Abstract

Back ground: Menstruation is characterized by monthly rhythmical changes in the rates of secretion of the female sex hormones and corresponding physical changes in the ovaries and other sexual organs. There are three phases of menstrual cycle namely, menstrualphase, proliferative phase, andsecretary phase.There occurfluctuations inthelevels ofsexsteroid hormones across different phases of menstrual cycle. Aims and objectives: This study was carried out to evaluate the immune response of healthy female students of first–year MBBS (n = 40) in the age group of 18–25 years with regular menstrual cycle.
Materials and Methods: The parameters analyzed were total leukocyte count (TLC); absolute eosinophil count (AEC); and differential leukocyte count (DLC) of neutrophils, lymphocytes, monocytes, eosinophil, and basophils. The data collected were statistically analyzed. Result: There was significant increase in TLC during menstrual and secretary phase of menstrual cycle. No significant difference was observed in AEC during different phases of menstrual cycle. In DLC, there was a significant increase in the neutrophil percentage during secretary phase. Lymphocyte count increased during proliferative and secretary phase but it is not statistically significant. No significant difference was observed in monocyte and eosinophil count. Conclusion: This study shows normal variation in the leucocyte count during different phases of menstrual cycle that may help in understanding various disorders.