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https://www.readbyqxmd.com/read/29677701/surgical-treatment-and-long-term-outcome-of-cerebral-cavernous-malformations-related-epilepsy-in-pediatric-patients
#1
Qiao Lin, Peng-Fan Yang, Yan-Zeng Jia, Jia-Sheng Pei, Hui Xiao, Ting-Ting Zhang, Zhong-Hui Zhong, Shou-Sen Wang
Cerebral cavernous malformations (CMs) are vascular malformations affecting any part of the central nervous system. Clinical data and surgical outcomes for 27 pediatric patients with CM-related epilepsy were retrospectively reviewed. The mean age of onset was 12.71 ± 4.09 years, and the mean duration of epilepsy was 2.34 ± 1.95 years. All 27 patients were treated with microsurgery for resection of the CMs, and the hemosiderin rim, and the secondary epileptogenic zone if necessary. The mean follow-up period was 6...
April 20, 2018: Neuropediatrics
https://www.readbyqxmd.com/read/29677060/cerebral-small-vessel-but-not-large-vessel-disease-is-associated-with-impaired-cerebral-autoregulation-during-cardiopulmonary-bypass-a-retrospective-cohort-study
#2
Yohei Nomura, Roland Faegle, Daijiro Hori, Abbas Al-Qamari, Alexander J Nemeth, Rebecca Gottesman, Gayane Yenokyan, Charles Brown, Charles W Hogue
BACKGROUND: Impaired cerebral blood flow (CBF) autoregulation during cardiopulmonary bypass (CPB) is associated with stroke and other adverse outcomes. Large and small arterial stenosis is prevalent in patients undergoing cardiac surgery. We hypothesize that large and/or small vessel cerebral arterial disease is associated with impaired cerebral autoregulation during CPB. METHODS: A retrospective cohort analysis of data from 346 patients undergoing cardiac surgery with CPB enrolled in an ongoing prospectively randomized clinical trial of autoregulation monitoring were evaluated...
April 17, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29676103/-protective-effect-and-mechanism-of-p-hydroxybenzaldehyde-on-blood-brain-barrier
#3
Yan-Ping Zhu, Xin Li, Yao Du, Lu Zhang, Li Ran, Ning-Na Zhou
The disruption of blood-brain barrier(BBB) induced by oxidative stress is an important pathological reaction which results in secondary brain injury during the cerebral ischemia-reperfusion. This study was designed to investigate the protective effect and mechanism of p-hydroxybenzaldehyde (p-HBA) from Gastrodia elata on BBB. The BBB is mainly consisted of vascular endothelial cells and astrocytes, so brain microvascular endothelial cell line (bEnd.3) and astrocytes (Ast) in mice were used in this study to establish BBB model...
March 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29675962/dual-wavelength-hybrid-optoacoustic-ultrasound-biomicroscopy-for-functional-imaging-of-large-scale-cerebral-vascular-networks
#4
Johannes Rebling, Héctor Estrada, Sven Gottschalk, Gali Sela, Michael Zwack, Georg Wissmeyer, Vasilis Ntziachristos, Daniel Razansky
A critical link exists between pathological changes of cerebral vasculature and diseases affecting brain function. Microscopic techniques have played an indispensable role in the study of neurovascular anatomy and functions. Yet, investigations are often hindered by sub-optimal trade-offs between the spatiotemporal resolution, field-of-view and type of contrast offered by the existing optical microscopy techniques. We present a hybrid dual-wavelength optoacoustic biomicroscope capable of rapid transcranial visualization of large-scale cerebral vascular networks...
April 19, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29674378/the-caval-sphincter-in-cetaceans-and-its-predicted-role-in-controlling-venous-flow-during-a-dive
#5
Margo A Lillie, A Wayne Vogl, Stephen Raverty, Martin Haulena, William A McLellan, Garry B Stenson, Robert E Shadwick
A sphincter on the inferior vena cava can protect the heart of a diving mammal from overload when elevated abdominal pressures increase venous return, yet sphincters are reported incompetent or absent in some cetacean species. We previously hypothesized that abdominal pressures are elevated and pulsatile in fluking cetaceans, and that collagen is deposited on the diaphragm according to pressure levels to resist deformation. Here we tested the hypothesis that cetaceans generating high abdominal pressures need a more robust sphincter than those generating low pressures...
