Nhoroondo ye vitrification nzira
Izvo zvinofanira kuonekwa kuti kushandiswa kwemutambo uyu pane dzimwe nguva kwakawedzera chiyero chemaawa mairi mushure mekudzivirira. Panguva imwecheteyo, inenge 90 muzana yemashiripiti ese ane maitiro akanaka kwazvo emafungiro emitemo, izvo zvinoita kuti zvive nyore kuti zvivashandise zviri nyore mu IVF.
Asati tadzokera kune chinangwa chemhando yacho, zvakakosha kutaura pamusoro penhoroondo yekuwanikwa kweyi nzira yekuchengetedza masero epabonde emudzimai wechikadzi.
Iyi teknolojia yezai yezai yakaonekwa munguva pfupi yapfuura, apo nyika yakaona kuchinja kwemamiriyoni - muna 2000. Munyori wegadziriro yaiva chiremba wechiJapan Masashige Kuvayama. Kubva kushandiswa kwokutanga kwemuitiro uyu wekuchengetedza mararamiro, maitiro ekuvhenekera ave achiitwa kanenge hafu yemamiriyoni mumakiriniki akasiyana-siyana akasiyana-siyana akapararira munyika yose. Mwana wekutanga semugumisiro wekusimudza kwechikadzi chepabonde chechikadzi chakazvarwa muna 2002 muJapan. Chiitiko chevaJapan vaishanda navo chakashandiswa nevaAmerica, gore rakatevera (2003).
Parizvino, iyo nzira yakawana zvimwe zvitsva, uye yakanyatsogadziridzwa. Kuvonga kwemazuva ano ekugadzirisa zvinogadziriswa, egg inokwanisa kuchengetwa kwemakore anopfuura zana.
Ko mazai echando akachengetwa sei?
Nzira yekusvibiswa kwezvinyorwa zvinotangira nehuwandu hwakawanda hwezvidzidzo zvinotarisirwa kusimbisa hutano hwemazai emudzimaikadzi. Mushure meizvi, vanotanga maitiro ekurapa kwehomoni, kukurudzira, izvo zvinodanwa kuti kukunda-chiito umo mamwe maitiro ezvepabonde akakurira panguva imwe chete anowedzera mudumbu. Panguva ino, kutarisa nekubatsira kwe ultrasound zvigadzirwa zvehupuka mazai anoitwa pamwe nekuongororwa kwehuhu hwavo.
Kusarudza masero emhando dzepabonde zvakakodzera kuti zviitwe, chiremba anoita chivharo, umo maunganidzwa emazai. Zvinhu zvakagadzirwa zvinowanikwa mune imwe sarudzo inokosha. Mushure mezvo, ramba uchienda nenzira chaiyo ye vitrification.
Iyi nzira inotora kushandiswa kwemvura inonzi nitrogen senhengo inopisa, iyo inotonhora iyo inenge inopfuura 196 degrees. Iko mu capsule nayo iyo yakaunganidzwa mazai akaiswa.
Ndezvipi zvinobatsira zvekombiyuta iyi uye ndeipi iyo inogona kuitwa?
Sezvazvinozivikanwa, kune vakadzi vose, anenge makore 35-40, kuderera kwekubereka kunoshanda kunoonekwa. Nokudaro, zvipfeko zvepabonde zvinorasikirwa nehuwandu hwemabasa, basa ravo rinooneka rakaipa. Ndicho chikonzero vakadzi vemuzera iri vanotanga kunetseka nekutora pamuviri.
Ndicho chikonzero kuunganidza mazai, mavrification avo uye kuchengetedza mu cryobank ndiyo nzira yakanakisisa yevakadzi avo, pamusana pezvikonzero zvikonzero, havagoni kuva nevana panguva (zvirwere zvekuberekwa, zvirongwa zvezvemagariro, etc.).
Kana tikataura nezvemazera ezera rekudzima, vanachiremba vanoti izvi zvinogona kuitwa kusvika kumakore makumi mana nemashanu. Zvisinei, inofanira kutarirwa mupfungwa kuti nezera, nhamba ye mazai akakodzera kubhabhatidza inoderera.