Six Colombian Patients with Adult T–Cell Leukemia/Lymphoma

Blank, Abraham; Yamaguchi, Kazunari; Blank, Michelle; Zaninovic, Vladimir; Sonoda, Shunro; Takatsuki, Kiyoshi

doi:10.3109/10428199309148542

Cited by 22 publications

(12 citation statements)

References 14 publications

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“…Polyclonal proliferation and increased numbers of HTLV-1-infected cells would favor genetic changes, the result being accelerated leukemogenesis. This notion is in line with clinical observations that the average age at the onset of ATL in Colombian, Caribbean and African patients is younger than in the Japanese Blank et al, 1993), and in a younger onset of ATL patients with strongyloidiasis in Martinique (French West India) (Plumelle et al, 1993). It was also reported that ATL developed after 7 years of observation in an asymptomatic HTLV-1 carrier with strongyloidiasis, who was born in Martinique (Patey et al, 1992).…”

Section: Discussionsupporting

confidence: 74%

Involvement of IL-2/IL-2R system activation by parasite antigen in polyclonal expansion of CD4+25+ HTLV-1-infected T-cells in human carriers of both HTLV-1 and S. stercoralis

et al. 2002

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The intermediate state of HTLV-1 infection, often found in individuals dually infected with Strongyloides stercoralis (S. stercoralis) and HTLV-1, is assumed to be a preleukemic state of adult T-cell leukemia (ATL). To investigate the e ects of S. stercoralis superinfection on the natural history of HTLV-1 infection, we characterized peripheral blood samples of these individuals in Okinawa, Japan, an endemic area for both HTLV-1 and S. stercoralis and we studied e ects of the parasite antigen on T-cells. The dually infected individuals showed a signi®cantly higher provirus load and an increase in CD4 + 25 + T cell population, with a signi®cant, positive correlation. This increase was attributable to polyclonal expansion of HTLV-1-infected cells, as demonstrated by inverse-long PCR analysis of the integration sites. S. stercoralis antigen activated the IL-2 promoter in reporter gene assays, induced production of IL-2 by PBMC in vitro, and supported growth of IL-2 dependent cell lines immortalized by HTLV-1 infection or the transduction of Tax. Taken collectively, these results indicate that S. stercoralis infection induces polyclonal expansion of HTLV-1-infected cells by activating the IL-2/IL-2R system in dually infected carriers, an event which may be a precipitating factor for ATL and in¯ammatory diseases.

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Section: Discussionsupporting

confidence: 74%

Involvement of IL-2/IL-2R system activation by parasite antigen in polyclonal expansion of CD4+25+ HTLV-1-infected T-cells in human carriers of both HTLV-1 and S. stercoralis

et al. 2002

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“…Furthermore, there is evidence that HTLV-1 can influence the outcome and severity of other infections such as tuberculosis (Verdonck et al, 2007a), HIV (Brites et al, 2001; Silva et al, 2009), and hepatitis C (Castro and Roger, 2016). Although none of the records suggested the role of co-infections in explaining family aggregation, they did report families in which co-infections (i.e., strongyloidiasis and infective dermatitis) were present (Blank et al, 1993; Wilks et al, 1993; LaGrenade et al, 1996; Gonçalves et al, 1999; Araújo et al, 2002; Mahé et al, 2004; Primo et al, 2005; Nobre et al, 2006; Suite et al, 2009; Alvarez et al, 2011; da Silva et al, 2013). …”

Section: Discussionmentioning

confidence: 99%

Family Aggregation of Human T-Lymphotropic Virus 1-Associated Diseases: A Systematic Review

Álvarez¹,

Gotuzzo

Vandamme

et al. 2016

Front. Microbiol.

