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Cretella Lombardo E, Loberto S, Balboni A, DE Razza FC, Fanelli S, Pavoni C. Experimental validation of mechanical oscillating IPR system. Minerva Dent Oral Sci 2024; 73:7-13. [PMID: 37768687 DOI: 10.23736/s2724-6329.23.04815-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
BACKGROUND Interproximal enamel reduction (IPR) is a clinical procedure which involves reduction and anatomic recontouring of interproximal surfaces of enamel as a method of gaining space. The biological effects related to this clinical procedure have long been discussed. Thus, the aim of this study was to evaluate the enamel reduction efficiency and the effects on enamel surfaces of the oscillating mechanical system for interproximal enamel reduction (IPR). METHODS Fifteen complete oscillating IPR sequences included one opener (0.1 mm), two metallic strips for active IPR phase (0.2 and 0.3 mm), three resin strips for active and initial polishing phases (0.4 and 0.5 mm), and one resin strip for polishing phase (0.15 mm). Sequences were selected and tested on fifteen freshly extracted teeth by means of tribological tests with alternative dry-sliding motion (Linear Reciprocating Tribometer; C.S.M. Instruments, Peseaux, Switzerland). A 3D analysis of treated surfaces was performed by using a TayMap software. Then, enamel surfaces were qualitatively evaluated before and after the tribological analysis, with a FEI Quanta 200 (FEI, Hillsboro, OR, USA) in high vacuum at 30.00 kV. Images were acquired at a 30×, 100× and 300× magnification. RESULTS Minimum surface irregularities were observed on all treated enamel surfaces when compared with untreated ones. The 3D analysis showed a uniform wear pattern after tribological tests. Meanwhile, the SEM analysis revealed smooth and regular wear lines on treated surfaces after the entire mechanical IPR sequence. The macroscopic irregularities illustrated can be considered similar to those of untreated surfaces. CONCLUSIONS The adoption of a standardized oscillating IPR sequence allows an efficient reduction of the interproximal enamel, leaving regular and harmonious surfaces. Adequate polishing procedures should always be performed at the end of active IPR phases in order to guarantee a good long-term prognosis and proper respect of biological structures.
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Affiliation(s)
| | - Saveria Loberto
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Alessia Balboni
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy -
| | | | - Silvia Fanelli
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Chiara Pavoni
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Department of Dentistry UNSBC, Tirana, Albania
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Gualtieri P, Trombetta D, Smeriglio A, Frank G, Alibrandi A, Leggeri G, Marchetti M, Zingale I, Fanelli S, Stocchi A, Di Renzo L. Effectiveness of Nutritional Supplements for Attenuating the Side Effects of SARS-CoV-2 Vaccines. Nutrients 2023; 15:nu15081807. [PMID: 37111026 PMCID: PMC10141698 DOI: 10.3390/nu15081807] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
Supplementation is known to enhance the immune response and reduce infection. Therefore, the association between immune nutrients and vaccine side effects needs to be investigated. Our aim was to analyze the relationship between vaccination side effects and supplement intake among the Italian population. The study included a questionnaire asking for personal data, anthropometric information, COVID-19 infection and immunity response, and COVID-19 vaccination and supplementation. The survey was conducted from 8 February to 15 June 2022. In the study, 776 respondents were included, aged between 18 and 86 (71.3% females). We observed a statistically significant correlation between supplement consumption and side effects at the end of the vaccination cycle (p = 0.000), which was also confirmed by logistic regression (p = 0.02). Significant associations were observed between supplement intake and side effects of diarrhea and nausea at the end of the vaccination cycle (p = 0.001; p = 0.04, respectively). Significant associations were observed between side effects and omega-3 and mineral supplementation at the start of the vaccination cycle (p = 0.02; p = 0.001, respectively), and between side effects and vitamin supplementation at the end of the vaccination cycle (p = 0.005). In conclusion, our study shows a positive impact of supplementation on vaccination response, increasing host immune defenses, and reducing side effects.
