Consulta: subjectFacets:"Ricin"
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Data/hora: 11/06/2024 01:34:00

Analysis of castor bean ribosome-inactivating proteins and their gene expression during seed development
Provedor de dados: Genetics and Molecular Biology
Autores: Loss-Morais,Guilherme; Turchetto-Zolet,Andreia Carina; Etges,Matheus; Cagliari,Alexandro; Körbes,Ana Paula; Maraschin,Felipe dos Santos; Margis-Pinheiro,Márcia; Margis,Rogério.
Ribosome-inactivating proteins (RIPs) are enzymes that inhibit protein synthesis after depurination of a specific adenine in rRNA. The RIP family members are classified as type I RIPs that contain an RNA-N-glycosidase domain and type II RIPs that contain a lectin domain (B chain) in addition to the glycosidase domain (A chain). In this work, we identified 30 new plant RIPs and characterized 18 Ricinus communis RIPs. Phylogenetic and functional divergence analyses indicated that the emergence of type I and II RIPs probably occurred before the monocot/eudicot split. We also report the expression profiles of 18 castor bean genes, including those for ricin and agglutinin, in five seed stages as assessed by quantitative PCR. Ricin and agglutinin were the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agglutinin; Evolution; Lipase; Ricinus communis; Ricin; RIPs.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000100011

Small synthetic peptides inhibit, in mice, the lethalithy of toxins derived from animal, plant and bacteria
Provedor de dados: Journal of Venomous Animals and Toxins
Autores: LIPPS,B. V.
Lethal Toxin Neutralizing Factor (LTNF), isolated from opossum with having molecular weight 63 kDa, is a potent antidote for animal, plant, and bacterial toxins. This communication deals with the identification of a small fragment of LTNF eliciting the anti-lethal activity of animal, plant, and bacterial toxins when tested in mice. Purified LTNF was treated with trypsin to cause fragmentation at the arginine and lysine sites. The fragments were separated by high-performance liquid chromatography (HPLC) and were tested against anti-LTNF for binding affinity by enzyme-linked immunosorbent test (ELISA). The fragment showing the most binding to anti-LTNF was sequenced. Synthetic peptides consisting of 15 and 10 amino acids from the N-terminal were constructed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lethal Toxin Neutralizing Factor (LTNF); Opossum; Crotalus atrox; Naja kaouthia; Daboia russelli; Oxyuranus s. scutellatus; Androcetonus australis; Apis mellifera; Ricin; Ricinus communis; Botulinum; Clostridium botulinum.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000100005

Productive performance and efficiency of utilization of the diet components in dairy cows fed castor meal treated with calcium oxide
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Cobianchi,Juliana Variz; Oliveira,André Soares de; Campos,José Maurício de Souza; Guimarães,Amanda Vasconcelos; Valadares Filho,Sebastião de Campos; Cobianchi,Flávio Pereira; Oliveira,Thalita Evani Silva de.
The effect of replacing of 0; 0.33; 0.67 and 1.0 (kg/kg) of soybean meal (SBM) by undecorticated castor seed meal treated with calcium oxide (CMT - 60 g/kg) was evaluated on performance and efficiency of nutrient utilization in dairy cows. Sixteen Holstein and crossbred cows were distributed in four 4 × 4 latin squares. Animals received concentrated feed at a ratio of 1 kg for 3 kg of milk produced, in the natural matter. The diets had the same amount of nitrogen (150.4 g crude protein/kg DM), containing 325.6 g of concentrated feed/kg DM. There was no effect on the serum concentration of transaminase and the animals showed no clinical symptoms of intoxication by ricin. The intake of DM, crude protein (CP) and non-fibrous carbohydrates (NFC) reduced from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Intake; Milk production; Nitrogenous compounds; Ricin; Ricinus communis L.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000015

Intake, digestibility and nitrogen balance in sheep fed diets containing detoxified castor cake
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Furtado,Rafael Nogueira; Pompeu,Roberto Cláudio Fernandes Franco; Cândido,Magno José Duarte; Pereira,Elzânia Sales; Lopes,Marcos Neves; Rogério,Marcos Cláudio Pinheiro.
ABSTRACT The effect of substituting soybean meal (SM) with four levels (0, 33, 67 and 100%) of detoxified castor cake (DCC) on intake, nutrient digestibility and nitrogen balance was evaluated in uncastrated, male, crossbred sheep in a randomised complete block design with four treatments and five replications. There was a decreasing linear effect from the levels of substitution on dry matter (DM), organic matter (OM) and crude protein (CP) intake, total carbohydrates (TC), non-fibrous carbohydrates (NFC) and total digestible nutrients (TDN), and on DM, OM and TC digestibility, for reductions of 2.04, 1.70, 0.35, 1.56, 1.89 and 1.67 g dia-1 and 0.34, 0.53 and 0.51 g kg-1 DM respectively, for each 1% SM substituted with DCC. DMI and NDFap expressed, in %BW...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Detoxification; Ricin; Ricinus communis; Nutritional value.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100412

Simultaneous allergen inactivation and detoxification of castor bean cake by treatment with calcium compounds
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Fernandes,K.V.; Deus-de-Oliveira,N.; Godoy,M.G.; Guimarães,Z.A.S.; Nascimento,V.V.; Melo,E.J.T. de; Freire,D.M.G.; Dansa-Petretski,M.; Machado,O.L.T.
Ricinus communis L. is of great economic importance due to the oil extracted from its seeds. Castor oil has been used for pharmaceutical and industrial applications, as a lubricant or coating agent, as a component of plastic products, as a fungicide or in the synthesis of biodiesel fuels. After oil extraction, a castor cake with a large amount of protein is obtained. However, this by-product cannot be used as animal feed due to the presence of toxic (ricin) and allergenic (2S albumin) proteins. Here, we propose two processes for detoxification and allergen inactivation of the castor cake. In addition, we establish a biological test to detect ricin and validate these detoxification processes. In this test, Vero cells were treated with ricin, and cell death...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ricinus communis; 2S albumin; Ricin; Biodiesel fuel; Solid-state fermentation; Vero cell.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001100002