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León-Sosa A, Orlando SA, Mora-Jaramillo N, Calderón J, Rodriguez-Pazmino AS, Carvajal E, Guizado-Herrera D, Narváez Y, Sánchez E, Arreaga A, Zevallos JC, Carrillo C, Garcia-Bereguiain MA. First report of Bartonella henselae and Bartonella clarridgeiae carriage in stray cats from Ecuador and its link to a cat scratch disease outbreak in 2022. Acta Trop 2024; 257:107278. [PMID: 38851625 DOI: 10.1016/j.actatropica.2024.107278] [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: 02/18/2024] [Revised: 05/26/2024] [Accepted: 05/31/2024] [Indexed: 06/10/2024]
Abstract
INTRODUCTION The genus Bartonella includes species and subspecies of fastidious, facultative intracellular Gram-negative bacilli that infect a wide variety of mammalian reservoirs including cats and humans. In 2022, the Ecuadorian Ministry of Health reported an outbreak of cat scratch disease caused by B. henselae in the city of Guayaquil. Therefore, we aimed to characterize the presence of Bartonella spp. in domestic and stray cats from the area of Guayaquil where the outbreak happened in 2022. METHODS Whole blood samples of 100 domestic and stray cats were collected. Riboflavin synthase (ribC) and 16S rRNA genes detection was performed by PCR using Bartonella spp. specific primers, followed by Sanger sequencing and phylogenetic analysis. RESULTS 14 cats were positive for Bartonella spp. carriage. Phylogenetic analysis confirmed the presence of 12 cats infected with B. henselae and 2 cats with B. clarridgeiae. CONCLUSIONS There is a high prevalence of Bartonella spp. carriage in cats in the city of Guayaquil within the area where a recent cat scratch disease outbreak happened. Considering the high presence of cats and other domestic and stray animals in the city of Guayaquil, a One Health approach for surveillance and prevention of zoonotic diseases like cat scratch disease is needed.
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Affiliation(s)
- Ariana León-Sosa
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Dirección Técnica de Investigación, Desarrollo e Innovación, Guayaquil, Ecuador
| | - Solon Alberto Orlando
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Dirección Técnica de Investigación, Desarrollo e Innovación, Guayaquil, Ecuador; Universidad Espíritu Santo, Guayaquil, Ecuador
| | - Naomi Mora-Jaramillo
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Dirección Técnica de Investigación, Desarrollo e Innovación, Guayaquil, Ecuador
| | - Joselyn Calderón
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Dirección Técnica de Investigación, Desarrollo e Innovación, Guayaquil, Ecuador
| | | | - Elsy Carvajal
- One Health Research Group, Universidad de Las Américas, Quito, Ecuador
| | - David Guizado-Herrera
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Dirección Técnica de Investigación, Desarrollo e Innovación, Guayaquil, Ecuador
| | - Yolanda Narváez
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Dirección Técnica de Investigación, Desarrollo e Innovación, Guayaquil, Ecuador
| | - Eusebio Sánchez
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Dirección Técnica de Investigación, Desarrollo e Innovación, Guayaquil, Ecuador
| | - Alma Arreaga
- Instituto Nacional de Investigación en Salud Pública "Leopoldo Izquieta Pérez", Dirección Técnica de Investigación, Desarrollo e Innovación, Guayaquil, Ecuador
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Rotundo S, Tassone MT, Marascio N, Morrone HL, Gigliotti S, Quirino A, Russo A, Matera G, Trecarichi EM, Torti C. A systematic review on antibiotic therapy of cutaneous bacillary angiomatosis not related to major immunocompromising conditions: from pathogenesis to treatment. BMC Infect Dis 2024; 24:380. [PMID: 38589795 PMCID: PMC11000314 DOI: 10.1186/s12879-024-09253-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 03/25/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Cutaneous bacillary angiomatosis (cBA) is a vascular proliferative disorder due to Bartonella spp. that mostly affects people living with HIV (PLWH), transplanted patients and those taking immunosuppressive drugs. Since cBA is mostly related to these major immunocompromising conditions (i.e., T-cell count impairment), it is considered rare in relatively immunocompetent patients and could be underdiagnosed in them. Moreover, antimicrobial treatment in this population has not been previously investigated. METHODS We searched the databases PubMed, Google Scholar, Scopus, OpenAIRE and ScienceDirect by screening articles whose title included the keywords "bacillary" AND "angiomatosis" and included case reports about patients not suffering from major immunocompromising conditions to provide insights about antibiotic treatments and their duration. RESULTS Twenty-two cases of cBA not related to major immunocompromising conditions were retrieved. Antibiotic treatment duration was shorter in patients with single cBA lesion than in patients with multiple lesions, including in most cases macrolides and tetracyclines. CONCLUSIONS cBA is an emerging manifestation of Bartonella spp. infection in people not suffering from major immunocompromising conditions. Until evidence-based guidelines are available, molecular tests together with severity and extension of the disease can be useful to personalize the type of treatment and its duration.
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Affiliation(s)
- Salvatore Rotundo
- Dipartimento di Scienze Mediche e Chirurgiche, Università "Magna Graecia", Catanzaro, Italy
| | - Maria Teresa Tassone
- Dipartimento di Scienze Mediche e Chirurgiche, Università "Magna Graecia", Catanzaro, Italy
| | - Nadia Marascio
- Dipartimento di Scienze della Vita, Unità Operativa Complessa di Microbiologica Clinica, Università "Magna Graecia", Catanzaro, Italy
| | - Helen Linda Morrone
- Dipartimento di Scienze Mediche e Chirurgiche, Università "Magna Graecia", Catanzaro, Italy
| | - Simona Gigliotti
- Dipartimento di Scienze della Vita, Unità Operativa Complessa di Microbiologica Clinica, Università "Magna Graecia", Catanzaro, Italy
| | - Angela Quirino
- Dipartimento di Scienze della Vita, Unità Operativa Complessa di Microbiologica Clinica, Università "Magna Graecia", Catanzaro, Italy
| | - Alessandro Russo
- Dipartimento di Scienze Mediche e Chirurgiche, Università "Magna Graecia", Catanzaro, Italy
- Unità Operativa Complessa di Malattie Infettive e Tropicali, Azienda Ospedaliero-Universitaria "R. Dulbecco", Catanzaro, Italy
| | - Giovanni Matera
- Dipartimento di Scienze della Vita, Unità Operativa Complessa di Microbiologica Clinica, Università "Magna Graecia", Catanzaro, Italy
| | - Enrico Maria Trecarichi
- Dipartimento di Scienze Mediche e Chirurgiche, Università "Magna Graecia", Catanzaro, Italy
- Unità Operativa Complessa di Malattie Infettive e Tropicali, Azienda Ospedaliero-Universitaria "R. Dulbecco", Catanzaro, Italy
| | - Carlo Torti
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.
- Dipartimento di Sicurezza e Bioetica, Università Cattolica del Sacro Cuore, Rome, Italy.
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Jin X, Gou Y, Xin Y, Li J, Sun J, Li T, Feng J. Advancements in understanding the molecular and immune mechanisms of Bartonella pathogenicity. Front Microbiol 2023; 14:1196700. [PMID: 37362930 PMCID: PMC10288214 DOI: 10.3389/fmicb.2023.1196700] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/23/2023] [Indexed: 06/28/2023] Open
Abstract
Bartonellae are considered to be emerging opportunistic pathogens. The bacteria are transmitted by blood-sucking arthropods, and their hosts are a wide range of mammals including humans. After a protective barrier breach in mammals, Bartonella colonizes endothelial cells (ECs), enters the bloodstream, and infects erythrocytes. Current research primarily focuses on investigating the interaction between Bartonella and ECs and erythrocytes, with recent attention also paid to immune-related aspects. Various molecules related to Bartonella's pathogenicity have been identified. The present review aims to provide a comprehensive overview of the newly described molecular and immune responses associated with Bartonella's pathogenicity.
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Affiliation(s)
- Xiaoxia Jin
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation and Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Yuze Gou
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou, China
| | - Yuxian Xin
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou, China
| | - Jingwei Li
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation and Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jingrong Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou, China
| | - Tingting Li
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation and Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jie Feng
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou, China
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
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4
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Jimenez-Vasquez V, Calvay-Sanchez KD, Zarate-Sulca Y, Mendoza-Mujica G. In-silico identification of linear B-cell epitopes in specific proteins of Bartonella bacilliformis for the serological diagnosis of Carrion's disease. PLoS Negl Trop Dis 2023; 17:e0011321. [PMID: 37228134 DOI: 10.1371/journal.pntd.0011321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 04/20/2023] [Indexed: 05/27/2023] Open
Abstract
Carrion´s disease is caused by Bartonella bacilliformis, it is a Gram-negative pleomorphic bacterium. B. bacilliformis is transmitted by Lutzomyia verrucarum in endemic areas of the Peruvian Inter-Andean valleys. Additionally, the pathogenicity of B. bacilliformis involves an initial infection of erythrocytes and the further infection of endothelial cells, which mainly affects children and expectant women from extreme poverty rural areas. Therefore, the implementation of serological diagnostic methods and the development of candidate vaccines for the control of CD could be facilitated by the prediction of linear b-cell epitopes in specific proteins of B. bacilliformis by bioinformatics analysis. In this study, We used an in-silico analysis employing six web servers for the identification of epitopes in proteins of B. bacilliformis. The selection of B. bacilliformis-specific proteins and their analysis to identify epitopes allowed the selection of seven protein candidates that are expected to have high antigenic activity.
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Affiliation(s)
| | | | - Yanina Zarate-Sulca
- Laboratory of Vector-Borne Bacterial Diseases. National Institute of Health, Lima, Peru
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5
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Mullins K, Canal E, Ouch P, Prasetyo D, Tagoe J, Attram N, Yeboah C, Kumordjie S, Fox A, Letizia AG, Rachlin A, Nguyen HM, Robinson MT, Vongsouvath M, Davong V, Maxay M, Simons MP, Caranci A, Newton PN, Richards AL, Farris CM. Bartonella Species in Cambodia, Ghana, Laos, and Peru: Results from Vector and Serosurveys. Vector Borne Zoonotic Dis 2023; 23:9-17. [PMID: 36633562 PMCID: PMC7614129 DOI: 10.1089/vbz.2021.0090] [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] [Indexed: 01/13/2023] Open
Abstract
Background: Bartonella species are fastidious gram-negative vector-borne bacteria with a wide range of mammalian reservoirs. While it is understood that some species of Bartonella are human pathogens, the extent of human exposure to Bartonella species (both pathogenic and nonpathogenic) is yet to be fully understood. Materials and Methods: To this end, residual sera from participants enrolled in undifferentiated fever studies in Cambodia, Ghana, Laos, and Peru were screened for the presence of IgG antibodies against Bartonella quintana and Bartonella henselae, using the FOCUS diagnostics Dual Spot- Bartonella IgG Immunofluorescence assay. Forty-eight patients with suspected or confirmed Bartonella bacilliformis exposure or infection in Peru were screened to assess cross-reactivity of the FOCUS assay for IgG against other Bartonella species. Results: Ten of 13 patients with confirmed B. bacilliformis infection were Bartonella-specific IgG positive, and overall, 36/48 of the samples were positive. In addition, 79/206, 44/200, 101/180, and 57/100 of the samples from Peru, Laos, Cambodia, and Ghana, respectively, were Bartonella-specific IgG positive. Furthermore, ectoparasite pools from Cambodia, Laos, and Peru were tested using quantitative real-time PCR (qPCR) for the presence of Bartonella DNA. Of the sand fly pools collected in Peru, 0/196 were qPCR positive; 15/140 flea pools collected in Cambodia were qPCR positive; while 0/105 ticks, 0/22 fleas, and 0/3 louse pools collected in Laos tested positive for Bartonella DNA. Conclusion: Evidence of Bartonella in fleas from Cambodia supports the possibility that humans are exposed to Bartonella through this traditional vector. However, Bartonella species were not found in fleas, ticks, or lice from Laos, or sand flies from Peru. This could account for the lower positive serology among the population in Laos and the strictly localized nature of B. bacilliformis infections in Peru. Human exposure to the Bartonella species and Bartonella as a human pathogen warrants further investigation.
