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https://www.readbyqxmd.com/read/28106324/verbal-instructions-influence-pain-thresholds-assessment-a-study-using-manual-and-electronic-mechanical-stimulators
#1
K Suzuki, L Baad-Hansen, P Svensson
BACKGROUND: Quantitative sensory testing (QST) relies on psychophysical techniques and instructions to test subjects. This study examined the effect of different verbal instructions for mechanical pain thresholds (MPTs) using two different stimulation techniques; weighted pinprick stimulators and an electronic von Frey device (EvF). The test-retest reliability and within session variability in the MPTs for each verbal instruction were compared in addition. METHODS: Sixteen healthy volunteers participated...
January 20, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28091815/quantitative-validation-of-sensory-mapping-in-persistent-postherniorrhaphy-inguinal-pain-patients-undergoing-triple-neurectomy
#2
M F Bjurström, R Álvarez, A L Nicol, R Olmstead, P K Amid, D C Chen
PURPOSE: Neurectomy of the inguinal nerves may be considered for selected refractory cases of chronic postherniorrhaphy inguinal pain (CPIP). There is to date a paucity of easily applicable clinical tools to identify neuropathic pain and examine the neurosensory effects of remedial surgery. The present quantitative sensory testing (QST) pilot study evaluates a sensory mapping technique. METHODS: Longitudinal (preoperative, immediate postoperative, and late postoperative) dermatomal sensory mapping and a comprehensive QST protocol were conducted in CPIP patients with unilateral, predominantly neuropathic inguinodynia presenting for triple neurectomy (n = 13)...
January 13, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28067993/on-the-structure-property-relationships-of-cation-exchanged-zk-5-zeolites-for-co2-adsorption
#3
Trong Pham, Raul Lobo, Matthew Hudson, Craig Brown
The CO2 adsorption properties of cation-exchanged Li-, Na-, K-, and Mg-ZK-5 zeolites are correlated to the molecular structures determined by Rietveld refinements of synchrotron powder X-ray diffraction patterns. Li-, K-, and Na-ZK-5 all exhibit high isosteric heats of adsorption (Qst) at low CO2 coverage, with Na-ZK-5 having the highest Qst (≈49 kJ/mol). Mg2+ is located at the center of the zeolite hexagonal prism, with the cation inaccessible to CO2, leading to a much lower Qst (≈30 kJ/mol) and lower overall uptake capacity...
January 9, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28025370/prognosis-after-surgical-treatment-of-trigeminal-neuropathy-with-a-pga-c-tube-report-of-10-cases
#4
Kenji Seo, Makoto Terumitsu, Yuji Inada, Tatsuo Nakamura, Keiji Shigeno, Yutaka Tanaka
OBJECTIVE: Although surgery using a polyglycolic acid-collagen (PGA-c) tube is effective for peripheral nerve injury-induced chronic hand pain, it has not been applied to trigeminal nerve lesions because of the difficult approach. We used a PGA-c tube during surgery for trigeminal neuropathy and evaluated its prognosis based on the outcomes. DESIGN: Case report. SETTING AND PATIENTS: In the dental anesthesia division of a university hospital, 11 patients with severe dysesthesia underwent surgical repair of a damaged lingual nerve (LN) or inferior alveolar nerve (IAN)...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28004244/gender-differences-after-lumbar-sequestrectomy-a-prospective-clinical-trial-using-quantitative-sensory-testing
#5
Anja Tschugg, Wolfgang N Löscher, Sara Lener, Matthias Wildauer, Sebastian Hartmann, Sabrina Neururer, Claudius Thomé
BACKGROUND: Quantitative sensory testing (QST) gained popularity to evaluate the time course of recovery in sensory dysfunction and the results of different treatment options. Concerning sex differences in lumbar spine surgery, female gender seems to play a major role as a negative prognostic factor in different spinal disorders. For this purpose, we hypothesised that there are also comparable differences in pain patterns in men and women after lumbar sequestrectomy using QST. METHODS: We applied the QST protocol of the German Research Network on Neuropathic Pain in 53 patients (21 women and 32 men) with a single lumbar disc herniation confirmed on MRI treated by a lumbar sequestrectomy...
