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https://www.readbyqxmd.com/read/28549109/il-18-cleavage-triggers-cardiac-inflammation-and-fibrosis-upon-%C3%AE-adrenergic-insult
#1
Han Xiao, Hao Li, Jing-Jing Wang, Jian-Shu Zhang, Jing Shen, Xiang-Bo An, Cong-Cong Zhang, Ji-Min Wu, Yao Song, Xin-Yu Wang, Hai-Yi Yu, Xiang-Ning Deng, Zi-Jian Li, Ming Xu, Zhi-Zhen Lu, Jie Du, Wei Gao, Ai-Hua Zhang, Yue Feng, You-Yi Zhang
Aims: Rapid over-activation of β-adrenergic receptor (β-AR) upon stress leads to cardiac inflammation, a prevailing factor that underlies heart injury. However, mechanisms by which acute β-AR stimulation induce cardiac inflammation still remain unknown. Here, we set out to identify the crucial role of inflammasome/interleukin (IL)-18 in initiating and maintaining cardiac inflammatory cascades upon β-AR insult. Methods and results: Male C57BL/6 mice were injected with a single dose of β-AR agonist, isoproterenol (ISO, 5 mg/kg body weight) or saline subcutaneously...
May 26, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28548225/single-and-combined-effects-of-delta-9-tetrahydrocannabinol-and-cannabidiol-in-a-mouse-model-of-chemotherapy-induced-neuropathic-pain
#2
Kirsten M King, Alyssa M Myers, Ariele J Soroka-Monzo, Ronald F Tuma, Ronald J Tallarida, Ellen A Walker, Sara Jane Ward
BACKGROUND AND PURPOSE: It has been suggested that the non-psychoactive phytocannabinoid cannabidiol (CBD) can impact the pharmacological effects of delta-9-tetrahydrocannabinol (THC). We tested the hypothesis that CBD and THC would significantly mitigate mechanical sensitivity in a mouse model of paclitaxel-induced neuropathic pain, and that CBD+THC combinations would produce synergistic effects. We also tested the hypothesis that CBD would attenuate oxaliplatin- and vincristine- induced mechanical sensitivity...
May 26, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28548108/drugging-the-pain-epigenome
#3
REVIEW
Ellen Niederberger, Eduard Resch, Michael J Parnham, Gerd Geisslinger
More than 20% of adults worldwide experience different types of chronic pain, which are frequently associated with several comorbidities and a decrease in quality of life. Several approved painkillers are available, but current analgesics are often hampered by insufficient efficacy and/or severe adverse effects. Consequently, novel strategies for safe, highly efficacious treatments are highly desirable, particularly for chronic pain. Epigenetic mechanisms such as DNA methylation, histone modifications and microRNAs (miRNAs) strongly affect the regulation of gene expression, potentially for long periods over years or even generations, and have been associated with pathophysiological pain...
May 26, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28547032/car8-dorsal-root-ganglion-expression-and-genetic-regulation-of-analgesic-responses-are-associated-with-a-cis-eqtl-in-mice
#4
Roy C Levitt, Gerald Y Zhuang, Yuan Kang, Diana M Erasso, Udita Upadhyay, Mehtap Ozdemir, Eugene S Fu, Konstantinos D Sarantopoulos, Shad B Smith, William Maixner, Luda Diatchenko, Eden R Martin, Tim Wiltshire
Carbonic anhydrase-8 (Car8 mouse gene symbol) is devoid of enzymatic activity, but instead functions as an allosteric inhibitor of inositol trisphosphate receptor-1 (ITPR1) to regulate this intracellular calcium release channel important in synaptic functions and neuronal excitability. Causative mutations in ITPR1 and carbonic anhydrase-8 in mice and humans are associated with certain subtypes of spinal cerebellar ataxia (SCA). SCA mice are genetically deficient in dorsal root ganglia (DRG) Car8 expression and display mechanical and thermal hypersensitivity and susceptibility to subacute and chronic inflammatory pain behaviors...
