Abstract
Infantile neuronal ceroid lipofuscinosis (INCL, Infantile Batten Disease) is an inherited, neurodegenerative lysosomal storage disorder. INCL is the result of a CLN1 gene mutation leading to a deficiency in palmitoyl protein thioesterase 1 (PPT1) activity. Studies in the forebrain demonstrate the PPT1-deficient mouse (PPT1-/-) mimics the clinical symptoms and underlying pathology of INCL; however, little is known about changes in cerebellar function or pathology. In this study, we demonstrate Purkinje cell loss beginning at 3 months, which correlates with changes in rotarod performance. Concurrently, we observed an early stage reactive gliosis and a primary pathology in astrocytes, including changes in S100β and GLAST expression. Conversely, there was a late stage granule cell loss, microglial activation, and demyelination. This study suggests that neuronal-glial interactions are the core pathology in the PPT1-/- cerebellum. In addition, these data identify potential endpoints for use in future efficacy studies for the treatment of INCL.
Original language | English |
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Pages (from-to) | 124-135 |
Number of pages | 12 |
Journal | Experimental Neurology |
Volume | 217 |
Issue number | 1 |
DOIs | |
State | Published - May 2009 |
Bibliographical note
Funding Information:We would like to thank Neuroscience Associates (Knoxville, TN) for their consistent quality of silver degeneration staining. This work was supported by NIH grants (NS043105; MSS and NS41930; JDC), Ruth L. Kirschstein NRSA Fellowship (NS056728; SLM), grant support and a graduate studentship from the Batten Disease Support and Research Association (CK), and an NIH Neuroscience Blueprint Core Grant (P30 NS057105; DFW) to Washington University.
Keywords
- Astrocytes
- Batten disease
- Cerebellar mutant
- GLAST
- Gliosis
- Glutamine synthetase
- Lysosomal storage disease
- Neurodegeneration
- Rotarod
- Silver degeneration staining
ASJC Scopus subject areas
- Neurology
- Developmental Neuroscience