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Maksimova V, Panfil AR. Human T-Cell Leukemia Virus Type 1 Envelope Protein: Post-Entry Roles in Viral Pathogenesis. Viruses 2022; 14:v14010138. [PMID: 35062342 PMCID: PMC8778545 DOI: 10.3390/v14010138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 11/16/2022] Open
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) is an oncogenic retrovirus that is the causative infectious agent of adult T-cell leukemia/lymphoma (ATL), an aggressive and fatal CD4+ T-cell malignancy, and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), a chronic neurological disease. Disease progression in infected individuals is the result of HTLV-1-driven clonal expansion of CD4+ T-cells and is generally associated with the activities of the viral oncoproteins Tax and Hbz. A closely related virus, HTLV-2, exhibits similar genomic features and the capacity to transform T-cells, but is non-pathogenic. In vitro, HTLV-1 primarily immortalizes or transforms CD4+ T-cells, while HTLV-2 displays a transformation tropism for CD8+ T-cells. This distinct tropism is recapitulated in infected people. Through comparative studies, the genetic determinant for this divergent tropism of HTLV-1/2 has been mapped to the viral envelope (Env). In this review, we explore the emerging roles for Env beyond initial viral entry and examine current perspectives on its contributions to HTLV-1-mediated disease development.
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Affiliation(s)
- Victoria Maksimova
- Biomedical Sciences Graduate Program, Center for Retrovirus Research, Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA;
| | - Amanda R. Panfil
- Center for Retrovirus Research, Comprehensive Cancer Center and Solove Research Institute, Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA
- Correspondence:
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Suzuki S, Hoshi SI, Sekizawa A, Sagara Y, Kinoshita K, Kitamura T. Recent Prevalence of Human T-cell Leukemia Virus Type 1 Carrier Associated with Horizontal Transmission in Pregnant Japanese Women. Jpn J Infect Dis 2021; 74:576-578. [PMID: 33952772 DOI: 10.7883/yoken.jjid.2021.097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The current study was conducted to examine the number of human T-cell leukemia virus type 1 (HTLV-1) carrier and how horizontal transmission affects the prevalence of HTLV-1 carrier in pregnant Japanese women in 2019. We requested 2,214 obstetrical facilities to provide information of HTLV-1 tests in pregnant women who delivered in 2019. The estimated number of HTLV-1 carrier in pregnant Japanese women was 952. At least 10% or more of the HTLV-1 carriers were those due to horizontal transmission.
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Affiliation(s)
- Shunji Suzuki
- Department of Obstetrics and Gynecology, Japanese Red Cross Katsushika Maternity Hospital, Japan.,Japan Association of Obstetricians and Gynecologists, Japan
| | | | | | - Yoko Sagara
- Japan Association of Obstetricians and Gynecologists, Japan
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Human T-lymphotropic virus 1 and 2 among people who used illicit drugs in the state of Pará, northern Brazil. Sci Rep 2019; 9:14750. [PMID: 31611600 PMCID: PMC6791863 DOI: 10.1038/s41598-019-51383-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 09/28/2019] [Indexed: 11/09/2022] Open
Abstract
People who used illicit drugs (PWUDs) represent an important population group for acquisition and viral dispersion. In Brazil, high rates of the human T lymphotropic virus 1 (HTLV-1) and 2 (HTLV-2) have been reported in epidemiological studies. However, the epidemiological scenario of HTLV-1/2 infections in PWUDs is still poorly understood. Thus, this cross-sectional study determined the prevalence, frequency of subtypes and factors associated with HTLV-1/2 infections among PWUDs in the Brazilian state of Pará, an area considered endemic for this virus and with poor health services. Among 826 PWUDs, 53 (6.4%) presented anti-HTLV-1/2 antibodies by EIA and 44 (5.3%) presented proviral DNA by PCR. HTLV-1 and HTLV-2 were detected in 25 (3.0%) and 19 (2.3%) PWUDs, respectively. Subtypes 1a (25/44), transcontinental (23/44) and Japanese subgroups (2/44), 2b (6/44) and 2c (13/44) were identified. Involvement in illicit/criminal activity, daily use of illicit drugs, illicit drug use over 12 years, unprotected sex with other PWUDs, changes in genitalia (including ulcers and wounds), and more than 12 sexual partners were associated with HTLV-1/2 in PWUDs. This high prevalence and intense circulation of subtypes and subgroups of HTLV-1/2 is very worrying, and indicate the need for urgent actions for its control, prevention and treatment.
