Estudo do efeito da ayahuasca sobre a agressividade de ratos submetidos ao estresse por contenção

Agressividade humana e animal acima dos padrões comportamentais esperados têm sido noticiados constantemente pela mídia e revistas especializadas na área de neurociência e neurocomportamento, sendo que várias causas tem sido atribuídas a este desvio, incluindo modificações dos padrões de relações sociais, situações levando a aumento do estresse (ES), substâncias químicas poluentes ambientais, etc. Em toxicologia já se conhece bem o fato de que aumento do estresse pode levar a aumento de comportamentos como ansiedade e agressividade. A Ayahuasca (Ay) é uma beberagem indígena que foi liberada no Brasil e em alguns outros países, para utilização em rituais religiosos. Vários estudos observacionais com humanos têm informado que a Ay poderia diminuir a agressividade, mas não existem dados experimentais concretos sobre esta possibilidade. Neste estudo objetivou-se avaliar o efeito da Ay na agressividade de animais experimentais recebendo estresse por contenção. Para os experimentos três grupos de animais (N=8), respectivamente controle (Ct), recebendo estresse por contenção (ES) e recebendo estresse por contenção mais Ayahuasca (ES+Ay), foram testados para o comportamento de agressividade utilizando o paradigma do animal residente/intruso. Os resultados obtidos demonstram que o grupo ES apresentou alterações dos parâmetros testados para agressividade e que no grupo ES+Ay estes parâmetros estavam normalizados. Conclui-se que a Ayahuasca conseguiu impedir a agressividade aumentada provocada pelo estresse por imobilização.

Estresse oxidativo em cães com doença renal crônica

Pós-graduação em Medicina Veterinária - FCAV

Avaliação de fatores preditivos de estresse oxidativo em pessoas saudáveis

Evaluation of predictive factors for oxidative stress in healthy people. This study aimed to evaluate the inÀuence of factors such as smoNing, alcohol consumption, use of medicines, contact Zith chemicals, as Zell as age and gender on marNers of oxidative stress, in healthy subMects. :e checNed the effect of age on the antioxidant capacity, Zith decreased values in older individuals, Zhich may be the cause of increased oxidative stress, associated Zith aging. Regarding the other factors, no differences Zere found in the values of the marNer of lipid peroxidation and the antioxidant capacity.

Alterações em marcadores do estresse oxidativo ocasionadas por diferentes tempos de tratamento com chá mate (Ilex paraguariensis) no processo de envelhecimento

Pós-graduação em Ciências fisiológicas

Estresse oxidativo em ovinos das raças Suffolk e Santa Inês experimentalmente infectados por Haemonchus contortus

Pós-graduação em Ciência Animal - FMVA

Testes de estresse na avaliação do vigor de sementes de milho

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estresse calórico sobre a luteólise de vacas holandesas não lactantes

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Efeito do estresse crônico e benzodiazepínicos no reparo ósseo: estudo histológico em ratos

Stress is an environmental factor that may predispose individuals to depression. Benzodiazepines have been prescribed as effective drugs in these situations. The purpose of this study was histological evaluate of the effect of chronic stress and benzodiazepine drugs on bone healing. Bone cavities were created in both tibias of 40 male rats were divided into two groups: Control and Treaty. In this, the stressor stimulus was applied 40 days pre-operative and all post-operative days until sacrifice in the morning for 2 hours, by immobilizing restraint. These animals also received diazepam benzodiazepine group, daily, at a concentration of 5mg/Kg/peso body within 15 days of preoperative. In groups of five animals were sacrificed at 7, 14, 30 and 60 days post-surgery. At 7 days postoperatively, while the control group exhibited tissue rich in fibroblasts, the treated group showed newly formed tissue with few fibroblasts and capillaries along with lymphocytes and macrophages. At 14 days postsurgery, the control group showed newly formed trabecular bone while the treated group progressed to thin trabecular bone with numerous osteoblasts on their borders. At 30 days post-operative bone healing is complete in both groups. At 60 days post-operative characteristics observed in the treated and control groups are similar to the previous period, but with more advanced osteogenesis.

Efeito do envelhecimento e do estresse crônico sobre a reação do tecido conjuntivo subcutâneo: estudo histológico em ratos

Physiological functions undergo a gradual retardation that begins around 25-30 years and extends to the death. Moreover, this change affects most severely the activities more complex and more intricate responses to tensions or stress. The purpose of this study was to evaluate histologically in aged rats the effect of chronic stress on the reaction of subcutaneous connective tissue. The purpose of this study was to evaluate histologically in aged rats the effect of chronic stress on the reaction of subcutaneous connective tissue. For this purpose, 60 rats were divided into four groups (GI (control), GII (stressed), GIII (elderly) and GIV (aged / stressed) received dorsal subcutaneous implants of polyethylene tubes containing saline solution. In groups of four animals were sacrificed at 7,14 and 28 days postoperatively. The results allowed to observe more intense inflammatory reaction and tissue organization later in the aged animals subjected to stress.

Estresse salino em plantas jovens de cana-deaçúcar: respostas bioquímicas e fisiológicas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Índice de estresse hídrico na cultura de cana-de-açúcar, em superfícies irrigadas sobre diferentes exposições e declividades

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A importância de ações estratégicas de gestão de pessoas no manejo do estresse e de estressores ocupacionais

The introducing of new technologies at work contexts forces the contemporary organizations to search new structures and productive processes, as well as new management models, mainly personnel management. A strong pressure by positive results can favour health problems concerning to stress, which is caused by a highly competitive environment; studies reveals that stress is a present reality at organizations nowadays. The presence of stress on workers cause harm to organizations (due to absenteeism increasing, turnover, interpersonal conflicts, etc.) and individuals, whose life quality can be decreased. This text intends to highlight the importance of identifying stress presence on workers and eventual stressors at workplaces, with the objective of, through management strategies, propose interventions guided to promote occupational health and welfare. Identifying eventual stressors at workplaces becomes an essential task, because those signs predispose the stress presence on workers. Therefore, discovering them is a strategic way to preventing and managing of occupational stress. This text also proposes to show some personnel management strategies which can favour the prevention of occupational stressors, as well as interventions on them.

Eficiência do uso da água e parâmetros nutricionais na cultura da rúcula submetida a diferentes condições de estresse hídrico

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

Desenvolvimento infantil: associação com estresse, ansiedade e depressão materna, da gestação ao primeiro ano de vida

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estresse psicológico e desempenho de atletas juniores: uma análise documental

Soccer is one of the most practiced sports in the world, and for many years, some areas of physical education has been doing studies related to the improvement of their income from these areas if this sport psychology. The psychological aspects are very influential and involved in the daily life of an athlete, especially for basic categories of athletes who see in soccer a dream to come true or only a source of income for his family, where such aspects act beneficially or evil for the athlete. Stress, in particular, can appear in various situations and in various ways, and different influences and reactions athlete to athlete, also resulting in physiological changes and variations in performance. Stress, and especially stressful situations, like any psychological aspect should be identified in order to train your athlete to know how to deal with stressful situations. Know what are the stressors, which carries the stress load for the athlete, how to handle the stressful situations, using psychological training in the preseason, know how to use stress management techniques, and be able to manage it all so your athlete reaches an optimal level of income is described in the present work, in order to provide a theoretical and updated reference for professionals of Physical Education, so that they stay up to date on sports psychology and also understand a little more on this subject, which is still little discussed within soccer and often overlooked by many professionals who are already in the context of competitive soccer