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Alzheimer's disease (AD) and frontotemporal dementia (FTD) are two prevalent neurodegenerative disorders for which the causes are unknown, except in rare familial cases. Several changes in neuropeptide levels as measured by radioimmunoassay (RIA) have been observed in these illnesses. Somatostatin (SOM) levels in cerebrospinal fluid (CSF) are consistently decreased in AD and FTD. Neuropeptide Y (NPY)...
In clinical neuroscience as well as in many other clinical disciplines, the completion of the human genome project offers a new possibility to identify and localize the products of the genes, the proteins. Nuclear proteins are synthesized in the cytoplasm and imported into the nucleus by multiple pathways. The mechanisms by which nuclear accumulation of different molecular species occur are unclear...
We investigated whether cytoplasmic or nuclear extracts of human peripheral blood lymphocytes contain AVP in samples from healthy controls and patients diagnosed as depressed or schizophrenic. Both the cytoplasmic and nuclear extracts contained AVP as determined by radioimmunoassay. AVP and other peptides were detected in the purified samples by matrix-assisted laser desorption/ionization time of...
The processing of four neuropeptides, neuropeptide Y (NPY) 1-36, NPY (18-36), somatostatin (SOM) 1-28, and SOM (15-28) was studied in human cerebrospinal fluid (CSF) by using a novel combination of methods that included radioimmunoassay (RIA) and mass spectrometry. Untreated CSF samples were chromatographed using reversed-phase high pressure liquid chromatography (RP-HPLC) followed by NPY-RIA or SOM-RIA...
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