|
|
|
|
|
| Romero Pérez, Atmir. |
| El selenito de sodio, el suplemento de selenio mas usado en rumiantes en la prevención de la deficiencia del elemento y las enfermedades resultantes, fue encapsulado por nanoprecipitación y emulsión-evaporación en nanopartículas poliméricas. Fue evaluado el efecto del método de preparación de nanoparticulas, proporciones de polímeros (Eudragit RL 100 y RS 100) y solvente empleado (etanol y acetona), sobre las características fisicoquímicas (potencial z, índice de polidispersidad y porcentaje de encapsulación) y la morfología (tamaño de partícula y forma) de las nanopartículas. El tamaño de partícula obtenido presentó valores de 34.64 a 213.86 nm. Tanto el tamaño como el potencial z y el PDI se incrementaron (P < 0.05) cuando se utilizó el... |
| Tipo: Tesis |
Palavras-chave: Nanopartículas; Selenito de sodio; Eudragit; Rumiantes; Maestría; Ganadería; Nanoparticles; Sodium selenite; Eudragit; Ruminants. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1515 |
| |
|
|
| Vieira,VI; Durau,JF; Schramm,VG; Bassi,LS; Oliveira,SG; Maiorka,A. |
| ABSTRACT The objective of the study was to evaluate the deposition of selenium in the breast muscle of broilers fed different selenium sources during different periods. Two experiments were carried out with broilers fed 45% sodium selenite (SS) or 2% hydroxy-selenomethionine (HSM) to determine the selenium deposition rate in the muscle tissue. In Experiment 1, 48 broilers were distributed in a completely randomized design with six treatments with eight replicates each, consisting of diets containing 0 Se (0), 200 or 400 µgSS/kg (200 SS, 400 SS), or 100, 200, or 300 µgHSM/kg (100 HSM, 200 HSM, 300 HSM) for 10 days. The highest Se breast content was obtained with 300 HSM diet, followed by 200 SS diet compared to the other treatments. Experiment 2 had a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breast muscle; Hydroxy-selenomethionine; Mineral deposition; Sodium selenite. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100312 |
| |
|
| |
|
|
| Apaydin,Fatma Gokce; Kalender,Suna; Bas,Hatice; Demir,Filiz; Kalender,Yusuf. |
| 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 gavage. At the end of 4th week, malondialdehyde (MDA) levels, antioxidant enzyme activities [superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-S-transferase (GST)], and histopathological changes of testes were investigated compared to the control group. No significant differences were observed between the control and sodium selenite treated groups. However, lead... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Testicular toxicity; Lead nitrate; Sodium selenite; Streptozotocin; Oxidative stress; Histopathology. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000100068 |
| |
|
|
| Karaboduk,Hatice; Uzunhisarcikli,Meltem; Kalender,Yusuf. |
| 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 chloride and sodium selenite plus vitamin E plus mercuric chloride daily via gavage for four weeks. Malondialdehyde (MDA) level, antioxidant enzyme activities [total superoxide dismutase (SOD), catalase (CAT), total glutathione peroxidase (GPx) and total glutathione-S-transferase (GST)], and histopathological changes in the heart tissue were evaluated. Results showed that mercuric chloride exposure... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mercuric chloride; Sodium selenite; Vitamin E; Cardiotoxicity; Oxidative Stress. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000200229 |
| |
|
|
| Boiago,Marcel Manente; Borba,Hirasilva; Leonel,Fábio Roberto; Giampietro-Ganeco,Aline; Ferrari,Fábio Borba; Stefani,Lenita Moura; Souza,Pedro Alves de. |
| Qualitative characteristics of breast meat of broilers fed diets supplemented with different concentrations (0; 0.3 and 0.5mg kg-1) of selenium in the form of selenomethionine and sodium selenite were analyzed. A total of 1050 one-day-old male Cobb broiler chicks were arranged factorially at random to five treatments (two concentrations x two sources + control diet without addition of selenium) with 7 replications of thirty birds each and received an isonitrogenous and isocaloric diets in all phases according to their ages (1-21, 22-35, and 36-42 days). At 42 days of age, TBARS (thiobarbituric acid reactive substances) after storage at 4ºC for one, seven and 15 days and also after 30 days under freezing temperatures (-15°C), color (CIELab), water holding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler; Meat quality; Pectoralis major; Selenomethionine; Sodium selenite. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000901692 |
| |
|
| |
|
|
|
