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dc.contributor.authorLai, Juliaen_US
dc.date.accessioned2016-07-11T16:36:14Z
dc.date.available2016-07-11T16:36:14Z
dc.date.issued2016
dc.identifier.urihttps://hdl.handle.net/2144/16986
dc.description.abstractPURPOSE: To determine, under flow conditions, whether reduced connections between Schlemm’s canal (SC) inner wall (IW) and juxtacanalicular tissue (JCT) cells play a role in giant vacuole (GV) formation; and whether decreased amount of cell margin overlap between adjacent IW cells promotes paracellular pore formation using serial block-face scanning electron microscopy (SBF-SEM). METHODS: Normal human eyes were immersion-fixed (0 mmHg, N=2) or perfusion-fixed (15 mmHg, N=1). Frontal and radial sections of SC were processed for SBF-SEM. IW and JCT cells, GVs, and pores were 3D-reconstructed. In each IW cell, total number of connections with underlying JCT cells/matrix was determined. Total cell margin length (TCML) and zero-overlap length (ZL) of each IW cell were measured to calculate percent zero-overlap length (PZL=ZL/TCML). All data were compared between the eyes fixed at 0 and 15 mmHg. RESULTS: Total number of IW/JCT connections in individual IWs significantly decreased in the eye fixed at 15 mmHg (33±5, N=5 cells) compared to those fixed at 0 mmHg (189±12, N=4 cells, p<0.001). The summed GV volume in individual cells significantly increased in the eye fixed at 15mmHg (218.03±19.65 μm3) compared to those fixed at 0 mmHg (82.33±27.22 μm3, p=0.0043). PZL increased 26.68% (p=0.001) in the eye fixed at 15mmHg vs. those fixed at 0mmHg, and all paracellular pores were found only in regions where the overlap length was 0 μm. CONCLUSIONS: Cellular connections between IW/JCT and IW/IW cells play a role in GV and pore formation in normal human eyes under flow conditions. Our results provide a baseline for future comparison with primary open angle glaucoma eyes.en_US
dc.language.isoen_US
dc.subjectOphthalmologyen_US
dc.subject3D EMen_US
dc.subjectGiant vacuolesen_US
dc.subjectGlaucomaen_US
dc.subjectPoresen_US
dc.subjectSchlemm's canalen_US
dc.subjectSerial block-face scanning electron microscopyen_US
dc.titleInvestigation of the two types of cellular connections of Schlemm's canal inner wall cells and their role in giant vacuole and pore formation by serial block-face scanning electron microscopyen_US
dc.typeThesis/Dissertationen_US
dc.date.updated2016-06-18T22:28:27Z
etd.degree.nameMaster of Scienceen_US
etd.degree.levelmastersen_US
etd.degree.disciplineAnatomy & Neurobiologyen_US
etd.degree.grantorBoston Universityen_US


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