Painful stimuli elicit first-line reflexive defensive reactions and, in many cases, also evoke second-line recuperative behaviors, the latter of which reflects the sensing of tissue damage and the alleviation of suffering. The lateral parabrachial nucleus (lPBN), composed of external- (elPBN), dorsal- (dlPBN), and central/superior-subnuclei (jointly referred to as slPBN), receives sensory inputs from spinal projection neurons and plays important roles in processing affective information from external threats and body integrity disruption. However, the organizational rules of lPBN neurons that provoke diverse behaviors in response to different painful stimuli from cutaneous and deep tissues remain unclear.
View Article and Find Full Text PDFObjective: To observe the intervention effects of Tiaobu Xinshen Recipe (, TXR) on patients with mild cognitive impairment caused by Alzheimer's disease (MCI-AD).
Methods: Totally 88 MCI-AD patients with syndrome of Xin (Heart) and Shen (Kidney) deficiency were assigned to the experimental group (47 cases, treated with TXR) and the control group (41 cases, treated with donepezil hydrochloride) using a random number table. Final recruited qualified patients were 44 cases in the experimental group and 39 cases in the control group.
Tripchlorolide (T4), an extract of the natural herb Tripterygium wilfordii Hook F, has been found to possess anti-inflammatory and immunosuppressive actions. In the current study, these actions were evaluated in experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis by scoring the clinical signs, observing the infiltration of inflammatory cells and myelin sheath in the lumbar spinal cord of EAE mice. The results demonstrated that T4 (at a dose of 40 μg/kg) significantly reduced the severity of EAE and slowed down the ongoing EAE.
View Article and Find Full Text PDFThe present study was to record and separate the voltage-gated calcium channel currents (VGCCs) in primary cultured hippocampal neurons. An improved method is described for efficient and stable recording of VGCCs from primary cultured hippocampal neurons. The procedure allows the obtained hippocampal neurons overcome the defects from acutely isolated hippocampal neurons and currents do not rundown apparently after 20 min of membrane rupture.
View Article and Find Full Text PDFIntroduction: Spinal meningoceles are uncommon entities, mostly associated with neurofibromatosis type 1 (NF-1). Their intrusion into the thoracic cavity, which compresses lung tissue, is quite often mistaken as a "pleural effusion." The withdrawal of a large amount of "pleural effusion" can lead to the intracranial hypotension syndrome (IHS), herniation, or even death.
View Article and Find Full Text PDFIt is well established that the presence of soluble amyloid-beta protein (Abeta) correlates with the severity of dementia in Alzheimer's disease (AD). Several lines of evidence indicate that cyclic AMP responsive element binding protein (CREB) and protein kinase A (PKA) are involved in soluble Abeta-trigged disruption of synaptic plasticity in early AD. Previously we demonstrated the beneficial effects of ginsenoside Rg1 on Abeta-induced neuronal insult.
View Article and Find Full Text PDFRecent research has focused on soluble oligomeric assemblies of beta-amyloid peptides (Abeta) as the proximate cause of neuroinflammation, synaptic loss, and the eventual dementia associated with Alzheimer's disease (AD). In this study, tripchlorolide (T4), an extract of Tripterygium wilfordii Hook. F (TWHF), was studied as a novel agent to suppress neuroinflammatory process in microglial cells and to protect neuronal cells against microglia-mediated oligomeric Abeta toxicity.
View Article and Find Full Text PDFTo explore the effect of ginsenoside Rb1 on JNK/p38 MAPK in the process of beta-amyloid peptide (25-35) -induced tau protein hyperphosphorylation, Western blotting and immunocytochemical stain were performed to observe the tau protein phosphorylation and the expression of JNK/p38 MAPK. The level of tau protein phosphorylation in the sites of Ser396 , Ser199/202 and Thr205 increased after rat cortical neurons exposed to 20 micromol x L(-1) Abeta25-35, meanwhile the level of JNK/p38 MAPK also increased after Abeta25-35 treatment for 12 h. Pretreatment with several doses of ginsenoside Rbl markedly attenuated tau protein hyperphosphorylation and the expression of JNK/p38 MAPK.
View Article and Find Full Text PDFThis study is to explore the effect of ginsenoside Rb1 on the process of beta-amyloid peptide(25-35) (Abeta(25-35)) -induced hyperphosphorylation of tau protein, and on the level of cyclin-dependent kinase 5 activator, p25/p35. Western blotting and/or immunocytochemical staining were used to detect the levels of phosphorylation of tau protein at the sites of Thr205, Ser396, Ser404 in hippocampal neurons, cdk5 and p25/p35. After exposure to Abeta(25-35) (20 micromol x L(-1)) for 12 h, the levels of tau protein phosphorylation at the sites of Thr205, Ser396, Ser404 were enhanced, the level of p25 was increased, but the level of protein cdk5 was not changed markedly.
View Article and Find Full Text PDFAim: To explore the protective effect of propyl gallate against neuronal injury in the boundary zone of the infarction area in the rat cerebral ischemia-reperfusion model and its possible mechanism.
Methods: Transient focal ischemia induced by middle cerebral artery occlusion in the rats was established by ligation of the left internal carotid artery for 2 h. Rats were treated by propyl gallate with different doses (23.
Aim: To explore the effect and the possible mechanism of ginsenoside Rb1 on beta-amyloid peptide (beta-AP)(25-35) -induced tau protein hyperphosphorylation in cortical neurons.
Methods: Western blotting and immunocytochemical staining were used to detect tau phosphorylation level, total tau and glycogen synthase kinase-3beta (GSK-3beta) in cortical neurons.
Results: After exposure to beta-AP(25-35) (20 micromol x L(-1)) for 12 h, the levels of tau protein phosphorylation in the sites of Ser 396, Ser 199/202, Thr 231 and total tau were raised.
The present study was aimed to investigate the effects of ginsenoside Rb1 on okadaic acid (OA)-induced Tau hyperphosphorylation in hippocampal neurons of Sparague-Dawley rat and to explore its possible mechanism. Animals were randomly divided into four groups. Group 1 received dimethysulphoxide (DMSO) injection (vehicle group), group 2 only received OA injection (OA group), group 3 was pretreated with Rb1 and then received OA injection (Rb1 pretreatment group), and the group 4 was an intact control group.
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