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https://www.readbyqxmd.com/read/28339441/the-role-of-the-ligamentum-flavum-area-as-a-morphological-parameter-of-lumbar-central-spinal-stenosis
#1
Young Uk Kim, Jun Young Park, Doo Hwan Kim, Myung-Hwan Karm, Jae-Young Lee, Jee In Yoo, Sung Won Chon, Jeong Hun Suh
BACKGROUND: Hypertrophy of the ligamentum flavum (LF) has been considered as a major cause of lumbar central spinal stenosis (LCSS). Previous studies have found that ligamentum flavum thickness (LFT) is correlated with aging, disc degeneration, and lumbar spinal stenosis. However, hypertrophy is different from thickness. Thus, to evaluate hypertrophy of the whole LF, we devised a new morphological parameter, called the ligamentum flavum area (LFA). OBJECTIVES: We hypothesized that the LFA is a key morphologic parameter in the diagnosis of LCSS...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28338565/corneal-nerve-morphology-sensitivity-and-tear-neuropeptides-in-contact-lens-wear
#2
Blanka Golebiowski, Cecilia Chao, Fiona Stapleton, Isabelle Jalbert
PURPOSE: To determine tear neuropeptide levels in contact lens wearers and non-wearers, and to examine relationships with indices of corneal innervation, tear function, and ocular discomfort. METHODS: A cross-sectional, single-visit, investigator-masked pilot study. Assessments included Ocular Comfort Index (OCI), central and mid-peripheral corneal nerve density and morphology (HRT-Rostock), corneal sensitivity (Cochet-Bonnet aesthesiometer), tear Substance P and calcitonin gene-related peptide (CGRP) concentration (ELISA), in situ tear osmolarity (TearLab), tear secretion (Phenol Red Thread), and noninvasive tear break-up time (NITBUT; Keeler Tearscope)...
April 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28338524/chronic-boutonniere-deformities-supple-or-stiff-a-new-surgical-technique-with-early-mobilization-in-11-cases
#3
Elodie Dubois, Frederic Teboul, Thomas Bihel, Jean-N Goubier
Injuries to the central slip of the extensor mechanism can lead to a Boutonniere deformity with important functional consequences. We report a series of 11 patients treated by lengthening-dorsalizing the lateral bands and tightening the central slip with early mobilization. The average age of the patients was 42 years (14;52). The extension defect of the proximal interphalangeal (PIP) joint was 64 degrees (80;55) and the hyperextension of the distal interphalangeal joint was 10 degrees (15;5). The surgery was performed with peripheral nerve block (sensitive), allowing dynamic adjustment of the tendinous sutures...
March 23, 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28338115/resveratrol-supplementation-in-patients-with-non-alcoholic-fatty-liver-disease-systematic-review-and-meta-analysis
#4
REVIEW
Ahmed Elgebaly, Ibrahim A I Radwan, Mohamed M AboElnas, Hamza H Ibrahim, Moutaz F M Eltoomy, Ahmed A Atta, Hend A Mesalam, Alaa A Sayed, Amr A Othman
BACKGROUND: Resveratrol is a potential treatment option for management of non-alcoholic fatty liver disease (NAFLD) due to its anti-inflammatory, antioxidant properties, and calorie restriction-like effects. We aimed to synthesise evidence from published randomized clinical trials (RCTs) about the efficacy of resveratrol in the management of NAFLD. METHODS: A computer literature search of PubMed, Scopus, Web of Science, and Cochrane Central was conducted using relevant keywords...
March 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28337957/transplantation-of-cultured-olfactory-bulb-cells-prevents-abnormal-sensory-responses-during-recovery-from-dorsal-root-avulsion-in-the-rat
#5
Andrew Collins, Daqing Li, Stephen B McMahon, Geoffrey Raisman, Ying Li
The central branches of the C7 and C8 dorsal roots were avulsed close to their entry point into the spinal cord in adult rats. The forepaw responses to heat and cold stimuli were tested at 1, 2 and 3 weeks after injury. Over this period the paws were sensitive to both stimuli at 1-2 weeks and returned towards normal at 3 weeks. Immunohistology showed no evidence of axonal regeneration into the spinal cord in a control group of rats with avulsion only, implying that adjacent dorsal roots and their corresponding dermatomes were involved in the recovery...
