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Vaman RS, Valamparampil MJ, Somasundaran AK, Balakrishnan AJ, Janardhanan P, Rahul A, Pilankatta R, Anish TS. Serotype-specific clinical features and spatial distribution of dengue in northern Kerala, India. J Family Med Prim Care 2024; 13:3049-3058. [PMID: 39228628 PMCID: PMC11368279 DOI: 10.4103/jfmpc.jfmpc_1937_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/27/2024] [Accepted: 02/19/2024] [Indexed: 09/05/2024] Open
Abstract
Background Collection and compilation of spatial, meteorological, entomological, and virological data are critical in mitigating climate-sensitive emerging infections like dengue. This study was a holistic attempt to understand the dengue situation in the Kasaragod district of Kerala, India. Methods This cross-sectional study was conducted in 13 health institutions from June to July 2021. Adult patients presenting with fever and testing positive for NS1 ELISA were subjected to Dengue RT-PCR and serotyping. The spatial and clinical features of the RT-PCR-positive patients, the district's meteorological data, and the vector indices were studied. Results The pre-epidemic months were marked by intermittent rainfall, peak ambient temperature and high larval indices. Among the 136 dengue RT-PCR patients studied, 41.2% had DENV2 followed by DENV1 (22.8%), DENV3 (5.9%) and DENV4 (4.4%); with 25% mixed infections. DENV1 showed a higher risk of gastrointestinal manifestations (80.6%, p=0.019) and musculoskeletal symptoms (77.4%, p=0.026) compared with other serotypes. Conclusions In the context of dengue hyperendemicity, the possibility of an emerging serotype's dominance coupled with the mixing up of strains should warn the health system regarding future outbreaks. Furthermore, the study emphasizes the importance of monitoring larval indices and the window of opportunity to intervene between environmental predictors and dengue outbreaks.
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Affiliation(s)
| | - Mathew J. Valamparampil
- Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
| | - Aswathi Kodenchery Somasundaran
- Department of Biochemistry and Molecular Biology, School of Biological Sciences, Central University of Kerala, Periye, Kasaragod, Kerala, India
| | - Anjali Jayasree Balakrishnan
- Department of Biochemistry and Molecular Biology, School of Biological Sciences, Central University of Kerala, Periye, Kasaragod, Kerala, India
| | - Prajit Janardhanan
- Department of Biochemistry and Molecular Biology, School of Biological Sciences, Central University of Kerala, Periye, Kasaragod, Kerala, India
| | - Arya Rahul
- ICMR Vector Control Research Centre, Department of Health Research, Ministry of Health and Family Welfare, Government of India, Puducherry, India
| | - Rajendra Pilankatta
- Department of Biochemistry and Molecular Biology, School of Biological Sciences, Central University of Kerala, Periye, Kasaragod, Kerala, India
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Agarwal A, Ganvir R, Kale D, Chaurasia D, Kapoor G. Continued dominance of dengue virus serotype 2 during the recent Central India outbreaks (2019-2021) with evidence of genetic divergence. Pathog Glob Health 2024; 118:109-119. [PMID: 37574815 PMCID: PMC11141303 DOI: 10.1080/20477724.2023.2246712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023] Open
Abstract
Central India faced major dengue outbreaks in 2019 and 2021. In the present study, we aimed to identify the dengue virus serotypes and genotypes circulating in Central India during the COVID pre-pandemic year (2019) and ongoing-pandemic year (2021). For this purpose, the suspected cases were first tested by serological assays. Sero-positive samples were then subjected to molecular diagnosis by RT-PCR and semi-nested PCR. The serotypes obtained were confirmed by nucleotide sequencing. A phylogenetic analysis of serotypes was performed to identify the circulating genotypes. All four DENV serotypes were detected during 2019 and 2021, with the predominance of DENV2. Cases with multiple DENV serotype infections were also identified, involving DENV-2 in all the coinfections. Genotyping revealed that DENV-1 (Genotype V, American/African), DENV-2 (Genotype IV, Cosmopolitan), DENV-3 (Genotype III, Cosmopolitan), and DENV-4 (Genotype I) were involved during both outbreaks. DENV-2 detected in 2019 and 2021 has diverged from the previous strains detected in Central India (2016 and 2018), which may account for the higher transmission of DENV-2 during these outbreaks. The detection of heterologous DENV serotypes with high transmission efficiency calls for continuous viral monitoring and surveillance, which will contribute to a better understanding of changing viral dynamics and transmission patterns.
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Affiliation(s)
- Ankita Agarwal
- State Virology Laboratory, Department of Microbiology, Gandhi Medical College, Bhopal, India
| | - Ruchi Ganvir
- Department of Microbiology, Gandhi Medical College, Bhopal, India
| | - Dipesh Kale
- Department of Microbiology, All India Institute of Medical Sciences Bhopal, Bhopal, India
| | - Deepti Chaurasia
- State Virology Laboratory, Department of Microbiology, Gandhi Medical College, Bhopal, India
- Department of Microbiology, Gandhi Medical College, Bhopal, India
| | - Garima Kapoor
- Department of Microbiology, Gandhi Medical College, Bhopal, India
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3
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Kakarla SG, Kondeti PK, Vavilala HP, Boddeda GSB, Mopuri R, Kumaraswamy S, Kadiri MR, Mutheneni SR. Weather integrated multiple machine learning models for prediction of dengue prevalence in India. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2023; 67:285-297. [PMID: 36380258 PMCID: PMC9666965 DOI: 10.1007/s00484-022-02405-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 07/21/2022] [Accepted: 11/04/2022] [Indexed: 05/11/2023]
Abstract
Dengue is a rapidly spreading viral disease transmitted to humans by Aedes mosquitoes. Due to global urbanization and climate change, the number of dengue cases are gradually increasing in recent decades. Hence, an early prediction of dengue continues to be a major concern for public health in countries with high prevalence of dengue. Creating a robust forecast model for the accurate prediction of dengue is a complex task and can be done through various data modelling approaches. In the present study, we have applied vector auto regression, generalized boosted models, support vector regression, and long short-term memory (LSTM) to predict the dengue prevalence in Kerala state of the Indian subcontinent. We consider the number of dengue cases as the target variable and weather variables viz., relative humidity, soil moisture, mean temperature, precipitation, and NINO3.4 as independent variables. Various analytical models have been applied on both datasets and predicted the dengue cases. Among all the models, the LSTM model was outperformed with superior prediction capability (RMSE: 0.345 and R2:0.86) than the other models. However, other models are able to capture the trend of dengue cases but failed in predicting the outbreak periods when compared to LSTM. The findings of this study will be helpful for public health agencies and policymakers to draw appropriate control measures before the onset of dengue. The proposed LSTM model for dengue prediction can be followed by other states of India as well.
