1
|
Wood MJ, Bull JC, Kanagachandran K, Butt TM. Development and laboratory validation of a plant-derived repellent blend, effective against Aedes aegypti [Diptera: Culicidae], Anopheles gambiae [Diptera: Culicidae] and Culex quinquefasciatus [Diptera: Culicidae]. PLoS One 2024; 19:e0299144. [PMID: 38512948 PMCID: PMC10956804 DOI: 10.1371/journal.pone.0299144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 02/06/2024] [Indexed: 03/23/2024] Open
Abstract
Mosquitoes of the genera Aedes, Anopheles and Culex vector a wide range of pathogens seriously affecting humans and livestock on a global scale. Over-reliance on insecticides and repellents has driven research into alternative, naturally-derived compounds to fulfil the same objectives. Steam distilled extracts of four plants with strong, yet attractive, volatile profiles were initially assessed for repellency in a dual-port olfactometer using Aedes aegypti as the model species. Picea sitchensis was found to be the most repellent, proving comparable to leading products when applied at 100% (p = 1.000). Key components of conifer-derived volatile profiles were then screened via electroantennography before those components eliciting an electrophysiological response were assayed individually in the olfactometer; according to WHO protocol. The most promising 5 were selected for reductive analyses to produce an optimised semiochemical blend. This combination, and a further two variations of the blend, were then progressed to a multi-species analysis using the BG-test whereby bite-attempt frequency on hands was assessed under different repellent treatments; assays were compared between Aedes aegypti, Anopheles gambiae and Culex quinquefasciatus. Efficacy was found against all three species, although it was found that Ae. aegypti was the most susceptible to the repellent, with An. gambiae being the least. Here, a novel, naturally-derived blend is presented with weak spatial repellency, as confirmed in laboratory assays. Further work will be required to assess the full extent of the potential of the products, both in terms of field application and species screening; however, the success of the products developed demonstrate that plant metabolites have great capacity for use in the repellent sector; both to improve upon known compounds and to reduce the usage of toxic products currently on the market.
Collapse
Affiliation(s)
- Martyn J. Wood
- Department of Biosciences, Faculty of Science and Engineering, Swansea University, Swansea, United Kingdom
| | - James C. Bull
- Department of Biosciences, Faculty of Science and Engineering, Swansea University, Swansea, United Kingdom
| | | | - Tariq M. Butt
- Department of Biosciences, Faculty of Science and Engineering, Swansea University, Swansea, United Kingdom
| |
Collapse
|
2
|
Pakaya R, Daniel D, Widayani P, Utarini A. Spatial model of Dengue Hemorrhagic Fever (DHF) risk: scoping review. BMC Public Health 2023; 23:2448. [PMID: 38062404 PMCID: PMC10701958 DOI: 10.1186/s12889-023-17185-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 11/08/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Creating a spatial model of dengue fever risk is challenging duet to many interrelated factors that could affect dengue. Therefore, it is crucial to understand how these critical factors interact and to create reliable predictive models that can be used to mitigate and control the spread of dengue. METHODS This scoping review aims to provide a comprehensive overview of the important predictors, and spatial modelling tools capable of producing Dengue Haemorrhagic Fever (DHF) risk maps. We conducted a methodical exploration utilizing diverse sources, i.e., PubMed, Scopus, Science Direct, and Google Scholar. The following data were extracted from articles published between January 2011 to August 2022: country, region, administrative level, type of scale, spatial model, dengue data use, and categories of predictors. Applying the eligibility criteria, 45 out of 1,349 articles were selected. RESULTS A variety of models and techniques were used to identify DHF risk areas with an arrangement of various multiple-criteria decision-making, statistical, and machine learning technique. We found that there was no pattern of predictor use associated with particular approaches. Instead, a wide range of predictors was used to create the DHF risk maps. These predictors may include climatology factors (e.g., temperature, rainfall, humidity), epidemiological factors (population, demographics, socio-economic, previous DHF cases), environmental factors (land-use, elevation), and relevant factors. CONCLUSIONS DHF risk spatial models are useful tools for detecting high-risk locations and driving proactive public health initiatives. Relying on geographical and environmental elements, these models ignored the impact of human behaviour and social dynamics. To improve the prediction accuracy, there is a need for a more comprehensive approach to understand DHF transmission dynamics.
Collapse
Affiliation(s)
- Ririn Pakaya
- Doctoral Program in Public Health, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia.