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Affiliation(s)
- Paola Gualtieri
- Section of Clinical Nutrition and Nutrigenomic, Department of Biomedicine and Prevention, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Domenico Trombetta
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Antonella Smeriglio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Giulia Frank
- Ph.D. School of Applied Medical-Surgical Sciences, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Angela Alibrandi
- Department of Economy, University of Messina, Via dei Verdi 75, 98122 Messina, Italy
| | - Giulia Leggeri
- Section of Clinical Nutrition and Nutrigenomic, Department of Biomedicine and Prevention, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Marco Marchetti
- School of Specialization in Food Science, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Ilaria Zingale
- School of Specialization in Food Science, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Silvia Fanelli
- School of Specialization in Food Science, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Arianna Stocchi
- School of Specialization in Food Science, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
| | - Laura Di Renzo
- Section of Clinical Nutrition and Nutrigenomic, Department of Biomedicine and Prevention, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
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Lombardo EC, Fanelli S, Paoloni V, Cozza P, Lione R. Comparison between two different expansion protocols in early mixed dentition: Clear Aligners vs Rapid Maxillary Expansion. Semin Orthod 2023. [DOI: 10.1053/j.sodo.2023.03.005] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Cretella Lombardo E, Paoloni V, Fanelli S, Pavoni C, Gazzani F, Cozza P. Evaluation of the Upper Arch Morphological Changes after Two Different Protocols of Expansion in Early Mixed Dentition: Rapid Maxillary Expansion and Invisalign® First System. Life (Basel) 2022; 12:life12091323. [PMID: 36143360 PMCID: PMC9502768 DOI: 10.3390/life12091323] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/01/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
Background: The objective of this retrospective study was to analyze the morphological changes of the upper arch after two protocols of expansion, the Invisalign® First system and rapid maxillary expansion (RME), in mixed dentition by means of geometric morphometric analysis (GMM). Methods: Digital dental casts of 32 children treated either with RME (RME group: 17 subjects; mean age 8.1 years) or the First system (First group: subjects; mean age 8.4 years) were collected. For both the RG and FG, pre-(T1) and post-treatment(T2) digital models were created. A total of 14 landmarks were digitized and GMM was applied. Procrustes analysis and principal component analysis (PCA) were performed. Results: The PC1 resulting from the T2–T1 comparison in the RG g showed statistically significant morphological changes in the posterior region of the upper arch shape, without significant variations in the anterior region. The comparison of the T2–T1 changes in the FG showed an increase in the transverse dimension at the level of the canine and the first deciduous molar widths, with morphological variation in the anterior region due to frontal teeth alignment. Conclusions: The First system induced shape modifications of the upper arch during expansion in contrast to RME. The FG presented an improvement in the maxillary arch shape, while the RG maintained the initial triangular shape.
