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Feline Foamy Virus
''Feline foamy virus'' or ''Feline syncytial virus'' (FeFV or FFV) is a retrovirus and belongs to the family ''Retroviridae'' and the subfamily ''Spumaretrovirinae''. It shares the genus '' Felispumavirus'' with only '' Puma feline foamy virus''. There has been controversy on whether FeFV is nonpathogenic as the virus is generally asymptomatic in affected cats and does not cause disease. However, some changes in kidney and lung tissue have been observed over time in cats affected with FeFV, which may or may not be directly affiliated. This virus is fairly common and infection rates gradually increase with a cat's age. Study results from antibody examinations and PCR analysis have shown that over 70% of felines over 9 years old were seropositive for ''Feline foamy virus''. Viral infections are similar between male and female domesticated cats whereas in the wild, more feral females cats are affected with FeFV. Structure and genome Spumaviruses are enveloped and spherical shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retrovirus
A retrovirus is a type of virus that inserts a DNA copy of its RNA genome into the DNA of a host cell that it invades, thus changing the genome of that cell. Once inside the host cell's cytoplasm, the virus uses its own reverse transcriptase enzyme to produce DNA from its RNA genome, the reverse of the usual pattern, thus ''retro'' (backwards). The new DNA is then incorporated into the host cell genome by an integrase enzyme, at which point the retroviral DNA is referred to as a provirus. The host cell then treats the viral DNA as part of its own genome, transcribing and translating the viral genes along with the cell's own genes, producing the proteins required to assemble new copies of the virus. Although retroviruses have different subfamilies, they have three basic groups: the oncoretroviruses (oncogenic retroviruses), the lentiviruses (slow retroviruses) and the spumaviruses (foamy viruses). The oncoretroviruses are able to cause cancer in some species, the lentiviru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retroviridae
A retrovirus is a type of virus that inserts a DNA copy of its RNA genome into the DNA of a host cell that it invades, thus changing the genome of that cell. Once inside the host cell's cytoplasm, the virus uses its own reverse transcriptase enzyme to produce DNA from its RNA genome, the reverse of the usual pattern, thus ''retro'' (backwards). The new DNA is then incorporated into the host cell genome by an integrase enzyme, at which point the retroviral DNA is referred to as a provirus. The host cell then treats the viral DNA as part of its own genome, transcribing and translating the viral genes along with the cell's own genes, producing the proteins required to assemble new copies of the virus. Although retroviruses have different subfamilies, they have three basic groups: the oncoretroviruses (oncogenic retroviruses), the lentiviruses (slow retroviruses) and the spumaviruses (foamy viruses). The oncoretroviruses are able to cause cancer in some species, the lentivirus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spumaretrovirinae
''Spumaretrovirinae'', commonly called spumaviruses (, Latin for "foam") or foamyviruses, is a subfamily of the ''Retroviridae'' family. ICTVMaster Species List 2018a v1MSL including all taxa updates since the 2017 release. Fall 2018 (MSL #33) Spumaviruses are exogenous viruses that have specific morphology with prominent surface spikes. The virions contain significant amounts of double-stranded full-length DNA, and assembly is rather unusual in these viruses. Spumaviruses are unlike most enveloped viruses in that the envelope membrane is acquired by budding through the endoplasmic reticulum instead of the cytoplasmic membrane. Some spumaviruses, including the equine foamy virus (EFV), bud from the cytoplasmic membrane. Some examples of these viruses are simian foamy virus and the human foamy virus Human foamy virus (HFV) is a retrovirus and specifically belongs to the genus ''Spumavirus''. The spumaviruses are complex and significantly different from the other six genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puma Feline Foamy Virus
Puma or PUMA may refer to: Animals * ''Puma'' (genus), a genus in the family Felidae ** Puma (species) or cougar, a large cat Businesses and organisations * Puma (brand), a multinational shoe and sportswear company * Puma Energy, a mid- and downstream oil company * People United Means Action, originally named "Party Unity My Ass", a political action committee during the 2008 U.S. presidential election Languages * Puma language, a language of Nepal * Teanu language or Puma, a language of the Solomon Islands People * Carlos Landín Martínez, El Puma, Mexican drug lord * José Luis Rodríguez (born 1943), El Puma, Venezuelan singer and actor * Puma King (born 1990), Puma, Mexican wrestler * Puma Swede (born 1976), Swedish pornographic actress * Ricochet (wrestler) (born 1988), Puma, American wrestler * T. J. Perkins (born 1984), Puma, American wrestler * Puma Jones member of Black Uhuru Places * Puma (village), Solomon Islands * Puma (Tanzanian ward) Sports * Pumas (Curr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spumavirus
''Spumaretrovirinae'', commonly called spumaviruses (, Latin for "foam") or foamyviruses, is a subfamily of the ''Retroviridae'' family. ICTVMaster Species List 2018a v1MSL including all taxa updates since the 2017 release. Fall 2018 (MSL #33) Spumaviruses are exogenous viruses that have specific morphology with prominent surface spikes. The virions contain significant amounts of double-stranded full-length DNA, and assembly is rather unusual in these viruses. Spumaviruses are unlike most enveloped viruses in that the envelope membrane is acquired by budding through the endoplasmic reticulum instead of the cytoplasmic membrane. Some spumaviruses, including the equine foamy virus (EFV), bud from the cytoplasmic membrane. Some examples of these viruses are simian foamy virus and the human foamy virus Human foamy virus (HFV) is a retrovirus and specifically belongs to the genus ''Spumavirus''. The spumaviruses are complex and significantly different from the other six genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retrovirus
