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https://www.readbyqxmd.com/read/29679543/retrograde-influences-of-scg-axotomy-on-uninjured-preganglionic-neurons
#1
Sean M Gannon, Kiel Hawk, Brian F Walsh, Aminata Coulibaly, Lori G Isaacson
There is evidence that neuronal injury can affect uninjured neurons in the same neural circuit. The overall goal of this study was to understand the effects of peripheral nerve injury on uninjured neurons located in the central nervous system (CNS). As a model, we examined whether axotomy (transection of postganglionic axons) of the superior cervical ganglion (SCG) affected the uninjured, preganglionic neurons that innervate the SCG. At 7 days post-injury a reduction in choline acetyltransferase (ChAT) and synaptophysin immunoreactivity in the SCG, both markers for preganglionic axons, was observed, and this reduction persisted at 8 and 12 weeks post-injury...
April 18, 2018: Brain Research
https://www.readbyqxmd.com/read/29679185/comparing-learning-curves-of-two-established-single-shot-devices-for-ablation-of-atrial-fibrillation
#2
Patrick Leitz, G Mönnig, F Güner, D G Dechering, K Wasmer, F Reinke, Philipp S Lange, L Eckardt, G Frommeyer
PURPOSE: We compared the contour of learning curves of two "single-shot" devices used for pulmonary vein isolation (PVI) for safety and procedural data. METHODS: We performed a retrospective analysis comparing the first 60 PVI performed at our center using a pulmonary vein ablation catheter (PVAC) array (39 male, mean age 57 years, 42 paroxysmal AF) to the first 60 first PVI using the Cryoballoon (44 male, mean age 59 years, 22 paroxysmal AF). Both groups were further divided into tertiles, where T1 regroups the first 20 ablations, T2 the following 20, and T3 the last 20 ablations...
April 20, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29678782/early-feasibility-of-hypoglossal-nerve-upper-airway-stimulator-in-patients-with-cardiac-implantable-electronic-devices-and-continuous-positive-airway-pressure-intolerant-severe-obstructive-sleep-apnea
#3
Valay Parikh, Erica Thaler, Masanari Kato, M Boyd Gillespie, Shaun Nguyen, Kirk Withrow, David Calhoun, Ryan Soose, Damien Stevens, Suzanne Stevens, Chris Larsen, Madhu Reddy, Dhanunjaya Lakkireddy
BACKGROUND: Implantable hypoglossal nerve upper airway stimulation (HNS) is a novel, FDA approved strategy for management of moderate to severe obstructive sleep apnea(OSA) patients with continuous positive airway pressure (CPAP) therapy intolerance or failure. Due to proximity of Cardiac Implantable Electronic Devices (CIED) and this stimulator, interaction between these devices is theoretically possible. OBJECTIVE: The purpose of this study was to assess interactions between implantable hypoglossal nerve upper airway stimulator device and cardiac implantable electronic devices...
April 17, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29678701/seeing-floaters-a-case-report-and-literature-review-of-intraventricular-migration-of-silicone-oil-tamponade-material-for-retinal-detachment
#4
Matthew B Potts, Alex C Wu, David J Rusinak, Kartik Kesavabhotla, Babak S Jahromi
BACKGROUND: Intraocular injection of silicone oil is commonly performed during vitrectomy to tamponade the retina in place for treatment of retinal detachment. Although rare, this intravitreal silicone can migrate through the optic nerve and chiasm and enter the cerebral ventricles. CASE DESCRIPTION: Here we present a case report of a patient presenting with headache and intraventricular hyperdensities on computed tomography imaging raising concern for intraventricular hemorrhage...
April 17, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29678320/care-of-the-patient-with-a-peripheral-nerve-block
#5
Oluwatobi O Hunter, T Edward Kim, Edward R Mariano, T Kyle Harrison
Long-acting peripheral nerve blocks provide effective postoperative pain management, but there are risks associated with rendering an extremity insensate. Perianesthesia nurses play a major role in anticipating and mitigating risks and carefully monitoring patients for potential complications. This article presents uncommon but important considerations related to the care of patients with a peripheral nerve block. These include compartment syndrome, local anesthetic systemic toxicity, thermal injuries, falls, and fractures as well as their management and prevention...
