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Periphereal neurology

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https://www.readbyqxmd.com/read/29243182/the-facial-nerve-anatomy-and-associated-disorders-for-oral-health-professionals
#1
Kojiro Takezawa, Grant Townsend, Mounir Ghabriel
The facial nerve, the seventh cranial nerve, is of great clinical significance to oral health professionals. Most published literature either addresses the central connections of the nerve or its peripheral distribution but few integrate both of these components and also highlight the main disorders affecting the nerve that have clinical implications in dentistry. The aim of the current study is to provide a comprehensive description of the facial nerve. Multiple aspects of the facial nerve are discussed and integrated, including its neuroanatomy, functional anatomy, gross anatomy, clinical problems that may involve the nerve, and the use of detailed anatomical knowledge in the diagnosis of the site of facial nerve lesion in clinical neurology...
December 14, 2017: Odontology
https://www.readbyqxmd.com/read/29238502/profile-of-facial-palsy-in-arar-northern-saudi-arabia
#2
Wasan Lafi Alanazi, Nagah Mohamed Abo El-Fetoh, Shahad Lafi Alanazi, Mohammed Abdullah Alkhidhr, Mohammed Abdullah Alanazi, Dounia Saleh Alonazi, Atheer Bader Alanzi, Reem Homoud Alshammari, Mashael Jaza Alshammari, Basmah Abdullah Alanazi, Samiyah Sarhan Alanazi
Background: The term facial palsy generally refers to weakness of the facial muscles, mainly resulting from temporary or permanent damage to the facial nerve. Common causes of facial paralysis include infection or inflammation of the facial nerve, head trauma, head or neck tumor, stroke. Objective: To outline the incidence of several etiologies and the profile of patients with peripheral facial paralysis attending the outpatient clinic of the neurology department in Hospitals of Arar City, Saudi Arabia...
October 2017: Electronic Physician
https://www.readbyqxmd.com/read/29237730/an-allosteric-binding-site-of-the-%C3%AE-7-nicotinic-acetylcholine-receptor-revealed-in-a-humanized-acetylcholine-binding-protein
#3
Florian Delbart, Marijke Brams, Fabian Gruss, Sam Noppen, Steve Peigneur, Sandro Boland, Patrick Chaltin, Jose Brandao-Neto, Frank von Delft, Wouter G Touw, Robbie Joosten, Sandra Liekens, Jan Tytgat, Chris Ulens
Nicotinic acetylcholine receptors (nAChRs) belong to the family of pentameric ligand-gated ion channels and mediate fast excitatory transmission in the central and peripheral nervous systems. Among the different existing receptor subtypes, the homomeric & α7 nAChR has attracted considerable attention because of its possible implication in several neurological and psychiatric disorders, including cognitive decline associated with Alzheimer's disease or schizophrenia. Allosteric modulators of ligand-gated ion channels are of particular interest as therapeutic agents, as they modulate receptor activity without affecting normal fluctuations of synaptic neurotransmitter release...
December 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29233718/right-anterior-cerebellum-bold-responses-reflect-age-related-changes-in-simon-task-sequential-effects
#4
D Aisenberg, A Sapir, A Close, A Henik, G d'Avossa
Participants are slower to report a feature, such as color, when the target appears on the side opposite the instructed response, than when the target appears on the same side. This finding suggests that target location, even when task-irrelevant, interferes with response selection. This effect is magnified in older adults. Lengthening the inter-trial interval, however, suffices to normalize the congruency effect in older adults, by re-establishing young-like sequential effects (Aisenberg, Sapir, d'Avossa, Henik, 2014)...
December 9, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29221755/unilateral-brachial-plexopathy-a-rare-complication-of-mycoplasma-pneumoniae-infection
#5
Barbara Robnik, Darja Keše, Tereza Rojko, Alenka Horvat-Ledinek, Aleš Pražnikar, Bojana Beović
Few reports in the literature describe isolated peripheral neuropathies in relation to Mycoplasma pneumoniae infection without concurrent damage to the central nervous system. To our knowledge only a single case of mononeuritis multiplex with brachial plexus neuropathy coincident with M. pneumoniae has been documented until now. Here we present the first clinical case of lobar M. pneumoniae pneumonia in a 19-year-old female patient, where coincident neurological complications manifested as unilateral brachial plexus neuropathy, affecting axillar and suprascapular nerves...