A retrovirus is a type of virus that inserts a DNA copy of its RNA genome into the DNA of a host cell that it invades, thus changing the genome of that cell. Once inside the host cell's cytoplasm, the virus uses its own reverse transcriptase enzyme to produce DNA from its RNA genome, the reverse of the usual pattern, thus ''retro'' (backwards). The new DNA is then incorporated into the host cell genome by an integrase enzyme, at which point the retroviral DNA is referred to as a provirus. The host cell then treats the viral DNA as part of its own genome, transcribing and translating the viral genes along with the cell's own genes, producing the proteins required to assemble new copies of the virus. Although retroviruses have different subfamilies, they have three basic groups: the oncoretroviruses (oncogenic retroviruses), the lentiviruses (slow retroviruses) and the spumaviruses (foamy viruses). The oncoretroviruses are able to cause cancer in some species, the lentiviru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reverse Transcription
A reverse transcriptase (RT) is an enzyme used to generate complementary DNA (cDNA) from an RNA template, a process termed reverse transcription. Reverse transcriptases are used by viruses such as HIV and hepatitis B to replicate their genomes, by retrotransposon mobile genetic elements to proliferate within the host genome, and by eukaryotic cells to extend the telomeres at the ends of their linear chromosomes. Contrary to a widely held belief, the process does not violate the flows of genetic information as described by the classical central dogma, as transfers of information from RNA to DNA are explicitly held possible. Retroviral RT has three sequential biochemical activities: RNA-dependent DNA polymerase activity, ribonuclease H (RNase H), and DNA-dependent DNA polymerase activity. Collectively, these activities enable the enzyme to convert single-stranded RNA into double-stranded cDNA. In retroviruses and retrotransposons, this cDNA can then integrate into the host genom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hepadnaviridae
''Hepadnaviridae'' is a family of viruses. Humans, apes, and birds serve as natural hosts. There are currently 18 species in this family, divided among 5 genera. Its best-known member is hepatitis B virus. Diseases associated with this family include: liver infections, such as hepatitis, hepatocellular carcinomas (chronic infections), and cirrhosis. It is the sole accepted family in the order ''Blubervirales''. Taxonomy The following genera are recognized: * ''Avihepadnavirus'' * ''Orthohepadnavirus'' * '' Herpetohepadnavirus'' * '' Metahepadnavirus'' * '' Parahepadnavirus'' History and discovery Although liver diseases transmissible among human populations were identified early in the history of medicine, the first known hepatitis with a viral etiological agent was Hepatitis A, in the picornaviridae family. Hepatitis B Virus (HBV) was identified as an infection distinct from Hepatitis A through its contamination of measles, mumps, and yellow fever vaccines in the 1930s and 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapture Cats
The rapture is an eschatological position held by some Christians, particularly those of American evangelicalism, consisting of an end-time event when all Christian believers who are alive, along with resurrected believers, will rise "in the clouds, to meet the Lord in the air." The origin of the term extends from Paul the Apostle's First Epistle to the Thessalonians in the Bible, in which he uses the Greek word ( grc, ἁρπάζω), meaning "to snatch away" or "to seize," and explains that believers in Jesus Christ would be snatched away from earth into the air. The idea of a rapture as it is currently defined is not found in historic Christianity, and is a relatively recent doctrine. The term is used frequently among fundamentalist theologians in the United States. ''Rapture'' has also been used for a mystical union with God or for eternal life in Heaven. This view of eschatology is referred to as premillennial dispensationalism, which is a form of futurism. Differing vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feline Immunodeficiency Virus
Feline immunodeficiency virus (FIV) is a '' Lentivirus'' that affects cats worldwide, with 2.5% to 4.4% of felines being infected. FIV was first isolated in 1986, by Niels C Pedersen and Janet K. Yamamoto at the UC Davis School of Veterinary Medicine in a colony of cats that had a high prevalence of opportunistic infections and degenerative conditions and was originally called Feline T-lymphotropic virus. It has since been identified in domestic cats. It has been suggested FIV originated in Africa and has since spread to feline species worldwide. Effects FIV compromises the immune system of cats by infecting many cell types, including CD4+ and CD8+ T lymphocytes, B lymphocytes, and macrophages. FIV can be tolerated well by cats, but can eventually lead to debilitation of the immune system in its feline hosts by the infection and exhaustion of T-helper (CD4+) cells. FIV and HIV are both lentiviruses. However, humans cannot be infected by FIV, nor can cats be infected ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FIV Genome
Feline immunodeficiency virus (FIV) is a ''Lentivirus'' that affects cats worldwide, with 2.5% to 4.4% of felines being infected. FIV was first Isolation (microbiology), isolated in 1986, by Niels C Pedersen and Janet K. Yamamoto at the UC Davis School of Veterinary Medicine in a colony of cats that had a high prevalence of opportunistic infections and Degenerative disease, degenerative conditions and was originally called Feline T-lymphotropic virus. It has since been identified in Cat, domestic cats. It has been suggested FIV originated in Africa and has since spread to feline species worldwide. Effects FIV compromises the immune system of cats by infecting many cell types, including CD4+ T cell, CD4+ and Cytotoxic T cell, CD8+ T lymphocytes, B cell, B lymphocytes, and macrophages. FIV can be tolerated well by cats, but can eventually lead to debilitation of the immune system in its feline hosts by the infection and exhaustion of T-helper (CD4+) cells. FIV and HIV are both le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
