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López WR, Altamiranda-Saavedra M, Kehl SD, Ferro I, Bellomo C, Martínez VP, Simoy MI, Gil JF. Modeling potential risk areas of Orthohantavirus transmission in Northwestern Argentina using an ecological niche approach. BMC Public Health 2023; 23:1236. [PMID: 37365559 DOI: 10.1186/s12889-023-16071-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023] Open
Abstract
BACKGROUND Hantavirus Pulmonary Syndrome (HPS) is a rodent-borne zoonosis in the Americas, with up to 50% mortality rates. In Argentina, the Northwestern endemic area presents half of the annually notified HPS cases in the country, transmitted by at least three rodent species recognized as reservoirs of Orthohantavirus. The potential distribution of reservoir species based on ecological niche models (ENM) can be a useful tool to establish risk areas for zoonotic diseases. Our main aim was to generate an Orthohantavirus risk transmission map based on ENM of the reservoir species in northwest Argentina (NWA), to compare this map with the distribution of HPS cases; and to explore the possible effect of climatic and environmental variables on the spatial variation of the infection risk. METHODS Using the reservoir geographic occurrence data, climatic/environmental variables, and the maximum entropy method, we created models of potential geographic distribution for each reservoir in NWA. We explored the overlap of the HPS cases with the reservoir-based risk map and a deforestation map. Then, we calculated the human population at risk using a census radius layer and a comparison of the environmental variables' latitudinal variation with the distribution of HPS risk. RESULTS We obtained a single best model for each reservoir. The temperature, rainfall, and vegetation cover contributed the most to the models. In total, 945 HPS cases were recorded, of which 97,85% were in the highest risk areas. We estimated that 18% of the NWA population was at risk and 78% of the cases occurred less than 10 km from deforestation. The highest niche overlap was between Calomys fecundus and Oligoryzomys chacoensis. CONCLUSIONS This study identifies potential risk areas for HPS transmission based on climatic and environmental factors that determine the distribution of the reservoirs and Orthohantavirus transmission in NWA. This can be used by public health authorities as a tool to generate preventive and control measures for HPS in NWA.
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Affiliation(s)
- Walter R López
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Universidad Nacional de Salta (UNSa), Sede Regional Orán, A4400, Salta, Argentina
| | - Mariano Altamiranda-Saavedra
- Grupo de Investigación Bioforense, Facultad de Derecho Y Ciencias Forenses, Tecnológico de Antioquia Institución Universitaria, Antioquia, Colombia
| | - Sebastián D Kehl
- Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios E Institutos de Salud (ANLIS) "Dr. C. G. Malbrán", Buenos Aires, Argentina
| | - Ignacio Ferro
- Instituto de Ecorregiones Andinas (INECOA), Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), Universidad Nacional de Jujuy (UNJu), San Salvador de Jujuy, Argentina
| | - Carla Bellomo
- Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios E Institutos de Salud (ANLIS) "Dr. C. G. Malbrán", Buenos Aires, Argentina
| | - Valeria P Martínez
- Instituto Nacional de Enfermedades Infecciosas (INEI), Administración Nacional de Laboratorios E Institutos de Salud (ANLIS) "Dr. C. G. Malbrán", Buenos Aires, Argentina
| | - Mario I Simoy
- Instituto de Investigaciones en Energía No Convencional (INENCO), Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), Universidad Nacional de Salta (UNSa), A4400, Salta, Argentina
- Instituto Multidisciplinario Sobre Ecosistemas Y Desarrollo Sustentable (UNCPBA - CICPBA), Tandil, Argentina
| | - José F Gil
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Universidad Nacional de Salta (UNSa), Sede Regional Orán, A4400, Salta, Argentina.
- Instituto de Investigaciones en Energía No Convencional (INENCO), Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), Universidad Nacional de Salta (UNSa), A4400, Salta, Argentina.
- Cátedra de Química Biológica Y Biología Molecular de La Facultad de Ciencias Naturales, Universidad Nacional de Salta, A4400, Salta, Argentina.
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Abán Moreyra DN, Castillo PM, Escalada A, Mangudo C, Copa GN, Gleiser RM, Nasser JR, Gil JF. Use of Aedes aegypti Oviposition Surveillance and a Geographic Information System for Planning Anti-Vectorial Measures. Am J Trop Med Hyg 2022; 107:916-924. [PMID: 36037864 PMCID: PMC9651510 DOI: 10.4269/ajtmh.21-0364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 03/22/2022] [Indexed: 11/07/2022] Open
Abstract
Arboviruses transmitted by Aedes aegypti pose a threat to global public health. Because there are no vaccines or drugs available, the prevention of these diseases in Argentina is based on integrated vector control. In this work, the spatiotemporal dynamics of the vector distribution was analyzed by monitoring oviposition. This information allowed the planning of anti-vector interventions and the evaluation of their effect on the relative abundance of mosquito populations in San Ramón de la Nueva Orán. Observed data were compared with the eggs expected via a statistical model based on meteorological variables. The oviposition substrate preference of mosquito females was also evaluated, and the possible relationship between the relative abundance of the vector and sociodemographic and environmental variables (normalized difference vegetation index and normalized difference water index) was explored. A total of 4,193 eggs of Ae. aegypti were collected, and spatial clusters were detected for all months for which the presence of the mosquito was reported. The observed number of eggs was significantly less than the expected-corrected egg abundance. A significant correlation of oviposition activity was found with three sociodemographic variables, whereas no significant correlation was found with mean or median values of the environmental variables studied. This monitoring strategy made it possible to address the interventions and evaluate them, proposing them as good complementary tools for the control of Ae. aegypti in northern Argentina.
