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  • 1 Semmelweis Egyetem, Általános Orvostudományi Kar I. Szülészeti és Nőgyógyászati Klinika Budapest Baross u. 27. 1088
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Terhesség során, a méhlepényen keresztüli kétirányú sejtforgalom következtében idegen sejtek vagy DNS kerülnek mind az anya, mind a magzat szervezetébe. Ez a jelenség a magzati, illetve anyai microchimaerismus. Ezen sejtek akár évtizedekkel a szülés után is kimutathatók a gazdaszervezetből. Annak ellenére, hogy számos kutatás foglalkozik e jelenséggel, a microchimaerismus egészségben és betegségekben betöltött jelentősége továbbra is csak kevéssé ismert. Cikkünkben áttekintést szeretnénk nyújtani a tudomány jelenlegi állásáról. A microchimaerismus lehetséges szerepét leginkább autoimmun folyamatok patogenezisében, nem autoimmun betegségek és tumorok kialakulásának vagy éppen regressziójának magyarázatában, továbbá a transzplantációs immunológia lehetséges komponenseként vizsgálták. A microchimaerismus jelensége fontos praenatalis noninvazív diagnosztikai lehetőségeket rejthet magában, megszüntetve a jelenleg alkalmazott vizsgálóeljárásokkal együtt járó vetéléskockázatot. A folyamatosan fejlődő sejtidentifikációs és -dúsító eljárásoknak köszönhetően várhatóan egyre több, a szervezetben lezajló folyamatról derül majd ki, hogy a terhességi örökségként az anyai és magzati szervezetbe került microchimaerasejtek és DNS szerepet játszanak bennük. Orv. Hetil., 2010, 49, 2019–2024.

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