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Anchau Wegermann C, Santana Bezerra E, Gomes de Macedo Sant'Anna I, Ortega De Oliveira PC, da Costa Silva R, Rocco Machado T, Wanderley Tinoco L, Vieira de Souza MCB, Pascutti P, Santos Boechat FDC, de Moraes MC. Insights into nucleoside hydrolase from Leishmania donovani inhibition: A new bioaffinity chromatography-based screening assay and docking studies. Bioorg Chem 2024; 146:107302. [PMID: 38521010 DOI: 10.1016/j.bioorg.2024.107302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 03/19/2024] [Indexed: 03/25/2024]
Abstract
Leishmaniasis, a group of neglected infectious diseases, encompasses a serious health concern, particularly with visceral leishmaniasis exhibiting potentially fatal outcomes. Nucleoside hydrolase (NH) has a fundamental role in the purine salvage pathway, crucial for Leishmania donovani survival, and presents a promising target for developing new drugs for visceral leishmaniasis treatment. In this study, LdNH was immobilized into fused silica capillaries, resulting in immobilized enzyme reactors (IMERs). The LdNH-IMER activity was monitored on-flow in a multidimensional liquid chromatography system, with the IMER in the first dimension. A C18 analytical column in the second dimension furnished the rapid separation of the substrate (inosine) and product (hypoxanthine), enabling direct enzyme activity monitoring through product quantification. LdNH-IMER exhibited high stability and was characterized by determining the Michaelis-Menten constant. A known inhibitor (1-(β-d-Ribofuranosyl)-4-quinolone derivative) was used as a model to validate the established method in inhibitor recognition. Screening of three additional derivatives of 1-(β-d-Ribofuranosyl)-4-quinolone led to the discovery of novel inhibitors, with compound 2a exhibiting superior inhibitory activity (Ki = 23.37 ± 3.64 µmol/L) compared to the employed model inhibitor. Docking and Molecular Dynamics studies provided crucial insights into inhibitor interactions at the enzyme active site, offering valuable information for developing new LdNH inhibitors. Therefore, this study presents a novel screening assay and contributes to the development of potent LdNH inhibitors.
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Affiliation(s)
- Camila Anchau Wegermann
- BioCrom, Laboratório de Cromatografia de Bioafinidade e Química Ambiental, Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense (UFF), Niterói, Brazil; Laboratório GQCBio, Grupo de Química de Coordenação Biológica, Departamento de Química Geral e Inorgânica, Instituto de Química, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
| | - Evelyn Santana Bezerra
- BioCrom, Laboratório de Cromatografia de Bioafinidade e Química Ambiental, Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - Isabella Gomes de Macedo Sant'Anna
- BioCrom, Laboratório de Cromatografia de Bioafinidade e Química Ambiental, Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - Pamella Christina Ortega De Oliveira
- BioCrom, Laboratório de Cromatografia de Bioafinidade e Química Ambiental, Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - Rodrigo da Costa Silva
- Laboratório LNHC, Instituto de Química, Departamento de Química Orgânica, Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil
| | - Thamires Rocco Machado
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luzineide Wanderley Tinoco
- Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro (UFRJ), Cidade Universitária, 21941-902 Rio de Janeiro, RJ, Brazil
| | | | - Pedro Pascutti
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda da Costa Santos Boechat
- Laboratório LNHC, Instituto de Química, Departamento de Química Orgânica, Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil
| | - Marcela Cristina de Moraes
- BioCrom, Laboratório de Cromatografia de Bioafinidade e Química Ambiental, Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense (UFF), Niterói, Brazil.
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2
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Freitas CS, Pereira IAG, Lage DP, Vale DL, Pimenta BL, Soares NP, Santiago SS, Martins VT, Câmara RSB, Jesus MM, Tavares GSV, Ramos FF, Ludolf F, Magalhães LND, Oliveira FM, Duarte MC, Chávez-Fumagalli MA, Costa AV, Roatt BM, Teixeira RR, Coelho EAF. New synthetic molecules incorporated into polymeric micelles used for treatment against visceral leishmaniasis. Cytokine 2024; 177:156543. [PMID: 38373365 DOI: 10.1016/j.cyto.2024.156543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/21/2024]
Abstract
Treatment against visceral leishmaniasis (VL) presents problems, mainly related to drug toxicity, high cost and/or by emergence of resistant strains. In the present study, two vanillin synthetic derivatives, 3 s [4-(2-hydroxy-3-(4-octyl-1H-1,2,3-triazol-1-yl)propoxy)-3-methoxybenzaldehyde] and 3 t [4-(3-(4-decyl-1H-1,2,3-triazol-1-yl)-2-hydroxypropoxy)-3-methoxybenzaldehyde], were evaluated as therapeutic candidates in a murine model against Leishmania infantum infection. Molecules were used pure (3 s and 3 t) or incorporated into Poloxamer 407-based micelles (3 s/M and 3 t/M) in the infected animals, which also received amphotericin B (AmpB) or Ambisome® as control. Results showed that 3 s/M and 3 t/M compositions induced a Th1-type immune response in treated animals, with higher levels of IFN-γ, IL-2, TNF-α, IL-12, nitrite, and IgG2a antibodies. Animals presented also low toxicity and significant reductions in the parasite load in their spleens, livers, bone marrows and draining lymph nodes, as compared as control groups mice, with the evaluations performed one and 30 days after the application of the therapeutics. In conclusion, preliminary data suggest that 3 s/M and 3 t/M could be considered for future studies as therapeutic agents against VL.
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Affiliation(s)
- Camila S Freitas
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Isabela A G Pereira
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Daniela P Lage
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Danniele L Vale
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Breno L Pimenta
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Nícia P Soares
- Laboratório de Imunopatologia, Núcleo de Pesquisas em Ciências Biológicas, Departamento de Ciências Biológicas, Insituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Samira S Santiago
- Grupo de Síntese e Pesquisa de Compostos Bioativos, Departamento de Química, Universidade Federal de Viçosa, Avenida PH Rolfs, S/N, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Vívian T Martins
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Raquel S B Câmara
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Marcelo M Jesus
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Grasiele S V Tavares
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Fernanda F Ramos
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Fernanda Ludolf
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Faculdade de Ciências Médicas de Minas Gerais, Belo Horizonte 30130-110, Minas Gerais, Brazil
| | - Lícia N D Magalhães
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Fabrício M Oliveira
- Instituto Federal de Educação de Minas Gerais, Rua Afonso Sardinha, 90, Bairro Pioneiros, 36420-000 Ouro Branco, Minas Gerais, Brazil
| | - Mariana C Duarte
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil; Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Miguel A Chávez-Fumagalli
- Computational Biology and Chemistry Research Group, Vicerrectorado de Investigación, Universidad Católica de Santa María, Urb. San José S/N, Umacollo, Arequipa, Peru
| | - Adilson V Costa
- Departamento de Química e Física, Universidade Federal do Espírito Santo, Alto Universitário, s/n, Guararema, 29500-000, Alegre, Espírito Santo, Brazil
| | - Bruno M Roatt
- Laboratório de Imunopatologia, Núcleo de Pesquisas em Ciências Biológicas, Departamento de Ciências Biológicas, Insituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Róbson R Teixeira
- Grupo de Síntese e Pesquisa de Compostos Bioativos, Departamento de Química, Universidade Federal de Viçosa, Avenida PH Rolfs, S/N, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Eduardo A F Coelho
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil; Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Minas Gerais, Brazil.
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3
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Swaminathan S, Mai LT, Meli AP, Carmona-Pérez L, Charpentier T, Lamarre A, King IL, Stäger S. LAG-3- and CXCR5-expressing CD4 T cells display progenitor-like properties during chronic visceral leishmaniasis. Cell Rep 2024; 43:113879. [PMID: 38416647 DOI: 10.1016/j.celrep.2024.113879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 01/04/2024] [Accepted: 02/13/2024] [Indexed: 03/01/2024] Open
Abstract
Maintenance of CD4 T cells during chronic infections is vital for limiting pathogen burden and disease recrudescence. Although inhibitory receptor expression by CD4 T cells is commonly associated with immune suppression and exhaustion, such cell-intrinsic mechanisms that control activation are also associated with cell survival. Using a mouse model of visceral leishmaniasis (VL), we discovered a subset of lymphocyte activation gene 3 (LAG-3)-expressing CD4 T cells that co-express CXCR5. Although LAG3+CXCR5+ CD4 T cells are present in naive mice, they expand during VL. These cells express gene signatures associated with self-renewal capacity, suggesting progenitor-like properties. When transferred into Rag1-/- mice, these LAG3+CXCR5+ CD4 T cells differentiated into multiple effector types upon Leishmania donovani infection. The transcriptional repressor B cell lymphoma-6 was partially required for their maintenance. Altogether, we propose that the LAG3+CXCR5+ CD4 T cell subset could play a role in maintaining CD4 T cell responses during persistent infections.
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Affiliation(s)
- Sharada Swaminathan
- INRS-Centre Armand-Frappier Santé Biotechnologie and Infectiopôle INRS, 531 Boulevard des Prairies, Laval, QC, Canada
| | - Linh Thuy Mai
- INRS-Centre Armand-Frappier Santé Biotechnologie and Infectiopôle INRS, 531 Boulevard des Prairies, Laval, QC, Canada
| | - Alexandre P Meli
- Department of Microbiology & Immunology, Research Institute of the McGill University Health Centre, Meakins-Christie Laboratories, McGill Centre for Microbiome Research, McGill University, Montreal, QC, Canada
| | - Liseth Carmona-Pérez
- INRS-Centre Armand-Frappier Santé Biotechnologie and Infectiopôle INRS, 531 Boulevard des Prairies, Laval, QC, Canada
| | - Tania Charpentier
- INRS-Centre Armand-Frappier Santé Biotechnologie and Infectiopôle INRS, 531 Boulevard des Prairies, Laval, QC, Canada
| | - Alain Lamarre
- INRS-Centre Armand-Frappier Santé Biotechnologie and Infectiopôle INRS, 531 Boulevard des Prairies, Laval, QC, Canada
| | - Irah L King
- Department of Microbiology & Immunology, Research Institute of the McGill University Health Centre, Meakins-Christie Laboratories, McGill Centre for Microbiome Research, McGill University, Montreal, QC, Canada
| | - Simona Stäger
- INRS-Centre Armand-Frappier Santé Biotechnologie and Infectiopôle INRS, 531 Boulevard des Prairies, Laval, QC, Canada.
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4
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Mule SN, Saad JS, Sauter IP, Fernandes LR, de Oliveira GS, Quina D, Tano FT, Brandt-Almeida D, Padrón G, Stolf BS, Larsen MR, Cortez M, Palmisano G. The protein map of the protozoan parasite Leishmania (Leishmania) amazonensis, Leishmania (Viannia) braziliensis and Leishmania (Leishmania) infantum during growth phase transition and temperature stress. J Proteomics 2024; 295:105088. [PMID: 38237666 DOI: 10.1016/j.jprot.2024.105088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 01/15/2024] [Indexed: 02/01/2024]
Abstract
Leishmania parasites cause a spectrum of diseases termed leishmaniasis, which manifests in two main clinical forms, cutaneous and visceral leishmaniasis. Leishmania promastigotes transit from proliferative exponential to quiescent stationary phases inside the insect vector, a relevant step that recapitulates early molecular events of metacyclogenesis. During the insect blood meal of the mammalian hosts, the released parasites interact initially with the skin, an event marked by temperature changes. Deep knowledge on the molecular events activated during Leishmania-host interactions in each step is crucial to develop better therapies and to understand the pathogenesis. In this study, the proteomes of Leishmania (Leishmania) amazonensis (La), Leishmania (Viannia) braziliensis (Lb), and Leishmania (Leishmania) infantum (syn L. L. chagasi) (Lc) were analyzed using quantitative proteomics to uncover the proteome modulation in three different conditions related to growth phases and temperature shifts: 1) exponential phase (Exp); 2) stationary phase (Sta25) and; 3) stationary phase subjected to heat stress (Sta34). Functional validations were performed using orthogonal techniques, focusing on α-tubulin, gp63 and heat shock proteins (HSPs). Species-specific and condition-specific modulation highlights the plasticity of the Leishmania proteome, showing that pathways related to metabolism and cytoskeleton are significantly modulated from exponential to stationary growth phases, while protein folding, unfolded protein binding, signaling and microtubule-based movement were differentially altered during temperature shifts. This study provides an in-depth proteome analysis of three Leishmania spp., and contributes compelling evidence of the molecular alterations of these parasites in conditions mimicking the interaction of the parasites with the insect vector and vertebrate hosts. SIGNIFICANCE: Leishmaniasis disease manifests in two main clinical forms according to the infecting Leishmania species and host immune responses, cutaneous and visceral leishmaniasis. In Brazil, cutaneous leishmaniasis (CL) is associated with L. braziliensis and L. amazonensis, while visceral leishmaniasis, also called kala-azar, is caused by L. infantum. Leishmania parasites remodel their proteomes during growth phase transition and changes in their mileu imposed by the host, including temperature. In this study, we performed a quantitative mass spectrometry-based proteomics to compare the proteome of three New world Leishmania species, L. amazonensis (La), L. braziliensis (Lb) and L. infantum (syn L. chagasi) (Lc) in three conditions: a) exponential phase at 25 °C (Exp); b) stationary phase at 25 °C (Sta25) and; c) stationary phase subjected to temperature stress at 34 °C (Sta34). This study provides an in-depth proteome analysis of three Leishmania spp. with varying pathophysiological outcomes, and contributes compelling evidence of the molecular alterations of these parasites in conditions mimicking the interaction of the parasites with the insect vector and vertebrate hosts.
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Affiliation(s)
- Simon Ngao Mule
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Joyce Silva Saad
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Ismael Pretto Sauter
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Livia Rosa Fernandes
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | | | - Daniel Quina
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Fabia Tomie Tano
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Deborah Brandt-Almeida
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Gabriel Padrón
- Center for Genetic Engineering & Biotechnology, La Habana, Cuba
| | - Beatriz Simonsen Stolf
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Martin R Larsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Mauro Cortez
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil.
| | - Giuseppe Palmisano
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, Brazil; Analytical Glycoimmunology Group, Department of Molecular Sciences, Macquarie University, Macquarie Park, NSW 2109, Australia.
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5
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Jha MK, Chandel HS, Pandey SP, Sarode A, Bodhale N, Bhattacharya-Majumdar S, Majumdar S, Saha B. Myotubularin-related protein-6 silencing protects mice from Leishmania donovani infection. Int Immunopharmacol 2024; 129:111589. [PMID: 38295542 DOI: 10.1016/j.intimp.2024.111589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/18/2024] [Accepted: 01/23/2024] [Indexed: 02/02/2024]
Abstract
The protozoan parasite Leishmania donovani resides within mammalian macrophages and alters its antigen-presenting functions to negatively regulate host-protective T cell responses. This negative regulation of human T cell responses in vitro is attributed to myotubularin-related protein-6 (MTMR6), an ion channel-associated phosphatase. As mouse and human MTMR6 share homology, we studied whether MTMR6 silencing by lentivirally expressed MTMR6shRNA (Lv-MTMR6shRNA) reduced Leishmania growth in macrophages and whether MTMR6 silencing in Leishmania-susceptible BALB/c mice reduced the infection and reinstated host-protective T cell functions. MTMR6 silencing reduced amastigote count and IL-10 production, increased IL-12 expression and, induced IFN-γ-secreting T cells with anti-leishmanial activity in macrophage-T cell co-cultures. Lv-MTMR6shRNA reduced the infection, accompanied by increased IFN-γ expression, in susceptible BALB/c mice. Delays in Lv-MTMR6shRNA treatment by 7 days post-infection significantly reduced the infection suggesting MTMR6 as a plausible therapeutic target. Priming of BALB/c mice with avirulent parasites and Lv-MTMR6shRNA reduced parasite burden in challenge infection. These results indicate that MTMR6 is the first receptor-regulated ion channel-associated phosphatase regulating anti-leishmanial immune responses.
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Affiliation(s)
- Mukesh Kumar Jha
- National Centre for Cell Science, Ganeshkhind, Pune 411 007, India
| | | | | | - Aditya Sarode
- National Centre for Cell Science, Ganeshkhind, Pune 411 007, India
| | - Neelam Bodhale
- National Centre for Cell Science, Ganeshkhind, Pune 411 007, India
| | | | - Subrata Majumdar
- Department of Molecular Medicine, Bose Institute, CIT Scheme VII-M, Kolkata 700054, India.
| | - Bhaskar Saha
- National Centre for Cell Science, Ganeshkhind, Pune 411 007, India.
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6
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Sengupta S, Goswami D, Chakraborty B, Chaudhuri SJ, Ghosh MK, Chatterjee M. Status of B-Lymphocyte Subsets and Their Homing Markers in Patients With Post-Kala-Azar Dermal Leishmaniasis. Parasite Immunol 2024; 46:e13031. [PMID: 38527908 DOI: 10.1111/pim.13031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 03/27/2024]
Abstract
In visceral leishmaniasis, the Type II helper T cell predominance results in B cell modulation and enhancement of anti-leishmanial IgG. However, information regarding its dermal sequel, post-kala-azar dermal leishmaniasis (PKDL), remains limited. Accordingly, this study aimed to elucidate the B cell-mediated antibody-dependent/independent immune profiles of PKDL patients. In the peripheral blood of PKDL patients, immunophenotyping of B cell subsets was performed by flow cytometry and by immunohistochemistry at lesional sites. The functionality of B cells was assessed in terms of skin IgG by immunofluorescence, while the circulating levels of B cell chemoattractants (CCL20, CXCL13, CCL17, CCL22, CCL19, CCL27, CXCL9, CXCL10 and CXCL11) were evaluated by a multiplex assay. In patients with PKDL as compared with healthy controls, there was a significant decrease in pan CD19+ B cells. However, within the CD19+ B cell population, there was a significantly raised proportion of switched memory B cells (CD19+IgD-CD27+) and plasma cells (CD19+IgD-CD38+CD27+). This was corroborated at lesional sites where a higher expression of CD20+ B cells and CD138+ plasma cells was evident; they were Ki67 negative and demonstrated a raised IgG. The circulating levels of B cell chemoattractants were raised and correlated positively with lesional CD20+ B cells. The increased levels of B cell homing markers possibly accounted for their enhanced presence at the lesional sites. There was a high proportion of plasma cells, which accounted for the increased presence of IgG that possibly facilitated parasite persistence and disease progression.
