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https://www.readbyqxmd.com/read/28214916/facial-expression-an-under-utilised-tool-for-the-assessment-of-welfare-in-mammals
#1
Kris A Descovich, Jennifer Wathan, Matthew C Leach, Hannah M Buchanan-Smith, Paul Flecknell, David Farningham, Sarah-Jane Vick
Animal welfare is a key issue for industries that use or impact upon animals. The accurate identification of welfare states is particularly relevant to the field of bioscience, where the 3Rs framework encourages refinement of experimental procedures involving animal models. The assessment and improvement of welfare states in animals is reliant on reliable and valid measurement tools. Behavioural measures (activity, attention, posture and vocalisation) are frequently used because they are immediate and non-invasive, however no single indicator can yield a complete picture of the internal state of an animal...
February 8, 2017: ALTEX
https://www.readbyqxmd.com/read/28210904/acute-and-neuropathic-orofacial-antinociceptive-effect-of-eucalyptol
#2
José de Maria de Albuquerque de Melo Júnior, Marina de Barros Mamede Vidal Damasceno, Sacha Aubrey Alves Rodrigues Santos, Talita Matias Barbosa, João Ronielly Campêlo Araújo, Antonio Eufrásio Vieira-Neto, Deysi Viviana Tenazoa Wong, Roberto César Pereira Lima-Júnior, Adriana Rolim Campos
Terpenes have a wide range of pharmacological properties, including antinociceptive action. The anti-inflammatory and antinociceptive effects of eucalyptol are well established. The purpose of this study was to evaluate the antinociceptive effect of eucalyptol on acute and neuropathic orofacial pain in rodent models. Acute orofacial and corneal nociception was induced with formalin, capsaicin, glutamate and hypertonic saline in mice. In another series, animals were pretreated with capsazepine or ruthenium red to evaluate the involvement of TRPV1 receptors in the effect of eucalyptol...
February 16, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28196712/ipomoea-pes-caprae-l-r-br-convolvulaceae-as-a-topical-herbal-medicine-to-relieve-pain-and-inflammation-promising-tool-against-effects-due-to-toxin-skin-contact
#3
Cristiane da Silva Barth, Hugo Guilherme Tolentino de Souza, Lilian W Rocha, Gislaine Francieli da Silva, Mariana Ferreira Dos Anjos, Veronica D'Avila Pastor, Tania Mari Belle Bresolin, Angelica Garcia Couto, José Roberto Santin, Nara Lins Meira Quintão
ETHNOPHARMACOLOGICAL RELEVANCE: Ipomoea pes-caprae is known as bayhops, beach morning glory or goat's foot, and in Brazil as salsa-de-praia. Its leaves are used in worldwide folk medicine for the relief of jellyfish-stings symptoms. The literature only reports the anti-inflammatory and neutralizing effects of a nonpolar plant derived, without validating the popular use or exploring the mechanism of action. AIM OF THE STUDY: This study aimed to evaluate and validate the topical effects of a semisolid containing hydroethanolic extract obtained from the aerial parts of I...
February 11, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28196035/perivascular-stem-cells-diminish-muscle-atrophy-following-massive-rotator-cuff-tears-in-a-small-animal-model
#4
Claire D Eliasberg, Ayelet Dar, Andrew R Jensen, Iain R Murray, Winters R Hardy, Tomasz J Kowalski, Cameron A Garagozlo, Kyle M Natsuhara, Adam Z Khan, Owen J McBride, Peter I Cha, Benjamin V Kelley, Denis Evseenko, Brian T Feeley, David R McAllister, Bruno Péault, Frank A Petrigliano
BACKGROUND: Rotator cuff tears are a common cause of shoulder pain and often necessitate operative repair. Muscle atrophy, fibrosis, and fatty infiltration can develop after rotator cuff tears, which may compromise surgical outcomes. This study investigated the regenerative potential of 2 human adipose-derived progenitor cell lineages in a murine model of massive rotator cuff tears. METHODS: Ninety immunodeficient mice were used (15 groups of 6 mice). Mice were assigned to 1 of 3 surgical procedures: sham, supraspinatus and infraspinatus tendon transection (TT), or TT and denervation via suprascapular nerve transection (TT + DN)...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28195646/ns1209-spd-502-a-novel-selective-ampa-antagonist-for-stroke-neuropathic-pain-or-epilepsy-drug-development-lessons-learned
#5
Jan M Keppel Hesselink
Preclinical Research The selective AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor antagonist, NS1209 (also known as SPD 502) has been explored in several research and development campaigns since its selection as a lead drug candidate in the early 1990s by the Danish biotechnology company, NeuroSearch. The compound was successively tested in animal models of stroke, neuropathic pain and epilepsy. The preclinical data to support development for the treatment of stroke were incomplete, as the compound was administered after the stroke episode, and did not protect subcortical areas of the brain...
