Related Experiment Video
Updated: May 26, 2026
07:37
A Mouse Model of Retinal Ischemia-Reperfusion Injury Through Elevation of Intraocular Pressure
Published on: July 14, 2016
Neuroglobin protection in retinal ischemia.
Anita S Y Chan1, Sindhu Saraswathy, Matus Rehak
1Doheny Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Investigative Ophthalmology & Visual Science
|December 15, 2011
Summary
Neuroglobin (Ngb) overexpression protects the retina from ischemia reperfusion injury. This neuroprotection is achieved by reducing mitochondrial oxidative stress and apoptosis, preserving retinal structure and function.
Area of Science:
- Neuroscience
- Ophthalmology
- Cellular Biology
Background:
- Neuroglobin (Ngb) is a protein primarily found in the retina and brain.
- Its role in protecting retinal cells from damage, particularly during oxygen deprivation, is under investigation.
Purpose of the Study:
- To investigate the neuroprotective effects of Neuroglobin (Ngb) in the retina during ischemia reperfusion (IR) injury.
- To assess the impact of Ngb overexpression in vivo using Ngb-transgenic (Ngb-Tg) mice.
Main Methods:
- Retinal IR was induced in Ngb-Tg and wild-type (WT) mice.
- Evaluated Ngb mRNA and protein levels, retinal histology, mitochondrial oxidative stress, and apoptosis.
- Utilized morphometry, immunohistochemistry, quantitative PCR, and Western blot techniques.
Main Results:
- Ngb-Tg mice showed significantly higher Ngb mRNA and protein expression, localized to retinal mitochondria.
- Overexpression of Ngb reduced mitochondrial DNA damage in IR-affected retinas.
- Ngb-Tg mice exhibited preserved retinal thickness and reduced apoptosis compared to WT mice.
Conclusions:
- Overexpression of Neuroglobin provides a neuroprotective effect against retinal ischemia reperfusion injury.
- This protection is mediated by a reduction in mitochondrial oxidative stress-induced apoptosis.
