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Ould Lemrabott MA, Briolant S, Gomez N, Basco L, Ould Mohamed Salem Boukhary A. First report of kdr mutations in the voltage-gated sodium channel gene in the arbovirus vector, Aedes aegypti, from Nouakchott, Mauritania. Parasit Vectors 2023; 16:464. [PMID: 38115092 PMCID: PMC10731742 DOI: 10.1186/s13071-023-06066-8] [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: 06/07/2023] [Accepted: 11/20/2023] [Indexed: 12/21/2023] Open
Abstract
BACKGROUND Since 2014, dengue epidemics have occurred almost annually in Nouakchott, the capital city of Mauritania, coinciding with the recent establishment of Aedes aegypti, the primary vector of dengue, in the city. Anopheles arabiensis, the primary vector of malaria, is also abundant not only in Nouakchott but also in most areas of the country. Resistance to insecticides has been studied in An. arabiensis but not in Ae. aegypti in Mauritania. The objective of the present study was to establish the baseline data on the frequencies of knockdown resistance (kdr) mutations in the voltage-gated sodium channel (vgsc) gene in Ae. aegypti collected in Nouakchott to improve vector control. METHODS Resting Ae. aegypti mosquitoes were collected in 2017 and 2018 in Teyarett and Dar Naim districts in Nouakchott using a battery-powered aspirator. Polymerase chain reaction (PCR) and DNA sequencing were performed to detect the presence of five kdr mutations known to be associated with pyrethroid resistance: L982W, S989P, I1011M/G, V1016G/I, and F1534C. RESULTS A total of 100 female Ae. aegypti mosquitoes were identified among collected resting culicid fauna, of which 60% (60/100) were unfed, 12% (12/100) freshly blood-fed, and 28% (28/100) gravid. Among the mutations investigated in this study, 989P, 1016G, and 1534C were found to be widespread, with the frequencies of 0.43, 0.44, and 0.55, respectively. Mutations were not found in codons 982 and 1011. No other mutations were detected within the fragments analyzed in this study. Genotype distribution did not deviate from Hardy-Weinberg equilibrium. The most frequent co-occurring point mutation patterns among Ae. aegypti mosquitoes were the heterozygous individuals 989SP/1016VG/1534FC detected in 45.1% of mosquitoes. In addition, homozygous mutant 1534CC co-occurred simultaneously with homozygous wild type 989SS and 1016VV in 30.5% of mosquito specimens. Inversely, homozygous wild-type 1534FF co-occurred simultaneously with homozygous mutant 989PP and 1016GG in 19.5% of the mosquitoes. CONCLUSIONS To our knowledge, this is the first study reporting the presence of three point mutations in the vgsc gene of Ae. aegypti in Mauritania. The findings of the present study are alarming because they predict a high level of resistance to pyrethroid insecticides which are commonly used in vector control in the country. Therefore, further studies are urgently needed, in particular phenotypic characterization of insecticide resistance using the standardized test.
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Affiliation(s)
| | - Sébastien Briolant
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France.
- IHU-Méditerranée Infection, Marseille, France.
- Unité de Parasitologie Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées (IRBA), Marseille, France.
| | - Nicolas Gomez
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
- Unité de Parasitologie Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées (IRBA), Marseille, France
| | - Leonardo Basco
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Ali Ould Mohamed Salem Boukhary
- Université de Nouakchott, UR-GEMI, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania.
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France.
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El Ghassem A, Abdoullah B, Deida J, Ould Lemrabott MA, Ouldabdallahi Moukah M, Ould Ahmedou Salem MS, Briolant S, Basco LK, Ould Brahim K, Ould Mohamed Salem Boukhary A. Arthropod-Borne Viruses in Mauritania: A Literature Review. Pathogens 2023; 12:1370. [PMID: 38003834 PMCID: PMC10675338 DOI: 10.3390/pathogens12111370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
During the past four decades, recurrent outbreaks of various arthropod-borne viruses have been reported in Mauritania. This review aims to consolidate the current knowledge on the epidemiology of the major arboviruses circulating in Mauritania. Online databases including PubMed and Web of Science were used to retrieve relevant published studies. The results showed that numerous arboviral outbreaks of variable magnitude occurred in almost all 13 regions of Mauritania, with Rift Valley fever (RVF), Crimean-Congo hemorrhagic fever (CCHF), and dengue (DEN) being the most common infections. Other arboviruses causing yellow fever (YF), chikungunya (CHIK), o'nyong-nyong (ONN), Semliki Forest (SF), West Nile fever (WNF), Bagaza (BAG), Wesselsbron (WSL), and Ngari (NRI) diseases have also been found circulating in humans and/or livestock in Mauritania. The average case fatality rates of CCHF and RVF were 28.7% and 21.1%, respectively. RVF outbreaks have often occurred after unusually heavy rainfalls, while CCHF epidemics have mostly been reported during the dry season. The central and southeastern regions of the country have carried the highest burden of RVF and CCHF. Sheep, cattle, and camels are the main animal reservoirs for the RVF and CCHF viruses. Culex antennatus and Cx. poicilipes mosquitoes and Hyalomma dromedarii, H. rufipes, and Rhipicephalus everesti ticks are the main vectors of these viruses. DEN outbreaks occurred mainly in the urban settings, including in Nouakchott, the capital city, and Aedes aegypti is likely the main mosquito vector. Therefore, there is a need to implement an integrated management strategy for the prevention and control of arboviral diseases based on sensitizing the high-risk occupational groups, such as slaughterhouse workers, shepherds, and butchers for zoonotic diseases, reinforcing vector surveillance and control, introducing rapid point-of-care diagnosis of arboviruses in high-risk areas, and improving the capacities to respond rapidly when the first signs of disease outbreak are identified.