- Department of Public Health, Public Health Faculty, Universitas Gorontalo, Gorontalo, Indonesia.
| | - D Daniel
- Department of Health Behaviour, Environment and Social Medicine, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Prima Widayani
- Department of Geographic Information Science, Faculty of Geography, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Adi Utarini
- Doctoral Program in Public Health, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
- Department of Health Policy and Management, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| |
Collapse
|
3
|
Naik BR, Tyagi BK, Xue RD. Mosquito-borne diseases in India over the past 50 years and their Global Public Health Implications: A Systematic Review. JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION 2023; 39:258-277. [PMID: 38108431 DOI: 10.2987/23-7131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Mosquito-borne diseases (MBDs) pose a significant public health concern globally, and India, with its unique eco-sociodemographic characteristics, is particularly vulnerable to these diseases. This comprehensive review aims to provide an in-depth overview of MBDs in India, emphasizing their impact and potential implications for global health. The article explores distribution, epidemiology, control or elimination, and economic burden of the prevalent diseases such as malaria, dengue, chikungunya, Japanese encephalitis, and lymphatic filariasis, which collectively contribute to millions of cases annually. It sheds light on their profound effects on morbidity, mortality, and socioeconomic burdens and the potential for international transmission through travel and trade. The challenges and perspectives associated with controlling mosquito populations are highlighted, underscoring the importance of effective public health communication for prevention and early detection. The potential for these diseases to spread beyond national borders is recognized, necessitating a holistic approach to address the challenge. A comprehensive literature search was conducted, covering the past five decades (1972-2022), utilizing databases such as Web of Science, PubMed, and Google Scholar, in addition to in-person library consultations. The literature review analyzed 4,082 articles initially identified through various databases. After screening and eligibility assessment, 252 articles were included for analysis. The review focused on malaria, dengue, chikungunya, Japanese encephalitis, and lymphatic filariasis. The included studies focused on MBDs occurrence in India, while those conducted outside India, lacking statistical analysis, or published before 1970 were excluded. This review provides valuable insights into the status of MBDs in India and underscores the need for concerted efforts to combat these diseases on both national and global scales through consilience.
Collapse
|
4
|
Poddar NK, Khan A, Fatima F, Saxena A, Ghaley G, Khan S. Association of mTOR Pathway and Conformational Alterations in C-Reactive Protein in Neurodegenerative Diseases and Infections. Cell Mol Neurobiol 2023; 43:3815-3832. [PMID: 37665407 DOI: 10.1007/s10571-023-01402-z] [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: 06/02/2023] [Accepted: 08/15/2023] [Indexed: 09/05/2023]
Abstract
Inflammatory biomarkers have been very useful in detecting and monitoring inflammatory processes along with providing helpful information to select appropriate therapeutic strategies. C-reactive protein (CRP) is a nonspecific, but quite useful medical acute inflammatory biomarker and is associated with persistent chronic inflammatory processes. Several studies suggest that different levels of CRP are correlated with neurological disorders such as Alzheimer's disease (AD). However, dynamics of CRP levels have also been observed in virus/bacterial-related infections leading to inflammatory responses and this triggers mTOR-mediated pathways for neurodegeneration diseases. The biophysical structural transition from CRP to monomeric CRP (mCRP) and the significance of the ratio of CRP levels on the onset of symptoms associated with inflammatory response have been discussed. In addition, mTOR inhibitors act as immunomodulators by downregulating the expression of viral infection and can be explored as a potential therapy for neurological diseases.
Collapse
Affiliation(s)
- Nitesh Kumar Poddar
- Department of Biosciences, Manipal University Jaipur, Jaipur-Ajmer Express Highway, Dehmi Kalan, Near GVK Toll Plaza, Jaipur, Rajasthan, India, 303007.
| | - Arshma Khan
- Department of Biotechnology, Invertis University, Bareilly, Uttar Pradesh, India, 243123
| | - Falak Fatima
- Amity Institute of Biotechnology, Amity University, Uttar Pradesh, Noida, India, 201301
| | - Anshulika Saxena
- Department of Biosciences, Manipal University Jaipur, Jaipur-Ajmer Express Highway, Dehmi Kalan, Near GVK Toll Plaza, Jaipur, Rajasthan, India, 303007
| | - Garima Ghaley
- Department of Biosciences, Manipal University Jaipur, Jaipur-Ajmer Express Highway, Dehmi Kalan, Near GVK Toll Plaza, Jaipur, Rajasthan, India, 303007
| | - Shahanavaj Khan
- Department of Medical Lab Technology, Indian Institute of Health and Technology (IIHT), Deoband, Saharanpur, Uttar Pradesh, India, 247554.