April 17, 2018: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/29678293/use-of-occipital-nerve-block-in-emergency-department-treatment-of-status-migrainosus-a-case-report
#6
Justin Yanuck, Ariana Nelson, Maxwell Jen
Migraine headaches make up a significant proportion of emergency department visits. There are multiple pharmacologic treatment modalities for migraine abortive therapy; however, these treatments are rarely targeted to the precise area of pain and thus elicit multiple systemic effects. It has been well established in the anesthesia pain literature that occipital nerve blocks can provide not only immediate pain relief from occipital migraines, but can also result in a long-term resolution of occipital migraines...
March 21, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29677475/molecular-and-functional-neuroscience-in-immunity
#7
Valentin A Pavlov, Sangeeta S Chavan, Kevin J Tracey
The nervous system regulates immunity and inflammation. The molecular detection of pathogen fragments, cytokines, and other immune molecules by sensory neurons generates immunoregulatory responses through efferent autonomic neuron signaling. The functional organization of this neural control is based on principles of reflex regulation. Reflexes involving the vagus nerve and other nerves have been therapeutically explored in models of inflammatory and autoimmune conditions, and recently in clinical settings...
April 26, 2018: Annual Review of Immunology
https://www.readbyqxmd.com/read/29677375/characteristics-of-retinal-structural-and-microvascular-alterations-in-early-type-2-diabetic-patients
#8
Qi Chen, Fan Tan, Yufei Wu, Xiran Zhuang, Chaoming Wu, Yuheng Zhou, Yingzi Li, Dan Cheng, Jianhua Wang, Fan Lu, Meixiao Shen
Purpose: To investigate early retinal structural and microvascular changes in patients with type 2 diabetes mellitus (DM) and to analyze relationships among the retinal structure, microvasculature, and choroid. Methods: Seventy-seven patients with type 2 DM (40 with no diabetic retinopathy [DR], 37 with nonproliferative diabetic retinopathy [NPDR]), and 34 control subjects were enrolled. Spectral-domain optical coherence tomography, operating in radial 18-line mode, obtained macular images of the eight intraretinal layers and the choroid...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29677073/outcomes-after-cardiac-transplant-for-wild-type-transthyretin-amyloidosis
#9
Andrew N Rosenbaum, Omar F Abou Ezzeddine, Martha Grogan, Angela Dispenzieri, Sudhir Kushwaha, Alfredo Clavell, Richard C Daly, Brooks S Edwards
BACKGROUND: The true prevalence of heart failure (HF) due to wild type transthyretin amyloidosis (ATTRwt) is likely underestimated. There is a paucity of data with regard to the management of ATTRwt-related advanced HF and the natural history of extracardiac ATTRwt. METHODS: We conducted a retrospective cohort study of patients undergoing cardiac transplant (HTx) for ATTRwt at a single institution. Comprehensive clinical data, including baseline hemodynamic and echocardiographic characteristics, and posttransplant outcomes were obtained...
April 19, 2018: Transplantation
https://www.readbyqxmd.com/read/29677047/a-polymorphism-in-the-noradrenaline-transporter-gene-is-associated-with-increased-blood-pressure-in-patients-with-resistant-hypertension
#10
Nina Eikelis, Francine Z Marques, Dagmara Hering, Petra Marusic, Geoffrey A Head, Antony S Walton, Elisabeth A Lambert, Murray D Esler, Carolina I Sari, Markus P Schlaich, Gavin W Lambert
OBJECTIVES: Noradrenaline released from sympathetic nerves is rapidly inactivated via the action of the noradrenaline transporter (NET). We aimed to determine whether a single nucleotide polymorphism (SNP) in the NET gene, rs7194256, was associated with blood pressure and plasma noradrenaline concentration in patients with resistant hypertension. METHODS: Ninety-two consecutive patients with resistant hypertension participated in this study (age 62 ± 1.3 years, BMI 32 ± 0...
