1
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Moura AR, Santos AR, Losano JDA, Siqueira AFP, Hamilton TRS, Zanella R, Caires KC, Simões R. Evaluation of sperm and hormonal assessments in Wagyu, Nellore, and Angus bulls. ZYGOTE 2023; 31:507-516. [PMID: 37492001 DOI: 10.1017/s0967199423000278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Wagyu bulls are known to have a highly exacerbated libido, as shown by the intense sexual interest of young calves. Therefore we believe that Wagyu male animals have specialized Sertoli and Leydig cells that are directly involved with the sexual precocity in this breed as mature bulls have a small scrotal circumference. This study aimed to evaluate whether there were differences in the hormone and sperm characteristics of Wagyu bulls compared with the same characteristics of subspecies Bos indicus and Bos taurus sires. Frozen-thawed semen from Wagyu, Nellore, and Angus sires were analyzed for sperm kinetics (computer-assisted sperm analysis), plasma membrane integrity, chromatin integrity, acrosome status, mitochondrial activity, lipid peroxidation and hormone [luteinizing hormone (LH) and testosterone] serum concentration. The results showed that Wagyu had lower total motility and an increased number of sperm with no motility when compared with Nellore and Angus bulls. Wagyu breed did not differ from those breeds when considering plasma and acrosome membranes integrity, mitochondrial potential, chromatin resistance, sperm lipid peroxidation or hormone (LH and testosterone) concentrations. We concluded that Wagyu sires had lower total motility when compared with Nellore and Angus bulls. Wagyu breed did not differ from these breeds when considering plasma and acrosome membranes integrity, mitochondrial potential, chromatin resistance, sperm lipid peroxidation, or hormone (LH and testosterone) concentrations.
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Affiliation(s)
- A R Moura
- Center for Natural and Human Sciences, Federal University of ABC, Santo André, Sao Paulo, Brazil
| | - A R Santos
- Center for Natural and Human Sciences, Federal University of ABC, Santo André, Sao Paulo, Brazil
| | - J D A Losano
- Department of Animal Sciences, University of Florida, USA
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - A F P Siqueira
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - T R S Hamilton
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - R Zanella
- Escola de Ciências Agrárias Inovação e Negócios, Curso de Medicina Veterinária, Universidade de Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
- Programa de Pós Graduação em BioExperimentação, Universidade de Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
| | - K C Caires
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii, Manoa, Hawaii, USA
| | - R Simões
- Center for Natural and Human Sciences, Federal University of ABC, Santo André, Sao Paulo, Brazil
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Martino FK, Pini S, Scaparrotta G, Schirinzi M, Gnappi M, Fragasso A, Zanella R, Naso E, De Giorgi ML, Carraro G, Nalesso F, Calò LA. Recombinant Varicella Zoster vaccine in haemodialysis facilities: adherence and safety. J Nephrol 2023; 36:2155-2158. [PMID: 37392330 DOI: 10.1007/s40620-023-01690-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 05/23/2023] [Indexed: 07/03/2023]
Affiliation(s)
- Francesca K Martino
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Stefano Pini
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Giuseppe Scaparrotta
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Marilena Schirinzi
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Maddalena Gnappi
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Antonio Fragasso
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Ruggero Zanella
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Elena Naso
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Maria Loreta De Giorgi
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Gianni Carraro
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Federico Nalesso
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | - Lorenzo A Calò
- Nephrology, Dialysis, Transplantation Unit, Department of Medicine (DIMED), University of Padova, Via Giustiniani, 2, 35128, Padua, Italy.
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Nalesso F, Rigato M, Cirella I, Protti MP, Zanella R, Rossi B, Putti MC, Martino FK, Calò LA. The Assessment of Renal Functional Reserve in β-Thalassemia Major Patients by an Innovative Ultrasound and Doppler Technique: A Pilot Study. J Clin Med 2022; 11:jcm11226752. [PMID: 36431228 PMCID: PMC9699445 DOI: 10.3390/jcm11226752] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/02/2022] [Accepted: 11/10/2022] [Indexed: 11/17/2022] Open
Abstract
Beta-thalassemia syndromes are the most common inherited monogenic disorders worldwide. The most common pathophysiologic and clinical renal disease manifestations of in β-TM patients is the tubular dysfunctions related to iron overload, chronic anemia, and the need for chronic iron chelation therapy. The aim of this pilot study is to apply an innovative ultrasound and Doppler technique to assess the Renal Functional Reserve (RFR) in β-TM patients, and to evaluate its reliability in iron overload tubulopathy. Ultrasound assessment of intra-parenchymal renal resistive index variation (IRRIV) has recently been proposed as a safe and reproducible technique to identify RFR presence. We define the preserved RFR when the Delta Renal Resistive Index (RRI) is >0.05 (baseline RRI—minimum RRI value during stress) in the Renal Stress Test (RST). Nineteen β-TM patients were enrolled for this study. In our series, we found a strong negative correlation between mean ferritin values and Delta RRI (R = −0.51, p = 0.03). This pilot study suggested the RST as reliable tool for assessing the RFR by ultrasound. Specifically, RST could help in clinical practice suggesting the patient’s management and iron chelation therapy.
