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https://www.readbyqxmd.com/read/30218809/bu-yang-huan-wu-decoction-prevents-reperfusion-injury-following-ischemic-stroke-in-rats-via-inhibition-of-hif-1-%C3%AE-vegf-and-promotion-%C3%AE-enac-expression
#1
Zhen-Zhen Chen, Xin Gong, Qi Guo, Hui Zhao, Lei Wang
ETHNOPHARMACOLOGICAL RELEVANCE: Bu Yang Huan Wu Decoction (BYHW) is a famous traditional Chinese medicine (TCM) formula used in China for the treatment of cerebral ischemic stroke. But the protective effects and underlining mechanisms of BYHW remain unclear. AIM OF THE STUDY: This study was designed to investigate the protective effects and underlining signaling mechanisms of BYHW on brain tissues in a rat model of cerebral ischemic reperfusion (I/R) injury. MATERIALS AND METHODS: Liquid chromatography was used to verify the composition of BYHW...
September 12, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/30215283/select-hyperacute-complications-of-ischemic-stroke-cerebral-edema-hemorrhagic-transformation-and-orolingual-angioedema-secondary-to-intravenous-altepase
#2
Barak Bar, Jose Biller
Remarkable advances have occurred in the management of acute ischemic stroke especially in regards to reperfusion treatments. With advances in reperfusion treatments come the risk of complications associated with these treatments. Areas covered: The paper focuses on three acute complications that can occur in the setting of acute ischemic stroke: cerebral edema, hemorrhagic transformation, and orolingual angioedema following administration of alteplase, a recombinant tissue plasminogen activator. Predictors of the development of these complications are reviewed...
September 14, 2018: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/30186497/activation-of-epha4-induced-by-ephrina1-exacerbates-disruption-of-the-blood-brain-barrier-following-cerebral-ischemia-reperfusion-via-the-rho-rock-signaling-pathway
#3
Fangbin Chen, Zhiyang Liu, Wei Peng, Zhiqin Gao, Hui Ouyang, Tongjun Yan, Songbai Ding, Zhankui Cai, Bin Zhao, Longjin Mao, Zhiyong Cao
Vascular dementia (VD) is a syndrome characterized by progressive cognitive decline. According to previous studies, stroke is considered to be a risk factor for VD. The disruption of the blood-brain barrier (BBB) is pivotal to the pathology of stroke, as it contributes to post-stroke inflammation and edema. It has been reported that the Eph/Ephrin signaling pathway serves an important role in central nervous system injury. However, the role of EphrinA1/EphA4 signaling in BBB damage following ischemic stroke has not yet been reported...
September 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/30173122/a-facile-approach-for-synthesis-of-nano-ceo-2-particles-loaded-co-polymer-matrix-and-their-colossal-role-for-blood-brain-barrier-permeability-in-cerebral-ischemia
#4
Yongtao Gao, Xiaobing Chen, Honglin Liu
A prospective resource of pharmacological treatment of ischemic brains stroke is rapid interference using potential neuroprotective materials. Cerium oxide nanoparticles have been shown to defend against blood brain barrier damage in cerebral ischemic brain stroke. While cerium oxide nanoparticles is highly permeable across the blood-brain barrier and also these nanoparticles are effective antioxidants, due to its ability to either donate or obtain electrons with alternative +3 and +4 valence states. This oxidation state of cerium oxide has shown efficiency in neutralizing generated free radicals in biological systems has been explored action for cerebral ischemic brain stroke...
October 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/30165043/potential-role-of-myo-inositol-to-improve-ischemic-stroke-outcome-in-diabetic-mouse
#5
Heidi Villalba, Kaushik Shah, Thamer H Albekairi, Ali E Sifat, Bhuvaneshwar Vaidya, Thomas J Abbruscato
Brain edema is one of the critical factors causing hightened disability and mortality in stroke patients, which is exaggerated further in diabetic patients. Organic osmolytes could play a critical role in the maintenance of cytotoxic edema. The present study was aimed to assess the role of myo-inositol, an organic osmolyte, on stroke outcome in diabetic and non-diabetic animals. In situ brain perfusion and acute brain slice methods were used to assess transport of myo-inositol across the blood-brain barrier and uptake by brain cells using non-diabetic (C57BL/6) and diabetic (streptozotocin-induced) mice, respectively...
