keyword
MENU ▼
Read by QxMD icon Read
search

Middle Cerebral Artery

keyword
https://www.readbyqxmd.com/read/29342151/cd8-signaling-in-microglia-macrophage-m1-polarization-in-a-rat-model-of-cerebral-ischemia
#1
Jan Boddaert, Kenny Bielen, Bart 's Jongers, Ekta Manocha, Laetitia Yperzeele, Patrick Cras, Daniel Pirici, Samir Kumar-Singh
Classical or M1 activity of microglia/macrophages has been described in several neurodegenerative and brain inflammatory conditions and has also been linked to expansion of ischemic injury in post-stroke brain. While different pathways of M1 polarization have been suggested to occur in the post-stroke brain, the precise underlying mechanisms remain undefined. Using a transient middle cerebral artery occlusion (MCAO) rat model, we showed a progressive M2 to M1 polarization in the perilesional brain region with M1 cells becoming one of the dominant subsets by day 4 post-stroke...
2018: PloS One
https://www.readbyqxmd.com/read/29341803/licorice-pretreatment-protects-against-brain-damage-induced-by-middle-cerebral-artery-occlusion-in-mice
#2
Chiyeon Lim, Sehyun Lim, Byoungho Lee, Buyeo Kim, Suin Cho
Licorice is extracted from the roots of plants in the Glycyrrhiza genus, especially Glycyrrhiza uralensis in China and Korea. It has several pharmacological activities, including neuro-protective, anti-fungal, and anti-cariogenic effects. Ischemia/reperfusion-induced brain injury is a leading cause of adult disability and death; thus, the identification of anti-apoptotic, neuro-protective therapeutic agents is viewed as an attractive drug development strategy. Infarct volumes and the expression of several apoptosis-related proteins, including Bcl-xL, Bcl-2, caspase-8, and caspase-9, were evaluated by western blotting in the brains of mice subjected to middle cerebral artery occlusion (MCAO)...
January 17, 2018: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29340071/hypoxia-inducible-factor-1%C3%AE-regulates-microglial-functions-affecting-neuronal-survival-in-the-acute-phase-of-ischemic-stroke-in-mice
#3
Seoyeon Bok, Young-Eun Kim, Youngsik Woo, Soeun Kim, Suk-Jo Kang, Yoontae Lee, Sang Ki Park, Irving L Weissman, G-One Ahn
Cells universally adapt to ischemic conditions by turning on a transcription factor hypoxia-inducible factor (HIF), in which its role is known to differ widely across many different types of cells. Given that microglia have been reported as an essential mediator of neuroinflammation in many brain diseases, we examined the role of HIF in microglia in the progression of an acute phase of ischemic stroke by challenging our novel strains of myeloid-specific Hif-1α or Hif-2α knockout (KO) mice created by Cre-loxP system via middle cerebral artery occlusion (MCAO)...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339323/mechanical-thrombectomy-of-acute-middle-cerebral-artery-occlusion-using-trans-anterior-communicating-artery-approach
#4
Krishna Amuluru, Charles E Romero, Logan Pyle, Mohammad El-Ghanem, Fawaz Al-Mufti
BACKGROUND: A cross-circulation technique involves gaining access to a cerebral vessel through a patent anterior or posterior communicating artery. This technique may be utilized in patients with emergent large vessel occlusions and an unfavorable direct route to the occlusion. While few previous reports have demonstrated successful cross-circulation technique for treatment of emergent large vessel occlusions, we present the first two cases of trans-anterior communicating artery stent-retriever thrombectomy...
January 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29339321/internal-thoracic-artery-to-middle-cerebral-artery-bypass-surgery-cadaveric-feasibility-study
#5
Stephen Monteith, Oded Goren, Ragu Sampath, Eric Lehr, Akshal Patel, Paul J Choi, Joe Iwanaga, Marios Loukas, R Shane Tubbs
BACKGROUND: A few options of extracranial donor vessels exist for utilization in intracranial vascular bypass procedures. To our knowledge, the use of an internal thoracic artery for cerebral revascularization has not been studied previously. Hence, this cadaveric feasibility study was performed. METHODS: The internal thoracic artery was dissected in five adult cadaveric specimens. The proximal diameter, distal diameter, and the length of the vessel were measured and recorded...
