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Varghese FS, Meutiawati F, Teppor M, Jacobs S, de Keyzer C, Taşköprü E, van Woudenbergh E, Overheul GJ, Bouma E, Smit JM, Delang L, Merits A, van Rij RP. Posaconazole inhibits multiple steps of the alphavirus replication cycle. Antiviral Res 2021; 197:105223. [PMID: 34856248 DOI: 10.1016/j.antiviral.2021.105223] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/22/2021] [Accepted: 11/27/2021] [Indexed: 11/28/2022]
Abstract
Repurposing drugs is a promising strategy to identify therapeutic interventions against novel and re-emerging viruses. Posaconazole is an antifungal drug used to treat invasive aspergillosis and candidiasis. Recently, posaconazole and its structural analog, itraconazole were shown to inhibit replication of multiple viruses by modifying intracellular cholesterol homeostasis. Here, we show that posaconazole inhibits replication of the alphaviruses Semliki Forest virus (SFV), Sindbis virus and chikungunya virus with EC50 values ranging from 1.4 μM to 9.5 μM. Posaconazole treatment led to a significant reduction of virus entry in an assay using a temperature-sensitive SFV mutant, but time-of-addition and RNA transfection assays indicated that posaconazole also inhibits post-entry stages of the viral replication cycle. Virus replication in the presence of posaconazole was partially rescued by the addition of exogenous cholesterol. A transferrin uptake assay revealed that posaconazole considerably slowed down cellular endocytosis. A single point mutation in the SFV E2 glycoprotein, H255R, provided partial resistance to posaconazole as well as to methyl-β-cyclodextrin, corroborating the effect of posaconazole on cholesterol and viral entry. Our results indicate that posaconazole inhibits multiple steps of the alphavirus replication cycle and broaden the spectrum of viruses that can be targeted in vitro by posaconazole, which could be further explored as a therapeutic agent against emerging viruses.
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Affiliation(s)
- Finny S Varghese
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Febrina Meutiawati
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Mona Teppor
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Sofie Jacobs
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Carolien de Keyzer
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Ezgi Taşköprü
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Esther van Woudenbergh
- Section Pediatric Infectious Diseases, Laboratory of Medical Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands; Centre for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Gijs J Overheul
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Ellen Bouma
- Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Jolanda M Smit
- Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Leen Delang
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Andres Merits
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Ronald P van Rij
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands.
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Affiliation(s)
- Finny S Varghese
- Radboud Institute for Molecular Life Sciences, Radboudumc, Nijmegen
| | | | - Mona Teppor
- Institute of Technology, University of Tartu, Tartu
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Meutiawati F, Bezemer B, Strating JRPM, Overheul GJ, Žusinaite E, van Kuppeveld FJM, van Cleef KWR, van Rij RP. Posaconazole inhibits dengue virus replication by targeting oxysterol-binding protein. Antiviral Res 2018; 157:68-79. [PMID: 29981375 DOI: 10.1016/j.antiviral.2018.06.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 06/08/2018] [Accepted: 06/30/2018] [Indexed: 11/30/2022]
Abstract
Dengue virus (DENV) is associated with an estimated 390 million infections per year, occurring across approximately 100 countries in tropical and sub-tropical regions. To date, there are no antiviral drugs or specific therapies to treat DENV infection. Posaconazole and itraconazole are potent antifungal drugs that inhibit ergosterol biosynthesis in fungal cells, but also target a number of human proteins. Here, we show that itraconazole and posaconazole have antiviral activity against DENV. Posaconazole inhibited replication of multiple serotypes of DENV and the related flavivirus Zika virus, and reduced viral RNA replication, but not translation of the viral genome. We used a combination of knockdown and drug sensitization assays to define the molecular target of posaconazole that mediates its antiviral activity. We found that knockdown of oxysterol-binding protein (OSBP) inhibited DENV replication. Moreover, knockdown of OSBP, but not other known targets of posaconazole, enhanced the inhibitory effect of posaconazole. Our findings imply OSBP as a potential target for the development of antiviral compounds against DENV.
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Affiliation(s)
- Febrina Meutiawati
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands; Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bodine Bezemer
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands; Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jeroen R P M Strating
- Virology Division, Department of Infectious Diseases & Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Gijs J Overheul
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands; Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Eva Žusinaite
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Frank J M van Kuppeveld
- Virology Division, Department of Infectious Diseases & Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Koen W R van Cleef
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands; Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ronald P van Rij
- Department of Medical Microbiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands; Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands.
