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https://www.readbyqxmd.com/read/29778745/phytohormone-abscisic-acid-elicits-antinociceptive-effects-in-rats-through-the-activation-of-opioid-and-peroxisome-proliferator-activated-receptors-%C3%AE-%C3%AE
#1
Mahtab Mollashahi, Mehdi Abbasnejad, Saeed Esmaeili-Mahani
The phytohormone abscisic acid exists in animal tissues particularly in the brain. However, its neurophysiological effects have not yet been fully clarified. This study was designed to evaluate the possible antinociceptive effects of abscisic acid on animal models of pain and determine its possible signaling mechanism. Tail-flick, hot-plate and formalin tests were used to assess the nociceptive threshold. All experiments were carried out on male Wistar rats. To determine the role of Peroxisome proliferator-activated receptor β/δ (PPARβ/δ) and opioid receptors on the induction of abscisic acid antinociception, specific antagonists were injected 15min before abscisic acid...
May 17, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29777819/7-tesla-magnetic-resonance-imaging-of-caudal-anterior-cingulate-and-posterior-cingulate-cortex-atrophy-in-patients-with-trigeminal-neuralgia
#2
Hyeong Cheol Moon, Chan-A Park, Yeong-Jae Jeon, Soon Tae You, Hyun Man Baek, Youn Joo Lee, Chul Beom Cho, Chae Joon Cheong, Young Seok Park
The cingulate cortex (CC) is a brain region that plays a key role in pain processing, but CC abnormalities are not unclear in patients with trigeminal neuralgia (TN). The purpose of this study was to determine the central causal mechanisms of TN and the surrounding brain structure in healthy controls and patients with TN using 7 Tesla (T) magnetic resonance imaging (MRI). Whole-brain parcellation in gray matter volume and thickness was assessed in 15 patients with TN and 16 healthy controls matched for sex, age, and regional variability using T1-weighted imaging...
May 16, 2018: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29777732/antinociceptive-effect-of-tadalafil-in-various-pain-models-involvement-of-opioid-receptors-and-nitric-oxide-cyclic-gmp-pathways
#3
Mohammad M Mehanna, Souraya Domiati, Hania Nakkash Chmaisse, Ahmed El Mallah
Nitric oxide has been proven to play an important role in nociception, accordingly, its promoters, phosphodiesterase inhibitors have been investigated as pain response modulators. Aiming to evaluate the central effect of tadalafil, a phosphodiesterase 5 inhibitor, and to determine its EC50, tail flick and hot plate tests were utilized. On the other hand, its nociceptive peripheral analgesic effect was assessed through acetic-acid induced writhing model. Formalin test was used to appraise both non-inflammatory and inflammatory pain responses...
May 16, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29776452/work-related-musculoskeletal-disorders-among-registered-general-nurses-a-case-of-a-large-central-hospital-in-harare-zimbabwe
#4
M Chiwaridzo, V Makotore, J M Dambi, N Munambah, M Mhlanga
OBJECTIVE: Worldwide, work-related musculoskeletal disorders (WMSDs) are a common cause of morbidity affecting occupational individuals such as health-care professionals. However, nothing is known about WMSDs in hospital nurses in Zimbabwe. This study was conducted to provide cross-sectional evidence of the 12-month prevalence, consequences and factors associated with WMSDs among 208 nurses at Parirenyatwa Group of Hospitals (PGH). RESULTS: The response rate for the study was 55...
May 18, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29776381/wnt-signaling-in-multiple-myeloma-a-central-player-in-disease-with-therapeutic-potential
#5
REVIEW
Ingrid Spaan, Reinier A Raymakers, Anja van de Stolpe, Victor Peperzak
Multiple myeloma is the second most frequent hematological malignancy in the western world and remains incurable, predominantly due to acquired drug resistance and disease relapse. The highly conserved Wnt signal transduction pathway, which plays a key role in regulating cellular processes of proliferation, differentiation, migration, and stem cell self-renewal, is associated with multiple aspects of disease. Bone homeostasis is severely disturbed by Wnt antagonists that are secreted by the malignant plasma cells in the bone marrow...