May 25, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28546875/spinal-cord-infarct-caused-from-suspected-fibrocartilaginous-embolism
#5
Ayham M Alkhachroum, Danielle Weiss, Alan Lerner, Michael A De Georgia
INTRODUCTION: We report a case of spinal cord infarct as a result of suspected fibrocartilaginous embolism (FCE). CASE PRESENTATION: A 23-year-old man presented with sudden onset cervical and upper back pain followed by progressive weakness in his extremities after throwing a baseball. History, neurologic examination and spinal cord imaging were consistent with spinal cord infarct. We believe the cause was from FCE. DISCUSSION: Though rare, physicians should be familiar with this diagnosis and the proposed mechanisms...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28546874/acute-paraparesis-and-sensory-loss-following-intravenous-corticosteroid-administration-in-a-case-of-longitudinally-extensive-transverse-myelitis-caused-by-spinal-dural-arteriovenous-fistula-case-report-and-review-of-literature
#6
Michael A DiSano, Russell Cerejo, MaryAnn Mays
INTRODUCTION: The underlying causes of longitudinally extensive transverse myelitis (LETM) are broad and include inflammatory processes, compression and spinal dural arteriovenous fistula (SDAVF). Presenting symptoms of SDAVF are nonspecific and often go misdiagnosed. Acute clinical deterioration from SDAVF has been described following exertion or valsalva. However, deterioration has been recently recognized following steroid administration and may contribute to increased morbidity. CASE PRESENTATION: We describe a 63-year-old woman with a 2-year history of intermittent lower extremity numbness and back pain, lumbar stenosis, who presented with subacute worsening of symptoms following a course of oral steroids for an upper respiratory infection...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28546770/reduced-gabaergic-neuronal-activity-in-zona-incerta-causes-neuropathic-pain-in-a-rat-sciatic-nerve-chronic-constriction-injury-model
#7
Hyeong Cheol Moon, Young Seok Park
PURPOSE: The zona incerta (ZI) is below the ventral tier of the thalamus and has a strong influence selectively in higher-order thalamic relays. Although neuropathic pain has been suggested to result from reduced gamma-aminobutyric acid (GABA) and GABAergic signaling in the ZI, the mechanisms remain unclear. Here, the role of GABA and GABAergic signaling was investigated in the ZI in neuropathic pain using sciatic nerve chronic constriction injury (CCI) rats. MATERIALS AND METHODS: Single-unit neuronal activity was recorded, and microdialysis was performed in the ZI of CCI rats and sham-treated rats in vivo...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28546122/cauda-equina-syndrome-due-to-dural-sac-shift-with-engorgement-of-the-epidural-venous-plexus-rare-complication-after-lumbar-microdiscectomy
#8
Yoshinori Maki, Motohiro Takayama, Hideki Hayashi, Yohei Yokoyama, Yuji Agawa
BACKGROUND: Several postoperative complications related to lumbar microdisectomy have been reported, including cauda equina syndrome. However, to the best of our knowledge, postoperative cauda equina syndrome resulting from dural sac shift with engorgement of the epidural venous plexus is yet to be reported. CASE DESCRIPTION: A 71-year-old male patient was referred to our hospital with a chief complaint of pain and sensory disturbance due to the lumbar disc herniation of L5-S1...
May 22, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28545586/disulfide-high-mobility-group-box-1-causes-bladder-pain-through-bladder-toll-like-receptor-4
#9
Fei Ma, Dimitrios E Kouzoukas, Katherine L Meyer-Siegler, Karin N Westlund, David E Hunt, Pedro L Vera
BACKGROUND: Bladder pain is a prominent symptom in several urological conditions (e.g. infection, painful bladder syndrome/interstitial cystitis, cancer). Understanding the mechanism of bladder pain is important, particularly when the pain is not accompanied by bladder pathology. Stimulation of protease activated receptor 4 (PAR4) in the urothelium results in bladder pain through release of urothelial high mobility group box-1 (HMGB1). HGMB1 has two functionally active redox states (disulfide and all-thiol) and it is not known which form elicits bladder pain...
May 25, 2017: BMC Physiology
https://www.readbyqxmd.com/read/28545535/electronic-audit-and-feedback-intervention-with-action-implementation-toolbox-to-improve-pain-management-in-intensive-care-protocol-for-a-laboratory-experiment-and-cluster-randomised-trial
#10
Wouter T Gude, Marie-José Roos-Blom, Sabine N van der Veer, Evert de Jonge, Niels Peek, Dave A Dongelmans, Nicolette F de Keizer
BACKGROUND: Audit and feedback is often used as a strategy to improve quality of care, however, its effects are variable and often marginal. In order to learn how to design and deliver effective feedback, we need to understand their mechanisms of action. This theory-informed study will investigate how electronic audit and feedback affects improvement intentions (i.e. information-intention gap), and whether an action implementation toolbox with suggested actions and materials helps translating those intentions into action (i...
