Late-Onset Inner Retinal Dysfunction in Mice Lacking Sigma Receptor 1 (σR1)

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Late-onset inner retinal dysfunction in mice lacking sigma receptor 1 (σR1).

PURPOSE Sigma receptor 1 (σR1) is expressed abundantly in the eye, and several reports suggest that this putative molecular chaperone plays a role in lens cell survival, control of intraocular pressure (IOP), and retinal neuroprotection. The present study examined the consequence of the absence of σR1 on ocular development, structure, and function. METHODS Wild-type (σR1⁺/⁺), heterozygous (σR...

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Diabetes accelerates retinal ganglion cell dysfunction in mice lacking sigma receptor 1

PURPOSE Sigma receptor 1 (σR1) is a non-opioid transmembrane protein that may act as a molecular chaperone at the endoplasmic reticulum-mitochondrial membrane. Ligands for σR1, such as (+)-pentazocine [(+)-PTZ], confer marked retinal neuroprotection in vivo and in vitro. Recently we analyzed the retinal phenotype of mice lacking σR1 (σR1 KO) and observed normal retinal morphology and function i...

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Accelerated retinal ganglion cell death in mice deficient in the Sigma-1 receptor

PURPOSE The sigma-1 receptor (σR1), a ligand-operated chaperone, has been inferred to be neuroprotective in previous studies using σR1 ligands. The σR1 specificity of the protective function, however, has yet to be firmly established, due to the existence of non-σR1 targets of the ligands. Here, we used the σR1-knockout mouse (Sigmar1(-/-)) to demonstrate unambiguously the role of the σR1 in pr...

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(+)-Pentazocine Reduces NMDA-Induced Murine Retinal Ganglion Cell Death Through a σR1-Dependent Mechanism

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Mice lacking G-protein receptor kinase 1 have profoundly slowed recovery of cone-driven retinal responses.

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ژورنال

عنوان ژورنال: Investigative Opthalmology & Visual Science

سال: 2011

ISSN: 1552-5783

DOI: 10.1167/iovs.11-8169