Biomechanical properties of retinal glial cells: Comparative and developmental data

The biomechanical properties of Müller glial cells may have importance in understanding the retinal tissue alterations after retinal surgery with removal of the inner limiting membrane and during the ontogenetic development, respectively. Here, we compared the viscoelastic properties of Müller cells...

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Veröffentlicht in:Experimental eye research 2013-08, Vol.113, p.60-65
Hauptverfasser: Lu, Yun-Bi, Pannicke, Thomas, Wei, Er-Qing, Bringmann, Andreas, Wiedemann, Peter, Habermann, Gunnar, Buse, Eberhard, Käs, Josef A., Reichenbach, Andreas
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Sprache:eng
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Zusammenfassung:The biomechanical properties of Müller glial cells may have importance in understanding the retinal tissue alterations after retinal surgery with removal of the inner limiting membrane and during the ontogenetic development, respectively. Here, we compared the viscoelastic properties of Müller cells from man and monkey as well as from different postnatal developmental stages of the rat. We determined the complex Young's modulus E* = E′ + iE″ in a defined range of deforming frequencies (30, 100, and 200 Hz) using a scanning force microscope, where the real part E′ reflects the elastic property (energy storage or elastic stiffness) and the imaginary part E″ reflects the viscous property (energy dissipation) of the cells. The viscoelastic properties were similar in Müller cells from man, monkey, and rat. In general, the elastic behavior dominated over the viscous behavior (E′ > E″). The inner process of the Müller cell was the softest region, the soma the stiffest (Einnerprocess′
ISSN:0014-4835
1096-0007
DOI:10.1016/j.exer.2013.05.012