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Garzón MJ, Maffey L, Lizuain A, Soto D, Diaz PC, Leporace M, Salomón OD, Schweigmann NJ. Temperature and photoperiod effects on dormancy status and life cycle parameters in Aedes albopictus and Aedes aegypti from subtropical Argentina. Med Vet Entomol 2021; 35:97-105. [PMID: 32827166 DOI: 10.1111/mve.12474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 07/19/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
Aedes albopictus (Diptera: Culicidae) distribution is bounded to a subtropical area in Argentina, while Aedes aegypti (Diptera: Culicidae) covers both temperate and subtropical regions. We assessed thermal and photoperiod conditions on dormancy status, development time and mortality for these species from subtropical Argentina. Short days (8 light : 16 dark) significantly increased larval development time for both species, an effect previously linked to diapause incidence. Aedes albopictus showed higher mortality than Ae. aegypti at 16 °C under long day treatments (16 light : 8 dark), which could indicate a lower tolerance to a sudden temperature decrease during the summer season. Aedes albopictus showed a slightly higher percentage of dormant eggs from females exposed to a short day, relative to previous research in Brazilian populations. Since we employed more hours of darkness, this could suggest a relationship between day-length and dormancy intensity. Interestingly, local Ae. aegypti presented dormancy similar to Ae. albopictus, in accordance with temperate populations. The minimum dormancy in Ae. albopictus would not be sufficient to extend its bounded distribution. We believe that these findings represent a novel contribution to current knowledge about the ecophysiology of Ae. albopictus and Ae. aegypti, two species with great epidemiological relevance in this subtropical region.
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Affiliation(s)
- M J Garzón
- Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución, Grupo de Estudio de Mosquitos, Buenos Aires, Argentina
- Universidad de Buenos Aires. Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
| | - L Maffey
- Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución, Grupo de Estudio de Mosquitos, Buenos Aires, Argentina
- Universidad de Buenos Aires. Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
| | - A Lizuain
- Administración Nacional de Laboratorios e Institutos de la Salud "Dr. Carlos G. Malbrán", Centro Nacional de Diagnóstico e Investigación en Endemoepidemias, Buenos Aires, Argentina
| | - D Soto
- Administración Nacional de Laboratorios e Institutos de la Salud "Dr. Carlos G. Malbrán", Instituto Nacional de Medicina Tropical-INMeT, Puerto Iguazú, Argentina
| | - P C Diaz
- Administración Nacional de Laboratorios e Institutos de la Salud "Dr. Carlos G. Malbrán", Instituto Nacional de Medicina Tropical-INMeT, Puerto Iguazú, Argentina
| | - M Leporace
- Laboratorio de Control de Vectores Entomológicos de Importancia Sanitaria (LaCVEIS), Fundación H. A. Barceló, Santo Tomé, Argentina
| | - O D Salomón
- Administración Nacional de Laboratorios e Institutos de la Salud "Dr. Carlos G. Malbrán", Instituto Nacional de Medicina Tropical-INMeT, Puerto Iguazú, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - N J Schweigmann
- Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución, Grupo de Estudio de Mosquitos, Buenos Aires, Argentina
- Universidad de Buenos Aires. Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
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Cecere MC, Leporace M, Fernández MP, Zárate JE, Moreno C, Gürtler RE, Cardinal MV. Host-Feeding Sources and Infection With Trypanosoma cruzi of Triatoma infestans and Triatoma eratyrusiformis (Hemiptera: Reduviidae) From the Calchaqui Valleys in Northwestern Argentina. J Med Entomol 2016; 53:666-673. [PMID: 26849898 DOI: 10.1093/jme/tjw002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 01/11/2016] [Indexed: 06/05/2023]
Abstract