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Affiliation(s)
- Abdallahi El Ghassem
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott, Nouakchott BP 880, Mauritania; (A.E.G.); (B.A.); (J.D.); (M.A.O.L.); (M.O.M.); (M.S.O.A.S.); (K.O.B.)
| | - Bedia Abdoullah
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott, Nouakchott BP 880, Mauritania; (A.E.G.); (B.A.); (J.D.); (M.A.O.L.); (M.O.M.); (M.S.O.A.S.); (K.O.B.)
| | - Jemila Deida
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott, Nouakchott BP 880, Mauritania; (A.E.G.); (B.A.); (J.D.); (M.A.O.L.); (M.O.M.); (M.S.O.A.S.); (K.O.B.)
| | - Mohamed Aly Ould Lemrabott
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott, Nouakchott BP 880, Mauritania; (A.E.G.); (B.A.); (J.D.); (M.A.O.L.); (M.O.M.); (M.S.O.A.S.); (K.O.B.)
| | - Mohamed Ouldabdallahi Moukah
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott, Nouakchott BP 880, Mauritania; (A.E.G.); (B.A.); (J.D.); (M.A.O.L.); (M.O.M.); (M.S.O.A.S.); (K.O.B.)
| | - Mohamed Salem Ould Ahmedou Salem
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott, Nouakchott BP 880, Mauritania; (A.E.G.); (B.A.); (J.D.); (M.A.O.L.); (M.O.M.); (M.S.O.A.S.); (K.O.B.)
| | - Sébastien Briolant
- Unité de Parasitologie Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées (IRBA), 13005 Marseille, France;
- Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (AP-HM), Service de Santé des Armées (SSA), Vecteurs—Infections Tropicales et Méditerranéennes (VITROME), Aix Marseille Université, 13005 Marseille, France;
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, 13005 Marseille, France
| | - Leonardo K. Basco
- Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (AP-HM), Service de Santé des Armées (SSA), Vecteurs—Infections Tropicales et Méditerranéennes (VITROME), Aix Marseille Université, 13005 Marseille, France;
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, 13005 Marseille, France
| | - Khyarhoum Ould Brahim
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott, Nouakchott BP 880, Mauritania; (A.E.G.); (B.A.); (J.D.); (M.A.O.L.); (M.O.M.); (M.S.O.A.S.); (K.O.B.)
| | - Ali Ould Mohamed Salem Boukhary
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott, Nouakchott BP 880, Mauritania; (A.E.G.); (B.A.); (J.D.); (M.A.O.L.); (M.O.M.); (M.S.O.A.S.); (K.O.B.)
- Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (AP-HM), Service de Santé des Armées (SSA), Vecteurs—Infections Tropicales et Méditerranéennes (VITROME), Aix Marseille Université, 13005 Marseille, France;
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Abdoullah B, Durand GA, Basco LK, El Bara A, Bollahi MA, Bosio L, Geulen M, Briolant S, Boukhary AOMS. Seroprevalence of Alphaviruses ( Togaviridae) among Urban Population in Nouakchott, Mauritania, West Africa. Viruses 2023; 15:1588. [PMID: 37515274 PMCID: PMC10385508 DOI: 10.3390/v15071588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/13/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
The presence of alphaviruses, such as chikungunya virus (CHIKV), has never been reported in Mauritania. We assessed the seroprevalence of CHIKV among Nouakchott residents. A cross-sectional study involving 1300 non-febrile patients consulting at the Nouakchott hospital center was conducted between January and June 2021. The presence of anti-CHIKV IgG and neutralizing antibodies against CHIKV, O'nyong-nyong virus (ONNV), and Semliki Forest virus (SFV) was determined by an enzyme-linked immunosorbent assay (ELISA) and a serum neutralization test, respectively, and the associated risk factors were investigated. Of the 1300 study participants, serological evidence of previous exposure to CHIKV was observed in 37 individuals (2.8%). Sex, age, reported use of repellants, and bed net ownership and usage were not associated with CHIKV seropositivity. Our results showed the co-circulation of two other alphaviruses, ONNV and SFV, in Nouakchott in 30 (2.3%) individuals. This is the first study that documents the co-circulation of CHIKV, ONNV, and SFV in Mauritania, albeit at low prevalence. Surveillance and routine testing for alphaviruses and other arboviruses in symptomatic patients should be implemented in health facilities to assess the health burden associated with these viruses. Efforts should also be made to strengthen the vector control measures.
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Affiliation(s)
- Bedia Abdoullah
- Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, Nouakchott BP 5026, Mauritania
| | - Guillaume André Durand
- National Reference Center for Arboviruses, National Institute of Health and Medical Research (Inserm) and French Armed Forces Biomedical Research Institute (IRBA), 13005 Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), 13005 Marseille, France
| | - Leonardo K Basco
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, 13005 Marseille, France
- IHU-Méditerranée Infection, 13005 Marseille, France
| | - Ahmed El Bara
- Institut National de Recherche en Santé Publique, Nouakchott BP 695, Mauritania
| | | | - Laurent Bosio
- National Reference Center for Arboviruses, National Institute of Health and Medical Research (Inserm) and French Armed Forces Biomedical Research Institute (IRBA), 13005 Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), 13005 Marseille, France
| | - Manon Geulen
- National Reference Center for Arboviruses, National Institute of Health and Medical Research (Inserm) and French Armed Forces Biomedical Research Institute (IRBA), 13005 Marseille, France
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), 13005 Marseille, France
| | - Sébastien Briolant
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, 13005 Marseille, France
- IHU-Méditerranée Infection, 13005 Marseille, France
- Unité de Parasitologie Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées (IRBA), 13005 Marseille, France
| | - Ali Ould Mohamed Salem Boukhary
- Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, Nouakchott BP 5026, Mauritania
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Harbach RE, Wilkerson RC. The insupportable validity of mosquito subspecies (Diptera: Culicidae) and their exclusion from culicid classification. Zootaxa 2023; 5303:1-184. [PMID: 37518540 DOI: 10.11646/zootaxa.5303.1.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Indexed: 08/01/2023]
Abstract
Beginning about 80 years ago, the recognition of morphological varieties of mosquitoes was gradually replaced by the recognition of subspecies. As an examination of revisionary and detailed taxonomic studies of mosquitoes clearly shows, subspecies are untenable concepts which have been synonymized with nominotypical forms or recognized as distinct species. Thus, from our perspective, subspecies is not a functional or practical taxonomic rank. Consequently, in this study we critically assessed the taxonomic status of the 120 nominal taxa distinguished as subspecies before now to determine whether they should be recognized as separate species or synonymous names. As a result, 96 subspecies are formally elevated to specific rank, 22 are relegated to synonymy with nominotypical forms, one is considered a nomen dubium, one a species inquirenda and the names of four nominal species regarded as synonyms are revalidated. The subspecies and their new status are listed in a conspectus. The revalidated species include Anopheles argentinus (Brèthes, 1912), from synonymy with An. pseudopunctipennis Theobald, 1901c; An. peruvianus Tamayo, 1907, from synonymy with An. pseudopunctipennis as nomen dubium; Culex major Edwards, 1935, from synonymy with Cx. annulioris consimilis Newstead, 1907; and Trichoprosopon trichorryes (Dyar & Knab, 1907), from synonymy with Tr. compressum Lutz, 1905. Additionally, the type locality of Anopheles sergentii Theobald, 1907 is restricted to El Outaya, Biskra Province, Algeria. A complete list of species to be retained, added to or removed from the Encyclopedia of Life, with a few corrections, is provided.
