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Neurological conditions

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https://www.readbyqxmd.com/read/29352651/catheter-injected-bone-marrow-mesenchymal-stem-cells-induce-efficacious-occlusion-of-arteriovenous-nidus-in-a-swine-model
#1
Joseph Touma, Jianping Dai, Andre Gaston, Marianne Gervais, Eric Allaire
OBJECTIVES: Arteriovenous malformations (AVMs) are complex vascular lesions. Surgical excision is the treatment of choice, but is often not achievable. Embolo-sclerotherapy alone is associated with high recurrence rates. This study tested the hypothesis that seeding hydrogel conditioned bone marrow derived mesenchymatous stem cells (BM-MSCs) in an AVM nidus model induces solid microvascular occlusion through endoluminal tissue growth. METHODS: AVMs were modelled as arteriovenous microvascular nidus, using swine rete mirabile, a plexiform intracranial structure composed of arterial microvessels that extensively anastomose...
January 15, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29351721/myeloperoxidase-and-neurological-disorder-a-cross-talk
#2
Kanta Pravalika, Deepaneeta Sarmah, Harpreet Kaur, Madhuri Wanve, Jackson Saraf, Kiran Kalia, Anupom Borah, Dileep R Yavagal, Kunjan R Dave, Pallab Bhattacharya
Myeloperoxidase (MPO) is a protein present in azurophilic granules, macrophages, and neutrophils that are released into extracellular fluid (ECF) during inflammation. MPO releases hypochlorous acid (HOCL) and other chlorinated species. It is derived from hydrogen peroxide (H2O2) showing response during inflammatory conditions and plays a role in the immune defense against pathogens. MPO may show unwanted effects by indirectly increasing the formation of reactive nitrogen species (RNS), reactive oxygen species (ROS), and tumor necrosis factor alpha (TNF-α) leading to inflammation and oxidative stress...
January 19, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29351671/a-novel-non-invasive-method-for-evaluating-electroencephalograms-on-laying-hens
#3
Krista N Eberle, Michael P Martin, Sanjay Shah, Ramon D Malheiros, Kimberly A Livingston, Kenneth E Anderson
The use of electroencephalograms (EEG) to study the avian brain relative to behavior was conducted as early as the 1960's. EEG readings, combined with visual cues, provide the ability to elucidate and correlate behaviors to neurological and physiological changes in a chicken. The use of EEG recordings in animal models require access to the brain to implant electrodes. Having the ability to observe EEG activity on sensible birds without surgical implantation could broaden the research in this area and give further insight related to the hen's state of awareness...
January 17, 2018: Poultry Science
https://www.readbyqxmd.com/read/29351647/minimally-invasive-lateral-retroperitoneal-approach-for-resection-of-extraforaminal-lumbar-plexus-schwannomas-operative-techniques-and-literature-review
#4
Michael M Safaee, Christopher P Ames, Vedat Deviren, Aaron J Clark
BACKGROUND: Traditional approaches for retroperitoneal lumbar plexus schwannomas involve anterior open or laparoscopic resection. For select tumors, the lateral retroperitoneal approach provides a minimally invasive alternative. OBJECTIVE: To describe a minimally invasive lateral transpsoas approach for the resection of retroperitoneal schwannomas. METHODS: A lateral retroperitoneal transpsoas approach was used to resect a 3.1 × 2.7 × 4...
January 17, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29350164/cerebral-syphilitic-gumma-in-immunocompetent-man-japan
#5
Tatsuya Kodama, Hidenori Sato, Morichika Osa, Yuji Fujikura, Akihiko Kawana
Although cerebral syphilitic gummas are generally considered to be rare manifestations of tertiary syphilis, many reports exist of early cerebral syphilitic gumma. Our finding of cerebral syphilitic gumma in an HIV-negative man within 5 months after syphilis infection suggests that this condition should be considered in syphilis patients who have neurologic symptoms.
