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1.
Neural Regen Res ; 16(7): 1229-1234, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33318399

RESUMO

Previous studies have shown that transcranial pulse current stimulation (tPCS) can increase cerebral neural plasticity and improve patients' locomotor function. However, the precise mechanisms underlying this effect remain unclear. In the present study, rat models of stroke established by occlusion of the right cerebral middle artery were subjected to tPCS, 20 minutes per day for 7 successive days. tPCS significantly reduced the Bederson score, increased the foot print area of the affected limbs, and reduced the standing time of affected limbs of rats with stroke compared with that before intervention. Immunofluorescence staining and western blot assay revealed that tPCS significantly increased the expression of microtubule-associated protein-2 and growth-associated protein-43 around the ischemic penumbra. This finding suggests that tPCS can improve the locomotor function of rats with stroke by regulating the expression of microtubule-associated protein-2 and growth-associated protein-43 around the ischemic penumbra. These findings may provide a new method for the clinical treatment of poststroke motor dysfunction and a theoretical basis for clinical application of tPCS. The study was approved by the Animal Use and Management Committee of Shanghai University of Traditional Chinese Medicine of China (approval No. PZSHUTCM190315003) on February 22, 2019.

2.
Trials ; 21(1): 910, 2020 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-33148333

RESUMO

BACKGROUND: Practitioners of complementary and alternative medicine have suggested that electroacupuncture (EA) could improve post-stroke cognitive impairment, based on the clinical evidence. This study protocol is aimed at showing the effectiveness of theta and gamma EA for post-stroke patients on working memory (WM) and electrophysiology. METHODS: After assessing their eligibility, 66 patients with stroke will be enrolled from two Chinese medicine hospitals and randomly divided into theta frequency EA group, gamma frequency EA group, and sham-EA group according to the ratio of 1:1:1. All patients will receive 20 sessions of EA procedures for 4 weeks. Patients in three groups will receive EA at two same acupoints in the head: Baihui (GV20) and Shenting (GV24). The frequency of the three groups of EA is set as follows: 6 Hz (theta-EA group), 40 Hz (gamma-EA group), and no current through the electrodes (sham EA). Patients and assessors will be blinded throughout the entire study. The primary outcome is the performance accuracy of 1-back task which is a frequently used measure of WM in cognitive neuroscience research contexts. Secondary outcome measures will include the response time of 1-back task, the Rivermead Behavioral Memory Test, Trail Making Test, Loewenstein Occupational Therapy Cognitive Assessment Scale, modified Barthel Index, and electroencephalogram (EEG) signals during 1-back tasks. A blinding index will be assessed. Data will be statistically analyzed by one-way ANOVA, at 5% of significance level. DISCUSSION: We expect this double-center, randomized, patient- and assessor-blinded, sham-controlled, parallel, clinical trial to explore the effectiveness of theta and gamma EA therapy, compared with sham EA, for post-stroke WM. TRIAL REGISTRATION: Chinese Clinical Trial Registry, ChiCTR2000031995 . Registered on 17 April 2020.


Assuntos
Eletroacupuntura , Acidente Vascular Cerebral , Eletrofisiologia , Humanos , Memória de Curto Prazo , Ensaios Clínicos Controlados Aleatórios como Assunto , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/terapia , Resultado do Tratamento
3.
Front Aging Neurosci ; 8: 276, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27999539

RESUMO

Ginkgo biloba extracts (GBEs) have been recommended to improve cognitive function and to prevent cognitive decline, but earlier evidence was inconclusive. Here, we evaluated all systematic reviews of GBEs for prevention of cognitive decline, and intervention of mild cognitive impairment (MCI) and dementia. Six databases from their inception to September 2015 were searched. Ten systematic reviews were identified, including reviews about Alzheimer's disease (n = 3), about vascular dementia (n = 1), about both Alzheimer's disease and vascular dementia (n = 2), about Alzheimer's disease, vascular dementia and mixed dementia (n = 3), and a review about MCI (n = 1). Based on the overview quality assessment questionnaire, eight studies were scored with at least 5 points, while the other two scored 4 points and 3 points, respectively. Medication with GBEs showed improvement in cognition, neuropsychiatric symptoms, and daily activities, and the effect was dose-dependent. Efficacy was convincingly demonstrated only when high daily dose (240 mg) was applied. Compared with placebo, overall adverse events and serious adverse events were at the same level as placebo, with less adverse events in favor of GBE in the subgroup of Alzheimer's disease patients, and fewer incidences in vertigo, tinnitus, angina pectoris, and headache. In conclusion, there is clear evidence to support the efficacy of GBEs for MCI and dementia, whereas the question on efficacy to prevent cognitive decline is still open. In addition, GBEs seem to be generally safe.

4.
Zhen Ci Yan Jiu ; 41(4): 369-372, 2016 Aug 25.
Artigo em Chinês | MEDLINE | ID: mdl-29071937

RESUMO

Neuropathic pain is one of the common chronic syndromes in clinical practice. It has been demonstrated that the chronic neuropathic pain and glial cells in the central nervous system are closely related to each other. When inducing analgesic effect in neuropathic pain, EA suppressed OX-42 labeled activation of microgliacytes in dorsal horns of the spinal cord, down-regulated release of nitric oxide (NO), expression of P 2 X4 receptor, intracellular mitogen-activated protein kinase (MAPK), extracellular regulated protein kinases (ERK), proinflammatory cytokines IL-1 ß, IL-6, TNF-α, interferon (IF)-γ and up-regulated neurotrophin-3 expression in neuropathic pain rats. In regard to spinal astrocytes, acupuncture suppressed peripheral nerve injury induced activation of GFAP-labeled astrocytes, down-regulated the expression levels of macrophage inflammatory proteins (MIP)-1, MIP-1 ß, MIP-3 α, TNF-α mRNA and IL-1 ß mRNA, etc. in the dorsal horns of the spinal cord. Up to now, the underlying me-chanisms of acupuncture in regulating activities of glia cells, and interaction between neurons and glia cells, and the related pathways in the peripheral and central systems remain unclear. The effects of some related protein and gene expressions involving in acupuncture analgesia need being confirmed by adopting different approaches.


Assuntos
Analgesia por Acupuntura , Eletroacupuntura , Neuralgia/terapia , Neuroglia/metabolismo , Animais , Humanos , Interleucina-1beta/genética , Interleucina-1beta/metabolismo , Neuralgia/genética , Neuralgia/metabolismo , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo
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