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Affiliation(s)
- Daira N. Abán Moreyra
- Instituto de Investigación en Energía No Convencional, Departamento de Física, Universidad Nacional de Salta, Salta, Argentina
| | - Paola M. Castillo
- Instituto de Investigación en Energía No Convencional, Departamento de Física, Universidad Nacional de Salta, Salta, Argentina
| | - Andrés Escalada
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Orán, Argentina
| | - Carolina Mangudo
- Instituto de Investigación en Energía No Convencional, Departamento de Física, Universidad Nacional de Salta, Salta, Argentina
| | - Griselda N. Copa
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Orán, Argentina
- Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina
| | - Raquel M. Gleiser
- Universidad Nacional de Córdoba- CONICET, Instituto Multidisciplinario de Biología Vegetal, Centro de Relevamiento y Evaluación de Recursos Agrícolas y Naturales, Córdoba, Argentina
- Facultad de Ciencias Exactas, Físicas y Naturales, Cátedra de Ecología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Julio R. Nasser
- Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina
| | - José F. Gil
- Instituto de Investigación en Energía No Convencional, Departamento de Física, Universidad Nacional de Salta, Salta, Argentina
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Orán, Argentina
- Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina
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3
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Aramayo LV, Copa GN, Hoyos CL, Almazán MC, Juarez M, Cajal SP, Krolewiecki AJ, Nasser JR, Gil JF. [Tegumentary leishmaniasis and sandflies in Colonia Santa Rosa locality in northern Argentina]. Rev Argent Microbiol 2021; 54:143-151. [PMID: 34503860 DOI: 10.1016/j.ram.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 05/13/2021] [Accepted: 06/09/2021] [Indexed: 10/20/2022] Open
Abstract
Tegumentary leishmaniasis (TL) is caused by parasites of the genus Leishmania and transmitted by the sandfly species, insects belonging to the order Diptera, family Psychodidae. Historically, the most endemic area of TL in Argentina has been the northern region. The aim of this work was to analyze the presence and temporal variation of TL cases reported between 1985 and 2019 in Colonia Santa Rosa locality, northern Argentina. Furthermore, its clinical forms were characterized and sandflies were captured. Patients were diagnosed by smear and the Montenegro skin test. For sampling, CDC light traps were placed at 14 sites from 7pm to 7am. The correlation between vegetation cover and sandfly abundance was also studied. One hundred and twenty TL cases were diagnosed and the overall prevalence was 0.75% (≈16 000 inhabitants). Patients presented simple and multiple cutaneous leishmaniasis (88.79%) and the mucocutaneous form (10.83%). Skin lesions were more frequent on the lower extremities (46.73%). Of the total number of sandflies, Nyssomyia neivai (95%) was the predominant species followed by Migonemyia migonei (1.9%), cortelezzii complex (1.3%) and Evandromyia sallesi (0.09%). The persistent occurrence of cases and the presence of sandflies in the locality suggest the existence of endemic transmission in the area. This highlights the need to design prevention and control measures for TL in northern Argentina.
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Affiliation(s)
- Lorena V Aramayo
- Cátedra de Química Biológica de la Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta-Capital, Argentina
| | - Griselda N Copa
- Instituto de Investigaciones en Energía no Convencional (INENCO-CONICET), Universidad Nacional de Salta, Salta-Capital, Argentina; Cátedra de Química Biológica de la Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta-Capital, Argentina
| | - Carlos L Hoyos
- Instituto de Patología Experimental (IPE-CONICET), Universidad Nacional de Salta, Salta-Capital, Argentina
| | - María C Almazán
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Salta, Argentina
| | - Marisa Juarez
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Salta, Argentina
| | - Silvana P Cajal
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Salta, Argentina
| | - Alejandro J Krolewiecki
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Salta, Argentina
| | - Julio R Nasser
- Cátedra de Química Biológica de la Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta-Capital, Argentina
| | - José F Gil
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Salta, Argentina; Instituto de Investigaciones en Energía no Convencional (INENCO-CONICET), Universidad Nacional de Salta, Salta-Capital, Argentina; Cátedra de Química Biológica de la Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta-Capital, Argentina.
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Durif O, Capron M, Messinger JP, Benidar A, Biennier L, Bourgalais J, Canosa A, Courbe J, Garcia GA, Gil JF, Nahon L, Okumura M, Rutkowski L, Sims IR, Thiévin J, Le Picard SD. A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures. Rev Sci Instrum 2021; 92:014102. [PMID: 33514236 DOI: 10.1063/5.0029991] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 12/16/2020] [Indexed: 06/12/2023]
Abstract
A new instrument dedicated to the kinetic study of low-temperature gas phase neutral-neutral reactions, including clustering processes, is presented. It combines a supersonic flow reactor with vacuum ultra-violet synchrotron photoionization time-of-flight mass spectrometry. A photoion-photoelectron coincidence detection scheme has been adopted to optimize the particle counting efficiency. The characteristics of the instrument are detailed along with its capabilities illustrated through a few results obtained at low temperatures (<100 K) including a photoionization spectrum of n-butane, the detection of formic acid dimer formation, and the observation of diacetylene molecules formed by the reaction between the C2H radical and C2H2.