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Affiliation(s)
- Elisabetta Cretella Lombardo
- Department of Systems Medicine, University of Rome “Tor Vergata”, Viale Oxford 81, 00133 Rome, Italy
- Correspondence: ; Tel.: +39-32-77356421
| | - Valeria Paoloni
- Department of Systems Medicine, University of Rome “Tor Vergata”, Viale Oxford 81, 00133 Rome, Italy
| | - Silvia Fanelli
- Department of Systems Medicine, University of Rome “Tor Vergata”, Viale Oxford 81, 00133 Rome, Italy
| | - Chiara Pavoni
- Department of Systems Medicine, University of Rome “Tor Vergata”, Viale Oxford 81, 00133 Rome, Italy
| | - Francesca Gazzani
- Department of Systems Medicine, University of Rome “Tor Vergata”, Viale Oxford 81, 00133 Rome, Italy
| | - Paola Cozza
- Department of Systems Medicine, University of Rome “Tor Vergata”, Viale Oxford 81, 00133 Rome, Italy
- Department of Dentistry, Universiteti Katolik “Zoja e Këshillit të Mirë”, 1026 Tirana, Albania
- Department of Health Sciences, UniCamillus-Saint Camillus International University, 00133 Rome, Italy
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Fanelli S, Madril P, Heitman K, Taylor C. Longitudinal Trends in Plant-based and Animal-based Protein Intakes in US Adults: NHANES 2005 to 2018. J Acad Nutr Diet 2021. [DOI: 10.1016/j.jand.2021.08.088] [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: 10/20/2022]
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Solis M, Cappelletti N, Bonetto C, Franco M, Fanelli S, Amalvy J, Mugni H. Attenuation of insecticide impact by a small wetland in a stream draining a horticultural basin in Argentina. Sci Total Environ 2021; 785:147317. [PMID: 33933765 DOI: 10.1016/j.scitotenv.2021.147317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 12/24/2020] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
Horticulture has greatly increased in Argentina in recent decades mainly due to increasing greenhouse utilization and agrochemical consumption, thus representing a threat to adjacent water bodies. Riparian wetlands, however, could attenuate agrochemical contamination. The present work therefore compared insecticide concentrations in bottom sediments in addition to sediment toxicity to the amphipod Hyalella curvispina and investigated the macroinvertebrate composition upstream and downstream from a natural wetland in a small stream draining a basin undergoing intense horticultural production. The wetland surface was covered by macrophytes, mainly Thypha sp., and the insecticide concentrations measured downstream from the wetland were significantly lower, at roughly 19% of the upstream values. The growth rates of H. curvispina were significantly higher when exposed to the sediments downstream from the wetland, while the macroinvertebrate-assemblage composition was significantly different upstream and downstream: the snail Pomacea canaliculata was the dominant species upstream while the amphipod H. curvispina was dominant downstream. Pomacea canaliculata is often the dominant species in the regional streams draining agriculture and horticultural basins. Hyalella curvispina is sensitive to pesticide toxicity and is often dominant in streams draining extensive livestock basins and within a biosphere reserve. We conclude that riparian wetlands effectively attenuate horticulture contamination in pampean streams and should therefore be preserved and restored.
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Affiliation(s)
- M Solis
- Instituto de Limnología "Dr. Raúl Ringuelet" (CONICET-UNLP), Bv 120 n° 1437, CP 1900 La Plata, Argentina.
| | - N Cappelletti
- Grupo de investigación en Geología Ambiental (GIGA), Universidad Nacional de Avellaneda (UNDAV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avellaneda, Argentina
| | - C Bonetto
- Instituto de Limnología "Dr. Raúl Ringuelet" (CONICET-UNLP), Bv 120 n° 1437, CP 1900 La Plata, Argentina
| | - M Franco
- Universidad Nacional de Avellaneda, Mario Bravo 1460, CP 1870, Avellaneda, Argentina
| | - S Fanelli
- Instituto de Limnología "Dr. Raúl Ringuelet" (CONICET-UNLP), Bv 120 n° 1437, CP 1900 La Plata, Argentina
| | - J Amalvy
- Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales, CITEMA (UTN/CICPBA). Av. 60 y 124, CP 1923 Berisso, Buenos Aires, Argentina