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Affiliation(s)
- Kristin Mullins
- University of Maryland School of Medicine, Baltimore, Maryland, USA
- Naval Medical Research Center, Silver Spring, Maryland, USA
| | | | - Pidor Ouch
- Naval Medical Research Unit-2, Phnom Penh, Cambodia
| | | | - Janice Tagoe
- Naval Medical Research Unit-3 Ghana Detachment, Accra, Ghana
| | - Naiki Attram
- Naval Medical Research Unit-3 Ghana Detachment, Accra, Ghana
| | - Clara Yeboah
- Naval Medical Research Unit-3 Ghana Detachment, Accra, Ghana
| | | | - Anne Fox
- Naval Medical Research Unit-3 Ghana Detachment, Accra, Ghana
| | | | - Audrey Rachlin
- Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
| | - Hung Manh Nguyen
- Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
| | - Matthew T Robinson
- Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
- Center for Tropical Medicine & Global Health, Nuffield Department of Medicine, Oxford University, Oxford, United Kingdom
| | - Manivanh Vongsouvath
- Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
- Microbiology Laboratory, Mahosot Hospital, Qua Fa Ngum, Vientiane, Lao PDR
| | - Viengmon Davong
- Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
- Microbiology Laboratory, Mahosot Hospital, Qua Fa Ngum, Vientiane, Lao PDR
| | - Mayfong Maxay
- Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
- Center for Tropical Medicine & Global Health, Nuffield Department of Medicine, Oxford University, Oxford, United Kingdom
- Institute of Research and Education Development, University of Health Sciences, Ministry of Health, Vientiane, Lao PDR
| | - Mark P Simons
- Naval Medical Research Center, Silver Spring, Maryland, USA
| | - Angela Caranci
- Northwest Mosquito and Vector Control District, Corona, California, USA
| | - Paul N Newton
- Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
- Center for Tropical Medicine & Global Health, Nuffield Department of Medicine, Oxford University, Oxford, United Kingdom
| | - Allen L Richards
- Naval Medical Research Center, Silver Spring, Maryland, USA
- Uniformed Services University, Bethesda, Maryland, USA
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Bravo-Barriga D, Ruiz-Arrondo I, Peña RE, Lucientes J, Delacour-Estrella S. Phlebotomine sand flies (Diptera, Psychodidae) from Spain: an updated checklist and extended distributions. Zookeys 2022; 1106:81-99. [PMID: 36760819 PMCID: PMC9848825 DOI: 10.3897/zookeys.1106.81432] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 05/19/2022] [Indexed: 11/12/2022] Open
Abstract
Phlebotomine sand flies (Diptera: Psychodidae) are the natural vectors of Leishmania spp. (Kinetoplastida: Trypanosomatidae) and phleboviruses (Bunyavirales: Phenuiviridae). In Spain, these vectors appear to be increasing their geographical distribution and have serious repercussions on public and veterinary health, encouraging studies of sand flies and their associated pathogens. An up-to-date and easily accessible compendium of current and historical data on their presence and detailed distribution is a crucial step towards the development and implementation of appropriate preventive strategies. A checklist on the presence and distribution of sand flies in Spain is compiled from data extracted from a comprehensive review of scientific literature published between 1909 and 2021 and our new records on the presence of sand flies specimens collected under the entomological surveillance of bluetongue vectors from the Spanish Ministry of Agriculture, Fishery and Food (MAPA) during the period 2004-2021. In total, 13 Spanish species of sand flies (two of them with controversial status) belonging to two genera and six subgenera are presented in this updated checklist, including new distribution data for seven species, among which several stand out as confirmed or suspected vectors of Leishmaniainfantum: Phlebotomusariasi, Ph.langeroni, Ph.mascittii, and Ph.perniciosus.
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Affiliation(s)
- Daniel Bravo-Barriga
- Universidad de Extremadura, Facultad de Veterinaria, Departamento de Sanidad Animal, Parasitología, Avda. Universidad s/n, 10003 Cáceres, SpainUniversidad de ExtremaduraCáceresSpain
| | - Ignacio Ruiz-Arrondo
- Center for Rickettsiosis and Arthropod-Borne Diseases, Hospital Universitario San Pedro-CIBIR, Logroño, SpainHospital Universitario San Pedro-CIBIRLogroñoSpain
| | - Rosa Estrada Peña
- Animal Health Department, The AgriFood Institute of Aragon (IA2), School of Veterinary Medicine, University of Zaragoza, 50013 Zaragoza, SpainUniversity of ZaragozaZaragozaSpain
| | - Javier Lucientes
- Animal Health Department, The AgriFood Institute of Aragon (IA2), School of Veterinary Medicine, University of Zaragoza, 50013 Zaragoza, SpainUniversity of ZaragozaZaragozaSpain
| | - Sarah Delacour-Estrella
- Animal Health Department, The AgriFood Institute of Aragon (IA2), School of Veterinary Medicine, University of Zaragoza, 50013 Zaragoza, SpainUniversity of ZaragozaZaragozaSpain,Departamento de Investigación y Desarrollo (I+D). Quimera. B.S. Calle Olivo, 14, 50016 La Puebla de Alfindén, SpainDepartamento de Investigación y DesarrolloLa Puebla de AlfindénSpain
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7
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Carrillo-Larco RM, Guzman-Vilca WC, Leon-Velarde F, Bernabe-Ortiz A, Jimenez MM, Penny ME, Gianella C, Leguía M, Tsukayama P, Hartinger SM, Lescano AG, Cuba-Fuentes MS, Cutipé Y, Diez-Canseco F, Mendoza W, Ugarte-Gil C, Valdivia-Gago A, Zavaleta-Cortijo C, Miranda JJ. Peru - Progress in health and sciences in 200 years of independence. LANCET REGIONAL HEALTH. AMERICAS 2022; 7:100148. [PMID: 36777656 PMCID: PMC9904031 DOI: 10.1016/j.lana.2021.100148] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Peru celebrates 200 years of independence in 2021. Over this period of independent life, and despite the turbulent socio-political scenarios, from internal armed conflict to economic crisis to political instability over the last 40 years, Peru has experienced major changes on its epidemiological and population health profile. Major advancements in maternal and child health as well as in communicable diseases have been achieved in recent decades, and today Peru faces an increasing burden of non-communicable diseases including mental health conditions. In terms of the configuration of the public health system, Peru has also strived to secure country-wide optimal health care, struggling in particular to improve primary health care and intercultural services. The science and technology infrastructure has also evolved, although the need for substantial investments remains if advancing science is to be a national priority. Climate change will also bring significant challenges to population health given Peru's geographical and microclimates diversity. Looking back over the 200-years of independence, we present a summary of key advances in selected health-related fields, thus serving as the basis for reflections on pending agendas and future challenges, in order to look forward to ensuring the future health and wellbeing of the Peruvian population. Resumen translated abstract El Perú cumple 200 años de independencia en 2021. Durante estos dos siglos de vida independiente, junto con periodos sociales y políticos turbulentos, incluyendo un conflicto armado interno, hiperinflación y la inestabilidad política de los últimos 40 años, el Perú ha experimentado importantes cambios en su perfil epidemiológico con repercusiones directas en la salud de la población. En las últimas décadas, los indicadores de salud materno-infantil y de las enfermedades transmisibles muestran mejoría importante, pero el país se enfrenta de manera simultánea a una carga cada vez mayor de enfermedades no transmisibles y de salud mental. En cuanto a los sistemas de salud pública, se han realizado esfuerzos por aumentar la cobertura y calidad de la atención de salud en todo el país, apostándose en particular por mejorar la atención primaria. La ciencia y tecnología relacionadas con la salud también han mejorado, aunque si se quiere que la ciencia sea una prioridad nacional, son necesarias inversiones sustanciales. El cambio climático traerá importantes desafíos para la salud de la población, dada la diversidad geográfica y de microclimas del país. Para conmemorar los 200 años de vida independiente del Perú, presentamos un resumen de avances clave en diversas áreas y temas relacionados con la salud. Este repaso sirve como base para reflexionar sobre agendas y desafíos pendientes y futuros, con el fin de asegurar la salud y el bienestar de la población peruana en las próximas décadas.
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Affiliation(s)
- Rodrigo M. Carrillo-Larco
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, St Mary's Campus, London, United Kingdom
- CRONICAS Center of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru
| | | | - Fabiola Leon-Velarde
- Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofia, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Antonio Bernabe-Ortiz
- CRONICAS Center of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru
| | | | | | - Camila Gianella
- Departmento de Psicología, Facultad de Psicología, Pontificia Universidad Católica del Perú, Lima, Peru
- Chr. Michelsen Institute, Bergen, Norway
| | - Mariana Leguía
- Laboratorio de Genómica, Pontificia Universidad Católica del Perú, Lima, Peru
| | - Pablo Tsukayama
- Laboratorio de Genómica Microbiana, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
- Parasites and Microbes Programme, Wellcome Sanger Institute, Hinxton, United Kingdom
| | - Stella M. Hartinger
- Clima, Latin American Center of Excellence for Climate Change and Health, Universidad Peruana Cayetano Heredia, Lima, Peru
- University of Basel, Basel, Switzerland
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland
| | - Andres G. Lescano
- Clima, Latin American Center of Excellence for Climate Change and Health, Universidad Peruana Cayetano Heredia, Lima, Peru
- Emerge, Emerging Diseases and Climate Change Research Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
| | | | | | - Francisco Diez-Canseco
- CRONICAS Center of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Walter Mendoza
- Fondo de Población de las Naciones Unidas (UNFPA), Lima, Peru
| | - Cesar Ugarte-Gil
- Department of Medicine, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
- Instituto de Medicina Tropical “Alexander von Humboldt”, Universidad Peruana Cayetano Heredia, Lima, Peru
- TB Center, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Center for Global Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - Andrea Valdivia-Gago
- Faculty of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
- Intercultural Citizenship and Indigenous Health Unit (UCISI), Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Carol Zavaleta-Cortijo
- Faculty of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
- Intercultural Citizenship and Indigenous Health Unit (UCISI), Universidad Peruana Cayetano Heredia, Lima, Peru
- Nutritional Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, United Kingdom
| | - J. Jaime Miranda
- CRONICAS Center of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru
- Department of Medicine, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
- Department of Non-Communicable Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
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8
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Sousa-Paula LCD, Pessoa FAC, Otranto D, Dantas-Torres F. Beyond taxonomy: species complexes in New World phlebotomine sand flies. MEDICAL AND VETERINARY ENTOMOLOGY 2021; 35:267-283. [PMID: 33480064 DOI: 10.1111/mve.12510] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/21/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
A species complex (= species group, species series) is an assemblage of species, which are related morphologically and phylogenetically. Recent research has revealed several arthropod vector species that were believed to be a single nominal species actually representing a group of closely related species, which are sometimes morphologically indistinguishable at one or more developmental stages. In some instances, differences in terms of vector competence, capacity, or both have been recorded. It highlights the importance of detecting and studying species complexes to improve our understanding of pathogen transmission patterns, which may be vectored more or less efficiently by different species within the complex. Considering more than 540 species, about one-third of the phlebotomine sand flies in the New World present males and/or females morphologically indistinguishable to one or more species. Remarkably, several of these species may act in transmission of pathogenic agents. In this article, we review recent research on species complexes in phlebotomine sand flies from the Americas. Possible practical implications of recently acquired knowledge and future research needs are also discussed.
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Affiliation(s)
- L C de Sousa-Paula
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (FIOCRUZ), Recife, Pernambuco, Brazil
| | - F A C Pessoa
- Laboratório de Ecologia e Doenças Transmissíveis na Amazônia, Leônidas e Maria Deane Institute, Oswaldo Cruz Foundation (FIOCRUZ), Manaus, Amazonas, Brazil
| | - D Otranto
- Parasitology Unit, Department of Veterinary Medicine, University of Bari, Valenzano, Italy
| | - F Dantas-Torres
- Laboratory of Immunoparasitology, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (FIOCRUZ), Recife, Pernambuco, Brazil
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9
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Shepard Z, Rios M, Solis J, Wand T, Henao-Martínez AF, Franco-Paredes C, Suarez JA. Common Dermatologic Conditions in Returning Travelers. CURRENT TROPICAL MEDICINE REPORTS 2021; 8:104-111. [PMID: 34458071 DOI: 10.1007/s40475-021-00231-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Purpose of Review Travel medicine practitioners often are confronted with returning travelers with dermatologic disorders that could be of infectious causes or inflammatory or allergic. Some dermatologic processes are the result of exposure to insects or acquired due to environmental exposures. There is a broad range of dermatosis of infectious and non-infectious etiologies that clinicians need to consider in the differential diagnosis of dermatosis in travelers. Recent Findings With increasing international travel to tropical destinations, many individuals may be exposed to rickettsia (i.e., African tick bite fever, scrub typhus, or Mediterranean spotted fever), parasitic infections (i.e., cutaneous larva migrans, cutaneous leishmaniasis, African trypanosomiasis, or American trypanosomiasis), viral infections (i.e., measles or Zika virus infection), bacterial (i.e., Buruli ulcer) or ectoparasites (scabies or tungiasis), and myiasis. Cutaneous lesions provide clinical clues to the diagnosis of specific exposures during travel among returned travelers. Summary Dermatologic disorders represent the third most common health problem in returned travelers, after gastrointestinal and respiratory illness. Many of these conditions may pose a risk of severe complications if there is any delay in diagnosis. Therefore, clinicians caring for travelers need to become familiar with the most frequent infectious and non-infectious skin disorders in travelers.