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Affiliation(s)
- O Durif
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - M Capron
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - J P Messinger
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - A Benidar
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - L Biennier
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - J Bourgalais
- LATMOS/IPSL, UVSQ, Université Paris-Saclay, UPMC, Univ Paris 06, CNRS, 78280 Guyancourt, France
| | - A Canosa
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - J Courbe
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - G A Garcia
- Synchrotron SOLEIL, L'orme des Merisiers, BP48 St Aubin, 91192 Gif Sur Yvette Cedex, France
| | - J F Gil
- Synchrotron SOLEIL, L'orme des Merisiers, BP48 St Aubin, 91192 Gif Sur Yvette Cedex, France
| | - L Nahon
- Synchrotron SOLEIL, L'orme des Merisiers, BP48 St Aubin, 91192 Gif Sur Yvette Cedex, France
| | - M Okumura
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - L Rutkowski
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - I R Sims
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - J Thiévin
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
| | - S D Le Picard
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F-35000 Rennes, France
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Floridia-Yapur N, Monje-Rumi M, Ragone P, Lauthier JJ, Tomasini N, Alberti D'Amato A, Diosque P, Cimino R, Gil JF, Sanchez DO, Nasser JR, Tekiel V. TcTASV Antigens of Trypanosoma cruzi: Utility for Diagnosis and High Accuracy as Biomarkers of Treatment Efficacy in Pediatric Patients. Am J Trop Med Hyg 2020; 101:1135-1138. [PMID: 31516110 DOI: 10.4269/ajtmh.18-0936] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The discovery and characterization of novel parasite antigens to improve the diagnosis of Trypanosoma cruzi by serological methods and for accurate and rapid follow-up of treatment efficiency are still needed. TcTASV is a T. cruzi-specific multigene family, whose products are expressed on the parasite stages present in the vertebrate host. In a previous work, a mix of antigens from subfamilies TcTASV-A and TcTASV-C (Mix A + C) was sensitive and specific to identify dogs with active infection of high epidemiological relevance. Here, TcTASV-A and TcTASV-C were assayed separately as well as together (Mix A + C) in an ELISA format on human samples. The Mix A + C presented moderate sensitivity (78%) but high diagnostic accuracy with a 100% of specificity, evaluated on healthy, leishmaniasic, and Strongyloides stercoralis infected patients. Moreover, antibody levels of pediatric patients showed-2 years posttreatment-diminished reactivity against the Mix A + C (P < 0.0001), pointing TcTASV antigens as promising tools for treatment follow-up.
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Affiliation(s)
- Noelia Floridia-Yapur
- Cátedra de Química Biológica, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina.,Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Universidad Nacional de Salta, Orán-Salta, Argentina
| | - Mercedes Monje-Rumi
- Instituto de Patología Experimental (IPE-CONICET), Facultad de Ciencias de la Salud, Universidad Nacional de Salta, Salta, Argentina
| | - Paula Ragone
- Instituto de Patología Experimental (IPE-CONICET), Facultad de Ciencias de la Salud, Universidad Nacional de Salta, Salta, Argentina
| | - Juan J Lauthier
- Instituto de Patología Experimental (IPE-CONICET), Facultad de Ciencias de la Salud, Universidad Nacional de Salta, Salta, Argentina
| | - Nicolás Tomasini
- Instituto de Patología Experimental (IPE-CONICET), Facultad de Ciencias de la Salud, Universidad Nacional de Salta, Salta, Argentina
| | - Anahí Alberti D'Amato
- Instituto de Patología Experimental (IPE-CONICET), Facultad de Ciencias de la Salud, Universidad Nacional de Salta, Salta, Argentina
| | - Patricio Diosque
- Instituto de Patología Experimental (IPE-CONICET), Facultad de Ciencias de la Salud, Universidad Nacional de Salta, Salta, Argentina
| | - Rubén Cimino
- Cátedra de Química Biológica, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina.,Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Universidad Nacional de Salta, Orán-Salta, Argentina
| | - José F Gil
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Universidad Nacional de Salta, Orán-Salta, Argentina.,Instituto de Investigaciones en Energía No Convencional (INENCO-CONICET), CCT-Salta, Salta, Argentina
| | - Daniel O Sanchez
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde" (IIBIO), Universidad Nacional de San Martín, UNSAM-CONICET, Buenos Aires, Argentina
| | - Julio R Nasser
- Cátedra de Química Biológica, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina
| | - Valeria Tekiel
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde" (IIBIO), Universidad Nacional de San Martín, UNSAM-CONICET, Buenos Aires, Argentina
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Copa GN, Almazán MC, Aramayo LV, Krolewiecki AJ, Cajal SP, Juarez M, Lauthier JJ, Korenaga M, Barroso P, Nasser JR, Marco JD, Gil JF. Tegumentary leishmaniasis and sand flies in a border area between Argentina and Bolivia. Trans R Soc Trop Med Hyg 2020; 113:91-100. [PMID: 30418628 DOI: 10.1093/trstmh/try113] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/21/2018] [Indexed: 11/12/2022] Open
Abstract
Background Some sand flies are of medical importance because they are vectors of Leishmania parasites that are responsible for leishmaniasis. The aim of this study was to make a retrospective epidemiological analysis of tegumentary leishmaniasis (TL), to identify Leishmania spp. from patient isolates and to describe the diversity of sand flies from a border area between Bolivia and Argentina. Methods TL cases included in the study were diagnosed in an endemic area of the north of Argentina from 1985 to 2017. The parasites isolated were characterized by the cytochrome B method. Sand flies were captured with Centers for Disease Control traps in Aguas Blancas and Media Luna-Algarrobito localities. Results A total of 118 cases of TL were analysed. Eight isolates were characterized as Leishmania (Viannia) braziliensis. A total of 1291 sand flies were captured, including Nyssomyia neivai, Cortelezzii complex, Evandromyia sallesi, Migonemyia migonei and Micropygomyia quinquefer. Within the area, sand flies were found in the backyards of houses. Conclusions In this region there exists the possibility of peridomestic transmission of TL in the neighbourhoods peripheral to the urban area and in rural environments as well as the risk of transmission to travellers that pass through the customs offices.