August 27, 2018: Brain Research
https://www.readbyqxmd.com/read/30154712/corrigendum-20-hete-inhibition-by-het0016-decreases-the-blood-brain-barrier-permeability-and-brain-edema-after-traumatic-brain-injury
#6
Liyan Lu, Mingliang Wang, Xiaoer Wei, Wenbin Li
[This corrects the article DOI: 10.3389/fnagi.2018.00207.].
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/30132506/cannabinoid-receptor-2-agonist-attenuates-blood%C3%A2-brain-barrier-damage-in-a-rat-model-of-intracerebral-hemorrhage-by-activating-the-rac1-pathway
#7
Zhe Wang, Yongfu Li, Shuangyong Cai, Rui Li, Guanbo Cao
Blood‑brain barrier (BBB) disruption and consequent edema formation are the most common brain injuries following intracerebral hemorrhage (ICH). Endocannabinoid receptors can alter the permeability of various epithelial barriers and have potential neuroprotective effects. The present study aimed to explore whether the selective cannabinoid receptor 2 (CNR2) agonist, JWH133, can ameliorate BBB integrity and behavioral outcome by activating Ras‑related C3 botulinum toxin substrate 1 (Rac1) following ICH...
August 22, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/30127119/limb-remote-ischemic-postconditioning-protects-integrity-of-the-blood-brain-barrier-after-stroke
#8
Juan Li, Xiao-Song Hu, Fang-Fang Zhou, Shuai Li, You-Sheng Lin, Wen-Qian Qi, Cun-Fang Qi, Xiao Zhang
Integrity of the blood-brain barrier structure is essential for maintaining the internal environment of the brain. Development of cerebral infarction and brain edema is strongly associated with blood-brain barrier leakage. Therefore, studies have suggested that protecting the blood-brain barrier may be an effective method for treating acute stroke. To examine this possibility, stroke model rats were established by middle cerebral artery occlusion and reperfusion. Remote ischemic postconditioning was immediately induced by three cycles of 10-minute ischemia/10-minute reperfusion of bilateral hind limbs at the beginning of middle cerebral artery occlusion reperfusion...
September 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/30121327/the-membrane-mesenchymal-stem-cell-derived-conditioned-medium-exerts-neuroprotection-against-focal-cerebral-ischemia-by-targeting-apoptosis
#9
Masoumeh Faezi, Solmaz Nasseri Maleki, Nahid Aboutaleb, Mahin Nikougoftar
OBJECTIVE: The mesenchymal stem cells derived from human amniotic membrane have the ability to secrete and release some factors that can promote the repair of damaged tissues. This secretome contains proteins and factors that reduce apoptosis and increase angiogenesis in the ischemia/reperfusion models. The present study was conducted to determine whether this secretome provides protection against transient focal cerebral ischemia. MATERIALS AND METHODS: A rat model of focal cerebral ischemia was established through middle cerebral artery occlusion (MCAO) for 60 min and 24 h reperfusion...
August 16, 2018: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/30096509/adrenomedullin-reduces-secondary-injury-and-improves-outcome-in-rats-with-fluid-percussion-brain-injury
#10
Wei Gao, Ying-Nan Ju, Jian-Feng Chen, Qiang Zhou, Chun-Yu Song, Yue-Zhen Wang, Hong-Ling Cao, Wan-Chao Yang
OBJECTIVE: Traumatic brain injury (TBI) is a devastating neurologic injury and remains a major cause of death in the world. Secondary injury after TBI is associated with long-term disability in patients with TBI. This study evaluated adrenomedullin (AM) on secondary injury and neurologic functional outcome in rats after TBI. METHODS: Forty-eight Sprague Dawley rats were randomly assigned into 3 groups: sham, TBI, and TBI with AM groups. TBI was induced by fluid percussion injury, and AM was intravenously injected...
