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https://www.readbyqxmd.com/read/29456508/the-molecular-determinants-of-small-molecule-ligand-binding-at-p2x-receptors
#1
Gaia Pasqualetto, Andrea Brancale, Mark T Young
P2X receptors are trimeric eukaryotic ATP-gated cation channels. Extracellular ATP-their physiological ligand-is released as a neurotransmitter and in conditions of cell damage such as inflammation, and substantial evidence implicates P2X receptors in diseases including neuropathic pain, cancer, and arthritis. In 2009, the first P2X crystal structure, Danio rerio P2X4 in the apo - state, was published, and this was followed in 2012 by the ATP-bound structure. These structures transformed our understanding of the conformational changes induced by ATP binding and the mechanism of ligand specificity, and enabled homology modeling of mammalian P2X receptors for ligand docking and rational design of receptor modulators...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29456415/gastroenteritis-in-an-adult-female-revealing-hemolytic-uremic-syndrome-case-report
#2
Paulina Chinchilla-López, Vania Cruz-Ramón, Oscar Ramírez-Pérez, Nahum Méndez-Sánchez
Nowadays acute gastroenteritis infection caused by Escherichia coli ( E. coli ) O157:H7 is frequently associated with hemolytic uremic syndrome (HUS), which usually developed after prodromal diarrhea that is often bloody. The abdominal pain accompanied by failure kidney is a suspicious symptom to develop this disorder. Their pathological characteristic is vascular damage which manifested as arteriolar and capillary thrombosis with abnormalities in the endothelium and vessel walls. The major etiological agent of HUS is enterohemorragic ( E coli ) strain belonging to serotype O157:H7...
February 14, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29454336/change-in-physical-activity-level-and-clinical-outcomes-in-older-adults-with-knee-pain-a-secondary-analysis-from-a-randomised-controlled-trial
#3
Jonathan G Quicke, Nadine E Foster, Peter R Croft, Reuben O Ogollah, Melanie A Holden
BACKGROUND: Exercise interventions improve clinical outcomes of pain and function in adults with knee pain due to osteoarthritis and higher levels of physical activity are associated with lower severity of pain and higher levels of physical functioning in older adults with knee osteoarthritis in cross-sectional studies. However, to date no studies have investigated if change in physical activity level during exercise interventions can explain clinical outcomes of pain and function. This study aimed to investigate if change in physical activity during exercise interventions is associated with future pain and physical function in older adults with knee pain...
February 17, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29453039/tolerance-for-psychological-pain-and-capability-for-suicide-contributions-to-suicidal-ideation-and-behavior
#4
Esther L Meerwijk, Sandra J Weiss
Among people with suicide ideation most do not attempt suicide or die by suicide. In this online study of adult US Facebook users (n = 219), we examined capability for suicide, operationalized as fearlessness about death, and tolerance for psychological pain as potential variables that may explain why some people move from suicide ideation to suicidal behavior. Tolerance for psychological pain was significantly higher for participants who had never attempted suicide. Fearlessness about death was higher in participants who had attempted suicide, but not significantly...
February 3, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29452957/a-systematic-review-of-the-efficacy-and-limitations-of-venous-intervention-in-stasis-ulceration
#5
REVIEW
Myriam L Montminy, Arjun Jayaraj, Seshadri Raju
BACKGROUND: Surgical techniques to address various components of chronic venous disease are rapidly evolving. Their efficacy and generally good results in treating superficial venous reflux (SVR) have been documented and compared in patients presenting with pain and swelling. A growing amount of literature is now available suggesting their efficacy in patients with venous leg ulcer (VLU). This review attempts to summarize the efficacy and limitations of commonly used venous interventions in the treatment of SVR and incompetent perforator veins (IPVs) in patients with VLU...