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Affiliation(s)
- Shilpa Sengupta
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, India
| | - Deep Goswami
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, India
| | - Bidhan Chakraborty
- Multidisciplinary Research Unit (MRU), Institute of Postgraduate Medical Education and Research, Kolkata, India
| | - Surya Jyati Chaudhuri
- Department of Microbiology, Sarat Chandra Chattopadhyay Govt. Medical College and Hospital, Uluberia, Howrah, India
| | - Manab K Ghosh
- Department of Tropical Medicine, School of Tropical Medicine, Kolkata, India
| | - Mitali Chatterjee
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, India
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7
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de Franca MNF, Rodrigues LS, Barreto AS, da Cruz GS, Aragão-Santos JC, da Silva AM, de Jesus AR, Palatnik-de-Sousa CB, de Almeida RP, Corrêa CB. CD4 + Th1 and Th17 responses and multifunctional CD8 T lymphocytes associated with cure or disease worsening in human visceral leishmaniasis. Front Immunol 2024; 15:1277557. [PMID: 38410517 PMCID: PMC10895669 DOI: 10.3389/fimmu.2024.1277557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 01/02/2024] [Indexed: 02/28/2024] Open
Abstract
Introduction In VL, a proinflammatory phenotype is typically associated with enhanced phagocytosis and a Th1 mediated immune response resulting in infection control. In contrast, an anti-inflammatory phenotype, associated with a predominant regulatory response, typically enables intracellular multiplication of Leishmania parasites and disease progression. Methods To investigate the impact of chemotherapy on Th2 and Th17 immune responses in patients with visceral leishmaniasis (VL), we assessed all combinations of intracellular expression of IFN-γ, IL-10, IL-4 and IL-17 in the CD4+ and CD8+ T cell populations of peripheral blood mononuclear cell (PBMC) samples from patients, after antigenic stimulation with Leishmania lysate, throughout treatment and follow-up. As increases in spleen and liver sizes and decreases in hematocrit, hemogloblin, erythrocytes, monocytes, leukocytes and platelets levels are strongly related to the disease, we studied the correlations between the frequencies of T cells producing the afore mentioned cytokines, individually and in combination, and these variables, as markers of disease or cure. Results We found that the frequency of IFN-γ-producingCD4+ T cells increased until the end of chemotherapy with Glucantime® or AmBisome ®, while IL-10, IL-4 and IL-17-producing CD4+ T cells peaked on day 7 following the start of treatment. Although the frequency of CD4+IL-17+ cells decreased during treatment an increase was observed after clinical cure. The frequency of CD4+ T cells producing only IFN-γ or IL-17 correlated with blood monocytes levels. Frequencies of double-producers of IFN-γ and IL-10 or IL-4 correlated positively with eosinophils and platelets levels. Together, this suggest that IFN-γ drives the immune response towards Th1 at cure. In contrast, and associated with disease or Th2 response, the frequency of CD4+ IL-10+ cells correlated positively with spleen sizes and negatively with circulating monocyte levels, while the frequency of CD4+ producing both IL-4 and IL-10 correlated negatively with platelets levels. The frequency of CD8+ single-producers of IFN-γ increased from day 21 to 90 while that of single-producers of IL-10 peaked on day 7, of IL-4 on day 30 and of IL-17, on day 180. IFN-γ expression in CD8+ single- and double-producers of cytokines was indicative of an immune response associated with cure. In contrast, frequencies of CD8+ double-producers of IL-4 and IL-10, IL-4 and IL-17 and IL-10 and IL-17 and producers of three and four cytokines, were associated with disease and were low after the cure. Frequencies of CD8+ T cells producing IFN-γ alone or with IL-17 were positively correlated with platelets levels. In contrast, as markers of disease: 1) frequencies of single producers of IL-10 correlated negatively with leukocytes levels, 2) frequencies of double producers of IL-4 and IL-10 correlated negatively with platelet, leukocyte, lymphocyte and circulating monocyte levels, 3) frequencies of triple-producers of IFN-γ, IL-4 and IL-10 correlated negatively with platelet, leukocyte and neutrophil levels and 4) frequencies of producers of IFN-γ, IL-4, IL-10 and IL-17 simultaneously correlated positively with spleen size, and negatively with leukocyte and neutrophil levels. Discussion Our results confirmed that the clinical improvement of VL patients correlates with the decrease of an IL-4 and IL-10 CD4+Th2 response, the recovery of CD4+ Th1 and Th17 responses and the frequency of CD8+ single-producers of IFN-γ and double producers of IFN-γ and IL-17.
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Affiliation(s)
- Mariana Nobre Farias de Franca
- Laboratory of Biology and Immunology of Cancer and Leishmania, Department of Morphology, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Lorranny Santana Rodrigues
- Laboratory of Biology and Immunology of Cancer and Leishmania, Department of Morphology, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Aline Silva Barreto
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Division of Immunology and Molecular Biology Laboratory, University Hospital/Empresa Brasileira de Serviços Hospitalares (EBSERBH), Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Geydson Silveira da Cruz
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Division of Immunology and Molecular Biology Laboratory, University Hospital/Empresa Brasileira de Serviços Hospitalares (EBSERBH), Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - José Carlos Aragão-Santos
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Department of Physical Education, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Angela Maria da Silva
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Department of Medicine, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Amélia Ribeiro de Jesus
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Division of Immunology and Molecular Biology Laboratory, University Hospital/Empresa Brasileira de Serviços Hospitalares (EBSERBH), Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Department of Medicine, Federal University of Sergipe, Immunology Investigative Institute (III), INCT, CNPq, Aracaju, Sergipe, Brazil
| | - Clarisa B. Palatnik-de-Sousa
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Immunology Investigative Institute (III), Insititutos nacionais de Ciência e Tecnologia (INCT), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Rio de Janeiro, Brazil
- Graduate Program in Vegetal Biotechnology and Bioprocesses, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Roque Pacheco de Almeida
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Division of Immunology and Molecular Biology Laboratory, University Hospital/Empresa Brasileira de Serviços Hospitalares (EBSERBH), Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Department of Medicine, Federal University of Sergipe, Immunology Investigative Institute (III), INCT, CNPq, Aracaju, Sergipe, Brazil
| | - Cristiane Bani Corrêa
- Laboratory of Biology and Immunology of Cancer and Leishmania, Department of Morphology, Federal University of Sergipe, Aracaju, Sergipe, Brazil
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
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Morelli LC, de Pita-Pereira D, Britto C, de Araújo-Pereira T, de Souza LAF, Germano KDO, de Andrade AJ, da Costa-Ribeiro MCV. Leishmania (Leishmania) infantum DNA detection in Nyssomyia neivai in Vale do Ribeira, Paraná, Brazil. Mem Inst Oswaldo Cruz 2024; 119:e230173. [PMID: 38324879 PMCID: PMC10836809 DOI: 10.1590/0074-02760230173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/13/2023] [Indexed: 02/09/2024] Open
Abstract
BACKGROUND The incidence of visceral leishmaniasis (VL) has increased in the Southern region of Brazil in recent years, especially in the State of Paraná. New species have been suggested with potential to act as vector in VL endemic areas. OBJECTIVES Identify the Leishmania species in sand fly specimens collected from 2016 to 2018 in the municipality of Itaperuçu, Vale do Ribeira, Paraná, Brazil. METHODS Light traps were used for collections and for the analysis of sand fly were used the multiplex polymerase chain reaction (PCR) methodology and subsequent sequencing. FINDINGS Among the collected specimens, 88.62% were attributed to the species Nyssomyia neivai, which were grouped into 176 pools. Three positive pools were detected: two with Leishmania (Viannia) braziliensis and one with L. (Leishmania) infantum. The positivity rate for the parasite was 0.25% based on the presence of at least one infected insect in the pool. MAIN CONCLUSIONS The detection of L. infantum in Ny. neivai draws attention due to its abundance and anthropophily in the State of Paraná. Moreover, this finding is considered as an alert and suggests that the vector competence of Ny. neivai and the criteria for its incrimination should be carried out, given its wide distribution in southern of Brazil.
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Affiliation(s)
- Letícia Cristina Morelli
- Universidade Federal do Paraná, Programa de Pós-Graduação em Microbiologia, Parasitologia e Patologia, Laboratório de Parasitologia Molecular, Curitiba, PR, Brasil
| | - Daniela de Pita-Pereira
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular e Doenças Endêmicas, Rio de Janeiro, RJ, Brasil
- Centro Universitário Lusíada, São Paulo, SP, Brasil
| | - Constança Britto
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular e Doenças Endêmicas, Rio de Janeiro, RJ, Brasil
| | - Thais de Araújo-Pereira
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular e Doenças Endêmicas, Rio de Janeiro, RJ, Brasil
| | - Lucas Alexandre Farias de Souza
- Universidade Federal do Paraná, Programa de Pós-Graduação em Microbiologia, Parasitologia e Patologia, Laboratório de Parasitologia Molecular, Curitiba, PR, Brasil
| | - Kelly de Oliveira Germano
- Universidade Federal do Paraná, Programa de Pós-Graduação em Microbiologia, Parasitologia e Patologia, Laboratório de Parasitologia Molecular, Curitiba, PR, Brasil
| | - Andrey José de Andrade
- Universidade Federal do Paraná, Programa de Pós-Graduação em Microbiologia, Parasitologia e Patologia, Laboratório de Parasitologia Molecular, Curitiba, PR, Brasil
| | - Magda Clara Vieira da Costa-Ribeiro
- Universidade Federal do Paraná, Programa de Pós-Graduação em Microbiologia, Parasitologia e Patologia, Laboratório de Parasitologia Molecular, Curitiba, PR, Brasil
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9
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Han XY, Li HB, Wei JH, Xu XY, Li Y, Che YQ. Serological characteristics and clinical implications of IgG subclasses in visceral leishmaniasis. Trop Med Int Health 2024; 29:152-160. [PMID: 38158790 DOI: 10.1111/tmi.13960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
OBJECTIVES Visceral leishmaniasis (VL) represents the most severe form of Leishmaniasis infection, often resulting in fatality without timely treatment. Previous studies have found that immunosuppression increases the risk of VL disease progression and mortality, and the total immunoglobulin G (IgG) levels in peripheral blood vary before and after treatment. However, the distinct levels and roles of IgG subclasses in VL have not been documented yet. This study aims to elucidate the characteristics and clinical significance of IgG subclasses in VL. METHODS A total of 43 cases newly-diagnosed with VL were enrolled in the cohort. We measured the levels of IgG subclasses before and after standard treatment and conducted assessments of bone marrow features. In addition, we analysed other haematological indices and examined the variations in IgG subclasses, as well as their correlation with clinical and laboratory factors. RESULTS The levels of total IgG, IgG1, and the ratios of both IgG1/IgG and IgG1/IgG2 decreased significantly after treatment, whereas the ratios of IgG2/ IgG showed an obvious increase. The VL patients without hyperglobulinemia displayed significant lower IgG1/IgG2 ratios, but higher IgG2/IgG ratios compared with those with hyperglobulinemia. In addition, VL patients with positive bone marrow amastigotes had significant higher IgG1/IgG and IgG1/IgG2 ratios, but lower IgG2/IgG ratios. IgG subclasses were correlated with abnormal blood test results, particularly immunological elements including IgM and Complement 4 (C4). CONCLUSIONS IgG1 and IgG2 exhibited contrasting changes after treatment in VL patients. The features of bone marrow and laboratory tests indicated that IgG1 and IgG2 serve different roles in the progression of VL. The ratios of IgG subclasses may be more precise indicators to evaluate immune reaction in VL than traditional total IgG.
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Affiliation(s)
- Xin-Yu Han
- Center for Clinical Laboratory, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Han-Bing Li
- Department of Clinical Laboratory, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Jun-Hao Wei
- Center for Clinical Laboratory, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Xiao-Yong Xu
- Center for Clinical Laboratory, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Yan Li
- Center for Clinical Laboratory, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Yi-Qun Che
- Center for Clinical Laboratory, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
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10
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Devender M, Sebastian P, Maurya VK, Kumar K, Anand A, Namdeo M, Maurya R. Immunogenicity and protective efficacy of tuzin protein as a vaccine candidate in Leishmania donovani-infected BALB/c mice. Front Immunol 2024; 14:1294397. [PMID: 38274802 PMCID: PMC10808571 DOI: 10.3389/fimmu.2023.1294397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
Visceral leishmaniasis (VL) is referred to as the most severe and fatal type of leishmaniasis basically caused by Leishmania donovani and L. infantum. The most effective method for preventing the spread of the disease is vaccination. Till today, there is no promising licensed vaccination for human VL. Hence, investigation for vaccines is necessary to enrich the therapeutic repertoire against leishmaniasis. Tuzin is a rare trans-membrane protein that has been reported in Trypanosoma cruzi with unknown function. However, tuzin is not characterized in Leishmania parasites. In this study, we for the first time demonstrated that tuzin protein was expressed in both stages (promastigote and amastigote) of L. donovani parasites. In-silico studies revealed that tuzin has potent antigenic properties. Therefore, we analyzed the immunogenicity of tuzin protein and immune response in BALB/c mice challenged with the L. donovani parasite. We observed that tuzin-vaccinated mice have significantly reduced parasite burden in the spleen and liver compared with the control. The number of granulomas in the liver was also significantly decreased compared with the control groups. We further measured the IgG2a antibody level, a marker of Th1 immune response in VL, which was significantly higher in the serum of immunized mice when compared with the control. Splenocytes stimulated with soluble Leishmania antigen (SLA) displayed a significant increase in NO and ROS levels compared with the control groups. Tuzin-immunized and parasite-challenged mice exhibit a notable rise in the IFN-γ/IL-10 ratio by significantly suppressing IL-10 expression level, an immunosuppressive cytokine that inhibits leishmanicidal immune function and encourages disease progression. In conclusion, tuzin immunizations substantially increase the protective immune response in L. donovani-challenged mice groups compared with control.
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11
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He J, Zhang J, Liao X, Xiao Y, Li J, Zheng Z, Chen D, Chen J. Upregulation of PD-1/PD-L1 and downregulation of immune signaling pathways lead to more severe visceral leishmaniasis in undernutrition mice. Parasit Vectors 2024; 17:8. [PMID: 38185681 PMCID: PMC10773036 DOI: 10.1186/s13071-023-06018-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 10/16/2023] [Indexed: 01/09/2024] Open
Abstract
BACKGROUND Leishmaniasis is mainly prevalent in tropical and subtropical developing countries, where chronic undernutrition often co-exists. Undernutrition is reported to promote the progression of leishmaniasis, but its immune mechanisms have not been fully elucidated. METHODS To simulate chronic undernutrition of patients in epidemic areas and explore the immune mechanism of undernutrition promoting leishmaniasis, BALB/c mouse models with different nutritional imbalances were established, including undernutrition 75%, undernutrition 65% and obesity mouse models. After infection with Leishmania donovani in these model mice, we focused on evaluating the progress of leishmaniasis in the spleen and liver, the expression of important immunosuppressive and immunoactivation molecules, and changes of spleen transcriptome. The immune signaling pathways enriched by differentially expressed genes and hub genes were analyzed. RESULTS The results showed that among the mouse infection models, undernutrition 75% + infection group had the highest parasite load in the spleen and liver at the 8th week post-infection, possibly due to the continuous increase of PD-1, PD-L1 and TCR. Spleen RNA-seq results suggested that some immune signaling pathways were downregulated in undernutrition 75% + infection group, including neutrophil extracellular trap formation, IL-17 signaling pathway, natural killer cell-mediated cytotoxicity, etc. Among them, neutrophil extracellular trap formation pathway had the largest number of downregulated genes. This also explained why undernutrition 75% + infection group had the highest parasite load. Through PPI network analysis, hub genes such as Lcn2, Ltf, Mpo, Dnaja1, Hspa1a, Hspa1b and Hsph1 were screened out and might play important roles in the process of undernutrition promoting leishmaniasis. CONCLUSIONS Undernutrition upregulated PD-1 and PD-L1 expression and downregulated immune signaling pathways in mice with visceral leishmaniasis. The signaling pathways and hub genes may serve as drug targets or intervention targets for the treatment of leishmaniasis patients with undernutrition.
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Affiliation(s)
- Jinlei He
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Jianhui Zhang
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Xuechun Liao
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Yuying Xiao
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Jiao Li
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Zhiwan Zheng
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Dali Chen
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China.
| | - Jianping Chen
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China.