August 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/30093209/fullerenol-nanoparticles-decrease-blood-brain-barrier-interruption-and-brain-edema-during-cerebral-ischemia-reperfusion-injury-probably-by-reduction-of-interleukin-6-and-matrix-metalloproteinase-9-transcription
#11
Mahsa Sarami Foroshani, Zeinab Sadat Sobhani, Mohammad Taghi Mohammadi, Masiha Aryafar
BACKGROUND: The present study aimed to examine the protective role of fullerenol nanoparticles against blood-brain barrier (BBB) interruption and brain edema during cerebral ischemia-reperfusion injury probably by reduction of interleukin-6 (IL-6) and matrix metalloproteinase-9 (MMP-9) transcription. METHODS: The male Wistar rats (weighting 280-320 g) were randomly assigned into four groups as follows: sham, control ischemic, pretreated ischemic, and posttreated ischemic groups...
August 6, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/30092249/hippo-yap-signaling-pathway-mitigates-blood-brain-barrier-disruption-after-cerebral-ischemia-reperfusion-injury
#12
Pian Gong, Zhan Zhang, Changlin Zou, Qi Tian, Xuemei Chen, Michael Hong, Xi Liu, Qianxue Chen, Zhou Xu, Mingchang Li, Jian Wang
Ischemia/reperfusion (I/R) injuries commonly lead to breakdown of the blood-brain barrier (BBB). Restoration of the BBB can relieve neurologic damage caused by I/R injuries. The Hippo/YAP signaling pathway mediates cell proliferation, regulated cell death, and differentiation in various organisms and has been shown to participate in the restoration of the heart after I/R. In this study, we investigated whether the Hippo/YAP pathway plays a role in I/R injury in brain, especially in regard to I/R-induced BBB breakdown...
August 6, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/30087588/erbb4-preserves-blood-brain-barrier-integrity-via-the-yap-pik3cb-pathway-after-subarachnoid-hemorrhage-in-rats
#13
Huan Qian, Zhangqi Dou, Wu Ruan, Pingyou He, John H Zhang, Feng Yan
Studies have suggested that blood-brain barrier (BBB) disruption contributes to the pathogenesis of early brain injury after subarachnoid haemorrhage (SAH). Activation of the receptor tyrosine kinase ErbB4 can cause intramembrane proteolysis and release a soluble intracellular domain (ICD) that modulates transcription in the nucleus. This study was carried out to investigate the potential roles of ErbB4 in preserving BBB integrity after experimental SAH, as well as the underlying mechanisms of its protective effects...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/30086289/pathophysiology-and-treatment-of-cerebral-edema-in-traumatic-brain-injury
#14
REVIEW
Ruchira M Jha, Patrick M Kochanek, J Marc Simard
Cerebral edema (CE) and resultant intracranial hypertension are associated with unfavorable prognosis in traumatic brain injury (TBI). CE is a leading cause of in-hospital mortality, occurring in >60% of patients with mass lesions, and ∼15% of those with normal initial computed tomography scans. After treatment of mass lesions in severe TBI, an important focus of acute neurocritical care is evaluating and managing the secondary injury process of CE and resultant intracranial hypertension. This review focuses on a contemporary understanding of various pathophysiologic pathways contributing to CE, with a subsequent description of potential targeted therapies...
August 4, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/30083976/evaluation-of-neuroprotective-effects-of-insulin-on-immuno-inflammatory-and-systemic-disorders-induced-by-kaliotoxin-a-kv1-3-channel-blocker
#15
Zahida Taibi-Djennah, Marie-France Martin-Eauclaire, Fatima Laraba-Djebari
OBJECTIVE: Kaliotoxin2 (KTX2) is a highly selective blocker of voltage-dependent potassium channels Kv1.3 containing 37 amino acid residues. It is purified from Androctonus australis scorpion venom. The binding of KTX2 to its targets is able to alter the neuronal excitability leading to neurological disorders, accompanied by an inflammatory response. In brain, activation of insulin receptor signaling pathway by insulin induces current suppression and concomitant tyrosine phosphorylation of Kv1...
