Akitaka Tsujikawa1, Yuichiro Ogura. 1. Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Abstract
PURPOSE: We reviewed various methodologies for studying leukocyte-retinal endothelial interactions in vivo, and summarized the information obtained from studies employing these methods. PROCEDURES: Fluorescence dye-enhanced scanning laser ophthalmoscopy facilitates study of leukocyte-cell interactions in the retinal microcirculation. RESULTS: Various methods such as adaptive optics scanning laser ophthalmoscopy (AO-SLO), acridine orange digital angiography, and intravital microscopy provided evidence of the mechanisms of leukocyte recruitment in the retina and of their importance in the pathogenesis of various retinal diseases. CONCLUSIONS: Leukocyte behavior can be easily examined in the retina in vivo because the optical media is transparent. SLO substantially contributes to visualizing leukocyte-endothelial interactions in retinal vessels, although most of the methods employing SLO could only be used for animal studies. AO-SLO noninvasively demonstrates the movement of each leukocyte in the parafoveal capillaries in humans. Message: AO-SLO could be useful in investigating the leukocyte-retinal endothelial interactions in various diseases in humans.
PURPOSE: We reviewed various methodologies for studying leukocyte-retinal endothelial interactions in vivo, and summarized the information obtained from studies employing these methods. PROCEDURES: Fluorescence dye-enhanced scanning laser ophthalmoscopy facilitates study of leukocyte-cell interactions in the retinal microcirculation. RESULTS: Various methods such as adaptive optics scanning laser ophthalmoscopy (AO-SLO), acridine orange digital angiography, and intravital microscopy provided evidence of the mechanisms of leukocyte recruitment in the retina and of their importance in the pathogenesis of various retinal diseases. CONCLUSIONS: Leukocyte behavior can be easily examined in the retina in vivo because the optical media is transparent. SLO substantially contributes to visualizing leukocyte-endothelial interactions in retinal vessels, although most of the methods employing SLO could only be used for animal studies. AO-SLO noninvasively demonstrates the movement of each leukocyte in the parafoveal capillaries in humans. Message: AO-SLO could be useful in investigating the leukocyte-retinal endothelial interactions in various diseases in humans.
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