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Affiliation(s)
- Federico Nalesso
- Department of Medicine, University of Padova, 35128 Padova, Italy
- Correspondence:
| | - Matteo Rigato
- Department of Medicine, University of Padova, 35128 Padova, Italy
| | - Irene Cirella
- Department of Medicine, University of Padova, 35128 Padova, Italy
| | | | - Ruggero Zanella
- Department of Medicine, University of Padova, 35128 Padova, Italy
| | - Bartolomeo Rossi
- Haematology-Oncology Clinic, Women and Child’s Health Department, University of Padua, 35122 Padua, Italy
| | - Maria Caterina Putti
- Haematology-Oncology Clinic, Women and Child’s Health Department, University of Padua, 35122 Padua, Italy
| | | | - Lorenzo A. Calò
- Department of Medicine, University of Padova, 35128 Padova, Italy
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Camposeco R, Zanella R. Activity boosting of gold nanoparticles supported on V2O5/TiO2 nanostructures for CO oxidation at low temperature. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.04.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Suárez-Vázquez S, Moreno-Román E, Zanella R, Cruz-López A, García-Goméz C, Nieto-Márquez A, Gil S. Insight into the surface reaction mechanism of toluene oxidation over a composite CeOx/La1-xCexMnO3 catalyst using Drifts. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117831] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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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6
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Camposeco R, Torres AE, Zanella R. Influence of the Preparation Method of Au, Pd, Pt, and Rh/TiO2 Nanostructures and Their Catalytic Activity on the CO Oxidation at Low Temperature. Top Catal 2022. [DOI: 10.1007/s11244-022-01607-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Zanella R, Tellier RL, Plapp M, Tegze G, Henry H. Three-dimensional numerical simulation of droplet formation by Rayleigh–Taylor instability in multiphase corium. Nuclear Engineering and Design 2021. [DOI: 10.1016/j.nucengdes.2021.111177] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Bondan C, Folchini J, Guimarães L, Noro M, Zanella R, Alves LP, Fontaneli R, Gonzalez F. Milk yield and composition in dairy cows with post-partum disorders. ARQ BRAS MED VET ZOO 2021. [DOI: 10.1590/1678-4162-12095] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT This study aimed to determine the impact of different post-partum disorders on milk yield and composition. One hundred and fifteen Holstein cows from a commercial dairy farm located in the state of Rio Grande do Sul in southern Brazil were monitored up to 62 days post-partum. During this period, body condition score evaluation and animal clinical examination were conducted. Percentages of fat, protein, and lactose, as well as somatic cells score, were determined in milk samples. The AST activity and concentrations of NEFA, calcium, and BHBA, were analyzed in blood samples. The occurrence of clinical disorders was identified in 30 (26%) cows. Subclinical disorders were identified in 64 (56%) cows. Only 21 (18%) cows did not suffer any kind of disorder within the studied period. In this study, no significant differences were found in milk production, protein, and somatic cell count in clinical, subclinical, and healthy cows. Milk fat and the fat: protein quotient (F:P) were higher in cows with clinical disorders and the 6 to 21 days in milk, and lactose were lower in cows with clinical disorders and the 22 to 42 days in milk (P<0.05).
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Affiliation(s)
| | | | | | - M. Noro
- Universidade Federal do Pampa, Brazil
| | | | | | | | - F. Gonzalez
- Universidade Federal do Rio Grande do Sul, Brazil
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Ilieva L, Petrova P, Pantaleo G, Zanella R, Sobczak J, Lisowski W, Ivanov I, Kaszkur Z, Liotta L, Venezia A, Tabakova T. Impact of ceria loading on the preferential CO oxidation over gold catalysts on CeO2/Al2O3 and Y-doped CeO2/Al2O3 supports prepared by mechanical mixing. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.06.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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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10
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Camposeco R, Castillo S, Hinojosa-Reyes M, Mejía-Centeno I, Zanella R. Surface Acidity, Adsorption Capacity, and Photocatalytic Activity of SiO2 Supported on TiO2 Nanotubes for Rhodamine B Degradation. Top Catal 2020. [DOI: 10.1007/s11244-020-01339-3] [Citation(s) in RCA: 1] [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: 02/05/2023]
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11
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Durán-Álvarez J, Del Angel R, Ramírez-Ortega D, Guerrero-Araque D, Zanella R. An alternative method for the synthesis of functional Au/WO3 materials and their use in the photocatalytic production of hydrogen. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.09.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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13
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Marchesi J, Ibelli A, Peixoto J, Cantão M, Pandolfi J, Marciano C, Zanella R, Settles M, Coutinho L, Ledur M. Whole transcriptome analysis of the pectoralis major muscle reveals molecular mechanisms involved with white striping in broiler chickens. Poult Sci 2019; 98:590-601. [DOI: 10.3382/ps/pey429] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 08/23/2018] [Indexed: 01/10/2023] Open
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14
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Camposeco R, Castillo S, Hinojosa-Reyes M, Mejía-Centeno I, Zanella R. Effect of incorporating vanadium oxide to TiO2, Zeolite-ZM5, SBA and P25 supports on the photocatalytic activity under visible light. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Zanella R, Morés N, Morés MAZ, Peixoto JO, Zanella EL, Ciacci-Zanella JR, Ibelli AMG, Gava D, Cantão ME, Ledur MC. Genome-wide association study of periweaning failure-to-thrive syndrome (PFTS) in pigs. Vet Rec 2016; 178:653. [PMID: 27162284 DOI: 10.1136/vr.103546] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2016] [Indexed: 01/01/2023]
Abstract
Porcine periweaning-failure-to-thrive syndrome (PFTS) is a condition that affects newly weaned piglets. It is characterised by a progressive debilitation leading to death, in the absence of infectious, nutritional, management or environmental factors. In this study, we present the first report of PFTS in South America and the results of a genome-wide association study to identify the genetic markers associated with the appearance of this condition in a crossbred swine population. Four chromosomal regions were associated with PFTS predisposition, one located on SSCX, one on SSC8, and the two other regions on SSC14. Regions on SSC8 and SSC14 harbour important functional candidate genes involved in human depression and might have an important role in PFTS. Our findings contribute to the increasing knowledge about this syndrome, which has been investigated since 2007, and to the identification of the aetiology of this disease.
