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Pereira NCL, Michalsky ÉM, Alonso C, Pinheiro LC, Lara-Silva FO, Lima NA, Nobi RCA, de Mello HES, Fortes-Dias CL, Dias ES. Survey of phlebotomine sand fly fauna in a public Zoo in Brazil: Species diversity, seasonality, and host variety. Vet Parasitol Reg Stud Reports 2023; 44:100917. [PMID: 37652636 DOI: 10.1016/j.vprsr.2023.100917] [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: 02/27/2023] [Revised: 07/22/2023] [Accepted: 08/01/2023] [Indexed: 09/02/2023]
Abstract
Leishmaniasis is a dynamic disease in which transmission conditions change due to environmental and human behavioral factors. Epidemiological analyses have shown modifications in the spread profile and growing urbanization of the disease, justifying the expansion of endemic areas and increasing number of cases in dogs and humans. In the city of Belo Horizonte, located in the southeastern state of Minas Gerais (Brazil), visceral leishmaniasis (VL) is endemic, with a typical urban transmission pattern, but with different regional prevalence. This study was conducted at the Zoo of the Foundation of Municipal Parks and Zoobotany of Belo Horizonte (FPMZB-BH), located in the Pampulha region, which is among the areas most severely affected by VL. This study aimed to determine the taxonomic diversity of native phlebotomine sand flies (Diptera: Psychodidae), identify climatic variables that potentially affect the phenology of these insects, and determine the blood meal sources for female phlebotomine sand flies. To achieve this, 10 mammal enclosures in the zoo were selected using the presence of possible leishmaniasis reservoirs as a selection criterion, and sampled using light traps between August 2019 and August 2021. A total of 6034 phlebotomine sand flies were collected, indicating nine species, with Lutzomyia longipalpis being the very abundant species (65.35% of the total). Of the 108 engorged phlebotomine collected females, seven samples (6.5%) were positive for blood meals from humans, marsupials, canids, and birds. Relative humidity and rainfall increased the phenology of phlebotomine sand flies, with population increases in the hottest and wettest months. The data obtained will provide guidelines for competent health agencies to implement vector control measures to reduce the risk of leishmaniasis transmission in the FPMZB-BH.
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Affiliation(s)
- Nathália Cristina Lima Pereira
- René Rachou Institute (IRR), Oswaldo Cruz Foundation, Av. Augusto de Lima, 1715, CEP 30190-002 Belo Horizonte, Minas Gerais, Brazil
| | - Érika Monteiro Michalsky
- René Rachou Institute (IRR), Oswaldo Cruz Foundation, Av. Augusto de Lima, 1715, CEP 30190-002 Belo Horizonte, Minas Gerais, Brazil
| | - Caroline Alonso
- René Rachou Institute (IRR), Oswaldo Cruz Foundation, Av. Augusto de Lima, 1715, CEP 30190-002 Belo Horizonte, Minas Gerais, Brazil
| | - Letícia Cavalari Pinheiro
- René Rachou Institute (IRR), Oswaldo Cruz Foundation, Av. Augusto de Lima, 1715, CEP 30190-002 Belo Horizonte, Minas Gerais, Brazil
| | - Fabiana Oliveira Lara-Silva
- René Rachou Institute (IRR), Oswaldo Cruz Foundation, Av. Augusto de Lima, 1715, CEP 30190-002 Belo Horizonte, Minas Gerais, Brazil
| | - Nathália Albergaria Lima
- René Rachou Institute (IRR), Oswaldo Cruz Foundation, Av. Augusto de Lima, 1715, CEP 30190-002 Belo Horizonte, Minas Gerais, Brazil
| | - Regina Celi Antunes Nobi
- Foundation of Municipal Parks and Zoobotany of Belo Horizonte, Av. Otacílio Negrão de Lima, 8000, CEP 31365-450 Belo Horizonte, Minas Gerais, Brazil
| | - Humberto Espírito Santo de Mello
- Foundation of Municipal Parks and Zoobotany of Belo Horizonte, Av. Otacílio Negrão de Lima, 8000, CEP 31365-450 Belo Horizonte, Minas Gerais, Brazil
| | - Consuelo Latorre Fortes-Dias
- Ezequiel Dias Foundation (FUNED), Rua Conde Pereira Carneiro 80, CEP 30550-010 Belo Horizonte, Minas Gerais, Brazil
| | - Edelberto Santos Dias
- René Rachou Institute (IRR), Oswaldo Cruz Foundation, Av. Augusto de Lima, 1715, CEP 30190-002 Belo Horizonte, Minas Gerais, Brazil.
