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Browne DJ, Kelly AM, Brady J, Proietti C, Sarathkumara YD, Pattinson DJ, Doolan DL. Evaluating the stability of host-reference gene expression and simultaneously quantifying parasite burden and host immune responses in murine malaria. Sci Rep 2023; 13:21071. [PMID: 38030676 PMCID: PMC10687243 DOI: 10.1038/s41598-023-48066-9] [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: 09/06/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023] Open
Abstract
The efficacy of pre-erythrocytic stage malaria antigens or vaccine platforms is routinely assessed in murine models challenged with Plasmodium sporozoites. Relative liver-stage parasite burden is quantified using reverse transcription quantitative PCR (RTqPCR), which relies on constitutively expressed endogenous control reference genes. However, the stability of host-reference gene expression for RTqPCR analysis following Plasmodium challenge and immunization has not been systematically evaluated. Herein, we evaluated the stability of expression of twelve common RTqPCR reference genes in a murine model of Plasmodium yoelii sporozoite challenge and DNA-adenovirus IV 'Prime-Target' immunization. Significant changes in expression for six of twelve reference genes were shown by one-way ANOVA, when comparing gene expression levels among challenge, immunized, and naïve mice groups. These changes were attributed to parasite challenge or immunization when comparing group means using post-hoc Bonferroni corrected multiple comparison testing. Succinate dehydrogenase (SDHA) and TATA-binding protein (TBP) were identified as stable host-reference genes suitable for relative RTqPCR data normalisation, using the RefFinder package. We defined a robust threshold of 'partial-protection' with these genes and developed a strategy to simultaneously quantify matched host parasite burden and cytokine responses following immunisation or challenge. This is the first report systematically identifying reliable host reference genes for RTqPCR analysis following Plasmodium sporozoite challenge. A robust RTqPCR protocol incorporating reliable reference genes which enables simultaneous analysis of host whole-liver cytokine responses and parasite burden will significantly standardise and enhance results between international malaria vaccine efficacy studies.
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Affiliation(s)
- Daniel J Browne
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4870, Australia
| | - Ashton M Kelly
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4870, Australia
- Institute for Molecular Bioscience, The University of Queensland, 306 Carmody Rd, St Lucia, QLD, 4072, Australia
| | - Jamie Brady
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4870, Australia
| | - Carla Proietti
- Institute for Molecular Bioscience, The University of Queensland, 306 Carmody Rd, St Lucia, QLD, 4072, Australia
| | - Yomani D Sarathkumara
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4870, Australia
- Institute for Molecular Bioscience, The University of Queensland, 306 Carmody Rd, St Lucia, QLD, 4072, Australia
| | - David J Pattinson
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4870, Australia
| | - Denise L Doolan
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4870, Australia.
- Institute for Molecular Bioscience, The University of Queensland, 306 Carmody Rd, St Lucia, QLD, 4072, Australia.
- Centre for Tropical Bioinformatics and Molecular Biology, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4870, Australia.