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Affiliation(s)
- R Zanella
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
| | - N Morés
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
| | - M A Z Morés
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
| | - J O Peixoto
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
| | - E L Zanella
- R. Zanella's present address is College of Veterinary Medicine, University of Passo Fundo, Passo Fundo, RS, Brazil
| | - J R Ciacci-Zanella
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
| | - A M G Ibelli
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
| | - D Gava
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
| | - M E Cantão
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
| | - M C Ledur
- Embrapa Swine and Poultry National Research Center, Concordia, SC, Brazil
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Abstract
Concatenated reactions involved in the thermal activation process of the AuNPs/TiO2 system were evidenced by an in situ molecular spectroscopy study.
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Affiliation(s)
- S. R. Islas
- Centro de Ciencias Aplicadas y Desarrollo Tecnológico (CCADET)
- Universidad Nacional Autónoma de México
- 04510 México D. F
- Mexico
| | - R. Zanella
- Centro de Ciencias Aplicadas y Desarrollo Tecnológico (CCADET)
- Universidad Nacional Autónoma de México
- 04510 México D. F
- Mexico
| | - J. M. Saniger
- Centro de Ciencias Aplicadas y Desarrollo Tecnológico (CCADET)
- Universidad Nacional Autónoma de México
- 04510 México D. F
- Mexico
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17
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Pértille F, Zanella R, Felício AM, Ledur MC, Peixoto JO, Coutinho LL. Identification of polymorphisms associated with production traits on chicken (Gallus gallus) chromosome 4. Genet Mol Res 2015; 14:10717-28. [PMID: 26400301 DOI: 10.4238/2015.september.9.11] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Genetic selection for production traits has resulted in a rapid improvement in animal performance and development. Previous studies have mapped quantitative trait loci for body weight at 35 and 41 days, and drum and thigh yield, onto chicken chromosome 4. We investigated this region for single nucleotide polymorphisms and their associations with important economic traits. Three positional candidate genes were studied: KLF3 (Krüeppel-like factor 3), SLIT2 (Slit homolog 2), and PPARGC1A (peroxisome proliferator-activated receptor gamma, coactivator 1 alpha). Fragment sequencing of these genes was conducted in 11 F1 animals, and one polymorphism in each gene was selected and genotyped in an F2 population (N = 276) and a paternal broiler line TT (N = 840). Associations were identified with growth, carcass, and fat traits in the F2 and the paternal line (P < 0.05). Using single markers in both the F2 and the TT line, KLF3 was associated with weight gain (P < 0.05), PPPARGC1A was associated with liver and wing-parts weights and yields (P < 0.05), and SLIT2 was associated with back yield (P < 0.05) and fat traits (P < 0.05). Using multiple markers, KLF3 lost its significance in both populations, and SLIT2 was associated with feed conversion only in the TT population (P < 0.05). The QTLs mapped in the F2 population could be partly explained by PPARGC1A and SLIT2, which were associated with body weight at 35 and 41 days, respectively, and with drum and thigh yield in the same population. The results of this study indicate the importance of these genes for production traits.
