1
|
Dos Santos LS, Maekawa AS, da Silva DP, Almeida CE, Velho PENF, Drummond MR. Detection of Bartonella henselae DNA in Triatoma sordida collected in peridomiciliary environments. Braz J Infect Dis 2024; 28:103875. [PMID: 39353573 DOI: 10.1016/j.bjid.2024.103875] [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: 03/14/2024] [Revised: 08/13/2024] [Accepted: 09/17/2024] [Indexed: 10/04/2024] Open
Abstract
Bartonelloses represent a group of potentially fatal diseases associated with various clinical manifestations including endocarditis. Caused by bacteria belonging to the genus Bartonella, these microorganisms have a remarkable ability to infect mammals, and their transmission is commonly associated with hematophagous vectors such as fleas, lice, mosquitoes, and ticks. The aim of this study was to evaluate the occurrence of Bartonella sp. DNA in 81 triatomines of the species Triatoma sordida collected in the field in peri‑domiciliary areas of the Brazilian city of Seabra, located in the state of Bahia. Nested PCR was conducted targeting the ftsZ gene and real-time PCR targeting the gltA gene, both representing specific reactions for Bartonella henselae. Additionally, conventional PCR targeting kDNA was employed to evaluate the presence of Trypanosoma cruzi. Of the samples tested, 23/81 (28.39 %) bugs showed positive PCR for B. henselae. No sample showed positive PCR for T. cruzi. The high prevalence of triatomines with a positive PCR for B. henselae emphasizes the close relationship between these insects and the bacteria, indicating the need for further studies to investigate the vectorial potential of these kissing bugs.
Collapse
Affiliation(s)
- Luciene Silva Dos Santos
- Universidade de Campinas (UNICAMP), Faculdade de Ciências Médicas, Laboratório de Pesquisa Aplicada em Dermatologia e Infecção por Bartonella, Campinas, SP, Brazil
| | - Alexandre Seiji Maekawa
- Faculty of Medicine - Endocrinology, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Canada
| | - Dayane Pires da Silva
- Universidade de Campinas (UNICAMP), Instituto de Biologia, Programa de Pós-Graduação em Genética e Biologia Molecular, Campinas, SP, Brazil
| | - Carlos Eduardo Almeida
- Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Biologia, Laboratório de Entomologia, Rio de Janeiro, RJ, Brazil
| | - Paulo Eduardo Neves Ferreira Velho
- Universidade de Campinas (UNICAMP), Faculdade de Ciências Médicas, Laboratório de Pesquisa Aplicada em Dermatologia e Infecção por Bartonella, Campinas, SP, Brazil; Universidade de Campinas (UNICAMP), Faculdade de Ciências Médicas, Departamento de Medicina, Divisão de Dermatologia, Campinas, SP, Brazil.
| | - Marina Rovani Drummond
- Universidade de Campinas (UNICAMP), Faculdade de Ciências Médicas, Laboratório de Pesquisa Aplicada em Dermatologia e Infecção por Bartonella, Campinas, SP, Brazil
| |
Collapse
|
2
|
Ferreira FC, Gonçalves LO, Ruiz JC, Koerich LB, Pais FSM, Diotaiuti LG, Belisário CJ. Identification and characterization of microsatellite markers for population genetic studies of Panstrongylus megistus (Burmeister, 1835) (Triatominae: Reduviidae). Parasit Vectors 2021; 14:273. [PMID: 34022931 PMCID: PMC8140489 DOI: 10.1186/s13071-021-04771-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 05/03/2021] [Indexed: 11/19/2022] Open
Abstract
Background Panstrongylus megistus is the most important vector of Chagas disease in Brazil. Studies show that the principal factor hindering the control of triatomines is reinfestation of houses previously treated with insecticides. Studies at the microgeographic level are therefore necessary to better understand these events. However, an efficient molecular marker is not yet available for carrying out such analyses in this species. The aim of the present study was to identify and characterize microsatellite loci for future population genetic studies of P. megistus. Methods This study work consisted of five stages: (i) sequencing of genomic DNA; (ii) assembly and selection of contigs containing microsatellites; (iii) validation of amplification and evaluation of polymorphic loci; (iv) standardization of the polymorphic loci; and (v) verification of cross-amplification with other triatomine species. Results Sequencing of males and females generated 7,908,463 contigs with a total length of 2,043,422,613 bp. A total of 2,043,690 regions with microsatellites in 1,441,091 contigs were obtained, with mononucleotide repeats being the most abundant class. From a panel of 96 loci it was possible to visualize polymorphisms in 64.55% of the loci. Of the 20 loci genotyped, the number of alleles varied from two to nine with an average of 4.9. Cross-amplification with other species of triatomines was observed in 13 of the loci. Conclusions Due to the high number of alleles encountered, polymorphism and the capacity to amplify from geographically distant populations, the microsatellites described here show promise for utilization in population genetic studies of P. megistus. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04771-w.