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Human T-lymphotropic virus 1 (HTLV-1) is a retrovirus that produces a persistent infection. Two transmission routes (from mother to child and via sexual intercourse) favor familial clustering of HTLV-1. It is yet unknown why most HTLV-1 carriers remain asymptomatic while about 10% of them develop complications. HTLV-1 associated diseases were originally described as sporadic entities, but familial presentations have been reported. To explore what is known about family aggregation of HTLV-1-associated diseases we undertook a systematic review. We aimed at answering whether, when, and where family aggregation of HTLV-1-associated diseases was reported, which relatives were affected and which hypotheses were proposed to explain aggregation. We searched MEDLINE, abstract books of HTLV conferences and reference lists of selected papers. Search terms used referred to HTLV-1 infection, and HTLV-1-associated diseases, and family studies. HTLV-1-associated diseases considered are adult T-cell leukemia/lymphoma (ATLL), HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), HTLV-1-associated uveitis, and infective dermatitis. Seventy-four records reported HTLV-1-associated diseases in more than one member of the same family and were included. Most reports came from HTLV-1-endemic countries, mainly Japan (n = 30) and Brazil (n = 10). These reports described a total of 270 families in which more than one relative had HTLV-1-associated diseases. In most families, different family members suffered from the same disease (n = 223). The diseases most frequently reported were ATLL (115 families) and HAM/TSP (102 families). Most families (n = 144) included two to four affected individuals. The proportion of ATLL patients with family history of ATLL ranged from 2 to 26%. The proportion of HAM/TSP patients with family history of HAM/TSP ranged from 1 to 48%. The predominant cluster types for ATLL were clusters of siblings and parent-child pairs and for HAM/TSP, an affected parent with one or more affected children. The evidence in the literature, although weak, does suggest that HTLV-1-associated diseases sometimes cluster in families. Whether familial transmission of HTLV-1 is the only determining factor, or whether other factors are also involved, needs further research.

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“…Seis tinham idade igual ou inferior a 10 anos na época do diagnóstico 31,[77][78][79][80][81][82][83][84][85][86][87][88][89][90][91] .…”

Section: Leucemia/linfoma De Células T Do Adultounclassified

Manifestations of the human T-cell lymphotropic virus type I infection in childhood and adolescence

Bittencourt¹,

Primo²,

Oliveira³

2006

J Pediatr (Rio J)

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Objectives: To review the literature on diseases linked with infection by human T-cell lymphotropic virus type I (HTLV-I) in childhood and adolescence, with focus on clinical aspects, diagnosis, pathogenesis, progression and treatment.Sources: Medical literature published during the last 20 years identified using PubMed and MEDLINE and from specialized medical books, with emphasis on infective dermatitis associated with HTLV-I (IDH), on the juvenile form of HTLV-associated myelopathy/tropical spastic paraparesis (HAM/TSP), on adult T-cell leukemia/lymphoma (ATL) and on HTLV-I-associated uveitis. Keywords used to search databases were: HTLV-I-associated infective dermatitis, HTLV-Iassociated myelopathy/tropical spastic paraparesis, adult T-cell leukemia/lymphoma, HTLV-I-associated uveitis.Summary of the findings: IDH is a chronic, relapsing and infected dermatitis of childhood which always involves the scalp and which may progress to HAM/TSP and ATL. HAM/TSP is a chronic and incapacitating myelopathy of adults. There are 17 well-documented cases of HAM/TSP in children and adolescents in the literature, 12 of whom are patients with IDH. In contrast with the adult form of the disease, the juvenile form is rapid and progressive. ATL is a type of T-cell leukemia/ lymphoma that affects adults and is generally fatal. Eleven of the 24 published reports of ATL in children and adolescents were diagnosed in Brazil.Conclusions: These diseases are likely to be more common in childhood and adolescence than the literature would suggest. It is advisable that serological testing be performed for HTLV-I in children and adolescents suffering from chronic and relapsing eczema, with signs and symptoms of myelopathy or with a diagnosis of T-cell leukemia/lymphoma. It is important that pediatricians know how to recognize the pediatric manifestations of this infection in order to correctly diagnose them and offer their patients appropriate guidance and treatment.

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Six Colombian Patients with Adult T–Cell Leukemia/Lymphoma

Cited by 22 publications

References 14 publications

Involvement of IL-2/IL-2R system activation by parasite antigen in polyclonal expansion of CD4+25+ HTLV-1-infected T-cells in human carriers of both HTLV-1 and S. stercoralis

Involvement of IL-2/IL-2R system activation by parasite antigen in polyclonal expansion of CD4+25+ HTLV-1-infected T-cells in human carriers of both HTLV-1 and S. stercoralis

Family Aggregation of Human T-Lymphotropic Virus 1-Associated Diseases: A Systematic Review

Manifestations of the human T-cell lymphotropic virus type I infection in childhood and adolescence

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