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Affiliation(s)
- F Pértille
- Labortório de Biotecnologia Animal, Departamento de Zootecnia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brasil
| | - R Zanella
- Embrapa Suínos e Aves, Concórdia, SC, Brasil
| | - A M Felício
- Labortório de Biotecnologia Animal, Departamento de Zootecnia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brasil
| | - M C Ledur
- Embrapa Suínos e Aves, Concórdia, SC, Brasil
| | - J O Peixoto
- Embrapa Suínos e Aves, Concórdia, SC, Brasil
| | - L L Coutinho
- Labortório de Biotecnologia Animal, Departamento de Zootecnia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brasil
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Fagundes M, Gonçalves M, Soares M, Martins M, Zanella R, Riet-Correa F, Anjos B. Clinicopathological and toxicological aspects of poisoning by the clomazone herbicide in sheep. Small Rumin Res 2015. [DOI: 10.1016/j.smallrumres.2015.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hernández-Gordillo A, Arroyo M, Zanella R, Rodríguez-González V. Photoconversion of 4-nitrophenol in the presence of hydrazine with AgNPs-TiO2 nanoparticles prepared by the sol-gel method. J Hazard Mater 2014; 268:84-91. [PMID: 24468530 DOI: 10.1016/j.jhazmat.2013.12.069] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [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: 09/20/2013] [Revised: 12/20/2013] [Accepted: 12/23/2013] [Indexed: 05/27/2023]
Abstract
The photocatalytic properties of functionalized TiO2 with silver nanoparticles (AgNPs) for the conversion of 4-nitrophenol to 4-aminophenol in the presence of hydrazine were investigated. The TiO2 semiconductor synthesized by the sol-gel method was functionalized with AgNPs at different loadings, and their structural and optical properties were characterized by several techniques. The functionalized TiO2 with 1.5wt% AgNPs presented the highest photocatalytic activity for the conversion of 4-nitrophenol with appropriate hydrazine concentrations (0.5M). The photoefficiency enhancement under UV light irradiation was attributed to the electron transfer from the TiO2 semiconductor surface to the adsorbed acceptor reactant (4-nitrophenol) through the deposited AgNPs.
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Affiliation(s)
- Agileo Hernández-Gordillo
- División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica, Camino a la Presa San José 2055 Col. Lomas 4a. sección, C.P. 78216 San Luis Potosí, SLP, México; CIIEMAD, Instituto Politécnico Nacional, Calle 30 de Junio de 1520 s/n, Barrio la Laguna Ticomán, C.P. 07340, Del. Gustavo A. Madero, DF, México.
| | - Missael Arroyo
- División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica, Camino a la Presa San José 2055 Col. Lomas 4a. sección, C.P. 78216 San Luis Potosí, SLP, México
| | - R Zanella
- Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, A.P. 70-186, Delegación Coyoacán, C.P. 04510 México, DF, México
| | - V Rodríguez-González
- División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica, Camino a la Presa San José 2055 Col. Lomas 4a. sección, C.P. 78216 San Luis Potosí, SLP, México
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20
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Zanella R, Zanghirati G, Cavicchioli R, Zanni L, Boccacci P, Bertero M, Vicidomini G. Towards real-time image deconvolution: application to confocal and STED microscopy. Sci Rep 2014; 3:2523. [PMID: 23982127 PMCID: PMC3755287 DOI: 10.1038/srep02523] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [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: 05/28/2013] [Accepted: 08/08/2013] [Indexed: 01/28/2023] Open
Abstract
Although deconvolution can improve the quality of any type of microscope, the high computational time required has so far limited its massive spreading. Here we demonstrate the ability of the scaled-gradient-projection (SGP) method to provide accelerated versions of the most used algorithms in microscopy. To achieve further increases in efficiency, we also consider implementations on graphic processing units (GPUs). We test the proposed algorithms both on synthetic and real data of confocal and STED microscopy. Combining the SGP method with the GPU implementation we achieve a speed-up factor from about a factor 25 to 690 (with respect the conventional algorithm). The excellent results obtained on STED microscopy images demonstrate the synergy between super-resolution techniques and image-deconvolution. Further, the real-time processing allows conserving one of the most important property of STED microscopy, i.e the ability to provide fast sub-diffraction resolution recordings.
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Affiliation(s)
- R Zanella
- Laboratorio delle Tecnologie per Terapie Avanzate, Università di Ferrara, Ferrara, Italy
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21
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Scraggs E, Zanella R, Wojtowicz A, Taylor JF, Gaskins CT, Reeves JJ, de Avila JM, Neibergs HL. Estimation of inbreeding and effective population size of full-blood Wagyu cattle registered with the American Wagyu Cattle Association. J Anim Breed Genet 2013; 131:3-10. [PMID: 24373025 DOI: 10.1111/jbg.12066] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [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: 06/27/2013] [Accepted: 11/07/2013] [Indexed: 11/29/2022]
Abstract
The objective of this research was to examine the population structure of full-blood (100%) Wagyu cattle registered in the United States with the American Wagyu Association, with the aim of estimating and comparing the levels of inbreeding from both pedigree and genotypic data. A total of 4132 full-blood Wagyu cattle pedigrees were assessed and used to compute the inbreeding coefficients (FIT and FST ) and the effective population size (Ne ) from pedigree data for the period 1994 to 2011. In addition to pedigree analysis, 47 full-blood Wagyu cattle representing eight prominent sire lines in the American Wagyu cattle population were genotyped using the Illumina BovineSNP50 BeadChip. Genotypic data were then used to estimate genomic inbreeding coefficients (FROH ) by calculating runs of homozygosity. The mean inbreeding coefficient based on the pedigree data was estimated at 4.80%. The effective population size averaged 17 between the years 1994 and 2011 with an increase of 42.9 in 2000 and a drop of 1.8 in 2011. Examination of the runs of homozygosity revealed that the 47 Wagyu cattle from the eight prominent sire lines had a mean genomic inbreeding coefficient (FROH ) estimated at 9.08% compared to a mean inbreeding coefficient based on pedigree data of 4.8%. These data suggest that the mean genotype inbreeding coefficient of full-blood Wagyu cattle exceeds the inbreeding coefficient identified by pedigree. Inbreeding has increased slowly at a rate of 0.03% per year over the past 17 years. Wagyu breeders should continue to utilize many sires from divergent lines and consider outcrossing to other breeds to enhance genetic diversity and minimize the adverse effects of inbreeding in Wagyu.
