1
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Marques ETA, Dhalia R. Chikungunya vaccine VLA1553 induces sustained protective antibody concentrations. THE LANCET. INFECTIOUS DISEASES 2024:S1473-3099(24)00432-8. [PMID: 39146947 DOI: 10.1016/s1473-3099(24)00432-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Accepted: 07/02/2024] [Indexed: 08/17/2024]
Affiliation(s)
- Ernesto T A Marques
- Department of Virology and Experimental Therapeutics, Instituto Aggeu Magalhães, Fundação Oswaldo Cruz - FIOCRUZ, Recife, Brazil; Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, 1526 PA, USA.
| | - Rafael Dhalia
- Department of Virology and Experimental Therapeutics, Instituto Aggeu Magalhães, Fundação Oswaldo Cruz - FIOCRUZ, Recife, Brazil
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2
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da Costa VG, Saivish MV, Sinhorini PF, Nogueira ML, Rahal P. A meta-analysis of Chikungunya virus in neurological disorders. Infect Dis Now 2024; 54:104938. [PMID: 38885813 DOI: 10.1016/j.idnow.2024.104938] [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] [Received: 11/22/2023] [Revised: 03/17/2024] [Accepted: 06/13/2024] [Indexed: 06/20/2024]
Abstract
Chikungunya disease typically presents with the fever-arthralgia-rash symptom triad. However, an increase in the number of atypical clinical manifestations, particularly neurological disorders, has occurred. The current evidence regarding the pooled prevalence of Chikungunya virus (CHIKV)-associated neurological cases (CANCs) suspected of having an arboviral aetiology is not well-understood. Therefore, this meta-analysis included 19 studies (n = 7319 patients) and aimed to determine the pooled rate of exposure to CANC. The pooled positivity rate of CANC was 12 % (95 % CI: 6-19), and Brazil was overrepresented (11/19). These estimations varied between 3 and 14 % based on the diagnostic method (real-time PCR vs. ELISA-IgM) and biological samples (cerebrospinal fluid or blood specimens) used for detection of CHIKV. Regarding the frequency of CHIKV in neurological clinical subgroups, the rates were higher among patients with myelitis (27 %), acute disseminated encephalomyelitis (27 %), Guillain-Barré syndrome (15 %), encephalitis (12 %), and meningoencephalitis (7 %). Our analysis highlights the significant burden of CANC. However, the data must be interpreted with caution due to the heterogeneity of the results, which may be related to the location of the studies covering endemic periods and/or outbreaks of CHIKV. Current surveillance resources should also focus on better characterizing the epidemiology of CHIKV infection in neurological disorders. Additionally, future studies should investigate the interactions between CHIKV and neurological diseases with the aim of gaining deeper insight into the mechanisms underlying the cause-and-effect relationship between these two phenomena.
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Affiliation(s)
- Vivaldo G da Costa
- Laboratório de Estudos Genômicos, Departamento de Biologia, Instituto de Biociências Letras e Ciências Exatas, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), São José do Rio Preto 15054-000, SP, Brazil.
| | - Marielena V Saivish
- Laboratório de Pesquisas em Virologia, Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto 15090‑000, SP, Brazil; Laboratório Nacional de Biociências, Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas 13083‑100, SP, Brazil
| | - Paola F Sinhorini
- Laboratório de Estudos Genômicos, Departamento de Biologia, Instituto de Biociências Letras e Ciências Exatas, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), São José do Rio Preto 15054-000, SP, Brazil
| | - Maurício L Nogueira
- Laboratório de Pesquisas em Virologia, Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto 15090‑000, SP, Brazil; Department of Pathology, The University of Texas Medical Branch, Galveston, TX 77555-0609, USA
| | - Paula Rahal
- Laboratório de Estudos Genômicos, Departamento de Biologia, Instituto de Biociências Letras e Ciências Exatas, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), São José do Rio Preto 15054-000, SP, Brazil.