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Affiliation(s)
- Griselda N Copa
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Alvarado 751 - San Ramón de la Nueva Orán-C.P.4530.,Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta. Universidad Nacional de Salta. Av. Bolivia 5150 - CP
| | - María C Almazán
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Alvarado 751 - San Ramón de la Nueva Orán-C.P.4530.,Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta. Universidad Nacional de Salta. Av. Bolivia 5150 - CP
| | - Lorena V Aramayo
- Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta. Universidad Nacional de Salta. Av. Bolivia 5150 - CP
| | - Alejandro J Krolewiecki
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Alvarado 751 - San Ramón de la Nueva Orán-C.P.4530
| | - Silvana P Cajal
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Alvarado 751 - San Ramón de la Nueva Orán-C.P.4530
| | - Marisa Juarez
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Alvarado 751 - San Ramón de la Nueva Orán-C.P.4530
| | - Juan J Lauthier
- Parasitology Department, Kochi Medical School, Kochi University, Oko, Nankoku, Kochi, Japan
| | - Masataka Korenaga
- Parasitology Department, Kochi Medical School, Kochi University, Oko, Nankoku, Kochi, Japan
| | - Paola Barroso
- Instituto de Patología Experimental (IPE-CONICET), Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Av. Bolivia 5150 - CP
| | - Julio R Nasser
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Alvarado 751 - San Ramón de la Nueva Orán-C.P.4530.,Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta. Universidad Nacional de Salta. Av. Bolivia 5150 - CP
| | - Jorge D Marco
- Instituto de Patología Experimental (IPE-CONICET), Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Av. Bolivia 5150 - CP
| | - José F Gil
- Instituto de Investigaciones de Enfermedades Tropicales (IIET), Sede Regional Orán, Facultad de Ciencias de la Salud, Universidad Nacional de Salta. Alvarado 751 - San Ramón de la Nueva Orán-C.P.4530.,Instituto de Investigación en Energía No Convencional (INENCO-CONICET), Departamento de Física, Universidad Nacional de Salta. Av. Bolivia 5150 - CP
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7
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Chanampa MDM, Gleiser RM, Hoyos CL, Copa GN, Mangudo C, Nasser JR, Gil JF. Vegetation Cover and Microspatial Distribution of Sand Flies (Diptera: Psychodidae) in an Endemic Locality for Cutaneous Leishmaniasis in Northern Argentina. J Med Entomol 2018; 55:1431-1439. [PMID: 30113657 DOI: 10.1093/jme/tjy129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Indexed: 06/08/2023]
Abstract
The sand fly fauna in Hipólito Yrigoyen, Argentina, a locality where cutaneous leishmaniasis cases occur, was surveyed with zones of higher abundance of sand flies correlated to vegetation cover estimated through normalized difference vegetation index (NDVI). Sand flies were collected with 10 CDC traps during six nights, from December 2009 to January 2010. A map was built of expected sand flies abundance in which levels of NDVI were categorized. In total, 1,392 Phlebotominae (Diptera: Psychodidae) specimens were collected, comprised of the following species: Nyssomyia neivai (Pinto 1926), Migonemyia migonei (França 1920), species of the cortelezzii complex (Brèthes 1923), Evandromyia sallesi (Galvão & Coutinho 1940), and Psathyromyia shannoni (Dyar 1929). Positive correlations were found between the abundance of sand flies and the NDVI (P < 0.05) for buffer areas of <150 m radii from the trap location points, i.e., the sand fly abundance was greater where vegetation cover and density were greater. In this context, plant cover should be taken into account to prioritize surveillance and control areas within the program of sand flies control in northern Argentina.