Collapse
Affiliation(s)
| | | | | | - Leonardo Barbosa Koerich
- Laboratory of Hematophagous Insect Physiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | | | | |
Collapse
|
3
|
de Carvalho GC, Marrelli MT, Wilke ABB. Microsatellite Markers Transferability in Culex nigripalpus (Diptera: Culicidae). JOURNAL OF MEDICAL ENTOMOLOGY 2018; 55:1334-1336. [PMID: 29767738 DOI: 10.1093/jme/tjy075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Indexed: 06/08/2023]
Abstract
Microsatellite loci specifically designed and optimized for secondary vectors and neglected species of mosquitoes are lacking. Cross-species transferability of microsatellite loci between close taxa has been used as a reliable option, being successfully done for Aedes taeniorhynchus Wiedemann (Diptera: Culicidae), Triatoma sordida Stål (Hemiptera: Reduviidae), and Aedes fluviatilis Lutz (Diptera: Culicidae). Nonetheless, prior to the utilization of transferred microsatellites, they must be assessed for their performance and reliability on the target species. Therefore, the goal of this study was to transfer and validate SSR primers previously developed for the Culex pipiens complex to Culex (Culex) nigripalpus Theobald (Diptera: Culicidae). Culex nigripalpus were collected in seven different locations throughout the city of São Paulo using CDC traps baited with dry ice between 2011 and 2013, yielding a total of 223 specimens. Six SSR primers were successfully transferred to Cx. nigripalpus yielding satisfactory results for allele richness, ranging from 5 to 12 alleles per locus. The expected heterozygosity values were higher than the observed heterozygosity (P < 0.05) for the loci CxqCTG10, CxqGT51, and Cxpq59. Linkage disequilibrium results were statistically significant only for the comparison between the loci CxqCA115 and CxqCTG10, and the estimation for the probability of null alleles was also low, ranging from 0 to 0.052. These results substantially validate the SSRs transference to Cx. nigripalpus as well as their subsequent use in microevolution studies comprising this species.
Collapse
Affiliation(s)
- Gabriela Cristina de Carvalho
- Department of Epidemiology, School of Public Health, University of São Paulo, Avenida Doutor Arnaldo, São Paulo, SP, Brazil
| | - Mauro Toledo Marrelli
- Department of Public Health Sciences, Miller School of Medicine, University of Miami, Miami, FL
| | - André Barretto Bruno Wilke
- Department of Epidemiology, School of Public Health, University of São Paulo, Avenida Doutor Arnaldo, São Paulo, SP, Brazil
- Department of Public Health Sciences, Miller School of Medicine, University of Miami, Miami, FL
| |
Collapse
|
4
|
Hernandez-Castro LE, Paterno M, Villacís AG, Andersson B, Costales JA, De Noia M, Ocaña-Mayorga S, Yumiseva CA, Grijalva MJ, Llewellyn MS. 2b-RAD genotyping for population genomic studies of Chagas disease vectors: Rhodnius ecuadoriensis in Ecuador. PLoS Negl Trop Dis 2017; 11:e0005710. [PMID: 28723901 PMCID: PMC5536387 DOI: 10.1371/journal.pntd.0005710] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 07/31/2017] [Accepted: 06/13/2017] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Rhodnius ecuadoriensis is the main triatomine vector of Chagas disease, American trypanosomiasis, in Southern Ecuador and Northern Peru. Genomic approaches and next generation sequencing technologies have become powerful tools for investigating population diversity and structure which is a key consideration for vector control. Here we assess the effectiveness of three different 2b restriction site-associated DNA (2b-RAD) genotyping strategies in R. ecuadoriensis to provide sufficient genomic resolution to tease apart microevolutionary processes and undertake some pilot population genomic analyses. METHODOLOGY/PRINCIPAL FINDINGS The 2b-RAD protocol was carried out in-house at a non-specialized laboratory using 20 R. ecuadoriensis adults collected from the central coast and southern Andean region of Ecuador, from June 2006 to July 2013. 2b-RAD sequencing data was performed on an Illumina MiSeq instrument and analyzed with the STACKS de novo pipeline for loci assembly and Single Nucleotide Polymorphism (SNP) discovery. Preliminary population genomic analyses (global AMOVA and Bayesian clustering) were implemented. Our results showed that the 2b-RAD genotyping protocol is effective for R. ecuadoriensis and likely for other triatomine species. However, only BcgI and CspCI restriction enzymes provided a number of markers suitable for population genomic analysis at the read depth we generated. Our preliminary genomic analyses detected a signal of genetic structuring across the study area. CONCLUSIONS/SIGNIFICANCE Our findings suggest that 2b-RAD genotyping is both a cost effective and methodologically simple approach for generating high resolution genomic data for Chagas disease vectors with the power to distinguish between different vector populations at epidemiologically relevant scales. As such, 2b-RAD represents a powerful tool in the hands of medical entomologists with limited access to specialized molecular biological equipment.