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3
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Ramphal Y, Tegally H, San JE, Reichmuth ML, Hofstra M, Wilkinson E, Baxter C, de Oliveira T, Moir M. Understanding the Transmission Dynamics of the Chikungunya Virus in Africa. Pathogens 2024; 13:605. [PMID: 39057831 PMCID: PMC11279734 DOI: 10.3390/pathogens13070605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 07/09/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
The Chikungunya virus (CHIKV) poses a significant global public health concern, especially in Africa. Since its first isolation in Tanzania in 1953, CHIKV has caused recurrent outbreaks, challenging healthcare systems in low-resource settings. Recent outbreaks in Africa highlight the dynamic nature of CHIKV transmission and the challenges of underreporting and underdiagnosis. Here, we review the literature and analyse publicly available cases, outbreaks, and genomic data, providing insights into the epidemiology, genetic diversity, and transmission dynamics of CHIKV in Africa. Our analyses reveal the circulation of geographically distinct CHIKV genotypes, with certain regions experiencing a disproportionate burden of disease. Phylogenetic analysis of sporadic outbreaks in West Africa suggests repeated emergence of the virus through enzootic spillover, which is markedly different from inferred transmission dynamics in East Africa, where the virus is often introduced from Asian outbreaks, including the recent reintroduction of the Indian Ocean lineage from the Indian subcontinent to East Africa. Furthermore, there is limited evidence of viral movement between these two regions. Understanding the history and transmission dynamics of outbreaks is crucial for effective public health planning. Despite advances in surveillance and research, diagnostic and surveillance challenges persist. This review and secondary analysis highlight the importance of ongoing surveillance, research, and collaboration to mitigate the burden of CHIKV in Africa and improve public health outcomes.
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Affiliation(s)
- Yajna Ramphal
- Centre for Epidemic Response Innovation (CERI), School for Data Science and Computational Thinking, Stellenbosch University, Stellenbosch 7600, South Africa; (Y.R.); (H.T.); (M.H.); (E.W.); (C.B.)
| | - Houriiyah Tegally
- Centre for Epidemic Response Innovation (CERI), School for Data Science and Computational Thinking, Stellenbosch University, Stellenbosch 7600, South Africa; (Y.R.); (H.T.); (M.H.); (E.W.); (C.B.)
| | | | | | - Marije Hofstra
- Centre for Epidemic Response Innovation (CERI), School for Data Science and Computational Thinking, Stellenbosch University, Stellenbosch 7600, South Africa; (Y.R.); (H.T.); (M.H.); (E.W.); (C.B.)
| | - Eduan Wilkinson
- Centre for Epidemic Response Innovation (CERI), School for Data Science and Computational Thinking, Stellenbosch University, Stellenbosch 7600, South Africa; (Y.R.); (H.T.); (M.H.); (E.W.); (C.B.)
| | - Cheryl Baxter
- Centre for Epidemic Response Innovation (CERI), School for Data Science and Computational Thinking, Stellenbosch University, Stellenbosch 7600, South Africa; (Y.R.); (H.T.); (M.H.); (E.W.); (C.B.)
| | | | - Tulio de Oliveira
- Centre for Epidemic Response Innovation (CERI), School for Data Science and Computational Thinking, Stellenbosch University, Stellenbosch 7600, South Africa; (Y.R.); (H.T.); (M.H.); (E.W.); (C.B.)
- KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), University of KwaZulu-Natal, Durban 4001, South Africa
| | - Monika Moir
- Centre for Epidemic Response Innovation (CERI), School for Data Science and Computational Thinking, Stellenbosch University, Stellenbosch 7600, South Africa; (Y.R.); (H.T.); (M.H.); (E.W.); (C.B.)