May 25, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/28545508/open-label-versus-double-blind-placebo-treatment-in-irritable-bowel-syndrome-study-protocol-for-a-randomized-controlled-trial
#11
Sarah Ballou, Ted J Kaptchuk, William Hirsch, Judy Nee, Johanna Iturrino, Kathryn T Hall, John M Kelley, Vivian Cheng, Irving Kirsch, Eric Jacobson, Lisa Conboy, Anthony Lembo, Roger B Davis
BACKGROUND: Placebo medications, by definition, are composed of inactive ingredients that have no physiological effect on symptoms. Nonetheless, administration of placebo in randomized controlled trials (RCTs) and in clinical settings has been demonstrated to have significant impact on many physical and psychological complaints. Until recently, conventional wisdom has suggested that patients must believe that placebo pills actually contain (or, at least, might possibly contain) active medication in order to elicit a response to placebo...
May 25, 2017: Trials
https://www.readbyqxmd.com/read/28544432/are-10-khz-stimulation-and-burst-stimulation-fundamentally-the-same
#12
REVIEW
Dirk De Ridder, Sanjaya Perera, Sven Vanneste
BACKGROUND: Spinal cord stimulation (SCS) is routinely used for intractable pain syndromes. For SCS to be efficacious the painful area needs to be covered by SCS induced paresthesia symptoms. Recently, novel stimulation designs have been developed for spinal cord stimulation (SCS) that are superior to classical spinal cord stimulation and exert their effects without the mandatory paresthesia. Two such stimulation designs are burst stimulation and 10 kHz stimulation. OBJECTIVE: Whereas the mechanism of action of burst SCS has been partly elucidated, in that it modulates the medial pain pathway in contrast to tonic stimulation, the mechanism of action of 10 kHz SCS is still enigmatic...
May 25, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28544329/dissolving-microneedle-arrays-for-transdermal-delivery-of-amphiphilic-vaccines
#13
Myunggi An, Haipeng Liu
Amphiphilic vaccine based on lipid-polymer conjugates is a new type of vaccine capable of self-delivering to the immune system. When injected subcutaneously, amphiphilic vaccines efficiently target antigen presenting cells in the lymph nodes (LNs) via a unique albumin-mediated transport and uptake mechanism and induce potent humoral and cellular immune responses. However, whether this new type of vaccine can be administrated via a safe, convenient microneedle-based transdermal approach remains unstudied. For such skin barrier-disruption systems, a simple application of microneedle arrays (MNs) is desired to disrupt the stratum corneum, and for rapid and pain-free self-administration of vaccines into the skin, the anatomic place permeates with an intricate mesh of lymphatic vessels draining to LNs...
May 19, 2017: Small
https://www.readbyqxmd.com/read/28543518/green-discolouration-of-urine-following-propofol-infusion-in-a-dog
#14
D Flaherty, A Auckburally
A three-year-old, female neutered Weimaraner was presented with a history of neck pain and tetraparesis. MRI revealed an extradural mass at the level of C3 vertebra, which was thought to be a spinal abscess, and the dog was scheduled for surgical exploration the following morning. Overnight the dog developed an exaggerated ventilatory pattern, with paradoxical inward movement of the thorax on inspiration. Arterial blood gas analysis revealed respiratory acidosis and ventilator support was initiated to prevent excessive respiratory fatigue...
May 25, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28543369/directing-clinical-care-using-lower-extremity-biomechanics-in-patients-with-ankle-osteoarthritis-and-ankle-arthroplasty
#15
REVIEW
Robin Queen
Ankle osteoarthritis is a debilitating disease with approximately 50,000 new cases per year leading to skeletal deformity, severe and recurrent pain, cartilage breakdown, and gait dysfunction limiting patient mobility and well-being. Although many treatments (total ankle arthroplasty (TAA), ankle fusion (arthrodesis), and ankle distraction arthroplasty) relieve pain, it is not clear that these procedures significantly improve patient mobility. The goal of the research presented here is to summarize what is presently known about lower extremity gait mechanics and outcomes and to quantify the impact of ankle osteoarthritis and TAA have on these measures using an explicitly holistic and mechanistic approach...
