Abstract
To evaluate changes in the levels of the peripheral lymphocyte subpopulation (PBLS) during the menstrual cycle in healthy women of childbearing age (HWOBA), for establishing a normal reference range. Flow cytometric analysis was performed for the assessment of the levels of PBLS during one menstrual cycle in HWOBA. Moreover, ovulation was monitored. The multivariable logistic regression models were used to evaluate the effects of age and body mass index (BMI) on PBLS. The levels of PBLS including CD3+, CD3+CD4+, CD3+CD8+, CD19+, CD16+CD56+ lymphocytes and ratio of Th1/Th2 cells, were relatively stable during the menstrual cycle. However, each increment in age (year) was proportional to a decrease (14%) in the level of CD8+ T cells and an increase (10%) in the level of CD19+ B cells (p < 0.05). Increased BMI was inversely proportional to the level of CD16+CD56+ natural killer (NK) cells. Thus, the normal reference intervals for PBLS in HWOBA were established. The levels of PBLS can be used for daily monitoring of immune status in HWOBA. Notably, age and BMI may affect PBLS level. The normal reference ranges for PBLS levels can provide a basis for the research and treatment of recurrent pregnancy loss.
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