Kwihlabathi lezityalo, i-vitrification isetyenziselwa ukunyuka kwamaqanda, ama-embryos kunye nesidoda. Ngokuqhelekileyo, i-vitrification yindlela yokuguqula into into efana neglasi. Ivela kwi-Latin root root , echaza iglasi. I-teknoloji ye-Vitrification isetyenziselwa ukuguqula isanti ibe ngilazi, ukunika izimbiza ze-ceramic ekugqibeleni ukubonakala kwazo, kunye nokuzinzisa umbane we-nyukliya ukulahlwa ngokukhuselekileyo.
I-Vitrification iye yaphucula impumelelo ye-cryopreservation. Izindlela endala zibandakanyeka i-frozen slow, ngelixa i-vitrification ikhawuleza kakhulu.
Kukhawuleza njani? Ngethuba lokusetyenziswa kwe-vitrification, i-embryo okanye iqanda likhutshwe ngamawaka ngama-degrees ngomzuzu.
Yintoni i-Vitrification? Ingaba isebenza kanjani?
Kuze kube kutshanje, indlela yokuphela kwama-oocyte amaqanda (okanye amaqanda angenayo i-unfertilized) yindlela epholileyo. Oku kusebenze ngokufanelekileyo ngokuqandisa isidoda okanye imibungu. Nangona kunjalo, kumaqanda, inkqubo yokuqhwaba iphosakeleyo yayineengxaki ezininzi.
Iikristali ze-Ice ziyimpikiswano enkulu. Amaqanda aqukethe amanzi amaninzi, xa kuthelekiswa nesidoda kunye nemibungu. Amaqanda amaqabunga ayekhokelela ekwakheni i-crystal. Ezi kristali zaphula iqanda.
Ukuncedisa ukunciphisa inani lama-crystal, izazinzulu ziya kususa ezinye zamanzi. Kodwa akunakwenzeka ukususa onke amanzi.
Xa amaqanda athatyathwa, awonakaliswe kwaye ayisoloko ayisebenziseka. Ukufakela umquba kunye nokukhulelwa kwezi-maqanda ezinqabileyo ziphantsi.
Ngokuqinisekileyo, inqubo yokuqhwaba iyakhawuleza kangangokuthi ama-crystals amaqhwa angenalo ithuba lokwenza. I-Vitrification yenza ukuba iqanda likhuphe iqhosha elincinci ngakumbi kubafazi.
I-vitrification isetyenziselwa i-embryo kunye ne-spyopreservation yesidoda. Uphando luqhubekayo, kodwa ngoku, ukukhulelwa kwezinga lokukhulelwa kubonakala kuphezulu kunye ne-vitrification.
I-Vitrification yamaqanda isebenza njani?
I-Vitrification yamaqanda idinga ukukhutshwa okuphezulu kwama-cryopreservants, okanye i-substance-freezefreeze. Ngenxa yokuba ukulwa nokuqhwala kunokuba yingozi kwiqanda, ubuchule bufuna unonophelo olulodwa.
I-oocyte ibeka kuqala kwindawo yokuhlamba kunye ne-concentration e-anti-froze. Isisombululo siqulethe i-sucrose, okanye ishukela, ukunceda ukukhupha amanzi ngaphandle kweqanda. Emva koko, iqanda lifakwe kwindawo yokuhlambela ngokugqithiseleyo yokuqhafaza ingaphantsi komzuzu omnye, ngelixa lichithwa ngokukhawuleza.
Amaqanda angagcinwa kwiifriji ezikhethekileyo ze-cryogenic, ezenzelwe le njongo. Amaqanda aphethwe emancinci amancinci.
Xa lixesha lokuthambisa iqanda, i-oocyte kufuneka ifudumele ngokukhawuleza ize isuswe kwisisombululo ngokukhawuleza.
Emva kokutshatyalaliswa, iqanda lingasetyenziselwa ukusebenzisa i- IVF ne- ICSI . I-ICSI ibandakanya ukuthatha isidoda esisodwa kunye nokuyijoza eqondisa iqanda. Ngokuqhelekileyo i-IVF ayinakwenzeka kuba inkqubo yokuqhwaba iqinisa amaqanda angaphandle.
Xa i-Vitrification isetyenziswa nini?
I-vitrification ingasetyenziselwa ukunyusa ama-embrypreserve, amaqanda, i-sperm, kunye nama-ovarian tissue.
Imiba apho ingasetyenziswa khona i-vitrification:
Ukulondoloza ukuzala ngaphambi kokunyanga komhlaza: ezinye izifo zonyango zibangelwa ukubola.
Ukuba ibhinqa likhupha amaqanda ayo, okanye umntu ukhulula isisu sakhe, unokukwazi ukusebenzisa iqanda okanye isidoda emva kokuba unyango lomhlaza lube nomntwana.
I-ovarian tissue frozen is teknoloji entsha, enye inceda kakhulu amantombazana amancinci.
Ukuba akazange adlule ebusheni, akunakwenzeka ukufumana amaqanda avuthiweyo kuma-ovari. Nangona kunjalo, izicubu ze-ovari ziyakhutshwa. Inkqubo isasazama.
Isimo sonyango esingaba nefuthe kwixesha elizayo: ukuba umfazi usemngciphekweni wokuyeka umyeni okanye ukungafihleki kwe-ovarian yokuqala (eyaziwa ngokuba yi-ovarian premature failure), unako ukumisa amaqanda akhe xa eselula kwaye esaphila amaqanda aphilileyo.
Ukukhupha ama-embro emva kwe-IVF : Nayiphi na i-embrasi eyongezelelweyo eyashiywe ngexesha lomjikelezo we-IVF inokwenziwa ngokutsha.