We assessed the prevalence of infection with Trypanosoma cruzi, parasite genotypes (discrete typing units, DTUs), and the host-feeding sources of domestic and peridomestic Triatoma infestans Klug and Triatoma eratyrusiformis Del Ponte in eight rural communities of the subandean Calchaqui valleys in northwestern Argentina. We sought to analyze their epidemiological role in the context of routine vector surveillance and control actions. Infection with T. cruzi was determined by optic microscopy or polymerase chain reaction (PCR) amplification of the hypervariable region of kinetoplast DNA minicircles. Parasite genotypes were identified through a multi PCR-based strategy. Bloodmeal contents were tested with a direct ELISA assay against nine antisera. Human sleeping quarters (domiciles) and peridomestic dry-shrub fences concentrated most of the T. infestans and T. eratyrusiformis infected with T. cruzi, respectively. The most frequent host-feeding sources of T. infestans were chickens (73.1%) in peridomiciles and humans (73.3%) in domiciles, whereas T. eratyrusiformis fed more often on cavid rodents (92.6%), which thrived in the dry-shrub fences. The main T. cruzi DTU identified in both vectors was T. cruzi I (TcI). Triatoma eratyrusiformis was implicated in the local circulation of TcI among cavies and perhaps mice, but infection with other typically domestic DTUs (TcVI and TcII/TcV/TcVI) indicated overlap between (peri)domestic transmission cycles in both vector species. Because dry-shrub fences were not targeted for routine insecticide spraying, they may act as sources of (peri)domestic reinfestation. Triatoma eratyrusiformis is an emergent secondary vector of T. cruzi and plays a significant role in the local transmission of T. cruzi.
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Affiliation(s)
- M C Cecere
- Laboratorio de Eco-Epidemiología, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires-Instituto de Ecología, Genética y Evolución (IEGEBA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET),Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina (; ; ; ; ),
| | - M Leporace
- Laboratorio de Eco-Epidemiología, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires-Instituto de Ecología, Genética y Evolución (IEGEBA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET),Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina (; ; ; ; )
- Laboratorio de Control de Vectores Entomológicos de Importancia Sanitaria (LaCVEIS), Fundación Barceló, Centeno y Rivadavia. Santo Tomé, Corrientes, Argentina, and
| | - M P Fernández
- Laboratorio de Eco-Epidemiología, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires-Instituto de Ecología, Genética y Evolución (IEGEBA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET),Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina (; ; ; ; )
| | - J E Zárate
- Coordinación Nacional de Control de Vectores (CNCV), Italia 1971, San Miguel de Tucumán, Tucumán, Argentina (; )
| | - C Moreno
- Coordinación Nacional de Control de Vectores (CNCV), Italia 1971, San Miguel de Tucumán, Tucumán, Argentina (; )
| | - R E Gürtler
- Laboratorio de Eco-Epidemiología, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires-Instituto de Ecología, Genética y Evolución (IEGEBA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET),Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina (; ; ; ; )
| | - M V Cardinal
- Laboratorio de Eco-Epidemiología, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires-Instituto de Ecología, Genética y Evolución (IEGEBA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET),Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina (; ; ; ; )
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Borioni R, De Persio G, Leporace M, Di Capua C, Boggi U, Garofalo M. Endovascular treatment of multiple anomalous splenic artery aneurysms in a Jehovah witness. G Chir 2013; 34:42-45. [PMID: 23463933] [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]
Abstract
PURPOSE The present report describes a full endovascular treatment of a multiple anomalous (Splenic artery aneurysms) SAA with combination of coils embolization and proximal occlusion of the splenic artery with the Amplatzer vascular plug. CASE REPORT A 53-year-old Jehovah witness woman presented with multiple aneurysms arising from an anomalous splenic artery. An endovascular treatment was performed by implantation of multiple coils and an Amplatzer Vascular Plug. A CT scan 2 months after the procedure showed complete thrombosis of the aneurysms. DISCUSSION Aneurysms involving an anomalous or aberrant splenic artery are rarely reported in the literature. Their surgical treatment involves potential difficulties as a consequence of anatomical position and vascular anomalies. A fully endovascular technique can be much more attractive compared to any surgical management, providing an effective and minimally invasive option.
