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stress and neuropathic pain

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https://www.readbyqxmd.com/read/28620309/inhibition-of-the-trpm2-and-trpv1-channels-through-hypericum-perforatum-in-sciatic-nerve-injury-induced-rats-demonstrates-their-key-role-in-apoptosis-and-mitochondrial-oxidative-stress-of-sciatic-nerve-and-dorsal-root-ganglion
#1
Fuat Uslusoy, Mustafa Nazıroğlu, Bilal Çiğ
Sciatic nerve injury (SNI) results in neuropathic pain, which is characterized by the excessive Ca(2+) entry, reactive oxygen species (ROS) and apoptosis processes although involvement of antioxidant Hypericum perforatum (HP) through TRPM2 and TRPV1 activation has not been clarified on the processes in SNI-induced rat, yet. We investigated the protective property of HP on the processes in the sciatic nerve and dorsal root ganglion neuron (DRGN) of SNI-induced rats. The rats were divided into five groups as control, sham, sham+HP, SNI, and SNI+HP...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28554530/electrical-muscle-stimulation-induces-an-increase-of-vegfr2-on-circulating-hematopoietic-stem-cells-in-patients-with-diabetes
#2
Asa Hidmark, Ioannis Spanidis, Thomas H Fleming, Nadine Volk, Volker Eckstein, Jan B Groener, Stefan Kopf, Peter P Nawroth, Dimitrios Oikonomou
PURPOSE: External electric muscle stimulation (EMS) of the thigh muscles was found to reduce pain resulting from diabetic neuropathy (DN), a vascular complication of diabetes. This study investigated circulating hematopoietic stem cells (HSCs) after EMS treatment. Impaired function of HSCs and the subpopulation endothelial progenitor cells (EPCs), important for neovascularization and endothelial repair, has been associated with DN. METHODS: Twenty-four patients with painful DN were treated 3 times with EMS over a period of 1 week...
May 26, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28553087/association-of-dry-eye-disease-with-psychiatric-or-neurological-disorders-in-elderly-patients
#3
REVIEW
Sang Beom Han, Hee Kyung Yang, Joon Young Hyon, Won Ryang Wee
Dry eye disease (DED) is a common disease that can impair quality of life significantly. Its prevalence increases with advancing age, and the economic burden of the disease on both a patient and the society is increasing with elongation of life expectancy. The diagnosis and treatment of DED are often difficult due to the discordance between symptoms and signs of the disease. Recent studies have suggested the role of neurological or psychological factors in the development of dry eye symptoms and discrepancy of the symptoms and signs, particularly in elderly patients...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28552056/the-orexinergic-hypocretin-system-and-nociception-an-update-to-supraspinal-mechanisms
#4
Ali Roohbakhsh, Mohaddeseh Sadat Alavi, Hassan Azhdari Zarmehri
Chronic pain is a multifaceted and complex condition that is divided into somatic, visceral, and neuropathic pain. Although opioids and nonsteroidal anti-inflammatory drugs cause analgesia and are effective in the treatment of chronic pain, their utility is hampered by side effects, abuse potential, and development of tolerance to their pain-relieving effects. So, finding alternative analgesics with good efficacy and low side effects is of great interest and the orexinergic system is a potential candidate. Orexin-A and -B are exclusively expressed in the lateral hypothalamus and are involved in the feeding, sleep/wake cycle, cardiovascular function, hormone secretion, seizure, and pain modulation...
May 28, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28536509/chronic-social-stress-time-dependently-affects-neuropathic-pain-related-cold-allodynia-and-leads-to-altered-expression-of-spinal-biochemical-mediators
#5
Glenn-Marie Le Coz, Julien Genty, Fernand Anton, Ulrike Hanesch
Clinical data have shown that chronic exposure to stress may be accompanied by an enhancement of inflammation-related pain sensitivity. In this context, little is however known on the impact of stress on neuropathic pain. In the present study we addressed this issue by combining the chronic constriction injury (CCI) model with an ongoing social stress (OSS) paradigm. Cold plate and von Frey tests were performed in 48 rats divided into four groups: OSS exposed to OSS, CCI subjected to chronic nerve constriction, OSS+CCI with a combination of neuropathy and stress and CON, a control group lacking any manipulation...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28532680/decreased-spinal-endomorphin-2-contributes-to-mechanical-allodynia-in-streptozotocin-induced-diabetic-rats
#6
Le Niu, Guang-Hai Dai, Gao-Le He, Ming Yang, Hui-Min Hu, Zhong-Kai Liu, Nian-Song Qian, Yong-Liang Chen
Diabetic neuropathic pain (DNP) plays a major role in decreased life quality of diabetes patients, however, the neural mechanisms underlying DNP remain unclear. Endomorphins are the endogenous ligands for mu-opioid receptor. There is increasing evidence implicating the involvement of spinal endomorphin-2 (EM2) in neuropathic pain. In this study, using a streptozotocin induced diabetic rat model that displayed obvious mechanical allodynia, it was found that the expression of spinal EM2 was significantly decreased in DNP rats...
May 19, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28530470/cd73-controls-extracellular-adenosine-generation-in-the-trigeminal-nociceptive-nerves
#7
X Liu, L Ma, S Zhang, Y Ren, R T Dirksen
Purinergic signaling is involved in pain generation and modulation in the nociceptive sensory nervous system. Adenosine triphosphate (ATP) induces pain via activation of ionotropic P2X receptors while adenosine mediates analgesia via activation of metabotropic P1 receptors. These purinergic signaling are determined by ecto-nucleotidases that control ATP degradation and adenosine generation. Using enzymatic histochemistry, we detected ecto-AMPase activity in dental pulp, trigeminal ganglia (TG) neurons, and their nerve fibers...