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Affiliation(s)
- Ralph E Harbach
- Department of Science; Natural History Museum; Cromwell Road; London SW7 5BD; UK.
| | - Richard C Wilkerson
- Department of Entomology; National Museum of Natural History; Smithsonian Institution; Washington DC 20013; USA; Walter Reed Biosystematics Unit; Museum Support Center; Smithsonian Institution; Suitland; MD 20746; USA; One Health Branch; Walter Reed Army Institute of Research; Silver Spring; MD 20910; USA.
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El Moustapha I, Deida J, Dadina M, El Ghassem A, Begnoug M, Hamdinou M, Mint Lekweiry K, Ould Ahmedou Salem MS, Khalef Y, Semane A, Ould Brahim K, Briolant S, Bogreau H, Basco L, Ould Mohamed Salem Boukhary A. Changing epidemiology of Plasmodium vivax malaria in Nouakchott, Mauritania: a six-year (2015-2020) prospective study. Malar J 2023; 22:18. [PMID: 36650533 PMCID: PMC9843100 DOI: 10.1186/s12936-023-04451-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 01/10/2023] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Plasmodium vivax malaria is one of the major infectious diseases of public health concern in Nouakchott, the capital city of Mauritania and the biggest urban setting in the Sahara. The assessment of the current trends in malaria epidemiology is primordial in understanding the dynamics of its transmission and developing an effective control strategy. METHODS A 6 year (2015-2020) prospective study was carried out in Nouakchott. Febrile outpatients with a clinical suspicion of malaria presenting spontaneously at Teyarett Health Centre or the paediatric department of Mother and Children Hospital Centre were screened for malaria using a rapid diagnostic test, microscopic examination of Giemsa-stained blood films, and nested polymerase chain reaction. Data were analysed using Microsoft Excel and GraphPad Prism and InStat software. RESULTS Of 1760 febrile patients included in this study, 274 (15.5%) were malaria-positive by rapid diagnostic test, 256 (14.5%) were malaria-positive by microscopy, and 291 (16.5%) were malaria-positive by PCR. Plasmodium vivax accounted for 216 of 291 (74.2%) PCR-positive patients; 47 (16.1%) and 28 (9.6%) had P. falciparum monoinfection or P. vivax-P. falciparum mixed infection, respectively. During the study period, the annual prevalence of malaria declined from 29.2% in 2015 to 13.2% in 2019 and 2.1% in 2020 (P < 0.05). Malaria transmission was essentially seasonal, with a peak occurring soon after the rainy season (October-November), and P. vivax infections, but not P. falciparum infections, occurred at low levels during the rest of the year. The most affected subset of patient population was adult male white and black Moors. The decline in malaria prevalence was correlated with decreasing annual rainfall (r = 0.85; P = 0.03) and was also associated with better management of the potable water supply system. A large majority of included patients did not possess or did not use bed nets. CONCLUSIONS Control interventions based on prevention, diagnosis, and treatment should be reinforced in Nouakchott, and P. vivax-specific control measures, including chloroquine and 8-aminoquinolines (primaquine, tafenoquine) for treatment, should be considered to further improve the efficacy of interventions and aim for malaria elimination.
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Affiliation(s)
- Inejih El Moustapha
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania
| | - Jemila Deida
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania
| | - Mariem Dadina
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania
| | - Abdellahi El Ghassem
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania
| | - Mariem Begnoug
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania
| | - Mariem Hamdinou
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania
| | - Khadijetou Mint Lekweiry
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania ,Unité de Recherche Ressources Génétique et Environnement, Institut Supérieur d’Enseignement Technologique (ISET), Rosso, Mauritania
| | - Mohamed Salem Ould Ahmedou Salem
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania
| | - Yacoub Khalef
- Department of Pediatrics, Mother and Children Hospital Centre, Centre Hospitalier Mère et Enfant (CHME), Nouakchott, Mauritania
| | - Amal Semane
- Teyarett Health Centre (Centre de Santé de Teyarett), Nouakchott, Mauritania
| | - Khyarhoum Ould Brahim
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania
| | - Sébastien Briolant
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France ,grid.483853.10000 0004 0519 5986IHU-Méditerranée Infection, Marseille, France ,grid.418221.cUnité de Parasitologie Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées (IRBA), Marseille, France
| | - Hervé Bogreau
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France ,grid.483853.10000 0004 0519 5986IHU-Méditerranée Infection, Marseille, France ,grid.418221.cUnité de Parasitologie Entomologie, Département de Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées (IRBA), Marseille, France
| | - Leonardo Basco
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France ,grid.483853.10000 0004 0519 5986IHU-Méditerranée Infection, Marseille, France
| | - Ali Ould Mohamed Salem Boukhary
- grid.442613.60000 0000 8717 1355Unité de Recherche Génomes et Milieux (GEMI), Université de Nouakchott, Nouveau Campus Universitaire, BP 5026, Nouakchott, Mauritania ,grid.483853.10000 0004 0519 5986IHU-Méditerranée Infection, Marseille, France
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Lima LR, Bastos RS, Ferreira EFB, Leão RP, Araújo PHF, Pita SSDR, De Freitas HF, Espejo-Román JM, Dos Santos ELVS, Ramos RDS, Macêdo WJC, Santos CBR. Identification of Potential New Aedes aegypti Juvenile Hormone Inhibitors from N-Acyl Piperidine Derivatives: A Bioinformatics Approach. Int J Mol Sci 2022; 23:ijms23179927. [PMID: 36077329 PMCID: PMC9456062 DOI: 10.3390/ijms23179927] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/18/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
Aedes aegypti mosquitoes transmit several human pathogens that cause millions of deaths worldwide, mainly in Latin America. The indiscriminate use of insecticides has resulted in the development of species resistance to some such compounds. Piperidine, a natural alkaloid isolated from Piper nigrum, has been used as a hit compound due to its larvicidal activity against Aedes aegypti. In the present study, piperidine derivatives were studied through in silico methods: pharmacophoric evaluation (PharmaGist), pharmacophoric virtual screening (Pharmit), ADME/Tox prediction (Preadmet/Derek 10.0®), docking calculations (AutoDock 4.2) and molecular dynamics (MD) simulation on GROMACS-5.1.4. MP-416 and MP-073 molecules exhibiting ΔG binding (MMPBSA −265.95 ± 1.32 kJ/mol and −124.412 ± 1.08 kJ/mol, respectively) and comparable to holo (ΔG binding = −216.21 ± 0.97) and pyriproxyfen (a well-known larvicidal, ΔG binding= −435.95 ± 2.06 kJ/mol). Considering future in vivo assays, we elaborated the theoretical synthetic route and made predictions of the synthetic accessibility (SA) (SwissADME), lipophilicity and water solubility (SwissADME) of the promising compounds identified in the present study. Our in silico results show that MP-416 and MP-073 molecules could be potent insecticides against the Aedes aegypti mosquitoes.