February 13, 2017: Drug Development Research
https://www.readbyqxmd.com/read/28194646/nanoemulsion-thermoreversible-pluronic-f127-based-hydrogel-containing-hyptis-pectinata-lamiaceae-leaf-essential-oil-produced-a-lasting-anti-hyperalgesic-effect-in-chronic-noninflammatory-widespread-pain-in-mice
#6
Lucindo J Quintans-Júnior, Renan G Brito, Jullyana S S Quintans, Priscila L Santos, Zaine T Camargo, Péricles A Barreto, Maria F Arrigoni-Blank, Waldecy Lucca-Júnior, Luciana Scotti, Marcus T Scotti, Sandra J Kolker, Kathleen A Sluka
We evaluated if a nanostructured thermoreversible Pluronic F127-based hydrogel incorporated with Hyptis pectinata leaf essential oil (NE-EOH) produces a long-lasting anti-hyperalgesic effect on chronic muscle pain in an animal model. We induced chronic muscle pain by injecting the gastrocnemius with saline injections. Paw and muscle withdrawal thresholds and motor performance were evaluated after treatment and compared with morphine, diazepam, or vehicle. Naloxone and methysergide administration tested the involvement of opioid and serotonin receptors, respectively...
February 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28188357/analgesic-antiallodynic-and-anticonvulsant-activity-of-novel-hybrid-molecules-derived-from-n-benzyl-2-2-5-dioxopyrrolidin-1-yl-propanamide-and-2-2-5-dioxopyrrolidin-1-yl-butanamide-in-animal-models-of-pain-and-epilepsy
#7
Anna Rapacz, Krzysztof Kamiński, Jolanta Obniska, Paulina Koczurkiewicz, Elżbieta Pękala, Barbara Filipek
The purpose of the present study was to examine the analgesic activity of six novel hybrid molecules, which demonstrated in the previous research anticonvulsant activity in the maximal electroshock seizure (MES) and subcutaneous pentylenetetrazole seizure (scPTZ) tests in mice. The antinociceptive properties were estimated in three models of pain in mice-the hot plate test, the formalin test, and in the oxaliplatin-induced neuropathy. Moreover, extended anticonvulsant studies were carried out and the antiseizure activity was investigated in the 6-Hz test...
February 10, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28185645/mu-opioid-receptors-in-gamma-aminobutyric-acidergic-forebrain-neurons-moderate-motivation-for-heroin-and-palatable-food
#8
Pauline Charbogne, Olivier Gardon, Elena Martín-García, Helen L Keyworth, Aya Matsui, Anna E Mechling, Thomas Bienert, Taufiq Nasseef, Anne Robé, Luc Moquin, Emmanuel Darcq, Sami Ben Hamida, Patricia Robledo, Audrey Matifas, Katia Befort, Claire Gavériaux-Ruff, Laura-Adela Harsan, Dominik von Elverfeldt, Jurgen Hennig, Alain Gratton, Ian Kitchen, Alexis Bailey, Veronica A Alvarez, Rafael Maldonado, Brigitte L Kieffer
BACKGROUND: Mu opioid receptors (MORs) are central to pain control, drug reward, and addictive behaviors, but underlying circuit mechanisms have been poorly explored by genetic approaches. Here we investigate the contribution of MORs expressed in gamma-aminobutyric acidergic forebrain neurons to major biological effects of opiates, and also challenge the canonical disinhibition model of opiate reward. METHODS: We used Dlx5/6-mediated recombination to create conditional Oprm1 mice in gamma-aminobutyric acidergic forebrain neurons...