December 21, 2016: European Spine Journal
https://www.readbyqxmd.com/read/28001155/microporous-rod-metal-organic-frameworks-with-diverse-zn-cd-triazolate-ribbons-as-secondary-building-units-for-co2-uptake-and-selective-adsorption-of-hydrocarbons
#6
Jian-Wei Zhang, Man-Cheng Hu, Shu-Ni Li, Yu-Cheng Jiang, Quan-Guo Zhai
The synthetic design of new porous open-framework materials with pre-designed pore properties for desired applications such as gas adsorption and separation remains challenging. We proposed one such class of materials, rod metal-organic frameworks (rod MOFs), which can be tuned by using rod secondary building units (rod SBUs) with different geometrical and chemical features. Our approach takes advantage of the readily accessible metal-triazolate 1-D motifs as rod SBUs to combine with dicarboxylate ligands to prepare target rod MOFs...
December 21, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27922760/nervecheck-for-the-detection-of-sensory-loss-and-neuropathic-pain-in-diabetes
#7
Georgios Ponirakis, Maria N Odriozola, Samantha Odriozola, Ioannis N Petropoulos, Shazli Azmi, Maryam Ferdousi, Hassan Fadavi, Uazman Alam, Andrew Marshall, Maria Jeziorska, Anthony Miro, Ahmad Kheyami, Mitra Tavakoli, Ahmed Al-Ahmar, Maria B Odriozola, Ariel Odriozola, Rayaz A Malik
BACKGROUND: Accurate and economic detection of nerve damage in diabetes is key to more widespread diagnosis of patients with diabetic peripheral neuropathy (DPN) and painful diabetic neuropathy. This study examined the diagnostic performance of NerveCheck, an inexpensive ($500) quantitative sensory testing (QST) device. METHODS: One hundred forty-four subjects (74 with and 70 without diabetes) underwent assessment with NerveCheck, neuropathy disability score (NDS), nerve conduction studies (NCS), intraepidermal and corneal nerve fiber density (IENFD and CNFD), and McGill questionnaire for neuropathic pain...
December 2016: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/27911283/association-between-physical-activity-and-pain-processing-in-adults-with-chronic-low-back-pain-compared-to-pain-free-controls
#8
Lindsay C Orr, Steven Z George, Corey B Simon
BACKGROUND: Pain sensitivity has been negatively associated with physical activity levels. Few studies have examined associations between experimentally induced pain sensitivity and physical activity in adults with chronic low back pain and pain-free controls. OBJECTIVE: The objective of this study was to examine associations between physical activity levels and how an individual processes pain using experimentally induced pain stimuli. METHODS: Seventy subjects (CLBP = 49; mean age = 46...
November 25, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27904643/effects-of-nesting-and-swaddling-on-the-sleep-duration-of-premature-infants-hospitalized-in-neonatal-intensive-care-units
#9
Zahra Abdeyazdan, Maryam Mohammadian-Ghahfarokhi, Zohreh Ghazavi, Majid Mohammadizadeh
BACKGROUND: In neonatal intensive care unit (NICU), neonatal sleep is disrupted due to different factors. Due to the critical role of sleep in premature infants' brain development, this study aimed to investigate the effect of nesting and swaddling on the sleep duration of premature infants hospitalized in NICUs. MATERIALS AND METHODS: In a crossover clinical trial, 42 preterm infants who met the inclusion criteria were enrolled. They were randomly assigned to two groups of nest-swaddle and swaddle-nest...
September 2016: Iranian Journal of Nursing and Midwifery Research
https://www.readbyqxmd.com/read/27896457/the-value-of-quantitative-sensory-testing-in-spine-research
#10
Anja Tschugg, Wolfgang N Löscher, Sara Lener, Sebastian Hartmann, Matthias Wildauer, Sabrina Neururer, Claudius Thomé
The improvement of pain and functionality is the major goal of a surgical intervention. Thus, the purpose of the present prospective study was to evaluate whether subjective sensory deficits in patients with lumbar radiculopathy caused by a lumbar disc herniation are related to clinical status, using several outcome scores and the quantitative sensory testing (QST) pre- and 12 months postoperatively. We applied the QST in 52 patients with a single lumbar disc herniation treated by lumbar sequestrectomy pre- and 12 months postoperatively...