January 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29338983/dipyridamole-plus-triflusal-versus-triflusal-alone-in-infarct-reduction-after-middle-cerebral-artery-occlusion
#6
Zareen Amtul, Wasimul Haque, David F Cechetto
BACKGROUND AND PURPOSE: The objective of this work is to study the dose-dependent effect of combination therapy with dipyridamole and triflusal over that of triflusal alone on infarct size after middle cerebral artery occlusion (MCAO) ischemia. MATERIALS AND METHODS: Male Wistar rats were subjected to a permanent MCAO in the right hemisphere. Rats received triflusal alone and with dipyridamole via oral route. Three days after surgery, infarct volumes were measured...
January 12, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29338384/human-umbilical-cord-mesenchymal-stem-cells-preserve-adult-newborn-neurons-and-reduce-neurological-injury-after-cerebral-ischemia-by-reducing-the-number-of-hypertrophic-microglia-macrophages
#7
Willie Lin, Yogi Chang-Yo Hsuan, Mao-Tsun Lin, Ting-Wei Kuo, Cheng-Hsien Lin, Yu-Chin Su, Ko-Chi Niu, Ching-Ping Chang, Hung-Jung Lin
Microglia are the first source of a neuroinflammatory cascade, which seems to be involved in every phase of stroke-related neuronal damage. Two weeks after transient middle cerebral artery occlusion (MCAO), vehicle-treated rats displayed higher numbers of total ionized calcium-binding adaptor molecule 1 (Iba-1)-positive cells, greater cell body areas of Iba-1-positive cells, and higher numbers of hypertrophic Iba-1-positive cells (with a cell body area over 80 μm2) in the ipsilateral ischemic brain regions including the frontal cortex, striatum, and parietal cortex...
November 2017: Cell Transplantation
https://www.readbyqxmd.com/read/29337840/targeted-temperature-management-at-33%C3%A2-c-or-36%C3%A2-c-produces-equivalent-neuroprotective-effects-in-the-middle-cerebral-artery-occlusion-rat-model-of-ischemic-stroke
#8
Jung Ho Lee, Jisoo Lim, Yong Eun Chung, Sung Phil Chung, Incheol Park, Chul Hoon Kim, Je Sung You
Targeted temperature management (TTM, 32°C to 36°C) is one of the most successful achievements in modern resuscitation medicine. It has become standard treatment for survivors of sudden cardiac arrest to minimize secondary brain damage. TTM at 36°C is just as effective as TTM at 33°C and is actually preferred because it reduces adverse TTM-associated effects. TTM also likely has direct neuroprotective effects in ischemic brains in danger of stroke. It remains unclear, however, whether higher temperature TTM is equally effective in protecting the brain from the effects of stroke...
January 15, 2018: Shock
https://www.readbyqxmd.com/read/29337146/apelin-13-attenuates-er-stress-mediated-neuronal-apoptosis-by-activating-g%C3%AE-i-g%C3%AE-q-ck2-signaling-in-ischemic-stroke
#9
Fei Wu, Jian Qiu, Yang Fan, Qiuling Zhang, Baohua Cheng, Yili Wu, Bo Bai
Cerebral ischemia/reperfusion (I/R) injury-induced neuronal apoptosis contributes to the death and disability in patients with ischemic stroke. However, underlying mechanisms remain elusive and it lacks effective treatment. Here we reported that the expression of casein kinase 2 (CK2) was significantly reduced in brains of middle cerebral artery occlusion/reperfusion (MACO/R) model rats and oxygen-glucose deprivation/reperfusion (OGD/R) model neurons, which was associated with the activation of eIF2-ATF4-CHOP signaling pathway, leading to neuronal apoptosis...
January 11, 2018: Experimental Neurology
https://www.readbyqxmd.com/read/29337049/sphingosine-1-phosphate-receptor-1-activation-enhances-leptomeningeal-collateral-development-and-improves-outcome-after-stroke-in-mice
#10
Eri Iwasawa, Satoru Ishibashi, Motohiro Suzuki, FuYing Li, Masahiko Ichijo, Kazunori Miki, Takanori Yokota
BACKGROUND: Development of collateral circulation after acute ischemic stroke is triggered by shear stress that occurs in pre-existing arterioles. Recently, sphingosine-1-phosphate receptor 1 (S1P1) on endothelial cells was reported to sense shear stress and transduce its signaling pathways. METHODS: BALB/c mice (n = 118) were subjected to permanent middle cerebral artery occlusion (pMCAO) or sham operation. We investigated the effect of an S1P1-selective agonist SEW2871 on leptomeningeal collateral arteries and neurological outcome after pMCAO...