December 26, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28182130/therapeutic-effect-of-epidural-hyaluronic-acid-in-a-rat-model-of-foraminal-stenosis
#9
Francis Sahngun Nahm, Pyung Bok Lee, Ghee Young Choe, Young Jin Lim, Yong Chul Kim
PURPOSE: Since receiving a warning from the US Food and Drug Administration (FDA) about injection of corticosteroids into the epidural space having serious adverse events, we have sought alternative medications for injection at this site. Hyaluronic acid (HA) has anti-adhesive, anti-inflammatory, and lubricating properties, so could potentially be useful for spinal pain. The exact mechanism by which spinal stenosis develops is not fully understood, but is likely to involve inflammation...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28181561/peripheral-sensory-neuron-injury-contributes-to-neuropathic-pain-in-experimental-autoimmune-encephalomyelitis
#10
I-Ching Wang, Chen-Yen Chung, Fang Liao, Chih-Cheng Chen, Cheng-Han Lee
Multiple sclerosis (MS)-induced neuropathic pain deteriorates quality of life in patients but is often refractory to treatment. In experimental autoimmune encephalomyelitis (EAE), a rodent model of MS, animals develop neuropathy and inflammation-induced tissue acidosis, which suggests the involvement of acid-sensing ion channels (ASICs). Also, peripheral neuropathy is reported in MS patients. However, the involvement of the peripheral nervous system (PNS) in MS neuropathic pain remains elusive. This study investigated the contribution of ASICs and peripheral neuropathy in MS-induced neuropathic pain...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28179555/role-of-the-excitability-brake-potassium-current-ikd-in-cold-allodynia-induced-by-chronic-peripheral-nerve-injury
#11
Alejandro González, Gonzalo Ugarte, Carlos Restrepo, Gaspar Herrera, Ricardo Piña, José Antonio Gómez-Sánchez, María Pertusa, Patricio Orio, Rodolfo Madrid
Cold allodynia is a common symptom of neuropathic and inflammatory pain following peripheral nerve injury. The mechanisms underlying this disabling sensory alteration are not entirely understood. In primary somatosensory neurons, cold-sensitivity is mainly determined by a functional counterbalance between cold-activated TRPM8 channels and Shaker-like Kv1.1-1.2 channels underlying the excitability brake current IKD Here we studied the role of IKD in damage-triggered painful hypersensitivity to innocuous cold...
February 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28173831/immunoselected-stro-3-mesenchymal-precursor-cells-reduce-inflammation-and-improve-clinical-outcomes-in-a-large-animal-model-of-monoarthritis
#12
Anwar Abdalmula, Laura M Dooley, Claire Kaufman, Elizabeth A Washington, Jacqueline V House, Barbara A Blacklaws, Peter Ghosh, Silviu Itescu, Simon R Bailey, Wayne G Kimpton
BACKGROUND: The purpose of this study was to investigate the therapeutic efficacy of intravenously administered immunoselected STRO-3 + mesenchymal precursor cells (MPCs) on clinical scores, joint pathology and cytokine production in an ovine model of monoarthritis. METHODS: Monoarthritis was established in 16 adult merino sheep by administration of bovine type II collagen into the left hock joint following initial sensitization to this antigen. After 24 h, sheep were administered either 150 million allogeneic ovine MPCs (n = 8) or saline (n = 8) intravenously (IV)...
February 7, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28167290/albizia-zygia-dc-j-f-macbr-leguminosae-mimosoideae-root-extract-exhibits-anti-nociceptive-and-antipyretic-activities-in-murine-models
#13
Wonder Kofi Mensah Abotsi, Stanley Benjamin Lamptey, Eric Boakye-Gyasi, Eric Woode
ETHNOPHARMACOLOGICAL RELEVANCE: The root extract of Albizia zygia (DC.) J.F. Macbr. (Leguminosae-Mimosoideae) is traditionally used in the management of pain and fever. However, little scientific data exists in literature to support its use. AIM OF STUDY: The present study evaluated the anti-nociceptive and antipyretic properties of the hydroethanolic extract of the roots of Albizia zygia in animal models. MATERIALS AND METHODS: The analgesic effects were investigated in chemical (acetic acid-induced abdominal writhing and formalin tests), thermal (tail-immersion test) and mechanical (carrageenan-induced hyperalgesia) pain models...
February 3, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28167076/brain-network-alterations-in-the-inflammatory-soup-animal-model-of-migraine
#14
Lino Becerra, James Bishop, Gabi Barmettler, Vanessa Kainz, Rami Burstein, David Borsook
Advances in our understanding of the human pain experience have shifted much of the focus of pain research from the periphery to the brain. Current hypotheses suggest that the progression of migraine depends on abnormal functioning of neurons in multiple brain regions. Accordingly, we sought to capture functional brain changes induced by the application of an inflammatory cocktail known as inflammatory soup (IS), to the dura mater across multiple brain networks. Specifically, we aimed to determine whether IS alters additional neural networks indirectly related to the primary nociceptive pathways via the spinal cord to the thalamus and cortex...
