ANÁLISE DA GLÂNDULA PINEAL DE RATOS COM PARKINSON TRATADOS COM MELATONINA E EXERCÍCIO FÍSICO RESISTIDO PROGRESSIVO
ANÁLISE DA GLÂNDULA PINEAL DE RATOS COM PARKINSON TRATADOS COM MELATONINA E EXERCÍCIO FÍSICO RESISTIDO PROGRESSIVO
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DOI: https://doi.org/10.22533/at.ed.0051125180310
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Palavras-chave: Doença de Parkinson, Exercício Físico, Melatonina, Glândula Pineal.
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Keywords: Parkinson's Disease, Physical Exercise, Melatonin, Pineal Gland.
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Abstract: Parkinson's disease (PD) is characterized by a progressive degenerative neurological disorder of the substantia nigra of the midbrain. PD presents with classic motor and non-motor symptoms such as sleep disturbances, cognitive decline, anxiety, and depression. Associated with the symptoms triggered by Parkinson's, studies indicate that melatonin can act on the physiological changes triggered by the disease. Therefore, analyzing the pineal gland in the context of PD-related studies becomes crucial. Considered a non-pharmacological alternative, physical exercise plays a fundamental role in reducing motor and non-motor symptoms in PD patients, as well as its neuroprotective effect. Given these issues, the objective of this study was to analyze the effects of a progressive resistance exercise program performed on a vertical ladder, combined with the use of melatonin, on the pineal gland of rats with Parkinson's disease. For this purpose, samples from 80 male Wistar rats undergoing Parkinson's disease induction surgery were used. Melatonin treatment was administered intraperitoneally, while animals without melatonin received saline injections. Progressive Resistance Training (PRST) consisted of 4 weeks of training, 5 days a week, lasting 30 to 45 minutes per session. The animals underwent eight sessions of eight climbs with overloads of 50%, 75%, 90%, and 100% of body weight. After the program, the brains removed for analysis were fixed in formalin, and the slides were stained with Nissl. This involves immersing the slide in cresyl violet solution (Sigma-Aldrich Brasil Ltda.)—a neuron-specific marker—to highlight neuronal cytoplasm and Nissl bodies. Histomorphometric analysis of the pineal gland was performed using Image J. Images of the slides were captured using a camera attached to a microscope, followed by viable cell counting using Image J. GraphPad Prism 8.0 was used for statistical analysis. The results showed no significant differences in the morphological structure of the pineal gland, demonstrating that high-intensity exercise and melatonin treatment did not interfere morphologically with the pineal gland.
- Ana Lívia Teixeira
- Miguel Henrique Dos Reis
- Laila Cristina Moreira Damázio