| | - H Mugni
- Instituto de Limnología "Dr. Raúl Ringuelet" (CONICET-UNLP), Bv 120 n° 1437, CP 1900 La Plata, Argentina
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Fanelli S, Heitman K, Pisegna J, Kelly O, Krok-Schoen J, Taylor C. Comparison between Self-Perceived and Actual Diet Quality by Diabetes Status in US Adults. J Acad Nutr Diet 2020. [DOI: 10.1016/j.jand.2020.06.058] [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: 11/16/2022]
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Fanelli S, Heitman K, Pisegna J, Kelly O, Krok-Schoen J, Taylor C. Self-Perceived Health Status and Reported Importance of Motivational Factors by Diabetes Status in US Adults. J Acad Nutr Diet 2019. [DOI: 10.1016/j.jand.2019.08.162] [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: 11/26/2022]
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Fanelli S, Kelly O, Luo M, Krok-Schoen J, Taylor C. Differences in Micronutrient Intakes by Levels of Glycemic Control in US Adults. J Acad Nutr Diet 2018. [DOI: 10.1016/j.jand.2018.08.052] [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: 10/28/2022]
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Fanelli S, Kelly O, Luo M, Krok-Schoen J, Taylor C. Prevalence of Physical Function Limitations by Protein Intake Levels in US Older Adults. J Acad Nutr Diet 2018. [DOI: 10.1016/j.jand.2018.08.051] [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: 11/16/2022]
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Hunt L, Bonetto C, Marrochi N, Scalise A, Fanelli S, Liess M, Lydy MJ, Chiu MC, Resh VH. Species at Risk (SPEAR) index indicates effects of insecticides on stream invertebrate communities in soy production regions of the Argentine Pampas. Sci Total Environ 2017; 580:699-709. [PMID: 27986319 DOI: 10.1016/j.scitotenv.2016.12.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 08/16/2016] [Revised: 11/28/2016] [Accepted: 12/02/2016] [Indexed: 06/06/2023]
Abstract
We investigated relationships among insecticides and aquatic invertebrate communities in 22 streams of two soy production regions of the Argentine Pampas over three growing seasons. Chlorpyrifos, endosulfan, cypermethrin, and lambda-cyhalothrin were the insecticides most frequently detected in stream sediments. The Species at Risk (SPEAR) pesticide bioassessment index (SPEARpesticides) was adapted and applied to evaluate relationships between sediment insecticide toxic units (TUs) and invertebrate communities associated with both benthic habitats and emergent vegetation habitats. SPEARpesticides was the only response metric that was significantly correlated with total insecticide TU values for all three averaged data sets, consistently showing a trend of decreasing values with increasing TU values (r2=0.35 to 0.42, p-value=0.001 to 0.03). Although pyrethroids were the insecticides that contributed the highest TU values, toxicity calculated based on all insecticides was better at predicting changes in invertebrate communities than toxicity of pyrethroids alone. Crustaceans, particularly the amphipod Hyalella spp., which are relatively sensitive to pesticides, played a large role in the performance of SPEARpesticides, and the relative abundance of all crustaceans also showed a significant decreasing trend with increasing insecticide TUs for two of three data sets (r2=0.30 to 0.57, p-value=0.003 to 0.04) examined. For all data sets, total insecticide TU was the most important variable in explaining variance in the SPEARpesticides index. The present study was the first application of the SPEAR index in South America, and the first one to use it to evaluate effects of pesticides on invertebrate communities associated with aquatic vegetation. Although the SPEAR index was developed in Europe, it performed well in the Argentine Pampas with only minor modifications, and would likely improve in performance as more data are obtained on traits of South American taxa, such as pesticide sensitivity and generation time.
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Affiliation(s)
- L Hunt
- University of California, Berkeley, Department of Environmental Science, Policy & Management, Berkeley, CA 94720-3114, USA.