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Affiliation(s)
- Lúcio R. Lima
- Graduate Program in Medicinal Chemistry and Molecular Modeling, Federal University of Pará, Belém 66075-110, PA, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
| | - Ruan S. Bastos
- Graduate Program in Medicinal Chemistry and Molecular Modeling, Federal University of Pará, Belém 66075-110, PA, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
| | - Elenilze F. B. Ferreira
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
- Laboratory of Organic Chemistry and Biochemistry, University of the State of Amapá, Macapá 68900-070, AP, Brazil
| | - Rozires P. Leão
- Graduate Program in Medicinal Chemistry and Molecular Modeling, Federal University of Pará, Belém 66075-110, PA, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
| | - Pedro H. F. Araújo
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
| | - Samuel S. da R. Pita
- Bioinformatics and Molecular Modeling Laboratory, Pharmacy College, Federal University of Bahia, Av. Barão de Jeremoabo, 147, Ondina, Salvador 40170-115, BA, Brazil
| | - Humberto F. De Freitas
- Bioinformatics and Molecular Modeling Laboratory, Pharmacy College, Federal University of Bahia, Av. Barão de Jeremoabo, 147, Ondina, Salvador 40170-115, BA, Brazil
- Health Department, State University of Feira de Santana, Feira de Santana 44036-900, BA, Brazil
| | - José M. Espejo-Román
- Department of Pharmaceutical and Organic Chemistry, Faculty of Pharmacy, Campus of Cartuja, University of Granada, 18071 Granada, Spain
| | - Edla L. V. S. Dos Santos
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
| | - Ryan da S. Ramos
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
| | - Williams J. C. Macêdo
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Rua João Pessoa, 121, Capanema 68700-030, PA, Brazil
| | - Cleydson B. R. Santos
- Graduate Program in Medicinal Chemistry and Molecular Modeling, Federal University of Pará, Belém 66075-110, PA, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil
- Correspondence:
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Review of the ecology and behaviour of Aedes aegypti and Aedes albopictus in Western Africa and implications for vector control. CURRENT RESEARCH IN PARASITOLOGY & VECTOR-BORNE DISEASES 2022; 2:100074. [PMID: 35726222 PMCID: PMC7612875 DOI: 10.1016/j.crpvbd.2021.100074] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Western Africa is vulnerable to arboviral disease transmission, having recently experienced major outbreaks of chikungunya, dengue, yellow fever and Zika. However, there have been relatively few studies on the natural history of the two major human arbovirus vectors in this region, Aedes aegypti and Ae. albopictus, potentially limiting the implementation of effective vector control. We systematically searched for and reviewed relevant studies on the behaviour and ecology of Ae. aegypti and Ae. albopictus in Western Africa, published over the last 40 years. We identified 73 relevant studies, over half of which were conducted in Nigeria, Senegal, or Côte d'Ivoire. Most studies investigated the ecology of Ae. aegypti and Ae. albopictus, exploring the impact of seasonality and land cover on mosquito populations and identifying aquatic habitats. This review highlights the adaptation of Ae. albopictus to urban environments and its invasive potential, and the year-round maintenance of Ae. aegypti populations in water storage containers. However, important gaps were identified in the literature on the behaviour of both species, particularly Ae. albopictus. In Western Africa, Ae. aegypti and Ae. albopictus appear to be mainly anthropophilic and to bite predominantly during the day, but further research is needed to confirm this to inform planning of effective vector control strategies. We discuss the public health implications of these findings and comment on the suitability of existing and novel options for control in Western Africa.
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8
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Fourié T, El Bara A, Dubot-Pérès A, Grard G, Briolant S, Basco LK, Ouldabdallahi Moukah M, Leparc-Goffart I. Emergence of dengue virus serotype 2 in Mauritania and molecular characterization of its circulation in West Africa. PLoS Negl Trop Dis 2021; 15:e0009829. [PMID: 34695119 PMCID: PMC8568173 DOI: 10.1371/journal.pntd.0009829] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 11/04/2021] [Accepted: 09/21/2021] [Indexed: 01/01/2023] Open
Abstract
The number of sporadic and epidemic dengue fever cases have reportedly been increasing in recent years in some West African countries, such as Senegal and Mali. The first epidemic of laboratory-confirmed dengue occurred in Nouakchott, the capital city of Mauritania situated in the Saharan desert, in 2014. On-site diagnosis of dengue fever was established using a rapid diagnostic test for dengue. In parallel, the presence of Aedes aegypti mosquitoes in the city was confirmed. The initial diagnosis was confirmed by RT-PCR, which showed that all samples from the 2014 dengue epidemic in Nouakchott were dengue virus serotype 2 (DENV-2). The whole genome or envelope protein gene of these strains, together with other DENV-2 strains obtained from travelers returning from West African countries to France between 2016 and 2019 (including two Mauritanian strains in 2017 and 2018), were sequenced. Phylogenetic analysis suggested a recent emergence of an epidemic strain from the cosmopolitan genotype belonging to West African cosmopolitan lineage II, which is genetically distinct from African sylvatic genotype. The origin of this DENV-2 lineage is still unknown, but our data seem to suggest a recent and rapid dispersion of the epidemic strain throughout the region. More complete genome sequences of West African DENV-2 are required for a better understanding of the dynamics of its circulation. Arboviral surveillance and outbreak forecasting are urgently needed in West Africa. In Africa, dengue viruses 1 to 4 are transmitted to primates by Aedes mosquitoes in a sylvatic cycle or an urban/epidemic cycle involving humans. Infection in humans may be asymptomatic or may range from mild flu-like illness to severe hemorrhagic fever. The dengue viruses have a pantropical distribution, mostly in urbanized areas where vectors have become well adapted. This report shows dengue can also emerge in desert areas, as seen for the first time in an outbreak in 2014 in Nouakchott, Mauritania, where climatic, environmental, and human behavioral changes favor the emergence of Aedes mosquitoes. Dengue virus 2 was found in multiple human samples collected during the outbreak. Genomic analysis of dengue virus 2 isolates from the Mauritanian outbreak and from infected travelers revealed the rapid emergence of a specific “West African epidemic strain” of the virus throughout West Africa during the last decade, which is distinct from other strains found elsewhere and from historical or sylvatic strains. More genomic data would help us understand the circulation of dengue virus in West Africa, to help forecast and mitigate outbreaks in this region.