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Affiliation(s)
- Satya Ganesh Kakarla
- ENVIS Resource Partner On Climate Change and Public Health, Applied Biology Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Tarnaka, Hyderabad, 500007, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Phani Krishna Kondeti
- ENVIS Resource Partner On Climate Change and Public Health, Applied Biology Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Tarnaka, Hyderabad, 500007, Telangana, India
| | - Hari Prasad Vavilala
- ENVIS Resource Partner On Climate Change and Public Health, Applied Biology Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Tarnaka, Hyderabad, 500007, Telangana, India
| | - Gopi Sumanth Bhaskar Boddeda
- ENVIS Resource Partner On Climate Change and Public Health, Applied Biology Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Tarnaka, Hyderabad, 500007, Telangana, India
| | - Rajasekhar Mopuri
- ENVIS Resource Partner On Climate Change and Public Health, Applied Biology Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Tarnaka, Hyderabad, 500007, Telangana, India
| | - Sriram Kumaraswamy
- ENVIS Resource Partner On Climate Change and Public Health, Applied Biology Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Tarnaka, Hyderabad, 500007, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Madhusudhan Rao Kadiri
- ENVIS Resource Partner On Climate Change and Public Health, Applied Biology Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Tarnaka, Hyderabad, 500007, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Srinivasa Rao Mutheneni
- ENVIS Resource Partner On Climate Change and Public Health, Applied Biology Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Tarnaka, Hyderabad, 500007, Telangana, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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4
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Roy SK, Goswami BK, Bhattacharjee S. Genetic characterization of dengue virus from patients presenting multi-serotypic infections in the Northern West Bengal, India. Virus Genes 2023; 59:45-54. [PMID: 36327057 PMCID: PMC9630820 DOI: 10.1007/s11262-022-01950-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 10/22/2022] [Indexed: 11/06/2022]
Abstract
Northern West Bengal, popularly known as North Bengal, is a dengue-endemic area, which has been severely affected by Dengue in the past few years resulting in massive hospitalizations and deaths. Genetic characterization of the circulating endemic dengue virus (DENV) serotypes is of paramount importance for the epidemiological understanding of the infection and subsequent vaccine development. The present study was conceived to characterize circulating dengue serotypes and to undertake phylogenetic study. EDTA blood samples of all (N = 83) NS1-positive cases of patients with acute febrile illness referred to different health care facilities were collected and processed for RNA isolation followed by the complementary DNA (cDNA) preparation. Serotype determination of dengue infection was done using conventional PCR by targeting the viral C-prM region. Phylogenetic tree was constructed by implementing the Maximum likelihood method. Out of 83 blood samples 17 were detected to be positive for the presence of dengue viral RNA. DENV3 was found to be the predominant serotype in the single-infection cases; however, we have detected multi-serotypic co-infections throughout the study. Joint pain was found to be the most valuable symptom for the prognosis of dengue. Sequence analyses suggested that both DENV1- and DENV3-circulating genotypes are in the genotype III group and remain closely related to the Indian clade. To the best of our knowledge, this is the first report on the genetic characterization of circulating DENVs in North Bengal, which may contribute to the study of dengue epidemic and pathogenesis.
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Affiliation(s)
- Sudipta Kumar Roy
- Cell and Molecular Biology Laboratory, Department of Zoology, University of North Bengal, Raja Rammohunpur, P.O. North Bengal University, District: Darjeeling, Siliguri, West Bengal 734 013 India
| | - Bidyut Krishna Goswami
- Department of Pathology, North Bengal Medical College and Hospital, P.O. Sushrutanagar, Darjeeling, Siliguri, West Bengal 734012 India
| | - Soumen Bhattacharjee
- Cell and Molecular Biology Laboratory, Department of Zoology, University of North Bengal, Raja Rammohunpur, P.O. North Bengal University, District: Darjeeling, Siliguri, West Bengal 734 013 India
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5
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Racherla RG, Katari SK, Mohan A, Amineni U, Badur M, Chaudhury A, Nagaraja M, Kodavala S, Kante M, Kalawat U. Molecular Characterization and Identification of Potential Inhibitors for 'E' Protein of Dengue Virus. Viruses 2022; 14:v14050940. [PMID: 35632682 PMCID: PMC9143040 DOI: 10.3390/v14050940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/14/2022] [Accepted: 04/26/2022] [Indexed: 11/16/2022] Open
Abstract
Dengue is an arthropod-borne acute febrile illness caused by Dengue Virus (DENV), a member of Flaviviridae. Severity of the infection ranges from mild self-limiting illness to severe life-threatening hemorrhagic fever (DHF) and dengue shock syndrome (DSS). To date, there is no specific antiviral therapy established to treat the infection. The current study reports the epidemiology of DENV infections and potential inhibitors of DENV 'E' protein. Among the various serotypes, DENV-2 serotype was observed more frequently, followed by DENV-4, DENV-1, and DENV-3. New variants of existing genotypes were observed in DENV-1, 2, and 4 serotypes. Predominantly, the severe form of dengue was attributable to DENV-2 infections, and the incidence was more common in males and pediatric populations. Both the incidence and the disease severity were more common among the residents of non-urban environments. Due to the predominantly self-limiting nature of primary dengue infection and folk medicine practices of non-urban populations, we observed a greater number of secondary dengue cases than primary dengue cases. Hemorrhagic manifestations were more in secondary dengue in particularly in the pediatric group. Through different computational methods, ligands RGBLD1, RGBLD2, RGBLD3, and RGBLD4 are proposed as potential inhibitors in silico against DENV-1, -2, -3, and -4 serotypes.
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Affiliation(s)
- Rishi Gowtham Racherla
- Department of Clinical Virology, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India; (R.G.R.); (M.N.); (M.K.)
| | - Sudheer Kumar Katari
- Department of Bioinformatics, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India; (S.K.K.); (U.A.)
| | - Alladi Mohan
- Department of Medicine, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India;
| | - Umamaheswari Amineni
- Department of Bioinformatics, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India; (S.K.K.); (U.A.)
| | - Manohar Badur
- Department of Pediatrics, Sri Venkateswara Ramnarain Ruia Government General Hospital (SVRRGGH), Tirupati 517507, Andhra Pradesh, India;
| | - Abhijit Chaudhury
- Department of Microbiology, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India;
| | - Mudhigeti Nagaraja
- Department of Clinical Virology, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India; (R.G.R.); (M.N.); (M.K.)
| | - Sireesha Kodavala
- Department of Biotechnology, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India;
| | - Meenakshi Kante
- Department of Clinical Virology, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India; (R.G.R.); (M.N.); (M.K.)
| | - Usha Kalawat
- Department of Clinical Virology, Sri Venkateswara Institute of Medical Sciences (SVIMS), Tirupati 517507, Andhra Pradesh, India; (R.G.R.); (M.N.); (M.K.)
- Correspondence:
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6
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Bhattacharjee D, Mukherjee K, Sarkar R, Baske U, Manna A, Das O. Molecular characterization of dengue viruses during an outbreak in Kolkata: A hospital-based study. MEDICAL JOURNAL OF DR. D.Y. PATIL VIDYAPEETH 2022. [DOI: 10.4103/mjdrdypu.mjdrdypu_119_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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7
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OUP accepted manuscript. Trans R Soc Trop Med Hyg 2022; 116:900-909. [DOI: 10.1093/trstmh/trac001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 12/11/2021] [Accepted: 01/09/2022] [Indexed: 11/13/2022] Open
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Pathak B, Chakravarty A, Krishnan A. High viral load positively correlates with thrombocytopenia and elevated haematocrit in dengue infected paediatric patients. J Infect Public Health 2021; 14:1701-1707. [PMID: 34655984 DOI: 10.1016/j.jiph.2021.10.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/27/2021] [Accepted: 10/03/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Dengue fever is one of the major viral diseases worldwide transmitted by mosquitoes. Depending on the severity of disease it can range from mild fever to severe fatal cases. Rapid decline of platelet levels is one of indicators of clinical worsening. The role of viral factors in dengue pathogenesis and correlation with clinical and laboratory parameters remain unclear. METHODS Between September 2017 to December 2018, 102 dengue confirmed paediatric cases were analysed for various viral and host parameters. Based on symptoms, they were classified into dengue without warning signs (DOS), dengue with warning signs (DWS) and severe dengue (SD) as per 2009 WHO classification. Quantitative analysis of NS1, IgM and IgG in were done by ELISA. IgM/IgG ratio revealed primary or secondary dengue infection. Serotyping of virus in serum was done by nested multiplex RT-PCR. Viral load (VL) was determined by quantitative real time polymerase chain reaction. Association between VL and NS1 in patient sera with clinical and laboratory parameters was statistically analysed. RESULTS It was found that disease severity (as per 2009 WHO classification) significantly associated with secondary dengue infection. DENV3 was found to be the only serotype detected. The present study reports neither NS1 nor VL significantly associated with disease severity or type of infection (primary or secondary). However, VL positively correlated with haematocrit (p < 0.05). Viral load above 106 copies/mL was found in 61% of patients. Further, high viral load (>106 copies/mL) negatively correlated with platelet levels (p < 0.05). CONCLUSION Thus, viral load could be an important predictive parameter in dengue related severe symptoms like thrombocytopenia and elevated hematocrit when it goes above a certain threshold (>106 copies/ mL).