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Abstract
: 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). To date there is neither prophylactic vaccine nor effective antiviral therapy. A total of 327 cases of HTLV-1 infection had been reported at the HTLV-1 Spanish registry until December 2016, of whom 34 had been diagnosed with TSP and 25 with ATL. Overall 62% were Latin American immigrants and 13% were persons of African origin. The incidence of HTLV-1 in Spain has remained stable for nearly a decade with 20-25 new cases yearly. Of the 21 newly diagnosed HTLV-1 cases during year 2016, one was a native Spaniard pregnant woman, and four presented with symptomatic disease, including three with ATL and one with TSP. Underdiagnosis of HTLV-1 in Spain must be high (iceberg model), which may account for the disproportionate high rate of symptomatic cases (almost 20%) and the late recognition of preventable HTLV-1 transmissions in special populations, such as newborns and transplant recipients. Our current estimate is of 10 000 persons living with HTLV-1 infection in Spain. Given the large flux of immigrants and visitors from HTLV-1 endemic regions to Spain, the expansion of HTLV-1 screening policies is warranted. At this time, it seems worth recommending HTLV testing to all donor/recipient organ transplants and pregnant women regardless place of birth. Although current leukoreduction procedures largely prevent HTLV-1 transmission by blood transfusions, HTLV testing of all first-time donors should be cost-effective contributing to unveil asymptomatic unaware HTLV-1 carriers.
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Zihlmann KF, Mazzaia MC, Alvarenga ATD. Sentidos da interrupção da amamentação devido infeção pelo vírus linfotrópico de células T humanas do tipo 1( HTLV-1). ACTA PAUL ENFERM 2017. [DOI: 10.1590/1982-0194201700012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Resumo Objetivo Compreender os sentidos da inibição da amamentação como prevenção da transmissão vertical entre mulheres vivendo com HTLV-1 (MVHTLV). Métodos Trata-se de pesquisa qualitativa com observação participante e entrevistas em profundidade, por meio de roteiro temático, pela análise de conteúdo temática de Bardin, pré-testado e realizados com 13 pessoas - 11 mulheres e dois homens - maiores de 18 anos, diagnosticados com HTLV-1 e sem co-infecções, entre Junho/2006 a Abril/2008, em sala reservada de centro especializado em São Paulo, onde atuava a pesquisadora, psicóloga, com familiaridade e acesso aos usuários. A seleção dos sujeitos ocorreu por conveniência durante a observação participante. Os relatos dos sujeitos foram gravados, transcritos e analisados na busca dos sentidos e significados para elaboração das categorias e, foram apresentados trechos destes, identificados por nomes fictícios. Resultados A inibição da amamentação é uma decisão complexa dificultada em um contexto de desconhecimento dessa infecção pela equipe de saúde. Conclusão O desconhecimento do HTLV-1 no contexto hospitalar se torna um risco para a transmissão vertical desse vírus, além de consequências emocionais significativas. Indica-se a necessidade de informação e formação da equipe de saúde para um cuidado integral e o acolhimento das necessidades específicas de MVHTLV.
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Panfil AR, Martinez MP, Ratner L, Green PL. Human T-cell leukemia virus-associated malignancy. Curr Opin Virol 2016; 20:40-46. [PMID: 27591679 PMCID: PMC5102797 DOI: 10.1016/j.coviro.2016.08.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 08/05/2016] [Accepted: 08/16/2016] [Indexed: 12/30/2022]
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) is a tumorigenic delta retrovirus and the causative infectious agent of a non-Hodgkin's peripheral T-cell malignancy called adult T-cell leukemia/lymphoma (ATL). ATL develops in approximately 5% of infected individuals after a significant clinical latency period of several decades. Clinical classifications of ATL include smoldering, chronic, lymphoma, and acute subtypes, with varying median survival ranges of a few months to several years. Depending on the ATL subtype and disease symptoms, treatment options include 'watchful waiting', chemotherapy, antiviral therapy, allogeneic hematopoietic stem cell transplantation (alloHSCT), and targeted therapies. Herein we review the characteristics and development of ATL, as well as current and future treatment options and perspectives.
