Insulin-like growth factor-I improves cerebellar dysfunction but does not prevent cerebellar neurodegeneration in the calcium channel mutant mouse, leaner. 2003

Sang-Soep Nahm, and Tamy C Frank, and Michelle D Browning, and Jarita M Sepulvado, and Jill K Hiney, and Louise C Abbott
Department of Veterinary Anatomy & Public Health, College of Veterinary Medicine, Texas A&M University, College Station, TX 77843-4458, USA.

The effects of insulin-like growth factor-I (IGF-I) on cerebellar dysfunction and neurodegeneration were investigated in leaner mice, which exhibit cerebellar ataxia and neurodegeneration related to P/Q-type calcium channel mutations. Leaner mice showed significantly reduced serum and cerebellar IGF-I concentrations compared to wild-type mice at postnatal day 30. Behavioral assessment of leaner mice injected with IGF-I subcutaneously for 4 weeks showed partially improved cerebellar function. Histological analysis of IGF-I treated leaner cerebella showed no difference in the number of dying Purkinje cells compared to control leaner cerebella. These results further support potential use of IGF-I as a therapeutic aid for cerebellar ataxia related to calcium channel mutations. Nonetheless, IGF-I administration does not rescue dying cerebellar neurons, which suggests that the beneficial effects of IGF-I may have been achieved through surviving cerebellar neurons.