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Affiliation(s)
- E Scraggs
- Department of Animal Sciences, Washington State University, Pullman, WA, USA
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Petrova P, Tabakova T, Munteanu G, Zanella R, Tsvetkov M, Ilieva L. Gold catalysts on Co-doped ceria for complete benzene oxidation: Relationship between reducibility and catalytic activity. CATAL COMMUN 2013. [DOI: 10.1016/j.catcom.2013.03.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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23
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Tabakova T, Dimitrov D, Manzoli M, Vindigni F, Petrova P, Ilieva L, Zanella R, Ivanov K. Impact of metal doping on the activity of Au/CeO2 catalysts for catalytic abatement of VOCs and CO in waste gases. CATAL COMMUN 2013. [DOI: 10.1016/j.catcom.2013.01.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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24
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Vázquez-Cuchillo O, Manzo-Robledo A, Zanella R, Elizondo-Villareal N, Cruz-López A. Characterization of NaTaO3 synthesized by ultrasonic method. Ultrason Sonochem 2013; 20:498-501. [PMID: 22981167 DOI: 10.1016/j.ultsonch.2012.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2010] [Revised: 12/14/2011] [Accepted: 08/01/2012] [Indexed: 06/01/2023]
Abstract
NaTaO(3) perovskite-like materials were synthesized using sodium acetate and tantalum ethoxide as precursors in an ultrasonic bath at room temperature. The pristine sample was thermally treated at 600 °C and characterized using XRD, N(2) physisorption, DRS, SEM and TEM techniques. The structural characterization by X-ray powder diffraction revealed that the crystallization of the NaTaO(3) phase prepared at 600 °C showed agglomerates sizes in the micrometric scale, as confirmed by scanning electron microscopy (SEM). On the other hand, well-defined NaTaO(3) particles in the nanometric scale were determined using TEM. It was found that, for the treated sample, the band gap and BET area was 3.8 eV and 9.5m(2) g(-1), respectively. The annealed perovskite, deposited onto ITO glass, presented an important variation in the open circuit potential transient during UV light irradiation in neutral solution, compared with its counterpart prepared by solid-state method. These intrinsic properties, given by the preparation route, might be appropriate for increase its photocatalytic activity.
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Affiliation(s)
- O Vázquez-Cuchillo
- Universidad Autónoma de Nuevo León, Facultad de Ingeniería Civil, Av Universidad y Av Fidel Velázquez S/N, Cd Universitaria, San Nicolás de los Garza, Nuevo León 66451, Mexico
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25
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Ilieva L, Petrova P, Tabakova T, Zanella R, Abrashev M, Sobczak J, Lisowski W, Kaszkur Z, Andreeva D. Relationship between structural properties and activity in complete benzene oxidation over Au/CeO2–CoOx catalysts. Catal Today 2012. [DOI: 10.1016/j.cattod.2012.03.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [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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26
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Zanella R, Whitlock RH, Neibergs HL. Short communication: refinement of genetic regions associated with Mycobacterium avium subspecies paratuberculosis tissue infection and tolerance to Johne's disease. J Dairy Sci 2011; 94:4230-6. [PMID: 21787960 DOI: 10.3168/jds.2011-4192] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Accepted: 04/19/2011] [Indexed: 02/01/2023]
Abstract
Johne's disease is a highly transmissible bacterial disease caused by Mycobacterium avium ssp. paratuberculosis (MAP). The objective of this study was to refine the locus associated with MAP tissue infection and the locus associated with tolerance to Johne's disease. Using a genome-wide association analysis, single nucleotide polymorphisms associated with MAP tissue infection and tolerance to Johne's disease on Bos taurus autosome (BTA)3 and BTA15, respectively, have previously been identified. A 235-kb region on BTA3 was evaluated with 42 single nucleotide polymorphisms, and a 193-kb region on BTA15 was evaluated with 54 single nucleotide polymorphisms in a group of 209 Holstein cows. Using a single marker association analysis and haplotype tests, we refined a region of 10.6 kb on BTA3 as being associated with MAP tissue infection and a region of 6.5 kb on BTA15 as being associated with tolerance to Johne's disease.
