165 results on '"N. Botto"'
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2. Resultados preliminares del estudio de los lípidos del cuerpo graso y de la hemolinfa en insectos
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Eduardo N. Botto
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Insectos ,lípidos ,hemolinfa ,metabolismo ,química ,bioquímica ,Ecology ,QH540-549.5 ,Zoology ,QL1-991 - Abstract
El conocimiento del metabolismo de los lípidos en los insectos podría proporcionar una mejor base para comprender los estudios nutricionales. Se estudiaron los lípidos grasos y hemolinfos de Diatraea saccharalis (F.), y aquí se presentan algunos resultados preliminares.
- Published
- 2020
3. Biological control of the Eucalyptus bronze bug Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae) in Argentina: release and recovery of the introduced egg parasitoid Cleruchoides noackae (Hymenoptera: Mymaridae)
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Andrea Verónica Andorno, Carmen M. Hernández, Eliana M. Cuello, Cynthia L. Cagnotti, Eduardo N. Botto, and Silvia N. López
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Insect Science ,Agronomy and Crop Science - Published
- 2022
4. Biological traits of Ascogaster quadridentata an endoparasitoid of the codling moth
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Carmen M. Hernández, Andrea V. Andorno, and Eduardo N. Botto
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Insect Science ,Plant Science - Published
- 2022
5. Evaluación de tres clases de trigo para la cría de Sitotroga cerealella (Lepidoptera: Gelechiidae) como hospedante utilizado en la cría de enemigos naturales
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Lucía M. MÉNDEZ, Eduardo N. BOTTO, Dora FLORES, Cynthia L. CAGNOTTI, Silvia N. LÓPEZ, and Mariana M. VISCARRET
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Zoology ,QL1-991 - Abstract
La estandarización de protocolos para la cría artificial es esencial para lograr una producción de insectos adecuada en calidad y cantidad. Los huevos de Sitotroga cerealella Olivier se utilizan para la cría de parasitoides del género Tricho- gramma. En el presente trabajo se evaluó el efecto de tres tipos de trigo (pan, can- deal, Klein Tauro) sobre parámetros biológicos de la polilla y del parasitoide oófago Trichogramma nerudai (Pintureau & Gerding). La cría de la polilla se realizó sobre cada tipo de trigo y sobre los huevos obtenidos se evaluaron aspectos biológicos del parasitoide. Las clases de trigo se diferenciaron en la calidad de sus proteínas, lípidos y contenido de humedad. Para los distintas tipos de trigo se encontraron diferencias significativas en el porcentaje de emergencia, la fecundidad, el tiem- po de desarrollo y la proporción sexual de las polillas. No existieron diferencias significativas en el porcentaje de emergencia, fecundidad y proporción sexual de parasitoides criados sobre huevos de polillas procedentes de diferentes clases de trigo. El análisis de aminoácidos y lípidos, los resultados sobre la biología de la polilla y cierta tendencia observada en la fecundidad del parasitoide, sugieren que los trigos más adecuados para la cría son pan y candeal.
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- 2016
6. Association of eNOS Glu298Asp polymorphism with cardiometabolic risk and inducible myocardial ischemia in patients with stable coronary artery disease
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M Modena, C Vecoli, C Caselli, G Todiere, R Poddighe, S Valente, F Bandini, A Natali, L Ghiadoni, A Clerico, S Vittorini, N Botto, M G Andreassi, M Emdin, and D Neglia
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Cardiology and Cardiovascular Medicine - Abstract
Background The endothelial nitric oxide synthase (eNOS) gene deficiency is known to cause insulin resistance, hypertension, hypertriglyceridemia and impaired coronary vasodilating capability in animal models. In the general clinical population, the eNOS gene polymorphism (Glu298Asp, G894T), able to reduce eNOS activity, was associated either with features of the metabolic syndrome or prevalence of coronary artery disease (CAD). Purpose To investigate the possible association of Glu298Asp polymorphism with cardiometabolic risk [insulin resistance, increased triglycerides (TG) and low HDL-cholesterol (HDL-C)], obstructive CAD and inducible myocardial ischemia in stable patients with suspected coronary disease. Methods Six cardiology units enrolled a total of 506 consecutive patients (314 males; mean age 62±9 years) referred for suspected CAD within the BIOGEN-CARE Tuscan Region Italian Study. Among these, 325 patients underwent stress ECG or cardiac imaging to assess the presence of inducible ischemia and 436 patients underwent non invasive computerized tomography or invasive coronary angiography to assess the presence of obstructive CAD (>50% stenosis in at least one major coronary vessel). Blood samples were collected from each patient for genotyping and measurements of lipid and glucose parameters. The TG/HDL-C ratio and the TyG-index [ln(TG × Fasting plasma glucose/2)] were used as synthetic markers of atherogenic dyslipidemia and insulin resistance, main components of the cardiometabolic risk. Results In the whole population, 49.6% of patients were homozygous for the G894allele, 40.9% heterozygotes, and 9.5% homozygous for T894. Myocardial ischemia was documented in 160/325 (49.2%) patients undergoing stress testing and obstructive CAD in 178/436 (40.8%) patients undergoing coronary angiography. Patients carrying the T allele (dominant model TT+GT vs GG) had higher TG/HDL ratio (2.7±1.8 vs 2.5±1.9, P=0.03) (Figure) without differences in other lipid and glucose markers. Independent predictors of obstructive CAD were age, gender, obesity, diabetes and TG/HDL-C ratio but not the the T allele (OR 0.80; CI 0.51–1.25; ns). Independent predictors of inducible ischemia were age, gender, obesity and the T allele (OR 1.91; CI 01.19–3.08; P=0.007). Stratifying the population for both obstructive CAD and ischemia, the T allele was associated with increased risk of ischemia (OR 1.96; CI 1.11–3.44; P=0.02) even after adjustment for the presence of obstructive CAD (OR 3.09; CI 1.85–5.78; P Conclusions In stable patients with suspected CAD, the eNOS Glu298Asp gene polymorphism is an independent risk factor for inducible myocardial ischemia and is significantly associated with the specific cardiometabolic risk expressed by high TG and low HDL-C which independently predicts obstructive CAD. Funding Acknowledgement Type of funding sources: Public grant(s) – National budget only. Main funding source(s): “BIOhumoral and GENetic predictors of CARdiac Evolving phenotype in Ischemic Heart Disease (BIOGENCARE-IHD)”; funded by Toscan Region-Programma per la ricerca regionale in materia di Salute 2009
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- 2022
7. Primera cita de la Argentina de Ophelimus maskelli (Ashmead) (Hymenoptera: Eulophidae) y su parasitoide, Closterocerus chamaeleon (Girault) (Hymenoptera: Eulophidae)
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Daniel A AQUINO, Carmen M. HERNANDEZ, Eliana M. CUELLO, Andrea V. ANDORNO, and Eduardo N. BOTTO
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Zoology ,QL1-991 - Abstract
Se cita por primera vez de la Argentina la presencia de la avispa galí - cola exótica Ophelimus maskelli (Ashmead) (Hymenoptera: Eulophidae) y su para - sitoide natural, Closterocerus chamaeleon (Girault) (Hymenoptera: Eulophidae) en Eucalyptus camaldulensis de la provincia de Buenos Aires. Ophelimus maskelli es una especie invasora de origen Australiano que ha sido reportada como plaga de los eucaliptos en numerosos países de Asia, Europa y América. Closterocerus chamaleon es un parasitoide exótico cuyo potencial como biocontrolador de O. maskelli está siendo evaluado en algunos países.
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- 2014
8. Primeros estudios sobre asociaciones tróficas de interés para la sanidad forestal en Eucalyptus spp.
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Eliana M. CUELLO, Andrea V. ANDORNO, Carmen M. HERNÁNDEZ, Vicente DELL\u2019 ARCIPRETE, and Eduardo N. BOTTO
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Zoology ,QL1-991 - Abstract
Se llevaron a cabo muestreos sobre las principales plagas de eucaliptos y sus enemigos naturales en dos sitios de la provincia de Buenos Aires. Se cuantificó la abundancia de las plagas sobre diversas especies de eucaliptos y se registraron los insectos entomófagos asociados, con el fin de identificar las interacciones que podrían ser utilizadas en estrategias de control biológico de las plagas estudiadas. Se presenta una red trófica cualitativa Eucalyptus – plaga – enemigo natural.