December 5, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29218369/peripheral-nerve-ultrasound-findings-in-mucolipidosis-type-3
#6
Eoin Mulroy, Andrew M Chancellor, Luciana Pelosi
PURPOSE: The mucolipidoses are rare autosomal recessive lysosomal storage disorders. Neurologic involvement in these conditions is generally thought to be limited to cognitive delay and entrapment neuropathies (primarily carpal tunnel syndrome). We sought to evaluate peripheral nerves in this condition using nerve ultrasound. METHODS: We performed peripheral nerve ultrasound in two siblings with genetically confirmed mucolipidosis type 3 (alpha/beta). RESULTS: Peripheral nerves in mucolipidosis type 3 (alpha/beta) exhibit multifocal enlargement...
December 7, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29217656/anti-inflammatory-effects-of-omega-3-fatty-acids-in-the-brain-physiological-mechanisms-and-relevance-to-pharmacology
#7
REVIEW
Sophie Layé, Agnès Nadjar, Corinne Joffre, Richard P Bazinet
Classically, polyunsaturated fatty acids (PUFA) were largely thought to be relatively inert structural components of brain, largely important for the formation of cellular membranes. Over the past 10 years, a host of bioactive lipid mediators that are enzymatically derived from arachidonic acid, the main n-6 PUFA, and docosahexaenoic acid, the main n-3 PUFA in the brain, known to regulate peripheral immune function, have been detected in the brain and shown to regulate microglia activation. Recent advances have focused on how PUFA regulate the molecular signaling of microglia, especially in the context of neuroinflammation and behavior...
January 2018: Pharmacological Reviews
https://www.readbyqxmd.com/read/29217500/peripheral-neuropathy-as-a-complication-of-diabetic-ketoacidosis-in-a-child-with-newly-diagnosed-diabetes-type-1-case-report
#8
Marta Baszyńska-Wilk, Marta Wysocka-Mincewicz, Anna Świercz, Jolanta Świderska, Magdalena Marszał, Mieczysław Szalecki
BACKGROUND: Neurological complications of diabetic ketoacidosis are considered to be very serious clinical problem. The most common complication is cerebral edema. However this group includes also less common syndromes such as ischemic or hemorrhagic stroke, cerebral venous and sinus thrombosis or very rare peripheral neuropathy. CASE REPORT: We present a case of 9-year old girl with new onset type 1 diabetes, diabetic ketoacidosis, cerebral edema, multifocal vasogenic brain lesions and lower limbs peripheral paresis...
December 8, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/29217485/developmental-origins-of-adult-health-and-disease-the-metabolic-role-of-bdnf-from-early-life-to-adulthood
#9
REVIEW
Despina D Briana, Ariadne Malamitsi-Puchner
Accumulating evidence suggests that the origins of adult disease may occur during fetal life. Thus, the concept of "developmental programming" has been introduced and supported by epidemiological and experimental data. This concept supports the idea that the nutritional and hormonal status during pregnancy could interfere in metabolism control. The mechanisms responsible for this "developmental programming" remain poorly documented. Current research indicates that neurotrophins and particularly brain-derived neurotrophic factor (BDNF) may play a crucial role in this process...
December 4, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29214122/peripheral-nerve-sheath-tumors-of-the-upper-extremity-and-hand-in-patients-with-neurofibromatosis-type-1-topography-of-tumors-and-evaluation-of-surgical-treatment-in-62-patients
#10
Reinhard E Friedrich, Caroline Diekmeier
Objective: Neurofibromatosis type 1 (NF1) is an autosomal dominant tumor predisposition syndrome with a tendency to develop peripheral nerve sheath tumors (PNST). Plexiform neurofibromas (PNF) are detected in a high proportion of affected patients. The tumors can lead to severe disfigurement and are classified as precancerous. This study examines the surgical procedures that have been performed on large PNST of the upper limb and hand, and investigates whether a specific distribution pattern of the tumors can be detected in surgically treated cases...
