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| Registros recuperados: 29 | |
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| RODRÍGUEZ URQUIZA,Mayelín; GÓMEZ KOSKY,Rafael; MARTÍNEZ,Silvio de Jesús; PONS CORONA,Mileydi; PÉREZ PERALTA,Martha; LA ¨O¨ CÁRDENAS,Mariana; ROMERO QUINTANA,Carlos. |
| Existen varios protocolos de regeneración de plantas vía embriogénesis somática de Sorghum bicolor (L.) Moench, sin embargo los porcentajes de formación de callos con estructuras embriogénicas y regeneración de plantas son bajos. Es por ello que esta investigación tuvo como objetivo generar embriones somáticos en sorgo rojo variedad CIAP 132-R. Se ensayaron diferentes concentraciones de 2,4-D para la formación de callos, así como tres concentraciones de ácido ascórbico para eliminar la exudación de compuestos fenólicos por el explante. También para la formación de los embriones somáticos a partir de los callos se evaluaron diferentes concentraciones de 2,4-D y 6-BAP. El mayor porcentaje de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-Diclorofenoxiacético 6-Bencilaminopurina callos embriogénesis somática sorgo. |
| Ano: 2015 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000200023 |
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| Balagué,Claudia; Evangelista de Duffard,Ana María. |
| Existen algunos datos epidemiológicos que demuestran que, en poblaciones rurales, la frecuencia de lesiones inflamatorias de origen infeccioso en el riñón es mayor en individuos expuestos a pesticidas. Estudios previos han demostrado que el herbicida 2,4- D altera las propiedades de adherencia bacteriana a riñón, mediada por fimbrias de Escherichia coli uropatógena, si bien aún no se ha estudiado el mecanismo que podría estar involucrado. El 2,4-D demostró capacidad de generar uniones covalentes a proteínas de bacilos gram negativos. Debido a este hallazgo, se hipotetizó que la unión del herbicida a proteínas involucradas en la síntesis, exportación o ensamble de las subunidades fimbriales... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D Fimbrias Escherichia coli Infección urinaria. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432006000100004 |
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| CHIPOLINE,INGRID C.; ALVES,EVELYNE; BRANCO,PAOLA; COSTA-LOTUFO,LETICIA V.; FERREIRA,VITOR F.; SILVA,FERNANDO C. DA. |
| ABSTRACT The 1,2-naphthoquinone compound was previously considered active against solid tumors. Moreover, glycosidase inhibitors such as 1,2,3-1H triazoles has been pointed out as efficient compounds in anticancer activity studies. Thus, a series of eleven 1,2-naphthoquinones tethered in C2 to 1,2,3-1H-triazoles 9a-k were designed, synthesized and their cytotoxic activity evaluated using HCT-116 (colon adenocarcinoma), MCF-7 (breast adenocarcinoma) and RPE (human nontumor cell line from retinal epithelium). The chemical synthesis was performed from C-3 allylation of lawsone followed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Naphthoquinones lawsone 1; 2; 3-triazoles cancer colon adenocarcinoma breast adenocarcinoma. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000301027 |
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| Xia,Yu; Ye,Suzhen; Shi,Jian; Huang,Hanjin. |
| ABSTRACT This study aims to explore the relationship between the anxious symptoms and the impairment of 5-hydroxytryptamine system in PD mice induced by different dosages of MPTP. The mice from the three model groups, the low-dose, dose and high-dose group, took longer time in the dark box than those in the control group (P<0.05). However, no statistically significant differences were found among the model groups. The number of open arm entry (OE) and the open arm time (OT) were significant lower in the model group than those in the control group in the elevated plus-maze test (P＜0.05). The percentage of OE in modle group was significantly lower compared with the control group (P＜0.05). The concentrations of striatum DA, HVA, 5-HT, and 5-HIAA were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parkinson's disease 1-methyl-4-phenyl-1; 2; 3; 6-tetrahydroPyridine (MPTP) 5-hydroxytryptamine Dopamine Anxiety. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100315 |
