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Quantitative evaluation of cell morphology and material interactions on opaque biomaterials

Abstract One of the key aspects in the development of novel implants is to find suitable materials and understand the mechanisms that occur when a material is exposed to the tissues of the human body. These mechanisms are commonly referred to as the biocompatibility of the material. A better understanding of the tissue-material interactions becomes more urgent as biomaterials are used in wide-ranging applications like modern medical devices. However, most biomaterials used for implants are opaque, resulting in difficulties for the microscopical evaluation during in vitro biocompatibility testing. Particularly, cell morphology and adhesion capabilities of cells can provide insights in the interactions between implant materials and tissues at the implant site. To improve our capabilities in biocompatibility testing of novel biomaterials we applied a new method to quantitatively assess cellular parameters on opaque samples using fluorescence microscopy and bio-image analysis.