Follicular Fluid Exosome miRNA During Oocyte Maturation
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Oocyte Maturation. Basic parameters: 20 years — 45 years · Female.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Hong Kong
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Investigation of Follicular Fluid Exosome miRNA in Young and Aged Women During Oocyte Maturation
Overview
Folliculogenesis involves the recruitment of primordial follicles into a group of growing follicles in which eventually one follicle is selected, matured and ovulated. Complex endocrine and intra-ovarian paracrine interactions occur to create a changing intra-follicular hormonal milieu suitable for oocyte development. However, this oocyte developmental competence and to undergo fertilization and embryogenesis is impaired in aged women. Diminished ovarian function is generally attributed to decreased quantity and quality of oocytes and their surrounding granulosa cells during ovarian aging, although the underlying mechanisms remain unclear. The aim of the study is to investigate the miRNA in (follicular fluid) FF exosome in young and aged women and their relationship to egg maturation.
Detailed description
In recent decades, demographic and socioeconomic factors have resulted in marked changes in human society that include postponement of child bearing and a subsequent rise in mean age at first childbirth. Aged women have more reproductive problems (including menstrual irregulation and decreased ovarian reserve as reflected by reduced anti-mullerian hormone (AMH)) and their oocytes are often of lower quality when compared to younger women.
Folliculogenesis involves the recruitment of primordial follicles into a group of growing follicles in which eventually one follicle is selected, matured and ovulated. Complex endocrine and intra-ovarian paracrine interactions occur to create a changing intra-follicular hormonal milieu suitable for oocyte development. However, this oocyte developmental competence, defined as the ability of the oocyte to complete follicular development, and to undergo fertilization and embryogenesis is impaired in aged women. Age-related decline in female fertility is mainly driven by ovarian aging, or diminished ovarian function associated with age. Diminished ovarian function is generally attributed to decreased quantity and quality of oocytes and their surrounding granulosa cells during ovarian aging, although the underlying mechanisms remain unclear. Transcription studies have suggested indirectly that some age-related changes in oocyte gene expression and cell to cell communication may involve epigenetic machinery.
Ovarian follicle may be one of the best models in human for exosome study considering the role of the granulosa cells and follicular fluid for oocyte maturation. In the ovarian follicle, follicular fluid (FF) exosome may play an important mediated communication role between the oocyte and surrounding granulosa cells.
The aim of the study is to investigate the miRNA in (follicular fluid) FF exosome in young and aged women and their relationship to egg maturation.
Primary outcome measures
- RNA-sequencing [Time frame: through study completion, an average of 2 years]
- quantitative real-time polymerase chain reaction [Time frame: through study completion, an average of 2 years]
Secondary outcome measures (1)
- fertilization and pregnancy rate [Time frame: through study completion, an average of 2 years]
Eligibility criteria
Inclusion criteria
- Women aged 20 to 45;
- BMI > 19 \& < 35;
- Women who is planning to perform invitro fertilization (IVF) together with intracytoplasmic sperm injection (ICSI) for their fertility problems
Exclusion criteria
- Positive pregnancy test before taking study medications;
- Women with BMI>35 kg/m2;
- Women with known chromosomal translocation, recurrent abortions or those carrying Fragile X;
- Women with endometriosis
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Cohort
Study locations
Hong Kong · 1 center
- The Chinese University of Hong Kong — Hong Kong
Identifiers
NCT: NCT04382872 · 2019.137