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New aspects of the pathology of neurodegenerative disorders as revealed by ubiquitin antibodies (1989)

Leigh, P. N. ; Probst, A. ; Dale, G. E. ; [et al.]

Springer

Acta neuropathologica 79 (1989), S. 61-72

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ISSN: 1432-0533

Keywords: Lewy bodies ; Pale bodies ; Neurofibrillary tangles ; Pick bodies ; Globose tangles ; Ubiquitin ; Antibodies ; Immunocytochemistry ; Alzheimer's disease ; Parkinson's disease ; Pick's disease ; Progressive supranuclear palsy

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary Ubiquitin has previously been identified as a component of neuronal inclusions in neurodegenerative disorders. In this investigation, we examined tissue from cases of Alzheimer's disease (AD), Pick's discase, Parkinson's disease (PD), and progressive supranuclear palsy (PSP) to identify previously unrecognized ubiquitinated structures and to assess the evolution of neuronal inclusions. In AD, approximately 60% of neurofibrillary tangles (NFTs) that were stained with an anti-paired helical filaments (PHF) serum were identified by the ubiquitin antibodies. Extracellular NFTs were not labelled with anti-PHF but were unlabelled or weakly labelled with anti-ubiquitin antibodies. In Pick's disease, most Pick bodies were strongly labelled by the ubiquitin antibodies, and in addition some hippocampal CA1 neurones contained granular or strand-like ubiquitin-immunoreactive (IR) inclusions associated with more typical Pick bodies. Typical Lewy bodies in PD cases showed an unlabelled central core with an outer ring intensely labelled by ubiquitin antibodies. Pale bodies in pigmented substantia nigra neurones appeared as large well-defined, rounded structures without an identifiable core or peripheral zone. Some pale bodies were unlabelled by ubiquitin antibodies, but others showed labelling of variable intensity. Pale bodies which were labelled by ubiquitin antibodies tended also to be labelled by BF10, a monoclonal antibody against phosphorylated neurofilaments. We suggest that pale bodies in PD may represent stages in the formation of Lewy bodies. In addition, we observed numerous spindle-shaped ubiquitin-IR swellings of dendrites of pigmented substantia nigra neurones. In contrast to inclusions of AD and Pick's disease, the PHF-positive fibrillary neuronal inclusions of PSP were either unlabelled or only weakly labelled by ubiquitin antibodies. No ubiquitinated structures were seen in neurones from corresponding areas in aged controls. Identification of ubiquitinated proteins in neurodegenerative disorders may provide insights into molecular events associated with cell death.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00308959

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Monoclonal antibodies against plant proteins recognise animal intermediate filaments (1987)

Parke, J. M. ; Miller, C. C. J. ; Cowell, I. ; [et al.]

New York, NY : Wiley-Blackwell

Cell Motility and the Cytoskeleton 8 (1987), S. 312-323

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ISSN: 0886-1544

Keywords: plant cytoskeleton ; Chlamydomonas ; anti-IFA ; onion root tip cells ; immunoflurescence ; Life and Medical Sciences ; Cell & Developmental Biology

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology , Medicine

Notes: Four monoclonal antibodies were raised against polypetides present in a highsalt detergent-insoluble fraction from cells of Chlamydomonas reinhardtii. Indirect immunofluorescence microscopy of fibroblasts and epithelial cells grown in culture using these plant antibodies revealed staining arrays identical to those obtained with well characterised antibodies to animal intermediate filaments. Immunoflurescence microscopy of Chlamydomonas with these monoclonal antibodies and a monoclonal antibody that recognises all animal intermediate filaments (anti-IFA) gave a diffuse, patchy cytoplasmic staining pattern. Both the plant antibodies and anti-IFA stained interphase onion root tip cells in a diffuse perinuclear pattern. In metaphase through to telophase, the labelling patterns colocalised with those of microtubules. Labelling of the phragmoplast was also detected but not staining of the preprophase band. On Western blots of various animal cell lines and tissues, all the antibodies labelled known intermediate filament proteins. On Western blots of whole Chlamydomonas proteins, all the antiboides labelled a broad band in the 57,000 Mr range, and three antibodies labelled bands around 66,000 and 140,000 Mr but with varibale intensites. On Western blots of whole onion root tip proteins, all the antibodies labelled 50,0000 Mr (two to three bands) polypetides and a diffuse and around 60,000 Mr and three of the antibodies also labelled several polypeptides in the 90,000-200,000 Mr range. The consistent labelling of these different bands by several different monoclonal antibodies recognising animal intermediate filaments makes these polypetides putative plant intermediate filament proteins.

Additional Material: 5 Ill.