UI MeSH Term Description Entries
D007334 Insulin-Like Growth Factor I A well-characterized basic peptide believed to be secreted by the liver and to circulate in the blood. It has growth-regulating, insulin-like, and mitogenic activities. This growth factor has a major, but not absolute, dependence on GROWTH HORMONE. It is believed to be mainly active in adults in contrast to INSULIN-LIKE GROWTH FACTOR II, which is a major fetal growth factor. IGF-I,Somatomedin C,IGF-1,IGF-I-SmC,Insulin Like Growth Factor I,Insulin-Like Somatomedin Peptide I,Insulin Like Somatomedin Peptide I
D008297 Male Males
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D008818 Mice, Neurologic Mutants Mice which carry mutant genes for neurologic defects or abnormalities. Lurcher Mice,Nervous Mice,Reeler Mice,Staggerer Mice,Weaver Mice,Chakragati Mice,Chakragati Mouse,Lurcher Mouse,Mice, Neurological Mutants,Mouse, Neurologic Mutant,Mouse, Neurological Mutant,Nervous Mouse,Neurologic Mutant Mice,Neurological Mutant Mouse,Reeler Mouse,Staggerer Mouse,Weaver Mouse,ckr Mutant Mice,Mice, Chakragati,Mice, Lurcher,Mice, Nervous,Mice, Neurologic Mutant,Mice, Reeler,Mice, Staggerer,Mice, Weaver,Mice, ckr Mutant,Mouse, Chakragati,Mouse, Lurcher,Mouse, Nervous,Mouse, Reeler,Mouse, Staggerer,Mouse, Weaver,Mutant Mice, Neurologic,Mutant Mice, ckr,Mutant Mouse, Neurologic,Neurologic Mutant Mouse
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D009410 Nerve Degeneration Loss of functional activity and trophic degeneration of nerve axons and their terminal arborizations following the destruction of their cells of origin or interruption of their continuity with these cells. The pathology is characteristic of neurodegenerative diseases. Often the process of nerve degeneration is studied in research on neuroanatomical localization and correlation of the neurophysiology of neural pathways. Neuron Degeneration,Degeneration, Nerve,Degeneration, Neuron,Degenerations, Nerve,Degenerations, Neuron,Nerve Degenerations,Neuron Degenerations
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013132 Spinocerebellar Degenerations A heterogenous group of degenerative syndromes marked by progressive cerebellar dysfunction either in isolation or combined with other neurologic manifestations. Sporadic and inherited subtypes occur. Inheritance patterns include autosomal dominant, autosomal recessive, and X-linked. Ataxias, Hereditary,Cerebellar Ataxia, Early Onset,Cerebellar Ataxia, Late Onset,Cerebellar Degenerations, Primary,Corticostriatal-Spinal Degeneration,Marie Cerebellar Ataxia,Marinesco-Sjogren Syndrome,Spinocerebellar Degeneration,Early Onset Cerebellar Ataxia,Familial Spinocerebellar Degenerations,Garland-Moorhouse Syndrome,Hereditary Oligophrenic Cerebello-Lental Degeneration,Hereditary Spinocerebellar Degenerations,Inherited Spinocerebellar Degenerations,Late Onset Cerebellar Ataxia,Marie's Cerebellar Ataxia,Marinesco-Garland Syndrome,Marinesco-Sjogren Syndrome-Hypergonadotrophic Hypogonadism,Marinesco-Sjogren Syndrome-Myopathy,Marinesco-Sjogren-Garland Syndrome,Marinesco-Sjögren Syndrome,Spino Cerebellar Degenerations,Spino-Cerebellar Degenerations,Spinocerebellar Diseases,Ataxia, Hereditary,Cerebellar Ataxia, Marie,Cerebellar Ataxia, Marie's,Cerebellar Degeneration, Primary,Corticostriatal Spinal Degeneration,Corticostriatal-Spinal Degenerations,Degeneration, Corticostriatal-Spinal,Degeneration, Familial Spinocerebellar,Degeneration, Hereditary Spinocerebellar,Degeneration, Inherited Spinocerebellar,Degeneration, Primary Cerebellar,Degeneration, Spino Cerebellar,Degeneration, Spino-Cerebellar,Degeneration, Spinocerebellar,Degenerations, Corticostriatal-Spinal,Degenerations, Familial Spinocerebellar,Degenerations, Hereditary Spinocerebellar,Degenerations, Inherited Spinocerebellar,Degenerations, Primary Cerebellar,Degenerations, Spino Cerebellar,Degenerations, Spinocerebellar,Familial Spinocerebellar Degeneration,Garland Moorhouse Syndrome,Hereditary Ataxia,Hereditary Ataxias,Hereditary Oligophrenic Cerebello Lental Degeneration,Hereditary Spinocerebellar Degeneration,Hypogonadism, Marinesco-Sjogren Syndrome-Hypergonadotrophic,Inherited Spinocerebellar Degeneration,Marinesco Garland Syndrome,Marinesco Sjogren Garland Syndrome,Marinesco Sjogren Syndrome,Marinesco Sjogren Syndrome Hypergonadotrophic Hypogonadism,Marinesco Sjogren Syndrome Myopathy,Marinesco Sjögren Syndrome,Primary Cerebellar Degeneration,Primary Cerebellar Degenerations,Spino Cerebellar Degeneration,Spino-Cerebellar Degeneration,Spinocerebellar Degeneration, Familial,Spinocerebellar Degeneration, Hereditary,Spinocerebellar Degeneration, Inherited,Spinocerebellar Degenerations, Familial,Spinocerebellar Degenerations, Hereditary,Spinocerebellar Degenerations, Inherited,Spinocerebellar Disease,Syndrome, Garland-Moorhouse,Syndrome, Marinesco-Garland,Syndrome, Marinesco-Sjogren,Syndrome, Marinesco-Sjogren-Garland,Syndrome, Marinesco-Sjögren,Syndrome-Hypergonadotrophic Hypogonadism, Marinesco-Sjogren,Syndrome-Myopathy, Marinesco-Sjogren
D015220 Calcium Channels Voltage-dependent cell membrane glycoproteins selectively permeable to calcium ions. They are categorized as L-, T-, N-, P-, Q-, and R-types based on the activation and inactivation kinetics, ion specificity, and sensitivity to drugs and toxins. The L- and T-types are present throughout the cardiovascular and central nervous systems and the N-, P-, Q-, & R-types are located in neuronal tissue. Ion Channels, Calcium,Receptors, Calcium Channel Blocker,Voltage-Dependent Calcium Channel,Calcium Channel,Calcium Channel Antagonist Receptor,Calcium Channel Antagonist Receptors,Calcium Channel Blocker Receptor,Calcium Channel Blocker Receptors,Ion Channel, Calcium,Receptors, Calcium Channel Antagonist,VDCC,Voltage-Dependent Calcium Channels,Calcium Channel, Voltage-Dependent,Calcium Channels, Voltage-Dependent,Calcium Ion Channel,Calcium Ion Channels,Channel, Voltage-Dependent Calcium,Channels, Voltage-Dependent Calcium,Voltage Dependent Calcium Channel,Voltage Dependent Calcium Channels

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