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29349679/autoimmune-encephalitis-associated-with-glutamic-acid-decarboxylase-antibodies-a-case-series
#6
Faruk Incecik, Ozlem M Herguner, Seyda Besen, Mustafa Yılmaz
Antibodies against glutamic acid decarboxylase (GAD) are associated with various neurologic conditions described in patients including stiff person syndrome, cerebellar ataxia, refractory epilepsy, limbic and extralimbic encephalitis. GAD antibodies-related limbic encephalitis cases are well described; reports of extralimbic involvement are limited. We describe four cases of GAD antibody-related autoimmune encephalitis. Three of them had extralimbic involvement and only one had limbic encephalitis.
January 18, 2018: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29348728/systems-level-mechanisms-of-action-of-panax-ginseng-a-network-pharmacological-approach
#7
REVIEW
Sa-Yoon Park, Ji-Hun Park, Hyo-Su Kim, Choong-Yeol Lee, Hae-Jeung Lee, Ki Sung Kang, Chang-Eop Kim
Panax ginseng has been used since ancient times based on the traditional Asian medicine theory and clinical experiences, and currently, is one of the most popular herbs in the world. To date, most of the studies concerning P. ginseng have focused on specific mechanisms of action of individual constituents. However, in spite of many studies on the molecular mechanisms of P. ginseng, it still remains unclear how multiple active ingredients of P. ginseng interact with multiple targets simultaneously, giving the multidimensional effects on various conditions and diseases...
January 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29347976/intracisternal-tuberculoma-a-refractory-type-of-tuberculoma-indicating-surgical-intervention
#8
Fanfan Chen, Lei Chen, Yongfu Cao, Yongjun Yi, Jingwen Zhuang, Wuhua Le, Wei Xie, Lanbo Tu, Peng Li, Yimin Fang, Ling Li, Yuqing Kou, Kaikai Fu, Hua He, Hongbin Ju
BACKGROUND: Central nervous system (CNS) tuberculoma is a rare disease with severe neurological deficits. This retrospective research is to review the data of patients diagnosed as CNS tuberculoma. Surgeries were performed in all patients. The clinical features especially the neurological image and the anatomical characters of the tuberculomas were concerned. METHODS: Totally 11 patients diagnosed as CNS tuberculoma were admitted in Guangzhou First People's Hospital (7cases) and Changzheng Hospital (4 cases) during 2006-2015...
January 18, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29347680/directionality-indices-testing-information-transfer-with-surrogate-correction
#9
Beth Jelfs, Rosa H M Chan
Directionality indices can be used as an indicator of the asymmetry in coupling between systems and have found particular application in relation to neurological systems. The directionality index between two systems is a function of measures of information transfer in both directions. Here we illustrate that before inferring the directionality of coupling it is first necessary to consider the use of appropriate tests of significance. We propose a surrogate corrected directionality index which incorporates such testing...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346238/trends-in-severe-pediatric-emergency-conditions-in-a-national-cohort-2008-to-2014
#10
Kenneth A Michelson, Joel D Hudgins, Laura G Burke, Todd W Lyons, Michael C Monuteaux, Richard G Bachur, Jonathan A Finkelstein
OBJECTIVE: The objective of this study was to determine the incidence and recent trends in serious pediatric emergency conditions. METHODS: We conducted a cross-sectional study of the Nationwide Emergency Department Sample from 2008 through 2014, and included patients with age below 18 years with a serious condition, defined as each diagnosis group in the diagnosis grouping system with a severity classification system score of 5. We calculated national incidences for each serious condition using annualized weighted condition counts divided by annual United States census child population counts...
