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How should the clinical efficiency of oocyte cryopreservation be measured?
Abstract Clinical application of oocyte cryopreservation may be in the context of fertility preservation for women about to undergo cytotoxic therapies or may be as an alternative to embryo cryopreservation in routine assisted reproduction. The clinical efficiency of oocyte cryopreservation will be...
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Published in: | Reproductive biomedicine online 2007, Vol.14 (4), p.430-435 |
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creator | Edgar, David H Gook, Debra A |
description | Abstract Clinical application of oocyte cryopreservation may be in the context of fertility preservation for women about to undergo cytotoxic therapies or may be as an alternative to embryo cryopreservation in routine assisted reproduction. The clinical efficiency of oocyte cryopreservation will be a consequence of the cumulative impact of pre-freeze oocyte quality, post-thaw survival and subcellular effects of cryopreservation protocols, which impact on early embryo quality and post-transfer viability, together with the degree of selection which is applied to the available biological material. Any valid assessment must include reference to all the above aspects, particularly when comparing cryopreserved oocytes with non-frozen controls or cryopreserved embryos. Cumulative pregnancy rates from oocyte collections may provide the most relevant index of success. Survival of human oocytes cryopreserved using current methodology is similar to that achieved with early-cleavage-stage embryos. Although evidence suggests that developmental potential may be compromised when current oocyte cryopreservation protocols are applied, there is a paucity of rigorously controlled studies in the literature. |
doi_str_mv | 10.1016/S1472-6483(10)60889-9 |
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The clinical efficiency of oocyte cryopreservation will be a consequence of the cumulative impact of pre-freeze oocyte quality, post-thaw survival and subcellular effects of cryopreservation protocols, which impact on early embryo quality and post-transfer viability, together with the degree of selection which is applied to the available biological material. Any valid assessment must include reference to all the above aspects, particularly when comparing cryopreserved oocytes with non-frozen controls or cryopreserved embryos. Cumulative pregnancy rates from oocyte collections may provide the most relevant index of success. Survival of human oocytes cryopreserved using current methodology is similar to that achieved with early-cleavage-stage embryos. Although evidence suggests that developmental potential may be compromised when current oocyte cryopreservation protocols are applied, there is a paucity of rigorously controlled studies in the literature.</description><subject>Adult</subject><subject>clinical efficiency</subject><subject>Cryopreservation - methods</subject><subject>cryosurvival</subject><subject>embryo development</subject><subject>Embryo Implantation</subject><subject>Embryo, Mammalian - metabolism</subject><subject>Female</subject><subject>Fertility</subject><subject>Freezing</subject><subject>human oocyte</subject><subject>Humans</subject><subject>Infertility - therapy</subject><subject>Male</subject><subject>Obstetrics and Gynecology</subject><subject>oocyte cryopreservation</subject><subject>Oocytes - cytology</subject><subject>Oocytes - metabolism</subject><subject>Pregnancy</subject><subject>Pregnancy Outcome</subject><subject>Time Factors</subject><subject>Treatment Outcome</subject><issn>1472-6483</issn><issn>1472-6491</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkE1v1DAQhq0K1C_4CUU5IXpIO5MPx75QoQpoq0o9FM6WM5moLtl4aydF-fcku1sqceE0o_Ez78iPECcIZwgoz--xqLJUFir_hHAqQSmd6j1xuBtrfPO3V_mBOIrxEQAVqHxfHGBVZKXKskNxc-V_J_HBj12TDA-cUOd6R7ZLuG0dOe5pSnybeE_TML-Gya8DRw7PdnC-T2pOVmzjGLi5eCfetraL_H5Xj8XPb19_XF6lt3ffry-_3KZUoBrSoiXKoCUsS5K1Bl3qWkLGRZNVACURW9tYrIsKtLa11IiEnOcz3bQkZX4sPm5z18E_jRwHs3KRuOtsz36MpoJcqgL1DJZbkIKPMXBr1sGtbJgMglkkmo1EsxhaRhuJZtn7sDsw1ituXrd21mbgYgvw_M1nx8HEjSpuXGAaTOPdf098_ifhRfwvnjg--jH0s0ODJmYGtiFLBsImQed_AJ22lr4</recordid><startdate>2007</startdate><enddate>2007</enddate><creator>Edgar, David H</creator><creator>Gook, Debra A</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>2007</creationdate><title>How should the clinical efficiency of oocyte cryopreservation be measured?</title><author>Edgar, David H ; Gook, Debra A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c418t-4fcc20fc155c6b90959b602e4d27005cceaada1b47099ab6911c1e335c6dfc663</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Adult</topic><topic>clinical efficiency</topic><topic>Cryopreservation - methods</topic><topic>cryosurvival</topic><topic>embryo development</topic><topic>Embryo Implantation</topic><topic>Embryo, Mammalian - metabolism</topic><topic>Female</topic><topic>Fertility</topic><topic>Freezing</topic><topic>human oocyte</topic><topic>Humans</topic><topic>Infertility - therapy</topic><topic>Male</topic><topic>Obstetrics and Gynecology</topic><topic>oocyte cryopreservation</topic><topic>Oocytes - cytology</topic><topic>Oocytes - metabolism</topic><topic>Pregnancy</topic><topic>Pregnancy Outcome</topic><topic>Time Factors</topic><topic>Treatment Outcome</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Edgar, David H</creatorcontrib><creatorcontrib>Gook, Debra A</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Reproductive biomedicine online</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Edgar, David H</au><au>Gook, Debra A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>How should the clinical efficiency of oocyte cryopreservation be measured?</atitle><jtitle>Reproductive biomedicine online</jtitle><addtitle>Reprod Biomed Online</addtitle><date>2007</date><risdate>2007</risdate><volume>14</volume><issue>4</issue><spage>430</spage><epage>435</epage><pages>430-435</pages><issn>1472-6483</issn><eissn>1472-6491</eissn><abstract>Abstract Clinical application of oocyte cryopreservation may be in the context of fertility preservation for women about to undergo cytotoxic therapies or may be as an alternative to embryo cryopreservation in routine assisted reproduction. 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subjects | Adult clinical efficiency Cryopreservation - methods cryosurvival embryo development Embryo Implantation Embryo, Mammalian - metabolism Female Fertility Freezing human oocyte Humans Infertility - therapy Male Obstetrics and Gynecology oocyte cryopreservation Oocytes - cytology Oocytes - metabolism Pregnancy Pregnancy Outcome Time Factors Treatment Outcome |
title | How should the clinical efficiency of oocyte cryopreservation be measured? |
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