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Lestari CSW, Yohan B, Yunita A, Meutiawati F, Hayati RF, Trimarsanto H, Sasmono RT. Phylogenetic and evolutionary analyses of dengue viruses isolated in Jakarta, Indonesia. Virus Genes 2017; 53:778-788. [PMID: 28600724 DOI: 10.1007/s11262-017-1474-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 03/15/2017] [Accepted: 06/03/2017] [Indexed: 02/01/2023]
Abstract
Dengue has affected Indonesia for the last five decades and become a major health problem in many cities in the country. Jakarta, the capital of Indonesia, reports dengue cases annually, with several outbreaks documented. To gain information on the dynamic and evolutionary history of dengue virus (DENV) in Jakarta, we conducted phylogenetic and evolutionary analyses of DENV isolated in 2009. Three hundred thirty-three dengue-suspected patients were recruited. Our data revealed that dengue predominantly affected young adults, and the majority of cases were due to secondary infection. A total of 171 virus isolates were successfully serotyped. All four DENV serotypes were circulating in the city, and DENV-1 was the predominant serotype. The DENV genotyping of 17 isolates revealed the presence of Genotypes I and IV in DENV-1, while DENV-2 isolates were grouped into the Cosmopolitan genotype. The grouping of isolates into Genotype I and II was seen for DENV-3 and DENV-4, respectively. Evolutionary analysis revealed the relatedness of Jakarta isolates with other isolates from other cities in Indonesia and isolates from imported cases in other countries. We revealed the endemicity of DENV and the role of Jakarta as the potential source of imported dengue cases in other countries. Our study provides genetic information regarding DENV from Jakarta, which will be useful for upstream applications, such as the study of DENV epidemiology and evolution and transmission dynamics.
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Affiliation(s)
- C S Whinie Lestari
- Center for Research and Development of Biomedical and Basic Health Technology, National Institute of Health Research and Development, Ministry of Health, Jakarta, Indonesia
| | - Benediktus Yohan
- Eijkman Institute for Molecular Biology, Ministry of Research, Technology, and Higher Education, Jakarta, Indonesia
| | - Anisa Yunita
- Center for Research and Development of Biomedical and Basic Health Technology, National Institute of Health Research and Development, Ministry of Health, Jakarta, Indonesia
| | - Febrina Meutiawati
- Eijkman Institute for Molecular Biology, Ministry of Research, Technology, and Higher Education, Jakarta, Indonesia
| | - Rahma Fitri Hayati
- Eijkman Institute for Molecular Biology, Ministry of Research, Technology, and Higher Education, Jakarta, Indonesia
| | - Hidayat Trimarsanto
- Eijkman Institute for Molecular Biology, Ministry of Research, Technology, and Higher Education, Jakarta, Indonesia
| | - R Tedjo Sasmono
- Eijkman Institute for Molecular Biology, Ministry of Research, Technology, and Higher Education, Jakarta, Indonesia.
