Cinga ngayo, sonke sicinga ukuba iseli nganye emzimbeni wakho ine-DNA yakho, akunjalo? Yiyo loo nto isisiseko esiyaziyo nge-genetics. Kodwa, kunqabile kakhulu, umzimba womntu unokuba neeseli ezinohlobo lwesibini lwe-DNA olungelulo olwawo, kwaye oko kwahlukile ngokupheleleyo. Kuvakala kungaqhelekanga, akunjalo? Kwizonyango, le meko imangalisayo siyibiza ngokuba yi-'Chimerism'. Ungakhathazeki, ayisosifo. Masibone ukuba yintoni ngokwenene.
Yintoni 'iChimerism'?
Ngamafutshane, i-chimerism kukubakho kweeseti ezimbini zeeseli emzimbeni womntu omnye ezivela kubantu ababini abahlukeneyo ngokwemfuza. Oku kuthetha ukuba ezinye iiseli emzimbeni wakho zinokuba nohlobo olunye lwe-DNA, ngelixa ezinye iiseli zinokuba nohlobo olwahlukileyo ngokupheleleyo lwe-DNA.
Enye yeendlela eziphambili oku okunokwenzeka ngazo kukuzalwa kwamawele. Khawucinge ngomama othwele amawele esibelekweni sakhe. Kwiiveki zokuqala zokukhulelwa, enye yeembumba isenokungakhuli ize inyamalale ngesizathu esithile. Oku kubizwa ngokuba yiVanishing Twin Syndrome. Xa oku kusenzeka, iiseli ezivela kwimbumba elahlekileyo zifunxwa ngomnye umbumba ophilayo okhulayo. Ngoko ke, umntwana uya kuba neeseli zakhe kunye neeseli ezivela kumntakwabo olahlekileyo ubomi bakhe bonke.
Iintlobo zeeseli ezidibana ngolu hlobo zahlukile. Ngokuqhelekileyo, lo mahluko ubonakala egazini. Ibizwa ngokuba yi-'blood chimerism'. Oku kungenxa yokuba iiseli zegazi ezenziwe kumongo wethambo zinamandla kwaye zinokudlula ngokulula kwi-placenta. Ngokophando, malunga ne-8% yamawele aqhelekileyo anokuba nale meko. Phakathi kwamawele amathathu, eli thuba linyuka liye kuma-21%.
Zithini izizathu ze-chimerism?
Njengoko besitshilo ngaphambili, abanye abantu bazalwa benale meko. Nangona kunjalo, umntu unokuphuhlisa i-chimerism ngexesha lobomi bakhe. Kukho izizathu ezibini eziphambili zoku. Masizihlalutye ngolu hlobo lulandelayo.
| Unobangela | Inkcazo yendlela eyenzeka ngayo |
|---|---|
| I-Congenital Chimerism | Le yi-'Vanishing Twin Syndrome' esithethe ngayo ngaphambili. Elinye iqanda liyalahleka esibelekweni kwaye iiseli zalo zifunxwa lelinye iqanda, nto leyo ebangela ukuba kubekho iintlobo ezimbini zeeseli ezihlala emzimbeni ubomi bonke. |
| I-Chimerism efunyenweyo | Oku kwenziwa njengonyango olusindisa ubomi. Umzekelo, cinga ngokufakelwa amalungu omzimba . Xa umntu efumana izintso komnye umntu ophilileyo, izintso ezintsha zisebenza neDNA yomnikeli. Umntu ofumana izintso emva koko uneDNA yakhe kunye neDNA yomnikeli. Kunjalo nangokufakelwa komongo wethambo . Kwimeko enjalo, umongo wethambo womnikeli ophilileyo ufakwa endaweni yomongo wethambo onesifo. Emva koko zonke iiseli zegazi ezintsha zenziwa kwiDNA yomnikeli. Oku kunokutshintsha nohlobo lwegazi lomntu. |
Ngaba kukho naziphi na iimpawu zoku?
Iindaba ezimnandi zezokuba uninzi lwabantu abane-chimerism abanazo iimpawu. Abantu abaninzi baphila ubomi babo bonke bengazi ukuba banale meko. Ngenxa yokuba kungekho vavanyo luthile lwayo, kunqabile kakhulu ukufumana uxilongo.
Nangona kunjalo, ngamanye amaxesha oku kunokukhokelela kwiingxaki ezingenakucingelwa, ingakumbi ngovavanyo lwe-DNA.
Khawucinge nje, utata wenza uvavanyo lwe-DNA ukuqinisekisa ukuba umntwana nguyise. Kodwa iziphumo ziphuma zokuba akanguye uyise womntwana. Uqinisekile nge-100% ukuba ngumntwana wakhe. Okunokwenzeka apha kukuba ukuba utata unesifo se-chimerism, i-DNA ayikho egazini okanye ematheni akhe, kodwa kwiiseli zakhe zokuzala (isidoda). Yi-DNA yomntakwabo owalahleka esibelekweni. Emva koko umntwana unxulumene naye ngokwemfuza ngokungathi ngumntwana womnye wabantakwabo, oko kukuthi, umtshana okanye umtshana.
Izinto ezifanayo zinokwenzeka nakumama. Ke ngoko, uninzi lwexesha, i-chimerism ifunyaniswa ngenxa yokungafani okungacwangciswanga ngexesha lovavanyo lwe-DNA olunje.
Ngaba le meko ingabangela iingxaki ezinkulu?
I-Chimerism ayisosifo okanye imeko eyingozi, kodwa inokubangela iingxaki ezithile ukuba awuyazi.
- Imiba Yezomthetho: Njengoko bekutshiwo ngaphambili, iziphumo ezingachanekanga zovavanyo lobuzali zinokukhokelela kwimiba emikhulu yezomthetho malunga nokugcinwa komntwana. Kukho iziganeko ezininzi ezinjalo ezibikwe kwihlabathi liphela.
- Iingxaki zengqondo:Abanye abantu banokuziva besoyika kakhulu engqondweni kwaye benengxaki yokuzazi ukuba bangobani xa befumanisa ukuba baneenxalenye zomzimba womnye umntu.
- Ukubaluleka kwezonyango: Kungabalulekanga ukwazi ngale meko ngexesha lokudibanisa izicwili ngaphambi kokufakelwa ilungu.
Kodwa oomama akufuneki bakhathazeke 'ngesifo sokuphela kwamawele'. Ukuba oku kwenzeka kwiinyanga ezintathu zokuqala zokukhulelwa, akuyi kumenzakalisa umama okanye umntwana ophilileyo. Umama usenokungaziboni ezinye iimpawu ngaphandle kokopha kancinci.
Umyalezo Wokuya Ekhaya
- I-Chimerism kukubakho kweentlobo ezimbini ze-DNA kwisilwanyana esinye. Oku kwenzeka rhoqo ngokufunxwa kweeseli kwiwele esibelekweni okanye ngokufakelwa ilungu/umongo wethambo.
- Le ayisiyongxaki. Uninzi lwabantu abane-chimerism abanazo iimpawu.
- Ingxaki ephambili ivela kwiimvavanyo ze-DNA, ingakumbi kwizinto ezifana novavanyo lobuzali, apho iziphumo zinokungangqinelani.
- Ukuba ukhe waba nengxaki engachazekiyo ngeziphumo zovavanyo lwe-DNA, thetha nogqirha wakho malunga nokuba kungenzeka ukuba kubekho i-chimerism.
💬 Comments (0)
Akukho zimvo zithunyelweyo okwangoku. Faka uluvo lwakho apha okokuqala.
Faka uluvo lwakho