January 11, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29335619/cytokine-mif-enhances-blood-brain-barrier-permeability-impact-for-therapy-in-ischemic-stroke
#11
Yu-Chuan Liu, Yung-Hsu Tsai, Sung-Chun Tang, Houng-Chi Liou, Kai-Hsiang Kang, Horng-Huei Liou, Jiann-Shing Jeng, Wen-Mei Fu
Ischemic stroke is a devastating disease with limited therapeutic options. It is very urgent to find a new target for drug development. Here we found that the blood level of MIF in ischemic stroke patients is upregulated. To figure out the pathological role of MIF in ischemic stroke, both in vitro and in vivo studies were conducted. For in vitro studies, primary cortical neuron cultures and adult rat brain endothelial cells (ARBECs) were subjected to oxygen-glucose deprivation (OGD)/reoxygenation. Middle cerebral artery occlusion (MCAo) rodent models were used for in vivo studies...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29335483/pilot-study-to-assess-visualization-and-therapy-of-inflammatory-mechanisms-after-vessel-reopening-in-a-mouse-stroke-model
#12
Ebba Beller, Laura Reuter, Anne Kluge, Christine Preibisch, Ute Lindauer, Alexei Bogdanov, Friederike Lämmer, Claire Delbridge, Kaspar Matiasek, Benedikt J Schwaiger, Tobias Boeckh-Behrens, Claus Zimmer, Alexandra S Gersing
After reperfusion therapy in stroke patients secondary inflammatory processes may increase cerebral damage. In this pilot study, effects of anti-inflammatory therapy were assessed in a middle cerebral artery occlusion (MCAO) mouse model after reperfusion. 1 hour after MCAO, the artery was reopened and tacrolimus or NaCl were administered intra-arterially. Perfusion-weighted (PWI) and diffusion-weighted images (DWI) were obtained by MRI during MCAO. DWI, T2- and T1-weighted images with and without Bis-5HT-DTPA administration were obtained 24 hours after MCAO...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29334965/a-novel-il-1ra-pep-fusion-protein-alleviates-blood-brain-barrier-disruption-after-ischemia-reperfusion-in-male-rats
#13
Dong-Dong Zhang, Chen Jin, Ya-Tao Zhang, Xiang-Dong Gan, Min-Ji Zou, Yuan-Yuan Wang, Wen-Liang Fu, Tao Xu, Wei-Wei Xing, Wen-Ron Xia, Dong-Gang Xu
BACKGROUND: Current options to treat clinical relapse in inflammatory central nervous system (CNS) conditions such as cerebral ischemia-reperfusion injury are limited, and agents that are more effective are required. Disruption of the blood-brain barrier is an early feature of lesion formation that correlates with clinical exacerbation and facilitates the entry of inflammatory medium and inflammatory cells. Interleukin-1 receptor antagonist (IL-1RA) is a naturally occurring anti-inflammatory antagonist of the interleukin-1 (IL-1) family...
January 15, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29333725/chemoreflex-function-and-brain-blood-flow-during-upright-posture-in-men-and-women
#14
Christopher Hazlett, Heather Edgell
Orthostatic intolerance is more common in women than men, and some studies have found that women in the early follicular (EF) phase of the menstrual cycle experience the greatest feelings of lightheadedness. Chemoreflex function while supine or upright was investigated to determine the potential contribution of ventilatory control to these phenomena. Men (n = 13) and women (n = 14) were tested while supine and 70° upright (head-up tilt [HUT]) and given: (1) normoxia or (2) hypercapnia (5% CO2 ). Women were tested during the EF phase (days 2-5) and the midluteal phase (ML; days 18-24)...
January 2018: Physiological Reports
https://www.readbyqxmd.com/read/29331948/lvis-blue-as-a-low-porosity-stent-and-coil-adjuvant
#15
Matthew J Koch, Christopher J Stapleton, Scott B Raymond, Susan Williams, Thabele M Leslie-Mazwi, James David Rabinov, Aman B Patel
INTRODUCTION: The LVIS Blue is an FDA-approved stent with 28% metallic coverage that is indicated for use in conjunction with coil embolization for the treatment of intracranial aneurysms. Given a porosity similar to approved flow diverters and higher than currently available intracranial stents, we sought to evaluate the effectiveness of this device for the treatment of intracranial aneurysms. METHODS: We performed an observational single-center study to evaluate initial occlusion and occlusion at 6-month follow-up for patients treated with the LVIS Blue in conjunction with coil embolization at our institution using the modified Raymond-Roy classification (mRRC), where mRRC 1 indicates complete embolization, mRRC 2 persistent opacification of the aneurysm neck, mRRC 3a filling of the aneurysm dome within coil interstices, and mRRC 3b filling of the aneurysm dome...