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Affiliation(s)
- Toscane Fourié
- Unité des Virus Emergents (UVE), Aix Marseille Université - IRD 190—INSERM 1207, Marseille, France
- Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Ahmed El Bara
- Institut National de Recherche en Santé Publique, Nouakchott, Mauritania
| | - Audrey Dubot-Pérès
- Unité des Virus Emergents (UVE), Aix Marseille Université - IRD 190—INSERM 1207, Marseille, France
| | - Gilda Grard
- Unité des Virus Emergents (UVE), Aix Marseille Université - IRD 190—INSERM 1207, Marseille, France
- Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Sébastien Briolant
- Institut de Recherche Biomédicale des Armées, Marseille, France
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
- IHU—Méditerranée Infection, Marseille, France
| | - Leonardo K. Basco
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
- IHU—Méditerranée Infection, Marseille, France
| | - Mohamed Ouldabdallahi Moukah
- Unité de Recherche Génomes et Milieux, Faculté des Sciences et Techniques, Université de Nouakchott Al-Aasriya, Nouakchott, Mauritania
- Initiative mauritanienne pour la lutte contre les maladies endémiques “MEDCINGO” Nouakchott, Mauritania
| | - Isabelle Leparc-Goffart
- Unité des Virus Emergents (UVE), Aix Marseille Université - IRD 190—INSERM 1207, Marseille, France
- Institut de Recherche Biomédicale des Armées, Marseille, France
- * E-mail:
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9
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Ndiaye E, Ould Mohamed Salem Boukhary A, Diallo M, Diallo D, Labbo R, Boussès P, Le Goff G, Robert V. [Mosquitoes, Distribution and Specific Richness in Eight Countries of Africa: Cape Verde, Mauritania, Senegal, Gambia, Mali, Burkina Faso, Niger and Chad]. MEDECINE TROPICALE ET SANTE INTERNATIONALE 2021; 1:mtsibulletin.2021.109. [PMID: 35586589 PMCID: PMC9022770 DOI: 10.48327/mtsibulletin.2021.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/25/2021] [Indexed: 11/14/2022]
Abstract
Mosquitoes (Diptera, Culicidae) form a family of insects of considerable public health importance. Mention of their presence/absence was tackled in the literature and by specialized websites for eight African countries: Cape Verde, Mauritania, Senegal, Gambia, Mali, Burkina Faso, Niger and Chad. In total, 216 species have been recorded belonging to 13 genera: Anopheles (48 species), Aedeomyia (2), Aedes (62), Coquillettidia (6), Culex (54), Culiseta (1), Eretmapodites (7), Ficalbia (3), Lutzia (1), Mansonia (2), Mimomyia (7), Toxorhynchites (4) and Uranotaenia (19). The presence of these species in the study area is certain except for three species whose presence is doubtful. This specific richness represents 6% of the world's richness. The countries with the highest specific richness are Burkina Faso (162 species), Senegal (143) and Mali (110); the country with the lowest richness is Cape Verde (11). This richness is lower in the north in hyper-arid climate and higher in the south in sub-humid climate. Chad is the least well inventoried country. All species are considered native, with the exception of Ae. (Stegomyia ) albopictus (the Asian tiger mosquito) introduced in 2016 into Mali and possibly Ae. (Ochlerotatus ) caspius into Mauritania and Ae. (Stg. ) aegypti introduced into Nouakchott, Mauritania. This synthesis of the knowledge may be useful for vector control, public health, and future research.
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Affiliation(s)
- E.H. Ndiaye
- Pôle de zoologie médicale, Institut Pasteur de Dakar, B.P. 220, Dakar, Sénégal
| | - A. Ould Mohamed Salem Boukhary
- Université de Nouakchott Al-Aasriya, Unité de recherche génomes et milieux (jeune équipe associée à l'IRD), Laboratoire environnement, santé et société LE2S, BP 880, Nouakchott, Mauritanie; Aix Marseille Univ., IRD, AP-HM, SSA, VITROME, Marseille, France
| | - M. Diallo
- Pôle de zoologie médicale, Institut Pasteur de Dakar, B.P. 220, Dakar, Sénégal
| | - D. Diallo
- Pôle de zoologie médicale, Institut Pasteur de Dakar, B.P. 220, Dakar, Sénégal
| | - R. Labbo
- Centre de recherche médicale et sanitaire (CERMES), BP 10887, Niamey, Niger
| | - P. Boussès
- Unité MIVEGEC, Université de Montpellier, IRD, CNRS, Montpellier, France
| | - G. Le Goff
- Unité MIVEGEC, Université de Montpellier, IRD, CNRS, Montpellier, France
| | - V. Robert
- Unité MIVEGEC, Université de Montpellier, IRD, CNRS, Montpellier, France,*
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Abdelkrim O, Samia B, Said Z, Souad L. Modeling and mapping the habitat suitability and the potential distribution of Arboviruses vectors in Morocco. Parasite 2021; 28:37. [PMID: 33861197 PMCID: PMC8051322 DOI: 10.1051/parasite/2021030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 03/13/2021] [Indexed: 12/14/2022] Open
Abstract
Mosquitoes transmit several agents of diseases and the presence of different species represents a threat to animal and public health. Aedes and Culex mosquitoes are of particular concern giving their potential vector competence for Arbovirus transmission. In Morocco, the lack of detailed information related to their spatial distribution raises major concerns and hampers effective vector surveillance and control. Using maximum entropy (Maxent) modeling, we generated prediction models for the potential distribution of Arboviruses vectors (Aedes aegypti, Ae. vexans, Ae. caspius, Ae. detritus, and Culex pipiens) in Morocco, under current climatic conditions. Also, we investigated the habitat suitability for the potential occurrence and establishment of Ae. albopictus and Ae. vittatus recorded only once in the country. Prediction models for these last two species were generated considering occurrence datasets from close countries of the Mediterranean Basin, where Ae. albopictus is well established, and from a worldwide database for the case of Ae. vittatus (model transferability). With the exception of Ae. vittatus, the results identify potential habitat suitability in Morocco for all mosquitos considered. Existing areas with maximum risk of establishment and high potential distribution were mainly located in the northwestern and central parts of Morocco. Our results essentially underline the assumption that Ae. albopictus, if not quickly controlled, might find suitable habitats and has the potential to become established, especially in the northwest of the country. These findings may help to better understand the potential distribution of each species and enhance surveillance efforts in areas identified as high risk.
