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HTLV Myelopathy

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https://www.readbyqxmd.com/read/29318453/sensory-neuronopathy-heralding-human-t-cell-lymphotropic-virus-type-i-myelopathy
#1
Alberto R M Martinez, Raphael F Casseb, Carlos R Martins, Anamarli Nucci, Marcondes C França
Neurological phenotypes of human T cell lymphotropic virus type I (HTLV-1) are numerous and rarely may not manifest the classic HTLV-associated myelopathy/tropical spastic paraparesis (HAM/TSP). We report a case of HTLV-1-related sensory neuronopathy heralding the classic HAM/TSP.
January 9, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/29281735/correction-ct-chest-and-pulmonary-functional-changes-in-patients-with-htlv-associated-myelopathy-in-the-eastern-brazilian-amazon
#2
Luiz Fábio Magno Falcão, Aline Semblano Carreira Falcão, Rita Catarina Medeiros Sousa, Waldônio de Brito Vieira, Robson Tadachi Moraes de Oliveira, Valéria Marques Ferreira Normando, George Alberto da Silva Dias, Marcio Clementino de Souza Santos, Rodrigo Santiago Barbosa Rocha, Gilberto Toshimitsu Yoshikawa, Roberta Vilela Lopes Koyama, Satomi Fujihara, Víctor Augusto Cavaleiro Corrêa, Hellen Thais Fuzii, Juarez Antônio Simões Quaresma
[This corrects the article DOI: 10.1371/journal.pone.0186055.].
2017: PloS One
https://www.readbyqxmd.com/read/29227540/human-t-lymphotropic-virus-1-htlv-1-pathogenesis-a-systems-virology-study
#3
Sayed-Hamidreza Mozhgani, Mohadeseh Zarei Ghobadi, Majid Teymoori-Rad, Talat Mokhtari Azad, Mehdi Mirzaie, Mohsen Sheikhi, Seyed Mohammad Jazayeri, Ramin Shabahrami, Hedayatollah Ghourchian, Mohieddin Jafari, Seyed Abdolrahim Rezaee, Mehdi Norouzi
The main mechanisms of interaction between Human T-lymphotropic virus type 1 (HTLV-1) and its hosts in manifestation of related diseases including HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP) and Adult T-cell leukemia/lymphoma (ATLL) are yet to be determined. It is pivotal to find out the changes in the genes expression toward an asymptomatic or symptomatic states. To this end, the systems virology analysis was performed. Firstly, the differentially expressed genes (DEGs) were taken pairwise among the four sample sets of Normal, Asymptomatic Carriers (ACs), ATLL, and HAM/TSP...
December 11, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29202792/the-cc-chemokine-ligand-ccl-1-upregulated-by-the-viral-transactivator-tax-can-be-downregulated-by-minocycline-possible-implications-for-long-term-treatment-of-htlv-1-associated-myelopathy-tropical-spastic-paraparesis
#4
Mineki Saito, Hiroe Sejima, Tadasuke Naito, Hiroshi Ushirogawa, Toshio Matsuzaki, Eiji Matsuura, Yuetsu Tanaka, Tatsufumi Nakamura, Hiroshi Takashima
BACKGROUND: Chemokine (C-C motif) ligand 1 (CCL1) is produced by activated monocytes/ macrophages and T-lymphocytes, and acts as a potent attractant for Th2 cells and a subset of T-regulatory (Treg) cells. Previous reports have indicated that CCL1 is overexpressed in adult T-cell leukemia cells, mediating an autocrine anti-apoptotic loop. Because CCL1 is also known as a potent chemoattractant that plays a major role in inflammatory processes, we investigated the role of CCL1 in the pathogenesis of human T-cell leukemia virus type 1 (HTLV-1)-associated myelopathy/tropical spastic paraparesis (HAM/TSP)...
