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Anthelmintic activity of nanoencapsulated carvacryl acetate against gastrointestinal nematodes of sheep and its toxicity in rodents. Repositório Alice
ANDRÉ, W. P. P.; PAIVA JUNIOR, J. R. de; CAVALCANTE, G. S.; RIBEIRO, W. L. C.; ARAÚJO FILHO, J. V. de; SANTOS, J. M. L. dos; ALVES, A. P. N. N.; MONTEIRO, J. P.; MORAIS, S. M. de; SILVA, I. N. G. da; OLIVEIRA, L. M. B. de; ABREU, F. O. M. da S.; BEVILAQUA, C. M. L..
Abstract: The objective of this study was to evaluate the efficacy of carvacryl acetate (CVA) and nanoencapsulated CVA (nCVA) on gastrointestinal nematodes of sheep. The CVA was nanoencapsulated with chitosan/gum arabic and the efficacy of nanoencapsulation (EE), yield, zeta potential, nanoparticle morphology and release kinetics at pH 3 and 8 were analyzed. Acute and subchronic toxicity were evaluated in rodents and reduction of egg counts in the faeces (FECRT) of sheep. The sheep were divided into four groups (n = 10): G1, 250 mg/kg CVA; G2, 250 mg/kg nCVA; G3, polymer matrix and G4: 2.5 mg/kg monepantel. EE and nCVA yield were 65% and 57%, respectively. The morphology of the nanoparticles was spherical, size (810.6±286.7 nm), zeta potential in pH 3.2...
Tipo: Artigo de periódico Palavras-chave: Quitosana; Biocompostos; Acetilação; Nematoide gastrintestinal; Acetato de carvacrila; Segurança toxicológica; Biocompounds; Toxicological safety; Gastrointestinal parasitic nematodes; Ovino; Haemonchus Contortus; Helminto Gastrintestinal; Goma Arábica; Anti-Helmíntico; Parasitose; Chitosan; Gum arabic; Acetylation; Nematode control; Essential oils; Bioactive compounds.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125192
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Functional characterization of acetylated Brazil nut (Bertholletia excelsa HBK) kernel globulin Ciênc. Tecnol. Aliment.
Ramos,Cíntia Maria Pinto; Bora,Pushkar Singh.
Defatted Brazil nut kernel flour, a rich source of high quality proteins, is presently being utilized in the formulation of animal feeds. One of the possible ways to improve its utilization for human consumption is through improvement in its functional properties. In the present study, changes in some of the functional properties of Brazil nut kernel globulin were evaluated after acetylation at 58.6, 66.2 and 75.3% levels. The solubility of acetylated globulin was improved above pH 6.0 but was reduced in the pH range of 3.0-4.0. Water and oil absorption capacity, as well as the viscosity increased with increase in the level of acetylation. Level of modification also influenced the emulsifying capacity: decreased at pH 3.0, but increased at pH 7.0 and 9.0....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil nut kernel globulin; Chemical modification; Acetylation; And functional properties.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612004000100024
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Metal chloride-catalyzed acetylation of starch: Synthesis and characterization. Repositório Alice
BISWAS, A.; KIM, S.; FURTADO, R. F.; ALVES, C. R.; BETTRUM, M.; BODDU, V.; CHENG, H. N..
Tipo: Artigo de periódico Palavras-chave: Amido; Acetylation; Esterification; Lewis acids; Starch.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1102619
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Microtubule polyglutamylation and acetylation drive microtubule dynamics critical for platelet formation ArchiMer
Van Dijk, Juliette; Bompard, Guillaume; Cau, Julien; Kunishima, Shinji; Rabeharivelo, Gabriel; Mateos-langerak, Julio; Cazevieille, Chantal; Cavelier, Patricia; Boizet-bonhoure, Brigitte; Delsert, Claude; Morin, Nathalie.
Background Upon maturation in the bone marrow, polyploid megakaryocytes elongate very long and thin cytoplasmic branches called proplatelets. Proplatelets enter the sinusoids blood vessels in which platelets are ultimately released. Microtubule dynamics, bundling, sliding, and coiling, drive these dramatic morphological changes whose regulation remains poorly understood. Microtubule properties are defined by tubulin isotype composition and post-translational modification patterns. It remains unknown whether microtubule post-translational modifications occur in proplatelets and if so, whether they contribute to platelet formation. Results Here, we show that in proplatelets from mouse megakaryocytes, microtubules are both acetylated and polyglutamylated. To...
Tipo: Text Palavras-chave: Microtubules; Acetylation; Polyglutamylation; Tubulin isotype; Platelets; Megakaryocytes; IIb3 integrin; CHO cells.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00463/57463/59577.pdf
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PAK1 Regulates MEC-17 Acetyltransferase Activity and Microtubule Acetylation during Proplatelet Extension ArchiMer
Van Dijk, Juliette; Bompard, Guillaume; Rabeharivelo, Gabriel; Cau, Julien; Delsert, Claude; Morin, Nathalie.
Mature megakaryocytes extend long processes called proplatelets from which platelets are released in the blood stream. The Rho GTPases Cdc42 and Rac as well as their downstream target, p21-activated kinase 2 (PAK2), have been demonstrated to be important for platelet formation. Here we address the role, during platelet formation, of PAK1, another target of the Rho GTPases. PAK1 decorates the bundled microtubules (MTs) of megakaryocyte proplatelets. Using a validated cell model which recapitulates proplatelet formation, elongation and platelet release, we show that lack of PAK1 activity increases the number of proplatelets but restrains their elongation. Moreover, in the absence of PAK1 activity, cells have hyperacetylated MTs and lose their MT network...
Tipo: Text Palavras-chave: Microtubules; Acetylation; Megakaryocytes; Proplatelet; P21-activated kinase 1 PAK1; Acetyltransferase MEC-17.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00654/76594/77743.pdf
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