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- 2014
9. 1562 Molecular characterization of dupilumab use in atopic dermatitis and impact on allergen sensitivity testing
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J.Q. Jin, S. Kumar, Z. Huang, J. Liu, K.G. Elhage, R.K. Spencer, M.S. Davis, M. Hakimi, I. Neuhaus, N. Botto, T. Bhutani, and W. Liao
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Cell Biology ,Dermatology ,Molecular Biology ,Biochemistry - Published
- 2023
10. C63 PHENOTYPE – GENOTYPE RELATIONSHIP IN ARRHYTHMOGENIC CARDIOMYOPATHY
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I Gueli, B Alderotti, G Todiere, C Grigoratos, M Modena, N Botto, S Vittorini, G Vergaro, A Giannoni, A Aimo, C Passino, G Aquaro, M Emdin, and A Barison
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Cardiology and Cardiovascular Medicine - Abstract
Background Arrhythmogenic cardiomyopathy (ACM) is a primary disease of the myocardium with arrhythmic manifestations and fibro–fatty replacement either of the right (RV) or the left ventricle (LV) at the cardiac magnetic resonance (CMR). Over the last decade, different mutations in cardiac genes associated with heterogeneous phenotypes have been identified. Aim To investigate the genotype–phenotype relationships in ACM patients. Firstly, the phenotypic expression was defined in definite mutation carriers. Secondly, the prognostic significance of mutations was assessed across different phenotypes. Methods The study population included 281 patients with suspected ACM, based on family history, clinical and electrocardiographic evaluation, echocardiographic and CMR findings (Fig.1), studied at our Institution since 2012. All patients underwent genetic evaluation using Sanger sequencing and NGS of mutations in desmosomal (desmoplakin [DSP], plakophilin–2[PKP2], plakoglobin[JUP], desmoglein–2 [DSG2], desmocollin–2 [DSC2]) or non desmosomal genes. The composite endpoint included cardiac death, sustained and non–sustained ventricular tachycardia (VT), ventricular fibrillation (VF), appropriate defibrillator shock/antitachycardia pacing (ATP). Results The genetic test was positive in 113 patients (40%), 82 (73%) for desmosomal genes (41 DSP, 15 DSG2, 15 PKP2, 5 JUP, 6 DSC2), and 31 (27%) for non–desmosomal genes (4 titin, 2 TMEM 43, 2 lamin A/C, 23 others). Gene–positive compared to gene–negative (n = 168, 60%) patients showed a higher prevalence of LV ejection fraction (EF)
- Published
- 2022
11. Asociaciones áfido-parasitoide (Hemiptera: Aphididae; Hymenoptera: Braconidae, Aphidiinae) en cultivos hortícolas orgánicos en Los Cardales, Buenos Aires, Argentina Aphid-parasitoid associations (Hemiptera: Aphididae; Hymenoptera: Braconidae, Aphidiinae) on organic vegetable crops in Los Cardales, Buenos Aires, Argentina
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Andrea V. Andorno, Silvia N. López, and Eduardo N. Botto
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Aphididae ,Parasitoides Aphidiinae ,Hortalizas ,Asociaciones tritróficas ,Aphidiinae parasitoids ,Vegetables ,Tritrophic associations ,Zoology ,QL1-991 - Abstract
Diez especies de áfidos (Hemiptera: Aphididae) se hallaron parasitados por siete especies de parasitoides (Hymenoptera: Braconidae, Aphidiinae) en cultivos hortícolas orgánicos. Myzus persicae (Sulzer) fue el áfido más frecuentemente encontrado sobre una amplia variedad de cultivos, y con mayor diversidad de parasitoides asociados. Aphidius colemani Viereck fue el afidiino más usual, que ataca varias especies de áfidos. Ocho asociaciones tritróficas, involucrando Aphidius matricariae Haliday, han sido registradas por primera vez para la Argentina.Ten aphid species (Hemiptera: Aphididae) were found parasitized by seven aphid parasitoid species (Hymenoptera: Braconidae, Aphidiinae) on organic vegetable crops. Myzus persicae (Sulzer) was the most frequent aphid found on a wide variety of crops, with the largest parasitoid diversity associated. Aphidius colemani Viereck was the most frequent aphidiine attacking several species of aphids. Eight tritrophic associations involving Aphidius matricariae Haliday are reported for the first time for Argentina.
- Published
- 2007
12. Evaluación de algunos insecticidas para el control de la «polilla del tomate», Tuta absoluta (Lepidoptera: Gelechiidae) y su efecto residual sobre el parasitoide Trichogrammatoidea bactrae (Hymenoptera: Trichogrammatidae) Efficacy of insecticides against the «tomato moth», Tuta absoluta (Lepidoptera: Gelechiidae) and their residual effects on the parasitoid Trichogrammatoidea bactrae (Hymenoptera: Trichogrammatidae)
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María B. Riquelme Virgala, Eduardo N. Botto, and César Lafalce
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Manejo integrado ,Enemigo natural ,Control químico ,Tuta absoluta ,Integrated pest management ,Natural enemy ,Chemical control ,Zoology ,QL1-991 - Abstract
La «polilla del tomate», Tuta absoluta (Meyrick), es una plaga clave de este cultivo en Argentina. Su manejo integrado debería incluir una selección de productos fitosanitarios que sean eficaces para su control y, al mismo tiempo, selectivos respecto de sus enemigos naturales. El objetivo de este trabajo fue evaluar la capacidad de control de los insecticidas triflumurón, clorfenapir, abamectin y una cepa experimental de Bacillus thuringiensis (Bt) sobre la plaga, y el poder residual de los mismos sobre Trichogrammatoidea bactrae Nagaraja. Se registró la mortalidad de la polilla cada cuatro días, desde la aplicación hasta la emergencia de los adultos. El efecto sobre el parasitoide, se evaluó a través del número de huevos parasitados por hembra expuesta durante 48 horas a folíolos tratados, y su mortalidad luego de 1, 3, 7, 14 y 30 días de la pulverización. Todos los productos ocasionaron una mortalidad de T. absoluta mayor al 65% después de 12 días de aplicados. El Bt fue el único insecticida que no afectó la supervivencia y el parasitismo de T. bactrae . Estos resultados aportan información de interés para la selección de plaguicidas, a emplearse en programas de manejo integrado.The «tomato moth», Tuta absoluta (Meyrick) is one of the key pests of tomato crops in Argentina. The compatible use of chemical and biological control is the main purpose of integrated pest management. Selective pesticides that can be successfully used to control pest without adverse side effects on natural enemies are highly required. The aim of this work was to evaluate the efficacy of control of T. absoluta and the residual effect on the oophagous parasitoid, Trichogrammatoidea bactrae Nagaraja of the following insecticides: triflumuron, abamectin, chlorfenapyr, and an experimental strain of Bacillus thuringiensis (Bt). Mortality of T. absoluta was evaluated every 4 days from pesticide spraying until adult emergency. The effect of pesticides on the performance of the parasitoid was evaluated at 1, 3, 7, 14 and 30 days after pesticide spraying. All insecticides tested caused >65% mortality of tomato moth 12 days after application. Only Bt had no harmful effects on performance of T. bactrae . The results obtained are useful to pesticide selection in integrated pest management programs.
- Published
- 2006
13. Malformaciones gástricas y del intestino delgado
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Carmen Capito, Thomas Blanc, Christophe Chardot, S Beaudoin, Erik Hervieux, A Broch, and N Botto
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03 medical and health sciences ,030219 obstetrics & reproductive medicine ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Philosophy ,Humanities - Abstract
Las malformaciones del tubo digestivo son, en frecuencia, el tercer grupo de anomalias despues de las malformaciones renales y del sistema nervioso central. Su incidencia se estima en uno de cada 3.000-4.000 nacimientos. En la gran mayoria de los casos, se caracterizan por sintomas obstructivos en el periodo pre y posnatal. Su tratamiento es quirurgico, con caracter mas o menos urgente segun la etiologia y el nivel de la obstruccion. Algunas ocurren muy temprano en el desarrollo, por lo que reciben la denominacion de embriopatias (antes de las 10 semanas de amenorrea [SA]). Pueden ir acompanadas entonces de un cortejo de otras malformaciones locales o generales que deben detectarse. Otras se forman mas tarde en el embarazo y corresponden a fetopatias (mas alla de las 10 SA). Al nacer, aparte de la exploracion fisica inicial, la radiografia toracoabdominal permite orientar la continuacion de las exploraciones radiologicas antes de decidir la estrategia quirurgica. Las malformaciones colicas (atresia colica, duplicacion colica, malformaciones anorrectales, enfermedad de Hirschsprung, seudoobstruccion intestinal cronica) no se tratan en este articulo y se desarrollan en articulos especificos de la EMC.
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- 2019
14. Cold storage of Trichogramma nerudai using an acclimation period
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Marcelo Lois, Eduardo N. Botto, Mariana M. Viscarret, Silvia N. López, and Cynthia L. Cagnotti
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0106 biological sciences ,010602 entomology ,Horticulture ,Animal ecology ,Insect Science ,Period (gene) ,Cold storage ,Biology ,01 natural sciences ,Agronomy and Crop Science ,Trichogramma nerudai ,Acclimatization ,010606 plant biology & botany - Abstract
The availability of suitable storage methods for parasitoids is a valuable tool in biological control programs. Studies were conducted to investigate the effects of cold storage with acclimation period on the quality of Trichogramma nerudai Pintureau and Gerding. Prepupae were stored 50, 75 and 100 days at 5 °C with a previous acclimation period of 10 or 20 days at 12 °C. It was possible to arrest the development of T. nerudai. All the treatments with acclimation period of ten days had emergence values under 10% that were not useful to establish a cold storage protocol. Twenty days of acclimation had a positive impact on cold storage tolerance at 50 and 75 days. The adult emergence, the emergence time, the sex ratio, the parasitism and the progeny quality have not been affected by the storage of T. nerudai using an acclimation period of 20 days and until 50 days under cold temperature.
- Published
- 2018
15. Dispersion and Persistence of Trichogrammatoidea bactrae (Nagaraja) over Tuta absoluta (Meyrick), in Tomato Greenhouses
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Cynthia L. Cagnotti, Eduardo N. Botto, M Riquelme Virgala, and Silvia N. López
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Male ,0106 biological sciences ,Trichogrammatoidea bactrae ,Wasps ,Biological pest control ,Greenhouse ,Biology ,01 natural sciences ,Persistence (computer science) ,Parasitoid ,Solanum lycopersicum ,Dispersion (optics) ,Animals ,Natural enemies ,Pest Control, Biological ,Ovum ,fungi ,04 agricultural and veterinary sciences ,Environment, Controlled ,biology.organism_classification ,Lepidoptera ,Plant Leaves ,010602 entomology ,Horticulture ,Insect Science ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Female ,Tuta absoluta ,Animal Distribution - Abstract
Inundative biological control depends on the ability of natural enemies to disperse and persist in the environment. The objective was to evaluate the dispersion and persistence of Trichogrammatoidea bactrae (Nagaraja) on Tuta absoluta (Meyrick) eggs. Inundative releases of this parasitoid were performed in experimental tomato greenhouses. For vertical dispersion, leaves of the upper and middle third of plants were artificially infested with T. absoluta eggs; for horizontal dispersion, plants at increasing distances from a release point were infested. These eggs were renewed at days 2 and 4 to evaluate persistence. The amount of parasitized patches was registered. Logistic regression analysis was used. The position of the eggs in the plant did not affect the DE (discovery efficiency: proportion of parasitized patches). Time since release negatively affected the DE, while distance affected it only when plants were higher. These results could be used to adjust the release methodology of T. bactrae.