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12
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de Carvalho CA, Hiramoto RM, Meireles LR, de Andrade HF. Understanding hypergammaglobulinemia in experimental or natural visceral leishmaniasis. Parasite Immunol 2024; 46:e13021. [PMID: 38275197 DOI: 10.1111/pim.13021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024]
Abstract
Nonspecific hypergammaglobulinemia (HGG) occurs in symptomatic human visceral leishmaniasis (VL) caused by L. L. infantum. This study assessed this finding in experimental infection in hamsters and natural infection in dogs. The serum concentration of proteins, albumin and globulins was determined through the biuret and bromocresol green reaction, where the HGG was better expressed through the albumin/globulin (A/G) ratio. HGG was associated with a higher concentration of specific anti-glycan antibodies (BSA-G)/promastigote soluble extract (PSE) and the presence of circulating immune complexes (IC) by dissociative enzyme-linked immunoassay (ELISA). The study found monovalent IC in 37.9% (PSE) and 50% (BSA-G) of sera from infected hamsters, with increased frequency as the disease progressed. HGG was found in >60% of the samples in dogs with VL, associated with higher levels of specific immunoglobulin (Ig)A and IgM, but not IgG, determined using the PSE and BSA-G ELISA. HGG was associated with the presence of monovalent IC in 58.9% (PSE) and 63.4% (BSA-G) positive dog samples. HGG may result not only from the nonspecific activation of B cells, with greater production of specific and nonspecific antibodies, but also due to lower IgG excretion due to the presence of soluble monovalent IC. HGG correlates to the progression of VL and may be a marker for manifested disease.
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Affiliation(s)
- Camila Aparecida de Carvalho
- Laboratório de Protozoologia IMTSP, Departamento de Patologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | | | - Luciana Regina Meireles
- Laboratório de Protozoologia IMTSP, Departamento de Patologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Heitor Franco de Andrade
- Laboratório de Protozoologia IMTSP, Departamento de Patologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
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Chakrabarti A, Bansal R, Mondal A, Upadhyay P, Gupta A, Verma P, Garg S, Pati S, Singh S. Epithelial homelessness: an atypical form of anoikis triggered by Leishmania interaction with epithelial cells. Future Microbiol 2024; 19:33-49. [PMID: 37830931 DOI: 10.2217/fmb-2023-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 08/25/2023] [Indexed: 10/14/2023] Open
Abstract
Aim: Leishmaniasis is characterized by a spectrum of diseases with two main clinical forms, cutaneous and visceral, caused by Leishmania tropica and Leishmania donovani, respectively. Studying Leishmania's interaction with the epithelial barrier at the initial site of a bite is crucial to understanding the establishment of the disease. Materials & methods: To discern parasite-host epithelial interaction, we developed in vitro cellular models involving co-cultures of Leishmania and MDCK epithelial cells. Results: Both L. donovani-MDCK and L. tropica-MDCK co-culture models demonstrated a phenomenon known as atypical anoikis apoptosis, typically identified by distinctive 'flipping in' of cell membranes and disordered cytoskeletal frameworks. Conclusion: This study bridges the gap in the fundamental understanding of the intricate latticework involving vector-Leishmania-host and may inform drug development strategies.
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Affiliation(s)
- Amrita Chakrabarti
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, 201314, India
| | - Ruby Bansal
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Abir Mondal
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, 201314, India
| | - Prince Upadhyay
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, 201314, India
| | - Aashima Gupta
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pritee Verma
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Swati Garg
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Soumya Pati
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, 201314, India
| | - Shailja Singh
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
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14
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Singh A, Mahapatra B, Banerjee A, Singh S, Singh S, Dubey VK, Das P, Singh RK. Leishmania antigens activated CD4 + T cells expressing CD200R receptors are the prime IL-10 producing phenotype and an important determinant of visceral leishmaniasis pathogenesis. Cytokine 2024; 173:156435. [PMID: 37950929 DOI: 10.1016/j.cyto.2023.156435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/02/2023] [Accepted: 11/05/2023] [Indexed: 11/13/2023]
Abstract
The excessive production of IL-10, an anti-inflammatory cytokine, by Leishmania antigen-activated T cells is supposed to be a key player in the onset and progression of visceral leishmaniasis (VL). The IL-10-producing sources in VL remain unidentified and uncharacterized. In this study, we reveal that antigen-activated CD4+ T cells, i.e., CD44+CD4+ T cells expressing CD200R receptors, are the prime IL-10-producing phenotypes in Leishmania donovani infection-induced pathogenesis. These phenotypes are separate from CD25+Foxp3+CD4+ T regulatory cells, which are classical IL-10-producing phenotypes. In order to ascertain the role of CD200R and CD25 receptors in IL-10 overexpression-associated VL pathogenesis, we abrogated CD200R and CD25 receptor-mediated signaling in the infected mice. The splenic load of parasites and the size of the liver and spleen were significantly reduced in CD200-blocked mice as compared to CD25-blocked mice. Further, the CD200 blocking polarized CD4+ T cells to pro-inflammatory cytokines-producing phenotypes, as we observed a higher frequency of IFN-γ, TNF-α, and IL-12 positive cells as compared to controls including the CD25 blocking. Our findings suggest that in L. donovani infection-induced pathogenesis the expression of CD200R on antigen-activated T cells helps them to acquire IL-10-producing abilities as part of its one of the survival strategies. However, more studies would be warranted to better understand CD200R receptors role in VL pathogenesis and to develop the next generation of therapeutic and prophylactic control measures.
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Affiliation(s)
- Abhishek Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Baishakhi Mahapatra
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Arpita Banerjee
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Samer Singh
- Centre for Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, India
| | - Sangram Singh
- Department of Biochemistry, Faculty of Science, Dr. RMLA University, Ayodhya 224001, India
| | - Vikash K Dubey
- Department of Biochemical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi 221 005, India
| | - Pradeep Das
- ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal 700010, India
| | - Rakesh K Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India.
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Mitchell PD. Parasites in ancient Egypt and Nubia: Malaria, schistosomiasis and the pharaohs. Adv Parasitol 2023; 123:23-49. [PMID: 38448147 DOI: 10.1016/bs.apar.2023.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
The civilizations of ancient Egypt and Nubia played a key role in the cultural development of Africa, the Near East, and the Mediterranean world. This study explores how their location along the River Nile, agricultural practices, the climate, endemic insects and aquatic snails impacted the type of parasites that were most successful in their populations. A meta-analysis approach finds that up to 65% of mummies were positive for schistosomiasis, 40% for headlice, 22% for falciparum malaria, and 10% for visceral leishmaniasis. Such a disease burden must have had major consequences upon the physical stamina and productivity of a large proportion of the workforce. In contrast, the virtual absence of evidence for whipworm and roundworm (so common in adjacent civilizations in the Near East and Europe) may have been a result of the yearly Nile floods fertilising the agricultural land, so that farmers did not have to fertilise their crops with human faeces.
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Affiliation(s)
- Piers D Mitchell
- Department of Archaeology, University of Cambridge, The Henry Wellcome Building, Fitzwilliam Street, Cambridge, United Kingdom.
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16
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Divenuto F, Marascio N, Quirino A, Giancotti A, Filice S, Gigliotti S, Campolo MP, Campolo M, Barreca GS, Lamberti AG, Castelli G, Bruno F, Matera G. Cellular mediators in human leishmaniasis: Critical determinants in parasite killing or disease progression. Acta Trop 2023; 248:107037. [PMID: 37805040 DOI: 10.1016/j.actatropica.2023.107037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/29/2023] [Accepted: 10/04/2023] [Indexed: 10/09/2023]
Abstract
Data on cellular immunity mediators in the early phase of human leishmaniasis are still limited and controversial. In order to mimic the changes of humoral mediators during the early phase of human natural infection, some Th1, Th2, Treg, and Breg cytokines, MCP-1, and the nitric oxide (NO) from human PBMC, stimulated by Leishmania infantum, Leishmania major, Leishmania donovani and Leishmania tropica infective metacyclic promastigotes, were determined. After 4 h of L. major, L. donovani, and L. tropica challenge, TNFα, IL-1β, IL-6 levels were significantly higher than negative control cultures with saline (SF) instead of Leishmania promastigotes, unlike L. infantum-stimulated TNFα and L. major-stimulated IL-1β. We obtained higher levels of IL-4 and IL-10 cytokines after stimulation of human PBMCs by L. infantum and L. donovani, compared to those observed after the challenge of PBMCs by L. major and L. tropica. Regarding IL-35, such cytokine levels were significantly increased following infection with L. infantum and L. donovani, in contrast to L. major and L. tropica. Up to our knowledge, we are the first to study the effect of four different species of Leishmania on IL-35 levels in human cells. Our study highlights how several Leishmania species can up-regulate different groups of cytokines (Th1, Th2, Treg and Breg) and modulate NO release in a different way. This original aspect can be explained by different Leishmania cell products, such as LPG, obtained from different strains/species of live parasites. Our findings would contribute to the development of new therapeutics or vaccination strategies.
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Affiliation(s)
- F Divenuto
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - N Marascio
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - A Quirino
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy.
| | - A Giancotti
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - S Filice
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - S Gigliotti
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - M P Campolo
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - M Campolo
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - G S Barreca
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - A G Lamberti
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
| | - G Castelli
- National Reference Center for Leishmaniasis (C.Re.Na.L.), Istituto Zooprofilattico Sperimentale della Sicilia, 90129 Palermo, Italy
| | - F Bruno
- National Reference Center for Leishmaniasis (C.Re.Na.L.), Istituto Zooprofilattico Sperimentale della Sicilia, 90129 Palermo, Italy
| | - G Matera
- Clinical Microbiology Unit, Department of Health Sciences, "Magna Græcia" University of Catanzaro, 88100 Catanzaro, Italy
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17
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Bernardo L, Solana JC, Sánchez C, Torres A, Reyes-Cruz EY, Carrillo E, Moreno J. Immunosuppressants alter the immune response associated with Glucantime ® treatment for Leishmania infantum infection in a mouse model. Front Immunol 2023; 14:1285943. [PMID: 38106411 PMCID: PMC10722182 DOI: 10.3389/fimmu.2023.1285943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023] Open
Abstract
Background Immunosuppression is a major risk factor for the development of visceral leishmaniasis (VL). The number of patients receiving immunosuppressant drugs such as TNF antagonist (anti-TNF) and methotrexate (MTX) is increasing. In these patients, VL is more severe, their response to treatment poorer, and they are at higher risk of relapse, a consequence (largely) of the poor and inappropriate immune response they develop. Objectives To examine the effect of immunosuppressive treatment on the host immune response and thus gain insight into the reduced efficacy of pentavalent antimonials in these patients. Experiments were performed using BALB/c mice immunosuppressed with anti-TNF or MTX, infected with Leishmania infantum promastigotes, and then treated with Glucantime® at clinical doses. Results Immunosuppression with both agents impeded parasite elimination from the spleen and bone marrow. Low pro-inflammatory cytokine production by CD4+ and CD8+ T cells was detected, along with an increase in PD-1 and IL-10 expression by B and T cells in the immunosuppressed groups after treatment. Conclusion The immunosuppressed mice were unable to develop specific cellular immunity to the parasite, perhaps explaining the greater risk of VL relapse seen in pharmacologically immunosuppressed human patients.
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Affiliation(s)
- Lorena Bernardo
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | - Jose Carlos Solana
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | - Carmen Sánchez
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda, Spain
| | - Ana Torres
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | - Eder Yaveth Reyes-Cruz
- LADISER Immunology and Molecular Biology, Faculty of Chemical Sciences, Universidad Veracruzana, Orizaba, Veracruz, Mexico
| | - Eugenia Carrillo
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | - Javier Moreno
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
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18
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Singh R, Anand A, Mahapatra B, Saini S, Singh A, Singh S, Kumar V, Das P, Singh S, Singh RK. Adjuvantation of whole-killed Leishmania vaccine with anti-CD200 and anti-CD300a antibodies potentiates its efficacy and provides protection against wild-type parasites. Mol Immunol 2023; 163:136-146. [PMID: 37778149 DOI: 10.1016/j.molimm.2023.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/17/2023] [Accepted: 09/17/2023] [Indexed: 10/03/2023]
Abstract
One of the major reasons behind the limited success of vaccine candidates against all forms of leishmaniasis is the inability of parasitic antigens to induce robust cell-mediated immunity and immunological memory. Here we find, for the first time, that the adjuvantation of whole-killed Leishmania vaccine (Leishvacc) with anti-CD200 and anti-CD300a antibodies enhances CD4+ T cells mediated immunity in vaccinated mice and provides protection against wild-type parasites. The antibody adjuvantation, either alone or with a TLR4 agonist monophosphoryl A (MPL-A), induced the production of pro-inflammatory cytokines viz., IFN-γ, TNF-α, and IL-2 by antigen experienced CD4+ T cells, and also enhanced their rate of conversion into their memory phenotypes against Leishvacc antigens. The antibody adjuvanted vaccine also promoted the generation of IgG2a-mediated protective humoral immunity in vaccinated mice. Further, the mice vaccinated with antibodies adjuvanted vaccine showed strong resilience against metacyclic forms of L. donovani parasites as we observed reduced clinical features such as splenomegaly, hepatomegaly, granulomatous tissues in the liver, and parasitic load in their spleen. The findings of this study demonstrate that the anti-CD200 and anti-CD300a antibodies have potential to increase the protective efficacy of the whole-killed Leishmania vaccine, and opens up a new gateway to diversify the roles of immune checkpoints in vaccine development against leishmaniasis.
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Affiliation(s)
- Rajan Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anshul Anand
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Baishakhi Mahapatra
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Shashi Saini
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Abhishek Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Samer Singh
- Centre of Experimental Medicine and Surgery, Institute of Medical Science, Banaras Hindu University, Varanasi 221005, India
| | - Vinod Kumar
- Department of Molecular Biology, Rajendra Memorial Research Institute, Patna 800007, Bihar, India
| | - Pradeep Das
- ICMR-National Institute of Cholera and Enteric Diseases, Kolkata 700010, WB, India
| | - Sangram Singh
- Department of Biochemistry, Faculty of Science, Dr. RMLA University, Ayodhya 224001, India
| | - Rakesh K Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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19
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Estabrooks KL, De Silva K, Survela L, Stevenson WS. Haemophagocytic lymphohistiocytosis due to leishmaniasis following anti-tumour necrosis factor-alpha therapy. Br J Haematol 2023; 203:497-498. [PMID: 37770023 DOI: 10.1111/bjh.19118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Affiliation(s)
- Kristen L Estabrooks
- Department of Haematology, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Keshani De Silva
- Department of Anatomical Pathology, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Lesley Survela
- Department of Haematology, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - William S Stevenson
- Department of Haematology, Royal North Shore Hospital, Sydney, New South Wales, Australia
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20
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Higgins E, Yuan J, Lange S, Boilson BA, Pritt BS, Rizza SA. Fever, Cough, and Pancytopenia in a Transplant Recipient. Clin Infect Dis 2023; 77:1065-1067. [PMID: 37796055 DOI: 10.1093/cid/ciad167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023] Open
Affiliation(s)
- Eibhlin Higgins
- Division of Public Health, Infectious Diseases and Occupational Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Ji Yuan
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Sawyer Lange
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Barry A Boilson
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - Bobbi S Pritt
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Stacey A Rizza
- Division of Public Health, Infectious Diseases and Occupational Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Nayakarathna N, Gunathilaka R, Ganehiarachchi G. Distribution of Phlebotomus argentipes Annandale & Brunetti, 1908 in the Anuradhapura district, North Central Sri Lanka. J Vector Borne Dis 2023; 60:427-431. [PMID: 38174521 DOI: 10.4103/0972-9062.383638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024] Open
Abstract
Background & objectives Phlebotomus argentipes Annandale & Brunetti, 1908 (Diptera: Psychodidae) is the main vector responsible for the transmission of Leishmania donovani (Laveran & Mesnil, 1903) Ross, 1903 in the subcontinent of India. It is the potential vector of cutaneous leishmaniasis in Sri Lanka. The present study determined ecological factors that influence the abundance of P. argentipes in areas with high disease prevalence in the Anuradhapura district, North Central Sri Lanka. Methods CDC light traps and yellow sticky traps were used for sampling, and abundance was recorded throughout 12 months with selected environmental parameters namely, relative humidity, wind speed, and temperature. The relationships between the abundance of P. argentipes with mean temperature, % relative humidity, and wind speed were tested with regression analysis. The temporal distribution of the vector population was tested with a time series analysis. Results The study identified the most preferable microhabitats of P. argentipes: shrubs, unclear areas, gardening areas, wet soil areas with leaf litter, and termite hills. The results indicated that the abundance of P. argentipes was highly dependent on mean temperature (P = 0.00, R2 = 68%), and a high number of P. argentipes was recorded for a low mean temperature range of 24.7-27.3°C. Furthermore, the abundance of P. argentipes exhibited an increasing trend with high humidity levels of 72-88% (P = 0.00, R2 = 91.6%). Interpretation & conclusion These findings may help predict the temporal variation of the potential vector population with studied ecological parameters and contribute to a successful vector management strategy with thorough knowledge of the behavioral pattern of P. argentipes.