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2
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Argirion I, Pfeiffer RM, Proietti C, Coghill AE, Yu KJ, Middeldorp JM, Sarathkumara YD, Hsu WL, Chien YC, Lou PJ, Wang CP, Rothman N, Lan Q, Chen CJ, Mbulaiteye SM, Jarrett RF, Glimelius I, Smedby KE, Hjalgrim H, Hildesheim A, Doolan DL, Liu Z. Comparative Analysis of the Humoral Immune Response to the EBV Proteome across EBV-Related Malignancies. Cancer Epidemiol Biomarkers Prev 2023; 32:687-696. [PMID: 36788424 PMCID: PMC10159936 DOI: 10.1158/1055-9965.epi-22-0452] [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: 04/22/2022] [Revised: 07/14/2022] [Accepted: 02/13/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Epstein-Barr virus (EBV) is linked to multiple cancers, including classical Hodgkin lymphoma (cHL), endemic Burkitt lymphoma (eBL), nasopharyngeal carcinoma (NPC), and extranodal natural killer/T-cell lymphoma (NKTCL). METHODS Anti-EBV IgG and IgA antibody responses targeting 202 sequences from 86 EBV proteins were measured using the same EBV whole proteome array across four case-control studies investigating EBV-positive cHL, eBL, NPC, and NKTCL (407 cases/620 controls). We grouped EBV-targeted antibodies into pathways by immunoglobulin type (IgA and IgG) and life-cycle stage (latent, immediate early lytic, early lytic, late lytic, and glycoprotein) and evaluated their association with each cancer type. In an additional analysis, we focused on the subset of 46 individual antibodies representing the top candidates for each cancer and compared their associations across the four cancer types using multivariable linear regression models. RESULTS IgA antibody responses targeting all EBV life-cycle stages were associated with NPC but limited to anti-early lytic stage for cHL. NPC and eBL were associated with IgG antibodies across the viral life cycle; cHL with antibodies in the early lytic, late lytic and glycoprotein stages; and NKTCL with antibodies in the latent, immediate early lytic and early lytic phases. EBNA3A, BBLF1, BDLF4, and BLRF2 IgG antibodies were associated with all cancer types. CONCLUSIONS Our observed similarities and differences across four EBV-associated cancers may inform EBV-related oncogenesis. IMPACT Understanding the comparative humoral immune response across EBV-related cancers may aid in identifying shared etiologic roles of EBV proteins and inform unique pathogenic processes for each cancer.
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Affiliation(s)
- Ilona Argirion
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Ruth M. Pfeiffer
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Carla Proietti
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health & Medicine, James Cook University, Cairns, QLD, Australia
| | - Anna E. Coghill
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
- Cancer Epidemiology Program, Division of Population Sciences, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Kelly J. Yu
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | | | - Yomani D. Sarathkumara
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health & Medicine, James Cook University, Cairns, QLD, Australia
| | - Wan-Lun Hsu
- Master Program of Big Data in Biomedicine, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
- Data Science Center, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Yin-Chu Chien
- Genomics Research Center, Academica Sinica, Taipei, Taiwan
- National Institute of Cancer Research, National Health Research Institute, Miaoli, Taiwan
| | - Pei-Jen Lou
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Cheng-Ping Wang
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Chien-Jen Chen
- Genomics Research Center, Academica Sinica, Taipei, Taiwan
- Graduate Institute of Epidemiology and Prevention Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Sam M. Mbulaiteye
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Ruth F. Jarrett
- MRC-University of Glasgow Centre for Virus Research, Glasgow, United Kingdom
| | - Ingrid Glimelius
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Karin E. Smedby
- Department of Medicine Solna, Division of Clinical Epidemiology, Karolinska Institutet, Stockholm, Sweden
| | - Henrik Hjalgrim
- Statens Serum Institut, Copenhagen, Denmark
- Department of Haematology, Rigshospitalet, Copenhagen, Denmark
| | - Allan Hildesheim
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Denise L. Doolan
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health & Medicine, James Cook University, Cairns, QLD, Australia
| | - Zhiwei Liu
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
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3