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4
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Aguiar GRF, da Silva GB, Ramalho JDAM, Srisawat N, Daher EDF. Common arboviruses and the kidney: a review. J Bras Nefrol 2024; 46:e20230168. [PMID: 39074252 PMCID: PMC11287847 DOI: 10.1590/2175-8239-jbn-2023-0168en] [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] [Received: 11/16/2023] [Accepted: 05/17/2024] [Indexed: 07/31/2024] Open
Abstract
Arboviruses are endemic in several countries and represent a worrying public health problem. The most important of these diseases is dengue fever, whose numbers continue to rise and have reached millions of annual cases in Brazil since the last decade. Other arboviruses of public health concern are chikungunya and Zika, both of which have caused recent epidemics, and yellow fever, which has also caused epidemic outbreaks in our country. Like most infectious diseases, arboviruses have the potential to affect the kidneys through several mechanisms. These include the direct action of the viruses, systemic inflammation, hemorrhagic phenomena and other complications, in addition to the toxicity of the drugs used in treatment. In this review article, the epidemiological aspects of the main arboviruses in Brazil and other countries where these diseases are endemic, clinical aspects and the main laboratory changes found, including changes in renal function, are addressed. It also describes how arboviruses behave in kidney transplant patients. The pathophysiological mechanisms of kidney injury associated with arboviruses are described and finally the recommended treatment for each disease and recommendations for kidney support in this context are given.
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Affiliation(s)
- Gabriel Rotsen Fortes Aguiar
- Universidade Federal do Ceará, Faculdade de Medicina, Programa de Pós-Graduação em Ciências Médicas, Departamento de Medicina Interna, Fortaleza, CE, Brazil
| | - Geraldo Bezerra da Silva
- Universidade de Fortaleza, Centro de Ciências da Saúde, Curso de Medicina, Fortaleza, CE, Brazil
| | - Janaína de Almeida Mota Ramalho
- Universidade Federal do Ceará, Faculdade de Medicina, Programa de Pós-Graduação em Ciências Médicas, Departamento de Medicina Interna, Fortaleza, CE, Brazil
- Universidade de Fortaleza, Centro de Ciências da Saúde, Curso de Medicina, Fortaleza, CE, Brazil
| | - Nattachai Srisawat
- Chulalongkorn University, Faculty of Medicine, Department of Medicine, Division of Nephrology, Center of Excellence for Critical Care Nephrology, and Tropical Medicine Cluster, Bangkok, Tailândia
| | - Elizabeth de Francesco Daher
- Universidade Federal do Ceará, Faculdade de Medicina, Programa de Pós-Graduação em Ciências Médicas, Departamento de Medicina Interna, Fortaleza, CE, Brazil
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5
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de Jesus Santos T, de Araújo KCGM, Góes MADO, Bezerra-Santos M, Ribeiro CJN, dos Santos AD, Camargo ELS, Souza RCS, Mendes IAC, de Sousa AFL, da Conceição Araújo D. Spatial and Temporal Dynamics of Chikungunya Incidence in Brazil and the Impact of Social Vulnerability: A Population-Based and Ecological Study. Diseases 2024; 12:135. [PMID: 39057106 PMCID: PMC11276368 DOI: 10.3390/diseases12070135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/02/2024] [Accepted: 06/04/2024] [Indexed: 07/28/2024] Open
Abstract
To assess the temporal and spatial dynamics of chikungunya incidence and its association with social vulnerability indicators in Brazil, an ecological and population-based study was conducted herein, with confirmed cases of chikungunya and based on clinical and clinical-epidemiological criteria from 2017 to 2023. Data were obtained from the Notifiable Diseases Information System and social vulnerability indicators were extracted from the official platform of the United Nations Development Program and the Social Vulnerability Atlas. Temporal, spatial, and global spatial regression models were employed. The temporal trend showed that in 2017, the incidence increased by 1.9%, and this trend decreased from 2020 to 2021 (-0.93%). The spatial distribution showed heterogeneity and positive spatial autocorrelation (I: 0.71; p < 0.001) in chikungunya cases in Brazil. Also, the high-risk areas for the disease were concentrated in the northeast and north regions. The social vulnerability indicators associated with the outcome were those related to income, education, and housing conditions. Our analyses demonstrate that chikungunya continues to be a serious health concern in Brazil, but specially in the northeast and north regions. Lastly, mapping risk areas can provide evidence for the development of public health strategies and disease control in endemic regions.
