Extracellular Vesicles From Follicular Fluid in Infertile Women: Size, Morphology and miRNA Content Analysis

Abstract

The declining birth rates and fertility challenges in Europe have intensified global concerns over rising infertility, particularly among women. This study decisively investigates follicular fluid-related extracellular vesicles (FF-EVs) from infertile patients with polycystic ovary syndrome (PCOS) or diminished ovarian reserve (DOR) undergoing in vitro fertilization (IVF), comparing them to a healthy control group. We have identified significant variations in protein content and polydispersity in crude follicular fluid using UV-Vis absorption and dynamic light scattering (DLS) techniques. Furthermore, the morphology of the extracellular vesicles (EVs) and the patterns of non-coding RNA content, including miRNAs, reveal distinct differences in infertile patients. These findings offer critical insights into the molecular signatures associated with these conditions. This study plays a vital role in advancing reproductive healthcare by pinpointing potential targets that can enhance diagnosis and deepen our understanding of ovarian disorders.