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Affiliation(s)
- R Zanella
- Department of Animal Sciences, Washington State University, Pullman, Washington 99164-6353, USA
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Reckziegel P, Boufleur N, Barcelos RCS, Benvegnú DM, Pase CS, Muller LG, Teixeira AM, Zanella R, Prado ACP, Fett R, Block JM, Burger ME. Oxidative stress and anxiety-like symptoms related to withdrawal of passive cigarette smoke in mice: beneficial effects of pecan nut shells extract, a by-product of the nut industry. Ecotoxicol Environ Saf 2011; 74:1770-8. [PMID: 21531023 DOI: 10.1016/j.ecoenv.2011.04.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2010] [Revised: 04/13/2011] [Accepted: 04/16/2011] [Indexed: 05/12/2023]
Abstract
The present study evaluated the role of pecan nut (Carya illinoensis) shells aqueous extract (AE) against oxidative damage induced by cigarette smoke exposure (CSE) and behavioral parameters of smoking withdrawal. Mice were passively exposed to cigarette smoke for 3 weeks (6, 10, and 14 cigarettes/day) and orally treated with AE (25 g/L). CSE induced lipid peroxidation in brain and red blood cells (RBC), increased catalase (CAT) activity in RBC, and decreased plasma ascorbic acid levels. AE prevented oxidative damage and increased antioxidant defenses of mice exposed to cigarette smoke. In addition, AE reduced the locomotor activity and anxiety symptoms induced by smoking withdrawal, and these behavioral parameters showed a positive correlation with RBC lipid peroxidation. Our results showed the beneficial effects of this by-product of the pecan industry, indicating its usefulness in smoking cessation.
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Affiliation(s)
- P Reckziegel
- Programa de Pós-Graduação em Farmacologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria (UFSM), RS, 97105-900, Brazil
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Zanella R, Settles ML, McKay SD, Schnabel R, Taylor J, Whitlock RH, Schukken Y, Van Kessel JS, Smith JM, Neibergs HL. Identification of loci associated with tolerance to Johne's disease in Holstein cattle. Anim Genet 2011; 42:28-38. [PMID: 20477805 DOI: 10.1111/j.1365-2052.2010.02076.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Johne's disease, caused by Mycobacterium avium subspecies paratuberculosis (Map), is a fatal disease in cattle. The objective of this study was to identify loci associated with tolerance in cows infected with Map. Tolerance was defined as a cow's fitness at a given level of Map infection intensity. Fitness was measured by Map faecal cultures, and Map infection intensity was measured by culturing four gut tissues. The quantitative phenotype of tolerance was defined by numerical indexes of cultures of peak (peak tolerance, PT) and average (average tolerance, AT) faecal and tissue Map from 245 Holstein cows. The categorical phenotype was defined as: ≥ 100 cfu Map tissue infection, and faecal shedding ≥ 75 cfu (intolerant) or <10 cfu (tolerant cows). In 94 cows, Map was identified in ≥ 1 tissue, including 44 cows with ≥ 100 Map tissue cfu and 36 with ≥ 1 faecal cfu. A genome-wide association analysis was performed after filtering, leaving genotypes for 45,789 SNPs in 90 animals for the quantitative phenotype and 16 cases and 25 controls for the categorical analysis of tolerance. rs41748405:A>C (BTA15) was associated with PT (P = 1.12 × 10(-7)) and AT (P = 2.17 × 10(-6)). Associations were identified with PT and adjacent SNPs ss61512613:A>G and ss61530518:A>G (BTA6) (P < 3.0 × 10(-5)), and with AT for ss61469568:A>G (BTA 2) (P = 3.3 × 10(-5)) and ss86284768:A>G (BTA1) (P = 3.31 × 10(-5)). For the categorical phenotype, an association was found with ss8632653:A>G (BTA6) (P < 5.0 × 10(-5)). This is the first study to identify loci associated with tolerance to Johne's disease.
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Affiliation(s)
- R Zanella
- Department of Animal Sciences, Washington State University, ASLB 210, Pullman, WA 99164, USA
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Neibergs H, Zanella R, Casas E, Snowder GD, Wenz J, Neibergs JS, Moore D. Loci on Bos taurus chromosome 2 and Bos taurus chromosome 26 are linked with bovine respiratory disease and associated with persistent infection of bovine viral diarrhea virus. J Anim Sci 2010; 89:907-15. [PMID: 21148784 DOI: 10.2527/jas.2010-3330] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The objective of this study was to identify loci linked with bovine respiratory disease (BRD) and subsequently to determine if these same loci were associated with bovine viral diarrhea virus persistent infection (BVD-PI) in affected calves or their dams. A genome-wide linkage study using 312 microsatellites was conducted to identify loci linked with BRD in a Brahman × Hereford sire half-sib family. Disease incidence was recorded from birth to slaughter by daily monitoring. Linkage was suggestive for a QTL on BTA2 (F = 7.31, P = 0.007) and BTA26 (F = 10.46, P = 0.001). Six and 7 markers were added and genotyped between 110 and 126 cM on BTA2 and between 42 and 72 cM on BTA26, respectively, in the intervals where linkage was found. These markers were used to reevaluate the Brahman × Hereford family and to evaluate 3 additional crossbred half-sib families. Linkage was found with BRD on BTA2 (F = 4.94, P < 0.01), with a peak at 110 cM, and on BTA26 (F = 4.03, P < 0.05), with peaks at 42 and 52 cM. The same markers were then tested for an association with BVD-PI in 1) BVD-PI calves compared with age-matched unaffected calves from the same herd or 2) dams with BVD-PI compared with age-matched unaffected calves. Sixty commercial beef cow-calf herds were tested for BVD-PI, and 79 calves from 8 ranches had BVD-PI. Four of 6 markers were associated (P = 4.8 × 10(-9) to P = 0.01) with BVD-PI on BTA2, and 4 of 7 markers were associated (P = 0.008 to P = 0.04) with BVD-PI on BTA26 when BVD-PI calves were compared with unaffected calves. The comparison of BVD-PI dams with unaffected calves detected associations with BVD-PI for all markers tested on BTA2 (P = 3 × 10(-9) to P = 0.005) and for 3 of 7 markers on BTA26 (P = 1.4 × 10(-6) to P = 0.006).
