Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P20366 (substance P)
 21,176 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

gamma-Aminobutyric acid (GABA), substance P and dopamine concentrations and choline acetyltransferase (ChAT) activity were measured in post-mortem cerebrocortical and basal ganglial areas of 14 controls and 4 patients with pathologically verified Pick's disease (1 classic case and 3 cases of the generalized form). GABA and substance P levels in the substantia nigra and the globus pallidus were generally decreased, corresponding to the moderate to severe loss of small neurones in the striatum. ChAT activities in the striatum varied from case to case, in proportion to various degrees of loss of large neurones in the striatum. These neurotransmitter abnormalities in Pick's disease were exactly the same as those in Huntington's disease. However, dopamine concentrations were markedly reduced in the striatum in Pick's disease, whereas striatal dopamine in Huntington's disease is reported to be increased. A dopamine reduction in the striatum of Pick's disease was more disproportionately prominent than expected for various degrees of nigral cell loss. This may be one of the important factors which prevents the generation of choreic movements in Pick's disease in spite of definite striatal atrophy similar to Huntington's disease.
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PMID:Studies on neurotransmitter markers of the basal ganglia in Pick's disease, with special reference to dopamine reduction. 245 Jan 80

Swollen, bulbous-shaped (dystrophic) neurites are a common pathologic feature of Alzheimer's disease (AD) and represent one of the most abundant neuritic abnormalities within the brains of patients with this disease. In the present study, we sought to determine whether the dystrophic neurites which are observed in association with senile plaques are unique to AD or whether they are characteristic of a more generalized process of neuritic and/or neuronal degeneration which can be observed in other neurodegenerative diseases. To accomplish this, we examined post-mortem brain material from patients with AD, Parkinson's disease (PD), Parkinson's disease with associated AD, Parkinson's disease with dementia yet without AD pathology, Huntington's disease (HD), Pick's disease and normal age-matched controls (NC). Using a battery of antibodies to amyloid beta-protein (A beta P), paired-helical filaments (PHF), tyrosine hydroxylase, substance P, neurotensin, and somatostatin we found that immunolabeled dystrophic neurites of the type characteristically observed in AD, were seen only in cases and in brain regions where A beta P deposition was present. More specifically, brain areas known to display severe afferent and/or local degenerative changes such as the caudate and putamen in all three PD groups, the caudate in the HD cases, and the temporal cortex in the HD and Pick's cases were conspicuously free of these swollen neurites unless A beta P deposition was also present.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Alzheimer's disease-like dystrophic neurites characteristically associated with senile plaques are not found within other neurodegenerative diseases unless amyloid beta-protein deposition is present. 809 26