April 19, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29676329/optic-nerve-aplasia-a-case-series
#11
K Samyukta Sadasivan, Neelam Pawar, Meenakshi Ravindran, Ramakrishnan Rengappa
Optic nerve aplasia (ONA) is a congenital optic nerve anomaly characterized by the absence of optic nerve head, retinal blood vessels, retinal ganglion cells, and optic nerve fibers in a malformed eye. Clinically, the condition presents with the absence of perception of light, afferent pupillary defect and a fundus appearance of absent optic nerve head, and retinal vessels with associated ocular and nonocular abnormalities. Systemic anomalies have been reported with bilateral ONA, whereas unilateral ONA is seen in otherwise healthy individuals...
May 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29675271/the-relationship-between-peripheral-nerve-conduction-velocity-and-ophthalmological-findings-in-type-2-diabetes-patients-with-early-diabetic-retinopathy
#12
Azusa Ito, Hiroshi Kunikata, Masayuki Yasuda, Shojiro Sawada, Keiichi Kondo, Chihiro Satake, Kazuki Hashimoto, Naoko Aizawa, Hideki Katagiri, Toru Nakazawa
Purpose: Nerve conduction velocity (NCV) is an indicator of neuronal damage in the distal segment of the peripheral nerves. Here, we determined the association between NCV and other systemic and ocular clinical findings, in type 2 diabetes patients with early diabetic retinopathy (DR). Methods: This study included 42 eyes of 42 type 2 diabetes patients (median age: 54 years) with no DR or with mild nonproliferative DR. Standard statistical techniques were used to determine associations between clinical findings...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29674968/peripherally-administered-y-2-receptor-antagonist-biie0246-prevents-diet-induced-obesity-in-mice-with-excess-neuropeptide-y-but-enhances-obesity-in-control-mice
#13
Liisa Ailanen, Laura H Vähätalo, Henriikka Salomäki-Myftari, Satu Mäkelä, Wendy Orpana, Suvi T Ruohonen, Eriika Savontaus
Neuropeptide Y (NPY) plays an important role in the regulation of energy homeostasis in the level of central and sympathetic nervous systems (SNSs). Genetic silencing of peripheral Y2 -receptors have anti-obesity effects, but it is not known whether pharmacological blocking of peripheral Y2 -receptors would similarly benefit energy homeostasis. The effects of a peripherally administered Y2 -receptor antagonist were studied in healthy and energy-rich conditions with or without excess NPY. Genetically obese mice overexpressing NPY in brain noradrenergic nerves and SNS (OE-NPYDβH ) represented the situation of elevated NPY levels, while wildtype (WT) mice represented the normal NPY levels...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29673567/electric-acoustic-forward-masking-in-cochlear-implant-users-with-ipsilateral-residual-hearing
#14
Marina Imsiecke, Benjamin Krüger, Andreas Büchner, Thomas Lenarz, Waldo Nogueira
In order to investigate the temporal mechanisms of the auditory system, psychophysical forward masking experiments were conducted in cochlear implant users who had preserved acoustic hearing in the ipsilateral ear. This unique electric-acoustic stimulation (EAS) population allowed the measurement of threshold recovery functions for acoustic or electric probes in the presence of electric or acoustic maskers, respectively. In the electric masking experiment, the forward masked threshold elevation of acoustic probes was measured as a function of the time interval after the offset of the electric masker, i...
April 9, 2018: Hearing Research
https://www.readbyqxmd.com/read/29673377/total-hip-arthroplasty-to-treat-acetabular-protrusions-secondary-to-rheumatoid-arthritis
#15
Ping Zhen, Xusheng Li, Shenghu Zhou, Hao Lu, Hui Chen, Jun Liu
BACKGROUND: The treatment of acetabular protrusions during total hip arthroplasty of patients with rheumatoid arthritis is difficult. A lack of bone stock, deficient medial cup support, and medialization of the joint center in those with protrusio acetabuli must be addressed during acetabular reconstruction. The purpose of this study was to assess the short-term clinical results of total hip arthroplasty in patients with severe acetabular protrusions secondary to rheumatoid arthritis...
