978 resultados para Aminoacidos na nutrição


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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Agronomia (Horticultura) - FCA

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The benefits of proper nutrition and analgesia are closely linked when it comes to animals that are suffering from any illness and are hospitalized. In patients who are ill or under the stress of hospitalization, increase secretion of glucagon, catecholamines, cortisol and growth hormone antagonize the effects of insulin, leading to hyperglycemia and degradation of tissue proteins to provide substrate for gluconeogenesis. These changes result in loss of lean body mass, reflecting negatively on tissue repair processes, immune response and prognosis. Likewise, the pain induced by noxious stimulation can lead to protein catabolism, stress, immunosupression, delayed wound healing and acceleration of disease processes. This review confirms the nutrition and pain control importance in hospitalized patients, showing their physiological benefits and reduction in hospital stay when the clinician understands these benefits and the animals are treated with such care

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A síndrome metabólica é um mal que, segundo projeções, poderá no ano de 2010, acometer de 50 a 75 milhões de pessoas somente nos Estados Unidos. Dessa forma, é de grande interesse a implementação de procedimentos mais eficazes para prevenção e tratamento desta doença. Uma vez que existem limitações nas pesquisas com seres humanos, torna-se necessário o desenvolvimento de modelos experimentais apropriados ao estudo desta questão. Na busca de um modelo experimental adequado ao estudo do papel do exercício na prevenção e no tratamento da síndrome metabólica, o presente estudo analisou o perfil metabólico e a capacidade aeróbia de ratos mantidos com dieta rica em frutose, substrato que tem sido associado à síndrome metabólica, na vida intra-uterina e pós-natal. Foram utilizadas ratas adultas (90 dias) da linhagem Wistar, alimentadas durante a prenhez e a lactação com dois tipos de dieta: balanceada (AIN-93G) e rica em frutose (60% de frutose). Durante a amamentação, os filhotes foram distribuídos em ninhadas pequenas (4/mãe) ou adequadas (8/mãe). Após o desmame, manteve-se as mesmas dietas até os 90 dias, quando foram analisados: tolerância à glicose (teste de tolerância à glicose), sensibilidade periférica à insulina (teste de tolerância à insulina); capacidade aeróbia (determinação da máxima fase estável de lactato em natação), conteúdo pancreático de insulina; peso e concentração de lipídios totais no tecido adiposo de diferentes regiões e concentrações séricas de glicose, insulina, triglicerídeos, colesterol total, colesterol LDL, colesterol HDL. Constatou-se que a dieta rica em frutose conduziu os animais a resistência à insulina. O grupo FP apresentou dislipidemia, com aumento nas concentrações séricas de colesterol total e triglicerídeos, mostrando que o modelo animal avaliado é potencialmente interessante para o estudo da síndrome metabólica.

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The beneficial effects derived from the nutritional support in human patients and experimental animal models include the improvement of immune function, repair of wounds, answer to the treatment, time of recovery and survival. In front of these benefits, we end up alienating the nutritional needs of hospitalized patients, especially those with clinical or surgical affections threatening. The objective of the nutritional support is to indicate the importancea and the proportions of energy and nutrients that the patient can use with the maximum effectiveness. The majority of hospitalized patients do not have voluntary food intake adequate to meet even the minimal nutritional needs. It is often perceived that lack of adequate food intake, will have serious impact on the patient’s clinical outcome. The nutritional assessment will help determine which route of feeding will be the safest, most effective and best tolerated by the patient. Diet choice is based on which of the patient’s problems can and should be addressed with nutrition and the feeding access available

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Agronomia (Produção Vegetal) - FCAV

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The experiment was carried out aiming to analyze dry mass production and distribution, and the content and accumulation of macronutrients in Urochloa arrecta plants cultivated under mineral nutrition standard conditions. Plants grew in seven-liter pots filled with sand substrate, were daily irrigated with nutrient solution, and maintained under greenhouse conditions. Treatments corresponded to assessment periods (21, 35, 49, 63, 77, 91, 105, 119, 133, 147, and 161 days after emergence - DAE) and were arranged in a completely randomized design with four replicates. Plants of U. arrecta showed low accumulation (less than 7% of the maximum accumulation at 161 DAE) of dry mass (5.1 g DM per planta) and of macronutrients (57.7 mg N per planta, 8.9 mg P per planta, 167.8 mg K per planta, 21.3 mg Ca per planta, 14.7 mg Mg per planta, and 9.2 mg S per planta) up to 49 DAE. Such accumulations increased mainly after 91 DAE. Daily accumulation rate was crescent up to 130 DAE (DM and S), 137 DAE (N), 125 DAE (P), 119 DAE (K), 144 DAE (Ca), and 128 DAE (Mg), when there was accumulation of 87.7 g DM per planta, 918.0 mg N per planta, 105.8 mg P per planta, 1,643.9 K per planta, 390.4 mg Ca per planta, 200.0 mg Mg per planta, and 103.5 mg S per planta. K and N were found to have the highest rates and, hence, they were the most demanded and accumulated in the greatest amounts in U. arrecta plant tissues.

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Several factors influence the productivity and fruit quality of pineapple and passion fruit, among which are: climate, soil fertilization and irrigation practices. Mineral nutrition is essential to increase productivity and improve fruit quality; however, there is a few information about the effect of fertilization in these two fruit crops, especially under tropical conditions. The objective of this review was to compile the main research results, in which the influence of mineral nutrition on the fruit quality was evaluated. We considered the information recently published in scientific journals, and presented it for the macronutrients individually, then to NPK and, finally, the micronutrients. The review showed that it is difficult to say that some element favors or not certain characteristics of pineapple and passion fruit fruits, since the results are inconsistent and there is not many information. More than established the effects of mineral nutrients on the fruit quality of these two fruit crops, we stand out that research in this topic is very necessary.