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Megawati D, Masyeni S, Yohan B, Lestarini A, Hayati RF, Meutiawati F, Suryana K, Widarsa T, Budiyasa DG, Budiyasa N, Myint KSA, Sasmono RT. Dengue in Bali: Clinical characteristics and genetic diversity of circulating dengue viruses. PLoS Negl Trop Dis 2017; 11:e0005483. [PMID: 28531223 PMCID: PMC5456401 DOI: 10.1371/journal.pntd.0005483] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [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: 11/02/2016] [Revised: 06/02/2017] [Accepted: 03/11/2017] [Indexed: 01/28/2023] Open
Abstract
A high number of dengue cases are reported annually in Bali. Despite the endemicity, limited data on dengue is available for Bali localities. Molecular surveillance study was conducted to explore the clinical and virological characteristics of dengue patients in urban Denpasar and rural Gianyar areas in Bali during the peak season in 2015. A total of 205 adult dengue-suspected patients were recruited in a prospective cross-sectional study. Demographic and clinical information were obtained, and dengue screening was performed using NS1 and IgM/IgG ELISAs. Viral RNA was subsequently extracted from patients’ sera for serotyping using conventional RT-PCR and Simplexa Dengue real-time RT-PCR, followed by genotyping with sequencing method. We confirmed 161 patients as having dengue by NS1 and RT-PCR. Among 154 samples successfully serotyped, the DENV-3 was predominant, followed by DENV-1, DENV-2, and DENV-4. Serotype predominance was different between Denpasar and Gianyar. Genotyping results classify DENV-1 isolates into Genotype I and DENV-2 as Cosmopolitan Genotype. The classification grouped isolates into Genotype I and II for DENV-3 and DENV-4, respectively. Clinical parameters showed no relationship between infecting serotypes and severity. We observed the genetic diversity of circulating DENV isolates and their relatedness with historical data and importation to other countries. Our data highlights the role of this tourist destination as a potential source of dengue transmission in the region. Dengue is the most significant mosquito-borne viral disease affecting humans. Up to one third of the world population is at risk of dengue virus (DENV) infection, transmitted through the bite of Aedes mosquitoes. Bali, a well-known international tourist destination, is regularly ravaged by dengue disease. This disease impacts the health of both local people and visitors thus imposing a heavy economic burden. Bali has a constant flow of travelers and labors that contribute to the spread of DENV infection. Detailed characterization of DENV from Bali is limited; most reports are from travel-acquired cases. Here, we study dengue clinical and virological aspects in local Balinese people. We presented the clinical spectrum of the disease and the virological characteristics, observing the circulation of genetically diverse endemic virus strains including strains which are closely related to imported viruses in neighboring countries. The circulation of a lineage of DENV-2 proposed to cause outbreak in the past is also identified. Our study provides data on the genetic of circulating DENV in Bali which are useful for further applications, such as to monitor the virus transmission and outbreak investigation in the region.
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Affiliation(s)
- Dewi Megawati
- Faculty of Medicine and Health Sciences, Warmadewa University, Jl. Terompong No. 24 Denpasar, Bali, Indonesia
| | - Sri Masyeni
- Faculty of Medicine and Health Sciences, Warmadewa University, Jl. Terompong No. 24 Denpasar, Bali, Indonesia
| | - Benediktus Yohan
- Eijkman Institute for Molecular Biology, Jl. Diponegoro No. 69, Jakarta, Indonesia
| | - Asri Lestarini
- Faculty of Medicine and Health Sciences, Warmadewa University, Jl. Terompong No. 24 Denpasar, Bali, Indonesia
| | - Rahma F. Hayati
- Eijkman Institute for Molecular Biology, Jl. Diponegoro No. 69, Jakarta, Indonesia
| | - Febrina Meutiawati
- Eijkman Institute for Molecular Biology, Jl. Diponegoro No. 69, Jakarta, Indonesia
| | - Ketut Suryana
- Wangaya General Hospital. Jl. Kartini No 133 Denpasar, Bali, Indonesia
| | - Tangking Widarsa
- Faculty of Medicine and Health Sciences, Warmadewa University, Jl. Terompong No. 24 Denpasar, Bali, Indonesia
| | - Dewa G. Budiyasa
- Sanjiwani General Hospital. Jl. Ciung Wenara No 2 Gianyar, Bali, Indonesia
| | - Ngurah Budiyasa
- Wangaya General Hospital. Jl. Kartini No 133 Denpasar, Bali, Indonesia
| | - Khin S. A. Myint
- Eijkman Institute for Molecular Biology, Jl. Diponegoro No. 69, Jakarta, Indonesia
| | - R. Tedjo Sasmono
- Eijkman Institute for Molecular Biology, Jl. Diponegoro No. 69, Jakarta, Indonesia
- * E-mail:
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Haryanto S, Hayati RF, Yohan B, Sijabat L, Sihite IF, Fahri S, Meutiawati F, Halim JAN, Halim SN, Soebandrio A, Sasmono RT. The molecular and clinical features of dengue during outbreak in Jambi, Indonesia in 2015. Pathog Glob Health 2016; 110:119-29. [PMID: 27215933 DOI: 10.1080/20477724.2016.1184864] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [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: 12/24/2022] Open
Abstract
Dengue is hyperendemic in Indonesia. In 2015, reported cases of dengue fever doubled those of 2014 in the Jambi municipality of Sumatra. We examined viral aetiology and its relationship with disease outcome in Jambi. Dengue-suspected patients' sera were collected and NS1 detection and IgM/IgG serology were performed. Dengue virus (DENV) serotyping was performed using real-time RT-PCR. Envelope genes were sequenced to determine the genotypes of DENV. Clinical, haematologic, and demographic data were recorded. Of 210 dengue-suspected patients, 107 were confirmed. The disease manifested as Dengue Fever (62%), Dengue Haemorrhagic Fever (36%), and Dengue Shock Syndrome (2%). The serotypes of 94 DENV were determined. All DENV serotypes were detected with DENV-1 as the predominant serotype (66%). Genotypically, the DENV-1 viruses belong to Genotype I, DENV-2 was of Cosmopolitan genotype, DENV-3 as Genotype I, and DENV-4 belonged to Genotype II. Comparison with historical data revealed serotype predominance switched from DENV-3 to DENV-1, and the replacement of Genotype IV of DENV-1 with Genotype I. In summary, DENV-1 predominated during the 2015 dengue outbreak in Jambi. The full spectrum of dengue disease occurred and was characterized by a switch in predominant serotypes.
