Human T-lymphotropic virus 2

Human T-lymphotropic virus 2
SpecialtyInfectious diseases
SymptomsMild cognitive Impairment, Mycosis fungoides
DurationChronic, incurable
CausesHTLV-2
Risk factorsUnsafe sex, haemophiliacs
Diagnostic methodBlood test
Differential diagnosisHIV/AIDS, Lymphoma, HTLV-1
PreventionPracticing safe-sex, use of clean needles, screening blood transfusions, Avoiding breastfeeding.
MedicationAntiretrovirals, chemotherapy
Prognosis95% present with no symptoms, generally good
Frequency15-20 million people worldwide
Primate T-lymphotropic virus 2
Virus classification Edit this classification
(unranked): Virus
Realm: Riboviria
Kingdom: Pararnavirae
Phylum: Artverviricota
Class: Revtraviricetes
Order: Ortervirales
Family: Retroviridae
Genus: Deltaretrovirus
Species:
Primate T-lymphotropic virus 2

A virus closely related to HTLV-I, human T-lymphotropic virus 2 (HTLV-II) shares approximately 70% genomic homology (structural similarity) with HTLV-I. It was discovered by Robert Gallo and colleagues.[1][2]

HTLV-2 is prevalent among the indigenous populations in Africa and the Indian-American tribes in Central and South America as well as among drug users in Europe and North America[3] It can be passed down from mother to child through breastmilk and genetically as well from either parent.

HTLV-II entry in target cells is mediated by the glucose transporter GLUT1.[4]

A phylogeny of the subtypes of HTLV and their relationships between endogenous and exogenous retroviruses in the human genome. HERV = human endogenous retrovirus, SFV = simian foamy virus
  1. ^ Geskin, Larisa J.; Pomerantz, Rebecca G.; Mirvish, Ezra D. (2011-02-01). "Infectious agents in cutaneous T-cell lymphoma". Journal of the American Academy of Dermatology. 64 (2): 423–431. doi:10.1016/j.jaad.2009.11.692. ISSN 0190-9622. PMC 3954537. PMID 20692726.
  2. ^ "Robert gallo discovers htlv2 and 1". Retrieved 23 February 2019.
  3. ^ Ciminale, Vincenzo; Rende, Francesca; Bertazzoni, Umberto; Romanelli, Maria G. (2014-07-29). "HTLV-1 and HTLV-2: highly similar viruses with distinct oncogenic properties". Frontiers in Microbiology. 5: 398. doi:10.3389/fmicb.2014.00398. ISSN 1664-302X. PMC 4114287. PMID 25120538.
  4. ^ Manel N, Kim FJ, Kinet S, Taylor N, Sitbon M, Battini JL (November 2003). "The ubiquitous glucose transporter GLUT-1 is a receptor for HTLV". Cell. 115 (4): 449–59. doi:10.1016/S0092-8674(03)00881-X. PMID 14622599.