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Talebzadeh F, Ghadipasha M, Gharehdaghi J, Raoofian R, Azam K, Koosha M, Oshaghi MA. Efficiency of mitochondrial genes and nuclear Alu elements in detecting human DNA in blood meals of Anopheles stephensi mosquitoes: a time-course study. Parasit Vectors 2023; 16:284. [PMID: 37580774 PMCID: PMC10426119 DOI: 10.1186/s13071-023-05884-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 07/14/2023] [Indexed: 08/16/2023] Open
Abstract
BACKGROUND The time required for PCR detection of DNA in human blood meals in vector mosquitoes may vary, depending on the molecular markers used, based on the size and copy number of the amplicons. Detailed knowledge of the blood-feeding behavior of mosquito populations in nature is an essential component for evaluating their vectorial capacity and for assessing the roles of individual vertebrates as potential hosts involved in the transmission of vector-borne diseases. METHODS Laboratory experiments were conducted to compare the time course of PCR detection of DNA in human blood meals from individual blood-fed Anopheles stephensi mosquitoes, using loci with different characteristics, including two mitochondrial DNA (mtDNA) genes, cytB (228 bp) and 16S ribosomal RNA (rRNA) (157 bp) and nuclear Alu-repeat elements (226 bp) at different time points after the blood meal. RESULTS Human DNA was detectable up to 84-120 h post-blood-feeding, depending on the length and copy number of the loci. Our results suggest that 16S rRNA and Alu-repeat markers can be successfully recovered from human DNA up to 5 days post-blood-meal. The 16S rDNA and Alu-repeat loci have a significantly (P = 0.008) slower decline rate than the cytB locus. Median detection periods (T50) for the amplicons were 117, 113 and 86.4 h for Alu-repeat, 16S rDNA and cytB, respectively, suggesting an inverse linear relationship between amplicon size/copy number and digestion time. CONCLUSION This comparative study shows that the Alu-repeat locus is the most efficient marker for time-course identification of human DNA from blood meals in female mosquitoes. It is also a promising tool for determining the anthropophilic index (AI) or human blood index (HBI), i.e. the proportion of blood meals from humans, which is often reported as a relative measure of anthropophagy of different mosquito vectors, and hence a measure of the vector competence of mosquito species collected in the field.
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Affiliation(s)
- Fahimeh Talebzadeh
- Department of Vector Biology and Control of Diseases, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Masoud Ghadipasha
- Legal Medicine Research Center, Legal Medicine Organization, Tehran, Iran
| | - Jaber Gharehdaghi
- Legal Medicine Research Center, Legal Medicine Organization, Tehran, Iran
| | - Reza Raoofian
- Legal Medicine Research Center, Legal Medicine Organization, Tehran, Iran
| | - Kamal Azam
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mona Koosha
- Department of Vector Biology and Control of Diseases, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Oshaghi
- Department of Vector Biology and Control of Diseases, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
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Vadmal GM, Glidden CK, Han BA, Carvalho BM, Castellanos AA, Mordecai EA. Data-driven predictions of potential Leishmania vectors in the Americas. PLoS Negl Trop Dis 2023; 17:e0010749. [PMID: 36809249 PMCID: PMC9983874 DOI: 10.1371/journal.pntd.0010749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 03/03/2023] [Accepted: 01/24/2023] [Indexed: 02/23/2023] Open
Abstract
The incidence of vector-borne diseases is rising as deforestation, climate change, and globalization bring humans in contact with arthropods that can transmit pathogens. In particular, incidence of American Cutaneous Leishmaniasis (ACL), a disease caused by parasites transmitted by sandflies, is increasing as previously intact habitats are cleared for agriculture and urban areas, potentially bringing people into contact with vectors and reservoir hosts. Previous evidence has identified dozens of sandfly species that have been infected with and/or transmit Leishmania parasites. However, there is an incomplete understanding of which sandfly species transmit the parasite, complicating efforts to limit disease spread. Here, we apply machine learning models (boosted regression trees) to leverage biological and geographical traits of known sandfly vectors to predict potential vectors. Additionally, we generate trait profiles of confirmed vectors and identify important factors in transmission. Our model performed well with an average out of sample accuracy of 86%. The models predict that synanthropic sandflies living in areas with greater canopy height, less human modification, and within an optimal range of rainfall are more likely to be Leishmania vectors. We also observed that generalist sandflies that are able to inhabit many different ecoregions are more likely to transmit the parasites. Our results suggest that Psychodopygus amazonensis and Nyssomia antunesi are unidentified potential vectors, and should be the focus of sampling and research efforts. Overall, we found that our machine learning approach provides valuable information for Leishmania surveillance and management in an otherwise complex and data sparse system.