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Affiliation(s)
- Sotianingsih Haryanto
- a Siloam Hospital , Jambi , Indonesia.,d Faculty of Medicine , Jambi University , Jambi , Indonesia
| | - Rahma F Hayati
- b Eijkman Institute for Molecular Biology , Jakarta , Indonesia
| | | | | | | | - Sukmal Fahri
- c Health Polytechnic , Jambi Provincial Health Office , Jambi , Indonesia
| | | | | | - Stefanie N Halim
- e Faculty of Medicine , Diponegoro University , Semarang , Indonesia
| | - Amin Soebandrio
- b Eijkman Institute for Molecular Biology , Jakarta , Indonesia
| | - R Tedjo Sasmono
- b Eijkman Institute for Molecular Biology , Jakarta , Indonesia
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Popov-Čeleketić D, Bianchi F, Ruiz SJ, Meutiawati F, Poolman B. A Plasma Membrane Association Module in Yeast Amino Acid Transporters. J Biol Chem 2016; 291:16024-37. [PMID: 27226538 DOI: 10.1074/jbc.m115.706770] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Indexed: 12/22/2022] Open
Abstract
Amino acid permeases (AAPs) in the plasma membrane (PM) of Saccharomyces cerevisiae are responsible for the uptake of amino acids and involved in regulation of their cellular levels. Here, we report on a strong and complex module for PM association found in the C-terminal tail of AAPs. Using in silico analyses and mutational studies we found that the C-terminal sequences of Gap1, Bap2, Hip1, Tat1, Tat2, Mmp1, Sam3, Agp1, and Gnp1 are about 50 residues long, associate with the PM, and have features that discriminate them from the termini of organellar amino acid transporters. We show that this sequence (named PMasseq) contains an amphipathic α-helix and the FWC signature, which is palmitoylated by palmitoyltransferase Pfa4. Variations of PMasseq, found in different AAPs, lead to different mobilities and localization patterns, whereas the disruption of the sequence has an adverse effect on cell viability. We propose that PMasseq modulates the function and localization of AAPs along the PM. PMasseq is one of the most complex protein signals for plasma membrane association across species and can be used as a delivery vehicle for the PM.