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- 2017
16. Primera cita de Megastigmus zebrinus Grissell de Argentina (Hymenoptera: Torymidae) asociado a agallas de Leptocybe invasa (Hymenoptera: Eulophidae)
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Carmen M. HERNÁNDEZ, Daniel A. AQUINO, Eliana M. CUELLO, Andrea V. ANDORNO, and Eduardo N. BOTTO
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Zoology ,QL1-991 - Abstract
Se cita por primera vez de Argentina la presencia de Megastigmus zebrinus Grissell (Hymenoptera: Torymidae) asociada a agallas de Eucalyptus camaldulensis Dehnhardt (Myrtaceae) producidas por Leptocybe invasa Fisher & LaSalle (Hymenoptera: Eulophidae) de la provincia de Buenos Aires. Megastimus zebrinus fue hallada en Australia, su país de origen, y en Sudáfrica.
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- 2015
17. Development of Glycaspis brimblecombei Moore (Hemiptera: Aphalaridae) on Eucalyptus camaldulensis Dehnh. and Eucalyptus dunnii Maiden
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Silvia N. López, Eliana Marina Cuello, Eduardo N. Botto, Andrea V. Andorno, and Carmen M. Hernández
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0106 biological sciences ,Population ,Biology ,Aphalaridae ,010603 evolutionary biology ,01 natural sciences ,Plant Injuries ,Eucalyptus dunnii ,Botany ,Pest Insects ,education ,Nymph ,education.field_of_study ,Eucalyptus Camaldulensis ,Glycaspis Brimblecombei ,Forestry ,Eucalyptus ,Insectos Dañinos ,010602 entomology ,Horticulture ,Eucalyptus camaldulensis ,Pests of Plants ,Plagas de Plantas ,Insect Science ,Instar ,Eucaliptus Dunnii ,Daños a las Plantas ,Agronomy and Crop Science ,Lerp - Abstract
1 The red gum lerp psyllid Glycaspis brimblecombei is an invasive insect species, native from Australia, that specifcally feeds on Eucalyptus trees. It has invaded several countries throughout the world. In Argentina, it was frst recorded in 2005, although little is known about its ecology in the region. 2 We assessed G. brimblecombei population development on Eucalypus camaldulensis and Eucalyptus dunnii using samples of branches for the immature stages and yellow sticky traps for the adults. We also identifed the meteorological variables associated with changes in the red gum lerp psyllid abundance. 3 The abundance of eggs, nymphs and adults stages of G. brimblecombei was signifcantly greater on E. camaldulensis than on E. dunnii in the 2 years of the survey. 4 Glycaspis brimblecombei development was complete on E. camaldulensis where all instars were present, even in the unfavourable seasons. The full development of the psyllid population was not observed in E. dunnii where a high mortality of the frst and second nymphal instars was detected. 5 Temperature and relative humidity were the variables that mostly affected red gum lerp psyllid abundance, whereas no effect of rainfall was detected. Inst. de Microbiología y Zoología Agrícola IMyZA Fil: Lopez, Silvia Noemi. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones Lucha Biológica; Argentina Fil: Andorno, Andrea Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones Lucha Biológica; Argentina Fil: Hernandez, Carmen Marcela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones Lucha Biológica; Argentina Fil: Botto, Eduardo Norberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones Lucha Biológica; Argentina Fil: Cuello, Eliana Marina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones Lucha Biológica; Argentina
- Published
- 2017
18. Acceptability and suitability ofTuta absolutaeggs from irradiated parents to parasitism byTrichogramma nerudaiandTrichogramma pretiosum(Hymenoptera: Trichogrammatidae)
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Cynthia L. Cagnotti, Mariana M. Viscarret, María Riquelme, Carmen M. Hernández, Silvia N. López, Andrea V. Andormo, and Eduardo N. Botto
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0106 biological sciences ,biology ,fungi ,Biological pest control ,Parasitism ,Forestry ,Gelechiidae ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Parasitoid ,Lepidoptera genitalia ,Toxicology ,010602 entomology ,Trichogrammatidae ,Insect Science ,Botany ,Tuta absoluta ,Agronomy and Crop Science ,Trichogramma - Abstract
Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most devastating pests of tomato crops. We studied the acceptability and suitability of eggs laid by irradiated T. absoluta pairs to parasitism by the parasitoids Trichogramma nerudai and Trichogramma pretiosum. Trichogramma absoluta pupae were irradiated with X-radiation (20834 R) and the emerged adults were separated into couples according to the crosses: ♂U × ♀U, ♂I × ♀U, ♂U × ♀I (where ‘U’ is untreated and ‘I’ is irradiated). In a no-choice experiment, 40 eggs from each cross were exposed to a female parasitoid for 24 h. All T. absoluta eggs were accepted for oviposition by T. nerudai and were suitable for its development. However, eggs from irradiated females were significantly less parasitized than those from untreated females. Trichogramma pretiosum showed low parasitism on eggs from all crosses. In a choice experiment, both T. nerudai and T. pretiosum showed no differences in the parasitism of eggs from irradiated (n = 40) and non-irradiated female moths (n = 40). These results indicate that eggs laid by irradiated parents were acceptable for oviposition and suitable for the development of these parasitoids, and also support the idea that the inherited sterility technique could be used in an integrated approach with egg parasitoids to control T. absoluta.
- Published
- 2016
19. Evaluación del parasitoide Trichogramma pretiosum (Hymenoptera: Trichogrammatidae) como agente de control biológico de Anticarsia gemmatalis (Lepidoptera: Noctuidae) en condiciones de laboratorio
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Gonzalo Segade and Eduardo N. Botto
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Environmental sciences ,GE1-350 ,Ecology ,QH540-549.5 - Abstract
Los parasitoides oófagos del género Trichogramma son utilizados a nivel mundial como agentes de control de lepidópteros plaga de numerosos cultivos. El estudio de parámetros biológicos poblacionales,entre ellos la tasa intrínseca de crecimiento poblacional (rm) ha sido de gran utilidad para evaluarla efictividad de numerosas especies de parasitoides. En el presente trabajo se evalúa el potencial de una población local de Trichogramma pretiosum como agente de control de Anticarsia gemmatalis. Para esto, se estimaron y analizaron algunos parámetros biológicos poblacionales de los paras itoides mediante técnicas de tabla de vida y fecundidad en condiciones controladas de temperatura (25 ± 1oC), humedad relativa (50-70%) y fotoperíodo (14L:10O). Se obtuvieron lossiguientesresultados: longevidad media de hembras adultas: 6.53 d; 1x 50%: 6d; máximo mx ; 20 / / d, r m : 0.41; R0 : 41.48 / ; T: 8.99 d. Estos valores indican que T. pretiosum podría resultar de gran utilidad como agente de control de A. genunatalis en cultivos de soja de nuestro país.
- Published
- 1996
20. Parámetros biológicos del parasitoide Encarsia formosa (Gahan) (Hymenoptera: Aphelinidae) en condiciones de laboratorio
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Silvia N. López and Eduardo N. Botto
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Environmental sciences ,GE1-350 ,Ecology ,QH540-549.5 - Abstract
Encarsia formosa es el parasitoide más utilizado para el control biológico de la mosca blanca de los invernáculos, Trialeurodes vaporariorum. Dado que en la Argentina no existen antecedentes sobre estudios biológicos de este entomófago, el objetivo de este trabajo fue analizar los siguientes parámetros biológicos de E. formosa: supervivencia (1x) fecundidad específica (mx), tasa intrínseca de incremento poblacional (rm) tasa neta de reproducción (R0) y tiempo generacional (T). Para ello se obtuvieron las tablas de vida y de fecundidad utilizando a T. vaporariorum como huésped y al tomate como planta hospedera. Bajo las condiciones experimentales utilizadas se obtuvieron los siguientes resultados: mortalidad en el estado de pupa =4%; longevidad media del adulto =10.4 d; lx50 (adultos)=8-9 d; r m=0.283 pupas parasitadas / ♀/ d, R0=155.6 pupas parasitadas/hembra; T=17.9 d. Las curvas lx -mx y los parámetros poblacionales analizados indican que la población local de E. formosa estudiada posee un gran potencial para ser utilizada como agente de biocontrol de T. vaporariorum.