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Affiliation(s)
- Amanda R Panfil
- Center for Retrovirus Research, Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA
| | - Michael P Martinez
- Center for Retrovirus Research, Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA
| | - Lee Ratner
- Department of Medicine, Division of Molecular Oncology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Patrick L Green
- Center for Retrovirus Research, Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA.
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Einsiedel L, Woodman RJ, Flynn M, Wilson K, Cassar O, Gessain A. Human T-Lymphotropic Virus type 1 infection in an Indigenous Australian population: epidemiological insights from a hospital-based cohort study. BMC Public Health 2016; 16:787. [PMID: 27526923 PMCID: PMC4986258 DOI: 10.1186/s12889-016-3366-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 07/23/2016] [Indexed: 11/17/2022] Open
Abstract
Background The Human T Lymphotropic Virus type 1 (HTLV-1) subtype C is endemic to central Australia where each of the major sequelae of HTLV-1 infection has been documented in the socially disadvantaged Indigenous population. Nevertheless, available epidemiological information relating to HTLV-1c infection is very limited, risk factors for transmission are unknown and no coordinated program has been implemented to reduce transmission among Indigenous Australians. Identifying risk factors for HTLV-1 infection is essential to direct strategies that could control HTLV-1 transmission. Methods Risk factors for HTLV-1 infection were retrospectively determined for a cohort of Indigenous Australians who were tested for HTLV-1 at Alice Springs Hospital (ASH), 1st January 2000 to 30th June 2013. Demographic details were obtained from the ASH patient management database and the results of tests for sexually transmitted infections (STI) were obtained from the ASH pathology database. Results Among 1889 Indigenous patients whose HTLV-1 serostatus was known, 635 (33.6 %) were HTLV-1 Western blot positive. Only one of 77 (1.3 %) children tested was HTLV-1 infected. Thereafter, rates progressively increased with age (15–29 years, 17.3 %; 30–49 years, 36.2 %; 50–64 years, 41.7 %) reaching 48.5 % among men aged 50–64 years. In a multivariable model, increasing age (OR, 1.04; 95 % CI, 1.03–1.04), male gender (OR, 1.41; 95 % CI, 1.08–1.85), residence in the south (OR, 10.7; 95 % CI, 7.4–15.6) or west (OR, 4.4; 95 % CI, 3.1–6.3) of central Australia and previous STI (OR, 1.42; 95 % CI, 1.04–1.95) were associated with HTLV-1 infection. Infection was acquired by three of 351 adults who were tested more than once during the study period (seroconversion rate, 0.24 (95 % CI = 0.18–2.48) per 100 person-years). Conclusions This study confirms that HTLV-1 is highly endemic to central Australia. Although childhood infection was documented, HTLV-1 infection in adults was closely associated with increasing age, male gender and STI history. Multiple modes of transmission are therefore likely to contribute to high rates of HTLV-1 infection in the Indigenous Australian population. Future strategies to control HTLV-1 transmission in this population require careful community engagement, cultural understanding and Indigenous leadership.
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Affiliation(s)
- Lloyd Einsiedel
- Flinders University/Northern Territory Rural Clinical School, Alice Springs Hospital, Rubuntja Building, 0870, Northern Territory, Australia. .,Aboriginal Health Unit, BakerIDI,central Australia, Alice Springs Hospital, 0870, Northern Territory, Australia.