| |
Collapse
|
5
|
Alagarasu K, Patil J, Jadhav S, Chowdhury D, Bote M, Punekar M, More A, Kakade M, Bachal R, Gurav Y, Cherian S, Parashar D. Understanding the resurgence of chikungunya virus during 2020-2021 in Pune, India, based on genomic analyses: A seven year study. J Med Virol 2023; 95:e29253. [PMID: 38009608 DOI: 10.1002/jmv.29253] [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: 05/10/2023] [Revised: 10/19/2023] [Accepted: 11/11/2023] [Indexed: 11/29/2023]
Abstract
A surge in chikungunya was observed during 2020-21 in Pune district of Maharashtra, India. Whole genome sequencing and phylogenetic analysis of 21 samples/sequences revealed them as Indian ocean lineage of East Central South African genotype. Two distinct sequence clusters were found to circulate during 2020-21; one with E1:K211E and E2:V264A mutations while the other had E1:I317V mutation along with E1:K211E and E2: V264A mutations. The former, the predominant cluster (n = 18), clustered with chikungunya virus (CHIKV) strains of pre 2014 period while the latter (n = 3) clustered with 2016-2018 period Indian strains. Though E1: A226V was not detected in any of the 21 sequences, several unique mutations were detected in the strains which might have played key roles in the enhanced virus transmission during the period. The study highlights parallel evolution, introduction from the neighboring regions and cocirculation of two sequence clusters of CHIKV in Pune. The complete genome data can be useful to determine how the circulating strains differ from candidate vaccines and might help to predict the protective efficacy of chikungunya vaccine candidates.
Collapse
Affiliation(s)
- Kalichamy Alagarasu
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Jayashri Patil
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Santoshkumar Jadhav
- Bioinformatics and Data Management Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Deepika Chowdhury
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Minal Bote
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Madhura Punekar
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Ashwini More
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Mahadeo Kakade
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Rupali Bachal
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Yogesh Gurav
- Health Technology Assessment Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Sarah Cherian
- Bioinformatics and Data Management Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
| | - Deepti Parashar
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India
- Diagnostic Reagent Facility, ICMR-National Institute of Virology, Pune, Maharashtra, India
| |
Collapse
|
6
|
Hibiya K, Shinzato A, Iwata H, Kinjo T, Tateyama M, Yamamoto K, Fujita J. Effect of voluntary human mobility restrictions on vector-borne diseases during the COVID-19 pandemic in Japan: A descriptive epidemiological study using a national database (2016 to 2021). PLoS One 2023; 18:e0285107. [PMID: 37228070 DOI: 10.1371/journal.pone.0285107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 04/15/2023] [Indexed: 05/27/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic not only encouraged people to practice good hygiene but also caused behavioral inhibitions and resulted reduction in both endemic and imported infectious diseases. However, the changing patterns of vector-borne diseases under human mobility restrictions remain unclear. Hence, we aimed to investigate the impact of transborder and local mobility restrictions on vector-borne diseases through a descriptive epidemiological study. The analysis was conducted using data from the National Epidemiological Surveillance of Infectious Diseases system in Japan. We defined the pre-pandemic period as the period between the 1st week of 2016 to the 52nd week of 2019 and defined the pandemic period as from the 1st week of 2020 to the 52nd week of 2021, with the assumption that human mobility was limited throughout the pandemic period. This study addressed 24 diseases among notifiable vector borne diseases. Datasets were obtained from weekly reports from the National Epidemiological Surveillance of Infectious Diseases, and the incidence of each vector-borne disease was examined. Interrupted time series analysis was conducted on the epidemic curves for the two periods. Between the pre- and post-pandemic periods, the incidence of dengue fever and malaria significantly decreased, which may be related to limited human transboundary mobility (p = 0.003/0.002). The incidence of severe fever with thrombocytopenia syndrome, scrub typhus, and Japanese spotted fever did not show changes between the two periods or no association with human mobility. This study suggests that behavioral control may reduce the incidence of new mosquito-borne diseases from endemic areas but may not affect tick-borne disease epidemics within an endemic area.