April 19, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29674201/placental-histopathological-lesions-in-correlation-with-neonatal-outcome-in-preeclampsia-with-and-without-severe-features
#6
Eran Weiner, Ohad Feldstein, Liliya Tamayev, Ehud Grinstein, Elad Barber, Jacob Bar, Letizia Schreiber, Michal Kovo
OBJECTIVE: We aimed to compare pregnancy outcome and placental histopathology in women with preeclampsia (PE) with and without severe features. METHODS: The medical records and placental pathology reports of all pregnancies complicated by PE during 2008-2016, were reviewed. Results were compared between those with and without severe features (severe PE vs. mild PE groups), according to current ACOG guidelines. Placental lesions were classified to maternal/fetal vascular supply lesions, and maternal/fetal inflammatory responses...
February 7, 2018: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29672868/fetal-cerebral-circulation-as-target-of-maternal-alcohol-consumption
#7
Anna N Bukiya, Alex M Dopico
Alcohol (ethanol) is one of the most widely used psychoactive substances worldwide. Alcohol consumption during pregnancy may result in a wide range of morphological and neurodevelopmental abnormalities termed fetal alcohol spectrum disorders (FASD), with the most severe cases diagnosed as fetal alcohol syndrome (FAS). FAS and FASD are not readily curable and currently represent the leading preventable causes of birth defect and neurodevelopmental delay in the US. The etiology of FAS/FASD remains poorly understood...
April 19, 2018: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29672624/anatomical-distribution-of-cerebral-microbleeds-and-intracerebral-hemorrhage-in-vertebrobasilar-dolichoectasia
#8
Alex Förster, Ralf Wenz, Máté Elöd Maros, Johannes Böhme, Mansour Al-Zghloul, Angelika Alonso, Christoph Groden, Holger Wenz
OBJECTIVES: Vertebrobasilar dolichoectasia (VBD) is a dilatative arteriopathy associated with intracerebral hemorrhage. In the present study, we sought to evaluate the frequency and anatomical distribution of cerebral microbleeds (cMBs) and intracerebral hemorrhage (ICH) in VBD. METHODS: From a MRI database 94 VBD patients were identified and analyzed with special emphasis on cMBs and ICH on T2*-weighted gradient echo images (GRE) in relation to the established diagnostic MRI criteria of VBD (diameter, height, and lateral position)...
2018: PloS One
https://www.readbyqxmd.com/read/29671952/in-vivo-study-of-rat-cortical-hemodynamics-using-a-stereotaxic-apparatus-compatible-photoacoustic-microscope
#9
Heng Guo, Qian Chen, Weizhi Qi, Xingxing Chen, Lei Xi
Brain imaging is an important technique in cognitive neuroscience. In this paper, we designed a stereotaxic-apparatus-compatible photoacoustic microscope for studies of rat cortical hemodynamics. Compared with existing OR-PAM systems, the probe owns feature of fast, light, and miniature. In this microscope, we integrated a miniaturized ultrasound transducer with a center frequency of 10 MHz to detect photoacoustic signals and a two-dimensional (2D) micro-electro-mechanical system (MEMS) scanner to achieve raster scanning of the optical focus...
April 19, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29671418/the-role-of-k-atp-channels-in-cerebral-ischemic-stroke-and-diabetes
#10
REVIEW
Vivian Szeto, Nai-Hong Chen, Hong-Shuo Sun, Zhong-Ping Feng
ATP-sensitive potassium (KATP ) channels are ubiquitously expressed on the plasma membrane of cells in multiple organs, including the heart, pancreas and brain. KATP channels play important roles in controlling and regulating cellular functions in response to metabolic state, which are inhibited by ATP and activated by Mg-ADP, allowing the cell to couple cellular metabolic state (ATP/ADP ratio) to electrical activity of the cell membrane. KATP channels mediate insulin secretion in pancreatic islet beta cells, and controlling vascular tone...