November 28, 2016: Neurosurgical Review
https://www.readbyqxmd.com/read/27893485/peripheral-neuropathic-pain-a-mechanism-related-organizing-principle-based-on-sensory-profiles
#11
Ralf Baron, Christoph Maier, Nadine Attal, Andreas Binder, Didier Bouhassira, Giorgio Cruccu, Nanna B Finnerup, Maija Haanpää, Per Hansson, Philipp Hüllemann, Troels S Jensen, Rainer Freynhagen, Jeffrey D Kennedy, Walter Magerl, Tina Mainka, Maren Reimer, Andrew S C Rice, Märta Segerdahl, Jordi Serra, Sören Sindrup, Claudia Sommer, Thomas Tölle, Jan Vollert, Rolf-Detlef Treede
Patients with neuropathic pain are heterogeneous in etiology, pathophysiology and clinical appearance. They exhibit a variety of pain-related sensory symptoms and signs (sensory profile). Different sensory profiles might indicate different classes of neurobiological mechanisms and hence subgroups with different sensory profiles might respond differently to treatment.The aim of the investigation was to identify subgroups in a large sample of neuropathic pain patients using hypothesis-free statistical methods on the database of three large multi-national research networks (German Research Network on Neuropathic Pain (DFNS), IMI-Europain, Neuropain)...
November 3, 2016: Pain
https://www.readbyqxmd.com/read/27870648/facilitated-temporal-summation-of-pain-correlates-with-clinical-pain-intensity-after-hip-arthroplasty
#12
Masashi Izumi, Kristian Kjær Petersen, Mogens Berg Laursen, Lars Arendt-Nielsen, Thomas Graven-Nielsen
Widespread hyperalgesia has been found in patients with painful hip osteoarthritis (OA) which can be normalized after total hip arthroplasty (THA) if patients have no residual postoperative pain. This study characterized the preoperative somatosensory profiles and provided possible interpretation of underlying pain mechanisms that might influence the development of postoperative pain. Forty hip OA patients with unilateral pain were assessed before and 6 weeks post-THA and compared with forty asymptomatic control subjects...
November 17, 2016: Pain
https://www.readbyqxmd.com/read/27829902/hydroxy-functionalized-hyper-cross-linked-ultra-microporous-organic-polymers-for-selective-co2-capture-at-room-temperature
#13
Partha Samanta, Priyanshu Chandra, Sujit K Ghosh
Two hydroxy-functionalized hyper-cross-linked ultra-microporous compounds have been synthesized by Friedel-Crafts alkylation reaction and characterised with different spectroscopic techniques. Both compounds exhibit an efficient carbon dioxide uptake over other gases like N2, H2 and O2 at room temperature. A high isosteric heat of adsorption (Qst) has been obtained for both materials because of strong interactions between polar -OH groups and CO2 molecules.
2016: Beilstein Journal of Organic Chemistry
https://www.readbyqxmd.com/read/27828567/factors-associated-with-negative-self-perception-of-oral-health-among-institutionalized-elderly
#14
Laércio Almeida de Melo, Meily de Mello Sousa, Annie Karoline Bezerra de Medeiros, Adriana da Fonte Porto Carreiro, Kenio Costa de Lima
The aim of this study was to determine self-perception of oral-health in institutionalized elderly, and look into the sociodemographic and clinical aspects associated with negative self-perception. One hundred and sixty-six elderly were assessed by answering a self-perception question that predicts the GOHAI (Geriatric Oral Health Assessment Index). Sociodemographic data was obtained from a previously validated questionnaire and clinical data taken from the WHO file and QST-TMD used to check the existence of TMD (temporomandibular disturbance)...
November 2016: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/27780176/a-population-based-study-of-quantitative-sensory-testing-in-adolescents-with-and-without-chronic-pain
#15
See Wan Tham, Tonya M Palermo, Amy Lewandowski Holley, Chuan Zhou, Audun Stubhaug, Anne-Sofie Furberg, Christopher Sivert Nielsen
Quantitative sensory testing (QST) has been used to characterize pain sensitivity in individuals with and without pain conditions. Research remains limited in pediatric populations, hindering the ability to expand the utility of QST toward its potential application in clinical settings and clinical predictive value. The aims of this study were to examine pain sensitivity using QST in adolescents with chronic pain compared to adolescents without chronic pain and identify predictors of pain sensitivity. A population-based study conducted from 2010 to 2011 provided data on 941 adolescents, 197 were classified as having chronic pain and 744 were classified without chronic pain...