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Affiliation(s)
- Zachary Shepard
- Division of Infectious Diseases, Department of Medicine, School of Medicine, University of Colorado Denver, Anschutz Medical Campus, 12700 East 19th Avenue, 11C01, Aurora, CO 80045, USA
| | - Margarita Rios
- Instituto Conmemorativo Gorgas de Estudios de la Salud, Panamá City, Panamá
| | - Jamie Solis
- School of Medicine, University of Colorado Denver, Anschutz Medical Campus, 12700 East 19th Avenue, 11C01, Aurora, CO 80045, USA
| | - Taylor Wand
- School of Medicine, University of Colorado Denver, Anschutz Medical Campus, 12700 East 19th Avenue, 11C01, Aurora, CO 80045, USA
| | - Andrés F Henao-Martínez
- Division of Infectious Diseases, Department of Medicine, School of Medicine, University of Colorado Denver, Anschutz Medical Campus, 12700 East 19th Avenue, 11C01, Aurora, CO 80045, USA
| | - Carlos Franco-Paredes
- Division of Infectious Diseases, Department of Medicine, School of Medicine, University of Colorado Denver, Anschutz Medical Campus, 12700 East 19th Avenue, 11C01, Aurora, CO 80045, USA
| | - José Antonio Suarez
- Investigador SNI Senacyt Panamá, Clinical Research Department, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panamá City, Panamá
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10
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Immunogenic Peptides from Pap31 and SCS-α of Bartonella bacilliformis: One Step Closer to a Rapid Diagnostic Tool for Carrion's Disease. Pathogens 2021; 10:pathogens10080917. [PMID: 34451381 PMCID: PMC8400886 DOI: 10.3390/pathogens10080917] [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: 03/24/2021] [Revised: 07/16/2021] [Accepted: 07/17/2021] [Indexed: 11/17/2022] Open
Abstract
Bartonella bacilliformis is the causal agent of Carrion’s disease, an overlooked illness endemic in the Andean Mountains with Peru being the most affected country. The diagnostic of this illness is a challenge due to the limited resources and the common symptomatology with other infectious diseases. The goal of this study was to identify immunogenic peptides from Pap31 and succinyl-CoA synthetase α (SCS-α) of B. bacilliformis that might be suitable for developing a serologic tool. The immunodominant character of Pap31 and SCS-α was determined by Western blotting and in-silico analysis. Subsequently, 35 peptides were selected for epitope mapping and their immunoreactivity was tested by enzyme-linked immunosorbent assay (ELISA). A total of 30 sera were tested including pre-exposed people with high IgM levels for Pap31/SCS-α (23 sera), patients (2 sera) as well as 5 sera with no reactivity to Pap31/SCS-α. The results indicate that Pap31-8 (187QAIGSAILKGTKDTGT202) and SCS-α-12 (59IFASVAEGKEKTGANA74) are the most immunogenic peptides, with Pap31-8 showing potential to discriminate between B. bacilliformis and the remaining Bartonella spp., and SCS-α-12 differentiating Bartonella spp. from other microorganisms.
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11
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Serral F, Castello FA, Sosa EJ, Pardo AM, Palumbo MC, Modenutti C, Palomino MM, Lazarowski A, Auzmendi J, Ramos PIP, Nicolás MF, Turjanski AG, Martí MA, Fernández Do Porto D. From Genome to Drugs: New Approaches in Antimicrobial Discovery. Front Pharmacol 2021; 12:647060. [PMID: 34177572 PMCID: PMC8219968 DOI: 10.3389/fphar.2021.647060] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 05/17/2021] [Indexed: 01/31/2023] Open
Abstract
Decades of successful use of antibiotics is currently challenged by the emergence of increasingly resistant bacterial strains. Novel drugs are urgently required but, in a scenario where private investment in the development of new antimicrobials is declining, efforts to combat drug-resistant infections become a worldwide public health problem. Reasons behind unsuccessful new antimicrobial development projects range from inadequate selection of the molecular targets to a lack of innovation. In this context, increasingly available omics data for multiple pathogens has created new drug discovery and development opportunities to fight infectious diseases. Identification of an appropriate molecular target is currently accepted as a critical step of the drug discovery process. Here, we review how diverse layers of multi-omics data in conjunction with structural/functional analysis and systems biology can be used to prioritize the best candidate proteins. Once the target is selected, virtual screening can be used as a robust methodology to explore molecular scaffolds that could act as inhibitors, guiding the development of new drug lead compounds. This review focuses on how the advent of omics and the development and application of bioinformatics strategies conduct a "big-data era" that improves target selection and lead compound identification in a cost-effective and shortened timeline.
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Affiliation(s)
- Federico Serral
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Florencia A Castello
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ezequiel J Sosa
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET, Ciudad Universitaria, Buenos Aires, Argentina
| | - Agustín M Pardo
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET, Ciudad Universitaria, Buenos Aires, Argentina
| | - Miranda Clara Palumbo
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carlos Modenutti
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET, Ciudad Universitaria, Buenos Aires, Argentina
| | - María Mercedes Palomino
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET, Ciudad Universitaria, Buenos Aires, Argentina
| | - Alberto Lazarowski
- Departamento de Bioquímica Clínica, Instituto de Investigaciones en Fisiopatología y Bioquímica Clínica (INFIBIOC), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jerónimo Auzmendi
- Departamento de Bioquímica Clínica, Instituto de Investigaciones en Fisiopatología y Bioquímica Clínica (INFIBIOC), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Pablo Ivan P Ramos
- Centro de Integração de Dados e Conhecimentos para Saúde (CIDACS), Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Brazil
| | - Marisa F Nicolás
- Laboratório Nacional de Computação Científica (LNCC), Petrópolis, Brazil
| | - Adrián G Turjanski
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET, Ciudad Universitaria, Buenos Aires, Argentina
| | - Marcelo A Martí
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET, Ciudad Universitaria, Buenos Aires, Argentina
| | - Darío Fernández Do Porto
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.,Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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12
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Antibiotic Susceptibility of Bartonella Grown in Different Culture Conditions. Pathogens 2021; 10:pathogens10060718. [PMID: 34201011 PMCID: PMC8229624 DOI: 10.3390/pathogens10060718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/04/2021] [Accepted: 06/05/2021] [Indexed: 12/02/2022] Open
Abstract
Bartonellosis is caused by a Gram-negative intracellular bacterium with a zoonotic transmission. The disease, caused by any of several genospecies of Bartonella can range from a benign, self-limited condition to a highly morbid and life-threatening illness. The current standard of care antibiotics are generally effective in acute infection; these include azithromycin or erythromycin, doxycycline, gentamicin, rifampin, and ciprofloxacin. However, treatment of chronic infection remains problematic. We tested six different antibiotics for their ability to stop the growth of Bartonella sp. in the standard insect media and in an enrichment media. All antibiotics (ceftriaxone, doxycycline, gentamycin, azithromycin, ampicillin, and azlocillin) had minimum inhibitory concentrations (MICs) below 0.5 µg/mL in the BAPGM enrichment media but were ineffective at inhibiting growth when the standard insect media was used. Azlocillin was the most potent, with a MIC of 0.01 µg/mL. When Bartonella was tested under intracellular growth conditions, none of the antibiotics were efficacious singly. However, growth inhibition was observed when azlocillin and azithromycin were combined. These studies illustrate the impact of growth medium and intracellular environment on antibiotic susceptibility testing and indicate that azlocillin combined with azithromycin may be an effective drug combination for the treatment of Bartonellosis.
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13
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Farfán-López M, Espinoza-Culupú A, García-de-la-Guarda R, Serral F, Sosa E, Palomino MM, Fernández Do Porto DA. Prioritisation of potential drug targets against Bartonella bacilliformis by an integrative in-silico approach. Mem Inst Oswaldo Cruz 2020; 115:e200184. [PMID: 32785422 PMCID: PMC7416641 DOI: 10.1590/0074-02760200184] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/22/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Carrion's disease (CD) is a neglected biphasic illness caused by Bartonella bacilliformis, a Gram-negative bacteria found in the Andean valleys. The spread of resistant strains underlines the need for novel antimicrobials against B. bacilliformis and related bacterial pathogens. OBJECTIVE The main aim of this study was to integrate genomic-scale data to shortlist a set of proteins that could serve as attractive targets for new antimicrobial discovery to combat B. bacilliformis. METHODS We performed a multidimensional genomic scale analysis of potential and relevant targets which includes structural druggability, metabolic analysis and essentiality criteria to select proteins with attractive features for drug discovery. FINDINGS We shortlisted seventeen relevant proteins to develop new drugs against the causative agent of Carrion's disease. Particularly, the protein products of fabI, folA, aroA, trmFO, uppP and murE genes, meet an important number of desirable features that make them attractive targets for new drug development. This data compendium is freely available as a web server (http://target.sbg.qb.fcen.uba.ar/). MAIN CONCLUSION This work represents an effort to reduce the costs in the first phases of B. bacilliformis drug discovery.
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Affiliation(s)
- Mariella Farfán-López
- Laboratorio de Microbiología Molecular y Biotecnología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Abraham Espinoza-Culupú
- Laboratorio de Microbiología Molecular y Biotecnología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Ruth García-de-la-Guarda
- Laboratorio de Microbiología Molecular y Biotecnología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Federico Serral
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ezequiel Sosa
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - María Mercedes Palomino
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Darío A Fernández Do Porto
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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14
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Complete Genome Sequence of Bartonella bacilliformis Strain KC584 (ATCC 35686). Microbiol Resour Announc 2020; 9:9/1/e01377-19. [PMID: 31896649 PMCID: PMC6940301 DOI: 10.1128/mra.01377-19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Bartonella bacilliformis is the biological agent of Carrion’s disease, a vector-borne, life-threatening human bartonellosis restricted to South America. Here, we report the complete genome sequence of B. bacilliformis KC584 (ATCC 35686). Although it is commonly used as a reference strain, to date, its complete genome has not been published. Bartonella bacilliformis is the biological agent of Carrion’s disease, a vector-borne, life-threatening human bartonellosis restricted to South America. Here, we report the complete genome sequence of B. bacilliformis KC584 (ATCC 35686). Although it is commonly used as a reference strain, to date, its complete genome has not been published.
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15
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Ulloa GM, Vásquez-Achaya F, Gomes C, Del Valle LJ, Ruiz J, Pons MJ, Del Valle Mendoza J. Molecular Detection of Bartonella bacilliformis in Lutzomyia maranonensis in Cajamarca, Peru: A New Potential Vector of Carrion's Disease in Peru? Am J Trop Med Hyg 2019; 99:1229-1233. [PMID: 30226144 DOI: 10.4269/ajtmh.18-0520] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Carrion's disease is a neglected, vector-borne illness that affects Colombia, Ecuador, and especially Peru. The phlebotomine sand flies Lutzomyia verrucarum and Lutzomyia peruensis are the main illness vectors described, although other species may be implicated in endemic areas such as some northern Peruvian regions, in which Carrion's disease vector has not been established. The aim of this study was to evaluate the presence of Bartonella bacilliformis DNA in Lutzomyia maranonensis from Cajamarca, northern Peru. This sand fly has not been defined as a vector yet. Centers for Disease Control and Prevention light traps were used to collect adult phlebotomine sand flies from 2007 to 2008 in the Cajamarca department. Female specimens were identified using morphological keys and were grouped into pools of five sand flies, taking into account district and sampling site (intradomicile or peridomicile). DNA was extracted, and then conventional and real-time polymerase chain reaction (RT-PCR) were performed to detect B. bacilliformis and subsequently confirmed by sequencing. A total of 383 specimens of L. maranonensis species were analyzed. Two of 76 pools were positive for B. bacilliformis by sequencing; all positives pools were from Querocotillo district. In addition, Mesorhizobium spp. were identified in two pools of sand flies, which is an α-proteobacteria phylogenetically very close to B. bacilliformis. This study presents molecular evidence that suggests L. maranonensis is naturally infected by B. bacilliformis in the Cajamarca department. Further research should determine if L. maranonensis is a vector and could transmit B. bacilliformis.
