Improving native human sperm freezing protection by using a modified vitrification method
نویسندگان
چکیده
منابع مشابه
Human ovarian tissue: vitrification versus conventional freezing.
Sir, In the challenging paper by Wang et al. (2008), the authors have reported about an effective method of vitrification of human ovarian tissue with direct contact of cells in liquid nitrogen, named needle immersed vitrification. Childbirth after cryopreservation of ovarian tissue is now a reality (Donnez et al., 2004; Demeestere et al., 2007; Meirow et al., 2007; Andersen et al., 2008) and t...
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In this study, we compared the effects of repeated freezing/thawing of human sperm by our in-house method of rapid freezing with slow programmable freezing. Sperm samples from 11 normozoospermic subjects were processed through density gradients and divided into three aliquots: non-frozen, rapid freezing and slow programmable freezing. Sperm in the rapid freezing group had better motility and vi...
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Embryo cryopreservation is an important aspect of assisted reproduction. Many methods have been described, but they have been poorly investigated in randomized trials, highlighting the need for a systematic review of the literature. Meticulous electronic/hand searches were performed to locate randomized trials (RCT) comparing embryo cryopreservation methods. Primary outcomes were clinical pregn...
متن کاملCryopreservation of human embryos by vitrification or slow freezing: a systematic review and meta-analysis.
OBJECTIVE To examine the literature systematically in order to identify prospective comparative trials answering the following question: Is vitrification of human embryos associated with a higher postthawing survival rate as compared with slow freezing? DESIGN Systematic review and meta-analysis. SETTING University-based hospital. PATIENT(S) Not applicable. INTERVENTION(S) Vitrification...
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In this paper Mathematica is used to solve the moving boundary problem of freezing in a finite slab for higher order perturbations. Mathematica is a new system which makes it possible to do algebra with computer. More specifically, it enables researchers to find the location of the ice at any time for as high order of perturbation as one whishes. Using of Mathematica and outer solution and an i...
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ژورنال
عنوان ژورنال: Asian Journal of Andrology
سال: 2021
ISSN: 1008-682X
DOI: 10.4103/aja.aja_29_20