January 16, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29346176/rapid-response-to-scan-or-not-to-scan-the-utility-of-noncontrast-ct-head-for-altered-mental-status
#11
Purujit J Thacker, Mansha Sethi, Jonathan Sternlieb, Doron Schneider, Mary Naglak, Rajeshkumar R Patel
OBJECTIVES: The aims of the study were the following: (1) to determine how often computed tomography (CT) scans of the head are obtained on rapid responses called for altered mental status (AMS), (2) to determine whether CT imaging of the head is required during all rapid responses called for AMS, (3) to determine which patients would benefit from CT scans of the head in this setting, (4) to note whether an adequate neurologic exam was documented, (5) to determine the cost of CT scans that did not change management, and (6) to examine the role of medications leading to AMS...
January 17, 2018: Journal of Patient Safety
https://www.readbyqxmd.com/read/29346110/a-three-dimensional-arrayed-microfluidic-blood-brain-barrier-model-with-integrated-electrical-sensor-array
#12
Sehoon Jeong, Sunja Kim, John Buonocore, Jaewon Park, C Jane Welsh, Jianrong Li, Arum Han
OBJECTIVE: The blood-brain barrier (BBB) poses a unique challenge to the development of therapeutics against neurological disorders due to its impermeabi-lity to most of the chemical compounds. Most in vitro BBB models have limitations in mimicking in vivo conditions and functions. Here, we show a co-culture microfluidic BBB-on-a-chip that provides interactions between neurovascular endothelial cells and neuronal cells across a porous polycarbonate membrane, which better mimics the in vivo conditions, as well as allows in vivo level shear stress to be applied...
February 2018: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/29344472/status-epilepticus-as-an-unusual-manifestation-of-heat-stroke
#13
Won Gu Lee, So-Young Huh, Jin-Hyung Lee, Bong Goo Yoo, Meyung Kug Kim
Heat stroke (HS) is a medical emergency and life threatening condition, characterized by body temperature over 40°C. This can lead to dysfunction of multiple organs such as the heart, liver, kidneys, lungs, blood coagulation system, and central nervous system. Neurological complications include change in consciousness, cerebellar dysfunction, convulsions, aphasia, muscular weakness, and parkinsonism. Cerebellar syndrome is the most common neurological finding in HS. We report a case of HS presenting with status epilepticus, without any other neurological manifestations...
December 2017: Journal of Epilepsy Research
https://www.readbyqxmd.com/read/29344060/neuro-ophthalmic-presentation-of-neuro-sweet-disease
#14
Padmaja Sudhakar, Stuart Tobin, William O Connor, Sachin Kedar
Acute febrile neutrophilic dermatosis (Sweet syndrome) is a systemic inflammatory condition usually associated with autoimmune or neoplastic processes and characterised by inflammatory dermatologic lesions such as erythematous plaques and papules associated with fever and leukocytosis. Neurological and ophthalmological involvement is rare. The authors describe an unusual case of Sweet syndrome associated with microscopic polyangiitis presenting with papilloedema, anterior uveitis, and skin rash. Years later, he developed acute posterior multifocal placoid pigment epitheliopathy...
August 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/29343559/a-genetic-locus-for-paranoia
#15
Bernard Crespi, Silven Read, Iiro Salminen, Peter Hurd
The psychological effects of brain-expressed imprinted genes in humans are virtually unknown. Prader-Willi syndrome (PWS) is a neurogenetic condition mediated by genomic imprinting, which involves high rates of psychosis characterized by hallucinations and paranoia, as well as autism. Altered expression of two brain-expressed imprinted genes, MAGEL2 and NDN, mediates a suite of PWS-related phenotypes, including behaviour, in mice. We phenotyped a large population of typical individuals for schizophrenia-spectrum and autism-spectrum traits, and genotyped them for the single-nucleotide polymorphism rs850807, which is putatively functional and linked with MAGEL2 and NDN Genetic variation in rs850807 was strongly and exclusively associated with the ideas of reference subscale of the schizophrenia spectrum, which is best typified as paranoia...
January 2018: Biology Letters
https://www.readbyqxmd.com/read/29343288/changes-in-the-secretome-of-tri-dimensional-spheroid-cultured-human-mesenchymal-stem-cells-in-vitro-by-interleukin-1-priming
#16
Elena Redondo-Castro, Catriona J Cunningham, Jonjo Miller, Helena Brown, Stuart M Allan, Emmanuel Pinteaux
BACKGROUND: Mesenchymal stem cells (MSCs) are one of the most promising candidates for the treatment of major neurological disorders. Desirable therapeutic properties of MSCs include reparative and regenerative potential but, despite their proven safety, the efficacy of MSCs remains controversial. Therefore, it is essential to optimise culture protocols to enhance the therapeutic potential of the MSC secretome. Here we aimed to: assess the increase in secretion of cytokines that may induce repair, regeneration, or immunomodulation when cultured in three dimensions; study the effect of interleukin (IL)-1 priming on two- (2D) and three-dimensional (3D) cultures of MSC; and evaluate the potential use of the modified secretome using microglial-MSC co-cultures...
January 17, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29342881/development-of-self-assembled-nanoribbon-bound-peptide-polyaniline-composite-scaffolds-and-their-interactions-with-neural-cortical-cells
#17
Andrew M Smith, Harrison T Pajovich, Ipsita A Banerjee
Degenerative neurological disorders and traumatic brain injuries cause significant damage to quality of life and often impact survival. As a result, novel treatments are necessary that can allow for the regeneration of neural tissue. In this work, a new biomimetic scaffold was designed with potential for applications in neural tissue regeneration. To develop the scaffold, we first prepared a new bolaamphiphile that was capable of undergoing self-assembly into nanoribbons at pH 7. Those nanoribbons were then utilized as templates for conjugation with specific proteins known to play a critical role in neural tissue growth...
January 13, 2018: Bioengineering
https://www.readbyqxmd.com/read/29342116/vegf-signaling-in-neurological-disorders
#18
REVIEW
Joon W Shim, Joseph R Madsen
Vascular endothelial growth factor (VEGF) is a potent growth factor playing diverse roles in vasculogenesis and angiogenesis. In the brain, VEGF mediates angiogenesis, neural migration and neuroprotection. As a permeability factor, excessive VEGF disrupts intracellular barriers, increases leakage of the choroid plexus endothelia, evokes edema, and activates the inflammatory pathway. Recently, we discovered that a heparin binding epidermal growth factor like growth factor (HB-EGF)-a class of EGF receptor (EGFR) family ligands-contributes to the development of hydrocephalus with subarachnoid hemorrhage through activation of VEGF signaling...
January 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29341941/cauda-equina-syndrome-due-to-lumbar-disc-herniation-a-review-of-literature
#19
Stylianos Kapetanakis, Constantinos Chaniotakis, Constantinos Kazakos, Jannis V Papathanasiou
Cauda equina syndrome (CES) is a rare neurologic condition that is caused by compression of the cauda equina. Cauda equina consists of spinal nerves L2-L5, S1-S5 and the coccygeal nerve. The compression of these nerve roots can be caused mainly by lumbar disc herniation (45% of all causes). The diagnosis consists of two critical points: a) detailed history and physical examination and b) MRI or CT. The gold standard of the treatment of this syndrome is the surgical approach in combination with the timing of onset of symptoms...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29341025/multiple-sclerosis-prevalence-and-impact
#20
Heather Gilmour, Pamela L Ramage-Morin, Suzy L Wong
This article provides new information about multiple sclerosis (MS) using the 2010/2011 Neurological Conditions Prevalence File, the 2011/2012 Survey of Neurological Conditions in Institutions in Canada, and the 2011 Survey on Living with Neurological Conditions in Canada. An estimated 93,500 Canadians living in private households and 3,800 residents of long-term care institutions had been diagnosed with MS. Prevalence estimates were 159 and 418 cases per 100,000 population for men and women, respectively; 2...
January 17, 2018: Health Reports
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