May 19, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28542541/varicella-zoster-virus-glycoprotein-c-increases-chemokine-mediated-leukocyte-migration
#16
Víctor González-Motos, Carina Jürgens, Birgit Ritter, Kai A Kropp, Verónica Durán, Olav Larsen, Anne Binz, Werner J D Ouwendijk, Tihana Lenac Rovis, Stipan Jonjic, Georges M G M Verjans, Beate Sodeik, Thomas Krey, Rudolf Bauerfeind, Thomas F Schulz, Benedikt B Kaufer, Ulrich Kalinke, Amanda E I Proudfoot, Mette M Rosenkilde, Abel Viejo-Borbolla
Varicella zoster virus (VZV) is a highly prevalent human pathogen that establishes latency in neurons of the peripheral nervous system. Primary infection causes varicella whereas reactivation results in zoster, which is often followed by chronic pain in adults. Following infection of epithelial cells in the respiratory tract, VZV spreads within the host by hijacking leukocytes, including T cells, in the tonsils and other regional lymph nodes, and modifying their activity. In spite of its importance in pathogenesis, the mechanism of dissemination remains poorly understood...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28542024/omega-6-omega-3-pufa-ratio-pain-functioning-and-distress-in-adults-with-knee-pain
#17
Kimberly T Sibille, Christopher King, Timothy J Garrett, Toni L Glover, Hang Zhang, Huaihou Chen, Divya Reddy, Burel R Goodin, Adriana Sotolongo, Megan E Petrov, Yenisel Cruz-Almeida, Matthew Herbert, Emily J Bartley, Jeffrey C Edberg, Roland Staud, David T Redden, Laurence A Bradley, Roger B Fillingim
OBJECTIVES: Osteoarthritis (OA) is associated with inflammation, chronic pain, functional limitations, and psychosocial distress. High Omega-3 (n-3) polyunsaturated fatty acids (PUFAs) are associated with lower levels of inflammatory mediators, anti-nociception, and adaptive cognitive/emotional functioning. High Omega-6 (n-6) PUFAs are associated with inflammation, nociception, and psychological distress. While findings related to n-3 supplementation in knee OA are mixed, consideration of the n-6:n-3 ratio and additional outcome measures may provide improved understanding of the potential relevance of these fatty acids in OA...
May 24, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28542002/assessment-of-behavioral-disruption-in-rats-with-abdominal-inflammation-using-visual-cue-titration-and-the-five-choice-serial-reaction-time-task
#18
Thomas J Martin, Tracy J Strassburg, Amanda L Grigg, Susy A Kim, Douglas G Ririe, James C Eisenach
BACKGROUND: Both acute and chronic pain result in a number of behavioral symptoms in patients, including cognitive effects such as decreased attention and working memory. Intraperitoneal administration of dilute lactic acid in rodents has been used to induce abdominal inflammation and produce effects in behavioral assays of both sensory-discriminative and affective pain modalities. METHODS: Intraperitoneal injection of dilute lactic acid was used to study the impact of abdominal inflammation on an operant task requiring sustained visual attention in rats (N = 7 to 15/group) that adapts dynamically to performance ability...
May 25, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28542001/acetaminophen-metabolite-n-acylphenolamine-induces-analgesia-via-transient-receptor-potential-vanilloid-1-receptors-expressed-on-the-primary-afferent-terminals-of-c-fibers-in-the-spinal-dorsal-horn
#19
Nobuko Ohashi, Daisuke Uta, Mika Sasaki, Masayuki Ohashi, Yoshinori Kamiya, Tatsuro Kohno
BACKGROUND: The widely used analgesic acetaminophen is metabolized to N-acylphenolamine, which induces analgesia by acting directly on transient receptor potential vanilloid 1 or cannabinoid 1 receptors in the brain. Although these receptors are also abundant in the spinal cord, no previous studies have reported analgesic effects of acetaminophen or N-acylphenolamine mediated by the spinal cord dorsal horn. We hypothesized that clinical doses of acetaminophen induce analgesia via these spinal mechanisms...
May 25, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28541256/modulation-of-brainstem-activity-and-connectivity-by-respiratory-gated-auricular-vagal-afferent-nerve-stimulation-in-migraine-patients
#20
Ronald G Garcia, Richard L Lin, Jeungchan Lee, Jieun Kim, Riccardo Barbieri, Roberta Sclocco, Ajay D Wasan, Robert R Edwards, Bruce R Rosen, Nouchine Hadjikhani, Vitaly Napadow
Migraine pathophysiology includes altered brainstem excitability, and recent neuromodulatory approaches aimed at controlling migraine episodes have targeted key brainstem relay and modulatory nuclei. In this study, we evaluated the impact of respiratory-gated auricular vagal afferent nerve stimulation (RAVANS), a novel neuromodulatory intervention based on an existing transcutaneous vagus nerve stimulation approach, in the modulation of brainstem activity and connectivity in migraine patients. We applied 3T-functional magnetic resonance imaging with improved in-plane spatial resolution (2...
April 25, 2017: Pain
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