- Published
- 1995
21. Inherited sterility in Tuta absoluta (Lepidoptera: Gelechiidae): Pest population suppression and potential for combined use with a generalist predator
- Author
-
Carmen M. Hernández, Leonela Zusel Carabajal Paladino, Cynthia L. Cagnotti, Andrea V. Andorno, Eduardo N. Botto, and Silvia N. López
- Subjects
0106 biological sciences ,Polilla del Tomate ,Sterility ,Combined use ,Population ,Sterile Insect Release ,Biological Control ,010603 evolutionary biology ,01 natural sciences ,Lepidoptera genitalia ,Liberación de Insectos Estériles ,Control Biológico ,Generalist predator ,Botany ,Control de Plagas ,education ,Ecology, Evolution, Behavior and Systematics ,education.field_of_study ,biology ,Scrobipalpula Absoluta ,biology.organism_classification ,Gelechiidae ,Pest of Plants ,010602 entomology ,Horticulture ,Insect Science ,Plagas de Plantas ,Tuta Absoluta ,Tuta absoluta ,PEST analysis ,Pest Control - Abstract
Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most devastating pests of tomato. We studied whether partially sterile T. absoluta males and fully sterile females were capable of suppressing wild populations of this moth in semi-controlled conditions. After irradiating T. absoluta pupae with 200 Gy, emerged males and females were released at 10:1 (treated:untreated) and 15:1 over-flooding ratios inside field cages containing tomato plants. The number of eggs and larvae produced was recorded once per wk during 3 mo. An over-flooding ratio of 10:1 caused a decline in larvae production compared with the untreated control cages, but these differences were not statistically significant. Using an over-flooding ratio of 15:1, the moth population in the cages with irradiated insects decreased significantly compared with those in the untreated control cages. In addition, the possibility of combining inherited sterility and a natural enemy as a strategy to manage this pest was investigated. We studied in no choice and choice tests the predation behavior of females of the egg predator Tupiocoris cucurbitaceus (Hemiptera: Miridae) on eggs derived from the following parental T. absoluta crosses: U × U (control), U × I and I × U (where U = untreated, I = irradiated). In the no choice test, females of the T. cucurbitaceus readily consumed T. absoluta eggs regardless of their origin. In the choice test, T. cucurbitaceus females consumed similar numbers of eggs of untreated parents and eggs oviposited from crosses in which the male had been irradiated. However, the mirid females preyed on significantly more eggs—roughly 20% more—from irradiated females than on eggs from untreated females. We conclude that it is possible to achieve a certain level of suppression of a T. absoluta wild population through the release of irradiated insects, and that it is technically feasible to combine the use of the predator T. cucurbitaceus with inherited sterility to control this moth pest. Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) es una de las plagas más devastadoras de los cultivos de tomate. Se estudió si machos parcialmente estériles y hembras totalmente estériles de T. absoluta son capaces de suprimir poblaciones salvajes de esta polilla en condiciones semicontroladas. Después de la irradiación de pupas de T. absoluta a 200 Gy, machos y hembras emergidos fueron liberados con una relación de 10:1 (tratados:no tratados) en el interior de jaulas que contenían plantas de tomate. El número de huevos y larvas producido fue registrado una vez a la semana durante tres meses. El experimento se repitió con una relación de 15:1. El uso de una relación de 10:1 causó una disminución de la población de larvas en comparación con las jaulas control, pero estas diferencias no fueron estadísticamente significativas. Cuando la relación fue 15:1, la población de la polilla en las jaulas con los insectos irradiados disminuyó significativamente en comparación con las jaulas control. Además, se analizó la posible compatibilidad de la esterilidad heredada y el control biológico como estrategia para el control de esta plaga. Se estudió en pruebas sin elección y con elección si los huevos provenientes de los siguientes cruzamientos parentales de T. absoluta: ♀U × ♂U (control), ♀U × ♂I y ♀I × ♂U (donde U = no irradiado, I = irradiado) son igualmente aceptados para el consumo por hembras de Tupiocoris cucurbitaceus (Hemiptera: Miridae). En la prueba sin elección, las hembras de T. cucurbitaceus consumieron un elevado número de huevos de T. absoluta, independientemente de su origen. En la prueba de elección, las hembras de T. cucurbitaceus consumieron tanto huevos provenientes de parentales no tratados como huevos de parentales con el macho irradiado. Sin embargo, las hembras del mírido predaron significativamente más huevos de hembras irradiadas que huevos de hembras no tratadas. Se concluyó que es posible alcanzar un cierto nivel de supresión de una población salvaje de T. absoluta mediante la liberación de insectos irradiados y que es factible combinar el uso del predador T. cucurbitaceus con IS para controlar esta polilla plaga. Inst. de Microbiología y Zoología Agrícola IMyZA Fil: Cagnotti, Cynthia Lorena. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones para Lucha Biológica; Argentina Fil: Andorno, Andrea Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones para Lucha Biológica; Argentina Fil: Hernández, Carmen Marcela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones para Lucha Biológica; Argentina Fil: Carabajal Paladino, Leonale Suzel. Biology Centre CAS. Institute of Entomology; República Checa. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Genética; Argentina Fil: Botto, Eduardo Norberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones para Lucha Biológica; Argentina Fil: López, Silvia Noemi. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola. Insectario de Investigaciones para Lucha Biológica; Argentina
- Published
- 2016
22. Effects of X-rays on Tuta absoluta for use in inherited sterility programmes
- Author
-
Mariana M. Viscarret, Cynthia L. Cagnotti, Silvia N. López, Diego Fernando Segura, María B. Riquelme, Leonela Z. Carabajal, and Eduardo N. Botto
- Subjects
Larva ,Veterinary medicine ,Sterility ,media_common.quotation_subject ,Longevity ,Fertility ,Biology ,Fecundity ,biology.organism_classification ,Botany ,Tuta absoluta ,PEST analysis ,Agronomy and Crop Science ,Sex ratio ,media_common - Abstract
Tuta absoluta is a key pest of tomato crops originating from South America. The consequences of X-radiation on this species were studied under laboratory controlled conditions. The effect of radiation on adult emergence was evaluated exposing male and female pupae to increasing X-rays. Adult emergence decreased as doses of X-radiation increased, with the appearance of deformities such as malformed wings and bent legs at doses ≥350 Gy. Besides, males and females obtained from irradiated pupae were out crossed with untreated counterparts to explore the effects of X-radiation on inherited sterility. (a) Irradiated male × untreated female crosses. Both fecundity and fertility of the untreated females were reduced by radiation, and the effect was stronger as the doses increased. Neither the longevity of parental males and F1 adults nor the sex ratios of the F1 and F2 generations were affected by X-radiation (F1 and F2: first and second generation of descendants of irradiated adults). Inherited sterility effects were manifested by a significant reduction in the F1 fecundity, F1 fertility, and the amount of larvae and pupae produced. Doses of 200–250 Gy could be used to induce inherited sterility in T. absoluta males. (b) Untreated male × irradiated female crosses. The minimum dose at which irradiated females were completely sterile was 200 Gy. The present study is the first study in T. absoluta that provides the starting point for implementing the inherited sterility in this species.
- Published
- 2012
23. Bactériémie à streptocoque du groupe G dans le post-partum. À propos d’un cas
- Author
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I. Worcel, J.-N. Botto, and C. Verdonk
- Subjects
Gynecology ,Female circumcision ,Episiotomy ,medicine.medical_specialty ,Vaginal delivery ,Streptococcus ,business.industry ,medicine.medical_treatment ,Incidence (epidemiology) ,Obstetrics and Gynecology ,General Medicine ,Bacteriologic aspects ,medicine.disease ,medicine.disease_cause ,Reproductive Medicine ,Bacteremia ,Blood circulation ,medicine ,business - Abstract
Bacteremia with streptococcus group G is a rare infection, particularly in the post-partum, but of which the incidence has been increasing since the end of the 20th century. The objective of our work is to report the clinical and the bacteriologic aspects, as well as the therapeutic modalities of an exceptional case of bacteremia with streptococcus group G, after a normal vaginal delivery, in a 26-year-old woman. Streptococcus group G being a part of the normal flora of the female genital tract, the endogenous contamination probably took place by passage in the blood circulation during the episiotomy.
- Published
- 2014
24. Estudios biológicos de Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae), parasitoide de huevos de Tuta absoluta Meyrick (Lepidoptera: Gelechiidae)
- Author
-
Eduardo N. Botto and María B Riquelme Virgala
- Subjects
education.field_of_study ,biology ,fungi ,Population ,food and beverages ,biology.organism_classification ,Fecundity ,Gelechiidae ,Parasitoid ,Toxicology ,medicine.drug_formulation_ingredient ,Trichogrammatidae ,Sitotroga cerealella ,Insect Science ,Botany ,medicine ,Tuta absoluta ,PEST analysis ,education - Abstract
The tomato moth, Tuta absoluta Meyrick, is one of the most important tomato pests in South America. In Argentina, management strategies include only chemical control. In this work, the parasitoid wasp Trichogrammatoidea bactrae Nagaraja was evaluated as a potential natural enemy against this pest. Biological and population parameters were estimated by developing a life table under laboratory conditions at 25 ± 1oC, 14:10 photoperiod and 60 ± 10% RH. Three cohorts of 26-30 T. bactrae females each were placed with one of the three following treatments: 1 - Sitotroga cerealella (Olivier) eggs on a piece of cardboard; 2 - S. cerealella eggs on a piece of tomato leaf, and 3- T. absoluta eggs on a piece on tomato leaf. The following parameters were estimated for each cohort: survival (egg to adult), longevity, fecundity and oviposition period of females, sex proportion of the F1, net rate of reproduction (Ro), mean generation time (T) and intrinsic rate of population increase (rm). Survival of the T. bactrae immatures was higher than 90% on both, S. cerealella and T. absoluta eggs. The female survival curves corresponded to type III and showed no significant differences among treatments. The three cohorts did not show significant differences between sex ratio, female longevity, oviposition period, fecundity and the population parameters studied. These results indicate that T. bactrae would be a potential biological control agent of T. absoluta.