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Affiliation(s)
- Gowri M. Vadmal
- Department of Biology, Stanford University, Stanford, California, United States of America
| | - Caroline K. Glidden
- Department of Biology, Stanford University, Stanford, California, United States of America
| | - Barbara A. Han
- Cary Institute of Ecosystem Studies, Millbrook, New York, United States of America
| | - Bruno M. Carvalho
- Climate and Health Program, Barcelona Institute for Global Health, Barcelona, Spain
| | | | - Erin A. Mordecai
- Department of Biology, Stanford University, Stanford, California, United States of America
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Lozano-Sardaneta YN, Jiménez-Girón EI, Rodríguez-Rojas JJ, Sánchez-Montes S, Álvarez-Castillo L, Sánchez-Cordero V, Becker I. Species diversity and blood meal sources of phlebotomine sand flies (Diptera: Psychodidae) from Los Tuxtlas, Veracruz, Mexico. Acta Trop 2021; 216:105831. [PMID: 33465351 DOI: 10.1016/j.actatropica.2021.105831] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 01/04/2021] [Accepted: 01/06/2021] [Indexed: 01/19/2023]
Abstract
Phlebotomine sand flies can transmit several species of the genus Leishmania, that cause leishmaniasis, a serious neglected tropical disease worldwide. Although Mexico is an endemic country for the disease, studies on the biology, ecology, and the identification of blood meal sources of phlebotomine sand flies in some states remain unexplored. For this reason, this study aimed to evaluate the species diversity of sand flies, and identify their blood meal sources in the Biosphere Reserve Los Tuxtlas, Veracruz, an area with a high prevalence of Leishmania infantum. The cumulative sampling effort of sand flies covered 300 trap-nights between March 2011 and May 2013. For estimating species diversity, we calculated the species richness (q = 0), the diversity of the species (q = 1) and the dominant species (q = 2). To identify the blood meal sources, we amplified and sequenced a fragment of ≈400 bp of the vertebrate Cytb gene. A total of 951 specimens belonging to 15 species were collected. Psathyromyia aclydifera and Psychodopygus panamensis were the most abundant species. We were able to identify seven terrestrial vertebrate species, among which human beings were the most common source of the blood meal. In this study, relevant information on the structure of sand fly populations and their blood meal sources was obtained, providing basic and important information about the interactions between sand flies, hosts and Leishmania species.
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Lozano-Sardaneta YN, Sánchez-Montes S, Sánchez-Cordero V, Becker I, Paternina LE. Molecular detection of Leishmania infantum in sand flies (Diptera: Psychodidae: Phlebotominae) from Veracruz, Mexico. Acta Trop 2020; 207:105492. [PMID: 32298655 DOI: 10.1016/j.actatropica.2020.105492] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/27/2020] [Accepted: 04/06/2020] [Indexed: 12/20/2022]
Abstract
Phlebotomine sand flies are vectors of Leishmania parasites causing different clinical forms of leishmaniases that represent a serious emerging public health problem worldwide. Mexico harbours a large diversity of sand flies, yet only six species have been considered suspected vectors of Leishmania. The disease has been recorded in 25 states, where the State of Veracruz has recorded the highest number of cases with leishmaniases, although no systematic or epidemiological surveillance studies of Leishmania vectors have been carried out in the region. For that reason, the aim of this study was to perform the molecular detection of Leishmania DNA in phlebotomine sand flies collected from a humid tropical region in Veracruz. We confirmed the presence of Leishmania DNA in eight sand fly species. Sand flies with the highest infection were Psathyromyia aclydifera and Pychodopygus panamensis. This is also the first report of Leishmania DNA in Psathyromyia aclydifera, Psathyromyia carpenteri, Dampfomyia beltrani and Brumptomyia mesai. Our findings highlight the importance of entomological surveys and epidemiological studies, since they enable to determine whether sand fly species may be potential Leishmania vectors in a given area of the Mexico, as transmission dynamics can vary in the different regions.
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Affiliation(s)
- Yokomi N Lozano-Sardaneta
- Centro de Medicina Tropical, Unidad de Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 06720, México
| | - Sokani Sánchez-Montes
- Centro de Medicina Tropical, Unidad de Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 06720, México
| | - Víctor Sánchez-Cordero
- Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad de México 04510, México
| | - Ingeborg Becker
- Centro de Medicina Tropical, Unidad de Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 06720, México.
| | - Luís E Paternina
- Grupo Investigaciones Biomédicas, Universidad de Sucre, Carrera 14 No. 16B-32 (CP 700003), Sincelejo, Sucre, Colombia.