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Affiliation(s)
- Outammassine Abdelkrim
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Laboratory of Microbiology and Virology, Department of Medical Biology, Faculty of Medicine and Pharmacy, Cadi Ayyad University PO Box 7010 40000 Marrakech Morocco
| | - Boussaa Samia
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ISPITS-Higher Institute of Nursing and Health Technology 40000 Marrakech Morocco
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Ecology and the Environment Laboratory L2E (URAC 32, CNRST ERACNERS 06), Faculty of Sciences Semlalia, Cadi Ayyad University 2390-40080 Marrakech Morocco
| | - Zouhair Said
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Laboratory of Microbiology and Virology, Department of Medical Biology, Faculty of Medicine and Pharmacy, Cadi Ayyad University PO Box 7010 40000 Marrakech Morocco
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Laboratory of Bacteriology–Virology, Avicienne Hospital Military 40000 Marrakech Morocco
| | - Loqman Souad
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Laboratory of Microbiology and Virology, Department of Medical Biology, Faculty of Medicine and Pharmacy, Cadi Ayyad University PO Box 7010 40000 Marrakech Morocco
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11
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Ould Lemrabott MA, Le Goff G, Kengne P, Ndiaye O, Costantini C, Mint Lekweiry K, Ould Ahmedou Salem MS, Robert V, Basco L, Simard F, Ould Mohamed Salem Boukhary A. First report of Anopheles (Cellia) multicolor during a study of tolerance to salinity of Anopheles arabiensis larvae in Nouakchott, Mauritania. Parasit Vectors 2020; 13:522. [PMID: 33066796 PMCID: PMC7566140 DOI: 10.1186/s13071-020-04400-y] [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: 07/23/2020] [Accepted: 10/09/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Anopheles multicolor is known to be present in the arid areas of Africa north of the Sahara Desert, especially in oases. To date, its presence in Mauritania has not been reported. Here, we present the first record of its presence in Nouakchott, the capital of Mauritania. The larvae of An. multicolor, together with those of An. arabiensis, the major malaria vector in the city, were found thriving in highly saline surface water collections. METHODS Entomological surveys were carried out during 2016-2017 in Nouakchott. Mosquito larval habitats were investigated through larval surveys while indoor resting culicid fauna were collected using hand-held aspirator. Physicochemical parameters of the larval habitats were measured on-site, at the time mosquitoes were collected. Larvae and pupae were reared to adults in the insectaries. Morphological and polymerase chain reaction (PCR)-based methods were used to identify newly emerged adults. Batches of fourth-instar larvae were used to assess salinity tolerance by exposing them to increasing concentrations of NaCl, and mortality was monitored throughout development. RESULTS Morphological and molecular results confirmed that the specimens were An. multicolor and An. arabiensis. Sequences of 24 An. multicolor adult mosquitoes showed 100% nucleotide identity with the published sequences of An. multicolor from Iran. The physicochemical analysis of the water from the two larval habitats revealed highly saline conditions, with NaCl content ranging between 16.8 and 28.9 g/l (i.e. between c.50-80% seawater). Anopheles multicolor and An. arabiensis fourth-instar larvae survival rates at 17.5 g/l NaCl were 86.5% and 75%, respectively. Anopheles arabiensis larvae showed variable levels of salt tolerance according to the larval habitat. Adult An. multicolor specimens were collected resting indoor at low frequency (0.7%) compared to the other culicid mosquitoes. CONCLUSIONS To the best of our knowledge, this paper is the first report of An. multicolor in Mauritania, extending the known distributional range of the species to the south, as well as to the west. Highly salt-tolerant populations of An. arabiensis and An. multicolor were observed. Because salt-water collections are widespread in Nouakchott, the relevance of these findings for the dynamics and epidemiology of malaria transmission needs to be assessed.
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Affiliation(s)
- Mohamed Aly Ould Lemrabott
- Laboratoire environnement, santé et société LE2S, Unité de recherche génomes et milieux (jeune équipe associée à l'IRD), Université de Nouakchott Al-Aasriya, BP 880, Nouakchott, Mauritania. .,MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France.
| | - Gilbert Le Goff
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France
| | - Pierre Kengne
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France.,CIRMF, Franceville, Gabon
| | - Ousmane Ndiaye
- Laboratoire environnement, santé et société LE2S, Unité de recherche génomes et milieux (jeune équipe associée à l'IRD), Université de Nouakchott Al-Aasriya, BP 880, Nouakchott, Mauritania
| | - Carlo Costantini
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France
| | - Khadijetou Mint Lekweiry
- Laboratoire environnement, santé et société LE2S, Unité de recherche génomes et milieux (jeune équipe associée à l'IRD), Université de Nouakchott Al-Aasriya, BP 880, Nouakchott, Mauritania
| | - Mohamed Salem Ould Ahmedou Salem
- Laboratoire environnement, santé et société LE2S, Unité de recherche génomes et milieux (jeune équipe associée à l'IRD), Université de Nouakchott Al-Aasriya, BP 880, Nouakchott, Mauritania
| | - Vincent Robert
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France
| | - Leonardo Basco
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Frédéric Simard
- MIVEGEC, IRD, CNRS, University of Montpellier, Montpellier, France
| | - Ali Ould Mohamed Salem Boukhary
- Laboratoire environnement, santé et société LE2S, Unité de recherche génomes et milieux (jeune équipe associée à l'IRD), Université de Nouakchott Al-Aasriya, BP 880, Nouakchott, Mauritania. .,Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France. .,IHU-Méditerranée Infection, Marseille, France.