March 23, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28337884/neurochemical-effects-of-photobiostimulation-in-the-trigeminal-ganglion-after-inferior-alveolar-nerve-injury
#6
D O Martins, F M Santos, L R G Britto, J B D Lemos, M Chacur
Orofacial pain is associated with peripheral and central sensitization of trigeminal nociceptive neurons. Nerve injury results in release of chemical mediators that contribute to persistent pain conditions. The activation of the transient receptor potential vanilloid 1 (TRPV1), promotes release of calcitonin gene-related peptide (CGRP) and substance P (SP) from trigeminal nerve terminals. CGRP and SP contribute to the development of peripheral hyperalgesia. The expression of SP and CGRP by primary afferent neurons is rapidly increased in response to peripheral inflammation...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337585/background-gamma-radiation-and-childhood-cancer-in-germany-an-ecological-study
#7
Claudia Spix, Bernd Grosche, Martin Bleher, Peter Kaatsch, Peter Scholz-Kreisel, Maria Blettner
The relationship of low-dose background gamma radiation and childhood leukaemia was investigated in a number of studies. Results from these studies are inconclusive. Therefore, in the present study 25 years of German childhood cancer data were analyzed using interpolated background annual gamma dose rate per community in an ecological study. The main question was leukaemia; as exploratory questions we investigate central nervous system (CNS) tumours, thyroid carcinomas and diagnoses less likely to be related to radiation...
March 23, 2017: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/28336681/accuracy-and-reliability-of-stroke-diagnosis-in-the-pediatric-emergency-department
#8
Mark T Mackay, Adriana Yock-Corrales, Leonid Churilov, Paul Monagle, Geoffrey A Donnan, Franz E Babl
BACKGROUND AND PURPOSE: Access to acute stroke interventions in the emergency department (ED) relies on correct clinical diagnosis. Our aims were to determine the accuracy and reliability of pediatric ED physician diagnosis of childhood stroke and other conditions presenting with brain attack symptoms. METHODS: Prospective study of consecutive children aged 1 month to 18 years presenting to the ED from June 2009 to December 2010 with focal neurological deficits...
March 23, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28336480/can-a-commercially-available-epid-dosimetry-system-detect-small-daily-patient-setup-errors-for-cranial-imrt-srs
#9
Emmelyn S Hsieh, Katherine S Hansen, Michael S Kent, Sanjeev Saini, Sonja Dieterich
PURPOSE: The purpose of this study was to determine if the Sun Nuclear PerFRACTION electronic portal imager device dosimetry software would be able to detect setup errors in a clinical setting and would be able to correctly identify the direction in which the setup error was introduced. METHODS AND MATERIALS: A 7-field intensity modulated radiation therapy (IMRT) treatment plan for a centrally located tumor was developed for 1 phantom and 5 canine cadaver heads...
December 24, 2016: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28336479/radiosurgical-target-distance-from-the-root-entry-zone-in-the-treatment-of-trigeminal-neuralgia
#10
Justin Sharim, Wei-Lun Lo, Won Kim, Srinivas Chivukula, Stephen Tenn, Tania Kaprealian, Nader Pouratian
PURPOSE: Stereotactic radiosurgery (SRS) provides a noninvasive treatment modality for patients with medically refractory trigeminal neuralgia. The root entry zone (REZ) has been proposed to be an ideal stereotactic target because it is partially composed of centrally produced myelin, conferring a theoretical increased sensitivity to irradiation as well as increased susceptibility to neurovascular conflict, making it the site in which nociceptive signals likely arise. The aim of this study is to determine if there is a statistically and clinically significant difference in pain relief or facial hypesthesia following SRS based on distance of the stereotactic isocenter from REZ...
