El pronóstico de la queratoplastia en pacientes con quemaduras químicas graves es muy pobre. Generalmente, los injertos no sobreviven. Sin embargo, el Dr. Stenevi ha manifestado que seis pacientes a quienes se les trasplantó células madre epiteliales de córnea mostraron un alto índice de supervivencia de injerto, después de un seguimiento de tres años.
Según el estudio, las células madre fueron seleccionadas de donantes del sexo opuesto al de la persona trasplantada. Para diferenciar las células del trasplante, el equipo de investigación utilizó la técnica de teñir los cromosomas X e Y.
"Supongamos que el donante es mujer y el paciente varón. Si se sacan muestras de las células epiteliales después de tres años del transplante y se hallan en ellas cromosomas femeninos, será una prueba de que el trasplante ha tenido éxito", ha explicado el Dr. Stenevi. "Por el contrario, si todos los cromosomas son masculinos, será una prueba de que las células pertenecen sólo al paciente".
Webs Relacionadas
Lund University
http://www.lu.se/lu/
European Society of Cataract and Refractive Surgery
http://www.escrs.org/
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