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Current Neurovascular Research

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https://www.readbyqxmd.com/read/28412909/prolonged-perfusion-predicts-recurrent-ischemic-stroke-but-not-transient-ischemic-attack-in-patients-with-symptomatic-intracranial-stenosis
#1
Linfang Lan, Xinyi Leng, Vincent Ip, Thomas Leung, Yannie Soo, Jill Abrigo, Ka Sing Wong
BACKGROUND: Intracranial arterial stenosis (ICAS) is the dominant cause for ischemic stroke worldwide, with hemodynamic compromise as a crucial contributor. Prolonged perfusion is commonly observed in ICAS patients on CT perfusion (CTP) maps, while the clinical significance of this perfusion pattern has not been elucidated. METHODS: Patients having symptomatic ICAS of 50-99% stenosis with sustained downstream cerebral blood flow (CBF) were enrolled into this study...
April 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28393703/mir-106a-is-associated-with-diabetic-peripheral-neuropathy-through-the-regulation-of-12-15-lox-mediated-oxidative-nitrative-stress
#2
Yuanbo Wu, Dandan Xu, Xiang Zhu, Guangwei Yang, Mingshan Ren
BACKGROUND: Diabetic peripheral neuropathy (DPN) is a common complication of diabetes that with a complex pathogenesis. Study has reported that oxidative stress and nitrative stress were all involved in the DPN, however, the mechanism between them was still unclear. In the present study, we investigated whether miR-106a signaling regulated 12/15-Lipoxygenase (12/15-LOX) on oxidative/nitrative stress in DPN. METHODS: Dorsal root ganglion (DRG) was isolated from 10 healthy mice and 10 DPN mice...
April 4, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28393702/trem2-and-the-progression-of-alzheimer-s-disease
#3
Li Gao, Teng Jiang, Xiaoying Yao, Ling Yu, Xiaolan Yang, Yansheng Li
Alzheimer's disease (AD) is the most common form of dementia, which has been currently considered as a genetically complex disorder caused by a combination of environmental and genetic risk factors. Previous studies have reported that triggering receptor expressed on myeloid cells 2 (TREM2) gene represents a promising candidate gene for AD susceptibility and progression. Interestingly, recent findings further suggested that the association between TREM2 variants and AD risk was quite diverse among different ethnicities and populations...
April 4, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28356003/young-stroke-patients-treated-with-intravenous-thrombolysis-have-a-more-favorable-outcome-and-mortality-compared-with-older-patients
#4
Jijun Shi, Yongjun Cao, Shoujiang You, Zhichao Huang, Xia Zhang, Huihui Liu, Chun-Feng Liu
BACKGROUND: Previous clinical studies suggest that intravenous thrombolysis (IVT) with recombinant tissue plasminogen activator benefits stroke patients, but the efficacy of IVT in young stroke patients is not well-studied in China. OBJECTIVE: We compared the safety and efficacy of IVT with recombinant tissue plasminogen activator between Chinese young stroke patients (18-50 years old) and older patients (51-80 years old). METHODS: We analyzed data from the Soochow Stroke Registry for 373 stroke patients (18-50 years, n=74 vs...
March 27, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28356002/prognostic-parameters-for-symptomatic-intracranial-hemorrhage-after-intravenous-thrombolysis-in-acute-ischemic-stroke-in-an-asian-population
#5
Thanin Lokeskrawee, Sombat Muengtaweepongsa, Jayanton Patumanond, Somsak Tiamkao, Thanoot Thamangraksat, Phanyarat Phankhian, Polchai Pleumpanupatand, Paworamon Sribussara, Teeraparp Kitjavijit, Anake Supap, Weerawan Rattanaphibool, Jariya Prisiri
Symptomatic intracranial hemorrhage (sICH) is a major complication after intravenous thrombolysis leading to severe disability and death. The incidence was higher in Asian than in westernized countries. Prognostic factors across ethnicities are presumably different. Studies in Asian populations are limited. Clinical data from January 2008 to September 2016 in one provincial and four regional hospitals in the northern part of Thailand were retrospectively reviewed. Patients were those with acute ischemic stroke, to whom recombinant tissue plasminogen activator (rt-PA) had been prescribed...