Collapse
Affiliation(s)
- Kenji Hibiya
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus, Nishihsara, Japan
- Department of Pathological Diagnosis, University of the Ryukyus Hospital, Nishihara, Japan
| | - Akira Shinzato
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus, Nishihsara, Japan
| | - Hiroyoshi Iwata
- Center for Environmental and Health Sciences, Hokkaido University, Sapporo, Japan
| | - Takeshi Kinjo
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus, Nishihsara, Japan
| | - Masao Tateyama
- Ohama Dai-ichi Hospital, Omoto-kai Group, Naha City, Okinawa, Japan
| | - Kazuko Yamamoto
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus, Nishihsara, Japan
| | - Jiro Fujita
- Department of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus, Nishihsara, Japan
- Ohama Dai-ichi Hospital, Omoto-kai Group, Naha City, Okinawa, Japan
| |
Collapse
|
7
|
Sulistyawati S, Sukesi TW, Yuliansyah H, Khusna AN, Mulasari SA. Individual attentiveness in vector control should be strengthened during and after the COVID-19 pandemic. Front Public Health 2022; 10:1055509. [PMID: 36407980 PMCID: PMC9666478 DOI: 10.3389/fpubh.2022.1055509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/20/2022] [Indexed: 02/01/2023] Open
Affiliation(s)
- Sulistyawati Sulistyawati
- Faculty of Public Health, Universitas Ahmad Dahlan, Yogyakarta, Indonesia,*Correspondence: Sulistyawati Sulistyawati
| | - Tri Wahyuni Sukesi
- Faculty of Public Health, Universitas Ahmad Dahlan, Yogyakarta, Indonesia
| | - Herman Yuliansyah
- Department of Informatics, Faculty of Industrial Technology, Universitas Ahmad Dahlan, Yogyakarta, Indonesia
| | - Arfiani Nur Khusna
- Department of Informatics, Faculty of Industrial Technology, Universitas Ahmad Dahlan, Yogyakarta, Indonesia
| | | |
Collapse
|
8
|
Islam A, Cockcroft C, Elshazly S, Ahmed J, Joyce K, Mahfuz H, Islam T, Rashid H, Laher I. Coagulopathy of Dengue and COVID-19: Clinical Considerations. Trop Med Infect Dis 2022; 7:tropicalmed7090210. [PMID: 36136621 PMCID: PMC9500638 DOI: 10.3390/tropicalmed7090210] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 12/04/2022] Open
Abstract
Thrombocytopenia and platelet dysfunction commonly occur in both dengue and COVID-19 and are related to clinical outcomes. Coagulation and fibrinolytic pathways are activated during an acute dengue infection, and endothelial dysfunction is observed in severe dengue. On the other hand, COVID-19 is characterised by a high prevalence of thrombotic complications, where bleeding is rare and occurs only in advanced stages of critical illness; here thrombin is the central mediator that activates endothelial cells, and elicits a pro-inflammatory reaction followed by platelet aggregation. Serological cross-reactivity may occur between COVID-19 and dengue infection. An important management aspect of COVID-19-induced immunothrombosis associated with thrombocytopenia is anticoagulation with or without aspirin. In contrast, the use of aspirin, nonsteroidal anti-inflammatory drugs and anticoagulants is contraindicated in dengue. Mild to moderate dengue infections are treated with supportive therapy and paracetamol for fever. Severe infection such as dengue haemorrhagic fever and dengue shock syndrome often require escalation to higher levels of support in a critical care facility. The role of therapeutic platelet transfusion is equivocal and should not be routinely used in patients with dengue with thrombocytopaenia and mild bleeding. The use of prophylactic platelet transfusion in dengue fever has strained financial and healthcare systems in endemic areas, together with risks of transfusion-transmitted infections in low- and middle-income countries. There is a clear research gap in the management of dengue with significant bleeding.
Collapse
Affiliation(s)
- Amin Islam
- Department of Haematology, Mid & South Essex University Hospital NHS Foundation Trust, Prittlewell Chase, Westcliff-on-Sea SS0 0RY, UK
- Department of Haematology, Queen Mary University of London, Mile End Road, London E1 3NS, UK
- Correspondence:
| | - Christopher Cockcroft
- Department of Haematology, Mid & South Essex University Hospital NHS Foundation Trust, Prittlewell Chase, Westcliff-on-Sea SS0 0RY, UK
| | - Shereen Elshazly
- Department of Haematology, Mid & South Essex University Hospital NHS Foundation Trust, Prittlewell Chase, Westcliff-on-Sea SS0 0RY, UK
- Adult Haemato-Oncology Unit, Faculty of Medicine, Ainshams University, Cairo 11566, Egypt
| | - Javeed Ahmed
- Department of Microbiology and Virology, Mid & South Essex University Hospital NHS Foundation Trust, Westcliff-on-Sea SS0 0RY, UK
| | - Kevin Joyce
- Department of Haematology, Mid & South Essex University Hospital NHS Foundation Trust, Prittlewell Chase, Westcliff-on-Sea SS0 0RY, UK
| | - Huque Mahfuz
- Department of Haematology and Oncology, Combined Military Hospital, Dhaka 1206, Bangladesh
| | - Tasbirul Islam
- Department of Pulmonology and Critical Care Medicine, Indiana School of Medicine, Lafayette, IN 47907, USA
| | - Harunor Rashid
- National Centre for Immunisation Research and Surveillance, The Children’s Hospital at Westmead, Westmead, NSW 2145, Australia
- Sydney Institute for Infectious Diseases, The University of Sydney, Westmead, NSW 2145, Australia
| | - Ismail Laher
- Department of Anesthesiology, Pharmacology & Therapeutics, Faculty of Medicine, The University of British Colombia, Vancouver, BC V6T 1Z3, Canada
| |
Collapse
|