Biomaterial Database

The effect of defective-interfering Semliki Forest virus on the histopathology of infection with virulent Semliki Forest virus in mice. 1982

C F Crouch, and A Mackenzie, and N J Dimmock

The majority of mice inoculated with a mixture of a lethal dose of virulent Semliki Forest virus (SFV) strain ts+ and defective-interfering (DI) SFV remained completely health, with virus infectivity levels in brain tissue reduced by 99.9%. The results of previous studies had suggested that these effects were primarily the result of the intrinsic interfering capacity of DI virus rather than of host defense responses. Because SFV strain ts+ and an avirulent strain of SFV have clearly distinguishable histopathologic effects in brain tissue, the capability of DI virus to change the virulent into the avirulent form of the disease was examined. Modulation of strain ts+ virus infection by DI virus was accompanied by a complete absence of histopathologic changes despite significant levels of infectious virus and thus differed qualitatively from infection with avirulent SFV. These results provide further evidence that the interference is not mediated through stimulation of an immune cell infiltration.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009336	Necrosis	The death of cells in an organ or tissue due to disease, injury or failure of the blood supply.
D009457	Neuroglia	The non-neuronal cells of the nervous system. They not only provide physical support, but also respond to injury, regulate the ionic and chemical composition of the extracellular milieu, participate in the BLOOD-BRAIN BARRIER and BLOOD-RETINAL BARRIER, form the myelin insulation of nervous pathways, guide neuronal migration during development, and exchange metabolites with neurons. Neuroglia have high-affinity transmitter uptake systems, voltage-dependent and transmitter-gated ion channels, and can release transmitters, but their role in signaling (as in many other functions) is unclear.	Bergmann Glia,Bergmann Glia Cells,Bergmann Glial Cells,Glia,Glia Cells,Satellite Glia,Satellite Glia Cells,Satellite Glial Cells,Glial Cells,Neuroglial Cells,Bergmann Glia Cell,Bergmann Glial Cell,Cell, Bergmann Glia,Cell, Bergmann Glial,Cell, Glia,Cell, Glial,Cell, Neuroglial,Cell, Satellite Glia,Cell, Satellite Glial,Glia Cell,Glia Cell, Bergmann,Glia Cell, Satellite,Glia, Bergmann,Glia, Satellite,Glial Cell,Glial Cell, Bergmann,Glial Cell, Satellite,Glias,Neuroglial Cell,Neuroglias,Satellite Glia Cell,Satellite Glial Cell,Satellite Glias
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
D003673	Defective Viruses	Viruses which lack a complete genome so that they cannot completely replicate or cannot form a protein coat. Some are host-dependent defectives, meaning they can replicate only in cell systems which provide the particular genetic function which they lack. Others, called SATELLITE VIRUSES, are able to replicate only when their genetic defect is complemented by a helper virus.	Incomplete Viruses,Defective Hybrids,Defective Hybrid,Defective Virus,Hybrid, Defective,Hybrids, Defective,Incomplete Virus,Virus, Defective,Virus, Incomplete,Viruses, Defective,Viruses, Incomplete
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
D012672	Semliki forest virus	A species of ALPHAVIRUS isolated in central, eastern, and southern Africa.
D013116	Spinal Cord	A cylindrical column of tissue that lies within the vertebral canal. It is composed of WHITE MATTER and GRAY MATTER.	Coccygeal Cord,Conus Medullaris,Conus Terminalis,Lumbar Cord,Medulla Spinalis,Myelon,Sacral Cord,Thoracic Cord,Coccygeal Cords,Conus Medullari,Conus Terminali,Cord, Coccygeal,Cord, Lumbar,Cord, Sacral,Cord, Spinal,Cord, Thoracic,Cords, Coccygeal,Cords, Lumbar,Cords, Sacral,Cords, Spinal,Cords, Thoracic,Lumbar Cords,Medulla Spinali,Medullari, Conus,Medullaris, Conus,Myelons,Sacral Cords,Spinal Cords,Spinali, Medulla,Spinalis, Medulla,Terminali, Conus,Terminalis, Conus,Thoracic Cords
D014036	Togaviridae Infections	Virus diseases caused by the TOGAVIRIDAE.	Togavirus Infections,Infections, Togaviridae,Infections, Togavirus,Togaviridae Disease,Disease, Togaviridae,Diseases, Togaviridae,Infection, Togaviridae,Infection, Togavirus,Togaviridae Diseases,Togaviridae Infection,Togavirus Infection
D014762	Viral Interference	A phenomenon in which infection by a first virus results in resistance of cells or tissues to infection by a second, unrelated virus.	Interference, Viral,Interferences, Viral,Viral Interferences