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Affiliation(s)
- Nmng Nayakarathna
- Department of Zoology and Environmental Management, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka
| | - Rakm Gunathilaka
- Department of Zoology and Environmental Management, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka
| | - Gasm Ganehiarachchi
- Department of Zoology and Environmental Management, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka
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Vaziri VM, Behniafar H, Spotin A, Absavarand A, Badakhshan M. Molecular Detection of Leishmania in Wild Caught Sand Flies of Larroussius Subgenus in Iran: Combined Use of Internal and External Morphological Characters as a Mean to Differentiate Morphologically Similar Females. Acta Parasitol 2023; 68:520-526. [PMID: 37328624 DOI: 10.1007/s11686-023-00690-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 05/29/2023] [Indexed: 06/18/2023]
Abstract
OBJECTIVE Phlebotomine sand flies are the primary vectors of leishmaniasis; visceral form of disease is transmitted mainly by species belonging to Larroussius and Adlerius subgenus. Species identification of some females in Larroussius subgenus is not easy due to the high similarity. Accurate species identification enables control operations to target only main vectors and increase understanding of ecological needs, bionomic characteristics, and behavioral traits. The purpose of current study was to use two approaches based on internal and external morphological characters to identify the wild caught of female specimens belonged to Larroussius subgenus and investigate Leishmania infection. METHODS Totally, 128 specimens belonging to Larroussius' subgenus were collected from a VL focus in northwestern Iran, species differentiation was done by two approaches proposed in literature: (1) characters of pharyngeal armature, number of Spermathecal segment, length of spermathecal neck, palpal and ascoid formulae; (2) blindly on the basis of the shape of the base of spermathecal duct. Their potential infection to Leishmania was investigated by kDNA-Nested-PCR. RESULTS The results of species identification were consistent based on two methods. Among three identified species, Phlebotomus perfiliewi was found to be the dominant species, followed by Ph. neglectus and Ph. tobbi. Two specimens of Ph. perfiliewi were found to be infected by Leishmania infantum, which emphasizes the role of this species in VL transmission in study area. CONCLUSION It is suggested that combination of the characters used here be considered for species identification of female of Larroussius subgenus to take advantage of maximum characters, especially where species present sympatrically.
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Affiliation(s)
- Vahideh Moin Vaziri
- Department of Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Hamed Behniafar
- Department of Medical Parasitology, Sarab Faculty of Medical Sciences, Sarab, Iran
| | - Adel Spotin
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azad Absavarand
- Department of Medical Entomology and Vector Control, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mehdi Badakhshan
- Department of Medical Entomology and Vector Control, School of Public Health, Urmia University of Medical Sciences, Urmia, Iran
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23
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Yuan D, Chen J, Zhao Z, Qin H. Metabolomics analysis of visceral leishmaniasis based on urine of golden hamsters. Parasit Vectors 2023; 16:304. [PMID: 37649093 PMCID: PMC10469881 DOI: 10.1186/s13071-023-05881-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/12/2023] [Indexed: 09/01/2023] Open
Abstract
BACKGROUND Leishmaniasis is one of the most neglected tropical diseases and is spread mainly in impoverished regions of the world. Although many studies have focused on the host's response to Leishmania invasion, relatively less is known about the complex processes at the metabolic level, especially the metabolic alterations in the infected hosts. METHODS In this study, we conducted metabolomics analysis on the urine of golden hamsters in the presence or absence of visceral leishmaniasis (VL) using the ultra-performance liquid chromatography (UPLC) system tandem high-resolution mass spectrometer (HRMS). The metabolic characteristics of urine samples, along with the histopathological change and the parasite burden of liver and spleen tissues, were detected at 4 and 12 weeks post infection (WPI), respectively. RESULTS Amino acid metabolism was extensively affected at both stages of VL progression. Meanwhile, there were also distinct metabolic features at different stages. At 4 WPI, the significantly affected metabolic pathways involved alanine, aspartate and glutamate metabolism, the pentose phosphate pathway (PPP), histidine metabolism, tryptophan metabolism and tyrosine metabolism. At 12 WPI, the markedly enriched metabolic pathways were almost concentrated on amino acid metabolism, including tyrosine metabolism, taurine and hypotaurine metabolism and tryptophan metabolism. The dysregulated metabolites and metabolic pathways at 12 WPI were obviously less than those at 4 WPI. In addition, seven metabolites that were dysregulated at both stages through partial least squares-discriminant analysis (PLS-DA) and receiver-operating characteristic (ROC) tests were screened to be of diagnostic potential. The combination of these metabolites as a potential biomarker panel showed satisfactory performance in distinguishing infection groups from control groups as well as among different stages of infection. CONCLUSION Our findings could provide valuable information for further understanding of the host response to Leishmania infection from the aspect of the urine metabolome. The proposed urine biomarker panel could help in the development of a novel approach for the diagnosis and prognosis of VL.
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Affiliation(s)
- Dongmei Yuan
- Department of Human Anatomy, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Jianping Chen
- Department of Pathogenic Biology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Zhiwei Zhao
- Department of Human Anatomy, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China.
| | - Hanxiao Qin
- Clinical Trial Center, Chengdu Second People's Hospital, Chengdu, 610021, Sichuan, People's Republic of China.
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Mas A, Hurtado-Morillas C, Martínez-Rodrigo A, Orden JA, de la Fuente R, Domínguez-Bernal G, Carrión J. A Tailored Approach to Leishmaniases Vaccination: Comparative Evaluation of the Efficacy and Cross-Protection Capacity of DNA vs. Peptide-Based Vaccines in a Murine Model. Int J Mol Sci 2023; 24:12334. [PMID: 37569710 PMCID: PMC10418836 DOI: 10.3390/ijms241512334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Zoonotic leishmaniases are a worldwide public health problem for which the development of effective vaccines remains a challenge. A vaccine against leishmaniases must be safe and affordable and should induce cross-protection against the different disease-causing species. In this context, the DNA vaccine pHisAK70 has been demonstrated to induce, in a murine model, a resistant phenotype against L. major, L. infantum, and L. amazonensis. Moreover, a chimeric multiepitope peptide, HisDTC, has been obtained by in silico analysis from the histone proteins encoded in the DNA vaccine and has showed its ability to activate a potent CD4+ and CD8+ T-cell protective immune response in mice against L. infantum infection. In the present study, we evaluated the plasmid DNA vaccine pHisAK70 in comparison with the peptide HisDTC (with and without saponin) against L. major and L. infantum infection. Our preliminary results showed that both formulations were able to induce a potent cellular response leading to a decrease in parasite load against L. infantum. In addition, the DNA candidate was able to induce better lesion control in mice against L. major. These preliminary results indicate that both strategies are potentially effective candidates for leishmaniases control. Furthermore, it is important to carry out such comparative studies to elucidate which vaccine candidates are the most appropriate for further development.
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Affiliation(s)
- Alicia Mas
- INMIVET Group, Animal Health Department, Veterinary School, Universidad Complutense Madrid, 28040 Madrid, Spain
| | - Clara Hurtado-Morillas
- INMIVET Group, Animal Health Department, Veterinary School, Universidad Complutense Madrid, 28040 Madrid, Spain
| | - Abel Martínez-Rodrigo
- INMIVET Group, Animal Science Department, Veterinary School, Universidad Complutense Madrid, 28040 Madrid, Spain
| | - José A. Orden
- INMIVET Group, Animal Health Department, Veterinary School, Universidad Complutense Madrid, 28040 Madrid, Spain
| | - Ricardo de la Fuente
- INMIVET Group, Animal Health Department, Veterinary School, Universidad Complutense Madrid, 28040 Madrid, Spain
| | - Gustavo Domínguez-Bernal
- INMIVET Group, Animal Health Department, Veterinary School, Universidad Complutense Madrid, 28040 Madrid, Spain
| | - Javier Carrión
- INMIVET Group, Animal Health Department, Veterinary School, Universidad Complutense Madrid, 28040 Madrid, Spain
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25
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Andrade DC, Lima AFVDA, Jeraldo VDLS, de Melo CM, Pinto MC, Madi RR. Phlebotominae Fauna (Diptera: Psychodidae) and the Spatial Distribution of Species in Sergipe, Brazil. J Med Entomol 2023; 60:401-407. [PMID: 36462189 DOI: 10.1093/jme/tjac180] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Indexed: 06/17/2023]
Abstract
Some sand fly species are the vectors responsible for the transmission of Leishmania spp. (Kinetoplastida: Trypanosomatidae), the etiological agent of leishmaniasis, and in the state of Sergipe, the two main forms of the disease (visceral and cutaneous) are recorded. Few works show information about the species that form the Phlebotominae fauna in Sergipe. This study aimed to update and determine how they are distributed throughout the state. The study used data from surveys about phlebotomines in Sergipe, from the Program of Surveillance and Control of Visceral Leishmaniasis, carried out by the Central Public Health Laboratory of Sergipe, from 2008 to 2018, along with review and original data from 2022. The commentary on this information was developed with focus on the species that can be vectors for the disease. Sergipe has, up to now, 27 registered species of phlebotomines from 12 genera, 15 of them are of sanitary relevance. Twenty two of these species are in the mesoregion East, 19 in the Agreste, and 11 in the Sertão of Sergipe. The species with the greatest distribution was Evandromyia lenti (Mangabeira, 1938), present in 74.6% of the municipalities of Sergipe, followed by Lutzomyia longipalpis (Lutz & Neiva, 1912), the main vector of the etiological agent of visceral leishmaniasis in Brazil, present in 68% of the municipalities studied. This study expands the number and distribution of species recorded in the state. This information can contribute to disease containment plans and support health education actions aimed at the control of leishmaniasis in Sergipe.
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Affiliation(s)
- David Campos Andrade
- Tiradentes University - UNIT, Post-Graduation Program in Health and Environment, Av. Murilo Dantas, 300, 49032-490, Aracaju, Sergipe, Brazil
| | - Antônio Fernando Viana de Assis Lima
- State Health Secretariat of Sergipe, Central Laboratory of Public Health of Sergipe (LACEN-SE), Entomology Laboratory, R. Campo do Brito, 551 - Salgado Filho, 49020-590, Aracaju, Brazil
| | - Verónica de Lourdes Sierpe Jeraldo
- Tiradentes University - UNIT, Post-Graduation Program in Health and Environment, Av. Murilo Dantas, 300, 49032-490, Aracaju, Sergipe, Brazil
- Research and Technology Institute - ITP, Av. Murilo Dantas, 300, 49032-490, Aracaju, Sergipe, Brazil
| | - Cláudia Moura de Melo
- Tiradentes University - UNIT, Post-Graduation Program in Health and Environment, Av. Murilo Dantas, 300, 49032-490, Aracaju, Sergipe, Brazil
- Research and Technology Institute - ITP, Av. Murilo Dantas, 300, 49032-490, Aracaju, Sergipe, Brazil
| | - Mara Cristina Pinto
- São Paulo State University, UNESP, School of Pharmaceutical Sciences, Rodovia Araraquara Jaú, Km 01 - s/n, 14800-903, Araraquara, São Paulo, Brazil
| | - Rubens Riscala Madi
- Tiradentes University - UNIT, Post-Graduation Program in Health and Environment, Av. Murilo Dantas, 300, 49032-490, Aracaju, Sergipe, Brazil
- Research and Technology Institute - ITP, Av. Murilo Dantas, 300, 49032-490, Aracaju, Sergipe, Brazil
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Mazumder S, Sinha A, Ghosh S, Sharma GC, Prusty BM, Manna D, Pal D, Pal C, Dasgupta S. Leishmania LPG interacts with LRR5/LRR6 of macrophage TLR4 for parasite invasion and impairs the macrophage functions. Pathog Dis 2023; 81:ftad019. [PMID: 37604789 DOI: 10.1093/femspd/ftad019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 08/14/2023] [Accepted: 08/18/2023] [Indexed: 08/23/2023] Open
Abstract
Visceral leishmaniasis (VL) is a severe form of leishmaniasis, primarily affecting the poor in developing countries. Although several studies have highlighted the importance of toll-like receptors (TLRs) in the pathophysiology of leishmaniasis, the role of specific TLRs and their binding partners involved in Leishmania donovani uptake are still elusive. To investigate the mechanism of L. donovani entry inside the macrophages, we found that the parasite lipophosphoglycan (LPG) interacted with the macrophage TLR4, leading to parasite uptake without any significant alteration of macrophage cell viability. Increased parasite numbers within macrophages markedly inhibited lipopolysachharide-induced pro-inflammatory cytokines gene expression. Silencing of macrophage-TLR4, or inhibition of parasite-LPG, significantly stemmed parasite infection in macrophages. Interestingly, we observed a significant enhancement of macrophage migration, and generation of reactive oxygen species (ROS) in the parasite-infected TLR4-silenced macrophages, whereas parasite infection in TLR4-overexpressed macrophages exhibited a notable reduction of macrophage migration and ROS generation. Moreover, mutations in the leucine-rich repeats (LRRs), particularly LRR5 and LRR6, significantly prevented TLR4 interaction with LPG, thus inhibiting cellular parasite entry. All these results suggest that parasite LPG recognition by the LRR5 and LRR6 of macrophage-TLR4 facilitated parasite entry, and impaired macrophage functions. Therefore, targeting LRR5/LRR6 interactions with LPG could provide a novel option to prevent VL.
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Affiliation(s)
- Sayani Mazumder
- Metabolic Disease Biology Laboratory, Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India
| | - Archana Sinha
- Metabolic Disease Biology Laboratory, Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India
| | - Sanhita Ghosh
- Cellular Immunology and Vector Molecular Biology Laboratory, Department of Zoology, West Bengal State University, Barasat 700126, West Bengal, India
| | - Gurumayum Chourajit Sharma
- Metabolic Disease Biology Laboratory, Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India
| | - Biswa Mohan Prusty
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Durba Pal
- Department of Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India
| | - Chiranjib Pal
- Cellular Immunology and Vector Molecular Biology Laboratory, Department of Zoology, West Bengal State University, Barasat 700126, West Bengal, India
| | - Suman Dasgupta
- Metabolic Disease Biology Laboratory, Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India
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Warusavithana S, Atta H, Osman M, Hutin Y. Review of the neglected tropical diseases programme implementation during 2012–2019 in the WHO-Eastern Mediterranean Region. PLoS Negl Trop Dis 2022; 16:e0010665. [PMID: 36173943 PMCID: PMC9521802 DOI: 10.1371/journal.pntd.0010665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction The 2012–2020 WHO NTD roadmap set targets for control, elimination, and eradication of neglected tropical diseases (NTDs). It recommends 5 strategies, out of which preventive chemotherapy (PC) and intensified disease management were key to achieve targets. WHO estimated that globally, between 2012 and 2019, the number of persons affected by NTDs decreased from nearly 2.1 to 1.7 billion people. We analysed the situation of NTDs in the WHO Eastern Mediterranean Region (EMR) in 2020 to assess the progress with the 2012–2020 roadmap and to identify gaps. Methods We reviewed data repositories of national data sources for 2012 to 2019 including the Global Indicator Data Platform for Sustainable Development Goals, the Global Health Observatory data repository, the WHO PC databank, and the EMR data repository. We allocated countries a Red-Amber-Green (RAG) rating based on standardized criteria, on progress and current situation of each of 11 priority NTDs. Results All 22 countries in EMR were affected by 1 or more autochthonous or imported NTDs. In 2019, WHO estimated that in EMR, 78 million people required interventions for NTDs, a 38% decline compared with 2012. Twelve of 22 countries needed priority public health action (i.e., red) for 1 or more NTD. Of these, Sudan needed priority public health action for 6 NTDs and Yemen for 5. Eleven countries also needed priority public health action for cutaneous leishmaniasis, and 5 countries for rabies and trachoma. Visceral leishmaniasis is on the increase in Afghanistan, Libya, Syria, and Yemen. Conclusion Since the first roadmap of NTDs in 2012, the EMR has made a substantial progress. Nevertheless, many challenges remain in the prevention and control of NTDs. EMR needs a regional approach to control NTDs in countries most affected and a coordinated strategy to stop the continuing increase of cutaneous leishmaniasis and a possible resurgence of visceral leishmaniasis.
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Affiliation(s)
- Supriya Warusavithana
- Department of Universal Health Coverage/Communicable Diseases Prevention and Control, WHO EMRO Eastern Mediterranean Regional Office, World Health Organization, Cairo, Egypt
| | - Hoda Atta
- Department of Universal Health Coverage/Communicable Diseases Prevention and Control, WHO EMRO Eastern Mediterranean Regional Office, World Health Organization, Cairo, Egypt
| | - Mona Osman
- Department of Universal Health Coverage/Communicable Diseases Prevention and Control, WHO EMRO Eastern Mediterranean Regional Office, World Health Organization, Cairo, Egypt
- * E-mail: ,
| | - Yvan Hutin
- Department of Universal Health Coverage/Communicable Diseases Prevention and Control, WHO EMRO Eastern Mediterranean Regional Office, World Health Organization, Cairo, Egypt
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Moreira MDL, Borges-Fernandes LO, Pascoal-Xavier MA, Ribeiro ÁL, Pereira VHS, Pediongco T, Araújo MSDS, Teixeira-Carvalho A, de Carvalho AL, Mourão MVA, Campos FA, Borges M, Carneiro M, Chen Z, Saunders E, McConville M, Tsuji M, McCluskey J, Martins-Filho OA, Eckle SBG, Coelho-dos-Reis JGA, Peruhype-Magalhães V. The role of mucosal-associated invariant T cells in visceral leishmaniasis. Front Immunol 2022; 13:926446. [PMID: 36189274 PMCID: PMC9521739 DOI: 10.3389/fimmu.2022.926446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 08/15/2022] [Indexed: 11/29/2022] Open
Abstract
Mucosal-associated invariant T (MAIT) cells are restricted by MR1 and are known to protect against bacterial and viral infections. Our understanding of the role of MAIT cells in parasitic infections, such as visceral leishmaniasis (VL) caused by protozoan parasites of Leishmania donovani, is limited. This study showed that in response to L. infantum, human peripheral blood MAIT cells from children with leishmaniasis produced TNF and IFN-γ in an MR1-dependent manner. The overall frequency of MAIT cells was inversely correlated with alanine aminotransferase levels, a specific marker of liver damage strongly associated with severe hepatic involvement in VL. In addition, there was a positive correlation between total protein levels and the frequency of IL-17A+ CD8+ MAIT cells, whereby reduced total protein levels are a marker of liver and kidney damage. Furthermore, the frequencies of IFN-γ+ and IL-10+ MAIT cells were inversely correlated with hemoglobin levels, a marker of severe anemia. In asymptomatic individuals and VL patients after treatment, MAIT cells also produced IL-17A, a cytokine signature associated with resistance to visceral leishmaniasis, suggesting that MAIT cells play important role in protecting against VL. In summary, these results broaden our understanding of MAIT-cell immunity to include protection against parasitic infections, with implications for MAIT-cell-based therapeutics and vaccines. At last, this study paves the way for the investigation of putative MAIT cell antigens that could exist in the context of Leishmania infection.