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Affiliation(s)
- Thiago de Jesus Santos
- Graduate Program in Nursing, Federal University of Sergipe, São Cristóvão 49100-000, Brazil; (T.d.J.S.); (M.A.d.O.G.); (C.J.N.R.); (A.D.d.S.); (D.d.C.A.)
| | | | - Marco Aurélio de Oliveira Góes
- Graduate Program in Nursing, Federal University of Sergipe, São Cristóvão 49100-000, Brazil; (T.d.J.S.); (M.A.d.O.G.); (C.J.N.R.); (A.D.d.S.); (D.d.C.A.)
| | - Marcio Bezerra-Santos
- Medical and Nursing Science Center, Federal University of Alagoas, Campus Arapiraca, Arapiraca 57309-005, Brazil; (K.C.G.M.d.A.); (M.B.-S.)
| | - Caíque Jordan Nunes Ribeiro
- Graduate Program in Nursing, Federal University of Sergipe, São Cristóvão 49100-000, Brazil; (T.d.J.S.); (M.A.d.O.G.); (C.J.N.R.); (A.D.d.S.); (D.d.C.A.)
| | - Allan Dantas dos Santos
- Graduate Program in Nursing, Federal University of Sergipe, São Cristóvão 49100-000, Brazil; (T.d.J.S.); (M.A.d.O.G.); (C.J.N.R.); (A.D.d.S.); (D.d.C.A.)
| | - Emerson Lucas Silva Camargo
- Ribeirao Preto College of Nursing, Universidade de São Paulo, Ribeirao Preto 14040-902, Brazil; (E.L.S.C.); (I.A.C.M.)
| | | | - Isabel Amélia Costa Mendes
- Ribeirao Preto College of Nursing, Universidade de São Paulo, Ribeirao Preto 14040-902, Brazil; (E.L.S.C.); (I.A.C.M.)
| | - Alvaro Francisco Lopes de Sousa
- Hospital Sírio-Libanês, Faculdade Sírio-Libanês, São Paulo 01308-050, Brazil;
- NOVA National School of Public Health, Comprehensive Health Research Center (CHRC), NOVA University of Lisbon, 1600-560 Lisbon, Portugal
| | - Damião da Conceição Araújo
- Graduate Program in Nursing, Federal University of Sergipe, São Cristóvão 49100-000, Brazil; (T.d.J.S.); (M.A.d.O.G.); (C.J.N.R.); (A.D.d.S.); (D.d.C.A.)
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6
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Rabelo V, Sanchez-Nuñez ML, Corrêa-Amorim LS, Kuhn RJ, Abreu PA, Paixão ICNP. In Silico Drug Repurposing Uncovered the Antiviral Potential of the Antiparasitic Drug Oxibendazole Against the Chikungunya Virus. ACS OMEGA 2024; 9:27632-27642. [PMID: 38947813 PMCID: PMC11209700 DOI: 10.1021/acsomega.4c03417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/23/2024] [Accepted: 05/31/2024] [Indexed: 07/02/2024]
Abstract
Chikungunya virus (CHIKV) has been reported in over 120 countries and is the causative agent of Chikungunya fever. The debilitating nature of this disease, which can persist months to years after acute infection, drastically impacts the quality of life of patients. Yet, specific antivirals are lacking for the treatment of this disease, which makes the search for new drugs necessary. In this context, the nsP2 protease emerges as an attractive therapeutic target, and drug repurposing strategies have proven to be valuable. Therefore, we combined in silico and in vitro methods to identify known drugs as potential CHIKV nsP2 protease inhibitors with antiviral properties within DrugBank. Herein, we developed a hybrid virtual screening pipeline comprising pharmacophore- and target-based screening, drug-like, and pharmaceutical filtering steps. Six virtual hits were obtained, and two of them, capecitabine (CPB) and oxibendazole (OBZ), were evaluated against CHIKV replication in Vero cells. CPB did not present antiviral activity, whereas OBZ inhibited the replication of two different strains of CHIKV, namely, 181-25 (Asian genotype) and BRA/RJ/18 (clinical isolate from ECSA genotype). OBZ showed potent antiviral activity against the CHIKV BRA/RJ/18 (EC50 = 11.4 μM) with a high selectivity index (>44). Analogs of OBZ (albendazole, fenbendazole, and mebendazole) were also evaluated, but none exhibited anti-CHIKV activity, and further, their stereoelectronic features were analyzed. Additionally, we observed that OBZ acts mainly at post-entry steps. Hence, our results support further in vivo studies to investigate the antiviral potential of OBZ, which offers a new alternative to fight CHIKV infections.