April 19, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29671019/lixisenatide-a-novel-glp-1-analog-protects-against-cerebral-ischemia-reperfusion-injury-in-diabetic-rats
#11
Rania G Abdel-Latif, Gehan H Heeba, Ashraf Taye, Mohamed M A Khalifa
Type 2 diabetes mellitus (T2DM) is a major risk factor for ischemic stroke accompanied by vascular dysfunction and poor cerebrovascular outcome. Lixisenatide is a glucagon like peptide-1 (GLP-1) analog that is recently used for T2DM treatment with established neuroprotective properties. This study investigated and compared the neuroprotective effect of lixisenatide against glimepiride on diabetic rats subjected to global cerebral ischemia/reperfusion (I/R) injury. T2DM-induced adult male Wistar rats were administered lixisenatide or glimepiride prior to induction of global cerebral I/R-induced injury...
April 18, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29670826/characteristics-of-paramedian-pontine-arteries-disease-and-its-association-with-hemoglobina1c
#12
Haiyan Li, Yaqing Shu, Biao Hu, Yongqiang Dai, Yinyao Lin, Yilong Shan, Yuge Wang, Wei Cai, Zhengqi Lu
Objectives: The association of branch atherosclerotic disease (BAD) and diabetes mellitus (DM) in the territory of posterior circulation is rarely discussed. Intracranial BAD was divided into two different types: paramedian pontine arteries (PPA) disease (PPD) and lenticulostriate arteries (LSA) disease. The goal of the study was to evaluate the clinical characteristics of PPD and its association with hemoglobinA1c (HbA1c) in China. Materials and Methods: Radiologically confirmed PPD was defined as an isolated unilateral infarction extending to the ventral surface of the pons...
April 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29670570/mexican-national-institute-of-neurology-and-neurosurgery-stroke-registry-results-of-a-25-year-hospital-based-study
#13
Antonio Arauz, Juan Manuel Marquez-Romero, Miguel A Barboza, Fabiola Serrano, Carol Artigas, Luis Manuel Murillo-Bonilla, Carlos Cantú-Brito, José Luis Ruiz-Sandoval, Fernando Barinagarrementeria
Background and purpose: Stroke has been scarcely studied in Latin America (LA). The Mexican Institute of Neurology Stroke Registry was established in 1990 as a prospective computer-based database to register data obtained from patients admitted with stroke. Using this data, we attempted to define the profile of risk factors and outcomes. Methods: The demographic data, stroke description, ancillary tests, vascular risk factors, and modified Rankin scale (mRs) were registered...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29669868/improving-microcirculatory-reperfusion-reduces-parenchymal-oxygen-radical-formation-and-provides-neuroprotection
#14
Aslihan Taskiran-Sag, Muge Yemisci, Yasemin Gursoy-Ozdemir, Sefik Evren Erdener, Hulya Karatas, Deniz Yuce, Turgay Dalkara
BACKGROUND AND PURPOSE: Reperfusion is the most significant determinant of good outcome after ischemic stroke. However, complete reperfusion often cannot be achieved, despite satisfactory recanalization. We hypothesized that microvascular protection was essential for achieving effective reperfusion and, hence, neuroprotection. To test this hypothesis, we have developed an in vivo model to differentially monitor parenchymal and vascular reactive oxygen species (ROS) formation. By comparing the ROS-suppressing effect of N-tert-butyl-α-phenylnitrone (PBN) with its blood-brain barrier impermeable analog 2-sulfo-phenyl-N-tert-butylnitrone (S-PBN), we assessed the impact of vascular ROS suppression alone on reperfusion and stroke outcome after recanalization...
April 18, 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29669322/microrna-381-favors-repair-of-nerve-injury-through-regulation-of-the-sdf-1-cxcr4-signaling-pathway-via-lrrc4-in-acute-cerebral-ischemia-after-cerebral-lymphatic-blockage
#15
Jian-Min Piao, Wei Wu, Zhong-Xi Yang, Yu-Zhen Li, Qi Luo, Jin-Lu Yu
BACKGROUND/AIMS: Acute cerebral ischemia is a manifestation of cerebral vascular insufficiency and has a high mortality. However, the therapy for acute cerebral ischemia is still limited. This study aimed to investigate the effect of microRNA-381 (miR-381) on the repair of nerve injury in rats with acute cerebral ischemia after cerebral lymphatic blockage (CLB) by targeting leucine-rich repeat C4 protein (LRRC4) through the Stromal cell-derived factor-1/CXC chemokine receptor-4 signaling pathway...