December 2016: Pain
https://www.readbyqxmd.com/read/27776990/functional-characterization-of-at-level-hypersensitivity-in-patients-with-spinal-cord-injury
#16
Carola Vogel, Roman Rukwied, Lenka Stockinger, Marcus Schley, Martin Schmelz, Wolfgang Schleinzer, Christoph Konrad
: At-level and above-level hypersensitivity was assessed in patients with chronic complete thoracic spinal cord injury (SCI). Patients were classified using somatosensory mapping (brush, cold, pinprick) and assigned into 2 groups (ie, patients with at-level hypersensitivity [SCIHs, n = 8] and without at-level hypersensitivity [SCINHs, n = 7]). Gender and age-matched healthy subjects served as controls. Quantitative sensory testing (QST), electrically- and histamine-induced pain and itch, laser Doppler imaging, and laser-evoked potentials (LEP) were recorded at-level and above-level in SCI-patients...
January 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/27770480/agreement-between-quantitative-and-qualitative-sensory-testing-of-changes-in-oro-facial-somatosensory-sensitivity
#17
J Agbaje, A De Laat, P Constantinus, P Svensson, L Baad-Hansen
Qualitative somatosensory testing (QualST) is a simple chairside test. It can be used to roughly assess the presence or absence of altered somatosensory function. To use QualST clinically, it is important to assess its agreement with quantitative sensory testing (QST). The aims of this study were to assess the agreement between QST and QualST when testing the modulation of facial sensitivity by capsaicin in healthy participants and to explore the agreement between QST and QualST in assessing the intraoral sensory function in clinical atypical odontalgia (AO) patients...
January 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/27749073/theoretical-investigations-of-co2-and-h2-sorption-in-robust-molecular-porous-materials
#18
Tony Pham, Katherine A Forrest, Kai-Jie Chen, Amrit Kumar, Michael J Zaworotko, Brian Space
Molecular simulations of CO2 and H2 sorption were performed in MPM-1-Cl and MPM-1-TIFSIX, two robust molecular porous materials (MPMs) with the empirical formula [Cu2(adenine)4Cl2]Cl2 and [Cu2(adenine)4(TiF6)2], respectively. Recent experimental studies have shown that MPM-1-TIFSIX displayed higher CO2 uptake and isosteric heat of adsorption (Qst) than MPM-1-Cl [Nugent, P. S.; et al. J. Am. Chem. Soc. 2013, 135, 10950-10953]. This was verified through the simulations executed herein, as the presented simulated CO2 sorption isotherms and Qst values are in very good agreement with the corresponding experimental data for both MPMs...
November 8, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27723182/effect-of-medical-cannabis-on-thermal-quantitative-measurements-of-pain-in-patients-with-parkinson-s-disease
#19
A Shohet, A Khlebtovsky, N Roizen, Y Roditi, R Djaldetti
BACKGROUND: Cannabis can alleviate pain of various etiologies. This study assessed the effect of cannabis on motor symptoms and pain parameters in patients with Parkinson's disease (PD). METHODS: Twenty patients with PD who were licensed to use cannabis underwent evaluation before and 30 min after cannabis consumption and again after long-term use. Motor function was assessed with the Unified PD Rating scale (UPDRS) by two raters, one blinded. Pain was assessed with the Pain Rating Index (PRI) and Visual Analogue Scale (VAS) of the short-form McGill Pain Questionnaire...
October 10, 2016: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/27696852/multifunctional-porous-organic-polymers-tuning-of-porosity-co2-and-h2-storage-and-visible-light-driven-photocatalysis
#20
Sujoy Bandyopadhyay, Amith G Anil, Anto James, Abhijit Patra
A series of porous organic polymers (POPs) were fabricated based on the boron dipyrromethene (BODIPY) core. The variation of the substituents in the BODIPY core and the fine tuning of the Sonogashira polycondenzation reaction with 1,3,5-triethynylbenzene led to the formation of POPs with a wide range of surface area and porosity. A tenfold increase in surface area from 73 m2g-1 in BDT1a polymer to 1010 m2g-1 in BDT3 was obtained. Simultaneously, the porosity was changed from mesoporous to ultramicroporous. The surface area of BDT3 turned out to be the highest reported so far for BODIPY based POPs...
October 3, 2016: ACS Applied Materials & Interfaces
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