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Affiliation(s)
- Marcela de Lima Moreira
- René Rachou Institute, Oswaldo Cruz Foundation (FIOCRUZ-MINAS), Belo Horizonte, Minas Gerais, Brazil
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | | | - Marcelo Antônio Pascoal-Xavier
- René Rachou Institute, Oswaldo Cruz Foundation (FIOCRUZ-MINAS), Belo Horizonte, Minas Gerais, Brazil
- School of Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ágata Lopes Ribeiro
- René Rachou Institute, Oswaldo Cruz Foundation (FIOCRUZ-MINAS), Belo Horizonte, Minas Gerais, Brazil
| | | | - Troi Pediongco
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | | | - Andréa Teixeira-Carvalho
- René Rachou Institute, Oswaldo Cruz Foundation (FIOCRUZ-MINAS), Belo Horizonte, Minas Gerais, Brazil
| | - Andrea Lucchesi de Carvalho
- João Paulo II Children’s Hospital, Fundação Hospitalar do Estado de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Flávia Alves Campos
- João Paulo II Children’s Hospital, Fundação Hospitalar do Estado de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marineide Borges
- João Paulo II Children’s Hospital, Fundação Hospitalar do Estado de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mariângela Carneiro
- Parasitology Department, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Zhenjun Chen
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Eleanor Saunders
- Department of Biochemistry and Molecular Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Malcolm McConville
- Department of Biochemistry and Molecular Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Moriya Tsuji
- Aaron Diamond AIDS Research Center, Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
| | - James McCluskey
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | | | - Sidonia Barbara Guiomar Eckle
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Jordana Grazziela Alves Coelho-dos-Reis
- René Rachou Institute, Oswaldo Cruz Foundation (FIOCRUZ-MINAS), Belo Horizonte, Minas Gerais, Brazil
- Department of Microbiology, Institute for Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- *Correspondence: Vanessa Peruhype-Magalhães, ; ; Jordana Grazziela Alves Coelho-dos-Reis, ;
| | - Vanessa Peruhype-Magalhães
- René Rachou Institute, Oswaldo Cruz Foundation (FIOCRUZ-MINAS), Belo Horizonte, Minas Gerais, Brazil
- *Correspondence: Vanessa Peruhype-Magalhães, ; ; Jordana Grazziela Alves Coelho-dos-Reis, ;
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Piyasiri SB, Samaranayake TN, Silva H, Manamperi NH, Karunaweera ND. ELISA-based evaluation of antibody response to Leishmania in a region endemic for cutaneous leishmaniasis. Parasite Immunol 2022; 44:e12940. [PMID: 35836368 PMCID: PMC9481270 DOI: 10.1111/pim.12940] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 05/18/2022] [Accepted: 07/07/2022] [Indexed: 11/26/2022]
Abstract
Leishmaniasis includes several clinical forms. While routine diagnosis of cutaneous leishmaniasis (CL) is by microscopy, an antibody response to CL has been reported in several recent studies. This study evaluated anti-leishmanial immunoglobulin G (IgG) antibody responses as a biomarker of active leishmaniasis and a measure of exposure to Leishmania. Sera from 50 untreated CL patients, 140 patients under treatment and 280 healthy individuals residing in endemic regions collected as part of an epidemiological survey, was analysed with an enzyme-linked immunosorbent assay established in-house using receiver operator characteristic curve at optimized cut-off value. The assay showed high performance as a diagnostic tool in identifying exposure in endemic individuals (sensitivity: 98%, specificity: 90.3%). All patients showed lower antibody levels over time since onset of lesion/s. Antibody levels were higher (p ˂ .01) and persisted for a longer period in untreated patients. In patients under treatment, the level of anti-IgG antibodies was negatively correlated with the total duration the patient had been on treatment. The anti-leishmanial IgG response in Leishmania donovani-induced CL is transient and is unlikely to confer protective immunity. Optimized serological assays may be useful in endemic settings for diagnosis and monitoring the treatment response in CL.
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Affiliation(s)
- Sachee Bhanu Piyasiri
- Faculty of Medicine, Department of Parasitology, University of Colombo, Colombo, Sri Lanka
| | | | - Hermali Silva
- Faculty of Medicine, Department of Parasitology, University of Colombo, Colombo, Sri Lanka
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Gürbüz Çolak N, Çetin Uyanikgil EÖ, Özbel Y, Töz S. The Designing of a Gel Formulation with Chitosan Polymer Using Liposomes as Nanocarriers of Amphotericin B for a Non-invasive Treatment Model of Cutaneous Leishmaniasis. Acta Parasitol 2022; 67:1354-1363. [PMID: 35857275 DOI: 10.1007/s11686-022-00594-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/01/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE Leishmaniasis is a disease caused by different Leishmania spp., which are transmitted to humans by a bite of infected female sand flies. Cutaneous leishmaniasis (CL, oriental sore), visceral leishmaniasis (VL), and mucocutaneous leishmaniasis (MCL) are three main clinical forms, however, only CL and VL are seen in Turkey. Cutaneous leishmaniasis is characterized by skin lesion(s) and is one of the most important vector-borne diseases in Turkey with over 2000 cases reported annually in 40 out of 81 provinces. The treatment is usually made invasively and painfully by intralesional injection of pentavalent antimony compounds. Non-invasive and innovative treatment methods are needed as aimed in this study. METHODS In the present study, one of the classical antileishmanial drugs, amphotericin B (AmB), encapsulated in liposomes was evaluated using non-invasive design based on chitosan, which is a nontoxic, biocompatible and biodegradable polymer. To avoid the invasive effect of conventional intralesional needle application, the drug was encapsulated in liposomes and incorporated into a chitosan gel for applying topically on the skin lesion. The efficacy of encapsulation of amphotericin B into liposomes and the drug release from liposomes were studied. The chitosan gel was evaluated for viscosity, flowability, appearance and pH. The efficacy of the drug embedded into chitosan gel, liposomal AmB alone and chitosan gel alone in four different concentrations was also tested using Leishmania spp. promastigotes in vitro. RESULTS The findings have shown that AmB was encapsulated into the liposomes with high efficiency (86.6%) and long-term physical and chemical stability. Therefore, designed liposomal formulation was suitable for sustained release. The appearance of the drug-embedded chitosan gel was transparent and appropriate. Chitosan gels showed non- Newtonian behavior and plastic flow. The liposomal AmB also showed higher efficacy with no parasites in all concentrations while drug embedded into chitosan gel and chitosan gel alone were effective in two higher concentrations. The lower efficacy of the drug-embedded chitosan gel in 24 h in in-vitro study was probably due to slow release of the drug. CONCLUSION The gel design created in this study will provide ease of use for the lesions of CL patients that do not have a specific number, size, and shape. Follow-up studies by the ex-vivo macrophage infection model with Leishmania intracellular amastigote forms and Leishmania-infected animal models are needed to understand the present design's efficacy better.
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Affiliation(s)
- Nergiz Gürbüz Çolak
- Department of Molecular Biology and Genetics, Izmir İnstitute of Technology, Urla, Izmir, Turkey
| | - Emel Öykü Çetin Uyanikgil
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ege University, Bornova, Izmir, Turkey
| | - Yusuf Özbel
- Faculty of Medicine, Department of Parasitology, Ege University, Bornova, Izmir, Turkey
| | - Seray Töz
- Faculty of Medicine, Department of Parasitology, Ege University, Bornova, Izmir, Turkey.
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Vaitkevicius-Antão V, Moreira-Silva J, Reino IBDSM, de Melo MGN, da Silva-Júnior JN, de Andrade AF, de Araújo PSR, Bezerra RP, Marques DDAV, Ferreira S, Pessoa-e-Silva R, de Lorena VMB, de Paiva-Cavalcanti M. Therapeutic Potential of Photosynthetic Microorganisms for Visceral Leishmaniasis: An Immunological Analysis. Front Immunol 2022; 13:891495. [PMID: 35844611 PMCID: PMC9280147 DOI: 10.3389/fimmu.2022.891495] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 05/27/2022] [Indexed: 11/13/2022] Open
Abstract
New therapeutic strategies for visceral leishmaniasis (VL) have been studied, and the development of an immunotherapeutic agent that modulates the host’s immune response is necessary. The aim of this study was to evaluate in vitro the bioactive extracts of photosynthetic microorganisms (PMs) for their leishmanicidal/leishmanistatic and immunomodulatory potentials. Bioactive extracts from PMs (Arthrospira platensis and Dunaliella tertiolecta) were obtained by sonication. Reference drugs, miltefosine (MTF) and N-methylglucamine antimoniate (SbV), were also evaluated. The selectivity index (SI) of treatments was determined by assays of inhibitory concentration (IC50) in Leishmania infantum cells and cytotoxic concentrations (CC50) in human peripheral blood mononuclear cells by the MTT method. The immune response was evaluated in healthy human cells by the production of cytokines and nitric oxide (NO) and the gene expression of Tbx21, GATA3, RORc, and FOXP3, using four concentrations (CC50, ½ CC50, ¼ CC50, and IC50) for in-vitro stimulation. Based on the data obtained, we observed that the extracts of D. tertiolecta (SI = 4.7) and A. platensis (SI = 3.8) presented better results when compared to SbV (SI = 2.1). When analyzing the immune response results, we identified that the extracts of PMs stimulated the production of cytokines of the Th1 profile more than the reference drugs. The extracts also demonstrated the ability to stimulate NO synthesis. Regarding gene expression, in all concentrations of A. platensis extracts, we found a balance between the Th1/Th2 profile, with the average expression of the Tbx21 gene more than the GATA3 in the highest concentration (CC50). Regarding the extract of D. tertiolecta, we can observe that, in the lowest concentrations, a balance between all the genes was present, with the average expression of the GATA3 gene being lower than the others. The best result was found in the ½ CC50 concentration, stimulating a balanced positive expression between the Th1×Th17×Treg profiles, with a negative expression of GATA3. Thus, PM extracts showed promising results, presenting low toxicity, leishmanicidal/leishmanistatic activity, and induction of the immune response, which could be potential therapeutic candidates for VL.
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Affiliation(s)
| | - Jady Moreira-Silva
- Department of Microbiology, Aggeu Magalhães Institute, Fiocruz Pernambuco, Recife, Brazil
| | | | | | | | | | | | | | | | - Silvana Ferreira
- Institute of Biological Sciences, University of Pernambuco, Recife, Brazil
| | | | | | - Milena de Paiva-Cavalcanti
- Department of Microbiology, Aggeu Magalhães Institute, Fiocruz Pernambuco, Recife, Brazil
- *Correspondence: Milena de Paiva-Cavalcanti,
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Singhal J, Madan E, Chaurasiya A, Srivastava P, Singh N, Kaushik S, Kahlon AK, Maurya MK, Marothia M, Joshi P, Ranganathan A, Singh S. Host SUMOylation Pathway Negatively Regulates Protective Immune Responses and Promotes Leishmania donovani Survival. Front Cell Infect Microbiol 2022; 12:878136. [PMID: 35734580 PMCID: PMC9207379 DOI: 10.3389/fcimb.2022.878136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/19/2022] [Indexed: 11/25/2022] Open
Abstract
SUMOylation is one of the post-translational modifications that have recently been described as a key regulator of various cellular, nuclear, metabolic, and immunological processes. The process of SUMOylation involves the modification of one or more lysine residues of target proteins by conjugation of a ubiquitin-like, small polypeptide known as SUMO for their degradation, stability, transcriptional regulation, cellular localization, and transport. Herein, for the first time, we report the involvement of the host SUMOylation pathway in the process of infection of Leishmania donovani, a causative agent of visceral leishmaniasis. Our data revealed that infection of L. donovani to the host macrophages leads to upregulation of SUMOylation pathway genes and downregulation of a deSUMOylating gene, SENP1. Further, to confirm the effect of the host SUMOylation on the growth of Leishmania, the genes associated with the SUMOylation pathway were silenced and parasite load was analyzed. The knockdown of the SUMOylation pathway led to a reduction in parasitic load, suggesting the role of the host SUMOylation pathway in the disease progression and parasite survival. Owing to the effect of the SUMOylation pathway in autophagy, we further investigated the status of host autophagy to gain mechanistic insights into how SUMOylation mediates the regulation of growth of L. donovani. Knockdown of genes of host SUMOylation pathway led to the reduction of the expression levels of host autophagy markers while promoting autophagosome–lysosome fusion, suggesting SUMOylation-mediated autophagy in terms of autophagy initiation and autophagy maturation during parasite survival. The levels of reactive oxygen species (ROS) generation, nitric oxide (NO) production, and pro-inflammatory cytokines were also elevated upon the knockdown of genes of the host SUMOylation pathway during L. donovani infection. This indicates the involvement of the SUMOylation pathway in the modulation of protective immune responses and thus favoring parasite survival. Taken together, the results of this study indicate the hijacking of the host SUMOylation pathway by L. donovani toward the suppression of host immune responses and facilitation of host autophagy to potentially facilitate its survival. Targeting of SUMOylation pathway can provide a starting point for the design and development of novel therapeutic interventions to combat leishmaniasis.
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Affiliation(s)
- Jhalak Singhal
- *Correspondence: Jhalak Singhal, ; Anand Ranganathan, ; Shailja Singh,
| | | | | | | | | | | | | | | | | | | | - Anand Ranganathan
- *Correspondence: Jhalak Singhal, ; Anand Ranganathan, ; Shailja Singh,
| | - Shailja Singh
- *Correspondence: Jhalak Singhal, ; Anand Ranganathan, ; Shailja Singh,
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Giri J, Basu M, Roy S, Mishra T, Jana K, Chande A, Ukil A. Translationally Controlled Tumor Protein-Mediated Stabilization of Host Antiapoptotic Protein MCL-1 Is Critical for Establishment of Infection by Intramacrophage Parasite Leishmania donovani. J Immunol 2022; 208:2540-2548. [PMID: 35562118 DOI: 10.4049/jimmunol.2100748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 03/21/2022] [Indexed: 06/15/2023]
Abstract
In the early phase of infection, the intramacrophage pathogen Leishmania donovani protects its niche with the help of the antiapoptotic protein myeloid cell leukemia-1 (MCL-1). Whether Leishmania could exploit MCL-1, an extremely labile protein, at the late phase is still unclear. A steady translational level of MCL-1 observed up to 48 h postinfection and increased caspase-3 activity in MCL-1-silenced infected macrophages documented its importance in the late hours of infection. The transcript level of MCL-1 showed a sharp decline at 6 h postinfection, and persistent MCL-1 expression in cyclohexamide-treated cells negates the possibility of de novo protein synthesis, thereby suggesting infection-induced stability. Increased ubiquitination, a prerequisite for proteasomal degradation of MCL-1, was also found to be absent in the late hours of infection. Lack of interaction with its specific E3 ubiquitin ligase MULE (MCL-1 ubiquitin ligase E3) and specific deubiquitinase USP9X prompted us to search for blockade of the ubiquitin-binding site in MCL-1. To this end, TCTP (translationally controlled tumor protein), a well-known binding partner of MCL-1 and antiapoptotic regulator, was found to be strongly associated with MCL-1 during infection. Phosphorylation of TCTP, a requirement for MCL-1 binding, was also increased in infected macrophages. Knockdown of TCTP decreased MCL-1 expression and short hairpin RNA-mediated silencing of TCTP in an infected mouse model of visceral leishmaniasis showed decreased parasite burden and induction of liver cell apoptosis. Collectively, our investigation revealed a key mechanism of how L. donovani exploits TCTP to establish infection within the host.
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Affiliation(s)
- Jayeeta Giri
- Department of Biochemistry, University of Calcutta, Kolkata, India
| | - Moumita Basu
- Biosciences and Bioengineering Department, Indian Institute of Technology, Mumbai, India
| | - Shalini Roy
- Department of Biochemistry, University of Calcutta, Kolkata, India
| | - Tarun Mishra
- Molecular Virology Laboratory, Indian Institute of Science Education and Research Bhopal, Bhopal, India; and
| | - Kuladip Jana
- Division of Molecular Medicine, Bose Institute, P1/12 Calcutta Improvement Trust Scheme VIIM, Kolkata, India
| | - Ajit Chande
- Molecular Virology Laboratory, Indian Institute of Science Education and Research Bhopal, Bhopal, India; and
| | - Anindita Ukil
- Department of Biochemistry, University of Calcutta, Kolkata, India;
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de Souza Fernandes W, de Oliveira Moura Infran J, Falcão de Oliveira E, Etelvina Casaril A, Petilim Gomes Barrios S, Lopes de Oliveira SL, Gutierrez de Oliveira A. Phlebotomine Sandfly (Diptera: Psychodidae) Fauna and The Association Between Climatic Variables and The Abundance of Lutzomyia longipalpis sensu lato in an Intense Transmission Area for Visceral Leishmaniasis in Central Western Brazil. J Med Entomol 2022; 59:997-1007. [PMID: 35139201 DOI: 10.1093/jme/tjac006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Indexed: 06/14/2023]
Abstract
The presence, abundance, and distribution of sandflies are strongly influenced by climate and environmental changes. This study aimed to describe the sandfly fauna in an intense transmission area for visceral leishmaniasis and to evaluate the association between the abundance of Lutzomyia longipalpis sensu lato (Lutz & Neiva 1912) (Diptera: Psychodidae) and climatic variables. Captures were carried out 2 yr (July 2017 to June 2019) with automatic light traps in 16 sites of the urban area of Campo Grande, Mato Grosso do Sul state. The temperature (°C), relative humidity (%), precipitation (mm3), and wind speed (km/h) were obtained by a public domain database. The Wilcoxon test compared the absolute frequencies of the species by sex. The association between climatic variables and the absolute frequency of Lu. longipalpis s.l. was assessed using the Spearman's correlation coefficient. A total of 1,572 sandflies into four species were captured. Lutzomyia longipalpis s.l. was the most abundant species and presented a significant correlation with the average temperature, humidity, and wind speed in different periods. Lutzomyia longipalpis s.l. was captured in all months, showing its plasticity in diverse weather conditions. We emphasize the importance of regular monitoring of vectors and human and canine cases, providing data for surveillance and control actions to continue to be carried out in the municipality.