March 27, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28356001/atomoxetine-protects-against-nmda-receptor-mediated-hippocampal-neuronal-death-following-transient-global-cerebral-ischemia
#6
Joon Ha Park, Yang Hee Kim, Ji Hyeon Ahn, Soo Young Choi, Seongkweon Hong, Sung Koo Kim, Il Jun Kang, Young-Myeong Kim, Tae-Kyeong Lee, Moo-Ho Won, Choong-Hyun Lee
BACKGROUND: Atomoxetine has been widely used for the treatment of attention-deficit/hyperactivity disorder. ATX has additional abilities such as antagonistic effects on the N-methyl-D-aspartate receptors (NMDARs) and benefit effects in some animal models of neurological disorders. However, there were few studies regarding protective effects and related mechanisms of ATX against cerebral ischemic insults. OBJECTIVE: The objective of this study is to investigate neuroprotection of ATX pretreatment and its mechanisms in the hippocampal cornu ammonis 1 (CA1) region following transient global cerebral ischemia in gerbils...
March 27, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28330334/late-onset-alzheimer%C3%A2-s-disease-novel-clinical-prospects-for-the-future
#7
Kenneth Maiese
No abstract text is available yet for this article.
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28294065/tetramethylpyrazine-facilitates-functional-recovery-after-spinal-cord-injury-by-inhibiting-mmp2-mmp9-and-vascular-endothelial-cell-apoptosis
#8
Jian-Zhong Hu, Xiao-Kai Wang, Yong Cao, Dong-Zhe Li, Tian-Ding Wu, Tao Zhang, Da-Qi Xu, Hong-Bin Lu
BACKGROUND: Spinal cord injury (SCI) is a major public health issue that leads to neurological dysfunctions and morbidities in patients. Tetramethylpyrazine (TMP) plays a neuroprotective role in SCI; however, the underlying mechanism has not been fully elucidated. Objective In the present study, we aimed to investigate the mechanisms and therapeutic effects of TMP on SCI. METHODS: A contusion SCI model was established that used a modified Allen's method. In the TMP group, TMP (200 mg/kg) was injected daily for 5 days post-injury, while in the Negative Control (NC) group, an equal volume of normal saline was injected...
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28294064/knockdown-of-c-c-chemokine-receptor-5-ccr5-is-protective-against-cerebral-ischemia-and-reperfusion-injury
#9
Edna Constanza Gómez Victoria, Eliana Cristina de Brito Toscano, Ana Clara de Sousa Cardoso, Daniele Gonçalves da Silva, Aline Silva de Miranda, Lucíola da Silva Barcelos, Michelle Adriane Sugimoto, Lirlândia Pires Sousa, Isabel Vieira de Assis Lima, Antônio Carlos Pinheiro de Oliveira, Fátima Brant, Fabiana Simão Machado, Mauro Martins Teixeira, Antônio Lúcio Teixeira, Milene Alvarenga Rachid
BACKGROUND: Stroke is the second leading cause of death and a major cause of disability of adults worldwide. Inflammatory processes are known to contribute to the pathophysiology of cerebral ischemia, especially following reperfusion. Chemokines and their receptors are involved in migration of leukocytes and have been implicated in pathogenesis of ischemic stroke. OBJECTIVE: In the present study, we investigated the effects of C-C chemokine receptor type 5 (CCR5) deficiency on neurological outcome, brain damage and expression of pro-inflammatory chemokines: chemokine (C-X-C motif) ligand 1 (CXCL1), chemokine (CC motif) ligand 3 (CCL3) and chemokine (C-C motif) ligand 5 (CCL5), and the brain-derived neurotrophic factor (BDNF)...
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28294063/cerebral-microbleeds-do-not-predict-hemorrhagic-transformation-in-acute-ischemic-stroke-patients-with-atrial-fibrillation-and-or-rheumatic-heart-disease
#10
Junfeng Liu, Deren Wang, Jie Li, Jing Lin, Yao Xiong, Bian Liu, Chenchen Wei, Bo Wu, Zhenxing Ma, Shihong Zhang, Ming Liu
Background and Purpose Cerebral microbleeds (CMBs) are known to be potential risk factors for intracerebral hemorrhage (ICH), but there is controversy on the relationship between CMBs and hemorrhagic transformation (HT) after ischemic stroke. Besides, the question regarding whether the relationship between CMBs and HT can be affected by antithrombotic drugs in acute stage of ischemic stroke has not yet reached a consensus. Methods 174 acute ischemic stroke patients with atrial fibrillation (AF) and/or rheumatic heart disease (RHD) were prospectively and consecutively enrolled in the study, of which 160 patients (mean 68...