December 4, 2017: Virology Journal
https://www.readbyqxmd.com/read/29186194/human-t-cell-leukemia-virus-type-1-infects-multiple-lineage-hematopoietic-cells-in-vivo
#5
Rie Furuta, Jun-Ichirou Yasunaga, Michi Miura, Kenji Sugata, Akatsuki Saito, Hirofumi Akari, Takaharu Ueno, Norihiro Takenouchi, Jun-Ichi Fujisawa, Ki-Ryang Koh, Yusuke Higuchi, Mohamed Mahgoub, Masakazu Shimizu, Fumihiko Matsuda, Anat Melamed, Charles R Bangham, Masao Matsuoka
Human T-cell leukemia virus type 1 (HTLV-1) infects mainly CD4+CCR4+ effector/memory T cells in vivo. However, it remains unknown whether HTLV-1 preferentially infects these T cells or this virus converts infected precursor cells to specialized T cells. Expression of viral genes in vivo is critical to study viral replication and proliferation of infected cells. Therefore, we first analyzed viral gene expression in non-human primates naturally infected with simian T-cell leukemia virus type 1 (STLV-1), whose virological attributes closely resemble those of HTLV-1...
November 29, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29095831/ct-chest-and-pulmonary-functional-changes-in-patients-with-htlv-associated-myelopathy-in-the-eastern-brazilian-amazon
#6
Luiz Fábio Magno Falcão, Aline Semblano Carreira Falcão, Rita Catarina Medeiros Sousa, Waldônio de Brito Vieira, Robson Tadachi Moraes de Oliveira, Valéria Marques Ferreira Normando, George Alberto da Silva Dias, Marcio Clementino de Souza Santos, Rodrigo Santiago Barbosa Rocha, Gilberto Toshimitsu Yoshikawa, Roberta Vilela Lopes Koyama, Satomi Fujihara, Víctor Augusto Cavaleiro Corrêa, Hellen Thais Fuzii, Juarez Aantônio Simões Quaresma
The aim of this study was to compare computed tomography (CT) scans of chest and lung function among patients with Human T-Lymphotropic Virus Type 1 (HTLV) with and without HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP). In this cross-sectional study performed between January 2013 and June 2016, we included 48 patients with HAM/TSP (19 women and 11 men) and without HAM/TSP (12 women and 6 men). We compared CT findings and lung functions of these groups. Patients who had HAM/TSP had abnormal CT findings (P = 0...
2017: PloS One
https://www.readbyqxmd.com/read/29024167/imaging-spinal-cord-atrophy-in-progressive-myelopathies-htlv-i-associated-neurological-disease-ham-tsp-and-multiple-sclerosis-ms
#7
Shila Azodi, Govind Nair, Yoshimi Enose-Akahata, Emily Charlip, Ashley Vellucci, Irene Cortese, Jenifer Dwyer, B Jeanne Billioux, Chevaz Thomas, Joan Ohayon, Daniel S Reich, Steven Jacobson
OBJECTIVE: Previous work measures spinal cord thinning in chronic progressive myelopathies, including human T-lymphotropic virus 1 (HTLV-1)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) and multiple sclerosis (MS). Quantitative measurements of spinal cord atrophy are important in fully characterizing these and other spinal cord diseases. We aimed to investigate patterns of spinal cord atrophy and correlations with clinical markers. METHODS: Spinal cord cross-sectional area was measured in individuals (24 healthy controls [HCs], 17 asymptomatic carriers of HTLV-1 (AC), 47 HAM/TSP, 74 relapsing-remitting MS [RRMS], 17 secondary progressive MS [SPMS], and 40 primary progressive MS [PPMS]) from C1 to T10...