| | - Richard J Woodman
- Flinders University/Northern Territory Rural Clinical School, Alice Springs Hospital, Rubuntja Building, 0870, Northern Territory, Australia
| | - Maria Flynn
- Flinders University/Northern Territory Rural Clinical School, Alice Springs Hospital, Rubuntja Building, 0870, Northern Territory, Australia
| | - Kim Wilson
- National Serological Reference Laboratory, Melbourne, Australia
| | - Olivier Cassar
- Institut Pasteur, Unité d'Epidémiologie et Physiopathologie des Virus Oncogènes, Département de Virologie, F-75015, Paris, France.,CNRS, UMR 3569, 28 Rue du Dr. Roux, F-75015, Paris, France
| | - Antoine Gessain
- Institut Pasteur, Unité d'Epidémiologie et Physiopathologie des Virus Oncogènes, Département de Virologie, F-75015, Paris, France.,CNRS, UMR 3569, 28 Rue du Dr. Roux, F-75015, Paris, France
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Suzuki S, Tanaka M, Matsuda H, Tsukahara Y, Kuribayashi Y, Nakai A, Miyazaki R, Kamiya N, Sekizawa A, Mizutani N, Kinoshita K. Prevalence of human T-cell leukemia virus type 1 carrier in Japanese pregnant women in 2013. J Clin Med Res 2015; 7:499-500. [PMID: 25883717 PMCID: PMC4394927 DOI: 10.14740/jocmr2097w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2015] [Indexed: 11/11/2022] Open
Affiliation(s)
- Shunji Suzuki
- Japan Association of Obstetricians and Gynecologists, Japan
| | | | - Hideo Matsuda
- Japan Association of Obstetricians and Gynecologists, Japan
| | - Yuki Tsukahara
- Japan Association of Obstetricians and Gynecologists, Japan
| | | | - Akihito Nakai
- Japan Association of Obstetricians and Gynecologists, Japan
| | | | - Naoki Kamiya
- Japan Association of Obstetricians and Gynecologists, Japan
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Paiva A, Casseb J. Sexual transmission of human T-cell lymphotropic virus type 1. Rev Soc Bras Med Trop 2014; 47:265-74. [PMID: 25075475 DOI: 10.1590/0037-8682-0232-2013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 02/17/2014] [Indexed: 11/22/2022] Open
Abstract
Human T-cell lymphotropic virus type 1 (HTLV-1) is endemic in many parts of the world and is primarily transmitted through sexual intercourse or from mother to child. Sexual transmission occurs more efficiently from men to women than women to men and might be enhanced by sexually transmitted diseases that cause ulcers and result in mucosal ruptures, such as syphilis, herpes simplex type 2 (HSV-2), and chancroid. Other sexually transmitted diseases might result in the recruitment of inflammatory cells and could increase the risk of HTLV-1 acquisition and transmission. Additionally, factors that are associated with higher transmission risks include the presence of antibodies against the viral oncoprotein Tax (anti-Tax), a higher proviral load in peripheral blood lymphocytes, and increased cervicovaginal or seminal secretions. Seminal fluid has been reported to increase HTLV replication and transmission, whereas male circumcision and neutralizing antibodies might have a protective effect. Recently, free virions were discovered in plasma, which reveals a possible new mode of HTLV replication. It is unclear how this discovery might affect the routes of HTLV transmission, particularly sexual transmission, because HTLV transmission rates are significantly higher from men to women than women to men.
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Affiliation(s)
- Arthur Paiva
- Laboratório de Investigação em Dermatologia e Imunodeficiência, Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Jorge Casseb
- Laboratório de Investigação em Dermatologia e Imunodeficiência, Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, SP, Brazil
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Huang CT, Lee YH, Chow KC, Yang CF, Chen PCH, Hsiao LT, Gau JP, Tzeng CH, Liu CY, Chiou TJ. Adult T-cell leukaemia/lymphoma can mimic other lymphomas in a non-endemic area: dilemmas in diagnosis and treatment. Intern Med J 2014; 44:374-83. [DOI: 10.1111/imj.12394] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 02/08/2014] [Indexed: 11/29/2022]
Affiliation(s)
- C-T. Huang
- Division of Haematology and Oncology; Taipei Veterans General Hospital; Taipei Taiwan
- Division of Haematology and Oncology; Department of Medicine; Yang-Ming Branch of Taipei City Hospital; Taipei Taiwan
- National Yang-Ming University School of Medicine; Taipei Taiwan
| | - Y-H. Lee
- National Yang-Ming University School of Medicine; Taipei Taiwan
- Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
| | - K-C. Chow
- Graduate Institute of Biomedical Sciences; National Chung Hsing University; Taichung Taiwan
| | - C-F. Yang
- National Yang-Ming University School of Medicine; Taipei Taiwan
- Department of Pathology and Laboratory Medicine; Taipei Veterans General Hospital; Taipei Taiwan
| | - P. C-H. Chen
- National Yang-Ming University School of Medicine; Taipei Taiwan
- Department of Pathology and Laboratory Medicine; Taipei Veterans General Hospital; Taipei Taiwan
| | - L-T. Hsiao
- Division of Haematology and Oncology; Taipei Veterans General Hospital; Taipei Taiwan
- National Yang-Ming University School of Medicine; Taipei Taiwan
| | - J-P. Gau
- Division of Haematology and Oncology; Taipei Veterans General Hospital; Taipei Taiwan
- National Yang-Ming University School of Medicine; Taipei Taiwan
| | - C-H. Tzeng
- Division of Haematology and Oncology; Taipei Veterans General Hospital; Taipei Taiwan
- National Yang-Ming University School of Medicine; Taipei Taiwan
| | - C-Y. Liu
- Division of Haematology and Oncology; Taipei Veterans General Hospital; Taipei Taiwan
- National Yang-Ming University School of Medicine; Taipei Taiwan
- Institute of Biopharmaceutical Sciences; National Yang-Ming University; Taipei Taiwan
| | - T-J. Chiou
- Division of Haematology and Oncology; Taipei Veterans General Hospital; Taipei Taiwan
- National Yang-Ming University School of Medicine; Taipei Taiwan
- Division of Transfusion Medicine; Taipei Veterans General Hospital; Taipei Taiwan
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11
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Suzuki S, Tanaka M, Matsuda H, Tsukahara Y, Kuribayashi Y, Gomibuchi H, Miyazaki R, Kamiya N, Nakai A, Kinoshita K. Instruction of feeding methods to Japanese pregnant women who cannot be confirmed as HTLV-1 carrier by western blot test. J Matern Fetal Neonatal Med 2013; 27:1392-3. [PMID: 24102288 DOI: 10.3109/14767058.2013.852175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Shunji Suzuki
- Department of Obstetrics and Gynecology, Japanese Red Cross Katshushika Maternity Hospital , Tateishi, Katsushika-ku , Japan and
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Suzuki S, Tanaka M, Matsuda H, Tsukahara Y, Kuribayashi Y, Gomibuchi H, Miyazaki R, Kamiya N, Nakai A, Kinoshita K. Current status of HTLV-1 carrier in Japanese pregnant women. J Matern Fetal Neonatal Med 2013; 27:312-3. [DOI: 10.3109/14767058.2013.814631] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Matsubara F, Haraguchi K, Harada K, Koizumi A. Screening for antibodies to human T-cell leukemia virus type I in Japanese breast milk. Biol Pharm Bull 2012; 35:773-6. [PMID: 22687415 DOI: 10.1248/bpb.35.773] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Japanese breast milk samples were tested for antibodies to human T-cell leukemia virus type I (HTLV-1) by particle agglutination (PA) and a line immunoassay (LIA). In the PA method, the agglutination reaction between the HTLV-1 antibody and sensitized particles occurred at a 1 : 128 dilution of some breast milk samples. The average antibody titer was one order of magnitude lower than that in the serum positive control. A total of 243 human breast milk specimens were assayed by PA, of which 21 samples from Okinawa, Hyogo, Miyagi and Hokkaido were positive or deferred. The results of the 21 positive samples were subsequently assayed by LIA (INNO-LIA™ HTLV I/II) for confirmation; and one sample was positive, and two were indeterminate. We attempted to use polymerase chain reaction (PCR) to detect HTLV-1 provirus DNA, but we did not detect PCR products for the pX1 region of the HTLV-1 genome in the LIA-positive samples. These negative PCR results are most likely due to the lower sensitivity of the PCR for amplification from milk than from HTLV-1-positive monocytes. In conclusion, the PA method to breast milk samples appears to be a suitable tool to screen for antibodies to HTLV-1 in the breast milk of carrier mothers in cases in which it would be difficult to use serum for the test. Although LIA may be able to confirm HTLV-1 infection, the presence of HTLV-1 provirus should be confirmed in the breast milk.
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Affiliation(s)
- Futoshi Matsubara
- Department of Microbiology and Biochemistry, Daiichi College of Pharmaceutical Sciences, Fukuoka, Japan.