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Yared S, Gebresilassie A, Abbasi I, Aklilu E, Kirstein OD, Balkew M, Brown AS, Clouse RM, Warburg A, Hailu A, Gebre-Michael T. A molecular analysis of sand fly blood meals in a visceral leishmaniasis endemic region of northwestern Ethiopia reveals a complex host-vector system. Heliyon 2019; 5:e02132. [PMID: 31384683 PMCID: PMC6661399 DOI: 10.1016/j.heliyon.2019.e02132] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 05/01/2019] [Accepted: 07/18/2019] [Indexed: 11/04/2022] Open
Abstract
Background Visceral leishmaniasis (VL, or “kala-azar”) is a major cause of disability and death, especially in East Africa. Its vectors, sand flies (Diptera: Psychodidae: Phlebotominae), are poorly controlled and guarded against in these regions, owing in part to a lack of understanding about their feeding behavior. Methods A total of 746 freshly fed female sand flies were collected in five population centers in Kafta Humera (northwestern Ethiopia), where VL is endemic. Flies were collected from habitats that ranged from inside houses to open fields, using light traps and sticky traps. Sources of sand fly blood meals were identified using enzyme-linked immunosorbent assays (ELISA) and DNA amplification with reverse-line blot analysis (PCR-RLB); 632 specimens were screened using ELISA, 408 of which had identifiable blood meals, and 114 were screened using PCR-RLB, 53 of which yielded identifications. Fly species determinations were based on morphology, and those specimens subjected to PCR-RLB were also screened for Leishmania parasites using conventional PCR to amplify the nuclear marker ITS1 (internal transcribed spacer 1) with Leishmania-specific primers. Results More than three-fourths of all sand flies collected were Phlebotomus orientalis, and the remaining portion was comprised of nine other species. Nearly two-thirds of P. orientalis specimens were collected at village peripheries. The most common blood source for all flies was donkey (33.9% of all identifications), followed by cow (24.2%), human (17.6%), dog (11.8%), and goat or sheep (8.6%); mixtures of blood meals from different sources were found in 28.2% of all flies screened. Unidentified blood meals, presumably from wildlife, not domestic animals, were significantly higher in farm fields. Leishmania parasites were not detected in any of the 114 flies screened, not surprising given an expected infection rate of 1–5 out of 1,000. Meals that included a mixture of human and cow blood were significantly more frequent relative to all cow meals than human blood meals were to non-cow meals, suggesting a zoopotentiative interaction between cows and humans in this system. Conclusions Habitat and host preferences of sand fly vectors in Kafta Humera confirmed the finding of previous reports that the main vector in the region, Phlebotomus orientalis, is a highly opportunistic feeder that prefers large animals and is most commonly found at village peripheries. These results were similar to those of a previous study conducted in a nearby region (Tahtay Adiabo), except for the role of cattle on the prevalence of human blood meals. Preliminary examinations of blood meal data from different settings point to the need for additional surveys and field experiments to understand the role of livestock on biting risks.
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Affiliation(s)
- Solomon Yared
- Department of Biology, Jigjiga University, Jigjiga, Ethiopia
| | - Araya Gebresilassie
- Department of Zoological Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Ibrahim Abbasi
- The Kuvin Center for the Study of Infectious and Tropical Diseases, Institute for Medical Research, The Hebrew University, Israel
| | - Essayas Aklilu
- Department of Biology, Mada Walabu University, Bale-Robe, Ethiopia
| | - Oscar D Kirstein
- The Kuvin Center for the Study of Infectious and Tropical Diseases, Institute for Medical Research, The Hebrew University, Israel
| | - Meshesha Balkew
- President's Malaria Initiative (PMI) Vector Link Project, Ethiopia
| | - Adam S Brown
- Harvard University, Department of Biomedical Informatics, Boston, MA, United States
| | - Ronald M Clouse
- American Museum of Natural History, New York, NY, United States
| | - Alon Warburg
- The Kuvin Center for the Study of Infectious and Tropical Diseases, Institute for Medical Research, The Hebrew University, Israel
| | - Asrat Hailu
- Department of Microbiology, Immunology & Parasitology, School of Medicine; Addis Ababa University, Addis Ababa, Ethiopia
| | - Teshome Gebre-Michael
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
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Benitez ADN, Martins FDC, Mareze M, Nino BDSL, Caldart ET, Ferreira FP, Mitsuka-Breganó R, Freire RL, Galhardo JA, Martins CM, Biondo AW, Navarro IT. Spatial and simultaneous seroepidemiology of anti-Leishmania spp. antibodies in dog owners and their dogs from randomly selected households in a major city of southern Brazil. Prev Vet Med 2018; 154:47-53. [PMID: 29685444 DOI: 10.1016/j.prevetmed.2018.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 02/22/2018] [Accepted: 02/22/2018] [Indexed: 02/01/2023]
Abstract
Although leishmaniasis has been described as a classic example of a zoonosis requiring a comprehensive approach for control, to date, no study has been conducted on the spatial distribution of simultaneous Leishmania spp. seroprevalence in dog owners and dogs from randomly selected households in urban settings. Accordingly, the present study aimed to simultaneously identify the seroprevalence, spatial distribution and associated factors of infection with Leishmania spp. in dog owners and their dogs in the city of Londrina, a county seat in southern Brazil with a population of half a million people and ranked 18th in population and 145th in the human development index (HDI) out of 5570 Brazilian cities. Overall, 564 households were surveyed and included 597 homeowners and their 729 dogs. Anti-Leishmania spp. antibodies were detected by ELISA in 9/597 (1.50%) dog owners and in 32/729 (4.38%) dogs, with significantly higher prevalence (p = 0.0042) in dogs. Spatial analysis revealed associations between seropositive dogs and households located up to 500 m from the local railway. No clusters were found for either owner or dog case distributions. In summary, the seroepidemiological and spatial results collectively show a lack of association of the factors for infection, and the results demonstrated higher exposure for dogs than their owners. However, railway areas may provide favorable conditions for the maintenance of infected phlebotomines, thereby causing infection in nearby domiciled dogs. In such an urban scenario, local sanitary barriers should be focused on the terrestrial routes of people and surrounding areas, particularly railways, via continuous vector surveillance and identification of phlebotomines infected by Leishmania spp.