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Affiliation(s)
- H Neibergs
- Department of Animal Sciences, Washington State University, Pullman 99164, USA.
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Settles M, Zanella R, McKay SD, Schnabel RD, Taylor JF, Whitlock R, Schukken Y, Van Kessel JS, Smith JM, Neibergs H. A whole genome association analysis identifies loci associated with Mycobacterium avium subsp. paratuberculosis infection status in US holstein cattle. Anim Genet 2009; 40:655-62. [PMID: 19422364 DOI: 10.1111/j.1365-2052.2009.01896.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The purpose of this study was to identify loci associated with Mycobacterium avium subspecies paratuberculosis (Map) infection status in US Holsteins using the Illumina BovineSNP50 BeadChip whole genome single nucleotide polymorphism (SNP) assay. Two hundred forty-five cows from dairies in New York, Pennsylvania and Vermont enrolled in longitudinal herd studies between January 1999 and November 2007 were assessed for the presence of Map in both faecal and tissue samples. An animal was considered tissue infected if any sample contained at least one colony forming unit of Map per gram of tissue (CFU/g) and the same definition was employed for faecal samples. Each animal was genotyped with the Illumina BovineSNP50 BeadChip and after quality assurance filtering, 218 animals and 45 683 SNPs remained. We sought to identify loci associated with four different case/control classifications: presence of Map in the tissue, presence of Map in faeces, presence of Map in both tissue and faeces and presence of Map in tissue but not faeces. A case-control genome wide association study was conducted to test the four different classifications of Map infection status (cases) when compared with a Map-negative control group (control). Regions on chromosomes 1, 5, 7, 8, 16, 21 and 23 were identified with moderate significance (P < 5 x 10(-5)). Two regions, one on chromosome 3 (near EDN2) and another on chromosome 9 (no positional gene candidates), were identified with a high level of association to the presence of Map in tissue and both tissue and faeces respectively (P < 5 x 10(-7), genome-wide Bonferonni P < 0.05).
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Affiliation(s)
- M Settles
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
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31
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Kolberg DIS, Presta MA, Wickert C, Adaime MB, Zanella R. Rapid and accurate simultaneous determination of abamectin and ivermectin in bovine milk by high performance liquid chromatography with fluorescence detection. J BRAZIL CHEM SOC 2009. [DOI: 10.1590/s0103-50532009000700004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Telló M, Oliveira L, Parise O, Buzaid AC, Oliveira RT, Zanella R, Cardona A. Electrochemical therapy to treat cancer (in vivo treatment). ACTA ACUST UNITED AC 2008; 2007:3524-7. [PMID: 18002757 DOI: 10.1109/iembs.2007.4353091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The aim of this paper is to present the evaluations and results attained by our research group from the clinical applications of Electrochemical Therapy (EChT in short) on tumors, specifically of cats and dogs. Our in vivo results indicate that EChT is an effective cancer treatment. Application of EChT in human beings was approved by National Health Surveillance Agency, which is linked to the Brazilian Ministry of Health. To make EChT available for cancer patients in the Brazil, basic studies were conducted and a Phase I clinical trial was started.
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Zanella R, Primel EG, Kurz MHS, Gonçalves FF. FLOW INJECTION SPECTROPHOTOMETRIC DETERMINATION OF PROPOXUR WITH DIAZOTIZED 4-AMINOBENZOIC ACID. ANAL LETT 2007. [DOI: 10.1081/al-120004558] [Citation(s) in RCA: 5] [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: 11/03/2022]
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Cedeño L, Zanella R, Ramírez J, Mendoza H, Hernández G, Schacht P. Synthesis and characterization of Ce-stabilized titania for NiMo HDS catalysts. Catal Today 2004. [DOI: 10.1016/j.cattod.2004.07.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zanella R. Characterization and reactivity in CO oxidation of gold nanoparticles supported on TiO2 prepared by deposition-precipitation with NaOH and urea. J Catal 2004. [DOI: 10.1016/j.jcat.2003.11.005] [Citation(s) in RCA: 305] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zanella R, Primel EG, Machado SLO, Gonçalves FF, Marchezan E. Monitoring of the herbicide clomazone in environmental water samples by solid-phase extraction and high-performance liquid chromatography with ultraviolet detection. Chromatographia 2002. [DOI: 10.1007/bf02492903] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zanella R, Primel EG, Gonçalves FF, Martins AF. Development and validation of a high-performance liquid chromatographic method for the determination of clomazone residues in surface water. J Chromatogr A 2000; 904:257-62. [PMID: 11204239 DOI: 10.1016/s0021-9673(00)00912-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A method is described for the determination of clomazone residues in surface water by high-performance liquid chromatography with UV detection. The method involves solid-phase extraction with C18 extraction tubes. Clomazone was separated on a C18 column with a mobile phase of methanol-water (65:35, v/v) at pH 4.0 and a flow-rate of 1.0 ml/min. After optimization of the extraction and separation conditions, the method was validated. The method developed can be used for determination of clomazone in surface water, at the limit of 0.1 mcirog/l set by the European Union drinking water directive, with a 400-fold preconcentration.