May 18, 2018: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/29775734/defining-the-osteoarthritis-patient-back-to-the-future
#6
REVIEW
Geoffrey P Dobson, Hayley L Letson, Andrea Grant, Peter McEwen, Kaushik Hazratwala, Matthew Wilkinson, Jodie L Morris
The history of osteoarthritis (OA) is important because it can help broaden our perspective on past and present controversies. The naming of OA, beginning with Heberden's nodes, is itself a fascinating story. According to Albert Hoffa, R. Llewellyn Jones and Archibald Edward Garrod, the name OA was introduced in the mid-19th century by surgeon Richard von Volkmann who distinguished it from rheumatoid arthritis and gout. Others preferred the terms 'chronical rheumatism', 'senile arthritis', 'hypertrophic arthritis' or 'arthritis deformans'...
May 15, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29774557/diabetes-induced-microvascular-complications-at-the-level-of-the-spinal-cord-a-contributing-factor-in-diabetic-neuropathic-pain
#7
N Ved, M E Da Vitoria Lobo, S M Bestall, C L Vidueira, N Beazley-Long, K Ballmer-Hofer, M Hirashima, D O Bates, L F Donaldson, R P Hulse
Abnormalities of neurovascular interactions within the central nervous system of diabetic patients is associated with the onset of many neurological disease states. However, to date, the link between the neurovascular network within the spinal cord and regulation of nociception has not been investigated despite neuropathic pain being common in diabetes. We hypothesised that hyperglycaemia-induced endothelial degeneration in the spinal cord, due to suppression of VEGF-A/VEGFR2 signalling, induces diabetic neuropathic pain...
May 17, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29774244/classification-and-characterisation-of-brain-network-changes-in-chronic-back-pain-a-multicenter-study
#8
Hiroaki Mano, Gopal Kotecha, Kenji Leibnitz, Takashi Matsubara, Aya Nakae, Nicholas Shenker, Masahiko Shibata, Valerie Voon, Wako Yoshida, Michael Lee, Toshio Yanagida, Mitsuo Kawato, Maria Joao Rosa, Ben Seymour
Background. Chronic pain is a common, often disabling condition thought to involve a combination of peripheral and central neurobiological factors. However, the extent and nature of changes in the brain is poorly understood. Methods. We investigated brain network architecture using resting-state fMRI data in chronic back pain patients in the UK and Japan (41 patients, 56 controls), as well as open data from USA. We applied machine learning and deep learning (conditional variational autoencoder architecture) methods to explore classification of patients/controls based on network connectivity...
2018: Wellcome Open Research
https://www.readbyqxmd.com/read/29773355/pain-assessment-and-management-by-nurses-in-a-geriatric-setting-discrepancies-between-guidelines-and-documented-practice
#9
Irit Shahar, Gad Mendelson, Shlomit Gerbi, Merav Ben Natan
Pain is a common subjective symptom among older adults in general and among older adult residents in long-term geriatric facilities in particular. Pain diminishes older adults' quality of life and may impair their ability to recover from various illnesses. Therefore, the Israeli Ministry of Health has issued guidelines on effectively assessing and treating pain in this population. To examine discrepancies between the Ministry of Health's pain assessment guidelines and documented practice by nursing staff at a long-term geriatric care facility and whether these discrepancies correlate to characteristics of the nurses, the wards, and the patients' characteristics...
May 14, 2018: Pain Management Nursing: Official Journal of the American Society of Pain Management Nurses
https://www.readbyqxmd.com/read/29773191/anti-inflammatory-and-antinociceptive-effects-of-2-2-dipyridyl-diselenide-through-reduction-of-inducible-nitric-oxide-synthase-nuclear-factor-kappa-b-and-c-jun-n-terminal-kinase-phosphorylation-levels-in-the-mouse-spinal-cord
#10
Suzan Gonçalves Rosa, César Augusto Brüning, Ana Paula Pesarico, Ana Cristina Guerra de Souza, Cristina Wayne Nogueira
Appropriate treatment of pain requires analgesics and anti-inflammatory drugs generally associated with undesirable side effects and not fully effective in a significant proportion of patients. Organoselenium compounds elicit a plenty of pharmacological effects in different animal models. Among these compounds, the 2,2`-dipyridyl diselenide (DPD) has a potent antioxidant effect and low toxicity. In this way, the aim of this study was to investigate the possible DPD antinociceptive effect and its mechanism of action, as well as the safety of the compound...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29772245/ape1-ref-1-redox-function-contributes-to-inflammatory-pain-sensitization
#11
Amira Zaky, Rabia Bouali-Benazzouz, Alexandre Favereaux, Gianluca Tell, Marc Landry
Inflammatory pain is a complex and multifactorial disorder. Apurinic/apyrimidinic endonuclease 1 (APE1), also called Redox Factor-1 (Ref-1), is constitutively expressed in the central nervous system and regulates various cellular functions including oxidative stress. In the present study, we investigated APE1 modulation and associated pain behavior changes in the complete Freund's adjuvant (CFA) model of inflammatory pain in rats. In addition we tested the anti-inflammatory effects of E3330, a selective inhibitor of APE1-redox activity, in CFA pain condition...