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Affiliation(s)
- Dušan Popov-Čeleketić
- From the Department of Biochemistry, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, and Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Frans Bianchi
- From the Department of Biochemistry, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, and Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Stephanie J Ruiz
- From the Department of Biochemistry, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, and Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Febrina Meutiawati
- From the Department of Biochemistry, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, and Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Bert Poolman
- From the Department of Biochemistry, University of Groningen, Groningen Biomolecular Sciences and Biotechnology Institute, and Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Sasmono RT, Aryati A, Wardhani P, Yohan B, Trimarsanto H, Fahri S, Setianingsih TY, Meutiawati F. Performance of Simplexa dengue molecular assay compared to conventional and SYBR green RT-PCR for detection of dengue infection in Indonesia. PLoS One 2014; 9:e103815. [PMID: 25102066 PMCID: PMC4125142 DOI: 10.1371/journal.pone.0103815] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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: 12/17/2013] [Accepted: 07/05/2014] [Indexed: 11/18/2022] Open
Abstract
Diagnostic tests based on detection of dengue virus (DENV) genome are available with varying sensitivities and specificities. The Simplexa Dengue assay (Focus Diagnostics) is a newly developed real-time RT-PCR method designed to detect and serotype DENV simultaneously. To assess the performance of the Simplexa Dengue assay, we performed comparison with conventional RT-PCR and SYBR Green real-time RT-PCR on patients sera isolated from eight cities across Indonesia, a dengue endemic country. A total of 184 sera that were confirmed using NS1 and/or IgM and IgG ELISA were examined. Using conventional and SYBR Green real-time RT-PCR, we detected DENV in 53 (28.8%) and 81 (44.0%) out of 184 sera, respectively. When the Simplexa Dengue assay was employed, the detection rate was increased to 76.6% (141 out of 184 samples). When tested in 40 sera that were confirmed by virus isolation as the gold standard, the conventional RT-PCR yielded 95% sensitivity while the sensitivity of SYBR Green real-time RT-PCR and Simplexa Dengue assay reached 97.5% and 100%, respectively. The specificities of all methods were 100% when tested in 43 non-dengue illness and 20 healthy human samples. Altogether, our data showed the higher detection rate of Simplexa Dengue compared to conventional and SYBR Green real-time RT-PCR in field/surveillance setting. In conclusion, Simplexa Dengue offers rapid and accurate detection and typing of dengue infection and is suitable for both routine diagnostic and surveillance.
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Affiliation(s)
| | - Aryati Aryati
- Clinical Pathology Department, School of Medicine and Institute of Tropical Disease, Airlangga University, Surabaya, Indonesia
| | - Puspa Wardhani
- Clinical Pathology Department, School of Medicine and Institute of Tropical Disease, Airlangga University, Surabaya, Indonesia
| | | | - Hidayat Trimarsanto
- Eijkman Institute for Molecular Biology, Jakarta, Indonesia; Agency for the Assessment and Application of Technology, Jakarta, Indonesia
| | - Sukmal Fahri
- Health Polytechnic, Jambi Provincial Health Office, Kotabaru, Jambi, Indonesia and Graduate School in Medicine, Diponegoro University, Semarang, Indonesia
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Nusa R, Prasetyowati H, Meutiawati F, Yohan B, Trimarsanto H, Setianingsih TY, Sasmono RT. Molecular surveillance of Dengue in Sukabumi, West Java province, Indonesia. J Infect Dev Ctries 2014; 8:733-41. [PMID: 24916872 DOI: 10.3855/jidc.3959] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/20/2013] [Accepted: 11/30/2013] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Dengue is endemic and affects people in all Indonesian provinces. Increasing dengue cases have been observed every year in Sukabumi in West Java province. Despite the endemicity, limited data is available on the genetic of dengue viruses (DENV) circulating in the country. To understand the dynamics of dengue disease, we performed molecular and serological surveillance of dengue in Sukabumi. METHODOLOGY A total of 113 patients were recruited for this study. Serological data were obtained using anti-dengue IgM and IgG tests plus dengue NS1 antigen detection. Dengue detection and serotyping were performed using real-time RT-PCR. Viruses were isolated and the envelope genes were sequenced. Phylogenetic and evolutionary analyses were performed to determine the genotype of the viruses and their evolutionary rates. RESULTS Real-time RT-PCR detected DENV in 25 (22%) of 113 samples. Serotyping revealed the predominance of DENV-2 (16 isolates, 64%), followed by DENV-1 (5 isolates, 20%), and DENV-4 (4 isolates, 16%). No DENV-3 was detected in the samples. Co-circulation of genotype I and IV of DENV-1 was observed. The DENV-2 isolates all belonged to the Cosmopolitan genotype, while DENV-4 isolates were grouped into genotype II. Overall, their evolutionary rates were similar to DENV from other countries. CONCLUSIONS We revealed the distribution of DENV serotypes and genotypes in Sukabumi. Compared to data obtained from other cities in Indonesia, we observed the differing predominance of DENV serotypes but similar genotype distribution, where the infecting viruses were closely related with Indonesian endemic viruses isolated previously.
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Affiliation(s)
- Roy Nusa
- Vector Borne Disease Control, Research and Development Council, Ministry of Health of the Republic of Indonesia, Ciamis, West Java, Indonesia.
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