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12
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Seck MC, Badiane AS, Thwing J, Moss D, Fall FB, Gomis JF, Deme AB, Diongue K, Sy M, Mbaye A, Ndiaye T, Gaye A, Ndiaye YD, Diallo MA, Ndiaye D, Rogier E. Serological Data Shows Low Levels of Chikungunya Exposure in Senegalese Nomadic Pastoralists. Pathogens 2019; 8:pathogens8030113. [PMID: 31357631 PMCID: PMC6789836 DOI: 10.3390/pathogens8030113] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/18/2019] [Accepted: 07/21/2019] [Indexed: 12/28/2022] Open
Abstract
The chikungunya virus (CHIKV) is spread by Aedes aegypti and Ae. albopictus mosquitos worldwide; infection can lead to disease including joint pain, fever, and rash, with some convalescent persons experiencing chronic symptoms. Historically, CHIKV transmission has occurred in Africa and Asia, but recent outbreaks have taken place in Europe, Indonesia, and the Americas. From September to October 2014, a survey was undertaken with nomadic pastoralists residing in the northeast departments of Senegal. Blood dried on filter paper (dried blood spots; DBS) were collected from 1465 participants of all ages, and assayed for Immunoglobulin G (IgG) antibodies against CHIKV E1 antigen by a bead-based multiplex assay. The overall seroprevalence of all participants to CHIKV E1 was 2.7%, with no persons under 10 years of age found to be antibody positive. Above 10 years of age, clear increases of seroprevalence and IgG levels were observed with increasing age; 7.6% of participants older than 50 years were found to be positive for anti-CHIKV IgG. Reported net ownership, net usage, and gender were all non-significant explanatory variables of seropositivity. These data show a low-level historical exposure of this pastoralist population to CHIKV, with no evidence of recent CHIKV transmission in the past decade.
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Affiliation(s)
- Mame Cheikh Seck
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal.
| | - Aida Sadikh Badiane
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Julie Thwing
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
- President's Malaria Initiative, Atlanta, GA 30303, USA
| | - Delynn Moss
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Fatou Ba Fall
- Senegal National Malaria Control Program, Dakar 999066, Senegal
| | - Jules Francois Gomis
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Awa Bineta Deme
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Khadim Diongue
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Mohamed Sy
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Aminata Mbaye
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Tolla Ndiaye
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Aminata Gaye
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Yaye Die Ndiaye
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Mamadou Alpha Diallo
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Daouda Ndiaye
- Department of Parasitology, Faculty of Medicine and Pharmacy, Cheikh Anta Diop University, Dakar 12500, Senegal
| | - Eric Rogier
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA.
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13
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Ramos RDS, Costa JDS, Silva RC, da Costa GV, Rodrigues ABL, Rabelo ÉDM, Souto RNP, Taft CA, Silva CHTDPD, Rosa JMC, Santos CBRD, Macêdo WJDC. Identification of Potential Inhibitors from Pyriproxyfen with Insecticidal Activity by Virtual Screening. Pharmaceuticals (Basel) 2019; 12:E20. [PMID: 30691028 PMCID: PMC6469432 DOI: 10.3390/ph12010020] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/17/2019] [Accepted: 01/19/2019] [Indexed: 01/15/2023] Open
Abstract
Aedes aegypti is the main vector of dengue fever transmission, yellow fever, Zika, and chikungunya in tropical and subtropical regions and it is considered to cause health risks to millions of people in the world. In this study, we search to obtain new molecules with insecticidal potential against Ae. aegypti via virtual screening. Pyriproxyfen was chosen as a template compound to search molecules in the database Zinc_Natural_Stock (ZNSt) with structural similarity using ROCS (rapid overlay of chemical structures) and EON (electrostatic similarity) software, and in the final search, the top 100 were selected. Subsequently, in silico pharmacokinetic and toxicological properties were determined resulting in a total of 14 molecules, and these were submitted to the PASS online server for the prediction of biological insecticide and acetylcholinesterase activities, and only two selected molecules followed for the molecular docking study to evaluate the binding free energy and interaction mode. After these procedures were performed, toxicity risk assessment such as LD50 values in mg/kg and toxicity class using the PROTOX online server, were undertaken. Molecule ZINC00001624 presented potential for inhibition for the acetylcholinesterase enzyme (insect and human) with a binding affinity value of -10.5 and -10.3 kcal/mol, respectively. The interaction with the juvenile hormone was -11.4 kcal/mol for the molecule ZINC00001021. Molecules ZINC00001021 and ZINC00001624 had excellent predictions in all the steps of the study and may be indicated as the most promising molecules resulting from the virtual screening of new insecticidal agents.
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Affiliation(s)
- Ryan da Silva Ramos
- Postgraduate Program in Biotechnology and Biodiversity-Network BIONORTE, Federal University of Amapá, Macapá, Amapá 68903-419, Brazil.
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Capanema, Pará 68700-030, Brazil.
| | - Josivan da Silva Costa
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Capanema, Pará 68700-030, Brazil.
| | - Rai Campos Silva
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
- Computational Laboratory of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo 14040-903, Brazil;.
| | - Glauber Vilhena da Costa
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
| | - Alex Bruno Lobato Rodrigues
- Postgraduate Program in Biotechnology and Biodiversity-Network BIONORTE, Federal University of Amapá, Macapá, Amapá 68903-419, Brazil.
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
| | - Érica de Menezes Rabelo
- Postgraduate Program in Biotechnology and Biodiversity-Network BIONORTE, Federal University of Amapá, Macapá, Amapá 68903-419, Brazil.
| | | | | | - Carlos Henrique Tomich de Paula da Silva
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Capanema, Pará 68700-030, Brazil.
- Computational Laboratory of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo 14040-903, Brazil;.
| | | | - Cleydson Breno Rodrigues Dos Santos
- Postgraduate Program in Biotechnology and Biodiversity-Network BIONORTE, Federal University of Amapá, Macapá, Amapá 68903-419, Brazil.