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Affiliation(s)
- Bharti Pathak
- Department of Molecular Medicine, School of Interdisciplinary Sciences & Technology, Jamia Hamdard, New Delhi 110062, India
| | - Aparna Chakravarty
- Department of Paediatrics, Hamdard Institute of Medical Sciences and Research, Jamia Hamdard, New Delhi, India
| | - Anuja Krishnan
- Department of Molecular Medicine, School of Interdisciplinary Sciences & Technology, Jamia Hamdard, New Delhi 110062, India.
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9
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Detection of dengue virus serotypes by single-tube multiplex RT-PCR and multiplex real-time PCR assay. Med J Armed Forces India 2021; 78:333-338. [DOI: 10.1016/j.mjafi.2021.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 09/05/2021] [Indexed: 11/23/2022] Open
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10
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Nonyong P, Ekalaksananan T, Phanthanawiboon S, Aromseree S, Phadungsombat J, Nakayama EE, Shioda T, Sawaswong V, Payungporn S, Thaewnongiew K, Overgaard HJ, Bangs MJ, Alexander N, Pientong C. Dengue virus in humans and mosquitoes and their molecular characteristics in northeastern Thailand 2016-2018. PLoS One 2021; 16:e0257460. [PMID: 34520486 PMCID: PMC8439490 DOI: 10.1371/journal.pone.0257460] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 09/01/2021] [Indexed: 12/24/2022] Open
Abstract
Dengue is hyperendemic in most Southeast Asian countries including Thailand, where all four dengue virus serotypes (DENV-1 to -4) have circulated over different periods and regions. Despite dengue cases being annually reported in all regions of Thailand, there is limited data on the relationship of epidemic DENV infection between humans and mosquitoes, and about the dynamics of DENV during outbreaks in the northeastern region. The present study was conducted in this region to investigate the molecular epidemiology of DENV and explore the relationships of DENV infection in humans and in mosquitoes during 2016–2018. A total of 292 dengue suspected patients from 11 hospitals and 902 individual mosquitoes (at patient’s houses and neighboring houses) were recruited and investigated for DENV serotypes infection using PCR. A total of 103 patients and 149 individual mosquitoes were DENV -positive. Among patients, the predominant DENV serotypes in 2016 and 2018 were DENV-4 (74%) and DENV-3 (53%) respectively, whereas in 2017, DENV-1, -3 and -4 had similar prevalence (38%). Additionally, only 19% of DENV infections in humans and mosquitoes at surrounding houses were serotypically matched, while 81% of infections were serotypically mismatched, suggesting that mosquitoes outside the residence may be an important factor of endemic dengue transmission. Phylogenetic analyses based on envelope gene sequences showed the genotype I of both DENV-1 and DENV-4, and co-circulation of the Cosmopolitan and Asian I genotypes of DENV-2. These strains were closely related to concurrent strains in other parts of Thailand and also similar to strains in previous epidemiological profiles in Thailand and elsewhere in Southeast Asia. These findings highlight genomic data of DENV in this region and suggest that people’s movement in urban environments may result in mosquitoes far away from the residential area being key determinants of DENV epidemic dynamics.
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Affiliation(s)
- Patcharaporn Nonyong
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Tipaya Ekalaksananan
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,HPV & EBV and Carcinogenesis Research Group, Khon Kaen University, Khon Kaen, Thailand
| | | | - Sirinart Aromseree
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,HPV & EBV and Carcinogenesis Research Group, Khon Kaen University, Khon Kaen, Thailand
| | - Juthamas Phadungsombat
- Mahidol-Osaka Center for Infectious Diseases, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Emi E Nakayama
- Mahidol-Osaka Center for Infectious Diseases, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.,Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Tatsuo Shioda
- Mahidol-Osaka Center for Infectious Diseases, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.,Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Vorthon Sawaswong
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, Thailand.,Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Sunchai Payungporn
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Kesorn Thaewnongiew
- Department of Disease Control, Office of Disease Prevention and Control, Region 7 Khon Kaen, Ministry of Public Health, Khon Kaen, Thailand
| | - Hans J Overgaard
- Faculty of Science and Technology, Norwegian University of Life Sciences, Ås, Norway
| | - Michael J Bangs
- Public Health & Malaria Control, PT Freeport Indonesia/International SOS, Kuala Kencana, Papua, Indonesia.,Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, Thailand
| | - Neal Alexander
- MRC Tropical Epidemiology Group, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Chamsai Pientong
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,HPV & EBV and Carcinogenesis Research Group, Khon Kaen University, Khon Kaen, Thailand
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Sirisena P, Mahilkar S, Sharma C, Jain J, Sunil S. Concurrent dengue infections: Epidemiology & clinical implications. Indian J Med Res 2021; 154:669-679. [PMID: 35532585 PMCID: PMC9210535 DOI: 10.4103/ijmr.ijmr_1219_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Indexed: 01/09/2023] Open
Abstract
Multiple dengue virus (DENV) serotypes circulating in a geographical area most often lead to simultaneous infection of two or more serotypes in a single individual. The occurrence of such concurrent infections ranges from 2.5 to 30 per cent, reaching as high as 40-50 per cent in certain dengue hyper-endemic areas. Concurrent dengue manifests itself differently than mono-infected patients, and it becomes even more important to understand the effects of co-infecting serotypes in concurrent infections to ascertain the clinical outcomes of the disease progression and transmission. In addition, there have also been reports of concurrent DENV infections in the presence of other arboviral infections. In this review, we provide a comprehensive breakdown of concurrent dengue infections globally. Furthermore, this review also touches upon the clinical presentations during those concurrent infections categorized as mild or severe forms of disease presentation. Another aspect of this review was aimed at providing insight into the concurrent dengue incidences in the presence of other arboviruses.
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Affiliation(s)
- P.D.N.N. Sirisena
- ImmunifyMe Healthcare Technologies Pvt. Ltd., Altrade Business Centre, Gurugram, Haryana, India
| | - Shakuntala Mahilkar
- Vector Borne Diseases Group, International Centre for Genetic Engineering & Biotechnology, New Delhi, India
| | - Chetan Sharma
- Vector Borne Diseases Group, International Centre for Genetic Engineering & Biotechnology, New Delhi, India
| | - Jaspreet Jain
- Human Retrovirology Laboratory, Montreal Clinical Research Institute (IRCM), Montreal, Quebec H2W 1R7, Canada
| | - Sujatha Sunil
- Vector Borne Diseases Group, International Centre for Genetic Engineering & Biotechnology, New Delhi, India
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12
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Rai P, Kille S, Kotian A, Kumar BK, Deekshit VK, Ramakrishna MS, Karunasagar I, Karunasagar I. Molecular investigation of the dengue outbreak in Karnataka, South India, reveals co-circulation of all four dengue virus serotypes. INFECTION GENETICS AND EVOLUTION 2021; 92:104880. [PMID: 33905893 DOI: 10.1016/j.meegid.2021.104880] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 11/20/2022]
Abstract
The growing incidence of dengue outbreaks in the state of Karnataka prompted us to study the circulating dengue virus (DENV) and their proportion among the suspected cases of dengue patients during the disease outbreak at Mysuru district of Southern India. The presence of the DENV in a patient's serum sample was identified by RT-PCR using previously published primer pairs targeting CprM gene. DENV serotyping was carried out by semi-nested multiplex PCR using serotype-specific primers and nucleotide sequencing. Three hundred fifty-five samples of serum from suspected dengue cases were collected, and 203 samples (57.18%) were found positives. In 2016, DENV-4 (97.87%) was found to be the most dominant DENV serotype either alone or as co-infection, followed by DENV-2 (8.51%) and DENV-3 (4.25%). In 47 positive cases, co-infection with more than one serotype was detected in 4 cases (8.51%). The analysis of the dengue cases in 2017, DENV-4 was dominating serotype (33.97%), followed by the emergence of DENV-2 (32.05%), DENV-3 (25.64%), and DENV-1 (25.00%). Our study also reports the circulation of all four DENV serotypes in the Mysuru district of Southern India, with concurrent infections rate of 16.66% in 2017. The present study provides information regarding the genetic variation among the circulating DENV serotype in an Indian state of Karnataka. The need for the studying genetic diversity of DENV will be useful during the continuous monitoring for disease burden as well as the development of appropriate prophylactic measures to control the spread of dengue infection.
