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Neurological Research

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https://www.readbyqxmd.com/read/29157166/sub-chronic-boldine-treatment-exerts-anticonvulsant-effects-in-mice
#1
Leila Moezi, Siranoush Yahosseini, Akram Jamshidzadeh, Mona Dastgheib, Fateme Pirsalami
OBJECTIVES: Boldine is an aporphine alkaloid which is best known for its antioxidant, anti-inflammatory and cytoprotective characteristics. It seems that all these activities are related to boldine ability to scavenge reactive free radicals. As indicated by several pieces of evidence, free radicals generation are involved in initiation and propagation of epilepsy. METHODS: In this study, we investigated the sub-chronic effects of boldine on intraperitoneal and intravenous pentylenetetrazole (PTZ) models and electroshock-induced seizure in mice...
November 20, 2017: Neurological Research
https://www.readbyqxmd.com/read/29155646/combination-treatment-of-docosahexaenoic-acid-dha-and-all-trans-retinoic-acid-atra-inhibit-il-17-and-ror%C3%AE-t-gene-expression-in-pbmcs-of-patients-with-relapsing-remitting-multiple-sclerosis
#2
Ateke Mousavi Nasl-Khameneh, Abbas Mirshafiey, Abdorreza Naser Moghadasi, Reza Chahardoli, Maryam Mahmoudi, Karim Parastouei, Mir Saeed Yekaninejad, Ali Akbar Saboor-Yaraghi
OBJECTIVES: Multiple sclerosis (MS) is a demyelinating disorder with a complex autoimmune pathophysiology. Its initiation and progression correlate with IL-17 and the related transcription factor, RORγt. All-trans retinoic acid (ATRA) is a bioactive derivative of vitamin A, and docosahexaenoic acid (DHA) is an active metabolite of omega-3 fatty acid; both have immunomodulatory effects in many immune disorders. This study investigated the effects of DHA and ATRA individually and in combination on IL-17 and RORγt gene expression in peripheral blood mononuclear cells (PBMCs) of relapsing-remitting MS (RRMS) patients who were receiving interferon beta (IFN-β)...
November 18, 2017: Neurological Research
https://www.readbyqxmd.com/read/29126372/exercise-improves-recognition-memory-and-synaptic-plasticity-in-the-prefrontal-cortex-for-rats-modelling-vascular-dementia
#3
Juntao Dong, Jingpu Zhao, Yangyang Lin, Huiying Liang, Xiaokuo He, Xiuyuan Zheng, Minghong Sui, Zhiqiang Zhuang, Tiebin Yan
OBJECTIVES: Functional electrical stimulation (FES) may induce involuntary exercise and make beneficial effects on vascular dementia (VD) by strengthening the BDNF-pCREB-mediated pathway and hippocampal plasticity. Whether FES improves recognition memory and synaptic plasticity in the prefrontal cortex (PFC) was investigated by establishing a VD model. METHODS: The VD rats were administered with two weeks of voluntary exercise, forced exercise, or involuntary exercise induced with FES...
November 10, 2017: Neurological Research
https://www.readbyqxmd.com/read/29125072/predictors-of-dependence-after-mca-ischemic-stroke-submitted-to-thrombolysis
#4
Renata Dal-Prá Ducci, Marcos Christiano Lange, Francisco Manoel Branco Germiniani, Viviane de Hiroki Flumignan Zétola
OBJECTIVES: Stroke is one of the most common causes of disability-adjusted life years worldwide. The aim of this study is to identify variables associated with dependence at 3 months and also after the first 3 months after the first-ever ischemic stroke (IS) in middle cerebral artery (MCA) territory submitted to intravenous thrombolysis (IVT). METHODS: A single-center cohort study of patients with first-ever MCA IS treated with IVT at the Hospital de Clínicas, Universidade Federal do Paraná, was followed over 5 years...
November 10, 2017: Neurological Research
https://www.readbyqxmd.com/read/29125058/edaravone-attenuates-oxidative-stress-induced-by-chronic-cerebral-hypoperfusion-injury-role-of-erk-nrf2-ho-1-signaling-pathway
#5
Dandan Zhang, Yining Xiao, Peiyuan Lv, Zhenjie Teng, Yanhong Dong, Qianqian Qi, Zhijuan Liu
Objectives The potential protective effects and mechanisms of edaravone have not been well elucidated in vascular dementia (VaD) induced by chronic cerebral hypoperfusion (CCH). The aim of this study was to investigate whether edaravone could improve cognitive damage in rats induced by CCH, and whether the effects of edaravone were associated with ERK/Nrf2/HO-1 signaling pathway. Methods CCH was induced by bilateral common carotid arteries occlusion (BCCAO). Sprague-Dawley (SD) rats were randomly divided into four groups: sham (sham-operated) group, vehicle (BCCAO + normal saline) group, edaravone3...