November 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28991665/spinal-cord-anteroposterior-atrophy-in-ham-tsp-magnetic-resonance-imaging-and-neuropathological-analyses
#8
Akitoshi Taniguchi, Hitoshi Mochizuki, Atsushi Yamashita, Kazutaka Shiomi, Yujiro Asada, Masamitsu Nakazato
To evaluate the spinal cord atrophy that occurs in HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), we conducted magnetic resonance imaging (MRI) and pathological analyses. In the MRI study, 15 patients with HAM/TSP and 20 age-matched normal control subjects were enrolled. Anteroposterior and transverse distances and cross-sectional areas were measured and calculated at the C2, C4, C6, T2, and T6 vertebral levels. In the pathological study, spinal cord autopsy specimens were compared between a HAM/TSP case and an adult T cell leukemia/lymphoma case...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28985098/retinal-nerve-fiber-layer-thickness-in-human-t-cell-lymphotropic-virus-type-1-patients
#9
Harold Merle, Rabih Hage, Séverine Jeannin, Philippe Cabre, Stéphane Olindo
PURPOSE: To determine whether there is an optic neuropathy (ON) in patients with human T-cell lymphotropic virus type 1 (HTLV-1) infection. METHODS: We included HTLV-1 asymptomatic carriers (a.c.HTLV-1) and tropical spastic paraparesis/HTLV-1 associated myelopathy (TSP/HAM) patients between January 1st, 2014 and March 31st, 2015. All patients had complete eye examination. The visual acuity (VA) and retinal nerve fiber layer (RNFL) thickness were measured and compared to age- and sex-matched control groups including patients seen in our refraction clinic with no previous medical or surgical history...
October 6, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28954118/case-for-diagnosis-infective-dermatitis-associated-with-htlv-1-differential-diagnosis-of-atopic-dermatitis
#10
Lorena Maria Lima de Oliveira, Marcos Vilela de Souza, Antonio Carlos Martins Guedes, Marcelo Grossi Araújo
Infective dermatitis associated with HTLV-1 (IDH) is the main cutaneous marker of HTLV-1 infection. This disease occurs primarily in children and should be differentiated from other eczemas, especially from atopic dermatitis. The largest series of IDH are from Jamaica and Brazil. There are an estimated 15 to 20 million infected people in the world, and Brazil is one of the endemic regions. Studies suggest that IDH in children may be a marker for the development of T-cell leukemia/lymphoma (ATL) or myelopathy associated with HTLV-1/tropical spastic paraparesis (HAM / TSP) in adulthood...
July 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28910419/il-10-mediated-signals-act-as-a-switch-for-lymphoproliferation-in-human-t-cell-leukemia-virus-type-1-infection-by-activating-the-stat3-and-irf4-pathways
#11
Leila Sawada, Yoshiko Nagano, Atsuhiko Hasegawa, Hikari Kanai, Kai Nogami, Sayaka Ito, Tomoo Sato, Yoshihisa Yamano, Yuetsu Tanaka, Takao Masuda, Mari Kannagi
Human T-cell leukemia virus type-1 (HTLV-1) causes two distinct diseases, adult T-cell leukemia/lymphoma (ATL) and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). Since there are no disease-specific differences among HTLV-1 strains, the etiological mechanisms separating these respective lymphoproliferative and inflammatory diseases are not well understood. In this study, by using IL-2-dependent HTLV-1-infected T-cell lines (ILTs) established from patients with ATL and HAM/TSP, we demonstrate that the anti-inflammatory cytokine IL-10 and its downstream signals potentially act as a switch for proliferation in HTLV-1-infected cells...
September 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28893939/human-t-cell-leukaemia-virus-type-1-parasitism-and-pathogenesis
#12
REVIEW
Charles R M Bangham, Masao Matsuoka
Human T-cell leukaemia virus type 1 (HTLV-1) causes not only adult T-cell leukaemia-lymphoma (ATL), but also inflammatory diseases including HTLV-1-associated myelopathy/tropical spastic paraparesis. HTLV-1 transmits primarily through cell-to-cell contact, and generates abundant infected cells in the host in order to survive and transmit to a new host. The resulting high proviral load is closely associated with the development of ATL and inflammatory diseases. To increase the number of infected cells, HTLV-1 changes the immunophenotype of infected cells, induces proliferation and inhibits apoptosis through the cooperative actions of two viral genes, tax and HTLV-1 bZIP factor (HBZ)...
