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Mostrando 1-12 de 3689 artigos, teses e dissertações.
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1. Study on the mechanisms of Suaeda rigida polysaccharides on the heart inhibition and skeletal muscle promotion in the frog
RESUMO Os objetivos deste estudo foram investigar os efeitos de diferentes concentrações de Suaeda rigida polissacarídeos (SRPs) sobre as características fisiológicas do coração de rã e do músculo gastrocnêmio, comparar suas semelhanças e diferenças, e analisar os mecanismos. CaCl2 e acetilcolina (Ach) foram selecionados respectivamente para sere
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2022
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2. Study on the serum level of CoQ10B in patients with Moyamoya disease and its mechanism of affecting disease progression
RESUMO Antecedentes: No momento, a etiologia e a patogênese da doença de Moyamoya (DMM) não são completamente claras. Os pacientes geralmente são diagnosticados após eventos cerebrovasculares. Sendo assim, é de grande importância clínica explorar os fatores preditivos de DMM. Objetivo: Este estudo teve como objetivo investigar o nível sérico de Co
Arquivos de Neuro-Psiquiatria. Publicado em: 2022
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3. Effects of Hyperthyroidism on Contractility and Na+/Ca2+ Exchanger Activity in the Isolated Papillary Muscle of Rats
Abstract Background: Hyperthyroidism (Hy) is an endocrine disorder, in which the thyroid hormones markedly alter the cardiac function. Increased myocardial contractility and cardiac output, improvement in diastolic relaxation, changes in electrical activity, increments in ventricular mass, and arrhythmias have been reported. However, the influences of thyro
International Journal of Cardiovascular Sciences. Publicado em: 2022
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4. Avaliando o crescimento do Charr Ártico (Salvelinus alpinus) (Linnaeus, 1758) em quatro salinidades, sob condições experimentais
Resumo Estudos em Salvelinus alpinus, Charr Ártico, indicam que tem baixa capacidade de hiposmorregulação ou adaptação ao mar em períodos de inverno nas águas do Ártico. A investigação determina o melhor nível de salinidade para cultivar esta espécie no Chile. Determinou-se o peso adequado para se unir ao mar pela análise da atividade da Na +, K
Braz. J. Biol.. Publicado em: 2020-12
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5. Assessing the growth of Arctic charr (Salvelinus alpinus) (Linnaeus, 1758) in four salinities, under experimental conditions
Resumo Estudos em Salvelinus alpinus, Charr Ártico, indicam que tem baixa capacidade de hiposmorregulação ou adaptação ao mar em períodos de inverno nas águas do Ártico. A investigação determina o melhor nível de salinidade para cultivar esta espécie no Chile. Determinou-se o peso adequado para se unir ao mar pela análise da atividade da Na +, K
Braz. J. Biol.. Publicado em: 02/12/2019
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6. Water pH and hardness alter ATPases and oxidative stress in the gills and kidney of pacu ( Piaractus mesopotamicus )
RESUMO Este estudo objetivou analisar o efeito de baixa e alta dureza da água em interação com diferentes pH da água em pacu (Piaractus mesopotamicus). Juvenis de pacu foram submetidos a baixa (50 mg CaCO3 L-1 - BDA) ou alta dureza da água (120 mg CaCO3 L-1 - ADA) em pH da água de 5.5 ácido), 7.5 (circum-neutro) ou 9.0 (alcalino) por 15 dias. Foram co
Neotrop. ichthyol.. Publicado em: 25/11/2019
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7. Antibacterial Activity of Polygonum Orientale Extracts Against Clavibacter Michiganensis subsp. michiganensis, the Agent of Bacterial Canker of Tomato Disease
Abstract Clavibacter michiganensis subsp. michiganensis (Cmm), which is a Gram positive bacterium, causes the bacterial canker of tomato disease. The purpose of the study was to evaluate the antibacterial activity of Polygonum orientale extracts against Cmm. In this study, firstly, effects of three extracting parameters (extractive time, extractive temperat
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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8. Goitrogenic/antithyroidal potential of moringa leaves (Moringa oleifera) and spinach (Spinacia oleracea) of Indian origin on thyroid status in male albino rats
Moringa leaves and spinach used as vegetables containing cyanogens and polyphenols having suspected antithyroidal activity; however, detailed studies in this aspect found unavailable. Goitrogenic/antithyroid potentiality of those plant foods of Indian origin was evaluated. To explore the goitrogenic/antithyroid effect of those plant foods cyanogenic glucosid
Braz. J. Pharm. Sci.. Publicado em: 24/10/2019
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9. Essential oil of the leaves of Eugenia sulcata preserve myocardial contractility and does not present immunotoxicity
The essential oil of the leaves of Eugenia sulcata, in the Myrtaceae family, has a demonstrated antihypertensive effect, but its effects on heart muscle and its toxicity have not yet been elucidated. Little chemical or biological data are available for E. sulcata, whether emphasizing the beneficial effects or the pharmacological security of this species. Thi
Braz. J. Pharm. Sci.. Publicado em: 30/09/2019
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10. Resveratrol and resveratrol-hydroxypropyl-β-cyclodextrin complex recovered the changes of creatine kinase and Na+, K+-ATPase activities found in the spleen from streptozotocin-induced diabetic rats
Abstract: Type 1 diabetes (T1D) is the result of the selective destruction of the pancreatic β-cells by T cells of the immune system. Although spleen is a secondary lymphoid organ, it is also involved in the T1D pathogenesis. However, the alterations in a variety of cellular processes of this disease need to be further understood. We aimed to analyze the be
An. Acad. Bras. Ciênc.. Publicado em: 09/09/2019
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11. Low dissolved oxygen levels increase stress in piava (Megaleporinus obtusidens): iono-regulatory, metabolic and oxidative responses
Abstract: The aquatic environment presents daily and/or seasonal variations in dissolved oxygen (DO) levels. Piava faces different DO levels in the water due to its distributional characteristics. The goal of this study was to describe the effects of low DO levels on plasma ion, biochemical and oxidative variables in piava juveniles. Fish were exposed to dif
An. Acad. Bras. Ciênc.. Publicado em: 19/08/2019
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12. Cardiac function and intracellular Ca2+ handling proteins are not impaired by high-saturated-fat diet-induced obesity
Obesity is often associated with changes in cardiac function; however, the mechanisms responsible for functional abnormalities have not yet been fully clarified. Considering the lack of information regarding high-saturated-fat diet-induced obesity, heart function, and the proteins involved in myocardial calcium (Ca2+) handling, the aim of this study was to t
Braz J Med Biol Res. Publicado em: 27/05/2019