November 10, 2017: Neurological Research
https://www.readbyqxmd.com/read/29105602/a-new-low-profile-visualized-intraluminal-support-lvis-device-lvis-blue-laboratory-comparison-between-old-and-new-lvis
#6
Joonho Chung, Yoshikazu Matsuda, Jessica Nelson, Kiffon Keigher, Demetrius K Lopes
Objectives The Low-profile Visualized Intraluminal Support (LVIS) device is a flexible intracranial stent. The first generation of this system had significant challenges in consistently providing good wall apposition and aneurysm neck coverage. A new modified LVIS, LVIS Blue (Blue), has been developed to address these issues. The purpose of this study is to report a laboratory comparison of wall apposition and aneurysm neck coverage between the original LVIS and Blue. Methods In bench-top experiments, we noted the visual appearance of the devices and evaluated changes in stent cell angles, neck coverage surface area (%), and stent cell crossing profile for microcatheters using a fusiform aneurysm model...
November 5, 2017: Neurological Research
https://www.readbyqxmd.com/read/29105578/role-of-perforin-secretion-from-cd8-t-cells-in-neuronal-cytotoxicity-in-multiple-sclerosis
#7
Daidi Zhao, Fuqiang Feng, Cong Zhao, Fang Wu, Chao Ma, Yanan Bai, Jun Guo, Hongzeng Li
OBJECTIVES: Multiple sclerosis (MS) is the most prevalent autoimmune disease of the central nervous system, and is characterized by inflammation and myelin damage. The immune system initiates the autoimmune response, although the mechanisms of neuronal damage have not been elucidated. The purpose of the present study was to investigate autoreactive CD4+ and CD8(+) T lymphocytes, in conjunction with other inflammatory cells and cytokines in active MS lesions. METHODS: EAE animal models was established by plantar injections of MBP (200 μg per rat)...
November 5, 2017: Neurological Research
https://www.readbyqxmd.com/read/29100486/an-ecv304-monoculture-model-for-permeability-assessment-of-blood-brain-barrier
#8
Shu Yang, Hong Jin, Zhigang Zhao
OBJECTIVE: ECV304/C6 co-culture model is a widely used tool for BBB studies. However, cell source may influence the establishment of co-culture model and some C6 cells could damage the barrier integrity. Here, we established an ECV304 monoculture model and evaluated it in the respect of tightness, tight junction proteins and discriminative brain penetration. METHODS: The tightness of ECV304 cell layers was evaluated by the measurement of permeability to hydrophilic marker Lucifer yellow...
November 3, 2017: Neurological Research
https://www.readbyqxmd.com/read/29088985/anticonvulsant-effect-of-gentamicin-on-the-seizures-induced-by-kainic-acid
#9
Yuxiao Zhao, Ziyi Wang, Wenwen Lao, Ping Kuang, Nan Jiang, Tao Yin, Weide Lin, Hongyan Zhu, Yonghua Ji
OBJECTIVE:  Epilepsy is a chronic neurological disorder affecting approximately 0.5-2% of the population worldwide. Gentamicin (GM) is an aminoglycoside antibiotic used to treat several types of bacterial infections. We investigate whether the administration of GM can reduce seizures in temporal lobe epilepsy (TLE). METHODS: The animal model of temporal lobe epilepsy (TLE) was established by kainic acid (KA) intrahippocampal injection. Behavioral test and Electroencephalography (EEG) recordings were performed to detect the effects of GM on the seizures triggered by KA injection in rats...
October 31, 2017: Neurological Research
https://www.readbyqxmd.com/read/29072550/association-of-glutathione-s-transferases-m1-p1-and-t1-variations-and-risk-of-late-onset-alzheimer-s-disease
#10
Zahra Jafarian, Kioomars Saliminejad, Koorosh Kamali, Mina Ohadi, Ali Kowsari, Leila Nasehi, Hamid Reza Khorram Khorshid
OBJECTIVE: Late-onset Alzheimer's disease (AD) is a genetically heterogeneous neurodegenerative disorder. Associations of the glutathione S-transferases (GSTs) polymorphisms with the risk factors for AD have not been definitely confirmed. We investigated the association of GSTM1 and GSTT1 null deletion and GSTP1 313 A/G polymorphisms and the risk of AD in an Iranian population. METHODS: The case group consisted of 280 individuals with AD and the control group included 168 age-matched healthy individuals...