February 13, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29450872/-turkish-validity-and-reliability-study-of-fear-of-pain-questionnaire-iii
#6
Seher Ünver, Fatma Nesrin Turan
OBJECTIVES: This study aimed to develop a Turkish version of the Fear of Pain Questionnaire-III developed by McNeil and Rainwater (1998) and examine its validity and reliability indicators. METHODS: The study was conducted with 459 university students studying in the nursing department. The Turkish translation of the scale was conducted by language experts and the original scale owner. Expert opinions were taken for language validity, and the Lawshe's content validity ratio formula was used to calculate the content validity...
January 2018: Aǧrı: Ağrı (Algoloji) Derneği'nin Yayın Organıdır, the Journal of the Turkish Society of Algology
https://www.readbyqxmd.com/read/29441291/nail-biopsy-a-user-s-manual
#7
REVIEW
Chander Grover, Shikha Bansal
Nail biopsy is a procedure not routinely resorted to; but when indicated, it is often the only clue left for diagnosis. At such times, it pays to be conversant with it. It is an investigation that not only provides etiologic, diagnostic, and prognostic information but also aids in understanding the pathogenesis of nail diseases. It can be of therapeutic value, especially with respect to nail tumors. This article compiles the procedural techniques for nail biopsy of various types and attempts to summarize the evidence available in the literature...
January 2018: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/29439291/neurobiological-features-of-fibromyalgia-are-also-present-among-rheumatoid-arthritis-patients
#8
Neil Basu, Chelsea M Kaplan, Eric Ichesco, Tony Larkin, Richard E Harris, Alison Murray, Gordon Waiter, Daniel J Clauw
OBJECTIVES: Many rheumatoid arthritis (RA) patients report pain despite excellent control of inflammation with immunotherapies. Variable degrees of co-existing fibromyalgia (FM) may explain this disparity. FM has been characterised by aberrant brain functional connectivity, especially between the Default Mode Network (DMN) and insula. We hypothesised that RA patients reporting the highest 2011 ACR FM survey criteria scores- a continuous measure of FM degree also known as fibromyalgianess (FMness)- would demonstrate functional connectivity abnormalities similar to FM...
February 13, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29438226/racial-differences-in-presentations-and-predictors-of-acute-pain-following-motor-vehicle-collision
#9
Francesca L Beaudoin, Roee Gutman, Wanting Zhai, Roland C Merchant, Melissa A Clark, Kenneth A Bollen, Phyllis Hendry, Michael C Kurz, Christopher Lewandowski, Claire Pearson, Brian O'Neil, Elizabeth Datner, Patricia Mitchell, Robert Domeier, Samuel A McLean
African-Americans experience a greater burden of acute pain than non-Hispanic white individuals across of variety of acute medical conditions, but it is unknown if this is the case following trauma. We evaluated pain, pain-related characteristics (e.g. peri-traumatic distress), and analgesic treatment in two cohorts of individuals (African-American (n=931) and non-Hispanic white (n=948)) presenting to the emergency department after a motor-vehicle crash (MVC). We performed a propensity-matched analysis (n=796 in each group) to assess racial differences in acute pain in the ED...
February 9, 2018: Pain
https://www.readbyqxmd.com/read/29438225/traits-associated-with-central-pain-augmentation-in-the-knee-pain-in-the-community-kpic-cohort
#10
Kehinde Akin-Akinyosoye, Nadia Frowd, Laura Marshall, Joanne Stocks, Gwen Fernandes, Ana Valdes, Daniel F McWilliams, Weiya Zhang, Michael Doherty, Eamonn Ferguson, David A Walsh
This study aimed to identify self-report correlates of central pain augmentation in individuals with knee pain. A subset of participants (n=420) in the Knee Pain and related health In the Community (KPIC) baseline survey undertook pressure pain threshold (PPT) assessments. Items measuring specific traits related to central pain mechanisms were selected from the survey based on expert consensus, face validity, item association to underlying constructs measured by originating host questionnaires, adequate targeting and PPT correlations...