| | - C Bonetto
- ILPLA (CONICET-CCT La Plata) - UNLP Instituto de Limnología "Dr. Raúl. A. Ringuelet", Boulevard 120 y 62, La Plata 1900, Buenos Aires, Argentina
| | - N Marrochi
- ILPLA (CONICET-CCT La Plata) - UNLP Instituto de Limnología "Dr. Raúl. A. Ringuelet", Boulevard 120 y 62, La Plata 1900, Buenos Aires, Argentina
| | - A Scalise
- University of California, Berkeley, Department of Environmental Science, Policy & Management, Berkeley, CA 94720-3114, USA
| | - S Fanelli
- ILPLA (CONICET-CCT La Plata) - UNLP Instituto de Limnología "Dr. Raúl. A. Ringuelet", Boulevard 120 y 62, La Plata 1900, Buenos Aires, Argentina
| | - M Liess
- UFZ, Helmholtz Centre for Environmental Research, System-Ecotoxicology, Leipzig, Germany
| | - M J Lydy
- Center for Fisheries, Aquaculture and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, IL 62901, United States
| | - M-C Chiu
- University of California, Berkeley, Department of Environmental Science, Policy & Management, Berkeley, CA 94720-3114, USA
| | - V H Resh
- University of California, Berkeley, Department of Environmental Science, Policy & Management, Berkeley, CA 94720-3114, USA
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Solis M, Mugni H, Hunt L, Marrochi N, Fanelli S, Bonetto C. Land use effect on invertebrate assemblages in Pampasic streams (Buenos Aires, Argentina). Environ Monit Assess 2016; 188:539. [PMID: 27581006 DOI: 10.1007/s10661-016-5545-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 02/09/2016] [Accepted: 08/24/2016] [Indexed: 06/06/2023]
Abstract
Agriculture and livestock may contribute to water quality degradation in adjacent waterbodies and produce changes in the resident invertebrate composition. The objective of the present study was to assess land use effects on the stream invertebrate assemblages in rural areas of the Argentine Pampa. The four sampling events were performed at six sites in four streams of the Pampa plain; two streams were sampled inside a biosphere reserve, and another one was surrounded by extensive livestock fields. The fourth stream was sampled at three sites; the upstream site was adjacent to agricultural plots, the following site was adjacent to an intensive livestock plot and the downstream site was adjacent to extensive breeding cattle plots. Higher pesticide concentrations were found at the site adjacent to agricultural plots and higher nutrient concentrations at the sites adjacent to agricultural and intensive breeding cattle plots. The invertebrate fauna were also different at these sites. Multivariate analysis showed a relationship between nutrient concentrations and taxonomic composition. Amphipoda (Hyalella curvispina) was the dominant group in the reserve and extensive breeding cattle sites, but was not present in the agricultural site. Also, Chironomidae were absent from the agricultural site while present at other sites. Gasteropoda (Biomphalaria peregrina), Zygoptera, and Hirudinea were dominant at the most impacted agricultural and intensive breeding cattle sites.
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Affiliation(s)
- Marina Solis
- ILPLA (CONICET-CCT La Plata)-UNLP Instituto de Limnología "Dr. Raúl A. Ringuelet", Boulevard 120 y 62. La Plata, 1900, Buenos Aires, Argentina
| | - Hernán Mugni
- ILPLA (CONICET-CCT La Plata)-UNLP Instituto de Limnología "Dr. Raúl A. Ringuelet", Boulevard 120 y 62. La Plata, 1900, Buenos Aires, Argentina.