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Affiliation(s)
- Gabriela M Ulloa
- Emerge, Emerging Diseases and Climate Change Research Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru.,Centro de Investigación e Innovación, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - Fernando Vásquez-Achaya
- Centro de Investigación e Innovación, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - Cláudia Gomes
- ISGlobal, Hospital Clínic-Universitat de Barcelona, Barcelona, Spain
| | - Luis J Del Valle
- Centre de Recerca en Ciència i Enginyeria Multiescala de Barcelona, Departament d'Enginyeria Química, Escuela de Ingeniería de Barcelona Este (EEBE), Universitat Politècnica de Catalunya (UPC) BarcelonaTech, Barcelona, Spain
| | - Joaquim Ruiz
- ISGlobal, Hospital Clínic-Universitat de Barcelona, Barcelona, Spain
| | - Maria J Pons
- Centro de Investigación e Innovación, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Peru.,Laboratorio de Microbiología y Genómica Bacteriana, Universidad Científica del Sur, Lima, Peru
| | - Juana Del Valle Mendoza
- Centro de Investigación e Innovación, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
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16
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Lozano-Sardaneta YN, Colunga-Salas P, Sánchez-Montes S, Cáceres AG, Becker I. First Report of Bartonella SP. In Sand Flies (Diptera: Psychodidae: Phlebotominae) From Southern Mexico. JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION 2019; 35:224-227. [PMID: 31647703 DOI: 10.2987/19-6854.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The genus Bartonella encompasses several zoonotic species that cause emerging infectious diseases in humans. These species are transmitted to humans by hematophagous arthropods. In South America, sand flies are the most important vectors of Bartonella bacilliformis, the etiological agent of Verruga peruana. Due to the importance of bartonellosis in public health, the aim of this study was to detect Bartonella in wild populations of phlebotomine sand flies in southern Mexico. In total, 29 sand flies belonging to 6 species were collected. Only 2 specimens were positive, representing a prevalence of 8.69% (2/23). This appears to be the first report of Bartonella sp. in phlebotomine sand flies outside the endemic area of Verruga peruana in South America. Further studies are needed to clarify the relation between this bacterium and sand flies in Mexico.
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17
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Wang C, Fu J, Wang M, Cai Y, Hua X, Du Y, Yang Z, Li Y, Wang Z, Sheng H, Yin N, Liu X, Koehler JE, Yuan C. Bartonella quintana type IV secretion effector BepE-induced selective autophagy by conjugation with K63 polyubiquitin chain. Cell Microbiol 2018; 21:e12984. [PMID: 30463105 DOI: 10.1111/cmi.12984] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 11/08/2018] [Accepted: 11/14/2018] [Indexed: 12/20/2022]
Abstract
Bartonella effector proteins (named Beps) are substrates of VirB type IV secretion system for translocation into host cells evolved in Bartonella spp. Among these, BepE has been shown to protect cells from fragmentation effects triggered by other Beps and to promote in vivo dissemination of bacteria from the dermal site of inoculation to the bloodstream. Bacterial pathogens secreted effectors to modulate the interplay with host autophagy, either to combat autophagy to escape its bactericidal effect or to exploit autophagy to benefit intracellular replication. Here, we reported a distinct phenotype that selective autophagy in host cells is activated as a countermeasure, to attack BepE via conjugation with K63 polyubiquitin chain on BepE. We found that ectopic expression of Bartonella quintana BepE specifically induced punctate structures that colocalised with an autophagy marker (LC3-II) in host cells, in addition to filopodia and membrane ruffle formation. Two tandemly arranged Bartonella Intracellular Delivery (BID) domains in the BepE C-terminus, where ubiquitination of sister pairs of lysine residues was confirmed, were essential to activate host cell autophagy. Multiple polyubiquitin chain linkages of K27, K29, K33, and K63 were found to be conjugated at sites of K222 and K365 on BepE, of which K63 polyubiquitination on BepE K365 determined the selective autophagy (p62/SQSTM1 positive autophagy) independent of the PI3K pathway. Colocalisation of BepE with LAMP1 confirmed the maturation of BepE-induced autophagosomes in which BepE were targeted for degradation. Moreover, host cells employed selective autophagy to counter-attack BepE to rescue cells from BepE-induced endocytosis deficiency.
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Affiliation(s)
- Chunyan Wang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Jiaqi Fu
- Institute of Analytical Chemistry and Synthetic and Functional Biomolecules Center, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Meng Wang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yuhao Cai
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiuguo Hua
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yuming Du
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhibiao Yang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yan Li
- Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Zhenxia Wang
- Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Huiming Sheng
- Tongren hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Na Yin
- Xinhua hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoyun Liu
- Institute of Analytical Chemistry and Synthetic and Functional Biomolecules Center, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Jane E Koehler
- Department of Medicine, Division of Infectious Diseases, and the Microbial Pathogenesis and Host Defense Program, University of California, San Francisco, California, USA
| | - Congli Yuan
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory of Veterinary Medicine, Shanghai Jiao Tong University, Shanghai, China
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18
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Ricapa-Antay F, Diaz-Melon K, Silva-Caso W, Del Valle LJ, Aguilar-Luis MA, Vasquez-Achaya F, Palomares-Reyes C, Weilg P, Li D, Manrique C, Del Valle-Mendoza J. Molecular detection and clinical characteristics of Bartonella bacilliformis, Leptospira spp., and Rickettsia spp. in the Southeastern Peruvian Amazon basin. BMC Infect Dis 2018; 18:618. [PMID: 30514235 PMCID: PMC6280516 DOI: 10.1186/s12879-018-3541-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 11/22/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Acute febrile illness (AFI) represent a significant health challenge in the Peruvian Amazon basin population due to their diverse etiologies and the unavailability of specific on-site diagnostic methods, resulting in underreporting of cases. In Peru, one of the most endemic regions to dengue and leptospirosis is Madre de Dios, a region also endemic to emergent bacterial etiologic agents of AFI, such as bartonellosis and rickettsiosis, whose prevalence is usually underreported. We aimed to molecularly identify the presence of Leptospira spp., Bartonella bacilliformis, and Rickettsia spp. by Polymerase Chain Reaction in serum samples from patients with AFI from Puerto Maldonado-Madre de Dios in Peru. METHODS Serum samples from patients with acute febrile illness were analyzed by real-time PCR for detecting the presence of Bartonella bacilliformis, Leptospira spp. and Rickettsia spp. RESULTS Bartonella bacilliformis was the most prevalent bacteria identified in 21.6% (30/139) of the samples, followed by Leptospira spp. in 11.5% (16/139) and Rickettsia spp. in 6.5% (9/139) of the samples. No co-infections were observed between these bacteria. The most frequent symptoms associated with fever among all groups, were headaches, myalgias, and arthralgias. We found no statistically significant differences in the clinical presentation between patients infected with each bacterium. CONCLUSIONS In a previous study, we shown the presence of dengue, chikungunya, Zika and oropouche virus. We were able to identify these pathogens in 29.5% of all the samples, with chikungunya and OROV as the most frequently found in 9.4 and 8.6% of all the samples, respectively. In this study we show that B. bacilliformis (21.6%), Leptospira spp. (11.5%) and Rickettsia spp. (6.5%) accounted for the main etiologies of AFI in samples from Puerto Maldonado-Madre de Dios, Perú. Our analysis of their clinical presentation, further shows the importance of implementing more sensitive and specific on-site diagnostic tools in the national surveillance programs.This study confirms that the un-specificity of signs and symptoms is not only associated with arboviral infections, but also with the clinical presentation of endemic bacterial infections.
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Affiliation(s)
- Fiorella Ricapa-Antay
- School of Medicine. Faculty of Health Sciences. Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - Katia Diaz-Melon
- School of Medicine. Faculty of Health Sciences. Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - Wilmer Silva-Caso
- School of Medicine. Faculty of Health Sciences. Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru.,Laboratorio de Biología Molecular. Instituto de Investigación Nutricional, Lima, Peru
| | - Luis J Del Valle
- Barcelona Research Center for Multiscale Science and Engineering, Departament d'Enginyeria Química, EEBE, Universidad Politécnica de Catalunya (UPC), Barcelona Tech, Barcelona, Spain
| | - Miguel Angel Aguilar-Luis
- School of Medicine. Faculty of Health Sciences. Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru.,Laboratorio de Biología Molecular. Instituto de Investigación Nutricional, Lima, Peru.,Instituto de Investigación de Enfermedades Infecciosas, Lima, Peru
| | - Fernando Vasquez-Achaya
- School of Medicine. Faculty of Health Sciences. Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru.,Laboratorio de Biología Molecular. Instituto de Investigación Nutricional, Lima, Peru
| | - Carlos Palomares-Reyes
- School of Medicine. Faculty of Health Sciences. Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru.,Laboratorio de Biología Molecular. Instituto de Investigación Nutricional, Lima, Peru
| | - Pablo Weilg
- School of Medicine. Faculty of Health Sciences. Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - Dongmei Li
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, China
| | - Carlos Manrique
- Dirección Regional de Salud Madre de Dios (DIRESA-Madre de Dios), Puerto Maldonado, Madre de Dios, Peru
| | - Juana Del Valle-Mendoza
- School of Medicine. Faculty of Health Sciences. Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru. .,Laboratorio de Biología Molecular. Instituto de Investigación Nutricional, Lima, Peru.
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19
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Vieira CB, Praça YR, Bentes KLDS, Santiago PB, Silva SMM, Silva GDS, Motta FN, Bastos IMD, de Santana JM, de Araújo CN. Triatomines: Trypanosomatids, Bacteria, and Viruses Potential Vectors? Front Cell Infect Microbiol 2018; 8:405. [PMID: 30505806 PMCID: PMC6250844 DOI: 10.3389/fcimb.2018.00405] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 10/29/2018] [Indexed: 12/17/2022] Open
Abstract
Triatominae bugs are the vectors of Chagas disease, a major concern to public health especially in Latin America, where vector-borne Chagas disease has undergone resurgence due mainly to diminished triatomine control in many endemic municipalities. Although the majority of Triatominae species occurs in the Americas, species belonging to the genus Linshcosteus occur in India, and species belonging to the Triatoma rubrofasciata complex have been also identified in Africa, the Middle East, South-East Asia, and in the Western Pacific. Not all of Triatominae species have been found to be infected with Trypanosoma cruzi, but the possibility of establishing vector transmission to areas where Chagas disease was previously non-endemic has increased with global population mobility. Additionally, the worldwide distribution of triatomines is concerning, as they are able to enter in contact and harbor other pathogens, leading us to wonder if they would have competence and capacity to transmit them to humans during the bite or after successful blood feeding, spreading other infectious diseases. In this review, we searched the literature for infectious agents transmitted to humans by Triatominae. There are reports suggesting that triatomines may be competent vectors for pathogens such as Serratia marcescens, Bartonella, and Mycobacterium leprae, and that triatomine infection with other microrganisms may interfere with triatomine-T. cruzi interactions, altering their competence and possibly their capacity to transmit Chagas disease.