October 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28888743/htlv-1-infected-thymic-epithelial-cells-convey-the-virus-to-cd4-t-lymphocytes
#13
Luciana Rodrigues Carvalho Barros, Leandra Linhares-Lacerda, Klaysa Moreira-Ramos, Marcelo Ribeiro-Alves, Maria Cristina Machado Motta, Dumith Chequer Bou-Habib, Wilson Savino
The human T-lymphotropic virus type-1 (HTLV-1) is the causative agent of adult T cell leukemia/lymphoma (ATL) and HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP). CD4(+)T cells are the main target of HTLV-1, but other cell types are known to be infected, including immature lymphocytes. Developing T cells undergo differentiation in the thymus, through migration and interaction with the thymic microenvironment, in particular with thymic epithelial cells (TEC) the major component of this three dimensional meshwork of non-lymphoid cells...
August 14, 2017: Immunobiology
https://www.readbyqxmd.com/read/28876483/htlv-1-intrafamilial-transmission-among-japanese-immigrants-in-brazil
#14
Larissa M Bandeira, Silvia N O Uehara, Marco A M Puga, Grazielli R Rezende, Ana C P Vicente, João A Domingos, Bárbara V do Lago, Christian Niel, Ana R C Motta-Castro
Human T-lymphotropic virus type 1 (HTLV-1) is the etiological agent of adult T-cell leukemia/lymphoma and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). The aim of this study was to investigate the intrafamilial transmission of HTLV-1 among Japanese immigrants and their descendants living in a non-endemic area of central Brazil. Six families were investigated. Thirty-seven relatives of the six index cases were tested by ELISA for the presence of anti-HTLV antibodies, and the positive cases were confirmed by Western blot...
September 6, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28866351/human-t-cell-leukemia-virus-type-i-tax-genotype-analysis-in-okinawa-the-southernmost-and-remotest-islands-of-japan-different-distributions-compared-with-mainland-japan-and-the-potential-value-for-the-prognosis-of-aggressive-adult-t-cell-leukemia-lymphoma
#15
Shugo Sakihama, Mineki Saito, Megumi Kuba-Miyara, Takeaki Tomoyose, Naoya Taira, Takashi Miyagi, Masaki Hayashi, Shigeko Kinjo, Sawako Nakachi, Iori Tedokon, Yukiko Nishi, Keita Tamaki, Kazuho Morichika, Jun-Nosuke Uchihara, Satoko Morishima, Ken-Nosuke Karube, Yuetsu Tanaka, Hiroaki Masuzaki, Takuya Fukushima
Okinawa, comprising remote islands off the mainland of Japan, is an endemic area of human T-cell leukemia virus type I (HTLV-1), the causative virus of adult T-cell leukemia-lymphoma (ATL) and HTLV-1-associated myelopathy (HAM). We investigated the tax genotype of HTLV-1 among 29 HTLV-1 carriers, 74 ATL patients, and 33 HAM patients in Okinawa. The genotype distribution-60 (44%) taxA cases and 76 (56%) taxB cases-differed from that of a previous report from Kagoshima Prefecture in mainland Japan (taxA, 10%; taxB, 90%)...
October 2017: Leukemia Research
https://www.readbyqxmd.com/read/28827086/risk-factors-for-erectile-dysfunction-in-men-with-htlv-1
#16
Cassius José Vitor de Oliveira, José Abraão Carneiro Neto, Rosana C P Andrade, Paulo Novis Rocha, Edgar Marcelino de Carvalho Filho
BACKGROUND: Erectile dysfunction (ED) occurs in more than 50% of patients with human T-cell lymphotropic virus type 1 (HTLV-1) infection. In the general population, atherosclerosis is the main risk factor related to ED. AIM: To compare the contribution of neurologic disorders from HTLV-1 with that of atherosclerosis as risk factors for ED in men with HTLV-1. METHODS: In this cross-sectional study, men 18 to 70 years old with HTLV-1 were classified into one of two groups according to the presence or absence of ED...