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Gamage CD, Nanayakkara S, Sarathkumara YD, Muthusinghe DS, Shimizu K, Arikawa J, Lokupathirage SMW, Nanayakkara N, Gunarathne L, Chandrajith R, Harada KH, Koizumi A, Yoshimatsu K. Hantavirus infection as a risk factor for chronic kidney disease of unknown aetiology (CKDu) and its prevalence in endemic areas of Sri Lanka since 2010 according to a retrospective serological analysis. J Med Microbiol 2022; 71. [PMID: 36748416 DOI: 10.1099/jmm.0.001630] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background. Chronic kidney disease of unknown aetiology (CKDu) is a major public health problem in Sri Lanka, especially among agrarian communities. Although the cause of CKDu is still unknown, hantavirus infection has been proposed as a risk factor.Methods. This study was performed using serological samples collected from two CKDu-endemic areas, Anuradhapura (2010) and Badulla districts (2010 and 2016), and a non-endemic area, Matale (2016) district. The presence of anti-Thailand orthohantavirus IgG antibodies was investigated in serum samples. Hantavirus seroprevalence and demographic data were epidemiologically analysed.Results. Seroprevalence was higher in CKDu patients (40.6-60.0 %) and healthy individuals in CKDu-endemic areas (17.6-25.5 %) than in healthy individuals in non-endemic areas (3.0 %). Statistically significant odds ratios (ORs) for hantavirus infection in CKDu patients were detected in CKDu-endemic areas [ORs: 3.2 and 3.1; 95 % confidence interval (CI): 1.8-5.5 and 1.8-5.2 in Anuradhapura and Badulla districts in 2010; and OR: 4.4, 95 % CI: 2.3-8.5 in 2016 in Badulla district). Furthermore, the OR for hantavirus infection in Badulla district has increased in the last decade from 3.1 (95 % CI: 1.8-5.3) to 4.4 (95 % CI: 2.3-8.5).Conclusion. Hantavirus infection has been prevalent in two distant CKDu-endemic areas since 2010. The observed significant association of hantavirus seropositivity with CKDu indicates a possible role of hantavirus infection in CKDu pathogenesis.
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Affiliation(s)
- Chandika D Gamage
- Department of Microbiology, Faculty of Medicine, University of Peradeniya, 20400 Peradeniya, Sri Lanka
| | - Shanika Nanayakkara
- School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Surry Hills, NSW 2010, Australia.,Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto 606-8501, Japan
| | - Yomani D Sarathkumara
- Department of Microbiology, Faculty of Medicine, University of Peradeniya, 20400 Peradeniya, Sri Lanka.,Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD 4870, Australia
| | - Devinda S Muthusinghe
- Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0815, Japan.,Institute for Genetic Medicine, Hokkaido University, Sapporo 060-0815, Japan
| | - Kenta Shimizu
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Jiro Arikawa
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Sithumini M W Lokupathirage
- Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0815, Japan.,Institute for Genetic Medicine, Hokkaido University, Sapporo 060-0815, Japan
| | - Nishantha Nanayakkara
- Nephrology and Transplantation Unit, Teaching Hospital Kandy, 20000 Kandy, Sri Lanka
| | | | - Rohana Chandrajith
- Department of Geology, Faculty of Science, University of Peradeniya, 20400 Peradeniya, Sri Lanka
| | - Kouji H Harada
- Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto 606-8501, Japan
| | - Akio Koizumi
- Institute of Public Health and Welfare Research, Ukyo-ku, Kyoto 616-8141, Japan.,Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto 606-8501, Japan
| | - Kumiko Yoshimatsu
- Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0815, Japan.,Institute for Genetic Medicine, Hokkaido University, Sapporo 060-0815, Japan
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Sarathkumara YD, Browne DJ, Kelly AM, Pattinson DJ, Rush CM, Warner J, Proietti C, Doolan DL. The Effect of Tropical Temperatures on the Quality of RNA Extracted from Stabilized Whole-Blood Samples. Int J Mol Sci 2022; 23:ijms231810609. [PMID: 36142559 PMCID: PMC9503649 DOI: 10.3390/ijms231810609] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 11/26/2022] Open
Abstract
Whole-blood-derived transcriptional profiling is widely used in biomarker discovery, immunological research, and therapeutic development. Traditional molecular and high-throughput transcriptomic platforms, including molecular assays with quantitative PCR (qPCR) and RNA-sequencing (RNA-seq), are dependent upon high-quality and intact RNA. However, collecting high-quality RNA from field studies in remote tropical locations can be challenging due to resource restrictions and logistics of post-collection processing. The current study tested the relative performance of the two most widely used whole-blood RNA collection systems, PAXgene® and Tempus™, in optimal laboratory conditions as well as suboptimal conditions in tropical field sites, including the effects of extended storage times and high storage temperatures. We found that Tempus™ tubes maintained a slightly higher RNA quantity and integrity relative to PAXgene® tubes at suboptimal tropical conditions. Both PAXgene® and Tempus™ tubes gave similar RNA purity (A260/A280). Additionally, Tempus™ tubes preferentially maintained the stability of mRNA transcripts for two reference genes tested, Succinate dehydrogenase complex, subunit A (SDHA) and TATA-box-binding protein (TBP), even when RNA quality decreased with storage length and temperature. Both tube types preserved the rRNA transcript 18S ribosomal RNA (18S) equally. Our results suggest that Tempus™ blood RNA collection tubes are preferable to PAXgene® for whole-blood collection in suboptimal tropical conditions for RNA-based studies in resource-limited settings.