| | - Lisa Hunt
- Department of Environmental Science, Policy & Management, University of California, Berkeley, CA, 94720-3114, USA
| | - Natalia Marrochi
- ILPLA (CONICET-CCT La Plata)-UNLP Instituto de Limnología "Dr. Raúl A. Ringuelet", Boulevard 120 y 62. La Plata, 1900, Buenos Aires, Argentina
| | - Silvia Fanelli
- ILPLA (CONICET-CCT La Plata)-UNLP Instituto de Limnología "Dr. Raúl A. Ringuelet", Boulevard 120 y 62. La Plata, 1900, Buenos Aires, Argentina
| | - Carlos Bonetto
- ILPLA (CONICET-CCT La Plata)-UNLP Instituto de Limnología "Dr. Raúl A. Ringuelet", Boulevard 120 y 62. La Plata, 1900, Buenos Aires, Argentina
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Hunt L, Bonetto C, Resh VH, Buss DF, Fanelli S, Marrochi N, Lydy MJ. Insecticide concentrations in stream sediments of soy production regions of South America. Sci Total Environ 2016; 547:114-124. [PMID: 26780136 DOI: 10.1016/j.scitotenv.2015.12.140] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 08/22/2015] [Revised: 12/28/2015] [Accepted: 12/29/2015] [Indexed: 06/05/2023]
Abstract
Concentrations of 17 insecticides were measured in sediments collected from 53 streams in soy production regions of South America (Argentina in 2011-2014, Paraguay and Brazil in 2013) during peak application periods. Although environmental regulations are quite different in each country, commonly used insecticides were detected at high frequencies in all regions. Maximum concentrations (and detection frequencies) for each sampling event ranged from: 1.2-7.4 ng/g dw chlorpyrifos (56-100%); 0.9-8.3 ng/g dw cypermethrin (20-100%); 0.42-16.6 ng/g dw lambda-cyhalothrin (60-100%); and, 0.49-2.1 ng/g dw endosulfan (13-100%). Other pyrethroids were detected less frequently. Banned organochlorines were most frequently detected in Brazil. In all countries, cypermethrin and/or lambda-cyhalothrin toxic units (TUs), based on Hyalella azteca LC50 bioassays, were occasionally>0.5 (indicating likely acute toxicity), while TUs for other insecticides were <0.5. All samples with total insecticide TU>1 were collected from streams with riparian buffer width<20 m. A multiple regression analysis that included five landscape and habitat predictor variables for the Brazilian streams examined indicated that buffer width was the most important predictor variable in explaining total insecticide TU values. While Brazil and Paraguay require forested stream buffers, there were no such regulations in the Argentine pampas, where buffer widths were smaller. Multiple insecticides were found in almost all stream sediment samples in intensive soy production regions, with pyrethroids most often occurring at acutely toxic concentrations, and the greatest potential for insecticide toxicity occurring in streams with minimum buffer width<20 m.
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Affiliation(s)
- Lisa Hunt
- University of California, Berkeley, Department of Environmental Science, Policy & Management, Berkeley, CA 94720-3114, USA.
| | - Carlos Bonetto
- ILPLA (CONICET-CCT La Plata) - UNLP Instituto de Limnología "Dr. Raúl A. Ringuelet", Boulevard 120 y 62, La Plata, 1900, Buenos Aires, Argentina.
| | - Vincent H Resh
- University of California, Berkeley, Department of Environmental Science, Policy & Management, Berkeley, CA 94720-3114, USA.
| | - Daniel Forsin Buss
- Laboratório de Avaliação e Promoção da Saúde Ambiental, IOC, FIOCRUZ, Av. Brasil 4365 Manguinhos, Rio de Janeiro, RJ 21045-900, Brazil.
| | - Silvia Fanelli
- ILPLA (CONICET-CCT La Plata) - UNLP Instituto de Limnología "Dr. Raúl A. Ringuelet", Boulevard 120 y 62, La Plata, 1900, Buenos Aires, Argentina.
| | - Natalia Marrochi
- ILPLA (CONICET-CCT La Plata) - UNLP Instituto de Limnología "Dr. Raúl A. Ringuelet", Boulevard 120 y 62, La Plata, 1900, Buenos Aires, Argentina.
| | - Michael J Lydy
- Center for Fisheries, Aquaculture and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, IL 62901, USA.