2017: GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW
https://www.readbyqxmd.com/read/29214003/no-molecular-evidence-of-borna-disease-virus-among-schizophrenia-and-bipolar-disorder-patients-in-iran
#11
Somayeh Shatizadeh-Malekshahi, Hamid Reza Ahmadkhaniha, Seyed Jalal Kiani, Ahmad Nejati, Leila Janani, Jila Yavarian
Background and Objectives: Viruses have been suggested as one of the risk factors for psychiatric disorders. Among infectious agents Borna disease virus (BDV) has been known as a neurotropic virus which is able to cause neurological disorders in different animals. Recently there were controversial findings about BDV association with pathogenesis of human psychotic disorders. Materials and Methods: Here we performed a nested reverse transcription polymerase chain reaction for detection of BDV P40 RNA in peripheral blood mononuclear cell samples of schizophrenia (SC), bipolar disorder (BD) patients and healthy controls (HCs)...
April 2017: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/29212862/ataxia-with-oculomotor-apraxia-type-2-an-evolving-axonal-neuropathy
#12
Tahira N Choudry, David Hilton-Jones, Graham Lennox, Henry Houlden
A 23-year-old woman had presented initially to a podiatrist complaining of poorly fitting shoes during her adolescence. After extensive neurological review, she was diagnosed with ataxia with oculomotor apraxia type 2. This is a progressive autosomal recessive ataxia associated with cerebellar atrophy, peripheral neuropathy and an elevated serum α-fetoprotein. Within Europe, it is the most frequent autosomal recessive ataxia after Friedreich's ataxia and is due to mutations in the senataxin (SETX) gene. The age of onset is approximately 15 years...
December 6, 2017: Practical Neurology
https://www.readbyqxmd.com/read/29210178/acute-exposure-to-high-induction-electromagnetic-field-affects-activity-of-model-peripheral-sensory-neurons
#13
Jaroslav Prucha, Jan Krusek, Ivan Dittert, Viktor Sinica, Anna Kadkova, Viktorie Vlachova
Exposure to repetitive low-frequency electromagnetic field (LF-EMF) shows promise as a non-invasive approach to treat various sensory and neurological disorders. Despite considerable progress in the development of modern stimulation devices, there is a limited understanding of the mechanisms underlying their biological effects and potential targets at the cellular level. A significant impact of electromagnetic field on voltage-gated calcium channels and downstream signalling pathways has been convincingly demonstrated in many distinct cell types...
December 6, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29207948/homozygous-grid2-missense-mutation-predicts-a-shift-in-the-d-serine-binding-domain-of-glud2-in-a-case-with-generalized-brain-atrophy-and-unusual-clinical-features
#14
Zafar Ali, Shumaila Zulfiqar, Joakim Klar, Johan Wikström, Farid Ullah, Ayaz Khan, Uzma Abdullah, Shahid Baig, Niklas Dahl
BACKGROUND: Spinocerebellar ataxias comprise a large and heterogeneous group of disorders that may present with isolated ataxia, or ataxia in combination with other neurologic or non-neurologic symptoms. Monoallelic or biallelic GRID2 mutations were recently reported in rare cases with cerebellar syndrome and variable degree of ataxia, ocular symptoms, hypotonia and developmental delay. CASE PRESENTATION: We report on a consanguineous family with autosomal recessive childhood onset of slowly progressive cerebellar ataxia and delayed psychomotor development in three siblings...
December 6, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/29205794/biallelic-mutations-in-lars2-can-cause-perrault-syndrome-type-2-with-neurologic-symptoms
#15
Rika Kosaki, Reiko Horikawa, Eriko Fujii, Kenjiro Kosaki
Perrault syndrome represents a genetically heterogeneous disorder characterized by sensorineural hearing loss in males and females and ovarian dysfunction in females. Causative genes include HARS2, HSD17B4, CLPP, C10orf2, and LARS2. Some patients with Perrault syndrome exhibit neurologic features including learning disability, cerebellar ataxia, and peripheral neuropathy and are classified as type 2 and are clinically separate from those without neurological symptoms other than a hearing loss (type 1). To date, all reported patients with LARS2 mutations (15 patients in 8 families) have been classified as type 1...