February 3, 2017: Brain Research
https://www.readbyqxmd.com/read/28166793/cytotoxic-t-cells-modulate-inflammation-and-endogenous-opioid-analgesia-in-chronic-arthritis
#15
Uta Baddack-Werncke, Melanie Busch-Dienstfertig, Sara González-Rodríguez, Santhosh Chandar Maddila, Jenny Grobe, Martin Lipp, Christoph Stein, Gerd Müller
BACKGROUND: This study examined the development of chronic pain, a cardinal symptom of rheumatoid arthritis (RA), in mice with antigen- and collagen-induced arthritis (ACIA). Since the role of CD8(+) T cells in arthritis is controversial, we investigated the consequences of CD8-depletion on arthritis development and opioid modulation of pain in this novel model of chronic autoimmune arthritis. METHODS: Disease severity in control and CD8-depleted animals was determined by histological assessment of knee-joint sections and measurement of autoantibody formation...
February 6, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28165391/charcot-marie-tooth-2b-peripheral-sensory-neuropathy-how-rab7-mutations-impact-ngf-signaling
#16
REVIEW
Harry Liu, Chengbiao Wu
Charcot-Marie-Tooth 2B peripheral sensory neuropathy (CMT2B) is a debilitating autosomal dominant hereditary sensory neuropathy. Patients with this disease lose pain sensation and frequently need amputation. Axonal dysfunction and degeneration of peripheral sensory neurons is a major clinical manifestation of CMT2B. However, the cellular and molecular pathogenic mechanisms remain undefined. CMT2B is caused by missense point mutations (L129F, K157N, N161T/I, V162M) in Rab7 GTPase. Strong evidence suggests that the Rab7 mutation(s) enhances the cellular levels of activated Rab7 proteins, thus resulting in increased lysosomal activity and autophagy...
February 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28162537/-296-mrgb2-contributes-to-mechanical-and-thermal-allodynia-in-an-animal-model-of-postoperative-pain
#17
D Green, X Dong
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28159534/chikungunya-virus-an-update-on-the-biology-and-pathogenesis-of-this-emerging-pathogen
#18
REVIEW
Felicity J Burt, Weiqiang Chen, Jonathan J Miner, Deborah J Lenschow, Andres Merits, Esther Schnettler, Alain Kohl, Penny A Rudd, Adam Taylor, Lara J Herrero, Ali Zaid, Lisa F P Ng, Suresh Mahalingam
Re-emergence of chikungunya virus, a mosquito-transmitted pathogen, is of serious public health concern. In the past 15 years, after decades of infrequent, sporadic outbreaks, the virus has caused major epidemic outbreaks in Africa, Asia, the Indian Ocean, and more recently the Caribbean and the Americas. Chikungunya virus is mainly transmitted by Aedes aegypti mosquitoes in tropical and subtropical regions, but the potential exists for further spread because of genetic adaptation of the virus to Aedes albopictus, a species that thrives in temperate regions...
January 31, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28148494/upregulation-of-fatty-acid-amide-hydrolase-faah-in-the-dorsal-periaqueductal-gray-is-associated-with-neuropathic-pain-and-reduced-heart-rate-in-rats
#19
Caron Dean, Cecilia J Hillard, Jeanne L Seagard, Francis A Hopp, Quinn H Hogan
Nerve damage can induce a heightened pain response to noxious stimulation, which is termed hyperalgesia. Pain itself acts as a stressor, initiating autonomic and sensory effects through the dorsal periaqueductal gray (dPAG) to induce both sympathoexcitation and analgesia, which prior studies have shown to be affected by endocannabinoid signaling. The present study addressed the hypothesis that neuropathic pain disrupts autonomic and analgesic regulation by endocannabinoid signaling in the dPAG. Endocannabinoid contents, transcript levels of endocannabinoid signaling components, and catabolic enzyme activity were analyzed in the dPAG of rats at 21 days after painful nerve injury...
February 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28147891/mechanistic-assessment-of-the-analgesic-anti-inflammatory-and-antipyretic-actions-of-dalbergia-saxatilis-in-animal-models
#20
Omoniyi K Yemitan, Olufunmilayo O Adeyemi
CONTEXT: Aqueous root extract of Dalbergia saxatilis, Hook, f., (Leguminosae) (DS) is reported useful for toothache, pains, and fever, but not scientifically proven. OBJECTIVE: This study determined its effectiveness in pain, inflammation, and fever, applying scientific models. MATERIALS AND METHODS: Swiss mice or Sprague-Dawley rats (n = 5) were pretreated with distilled water, DS (100 or 200 mg/kg), or standard drug for 30 min. The analgesic activity was measured by acetic acid writhing, tail flick, tail immersion, tail clip, hot plate, and formalin pain tests; anti-inflammatory effects were determined via carrageenan and dextran rat paw oedema tests; antipyretic activity was measured by Escherichia coli lipopolysaccharide (ECL) and turpentine in rabbits, and d-amphetamine sulphate (d-AS) pyrexia test in rats...
December 2017: Pharmaceutical Biology
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