miRNA Profiling of Human Optic Nerve Head Astrocytes Exposed to Cyclic Stretch

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dc.contributor.advisorTovar-Vidales, Tara
dc.contributor.committeeMemberClark, Abbot F.
dc.contributor.committeeMemberLiu, Yang
dc.creatorRangan, Rajiv S.
dc.date.accessioned2022-05-27T15:34:55Z
dc.date.available2022-05-27T15:34:55Z
dc.date.issued2021-05
dc.description.abstractGlaucoma is a leading cause of irreversible blindness. Vision loss results from the degeneration and death of retinal ganglion cells (RGCs) and their axons. The primary risk factor for glaucoma is increased intraocular pressure (IOP) (2). Elevated IOP results in aberrations in the biomechanical properties of ocular tissues - including the transmission of biomechanical stretch through the reticulated, fibroelastic region of the optic nerve head (ONH) known as the lamina cribrosa (LC) (6). Cells of the LC are sensitive to biomechanical stretch and respond to increased stretch and pressure to promote the excessive synthesis of extracellular matrix (ECM) proteins and ECM remodeling (15,17). These responses promote a fibrotic environment within the LC that can cause mechanical damage to the axons of RGCs. ONH astrocytes represent one of the major cell types of the LC and are believed to contribute significantly to pathological ECM remodeling at the LC during glaucoma (11). ONH astrocytes also demonstrate a dysregulated pattern of protein expression when exposed to stretch (17). The mechanism that underlies this stretch-induced, aberrant dysregulation is unknown. MicroRNA (miRNA) dysregulation may represent one of the mechanisms contributing to the differential protein expression patterns seen in ONH astrocytes exposed to stretch. In this study we examine the miRNA profiles of ONH astrocytes exposed to cyclic stretch.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/20.500.12503/31157
dc.language.isoen
dc.subjectcyclic stretch
dc.subjectoptic nerve head
dc.subjectlamina cribrosa
dc.subjectastrocyte
dc.subjectmicroRNA
dc.subjectmiRNA
dc.subjectextracellular matrix
dc.subject.meshMicroRNAs
dc.subject.meshEye Diseases/ therapy
dc.subject.meshGlaucoma
dc.titlemiRNA Profiling of Human Optic Nerve Head Astrocytes Exposed to Cyclic Stretch
dc.typeThesis
dc.type.materialtext
thesis.degree.departmentGraduate School of Biomedical Sciences
thesis.degree.disciplineMedical Sciences Premedical Program
thesis.degree.grantorUniversity of North Texas Health Science Center at Fort Worth
thesis.degree.nameMaster of Science

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