February 9, 2018: Pain
https://www.readbyqxmd.com/read/29421938/uncertainty-of-parents-with-children-undergoing-herniorrhaphy
#11
Kai-Wei K Wang, I-Hung Chen, Marcelo Chen
This study reports the association between parental uncertainty and characteristics of 123 parent-child dyads prior to the child's herniorrhaphy. A cross-sectional study design and Mishel's Parents' Perception of Uncertainty Scale (PPUS) were used. Parent participants were married (98%), had a university degree (45%), identified with a religion (77%), and worked (69%). More boys (76%) than girls (23%) underwent herniorrhaphy (average age = 2.26 years); 60% were the first-born child and 25% were premature. More children presented with unilateral (63...
March 2018: Clinical Nursing Research
https://www.readbyqxmd.com/read/29421808/pathophysiology-of-functional-gastrointestinal-disorders-a-holistic-overview
#12
Gerald Holtmann, Ayesha Shah, Mark Morrison
Background and Summary: Traditionally, functional gastrointestinal disorders (FGID), including functional dyspepsia or irritable bowel syndrome (IBS), are defined by more or less specific symptoms and the absence of structural or biochemical abnormalities that cause these symptoms. This concept is now considered to be outdated; if appropriate tests are applied, structural or biochemical abnormalities that explain or cause the symptoms may be found in many patients. Another feature of FGID are the highly prevalent psychiatric comorbidities, such as depression and anxiety...
February 8, 2018: Digestive Diseases
https://www.readbyqxmd.com/read/29420700/the-role-of-sex-gender-health-factors-and-job-context-in-workplace-accommodation-use-among-men-and-women-with-arthritis
#13
Monique A M Gignac, Selahadin Ibrahim, Peter M Smith, Vicki Kristman, Dorcas E Beaton, Cameron A Mustard
Background: With the aging of populations in many countries, workers are expected to remain employed longer but may struggle with the onset of common, chronic conditions like arthritis. To date, few studies have examined workplace policies and practices that could help accommodate individuals with arthritis, and fewer still have used a sex and gender-based approach to explore similarities and differences between women and men. Objectives: This study compared the health and work contexts of workers aged ≥50 years to better understand similarities and differences between women and men in accommodation availability, need, use, and unmet needs...
February 6, 2018: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/29420604/opioid-utilization-among-pediatric-patients-treated-for-newly-diagnosed-acute-myeloid-leukemia
#14
Kelly D Getz, Tamara P Miller, Alix E Seif, Yimei Li, Yuan-Shung V Huang, Brian T Fisher, Richard Aplenc
PURPOSE: A cohort of pediatric patients with AML treated at hospitals contributing to the Pediatric Health Information System was used to evaluate differences in opioid utilization by sex, age, race, and insurance. METHODS: Billing data were used to compute the prevalence of opioid exposure and to quantify rates of utilization among those exposed to opioids as days of use per 1000 inpatient days. Multivariable regressions were used to compare opioid prevalence, and rates of utilization among those exposed...
2018: PloS One
https://www.readbyqxmd.com/read/29420154/hip-position-and-sex-differences-in-motor-unit-firing-patterns-of-the-vastus-medialis-and-vastus-medialis-oblique-in-healthy-individuals
#15
Yi-Ling Peng, Matthew S Tenan, Lisa Griffin
Weakness of the vastus medialis oblique (VMO) has been proposed to explain the high prevalence of knee pain in females. Clinicians commonly use exercises in an attempt to preferentially activate the VMO. Recently, our group found evidence to support clinical theory that the VMO is neurologically distinct from the vastus medialis (VM). However, the ability to voluntarily activate these muscle sub-sections is still disputed. The aim of this study was to determine if VM and VMO activation varies between sexes and if control of the two muscles is different between rehabilitation exercises...