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Affiliation(s)
- Caroline Barreto Vieira
- Programa de Pós-Graduação em Ciências Médicas, Faculdade de Medicina, Universidade de Brasília, Brasília, Brazil
| | - Yanna Reis Praça
- Programa de Pós-Graduação em Ciências Médicas, Faculdade de Medicina, Universidade de Brasília, Brasília, Brazil
| | - Kaio Luís da Silva Bentes
- Laboratório de Interação Patógeno-Hospedeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Universidade de Brasília, Brasília, Brazil
| | - Paula Beatriz Santiago
- Laboratório de Interação Patógeno-Hospedeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Universidade de Brasília, Brasília, Brazil
| | - Sofia Marcelino Martins Silva
- Laboratório de Interação Patógeno-Hospedeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Universidade de Brasília, Brasília, Brazil
| | - Gabriel dos Santos Silva
- Laboratório de Interação Patógeno-Hospedeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Universidade de Brasília, Brasília, Brazil
| | - Flávia Nader Motta
- Laboratório de Interação Patógeno-Hospedeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Universidade de Brasília, Brasília, Brazil
- Faculdade de Ceilândia, Universidade de Brasília, Brasília, Brazil
| | - Izabela Marques Dourado Bastos
- Laboratório de Interação Patógeno-Hospedeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Universidade de Brasília, Brasília, Brazil
| | - Jaime Martins de Santana
- Laboratório de Interação Patógeno-Hospedeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Universidade de Brasília, Brasília, Brazil
| | - Carla Nunes de Araújo
- Laboratório de Interação Patógeno-Hospedeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Universidade de Brasília, Brasília, Brazil
- Faculdade de Ceilândia, Universidade de Brasília, Brasília, Brazil
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20
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Del Valle-Mendoza J, Rojas-Jaimes J, Vásquez-Achaya F, Aguilar-Luis MA, Correa-Nuñez G, Silva-Caso W, Lescano AG, Song X, Liu Q, Li D. Molecular identification of Bartonella bacilliformis in ticks collected from two species of wild mammals in Madre de Dios: Peru. BMC Res Notes 2018; 11:405. [PMID: 29941013 PMCID: PMC6019227 DOI: 10.1186/s13104-018-3518-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/19/2018] [Indexed: 01/21/2023] Open
Abstract
Objective To study the presence of Bartonella bacilliformis in ticks collected from two wild mammals in Madre de Dios, Peru. Results A total of 110 ticks were collected. Among the 43 Amblyomma spp. extracted from the 3 Tapirus terrestris only 3 were positive for B. bacilliformis. In addition, 12 out of the 67 Rhipicephalus (Boophilus) microplus obtained from the 3 Pecari tajacu were positive for B. bacilliformis. For the first time B. bacilliformis have been detected in arthropods other than Lutzomyia spp. Further studies are required to elucidate the possible role of ticks in the spread of South American Bartonellosis.
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Affiliation(s)
- Juana Del Valle-Mendoza
- School of Medicine, Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru. .,Laboratorio de Biología Molecular, Instituto de Investigación Nutricional, Lima, Peru.
| | - Jesús Rojas-Jaimes
- Laboratorio de Biología Molecular y Celular, Escuela de Medicina Humana, Universidad Científica del Sur, Lima, Peru
| | - Fernando Vásquez-Achaya
- School of Medicine, Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - Miguel Angel Aguilar-Luis
- School of Medicine, Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru.,Laboratorio de Biología Molecular, Instituto de Investigación Nutricional, Lima, Peru.,Instituto de Investigación de Enfermedades Infecciosas, Lima, Peru
| | - Germán Correa-Nuñez
- Departamento Académico de Ciencias Básicas, Universidad Nacional Amazónica de Madre de Dios, Puerto Maldonado, Peru
| | - Wilmer Silva-Caso
- School of Medicine, Research and Innovation Centre of the Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - Andrés G Lescano
- Emerge, Emerging Diseases and Climate Change Research Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Xiuping Song
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), P.O. Box5, Changping District, Beijing, 102206, People's Republic of China
| | - Qiyong Liu
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), P.O. Box5, Changping District, Beijing, 102206, People's Republic of China
| | - Dongmei Li
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), P.O. Box5, Changping District, Beijing, 102206, People's Republic of China.
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21
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Mullins KE, Hang J, Clifford RJ, Onmus-Leone F, Yang Y, Jiang J, Leguia M, Kasper MR, Maguina C, Lesho EP, Jarman RG, Richards A, Blazes D. Whole-Genome Analysis of Bartonella ancashensis, a Novel Pathogen Causing Verruga Peruana, Rural Ancash Region, Peru. Emerg Infect Dis 2018; 23:430-438. [PMID: 28221130 PMCID: PMC5382735 DOI: 10.3201/eid2303.161476] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The genus Bartonella contains >40 species, and an increasing number of these Bartonella species are being implicated in human disease. One such pathogen is Bartonella ancashensis, which was isolated in blood samples from 2 patients living in Caraz, Peru, during a clinical trial of treatment for bartonellosis. Three B. ancashensis strains were analyzed by using whole-genome restriction mapping and high-throughput pyrosequencing. Genome-wide comparative analysis of Bartonella species showed that B. ancashensis has features seen in modern and ancient lineages of Bartonella species and is more related to B. bacilliformis. The divergence between B. ancashensis and B. bacilliformis is much greater than what is seen between known Bartonella genetic lineages. In addition, B. ancashensis contains type IV secretion system proteins, which are not present in B. bacilliformis. Whole-genome analysis indicates that B. ancashensis might represent a distinct Bartonella lineage phylogenetically related to B. bacilliformis.
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Abstract
Carrion's disease (CD) is a neglected biphasic vector-borne illness related to Bartonella bacilliformis. It is found in the Andean valleys and is transmitted mainly by members of the Lutzomyia genus but also by blood transfusions and from mother to child. The acute phase, Oroya fever, presents severe anemia and fever. The lethality is high in the absence of adequate treatment, despite the organism being susceptible to most antibiotics. Partial immunity is developed after infection by B. bacilliformis, resulting in high numbers of asymptomatic carriers. Following infection there is the chronic phase, Peruvian warts, involving abnormal proliferation of the endothelial cells. Despite potentially being eradicable, CD has been expanded due to human migration and geographical expansion of the vector. Moreover, in vitro studies have demonstrated the risk of the development of antimicrobial resistance. These findings, together with the description of new Bartonella species producing CD-like infections, the presence of undescribed potential vectors in new areas, the lack of adequate diagnostic tools and knowledge of the immunology and bacterial pathogenesis of CD, and poor international visibility, have led to the risk of increasing the potential expansion of resistant strains which will challenge current treatment schemes as well as the possible appearance of CD in areas where it is not endemic.
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Affiliation(s)
- Cláudia Gomes
- Institute for Global Health, Barcelona Centre for International Health Research, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Joaquim Ruiz
- Institute for Global Health, Barcelona Centre for International Health Research, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
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23
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Scherler A, Jacquier N, Greub G. Chlamydiales, Anaplasma and Bartonella: persistence and immune escape of intracellular bacteria. Microbes Infect 2017; 20:416-423. [PMID: 29162422 DOI: 10.1016/j.micinf.2017.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/06/2017] [Accepted: 11/07/2017] [Indexed: 12/25/2022]
Abstract
Intracellular bacteria, such as Chlamydiales, Anaplasma or Bartonella, need to persist inside their host in order to complete their developmental cycle and to infect new hosts. In order to escape from the host immune system, intracellular bacteria have developed diverse mechanisms of persistence, which can directly impact the health of their host.
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Affiliation(s)
- Aurélie Scherler
- Centre for Research on Intracellular Bacteria, Institute of Microbiology, University Hospital Centre and University of Lausanne, Lausanne, Switzerland
| | - Nicolas Jacquier
- Centre for Research on Intracellular Bacteria, Institute of Microbiology, University Hospital Centre and University of Lausanne, Lausanne, Switzerland
| | - Gilbert Greub
- Centre for Research on Intracellular Bacteria, Institute of Microbiology, University Hospital Centre and University of Lausanne, Lausanne, Switzerland.
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24
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Pons MJ, Gomes C, Aguilar R, Barrios D, Aguilar-Luis MA, Ruiz J, Dobaño C, del Valle-Mendoza J, Moncunill G. Immunosuppressive and angiogenic cytokine profile associated with Bartonella bacilliformis infection in post-outbreak and endemic areas of Carrion's disease in Peru. PLoS Negl Trop Dis 2017. [PMID: 28628613 PMCID: PMC5491314 DOI: 10.1371/journal.pntd.0005684] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Analysis of immune responses in Bartonella bacilliformis carriers are needed to understand acquisition of immunity to Carrion's disease and may allow identifying biomarkers associated with bacterial infection and disease phases. Serum samples from 144 healthy subjects from 5 villages in the North of Peru collected in 2014 were analyzed. Four villages had a Carrion's disease outbreak in 2013, and the other is a traditionally endemic area. Thirty cytokines, chemokines and growth factors were determined in sera by fluorescent bead-based quantitative suspension array technology, and analyzed in relation to available data on bacteremia quantified by RT-PCR, and IgM and IgG levels measured by ELISA against B. bacilliformis lysates. The presence of bacteremia was associated with low concentrations of HGF (p = 0.005), IL-15 (p = 0.002), IL-6 (p = 0.05), IP-10 (p = 0.008), MIG (p = 0.03) and MIP-1α (p = 0.03). In multi-marker analysis, the same and further TH1-related and pro-inflammatory biomarkers were inversely associated with infection, whereas angiogenic chemokines and IL-10 were positively associated. Only EGF and eotaxin showed a moderate positive correlation with bacteremia. IgM seropositivity, which reflects a recent acute infection, was associated with lower levels of eotaxin (p = 0.05), IL-6 (p = 0.001), and VEGF (p = 0.03). Only GM-CSF and IL-10 concentrations were positively associated with higher levels of IgM (p = 0.01 and p = 0.007). Additionally, IgG seropositivity and levels were associated with high levels of angiogenic markers VEGF (p = 0.047) and eotaxin (p = 0.006), respectively. Our findings suggest that B. bacilliformis infection causes immunosuppression, led in part by overproduction of IL-10. This immunosuppression probably contributes to the chronicity of asymptomatic infections favoring B. bacilliformis persistence in the host, allowing the subsequent transmission to the vector. In addition, angiogenic markers associated with bacteremia and IgG levels may be related to the induction of endothelial cell proliferation in cutaneous lesions during chronic infections, being possible candidate biomarkers of asymptomatic infections.
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Affiliation(s)
- Maria J. Pons
- Centro de Investigación e Innovación de la Facultad de Ciencias de la Salud de la Universidad Peruana de Ciencias Aplicadas, Lima, Perú
- Instituto de Investigación Nutricional, Lima, Perú
| | - Cláudia Gomes
- ISGlobal, Barcelona Centre for International Health Research, Hospital Clínic - Universitat de Barcelona, Catalonia, Spain
| | - Ruth Aguilar
- ISGlobal, Barcelona Centre for International Health Research, Hospital Clínic - Universitat de Barcelona, Catalonia, Spain
| | - Diana Barrios
- ISGlobal, Barcelona Centre for International Health Research, Hospital Clínic - Universitat de Barcelona, Catalonia, Spain
| | - Miguel Angel Aguilar-Luis
- Centro de Investigación e Innovación de la Facultad de Ciencias de la Salud de la Universidad Peruana de Ciencias Aplicadas, Lima, Perú
- Instituto de Investigación Nutricional, Lima, Perú
| | - Joaquim Ruiz
- ISGlobal, Barcelona Centre for International Health Research, Hospital Clínic - Universitat de Barcelona, Catalonia, Spain
| | - Carlota Dobaño
- ISGlobal, Barcelona Centre for International Health Research, Hospital Clínic - Universitat de Barcelona, Catalonia, Spain
| | - Juana del Valle-Mendoza
- Centro de Investigación e Innovación de la Facultad de Ciencias de la Salud de la Universidad Peruana de Ciencias Aplicadas, Lima, Perú
- Instituto de Investigación Nutricional, Lima, Perú
- * E-mail: (GM); (JdV)
| | - Gemma Moncunill
- ISGlobal, Barcelona Centre for International Health Research, Hospital Clínic - Universitat de Barcelona, Catalonia, Spain
- * E-mail: (GM); (JdV)
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Clinical Profile and Visual Outcome of Ocular Bartonellosis in Malaysia. J Trop Med 2017; 2017:7946123. [PMID: 28265290 PMCID: PMC5318637 DOI: 10.1155/2017/7946123] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 12/20/2016] [Accepted: 01/10/2017] [Indexed: 12/13/2022] Open
Abstract
Background. Ocular bartonellosis can present in various ways, with variable visual outcome. There is limited data on ocular bartonellosis in Malaysia. Objective. We aim to describe the clinical presentation and visual outcome of ocular bartonellosis in Malaysia. Materials and Methods. This was a retrospective review of patients treated for ocular bartonellosis in two ophthalmology centers in Malaysia between January 2013 and December 2015. The diagnosis was based on clinical features, supported by a positive Bartonella spp. serology. Results. Of the 19 patients in our series, females were predominant (63.2%). The mean age was 29.3 years. The majority (63.2%) had unilateral involvement. Five patients (26.3%) had a history of contact with cats. Neuroretinitis was the most common presentation (62.5%). Azithromycin was the antibiotic of choice (42.1%). Concurrent systemic corticosteroids were used in approximately 60% of cases. The presenting visual acuity was worse than 6/18 in approximately 60% of eyes; on final review, 76.9% of eyes had a visual acuity better than 6/18. Conclusion. Ocular bartonellosis tends to present with neuroretinitis. Azithromycin is a viable option for treatment. Systemic corticosteroids may be considered in those with poor visual acuity on presentation.