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28294062/warming-up-to-new-possibilities-with-the-capsaicin-receptor-trpv1-mtor-ampk-and-erythropoietin
#11
Kenneth Maiese
BACKGROUND: Transient receptor potential (TRP) channels are a superfamily of ion channels termed after the trp gene in Drosophila that are diverse in structure and control a wide range of biological functions including cell development and growth, thermal regulation, and vascular physiology. Of significant interest is the transient receptor potential cation channel subfamily V member 1 (TRPV1) receptor, also known as the capsaicin receptor and the vanilloid receptor 1, that is a non-selective cation channel sensitive to a host of external stimuli including capsaicin and camphor, venoms, acid/basic pH changes, and temperature...
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28294061/the-association-of-mme-microrna-binding-site-polymorphism-with-risk-of-late-onset-alzheimer-s-disease-in-northern-han-chinese
#12
Chun-Xia Liu, Lin Tan, Fu-Rong Sun, Wei Zhang, Dan Miao, Meng-Shan Tan, Yu Wan, Chen-Chen Tan, Jin-Tai Yu, Lan Tan
Background Although amyloid β (Aβ) degradation has been normally implicated in the pathogenesis of late onset Alzheimer's disease (LOAD) through cellular biological studies, genetic studies linking Aβ degradation and LOAD are still not deeply investigated. Neprilysin (NEP), as one of the most crucial Aβ-degrading enzymes in AD, is the metalloendopeptidases which particularly participates in the monomeric Aβ species degradation. MicroRNAs (miRNAs) exert posttranscriptional dysregulation and their target sequence on the 3' untranslated regions (3'UTR) may be regulated by single nucleotide polymorphisms (SNPs)...
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28260507/tanshinone-iia-protects-hippocampal-neuronal-cells-from-reactive-oxygen-species-through-changes-in-autophagy-and-activation-of-phosphatidylinositol-3-kinase-protein-kinas-b-and-mechanistic-target-of-rapamycin-pathways
#13
Yingchun Zhu, Qiqiang Tang, Guopin Wang, Ruodong Han
BACKGROUND: Tanshinone IIA is a key active ingredient of danshen, which derived from the dried root or rhizome of Salviae miltiorrhizae Bge. The tanshinone IIA has protective effects against focal cerebral ischemic injury. However, the underlying mechanisms remain unclear. METHODS: An in vitro model of cerebral ischemia was established by subjecting cultures of hippocampal neuronal cells to oxygen-glucose deprivation followed by reperfusion (OGD/R). The probes of 5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein diacetate, acetyl ester (CM-H2DCFDA) and 5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolylcarbocyanine,iodide (JC-1) were used to determine the mitochondrial membrane potential (MMP) and reactive oxygen species (ROS) production...
March 5, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28486910/clinical-significance-of-the-sympathetic-nervous-system-in-the-development-and-progression-of-pulmonary-arterial-hypertension
#14
Ru-Xia Liu, Qian Luo, Hui Qiao, Juan Yu, Qian-Long Zhang, Peng Wang, Yong-Gang Cao, Chang-Lin Jiang, Li-Hui Qu
Pulmonary arterial hypertension (PAH) is defined as a complex disease of clinically characterized by elevated pulmonary pressure eventually resulting in right heart failure and premature death. To date, PAH still remains a life-threatening disease. Published evidence suggests that patients with PAH present profound sympathetic nervous system abnormalities and sympathetic activity has been shown to be increased. The mechanism of PAH is still complex and poorly understood. <p> Results: Some data have showed that adrenoceptors are involved in the process of the pathology and have different functions in the progression of PAH followed by heart failure...
January 12, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28088894/clinical-significance-of-the-sympathetic-nervous-system-in-the-development-and-progression-of-pulmonary-arterial-hypertension
#15
Ru-Xia Liu, Qian Luo, Hui Qiao, Juan Yu, Qian-Long Zhang, Peng Wang, Yong-Gang Cao, Chang-Lin Jiang, Li-Hui Qu
Pulmonary arterial hypertension (PAH) is defined as a complex disease of clinically characterized by elevated pulmonary pressure eventually resulting in right heart failure and premature death. To date, PAH still remains a life-threatening disease. Published evidence suggests that patients with PAH present profound sympathetic nervous system abnormalities and sympathetic activity has been shown to be increased. The mechanism of PAH is still complex and poorly understood. Some data have showed that adrenoceptors are involved in the process of the pathology and have different functions in the progression of PAH followed by heart failure...
