Preprint Article Version 1 This version not peer reviewed

The Normal Human Endometrium but not Myometrium Presents Menstrual Cycle-Dependent Fluctuations in the Immunoexpression of DNA Fragmentation Factor 40, DNA Fragmentation Factor 45, and B-cell Lymphoma 2 Protein.

Version 1 : Received: 21 May 2017 / Approved: 22 May 2017 / Online: 22 May 2017 (05:44:31 CEST)

How to cite: Banas, T.; Pitynski, K.; Okon, K.; Mikos, M.; Bonior, J.; Ludwin, A. The Normal Human Endometrium but not Myometrium Presents Menstrual Cycle-Dependent Fluctuations in the Immunoexpression of DNA Fragmentation Factor 40, DNA Fragmentation Factor 45, and B-cell Lymphoma 2 Protein.. Preprints 2017, 2017050156 (doi: 10.20944/preprints201705.0156.v1). Banas, T.; Pitynski, K.; Okon, K.; Mikos, M.; Bonior, J.; Ludwin, A. The Normal Human Endometrium but not Myometrium Presents Menstrual Cycle-Dependent Fluctuations in the Immunoexpression of DNA Fragmentation Factor 40, DNA Fragmentation Factor 45, and B-cell Lymphoma 2 Protein.. Preprints 2017, 2017050156 (doi: 10.20944/preprints201705.0156.v1).

Abstract

Abstract: DNA fragmentation factors 40 and 45 (DFF40 and DFF45) and B-cell lymphoma 2 (Bcl-2) expression were evaluated in the normal human endometrium and myometrium. DFF40, DFF45, and Bcl-2 expression was assessed via immunohistochemistry in the proliferative, secretory, and atrophic endometrium and myometrium collected postmenopausally and premenopausally during the proliferative and secretory phases of the menstrual cycle. The endometrium showed significantly higher DFF40 and DFF45 expression than that in the uterine myometrium; compared to the stroma, endometrial glands showed the highest expression in pre- and postmenopausal specimens. Glandular expression of DFF45 was dependent on the menstrual cycle, reaching its highest level in the secretory endometrium. The glandular expression of DFF40 and DFF45 was significantly lower in postmenopausal specimens than that in premenopausal tissue. No cycle-dependent changes were reported for stromal or myometrial DFF40 or DFF45 expression. Compared to the endometrial stroma and myometrium, Bcl-2 showed the highest expression in the glandular proliferative endometrium and the lowest expression in the stromal secretory endometrium and myometrium during the secretory phase of the cycle. DFF45 and Bcl-2 showed menstrual cycle-dependent expression, which was limited to the glandular layer of the endometrium.

Subject Areas

DNA fragmentation factors 40, DFF40, DNA fragmentation factors 45, DFF45, b-cell lymphoma 2, bcl-2, endometrium, menstrual cycle, uterine myometrium.

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