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Affiliation(s)
- Vitor
W. Rabelo
- Programa
de Pós-graduação em Ciências e Biotecnologia,
Instituto de Biologia, Universidade Federal
Fluminense, Niterói, Rio de Janeiro CEP 24210-201, Brazil
| | - Maria Leonisa Sanchez-Nuñez
- Programa
de Pós-graduação em Ciências e Biotecnologia,
Instituto de Biologia, Universidade Federal
Fluminense, Niterói, Rio de Janeiro CEP 24210-201, Brazil
| | - Leonardo S. Corrêa-Amorim
- Programa
de Pós-graduação em Ciências e Biotecnologia,
Instituto de Biologia, Universidade Federal
Fluminense, Niterói, Rio de Janeiro CEP 24210-201, Brazil
- Gerência
de Desenvolvimento Tecnológico, Instituto
Vital Brazil, Niterói, Rio de Janeiro 24230-410, Brazil
| | - Richard J. Kuhn
- Department
of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, United States
- Purdue
Institute of Inflammation, Immunology, and Infectious Disease, Purdue University, West Lafayette, Indiana 47907, United States
| | - Paula A. Abreu
- Instituto
de Biodiversidade e Sustentabilidade (NUPEM), Campus Macaé, Universidade Federal do Rio de Janeiro, Rio de Janeiro CEP 27965-045, Brazil
| | - Izabel C. N. P. Paixão
- Programa
de Pós-graduação em Ciências e Biotecnologia,
Instituto de Biologia, Universidade Federal
Fluminense, Niterói, Rio de Janeiro CEP 24210-201, Brazil
- Departamento
de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro CEP 24210-201, Brazil
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Serfaty A, Mendonça S, Canella C, Marchiori E. Detection of musculoskeletal inflammatory lesions in patients with chronic chikungunya infection using 3T whole-body magnetic resonance imaging. Rev Soc Bras Med Trop 2024; 57:e004062024. [PMID: 38808799 PMCID: PMC11136507 DOI: 10.1590/0037-8682-0090-2024] [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] [Received: 03/09/2024] [Accepted: 05/09/2024] [Indexed: 05/30/2024] Open
Abstract
BACKGROUND Musculoskeletal inflammatory lesions in chronic Chikungunya virus (CHIKV) infection have not been thoroughly assessed using whole-body magnetic resonance imaging (WBMRI). This study aimed to determine the prevalence of these lesions in such patients. METHODS From September 2018 to February 2019, patients with positive Chikungunya-specific serology (Immunoglobulin M/Immunoglobulin G anti-CHIKV), with a history of polyarthralgia for > 6 months prior to MRI with no pre-existing rheumatic disorders, underwent 3T WBMRI and localized MRI. The evaluation focused on musculoskeletal inflammatory lesions correlated with chronic CHIKV infection. Pain levels were assessed using a visual analogue scale on the same day as WBMRI. RESULTS The study included 86 patients of whom 26 met the inclusion criteria. All patients reported pain and most (92.3%) categorized it as moderate or severe. The most common finding across joints was effusion, particularly in the tibiotalar joint (57.7%) and bursitis, with the retrocalcaneal bursa most affected (48.0%). Tenosynovitis was prevalent in the flexor compartment of the hands (44.2%), while Kager fat pad and soleus edema were also observed. Bone marrow edema-like signals were frequently seen in the sacroiliac joints (19.2%). Most WBMRI findings were classified as mild. CONCLUSIONS This study represents the first utilization of 3T WBMRI to assess musculoskeletal inflammatory disorders in chronic CHIKV infection. The aim was to identify the most affected joints and prevalent lesions, providing valuable insights for future research and clinical management of this condition regarding understanding disease pathophysiology, developing targeted treatment strategies, and using advanced imaging techniques in the assessment of musculoskeletal manifestations.