October 26, 2017: Neurological Research
https://www.readbyqxmd.com/read/29057717/craniovertebral-fixation-%C3%A2-a-new-technique-of-occipital-cervical-fixation
#11
Sushil Patkar
BACKGROUND: Craniovertebral instability following transoral odontoid excision is usually treated by posterior occipital-cervical fixation using occipital plate and cervical lateral mass fixation with screw rod construct. A patient previously operated for basilar invagination had postoperative infection of both the transoral wound and the posterior implant site which needed removal of the posterior implant earlier. CLINICAL PRESENTATION: The patient presented with severe neck pain, myelopathy, and chronic discharging sinus in the posterior lower aspect the previous neck surgery wound...
October 23, 2017: Neurological Research
https://www.readbyqxmd.com/read/29057715/structural-and-functional-alterations-of-the-heart-in-parkinson-s-disease
#12
Jesús Piqueras-Flores, Ana López-García, Álvaro Moreno-Reig, Alicia González-Martínez, Amalia Hernández-González, Julia Vaamonde-Gamo, Alfonso Jurado-Román
Parkinson's disease (PD) patients have most frequently heart failure. The cause of this increased prevalence is not known. We designed a study to assess the cardiac function and cardiac structure in patients with PD compared to a control group. METHODS: Cross-sectional study with 50 PD patients and 50 healthy matched controls. We performed electro and echocardiograms to all patients and controls. The measurements were blind. In addition, we performed a neurological assessment. RESULTS: PD patients had higher left ventricular mass index (114...
October 23, 2017: Neurological Research
https://www.readbyqxmd.com/read/29048255/quality-of-life-in-patients-with-unilateral-vestibular-schwannoma-on-wait-and-see-strategy
#13
P C Klersy, F Arlt, M Hofer, J Meixensberger
OBJECTIVE: A 'wait and see' strategy is an option when managing patients with small vestibular schwannomas (VS). A risk of growth and worsening of hearing may influence a patient's daily quality of life (QOL). Therefore, the present study focused on QOL parameters in patients who are on a 'wait and see' strategy following magnetic resonance imaging (MRI)-based diagnosis of small unilateral VS. PATIENTS AND METHODS: Sixty-five patients (mean age 64.4 years; male:female, 32:33) who suffered from a small unilateral VS (9...
October 19, 2017: Neurological Research
https://www.readbyqxmd.com/read/29019708/effects-of-long-term-exercise-and-low-level-inhibition-of-gabaergic-synapses-on-motor-control-and-the-expression-of-bdnf-in-the-motor-related-cortex
#14
Takahiro Inoue, Shuta Ninuma, Masataka Hayashi, Akane Okuda, Tadayoshi Asaka, Hiroshi Maejima
Objectives Brain-derived neurotrophic factor (BDNF) plays important roles in neuroplasticity in the brain. The objective of this study was to examine the effects of long-term exercise combined with low-level inhibition of GABAergic synapses on motor control and the expression of BDNF in the motor-related cortex. Methods ICR mice were divided into four groups based on the factors exercise and GABAA receptor inhibition. We administered the GABAA receptor antagonist bicuculline intraperitoneally (0.25 mg/kg)...
October 11, 2017: Neurological Research
https://www.readbyqxmd.com/read/28988516/quinine-and-carbenoxolone-enhance-the-anticonvulsant-activity-of-some-classical-antiepileptic-drugs
#15
Javier Franco-Pérez, Joaquín Manjarrez-Marmolejo, Cesar Rodríguez-Balderas, Nelly Castro, Paola Ballesteros-Zebadua
Objective Quinine (QUIN) and carbenoxolone (CNX) elicit anticonvulsant effects typically characterized by the reduction of the epileptiform activity as well as changes in behavioral parameters related to seizures. Therefore, the aim of this study was to analyze the effects of these molecules on the anticonvulsant activity of some classical antiepileptic drugs. Methods Male Wistar rats were used. Valproate (VPA), phenytoin (PHT), or carbamazepine (CBZ) was administered at sub-therapeutic doses for intraperitoneal via...