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| Ferro,M.M.; Angelucci,M.E.M.; Anselmo-Franci,J.A.; Canteras,N.S.; Da Cunha,C.. |
| There is a great concern in the literature for the development of neuroprotectant drugs to treat Parkinson's disease. Since anesthetic drugs have hyperpolarizing properties, they can possibly act as neuroprotectants. In the present study, we have investigated the neuroprotective effect of a mixture of ketamine (85 mg/kg) and xylazine (3 mg/kg) (K/X) on the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) or 6-hydroxydopamine (6-OHDA) rat models of Parkinson's disease. The bilateral infusion of MPTP (100 µg/side) or 6-OHDA (10 µg/side) into the substantia nigra pars compacta of adult male Wistar rats under thiopental anesthesia caused a modest (~67%) or severe (~91%) loss of tyrosine hydroxylase-immunostained cells,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neuroprotection 6-Hydroxydopamine 1-Methyl-4-phenyl-1; 2; 3; 6- tetrahydropyridine Ketamine Parkinson's disease. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000100012 |
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| Han,Lizhen; Zhao,Degang; Li,Cuicui. |
| An indigenous bacterial strain capable of utilizing 2,4-dichlorophenoxyacetic acid as the sole carbon and energy source was isolated from a soil used for grown wheat with a long-term history of herbicide use in Beijing, China. The strain BJ71 was identified as Cupriavidus campinensis based on its 16S rRNA sequence analysis and morphological, physiological, and biochemical characteristics. The degradation characteristics of strain BJ71 were evaluated. The optimal conditions for 2,4-D degradation were as follows: pH 7.0, 30 °C, 3% (v/v) inoculum size, and an initial 2,4-D concentration of 350 mg L−1. Up to 99.57% of the |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D-degrading bacterial strain bioremediation Cupriavidus campinensis BJ71 degradation characteristics. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200433 |
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| Souza,Jaqueline Pérola de; Nogueira,Gustavo Milhomens; Mataqueiro,Maria Isabel; Queiroz-Neto,Antonio de. |
| O organofosforado diclorvós impregnado em coleiras plásticas é um recurso utilizado em medicina veterinária que visa ao controle de ectoparasitas de cães e gatos. O objetivo deste trabalho foi avaliar os efeitos do uso de coleiras plásticas impregnadas com diclorvós (8,37%) em ratas Wistar durante o período de gestação e lactação, como possível fonte de alterações comportamentais e da atividade colinesterásica cerebral dos filhotes. Na desmama, não houve diferença na atividade colinesterásica cerebral entre as mães tratadas com diclorvós e o grupo controle, bem como entre os respectivos filhotes. O tratamento com diclorvós também não influenciou no comportamento geral dos animais, avaliado no campo aberto, nem no nível de ansiedade testado no labirinto em... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 2-diclorovinil dimetil fosfato neurotoxicologia do desenvolvimento coleira antipulga campo aberto labirinto em cruz elevado. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000200021 |
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| Neves,Rodrigo; Fleck,Nilson Gilberto; Silveira,Cristiane Amaro da; Costa,Emerson Luís Nunes. |
| Com o objetivo de avaliar a germinação de sementes de soja e o desenvolvimento inicial de plântulas, cujas plantas-mãe foram tratadas com subdoses de herbicidas sistêmicos nâo-seletivos em estádios avançados de desenvolvimento, realizaram-se experimentos a campo, em laboratório e em casa-de-vegetação na Faculdade de Agronomia da UFRGS, em Porto Alegre, RS, durante o período 1995/97. Os tratamentos constaram das aplicações a campo dos herbicidas 2,4-D nas doses de 5 e l0g/ha e.a., imawpyr a 25 e 50g/ha e.a. e sulfosate a 25 e 50g/ha e.a., usados no início do florescimento (estádio R1) ou no início da formação de legumes (estádio R3) das plantas de soja. Comprovou-se que a aplicação de imawpyr sobre plantas de soja no início... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D imazapyr sulfosate germinação das sementes desenvolvimento das plântulas. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781998000300003 |