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Affiliation(s)
- Mariana Del M Chanampa
- Instituto de Investigaciones en Energía no Convencional (INENCO-CONICET), Universidad Nacional de Salta, Sector Salud y Ambiente, Av. Bolivia, Salta, Argentina
| | - Raquel M Gleiser
- Universidad Nacional de Córdoba-CONICET, Instituto Multidisciplinario de Biología Vegetal (IMBIV)-Centro de Relevamiento y Evaluación de Recursos Agrícolas y Naturales (CREAN-IMBIV), Córdoba, Argentina
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Diversidad Biológica y Ecología, Córdoba, Argentina
| | - Carlos L Hoyos
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Argentina
| | - Griselda N Copa
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Argentina
| | - Carolina Mangudo
- Instituto de Investigaciones en Energía no Convencional (INENCO-CONICET), Universidad Nacional de Salta, Sector Salud y Ambiente, Av. Bolivia, Salta, Argentina
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Argentina
| | - Julio R Nasser
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Argentina
- Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina
| | - José F Gil
- Instituto de Investigaciones en Energía no Convencional (INENCO-CONICET), Universidad Nacional de Salta, Sector Salud y Ambiente, Av. Bolivia, Salta, Argentina
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Argentina
- Cátedra de Química Biológica y Biología Molecular, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina
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Gil JF, Gutiérrez PA, Cotes JM, González EP, Marín M. Caracterización genotípica de aislamientos colombianos del <i>potato mop-top virus</i> (PMTV, <i>Pomovirus</i>). Actual Biol 2017. [DOI: 10.17533/udea.acbi.14092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Recientemente se detectó en Colombia la presencia del virus mop-top de la papa (PMTV, Pomovirus), transmitido por zoosporas del protozoo Spongospora subterranea f. sp. subterranea, agente causal de la sarna polvosa de la papa. Esta investigación se planteó con el fin de evaluar las características genotípicas de las cepas virales del PMTV obtenidas a partir de 20 muestras de suelos de cultivos de papa de los departamentos de Antioquia, Boyacá, Cundinamarca y Nariño. Para esto, se amplificaron mediante RT-PCR las regiones parciales que codifican para los genes de la cápside (CP) y del segundo gen del triple bloque de genes (TGB2), secuenciándose y comparándose con las secuencias de este virus depositadas en las bases de datos moleculares. Adicionalmente, se seleccionaron dos cepas del virus para aumentar el cubrimiento de las secuencias de los segmentos dos y tres (ARN 2 y ARN 3) del genoma viral. Los resultados reconfirmaron la presencia del virus PMTV en Colombia, detectándose dos variantes principales (I y II), una de ellas correspondiente al genotipo distribuido mundialmente (I); mientras que la otra variante (II) representa aislamientos virales de PMTV no registrados hasta ahora en otros países del mundo. Se espera que la información generada en esta investigación sea considerada en los programas de certificación de tubérculo semilla y del manejo cuarentenario de patógenos del cultivo de papa en el país.
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Gil JF, Palacios M, Krolewiecki AJ, Cortada P, Flores R, Jaime C, Arias L, Villalpando C, Alberti DÁmato AM, Nasser JR, Aparicio JP. Spatial spread of dengue in a non-endemic tropical city in northern Argentina. Acta Trop 2016; 158:24-31. [PMID: 26875764 DOI: 10.1016/j.actatropica.2016.02.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 10/22/2022]
Abstract
After more than eighty years dengue reemerged in Argentina in 1997. Since then, the largest epidemic in terms of geographical extent, magnitude and mortality, was recorded in 2009. In this report we analyzed the DEN-1 epidemic spread in Orán, a mid-size city in a non-endemic tropical area in Northern Argentina, and its correlation with demographic and socioeconomic factors. Cases were diagnosed by ELISA between January and June 2009. We applied a space-time and spatial scan statistic under a Poisson model. Possible association between dengue incidence and socio-economic variables was studied with the Spearman correlation test. The epidemic started from an imported case from Bolivia and space-time analysis detected two clusters: one on February and other in April (in the south and the northeast of the city respectively) with risk ratios of 25.24 and 4.07 (p<0.01). Subsequent cases spread widely around the city without significant space-temporal clustering. Maximum values of the entomological indices were observed in January, at the beginning of the epidemic (B=21.96; LH=8.39). No statistically significant association between socioeconomic variables and dengue incidence was found but positive correlation between population size and the number of cases (p<0.05) was detected. Two mechanisms may explain the observed pattern of epidemic spread in this non-endemic tropical city: a) Short range dispersal of mosquitoes and people generates clusters of cases and b) long-distance (within the city) human movement contributes to a quasi-random distribution of cases.