October 8, 2017: Neurological Research
https://www.readbyqxmd.com/read/28954583/the-effect-of-local-extremely-low-frequency-magnetic-field-on-student-sleepiness
#16
Fatemeh Ayoobi, Ali Shamsizadeh, Seyed Ali Shafiei
Objectives Lack of high-quality sleep causes serious side effects. The current study aimed to investigate the impact of local extremely low frequency magnetic field (ELF-MF) on sleep and drowsiness in healthy young adults. Methods Sixty-five young adults (32 males and 31 females, aged 18-24, participated voluntarily in this randomized crossover clinical trial. 200 microTesla MF (3 minutes duration) at three frequencies (10, 14 and 18 Hz) was applied to the skull in areas C3, Cz and C4, respectively. The Stanford Sleepiness Scale (SSS) or Consciousness Test (CT), Epworth Sleepiness Scale (ESS) and Peabody Picture Vocabulary Test were used to evaluate drowsiness, sleepiness, and reaction time...
September 27, 2017: Neurological Research
https://www.readbyqxmd.com/read/28948857/neuroprotective-effect-of-secreted-factors-from-human-adipose-stem-cells-in-a-rat-stroke-model
#17
Han Gil Seo, Youbin Yi, Byung-Mo Oh, Nam-Jong Paik
Objectives Recent evidence shows that stem cells exert neuroprotective effect through the secretion of immune modulatory, neurotrophic factors. We aimed to assess the neuroprotective effect of selected recombinant factors (RFs) detected in human adipose stem cell (hASC)-conditioned medium (CM), in a rat ischemic stroke model. Methods Ischemic stroke was induced in Sprague-Dawley rats using 2 h transient middle cerebral artery occlusion (MCAO). One hour after reperfusion, the vehicle (Dulbecco's modified Eagle medium; DMEM), concentrated CM, and selected RFs mixed with DMEM were administered intracerebroventricularly to each group (N = 14, 15, and 16, respectively)...
September 26, 2017: Neurological Research
https://www.readbyqxmd.com/read/28944745/obesity-a-possible-risk-factor-for-restless-legs-syndrome
#18
Demet Yildiz, Nilufer Buyukkoyuncu, Ahmet Kasim Kilic, Soner Cander, Abdülmecit Yıldız, Aygul Gunes, Meral Seferoglu, Sevda Erer Ozbek
AIM/BACKGROUND: Restless legs syndrome (RLS) is a frequent neurological and sleep disorder. Metabolic disorders are known to be related to sleep disorders. We prospectively evaluated whether obesity and its possible cofactors were related to the presence of RLS. MATERIALS AND METHODS: The study included 143 obese and 94 non-obese individuals. Obese patients had a BMI of 30 and over, while non-obese patients had a BMI lower than 30. Patients with arthritis and pregnancy were excluded but not those with diabetes mellitus...
September 25, 2017: Neurological Research
https://www.readbyqxmd.com/read/28936922/intraluminal-spindle-shaped-head-suture-induced-occlusion-of-middle-cerebral-artery-in-the-rats
#19
Ye Wu, Lan Hu, Xiaosheng Yang, Xuhui Wang, Liang Wan, Xuming Hua, Juan Cheng, Yi Li
OBJECTIVE: This study aimed to introduce a modified animal model of middle cerebral arterial occlusion (MCAO) through placement of intraluminal spindle-shaped head suture by comparing the traditional MCAO model. METHODS: A total of 60 male Spraque-Dawley (SD) rats were divided into two groups and MCAO was induced using spindle-shaped head suture or round head suture. The mortality, infarct volume, neurological function, success rate of the surgery, and stability of modeling were examined to evaluate the effectiveness of this model...
September 22, 2017: Neurological Research
https://www.readbyqxmd.com/read/28934903/reduced-rac1-activity-inhibits-cell-proliferation-and-induces-apoptosis-in-neurofibromatosis-type-2-nf2-associated-schwannoma
#20
Ying Wang, Bo Wang, Peng Li, Qi Zhang, Pinan Liu
Objective To study the function and potential mechanism of RAC1 inhibitors in NF2-associated schwannoma. Methods In this study, we the downregulation of RAC1 activity and tumor cell phenotypes by RAC1 inhibitor NSC23766 in vitro. And we further validated the anti-proliferation effect by this RAC1 inhibitor in subcutaneous xenograft tumor model and sciatic nerve model. Results Pharmacological inhibition of RAC1 could significantly inhibit the proliferation of both RT4 cells and human NF2-associated primary schwannoma cells by inducing apoptosis...
September 22, 2017: Neurological Research
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