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Mugni H, Paracampo A, Demetrio P, Scalise A, Solís M, Fanelli S, Bonetto C. Acute Toxicity of Endosulfan to the Non-target Organisms Hyalella curvispina and Cnesterodon decemmaculatus. Bull Environ Contam Toxicol 2015; 95:363-367. [PMID: 26193836 DOI: 10.1007/s00128-015-1608-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 07/15/2015] [Indexed: 06/04/2023]
Abstract
Pesticide consumption in Argentina has steadily increased over the last two decades, while one of these compounds, namely endosulfan, is commonly found in environmental samples. Also the fish Cnesterodon decemmaculatus and the amphipod Hyalella curvispina are widely distributed in agricultural areas of southern South America. The aim of the present contribution was therefore to determine the acute toxicity of endosulfan to both organisms, and compare it with species sensitivity distributions (SSD) and measured field concentrations. The 48 h-LC50 (with 95 % confidence limits) were 1.8 (1.6-2.1) µg/L for C. decemmaculatus and 16.4 (15.1-17.7) µg/L for H. curvispina. C. decemmaculatus was more sensitive than 74 % of fish based on the SSD. Endosulfan concentrations in stream water reported in the literature were often higher than the C. decemmaculatus LC50. It may hence be concluded that C. decemmaculatus is a suitable sentinel organism for ecotoxicological risk assessment in South America.
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Affiliation(s)
- Hernán Mugni
- Instituto de Limnología ''Dr. Raúl. A. Ringuelet'', ILPLA (CONICET-CCT La Plata) - UNLP, Boulevard 120 y 62, 1900, La Plata, Buenos Aires, Argentina,
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Gorgoni M, Ferlazzo F, Moroni F, D’Atri A, Donarelli S, Fanelli S, Torriglia IG, Lauri G, Ferrara M, Marzano C, Rossini P, Gennaro LD. 138. Is median nerve somatosensory stimulation associated to cortical changes as a function of sleep deprivation? Clin Neurophysiol 2013. [DOI: 10.1016/j.clinph.2013.06.165] [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: 12/01/2022]
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Gorgoni M, Moroni F, Ferlazzo F, D'Atri A, Fanelli S, Gizzi Torriglia I, Donarelli S, Marzano C, Ferrara M, Rossini P, De Gennaro L. P22.9 Changes of cortical plasticity while accumulating a sleep debt. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60570-1] [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: 10/17/2022]
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17
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Castro G, Buthet L, Fanelli S, Castro CRD, Costantini M, Bietto F, Castro J. Oxidation of alcohol to acetaldehyde, hydroxyl radical formation, and oxidative stress in the rat uterus. Their relation to reproductive toxicity. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.771] [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: 11/26/2022]
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Bortoletti A, Di Fiore C, Fanelli S, Zellini P. A new class of quasi-Newtonian methods for optimal learning in MLP-networks. IEEE Trans Neural Netw 2008; 14:263-73. [PMID: 18238010 DOI: 10.1109/tnn.2003.809425] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this paper, we present a new class of quasi-Newton methods for an effective learning in large multilayer perceptron (MLP)-networks. The algorithms introduced in this work, named LQN, utilize an iterative scheme of a generalized BFGS-type method, involving a suitable family of matrix algebras L. The main advantages of these innovative methods are based upon the fact that they have an O(nlogn) complexity per step and that they require O(n) memory allocations. Numerical experiences, performed on a set of standard benchmarks of MLP-networks, show the competitivity of the LQN methods, especially for large values of n.
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Affiliation(s)
- A Bortoletti
- Dipt. di Matematica, Univ. di Roma "Tor Vergata", Rome, Italy
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Abstract
An internship program was developed for new graduate nurses hired in the critical care area. Program goals included facilitating growth and development of 21 newly graduated BSN nurses to prepare them to care for a critically ill adult. The program design included the support and guidance of university faculty for a 3-month period. The program content included planned observational, didactic, and clinical precept experiences. Interns were evaluated according to clinical logs, didactic examinations, and preceptor assessments. At completion of the program, all interns were hired by the participating hospital. Two interns elected to take medical-surgical positions. The remaining interns accepted positions within the critical care and "step-down" areas.
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Affiliation(s)
- S Fanelli
- William Paterson University, Wayne, New Jersey, USA
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Di Martino M, Fanelli S, Protasi M. Exploring and comparing the best "direct methods" for the efficient training of MLP-networks. ACTA ACUST UNITED AC 1996; 7:1497-502. [DOI: 10.1109/72.548177] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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