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Sergiacomi G, Schillaci O, Leporace M, Laviani F, Carlani M, Manni C, Danieli R, Simonetti G. Integrated multislice CT and Tc-99m Sestamibi SPECT-CT evaluation of solitary pulmonary nodules. Radiol Med 2006; 111:213-24. [PMID: 16671379 DOI: 10.1007/s11547-006-0022-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE The purpose of this study was to evaluate efficacy of multislice computed tomography (MSCT) and single photon emission computed tomography (SPECT)-CT with Tc-99m Sestamibi in the assessment of solitary pulmonary nodules of uncertain significance. Scintigraphy was performed using a 'hybrid' g-camera that allows simultaneous acquisition of SPECT and CT images, with interesting results in diagnostic oncology. MATERIALS AND METHODS Between September 2003 and August 2004, 23 patients with a solitary pulmonary nodule detected on CT underwent SPECT-CT using Tc-99m Sestamibi as a radiotracer. Nodules with positive scintigraphy were immediately subjected to biopsy or surgical resection. Nodules with negative scintigraphy were followed up after 3-4 months by MSCT with automatic segmentation software (Advanced Lung Analysis, ALA) and histological characterisation. RESULTS Of the 23 nodules (size range 0.8-2 cm) discovered with MSCT, 11 showed intense uptake of Tc-99m Sestamibi. Ten lesions were true positive: seven adenocarcinomas, one squamous cell carcinoma, one large cell carcinoma and one metastasis. The only false positive was histologically classified as a large cell granuloma. Twelve lesions had negative scintigraphy: five fibrous lesions, three hamartomas, three granulomas and one adenocarcinoma (false negative). Benign nodules without tracer uptake underwent another CT scan 3-4 months later, which confirmed stability of the nodule size. Correlation of Sestamibi SPECT with histology showed sensitivity (Se) of 90.9 %, specificity (Sp) of 91.6 %, diagnostic accuracy of 91.3 %, positive predictive value (PPV) of 90.9% and negative predictive value (NPV) of 91.6 %. CONCLUSIONS The integrated use of MSCT and Tc-99m Sestamibi SPECT-CT could be very useful in the management of solitary pulmonary nodules (SPNs). In particular, in our preliminary study, scintigraphy provided significant diagnostic information to differentiate benign from suspicious pulmonary nodules. The use of scintigraphy could be helpful to anticipate histological assessment and surgical treatment of SPNs identified at CT.
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Affiliation(s)
- G Sergiacomi
- Dipartimento di Diagnostica per Immagini e Radiologia Interventistica, Università degli Studi di Roma Tor Vergata, Italy.
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Fanucci E, Leporace M, Di Costanzo G, Fiaschetti V, Simonetti G. Multidetector CT and dentascan software: dosimetric evaluation and technique improvement. Radiol Med 2006; 111:130-8. [PMID: 16623313 DOI: 10.1007/s11547-006-0014-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The development of new operative techniques in oral and maxillofacial surgery within the last few years has led to an increasing demand for Dentascan examination, also in paediatric patients. It is necessary to modify acquisition parameters to reduce the absorbed dose. The aim of this study was to define a Dentascan protocol in which a reduced X-ray dose could be used. MATERIALS AND METHODS Dosimeters were applied to the eyes, mouth, parotid glands, thyroid and back of the neck of an anthropomorphic Plexiglas phantom that underwent multidetector computed tomography (MDCT) Dentascan examinations. Both 120kV and 80 kV were used to study the mandibular and maxillary arches. RESULTS Examinations obtained with the 80 kV protocol showed a ten-fold reduction in the absorbed dose, without affecting image quality. CONCLUSIONS We suggest a Dentascan protocol that reduces the X-ray dose administered to the patient while ensuring the same high diagnostic accuracy.
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Affiliation(s)
- E Fanucci
- Dipartimento di Diagnostica per Immagini e Radiologia Interventistica, Università degli Studi di Roma "Tor Vergata", Policlinico Tor Vergata, Viale Oxford 81, 1-00133 Roma, Italy.
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Sergiacomi G, Leporace M, Carlani M, Laviani F, Di Costanzo G, Schillaci O, Simonetti G. P-384 Multislice CT and SPECT-CT: Correlation in diagnosis ofpulmonary nodules. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)80877-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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