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Mostrando 37-48 de 760 artigos, teses e dissertações.
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37. Vitamin E and Sodium Selenite Against Mercuric Chloride-Induced Lung Toxicity in the Rats
The aim of the present study was to elucidate the possible protective role of vitamin E and / or sodium selenite on mercuric chloride-induced oxidative stress and histopathological changes in the lung tissue of the rats. Adult male albino Wistar rats were exposed to mercuric chloride (1.0 mg/kg day) for four weeks. Treatment with mercuric chloride led to oxi
Braz. arch. biol. technol.. Publicado em: 2015-08
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38. A note on the distribution of genetic diversity of Anglo-Nubian goats in central-northern farms of Piauí, Brazil
The objective of this study was to characterize the genetic variability of Anglo-Nubian goats using microsatellite markers. The study was conducted using herds from four municipalities of Central-Northern Piauí (Teresina, José de Freitas, Campo Maior, and Angical), where technical information is scarce. Seven markers suggested by FAO were used (ILSTS11, Mc
R. Bras. Zootec.. Publicado em: 2015-04
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39. Biomarkers of oxidative stress and acetylcholinesterase activity in the blood of grass snake (Natrix natrix L.) during prehibernation and posthibernation periods
This work examined the enzymatic (superoxide dismutase-CuZn SOD, catalase-CAT, glutathione peroxidase-GSHPx, glutathione reductase-GR, and the biotransformation phase II enzyme glutathione-S-transferase-GST) and nonenzymatic (total glutathione-GSH and lipid peroxides-TBARS concentrations) biomarkers of oxidative stress and acetylcholinesterase (AChE) activit
Braz. arch. biol. technol.. Publicado em: 06/03/2015
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40. Sorafenib prevents liver fibrosis in a non-alcoholic steatohepatitis (NASH) rodent model
Liver fibrosis occurring as an outcome of non-alcoholic steatohepatitis (NASH) can precede the development of cirrhosis. We investigated the effects of sorafenib in preventing liver fibrosis in a rodent model of NASH. Adult Sprague-Dawley rats were fed a choline-deficient high-fat diet and exposed to diethylnitrosamine for 6 weeks. The NASH group (n=10) rece
Braz J Med Biol Res. Publicado em: 24/02/2015
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41. Protective Effects of Sodium Selenite and Vitamin E on Mercuric Chloride-Induced Cardiotoxicity in Male Rats
This study was designed to investigate the protective effects of sodium selenite and/or vitamin E against mercuric chloride-induced cardiotoxicity. Male Wistar rats (n=48, 310±10 g) were administered mercuric chloride (1.0 mg/kg bw), sodium selenite (0.25 mg/kg bw), vitamin E (100 mg/kg bw), sodium selenite plus mercuric chloride, vitamin E plus mercuric ch
Braz. arch. biol. technol.. Publicado em: 13/01/2015
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42. The essential oil from Lippia alba induces biochemical stress in the silver catfish (Rhamdia quelen) after transportation
Este estudo investigou os efeitos do óleo essencial (OE) de Lippia alba sobre parâmetros bioquímicos relacionados ao estresse oxidativo em cérebro e fígado de jundiá (Rhamdia quelen), após seis horas de transporte. Os peixes foram transportados em sacos plásticos e divididos em três tratamentos: controle, 30 µL L-1 e 40 µL L-1 de OE de L.alba. Ant
Neotrop. ichthyol.. Publicado em: 11/11/2014
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43. Efficient Expression and Purification of Recombinant Human Enteropeptidase Light Chain in Esherichia coli
Human enterokinase (synonym: enteropeptidase, EC 3.4.21.9) light chain (hEKL) gene was designed and artificially synthesized with built-in codon blas towards Escherichia colicodon preference. The synthetic hEKL gene was cloned into prokaryotic expression vector pMAL-s and transferred into the expression strain E. coli BL21 (DE3). Recombinant hEKL protein wit
Braz. arch. biol. technol.. Publicado em: 14/10/2014
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44. Genetic variation in cultivated Rheum tanguticum populations
To examine whether cultivation reduced genetic variation in the important Chinese medicinal plant Rheum tanguticum, the levels and distribution of genetic variation were investigated using ISSR markers. Fifty-eight R. tanguticum individuals from five cultivated populations were studied. Thirteen primers were used and a total of 320 DNA bands were scored. Hig
Genet. Mol. Biol.. Publicado em: 2014-09
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45. Lead Nitrate Induced Testicular Toxicity in Diabetic and Non-Diabetic Rats: Protective Role of Sodium Selenite
Among heavy met als, lead is one of the common pollutants found in the environment and biological system. In the present study, streptozotocin-induced diabetic and normal non-diabetic male Wistar rats were given sodium selenite (1.0 mg/kg bw), lead nitrate (22.5 mg/kg bw) and sodium selenite plus lead nitrate (1.0 mg/kg+22.5 mg/kg bw, respectively) through g
Braz. arch. biol. technol.. Publicado em: 01/08/2014
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46. Variabilidade genética em populações naturais de Ziziphus joazeiro Mart., por meio de marcadores moleculares RAPD
Os estudos de diversidade genética em populações naturais são imprescindíveis para a elaboração de estratégias de conservação. Assim, este trabalho foi realizado com o objetivo de caracterizar geneticamente, por meio de marcadores Random Amplified Polymorphic DNA (RAPD), populações naturais de Ziziphus joazeiro Mart., localizadas na região do Ba
Rev. Árvore. Publicado em: 2014-08
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47. Estrutura e diversidade genética de Copaifera langsdorffii Desf. em fragmentos de Cerrado no Estado de São Paulo
Considerando que a perda de grandes áreas de Cerrado no Brasil pode levar à diminuição da biodiversidade e, mesmo, à extinção de espécies, questiona-se a fragilidade genética de populações de Copaifera langsdorffii Desf. expostas a diferentes condições antrópicas em fragmentos de Cerrado do Estado de São Paulo. Foram consideradas duas áreas e
Rev. Árvore. Publicado em: 2014-08
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48. Uma glutationa s-transferase confere tolerância a herbicida em arroz
Plantas glutationa s-transferase (GSTs) têm sido foco da atenção devido ao seu papel na detoxificação de herbicida. OsGSTL2 é uma glutationa s-transferase, gene da classe lambda de rice (Oryza sativa L.). Plantas transgênicas de arroz superexpressando OsGSTL2 foram geradas de "calus" de arroz via sistema de transformação de Agrobacterium, e foram av
Crop Breed. Appl. Biotechnol.. Publicado em: 2014-06