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26
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Detection of a Potential New Bartonella Species "Candidatus Bartonella rondoniensis" in Human Biting Kissing Bugs (Reduviidae; Triatominae). PLoS Negl Trop Dis 2017; 11:e0005297. [PMID: 28095503 PMCID: PMC5271407 DOI: 10.1371/journal.pntd.0005297] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 01/27/2017] [Accepted: 01/02/2017] [Indexed: 11/19/2022] Open
Abstract
Background Among the Reduviidae family, triatomines are giant blood-sucking bugs. They are well known in Central and South America where they transmit Trypanosoma cruzi to mammals, including humans, through their feces. This parasitic protozoan is the causative agent of Chagas disease, a major public health issue in endemic areas. Because of the medical and economic impact of Chagas disease, the presence of other arthropod-borne pathogens in triatomines was rarely investigated. Methodology/Principal findings In this study, seven triatomines species involved in the transmission of T. cruzi were molecularly screened for the presence of known pathogens generally associated with arthropods, such as Rickettsia, Bartonella, Anaplasmataceae, Borrelia species and Coxiella burnetii. Of all included triatomine species, only Eratyrus mucronatus specimens tested positive for Bartonella species for 56% of tested samples. A new genotype of Bartonella spp. was detected in 13/23 Eratyrus mucronatus specimens, an important vector of T. cruzi to humans. This bacterium was further characterized by sequencing fragments of the ftsZ, gltA and rpoB genes. Depending on the targeted gene, this agent shares 84% to 91% of identity with B. bacilliformis, the agent of Carrion’s disease, a deadly sandfly-borne infectious disease endemic in South America. It is also closely related to animal pathogens such as B. bovis and B. chomelii. Conclusions As E. mucronatus is an invasive species that occasionally feeds on humans, the presence of potentially pathogenic Bartonella-infected bugs could present another risk for human health, along with the T. cruzi issue. Triatomines are hematophagous insects including vectors of T. cruzi, the agent of Chagas disease, a huge public health issue, especially in South America. Whether these arthropods carry other pathogenic microorganisms is currently unknown. We investigated the presence of different arthropod-borne pathogens, including Bartonella spp., by quantitative PCR. Bartonella species were identified using ftsZ, gltA and rpoB gene sequencing and a new genotype of Bartonella spp. was detected in Eratyrus mucronatus specimens, an important vector of T. cruzi to humans. This agent is closely related to several human and animal pathogens. Depending on the gene fragment used, this agent shares 84% to 91% of identity with B. bacilliformis, the agent of the deadly Carrion’s disease. The possibility of transmission of potentially pathogenic bacteria could be an additional threat to human health since E. mucronatus bugs are more and more anthropophilic.
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Rapid, Sensitive Detection of Bartonella quintana by Loop-Mediated Isothermal Amplification of the groEL Gene. Int J Mol Sci 2016; 17:ijms17121902. [PMID: 27916953 PMCID: PMC5187759 DOI: 10.3390/ijms17121902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 11/08/2016] [Accepted: 11/10/2016] [Indexed: 01/27/2023] Open
Abstract
Trench fever, caused by Bartonella quintana, is recognized as a re-emerging and neglected disease. Rapid and sensitive detection approaches are urgently required to monitor and help control B. quintana infections. Here, loop-mediated isothermal amplification (LAMP), which amplifies target DNA at a fixed temperature with high sensitivity, specificity and rapidity, was employed to detect B. quintana. Thirty-six strains, including 10 B. quintana, 13 other Bartonella spp., and 13 other common pathogens, were applied to verify and evaluate the LAMP assay. The specificity of the LAMP assay was 100%, and the limit of detection was 125 fg/reaction. The LAMP assay was compared with qPCR in the examination of 100 rhesus and 20 rhesus-feeder blood samples; the diagnostic accuracy was found to be 100% when LAMP was compared to qPCR, but the LAMP assay was significantly more sensitive (p < 0.05). Thus, LAMP methodology is a useful for diagnosis of trench fever in humans and primates, especially in low-resource settings, because of its rapid, sensitive detection that does not require sophisticated equipment.
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28
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Gomes C, Pons MJ, del Valle Mendoza J, Ruiz J. Carrion's disease: an eradicable illness? Infect Dis Poverty 2016; 5:105. [PMID: 27903286 PMCID: PMC5131403 DOI: 10.1186/s40249-016-0197-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 09/29/2016] [Indexed: 12/21/2022] Open
Abstract
Carrion's disease is a neglected tropical disease caused by Bartonella bacilliformis, a vector-borne pathogen restricted to the Andean valleys of Peru, Ecuador and Colombia. Carrion's disease is a biphasic illness; in the acute phase the case-fatality rate can be as high as 88 %, related to high parasitemia, arriving to almost all erythrocytes, and secondary bacterial infections close related with the development of transient immunosuppression in the earlier illness phases. In addition, there are an undefined number of asymptomatic carriers that are reservoirs of the etiological agent of Carrion's disease in endemic areas, they make take into account due to they are the perpetuators of this disease. The actual scenario of Carrion's disease, in which the illness is arriving to new areas, due to the expansion of the vector's distribution, suggests that now may be a crucial time to design a strategy focusing on its elimination.
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Affiliation(s)
- Cláudia Gomes
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic – Universitat de Barcelona, Barcelona, Spain
| | - Maria J. Pons
- Centro de Investigación e Innovación de la Facultad de Ciencias de la Salud de la Universidad Peruana de Ciencias Aplicadas, Avda. San Marcos cuadra 2, Chorrillos, Lima Peru
| | - Juana del Valle Mendoza
- Centro de Investigación e Innovación de la Facultad de Ciencias de la Salud de la Universidad Peruana de Ciencias Aplicadas, Avda. San Marcos cuadra 2, Chorrillos, Lima Peru
| | - Joaquim Ruiz
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic – Universitat de Barcelona, Barcelona, Spain
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30
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Gomes C, Martínez-Puchol S, Ruiz-Roldán L, Pons MJ, Del Valle Mendoza J, Ruiz J. Development and characterisation of highly antibiotic resistant Bartonella bacilliformis mutants. Sci Rep 2016; 6:33584. [PMID: 27667026 PMCID: PMC5035977 DOI: 10.1038/srep33584] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 08/31/2016] [Indexed: 01/31/2023] Open
Abstract
The objective was to develop and characterise in vitro Bartonella bacilliformis antibiotic resistant mutants. Three B. bacilliformis strains were plated 35 or 40 times with azithromycin, chloramphenicol, ciprofloxacin or rifampicin discs. Resistance-stability was assessed performing 5 serial passages without antibiotic pressure. MICs were determined with/without Phe-Arg-β-Napthylamide and artesunate. Target alterations were screened in the 23S rRNA, rplD, rplV, gyrA, gyrB, parC, parE and rpoB genes. Chloramphenicol and ciprofloxacin resistance were the most difficult and easiest (>37.3 and 10.6 passages) to be selected, respectively. All mutants but one selected with chloramphenicol achieved high resistance levels. All rifampicin, one azithromycin and one ciprofloxacin mutants did not totally revert when cultured without antibiotic pressure. Azithromycin resistance was related to L4 substitutions Gln-66 → Lys or Gly-70 → Arg; L4 deletion Δ62–65 (Lys-Met-Tyr-Lys) or L22 insertion 83::Val-Ser-Glu-Ala-His-Val-Gly-Lys-Ser; in two chloramphenicol-resistant mutants the 23S rRNA mutation G2372A was detected. GyrA Ala-91 → Val and Asp-95 → Gly and GyrB Glu474 → Lys were detected in ciprofloxacin-resistant mutants. RpoB substitutions Gln-527 → Arg, His-540 → Tyr and Ser-545 → Phe plus Ser-588 → Tyr were detected in rifampicin-resistant mutants. In 5 mutants the effect of efflux pumps on resistance was observed. Antibiotic resistance was mainly related to target mutations and overexpression of efflux pumps, which might underlie microbiological failures during treatments.
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Affiliation(s)
- Cláudia Gomes
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Sandra Martínez-Puchol
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Lidia Ruiz-Roldán
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Maria J Pons
- School of Medicine, Research Center and Innovation of the Health Sciences Faculty, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
| | - Juana Del Valle Mendoza
- School of Medicine, Research Center and Innovation of the Health Sciences Faculty, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru.,Instituto de Investigación Nutricional, Lima, Peru
| | - Joaquim Ruiz
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
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Gomes C, Palma N, Pons MJ, Magallón-Tejada A, Sandoval I, Tinco-Valdez C, Gutarra C, del Valle-Mendoza J, Ruiz J, Matsuoka M. Succinyl-CoA Synthetase: New Antigen Candidate of Bartonella bacilliformis. PLoS Negl Trop Dis 2016; 10:e0004989. [PMID: 27627803 PMCID: PMC5023120 DOI: 10.1371/journal.pntd.0004989] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 08/19/2016] [Indexed: 11/29/2022] Open
Abstract
Background Bartonella bacilliformis is the causative agent of Carrion’s disease, a neglected illness with mortality rates of 40–85% in the absence of treatment. The lack of a diagnostic technique to overcome misdiagnosis and treat asymptomatic carriers is of note. This study aimed to identify new B. bacilliformis antigenic candidates that could lead to a new diagnostic tool able to be implemented in endemic rural areas. Methodology/Principal Findings Blood (n = 198) and serum (n = 177) samples were collected in northern Peru. Clinical data were recorded. Specific 16S rRNA amplification by RT-PCR, IFA and ELISA for IgM/IgG with whole cells as antigens was done. Western blot analysis and N-terminal amino acid sequencing detected seroreactive proteins. ELISAs for IgM/IgG for the antigenic candidates were performed. Of the population 33.3% reported at least one symptom compatible with Carrion’s disease; 25.4% (IFA), 27.1% (ELISA-IgG), 33.9% (ELISA-IgM) and 38.9% (RT-PCR) of samples were positive. Four proteins were considered potential antigenic candidates, including two new antigenic candidates, succinyl-CoA synthetase subunit α (SCS-α) and succinyl-CoA synthetase subunit β (SCS-β). On Western blot both Pap31 and SCS-α interacted with IgM, while GroEL and SCS-β interacted with IgG. The presence of specific antibodies against the antigenic candidates varied from 34.5% (IgG against SCS-α) to 97.2% (IgM against Pap31). Conclusions/Significance RT-PCR and the high levels of positivity for specific ELISAs demonstrate high levels of B. bacilliformis exposure and asymptomatic carriers among inhabitants. The new antigens identified might be used as a new rapid diagnostic tool to diagnose acute Carrion’s disease and identify asymptomatic carriers. B. bacilliformis is a neglected pathogen causing Carrion’s disease, a febrile illness with two distinct phases, the acute so-called Oroya fever that can be life-threatening, and the chronic so-called Peruvian wart. This illness is currently limited to poor inhabitants of Andean valleys of Ecuador, Colombia and Peru and for this reason is understudied. One of the most significant limitations is the lack of an adequate diagnostic tool able to be implemented in rural areas. It is imperative to unequivocally detect cases of Carrion’s disease as well as identify asymptomatic carriers who perpetuate the illness. The present study describes the identification of 4 antigenic candidates potentially useful in the future development of a rapid diagnostic test. Moreover, 2 of these candidates have not been described in the literature. Additionally, four post-outbreak and one endemic community were studied and characterized. The identification of new antigens is essential for the development of a cheap, sensitive diagnostic tool, able to be implemented in low-income areas.
