Diminuição da expressão do miRNA 135 na fase secretora do ciclo menstrual em pacientes com endometriose
Endometrial miR135a and miR135b expression is similar between eutopic and ectopic tissues but decreases during the secretory phase compared to the proliferative phase in endometriosis patients.
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This thesis studied expression of microRNA-135a and microRNA-135b (miR135a/miR135b) in paired endometrium from women with endometriosis, comparing eutopic (topical) endometrium with ectopic endometrial tissue from the same individuals and assessing how expression varied across menstrual cycle phases. Endometrial biopsies and excised endometriosis lesions were collected from 31 surgical patients (March 2013–May 2014), with 8 excluded due to very low mRNA levels; miR135a/miR135b were measured by poly(A) RT-PCR and relative expression normalized to U6, then analyzed with Mann–Whitney tests. The study found no difference in miR135a/miR135b expression between ectopic and eutopic endometrium, but miR135a/miR135b expression was lower in the secretory phase than in the proliferative phase. The paper relates to endometriosis by directly analyzing miR135a/miR135b expression in eutopic versus ectopic endometrium from endometriosis patients and discussing connections to HOXA10 and endometrial receptivity; thus, this paper is centrally about endometriosis — it focuses on how miR135 expression changes in endometriosis across menstrual phases.
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