- Published
- 2010
25. Effect of cold storage on some biological parameters of Eretmocerus corni and Encarsia formosa (Hymenoptera: Aphelinidae)
- Author
-
Silvia N. López and Eduardo N. Botto
- Subjects
biology ,fungi ,Cold storage ,Trialeurodes ,biology.organism_classification ,Fecundity ,Parasitoid ,Pupa ,Horticulture ,Aphelinidae ,Insect Science ,Botany ,Agronomy and Crop Science ,Sex ratio ,Encarsia formosa - Abstract
Eretmocerus corni and Encarsia formosa are considered important natural enemies to be used as biological control agents against Trialeurodes vaporariorum in Argentina. The effect of cold storage on some biological parameters of the pupal and adult stages of these parasitoids and their progeny is studied. Parasitoid pupae were stored 7, 14, 21, and 28 days at 4.5 ± 2 and 11.5 ± 2 °C, RH = 60–75% in full darkness. For Er. corni , pupal survival was negatively affected when the storage was longer than 7 days at either temperature. Adult emergence time after cold storage was shorter at 11.5 °C and decreased significantly with the time of storage. Adult survival 3 days after emergence, sex ratio, first day fecundity, pupal survival of the F1 progeny, and proportion of F1 females were not affected by cold storage. For En. formosa , storage at 11.5 °C did not affect pupal survival, irrespective of the storage time, but at 4.5 °C the proportion of emerged adults decreased significantly. Adult emergence time was shorter at 11.5 °C and this reduction increased significantly with the duration of the storage period. Adult survival 3 days after emergence did not vary among cold treatments. First day fecundity of En. formosa was negatively affected by storage longer than 14 days at either temperature. Cold storage of pupae had no effect on pupal survival of their F1 progeny. Our results suggest that pupae can be kept at 11.5 °C for up to 14 days or at 4.5 °C for up to 7 days to maintain these parasitoids in suitable condition for release.
- Published
- 2005
26. Biological studies on two neotropical egg parasitoid species:Trichogramma nerudaiandTrichogrammasp. (Hymenoptera: Trichogrammatidae)
- Author
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Marcos Gerding, Paula Klasmer, Cecilia Horny, and Eduardo N. Botto
- Subjects
Tortricidae ,Codling moth ,Biology ,biology.organism_classification ,Fecundity ,Parasitoid ,Lepidoptera genitalia ,Horticulture ,Trichogrammatidae ,Insect Science ,Botany ,Rhyacionia buoliana ,Agronomy and Crop Science ,Trichogramma - Abstract
The main biological attributes of two Neotropical egg parasitoids, the arrhenotokous Trichogramma nerudai and the thelytokous Trichogramma sp., were assessed under controlled laboratory conditions. Developmental time from egg to adult, and parasitoid survival, fecundity and fertility were studied using life tables. Results showed that T. nerudai had a faster developmental time than Trichogramma sp. (13.014±0.4019 and 13.595±0.4931 days, respectively). Both species showed similar life table statistics, r m was 0.222 and 0.225 for T. nerudai and Trichogramma sp., respectively. Parasitoid survival averaged 95% for both species. The results obtained are discussed in the context of selecting one of these natural enemies as a potential biological control agent for the European pine shoot moth Rhyacionia buoliana (Lepidoptera: Tortricidae) in pine forests and the codling moth Cydia pomonella (Lepidoptera: Tortricidae) in apple orchards in Argentina.
- Published
- 2004
27. Effect of cold storage on the quality of Trichogramma nerudai (Hymenoptera: Trichogrammatidae)
- Author
-
Andrea Alejandra Tezze and Eduardo N. Botto
- Subjects
biology ,Cold storage ,Plutella ,Hymenoptera ,biology.organism_classification ,Parasitoid ,Pupa ,Horticulture ,Trichogrammatidae ,Insect Science ,Botany ,Tuta absoluta ,Rhyacionia buoliana ,Agronomy and Crop Science - Abstract
The recently discovered species Trichogramma nerudai Pintureau and Gerding (Hymenoptera: Trichogrammatidae) could be useful in biological control programs of forest and agricultural insect pests ( Rhyacionia buoliana Denis and Schiffermuller, Tuta absoluta Meyrick, Plutella xylostella Linnaeus, Cydia pomonella Linnaeus). The possibility of storing T. nerudai at low temperatures and the effects of such storage on the quality of the parasitoid and its progeny were studied. T. nerudai pupae were stored 25, 50, 75, 100, 125, and 150 days at 4 ± 1 °C in a refrigerator, RH=75 ± 5% and in full darkness. T. nerudai pupae were tolerant to cold storage. The numbers of emerged adults, the proportions of deformed adults and the mobility capacity of T. nerudai were greatly affected from 50 days of cold storage onwards. The single quality traits were combined to show the added effect of low emergence, deformation of emerging individuals, and loss of mobility of the non-deformed individuals. The usefulness to cold store T. nerudai pupae up to 50 days is discussed.
- Published
- 2004
28. Evidence for association of a common variant of the endothelial nitric oxide synthase gene (Glu298->Asp polymorphism) to the presence, extent, and severity of coronary artery disease
- Author
-
M G Colombo, Serena Masetti, G Rossi, Aldo Clerico, N Botto, Maria Grazia Andreassi, Samantha Manfredi, Andrea Biagini, and Umberto Paradossi
- Subjects
Male ,medicine.medical_specialty ,Genotype ,Nitric Oxide Synthase Type III ,Endothelium ,Coronary Artery Disease ,Cardiovascular Medicine ,Coronary artery disease ,Gene Frequency ,Risk Factors ,Polymorphism (computer science) ,Enos ,Internal medicine ,medicine ,Humans ,Allele frequency ,Polymorphism, Genetic ,biology ,business.industry ,Homozygote ,Exons ,Odds ratio ,Middle Aged ,biology.organism_classification ,medicine.disease ,Pedigree ,Surgery ,Nitric oxide synthase ,Endocrinology ,medicine.anatomical_structure ,biology.protein ,Female ,Nitric Oxide Synthase ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background: Genetic variants of endothelial nitric oxide synthase (eNOS) could influence individual susceptibility to coronary artery disease. Objective: To assess whether Glu298→Asp polymorphism of the eNOS gene is associated with the occurrence and severity of angiographically defined coronary artery disease in the Italian population. Methods: Polymerase chain reaction/restriction fragment length polymorphism analysis was done to detect the Glu298→Asp variant of the eNOS gene in 201 patients with coronary artery disease and 114 controls. The severity of coronary artery disease was expressed by the number of affected vessels and by the Duke scoring system. Results: The frequencies of the eNOS Glu/Glu, Glu/Asp, and Asp/Asp genotypes in the coronary artery disease group were significantly different from those of controls (45.3%, 38.8%, and 15.9% v 42.1%, 51.8%, and 6.1%, respectively; χ2 = 8.589, p = 0.0136). In comparison with subjects who had a Glu298 allele in the eNOS gene, the risk of coronary artery disease was increased among Asp/Asp carriers (odds ratio 2.9, 95% confidence interval 1.2 to 6.8, p = 0.01) and was independent of the other common risk factors (p = 0.04). There was a significant association between the eNOS Glu298→Asp variant and both the number of stenosed vessels (mean (SEM), 2.3 (0.1) for Asp/Asp v 1.9 (0.1) and 1.8 (0.1) for Glu/Glu and Glu/Asp, respectively; p = 0.01) and the Duke score (56.1 (3.1) for Asp/Asp v 46.7 (2.0) and 46.1 (1.9) for Glu/Glu and Glu/Asp, respectively; p = 0.02). Conclusions: Glu298→Asp polymorphism of the eNOS gene appears to be associated with the presence, extent, and severity of angiographically assessed coronary artery disease.
- Published
- 2002
29. Aislamiento de Conidiobolus coronatus a partir de una plaga de áfidos del cebollín (Allium schoenoprasum L.)
- Author
-
Andrea V. Andorno, Ricardo Mario Comerio, and Eduardo N. Botto
- Subjects
Aphid ,biology ,Neotoxoptera formosana ,business.industry ,Biological pest control ,Conidiobolus coronatus ,Pest control ,food and beverages ,biochemical phenomena, metabolism, and nutrition ,biology.organism_classification ,Microbiology ,Infectious Diseases ,Botany ,Allium ,Entomophthorales ,Conidiobolus ,business - Abstract
Conidiobolus coronatus (Entomophthorales), a pathogen of human and some insects, was isolated from dead specimens of the aphid Neotoxoptera formosana present on chives leaves. C. coronatus infected aphids could pose a threat to growers health. Pest control strategies of N. formosana may also contribute to reduce the human infection risk by C. coronatus.
- Published
- 2008
30. Biology of a South American Population ofEretmocerussp. (Hymenoptera: Aphelinidae) Attacking the Greenhouse Whitefly
- Author
-
Silvia N. López and Eduardo N. Botto
- Subjects
photoperiodism ,Rate of natural increase ,media_common.quotation_subject ,Biological pest control ,Longevity ,Greenhouse whitefly ,Biology ,biology.organism_classification ,Parasitoid ,Animal science ,Aphelinidae ,Insect Science ,Botany ,Agronomy and Crop Science ,Encarsia formosa ,media_common - Abstract
Eretmocerussp. was found parasitizing the greenhouse whiteflyTrialeurodes vaporariorumon tomatoes in Argentina. The objective of the present paper is to make a contribution to the knowledge of some biological parameters ofEretmocerussp. and to evaluate its potential as an agent for biological control. Preimaginal developmental time was estimated simultaneously with that ofEncarsia formosa,another aphelinid parasitoid ofT. vaporariorum,at two different temperatures: 26 ± 1°C and 29 ± 1°C (relative humidity (RH): 50–75%, photoperiod: 14L:10D). The following biological parameters ofEretmocerussp. were also analyzed: longevity, survival rate (lx) and age-specific fertility (mx) of the adult, sex rate, intrinsic rate of natural increase (rm), net reproductive rate (R0), and generational time (Tc). For this purpose a life table was constructed for the parasitoid at 26 ± 1°C, RH: 50–80%, and photoperiod: 14L:10D. Results were as follows:Eretmocerussp. had a longer developmental time at 26 ± 1°C (19.8 days) than at 29 ± 1°C (19.3 days) (ANOVA,P < 0.05). This time was also longer than that ofE. formosaat both temperatures (ANOVA,P < 0.05). The life table showed mean longevity of the adult: 12.8 days (female) and 7.0 days (male);lx50(adults): 12–13 days; mean sex rate: 0.57 (females/(females + males));rm: 0.195 females/female/day;R0: 100.8 females/female;Tc: 23.7 days. Results suggest thatEretmocerussp. could be used in addition toE. formosain the control of the greenhouse whitefly.