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
- Computational Laboratory of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo 14040-903, Brazil;.
| | - Williams Jorge da Cruz Macêdo
- Postgraduate Program in Biotechnology and Biodiversity-Network BIONORTE, Federal University of Amapá, Macapá, Amapá 68903-419, Brazil.
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Capanema, Pará 68700-030, Brazil.
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14
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Mint Mohamed Lemine A, Ould Lemrabott MA, Hasni Ebou M, Mint Lekweiry K, Ould Ahmedou Salem MS, Ould Brahim K, Ouldabdallahi Moukah M, Ould Bouraya IN, Brengues C, Trape JF, Basco L, Bogreau H, Simard F, Faye O, Ould Mohamed Salem Boukhary A. Mosquitoes (Diptera: Culicidae) in Mauritania: a review of their biodiversity, distribution and medical importance. Parasit Vectors 2017; 10:35. [PMID: 28103955 PMCID: PMC5248481 DOI: 10.1186/s13071-017-1978-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/10/2017] [Indexed: 11/30/2022] Open
Abstract
Although mosquitoes (Diptera: Culicidae) are important disease vectors, information on their biodiversity in Mauritania is scarce and very dispersed in the literature. Data from the scientific literature gathered in the country from 1948 to 2016 were collected and analyzed. Overall 51 culicid species comprising 17 Anopheles spp., 14 Aedes spp., 18 Culex spp. and two Mansonia spp. have been described in Mauritania among which Anopheles arabiensis, Aedes vexans, Culex poicilipes and Culex antennatus are of epidemiological significance. Anopheles arabiensis is widely distributed throughout the country and its geographic distribution has increased northwards in recent years, shifting its northern limit form 17°32′N in the 1960s to 18°47′N today. Its presence in the central region of Tagant highlights the great ecological plasticity of the species. Conversely, the distribution of Anopheles gambiae (s.s.) and Anopheles melas has shrunk compared to that of the 1960s. Anopheles rhodesiensis and An. d’thali are mainly confined in the mountainous areas (alt. 200–700 m), whereas Anopheles pharoensis is widely distributed in the Senegal River basin. Culex poicilipes and Cx. antenattus were naturally found infected with Rift valley fever virus in central and northern Mauritania following the Rift valley outbreaks of 1998 and 2012. Recently, Ae. aegypti emerged in Nouakchott and is probably responsible for dengue fever episodes of 2015. This paper provides a concise and up-to-date overview of the existing literature on mosquito species known to occur in Mauritania and highlights areas where future studies should fill a gap in knowledge about vector biodiversity. It aims to help ongoing and future research on mosquitoes particularly in the field of medical entomology to inform evidence-based decision-making for vector control and management strategies.
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Affiliation(s)
- Aichetou Mint Mohamed Lemine
- Unité de recherche Génomes et Milieux, Jeune Equipe Associée à l'IRD (RI3M), Université de Nouakchott Al-Aasriya, Faculté des Sciences et Techniques, Nouveau Campus Universitaire, Nouakchott, BP 5026, Mauritania.,Laboratoire d'Ecologie Vectorielle et Parasitaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar, Senegal
| | - Mohamed Aly Ould Lemrabott
- Unité de recherche Génomes et Milieux, Jeune Equipe Associée à l'IRD (RI3M), Université de Nouakchott Al-Aasriya, Faculté des Sciences et Techniques, Nouveau Campus Universitaire, Nouakchott, BP 5026, Mauritania
| | - Moina Hasni Ebou
- Unité de recherche Génomes et Milieux, Jeune Equipe Associée à l'IRD (RI3M), Université de Nouakchott Al-Aasriya, Faculté des Sciences et Techniques, Nouveau Campus Universitaire, Nouakchott, BP 5026, Mauritania
| | - Khadijetou Mint Lekweiry
- Unité de recherche Génomes et Milieux, Jeune Equipe Associée à l'IRD (RI3M), Université de Nouakchott Al-Aasriya, Faculté des Sciences et Techniques, Nouveau Campus Universitaire, Nouakchott, BP 5026, Mauritania
| | - Mohamed Salem Ould Ahmedou Salem
- Unité de recherche Génomes et Milieux, Jeune Equipe Associée à l'IRD (RI3M), Université de Nouakchott Al-Aasriya, Faculté des Sciences et Techniques, Nouveau Campus Universitaire, Nouakchott, BP 5026, Mauritania
| | - Khyarhoum Ould Brahim
- Unité de recherche Génomes et Milieux, Jeune Equipe Associée à l'IRD (RI3M), Université de Nouakchott Al-Aasriya, Faculté des Sciences et Techniques, Nouveau Campus Universitaire, Nouakchott, BP 5026, Mauritania
| | - Mohamed Ouldabdallahi Moukah
- Unité de recherche Génomes et Milieux, Jeune Equipe Associée à l'IRD (RI3M), Université de Nouakchott Al-Aasriya, Faculté des Sciences et Techniques, Nouveau Campus Universitaire, Nouakchott, BP 5026, Mauritania
| | | | - Cecile Brengues
- Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle (MIVEGEC), Unité Mixte de Recherche IRD224-CNRS5290-Université de Montpellier, Institut de Recherche pour le Développement (IRD), Montpellier, France
| | - Jean-François Trape
- Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle (MIVEGEC), Unité Mixte de Recherche IRD224-CNRS5290-Université de Montpellier, Institut de Recherche pour le Développement (IRD), Montpellier, France
| | - Leonardo Basco
- Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, Inserm 1095, Faculté de Médecine La Timone, Aix-Marseille Université, Marseille, 13385, France
| | - Hervé Bogreau
- Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, Inserm 1095, Faculté de Médecine La Timone, Aix-Marseille Université, Marseille, 13385, France.,Unité Parasitologie et Entomologie, Département des Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, Marseille, France
| | - Frédéric Simard
- Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle (MIVEGEC), Unité Mixte de Recherche IRD224-CNRS5290-Université de Montpellier, Institut de Recherche pour le Développement (IRD), Montpellier, France
| | - Ousmane Faye
- Laboratoire d'Ecologie Vectorielle et Parasitaire, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar, Senegal
| | - Ali Ould Mohamed Salem Boukhary
- Unité de recherche Génomes et Milieux, Jeune Equipe Associée à l'IRD (RI3M), Université de Nouakchott Al-Aasriya, Faculté des Sciences et Techniques, Nouveau Campus Universitaire, Nouakchott, BP 5026, Mauritania.
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