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Affiliation(s)
- Cláudia Gomes
- ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
- * E-mail:
| | - Noemí Palma
- ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Maria J. Pons
- Centro de Investigación e Innovación, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - Ariel Magallón-Tejada
- ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | | | - Carmen Tinco-Valdez
- Centro de Investigación e Innovación, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
- Instituto de Investigación Nutricional, Lima, Peru
| | | | - Juana del Valle-Mendoza
- Centro de Investigación e Innovación, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
- Instituto de Investigación Nutricional, Lima, Peru
| | - Joaquim Ruiz
- ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
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Sanchez Clemente N, Ugarte-Gil C, Solorzano N, Maguiña C, Moore D. An Outbreak of Bartonella bacilliformis in an Endemic Andean Community. PLoS One 2016; 11:e0150525. [PMID: 26991495 PMCID: PMC4798250 DOI: 10.1371/journal.pone.0150525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 02/15/2016] [Indexed: 11/24/2022] Open
Abstract
Background Bartonellosis affects small Andean communities in Peru, Colombia and Ecuador. Research in this area has been limited. Methods Retrospective review of 191 cases of bartonellosis managed in Caraz District Hospital, Peru, during the last outbreak (2003). Results The majority of cases (65%) were 14 years old and younger. There was a peak in acute cases after the rainy season; chronic cases presented more constantly throughout the year. The sensitivity of blood smear against blood culture in acute disease was 25%. The most commonly used treatment for chronic disease was rifampicin; chloramphenicol was used to treat most acute cases. Complications arose in 6.8% and there were no deaths. Conclusions Diagnostic and treatment algorithms for acute and chronic bartonellosis have been developed without a strong evidence base. Preparation of ready-to-go operational research protocols for future outbreaks would strengthen the evidence base for diagnostic and treatment strategies and enhance opportunities for control.
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Affiliation(s)
| | - Cesar Ugarte-Gil
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano, Heredia, Lima, Peru
| | | | - Ciro Maguiña
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano, Heredia, Lima, Peru
| | - David Moore
- London School of Hygiene and Tropical Medicine, London, United Kingdom
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Gomes C, Martinez-Puchol S, Pons MJ, Bazán J, Tinco C, del Valle J, Ruiz J. Evaluation of PCR Approaches for Detection of Bartonella bacilliformis in Blood Samples. PLoS Negl Trop Dis 2016; 10:e0004529. [PMID: 26959642 PMCID: PMC4784731 DOI: 10.1371/journal.pntd.0004529] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 02/18/2016] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The lack of an effective diagnostic tool for Carrion's disease leads to misdiagnosis, wrong treatments and perpetuation of asymptomatic carriers living in endemic areas. Conventional PCR approaches have been reported as a diagnostic technique. However, the detection limit of these techniques is not clear as well as if its usefulness in low bacteriemia cases. The aim of this study was to evaluate the detection limit of 3 PCR approaches. METHODOLOGY/PRINCIPAL FINDINGS We determined the detection limit of 3 different PCR approaches: Bartonella-specific 16S rRNA, fla and its genes. We also evaluated the viability of dry blood spots to be used as a sample transport system. Our results show that 16S rRNA PCR is the approach with a lowest detection limit, 5 CFU/μL, and thus, the best diagnostic PCR tool studied. Dry blood spots diminish the sensitivity of the assay. CONCLUSIONS/SIGNIFICANCE From the tested PCRs, the 16S rRNA PCR-approach is the best to be used in the direct blood detection of acute cases of Carrion's disease. However its use in samples from dry blood spots results in easier management of transport samples in rural areas, a slight decrease in the sensitivity was observed. The usefulness to detect by PCR the presence of low-bacteriemic or asymptomatic carriers is doubtful, showing the need to search for new more sensible techniques.
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Affiliation(s)
- Cláudia Gomes
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Sandra Martinez-Puchol
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Maria J. Pons
- Faculty of Health Sciences, School of Medicine, Centro de Investigación de la Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
| | - Jorge Bazán
- Dirección Regional de Salud de Cajamarca (DIRESA-Cajamarca), Cajamarca, Peru
| | - Carmen Tinco
- Faculty of Health Sciences, School of Medicine, Centro de Investigación de la Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
| | - Juana del Valle
- Faculty of Health Sciences, School of Medicine, Centro de Investigación de la Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
- Instituto de Investigación Nutricional, Lima, Peru
- * E-mail: ; (JR); (JdV)
| | - Joaquim Ruiz
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
- * E-mail: ; (JR); (JdV)
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Pons MJ, Silva-Caso W, del Valle-Mendoza J, Ruiz J. Multi-Locus Sequence Typing of Bartonella bacilliformis DNA Performed Directly from Blood of Patients with Oroya's Fever During a Peruvian Outbreak. PLoS Negl Trop Dis 2016; 10:e0004391. [PMID: 26824740 PMCID: PMC4732615 DOI: 10.1371/journal.pntd.0004391] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 12/23/2015] [Indexed: 11/23/2022] Open
Abstract
Background Bartonella bacilliformis is the etiological agent of Carrion’s disease, a neglected tropical poverty-linked illness. This infection is endemic of Andean regions and it is estimated that approximately 1.7 million of South Americans are at risk. This bacterium is a fastidious slow growing microorganism, which is difficult and cumbersome to isolate from clinical sources, thereby hindering the availability of phylogenetic relationship of clinical samples. The aim of this study was to perform Multi Locus Sequence Typing of B. bacilliformis directly in blood from patients diagnosed with Oroya fever during an outbreak in Northern Peru. Methodology/Principal Findings DNA extracted among blood samples from patients diagnosed with Oroya’s fever were analyzed with MLST, with the amplification of 7 genetic loci (ftsZ, flaA, ribC, rnpB, rpoB, bvrR and groEL) and a phylogenetic analysis of the different Sequence Types (ST) was performed. A total of 4 different ST were identified. The most frequently found was ST1 present in 66% of samples. Additionally, two samples presented a new allelic profile, belonging to new STs (ST 9 and ST 10), which were closely related to ST1. Conclusions/Significance The present data demonstrate that B. bacilliformis MLST studies may be possible directly from blood samples, being a promising approach for epidemiological studies. During the outbreak the STs of B. bacilliformis were found to be heterogeneous, albeit closely related, probably reflecting the evolution from a common ancestor colonizing the area. Additional studies including new samples and areas are needed, in order to obtain better knowledge of phylogenetic scenario B. bacilliformis. The bacteria Bartonella bacilliformis is the etiological agent of Carrion’s disease, which is a neglected poverty-related disease, related to Mountain Andean valleys of Peru, Colombia and Ecuador. This disease, in absence of treatment presents a high mortality during the acute phase, called Oroya’s Fever. The second phase is characterized by the development of dermal eruptions, known as “Verruga peruana” (Peruvian wart). This bacterium is a fastidious slow growing microorganism, being difficult and cumbersome to isolate from clinical sources. Then, the available data about phylogenetic relationship in clinical samples are really scarce, but suggesting high variability. The aim of the study was to perform direct blood analysis of B. bacilliformis Multi Locus Sequence Typing (MLST), a genotyping tool, in patients with Oroya fever during an outbreak. The present study demonstrates that the direct blood PCR, followed by nucleotide sequencing and MLST is a technique useful in the phylogenic characterization of this fastidious microorganism endemic from Andean regions. In this study, we demonstrate that the outbreak of Oroya’s fever was caused by closely related Sequence Typing (ST) microorganisms and, additionally, new STs have been described.
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Affiliation(s)
- Maria J. Pons
- Centro de Investigación de la Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
| | - Wilmer Silva-Caso
- Centro de Investigación de la Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
| | - Juana del Valle-Mendoza
- Centro de Investigación de la Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
- * E-mail: , (JR); (JdV)
| | - Joaquim Ruiz
- ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic – Universitat de Barcelona, Spain
- * E-mail: , (JR); (JdV)
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Carrion's disease after blood transfusion. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2015; 14:527-530. [PMID: 26674821 DOI: 10.2450/2015.0036-15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 07/07/2015] [Indexed: 11/21/2022]
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Mullins KE, Hang J, Jiang J, Leguia M, Kasper MR, Ventosilla P, Maguiña C, Jarman RG, Blazes D, Richards AL. Description of Bartonella ancashensis sp. nov., isolated from the blood of two patients with verruga peruana. Int J Syst Evol Microbiol 2015; 65:3339-3343. [DOI: 10.1099/ijsem.0.000416] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three novel isolates of the genus Bartonella were recovered from the blood of two patients enrolled in a clinical trial for the treatment of chronic stage Bartonella bacilliformis infection (verruga peruana) in Caraz, Ancash, Peru. The isolates were initially characterized by sequencing a fragment of the gltA gene, and found to be disparate from B. bacilliformis. The isolates were further characterized using phenotypic and genotypic methods, and found to be genetically identical to each other for the genes assessed, but distinct from any known species of the genus Bartonella, including the closest relative B. bacilliformis. Other characteristics of the isolates, including their morphology, microscopic and biochemical properties, and growth patterns, were consistent with members of the genus Bartonella. Based on these results, we conclude that these three isolates are members of a novel species of the genus Bartonella for which we propose the name Bartonella ancashensis sp. nov. (type strain 20.00T = ATCC BAA-2694T = DSM 29364T).
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Affiliation(s)
- Kristin E. Mullins
- Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- U.S. Naval Medical Research Center, Silver Spring, MD 20910, USA
| | - Jun Hang
- Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
| | - Ju Jiang
- U.S. Naval Medical Research Center, Silver Spring, MD 20910, USA
| | | | | | - Palmira Ventosilla
- Instituto de Medicina Tropical Alexander von Humboldt-Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Ciro Maguiña
- Instituto de Medicina Tropical Alexander von Humboldt-Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Richard G. Jarman
- Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
| | - David Blazes
- Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Allen L. Richards
- Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- U.S. Naval Medical Research Center, Silver Spring, MD 20910, USA
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Abstract
Arthropod-borne bacterial diseases affect more than 25,000 Americans every year and thousands more around the world. These infections present a diagnostic dilemma for clinicians because they mimic many other pathologic conditions and are often low on or absent from the differential diagnosis list. Diagnosis is particularly challenging during pregnancy, as these infections may mimic common pregnancy-specific conditions, such as typical and atypical preeclampsia, or symptoms of pregnancy itself. Concerns regarding the safety in pregnancy of some indicated antibiotics add a therapeutic challenge for the prescriber, requiring knowledge of alternative therapeutic options for many arthropod-borne bacterial diseases. Physicians, especially those in endemic areas, must keep this class of infections in mind, particularly when the presentation does not appear classic for more commonly seen conditions. This article discusses presentation, diagnosis, and treatment of the most common of these arthropod-borne bacterial diseases, including Lyme disease, Rocky Mountain spotted fever, tick-borne relapsing fever, typhus, plague, cat-scratch disease, and Carrión disease.
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Rapid and sensitive detection of Bartonella bacilliformis in experimentally infected sand flies by loop-mediated isothermal amplification (LAMP) of the Pap31 gene. PLoS Negl Trop Dis 2014; 8:e3342. [PMID: 25522230 PMCID: PMC4270493 DOI: 10.1371/journal.pntd.0003342] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 10/14/2014] [Indexed: 11/19/2022] Open
Abstract
Background Carrion' disease, caused by Bartonella bacilliformis, remains truly neglected due to its focal geographical nature. A wide spectrum of clinical manifestations, including asymptomatic bacteremia, and lack of a sensitive diagnostic test can potentially lead to a spread of the disease into non-endemic regions where competent sand fly vectors may be present. A reliable test capable of detecting B. bacilliformis is urgently needed. Our objective is to develop a loop-mediated isothermal amplification (LAMP) assay targeting the pap31 gene to detect B. bacilliformis. Methods and Findings The sensitivity of the LAMP was evaluated in comparison to qPCR using plasmid DNA containing the target gene and genomic DNA in the absence and presence of human or sand fly DNA. The detection limit of LAMP was 1 to 10 copies/µL, depending on the sample metrics. No cross-reaction was observed when testing against a panel of various closely related bacteria. The utility of the LAMP was further compared to qPCR by the examination of 74 Lutzomyia longipalpis sand flies artificially fed on blood spiked with B. bacilliformis and harvested at days (D) 1, 3, 5, 7 and 9 post feeding. Only 86% of sand flies at D1 and 63% of flies at D3 were positive by qPCR. LAMP was able to detect B. bacilliformis in all those flies confirmed positive by qPCR. However, none of the flies after D3 were positive by either LAMP or qPCR. In addition to demonstrating the sensitivity of the LAMP assay, these results suggest that B. bacilliformis cannot propagate in artificially fed L. longipalpis. Conclusions The LAMP assay is as sensitive as qPCR for the detection of B. bacilliformis and could be useful to support diagnosis of patients in low-resource settings and also to identify B. bacilliformis in the sand fly vector. Carrion's disease, caused by Bartonella bacilliformis remains truly neglected due to its focal geographical nature. A wide spectrum of clinical manifestations, including asymptomatic bacteremia can potentially lead to a spread of the disease into non-endemic regions. The PCR-based approach is sensitive for detection of B. bacilliformis but requires a thermocycler, thus limiting its use in remote endemic areas. LAMP is a simple method capable of detecting B. bacilliformis DNA within an hour under isothermal conditions, requiring less specialized equipment for amplification, thus enabling diagnosis in rural areas. This study demonstrated that the detection limit of LAMP, targeting the pap31 gene of B. bacilliformis, was comparable to that of qPCR. With a high, targeted selectivity, LAMP showed a high specificity as no cross-reaction was observed when testing a panel of closely related bacteria. The utility of the LAMP assay was further demonstrated by the examination of sand flies artificially fed on blood spiked with B. bacilliformis. The results showed that LAMP was able to detect B. bacilliformis in all flies confirmed positive by qPCR. This study showed that LAMP can be useful to support diagnosis of patients in low-resource settings and also to identify B. bacilliformis in the sand fly vector.