April 13, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29668477/clinical-significance-of-the-cerebral-perforating-arteries
#16
Vaso Antunović, Aleksandar Mirčić, Slobodan Marinković, Luciano Brigante, Miloš Mališ, Biljana Georgievski, Miljana Aksić
There is scarce data in the contemporary literature regarding the correlation of the microanatomy of the perforating arteries, their atherosclerosis, and the ischemia in their territory. In order to examine, at least partially, those parameters, the perforating arteries of 12 brains were microdissected or their vascular casts were obtained. In addition, 30 specimens of the perforators were used for a histological and immunohistochemical study. Finally, radiological images of 14 patients with deep cerebral infarcts were examined following a selection among 62 subjects...
December 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/29665789/idiopathic-basal-ganglia-calcification-associated-with-cerebral-micro-infarcts-a-case-report
#17
Takuma Nishimoto, Fumiaki Oka, Hideyuki Ishihara, Mizuya Shinoyama, Michiyasu Suzuki
BACKGROUND: Idiopathic basal ganglia calcification (IBGC) is a rare neurodegenerative disorder characterized by symmetric intracranial calcium deposition. We report a patient with IBGC associated with cerebral infarction due to impairment of cerebrovascular reactivity based on single-photon emission computed tomography (SPECT) with acetazolamide challenge. CASE PRESENTATION: A 66-year-old male presented with right conjugate deviation, right hemiparesis and total aphasia due to a convulsive seizure...
April 17, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29660947/effects-of-walkbot-gait-training-on-kinematics-kinetics-and-clinical-gait-function-in-paraplegia-and-quadriplegia
#18
Jongseok Hwang, Yongil Shin, Ji-Ho Park, Young Joo Cha, Joshua Sung H You
BACKGROUND: The robotic-assisted gait training (RAGT) system has gained recognition as an innovative, effective paradigm to improve functional ambulation and activities of daily living in spinal cord injury and stroke. However, the effects of the Walkbot robotic-assisted gait training system with a specialized hip-knee-ankle actuator have never been examined in the paraplegia and quadriplegia population. OBJECTIVE: The aim of this study was to determine the long-term effects of Walkbot training on clinical for hips and knee stiffness in individuals with paraplegia or quadriplegia...
April 7, 2018: NeuroRehabilitation
https://www.readbyqxmd.com/read/29656986/eight-and-a-half-syndrome-a-combination-of-intracranial-capillary-telangiectasia-and-hematencephalon
#19
Wei Li, Deren Hou, Yanyao Deng, Yi Tian
Eight-and-a-half syndrome, a combination of one-and-a-half syndrome and ipsilateral facial palsy, was first described by Eggenberger in 1998. Intracranial capillary telangiectasia (ICT) is a rare type of latent cerebral vascular malformation characterized by a number of small, dilated, and thin-walled blood capillaries with normal brain tissues between them. Susceptibility weighted imaging is the recommended diagnostic method to detect ICT. Oommen once reported 1 case about pontine hemorrhage causing Fisher one-and-a-half syndrome with facial paralysis...
April 12, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29653090/vascular-and-molecular-pharmacology-of-the-metabolically-stable-cgrp-analogue-sax
#20
Majid Sheykhzade, Bahareh Abdolalizadeh, Cassandra Koole, Darryl Scott Pickering, Karin Dreisig, Sara Ellinor Johansson, Balsam Kadri Abboud, Rasmus Dreier, Jais Oliver Berg, Jørgen Lykke Jeppesen, Patrick M Sexton, Lars Edvinsson, Denise Wootten, Anette Sams
The main purpose of this study was to compare in vitro pharmacological properties of human αCGRP (CGRP) and a recently discovered metabolically stable CGRP analog, SAX, in isolated rat and human artery segments. In rat, CGRP and SAX induced similar vasodilatory responses in isolated mesenteric artery with the potency of SAX being lower than that of CGRP (vasodilatory pEC50 8.2 ± 0.12 and 9.0 ± 0.11, respectively). A corresponding difference in receptor binding affinity of SAX and CGRP was determined in rat cerebral membranes (pKi 8...
April 10, 2018: European Journal of Pharmacology
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