December 3, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29201125/glutaric-aciduriatype-1-clinical-and-molecular-study-in-iranian-patients-3-novel-mutations
#16
Zahra Pirzadeh, Massoud Houshmand, Jafar Nasiri, Mohsen Mollamohammadi, Mostafa Sedighi, Seyed Hassan Tonekaboni
Objective: Glutaricaciduria type 1 (GA1), is a rare, treatable neuro metabolic disease, due to glutaryl- CoA dehydrogenase (GCDH) gene mutation.In regions without neonatal blood screening (NBS), patients are diagnosed in symptomatic period. This study was carried out to assess patients with GA1 for clinical, biochemical, neuroimaging findings and GCDH gene mutations analysis. Materials & Methods: In this cross-sectional study, clinical manifestation, neuroimaging and metabolic findings of eleven Iranian GA1 patients of MofidChildren's Hospital, Tehran, Iranbetween 2001 and 2011,were evaluated...
2017: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/29201025/regulation-of-neuroinflammation-what-role-for-the-tumor-necrosis-factor-like-weak-inducer-of-apoptosis-fn14-pathway
#17
REVIEW
Audrey Boulamery, Sophie Desplat-Jégo
Observed in many central nervous system diseases, neuroinflammation (NI) proceeds from peripheral immune cell infiltration into the parenchyma, from cytokine secretion and from oxidative stress. Astrocytes and microglia also get activated and proliferate. NI manifestations and consequences depend on its context and on the acute or chronic aspect of the disease. The tumor necrosis factor-like weak inducer of apoptosis (TWEAK)/Fn14 pathway has been involved in chronic human inflammatory pathologies such as neurodegenerative, autoimmune, or malignant diseases...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29200946/combined-hemorrhagic-shock-and-unilateral-common-carotid-occlusion-induces-neurological-injury-in-adult-male-rats
#18
Chung-Ching Chio, Chien-Chin Hsu, Yu-Feng Tian, Chung-Han Wang, Mao-Tsun Lin, Ching-Ping Chang, Hung-Jung Lin
Background: Clinical assessment reveals that patients after surgery of cardiopulmonary bypass or coronary bypass experience postoperative cognitive dysfunction. This study aimed to investigate whether resuscitation after a hemorrhagic shock (HS) and/or mild cerebral ischemia caused by a unilateral common carotid artery occlusion (UCCAO) can cause brain injury and concomitant neurological dysfunction, and explore the potential mechanisms. Methods: Blood withdrawal (6 mL/100 g body weight) for 60 min through the right jugular vein catheter-induced an HS...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29200675/neurolymphomatosis-a-surreal-presentation-of-lymphoma
#19
Shikha Khandelwal, Suvinay Saxena, Disha J Hansalia
Background: Neurolymphomatosis is a neurologic complication poorly recognized by neurologists and oncologists and presents usually several months after successful treatment of systemic lymphoma. Other disorders that must be differentiated from these entities include peripheral-nerve or nerve root compression and paraneoplastic neuropathy. Aim: To describe the unusual occurrence of neurolymphomatosis in a patient of B-cell lymphoma. Method: Diagnosis was made by demonstration of enhancement of nerve roots on Magnetic Resonance Imaging of the brachial, lumbosacral plexus, peripheral nerves or by increased hyper-metabolic activity along the course of affected nerves on fluorodeoxyglucose positron emission tomography (FDG-PET)...
July 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29200116/paraneoplastic-disorders
#20
Eric Lancaster
PURPOSE OF REVIEW: Paraneoplastic neurologic syndromes target specific areas of the nervous system with pathogenic autoantibodies or T-cell responses. Each syndrome conveys a risk of particular tumors. Expanded paraneoplastic antibody testing has led to improved diagnosis but created challenges involving appropriate interpretation of test results. RECENT FINDINGS: Peripheral nervous system paraneoplastic disorders such as myasthenia gravis and Lambert-Eaton myasthenic syndrome involve pathogenic autoantibodies...
December 2017: Continuum: Lifelong Learning in Neurology
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