Kuze kube ngoku, uphando lufumene impumelelo enkulu nangama-embryos aqhoqhoqho nge-vitrification, ngokuchasene nenkqubo epholileyo.
Iibhanki zabanikeli be-egg: Kwakuqhele ukuba ukuba ufuna i-IVF yeqanda , umnikeli kufuneka ahambe kwinkqubo yokunyanga inzala ngexesha elifanayo njengokuba wenza. Kwabandakanya ukulawula zombini imijikelezo yakho ukuba ifike ngexesha elifanayo.
Yinkqubo eyindleko neyinkimbinkimbi.
Abantu basenza "umxhasi omtsha". Kodwa ngeebhanki zeqanda, ngenxa yetheknoloji ye-vitrification, unokufumana iiqanda zangamaqanda zangamaqanda asebenzise ngexesha le-IVF. Iindleko zingaphantsi.
Ukwandisa iminyaka yokubeletha : iqanda eliqandayo ukuze uphephe ukukhulelwa kwexesha elidala lisekho mpikiswano.
I-American Society of Medicine Reproductive iphikisana nembono, ithi isicatshulwa sitsha. Uphando alubonakalanga ngokucacileyo iinjongo ezingenakunzima ngaphezu kweengozi.
Ukukhulelwa kwamakhulu ambalwa kuphela avela kwiqanda eliqhumayo leqanda, kwaye akukho nanye kula maqela afaka amaqanda aqhoqhobileyo kwiminyaka. Ininzi yophando ijolise kumaqanda aqhotyoshelweyo malunga nemibandela yeeyure okanye iinyanga.
Ukusuka kolunye uhlangothi, oogqirha bokuvelisa i-vitrification bentengiso yokuba uphando olutsha lubonisa ukuba ubuchule buyimpumelelo.
Bakholelwa ukuba lixesha lokukhulula iteknoloji entsha kulabo abafuna ukuzama.
Ziziphi iingozi ze-Vitrification? Iphumelele Kanjani?
Kuze kube ngoku, uphando lubonakala luthembise xa luthelekisa i-slow-freeze to vitrification.
Kukho iinkxalabo malunga nokutyhila kwi-cryopreservants. Izindlela ezintsha zihlala zijongwa, ukunciphisa ixesha lokukhupha amaqanda, i-sperm okanye i-embroyosibrari zibonakaliswe kwiikhemikhali ezinobungozi.
Ngokomsebenzi wophando lwangoku, ukukhulelwa nokuhlala kwamazinga okuzalwa kukuphucula amaqanda, i-sperm, kunye nama-embryos aphethwe ngamaqabunga.
Kwakhona, akubonakali kubekho ingozi yokwandisa ukukhubazeka kubantwana.
Nangona kunjalo, iteknoloji intsha. Kufuneka kwenziwe uphando olungakumbi.
Kwakhona, kubalulekile ukukhumbula akukho ziqinisekiso zokuphumelela ukukhulelwa.
Akuyiyo yonke iqanda eliyi-cryopreserved okanye umbungu oza kusinda kwinkqubo yokufudumala. Akuyiyo yonke iqanda elixutywayo eliza kutyalwa. Akuyiyo yonke imbryo eya kukhula kwaye iphile ngokwaneleyo ukuze idlulise.
Oku kubaluleke kakhulu ukuba uqonde ukuba unqanda amaqanda akho ukuba wandise iminyaka yakho yokuzala.
Imithombo:
I-ASRM ikhuthaza ukulumkisa, ukululekwa ngokuqinileyo kwabasetyhini befuna i-egg efrijini. Upapasho ndaba zekhampani. Amaphuzu avelele kwiNgqungquthela yonyaka ka-63 ye-American Society of Medicine Reproductive. Ufikelele kwiSeptemba 23, 2008.
Cobo A, Domingo J, Alamá P, Pérez S, Remoí J, Pellicer A, kunye no-Almenar-Cubells D. "I-vitrification ye-oocyte: Indlela entsha yokulondolozwa kwezilwanyana kwizigulane zomhlaza." Umbhalo we-Clinical Oncology. 26: 2008 (uMeyi we-20: unqamle 20727).
Cobo A, Kuwayama M, Pérez S, Ruiz A, uPellicer A, kunye noJohn Remoí "Ukuthelekiswa kwemiphumo ehambelanayo eyenziwa ngama-oocyte abancinci kunye nabancinciweyo abonakaliswe yiProtototop." Ukhuseleko kunye nobuthathaka. 2008 Juni; 89 (6): 1657-64. Epub 2007 Septemba 24.
I-egg, i-Ocuan Tissue, i-Embryo, kunye ne-Sperm Freezing. Isiko soKhuseleko lweSaint Louis. Kufumaneke ngoSeptemba 23, 2008. http://www.infertile.com/infertility-treatments/freeze.htm#vitrification
Ukuqhwala nokugcina amaqanda. I-Human Fertilization kunye ne-Embryology Authority. Kufumaneka ngoFebruwari 15, 2016. http://www.hfea.gov.uk/46.html
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ULucena E, uBernal DP, uLucena C, uRojas A, uMoran A, noLucena A. "Ukukhulelwa okuqhubekayo ngokuqhubekayo emva kokuvuthwa kwama-oocytes." Ukhuseleko kunye nobuthathaka. 2006 uJan; 85 (1): 108-11.
I-Oocyte ekhulile yokukhupha i-Cryopreservation: Isikhokelo. Amakhasi e-ASRM. Kufumaneka ngoFebruwari 15, 2016. http://www.socrei.org/uploadedFiles/ASRM_Content/News_and_Publications/Practice_Guidelines/Ikomiti_Opinions/Ovarian_tissue_and_oocyte(1).pdf
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