نتایج جستجو برای: cryopreservation

تعداد نتایج: 7939  

Journal: :Fertility and sterility 2014

Ovarian tissue cryopreservation is an option to preserve reproductive potential in patients who must urgently undergo aggressive chemotherapy and/or radiotherapy or who have other medical conditions requiring treatment that may threaten ovarian function and subsequent fertility. Ovarian tissue cryopreservation may be the only option available to prepubertal girls undergoing such treatments. How...

Journal: :Reproductive biology 2010
Muhammad S Ansari Bushra A Rakha Syed M H Andrabi Shamim Akhter

This experiment was designed to compare powdered egg yolk with fresh egg yolk in an extender for cryopreservation of Zebu bull semen. Sperm motility, plasma membrane integrity and viability were assessed at different stages of cryopreservation (post-dilution, pre-freezing and post-thawing). Sperm plasma membrane integrity remained similar at all the stages of cryopreservation. Sperm motility an...

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 2013
Tereza D'ávila de Freitas Aguiar Maria Fátima da Silva Teixeira Edmara Chaves Costa Allan Bezerra Vitaliano Carlos Henrique de Andrade Teles Igor Ciríaco Barroso Ronaldo Pereira Dias Nélio Batista de Moraes

INTRODUCTION The cryopreservation of rabies virus has been described in detail in the literature. To date, little information is available on the use of cryoprotective agents for cold preservation of this virus, and the available data focus only on short-term virus preservation. In this study, we investigated the medium-term cryopreservation of samples of rabies virus using different cryopreser...

2013
Marta F. Riesco Vanesa Robles

Cryopreservation is an important tool routinely employed in Assisted Reproduction Technologies (ARTs) and germplasm banking. For several years, the assessment of global DNA fragmentation seemed to be enough to ensure the integrity of genetic material. However, cryopreservation can produce molecular alterations in key genes and transcripts undetectable by traditional assays, such modifications c...

2015
Karthikeyan Subbarayan Hardy Rolletschek Angelika Senula Kamatchi Ulagappan Mohammad-Reza Hajirezaei E.R. Joachim Keller

BACKGROUND Garlic has lost its ability to form seeds in the course of its domestication. Therefore, the germplasm storage via cryopreservation is increasingly applied. The progression of the various steps within the cryopreservation procedure is accompanied by declining survival rates of the explants. Much of the recent work on cryo-stress has been focussed on osmotic and cold stress components...

Journal: :BioTechniques 2008

Journal: :Journal of gynecologic oncology 2008
Hye Jin Chang Chang Suk Suh

The preservation of fertility in female cancer survivors has become an important health issue. The different cryopreservation options available for fertility preservation are embryo, oocyte, and ovarian tissue cryopreservation. Oocyte cryopreservation is available for women without partners, but there is a limited experience with this technique and the pregnancy rate is still low. In spite of r...

2016
Sang-Ho Cha

Adult mesenchymal stem cells (MSCs) have been investigated using preclinical approaches for tissue regeneration. Porcine MSCs (pMSCs) are capable of growing and attaching to plastic with a fibroblast-like morphology and then differentiating into bone, adipose, and cartilage tissues in vitro. This study was conducted to investigate the proliferating abilities, differentiation potentials, and mul...

Journal: :journal of advanced medical sciences and applied technologies 0
hany sabry ahmed ibrahim international islamic centre for population studies and researches, al azhar university, cairo, egypt. sayed bakry ahmad rashad elshahed ahmed rammah

objectives: freezing and in vitro culture of testicular spermatozoa or tissue are reliable approaches for the management of azoospermic patients and could all for the possibility of multiple ivf-icsi procedures. however, the effect of cryopreservation duration on pregnancy outcome had been not fully examined. to analyze pregnancy outcome in patients underwent icsi procedure in relation to durat...

Journal: :Indian journal of experimental biology 2005
Augustine T Peter Ben Colenbrander Barend M Gadella

The present study was designed to test the hypothesis that addition of anticaspase cocktails (inhibiting caspases and thus blocking apoptosis) to the extenders increases the post-thaw viability of equine spermatozoa. The addition of caspase inhibitors failed to improve the acrosome and plasma membrane integrity of spermatozoa, suggesting that in equine sperm cryopreservation protocols, the addi...

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