January 13, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29331305/tigar-inhibits-ischemia-reperfusion-induced-inflammatory-response-of-astrocytes
#16
Jieyu Chen, Ding-Mei Zhang, Xing Feng, Jian Wang, Yuan-Yuan Qin, Tian Zhang, Qiao Huang, Rui Sheng, Zhong Chen, Mei Li, Zheng-Hong Qin
The inflammatory response of glial cells contributes to neuronal damage or repair after brain ischemia/reperfusion insult. We previously demonstrated a protective role of TP53-induced glycolysis and apoptosis regulator (TIGAR) in ischemic neuronal injury through increasing the flow of pentose phosphate pathway (PPP). The present study investigated the possible role of TIGAR in ischemia/reperfusion-induced inflammatory response of astrocytes. Male ICR mice were subjected to middle cerebral artery occlusion for 2 h followed by 24 h reperfusion and cultured primary astrocytes were subjected to oxygen glucose deprivation for 9 h followed by 24 h reoxygenation (OGD/R)...
January 10, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29330635/hypotension-due-to-spinal-anesthesia-influences-fetal-circulation-in-primary-caesarean-sections
#17
K Lato, I Bekes, Peter Widschwendter, T W P Friedl, W Janni, F Reister, G Froeba, U Friebe-Hoffmann
PURPOSE: Hypotension due to spinal anesthesia is a well-known side effect in pregnant women receiving caesarean section. Little is known about its impact on fetal blood circulation. METHODS: 40 women with uncomplicated singleton term pregnancies prepared for caesarean section were prospectively evaluated by Doppler sonography before and immediately after spinal anesthesia. RESULTS: In 90% of the women, blood pressure significantly decreased after spinal anesthesia and 42...
January 12, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29330514/a-comparison-of-static-and-dynamic-cerebral-autoregulation-during-mild-whole-body-cold-stress-in-individuals-with-and-without-cervical-spinal-cord-injury-a-pilot-study
#18
Jan W van der Scheer, Yoshi-Ichiro Kamijo, Christof A Leicht, Philip J Millar, Manabu Shibasaki, Victoria L Goosey-Tolfrey, Fumihiro Tajima
STUDY DESIGN: Experimental study. OBJECTIVES: To characterize static and dynamic cerebral autoregulation (CA) of individuals with cervical spinal cord injury (SCI) compared to able-bodied controls in response to moderate increases in mean arterial pressure (MAP) caused by mild whole-body cold stress. SETTING: Japan METHODS: Five men with complete autonomic cervical SCI (sustained > 5 y) and six age-matched able-bodied men participated in hemodynamic, temperature, catecholamine and respiratory measurements for 60 min during three consecutive stages: baseline (10 min; 33 °C water through a thin-tubed whole-body suit), mild cold stress (20 min; 25 °C water), and post-cold recovery (30 min; 33 °C water)...
January 12, 2018: Spinal Cord
https://www.readbyqxmd.com/read/29330155/amlexanox-inhibits-cerebral-ischemia-induced-delayed-astrocytic-high-mobility-group-box-1-release-and-subsequent-brain-damage
#19
Sebok Kumar Halder, Hiroshi Ueda
High-mobility group box 1 (HMGB1) is increased in the cerebrospinal fluid (CSF) and serum during the early- and late-phases of brain ischemia and is known to contribute to brain damage. However, detailed characterization underlying cell type-specific HMGB1 release and pathophysiological roles of extracellularly released HMGB1 in ischemic brain remain unclear. Here, we examined cell type-specific HMGB1 release and therapeutic potential of amlexanox, an inhibitor of non-classical release, and an anti-HMGB1 antibody against ischemic brain damage...
January 12, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29329654/uhplc-ltq-orbitrap-based-metabolomics-coupled-with-metabolomics-pathway-analysis-method-for-exploring-the-protection-mechanism-of-kudiezi-injection-in-a-rat-anti-ischemic-cerebral-reperfusion-damage-model
#20
Si-Yi Liu, Wei Cai, Fei Wang, Ying Liu, Zhan-Peng Shang, Xiu-Ping Zhang, Zi-Jian Wang, Jian-Qiu Lu, Jia-Yu Zhang
Kudiezi injection has been used extensively in the treatment of cerebrovascular and cardiovascular diseases. However, its therapeutic effects and underlying mechanism of action are not fully understood. The aim of the present study was to clarify the protective mechanisms of Kudiezi injection on cerebral ischemic injury, using metabolomics methods. Middle cerebral artery occlusion (MCAO) was introduced in rats to build the cerebral ischemic damage. UHPLC-LTQ-Orbitrap-based analytical method was established for analysis of the metabolites...
December 2017: Chinese Journal of Natural Medicines
keyword
keyword
24492
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"