December 23, 2016: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28334978/therapeutic-window-of-dopamine-d2-3-receptor-occupancy-to-treat-psychosis-in-alzheimer-s-disease
#11
Suzanne Reeves, Emma McLachlan, Julie Bertrand, Fabrizia D Antonio, Stuart Brownings, Akshay Nair, Suki Greaves, Alan Smith, David Taylor, Joel Dunn, Paul Marsden, Robert Kessler, Robert Howard
Antipsychotic drugs, originally developed to treat schizophrenia, are used to treat psychosis, agitation and aggression in Alzheimer's disease. In the absence of dopamine D2/3 receptor occupancy data to inform antipsychotic prescribing for psychosis in Alzheimer's disease, the mechanisms underpinning antipsychotic efficacy and side effects are poorly understood. This study used a population approach to investigate the relationship between amisulpride blood concentration and central D2/3 occupancy in older people with Alzheimer's disease by combining: (i) pharmacokinetic data (280 venous samples) from a phase I single (50 mg) dose study in healthy older people (n = 20, 65-79 years); (ii) pharmacokinetic, 18F-fallypride D2/3 receptor imaging and clinical outcome data on patients with Alzheimer's disease who were prescribed amisulpride (25-75 mg daily) to treat psychosis as part of an open study (n = 28; 69-92 years; 41 blood samples, five pretreatment scans, 19 post-treatment scans); and (iii) 18F-fallypride imaging of an antipsychotic free Alzheimer's disease control group (n = 10, 78-92 years), to provide additional pretreatment data...
February 4, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334493/glucose-metabolism-in-mammalian-photoreceptor-inner-and-outer-segments
#12
REVIEW
Daniel S Narayan, Glyn Chidlow, John Pm Wood, Robert J Casson
Photoreceptors are the first order neurons of the visual pathway, converting light into electrical signals. Rods and cones are the two main types of photoreceptors in the mammalian retina. Rods are specialized for sensitivity at the expense of resolution and are responsible for vision in dimly lit conditions. Cones are responsible for high acuity central vision and colour vision. Many human retinal diseases are characterized by a progressive loss of photoreceptors. Photoreceptors consist of four primary regions: outer segments, inner segments, cell bodies, and synaptic terminals...
March 23, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28334435/withdrawn-radioisotopes-for-metastatic-bone-pain
#13
REVIEW
Marta Roqué I Figuls, Maria José Martinez-Zapata, Martin Scott-Brown, Pablo Alonso-Coello
BACKGROUND: This is an update of the review published in Issue 4, 2003. Bone metastasis cause severe pain as well as pathological fractures, hypercalcaemia and spinal cord compression. Treatment strategies currently available to relieve pain from bone metastases include analgesia, radiotherapy, surgery, chemotherapy, hormone therapy, radioisotopes and bisphosphonates. OBJECTIVES: To determine efficacy and safety of radioisotopes in patients with bone metastases to improve metastatic pain, decrease number of complications due to bone metastases and improve patient survival...
March 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28333961/phytochemical-investigation-of-aloe-pulcherrima-roots-and-evaluation-for-its-antibacterial-and-antiplasmodial-activities
#14
Dele Abdissa, Girma Geleta, Ketema Bacha, Negera Abdissa
Medicinal plants with documented traditional uses remain an important source for the treatment of a wide range of ailments. Evidence shows that majority of the Ethiopian population are still dependent on traditional medicine. Aloe pulcherrima Gilbert & Sebsebe is one of the endemic Aloe species traditionally used for the treatment of malaria and wound healing in central, Southern and Northern part of Ethiopia. The aim of the current study was, therefore, to isolate active compounds from roots of A. pulcherrima and evaluate for their antibacterial and antiplasmodial activities using standard test strains...
2017: PloS One
https://www.readbyqxmd.com/read/28333881/outer-retinal-layer-thickness-as-good-visual-predictor-in-patients-with-diabetic-macular-edema
#15
Tamer F Eliwa, Mahdi A Hussein, Mohamed A Zaki, Osama A Raslan
PURPOSE: To evaluate the relationship between outer retinal layer (ORL) thickness in diabetic macular edema to visual acuity (VA). METHODS: Ninety-five eyes were included in this prospective nonrandomized case-control study. They divided into 30 cases of healthy normal subjects and 65 cases of nonproliferative diabetic retinopathy with diabetic macular edema. Complete ophthalmic examination and spectral domain-optical coherence tomography were done for all cases and analyzed to measure central foveal point thickness (CFT), ORL thickness at fovea, and subfoveal choroidal thickness...