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Affiliation(s)
| | | | - Marcelle Mareze
- Laboratory of Zoonoses and Public Health, Londrina State University, Londrina, PR, 86057-970, Brazil.
| | | | - Eloiza Teles Caldart
- Laboratory of Zoonoses and Public Health, Londrina State University, Londrina, PR, 86057-970, Brazil.
| | - Fernanda Pinto Ferreira
- Laboratory of Zoonoses and Public Health, Londrina State University, Londrina, PR, 86057-970, Brazil.
| | - Regina Mitsuka-Breganó
- Department of Preventive Veterinary Medicine, Londrina State University, Londrina, PR, 86057-970, Brazil.
| | - Roberta Lemos Freire
- Department of Preventive Veterinary Medicine, Londrina State University, Londrina, PR, 86057-970, Brazil.
| | - Juliana Arena Galhardo
- School of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, 79070-900, Brazil.
| | - Camila Marinelli Martins
- Department of Preventive Veterinary Medicine, University of São Paulo, São Paulo, SP, 05508-270, Brazil.
| | - Alexander Welker Biondo
- Department of Veterinary Medicine, Federal University of Parana, Curitiba, PR, 80035-050, Brazil.
| | - Italmar Teodorico Navarro
- Department of Preventive Veterinary Medicine, Londrina State University, Londrina, PR, 86057-970, Brazil.
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Figueiredo HRD, Santos MFDC, Casaril AE, Infran JODM, Ribeiro LM, Fernandes CEDS, Oliveira AGD. SAND FLIES (DIPTERA: PSYCHODIDAE) IN AN ENDEMIC AREA OF LEISHMANIASIS IN AQUIDAUANA MUNICIPALITY, PANTANAL OF MATO GROSSO DO SUL , BRAZIL. Rev Inst Med Trop Sao Paulo 2016; 58:87. [PMID: 27982353 PMCID: PMC5147717 DOI: 10.1590/s1678-9946201658087] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 07/25/2016] [Indexed: 11/30/2022] Open
Abstract
The Aquidauana municipality is considered an endemic area of leishmaniasis and an important tourist site in Mato Grosso do Sul State. The aim of this study was to investigate the sand fly fauna in the city of Aquidauana. Captures were carried out twice a month, from April 2012 to March 2014 with automatic light traps and active aspiration, in the peridomicile and domicile of six residences. A total of 9,338 specimens were collected, 3,179 and 6,159 using light traps and active aspiration, respectively. The fauna consisted of: Brumptomyia brumpti, Evandromyia aldafalcaoae, Ev. evandroi, Ev. lenti, Ev. orcyi, Ev. sallesi, Ev. termitophila, Ev. walkeri, Lutzomyia longipalpis and Psathyromyia bigeniculata. The most abundant species captured was Lutzomyia longipalpis, present in all the ecotopes, predominantly in peridomicile areas, and mainly males. Leishmania DNA was not detected in the insects. It was observed the abundance of the sand fly fauna in the region, as well as the high frequency of Lu. longipalpis, the main vector of L. infantum. The results of this study show the need to increase the monitoring and more effective control measures. It is noteworthy that the studied region presents several activities related to tourism and recreation, increasing the risk of transmission of leishmaniasis to this particular human population.