- Published
- 1997
31. Electron Microprobe Analysis of Minerals
- Author
-
N. Botto, S. Roeske, and P. Schiffman
- Subjects
Conventional transmission electron microscope ,Microprobe ,Optics ,Electron tomography ,business.industry ,Scanning electron microscope ,Chemistry ,Scanning confocal electron microscopy ,Physics::Accelerator Physics ,Energy filtered transmission electron microscopy ,Electron microprobe ,business ,Environmental scanning electron microscope - Abstract
THE ELECTRON microprobe analyzer (EMA) is an electron optical instrument that combines the imaging capabilities of light and electron microscopes with the analytical capabilities of X-ray spectrometers. With the electron beam rastered across the sample surface, the EMA can be used like a low-resolution scanning electron microscope, particularly to acquire backscattered electron images. With the electron beam focused to a small area on the sample surface, characteristic X-rays are generated for qualitative or quantitative analysis at micrometer-scale spatial resolution. Electron microprobe analysis is a routinely used, nondestructive technique for characterizing the compositions and compositional variations of minerals as well as other fine-grained materials.
- Published
- 2013
32. [Group G streptococcal bacteremia in the post-partum period. A case report]
- Author
-
C, Verdonk, J-N, Botto, and I, Worcel
- Subjects
Adult ,Treatment Outcome ,Episiotomy ,Streptococcal Infections ,Ceftriaxone ,Postpartum Period ,Humans ,Streptococcus ,Bacteremia ,Drug Therapy, Combination ,Female ,Gentamicins ,Anti-Bacterial Agents - Abstract
Bacteremia with streptococcus group G is a rare infection, particularly in the post-partum, but of which the incidence has been increasing since the end of the 20th century. The objective of our work is to report the clinical and the bacteriologic aspects, as well as the therapeutic modalities of an exceptional case of bacteremia with streptococcus group G, after a normal vaginal delivery, in a 26-year-old woman. Streptococcus group G being a part of the normal flora of the female genital tract, the endogenous contamination probably took place by passage in the blood circulation during the episiotomy.
- Published
- 2012
33. The Ecology and Biological Control of the Woodwasp Sirex noctilio in Patagonia, Argentina
- Author
-
Eduardo N. Botto and Paula Klasmer
- Subjects
Forest pest ,Geography ,biology ,Sirex noctilio ,Ecology ,Ecology (disciplines) ,Sirex ,Biological pest control ,Early detection ,Ibalia leucospoides ,biology.organism_classification ,Parasitoid - Abstract
The woodwasp Sirex noctilio has become the most important forest pest affecting pine plantations in Argentina. Sirex was first detected in the northeastern provinces in 1985, and it has spread from there throughout most of the commercial pine plantations of the country causing great losses and tree mortality. In 1993, S. noctilio and its parasitoid Ibalia leucospoides became established in the Western Andean Patagonia, near the city of San Carlos de Bariloche (Patagonia, Argentina). A management program that includes trap trees for early detection, thinning and biological control with the parasitic nematode Deladenus (=Beddingia) siricidicola and the entomophagous parasitoid I. leucospoides has since been developed. An overview of the research carried out to date regarding Sirex management in Patagonia is presented and discussed.
- Published
- 2011
34. [Biological studies on Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae), egg parasitoid of Tuta absoluta Meyrick (Lepidoptera: Gelechiidae)]
- Author
-
María B Riquelme, Virgala and Eduardo N, Botto
- Subjects
Lepidoptera ,Animals ,Female ,Pest Control, Biological ,Hymenoptera ,Ovum - Abstract
The tomato moth, Tuta absoluta Meyrick, is one of the most important tomato pests in South America. In Argentina, management strategies include only chemical control. In this work, the parasitoid wasp Trichogrammatoidea bactrae Nagaraja was evaluated as a potential natural enemy against this pest. Biological and population parameters were estimated by developing a life table under laboratory conditions at 25 ± 1ºC, 14:10 photoperiod and 60 ± 10% RH. Three cohorts of 26-30 T. bactrae females each were placed with one of the three following treatments: 1 - Sitotroga cerealella (Olivier) eggs on a piece of cardboard; 2 - S. cerealella eggs on a piece of tomato leaf, and 3- T. absoluta eggs on a piece on tomato leaf. The following parameters were estimated for each cohort: survival (egg to adult), longevity, fecundity and oviposition period of females, sex proportion of the F1, net rate of reproduction (Ro), mean generation time (T) and intrinsic rate of population increase (r m). Survival of the T. bactrae immatures was higher than 90% on both, S. cerealella and T. absoluta eggs. The female survival curves corresponded to type III and showed no significant differences among treatments. The three cohorts did not show significant differences between sex ratio, female longevity, oviposition period, fecundity and the population parameters studied. These results indicate that T. bactrae would be a potential biological control agent of T. absoluta.
- Published
- 2009
35. SFCE P-16 - Préservation chirurgicale de la fertilité avant greffe de cellules souches hématopoïétiques (CSH)
- Author
-
Catherine Poirot, Mony Fahd, C. Mallebranche, S. Malbezin, André Baruchel, Annabel Paye-Jaouen, J.-H. Dalle, N. Botto, N. Edy, and F. Corroyez
- Subjects
Pediatrics, Perinatology and Child Health - Abstract
Les conditionnements precedant les greffes de CSH sont susceptibles d’entrainer une sterilite. La loi de bioethique statue que « toute personne peut beneficier du recueil et de la conservation de ses gametes ou tissu germinal lorsqu’une prise en charge medicale est susceptible d’alterer sa fertilite ». La cryoconservation de tissu gonadique bien qu’experimentale est la seule option disponible pour les enfants non puberes. Nous rapportons notre activite, de 2006 (ovariectomie) et 2011 (prelevement de pulpe testiculaire) a fin 2013. Notre proposons cette technique a tout patient eligible. Les parents et l’enfant recoivent une information en hematologie, en consultation d’AMP, en anesthesie et en chirurgie et doivent signer un consentement. 54% des patientes et 65% des patients adresses a la consultation specialisee ont accepte le prelevement. 90 interventions (43F, 47G ; 82% d’hemopathies malignes) ont ete realises pour 376 greffes. L’âge median au prelevement etait : filles : 6.8 ans (0.6–15.6) et garcons : 7.3 ans (0.9–16), avec un delai median de 20 j (11–98) entre le prelevement et la greffe. Aucune complication postoperatoire n’a ete observee. Conclusion Cette technique est bien acceptee et bien toleree par les patients et represente un espoir vraisemblable pour leur vie d’adultes.
- Published
- 2014
36. SFCP CO-45 - Néphrectomie partielle par rétropéritonéoscopie; peut-on reconsidérer sa mauvaise réputation ?
- Author
-
R. Matta, N. Botto, Annabel Paye-Jaouen, H. Badawy, Elisabeth Carricaburu, H. Al-Hazmi, and A. Elghoneimi
- Subjects
Pediatrics, Perinatology and Child Health - Abstract
Objectif La nephrectomie partielle laparoscopique (NPL) reste controversee chez les jeunes enfants en raison de taux eleve des complications et de conversion. Methodes Etude retrospective mono centrique entre 1997–2013. La technique a ete progressivement standardisee:1) position laterale, approche retroperitoneale 2) insertion retrograde de catheter ureteral dans le pole restant, injection de bleu de methylene au cours de la section du parenchyme 3) le pole restant est garde attache au peritoine. L’evaluation est effectuee par echographie Doppler renale +/_ scintigraphie au DMSA. Resultats 58 NPL (43 superieurs) ont ete effectuees a un âge median de 15mois [1–156], duree operatoire 140min [75–270], duree d’hospitalisation 2 jrs, suivi 23mois [6–109]. Une seule conversion (1,7%) (4 mois, 6eme cas). Un seul enfant (1,7%) a eu une perte du pole inferieure restant, (7 ans, 4eme cas). Deux enfants ont eu urinome dont un necessitant un drainage. 25 enfants ont ete operes a un âge Conclusions NPL reste une intervention a risque. Une technique standardisee et maitrisee peut reduire le taux des complications et de conversion. Le principal facteur limitant est la courbe d’apprentissage du chirurgien par rapport a l’âge du patient.