May 14, 2018: Experimental Neurology
https://www.readbyqxmd.com/read/29771804/preemptive-analgesia-decreases-pain-following-anorectal-surgery-a-prospective-randomized-double-blinded-placebo-controlled-trial
#12
Justin T Van Backer, Matthew R Jordan, Danielle T Leahy, Jesse S Moore, Peter Callas, Timothy Dominick, Peter A Cataldo
BACKGROUND: Postoperative pain is a frequent cause for delayed discharge following outpatient procedures, including anorectal surgery. Both central and peripheral pain receptor sensitization are thought to contribute to postoperative pain. Blocking these receptors and preempting sensitization prevents hyperalgesia leading to lower pain medication requirements. Studies in the orthopedic, urologic, and gynecologic literature support this practice, but the use of preemptive analgesia in anorectal surgery is understudied...
May 15, 2018: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/29771731/effect-of-intravenous-dexmedetomidine-during-general-anesthesia-on-acute-postoperative-pain-in-adults-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#13
Xiuqin Wang, Naifu Liu, Jinlong Chen, Zan Xu, Fumei Wang, Chuan Ding
BACKGROUND: Dexmedetomidine has been shown to have an analgesic effect. However, no consensus was reached in previous studies. METHODS: Electronic databases such as PubMed, Embase, and Cochrane Central were searched for relevant randomized controlled trials (RCTs). The relative risk (RR) and weighted mean difference (WMD) were used to analyze the outcomes. Random-effects model was used for meta-analysis. RESULTS: Compared to the normal saline group, patients using dexmedetomidine showed a significantly decreased pain intensity within 6 hours (WMD=-0...
May 16, 2018: Clinical Journal of Pain
https://www.readbyqxmd.com/read/29771101/-evidence-of-lack-of-concordance-between-hemodialysis-patients-and-nurses-on-the-presence-and-severity-of-symptoms
#14
Christine Cohen, Matteo Antonini, Philippe Delmas
Hemodialysis patients represent a fragile population experiencing many symptoms (e.g., pain, fatigue) that impact their quality of life. The presence and severity of these symptoms are significantly underestimated by health professionals. The purpose of this study is to describe and compare the symptoms perceived by hemodialysis patients versus those detected by nurses and to discuss the possible causes of the disparity observed. A total of 123 patients and 70 nurses working in six hemodialysis centers were included in this study...
March 2018: Recherche en Soins Infirmiers
https://www.readbyqxmd.com/read/29770432/automated-mandatory-bolus-versus-basal-infusion-for-maintenance-of-epidural-analgesia-in-labour
#15
REVIEW
Ban Leong Sng, Yanzhi Zeng, Nurun Nisa A de Souza, Wan Ling Leong, Ting Ting Oh, Fahad Javaid Siddiqui, Pryseley N Assam, Nian-Lin R Han, Edwin Sy Chan, Alex T Sia
BACKGROUND: Childbirth may cause the most severe pain some women experience in their lifetime. Epidural analgesia is an effective form of pain relief during labour and is considered to be the reference standard. Traditionally epidural analgesia has been delivered as a continuous infusion via a catheter in the epidural space, with or without the ability for the patient to supplement the analgesia received by activating a programmable pump to deliver additional top-up doses, known as patient-controlled epidural analgesia (PCEA)...
