D Radović Janošević1,2, M Trandafilović3, D Krtinić4,5, H Čolović6,7, J Milošević Stevanović8,9, S Pop-Trajković Dinić8,9. 1. Department of Gynecology and Obstetrics, Faculty of Medicine, University of Niš, Serbia, Blvd. Dr Zoran Djindjic 81, 18000 Niš, Serbia. dragana.radovic.janosevic@medfak.ni.ac.rs. 2. Gynecology and Obstetrics Clinic, Clinical Center Niš, Serbia, Blvd. Dr Zoran Djindjić 48, 18000 Niš, Serbia. dragana.radovic.janosevic@medfak.ni.ac.rs. 3. Department of Anatomy, Faculty of Medicine, University of Niš, Serbia, Blvd. Dr Zoran Djindjić 81, 18000 Niš, Serbia. 4. Department of Pharmacology with Toxicology, Faculty of Medicine, University of Niš, Serbia, Blvd. Dr Zoran Djindjić 81, 18000 Niš, Serbia. 5. Oncology Clinic, Clinical Center Niš, Serbia, Blvd. Dr Zoran Djindjić 48, 18000 Niš, Serbia. 6. Department of Physical Medicine and Rehabilitation, Faculty of Medicine, University of Niš, Serbia, Blvd. Dr Zoran Djindjić 81, 18000 Niš, Serbia. 7. Physical Medicine and Rehabilitation Clinic, Clinical Center Niš, Serbia, Blvd. Dr Zoran Djindjić 48, 18000 Niš, Serbia. 8. Department of Gynecology and Obstetrics, Faculty of Medicine, University of Niš, Serbia, Blvd. Dr Zoran Djindjic 81, 18000 Niš, Serbia. 9. Gynecology and Obstetrics Clinic, Clinical Center Niš, Serbia, Blvd. Dr Zoran Djindjić 48, 18000 Niš, Serbia.
Abstract
BACKGROUND: Menstruation was presented as a result of inflammatory process. The total and relative numbers of the endometrial immunocompetitive cells vary during the different phases of the menstrual cycle. The aim of this morphological study is to make a contribution to understanding different distribution of leukocyte types during proliferative and secretory phase of normal menstrual cycle. MATERIALS AND METHODS: The study included 40 women (20 in proliferative and 20 in secretory phase of the menstrual cycle). Exploratory curettage performed as preoperative preparation due to uterine myomas. Immunophenotyping was performed by immunoalkaline phosphatase (APAAP) using monoclonal antibodies: CD15, CD20, CD30, CD45RO, CD56, CD57 and CD68. The results were statistically analysed using SPSS 20.0 software. RESULTS: Natural killer (NK) cells are dominant during secretory, and CD45RO T lymphocytes are dominant during proliferative phase of the menstrual cycle. During the secretory phase of menstrual cycle, leukocytes make 30% of total endometrial cells. NK cells (CD56+ bright subpopulation), activated T lymphocytes, macrophages and B lymphocytes significantly increase in their number during the secretory phase of menstrual cycle. CONCLUSIONS: Significant changes in endometrial leukocyte populations during proliferative and secretory phase of the menstrual cycle are emphasized. Changes in dominance of different leukocyte subpopulations are determined by hormonal and microenvironmental changes in modulatory factors that have not yet been fully explained.
BACKGROUND: Menstruation was presented as a result of inflammatory process. The total and relative numbers of the endometrial immunocompetitive cells vary during the different phases of the menstrual cycle. The aim of this morphological study is to make a contribution to understanding different distribution of leukocyte types during proliferative and secretory phase of normal menstrual cycle. MATERIALS AND METHODS: The study included 40 women (20 in proliferative and 20 in secretory phase of the menstrual cycle). Exploratory curettage performed as preoperative preparation due to uterine myomas. Immunophenotyping was performed by immunoalkaline phosphatase (APAAP) using monoclonal antibodies: CD15, CD20, CD30, CD45RO, CD56, CD57 and CD68. The results were statistically analysed using SPSS 20.0 software. RESULTS: Natural killer (NK) cells are dominant during secretory, and CD45RO T lymphocytes are dominant during proliferative phase of the menstrual cycle. During the secretory phase of menstrual cycle, leukocytes make 30% of total endometrial cells. NK cells (CD56+ bright subpopulation), activated T lymphocytes, macrophages and B lymphocytes significantly increase in their number during the secretory phase of menstrual cycle. CONCLUSIONS: Significant changes in endometrial leukocyte populations during proliferative and secretory phase of the menstrual cycle are emphasized. Changes in dominance of different leukocyte subpopulations are determined by hormonal and microenvironmental changes in modulatory factors that have not yet been fully explained.
Entities:
Keywords:
NK cells; endometrium; immune cells; leukocyte; menstrual cycle