Collapse
Affiliation(s)
- Luis E. Hernandez-Castro
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, United Kingdom
| | - Marta Paterno
- Department of Biology, University of Padua, Padua, Italy
- Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Rome, Italy
| | - Anita G. Villacís
- Center for Research on Health in Latin America, School of Biological Sciences, Pontifical Catholic University of Ecuador, Quito, Ecuador
| | - Björn Andersson
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Jaime A. Costales
- Center for Research on Health in Latin America, School of Biological Sciences, Pontifical Catholic University of Ecuador, Quito, Ecuador
| | - Michele De Noia
- Department of Animal Behaviour, Bielefeld University, Bielefeld, Germany
| | - Sofía Ocaña-Mayorga
- Center for Research on Health in Latin America, School of Biological Sciences, Pontifical Catholic University of Ecuador, Quito, Ecuador
| | - Cesar A. Yumiseva
- Center for Research on Health in Latin America, School of Biological Sciences, Pontifical Catholic University of Ecuador, Quito, Ecuador
| | - Mario J. Grijalva
- Center for Research on Health in Latin America, School of Biological Sciences, Pontifical Catholic University of Ecuador, Quito, Ecuador
- Infectious and Tropical Disease Institute, Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Ohio, United States of America
| | - Martin S. Llewellyn
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, United Kingdom
| |
Collapse
|
5
|
Multini LC, Wilke ABB, Suesdek L, Marrelli MT. Population Genetic Structure of Aedes fluviatilis (Diptera: Culicidae). PLoS One 2016; 11:e0162328. [PMID: 27598889 PMCID: PMC5012556 DOI: 10.1371/journal.pone.0162328] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 08/19/2016] [Indexed: 12/23/2022] Open
Abstract
Although Aedes fluviatilis is an anthropophilic mosquito found abundantly in urban environments, its biology, epidemiological potential and genetic characteristics are poorly understood. Climate change and urbanization processes that result in environmental modifications benefit certain anthropophilic mosquito species such as Ae. fluviatilis, greatly increasing their abundance in urban areas. To gain a better understanding of whether urbanization processes modulate the genetic structure of this species in the city of São Paulo, we used eight microsatellite loci to genetically characterize Ae. fluviatilis populations collected in nine urban parks in the city of São Paulo. Our results show that there is high gene flow among the populations of this species, heterozygosity deficiency and low genetic structure and that the species may have undergone a recent population expansion. There are two main hypotheses to explain these findings: (i) Ae. fluviatilis populations have undergone a population expansion as a result of urbanization; and (ii) as urbanization of the city of São Paulo occurred recently and was quite intense, the structuring of these populations cannot be observed yet, apart from in the populations of Ibirapuera and Piqueri parks, where the first signs of structuring have appeared. We believe that the expansion found in Ae. fluviatilis populations is probably correlated with the unplanned urbanization of the city of São Paulo, which transformed green areas into urbanized areas, as well as the increasing population density in the city.
Collapse
Affiliation(s)
- Laura Cristina Multini
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brasil
- Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, SP, Brasil
| | - André Barretto Bruno Wilke
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brasil
- * E-mail:
| | - Lincoln Suesdek
- Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, SP, Brasil
- Laboratório de Parasitologia, Instituto Butantan, São Paulo, SP, Brasil
| | - Mauro Toledo Marrelli
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brasil
- Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, SP, Brasil
| |
Collapse
|
6
|
Multini LC, Marrelli MT, Wilke ABB. Microsatellite loci cross-species transferability in Aedes fluviatilis (Diptera:Culicidae): a cost-effective approach for population genetics studies. Parasit Vectors 2015; 8:635. [PMID: 26667177 PMCID: PMC4678524 DOI: 10.1186/s13071-015-1256-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 12/10/2015] [Indexed: 12/02/2022] Open
Abstract
Background Aedes fluviatilis is a neotropical mosquito species thought to be a potential vector of Yellow Fever viruses and can be infected with Plasmodium gallinaceum in laboratory. A better understanding of its genetic structure is very important to understand its epidemiologic potential and how it is responding to urbanization. The objective of this study was to survey the transferability of microsatellites loci developed for other Aedes to Ae. fluviatilis. Findings We tested in Ae. fluviatilis 40 pairs of primers known to flank microsatellite regions in Aedes aegypti, Aedes albopictus and Aedes caspius, and found eight loci that amplified consistently. The number of alleles per locus ranged from 2 to 15, and the expected heterozygosity ranged from 0.09 to 0.85. Conclusions We found that several microsatellite primers successfully transferred to Ae. fluviatilis. This finding opens avenues for cost-effective optimization of high-resolution population genetic tools.
Collapse
Affiliation(s)
- Laura Cristina Multini
- Institute of Tropical Medicine of São Paulo, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 470, São Paulo, SP, CEP 05403-000, Brazil.
| | - Mauro Toledo Marrelli
- Institute of Tropical Medicine of São Paulo, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 470, São Paulo, SP, CEP 05403-000, Brazil. .,Department of Epidemiology, School of Public Health, University of São Paulo, Av. Dr. Arnaldo 715, São Paulo, SP, CEP-01246-904, Brazil.
| | - André Barretto Bruno Wilke
- Department of Epidemiology, School of Public Health, University of São Paulo, Av. Dr. Arnaldo 715, São Paulo, SP, CEP-01246-904, Brazil.
| |
Collapse
|