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Affiliation(s)
- Yomani D. Sarathkumara
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, QLD 4878, Australia
| | - Daniel J. Browne
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, QLD 4878, Australia
| | - Ashton M. Kelly
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, QLD 4878, Australia
| | - David J. Pattinson
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, QLD 4878, Australia
| | - Catherine M. Rush
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, QLD 4878, Australia
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4811, Australia
| | - Jeffrey Warner
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, QLD 4878, Australia
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4811, Australia
| | - Carla Proietti
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, QLD 4878, Australia
| | - Denise L. Doolan
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, QLD 4878, Australia
- Correspondence:
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5
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Liu Z, Sarathkumara YD, Chan JKC, Kwong YL, Lam TH, Ip DKM, Chiu BCH, Xu J, Su YC, Proietti C, Cooper MM, Yu KJ, Bassig B, Liang R, Hu W, Ji BT, Coghill AE, Pfeiffer RM, Hildesheim A, Rothman N, Doolan DL, Lan Q. Characterization of the humoral immune response to the EBV proteome in extranodal NK/T-cell lymphoma. Sci Rep 2021; 11:23664. [PMID: 34880297 PMCID: PMC8655014 DOI: 10.1038/s41598-021-02788-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 11/08/2021] [Indexed: 11/30/2022] Open
Abstract
Extranodal natural killer/T-cell lymphoma (NKTCL) is an aggressive malignancy that has been etiologically linked to Epstein-Barr virus (EBV) infection, with EBV gene transcripts identified in almost all cases. However, the humoral immune response to EBV in NKTCL patients has not been well characterized. We examined the antibody response to EBV in plasma samples from 51 NKTCL cases and 154 controls from Hong Kong and Taiwan who were part of the multi-center, hospital-based AsiaLymph case–control study. The EBV-directed serological response was characterized using a protein microarray that measured IgG and IgA antibodies against 202 protein sequences representing the entire EBV proteome. We analyzed 157 IgG antibodies and 127 IgA antibodies that fulfilled quality control requirements. Associations between EBV serology and NKTCL status were disproportionately observed for IgG rather than IgA antibodies. Nine anti-EBV IgG responses were significantly elevated in NKTCL cases compared with controls and had ORshighest vs. lowest tertile > 6.0 (Bonferroni-corrected P-values < 0.05). Among these nine elevated IgG responses in NKTCL patients, three IgG antibodies (all targeting EBNA3A) are novel and have not been observed for other EBV-associated tumors of B-cell or epithelial origin. IgG antibodies against EBNA1, which have consistently been elevated in other EBV-associated tumors, were not elevated in NKTCL cases. We characterize the antibody response against EBV for patients with NKTCL and identify IgG antibody responses against six distinct EBV proteins. Our findings suggest distinct serologic patterns of this NK/T-cell lymphoma compared with other EBV-associated tumors of B-cell or epithelial origin.
