Ultrastructural study of florid plaques in variant Creutzfeldt–Jakob disease: a comparison with amyloid plaques in kuru, sporadic Creutzfeldt–Jakob disease and Gerstmann–Sträussler–Scheinker disease
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Background: Although the histological features of the amyloid plaques in variant Creutzfeldt–Jakob disease (vCJD) are distinct from those in other forms of prion disease [kuru, sporadic Creutzfeldt–Jakob disease (sCJD) and Gerstmann–Sträussler–Scheinker disease (GSS)], their ultrastructural features have only been described in a single case report. Aims: To study vCJD plaques systematically and compare them with plaques in kuru, sCJD, GSS and Alzheimer disease (AD). Methods: Amyloid plaques were studied by transmission electron microscopy and image analysis in five cases of vCJD, three cases of GSS, two cases of sCJD, one case of kuru and five cases of AD. Immunohistochemistry was performed on paraffin sections from one case of vCJD, two cases of GSS, one case of kuru and two cases of sCJD. Results: The florid plaques in vCJD were either compact or more diffuse; in both forms, the radiating fibrils were organized into thick ‘tongues’, in contrast to kuru plaques. Dystrophic neurites (DNs) containing lysosomal electron‐dense bodies or vesicles surrounded florid plaques. Microglial cells were found within florid plaques; occasional amyloid fibrils were identified in membrane‐bound pockets of microglial cells. In vCJD, there was significant tau immunoreactivity in DNs around florid plaques while, in sCJD, GSS and kuru, minimal tau immunoreactivity was observed around plaques. Conclusions: The ultrastructure of the florid plaques and DNs in vCJD is more reminiscent of neuritic plaques in AD than kuru or multicentric plaques. These findings may reflect differences both in the strains of the transmissible agents responsible for these disorders and in host factors.
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The most striking neuropathologic feature of kuru is the presence of numerous amyloid plaques, known as kuru plaques.
“The most striking neuropathologic feature of kuru is the presence of numerous amyloid plaques described as “spherical bodies with a rim of radiating filaments” and found in 6 of 12 cases studied by Klatzo et al (62) and in “about three quarters” of the 13 cases of Beck and Daniel (68); they then became known as “kuru plaques” (67, 69–71).”
From Kuru (2012) · cites this paper as [71]
The Introduction discusses kuru plaques, and the Results describe them as amyloid plaques with radiating fibrils. The paper does not establish that they are numerous in kuru or its most striking neuropathologic feature. The indexed passages provide section labels but no page numbers. (LLM, conf=0.83)
Experimental — accuracy not yet measuredThe fine structure of amyloid plaques from the "K" case corresponds to that described by light microscopy.
“The fine structure of plaques was surprisingly well preserved, and it corresponds to that described by light microscopy (71).”
From Kuru (2012) · cites this paper as [71]
The Introduction (page unavailable) says the authors compared plaques by light and electron microscopy and proposed that ultrastructural differences in vCJD are reflected in their light-microscopic appearance. The Methods confirm that they examined a kuru case, but the passages found do not say that the fine structure of plaques from the “K” case corresponded to its light-microscopic description or was surprisingly well preserved. (LLM, conf=0.73)
Experimental — accuracy not yet measuredIn our previous study on amyloid plaques in prion diseases, we demonstrated that kuru plaques morphologically and ultrastructurally resemble those characteristic of sporadic CJD subtype 3 according to the Parchi and Gambetti classification but are remarkably different from florid plaques in variant CJD and multicentric plaques in GSS.
“In our previous study on amyloid plaques encountered in prion diseases (71), we demonstrated that kuru plaques morphologically and ultrastructurally resemble those that are characteristic of sporadic CJD subtype 3 according to the Parchi and Gambetti classification (22) but were remarkably different from florid plaques in variant CJD and multicentric plaques in GSS.”
From Kuru (2012) · cites this paper as [71]
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Cites
Electron microscopic observations on the cerebellar cortex in Kuru
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Kuru, the First Human Prion Disease
Liberski, P. P., Gajos, A., Sikorska, B., & Lindenbaum, S. (2019) · Viruses · doi:10.3390/v11030232 · Cited by 69 · see citing works
Self-citationLiberski, P. P., Sikorska, B., Lindenbaum, S., Goldfarb, L. G., McLean, C., Hainfellner, J. A., & Brown, P. (2012) · Journal of Neuropathology & Experimental Neurology · doi:10.1097/nen.0b013e3182444efd · Cited by 50 · see citing works
Self-citation
- Authors
- Sikorska, B., Liberski, P. P., Sobów, T., Budka, H., & Ironside, J. W.
- Affiliations
- Medical University of Lodz (PL)
- Medical University of Vienna (AT)
- University of Edinburgh (GB)
- Corresponding author
- Ironside, J. W.
- Venue
- Neuropathology and Applied Neurobiology
- Publisher
- Wiley
- Published
- 2009-01-21
- Volume
- 35
- Issue
- 1
- Pages
- 46-59
- ISSN
- 0305-1846 (ISSN-L)
- 1365-2990
- OpenAlex
- W1979044678
- Cited by
- 72
- References
- 1
- Citations by year
- 2025: 2 · 2024: 2 · 2023: 4 · 2022: 3 · 2021: 6 · 2020: 4 · 2019: 3 · 2018: 2 · 2017: 7 · 2016: 5 · 2015: 4 · 2013: 7 · 2012: 8
- FWCI
- 2.06
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Neuropathology and Applied Neurobiology (publishedVersion)
- PubMed (publishedVersion)
- Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
- Funders
- Uniwersytet Łódzki
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Amyloidosis: Diagnosis, Treatment, Outcomes
- Keywords
- variant Creutzfeldt-Jakob disease, amyloid plaques, ultrastructure, kuru, sporadic Creutzfeldt-Jakob disease, Gerstmann-Sträussler-Scheinker disease, Alzheimer's disease, dystrophic neurites, microglia, prion disease
- MeSH terms
- Adolescent, Adult, Alzheimer Disease, Amyloid, Brain, Brain Chemistry, Female, Glial Fibrillary Acidic Protein, Gliosis, Humans, Creutzfeldt-Jakob Syndrome, Kuru, Male, Neurons, Endosomes, Gerstmann-Straussler-Scheinker Disease, tau Proteins, Microglia, Ubiquitin, Plaque, Amyloid
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