Identification and Standardization of a Method That Would Allow the Study of the Metabolic Profile of Blastocoele Lays the Foundation to Assess Blastocyst Metabolomic Profile and Its Relation With Embryo Morphology and Embryo Implantation
Recruitment status was Recruiting
|Study Design:||Observational Model: Case-Only
Time Perspective: Retrospective
|Official Title:||Identification and Standardization of a Method That Would Allow the Study of the Metabolic Profile of Blastocoele Lays the Foundation to Assess Blastocyst Metabolomic Profile and Its Relation With Embryo Morphology and Embryo Implantation|
- standardize the method of aspiration [ Time Frame: 2 months ] [ Designated as safety issue: Yes ]
The method for blastocyst micropuncturing and aspiration of blastocoel fluid is according also to the last literature about blastocyst vitrification. In brief, expanded day 5 blastocysts were removed from culture and transferred to a 30 nl droplet of pre-warmed Hepes buffer.
An injection pipette was introduced avoiding contaminations through the trophectoderm, and blastocoel fluid was aspirated until the blastocyst had fully collapsed around the pipette. The retrieved fluids were expelled into new purified water drops and frozen at −80°C alongside 0.5 nl control droplets of purified water.
- metabolite detection [ Time Frame: 6 months ] [ Designated as safety issue: Yes ]metabolite detection through rapid resolution reversed phase (RR-RP) high performance liquid chromatography (HPLC)-mass spectrometry (MS). From sample volumes as low as 0.5 nl we could detect and quantify against external standards a group of metabolites, whose roles in blastocyst development and embryo metabolism have long been postulated. The list included i) ATP adenosine triphosphate ; ii) glucose-6-phosphate; iii) lactate; iv) NAD+ nicotinamide-adenine dinucleotide+ and v) NADH and vi) NADPH nicotinamide-adenine dinucleotide phosphate; vii) 6-phosphogluconic acid; viii) glutamic acid and ix) α-ketoglutarate.
- analysis of the correlation between blastocyst morphology and metabolic profile in the blastocoele fluid [ Time Frame: 1 year ] [ Designated as safety issue: Yes ]blastocyst classify according to morphological criteria in the book "Atlas of Human Blastocyst" by L. Veeck and associate, to each morphological class a characteristic metabolic profile, in order to scientifically validate the observational and objective criteria up to now used in our lab
Biospecimen Retention: Samples With DNA
|Study Start Date:||September 2011|
|Estimated Study Completion Date:||December 2015|
|Estimated Primary Completion Date:||January 2014 (Final data collection date for primary outcome measure)|
Only patients who achieved hyperstimulation pathology after external administration of gonadotrophin during IVF treatment
Please refer to this study by its ClinicalTrials.gov identifier: NCT01427413
|Contact: Simone Palini, biology||+39 339 email@example.com|
|Contact: Silvia De Stefani, Biotecnology||+39 320 firstname.lastname@example.org|
|Cattolica, Rimini, Italy, 47841|
|Contact: Silvia De Stefani, Biotecnology +39 320 1111937 email@example.com|
|Contact: Simone Palini, biology +39 339 4572101 firstname.lastname@example.org|
|Study Director:||Simone Palini, biology||Cervesi Hospital, Cattolica, Italy|