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Affiliation(s)
- Helen Rezende de Figueiredo
- Universidade Federal de Mato Grosso do Sul, Programa de Pós-graduação em Doenças Infecciosas e Parasitárias, Faculdade de Medicina Dr Hélio Mandetta, Cidade Universitária s/n, 79070-900 Campo Grande, MS, Brazil. E-mails: ; ;
| | - Mirella Ferreira da Cunha Santos
- Universidade Estadual de Mato Grosso do Sul, Rua dos Dentistas, 500, Bairro Arnaldo Estevão de Figueiredo, 79043-250, Campo Grande, MS, Brazil. E-mail:
| | - Aline Etelvina Casaril
- Universidade Federal de Mato Grosso do Sul, Programa de Pós-graduação em Doenças Infecciosas e Parasitárias, Faculdade de Medicina Dr Hélio Mandetta, Cidade Universitária s/n, 79070-900 Campo Grande, MS, Brazil. E-mails: ; ;
- Universidade Federal de Mato Grosso do Sul, Laboratório de Parasitologia Humana, Centro de Ciências Biológicas e da Saúde, Cidade Universitária s/n, 79070-900 Campo Grande, MS, Brazil. E-mail: ; ,
| | - Jucelei Oliveira de Moura Infran
- Universidade Federal de Mato Grosso do Sul, Laboratório de Parasitologia Humana, Centro de Ciências Biológicas e da Saúde, Cidade Universitária s/n, 79070-900 Campo Grande, MS, Brazil. E-mail: ; ,
| | - Leticia Moraes Ribeiro
- Universidade Federal de Mato Grosso do Sul, Laboratório de Parasitologia Humana, Centro de Ciências Biológicas e da Saúde, Cidade Universitária s/n, 79070-900 Campo Grande, MS, Brazil. E-mail: ; ,
| | - Carlos Eurico Dos Santos Fernandes
- Universidade Federal de Mato Grosso do Sul, Laboratório de Patologia, Centro de Ciências Biológicas e da Saúde, Cidade Universitária s/n, 79070-900 Campo Grande, MS, Brazil. E-mail:
| | - Alessandra Gutierrez de Oliveira
- Universidade Federal de Mato Grosso do Sul, Programa de Pós-graduação em Doenças Infecciosas e Parasitárias, Faculdade de Medicina Dr Hélio Mandetta, Cidade Universitária s/n, 79070-900 Campo Grande, MS, Brazil. E-mails: ; ;
- Universidade Federal de Mato Grosso do Sul, Laboratório de Parasitologia Humana, Centro de Ciências Biológicas e da Saúde, Cidade Universitária s/n, 79070-900 Campo Grande, MS, Brazil. E-mail: ; ,
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Alcântara LRDS, Demarchi IG, Aristides SMA. EVOLUTION OF AMERICAN TEGUMENTARY LEISHMANIASIS CASES REPORTED IN PARANÁ STATE, BRAZIL. Rev Inst Med Trop Sao Paulo 2016; 58:67. [PMID: 27680172 PMCID: PMC5048638 DOI: 10.1590/s1678-9946201658067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 04/09/2016] [Indexed: 11/22/2022] Open
Abstract
Leishmaniases are infectious diseases caused by protozoa of the genus
Leishmania. They are widely distributed worldwide and endemic in
88 countries in four continents. The present study analyzed the reported cases of
American Tegumentary Leishmaniasis (ATL) in Paraná State (Brazil)
from January 2007 to December 2013. The data were grouped according to Regional
Health (RH) districts and macroregions, which allowed visualization of the reality in
each region in the state. A total of 2,879 ATL cases were reported and distributed
among the 22 RH districts, with an average detection rate of 3.9 cases per 100,000
inhabitants. The northwestern region accounted for 50.1% of the total cases, and the
northern region accounted for 26.0-76.1% of the reported cases. The 6th RH
district did not report any cases. The 7th, 9th, and
18th RH districts had a higher cure rate (> 80%), and lower cure
rates were found in the 1st, 4th, and 12th RH
districts. Reported unfavorable outcomes included treatment abandonment and death.
Overall cure rates are based on the entire country, and unfavorable outcomes require
greater attention of managers and health professionals to meet the goals of the
Brazilian Ministry of Health.
