{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T13:04:11Z","timestamp":1791291851348,"version":"4.1.0"},"reference-count":51,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2004,8,17]],"date-time":"2004-08-17T00:00:00Z","timestamp":1092700800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neuropathology Appl Neurobio"],"published-print":{"date-parts":[[2005,2]]},"abstract":"<jats:p>We report here a detailed ultrastructural comparison of brain biopsies from 13 cases of Creutzfeldt\u2010Jakob disease (CJD) and from one case of fatal familial insomnia (FFI). The latter disease has not heretofore benefited from ultrastructural study. In particular, we searched for tubulovesicular structures (TVS), 35\u2010nm particles regarded as the only disease\u2010specific structures at the level of thin\u2010section electron microscopy. Our material consisted of brain biopsies obtained by open surgery from one FFI case from a new French family, one case of variant CJD (vCJD), nine cases of sporadic CJD (sCJD), two cases of iatrogenic (human growth hormone) CJD and one case of hereditary CJD (Val203Iso). The ultrastructural picture of the cerebral cortex of the FFI patient was virtually indistinguishable from that of CJD. TVS were found, albeit only after prolonged search. Typical spongiform change was observed, consisting of intracellular membrane\u2010bound vacuoles containing secondary chambers (vacuoles within vacuoles) and amorphous material. Neuronal degeneration was widespread: some processes contained degenerating mitochondria and lysosomal electron\u2010dense bodies and these met the criteria for neuroaxonal dystrophy. Other processes contained branching cisterns; still others were filled with electron\u2010dense masses and amorphous vesicles. The overall ultrastructural appearance of variant CJD was similar to that of FFI cerebral cortex, except for a much higher number of cellular processes containing TVS. We detected TVS in the majority of sCJD cases that, in addition to typical spongiform change and robust astrocytic reaction, showed widespread neuritic and synaptic degeneration and autophagic vacuoles. We conclude that TVS are readily found in FFI, vCJD and sCJD and that widespread neuritic degeneration is a part of ultrastructural pathology in prion diseases.<\/jats:p>","DOI":"10.1111\/j.1365-2990.2004.00595.x","type":"journal-article","created":{"date-parts":[[2005,1,4]],"date-time":"2005-01-04T11:38:05Z","timestamp":1104838685000},"page":"88-96","source":"Crossref","is-referenced-by-count":32,"title":["Ultrastructural pathology of prion diseases revisited: brain biopsy studies"],"prefix":"10.1111","volume":"31","author":[{"given":"P. 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