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10
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Socías ME, Fernández A, Gil JF, Krolewiecki AJ. [Soil transmitted helminthiasis in Argentina. A systematic review]. Medicina (B Aires) 2014; 74:29-36. [PMID: 24561837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
A systematic review of surveys performed between 1980 and 2011 (published in MEDLINE/Pubmed and/or LILACS indexed journals, available in the baseline data from a Mass Deworming National Program (MDNP, 2005) was used to identify the prevalence, distribution and detection of risk areas for soil transmitted helminth infections (STH) in Argentina. We found 310 publications in the database using the pre-defined key-words (medical subject headings) for research purposes. Only 24 articles with 26 surveillance sites in 8 provinces and a total of 5495 surveyed individuals fulfilled the inclusion criteria. Frequency rates for STH had a wide range: Ascaris lumbricoides: 0-67%, hookworms: 0-90%, Trichuris trichiura: 0-24.6 and Strongyloides stercoralis: 0-83%. The estimated combined incidence varied from 0.8% to 88.6%. Baseline surveys from the MDNP reporting on 1943 children from 12 provinces confirmed the heterogeneity, with combined STH frequency rates ranging from 0 to 42.7%. Surveys included in this review showed that the distribution of STH in Argentina is not homogeneous, with areas of high incidence (> 20%) in the northeastern and northwestern provinces where mass deworming activities would be highly beneficial. In several surveys, the high overall incidence was mostly due to hookworms and S. stercoralis, a situation to be considered when selecting diagnostic and therapeutic control strategies. The scarcity or absence of data from various provinces and the availability of less than 8000 surveyed individuals should be considered.
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Vega Benedetti AF, Cimino RO, Cajal PS, Juarez MDV, Villalpando CA, Gil JF, Marcipar IS, Krolewiecki AJ, Nasser JR. Performance of different Trypanosoma cruzi antigens in the diagnosis of Chagas disease in patients with American cutaneous leishmaniasis from a co-endemic region in Argentina. Trop Med Int Health 2013; 18:1103-1109. [PMID: 23837449 DOI: 10.1111/tmi.12144] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To determine the ability of recombinant antigens to detect cases of infection with Trypanosoma cruzi among cases of infection with Leishmania spp. by serological methods. METHODS Sera from 41 patients infected with Leishmania spp. were evaluated with ELISA using single (FRA, CP1 and TSSAVI) or pooled (commercial Rec-ELISA) recombinant proteins or homogenate antigens (commercial H-ELISA). As there is no gold standard antigen to discriminate Chagas disease from leishmaniasis, the correlation of results between defined antigens and the homogenate was made with Kappa Index (KI), the level of correlation considered being used as a criterion of specificity. RESULTS Single recombinant antigens and Rec-ELISA showed good correlation (KI > 0.8). A low correlation (KI < 0.66) was observed between the results from single recombinant antigens or the commercial recombinant kit and H-ELISA. CONCLUSIONS The highly correlated results between T. cruzi single or pooled recombinant proteins are indicative of the usefulness of recombinant antigens for Chagas diagnosis. Our results also indicate that in the city of Oran in Argentina, between 12% and 17% of patients with leishmaniasis are also infected with Chagas disease. The high KI values between TSSAVI and the other recombinant proteins suggest that in these patients, the infection may be caused by T. cruzi II and/or V and/or VI lineages.
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Affiliation(s)
- A F Vega Benedetti
- Cátedra de Química Biológica, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina.,Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina.,Instituto de Patología Experimental, Facultad de Ciencias de la Salud, Universidad Nacional de Salta, Salta, Argentina
| | - Rubén O Cimino
- Cátedra de Química Biológica, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina.,Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina
| | - Pamela S Cajal
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina
| | - Marisa Del Valle Juarez
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina
| | - Carlos A Villalpando
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina
| | - José F Gil
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Iván S Marcipar
- Laboratorio de Tecnología Inmunológica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Alejandro J Krolewiecki
- Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina.,Instituto de Patología Experimental, Facultad de Ciencias de la Salud, Universidad Nacional de Salta, Salta, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Julio R Nasser
- Cátedra de Química Biológica, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina.,Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina
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Strejilevich SA, Sarmiento MJ, Scápola M, Gil L, Martino DJ, Gil JF, Gómez-Restrepo C. Complementary and alternative medicines usage in bipolar patients from Argentina and Colombia: associations with satisfaction and adherence to treatment. J Affect Disord 2013; 149:393-7. [PMID: 23021194 DOI: 10.1016/j.jad.2012.08.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Accepted: 08/20/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND The use of Complementary and Alternative Medicines (CAM) has been reported by around half the patients undergoing medical treatment for chronic conditions. CAM use could be higher in people affected by bipolar disorders (BD). Some questions about CAM use in BD have not been investigated enough. We report here the results of an anonymous survey on CAM-use conducted among BD outpatients of two centers located in Argentina and Colombia. METHODS an anonymous self-survey was administrated to bipolar euthymic outpatients treated at each center. The survey included a self-report measure of adherence to psychiatric treatment and a modified version of CGI to asses satisfaction with the current treatment. RESULTS 200 patients completed the survey. Although samples differ in socio-economic profile, they do not differ in their reported CAM-usage (more than 40%). CAM-usage did not modify the adherence or satisfaction with the psychiatric treatment reported level. Thirty eight percent of those who were still resorting to CAM failed to inform it to their clinician. CAM-usage was rated as "useful" or "very useful" by 52% of patients. LIMITS adherence to current medical treatment and satisfaction with current treatment were investigated by a self-reported instrument. DISCUSSION the prevalence of CAM usage found is similar to that of other studies. CAM usage seems to be ubiquitous, which takes to posit that a subgroup of patients may be in need of treatment with greater magical-religious components. Half of these patients were reluctant to disclose CAM use. Clinicians may need to consider coexistence between "traditional" treatments and CAM for these patients.