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Affiliation(s)
| | - Izabel Galhardo Demarchi
- Universidade Estadual de Maringá, Programa de Pós-graduação em Ciências da Saúde. Maringá, Paraná, Brazil
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Pennisi MG, Cardoso L, Baneth G, Bourdeau P, Koutinas A, Miró G, Oliva G, Solano-Gallego L. LeishVet update and recommendations on feline leishmaniosis. Parasit Vectors 2015; 8:302. [PMID: 26041555 PMCID: PMC4462189 DOI: 10.1186/s13071-015-0909-z] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 05/20/2015] [Indexed: 11/20/2022] Open
Abstract
Limited data is available on feline leishmaniosis (FeL) caused by Leishmania infantum worldwide. The LeishVet group presents in this report a review of the current knowledge on FeL, the epidemiological role of the cat in L. infantum infection, clinical manifestations, and recommendations on diagnosis, treatment and monitoring, prognosis and prevention of infection, in order to standardize the management of this disease in cats. The consensus of opinions and recommendations was formulated by combining a comprehensive review of evidence-based studies and case reports, clinical experience and critical consensus discussions. While subclinical feline infections are common in areas endemic for canine leishmaniosis, clinical illness due to L. infantum in cats is rare. The prevalence rates of feline infection with L. infantum in serological or molecular-based surveys range from 0% to more than 60%. Cats are able to infect sand flies and, therefore, they may act as a secondary reservoir, with dogs being the primary natural reservoir. The most common clinical signs and clinicopathological abnormalities compatible with FeL include lymph node enlargement and skin lesions such as ulcerative, exfoliative, crusting or nodular dermatitis (mainly on the head or distal limbs), ocular lesions (mainly uveitis), feline chronic gingivostomatitis syndrome, mucocutaneous ulcerative or nodular lesions, hypergammaglobulinaemia and mild normocytic normochromic anaemia. Clinical illness is frequently associated with impaired immunocompetence, as in case of retroviral coinfections or immunosuppressive therapy. Diagnosis is based on serology, polymerase chain reaction (PCR), cytology, histology, immunohistochemistry (IHC) or culture. If serological testing is negative or low positive in a cat with clinical signs compatible with FeL, the diagnosis of leishmaniosis should not be excluded and additional diagnostic methods (cytology, histology with IHC, PCR, culture) should be employed. The most common treatment used is allopurinol. Meglumine antimoniate has been administered in very few reported cases. Both drugs are administered alone and most cats recover clinically after therapy. Follow-up of treated cats with routine laboratory tests, serology and PCR is essential for prevention of clinical relapses. Specific preventative measures for this infection in cats are currently not available.
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Affiliation(s)
- Maria-Grazia Pennisi
- Department of Veterinary Sciences, University of Messina, Polo Universitario Annunziata, Messina, 98168, Italy.
| | - Luís Cardoso
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences, University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, 5000-801, Portugal.
| | - Gad Baneth
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot, 76100, Israel.
| | - Patrick Bourdeau
- Veterinary School of Nantes ONIRIS, University of Nantes, LUNAM, Nantes, 44307, France.
| | | | - Guadalupe Miró
- Department of Animal Health, Veterinary Faculty, Universidad Complutense de Madrid, Madrid, Spain.
| | - Gaetano Oliva
- Department of Veterinary Medicine and Food Production, University of Naples "Federico II", Via Delpino 1, Naples, 80137, Italy.
| | - Laia Solano-Gallego
- Departament de Medicina i Cirurgia Animal, Facultat de Veterinaria, Universitat Autonoma de Barcelona, Bellaterra, 08193, Spain.
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Sales KGDS, Costa PL, de Morais RCS, Otranto D, Brandão-Filho SP, Cavalcanti MDP, Dantas-Torres F. Identification of phlebotomine sand fly blood meals by real-time PCR. Parasit Vectors 2015; 8:230. [PMID: 25889289 PMCID: PMC4410465 DOI: 10.1186/s13071-015-0840-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 04/03/2015] [Indexed: 11/19/2022] Open
Abstract
Background Phlebotomine sand flies are blood-feeding insects of great medical and veterinary significance acting as vectors of Leishmania parasites. Studying the blood-feeding pattern of these insects may help in the understanding of their interactions with potential reservoir hosts of Leishmania parasites. In this study, we developed real time PCR assays for the identification of sand fly blood meal. Methods Six pairs of primers were designed based on cytochrome b gene sequences available in GenBank of the following potential hosts: dog, cat, horse, chicken, black rat, and human. Firstly, SYBR Green-based real time PCR assays were conducted using a standard curve with eight different concentrations (i.e., 10 ng, 1 ng, 100 pg, 10 pg, 1 pg, 100 fg, 10 fg and 1 fg per 2 μl) of DNA samples extracted from EDTA blood samples from each target animal. Then, DNA samples extracted from field-collected engorged female sand flies belonging to three species (i.e., Lutzomyia longipalpis, L. migonei and L. lenti) were tested by the protocols standardized herein. Additionally, female sand flies were experimentally fed on a black rat (Rattus rattus) and used for evaluating the time course of the detection of the protocol targeting this species. Results The protocols performed well with detection limits of 10 pg to 100 fg. Field-collected female sand flies were fed on blood from humans (73%), chickens (23%), dogs (22%), horses (15%), black rats (11%) and cats (2%). Interestingly, 76.1% of the L. longipalpis females were positive for human blood. In total, 48% of the tested females were fed on single sources, 31% on two and 12% on three. The analysis of the time course showed that the real time PCR protocol targeting the black rat DNA was able to detect small amounts of the host DNA up to 5 days after the blood meal. Conclusions The real time PCR assays standardized herein successfully detected small amounts of host DNA in female sand flies fed on different vertebrate species and, specifically for the black rats, up to 5 days after the blood meal. These assays represent promising tools for the identification of blood meal in field-collected female sand flies.
