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4-Hydroxynonenal: a specific indicator for canine neuronal-retinal ceroidosis
A N Siakotos1, R Bray, E Dratz
1Department of Pathology, Indiana University School of Medicine, Indianapolis 46223.
American Journal of Medical Genetics. Supplement
|January 1, 1988
Summary
This study found elevated levels of 4-hydroxynonenal (HNE) in neutrophils and tissues of dogs with neuronal ceroid-lipofuscinoses (NCL). These findings suggest HNE plays a role in NCL pathogenesis.
Area of Science:
- Biochemistry
- Neuroscience
- Veterinary Medicine
Background:
- Neuronal ceroid-lipofuscinoses (NCL) are a group of inherited neurodegenerative disorders.
- Previous studies have not identified lipid peroxidation abnormalities in NCL.
- 4-hydroxynonenal (HNE) is a marker of lipid peroxidation.
Purpose of the Study:
- To investigate the concentration of HNE in a canine model of NCL.
- To determine if HNE levels are altered in affected dogs and carriers.
- To explore the role of HNE in NCL pathogenesis.
Main Methods:
- Peripheral blood cells and tissues from affected and control dogs were analyzed.
- HNE was quantified using gas chromatography after derivatization.
- HNE levels were compared between affected, carrier, and normal dogs.
Main Results:
- Neutrophils from NCL-affected dogs and carriers showed significantly higher HNE concentrations compared to controls.
- Affected dogs exhibited elevated HNE levels in brain and retinal pigment epithelium (RPE).
- Brain and RPE showed the most severe pathological damage.
Conclusions:
- This study demonstrates elevated HNE levels in a canine model of NCL.
- HNE may play a significant role in the pathogenetic mechanisms of NCL.
- The cytotoxic properties of HNE suggest its involvement in neuronal damage in NCL.