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Frontiers in Neurology

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https://www.readbyqxmd.com/read/29046661/mitophagy-in-parkinson-s-disease-pathogenic-and-therapeutic-implications
#1
REVIEW
Fei Gao, Jia Yang, Dongdong Wang, Chao Li, Yi Fu, Huaishan Wang, Wei He, Jianmin Zhang
Neurons affected in Parkinson's disease (PD) experience mitochondrial dysfunction and bioenergetic deficits that occur early and promote the disease-related α-synucleinopathy. Emerging findings suggest that the autophagy-lysosome pathway, which removes damaged mitochondria (mitophagy), is also compromised in PD and results in the accumulation of dysfunctional mitochondria. Studies using genetic-modulated or toxin-induced animal and cellular models as well as postmortem human tissue indicate that impaired mitophagy might be a critical factor in the pathogenesis of synaptic dysfunction and the aggregation of misfolded proteins, which in turn impairs mitochondrial homeostasis...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29042857/clinical-implications-of-associations-between-headache-and-gastrointestinal-disorders-a-study-using-the-hallym-smart-clinical-data-warehouse
#2
Sang-Hwa Lee, Jae-June Lee, Youngsuk Kwon, Jong-Ho Kim, Jong-Hee Sohn
BACKGROUND: The brain and gastrointestinal (GI) tract are strongly connected via neural, endocrine, and immune pathways. Previous studies suggest that headaches, especially migraines, may be associated with various GI disorders. However, upper GI endoscopy in migraineurs has shown a low prevalence of abnormal findings. Also, the majority of studies have not demonstrated an association between Helicobacter pylori (HP) infection and migraine, although a pathogenic role for HP infection in migraines has been suggested...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29033893/shortcomings-in-the-current-amyotrophic-lateral-sclerosis-trials-and-potential-solutions-for-improvement
#3
REVIEW
Nakul Katyal, Raghav Govindarajan
Amyotrophic lateral sclerosis (ALS) is a clinically progressive neurodegenerative syndrome predominantly affecting motor neurons and their associated tracts. Riluzole and edaravone are the only FDA certified drugs for treating ALS. Over the past two decades, almost all clinical trials aiming to develop a successful therapeutic strategy for this disease have failed. Genetic complexity, inadequate animal models, poor clinical trial design, lack of sensitive biomarkers, and diagnostic delays are some of the potential reasons limiting any significant development in ALS clinical trials...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29033892/molecular-diagnosis-of-myoclonus-epilepsy-associated-with-ragged-red-fibers-syndrome-in-the-absence-of-ragged-red-fibers
#4
Sun Yeong Park, Se Hoon Kim, Young-Mock Lee
Myoclonus epilepsy with ragged-red fibers (MERRFs), an inherited mitochondrial disorder, has characteristic morphological changes of ragged-red fibers (RRFs) in muscle biopsy, in the absence of which mitochondrial etiology is usually not considered in patients with phenotypes suggestive of MERRF. In these circumstances, MERRF can only be diagnosed using genetic analyses. The symptoms, pathological findings, and imaging results being age dependent, we can construct a protocol based on these characteristics to understand the disease's natural course and to manage patients more effectively...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29033891/commentary-the-effect-of-systemic-nitroglycerin-administration-on-the-kynurenine-pathway-in-the-rat
#5
COMMENT
Marcelo Moraes Valença
No abstract text is available yet for this article.
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29033890/an-enigmatic-case-of-acute-mercury-poisoning-clinical-immunological-findings-and-platelet-function
#6
Ilka Kleffner, Susann Eichler, Tobias Ruck, Lisa Schüngel, Steffen Pfeuffer, Philipp Polzer, Ralf Dittrich, Rainer Dziewas, Catharina C Gross, Kerstin Göbel, Heinz Wiendl, Beate E Kehrel, Sven G Meuth
Severe mercury intoxication is very rare in developed countries, but still occurs as the result of volatile substance abuse, suicide attempts, occupational hazards, or endemic food ingestion as reported in the cases of public health disasters in Iraq and in Minamata Bay, Japan. Here, we describe the dramatic physical and cognitive decline of a 23-year-old patient caused by a severe methyl mercury (MeHg) intoxication of unknown origin. We show serial magnetic resonance imaging (MRI) of the patient's brain, as well as ex vivo analyses of blood and cerebrospinal fluid including multicolor flow cytometric measurements, functional assays of hemostaseologic efficacy, and evaluation of regulatory effector molecules...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29033889/a-retrospective-study-of-the-characteristics-and-clinical-significance-of-a-waves-in-amyotrophic-lateral-sclerosis
#7
Jia Fang, Liying Cui, Mingsheng Liu, Yuzhou Guan, Qingyun Ding, Dongchao Shen, Dawei Li, Hongfei Tai
A-wave was observed in patients with motor neuron disease (1). However, data on the characteristics and clinical significance of A-waves in patients with amyotrophic lateral sclerosis (ALS) have been scarce. The F-wave studies of 83 patients with ALS and 63 normal participants which were conducted previously at the Department of Neurology in Peking Union Medical College Hospital were retrospectively reviewed to determine the occurrence of A-waves in ALS. A-waves occurred more frequently in ALS patients than in normal controls...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29033888/concussion-as-a-multi-scale-complex-system-an-interdisciplinary-synthesis-of-current-knowledge
#8
REVIEW
Erin S Kenzie, Elle L Parks, Erin D Bigler, Miranda M Lim, James C Chesnutt, Wayne Wakeland
Traumatic brain injury (TBI) has been called "the most complicated disease of the most complex organ of the body" and is an increasingly high-profile public health issue. Many patients report long-term impairments following even "mild" injuries, but reliable criteria for diagnosis and prognosis are lacking. Every clinical trial for TBI treatment to date has failed to demonstrate reliable and safe improvement in outcomes, and the existing body of literature is insufficient to support the creation of a new classification system...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29033887/atypical-cerebral-manifestations-of-disseminated-mycobacterium-tuberculosis
#9
Ji Hye Hwang, Kyung Mi Lee, Ji Eun Park, Hyug-Gi Kim, Eui Jong Kim, Woo Suk Choi, Na Rae Yang
BACKGROUND: We investigated the patterns of cerebral manifestations in patients with underlying pulmonary or extrapulmonary tuberculosis or disseminated tuberculosis. MATERIALS AND METHODS: From January 2010 to September 2016, brain magnetic resonance imaging (MRI) scans were obtained to evaluate cerebral manifestations in patients with underlying pulmonary or extrapulmonary tuberculosis. We also included patients with drug-resistant tuberculosis or disseminated tuberculosis...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29021780/chronic-5-aminoimidazole-4-carboxamide-1-%C3%AE-d-ribofuranoside-treatment-induces-phenotypic-changes-in-skeletal-muscle-but-does-not-improve-disease-outcomes-in-the-r6-2-mouse-model-of-huntington-s-disease
#10
Marie-France Paré, Bernard J Jasmin
Huntington's disease (HD) is an autosomal dominant neurodegenerative genetic disorder characterized by motor, cognitive, and psychiatric symptoms. It is well established that regular physical activity supports brain health, benefiting cognitive function, mental health as well as brain structure and plasticity. Exercise mimetics (EMs) are a group of drugs and small molecules that target signaling pathways in skeletal muscle known to be activated by endurance exercise. The EM 5-aminoimidazole-4-carboxamide-1-β-d-ribofuranoside (AICAR) has been shown to induce cognitive benefits in healthy mice...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29021779/xenon-reduces-neuronal-hippocampal-damage-and-alters-the-pattern-of-microglial-activation-after-experimental-subarachnoid-hemorrhage-a-randomized-controlled-animal-trial
#11
Michael Veldeman, Mark Coburn, Rolf Rossaint, Hans Clusmann, Kay Nolte, Benedikt Kremer, Anke Höllig
OBJECTIVE: The neuroprotective properties of the noble gas xenon have already been demonstrated using a variety of injury models. Here, we examine for the first time xenon's possible effect in attenuating early brain injury (EBI) and its influence on posthemorrhagic microglial neuroinflammation in an in vivo rat model of subarachnoid hemorrhage (SAH). METHODS: Sprague-Dawley rats (n = 22) were randomly assigned to receive either Sham surgery (n = 9; divided into two groups) or SAH induction via endovascular perforation (n = 13, divided into two groups)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29021778/the-combined-quantification-and-interpretation-of-multiple-quantitative-magnetic-resonance-imaging-metrics-enlightens-longitudinal-changes-compatible-with-brain-repair-in-relapsing-remitting-multiple-sclerosis-patients
#12
Guillaume Bonnier, Benedicte Maréchal, Mário João Fartaria, Pavel Falkowskiy, José P Marques, Samanta Simioni, Myriam Schluep, Renaud Du Pasquier, Jean-Philippe Thiran, Gunnar Krueger, Cristina Granziera
OBJECTIVE: Quantitative and semi-quantitative MRI (qMRI) metrics provide complementary specificity and differential sensitivity to pathological brain changes compatible with brain inflammation, degeneration, and repair. Moreover, advanced magnetic resonance imaging (MRI) metrics with overlapping elements amplify the true tissue-related information and limit measurement noise. In this work, we combined multiple advanced MRI parameters to assess focal and diffuse brain changes over 2 years in a group of early-stage relapsing-remitting MS patients...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29021777/circulating-cholesterol-levels-may-link-to-the-factors-influencing-parkinson-s-risk
#13
Lijun Zhang, Xue Wang, Ming Wang, Nick W Sterling, Guangwei Du, Mechelle M Lewis, Tao Yao, Richard B Mailman, Runze Li, Xuemei Huang
OBJECTIVES: A growing literature suggests that circulating cholesterol levels have been associated with Parkinson's disease (PD). In this study, we investigated a possible causal basis for the cholesterol-PD link. METHODS: Fasting plasma cholesterol levels were obtained from 91 PD and 70 age- and gender-matched controls from an NINDS PD Biomarkers Program cohort at the Pennsylvania State University College of Medicine. Based on the literature, genetic polymorphisms in selected cholesterol management genes (APOE, LDLR, LRP1, and LRPAP1) were chosen as confounding variables because they may influence both cholesterol levels and PD risk...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29021776/sex-differences-in-rt-pa-utilization-at-hospitals-treating-stroke-the-national-inpatient-sample
#14
Amelia K Boehme, Brendan G Carr, Scott Eric Kasner, Karen C Albright, Michael J Kallan, Mitchell S V Elkind, Charles C Branas, Michael T Mullen
BACKGROUND AND PURPOSE: Sex and race disparities in recombinant tissue plasminogen activator (rt-PA) use have been reported. We sought to explore sex and race differences in the utilization of rt-PA at primary stroke centers (PSCs) compared to non-PSCs across the US. METHODS: Data from the National (Nationwide) Inpatient Sample (NIS) 2004-2010 was utilized to assess sex differences in treatment for ischemic stroke in PSCs compared to non-PSCs. RESULTS: There were 304,152 hospitalizations with a primary diagnosis of ischemic stroke between 2004 and 2010 in the analysis: 75,160 (24...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29021775/cardiac-findings-in-amyotrophic-lateral-sclerosis-a-magnetic-resonance-imaging-study
#15
Angela Rosenbohm, Benjamin Schmid, Dominik Buckert, Wolfgang Rottbauer, Jan Kassubek, Albert C Ludolph, Peter Bernhardt
The objective of this study was to investigate the potential involvement of cardiac structure and function by cardiac magnetic resonance (CMR) imaging in amyotrophic lateral sclerosis (ALS) patients. Our study included 35 patients with ALS without a history of cardiac disease and an age- and gender-matched healthy control group (n = 34). All subjects received a CMR in a 1.5-T whole-body scanner. Patients were also screened with Holter monitoring, echocardiography, and a blood test of cardiac markers. Myocardial mass in ALS hearts was reduced compared to the control group, and ejection volumes in the left and right heart were severely decreased in ALS patients, as shown by echocardiography and CMR...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29018406/editorial-karolinska-institutet-200-year-anniversary-symposium-on-injuries-to-the-spinal-cord-and-peripheral-nervous-system-an-update-on-recent-advances-in-regenerative-neuroscience
#16
EDITORIAL
https://www.readbyqxmd.com/read/29018405/chimeric-peptide-tat-ha-nr2b9c-improves-regenerative-repair-after-transient-global-ischemia
#17
Hai-Hui Zhou, Li Zhang, Hai-Xia Zhang, Jin-Ping Zhang, Wei-Hong Ge
Transient global ischemia (TGI) is a major public health problem, and it heightens the need of effective treatments. The present study was undertaken to investigate whether recombinant polypeptide Tat-HA-NR2B9c improves spatial learning and memory deficits in rats after TGI. Rats were subjected to 20-min ischemia induced by four-vessel occlusion (4-VO) method and daily injected with Tat-HA-NR2B9c (1.12 mg/kg) for 1 week. Tat-HA-NR2B9c increased CREB activity, upregulated B-cell lymphoma-2 (Bcl-2) expression after treated for 24 h...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29018404/socioeconomic-outcome-and-quality-of-life-in-adults-after-status-epilepticus-a-multicenter-longitudinal-matched-case-control-analysis-from-germany
#18
Lena-Marie Kortland, Susanne Knake, Felix von Podewils, Felix Rosenow, Adam Strzelczyk
BACKGROUND: There is a lack of data concerning socioeconomic outcome and quality of life (QoL) in patients after status epilepticus (SE) in Germany. PATIENTS AND METHODS: Adult patients treated between 2011 and 2015 due to SE at the university hospitals in Frankfurt, Greifswald, and Marburg were asked to fill out a questionnaire regarding long-term outcome of at least 3 months after discharge. The SE cohort consisted of 25.9% patients with an acute symptomatic, 42% with a remote symptomatic and previous epilepsy, 22...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29018403/repulsive-guidance-molecule-a-inhibits-angiogenesis-by-downregulating-vegf-and-phosphorylated-focal-adhesion-kinase-in-vitro
#19
Gang Zhang, Rong Wang, Ke Cheng, Qi Li, Yu Wang, Rongrong Zhang, Xinyue Qin
Repulsive guidance molecule a (RGMa) is a major neuron guidance factor in central nervous systems. We previously found that inhibition of RGMa could greatly enhance neural function rehabilitation in rats after MCAO/reperfusion. Neuron guidance factors are often regulators of angiogenesis. However, the effect of RGMa on angiogenesis and its mechanisms remain to be determined. Here, we investigated the effect of RGMa on endothelial cell (EC) proliferation, migration, tube formation, and cytoskeleton reassembly...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29018402/preferential-impairment-of-the-contralesional-posterior-semicircular-canal-in-internuclear-ophthalmoplegia
#20
Seung-Han Lee, Sang-Hoon Kim, Sung-Sik Kim, Kyung Wook Kang, Alexander Andrea Tarnutzer
BACKGROUND: The vertical vestibulo-ocular reflex (VOR) may be impaired in internuclear ophthalmoplegia (INO) as the medial longitudinal fasciculus (MLF) conveys VOR-signals from the vertical semicircular canals. It has been proposed that signals from the contralesional posterior semicircular canal (PSC) are exclusively transmitted through the MLF, while for the contralesional anterior canal other pathways exist. OBJECTIVE: Here, we aimed to characterize dysfunction in individual canals in INO-patients using the video-head-impulse test (vHIT) and to test the hypothesis of dissociated vertical canal impairment in INO...
2017: Frontiers in Neurology
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