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Affiliation(s)
- Praveen Rai
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Infectious Diseases, Deralakatte, Mangaluru 575018, Karnataka, India.
| | - Sonam Kille
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Infectious Diseases, Deralakatte, Mangaluru 575018, Karnataka, India
| | - Akshatha Kotian
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Infectious Diseases, Deralakatte, Mangaluru 575018, Karnataka, India
| | - Ballamoole Krishna Kumar
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Infectious Diseases, Deralakatte, Mangaluru 575018, Karnataka, India
| | - Vijaya Kumar Deekshit
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Infectious Diseases, Deralakatte, Mangaluru 575018, Karnataka, India
| | - Mysore Shivalingappa Ramakrishna
- 306/A, 3(rd) Stage Main, 9(th) Cross A-1BLOCK Vijay Nagar, 3(rd) Stage, Behind Clear medi Radiant Hospital, Mysuru 570030, Karnataka, India
| | - Indrani Karunasagar
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Infectious Diseases, Deralakatte, Mangaluru 575018, Karnataka, India
| | - Iddya Karunasagar
- Nitte (Deemed to be University), Nitte University Centre for Science Education and Research (NUCSER), Division of Infectious Diseases, Deralakatte, Mangaluru 575018, Karnataka, India
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Dungdung R, Bayal M, Valliyott L, Unniyampurath U, Nair SS, Pilankatta R. A slow, efficient and safe nanoplatform of tailored ZnS QD-mycophenolic acid conjugates for in vitro drug delivery against dengue virus 2 genome replication. NANOSCALE ADVANCES 2020; 2:5777-5789. [PMID: 36133864 PMCID: PMC9418522 DOI: 10.1039/d0na00725k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 10/05/2020] [Indexed: 06/16/2023]
Abstract
Dengue is a major health concern causing significant mortality, morbidity and economic loss. The development of anti-dengue viral drugs is challenging due to high toxicity, as well as off-target/side effects. We engineered size tuned ZnS QDs as a platform for the efficient delivery of mycophenolic acid (MPA) against dengue virus serotype 2 (DENV2) to evaluate the drug efficacy and toxicity using the DENV2 sub-genomic replicon system in BHK21 cells. The results indicate that the Selectivity Index 50 (SI50) of the ZnS QD-MPA conjugate was two orders higher than that of free MPA with lower cytotoxicity. The effect is attributed to the sustained release of MPA from ZnS QD-MPA. The conjugated MPA caused significant inhibition of the virus at the level of replication and viral protein translation. The study underpins the efficiency of the ZnS QD for the delivery of antiviral drugs against DENV2 with negligible toxicity and side effects.
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Affiliation(s)
- Ranjeet Dungdung
- Department of Biochemistry and Molecular Biology, School of Biological Sciences, Krishna Block, Central University of Kerala Periya Kasargod Kerala India 671316
| | - Manikanta Bayal
- Department of Physics, School of Physical Sciences, Narmada Block, Central University of Kerala Periya Kasargod Kerala India 671316
| | - Lathika Valliyott
- Department of Biochemistry and Molecular Biology, School of Biological Sciences, Krishna Block, Central University of Kerala Periya Kasargod Kerala India 671316
| | | | - Swapna S Nair
- Department of Physics, School of Physical Sciences, Narmada Block, Central University of Kerala Periya Kasargod Kerala India 671316
| | - Rajendra Pilankatta
- Department of Biochemistry and Molecular Biology, School of Biological Sciences, Krishna Block, Central University of Kerala Periya Kasargod Kerala India 671316
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14
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Islam A, Abdullah M, Tazeen A, Naqvi IH, Kazim SN, Ahmed A, Alamery SF, Malik A, Parveen S. Circulation of dengue virus serotypes in hyperendemic region of New Delhi, India during 2011-2017. J Infect Public Health 2020; 13:1912-1919. [PMID: 33148496 DOI: 10.1016/j.jiph.2020.10.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 09/30/2020] [Accepted: 10/08/2020] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Dengue fever has become a hampering menace in New Delhi India, since the disease has become hyperendemic, due to circulation of multiple serotypes of dengue virus (DENV). This hyperendemicity poses a greater risk of secondary infections in human health system. This is a major issue which leads to apprehension amongst the researchers and health organizations and thus requires regular epidemiological surveillance. METHODS We analyzed the prevalence and serotypic distribution of dengue fever cases reported from the Southern part of New Delhi during continued surveillance from 2011 to 2017. The blood samples for the investigation were obtained from the patients suspected with dengue fever attending the OPD at a local Health Centre. The data for 2011-2016 was already published from our laboratory. The samples collected during 2017 were serotyped and characterized in the present study. RESULTS A total of 565 samples (59%) were positive for DENV of 958 samples tested by RT-PCR during 7 years (2011-2017). Our study has shown that most infections were caused by DENV-2 during 2011-2015. The data has shown occurrence of all four serotypes of DENV during 2015 and predominance of DENV-3 in 2016 and 2017. Further, predominant combination of DENV-1 and DENV-2 was found in most of the co-infections. To the best of our knowledge this is the first study showing the epidemiological trend of dengue fever in reference to the circulating DENV serotypes and co-infections from a hyperendemic region of New Delhi during 2011-2017. CONCLUSIONS This hyperendemic pattern of DENV and instantaneous shift in circulation of its serotypes is likely pose a greater risk of secondary infections. Inclusion of comprehensive community and hospital surveillance of dengue fever will assist in formulation and implementation of effective control measures.
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Affiliation(s)
- Arshi Islam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Mohd Abdullah
- Dr. M.A. Ansari Health Centre, Jamia Millia Islamia, New Delhi, India
| | - Ayesha Tazeen
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Irshad H Naqvi
- Dr. M.A. Ansari Health Centre, Jamia Millia Islamia, New Delhi, India
| | - Syed Naqui Kazim
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Anwar Ahmed
- Centre of Excellence in Biotechnology Research, College of Science, King Saud University, Riyadh, Saudi Arabia; Protein Research Chair, Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Salman Freeh Alamery
- Centre of Excellence in Biotechnology Research, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ajamaluddin Malik
- Protein Research Chair, Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Shama Parveen
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India.