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Affiliation(s)
- Wagner de Souza Fernandes
- Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
| | - Jucelei de Oliveira Moura Infran
- Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
| | - Everton Falcão de Oliveira
- Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
- Instituto Integrado de Saúde (INISA), Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
| | - Aline Etelvina Casaril
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
| | - Suellem Petilim Gomes Barrios
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
| | - Samuel Lucas Lopes de Oliveira
- Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição (FACFAN), Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
| | - Alessandra Gutierrez de Oliveira
- Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
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Costa-Madeira JC, Trindade GB, Almeida PHP, Silva JS, Carregaro V. T Lymphocyte Exhaustion During Human and Experimental Visceral Leishmaniasis. Front Immunol 2022; 13:835711. [PMID: 35585983 PMCID: PMC9108272 DOI: 10.3389/fimmu.2022.835711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 04/07/2022] [Indexed: 11/18/2022] Open
Abstract
A key point of immunity against protozoan Leishmania parasites is the development of an optimal T cell response, which includes a low apoptotic rate, high proliferative activity and polyfunctionality. During acute infection, antigen-specific T cells recognize the pathogen resulting in pathogen control but not elimination, promoting the development and the maintenance of a population of circulating effector cells that mount rapid response quickly after re-exposure to the parasite. However, in the case of visceral disease, the functionality of specific T cells is lost during chronic infection, resulting in inferior effector functions, poor response to specific restimulation, and suboptimal homeostatic proliferation, a term referred to as T cell exhaustion. Multiple factors, including parasite load, infection duration and host immunity, affect T lymphocyte exhaustion. These factors contribute to antigen persistence by promoting inhibitory receptor expression and sustained production of soluble mediators, influencing suppressive cell function and the release of endogenous molecules into chronically inflamed tissue. Together, these signals encourage several changes, reprogramming cells into a quiescent state, which reflects disease progression to more severe forms, and development of acquired resistance to conventional drugs to treat the disease. These points are discussed in this review.
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Affiliation(s)
- Juliana C. Costa-Madeira
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University from São Paulo, Ribeirão Preto, Brazil
| | - Gabrielly B. Trindade
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University from São Paulo, Ribeirão Preto, Brazil
| | - Paulo H. P. Almeida
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University from São Paulo, Ribeirão Preto, Brazil
| | - João S. Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University from São Paulo, Ribeirão Preto, Brazil
- Fiocruz-Bi-Institutional Translational Medicine Project, Ribeirão Preto, Brazil
| | - Vanessa Carregaro
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University from São Paulo, Ribeirão Preto, Brazil
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Roberts AJ, Ong HB, Clare S, Brandt C, Harcourt K, Franssen SU, Cotton JA, Müller-Sienerth N, Wright GJ. Systematic identification of genes encoding cell surface and secreted proteins that are essential for in vitro growth and infection in Leishmania donovani. PLoS Pathog 2022; 18:e1010364. [PMID: 35202447 PMCID: PMC8903277 DOI: 10.1371/journal.ppat.1010364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 03/08/2022] [Accepted: 02/11/2022] [Indexed: 11/23/2022] Open
Abstract
Leishmaniasis is an infectious disease caused by protozoan parasites belonging to the genus Leishmania for which there are no approved human vaccines. Infections localise to different tissues in a species-specific manner with the visceral form of the disease caused by Leishmania donovani and L. infantum being the most deadly in humans. Although Leishmania spp. parasites are predominantly intracellular, the visceral disease can be prevented in dogs by vaccinating with a complex mixture of secreted products from cultures of L. infantum promastigotes. With the logic that extracellular parasite proteins make good subunit vaccine candidates because they are directly accessible to vaccine-elicited host antibodies, here we attempt to discover proteins that are essential for in vitro growth and host infection with the goal of identifying subunit vaccine candidates. Using an in silico analysis of the Leishmania donovani genome, we identified 92 genes encoding proteins that are predicted to be secreted or externally anchored to the parasite membrane by a single transmembrane region or a GPI anchor. By selecting a transgenic L. donovani parasite that expresses both luciferase and the Cas9 nuclease, we systematically attempted to target all 92 genes by CRISPR genome editing and identified four that were required for in vitro growth. For fifty-five genes, we infected cohorts of mice with each mutant parasite and by longitudinally quantifying parasitaemia with bioluminescent imaging, showed that nine genes had evidence of an attenuated infection although all ultimately established an infection. Finally, we expressed two genes as full-length soluble recombinant proteins and tested them as subunit vaccine candidates in a murine preclinical infection model. Both proteins elicited significant levels of protection against the uncontrolled development of a splenic infection warranting further investigation as subunit vaccine candidates against this deadly infectious tropical disease. Leishmaniasis is a parasitic infectious disease that is responsible for many tens of thousands of human deaths per year, primarily in impoverished parts of the world. Although there are drugs to treat this parasite infection, resistance is emerging and there are no approved human vaccines. Extracellular parasite proteins can make good vaccine targets because they are directly accessible to host antibodies; however, not all parasite surface proteins can elicit protective immune responses. With the goal of identifying new vaccine targets, we selected over 90 genes that encode parasite cell surface and secreted proteins and used the latest CRISPR gene editing technology to individually target them. Using these mutant parasites, we identified four genes required for parasite growth in the laboratory. We expressed two of the proteins as subunit vaccines and a preclinical infection model was used to determine if they could elicit protective immune responses. We found that two of our candidates were able to confer significant levels of protection in a murine model of visceral leishmaniasis. Our study will contribute to the search for a highly effective vaccine against visceral leishmaniasis to improve the lives of people living in some of the poorest regions on the planet.
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Affiliation(s)
- Adam J. Roberts
- Cell Surface Signalling Laboratory, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Han B. Ong
- Cell Surface Signalling Laboratory, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Simon Clare
- Pathogen Support Team, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Cordelia Brandt
- Pathogen Support Team, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Katherine Harcourt
- Pathogen Support Team, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Susanne U. Franssen
- Parasite Genomics, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - James A. Cotton
- Parasite Genomics, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Nicole Müller-Sienerth
- Cell Surface Signalling Laboratory, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Gavin J. Wright
- Cell Surface Signalling Laboratory, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
- Department of Biology, Hull York Medical School, York Biomedical Research Institute, University of York, York, United Kingdom
- * E-mail:
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Ramos-Sanchez EM, Reis LC, Souza MDA, Muxel SM, Santos KR, Lagos D, Pereira VRA, de Brito MEF, Kaye PM, Floeter-Winter LM, Goto H. miR-548d-3p Is Up-Regulated in Human Visceral Leishmaniasis and Suppresses Parasite Growth in Macrophages. Front Cell Infect Microbiol 2022; 12:826039. [PMID: 35265535 PMCID: PMC8900537 DOI: 10.3389/fcimb.2022.826039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/24/2022] [Indexed: 11/30/2022] Open
Abstract
Visceral leishmaniasis caused by Leishmania (Leishmania) infantum in Latin America progress with hepatosplenomegaly, pancytopenia, hypergammaglobulinemia, and weight loss and maybe lethal mainly in untreated cases. miRNAs are important regulators of immune and inflammatory gene expression, but their mechanisms of action and their relationship to pathogenesis in leishmaniasis are not well understood. In the present study, we sought to quantify changes in miRNAs associated with immune and inflammatory pathways using the L. (L.) infantum promastigote infected- human monocytic THP-1 cell model and plasma from patients with visceral leishmaniasis. We identified differentially expressed miRNAs in infected THP-1 cells compared with non-infected cells using qPCR arrays. These miRNAs were submitted to in silico analysis, revealing targets within functional pathways associated with TGF-β, chemokines, glucose metabolism, inflammation, apoptosis, and cell signaling. In parallel, we identified differentially expressed miRNAs in active visceral leishmaniasis patient plasma compared with endemic healthy controls. In silico analysis of these data indicated different predicted targets within the TGF-β, TLR4, IGF-I, chemokine, and HIF1α pathways. Only a small number of miRNAs were commonly identified in these two datasets, notably with miR-548d-3p being up-regulated in both conditions. To evaluate the potential biological role of miR-548d-3p, we transiently transfected a miR-548d-3p inhibitor into L. (L.) infantum infected-THP-1 cells, finding that inhibition of miR-548d-3p enhanced parasite growth, likely mediated through reduced levels of MCP-1/CCL2 and nitric oxide production. Further work will be required to determine how miR-548d-3p plays a role in vivo and whether it serves as a potential biomarker of progressive leishmaniasis.
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Affiliation(s)
- Eduardo Milton Ramos-Sanchez
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
- Departamento de Salud Publica, Facultad de Ciencias de La Salud, Universidad Nacional Toribio Rodriguez de Mendoza de Amazonas, Chachapoyas, Peru
- Graduate Program in Animal Science, Agrarian Sciences Center (CCA), Federal University of Paraiba (UFPB), Areia, Brazil
| | - Luiza Campos Reis
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
| | - Marina de Assis Souza
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
| | - Sandra Márcia Muxel
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Kamila Reis Santos
- Veterinary Clinical Immunology Research Group, Departamento de Clínica Médica, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Dimitris Lagos
- York Biomedical Research Institute, Hull York Medical School, University of York, York, United Kingdom
| | | | | | - Paul Martin Kaye
- York Biomedical Research Institute, Hull York Medical School, University of York, York, United Kingdom
| | | | - Hiro Goto
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de São Paulo (IMTSP/USP), São Paulo, Brazil
- Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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Sousa-Paula LCD, Dantas-Torres F. Who is Lutzomyia longipalpis (Lutz & Neiva, 1912)? Acta Trop 2021; 224:106151. [PMID: 34562425 DOI: 10.1016/j.actatropica.2021.106151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 09/12/2021] [Accepted: 09/13/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Lucas Christian de Sousa-Paula
- Department of Immunology, Laboratory of Immunoparasitology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz Pernambuco), Avenida Professor Moraes Rego, s/n, Recife, Pernambuco 50740465, Brazil
| | - Filipe Dantas-Torres
- Department of Immunology, Laboratory of Immunoparasitology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz Pernambuco), Avenida Professor Moraes Rego, s/n, Recife, Pernambuco 50740465, Brazil.
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Nascimento LFJ, Cirilo TM, Gomes DS, Gomes ACA, Lima VFS, Scher R, Jain S, Fujiwara RT, Dolabella SS. Epidemiological and diagnostic aspects of feline leishmaniasis with emphasis on Brazil: a narrative review. Parasitol Res 2021; 121:21-34. [PMID: 34761278 PMCID: PMC8580739 DOI: 10.1007/s00436-021-07372-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 11/01/2021] [Indexed: 11/26/2022]
Abstract
The leishmaniases are a group of diseases caused by the protozoan parasite belonging to the genus Leishmania. In the New World, although dogs are considered the main parasite reservoir, in the last two decades, several studies have confirmed the role of cats (Felis catus) in the epidemiology of the disease and feline leishmaniasis (FeL) is now considered to be an emerging disease. The present review summarizes the current knowledge about FeL, focusing on important immunopathological aspects, epidemiology, and diagnostic methods applied for felines in Brazil. Cats are infected with the same species of Leishmania found in dogs (i.e., Leishmania infantum). Like dogs, skin lesions are the most common in cats with clinical FeL, mainly affecting the cephalic region and less frequently the legs which may be accompanied by generalized signs or visceral involvement. Information on the immune response of cats to Leishmania infection is scarce; however, efficient infection control is seen in most cases. For diagnosis, generally, the same methods as those in dogs are used, mainly serological tools. But there is a lack of studies focusing the performance of these methods for diagnosing FeL. The estimated overall prevalence of FeL in Brazil is 8%, with L. infantum being the most prevalent species. However, infections with Leishmania braziliensis and Leishmania amazonensis have also been reported. In conclusion, although there has been an increase in the publication related to FeL in Brazil in recent years, there is a lack of research relating immune response and diagnosis of these animals. Cats have been shown to be competent hosts for Leishmania parasites, and their role in the epidemiology of the disease cannot be underestimated, especially in areas of Brazil where the disease is historically endemic.
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Affiliation(s)
- Luiz F J Nascimento
- Programa de Pós-Graduação em Biologia Parasitária, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - Tatyane M Cirilo
- Programa de Pós-Graduação em Biologia Parasitária, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - Dharliton S Gomes
- Programa de Pós-Graduação em Biologia Parasitária, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - Ana Carolina A Gomes
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Victor F S Lima
- Programa de Pós-Graduação em Biologia Parasitária, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - R Scher
- Programa de Pós-Graduação em Biologia Parasitária, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil
- Departamento de Morfologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - S Jain
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes, Aracaju, SE, 49032-490, Brazil
| | - Ricardo T Fujiwara
- Programa de Pós-Graduação em Biologia Parasitária, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil.
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
| | - Silvio S Dolabella
- Programa de Pós-Graduação em Biologia Parasitária, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil.
- Departamento de Morfologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Sergipe, São Cristóvão, SE, 49100-000, Brazil.
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Taghipour A, Abdoli A, Ramezani A, Abolghazi A, Mofazzal Jahromi MA, Maani S, Heidar Nejadi SM, Rasti S, Shams M, Ghasemi E. Leishmaniasis and Trace Element Alterations: a Systematic Review. Biol Trace Elem Res 2021; 199:3918-3938. [PMID: 33405078 DOI: 10.1007/s12011-020-02505-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/17/2020] [Indexed: 12/21/2022]
Abstract
Leishmaniasis is a worldwide prevalent parasitic infection caused by different species of the genus Leishmania. Clinically, the disease divided into three main forms, including visceral leishmaniasis (VL), cutaneous leishmaniasis (CL), and mucocutaneous leishmaniasis (MCL). There is no vaccine for human leishmaniasis and their treatment is challenging. Trace elements (TEs) alteration, including the selenium (Se), zinc (Zn), copper (Cu), ron (Fe), and magnesium (Mg) have been detected in patients with CL and VL as well as canine leishmaniasis. Because TEs play a pivotal role in the immune system, and host immune responses have crucial roles in defense against leishmaniasis, this systematic review aimed to summarize data regarding TEs alteration in human and animal leishmaniasis as well as the role of these elements as an adjuvant for treatment of leishmaniasis. In a setting of systematic review, we found 29 eligible articles (any date until October 1, 2020) regarding TEs in human CL (N = 12), human VL (N = 4), canine leishmaniasis (N = 3), and treatment of leishmaniasis based on TEs (N = 11), which one study examined the TEs level both in CL and VL patients. Our analysis demonstrated a significantly decreased level of Fe, Zn, and Se among human CL and canine leishmaniasis, and Zn and Fe in patients with VL. In contrast, an increased level of Cu in CL patients and Cu and Mg in VL patients and canine leishmaniasis was observed. Treatment of CL based zinc supplementation revealed enhancement of wound healing and diminished scar formation in human and experimentally infected animals. The results of this systematic review indicate that the TEs have important roles in leishmaniasis, which could be assessed as a prognosis factor in this disease. It is suggested that TEs could be prescribed as an adjuvant for the treatment of CL and VL patients.
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Affiliation(s)
- Ali Taghipour
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Amir Abdoli
- Department of Parasitology and Mycology, School of Medicine, Jahrom University of Medical Sciences, PO Box 74148-46199, Ostad Motahari Ave, Jahrom, Iran.
- Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom, Iran.
| | - Afifeh Ramezani
- Student Research Committee, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Ahmad Abolghazi
- Department of Parasitology and Mycology, School of Medicine, Jahrom University of Medical Sciences, PO Box 74148-46199, Ostad Motahari Ave, Jahrom, Iran
- Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Mirza Ali Mofazzal Jahromi
- Department of Advanced Medical Sciences & Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran
- Department of Laboratory Sciences, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran
- Research Center for Noncommunicable Diseases, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Salar Maani
- Department of Parasitology and Mycology, School of Medicine, Jahrom University of Medical Sciences, PO Box 74148-46199, Ostad Motahari Ave, Jahrom, Iran
- Student Research Committee, Jahrom University of Medical Sciences, Jahrom, Iran
| | | | - Sima Rasti
- Department of Parasitology and Mycology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Morteza Shams
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Ezatollah Ghasemi
- Department of Medical Parasitology, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
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Monteiro MJDSD, da Silva MNP, Paiva ADA, Marreiro DDN, Luzia LA, Henriques GS, Rondó PHDC, Sene IDS, de Almeida ATA, Costa CHN, Costa DL. Nutritional status and vitamin A and zinc levels in patients with kala-azar in Piauí, Brazil. Rev Soc Bras Med Trop 2021; 54:e08002020. [PMID: 34495261 PMCID: PMC8437443 DOI: 10.1590/0037-8682-0800-2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 07/26/2021] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Malnutrition and kala-azar (or visceral leishmaniasis) are significant public health problems in different parts of the world. Immunity and susceptibility to infectious and parasitic diseases are directly linked to the host's nutritional state, but little is known about the interaction between nutrition and kala-azar. This study aimed to evaluate nutritional status with kala-azar and correlate these findings with the clinical and laboratory manifestations of the disease, and zinc and retinol levels. METHODS This was a cross-sectional study of 139 patients with kala-azar. Nutritional status classification was performed according to international recommendations. Parametric or nonparametric tests were applied whenever indicated in a two-sided test with a 5% significance level. RESULTS Weight loss and malnutrition were more frequent in adults. Body mass index-for-age, fat area of the arm, and upper arm muscle area were significantly associated with probability of death. The presence of human immunodeficiency virus, hepatomegaly, and splenomegaly was correlated with nutritional assessment. Blood leukocyte and lymphocyte, serum creatine, and vitamin A levels were significantly higher in adult men. Vitamin A levels were highly associated with the level of hemoglobin and C-reactive protein (CRP) in multivariate analysis. All patients had reduced plasma zinc levels, but this finding had no association with the outcome variables. CONCLUSIONS Malnutrition was correlated with severe disease and was more prevalent in older people with kala-azar. Vitamin A deficiency was associated with hemoglobin and CRP. Zinc levels were reduced in patients with kala-azar.
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Affiliation(s)
| | - Maria Nauside Pessoa da Silva
- Universidade Federal do Piauí, Programa de Pós-Graduação em Biotecnologia, Rede Nordeste de Biotecnologia, Teresina, PI, Brasil
| | | | | | - Liania Alves Luzia
- Universidade de São Paulo, Laboratório de Micronutrientes, São Paulo, SP, Brasil
| | - Gilberto Simeone Henriques
- Universidade Federal de Minas Gerais, Escola de Enfermagem, Laboratório Experimental de Nutrição, Belo Horizonte, MG, Brasil
| | | | - Ingridi de Souza Sene
- Universidade Federal do Piauí, Laboratório de Pesquisas em Leishmanioses, Teresina, PI, Brasil
- Laboratório de Anatomia Patológica e Biologia Molecular, Teresina, PI, Brasil
| | | | - Carlos Henrique Nery Costa
- Universidade Federal do Piauí, Laboratório de Pesquisas em Leishmanioses, Teresina, PI, Brasil
- Centro de Inteligência para Agravos Tropicais Emergentes e Negligenciados, Teresina, PI, Brasil
- Universidade Federal do Piauí, Departamento de Medicina Comunitária, Teresina, PI, Brasil
| | - Dorcas Lamounier Costa
- Universidade Federal do Piauí, Laboratório de Pesquisas em Leishmanioses, Teresina, PI, Brasil
- Centro de Inteligência para Agravos Tropicais Emergentes e Negligenciados, Teresina, PI, Brasil
- Universidade Federal do Piauí, Departamento Materno-Infantil, Teresina, PI, Brasil
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Albalawi AE, Alanazi AD, Sharifi I, Ezzatkhah F. A Systematic Review of Curcumin and its Derivatives as Valuable Sources of Antileishmanial Agents. Acta Parasitol 2021; 66:797-811. [PMID: 33770343 DOI: 10.1007/s11686-021-00351-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 02/10/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND In recent years, antimonial agents and other synthetic antileishmanial drugs, such as amphotericin B, paromomycin, and many other drugs, have restrictions in use due to the toxicity risk, high cost, and emerging resistance to these drugs. The present study aimed to review the antileishmanial effects of curcumin, its derivatives, and other relevant pharmaceutical formulations on leishmaniasis. METHODS The present study was carried out according to the 06-preferred reporting items for systematic reviews and meta-analyses (PRISMA) guideline and registered in the CAMARADES-NC3Rs Preclinical Systematic Review and Meta-Analysis Facility (SyRF) database. Some English-language databases including PubMed, Google Scholar, Web of Science, EBSCO, Science Direct, and Scopus were searched for publications worldwide related to antileishmanial effects of curcumin, its derivatives, and other relevant pharmaceutical formulations, without date limitation, to identify all the published articles (in vitro, in vivo, and clinical studies). Keywords included "curcumin", "Curcuma longa", "antileishmanial", "Leishmania", "leishmaniasis", "cutaneous leishmaniasis", "visceral leishmaniasis", "in vitro", and "in vivo". RESULTS Out of 5492 papers, 29 papers including 20 in vitro (69.0%), 1 in vivo (3.4%), and 8 in vitro/in vivo (27.6%) studies conducted up to 2020, met the inclusion criteria for discussion in this systematic review. The most common species of the Leishmania parasite used in these studies were L. donovani (n = 13, 44.8%), L. major (n = 10, 34.5%), and L. amazonensis (n = 6, 20.7%), respectively. The most used derivatives in these studies were curcumin (n = 15, 33.3%) and curcuminoids (n = 5, 16.7%), respectively. CONCLUSION In the present review, according to the studies in the literature, various forms of drugs based on curcumin and their derivatives exhibited significant in vitro and in vivo antileishmanial activity against different Leishmania spp. The results revealed that curcumin and its derivatives could be considered as an alternative and complementary source of valuable antileishmanial components against leishmaniasis, which had no significant toxicity. However, further studies are required to elucidate this concluding remark, especially in clinical settings.
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Affiliation(s)
| | - Abdullah D Alanazi
- Department of Biological Science, Faculty of Science and Humanities, Shaqra University, Ad-Dawadimi 11911, Saudi Arabia
- Alghad International Colleges for Applied Medical Science, Tabuk 47913, Saudi Arabia
| | - Iraj Sharifi
- Leishmaniasis Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Fatemeh Ezzatkhah
- Department of Laboratory Sciences, Sirjan School of Medical Sciences, Sirjan, Iran.
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Bulté D, Van Bockstal L, Dirkx L, Van den Kerkhof M, De Trez C, Timmermans JP, Hendrickx S, Maes L, Caljon G. Miltefosine enhances infectivity of a miltefosine-resistant Leishmania infantum strain by attenuating its innate immune recognition. PLoS Negl Trop Dis 2021; 15:e0009622. [PMID: 34292975 PMCID: PMC8330912 DOI: 10.1371/journal.pntd.0009622] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 08/03/2021] [Accepted: 07/01/2021] [Indexed: 01/08/2023] Open
Abstract
Background Miltefosine (MIL) is currently the only oral drug available to treat visceral leishmaniasis but its use as first-line monotherapy has been compromised by an increasing treatment failure. Despite the scarce number of resistant clinical isolates, MIL-resistance by mutations in a single aminophospholipid transporter gene can easily be selected in a laboratory environment. These mutations result in a reduced survival in the mammalian host, which can partially be restored by exposure to MIL, suggesting a kind of drug-dependency. Methodology/Principal findings To enable a combined study of the infection dynamics and underlying immunological events for differential in vivo survival, firefly luciferase (PpyRE9) / red fluorescent protein (DsRed) double-reporter strains were generated of MIL-resistant (MIL-R) and syngeneic MIL-sensitive (MIL-S) Leishmania infantum. Results in C57Bl/6 and BALB/c mice show that MIL-R parasites induce an increased innate immune response that is characterized by enhanced influx and infection of neutrophils, monocytes and dendritic cells in the liver and elevated serum IFN-γ levels, finally resulting in a less efficient establishment in liver macrophages. The elevated IFN-γ levels were shown to originate from an increased response of hepatic NK and NKT cells to the MIL-R parasites. In addition, we demonstrated that MIL could increase the in vivo fitness of MIL-R parasites by lowering NK and NKT cell activation, leading to a reduced IFN-γ production. Conclusions/Significance Differential induction of innate immune responses in the liver was found to underlie the attenuated phenotype of a MIL-R parasite and its peculiar feature of drug-dependency. The impact of MIL on hepatic NK and NKT activation and IFN-γ production following recognition of a MIL-R strain indicates that this mechanism may sustain infections with resistant parasites and contribute to treatment failure. Visceral leishmaniasis is a neglected tropical disease that is fatal if left untreated. Miltefosine is currently the only oral drug available but is increasingly failing to cure patients, resulting in its discontinuation as first-line drug in some endemic areas. To understand these treatment failures, we investigated the complex interplay of the parasite with the host immune system in the presence and absence of miltefosine. Our data indicate that miltefosine-resistant Leishmania parasites become severely hampered in their in vivo infectivity, which could be attributed to the induction of a pronounced innate immune response. Interestingly, the infection deficit was partially restored in the presence of miltefosine. Our results further indicate that miltefosine can exacerbate infections with resistant parasites by reducing innate immune recognition. This study provides new insights into the complex interplay between parasite, drug and host and discloses an immune-related mechanism of treatment failure.
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Affiliation(s)
- Dimitri Bulté
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Wilrijk, Belgium
| | - Lieselotte Van Bockstal
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Wilrijk, Belgium
| | - Laura Dirkx
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Wilrijk, Belgium
| | - Magali Van den Kerkhof
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Wilrijk, Belgium
| | - Carl De Trez
- Vrije Universiteit Brussel, Laboratory for Cellular and Molecular Immunology (CMIM), Brussels, Belgium
| | - Jean-Pierre Timmermans
- University of Antwerp, Department of Veterinary Sciences, Laboratory of Cell biology & Histology, Wilrijk, Belgium
| | - Sarah Hendrickx
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Wilrijk, Belgium
| | - Louis Maes
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Wilrijk, Belgium
| | - Guy Caljon
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Wilrijk, Belgium
- * E-mail:
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Hossain F, Picado A, Owen SI, Ghosh P, Chowdhury R, Maruf S, Khan MAA, Rashid MU, Nath R, Baker J, Ghosh D, Adams ER, Duthie MS, Hossain MS, Basher A, Nath P, Aktar F, Cruz I, Mondal D. Evaluation of Loopamp™ Leishmania Detection Kit and Leishmania Antigen ELISA for Post-Elimination Detection and Management of Visceral Leishmaniasis in Bangladesh. Front Cell Infect Microbiol 2021; 11:670759. [PMID: 33981632 PMCID: PMC8108992 DOI: 10.3389/fcimb.2021.670759] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 03/29/2021] [Indexed: 11/13/2022] Open
Abstract
With reduced prevalence of visceral leishmaniasis (VL) in the Indian subcontinent (ISC), direct and field deployable diagnostic tests are needed to implement an effective diagnostic and surveillance algorithm for post-elimination VL control. In this regard, here we investigated the diagnostic efficacies of a loop-mediated isothermal amplification (LAMP) assay (Loopamp™ Leishmania Detection Kit, Eiken Chemical CO., Ltd, Japan), a real-time quantitative PCR assay (qPCR) and the Leishmania antigen ELISA (CLIN-TECH, UK) with different sampling techniques and evaluated their prospect to incorporate into post-elimination VL control strategies. Eighty clinically and rK39 rapid diagnostic test confirmed VL cases and 80 endemic healthy controls were enrolled in the study. Peripheral blood and dried blood spots (DBS) were collected from all the participants at the time of diagnosis. DNA was extracted from whole blood (WB) and DBS via silica columns (QIAGEN) and boil & spin (B&S) methods and tested with qPCR and Loopamp. Urine was collected from all participants at the time of diagnosis and was directly subjected to the Leishmania antigen ELISA. 41 patients were followed up and urine samples were collected at day 30 and day 180 after treatment and ELISA was performed. The sensitivities of the Loopamp-WB(B&S) and Loopamp-WB(QIA) were 96.2% (95% CI 89·43-99·22) and 95% (95% CI 87·69-98·62) respectively. The sensitivity of Loopamp-DBS(QIA) was 85% (95% CI 75·26- 92·00). The sensitivities of the qPCR-WB(QIA) and qPCR-DBS(QIA) were 93.8% (95% CI 86·01-97·94) and 72.5% (95% CI 61·38-81·90) respectively. The specificity of all molecular assays was 100%. The sensitivity and specificity of the Leishmania antigen ELISA were 97.5% (95% CI 91·47-99·70) and 91.95% (95% CI 84·12-96·70) respectively. The Leishmania antigen ELISA depicted clinical cure at day 180 in all the followed-up cases. Efficacy and sustainability identify the Loopamp-WB(B&S) and the Leishmania antigen ELISA as promising and minimally invasive VL diagnostic tools to support VL diagnostic and surveillance activities respectively in the post-elimination era.
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Affiliation(s)
- Faria Hossain
- Emerging infections and Parasitology laboratory, Nutrition and Clinical Service Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Albert Picado
- Neglected Tropical Diseases, Foundation for Innovative New Diagnostics, Geneva, Switzerland
| | - Sophie I. Owen
- Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Prakash Ghosh
- Emerging infections and Parasitology laboratory, Nutrition and Clinical Service Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Rajashree Chowdhury
- Emerging infections and Parasitology laboratory, Nutrition and Clinical Service Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Shomik Maruf
- Emerging infections and Parasitology laboratory, Nutrition and Clinical Service Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | | | - Md. Utba Rashid
- Emerging infections and Parasitology laboratory, Nutrition and Clinical Service Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Rupen Nath
- Emerging infections and Parasitology laboratory, Nutrition and Clinical Service Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - James Baker
- Emerging infections and Parasitology laboratory, Nutrition and Clinical Service Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Debashis Ghosh
- Emerging infections and Parasitology laboratory, Nutrition and Clinical Service Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Emily R. Adams
- Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | | | | | - Ariful Basher
- Department of Medicine, Infectious Disease Hospital, Dhaka, Bangladesh
| | - Proggananda Nath
- Infectious diseases and Tropical Medicine, Mymensingh Medical College and Hospital, Mymensingh, Bangladesh
| | - Fatima Aktar
- Research, HDT Bio-Corp., Seattle, WA, United States
| | - Israel Cruz
- Neglected Tropical Diseases, Foundation for Innovative New Diagnostics, Geneva, Switzerland
- International Health Department, National School of Public Health, Instituto de Salud Carlos III, Madrid, Spain
| | - Dinesh Mondal
- Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
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Dubey P, Das A, Priyamvada K, Bindroo J, Mahapatra T, Mishra PK, Kumar A, Franco AO, Rooj B, Sinha B, Pradhan S, Banerjee I, Kumar M, Bano N, Kumar C, Prasad C, Chakraborty P, Kumar R, Kumar N, Kumar A, Singh AK, Kundan K, Babu S, Shah H, Karthick M, Roy N, Gill NK, Dwivedi S, Chaudhuri I, Hightower AW, Chapman LAC, Singh C, Sharma MP, Dhingra N, Bern C, Srikantiah S. Development and Evaluation of Active Case Detection Methods to Support Visceral Leishmaniasis Elimination in India. Front Cell Infect Microbiol 2021; 11:648903. [PMID: 33842396 PMCID: PMC8024686 DOI: 10.3389/fcimb.2021.648903] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 03/01/2021] [Indexed: 11/13/2022] Open
Abstract
As India moves toward the elimination of visceral leishmaniasis (VL) as a public health problem, comprehensive timely case detection has become increasingly important, in order to reduce the period of infectivity and control outbreaks. During the 2000s, localized research studies suggested that a large percentage of VL cases were never reported in government data. However, assessments conducted from 2013 to 2015 indicated that 85% or more of confirmed cases were eventually captured and reported in surveillance data, albeit with significant delays before diagnosis. Based on methods developed during these assessments, the CARE India team evolved new strategies for active case detection (ACD), applicable at large scale while being sufficiently effective in reducing time to diagnosis. Active case searches are triggered by the report of a confirmed VL case, and comprise two major search mechanisms: 1) case identification based on the index case's knowledge of other known VL cases and searches in nearby houses (snowballing); and 2) sustained contact over time with a range of private providers, both formal and informal. Simultaneously, house-to-house searches were conducted in 142 villages of 47 blocks during this period. We analyzed data from 5030 VL patients reported in Bihar from January 2018 through July 2019. Of these 3033 were detected passively and 1997 via ACD (15 (0.8%) via house-to-house and 1982 (99.2%) by light touch ACD methods). We constructed multinomial logistic regression models comparing time intervals to diagnosis (30-59, 60-89 and ≥90 days with <30 days as the referent). ACD and younger age were associated with shorter time to diagnosis, while male sex and HIV infection were associated with longer illness durations. The advantage of ACD over PCD was more marked for longer illness durations: the adjusted odds ratios for having illness durations of 30-59, 60-89 and >=90 days compared to the referent of <30 days for ACD vs PCD were 0.88, 0.56 and 0.42 respectively. These ACD strategies not only reduce time to diagnosis, and thus risk of transmission, but also ensure that there is a double check on the proportion of cases actually getting captured. Such a process can supplement passive case detection efforts that must go on, possibly perpetually, even after elimination as a public health problem is achieved.
