RESUMO
BACKGROUND: Alzheimer's disease (AD) is an age-associated neurodegenerative disorder that is associated with a progressive impairment of cognition. Acupuncture has protective effects, although the molecular mechanisms are largely unknown. The activation of peroxisome proliferator activated receptor γ (PPAR-γ) has an impact on the pathogenesis of AD. OBJECTIVE: To test the hypothesis that electroacupuncture (EA) confers therapeutic benefits through activation of PPAR-γ in a rat model of AD. METHODS: 80 male Sprague-Dawley rats were randomly divided into four groups (n=20 each): Control (healthy control group), Sham (sham-operated group), AD (untreated AD model group), and AD+EA (AD model group treated with EA). The AD model was induced in the latter two groups by injection of amyloid-ß (Aß)1-40 into the hippocampal CA1 area bilaterally. EA was administered at GV20 and BL23 six times per week for 4â weeks. The rats' behaviour was examined using the Morris water maze test, and protein expression of Aß, hyperphosphorylated tau protein (p-Tau), PPAR-γ, and hyperphosphorylated p38 mitogen activated protein kinase (p38MAPK) in the hippocampal CA1 region was examined by immunohistochemistry and Western blotting. RESULTS: EA significantly improved cognitive deficits and reduced Aß and p-Tau Ser404 protein concentrations in the hippocampal CA1 region. AD decreased PPAR-γ and increased p-p38MAPK, while EA significantly upregulated PPAR-γ expression and significantly downregulated p-p38MAPK expression. CONCLUSIONS: Acupuncture at GV20 and BL23 might have a beneficial effect on rats with AD via activation of PPAR-γ and inhibition of p-p38MAPK expression.
Assuntos
Doença de Alzheimer/terapia , Disfunção Cognitiva/metabolismo , Eletroacupuntura/métodos , PPAR gama/metabolismo , Doença de Alzheimer/induzido quimicamente , Doença de Alzheimer/complicações , Peptídeos beta-Amiloides , Animais , Região CA1 Hipocampal/metabolismo , Disfunção Cognitiva/etiologia , Modelos Animais de Doenças , Imuno-Histoquímica , Masculino , Fragmentos de Peptídeos , Ratos , Ratos Sprague-DawleyRESUMO
PURPOSE: The purpose of this pilot study was to examine the effect of a Chinese traditional exercise program, Qigong Yi Jinjing (QYJJ), on patients with chronic obstructive pulmonary disease (COPD). METHODS: One hundred and thirty eligible COPD patients were randomly divided into three groups: the QYJJ group (n = 42), the self-management exercise group (n = 43), and the control group (n = 45). Data were collected and analyzed at baseline and again at one, three, and six months. A pulmonary rehabilitation index, consisting of pulmonary function, six-minute walk test, Regulatory Emotion Self-Efficacy questionnaire, and exercise of the COPD Assessment Test widely used to evaluate health-related quality of life (HRQL) in participants with COPD, was measured. RESULTS: Compared with the other groups, participants in QYJJ group had significantly better lung function (forced expiratory volume in one second: F = 8.96, p = 0.000; forced expiratory volume in one second/forced vital capacity: F = 11.55, p = 0.000; the percentage of forced expiratory volume in one second in prediction: F = 24.27, p = 0.000); walked a longer distance (F = 152.52, p = 0.000), and had more satisfactory HRQL (F = 14.08, p = 0.000). QYJJ training also contributed to improving the ability of emotion regulation (F = 36.56, p = 0.000). There were significant positive changes in expressing positive affect (F = 56.25, p = 0.000) and managing despondency/distress (F = 21.58, p = 0.000), apart from the ability to regulate anger/irritation (F = 1.20, p = 0.305). The longer QYJJ is practiced, the more effective the influence is on the pulmonary rehabilitation-related index measures. CONCLUSIONS: These results indicate that QYJJ exercise produced positive effects on pulmonary function, physical activity, emotion regulation self-efficiency (modulating the expression of despondency or distress and experiencing and expressing positive affect), and HRQL in patients with COPD.