February 8, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29417694/inferring-distinct-mechanisms-in-the-absence-of-subjective-differences-placebo-and-centrally-acting-analgesic-underlie-unique-brain-adaptations
#16
Pascal Tétreault, Marwan N Baliki, Alexis T Baria, William R Bauer, Thomas J Schnitzer, A Vania Apkarian
Development and maintenance of chronic pain is associated with structural and functional brain reorganization. However, few studies have explored the impact of drug treatments on such changes. The extent to which long-term analgesia is related to brain adaptations and its effects on the reversibility of brain reorganization remain unclear. In a randomized placebo-controlled clinical trial, we contrasted pain relief (3-month treatment period), and anatomical (gray matter density [GMD], assessed by voxel-based morphometry) and functional connectivity (resting state fMRI nodal degree count [DC]) adaptations, in 39 knee osteoarthritis (OA) patients (22 females), randomized to duloxetine (DLX, 60 mg once daily) or placebo...
February 7, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29414033/associations-of-inflammation-with-symptom-burden-in-patients-with-acute-myeloid-leukemia
#17
Tamara E Lacourt, Annemieke Kavelaars, Jessica R Galloway-Peña, Pranoti V Sahasrabhojane, Nina D Shah, Andrew Futreal, Dimitrios P Kontoyiannis, Samuel A Shelburne, Cobi J Heijnen
The aim of the study was to assess the association inflammation with symptom burden in patients with acute myeloid leukemia (AML), assessed before and during remission induction chemotherapy (IC). Patients with AML (n = 95) were followed from baseline (before IC) to the third week of IC for severity of self-reported somatic symptoms (assessed with the MD Anderson Symptom Inventory) and plasma levels of 13 inflammation-related biomarkers (n = 64). A composite symptom burden severity score was computed as the average score of the six most severe somatic symptoms i...
February 3, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29410576/resolution-of-temporomandibular-joint-dysfunction-tmjd-by-correcting-a-lateral-head-translation-posture-following-previous-failed-traditional-chiropractic-therapy-a-cbp%C3%A2-case-report
#18
Jason O Jaeger, Paul A Oakley, Robert R Moore, Edward P Ruggeroli, Deed E Harrison
[Purpose] To present the case of the resolution of right temporomandibular joint dysfunction (TMJD) following the correction of a right lateral head translation posture. [Subject and Methods] A 24 year old female reported facial pain and jaw clicking in the right TMJ. Radiography revealed a 19 mm right head (shift) translation posture. TMJ vibration analysis showed characteristic abnormalities for the right TMJ. The patient was treated with CBP® technique mirror image® left sided exercises, and traction methods as well as spinal manipulative therapy (SMT)...
January 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29409552/dying-for-the-group-towards-a-general-theory-of-extreme-self-sacrifice
#19
Harvey Whitehouse
Whether upheld as heroic or reviled as terrorism, throughout history people have been willing to lay down their lives for the sake of their groups. Why? Previous theories of extreme self-sacrifice have highlighted a range of seemingly disparate factors such as collective identity, outgroup hostility, and kin psychology. This paper attempts to integrate many of these factors into a single overarching theory based on several decades of collaborative research with a range of special populations, from tribes in Papua New Guinea to Libyan insurgents, and from Muslim fundamentalists in Indonesia to Brazilian football hooligans...
February 7, 2018: Behavioral and Brain Sciences
https://www.readbyqxmd.com/read/29408960/helping-your-partner-with-chronic-pain-the-importance-of-helping-motivation-received-social-support-and-its-timeliness
#20
Sara Kindt, Maarten Vansteenkiste, Haeike Josephy, Sonia F Bernardes, Liesbet Goubert
Objective: Like all intentional acts, social support provision varies with respect to its underlying motives. Greater autonomous or volitional motives (e.g., enjoyment, full commitment) to help individuals with chronic pain (ICPs) are associated with greater well-being benefits for the latter, as indexed by improved satisfaction of their psychological needs for autonomy, competence, and relatedness. The present study investigates the processes explaining why partners' autonomous or volitional helping motivation yields these benefits...
February 2, 2018: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
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