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15
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Soni M, Khan SA, Bhattacharjee CK, Dutta P. Experimental study of dengue virus infection in Aedes aegypti and Aedes albopictus: A comparative analysis on susceptibility, virus transmission and reproductive success. J Invertebr Pathol 2020; 175:107445. [PMID: 32712268 DOI: 10.1016/j.jip.2020.107445] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 07/17/2020] [Accepted: 07/20/2020] [Indexed: 02/07/2023]
Abstract
Epidemiology of dengue fever has substantially changed over the years with respect to prevalent strains, affected geographical locations and severity of disease. Mosquito vectors show variable response in terms of susceptibility to four different serotypes of dengue virus. Although studies have postulated that, the vectors Ae. aegypti and Ae. albopictus are crucial for transmission of dengue virus, comparative efficacy of these species for viral transmission and tolerance is still enigmatic. In this study, these two vectors were infected orally with four serotypes of the dengue virus viz. DENV-1 to DENV-4 and their co-infection. It was observed that Ae. aegypti harbors multiple serotype infections more efficiently than Ae. albopictus. We suggest that transovarial transmission is of low importance in the epidemiology of the virus due to low infection rates in the filial generation, and also that reduced fecundity and fertility in both vectors after dengue virus infection affect the ecology of the pathogen.
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Affiliation(s)
- Monika Soni
- Assam Don Bosco University, Kamrup, Assam 782 402, India.
| | - Siraj A Khan
- ICMR-Regional Medical Research Centre, NE Region, Dibrugarh, Assam 786001, India.
| | | | - Prafulla Dutta
- ICMR-Regional Medical Research Centre, NE Region, Dibrugarh, Assam 786001, India
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16
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Murugesan A, Aridoss D, Senthilkumar S, Sivathanu L, Sekar R, Shankar EM, Manickan E. Molecular diversity of dengue virus serotypes 1-4 during an outbreak of acute dengue virus infection in Theni, India. Indian J Med Microbiol 2020; 38:401-408. [PMID: 33154254 DOI: 10.4103/ijmm.ijmm_20_89] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Dengue fever (DF) is caused by an arthropod-borne dengue virus (DENV), has four serotypes and several genotypes. Although having clinical and epidemiological significance, the information on the circulating serotypes/genotypes is scarce in India. Materials and Methods Blood specimens were collected from the patients suspected of DF and they are tested for DENV NS1 antigen and DENV IgM by ELISA. Antigen-positive samples were further serotyped by reverse transcriptase polymerase chain reaction. Representative samples from each serotype were sequenced to identify the genotypes. Results All the four DENV serotypes were detected with the pre-dominance of DENV-1 (n = 49; 41.9%). Cases with multiple DENV serotype infections were also identified. Genotyping showed that DENV-1 belonging to genotype I, DENV-2 cosmopolitan (IV), DENV-3 genotype III and DENV-4 genotype I were active in the circulation during the outbreak in 2017. Conclusion Our study documents the molecular characteristics of DENV circulating in our geographical locality. The detection of heterologous DENV serotypes highlights the importance of regular molecular monitoring for the early recognition of any switch in pre-dominant serotype.
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Affiliation(s)
- Amudhan Murugesan
- Department of Microbiology, Government Theni Medical College, Theni; Department of Microbiology, Dr ALM PG IBMS, University of Madras, Chennai; Department of Microbiology, Virus Research and Diagnostic Laboratory, Government Theni Medical College, Theni, Tamil Nadu, India
| | - Dhanasezhian Aridoss
- Department of Microbiology, Government Theni Medical College, Theni; Department of Microbiology, Dr ALM PG IBMS, University of Madras, Chennai; Department of Microbiology, Virus Research and Diagnostic Laboratory, Government Theni Medical College, Theni, Tamil Nadu, India
| | - Swarna Senthilkumar
- Department of Microbiology; Department of Microbiology, Virus Research and Diagnostic Laboratory, Government Theni Medical College, Theni, Tamil Nadu, India
| | - Lallitha Sivathanu
- Department of Microbiology; Department of Microbiology, Virus Research and Diagnostic Laboratory, Government Theni Medical College, Theni, Tamil Nadu, India
| | - Ramalingam Sekar
- Department of Microbiology; Department of Microbiology, Virus Research and Diagnostic Laboratory, Government Theni Medical College, Theni, Tamil Nadu, India
| | - Esaki M Shankar
- Infection Biology, Department of Life Sciences, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, India
| | - Elanchezhiyan Manickan
- Department of Microbiology, Dr ALM PG IBMS, University of Madras, Chennai, Tamil Nadu, India
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17
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Mendes CI, Lizarazo E, Machado MP, Silva DN, Tami A, Ramirez M, Couto N, Rossen JWA, Carriço JA. DEN-IM: dengue virus genotyping from amplicon and shotgun metagenomic sequencing. Microb Genom 2020; 6:e000328. [PMID: 32134380 PMCID: PMC7200064 DOI: 10.1099/mgen.0.000328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/23/2019] [Indexed: 11/18/2022] Open
Abstract
Dengue virus (DENV) represents a public health threat and economic burden in affected countries. The availability of genomic data is key to understanding viral evolution and dynamics, supporting improved control strategies. Currently, the use of high-throughput sequencing (HTS) technologies, which can be applied both directly to patient samples (shotgun metagenomics) and to PCR-amplified viral sequences (amplicon sequencing), is potentially the most informative approach to monitor viral dissemination and genetic diversity by providing, in a single methodological step, identification and characterization of the whole viral genome at the nucleotide level. Despite many advantages, these technologies require bioinformatics expertise and appropriate infrastructure for the analysis and interpretation of the resulting data. In addition, the many software solutions available can hamper the reproducibility and comparison of results. Here we present DEN-IM, a one-stop, user-friendly, containerized and reproducible workflow for the analysis of DENV short-read sequencing data from both amplicon and shotgun metagenomics approaches. It is able to infer the DENV coding sequence (CDS), identify the serotype and genotype, and generate a phylogenetic tree. It can easily be run on any UNIX-like system, from local machines to high-performance computing clusters, performing a comprehensive analysis without the requirement for extensive bioinformatics expertise. Using DEN-IM, we successfully analysed two types of DENV datasets. The first comprised 25 shotgun metagenomic sequencing samples from patients with variable serotypes and genotypes, including an in vitro spiked sample containing the four known serotypes. The second consisted of 106 paired-end and 76 single-end amplicon sequences of DENV 3 genotype III and DENV 1 genotype I, respectively, where DEN-IM allowed detection of the intra-genotype diversity. The DEN-IM workflow, parameters and execution configuration files, and documentation are freely available at https://github.com/B-UMMI/DEN-IM).
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Affiliation(s)
- Catarina I. Mendes
- Instituto de Microbiologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, The Netherlands
| | - Erley Lizarazo
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, The Netherlands
| | - Miguel P. Machado
- Instituto de Microbiologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Diogo N. Silva
- Instituto de Microbiologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Adriana Tami
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, The Netherlands
| | - Mário Ramirez
- Instituto de Microbiologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Natacha Couto
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, The Netherlands
| | - John W. A. Rossen
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, The Netherlands
| | - João A. Carriço
- Instituto de Microbiologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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Alanine Substitution Inactivates Cross-Reacting Epitopes in Dengue Virus Recombinant Envelope Proteins. Viruses 2020; 12:v12020208. [PMID: 32069839 PMCID: PMC7077257 DOI: 10.3390/v12020208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/28/2020] [Accepted: 02/07/2020] [Indexed: 01/06/2023] Open
Abstract
The expansion of the habitat of mosquitoes belonging to the Aedes genus puts nearly half of the world's population at risk of contracting dengue fever, and a significant fraction will develop its serious hemorrhagic complication, which can be fatal if not diagnosed properly and treated in a timely fashion. Although several diagnostic methods have been approved for dengue diagnostics, their applicability is limited in rural areas of developing countries by sample preparation costs and methodological requirements, as well as cross-reactivity among the different serotypes of the Dengue virus and other flavivirus, such as the Zika virus. For these reasons, it is necessary to generate more specific antigens to improve serological methods that could be cheaper and used in field operations. Here, we describe a strategy for the inactivation of cross-reacting epitopes on the surface of the Dengue virus envelope protein through the synthetic generation of recombinant peptide sequences, where key amino acid residues from Dengue virus serotype 1 (DENV-1) and 2 (DENV-2) are substituted by alanine residues. The proteins thus generated are recognized by 88% of sera from Dengue NS1+ patients and show improved serotype specificity because they do not react with the antibodies present in seroconverted, PCR-serotyped DEN-4 infected patients.