October 2018: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/30082532/immune-tolerance-therapy-a-new-method-for-treatment-of-traumatic-brain-injury
#16
REVIEW
Ruo-Yang Feng, Qian Chen, Wei-Jian Yang, Xiao-Guang Tong, Zhi-Ming Sun, Hua Yan
Objective: Due to the special anatomical structure and pathophysiological mechanism of the central nervous system (CNS), there is a big difference between the repair of brain injury and other systems of the body. More and more evidence shows that targetedly reducing the autoimmune response of brain tissue without affecting the immune function in other parts of the body will be the best optimized treatment for brain injury. Data Sources: This review was based on data in articles published in PubMed up to June 5, 2017, with the following keywords: "immune tolerance", "traumatic brain injury", and "central nervous system"...
August 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/30081051/involvement-of-the-p38-mapk-signaling-pathway-in-overexpression-of-matrix-metalloproteinase-9-during-the-course-of-brain-edema-in-1-2-dichloroethane-intoxicated-mice
#17
Xiaoxia Jin, Yingjun Liao, Xiaoqiong Tan, Jingjing Guo, Gaoyang Wang, Fenghong Zhao, Yaping Jin
Accumulated data have revealed that subacute poisoning of 1,2-dichloroethane (1,2-DCE), an industrial solvent used in some countries can cause encephalopathy, in which brain edema is the main pathological change. However, the underlying mechanisms are unclear. In the present study, we hypothesized that the p38 MAPK (p38) signaling pathway could be activated in 1,2-DCE-intoxicated mice, which in turn stimulates transcription factors, such as nuclear factor-κB (NF-κB) and activator protein-1 (AP-1), and then enhances the expression of proinflammatory factors, including matrix metalloproteinase-9 (MMP-9), finally leading to blood-brain barrier (BBB) disruption and brain edema formation...
August 3, 2018: Neurotoxicology
https://www.readbyqxmd.com/read/30061822/20-hete-inhibition-by-het0016-decreases-the-blood-brain-barrier-permeability-and-brain-edema-after-traumatic-brain-injury
#18
Liyan Lu, Mingling Wang, Xiaoer Wei, Wenbin Li
Recent studies have implicated 20-HETE as a vasoconstrictive mediator in trauma, the purpose of this study was to determine whether administration of HET0016, the 20-HETE inhibitor, could protect neurons from trauma and the effect of HET0016 on the blood-brain barrier (BBB) and brain edema in experimental traumatic brain injury (TBI). Rat models with TBI were established. Brain edema was measured according to the wet and dry weight method at 3, 24, and 72 h after injury. The BBB permeability was quantified by dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI)...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/30060228/neuropathology-of-a-case-with-fatal-car-t-cell-associated-cerebral-edema
#19
Matthew Torre, Isaac H Solomon, Claire L Sutherland, Sarah Nikiforow, Daniel J DeAngelo, Richard M Stone, Henrikas Vaitkevicius, Ilene A Galinsky, Robert F Padera, Nikolaus Trede, Sandro Santagata
Chimeric antigen receptor (CAR) T cells are a new and powerful class of cancer immunotherapeutics that have shown potential for the treatment of hematopoietic malignancies. The tremendous promise of this approach is tempered by safety concerns, including potentially fatal neurotoxicity, sometimes but not universally associated with cytokine release syndrome. We describe the postmortem examination of a brain from a 21-year-old patient with relapsed pre-B cell acute lymphoblastic leukemia (ALL) who died from fulminant cerebral edema following CAR T-cell infusion...
July 6, 2018: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/30053086/molecular-hydrogen-prevents-social-deficits-and-depression-like-behaviors-induced-by-low-intensity-blast-in-mice
#20
Yasushi Satoh, Yoshiyuki Araki, Masashi Kashitani, Kiyomasa Nishii, Yasushi Kobayashi, Masanori Fujita, Shinya Suzuki, Yuji Morimoto, Shinichi Tokuno, Gentaro Tsumatori, Tetsuo Yamamoto, Daizoh Saitoh, Toshiaki Ishizuka
Detonation of explosive devices creates blast waves, which can injure brains even in the absence of external injuries. Among these, blast-induced mild traumatic brain injury (bmTBI) is increasing in military populations, such as in the wars in Afghanistan, Iraq, and Syria. Although the clinical presentation of bmTBI is not precisely defined, it is frequently associated with psycho-neurological deficits and usually manifests in the form of poly-trauma including psychiatric morbidity and cognitive disruption...
September 1, 2018: Journal of Neuropathology and Experimental Neurology
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