NCT03734120

Cryogenic Preservation of Spermatozoa

Cryogenic Preservation of Spermatozoa : Comparative Study Between Both Dry and Liquid Phase Nitrogen Storages

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 52 (actual)
• Sponsor: University Hospital, Clermont-Ferrand · Academic / Other
• Sex: Male
• Age: 18 Years – 60 Years
• Healthy volunteers: Accepted

Summary

The reference technique for the conservation of gametes is storage in liquid nitrogen but new vats of nitrogen vapor (storage over liquid nitrogen) or in dry phase (storage in an insulated compartment of liquid nitrogen in a tank Liquid nitrogen) also allow the storage of flakes. The purpose of this work is to evaluate the dry-phase cryopreservation technique of liquid nitrogen compared with liquid-phase storage, depending on the duration of cryopreservation.

Detailed description

Objective: To evaluate the effects of cryopreserved sperm in dry and liquid phase nitrogen at 3 and 6 month on sperm numeration, motility, vitality, morphology, acrosomal integrity and DNA fragmentation. Design: Experimental study, investigator was blinded to the type of Cryopreservation. Patient(s): Semen samples were collected from patients who came in laboratory for semen analysis Intervention: Samples were frozen with a programmable freezing unit. Each semen sample was divided into two aliquots. One aliquot was plunged into liquid nitrogen and the other was stored in dry-phase nitrogen for 3 or 6 month. Thawing was performed at room temperature.

Conditions

• Fertility
• Spermatic Parameters

Interventions

Type	Name	Description
OTHER	cryopreservation	Samples were frozen with a programmable freezing unit. Each semen sample was divided into two aliquots. One aliquot was plunged into liquid nitrogen and the other was stored in dry-phase nitrogen for 3 or 6 month. Thawing was performed at room temperature

Timeline

• Start date: 2012-06-01
• Primary completion: 2012-08-01
• Completion: 2013-08-01
• First posted: 2018-11-07
• Last updated: 2018-11-07

Locations

1 site across 1 country: France