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19
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Gahlaut SK, Savargaonkar D, Sharan C, Yadav S, Mishra P, Singh JP. SERS Platform for Dengue Diagnosis from Clinical Samples Employing a Hand Held Raman Spectrometer. Anal Chem 2020; 92:2527-2534. [PMID: 31909593 DOI: 10.1021/acs.analchem.9b04129] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dengue is a serious global health concern especially in tropical and subtropical countries. About 2.5 billion of the world's population is at risk for dengue infection. Early diagnosis is the key to prevent the deterioration of health of the patient to severe illness. Laboratory diagnosis of dengue is essential for providing appropriate supportive treatment to dengue patients with febrile illness, which is difficult to diagnose clinically. Here, we demonstrate surface enhanced Raman scattering (SERS) based diagnosis of dengue virus in clinical blood samples collected from total of 102 subjects. All of the samples were well characterized by conventional NS1 antigen and IgM antibody ELISA kits. The silver nanorods array fabricated by glancing angle deposition technique were employed as SERS substrates. A small amount of patient blood serum (5 μL) was taken for analysis and the report was prepared within a minute. SERS spectra of pure NS1 protein as well as spiked in serum was also recorded separately. Principal component analysis (PCA) was employed as the statistical tool to differentiate dengue positive, dengue negative, and healthy subjects on the basis of their respective SERS spectra. This method provides a sensitive, rapid, and field deployable diagnosis of dengue at the early stage (within 5 days of the onset of symptoms).
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Affiliation(s)
- S K Gahlaut
- Department of Physics , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - D Savargaonkar
- ICMR-National Institute of Malaria Research , Dwarka , New Delhi 110077 , India
| | - C Sharan
- Department of Physics , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - Sarjana Yadav
- Department of Physics , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - P Mishra
- Department of Biochemical Engineering and Biotechnology , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - J P Singh
- Department of Physics , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
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20
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Sharmila PF, Vanathy K, Rajamani B, Kaliaperumal V, Dhodapkar R. Emergence of dengue virus 4 as the predominant serotype during the outbreak of 2017 in South India. Indian J Med Microbiol 2019; 37:393-400. [PMID: 32003339 DOI: 10.4103/ijmm.ijmm_19_338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Context Dengue virus (DENV) causes acute febrile illness in tropical and subtropical countries. In India there is a steady increase in incidence since 1950s which could be attributed to emergence of new serotype or lineage\clade shifts in circulating DENV. Aims We aimed to perform molecular characterisation and phylogenetic analysis on samples from the recent outbreak (August-October 2017). Settings and Design Retrospective epidemiological analysis of dengue outbreak. Subjects and Methods Samples positive for non-steroidal 1 antigen by enzyme-linked immunosorbent assay (n = 147) were included. The study was approved by our institute ethics committee (JIP/IEC/2018/496). Five hundred and eleven base pair of capsid and pre-membrane encoding genes (CprM) region was amplified using Lanciotti primers, followed by second round of polymerase chain reaction using serotype specific primers. Samples which were positive by second round (n = 68) were sequenced and genotyped using Basic Local Alignment Search Tool analysis and phylogenetic tree was constructed by MEGA7 software. Results Phylogenetic analysis of CprM sequences identified all 4 serotypes in circulation during this outbreak. We observed both single (n = 50) and concurrent infections (n = 18), with DENV4 as the major contributor (64%). Within Genotype I of DENV4 we observed a distinct new clade (Clade E) which was 2.6% ± 0.9%-5.5% ± 1.1% divergent from the other clades. Among the concurrent infection, DENV 4 and DENV 2 combination was observed to form the majority (77.8%). Conclusions Overall this study documents the emergence of DENV4 as the major serotype in circulation, replacing DENV1, 2 and 3 which had been previously reported from Tamil Nadu and Puducherry. This substantiates the need for continuous monitoring in endemic countries like India, where such data may impact the formulation of vaccine policy for dengue.
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Affiliation(s)
- P Ferdinamarie Sharmila
- Department of Microbiology, Regional Viral Research and Diagnostic Laboratory, JIPMER, Puducherry, India
| | - K Vanathy
- Department of Microbiology, MGMCRI, Sri Balaji Vidyapeeth, Puducherry, India
| | - Barathidasan Rajamani
- Department of Microbiology, Regional Viral Research and Diagnostic Laboratory, JIPMER, Puducherry, India
| | - Venkatesh Kaliaperumal
- Department of Microbiology, Regional Viral Research and Diagnostic Laboratory, JIPMER, Puducherry, India
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21
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Agarwal A, Gupta S, Chincholkar T, Singh V, Umare IK, Ansari K, Paliya S, Yadav AK, Chowdhary R, Purwar S, Biswas D. Co-circulation of dengue virus serotypes in Central India: Evidence of prolonged viremia in DENV-2. INFECTION GENETICS AND EVOLUTION 2019; 70:72-79. [DOI: 10.1016/j.meegid.2019.02.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 02/15/2019] [Accepted: 02/20/2019] [Indexed: 01/01/2023]
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22
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Racherla RG, Pamireddy ML, Mohan A, Mudhigeti N, Mahalakshmi PA, Nallapireddy U, Kalawat U. Co-circulation of four dengue serotypes at South Eastern Andhra Pradesh, India: A prospective study. Indian J Med Microbiol 2018; 36:236-240. [PMID: 30084417 DOI: 10.4103/ijmm.ijmm_18_109] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background Dengue is one of the most important mosquito-borne viral diseases in the world. The emergence and spread of four dengue viruses (DENVs) (serotypes) represent a global pandemic. The four distinct serotypes are, namely, DENV-1, DENV-2, DENV-3 and DENV-4. Very few dengue serotyping studies have been reported from Andhra Pradesh. In this context, the present study focuses on the circulating serotypes of dengue in South-Eastern Andhra Pradesh. Methodology Study was done at Sri Venkateswara Institute of Medical Sciences, a teaching hospital in Tirupati, Andhra Pradesh. Acute phase dengue serum samples were collected and tested for NS1 antigen and anti-human IgM antibodies by enzyme-linked immunosorbent assay (ELISA). NS1-positive samples were further serotyped by reverse transcriptase real-time polymerase chain reaction (rRT-PCR). Results A total of 398 serum samples were received from clinically suspected dengue fever cases. Of these, 150 (37.7%) samples were positive for NS1 and/or IgM ELISA. The 96 NS1 antigen-positive samples were further processed for serotyping, of which 36 were negative by rRT-PCR. DENV-2 (41%) was the predominant serotype, followed by DENV-4 (37%), DENV-3 (12%) and DENV-1 (10%) in descending order. Conclusion This study reports the all four dengue serotypes' co-circulation. This is the first report from South Eastern Andhra Pradesh. Amongst four, DENV-2 was predominant followed by DENV-4. The information of predominant serotypes can guide in forecasting dengue outbreaks and improving control measures of vectors thus may be helpful in the prevention of outbreaks.