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Affiliation(s)
- Aline Serfaty
- Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
- Medscanlagos Diagnóstico por imagem, Cabo Frio, RJ, Brasil
| | - Silvana Mendonça
- Clínica de Diagnóstico por Imagem CDPI, Rio de Janeiro, RJ, Brasil
| | | | - Edson Marchiori
- Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
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Martin MF, Bonaventure B, McCray NE, Peersen OB, Rozen-Gagnon K, Stapleford KA. Distinct chikungunya virus polymerase palm subdomains contribute to virus replication and virion assembly. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.15.575630. [PMID: 38293111 PMCID: PMC10827052 DOI: 10.1101/2024.01.15.575630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Alphaviruses encode an error-prone RNA-dependent RNA polymerase (RdRp), nsP4, required for genome synthesis, yet how the RdRp functions in the complete alphavirus life cycle is not well-defined. Previous work using chikungunya virus (CHIKV) has established the importance of the nsP4 residue cysteine 483 in maintaining viral genetic fidelity. Given the location of residue C483 in the nsP4 palm domain, we hypothesized that other residues within this domain and surrounding subdomains would also contribute to polymerase function. To test this hypothesis, we designed a panel of nsP4 variants via homology modeling based on the Coxsackievirus B3 3 polymerase. We rescued each variant in both mammalian and mosquito cells and discovered that the palm domain and ring finger subdomain contribute to polymerase host-specific replication and genetic stability. Surprisingly, in mosquito cells, these variants in the ring finger and palm domain were replication competent and produced viral structural proteins, but they were unable to produce infectious progeny, indicating a yet uncharacterized role for the polymerase in viral assembly. Finally, we have identified additional residues in the nsP4 palm domain that influence the genetic diversity of the viral progeny, potentially via an alteration in NTP binding and/or discrimination by the polymerase. Taken together, these studies highlight that distinct nsP4 subdomains regulate multiple processes of the alphavirus life cycle, placing nsP4 in a central role during the switch from RNA synthesis to packaging and assembly.