- Published
- 2014
37. SFCP CO-36 - Dérivation urinaire continente extra-séreuse associée à une entérocystoplastie selon Ghoneim
- Author
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G. Christine, W.T. Tapsoba, A. El Ghoneimi, Annabel Paye-Jaouen, and N. Botto
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Pediatrics, Perinatology and Child Health - Abstract
Objectif La technique de derivation urinaire continente extra-sereuse decrite par Ghoneim et Abu Elenein est une procedure reconnue pour obtenir un reservoir continent catheterisable. Nous avons evalue cette technique chez l’enfant. Methode Etude retrospective monocentrique (2002–013) des patients operes d’une Ileocystoplastie configuree en W associee a une reimplantation de l’appendice, +/- les ureteres, dans un trajet antireflux extra-sereux. Resultats 27 enfants ; 16 garcons, 11 filles, âge moyen 9 ans (1–15) ont ete inclus (16 extrophies vesicales, 2 extrophies cloacales, 5 vessies neurologiques et 4 autres). Ileocystoplastie (25), reservoir ileal (2), derivation par l’appendice (24), tube ileal (2). Avec un suivi moyen de 30 mois (6–133), 26 patients (96%) ont obtenu une continence, avec 3 a 5 catheterismes par jour. 3 patients (11%) ont eu des complications de la derivation: 2 fuites (un traite par Deflux et un repris chirurgicalement) et 1 stenose (dilatation). Lithiases dans le reservoir (2) et une acidose metabolique post-operatoire chez deux enfants. Conclusion Cette technique de derivation urinaire est efficace pour obtenir un agrandissement fiable avec une derivation continente. Comparativement a d’autres techniques, le taux de complication est relativement faible.
- Published
- 2014
38. [Study of amniotic fluid bacterial colonization sampled by amniocentesis in cases with premature rupture of membranes. Prospective multicenter study]
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J C, Berardi, J C, Colau, P, Engelmann, J N, Botto, P, Vige, and B, Robichez
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Fetal Membranes, Premature Rupture ,C-Reactive Protein ,Pregnancy ,Amniocentesis ,Tocolysis ,Humans ,Female ,Prospective Studies ,Amniotic Fluid ,Anti-Bacterial Agents - Abstract
To determine the relationship between bacterial colonization of the amniotic fluid sampled by amniocentesis and premature rupture of the membranes.A prospective multicentric study conducted over a one year period in 6 maternity wards in the suburban area of Paris. Thirty-six women with premature rupture of the membranes were studied.There were 11 patients (30%) with contaminated fluid at the first amniocentesis. Twenty-five patients had sterile fluid. In 7 patients with prolonged rupture for more than one week, repeated amniocentesis. Twenty-five patients had sterile fluid. In 7 patients with prolonged rupture for more than one week, repeated amniocenteses were used to follow bacterial colonization. In one patient, Proteus mirabilis in the amniotic fluid was eradicated by adapted antibiotic therapy. In patients with sterile amniotic fluid, there was no secondary colonization. In the 11 cases with colonized liquid, the vaginal swab could only be considered as positive in 4 cases. Amniocentesis was able to discover 7 bacterial colonizations of the amniotic fluid in patients with an indeterminant vaginal swab. Likewise, C-reactive protein levels were raised only in 26% of the cases with a colonized amniotic fluid.
- Published
- 1995
39. GENETIC POLYMORPHISMS IN DNA REPAIR GENES: A NEW POSSIBLE RISK FACTOR FOR CORONARY ARTERY DISEASE?
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T. Vene, C. Federici, M.G. Andreassi, G. Trianni, N. Botto, Alessio Naccarati, C. Palmieri, Pavel Vodicka, and Barbara Pardini
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Coronary artery disease ,DNA repair ,business.industry ,Internal Medicine ,Medicine ,General Medicine ,Risk factor ,Cardiology and Cardiovascular Medicine ,business ,medicine.disease ,Bioinformatics - Published
- 2008
40. PLASMA CLASTOGENIC FACTORS IN PATIENTS WITH ACUTE CORONARY SYNDROME
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C. Palmieri, N. Botto, Samantha Manfredi, M.G. Andreassi, G. Trianni, I. Foffa, and C. Federici
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Clastogen ,medicine.medical_specialty ,Acute coronary syndrome ,business.industry ,Internal medicine ,Internal Medicine ,Cardiology ,medicine ,In patient ,General Medicine ,Cardiology and Cardiovascular Medicine ,business ,medicine.disease - Published
- 2008
41. PO5-153 MITOCHONDRIAL DNA 4977-BP DELETION AND RESPIRATORY CHAIN DYSFUNCTION IN HUMAN ATRIAL TISSUE ARE ASSOCIATED WITH CORONARY ARTERY DISEASE
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G.D. Angelini, V. Lucchetti, I. Bellino, C. Federici, N. Botto, E. Picano, and M.G. Andreassi
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Mitochondrial DNA ,medicine.medical_specialty ,business.industry ,General Medicine ,Atrial tissue ,Respiratory chain dysfunction ,medicine.disease ,Coronary artery disease ,Internal medicine ,Internal Medicine ,Cardiology ,medicine ,Cardiology and Cardiovascular Medicine ,business - Published
- 2007
42. PO5-156 INCREASED CHROMOSOMAL DNA DAMAGE IS PREDICTOR OF FUTURE ADVERSE CARDIAC EVENTS IN PATIENTS WITH CHRONIC CORONARY ARTERY DISEASE
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I. Foffa, Samantha Manfredi, C. Federici, M.G. Andreassi, and N. Botto
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Coronary artery disease ,medicine.medical_specialty ,business.industry ,Internal medicine ,Internal Medicine ,medicine ,Cardiology ,Chromosomal dna ,In patient ,General Medicine ,Cardiology and Cardiovascular Medicine ,medicine.disease ,business - Published
- 2007
43. Cumulative patient effective dose in cardiology.
- Author
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Bedetti, G., N. Botto, Andreassi, M. G., Traino, C., Vano, E., and Picano, E.
- Subjects
- *
X-rays , *PATIENTS , *RADIATION , *NUCLEAR medicine , *CARDIOLOGY - Abstract
Medical radiation from X-rays and nuclear medicine is the largest non-natural (man-made) source of radiation exposure in Western countries. The aim of this study was to assess the individual cumulative effective dose in patients admitted to our cardiology ward. We collected a cumulative radiological history from a structured questionnaire and access to hospital records in 50 consecutive adult patients (36 males; age, 66.7±10.8 years) admitted to the Institute of Clinical Physiology in Pisa. The cumulative effective dose was assessed as an indicator of stochastic risk of cancer. We derived the effective dose for each individual examination from the Medical Imaging Guidelines of the European Commission (2001). On average, each patient underwent a median of 36 examinations (interquartile range, 23-46). The median cumulative effective dose was 60.6 mSv. Three types of procedures were responsible for ∼86% of the total collective effective dose: (i) arteriography and interventional cardiology (12% of examinations, 48% of average dose per patient); (ii) nuclear medicine (5% of examinations, 21% of average dose per patient); and (iii) CT (4% of examinations, 17% of average dose per patient). The median estimated extra risk of cancer was approximately 1 in 200 exposed subjects. In conclusion, the average contemporary cardiological patient is exposed to a significant cumulative effective dose from diagnostic and therapeutic interventions. It is important to log cumulative dose for each patient at the time of each examination. Every effort should be made to justify the indications and to optimize the doses. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
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44. Asociaciones áfido-parasitoide (Hemiptera: Aphididae; Hymenoptera: Braconidae, Aphidiinae) en cultivos hortícolas orgánicos en Los Cardales, Buenos Aires, Argentina.
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V. Andorno, Andrea, N. López, Silvia, and N. Botto, Eduardo
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APHIDIIDAE ,MYZUS ,GREEN peach aphid ,AGRICULTURE - Abstract
Copyright of Revista de la Sociedad Entomológica Argentina is the property of Sociedad Entomologica Argentina and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2007
45. Vesico-ureteral reflux diagnosis after initial kidney abscess: Results from a Paediatric Tertiary Hospital.
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Preka E, Miller N, Avramescu M, Berteloot L, Vinit N, Botto N, Grapin M, Prévot M, Boistault M, Garcelon N, Taghavi K, Schrimpf C, Cohen JF, Blanc T, and Boyer O
- Subjects
- Humans, Retrospective Studies, Female, Male, Infant, Child, Preschool, Child, Kidney Diseases diagnosis, Hospitals, Pediatric, Cystography, Vesico-Ureteral Reflux complications, Tertiary Care Centers, Abscess diagnosis
- Abstract
Aims: Guidelines regarding voiding cystourethrogram (VCUG) indications following a paediatric kidney abscess are lacking. This study evaluates vesicoureteral reflux (VUR) prevalence and outcome after a first kidney abscess., Methods: This retrospective study included all children presenting to a tertiary paediatric reference centre with de-novo kidney abscesses from 2011 to 2022, diagnosed through imaging (ultrasonography or computed tomography). VCUG's clinical utility was assessed by exploring outcomes related to interventions., Results: Among the 17 patients (median age 9 months, IQR; 6 months-6 years), VCUG identified VUR in 7 (41%; 95% CI: 18-65%), including two with grade IV-V. Median abscess size was 19 mm (IQR; 14-27). 7/8 (88%) children with DMSA scan presented scars, including 4 with hypofunctioning (20%-44%), and one with a non-functioning kidney. Scarring on the DMSA scan was similar regardless of identified VUR. Six children had subsequent pyelonephritis. Three of the remaining 11 had grade I-III and two IV-V VUR. Surgery was required in four children overall: three for recurrent pyelonephritis and one for high-grade VUR and scars., Conclusion: Among initial kidney abscess cases, 41% had VUR, similar to children experiencing their first uncomplicated pyelonephritis. VCUG results guided antibiotic prophylaxis but not surgical decisions. We suggest considering VCUG following recurrent pyelonephritis/kidney abscess and/or kidney scarring., (© 2024 The Author(s). Acta Paediatrica published by John Wiley & Sons Ltd on behalf of Foundation Acta Paediatrica.)
- Published
- 2024
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46. Asymmetrical primary vesicoureteral reflux: Which is the best surgical strategy?