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Affiliation(s)
- Rishi Gowtham Racherla
- Department of Microbiology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Madhavi Latha Pamireddy
- Department of Microbiology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Alladi Mohan
- Department of Medicine, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Nagaraja Mudhigeti
- Department of Microbiology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | | | - Umapathi Nallapireddy
- Department of Microbiology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Usha Kalawat
- Department of Microbiology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
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23
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An epidemiological study of dengue and its coinfections in Delhi. Int J Infect Dis 2018; 74:41-46. [DOI: 10.1016/j.ijid.2018.06.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 06/23/2018] [Accepted: 06/26/2018] [Indexed: 11/17/2022] Open
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Sukla S, Ghosh A, Saha R, De A, Adhya S, Biswas S. In-depth molecular analysis of a small cohort of human and Aedes mosquito (adults and larvae) samples from Kolkata revealed absence of Zika but high prevalence of dengue virus. J Med Microbiol 2018; 67:1109-1119. [PMID: 29897327 DOI: 10.1099/jmm.0.000769] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Soumi Sukla
- 1CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700032, West Bengal, India
| | - Anisa Ghosh
- 1CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700032, West Bengal, India
| | - Rajdeep Saha
- 2Department of Microbiology, Calcutta National Medical College and Hospital, Kolkata 700014, West Bengal, India
| | - Abhishek De
- 3Department of Dermatology, Calcutta National Medical College and Hospital, Kolkata 700014, West Bengal, India
| | - Samit Adhya
- 1CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700032, West Bengal, India
| | - Subhajit Biswas
- 1CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700032, West Bengal, India
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25
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Chan SK, Kuzuya A, Choong YS, Lim TS. DNA Switch: Toehold-Mediated DNA Isothermal Amplification for Dengue Serotyping. SLAS DISCOVERY 2018; 24:68-76. [DOI: 10.1177/2472555218791743] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The inherent ability of nucleic acids to recognize a complementary pair has gained wide popularity in DNA sensor applications. DNA molecules can be produced in bulk and easily incorporated with various nanomaterials for sensing applications. More complex designs and sophisticated DNA sensors have been reported over the years to allow DNA detection in a faster, cheaper, and more convenient manner. Here, we report a DNA sensor designed to function like a switch to turn “on” silver nanocluster (AgNC) generation in the presence of a specific DNA target. By defining the probe region sequence, we are able to tune the color of the AgNC generated in direct relation to the different targets. As a proof of concept, we used dengue RNA-dependent RNA polymerase conserved sequences from all four serotypes as targets. This method was able to distinguish each dengue serotype by generating the serotype-respective AgNCs. The DNA switch was also able to identify and amplify the correct target in a mixture of targets with good specificity. This strategy has a detection limit of between 1.5 and 2.0 µM depending on the sequence of AgNC. The DNA switch approach provides an attractive alternative for single-target or multiplex DNA detection.
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Affiliation(s)
- Soo Khim Chan
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Minden, Penang, Malaysia
| | - Akinori Kuzuya
- Department of Chemistry and Materials Engineering, Kansai University, Yamate, Suita, Osaka, Japan
| | - Yee Siew Choong
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Minden, Penang, Malaysia
| | - Theam Soon Lim
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Minden, Penang, Malaysia
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, Minden, Penang, Malaysia
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Gupta BP, Haselbeck A, Kim JH, Marks F, Saluja T. The Dengue virus in Nepal: gaps in diagnosis and surveillance. Ann Clin Microbiol Antimicrob 2018; 17:32. [PMID: 30008269 PMCID: PMC6047123 DOI: 10.1186/s12941-018-0284-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 07/09/2018] [Indexed: 01/16/2023] Open
Abstract
Background The introduction of the dengue virus (DENV) in Nepal is recent, first reports date back to 2004 from a Japanese traveller and limited information is available about DENV infection in the Nepali population. Within a decade after the first DENV detection, it is now endemic in multiple districts of Nepal with approximately 11.2 million people residing in the Terai belt being at risk of DENV infection. Sporadic cases of DENV infection have been reported every year for the past decade during the monsoon season, mainly in the Terai region. Methods Medline/Embase/Cochrane databases were reviewed for reports on the burden of dengue infection, diagnostic methods, and national surveillance. Results Four outbreaks were reported since 2004 including the diagnosis of all serotypes in 2006 and predominance of a single serotype in 2010 (DENV-1), 2013 (DENV-2), and 2016 (DENV-1). The clinical diagnoses showed a predominance of dengue fever while 4/917 (0.4%), 8/642 (1.2%) and 8/1615 (0.4%) dengue haemorrhagic fever/dengue shock syndrome cases were identified during the outbreaks in 2010, 2013 and 2016, respectively. The number of cases reported in males was significantly higher (67.4%) than in females. Disease occurrence was primarily found in the Terai region until 2010 and was increasingly detected in the Hilly region in 2016. Conclusion In Nepal currently weak diagnostic facilities, very limited research on mosquitoes vectors, and poor surveillance of dengue leading to inappropriate detection and control of DENV. We surmise that improved basic research and epidemiological training courses for local scientists and laboratory personal at national and international level will help better understand the evolution and distribution of DENV transmission and its eventual control.
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Affiliation(s)
| | | | - Jerome H Kim
- International Vaccine Institute, Seoul, Republic of Korea
| | - Florian Marks
- International Vaccine Institute, Seoul, Republic of Korea.,Department of Medicine, Cambridge University, Cambridge, UK
| | - Tarun Saluja
- International Vaccine Institute, Seoul, Republic of Korea
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Zala D, Khan V, Kakadiya M, Sanghai A, Das V. Circulation of dengue serotypes in the Union Territory of Dadra & Nagar Haveli (India). Parasite Epidemiol Control 2018; 3:e00069. [PMID: 29988334 PMCID: PMC6020105 DOI: 10.1016/j.parepi.2018.e00069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 03/13/2018] [Accepted: 04/12/2018] [Indexed: 11/20/2022] Open
Abstract
The presence of chronological infection by the multi serotype of dengue virus (DENV) is a major contributing factor for the induction of Dengue Hemorrhagic Fever (DHF) and Dengue Shock Syndrome (DSS). The results indicate that all serotype of dengue along with concurrent infection were reported from the third smallest Union Territory of India furthermore, rare serotype DENV 4, gradually spreads in new areas of India. Therefore, a need to understand the epidemiology of locally circulating serotype and accordingly the control strategy can be implemented. The study was conducted during 2014-2017 in the Union Territory of Dadra & Nagar Haveli (India).
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Ganeshkumar P, Murhekar MV, Poornima V, Saravanakumar V, Sukumaran K, Anandaselvasankar A, John D, Mehendale SM. Dengue infection in India: A systematic review and meta-analysis. PLoS Negl Trop Dis 2018; 12:e0006618. [PMID: 30011275 PMCID: PMC6078327 DOI: 10.1371/journal.pntd.0006618] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 08/06/2018] [Accepted: 06/19/2018] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Dengue is the most extensively spread mosquito-borne disease; endemic in more than 100 countries. Information about dengue disease burden, its prevalence, incidence and geographic distribution is critical in planning appropriate control measures against dengue fever. We conducted a systematic review and meta-analysis of dengue fever in India. METHODS We searched for studies published until 2017 reporting the incidence, the prevalence or case fatality of dengue in India. Our primary outcomes were (a) prevalence of laboratory confirmed dengue infection among clinically suspected patients, (b) seroprevalence in the general population and (c) case fatality ratio among laboratory confirmed dengue patients. We used binomial-normal mixed effects regression model to estimate the pooled proportion of dengue infections. Forest plots were used to display pooled estimates. The metafor package of R software was used to conduct meta-analysis. RESULTS Of the 2285 identified articles on dengue, we included 233 in the analysis wherein 180 reported prevalence of laboratory confirmed dengue infection, seven reported seroprevalence as evidenced by IgG or neutralizing antibodies against dengue and 77 reported case fatality. The overall estimate of the prevalence of laboratory confirmed dengue infection among clinically suspected patients was 38.3% (95% CI: 34.8%-41.8%). The pooled estimate of dengue seroprevalence in the general population and CFR among laboratory confirmed patients was 56.9% (95% CI: 37.5-74.4) and 2.6% (95% CI: 2-3.4) respectively. There was significant heterogeneity in reported outcomes (p-values<0.001). CONCLUSIONS Identified gaps in the understanding of dengue epidemiology in India emphasize the need to initiate community-based cohort studies representing different geographic regions to generate reliable estimates of age-specific incidence of dengue and studies to generate dengue seroprevalence data in the country.