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Affiliation(s)
- Zhiwei Liu
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA.
| | - Yomani D Sarathkumara
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, Australia
| | - John K C Chan
- Department of Pathology, Queen Elizabeth Hospital, Hong Kong, SAR, China
| | - Yok-Lam Kwong
- Queen Mary Hospital, The University of Hong Kong, Hong Kong, SAR, China
| | - Tai Hing Lam
- School of Public Health, Faculty of Medicine, Li Ka Shing (LKS), The University of Hong Kong, Hong Kong, SAR, China
| | - Dennis Kai Ming Ip
- School of Public Health, Faculty of Medicine, Li Ka Shing (LKS), The University of Hong Kong, Hong Kong, SAR, China
| | - Brian C-H Chiu
- Department of Public Health Sciences, University of Chicago, Chicago, USA
| | - Jun Xu
- School of Public Health, Faculty of Medicine, Li Ka Shing (LKS), The University of Hong Kong, Hong Kong, SAR, China
| | - Yu-Chieh Su
- Department of Medicine, School of Medicine, I-Shou University, Kaohsiung, Taiwan.,Division of Hematology-Oncology, Department of Internal Medicine, E-Da Hospital, Kaohsiung, Taiwan
| | - Carla Proietti
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, Australia
| | - Martha M Cooper
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, Australia
| | - Kelly J Yu
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA
| | - Bryan Bassig
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA
| | - Raymond Liang
- Hong Kong Sanatorium & Hospital, Hong Kong, SAR, China
| | - Wei Hu
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA
| | - Bu-Tian Ji
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA
| | - Anna E Coghill
- Cancer Epidemiology Program, Division of Population Sciences, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Ruth M Pfeiffer
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA
| | - Allan Hildesheim
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA
| | - Denise L Doolan
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health of Medicine, James Cook University, Cairns, Australia
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, 9609 Medical Center Drive, National Cancer Institute, Rockville, MD, 20850, USA
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Sarathkumara YD, Gamage CD, Lokupathirage S, Muthusinghe DS, Nanayakkara N, Gunarathne L, Shimizu K, Tsuda Y, Arikawa J, Yoshimatsu K. Exposure to Hantavirus is a Risk Factor Associated with Kidney Diseases in Sri Lanka: A Cross Sectional Study. Viruses 2019; 11:v11080700. [PMID: 31370348 PMCID: PMC6723923 DOI: 10.3390/v11080700] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 05/31/2019] [Revised: 07/16/2019] [Accepted: 07/30/2019] [Indexed: 01/25/2023] Open
Abstract
Chronic kidney disease of unknown etiology (CKDu) imposes a substantial burden on public health in Sri Lankan agricultural communities. High seroprevalences of hantavirus have been reported in CKDu patients in several locations of Sri Lanka. We carried out a cross-sectional study followed by an unmatched case-control comparison in two geographically distinct areas of Sri Lanka, Girandurukotte (CKDu endemic) and Kandy (CKDu non-endemic) to determine whether exposure to hantaviruses is a potential risk factor in patients with kidney disease. An indirect immunofluorescent antibody assay using two antigens, Thailand orthohantavirus-infected and recombinant N protein-expressing Vero E6 cells, were used for serodiagnosis. Participants' demographic and other socio-economic data were collected through a structured questionnaire. Fifty kidney disease patients and 270 controls from Kandy and 104 kidney disease patients and 242 controls from Girandurukotte were examined. Seropositivities were 50% and 17.4% in kidney patients and controls, respectively, in Girandurukotte, and they were 18% and 7% in Kandy. The odds of exposure to hantaviruses were higher for kidney disease patients than for controls in both Girandurukotte (OR:3.66, 95% CI:2.01 to 6.64) and Kandy (OR:2.64, 95% CI:1.07 to 6.54) in binary logistic regression models. According to statistical analysis, individuals exposed to hantaviruses had a higher risk of developing renal impairment. Therefore, hantavirus infection might be an important risk factor for development of kidney disease in Sri Lanka.
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Affiliation(s)
- Yomani D Sarathkumara
- Department of Microbiology, Faculty of Medicine, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Chandika D Gamage
- Department of Microbiology, Faculty of Medicine, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Sithumini Lokupathirage
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Devinda S Muthusinghe
- Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-8638, Japan
| | - Nishantha Nanayakkara
- Nephrology and Transplantation Unit, Teaching Hospital Kandy, Kandy 20000, Sri Lanka
| | | | - Kenta Shimizu
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Yoshimi Tsuda
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Jiro Arikawa
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Kumiko Yoshimatsu
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan.
- Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-8638, Japan.
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7
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Lokupathirage SMW, Muthusinghe DS, Shimizu K, Nishigami K, Noda K, Tsuda Y, Sarathkumara YD, Gunawardana S, Arikawa J, Gamage CD, Yoshimatsu K. Serological Evidence of Thailand Orthohantavirus or Antigenically Related Virus Infection Among Rodents in a Chronic Kidney Disease of Unknown Etiology Endemic Area, Girandurukotte, Sri Lanka. Vector Borne Zoonotic Dis 2019; 19:859-866. [PMID: 31339833 DOI: 10.1089/vbz.2018.2429] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We have reported high seroprevalence to Thailand orthohantavirus (THAIV) or THAIV-related orthohantavirus (TRHV) among patients with chronic kidney disease of unknown etiology in Girandurukotte, Sri Lanka. THAIV or TRHV infection is considered to be transmitted by rodent hosts in this area, but its reservoir rodents have not yet been identified. Hence, 116 rodents were captured, and seroprevalences were examined by indirect immunofluorescent antibody assay (immunofluorescence assay [IFA]) using antigens of THAIV strain Thai749-infected Vero E6 cells and recombinant nucleocapsid protein of THAIV expressed in Vero E6 cell. Molecular biological species identification of rodents was carried out by sequencing rag1, irbp, and mitochondrial cytb genes. The majority (112/116) of the captured rodents were lineage Ib of black rats (Rattus rattus). Among them, 19.6% (22/112) of the rats possessed antibodies against THAIV. Also, a lesser bandicoot rat (Bandicota bengalensis), which belongs to the Sri Lankan endemic genetic lineage, was seropositive (1/1). Two Mus booduga and one Murinae sp. were seronegative. Rodent sera showed less cross-reactivities to antigens of Vero E6 cells infected with Hantaan orthohantavirus (HTNV), Seoul orthohantavirus (SEOV), and Puumala orthohantavirus (PUUV) in IFA. These results suggest that the hantavirus present in rodents in Sri Lanka is related to THAIV or TRHV rather than to SEOV, HTNV, or PUUV. However, it might be serologically distinct from the prototype THAIV strain, Thai749, used in this study. This study revealed that black rats and lesser bandicoot rats belonging to Sri Lankan endemic lineages are possible reservoirs for THAIV or TRHV in Girandurukotte. Further multiple geographical studies are needed to confirm the THAIV or TRHV reservoir status of black and lesser bandicoot rats in Sri Lanka.
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Affiliation(s)
| | | | - Kenta Shimizu
- Department of Microbiology and Immunology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan.,Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Kumpei Nishigami
- Department of Microbiology and Immunology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kisho Noda
- School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yoshimi Tsuda
- Department of Microbiology and Immunology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan.,Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Yomani D Sarathkumara
- Department of Microbiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | | | - Jiro Arikawa
- Department of Microbiology and Immunology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan.,Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Chandika D Gamage
- Department of Microbiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | - Kumiko Yoshimatsu
- Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan.,Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
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Gamage CD, Yoshimatsu K, Sarathkumara YD, Kulendiran T, Nanayakkara N, Arikawa J. Serological evidence of hantavirus infection in Girandurukotte, an area endemic for chronic kidney disease of unknown aetiology (CKDu) in Sri Lanka. Int J Infect Dis 2017; 57:77-78. [PMID: 28212862 DOI: 10.1016/j.ijid.2017.02.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 11/15/2016] [Accepted: 02/05/2017] [Indexed: 10/20/2022] Open
Affiliation(s)
- Chandika D Gamage
- Department of Microbiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | - Kumiko Yoshimatsu
- Department of Microbiology, Hokkaido University Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo 060-8638, Japan.
| | - Yomani D Sarathkumara
- Department of Microbiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | | | | | - Jiro Arikawa
- Department of Microbiology, Hokkaido University Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo 060-8638, Japan
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