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Affiliation(s)
- S A Strejilevich
- Bipolar Disorder Program, Neurosciences Institute, Favaloro University, Buenos Aires, Argentina.
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Krolewiecki AJ, Gil JF, Quipildor M, Cajal SP, Pravia C, Juarez M, Villalpando C, Locatelli FM, Chanampa M, Castillo G, Oreste MF, Hoyos CL, Negri V, Nasser JR. Restricted outbreak of American tegumentary leishmaniasis with high microfocal transmission. Am J Trop Med Hyg 2013; 88:578-82. [PMID: 23339200 DOI: 10.4269/ajtmh.12-0475] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Cutaneous leishmaniasis is endemic in Salta, the northwestern province of Argentina. We describe an outbreak involving five recreational hunters whose exposure was limited to several hours in a residual patch of primary forest. All patients presented with typical cutaneous lesions after a mean incubation period of 59 days (range 15-78), and one developed simultaneous mucosal involvement. Polymerase chain reaction analysis of lesions confirmed Leishmania (V.) braziliensis as the etiologic agent in three cases. All patients were cured with anti-Leishmania treatment. Entomologic surveys in the transmission area revealed a predominance of Lutzomyia neivai. This outbreak report confirms a microfocal transmission pattern of tegumentary leishmaniasis in the Americas and based on a well-determined exposure, allows the determination of incubation times for leishmaniasis caused by Leishmania braziliensis.
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Affiliation(s)
- Alejandro J Krolewiecki
- Instituto de Investigaciones en Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Salta, Argentina.
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Cimino RO, Diosque P, López Quiroga IR, Gil JF, Nasser JR. [Immunoenzymatic evaluation of the recombinant SAPA protein of Trypanosoma cruzi in naturally infected dogs]. Rev Argent Microbiol 2012; 44:177-181. [PMID: 23102466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
We evaluated the recombinant antigen SAPA (Shed Acute Phase Antigen) for the detection of Trypanosoma cruzi antibodies in sera from naturally infected dogs. The technique used was ELISA and the antigens were a homogenate of parasite T. cruzi (ELISA-H) and the recombinant SAPA (ELISA-SAPA). We analyzed 93 sera from dogs by ELISA-H and ELISA-SAPA, which were grouped as follows: G1: 11 negative control sera from the city of Salta, G2: 11 positive control sera from dogs naturally infected with T. cruzi and G3: 71 samples of dogs belonging to a Chagas disease-endemic area. The sensitivity and specificity of ELISA-SAPA were 100 %. The kappa index between ELISA-H and ELISA-SAPA was 0,85. These results confirm the use of SAPA antigen in the diagnosis of infection with T. cruzi in dogs.
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Affiliation(s)
- Rubén O Cimino
- Cátedra de Química Biológica, Facultad de Ciencias Naturales, Universidad Nacional de Salta, Argentina.
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Cruz MC, Cacciabue DG, Gil JF, Gamboni O, Vicente MS, Wuertz S, Gonzo E, Rajal VB. The impact of point source pollution on shallow groundwater used for human consumption in a threshold country. ACTA ACUST UNITED AC 2012; 14:2338-49. [DOI: 10.1039/c2em30322a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Krolewiecki AJ, Cajal SP, Villalpando C, Gil JF. Ivermectin-related adverse clinical events in patients treated for Mansonella ozzardi infections. Rev Argent Microbiol 2011; 43:48-50. [PMID: 21491068 DOI: 10.1590/s0325-75412011000100011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Accepted: 12/13/2010] [Indexed: 11/22/2022] Open
Abstract
We report the occurrence of serious reactions after treatment with oral ivermectin in two patients with Mansonella ozzardi infections. Both had systemic and respiratory symptoms and recovered without sequelae. Follow-up revealed clearance of microfilaremia in both cases, with relapse in one of them. These reactions are well described in the treatment of other filarial infections, but have not yet been reported in the treatment of M. ozzardi. We are now reporting the first such known reactions with this helminthiasis.
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Affiliation(s)
- Alejandro J Krolewiecki
- Instituto de Investigaciones en Enfermedades Tropicales, Sede regional Orán, Universidad Nacional de Salta, San Ramón de la Nueva Orán, Argentina.
