiment Videos

  • No significant differences in T(L(CO)) or adjusted values were observed between the various menstrual phases.
  • No association was found between maximal changes in estradiol, progesterone, or their ratio and concurrent changes in T(L(CO)).
  • A significant change in T(L(CO)) was noted between the first and fourth measurements chronologically, irrespective of menstrual phase.

Conclusions:

  • Menstrual cycle phase and ovarian hormone levels do not appear to significantly affect T(L(CO)).
  • Adjustment of T(L(CO)) measurements for the menstrual phase is likely not required.
  • The initial measurement in a series may be higher than subsequent ones.