October 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28771137/the-duffy-null-genotype-is-associated-with-a-lower-level-of-ccl2-leukocytes-and-neutrophil-count-but-not-with-the-clinical-outcome-of-htlv-1-infection
#17
Maria Clara Fernandes da Silva-Malta, Camila Campos Sales, Jacqueline Cronemberger Guimarães, Poliane de Cássia Gonçalves, Daniel Gonçalves Chaves, Hadassa Campos Santos, Alexandre da Costa Pereira, João Gabriel Ribas, Anna Bárbara de Freitas Carneiro-Proietti, Marina Lobato Martins
PURPOSE: Chemokines are important in the immune response against viral infections, and may play a role in human T-lymphotropic virus 1 (HTLV-1)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) pathogenesis. Polymorphisms in the Duffy antigen receptor for chemokines (DARC), such as rs12075 (A>G; FY*B>FY*A) and rs281477 (-46T>C; GATA-1 box) may influence circulating concentrations of proinflammatory chemokines. We investigate whether Duffy genotypes influence the HTLV-1 proviral load (PVL) level, HTLV-1 infection outcome and chemokine concentrations in HTLV-1 asymptomatic carriers (AC=162), HAM/TSP patients (HAM=135) and seronegative individuals (SN=71)...
August 4, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28716148/prevalence-of-plasma-autoantibody-against-cancer-testis-antigen-ny-eso-1-in-htlv-1-infected-individuals-with-different-clinical-status
#18
Yasuo Shiohama, Tadasuke Naito, Toshio Matsuzaki, Reiko Tanaka, Takeaki Tomoyose, Hiroshi Takashima, Takuya Fukushima, Yuetsu Tanaka, Mineki Saito
BACKGROUND: Detection of specific immune responses against cancer/testis antigen NY-ESO-1 was recently reported in patients with adult T-cell leukemia/lymphoma (ATL) and human T-cell leukemia virus type 1 (HTLV-1)-infected asymptomatic carriers (ACs). However, the relationship of the responses with the HTLV-1 proviral load (PVL) and the levels of viral gene expression remain unclear. FINDINGS: We measured plasma levels of autoantibodies to NY-ESO-1 immunogenic tumor antigen in HTLV-1-infected individuals with different clinical status, and in healthy controls...
July 17, 2017: Virology Journal
https://www.readbyqxmd.com/read/28700391/human-t-lymphotropic-virus-type-1-infection-and-disease-in-spain
#19
Carmen de Mendoza, Estrella Caballero, Antonio Aguilera, Silvia Requena, Raúl Ortiz de Lejarazu, María Pirón, Rocío González, Ana Jiménez, Lourdes Roc, Ana Treviño, Rafael Benito, Miriam Fernández-Alonso, Aitziber Aguinaga, Carmen Rodríguez, Juan García-Costa, Lidia Blanco, José M Ramos, Enrique Calderón, José M Eirós, Silvia Sauleda, Pablo Barreiro, Vicente Soriano
: Human T-lymphotropic virus type 1 (HTLV-1) infection is a neglected disease despite roughly 15 million people are chronically infected worldwide. Lifelong less than 10% of carriers develop life-threatening diseases, mostly a subacute myelopathy known as tropical spastic paraparesis (TSP) and a lymphoproliferative disorder named adult T-cell leukemia (ATL). HTLV-1 is efficiently transmitted perinatally (breastfeeding), sexually (more from men to women) and parenterally (transfusions, injection drug user (IDU), and transplants)...
July 31, 2017: AIDS
https://www.readbyqxmd.com/read/28689168/systemic-diseases-in-patients-with-htlv-1-associated-uveitis
#20
Kumiko Nakao, Noriko Abematsu, Taiji Sakamoto
BACKGROUND: Human T-lymphotropic virus type 1 (HTLV-1) carriers may develop severe systemic diseases, such as adult T cell leukaemia (ATL) or HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). This study aims to investigate systemic diseases of HTLV-1 carriers who had developed HTLV-1-associated uveitis (HAU). METHODS: We investigated the occurrence of systemic diseases in 200 patients with HAU by performing a retrospective investigation of their medical records and examining the results of a postal survey...
July 8, 2017: British Journal of Ophthalmology
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