I-vitrification yeembryo zeseli

I-IVF ( in vitro fertilization ), kukho imfuneko yokugcina ii-cells okanye imbrusi. Kukho iintlobo ezimbini eziphambili ze-cryopreservation ze-embrosi: ukucotha ukucotha kunye ne-vitrification.

Iintlobo ze-cryopreservation ye-embrys

Ukunyuka kweqhwa yindlela engapheliyo, apho indlela yokuqhaqha amanzi evela embryo isebenzisa i-nitrojeni yamanzi. Kulo mbungu kunye ne-cryoprotective media (ukukhusela kumonakalo ngotshani) kufakwa kwi-plastic straw kwaye icolile ukuya kuma-0.5 degrees ngomzuzu ukuya kwi -7 degrees. Emva koko bayachukumisa umquba kunye neesibini zokugcoba ezixutywe kwi-nitrojeni yamanzi (iqhwa amanzi ukusuka embryo), pholisa ngokukhawuleza ukuya kuma-35 degrees, uze uthumele kwi-nitrogen yamanzi uze uphelele ukupholisa kuma -196 degrees.

Ukungonakali kwindlela ngendlela leyo ngokwayo, ukuba utyeshelo lwe-humidration kusiza ukusinda embryo kwiqhwa, kwaye ngakwelinye icala kunokuyichitha ngokuchanekileyo ngenxa yokudambiswa kwamanzi - amanzi anxulumene namaprotheni aya kushiya umzimba, otshabalalisa iiseli.

Iindlela ezininzi zanamhlanje i-vitrification yama-embrosi. Ngexesha elifanayo, ukucotha ngokukhawuleza kupheliswa kunye nokubunjwa kwamakhadi e-ice. I-straw eyenziwe ngeplastiki eneendaba ezinokuthenjelwa kunye neyinkimbinkimbi yeendaba ezincinci zenziwa ngokukhawuleza kwi-nitrojeni yamanzi, isebenzisa ukuguquka ngokukhawuleza kwamanzi onke kwi-vitreous state. Ngale ndlela, akukho nkunkuma ye-embryo kwaye iyakwazi ukunyamezela ngokungaqhelekanga ngaphandle kokulimaza.

Ngomngcipheko oqhekezayo, ukufa kwama-embryythi kunokusukela kuma-25 ukuya kuma-65%, kwaye xa kuthe kwenziwa i-vitrification - kuphela 10-12%. Kwi-nitrojeni yamanzi, ama-embryos angagcinwa ukufikelela kwiminyaka eyi-12. Iimbrusi ezifuthiweyo azihlali zifunekayo: zivame ukutshiza amaqanda amaninzi, kodwa akukho ma-embrasi angama-2-3 afakwa kwisibeletho sokufakelwa. Kodwa ii-embrasi ezincinci zingasetyenziswa kunye nexesha, njengoko kungekho rhoqo emva kokukhulelwa kwe-IVF kufike ngokukhawuleza, kwaye i-embbryos ekhuselekileyo iyafuneka kwiimvavanyo ezilandelayo. Ukuba ukukhulelwa kuye kwenzeke, ngoko kwemvume yabazali abazaliswe ngama-embryo ashushu angatshatyalaliswa.

I-Vitrification yamaqanda kunye ne-spermatozoa

Ukongeza kwimibrobri yokuqandisa, kunokufuneka ukuba ukhenkce kunye neeseli zegciwane. I-Vitrification yesidoda ingafuneka phambi kokuba utyunjwe umntu, emva koko amandla akhe okutshiza angancitshiswa. Ngaphambi kokuqhwala, i-sperm ihlolwe kwaye enye isetyenzisiweyo equkethe i-spermatozoa ngokuhamba kakuhle kwaye kungekho monakalo.