Primate T-lymphotropic virus
A group of viruses infecting primates
Primate T-lymphotropic viruses (PTLVs) are a group of retroviruses that infect primates, including humans. These viruses are part of the Deltaretrovirus genus and are closely related to the human T-lymphotropic viruses (HTLVs). PTLVs are known for their ability to infect T-lymphocytes, a type of white blood cell that plays a crucial role in the immune system.
Classification[edit | edit source]
PTLVs are classified into several types based on their genetic sequences and host range. The main types include:
- PTLV-1: Closely related to HTLV-1, this virus is found in both humans and non-human primates.
- PTLV-2: Related to HTLV-2, it is also found in humans and some primate species.
- PTLV-3: A more recently discovered type, related to HTLV-3.
- PTLV-4: Related to HTLV-4, this type has been identified in some primate species.
Transmission[edit | edit source]
PTLVs are primarily transmitted through blood, sexual contact, and from mother to child during breastfeeding. In non-human primates, transmission can occur through bites and other forms of close contact.
Pathogenesis[edit | edit source]
PTLVs can cause a range of diseases in their hosts. In humans, HTLV-1 is associated with adult T-cell leukemia/lymphoma (ATLL) and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). The pathogenic potential of PTLVs in non-human primates is less well understood, but they can cause similar lymphoproliferative disorders.
Evolution[edit | edit source]
PTLVs have co-evolved with their primate hosts over millions of years. The phylogenetic relationships among PTLVs and their hosts suggest multiple cross-species transmission events. This co-evolutionary history is reflected in the genetic diversity of the viruses.
Research[edit | edit source]
Research on PTLVs provides insights into the evolution of retroviruses and their interactions with the host immune system. Studies focus on understanding the mechanisms of viral transmission, pathogenesis, and the development of potential vaccines and treatments.
Related pages[edit | edit source]
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