Vitrification yamaqanda

I-Vitrification yamaqanda yindlela egalela ukugcinwa kwe-biomaterial ixesha elide, leyo nayiphi na ixesha ingasetyenziselwa i-IVF. Ukuqanda amaqanda kwenziwa ngendlela enokuthi isitshixo segciwane ayitshintshe ngexesha lokugcina ixesha elide. Oku kufezekiswa ngokusebenzisa izinto ezibizwa ngokuba yi-cryoprotectants, eyanciphisa kakhulu umphumo wokushisa okuphantsi kwi-organelles ye-cell cell. Ngenxa yolu hlobo lweqabunga, ukubunjwa kwamakristal e-ice akhankanywe. Masiqwalasele le nkqubo ngokubanzi.

Imbali yendlela yokwenza i-vitrification

Kufuneka kuqatshelwe ukuba ukusebenzisa le ndlela ngezinye izihlandlo kwandise ipesenti yamaqanda asele emva kokuphazamiseka. Ngelo xesha, malunga ne-90% yazo zonke iintsholongwane zentsholongwane zinemilinganiselo efanelekileyo ye-morphological parameters, eyenza ukwazi ukuwasebenzisa ngokulula kwi-IVF.

Ngaphambi kokuba ujikelele kwisitshixo sendlela, kuyimfuneko ukuthetha ngembali yokufumanisa le ndlela yokulondoloza iseli zesini somzimba wesetyhini.

Le teknoloji yeqanda leqanda libonakala litshanje, xa ihlabathi lafumana utshintsho lwezigidigidi-ngo-2000. Umbhali wolu cwangciso wayengumgqirha waseJapan uMasashige Kuvayama. Ukususela ekusebenzisweni kokuqala kwendlela yokulondoloza i-biomaterial, inkqubo ye-vitrification iye yenziwa ubuncinane isiqingatha sezigidi ngezihlandlo ezili-1000 ezihlukeneyo ezijikeleze ihlabathi. Umntwana wokuqala ngenxa yokuchumisa kweseli yesini eqinisekisiweyo yesini wazalelwa ngo-2002 eJapan. Amava aseJapan asebenzisana nawo aseMelika, ngonyaka kamva (2003).

Okwangoku, le ndlela izuze izinto ezintsha, kwaye iphuculwe kakhulu. Siyabulela kwizicwangciso zamanqwanqwa zanamuhla, iqanda linokugcinwa iminyaka engaphezu kwe-100.

Amaqanda aqhotyoshelwe kwaye agcinwe njani?

Inkqubo yokuqhwala i-biomaterial ilandelwa yinkimbinkimbi yezifundo ezijolise ekumiseni umgangatho wamaqanda omnikeli wesetyhini. Emva koko, baqala ikhosi ye-hormone therapy, ukuvuselela, okubizwa ngokuba yi-superovulation-inkqubo apho iisetyini zesondo ezivuthiweyo zithatha ngexesha elilodwa isisu esiswini. Ngeli xesha, ukubeka iliso ngoncedo lwee-ultrasound zixhobo zeeqanda ezivuthiweyo zenziwa kunye novavanyo lomgangatho wazo.

Ukukhetha iiseli zesini ezifanelekileyo kakhulu kwinkqubo, ugqirha wenza i-puncture, apho ukuqoqwa kwamaqanda. Izinto eziqokelelweyo zifakwa kwisicombululo esikhethekileyo. Emva koko, qhubela phambili kwinkqubo yokwenza i-vitrification.

Le ndlela ithatha ukusetyenziswa kwe-nitrojeni yamanzi njenge-arhente yokubanda, iqondo lokushisa elingaphantsi kwama-degrees angama-196. Kukho kwi-capsule nayo ukuba amaqanda aqokelelwe afakwe.

Ziziphi iingenelo zale teknoloji kwaye zingenziwa nini?

Njengoko kwaziwa, kubo bonke abafazi, malunga neminyaka engama-35 ukuya kwimi-40, ukwehla komsebenzi wokuzala kubonwa. Ngaloo ndlela, izithobe zesondo zilahlekelwa ngumyinge wazo, umsebenzi wabo ubonakala bubi kakhulu. Yingakho amabhinqa kule minyaka aqala ukufumana iingxaki zokukhulelwa. Ngokwezibalo, malunga neminyaka engama-35, abafazi abanalo ngaphezu kwe-10% yenani le-oocytes ekhoyo emzimbeni ukususela ekuzalweni. Ngelo xesha, umgangatho weeseli zentsholongwane ziyancipha.

Yingakho ukuqoqwa kwamaqanda, i-vitrification kunye nokugcinwa kwazo kwi-cryobank yinto ekhethekileyo kubafazi abathi, ngenxa yezizathu ezithile, abanako ukufumana umntwana okwangoku (izifo zenkqubo yokuzala, iinkqubo zomhlaza, njl.).

Ukuba sithetha malunga nexesha elidala iqanda liza kubanda, oogqirha bathi le nkqubo inokuqhutyelwa kwiminyaka engama-41. Nangona kunjalo, kufuneka ikhunjulwe ngengqondo yokuba ngobudala, inani lamaqanda afanelekileyo lokuvakala liyancipha.