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Tuya XL, Escalante-Kanashiro R, Tinco C, Pons MJ, Petrozzi V, Ruiz J, del Valle J. Possible vertical transmission of Bartonella bacilliformis in Peru. Am J Trop Med Hyg 2014; 92:126-8. [PMID: 25371184 DOI: 10.4269/ajtmh.14-0098] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
A 22-day-old male was admitted with a 2-day history of irritability, dyspnea, jaundice, fever, and gastrointestinal bleeding. A thin blood smear was performed, which showed the presence of intraerythrocyte bacteria identified as Bartonella bacilliformis, and subsequently, the child was diagnosed with Carrion's disease. The diagnosis was confirmed by specific polymerase chain reaction. The child was born in a non-endemic B. bacilliformis area and had not traveled to such an area before hospitalization. However, the mother was from an endemic B. bacilliformis area, and posterior physical examination showed the presence of a wart compatible with B. bacilliformis in semi-immune subjects. These data support vertical transmission of B. bacilliformis.
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Affiliation(s)
- Ximena L Tuya
- Facultad de Ciencias de la Salud, Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Peru; Unidad de Cuidados Intensivos, Instituto Nacional de Salud del Niño, Lima, Peru; Barcelona Centre for International Health Research (Hospital Clinic, Universitat de Barcelona), Barcelona, Spain
| | - Raffo Escalante-Kanashiro
- Facultad de Ciencias de la Salud, Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Peru; Unidad de Cuidados Intensivos, Instituto Nacional de Salud del Niño, Lima, Peru; Barcelona Centre for International Health Research (Hospital Clinic, Universitat de Barcelona), Barcelona, Spain
| | - Carmen Tinco
- Facultad de Ciencias de la Salud, Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Peru; Unidad de Cuidados Intensivos, Instituto Nacional de Salud del Niño, Lima, Peru; Barcelona Centre for International Health Research (Hospital Clinic, Universitat de Barcelona), Barcelona, Spain
| | - Maria J Pons
- Facultad de Ciencias de la Salud, Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Peru; Unidad de Cuidados Intensivos, Instituto Nacional de Salud del Niño, Lima, Peru; Barcelona Centre for International Health Research (Hospital Clinic, Universitat de Barcelona), Barcelona, Spain
| | - Verónica Petrozzi
- Facultad de Ciencias de la Salud, Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Peru; Unidad de Cuidados Intensivos, Instituto Nacional de Salud del Niño, Lima, Peru; Barcelona Centre for International Health Research (Hospital Clinic, Universitat de Barcelona), Barcelona, Spain
| | - Joaquim Ruiz
- Facultad de Ciencias de la Salud, Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Peru; Unidad de Cuidados Intensivos, Instituto Nacional de Salud del Niño, Lima, Peru; Barcelona Centre for International Health Research (Hospital Clinic, Universitat de Barcelona), Barcelona, Spain
| | - Juana del Valle
- Facultad de Ciencias de la Salud, Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Peru; Unidad de Cuidados Intensivos, Instituto Nacional de Salud del Niño, Lima, Peru; Barcelona Centre for International Health Research (Hospital Clinic, Universitat de Barcelona), Barcelona, Spain
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Angelakis E, Raoult D. Pathogenicity and treatment of Bartonella infections. Int J Antimicrob Agents 2014; 44:16-25. [DOI: 10.1016/j.ijantimicag.2014.04.006] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 04/30/2014] [Indexed: 10/25/2022]
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Minnick MF, Anderson BE, Lima A, Battisti JM, Lawyer PG, Birtles RJ. Oroya fever and verruga peruana: bartonelloses unique to South America. PLoS Negl Trop Dis 2014; 8:e2919. [PMID: 25032975 PMCID: PMC4102455 DOI: 10.1371/journal.pntd.0002919] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Bartonella bacilliformis is the bacterial agent of Carrión's disease and is presumed to be transmitted between humans by phlebotomine sand flies. Carrión's disease is endemic to high-altitude valleys of the South American Andes, and the first reported outbreak (1871) resulted in over 4,000 casualties. Since then, numerous outbreaks have been documented in endemic regions, and over the last two decades, outbreaks have occurred at atypical elevations, strongly suggesting that the area of endemicity is expanding. Approximately 1.7 million South Americans are estimated to be at risk in an area covering roughly 145,000 km2 of Ecuador, Colombia, and Peru. Although disease manifestations vary, two disparate syndromes can occur independently or sequentially. The first, Oroya fever, occurs approximately 60 days following the bite of an infected sand fly, in which infection of nearly all erythrocytes results in an acute hemolytic anemia with attendant symptoms of fever, jaundice, and myalgia. This phase of Carrión's disease often includes secondary infections and is fatal in up to 88% of patients without antimicrobial intervention. The second syndrome, referred to as verruga peruana, describes the endothelial cell-derived, blood-filled tumors that develop on the surface of the skin. Verrugae are rarely fatal, but can bleed and scar the patient. Moreover, these persistently infected humans provide a reservoir for infecting sand flies and thus maintaining B. bacilliformis in nature. Here, we discuss the current state of knowledge regarding this life-threatening, neglected bacterial pathogen and review its host-cell parasitism, molecular pathogenesis, phylogeny, sand fly vectors, diagnostics, and prospects for control.
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Affiliation(s)
- Michael F. Minnick
- Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America
| | - Burt E. Anderson
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Amorce Lima
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - James M. Battisti
- Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America
| | - Phillip G. Lawyer
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Richard J. Birtles
- School of Environment and Life Sciences, University of Salford, Salford, United Kingdom
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Breitschwerdt EB. Bartonellosis: One Health Perspectives for an Emerging Infectious Disease. ILAR J 2014; 55:46-58. [DOI: 10.1093/ilar/ilu015] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Bolivar-Mejia A, Alarcón-Olave C, Rodriguez-Morales AJ. Skin manifestations of arthropod-borne infection in Latin America. Curr Opin Infect Dis 2014; 27:288-94. [DOI: 10.1097/qco.0000000000000060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Angkasekwinai N, Atkins EH, Romero S, Grieco J, Chao CC, Ching WM. An evaluation study of enzyme-linked immunosorbent assay (ELISA) using recombinant protein Pap31 for detection of antibody against Bartonella bacilliformis infection among the Peruvian population. Am J Trop Med Hyg 2014; 90:690-6. [PMID: 24515944 DOI: 10.4269/ajtmh.13-0131] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Reliable laboratory testing is of great importance to detect Bartonella bacilliformis infection. We evaluated the sensitivity and specificity of the enzyme-linked immunosorbent assay (ELISA) using recombinant protein Pap31 (rPap31) for the detection of antibodies against B. bacilliformis as compared with immunofluorescent assay (IFA). Of the 302 sera collected between 1997 and 2000 among an at-risk Peruvian population, 103 and 34 samples tested positive for IFA-immunoglobulin G (IgG) and IFA-IgM, respectively. By using Youden's index, the cutoff values of ELISA-IgG at 0.915 gave a sensitivity of 84.5% and specificity of 94%. The cutoff values of ELISA-IgM at 0.634 gave a sensitivity of 88.2% and specificity of 85.1%. Using latent class analysis, estimates of sensitivity and specificity of almost all the assays were slightly higher than those of a conventional method of calculation. The test is proved beneficial for discriminating between infected and non-infected individuals with the advantage of low-cost and high-throughput capability.
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Affiliation(s)
- Nasikarn Angkasekwinai
- Department of Preventive Medicine and Biometrics, Uniformed Services University of the Health Sciences, Bethesda, Maryland; Viral and Rickettsial Diseases Department, Infectious Disease Directorate, Naval Medical Research Center, Silver Spring, Maryland; Naval Medical Research Institute Detachment, Lima, Peru
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Blazes DL, Mullins K, Smoak BL, Jiang J, Canal E, Solorzano N, Hall E, Meza R, Maguina C, Myers T, Richards AL, Laughlin L. Novel Bartonella agent as cause of verruga peruana. Emerg Infect Dis 2014; 19:1111-4. [PMID: 23764047 PMCID: PMC3713980 DOI: 10.3201/eid1907.121718] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
While studying chronic verruga peruana infections in Peru from 2003, we isolated a novel Bartonella agent, which we propose be named Candidatus Bartonella ancashi. This case reveals the inherent weakness of relying solely on clinical syndromes for diagnosis and underscores the need for a new diagnostic paradigm in developing settings.
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Affiliation(s)
- David L Blazes
- Uniformed Services University of the Health Sciences, Bethesda, Maryland 20910, USA.
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Lehmann JS, Fouts DE, Haft DH, Cannella AP, Ricaldi JN, Brinkac L, Harkins D, Durkin S, Sanka R, Sutton G, Moreno A, Vinetz JM, Matthias MA. Pathogenomic inference of virulence-associated genes in Leptospira interrogans. PLoS Negl Trop Dis 2013; 7:e2468. [PMID: 24098822 PMCID: PMC3789758 DOI: 10.1371/journal.pntd.0002468] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 08/23/2013] [Indexed: 11/18/2022] Open
Abstract
Leptospirosis is a globally important, neglected zoonotic infection caused by spirochetes of the genus Leptospira. Since genetic transformation remains technically limited for pathogenic Leptospira, a systems biology pathogenomic approach was used to infer leptospiral virulence genes by whole genome comparison of culture-attenuated Leptospira interrogans serovar Lai with its virulent, isogenic parent. Among the 11 pathogen-specific protein-coding genes in which non-synonymous mutations were found, a putative soluble adenylate cyclase with host cell cAMP-elevating activity, and two members of a previously unstudied ∼15 member paralogous gene family of unknown function were identified. This gene family was also uniquely found in the alpha-proteobacteria Bartonella bacilliformis and Bartonella australis that are geographically restricted to the Andes and Australia, respectively. How the pathogenic Leptospira and these two Bartonella species came to share this expanded gene family remains an evolutionary mystery. In vivo expression analyses demonstrated up-regulation of 10/11 Leptospira genes identified in the attenuation screen, and profound in vivo, tissue-specific up-regulation by members of the paralogous gene family, suggesting a direct role in virulence and host-pathogen interactions. The pathogenomic experimental design here is generalizable as a functional systems biology approach to studying bacterial pathogenesis and virulence and should encourage similar experimental studies of other pathogens.
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Affiliation(s)
- Jason S Lehmann
- Division of Infectious Diseases, Department of Medicine, University of California San Diego School of Medicine, La Jolla, California, United States of America
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Smit PW, Peeling RW, Garcia PJ, Torres LL, Pérez-Lu JE, Moore D, Mabey D. Dried blood spots for qPCR diagnosis of acute Bartonella bacilliformis infection. Am J Trop Med Hyg 2013; 89:988-90. [PMID: 24043691 DOI: 10.4269/ajtmh.13-0246] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Bartonella bacilliformis is the etiological agent of a life-threatening illness. Thin blood smear is the most common diagnostic method for acute infection in endemic areas of Peru but remains of limited value because of low sensitivity. The aim of this study was to adapt a B. bacilliformis-specific real-time polymerase chain reaction (PCR) assay for use with dried blood spots (DBS) as a sampling method and assess its performance and use for the diagnosis and surveillance of acute Bartonella infection. Only two of 65 children (3%) that participated in this study had positive blood smears for B. bacilliformis, whereas 16 (including these two) were positive by PCR performed on DBS samples (24.6%). The use of DBS in combination with B. bacilliformis-specific PCR could be a useful tool for public health in identifying and monitoring outbreaks of infection and designing control programs to reduce the burden of this life-threatening illness.
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Affiliation(s)
- Pieter W Smit
- London School of Hygiene and Tropical Medicine, London, United Kingdom; Epidemiology, STI/AIDS Unit, School of Public Health, Universidad Peruana Cayetano Heredia, Lima, Peru
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