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Affiliation(s)
- Kamila Gaudêncio da Silva Sales
- Department of Immunology, Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Pernambuco, 50740-465, Brazil.
| | - Pietra Lemos Costa
- Department of Immunology, Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Pernambuco, 50740-465, Brazil.
| | - Rayana Carla Silva de Morais
- Department of Immunology, Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Pernambuco, 50740-465, Brazil.
| | - Domenico Otranto
- Department of Veterinary Medicine, Università degli Studi di Bari, Valenzano, Bari, 70010, Italy.
| | - Sinval Pinto Brandão-Filho
- Department of Immunology, Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Pernambuco, 50740-465, Brazil.
| | - Milena de Paiva Cavalcanti
- Department of Immunology, Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Pernambuco, 50740-465, Brazil.
| | - Filipe Dantas-Torres
- Department of Immunology, Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Pernambuco, 50740-465, Brazil. .,Department of Veterinary Medicine, Università degli Studi di Bari, Valenzano, Bari, 70010, Italy.
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12
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Baum M, de Castro EA, Pinto MC, Goulart TM, Baura W, Klisiowicz DDR, Vieira da Costa-Ribeiro MC. Molecular detection of the blood meal source of sand flies (Diptera: Psychodidae) in a transmission area of American cutaneous leishmaniasis, Paraná State, Brazil. Acta Trop 2015; 143:8-12. [PMID: 25530542 DOI: 10.1016/j.actatropica.2014.11.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 10/28/2014] [Accepted: 11/07/2014] [Indexed: 11/28/2022]
Abstract
The feeding behavior of sand flies provides valuable information about the vector/host interactions and elucidates the epidemiological patterns of American cutaneous leishmaniasis (ACL) transmission. The aim of this study was to identify the blood meal sources of sand flies in endemic areas of leishmaniasis in Paraná State through polymerase chain reaction (PCR) amplification of a prepronociceptin (PNOC) gene fragment and its subsequent DNA sequencing. Moreover, molecular assays were conducted to evaluate the sensitivity and reproducibility of the PNOC gene amplification. Besides that, a time-course digestion test of the blood using sand flies that fed artificially on BALB/c mice was performed. Of 1263 female sand flies collected in the field, 93 (3.6%) specimens were engorged and 27 allowed efficient amplification of the PNOC gene. These flies had fed on equine (Equus caballus), porcine (Sus scrofa) and canine (Canis lupus familiaris) species. The results also showed that the identification of the blood meal sources of the sand flies using the molecular method was directly linked to the level of digestion of the blood (time-course) and not to the amount of blood that had been ingested or to the presence of inhibitors in the blood.
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Affiliation(s)
- Maurício Baum
- Federal University of Paraná, Biological Sciences Sector, Basic Pathology Department, Polytechnic Center, Curitiba, Paraná, Brazil
| | - Edilene Alcântara de Castro
- Federal University of Paraná, Biological Sciences Sector, Basic Pathology Department, Polytechnic Center, Curitiba, Paraná, Brazil
| | - Mara Cristina Pinto
- State University Paulista Júlio de Mesquita Filho, Faculty of Pharmaceutical Sciences of Araraquara, Biological Sciences Department, Araraquara, São Paulo, Brazil
| | - Thais Marchi Goulart
- State University of Campinas, Institute of Biology, Department of Animal Biology, Campinas, São Paulo, Brazil
| | - Walter Baura
- Federal University of Paraná, Biological Sciences Sector, Basic Pathology Department, Polytechnic Center, Curitiba, Paraná, Brazil
| | - Débora do Rocio Klisiowicz
- Federal University of Paraná, Biological Sciences Sector, Basic Pathology Department, Polytechnic Center, Curitiba, Paraná, Brazil
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13
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Baum M, de Castro EA. Authors reply: defense of taxonomy, a Sisyphus task? Rev Soc Bras Med Trop 2014; 47:539. [DOI: 10.1590/0037-8682-0018-2014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 01/30/2014] [Indexed: 11/22/2022] Open
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14
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Marcondes CB. Defense of taxonomy, a Sisyphus task? Rev Soc Bras Med Trop 2014; 47:538. [DOI: 10.1590/0037-8682-0256-2013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 01/26/2014] [Indexed: 11/21/2022] Open
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