677 - La microglie sous rétinienne est à l’origine des drusen observés chez les souris invalidées pour le récepteur aux chimiokines CX3CR1. - 23/04/09
C* FEUMI,
W RAOUL,
N KELLER,
S LAVALLETTE,
M HOUSSIER,
F BEHAR COHEN,
C COMBADIERE,
F SENNLAUB
But: Drusen, the white yellowish deposits that can be seen in funduscopy, are a hallmark of age related macular disease (AMD). Histologically, drusen are believed to be dome-shaped or more confluent lipid accumulations between the retinal pigment epithelium and the choroicapillaries.
Objectifs and Methods: Recent advances in mouse fundoscopy have revealed the presence of drusen-like structures in chemokine knockout animals in the absence of sizeable dome-shaped material below the RPE.
Results: We show that aged CX3CR1-/- mice present with drusen-like appearance in funduscopy that is associated with a progressive age-related microglial cell.
Discussion: As bloated subretinal MCs can also be found in the human disease.
Conclusion: We demonstrate that the anatomical equivalent of the drusen-like appearance in these mice are lipid bloated subretinal MCs rather than sub-RPE deposits.
© 2009 Elsevier Masson SAS. Tous droits réservés.
Vol 32 - N° HS1
P. 201 - avril 2009 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.