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Affiliation(s)
- R Zanella
- Departamento de Química, Universidade Federal de Santa Maria, RS, Brazil
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40
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Zanella R, Schilling M, Klockow D. Determination of acrylic acid in air by using diffusion denuder tubes combined with HPLC technique. J Environ Monit 1999; 1:441-3. [PMID: 11529161 DOI: 10.1039/a904577e] [Citation(s) in RCA: 3] [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] [Indexed: 11/21/2022]
Abstract
A procedure for the determination of atmospheric acrylic acid in air at the microgram m-3 to mg m-3 level is described. Diffusion-based sampling, designed to discriminate gaseous analytes from their particulate counterparts, has been used. Acrylic acid is collected with an efficiency of > 98% in tubular denuders coated with sodium hydroxide-barium hydroxide-hydroquinone monomethyl ether, and analyzed by high performance liquid chromatography with UV absorbance detection. The detection limit is 2.9 micrograms m-3 at a flow rate of 0.5 L min-1 and 30 min sampling time. A precision (p = 0.95, n = 10) of 7.5% of the overall procedure was achieved at the 100 micrograms m-3 level. Results of laboratory studies concerning the effect of the coating reagent and the relative humidity on the sampling efficiency as well as possible interferences, in particular by ozone, and the elimination of these interferences are discussed. This method was developed to monitor workplace atmospheres as well as ambient air in industrial environments.
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Affiliation(s)
- R Zanella
- ISAS-Institut für Spektrochemie und Angewandte Spektroskopie, Bunsen-Kirchhoff-Str. 11, D-44139 Dortmund, Germany
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41
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Zanella R, Dallago RM, Flores EMM, Martins AF. Flow Injection Spectrophotometric Determination of Carbofuran in Commercial Pesticides Formulations. ANAL LETT 1999. [DOI: 10.1080/00032719908542841] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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42
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Pavan FA, Dallago RM, Zanella R, Martins AF. Determination of deltamethrin in cattle dipping baths by high-performance liquid chromatography. J Agric Food Chem 1999; 47:174-176. [PMID: 10563868 DOI: 10.1021/jf980171b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Deltamethrin (S)-alpha-cyano-3-phenoxybenzyl) (1R,3R)-3-(2, 2-dibromovinyl)-2,2-dimethylcyclopropane-1-carboxylate is classified as a pyrethroid pesticide that is largely used as an acaricide and scabicide. For bovines, especially, the treatment is done with the aid of dipping baths of the pyrethroid solution. Analytical control of the concentration of deltamethrin in these baths must be done periodically in order to guarantee treatment efficacy. In the proposed procedure, the sample is prepared by centrifugation followed by filtration and measurement by high-performance liquid chromatography (HPLC) with spectrophotometric detection at 275 nm. Separation is done in a Nucleosil C-18 column with acetonitrile-water as the mobile phase. A calibration curve was constructed with external standards, and a detection limit of 0.2 mg L(-)(1) was obtained. In the samples analyzed, only ca. 20% of the total deltamethrin content was found in the solution. The results obtained demonstrate the potential of the described procedure for the determination of deltamethrin in animal baths.
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Affiliation(s)
- F A Pavan
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brasil
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Abstract
A patient presented left-sided apraxia, constructional disturbances with the right hand and left tactile anomia after a severe head injury. MRI showed a callosal lesion involving the middle and posterior third of the truncus. This finding supports the thesis that the posterior callosum plays a predominant role in the interhemispheric mediation for praxis, as well as in the right-left transfer of spatial information guiding constructional performance. Left-sided apraxia was evident on imitation, on verbal command and on visual presentation of an object, but not on tactual presentation and during the actual use of objects. Moreover, apraxia on imitation showed a more rapid recovery than apraxia on verbal command. These data are consistent with the hypothesis of a left-hemisphere dominance for praxis, which is almost absolute when the retrieval of the appropriate gesture requires a semantic analysis of the stimulus.
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Affiliation(s)
- P Boldrini
- Sezione di Recupero e Rieducazione Funzionale, USL 31, Ferrara
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44
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46
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48
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