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| Gedikli,Serap; Aytar,Pinar; Ünal,Arzu; Yamaç,Mustafa; Çabuk,Ahmet; Kolankaya,Nazif. |
| Lacasse is one of the extracellular enzymes excreted from white and brown rot fungi, which is involved in ligninolysis. In the present study, the effects of the addition of lacasse inducers to the medium on enhancement of enzyme production under conditions of submerged fermentation were researched. At first, a culture medium was selected suitable for lacasse production. To increase the production of lacasse using different inducers and to examine the ability of dechlorination, this article focuses on screen lacasse activity of 21 basidiomycetes isolates grown in five culture media. All inducers evaluated influenced lacasse activity positively except for gallic acid, mannitol, and malt extract for studied isolates. Our findings showed that lacasse activity... |
| Tipo: Journal article |
Palavras-chave: 2; 4; 5-trichlorophenol basidiomycetes dechlorination inducer lacasse. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000600006 |
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| Rashid,Umer; Ali,Shaukat; Ali,Ghulam Muhammad; Ayub,Najma; Masood,M. Shahid. |
| Four commercially grown wheat varieties of Pakistan, namely Inqilab-91, Chakwal-97, Tatara and Manthar were used for this investigation. For callus induction different concentrations of 2,4-Dichlorophenoxyaceticacid (2,4-D) along with 0.1 mg/L of Kinetin were evaluated. For regeneration initially different concentrations of Indole-3-Acetic Acid (IAA) and 6-BenzylAminoPurine (BAP) were tested. Best hormone combinations were further subjected to Kinetin and 6-γ-γ-dimethylallylaminopurine (2iP). For Inqilab-91, Chakwal-97 and Manthar, 3 mg/L of 2,4-D was found optimum, which induced 83.25%, 77.75% and 95.20%... |
| Tipo: Journal article |
Palavras-chave: 2; 4-D 2iP BAP callus induction IAA kinetin regeneration wheat. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000300004 |
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| Tian,Yanjun; Fan,Yixiao; Liu,Jianjun; Zhao,Xiangying; Chen,Wei. |
| Background: Currently, microbial fermentation method has become the research hotspot for acetoin production. In our previous work, an acetoin-producing strain, Bacillus subtilis SF4-3, was isolated from Japanese traditional fermented food natto. However, its conversion of glucose to acetoin was relatively low. In order to achieve a high-efficient accumulation of acetoin in B. subtilis SF4-3, main medium components and fermentation conditions were evaluated in this work. Results: The by-products analysis showed that there existed reversible transformation between acetoin and 2,3-butanediol that was strictly responsible for acetoin production in B. subtilis SF4-3. The carbon sources, nitrogen sources and agitation speed were... |
| Tipo: Journal article |
Palavras-chave: 2; 3-Butanediol Acetoin Bacillus subtilis SF4-3 Reversible transformation. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000100007 |
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| Aoki, Kaori. |
| A tephra layer with normal grading in the sub‐bottom depth interval 119–122 cm in marine core SO202‐27‐6 was collected on Patton Seamount in the northeast North Pacific Ocean. Based on the geochemistry of volcanic glass shards determined by a wavelength dispersive electron probe micro‐analyser and an X‐ray fluorescence analyser, this layer is correlated to the Dawson tephra, a widespread late Pleistocene time marker tephra in Alaska and the Yukon. The age of the Dawson tephra in the core is 29.03 ± 0.178 ka (1 sigma) based on a published age model. The Dawson tephra is revealed to have been deposited in the transition from marine isotope stage 3 to 2, i.e. the last stage of Heinrich Stadial 3 derived from the ice‐rafted... |
| Tipo: Text |
Palavras-chave: Dawson tephra; Heinrich Stadial; Late Pleistocene; Marine sediment; MIS3; 2. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00598/71056/69371.pdf |
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| Registros recuperados: 29 | |
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