Is oocyte cryopreservation is as effective as embryo cryopreservation in freezing eggs as effective as freezing embryos to achievinge live births?

Theoretical considerations for oocyte cryopreservation by freezing Introduction

Attempts to cryopreserve oocytes by freezing have, to date, been based mostly on empirical approaches rather than on basic principles, and perhaps in part for this reason have not been very successful. Theoretical considerations suggest some fairly ‘heretical’ conclusions. The concentrations of permeating cryoprotectants employed in past studies have probably been inadequate, and the choice of ...

Mice Embryos Cryopreservation: Vitrification or Ultra-Rapid Freezing?

Background: The importance of mice as animal model for research has promoted the surge of many strains with important characteristics which need to be preserved. Embryo cryopreservation appears as the most suitable technique. However, until now there is not an effective methodology for this specie. This study aimed to evaluate three methods for mice embryos cryopreservation. Materials, Methods ...

Human Oocyte And Embryo Cryopreservation

The technology so far applied clinically has been based directly on traditional human embryo cryopreservation protocols, and has produced relatively few offspring. Fortunately to date, no abnormalities have been reported from these pregnancies, regardless of the persistent concerns that freezing and thawing of mature oocytes may disrupt the meiotic spindle and thus increase the potential for an...

is steroide effective as adjuvant therapy in patient with pharyngitis ?

Nebulized Budesonide Is as Effective as Nebulized Adrenaline in

Objective. Nebulized budesonide and nebulized adrenaline have been shown to be effective in the treatment of moderately severe croup. However, there has been no direct comparison of these therapies. We undertook a multicenter, randomized, double-blind, parallel group study in 66 hospitalized children with viral or spasmodic croup. Methods. Children 0.5 to 6 years of age were assessed using a va...