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Science & Vie (Digital)

Science & Vie (Digital)

1 Issue, No. 1285

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Dausset vs Hamburger : la “controverse HLA”

Dausset vs Hamburger : la “controverse HLA”
Comment maximiser les chances de réussite d’une greffe de rein ? Tout le problème est que, sans traitement, l’organe greffé est rejeté par le système immunitaire du receveur, qui le considère comme un corps étranger. Il faut donc sélectionner le meilleur greffon possible… mais sur quels critères ? Un espoir de réponse apparaît en 1952 lorsque l’immunologiste Jean Dausset découvre des “antigènes des leucocytes humains”. Il comprend que, comme les groupes A, B, O et AB pour les globules rouges, des groupes existent pour les tissus humains : c’est le “système HLA”. De même que la compatibilité entre groupes sanguins assure le succès des transfusions sanguines, Dausset pense que la compatibilité HLA entre donneur et receveur augmente les chances de réussite de la greffe. Problème : il existe une immense variété…
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Science & Vie (Digital) - 1 Issue, No. 1285

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