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Montanaro B, Botto N, Broch A, Vinit N, Blanc T, and Lottmann H
- Abstract
Introduction: No report has been published regarding the recommended surgical treatment in patients presenting with symptomatic primary asymmetrical vesicoureteral reflux (VUR): high grade on one side and low grade on the contralateral side. The aim of this study was to evaluate the effectiveness and outcome of combined Lich-Gregoir extravesical reimplantation and subureteric Deflux® injection, of high grade and low grade VUR respectively. Non-inferiority to bilateral cross-trigonal reimplantation was investigated in terms of surgical complications, number of post-operative fUTIs and need for re-intervention., Patients and Methods: A monocentric retrospective study was undertaken of all consecutive children with primary asymmetrical VUR on MCUG treated over an 18-year period (2004-2022). Surgery was indicated following an episode of febrile urinary tract infection despite appropriate non-operative management. Demographic and clinical such as length of hospital stay for pain management, use of urinary Foley catheter and complications were analyzed., Results: A total of 80 children met the study criteria: 40 patients underwent bilateral cross-trigonal re-implantation (Group 1) and 40 patients the combined Lich-Gregoir extra vesical reimplantation and Deflux® sub ureteric injection (Group 2). Complication and success rates were comparable in the two groups. The median hospital stay was significantly shorter for Group 2, with 50 % of patients who were discharged on day 1. Moreover, the data showed a significant lesser need in number and length of bladder catheter and ureteral stents in Group 2., Discussion: The technique proposed overcome the inconveniences of the other procedures that are commonly used in bilateral RVU: difficulty in retrograde catheterization or ureteroscopy after bilateral cross-trigonal reimplantation, the risk of transient bladder dysfunction after bilateral extravesical reimplantation and the low rate of success for high grade reflux of the sub ureteric Deflux® injection. The main limitation of the study lies in its retrospective nature and in the relatively short median follow-up., Conclusion: The combined Lich-Gregoir extra-vesical ureteral reimplantation and sub-ureteric Deflux® injection for the treatment of primary asymmetrical VUR is an effective alternative to the gold standard cross-trigonal ureteral reimplantation. Moreover, the position of the ureteric orifice is not modified in the eventuality of endourological procedures into adulthood., Competing Interests: Conflict of interest None., (Copyright © 2024 Journal of Pediatric Urology Company. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2024
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47. Whole-exome sequencing to identify causative variants in juvenile sudden cardiac death.
- Author
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Modena M, Giannoni A, Aimo A, Aretini P, Botto N, Vittorini S, Scatena A, Bonuccelli D, Di Paolo M, and Emdin M
- Subjects
- Humans, Male, Female, Adolescent, Adult, Child, Young Adult, Autopsy, Middle Aged, Exome genetics, Child, Preschool, Infant, Death, Sudden, Cardiac pathology, Death, Sudden, Cardiac etiology, Exome Sequencing, Genetic Predisposition to Disease, Genetic Testing methods
- Abstract
Background: Juvenile sudden cardiac death (SCD) remains unexplained in approximately 40% of cases, leading to a significant emotional burden for the victims' families and society. Comprehensive investigations are essential to uncover its elusive causes and enable cascade family screening. This study aimed to enhance the identification of likely causative variants in juvenile SCD cases (age ≤ 50 years), particularly when autopsy findings are inconclusive., Results: Autopsy revealed diagnostic structural abnormalities in 46%, non-diagnostic findings in 23%, and structurally normal hearts in 31% of cases. Whole-exome sequencing (WES), refined through a customized virtual gene panel was used to identify variants. These variants were then evaluated using a multidisciplinary approach and a structured variant prioritization scheme. Our extended approach identified likely causative variants in 69% of cases, outperforming the diagnostic yields of both the cardio panel and standard susceptibility gene analysis (50% and 16%, respectively). The extended cardio panel achieved an 80% diagnostic yield in cases with structurally normal hearts, demonstrating its efficacy in challenging scenarios. Notably, half of the positive cases harboured a single variant, while the remainder had two or more variants., Conclusion: This study highlights the efficacy of a multidisciplinary approach employing WES and a tailored virtual gene panel to elucidate the aetiology of juvenile SCD. The findings support the expansion of genetic testing using tailored gene panels and prioritization schemes as part of routine autopsy evaluations to improve the identification of causative variants and potentially facilitate early diagnosis in first-degree relatives., (© 2024. The Author(s).)
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- 2024
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48. Occupational Contact Dermatitis in Construction Workers: A Retrospective Analysis of the North American Contact Dermatitis Group Data, 2001-2020.
- Author
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Reeder MJ, Idrogo-Lam A, Aravamuthan SR, Warshaw EM, DeKoven JG, Silverberg JI, Adler BL, Atwater AR, Taylor JS, Houle MC, Belsito DV, Yu J, Botto N, Mowad CM, Dunnick CA, DeLeo VA, and Pratt MD
- Subjects
- Humans, Retrospective Studies, Male, Cross-Sectional Studies, Female, Adult, Middle Aged, United States epidemiology, Canada epidemiology, Prevalence, Occupational Exposure adverse effects, Dermatitis, Occupational etiology, Dermatitis, Occupational epidemiology, Dermatitis, Occupational diagnosis, Patch Tests, Construction Industry, Dermatitis, Allergic Contact epidemiology, Dermatitis, Allergic Contact etiology, Dermatitis, Allergic Contact diagnosis, Allergens adverse effects, Allergens analysis
- Abstract
Background: Construction workers (CWs) are at risk for occupational contact dermatitis (CD) owing to workplace exposures. Objective: Determine the prevalence of occupational allergic CD and characterize common occupational allergens in CWs referred for patch testing in the United States and Canada. Methods: Retrospective cross-sectional analysis of patients patch tested by the North American Contact Dermatitis Group from 2001 to 2020. Results: Of 47,843 patch-tested patients, 681 (1.4%) were CWs. Compared with non-CWs, CWs were more likely to be male (91.0% vs 30.9%) have occupational skin disease (36.9% vs 11.4%) and have hand involvement (37.2% vs 22.5%) (all P < 0.0001). Of 681 CWs, 60.1% (411) had clinically relevant positive patch test reactions, and nearly 1/3 of CWs (128) had occupationally relevant reactions. Most common occupationally relevant allergens were potassium dichromate 0.25% pet. (30.5%, 39/128), bisphenol A epoxy resin 1% pet. (28.1%, 36/128), carba mix 3% pet. (14.8%, 19/128), cobalt (ii) chloride hexahydrate 1% pet. (14.1%, 18/128), and thiuram mix 1% pet. (14.1%, 18/128). Top sources of occupationally relevant allergens were cement/concrete/mortar (20.4%, 46/225), gloves (15.1%, 34/225), and coatings (paint/lacquer/shellac/varnish/stains) (9.8%, 22/225). Conclusions: Occupational CD in North American CWs is common. In this group, frequently identified etiological sources of occupational allergic CD included metals, epoxy resin, and rubber.
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- 2024
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49. Photopatch testing: Clinical characteristics, test results, and final diagnoses from the North American Contact Dermatitis Group, 2009-2020.
- Author
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DeLeo VA, Adler BL, Belsito DV, Pratt MD, Sasseville D, Reeder MJ, Warshaw EM, Atwater AR, Taylor JS, Storrs F, Marks JG Jr, DeKoven JG, Silverberg J, Yu J, Botto N, Houle MC, Mowad CM, and Dunnick CA
- Subjects
- Humans, Female, Middle Aged, Adult, Retrospective Studies, Male, Young Adult, North America, Aged, Adolescent, Photosensitivity Disorders diagnosis, Allergens adverse effects, Dermatitis, Allergic Contact diagnosis, Dermatitis, Allergic Contact etiology, Child, Dermatitis, Photoallergic diagnosis, Dermatitis, Photoallergic etiology, Patch Tests methods, Sunscreening Agents adverse effects
- Abstract
Background: Photoallergic contact dermatitis (PACD) is a delayed hypersensitivity reaction to allergens only in the presence of ultraviolet radiation in sunlight. Photopatch testing (PhotoPT) is necessary to confirm the diagnosis of PACD. There are few published studies of PhotoPT in North America., Objective: To summarise the results of patients photopatch tested by members of the North American Contact Dermatitis Group (NACDG), 2009-2020., Methods: Retrospective analysis of patient characteristics and PhotoPT results to 32 allergens on the NACDG Photopatch Test Series., Results: Most of the 454 tested patients were female (70.3%), 21-60 years old (66.7%) and White (66.7%). There were a total of 119 positive photopatch tests. Sunscreen agents comprised 88.2% of those, with benzophenones responsible for over half of them. Final diagnoses included PACD in 17.2%, allergic contact dermatitis (ACD) in 44.5%, polymorphous light eruption (PMLE) in 18.9% and chronic actinic dermatitis (CAD) in 9.0% of patients., Conclusions: In 454 patients with suspected photosensitivity referred for photopatch testing in North America, approximately one-fifth had PACD. Sunscreen agents, especially benzophenones, were the most common photoallergens. Other common diagnoses included ACD, PMLE and CAD. Photopatch testing is an important tool for differentiating these conditions., (© 2024 The Author(s). Contact Dermatitis published by John Wiley & Sons Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
50. Response to commentary on: Staged laparoscopic orchiopexy of intra-abdominal testis: Spermatic vessels division Vs traction? a multicentric comparative study.
- Author
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Bidault-Jourdainne V, Botto N, Peycelon M, Carricaburu E, Lopez P, Bonnard A, Blanc T, El-Ghoneimi A, and Paye-Jaouen A
- Subjects
- Humans, Male, Spermatic Cord surgery, Spermatic Cord blood supply, Traction methods, Multicenter Studies as Topic, Orchiopexy methods, Laparoscopy methods, Cryptorchidism surgery, Testis surgery, Testis blood supply
- Published
- 2024
- Full Text
- View/download PDF
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