January 12, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28382864/microrna-130b-promotes-wear-particle-induced-osteolysis-via-downregulating-frizzled-related-protein-frzb
#16
De-Zhi Zheng, Yan-Min Bu, Lei Wang, Jun Liu
Periprosthetic osteolysis induced by wear particles can lead to aseptic loosening, one main reason of arthroplasty failure. However, the role of microRNA-130b (miR-130b) in particle-induced osteolysis (PIO) has not been explored yet. In this study, PIO models were established in C57BL/J6 mice via the implantation of Co-Cr-Mo alloy particles, and evaluated by detecting tartrate-resistant acid phosphatase (TRAP) activity and bone resorption in the calvaria. Mouse preosteoblast MC3T3-E1 cells were cultured to receive particle stimulation in vitro...
2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28382863/fenofibrate-increases-heme-oxygenase-1-expression-and-astrocyte-proliferation-while-limits-neuronal-injury-during-intracerebral-hemorrhage
#17
Yan Wang, Min Yu, Yue Ma, Ruoping Wang, Wei Liu, Wei Xia, Aili Guan, Conghui Xing, Fei Lu, Xiaoping Ji
Peroxisome proliferator-activated receptors alpha (PPARα) is a therapy target in atherosclerosis and cardiovascular diseases. However, anti-inflammatory effects of PPARα in intracerebral hemorrhage (ICH) remain unknown. We investigated the anti-inflammatory effects of fenofibrate, a ligand of PPARα, in ICH rat model. We found that engagement of fenofibrate increased nissl body and astrocytes, and reduced the neuronal damage, which was observed in paraffin section of ICH rat brain. Fenofibrate also promoted the proliferation of astrocytes that were isolated from adult rat brain...
2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/27897112/harnessing-the-power-of-sirt1-and-non-coding-rnas-in-vascular-disease
#18
Kenneth Maiese
Noncommunicable diseases (NCDs) contribute to a significant amount of disability and death in the world. Of these disorders, vascular disease is ranked high, falls within the five leading causes of death, and impacts multiple other disease entities such as those of the cardiac system, nervous system, and metabolic disease. Targeting the silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1) pathway and the modulation of micro ribonucleic acids (miRNAs) may hold great promise for the development of novel strategies for the treatment of vascular disease since each of these pathways are highly relevant to cardiac and nervous system disorders as well as to metabolic dysfunction...
2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/27993122/in-models-of-intracerebral-hemorrhage-rivaroxaban-is-superior-to-warfarin-to-limit-blood-brain-barrier-disruption-and-hematoma-expansion
#19
Shigenobu Sawada, Yoko Ono, Yusuke Egashira, Toshinori Takagi, Kazuhiro Tsuruma, Masamitsu Shimazawa, Toru Iwama, Hideaki Hara
Intracerebral hemorrhage (ICH) during oral anticoagulation therapy with an oral vitamin K epoxidase reductase such as warfarin is a life-threatening complication. However, whether direct oral anticoagulants (DOACs) are associated with larger hematoma volume and higher mortality rates remains controversial. We evaluated the hematoma volume and pathophysiology of ICH during anticoagulation with warfarin or rivaroxaban, an orally active direct factor Xa inhibitor. Mice were orally pretreated with rivaroxaban (10 or 30 mg/kg), warfarin (4 mg/kg), or vehicle...
December 16, 2016: Current Neurovascular Research
https://www.readbyqxmd.com/read/27978784/correlation-between-decreased-parasympathetic-activity-and-reduced-cerebrovascular-reactivity-in-patients-with-lacunar-infarct
#20
Kannakorn Intharakham, Kesorn Suwanprasert, Sombat Muengtaweepongsa
Reduced cerebrovascular reactivity (CVR) was found in patients with recent lacunar infarct. However, its mechanisms were controversial. The breath holding maneuver as vasodilatory stimulus is clinically useful for an estimation of cerebrovasomotor reactivity in well co-operative patients. Patients with lacunar infarct have no higher cortical dysfunction and remain well co-operation. The breath holding maneuver is feasible and safe to perform in patients with lacunar infarct. Autonomic nervous system regulates systemic vascular activity...
December 13, 2016: Current Neurovascular Research
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