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Poveda-Jaramillo R, Pacheco AP, Martínez A. Tropical Spastic Paraparesis and Anesthesia: Case Report and Topic Review. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2012. [DOI: 10.1016/s2256-2087(12)70034-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Poveda-Jaramillo R, Pacheco Pacheco A, Martínez A. Paraparesia espástica tropical y anestesia: reporte de caso y revisión temática. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/s0120-3347(12)70034-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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van Tienen C, Jakobsen M, Schim van der Loeff M. Stopping breastfeeding to prevent vertical transmission of HTLV-1 in resource-poor settings: beneficial or harmful? Arch Gynecol Obstet 2012; 286:255-6. [PMID: 22228317 PMCID: PMC3374111 DOI: 10.1007/s00404-011-2211-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 12/31/2011] [Indexed: 11/25/2022]
Affiliation(s)
- Carla van Tienen
- Medical Microbiology and Infectious Diseases, Erasmus Medical Centre, ’s-Gravendijkwal 230, Rotterdam, The Netherlands
| | - Marianne Jakobsen
- Paediatric Department, Kolding Sygehus, Skovvangen 2-4, 6000 Kolding, Denmark
| | - Maarten Schim van der Loeff
- Department of Infectious Diseases, Health Service of Amsterdam, Nieuwe Achtergracht 100, Amsterdam, The Netherlands
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Tropical Spastic Paraparesis and Anesthesia: Case Report and Topic Review. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2012. [DOI: 10.1097/01819236-201240020-00017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Treviño A, Benito R, Caballero E, Ramos JM, Parra P, Roc L, Eiros JM, Aguilera A, García J, Cifuentes C, Marcaida G, Rodríguez C, Trigo M, Arroyo LA, de Mendoza C, de Lejarazu RO, Soriano V. HTLV infection among foreign pregnant women living in Spain. J Clin Virol 2011; 52:119-22. [PMID: 21782504 DOI: 10.1016/j.jcv.2011.06.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 05/23/2011] [Accepted: 06/24/2011] [Indexed: 12/25/2022]
Abstract
BACKGROUND The overall seroprevalence of HTLV infection among pregnant women in Spain is below 0.02% and accordingly universal antenatal screening is not recommended. However, as the number of immigrants has significantly increased during the last decade, this population might warrant specific considerations. OBJECTIVE To evaluate the seroprevalence of HTLV infection among immigrant pregnant women living in Spain. METHODS From January 2009 to December 2010 a cross-sectional study was carried out in all foreign pregnant women attended at 14 Spanish clinics. All were tested for HTLV antibodies using a commercial enzyme-immunoassay, being reactive samples confirmed by Western blot or PCR. RESULTS A total of 3337 foreign pregnant women were examined. Their origin was as follows: Latin America 1579 (47%), North Africa 507 (16%), East Europe 606 (18%), Sub-Saharan Africa 316 (9%), North America and West Europe 116 (3.5%) and Asia and Australia 163 (5%). A total of 7 samples were confirmed as HTLV positive, of which 6 were HTLV-1 and 1 HTLV-2. HTLV-1 infection was found in 5 women coming from Latin America and 1 from Morocco. The only woman with HTLV-2 came from Ghana. The overall HTLV seroprevalence was 0.2%, being 0.3% among Latin Americans and 0.2% among Africans. It was absent among women coming from other regions. CONCLUSIONS The seroprevalence of HTLV infection among foreign pregnant women in Spain is 0.2%, being all cases found in immigrants from Latin America and Africa. Given the benefit of preventing vertical transmission, antenatal screening should be recommended in pregnant women coming from these regions.
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Affiliation(s)
- Ana Treviño
- Infectious Diseases Department, Hospital Carlos III, Calle Sinesio Delgado 10, Madrid, Spain.
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Pasquier C, Bujan L. [Management of an HTLV-1 infected man in assisted reproductive technology]. BULLETIN DE LA SOCIETE DE PATHOLOGIE EXOTIQUE (1990) 2011; 104:203-4. [PMID: 21695494 DOI: 10.1007/s13149-011-0167-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Accepted: 04/19/2011] [Indexed: 11/26/2022]
Abstract
Management of people infected by HTLV-1 in assisted reproductive technology (ART) is a rare event. Since HTLV is sexually transmitted, HTLV serodiscordant couples have to systematically use condoms. The sperm processing (centrifugation on density gradient) performed for semen of HIV-infected men was applied. Detection of HTLV-1 provirus DNA was negative before and after sperm processing, allowing ART.
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Affiliation(s)
- C Pasquier
- Inserm U1043, laboratoire de virologie, CHU de Toulouse,Toulouse, France.
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