Biomaterial Database

Ultrastructural findings in experimental Creutzfeldt-Jakob disease in guinea pigs. 1983

J H Kim, and E E Manuelidis

Brains from six clinically ill guinea pigs from various serial passages infected with brain homogenate from a patient with Creutzfeldt-Jakob disease were studied by light and electron microscopy. There were no appreciable morphologic differences among the animals at different passages. Light microscopy revealed clearing, swelling, and vacuolar changes in neurons and astrocytes. These changes occurred in both perikarya and cell processes. Large isolated vacuoles in the neuropil appeared to develop by progressive fusion between swollen cellular processes. By electron microscopy many neuronal processes contained degenerating organelles, osmiophilic bodies, membranous bodies and approximately 10 mm filamentous structures. In addition, vacuoles and membranous inclusions were seen in some neuronal nuclei, changes which have not been previously observed in spongiform encephalopathies.

UI	MeSH Term	Description	Entries
D007562	Creutzfeldt-Jakob Syndrome	A rare transmissible encephalopathy most prevalent between the ages of 50 and 70 years. Affected individuals may present with sleep disturbances, personality changes, ATAXIA; APHASIA, visual loss, weakness, muscle atrophy, MYOCLONUS, progressive dementia, and death within one year of disease onset. A familial form exhibiting autosomal dominant inheritance and a new variant CJD (potentially associated with ENCEPHALOPATHY, BOVINE SPONGIFORM) have been described. Pathological features include prominent cerebellar and cerebral cortical spongiform degeneration and the presence of PRIONS. (From N Engl J Med, 1998 Dec 31;339(27))	New Variant Creutzfeldt-Jakob Disease,Spongiform Encephalopathy, Subacute,CJD (Creutzfeldt-Jakob Disease),Creutzfeldt Jacob Disease,Creutzfeldt-Jakob Disease,Creutzfeldt-Jakob Disease, Familial,Creutzfeldt-Jakob Disease, New Variant,Creutzfeldt-Jakob Disease, Variant,Familial Creutzfeldt-Jakob Disease,Jakob-Creutzfeldt Disease,Jakob-Creutzfeldt Syndrome,V-CJD (Variant-Creutzfeldt-Jakob Disease),Variant Creutzfeldt-Jakob Disease,CJD (Creutzfeldt Jakob Disease),Creutzfeldt Jakob Disease,Creutzfeldt Jakob Disease, Familial,Creutzfeldt Jakob Disease, New Variant,Creutzfeldt Jakob Disease, Variant,Creutzfeldt Jakob Syndrome,Creutzfeldt-Jakob Diseases, Familial,Disease, Creutzfeldt Jacob,Disease, Creutzfeldt-Jakob,Disease, Familial Creutzfeldt-Jakob,Disease, Jakob-Creutzfeldt,Encephalopathies, Subacute Spongiform,Encephalopathy, Subacute Spongiform,Familial Creutzfeldt Jakob Disease,Familial Creutzfeldt-Jakob Diseases,Jacob Disease, Creutzfeldt,Jakob Creutzfeldt Disease,Jakob Creutzfeldt Syndrome,New Variant Creutzfeldt Jakob Disease,Spongiform Encephalopathies, Subacute,Subacute Spongiform Encephalopathies,Subacute Spongiform Encephalopathy,Syndrome, Creutzfeldt-Jakob,Syndrome, Jakob-Creutzfeldt,V CJD (Variant Creutzfeldt Jakob Disease),Variant Creutzfeldt Jakob Disease
D008854	Microscopy, Electron	Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.	Electron Microscopy
D009474	Neurons	The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.	Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D001921	Brain	The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.	Encephalon
D004195	Disease Models, Animal	Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases.	Animal Disease Model,Animal Disease Models,Disease Model, Animal
D006168	Guinea Pigs	A common name used for the genus Cavia. The most common species is Cavia porcellus which is the domesticated guinea pig used for pets and biomedical research.	Cavia,Cavia porcellus,Guinea Pig,Pig, Guinea,Pigs, Guinea
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia