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https://www.readbyqxmd.com/read/29031113/cross-sectional-and-longitudinal-small-animal-pet-shows-pre-and-post-synaptic-striatal-dopaminergic-deficits-in-an-animal-model-of-hiv
#1
Sanhita Sinharay, Dianne Lee, Swati Shah, Siva Muthusamy, Georgios Z Papadakis, Xiang Zhang, Dragan Maric, William C Reid, Dima A Hammoud
INTRODUCTION: In vivo imaging biomarkers of various HIV neuropathologies, including dopaminergic dysfunction, are still lacking. Towards developing dopaminergic biomarkers of brain involvement in HIV, we assessed the pre and postsynaptic components of the dopaminergic system in the HIV-1 transgenic rat (Tg), a well-characterized model of treated HIV+ patients, using small-animal PET imaging. METHODS: Fifteen to 18 month-old Tg and wild type (WT) rats were imaged with both [18F]-FP-CMT, a dopamine transporter (DAT) ligand (n=16), and [18F]-Fallypride, a D2/D3 dopamine receptor (D2/D3DR) ligand (n=16)...
August 31, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29031089/17%C3%AE-estradiol-regulates-the-rna-binding-protein-nova1-which-then-regulates-the-alternative-splicing-of-estrogen-receptor-%C3%AE-in-the-aging-female-rat-brain
#2
Cody L Shults, Caitlin B Dingwall, Chun K Kim, Elena Pinceti, Yathindar S Rao, Toni R Pak
Alternative RNA splicing results in the translation of diverse protein products arising from a common nucleotide sequence. These alternative protein products are often functional and can have widely divergent actions from the canonical protein. Studies in humans and other vertebrate animals have demonstrated that alternative splicing events increase with advanced age, sometimes resulting in pathological consequences. Menopause represents a critical transition for women, where the beneficial effects of estrogens are no longer evident; therefore, factors underlying increased pathological conditions in women are confounded by the dual factors of aging and declining estrogens...
September 14, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29029236/first-in-human-experience-with-complete-integration-of-neuromodulation-device-within-a-customized-cranial-implant
#3
Chad R Gordon, Gabriel F Santiago, Judy Huang, Gregory K Bergey, Shuya Liu, Mehran Armand, Henry Brem, William S Anderson
BACKGROUND: Neuromodulation devices have the potential to transform modern day treatments for patients with medicine-resistant neurological disease. For instance, the NeuroPace System (NeuroPace Inc, Mountain View, California) is a Food and Drug Administration (FDA)-approved device developed for closed-loop direct brain neurostimulation in the setting of drug-resistant focal epilepsy. However, current methods require placement either above or below the skull in nonanatomic locations. This type of positioning has several drawbacks including visible deformities and scalp pressure from underneath leading to eventual wound healing difficulties, micromotion of hardware with infection, and extrusion leading to premature explantation...
October 6, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29028584/diagnosis-and-treatment-options-for-sequelae-following-radiation-treatment-of-brain-tumors
#4
REVIEW
Swapnil Mehta, Aatman Shah, Henry Jung
Radiation serves an important role in the treatment of metastatic and primary brain tumors. Radiation carries a risk of post radiation treatment effects, such as pseudoprogression and radiation necrosis. The ability to differentiate between radiation necrosis, pseudoprogression, and tumor recurrence remains a diagnostic conundrum with varying treatment options. In this review, we will discuss the pathophysiology, diagnostic imaging modalities, and treatments of these post-radiation treatment effects. We focus on the latest developments in magnetic resonance imaging (MRI) modalities including imaging biomarkers and the newest therapeutics such as VEGF inhibitors, Hyperbaric Oxygen Therapy, sensitized cytotoxic T cells, and Laser Interstitial Thermal Therapy (LITT)...
October 7, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29028517/effect-of-carbamazepine-and-oxcarbazepine-on-serum-neuron-specific-enolase-in-focal-seizures-a-randomized-controlled-trial
#5
Rituparna Maiti, Biswa Ranjan Mishra, Soham Sanyal, Debadatta Mohapatra, Sansita Parida, Archana Mishra
Neuron-specific enolase (NSE) is the most investigated biomarker in the context of epilepsy and brain damage. The present study was conducted to investigate the change in serum NSE in patients with focal seizure and the effect of carbamazepine and oxcarbazepine on serum NSE. The present study is a randomized, open-label, parallel design clinical trial (ClinicalTrials.gov Identifier: NCT02705768) conducted on 60 patients of focal seizure. After recruitment, detailed history, clinical evaluations including Chalfont-National Hospital seizure severity scale (NHS3), Quality of Life in Epilepsy Inventory (QOLIE-31) and serum NSE estimation were done at baseline...
October 6, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29028480/revisiting-the-cholinergic-hypothesis-in-alzheimer-s-disease-emerging-evidence-from-translational-and-clinical-research
#6
Harald Hampel, Marsel M Mesulam, A Claudio Cuello, Ara S Khachaturian, Martin R Farlow, Peter J Snyder, Ezio Giacobini, Zaven S Khachaturian
Scientific evidence collected over the past four decades suggests that a loss of cholinergic innervation in the cerebral cortex of patients with Alzheimer's disease (AD) is an early pathogenic event correlated with cognitive impairment. This evidence led to the formulation of the "cholinergic hypothesis of AD" and the development of cholinesterase inhibitor therapies. Although approved only as symptomatic therapies, recent studies suggest that long-term use of these drugs may also have disease-modifying benefits...
October 10, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29028353/activated-microglia-targeting-dendrimer-minocycline-conjugate-as-therapeutics-for-neuroinflammation
#7
Rishi Sharma, Soo-Young Kim, Anjali Sharma, Zhi Zhang, Siva Pramodh Kambhampati, Sujatha Kannan, Rangaramanujam M Kannan
Brain related disorders have outmatched cancer and cardiovascular diseases worldwide as the leading cause of morbidity and mortality. The lack of effective therapies and the relatively dry central nervous system (CNS) drug pipeline pose formidable challenge. Superior, targeted delivery of current clinically approved drugs may offer significant potential. Minocycline has shown promise for the treatment of neurological diseases owing to its ability to penetrate the blood brain barrier (BBB), and potency. Despite its potential in the clinic, and in preclinical models, the high doses needed to affect a positive therapeutic response has led to side effects...
October 13, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29028221/quality-of-life-and-patient-reported-outcomes-following-proton-radiation-therapy-a-systematic-review
#8
Vivek Verma, Charles B Simone, Mark V Mishra
Background: As costs of cancer care rise, the importance of documenting value in oncology increases. Proton beam radiotherapy (PBT) has the potential to reduce toxicities in cancer patients, but is relatively expensive and unproven. Evaluating quality of life (QOL) and patient-reported outcomes (PROs) is essential to establishing PBT's "value" in oncologic therapy. The goal of this systematic review was to assess QOL and PROs in patients treated with PBT. Methods: Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)-guided systematic searches were conducted...
April 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29027964/microglia-and-monocytes-macrophages-polarization-reveal-novel-therapeutic-mechanism-against-stroke
#9
REVIEW
Masato Kanazawa, Itaru Ninomiya, Masahiro Hatakeyama, Tetsuya Takahashi, Takayoshi Shimohata
Stroke is a leading cause of morbidity and mortality worldwide, and consists of two types, ischemic and hemorrhagic. Currently, there is no effective treatment to increase the survival rate or improve the quality of life after ischemic and hemorrhagic stroke in the subacute to chronic phases. Therefore, it is necessary to establish therapeutic strategies to facilitate functional recovery in patients with stroke during both phases. Cell-based therapies, using microglia and monocytes/macrophages preconditioned by optimal stimuli and/or any therapies targeting these cells, might be an ideal therapeutic strategy for managing stroke...
October 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29027122/hi1a-as-a-novel-neuroprotective-agent-for-ischemic-stroke-by-inhibition-of-acid-sensing-ion-channel-1a
#10
Yandong Ren, Chengchong Li, Jinlong Chang, Rui Wang, Yuhua Wang, Xiang-Ping Chu
Strokes are the second-leading cause of death worldwide, and the cellular and molecular mechanisms underlying stroke-induced brain damage are still uncertain. The present therapy for acute ischemic stroke is limited to thrombolysis with the recombinant tissue plasminogen activator (rtPA). However, rtPA has a narrow therapeutic timeframe of 3-4.5 h, and only approximately 5% of stroke patients can benefit from rtPA treatment. Neuroprotective agents, such as N-methyl-D-aspartate receptor antagonists, have shown great promise in preclinical studies...
October 13, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/29026666/bedside-twist-drill-aspiration-of-cerebral-abscess-less-than-2-5-cm-in-size-a-case-series-and-discussion
#11
Tyler Carson, Dan Miulli
BACKGROUND: Intracranial abscess remains a potentially deadly condition despite development of newer antibiotics and improved surgical methods. Many studies have evaluated the surgical indications for abscess drainage, and it has been generally accepted that intracranial abscesses greater than 2.5 cm may best be treated with surgical intervention followed by antibiotic therapy. More recently, studies have shown good results with stereotactic aspiration of abscesses to 1 cm in size. Furthermore, a recent case series in 2014 of 103 cases of bedside twist drill aspiration of cerebral abscess >2...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29026617/cerebral-vasculitis-and-intracranial-multiple-aneurysms-in-a-child-with-lyme-neuroborreliosis
#12
Elisa Kortela, Jukka Hytönen, Jussi Numminen, Margit Overmyer, Harri Saxen, Jarmo Oksi
Introduction. Lyme borreliosis is a multisystem tick-borne disease caused by Borrelia burgdorferi. Neurological manifestations are reported in up to 15 % of adult patients with Lyme disease, while the frequency among children is higher. The most common manifestations are painful radiculopathy, facial nerve paresis and lymphocytic meningitis. Epileptic seizures and cerebral vasculitis with stroke or aneurysms are very rare complications. Case presentation. We describe a paediatric patient with sensorineural auditory dysfunction, headache, fatigue and epileptic seizures as sequelae of meningoencephalitis/Lyme neuroborreliosis (LNB) caused by B...
April 2017: JMM Case Reports
https://www.readbyqxmd.com/read/29026367/mitochondrial-encephalomyopathy-with-lactic-acidosis-and-stroke-like-episodes-melas-syndrome
#13
Caitlin Henry, Neema Patel, William Shaffer, Lillian Murphy, Joe Park, Bradley Spieler
BACKGROUND: Mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS) syndrome is a rare inherited disorder that results in waxing and waning nervous system and muscle dysfunction. MELAS syndrome may overlap with other neurologic disorders but shows distinctive imaging features. CASE REPORT: We present the case of a 28-year-old female with atypical stroke-like symptoms, a strong family history of stroke-like symptoms, and a relapsing-remitting course for several years...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/29026117/involvement-of-the-accumbal-osteopontin-interacting-transmembrane-protein-168-in-methamphetamine-induced-place-preference-and-hyperlocomotion-in-mice
#14
Kequan Fu, Yoshiaki Miyamoto, Kazuya Otake, Kazuyuki Sumi, Eriko Saika, Shohei Matsumura, Naoki Sato, Yuka Ueno, Seunghee Seo, Kyosuke Uno, Shin-Ichi Muramatsu, Atsumi Nitta
Chronic exposure to methamphetamine causes adaptive changes in brain, which underlie dependence symptoms. We have found that the transmembrane protein 168 (TMEM168) is overexpressed in the nucleus accumbens of mice upon repeated methamphetamine administration. Here, we firstly demonstrate the inhibitory effect of TMEM168 on methamphetamine-induced behavioral changes in mice, and attempt to elucidate the mechanism of this inhibition. We overexpressed TMEM168 in the nucleus accumbens of mice by using an adeno-associated virus vector (NAc-TMEM mice)...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29025926/enhancing-spinal-plasticity-amplifies-the-benefits-of-rehabilitative-training-and-improves-recovery-from-stroke
#15
Anna M Wiersma, Karim Fouad, Ian R Winship
The limited recovery that occurs following stroke happens almost entirely in the first weeks post injury. Moreover, the efficacy of rehabilitative training is limited beyond this narrow time frame. Sprouting of spared corticospinal tract axons in the contralesional spinal cord makes a significant contribution to sensorimotor recovery, but this structural plasticity is also limited to the first few weeks after stroke. Here, we tested the hypothesis that inducing plasticity in the spinal cord during chronic stroke could improve recovery from persistent sensorimotor impairment...
October 12, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29025575/biomarkers-in-pulmonary-vascular-disease-gauging-response-to-therapy
#16
Timothy J McMahon, Nathan S Bryan
Biomarkers are increasingly being investigated in the treatment of pulmonary vascular disease. In particular, the signaling pathways targeted by therapies for pulmonary arterial hypertension provide biomarkers that potentially can be used to guide therapy and to assess clinical response as an alternative to invasive procedures such as right-sided cardiac catheterization. Moreover, the growing use of combination therapy for both the initial and subsequent treatment of pulmonary arterial hypertension highlights the need for biomarkers in this treatment approach...
October 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29025172/-anti-myelin-oligodendrocyte-glycoprotein-antibodies-in-paediatric-patients-with-optic-neuritis
#17
Helmut Tegetmeyer, Andreas Merkenschlager
Background Myelin oligodendrocyte glycoprotein (MOG) is located on the surface of oligodendrocytes and myelin in the central nervous system. MOG-IgG is associated with acute disseminated encephalomyelitis (ADEM), relapsing and bilateral optic neuritis (NNO), and transverse myelitis (TM) in both paediatric and adult patients. The combination of NNO and TM or other inflammatory brain lesions is a typical feature of neuromyelitis optica spectrum disorders (NMO-SD) which are associated with specific pathogenic autoantibodies against the water channel aquaporin-4 (AQP4-IgG)...
October 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29025157/chronic-pain-after-traumatic-brain-injury-pathophysiology-and-pain-mechanisms
#18
Karen-Amanda Irvine, J David Clark
Background: Traumatic brain injury refers to a broad range of neurological, cognitive, and emotional factors that result from the application of an external force to the head. Individuals recovering from traumatic brain injury will frequently experience acute and chronic pain. Objective: The objective of this paper is to discuss the pathophysiological changes resulting from traumatic brain injury and how these may be involved in the development and persistence of pain after injury...
August 29, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29025005/correlation-of-pain-reduction-with-fmri-bold-response-in-osteoarthritis-patients-treated-with-paracetamol-randomized-double-blind-crossover-clinical-efficacy-study
#19
Yong Yue, Agron Collaku
Objective: To assess the relationship between the analgesic efficacy of extended-release paracetamol (ER-APAP) and brain blood oxygen level-dependent (BOLD) signal activation in response to painful stimulation measured by functional magnetic resonance imaging (fMRI) in patients with osteoarthritis of the knee. Methods: This placebo-controlled, double-blind, crossover, randomized trial (N = 25) comprised three treatment periods in which patients received four doses of an eight-hour ER-APAP caplet (2 x 665 mg), four doses of matched placebo, and no treatment...
August 29, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29024785/slow-intrathecal-injection-of-raavrh10-enhances-its-transduction-of-spinal-cord-and-therapeutic-efficacy-in-a-mutant-sod1-model-of-als
#20
Dongxiao Li, Chong Liu, Chunxing Yang, Dan Wang, Dongxia Wu, Yinkuang Qi, Qin Su, Guangping Gao, Zuoshang Xu, Yansu Guo
Mutant SOD1 causes amyotrophic lateral sclerosis (ALS) by a dominant gain of toxicity. Previous studies have demonstrated therapeutic potential of mutant SOD1-RNAi delivered by intrathecal (IT) injection of recombinant adeno-associated virus (rAAV). However, optimization of delivery is needed to overcome the high degree of variation in the transduction efficiency and therapeutic efficacy. Here, on the basis of our previously defined, efficient IT injection method, we investigated the influence of injection speed on transduction efficiency in the central nervous system (CNS)...
October 9, 2017: Neuroscience
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