May 17, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29768324/intravenous-glucocorticoid-for-pain-control-after-spinal-fusion-a-meta-analysis-of-randomized-controlled-trials
#16
Feng Wang, Keqin Shi, Yu Jiang, Zhengjie Yang, Gang Chen, Kerong Song
OBJECTIVE: Postoperative pain was a common symptom after spinal surgery. This meta-analysis aimed to assess whether intravenous glucocorticoids has a beneficial role in reducing pain in patients following spinal fusion. METHODS: We systematically searched PubMed, Embase, the Cochrane Central Register of Controlled Trials, Web of Science, and Google databases, from inception to March 2, 2018. Randomized controlled trials (RCTs) that comparing intravenous glucocorticoids with control treatment for spinal fusion were included...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29767995/structure-activity-relationships-and-therapeutic-potentials-of-5-ht7-receptor-ligands-an-update
#17
Maria N Modica, Enza Lacivita, Sebastiano Intagliata, Loredana Salerno, Giuseppe Romeo, Valeria Pittala, Marcello Leopoldo
Serotonin 5-HT7 receptor (5-HT7R) has been the subject of intense research efforts because of its presence in brain areas such as hippocampus, hypothalamus, and cortex. Preclinical data link the 5-HT7R to a variety of central nervous system processes such as regulation of circadian rhythms, mood, cognitions, pain processing, and mechanisms of addiction. 5-HT7R blockade has antidepressant effects and may ameliorate cognitive deficits associated with schizophrenia. 5-HT7R has been recently shown to modulate neuronal morphology, excitability, and plasticity, thus contributing to shape brain networks during development and to remodel neuronal wiring in the mature brain...
May 16, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29767648/antinociception-induced-by-copper-salt-revisited-interaction-with-ketamine-in-formalin-induced-intraplantar-and-orofacial-pain-in-mice
#18
Victoria Cazanga, Alejandro Hernandez, Bernardo Morales, Teresa Pelissier, Luis Constandil
AIMS: To evaluate in mice the antinociceptive effect of copper in spinal and trigeminal nociceptive pathways by using the intraplantar and orofacial formalin tests, respectively, and to examine whether this effect may interact synergistically with ketamine-induced antinociception. METHODS: Nociceptive behaviors (licking/biting of the formalin-injected limb and rubbing/scratching of the formalin-injected orofacial area) in male mice were evaluated during a 45-minute observation period post-formalin injection...
May 15, 2018: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29766046/deletion-of-tsc2-in-nociceptors-reduces-target-innervation-ion-channel-expression-and-sensitivity-to-heat
#19
Dan Carlin, Judith P Golden, Amit Mogha, Vijay K Samineni, Kelly R Monk, Robert W Gereau, Valeria Cavalli
The mechanistic target of rapamycin complex 1 (mTORC1) is known to regulate cellular growth pathways, and its genetic activation is sufficient to enhance regenerative axon growth following injury to the central or peripheral nervous systems. However, excess mTORC1 activation may promote innervation defects, and mTORC1 activity mediates injury-induced hypersensitivity, reducing enthusiasm for the pathway as a therapeutic target. While mTORC1 activity is required for full expression of some pain modalities, the effects of pathway activation on nociceptor phenotypes and sensory behaviors are currently unknown...
March 2018: ENeuro
https://www.readbyqxmd.com/read/29764307/effectiveness-of-hydrodilatation-in-adhesive-capsulitis-of-shoulder-a-systematic-review-and-meta-analysis
#20
M Saltychev, K Laimi, P Virolainen, M Fredericson
BACKGROUND AND AIMS: Even though hydrodilatation has been used for 50 years, the evidence on its effectiveness is not clear. Only one earlier review has strictly focused on this treatment method. The aims of this study are to evaluate the evidence on the effectiveness of hydrodilatation in treatment of adhesive capsulitis and, if appropriate, to assess the correlation between the effects of this procedure and the amount of fluid injected. MATERIALS AND METHODS: A literature search on MEDLINE, Embase, Scopus, Cochrane Central, Web of Science, and CINAHL databases was done; random-effects meta-analysis and meta-regression were employed; and cost-effectiveness and safeness analyses were left outside the scope of the review...
May 1, 2018: Scandinavian Journal of Surgery: SJS
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