PMID- 17046272 OWN - NLM STAT- MEDLINE DCOM- 20070123 LR - 20181113 IS - 0969-9961 (Print) IS - 1095-953X (Electronic) IS - 0969-9961 (Linking) VI - 25 IP - 1 DP - 2007 Jan TI - Successive neuron loss in the thalamus and cortex in a mouse model of infantile neuronal ceroid lipofuscinosis. PG - 150-62 AB - Infantile neuronal ceroid lipofuscinosis (INCL) is caused by deficiency of the lysosomal enzyme, palmitoyl protein thioesterase 1 (PPT1). We have investigated the onset and progression of pathological changes in Ppt1 deficient mice (Ppt1-/-) and the development of their seizure phenotype. Surprisingly, cortical atrophy and neuron loss occurred only late in disease progression but were preceded by localized astrocytosis within individual thalamic nuclei and the progressive loss of thalamic neurons that relay different sensory modalities to the cortex. This thalamic neuron loss occurred first within the visual system and only subsequently in auditory and somatosensory relay nuclei or the inhibitory reticular thalamic nucleus. The loss of granule neurons and GABAergic interneurons followed in each corresponding cortical region, before the onset of seizure activity. These findings provide novel evidence for successive neuron loss within the thalamus and cortex in Ppt1-/- mice, revealing the thalamus as an important early focus of INCL pathogenesis. FAU - Kielar, Catherine AU - Kielar C AD - Pediatric Storage Disorders Laboratory, Box P040, MRC Social Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, De Crespigny Park, King's College London, London, SE5 8AF, UK. FAU - Maddox, Lucy AU - Maddox L FAU - Bible, Ellen AU - Bible E FAU - Pontikis, Charlie C AU - Pontikis CC FAU - Macauley, Shannon L AU - Macauley SL FAU - Griffey, Megan A AU - Griffey MA FAU - Wong, Michael AU - Wong M FAU - Sands, Mark S AU - Sands MS FAU - Cooper, Jonathan D AU - Cooper JD LA - eng GR - R01 NS043205/NS/NINDS NIH HHS/United States GR - NS41930/NS/NINDS NIH HHS/United States GR - NS043205/NS/NINDS NIH HHS/United States GR - R21 NS041930/NS/NINDS NIH HHS/United States GR - R56 NS043205/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20061012 PL - United States TA - Neurobiol Dis JT - Neurobiology of disease JID - 9500169 RN - EC 3.1.2.- (Thiolester Hydrolases) RN - EC 3.1.2.22 (palmitoyl-protein thioesterase) SB - IM MH - Aging/pathology MH - Animals MH - Astrocytes/pathology MH - Atrophy/pathology MH - Cerebral Cortex/*pathology MH - Disease Models, Animal MH - Disease Progression MH - Electroencephalography MH - Gliosis/pathology MH - Interneurons/pathology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Microscopy, Fluorescence MH - Neuroglia/pathology MH - Neuronal Ceroid-Lipofuscinoses/*pathology MH - Neurons/*pathology MH - Phenotype MH - Seizures/etiology MH - Synapses/pathology MH - Thalamic Nuclei/pathology MH - Thalamus/*pathology MH - Thiolester Hydrolases/genetics/*physiology PMC - PMC1866219 MID - NIHMS14439 EDAT- 2006/10/19 09:00 MHDA- 2007/01/24 09:00 PMCR- 2008/02/03 CRDT- 2006/10/19 09:00 PHST- 2006/06/09 00:00 [received] PHST- 2006/08/29 00:00 [revised] PHST- 2006/09/03 00:00 [accepted] PHST- 2006/10/19 09:00 [pubmed] PHST- 2007/01/24 09:00 [medline] PHST- 2006/10/19 09:00 [entrez] PHST- 2008/02/03 00:00 [pmc-release] AID - S0969-9961(06)00221-X [pii] AID - 10.1016/j.nbd.2006.09.001 [doi] PST - ppublish SO - Neurobiol Dis. 2007 Jan;25(1):150-62. doi: 10.1016/j.nbd.2006.09.001. Epub 2006 Oct 12.