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Affiliation(s)
- Marie-France Martin
- Department of Microbiology, New York University Grossman School of Medicine, New York, New York, USA
| | - Boris Bonaventure
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Nia E. McCray
- Department of Microbiology, New York University Grossman School of Medicine, New York, New York, USA
| | - Olve B. Peersen
- Department of Biochemistry & Molecular Biology, Colorado State University, Fort Collins, CO, USA
| | | | - Kenneth A. Stapleford
- Department of Microbiology, New York University Grossman School of Medicine, New York, New York, USA
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9
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Torres dos Santos Lopes D, Cerutti Junior C, Areias Cabidelle A, Espinosa Miranda A, Drumond Louro I, Pamplona de Góes Cavalcanti L, Vicente CR. Factors associated with hospitalization in the acute phase of Chikungunya. PLoS One 2023; 18:e0296131. [PMID: 38134205 PMCID: PMC10745164 DOI: 10.1371/journal.pone.0296131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
OBJECTIVE Determine characteristics associated with hospitalization in the acute phase of Chikungunya. METHODS Cross-sectional study including data on Chikungunya cases reported in Vitória, Espírito Santo state, Brazil, between March 2016 and December 2021. RESULTS Hospitalizations accounted for 1.42% (n = 41) of the 2,868 cases included. There were statistically significant differences between hospitalized and non-hospitalized regarding age (P 0.001), which was lower among hospitalized patients, and pregnancy, which was more frequent in the hospitalized group (P 0.010). Patients younger than two years old and older than 65 years corresponded to 31.7% of hospitalizations. Back pain (OR = 0.134; 95% CI = 0.044-0.409) and arthralgia (OR = 0.226; 95% CI = 0.083-0.613) were protective factors for hospitalization. CONCLUSION Groups at risk of severe Chikungunya, including those under two and over 65 years of age, may require more hospitalization, even with milder manifestations.
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Affiliation(s)
| | - Crispim Cerutti Junior
- Postgraduate Program in Infectious Disease, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
- Department of Social Medicine, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Aline Areias Cabidelle
- Health Surveillance Sector, Health Department of Vitória, Vitória, Espírito Santo, Brazil
| | - Angelica Espinosa Miranda
- Postgraduate Program in Infectious Disease, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
- Department of Social Medicine, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Iuri Drumond Louro
- Postgraduate Program in Biotechnology, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
- Department of Biology, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | | | - Creuza Rachel Vicente
- Postgraduate Program in Infectious Disease, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
- Department of Social Medicine, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
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10
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Mishra P, Balaraman V, Fraser MJ. Maxizyme-mediated suppression of chikungunya virus replication and transmission in transgenic Aedes aegypti mosquitoes. Front Microbiol 2023; 14:1286519. [PMID: 38188571 PMCID: PMC10766806 DOI: 10.3389/fmicb.2023.1286519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/14/2023] [Indexed: 01/09/2024] Open
Abstract
Chikungunya virus (CHIKV) is an emerging mosquito-borne pathogen of significant public health importance. There are currently no prophylactic vaccines or therapeutics available to control CHIKV. One approach to arbovirus control that has been proposed is the replacement of transmission-competent mosquitoes with those that are refractory to virus infection. Several transgene effectors are being examined as potentially useful for this population replacement approach. We previously demonstrated the successful use of hammerhead ribozymes (hRzs) as an antiviral effector transgene to control CHIKV infection of, and transmission by, Aedes mosquitoes. In this report we examine a maxizyme approach to enhance the catalytic activity and prevent virus mutants from escaping these ribozymes. We designed a maxizyme containing minimized (monomer) versions of two hRzs we previously demonstrated to be the most effective in CHIKV suppression. Three versions of CHIKV maxizyme were designed: Active (Mz), inactive (ΔMz), and a connected CHIKV maxizyme (cMz). The maxizymes with their expression units (Ae-tRNA val promoter and its termination signal) were incorporated into lentivirus vectors with selection and visualization markers. Following transformation, selection, and single-cell sorting of Vero cells, clonal cell populations were infected with CHIKV at 0.05 and 0.5 MOI, and virus suppression was assessed using TCID50-IFA, RT-qPCR, and caspase-3 assays. Five transgenic mosquito lines expressing cMz were generated and transgene insertion sites were confirmed by splinkerette PCR. Our results demonstrate that Vero cell clones expressing Mz exhibited complete inhibition of CHIKV replication compared to their respective inactive control version or the two parent hRzs. Upon oral challenge of transgenic mosquitoes with CHIKV, three out of the five lines were completely refractory to CHIKV infection, and all five lines tested negative for salivary transmission. Altogether, this study demonstrates that maxizymes can provide a higher catalytic activity and viral suppression than hRzs.
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Affiliation(s)
| | | | - Malcolm J. Fraser
- Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, United States
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