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Affiliation(s)
| | - Manoj V. Murhekar
- Department of Epidemiology, National Institute of Epidemiology, Chennai, Tamil Nadu, India
| | - Veeraraghavadoss Poornima
- School of Public Health, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Velusamy Saravanakumar
- Department of Epidemiology, National Institute of Epidemiology, Chennai, Tamil Nadu, India
| | - Krishnendu Sukumaran
- School of Public Health, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Anandan Anandaselvasankar
- School of Public Health, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Denny John
- Campbell Collaboration, New Delhi, India
| | - Sanjay M. Mehendale
- Division of Epidemiology and Communicable Diseases, Indian Council of Medical Research, New Delhi, India
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Shrivastava S, Tiraki D, Diwan A, Lalwani SK, Modak M, Mishra AC, Arankalle VA. Co-circulation of all the four dengue virus serotypes and detection of a novel clade of DENV-4 (genotype I) virus in Pune, India during 2016 season. PLoS One 2018; 13:e0192672. [PMID: 29470509 PMCID: PMC5823370 DOI: 10.1371/journal.pone.0192672] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 01/22/2018] [Indexed: 11/19/2022] Open
Abstract
Dengue is the most common mosquito-borne viral infection in tropical and sub-tropical countries. In recent years, India has reported increased incidences of concurrent infection with multiple serotypes of dengue viruses (DENV). In the present study, we have characterized DENV circulating during a single season of 2016 in Pune, India. A total of 64 serum samples from NS1 ELISA positive dengue patients were used for PCR amplification of CprM region of the viral genome and sequencing. Phylogenetic analysis documented circulation of all the four DENV serotypes with predominance of DENV-2 (40.6%). DENV genotyping classified DENV-1 to Genotype V, DENV-2 to Genotype IV, DENV-3 to Genotype III and DENV-4 to Genotype I. Further analysis revealed emergence of a novel clade (D) of genotype I of DENV-4. Subsequent isolation of three DENV-4 viruses in cell culture followed by complete genome sequence analysis confirmed this observation. Additionally, a new genotype within serotype-4 with >6.7% sequence variation from other genotypes was identified. This first report of significant co-circulation of all the four serotypes in a single outbreak in Pune reconfirms need for molecular monitoring of DENV.
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Affiliation(s)
- Shubham Shrivastava
- Department of Communicable Diseases, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India
| | - Divya Tiraki
- Department of Communicable Diseases, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India
| | - Arundhati Diwan
- Department of Medicine, Bharati Vidyapeeth Deemed University Medical College, Pune, Maharashtra, India
| | - Sanjay K. Lalwani
- Department of Pediatrics, Bharati Vidyapeeth Deemed University Medical College, Pune, Maharashtra, India
| | - Meera Modak
- Department of Microbiology, Bharati Vidyapeeth Deemed University Medical College, Pune, Maharashtra, India
| | - Akhilesh Chandra Mishra
- Department of Communicable Diseases, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India
| | - Vidya A. Arankalle
- Department of Communicable Diseases, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India
- * E-mail:
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Li WL, Wu MS, Guo PL, Hu FY, Li LH, Tang XP. Overexpression of A20 inhibits the inflammatory response during dengue fever infection. Future Virol 2018. [DOI: 10.2217/fvl-2017-0083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aim: Dengue hemorrhagic fever is a devastating disease. This study aimed to investigate the role of A20 in dengue fever infection. Materials & methods: DENV2-infected human umbilical vein endothelial cells were transfected with shRNA-A20/CD14 and A20/CD14-mimics, respectively. The expressions of inflammatory and anti-inflammatory factors, A20 and downstream proteins of the NF-κB signaling pathway were detected. Results: A20 knockdown increased the expression of IL-6, IL-10, IL-8 and CD14 during dengue virus infection, whereas overexpression of A20 had the opposite effect. FACS revealed that A20 negatively regulated the expression of CD14. Conclusion: In DENV2-infected human umbilical vein endothelial cells overexpressing A20, TNF-α stimulation inhibited NF-κB-mediated inflammatory response by negative feedback. Furthermore, A20 could affect the release of inflammatory factors via negative regulation of CD14, thus affecting the entire inflammatory response.
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Affiliation(s)
- Wen-Li Li
- Department of Infectious Diseases, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
- Department of Infectious Diseases, Guangdong Second Provincial General Hospital, Guangzhou, 510317, China
| | - Mao-Sheng Wu
- Department of Infectious Diseases, Guangdong Second Provincial General Hospital, Guangzhou, 510317, China
| | - Peng-Le Guo
- Number Eight People’s Hospital of Guangzhou, Guangzhou, 510060, China
| | - Feng-Yu Hu
- Number Eight People’s Hospital of Guangzhou, Guangzhou, 510060, China
| | - Ling-Hua Li
- Number Eight People’s Hospital of Guangzhou, Guangzhou, 510060, China
| | - Xiao-Ping Tang
- Department of Infectious Diseases, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, China
- Number Eight People’s Hospital of Guangzhou, Guangzhou, 510060, China
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Manchala NR, Dungdung R, Pilankatta R. Proteomic analysis reveals the enhancement of human serum apolipoprotein A-1(APO A-1) in individuals infected with multiple dengue virus serotypes. Trop Med Int Health 2017; 22:1334-1342. [DOI: 10.1111/tmi.12931] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Nageswar Reddy Manchala
- Department of Biochemistry and Molecular Biology; School of Biological Sciences; Central University of Kerala; Padannakkad Kerala India
| | - Ranjeet Dungdung
- Department of Biochemistry and Molecular Biology; School of Biological Sciences; Central University of Kerala; Padannakkad Kerala India
| | - Rajendra Pilankatta
- Department of Biochemistry and Molecular Biology; School of Biological Sciences; Central University of Kerala; Padannakkad Kerala India
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Requena-Castro R, Reyes-López MÁ, Rodríguez-Reyna RE, Palma-Nicolás P, Bocanegra-García V. Molecular detection of mixed infections with multiple dengue virus serotypes in suspected dengue samples in Tamaulipas, Mexico. Mem Inst Oswaldo Cruz 2017; 112:520-522. [PMID: 28591316 PMCID: PMC5452492 DOI: 10.1590/0074-02760160468] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 03/29/2017] [Indexed: 11/22/2022] Open
Abstract
This study aimed to detect dengue virus (DENV) serotypes in serum samples obtained in Matamoros Tamaulipas, Mexico, and to determine the concordance of conventional nested reverse transcriptase polymerase chain reaction (RT-PCR) and a serological test [enzyme-linked immunosorbent assay (ELISA NS1)]. Here, we detected mixed infections consisting of four serotypes of DENV. The most prevalent serotype was DENV-1, followed by DENV-4. This is the first report of DENV-4 in our region. Mixed infections were also detected in 21.5% of samples, and the predominant coinfection consisted of DENV-1 and DENV-2. Therefore, continuous epidemiological surveillance of DENV in this area is required to predict future forms of dengue heterologous infections and the effect of this on health care.
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