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Gil JF, Hoyos CL, Cimino RO, Krolewiecki AJ, López Quiroga I, Cajal SP, Juárez M, García Bustos MF, Mora MC, Marco JD, Nasser JR. [Role of three ELISA tests using promastigote homogenates of Leishmania braziliensis, L. amazonensis and L. guyanensis in the diagnosis of tegumentary leishmaniasis]. Medicina (B Aires) 2011; 71:420-428. [PMID: 22057166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
It is important to know whether the variability of species of Leishmania parasites circulating in a region affects the performance of the ELISA test for the diagnosis of leishmaniasis. Therefore, the aim of this study was to analyze the reactivity of the ELISA using homogenates of promastigotes of Leishmania (V.) braziliensis (ELISAb), Leishmania (L) amazonensis (ELISAa) and Leishmania (V.) guyanensis (ELISAg) against different sera groups. Samples from individuals with cutaneous leishmaniasis (n = 37), mucocutaneous leishmaniasis (n = 8), healthy controls (n = 52), persons infected with Trypanosoma cruzi (n = 11) and mixed infections (n = 14) were included in the study. We calculated sensitivities, specificities, cut offs, and predictive values for the three tests and compared them using ANOVA, kappa index, ROC curves comparison, and confidence intervals calculated by the bootstrap method. Significant differences were found when comparing the OD levels of sera from patients with cutaneous leishmaniasis against healthy controls, but there were no differences when comparing the different ELISAs. The sensitivities calculated for ELISAb and ELISAa were 84.6 and of 88.5% for ELISAg, while the value of specificity for the three tests was 96.2. The kappa index (0.87) and comparison of ROC curves showed similar performance for the three ELISAs (p = 0.225). The high reactivity obtained for these ELISAs in sera of patients with mucocutaneous leishmaniasis indicates this test as an important complement in the diagnosis of the disease.
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Affiliation(s)
- José F Gil
- Instituto de Investigaciones en Enfermedades Tropicales (IIET), Sede Regional Orán.
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Gil JF, Nasser JR, Cajal SP, Juarez M, Acosta N, Cimino RO, Diosque P, Krolewiecki AJ. Urban transmission of American cutaneous leishmaniasis in Argentina: spatial analysis study. Am J Trop Med Hyg 2010; 82:433-40. [PMID: 20207869 DOI: 10.4269/ajtmh.2010.09-0113] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
We used kernel density and scan statistics to examine the spatial distribution of cases of pediatric and adult American cutaneous leishmaniasis in an urban disease-endemic area in Salta Province, Argentina. Spatial analysis was used for the whole population and stratified by women > 14 years of age (n = 159), men > 14 years of age (n = 667), and children < 15 years of age (n = 213). Although kernel density for adults encompassed nearly the entire city, distribution in children was most prevalent in the peripheral areas of the city. Scan statistic analysis for adult males, adult females, and children found 11, 2, and 8 clusters, respectively. Clusters for children had the highest odds ratios (P < 0.05) and were located in proximity of plantations and secondary vegetation. The data from this study provide further evidence of the potential urban transmission of American cutaneous leishmaniasis in northern Argentina.
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Affiliation(s)
- José F Gil
- Instituto de Investigaciones en Enfermedades Tropicales, Universidad Nacional de Salta, Salta, Argentina.
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Aramayo CF, Gil JF, Cruz MC, Poma HR, Last MS, Rajal VB. Diarrhea and parasitosis in Salta, Argentina. J Infect Dev Ctries 2009; 3:105-11. [PMID: 19755739 DOI: 10.3855/jidc.57] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2008] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND Salta city is the capital of the province with the same name located in the northwest of Argentina. Its great growth over the last decade was not organized and the population expanded to occupy places where water and sanitation were not yet available. Although the Arenales River, crossing the city, receives the impact of point and non-point source pollution, the water is used for many purposes, including domestic in the poorest areas, industrial, and recreational with children as the main users. According to the World Health Organization, an estimated 24% of the global disease burden and 23% of all deaths can be attributed to environmental factors. In particular, an estimated 94% of the diarrheal burden of disease is attributable to environment, and is associated with risk factors such as unsafe drinking water and poor sanitation and hygiene. Chronic diarrhea can be caused by an infection or other etiologies; however, most of the times the etiological agent is not identified. METHODOLOGY All the cases of diarrhea and parasitosis reported during 2005 in four public health centers of the city of Salta were classified by gender and age, analyzed, and represented geographically to show areas of higher morbidity rates, which were probably related to environmental factors. RESULTS Water, poor sanitation, and pollution are candidate risk factors. Diarrhea cases showed seasonality, with the highest incidence during late spring and summer, while parasitosis was persistent throughout the year. CONCLUSION Our spatial analysis permitted us to detect the regions of higher incidence of diarrhea and parasitosis during 2005 in the area of study.
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Affiliation(s)
- Cristian F Aramayo
- Instituto de Investigaciones para la Industria Química, Buenos Aires, Argentina
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Abstract
Injuries of the coracoid process are generally rare in traumatic injuries of the shoulder. To our knowledge, there have been fewer than 12 cases of isolated injury of the coracoid process reported in the world literature. We present a case of isolated injury to the coracoid process and discuss its significance.
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Affiliation(s)
- J F Gil
- Department of Traumatology and Orthopedic Surgery, Hospital Regional Carlos Haya, Málaga, Spain
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Arias MJ, Calero E, Gil JF, Paz J. Spinal subarachnoid hematoma in Behçet's disease. Neurosurgery 1987; 20:62-3. [PMID: 3808277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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James TN, Bruschke AV, Böthig S, Dodu SR, Gil JF, Kawamura K, Paulin SJ, Piessens J. Report of WHO/ISFC Task Force on Nomenclature of Coronary Arteriograms. Circulation 1986; 74:451A-455A. [PMID: 3731432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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