March 22, 2017: Retina
https://www.readbyqxmd.com/read/28332519/simultaneous-tracking-of-spin-angle-and-amplitude-beyond-classical-limits
#16
Giorgio Colangelo, Ferran Martin Ciurana, Lorena C Bianchet, Robert J Sewell, Morgan W Mitchell
Measurement of spin precession is central to extreme sensing in physics, geophysics, chemistry, nanotechnology and neuroscience, and underlies magnetic resonance spectroscopy. Because there is no spin-angle operator, any measurement of spin precession is necessarily indirect, for example, it may be inferred from spin projectors at different times. Such projectors do not commute, and so quantum measurement back-action-the random change in a quantum state due to measurement-necessarily enters the spin measurement record, introducing errors and limiting sensitivity...
March 22, 2017: Nature
https://www.readbyqxmd.com/read/28332268/comparison-between-direct-and-indirect-methods-to-diagnosis-of-malnutrition-and-cardiometabolic-risk-in-haemodialysis-patients
#17
K P Balbino, A P S Epifânio, S M R Ribeiro, L D M da Silva, M G Gouvea, H H M Hermsdorff
BACKGROUND: The present study aimed to evaluate the nutritional status of patients undergoing haemodialysis (HD) by comparing nutritional risk scores with biochemical, anthropometric and body composition variables. METHODS: Eighty-five individuals [65.9% male, mean (SD) age 62 (14) years] participated in a cross-sectional study. Global Objective Assessment (GOA) and Modified Global Subjective Assessment (mGSA) scores, as well as biochemical, anthropometric and body composition data, were collected using standardised procedures...
March 22, 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28332190/impact-of-disease-prevalence-adjustment-on-hospitalization-rates-for%C3%A2-chronic-ambulatory-care-sensitive-conditions-in-germany
#18
Johannes Pollmanns, Patrick S Romano, Maria Weyermann, Max Geraedts, Saskia E Drösler
OBJECTIVES: To explore effects of disease prevalence adjustment on ambulatory care-sensitive hospitalization (ACSH) rates used for quality comparisons. DATA SOURCES/STUDY SETTING: County-level hospital administrative data on adults discharged from German hospitals in 2011 and prevalence estimates based on administrative ambulatory diagnosis data were used. STUDY DESIGN: A retrospective cross-sectional study using in- and outpatient secondary data was performed...
March 22, 2017: Health Services Research
https://www.readbyqxmd.com/read/28331979/clinical-and-radiological-factors-related-to-the-presence-of-motor-deficit-in-lumbar-disc-prolapse-a-prospective-analysis-of-70-consecutive-cases-with-neurological-deficit
#19
Vibhu Krishnan, Shanmuganathan Rajasekaran, Siddharth N Aiyer, Rishi Kanna, Ajoy Prasad Shetty
PURPOSE: To analyse the clinic-radiological factors associated with neurological deficit following lumbar disc herniation. METHODS: A prospective, cross-sectional study was performed in 140 cases of micro-discectomy following lumbar disc herniation. Group 1 included 70 consecutive patients with motor deficit and group 2 (controls) included 70 patients with intact neurology. Motor deficit was defined as the occurrence of motor power ≤3/5 in L2-S1 myotomes. Multiple clinical and radiological parameters were studied between the two groups...
March 22, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28331597/pollinator-population-size-and-pollination-ecosystem-service-responses-to-enhancing-floral-and-nesting-resources
#20
Johanna Häussler, Ullrika Sahlin, Charlotte Baey, Henrik G Smith, Yann Clough
Modeling pollination ecosystem services requires a spatially explicit, process-based approach because they depend on both the behavioral responses of pollinators to the amount and spatial arrangement of habitat and on the within- and between-season dynamics of pollinator populations in response to land use. We describe a novel pollinator model predicting flower visitation rates by wild central-place foragers (e.g., nesting bees) in spatially explicit landscapes. The model goes beyond existing approaches by: (1) integrating preferential use of more rewarding floral and nesting resources; (2) considering population growth over time; (3) allowing different dispersal distances for workers and reproductives; (4) providing visitation rates for use in crop pollination models...
March 2017: Ecology and Evolution
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