April 19, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29673258/methylglyoxal-disrupts-paranodal-axoglial-junctions-via-calpain-activation
#16
Ryan B Griggs, Leonid M Yermakov, Domenica E Drouet, Duc V M Nguyen, Keiichiro Susuki
Nodes of Ranvier and associated paranodal and juxtaparanodal domains along myelinated axons are essential for normal function of the peripheral and central nervous systems. Disruption of these domains as well as increases in the reactive carbonyl species methylglyoxal are implicated as a pathophysiology common to a wide variety of neurological diseases. Here, using an ex vivo nerve exposure model, we show that increasing methylglyoxal produces paranodal disruption, evidenced by disorganized immunostaining of axoglial cell-adhesion proteins, in both sciatic and optic nerves from wild-type mice...
January 2018: ASN Neuro
https://www.readbyqxmd.com/read/29673237/panax-notoginseng-saponins-a-review-of-its-mechanisms-of-antidepressant-or-anxiolytic-effects-and-network-analysis-on-phytochemistry-and-pharmacology
#17
REVIEW
Weijie Xie, Xiangbao Meng, Yadong Zhai, Ping Zhou, Tianyuan Ye, Zhen Wang, Guibo Sun, Xiaobo Sun
Panax notoginseng (Burk) F. H. Chen , as traditional Chinese medicine, has a long history of high clinical value, such as anti-inflammatory, anti-oxidation, inhibition of platelet aggregation, regulation of blood glucose and blood pressure, inhibition of neuronal apoptosis, and neuronal protection, and its main ingredients are Panax notoginseng saponins (PNS). Currently, Panax notoginseng (Burk) F. H. Chen may improve mental function, have anti-insomnia and anti-depression effects, alleviate anxiety, and decrease neural network excitation...
April 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29672828/characteristics-of-children-less-than-2-years-of-age-undergoing-anaesthesia-in-denmark-2005-2015-a-national-observational-study
#18
C Strøm, A Afshari, L H Lundstrøm, N Lohse
There are few data available that describe the current anaesthetic management of children. We have analysed anaesthetic practice and peri-operative complications for children in Denmark aged less than two years. We conducted a population-based observational cohort study using the Danish Anaesthesia Database to identify children who received anaesthesia in hospital from 1 January 2005 until 31 December 2015. Data were combined with that from the Danish National Patient Registry and the Danish Civil Registration System...
April 19, 2018: Anaesthesia
https://www.readbyqxmd.com/read/29672450/downregulation-of-adenosine-and-adenosine-1-receptor-contributes-to-neuropathic-pain-in-resiniferatoxin-neuropathy
#19
Hung-Wei Kan, Chin-Hong Chang, Chih-Lung Lin, Yi-Chen Lee, Sung-Tsang Hsieh, Yu-Lin Hsieh
The neurochemical effects of adenosine signaling in small-fiber neuropathy leading to neuropathic pain are yet to be explored in a direct manner. This study examined this system at the level of ligand (via the ectonucleotidase activity of prostatic acid phosphatase, PAP) and adenosine A1 receptors (A1Rs) in resiniferatoxin (RTX) neuropathy, a peripheral neurodegenerative disorder which specifically affects nociceptive nerves expressing transient receptor potential vanilloid type 1 (TRPV1). We conducted immunohistochemistry on dorsal root ganglion neurons (DRG), high-performance liquid chromatography (HPLC) for functional assays, and pharmacological interventions to alter PAP and A1Rs in mice with RTX neuropathy...
April 16, 2018: Pain
https://www.readbyqxmd.com/read/29672449/cortical-astrocytes-prime-the-induction-of-spine-plasticity-and-mirror-image-pain
#20
Tatsuya Ishikawa, Kei Eto, Sun Kwang Kim, Hiroaki Wake, Ikuko Takeda, Hiroshi Horiuchi, Andrew J Moorhouse, Hitoshi Ishibashi, Junichi Nabekura
Peripheral nerve injury causes maladaptive plasticity in the central nervous system and induces chronic pain. In addition to the injured limb, abnormal pain sensation can appear in the limb contralateral to the injury, called mirror image pain. Since synaptic remodeling in the primary somatosensory cortex (S1) has critical roles in the induction of chronic pain, cortical reorganization in the S1 ipsilateral to the injured limb may also accompany mirror image pain. To elucidate this, we conducted in vivo two-photon calcium imaging of neuron and astrocyte activity in the ipsilateral S1 following a peripheral nerve injury...
April 16, 2018: Pain
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