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Affiliation(s)
- Pushkar Dubey
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Aritra Das
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Khushbu Priyamvada
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Joy Bindroo
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Tanmay Mahapatra
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Prabhas Kumar Mishra
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Ankur Kumar
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Ana O. Franco
- Institute for Global Health Sciences, Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, United States
| | - Basab Rooj
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Bikas Sinha
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Sreya Pradhan
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Indranath Banerjee
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Manash Kumar
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Nasreen Bano
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Chandan Kumar
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Chandan Prasad
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Parna Chakraborty
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Rakesh Kumar
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Niraj Kumar
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Aditya Kumar
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Abhishek Kumar Singh
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Kumar Kundan
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Sunil Babu
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Hemant Shah
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Morchan Karthick
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Nupur Roy
- National Vector Borne Disease Control Programme, Ministry of Health and Family Welfare, Government of India, Delhi, India
| | - Naresh Kumar Gill
- National Vector Borne Disease Control Programme, Ministry of Health and Family Welfare, Government of India, Delhi, India
| | - Shweta Dwivedi
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Indrajit Chaudhuri
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | | | - Lloyd A C. Chapman
- Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
- Centre for Mathematical Modelling of Infectious Disease, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Chandramani Singh
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Patna, India
| | | | - Neeraj Dhingra
- National Vector Borne Disease Control Programme, Ministry of Health and Family Welfare, Government of India, Delhi, India
| | - Caryn Bern
- Institute for Global Health Sciences, Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, United States
| | - Sridhar Srikantiah
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
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Bindroo J, Priyamvada K, Chapman LAC, Mahapatra T, Sinha B, Banerjee I, Mishra PK, Rooj B, Kundan K, Roy N, Gill NK, Hightower A, Sharma MP, Dhingra N, Bern C, Srikantiah S. Optimizing Village-Level Targeting of Active Case Detection to Support Visceral Leishmaniasis Elimination in India. Front Cell Infect Microbiol 2021; 11:648847. [PMID: 33842395 PMCID: PMC8024562 DOI: 10.3389/fcimb.2021.648847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 03/01/2021] [Indexed: 11/13/2022] Open
Abstract
Background India has made major progress in improving control of visceral leishmaniasis (VL) in recent years, in part through shortening the time infectious patients remain untreated. Active case detection decreases the time from VL onset to diagnosis and treatment, but requires substantial human resources. Targeting approaches are therefore essential to feasibility. Methods We analyzed data from the Kala-azar Management Information System (KAMIS), using village-level VL cases over specific time intervals to predict risk in subsequent years. We also graphed the time between cases in villages and examined how these patterns track with village-level risk of additional cases across the range of cumulative village case-loads. Finally, we assessed the trade-off between ACD effort and yield. Results In 2013, only 9.3% of all villages reported VL cases; this proportion shrank to 3.9% in 2019. Newly affected villages as a percentage of all affected villages decreased from 54.3% in 2014 to 23.5% in 2019, as more surveillance data accumulated and overall VL incidence declined. The risk of additional cases in a village increased with increasing cumulative incidence, reaching approximately 90% in villages with 12 cases and 100% in villages with 45 cases, but the vast majority of villages had small cumulative case numbers. The time-to-next-case decreased with increasing case-load. Using a 3-year window (2016-2018), a threshold of seven VL cases at the village level selects 329 villages and yields 23% of cases reported in 2019, while a threshold of three cases selects 1,241 villages and yields 46% of cases reported in 2019. Using a 6-year window increases both effort and yield. Conclusion Decisions on targeting must consider the trade-off between number of villages targeted and yield and will depend upon the operational efficiencies of existing programs and the feasibility of specific ACD approaches. The maintenance of a sensitive, comprehensive VL surveillance system will be crucial to preventing future VL resurgence.
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Affiliation(s)
- Joy Bindroo
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Khushbu Priyamvada
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Lloyd A. C. Chapman
- Department of Medicine, University of California San Francisco, San Francisco, CA, United States
- Centre for Mathematical Modelling of Infectious Disease, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Tanmay Mahapatra
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Bikas Sinha
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Indranath Banerjee
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Prabhas Kumar Mishra
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Basab Rooj
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Kumar Kundan
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
| | - Nupur Roy
- National Vector-Borne Disease Control Programme, Ministry of Health & Family Welfare, Government of India, New Delhi, India
| | - Naresh Kumar Gill
- National Vector-Borne Disease Control Programme, Ministry of Health & Family Welfare, Government of India, New Delhi, India
| | | | | | - Neeraj Dhingra
- National Vector-Borne Disease Control Programme, Ministry of Health & Family Welfare, Government of India, New Delhi, India
| | - Caryn Bern
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco CA, United States
| | - Sridhar Srikantiah
- Bihar Technical Support Program, CARE-India Solutions for Sustainable Development, Patna, India
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Guldemir D, Usluca S, Nalbantoglu AS. Genome Sequencing of Leishmania infantum Causing Cutaneous Leishmaniosis from a Turkish Isolate with Next-Generation Sequencing Technology. Acta Parasitol 2021; 66:75-80. [PMID: 32691361 DOI: 10.1007/s11686-020-00252-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 07/06/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE Leishmania subgenus Leishmania causes leishmaniosis, which is a chronic systemic disease in humans and animals, in which the skin and visceral organs can be affected. The disease generally consists of three different clinical types in humans: visceral (kala-azar, VL), cutaneous (CL) and mucocutaneous leishmaniosis (MCL). According to the World Health Organization (WHO), leishmaniosis is still one of the world's most neglected diseases. It has been nearly 13-14 years since the completion of the first complete genome sequence of a Leishmania parasite. However, much information about these parasites remains to be elucidated, such as the causes of differences in tissue tropism. The aim of this study is to perform the whole-genome sequencing of Leishmania infantum causing cutaneous leishmaniosis from a Turkish isolate with next-generation sequencing technology. METHODS Genomic sequencing was performed on the Illumina HiSeq 2500 platform. The TruSeq Nano DNA Low Throughput Library Prep Kit, compatible with the Illumina HiSeq 2500 platform, was used to generate the library. Synthesis sequencing (SBS) was performed with a HiSeq Rapid SBS Kit v2 to generate single-fragment reads (2 × 150 bp; PE) with two fragment end-to-end assemblies. Bioinformatics analyses were performed on the Geneious 11.0.5. ( www.genius.com ) platform. RESULTS In our study, a high-quality whole-genome sequence (WGS) of L. infantum was successfully generated, and a total of 32,009,137 base pairs of genomic DNA from 36 chromosomes were obtained. The resulting genomic DNA sequence was submitted to the US National Center for Biotechnology Information (NCBI) GenBank ( www.ncbi.nlm.nih.gov ) database and registered under the name Leishmania infantum_TR01 (Lin_TR01). The following accession numbers were assigned by NCBI to the 36 chromosomes of the Lin_TR01 genome: CP027807, CP027810, CP027808, CP027811, CP027809, CP027812, CP027813, CP027814, CP027817, CP027818, CP027819, CP027815, CP027821, CP027816, CP027823, CP027820, CP027822, CP027824, CP027825, CP027826, CP027827, CP027828, CP027829, CP027830, CP027831, CP027832, CP027833, CP027834, CP027835, CP027836, CP027837, CP027838, CP027839, CP027840, CP027841, CP027842. As a result of the annotation of the Lin_TR01 genome, 3153 polymorphisms, 8324 genes, 8199 CDSs, 8109 mRNAs, 67 tRNAs, 11 rRNAs and 58 ncRNA were identified. Among the 8199 CDS obtained, 5278 encode hypothetical proteins. CONCLUSION In this study, a high-quality WGS of Leishmania infantum was successfully obtained for the first time in Turkey. According to a review of WGS studies on this subject, the Lin_TR01 strain is the first strain to be isolated from cutaneous leishmaniosis. The reference genome of L. infantum JPCM5 (Peacock et al., 2007) was obtained from a visceral leishmaniosis case, in accordance with the classical tissue and organ tropism of the species. Lin_TR01 is the second whole-genome-sequenced strain in the world after the JPCM5 strain. The Lin_TR01 genome is the only L. infantum whole-genome sequence that is completed assembly level from 36 chromosomes among the genomes obtained thus far ( https://www.ncbi.nlm.nih.gov/genome/genomes/249 ).
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Affiliation(s)
- Dilek Guldemir
- Public Health General Directorate, Microbiology Reference Laboratories Department, National Parasitology Reference Laboratory, Saglik Mah. Adnan Saygun Cad. No:55, Sihhiye, 06100, Ankara, Turkey.
- Department of Parasitology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey.
| | - Selma Usluca
- Public Health General Directorate, Microbiology Reference Laboratories Department, National Parasitology Reference Laboratory, Saglik Mah. Adnan Saygun Cad. No:55, Sihhiye, 06100, Ankara, Turkey
| | - Ayse Serpil Nalbantoglu
- Department of Parasitology, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
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Gonçalves R, de Souza CF, Rontani RB, Pereira A, Farnes KB, Gorsich EE, Silva RA, Brazil RP, Hamilton JGC, Courtenay O. Community deployment of a synthetic pheromone of the sand fly Lutzomyia longipalpis co-located with insecticide reduces vector abundance in treated and neighbouring untreated houses: Implications for control of Leishmania infantum. PLoS Negl Trop Dis 2021; 15:e0009080. [PMID: 33534804 PMCID: PMC7886189 DOI: 10.1371/journal.pntd.0009080] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 02/16/2021] [Accepted: 12/17/2020] [Indexed: 01/29/2023] Open
Abstract
Background The rising incidence of visceral leishmaniasis due to Leishmania infantum requires novel methods to control transmission by the sand fly vector. Indoor residual spraying of insecticide (IRS) against these largely exophilic / exophagic vectors may not be the most effective method. A synthetic copy of the male sex-aggregation pheromone of the key vector species Lutzomyia longipalpis in the Americas, was co-located with residual pyrethroid insecticide, and tested for its effects on vector abundance, hence potential transmission, in a Brazilian community study. Methods Houses within eight defined semi-urban blocks in an endemic municipality in Brazil were randomised to synthetic pheromone + insecticide or to placebo treatments. A similar number of houses located >100m from each block were placebo treated and considered as “True Controls” (thus, analysed as three trial arms). Insecticide was sprayed on a 2.6m2 surface area of the property boundary or outbuilding wall, co-located within one metre of 50mg synthetic pheromone in controlled-release dispensers. Vector numbers captured in nearby CDC light traps were recorded at monthly intervals over 3 months post intervention. Recruited sentinel houses under True Control and pheromone + insecticide treatments were similarly monitored at 7–9 day intervals. The intervention effects were estimated by mixed effects negative binomial models compared to the True Control group. Results Dose-response field assays using 50mg of the synthetic pheromone captured a mean 4.8 (95% C.L.: 3.91, 5.80) to 6.3 (95% C.L.: 3.24, 12.11) times more vectors (female Lu. longipalpis) than using 10mg of synthetic pheromone. The intervention reduced household female vector abundance by 59% (C.L.: 48.7, 66.7%) (IRR = 0.41) estimated by the cross-sectional community study, and by 70% (C.L.: 56.7%, 78.8%) estimated by the longitudinal sentinel study. Similar reductions in male Lu. longipalpis were observed. Beneficial spill-over intervention effects were also observed at nearby untreated households with a mean reduction of 24% (95% C.L.: 0.050%, 39.8%) in female vectors. The spill-over effect in untreated houses was 44% (95% C.L.: 29.7%, 56.1%) as effective as the intervention in pheromone-treated houses. Ownership of chickens increased the intervention effects in both treated and untreated houses, attributed to the suspected synergistic attraction of the synthetic pheromone and chicken kairomones. The variation in IRR between study blocks was not associated with inter-household distances, household densities, or coverage (proportion of total households treated). Conclusions The study confirms the entomological efficacy of the lure-and-kill method to reduce the abundance of this important sand fly vector in treated and untreated homesteads. The outcomes were achieved by low coverage and using only 1–2% of the quantity of insecticide as normally required for IRS, indicating the potential cost-effectiveness of this method. Implications for programmatic deployment of this vector control method are discussed. The predominant sand fly vector of the intracellular parasite Leishmania infantum, that causes human and canine visceral leishmaniasis in the Americas, is Lutzomyia longipalpis. Vector control tools to reduce transmission are needed. A sex-aggregation pheromone released by male Lu. longipalpis attracts female conspecifics which facilitates blood-feeding and transmission. This study, conducted in Brazil, quantifies the effects of community deployment of a synthetic version of the sex-aggregation pheromone, in a controlled-release dispenser, and co-located with lethal insecticide applied to a small area of the household compound or outbuilding wall. 50mg synthetic pheromone dispensers were used since they attracted substantially more vectors than 10mg dispensers. Deploying this novel lure-and-kill method to houses in eight replicate study blocks in two suburban endemic areas, demonstrated that it reduces vector numbers at both pheromone + insecticide treated houses, and neighbouring untreated houses. The presence of chickens (a known additional attraction to blood-seeking female Lu. longipalpis) increased the beneficial effects of the intervention. The method used only 1–2% of the quantity of insecticide necessary for IRS for an average sized house. The results demonstrate the efficacy and potential cost-effectiveness of this novel lure-and-kill control method.
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Affiliation(s)
- Raquel Gonçalves
- Zeeman Institute and School of Life Sciences, University of Warwick, Coventry, United Kingdom
| | - Cristian F. de Souza
- Laboratório de Doenças Parasitárias, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Reila B. Rontani
- Laboratório de Doenças Parasitárias, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Alisson Pereira
- Laboratório de Doenças Parasitárias, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Katie B. Farnes
- Zeeman Institute and School of Life Sciences, University of Warwick, Coventry, United Kingdom
| | - Erin E. Gorsich
- Zeeman Institute and School of Life Sciences, University of Warwick, Coventry, United Kingdom
| | - Rafaella A. Silva
- Núcleo de Medicina Tropical, Universidade de Brasilia, Brasília, Federal District, Brazil
- Ministério da Saúde, Departamento de Imunização e Doenças Transmissíveis, Secretaria de Vigilância em Saúde, Brasília, Federal District, Brazil
| | - Reginaldo P. Brazil
- Laboratório de Doenças Parasitárias, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - James G. C. Hamilton
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Bailrigg, Lancaster, Lancashire, United Kingdom
- * E-mail: (JH); (OC)
| | - Orin Courtenay
- Zeeman Institute and School of Life Sciences, University of Warwick, Coventry, United Kingdom
- * E-mail: (JH); (OC)
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Lypaczewski P, Zhang WW, Matlashewski G. Evidence that a naturally occurring single nucleotide polymorphism in the RagC gene of Leishmania donovani contributes to reduced virulence. PLoS Negl Trop Dis 2021; 15:e0009079. [PMID: 33621241 PMCID: PMC7901767 DOI: 10.1371/journal.pntd.0009079] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 12/16/2020] [Indexed: 11/18/2022] Open
Abstract
Leishmaniasis is a widespread neglected tropical disease transmitted by infected sand flies resulting in either benign cutaneous infection or fatal visceral disease. Leishmania donovani is the principal species responsible for visceral leishmaniasis, yet an atypical L. donovani has become attenuated in several countries including Sri Lanka and causes cutaneous leishmaniasis. Previous studies have identified 91 genes altered in the atypical cutaneous L. donovani compared to typical visceral disease associated L. donovani including mutations in the RagC and Raptor genes that are part of the eukaryotic conserved TOR pathway and its upstream sensing pathway. In the present study, we investigate whether the RagC R231C mutation present in atypical cutaneous L. donovani introduced into the virulent L. donovani 1S2D chromosome by CRISPR gene editing could affect virulence for survival in visceral organs. Through bioinformatic analysis, we further investigated the presence of sensing pathway components upstream of TOR in L. donovani including RagC complexing proteins, RagA and Raptor. L. donovani 1S2D edited to express mutant RagC R231C were viable in promastigote but had reduced visceral parasitemia in infected BALB/c mice. The RagC R231C mutant retained the ability to interact with RagA and gene knockout experiments revealed that although the RagA gene was essential, the RagC gene was not essential under promastigote culture conditions but was essential for survival in the liver of experimentally infected mice. These results provide evidence that the TOR associated sensing pathway plays a prominent role in L. donovani visceral disease and the RagC R231C mutation contributed to the atypical pathology of cutaneous L. donovani in Sri Lanka.
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Affiliation(s)
- Patrick Lypaczewski
- Department of Microbiology and Immunology, McGill University, Montreal, Canada
| | - Wen-Wei Zhang
- Department of Microbiology and Immunology, McGill University, Montreal, Canada
| | - Greg Matlashewski
- Department of Microbiology and Immunology, McGill University, Montreal, Canada
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Blackwell JM, Fakiola M, Singh OP. Genetics, Transcriptomics and Meta-Taxonomics in Visceral Leishmaniasis. Front Cell Infect Microbiol 2020; 10:590888. [PMID: 33324576 PMCID: PMC7723821 DOI: 10.3389/fcimb.2020.590888] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/20/2020] [Indexed: 12/26/2022] Open
Abstract
Visceral leishmaniasis (VL) caused by parasites of the Leishmania donovani complex can be fatal in susceptible individuals. Understanding the interactions between host and pathogen is one way to obtain leads to develop better drugs and for vaccine development. In recent years multiple omics-based approaches have assisted researchers to gain a more global picture of this interaction in leishmaniasis. Here we review results from studies using three omics-based approaches to study VL caused by L. donovani in India: (i) chip-based analysis of single nucleotide variants in the first genome-wide association study of host genetic risk factors for VL, followed by analysis of epitope binding to HLA DRB1 risk versus protective alleles; (ii) transcriptional profiling demonstrating pathways important in Amphotericin B treated compared to active VL cases, including demonstration that anti-interleukin-10 unleashes a storm of chemokines and cytokines in whole blood responses to soluble leishmania antigen in active cases; and (iii) a meta-taxonomic approach based on sequencing amplicons derived from regions of 16S ribosomal RNA (16S rRNA) and 18S rRNA genes that allowed us to determine composition of both prokaryotic and eukaryotic gut microflora in VL cases compared to endemic controls. Overall, our omics-based approaches demonstrate that global analyses of genetic risk factors, host responses to infection, and the interaction between host, parasite and the microbiome can point to the most critical factors that determine the outcome of infection.
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Affiliation(s)
- Jenefer M. Blackwell
- Telethon Kids Institute, The University of Western Australia, Nedlands, WA, Australia
| | | | - Om Prakash Singh
- Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, India
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