June 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28506898/chromane-isolated-from-leaves-of-dillenia-indica-improves-the-neuronal-dysfunction-in-stz-induced-diabetic-neuropathy
#8
Navpreet Kaur, Lalit Kishore, Randhir Singh
ETHNOPHARMACOLOGICAL RELEVANCE: According to the Indian traditional medicine, Dillenia indica L. has shown therapeutic efficacy in various diseases. Fruits and leaves of the plant possess anti-oxidant and anti-inflammatory properties. Reactive oxygen species, formation of advanced glycation end products (AGEs) and apoptosis are implicated in the pathogenesis of diabetic neuropathy. AIM OF THE STUDY: The aim of the present study was to explore the effect of D. indica and its isolate, chromane (CR), on thermal and mechanical hyperalgesia, allodynia, MNCV and oxidative-nitrosative stress in streptozotocin-induced experimental diabetes...
May 13, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28505604/nrf2-and-nf-%C3%AE%C2%BAb-modulation-by-plumbagin-attenuates-functional-behavioural-and-biochemical-deficits-in-rat-model-of-neuropathic-pain
#9
Vijay Arruri, Prashanth Komirishetty, Aparna Areti, Siva Kumar Naik Dungavath, Ashutosh Kumar
BACKGROUND: Plumbagin is known to exhibit a broad range of biological activities including anti-cancer, antimicrobial and has been widely used traditionally. Nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-κB) inhibitory and Nuclear factor (erythroid derived-2) like-2 (Nrf2) modulatory activities of Plumbagin have been reported already. In nerve injury model of neuropathy in rats, the role of NF-κB upregulation and declined antioxidant defence has been well recognized...
February 27, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28495596/the-role-of-omega-3-and-omega-9-fatty-acids-for-the-treatment-of-neuropathic-pain-after-neurotrauma
#10
REVIEW
Iriana Galán-Arriero, Diego Serrano-Muñoz, Julio Gómez-Soriano, Carlos Goicoechea, Julian Taylor, Ana Velasco, Gerardo Ávila-Martín
Omega-3 polyunsaturated fatty acids (PUFAs), such as Docosaexaenoic Acid (DHA) and Eicosapentaenoic Acid (EPA), mediate neuroactive effects in experimental models of traumatic peripheral nerve and spinal cord injury. Cellular mechanisms of PUFAs include reduced neuroinflammation and oxidative stress, enhanced neurotrophic support, and activation of cell survival pathways. Bioactive omega-9 monounsaturated fatty acids, such as Oleic Acid (OA) and 2-Hydroxy Oleic Acid (2-OHOA), also show therapeutic effects in neurotrauma models...
May 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28390879/peripheral-nerve-injury-impairs-the-ability-to-maintain-behavioural-flexibility-following-acute-stress-in-the-rat
#11
David Mor, Michael D Kendig, James W M Kang, Gizem Gemikonakli, Paul J Austin, Eszter Kalman, Laura H Corbit
Chronic neuropathic pain often leads to impaired cognition and reduced behavioural flexibility. This study used a rat model to investigate if a peripheral nerve injury, with or without an additional acute psychological stress, alters behavioural flexibility and goal directed behaviour as measured by sensitivity to devaluation. Neuropathic pain was induced by a chronic constriction injury (CCI) of the sciatic nerve. CCI, sham-injury and naïve rats were trained to press two levers for two rewards. In outcome devaluation tests, one of the rewards was devalued by pre-feeding it to satiety, immediately prior to an extinction test measuring responding on the two levers...
April 5, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28381989/bioactive-fraction-of-annona-reticulata-bark-or-ziziphus-jujuba-root-bark-along-with-insulin-attenuates-painful-diabetic-neuropathy-through-inhibiting-nf-%C3%AE%C2%BAb-inflammatory-cascade
#12
Raghuram Kandimalla, Suvakanta Dash, Sanjeeb Kalita, Bhaswati Choudhury, Sandeep Malampati, Rajlakshmi Devi, Muthiah Ramanathan, Narayan C Talukdar, Jibon Kotoky
The present study explains the neuroprotective ability of bioactive fractions of Annona reticulata bark (ARB) and Ziziphus jujuba root bark (ZJ) along with insulin against diabetic neuropathy. By using different solvents of increasing polarity ARB and ZJ were undergone for bioactive guided fractionation. The neuroprotective ability of the all the plant fractions were tested against H2O2 induced toxicity in SHSY5Y neuroblastoma cell lines and DRG neuronal cells. Among all the fractions tested, the methanol extract of ARB and ZJ (ARBME and ZJME) and its water fractions (ARBWF and ZJWF) exhibited significant neuroprotection against H2O2 induced toxicity in SHSY5Y cells and DRG neuronal cells...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28360013/a-review-of-the-role-of-orexin-system-in-pain-modulation
#13
REVIEW
Bibi Marjan Razavi, Hossein Hosseinzadeh
The roles of orexinergic system (orexin-A, orexin-B) and their receptors (orexin receptor type-1, orexin receptor type-2) in various physiological processes such as arousal, reward seeking behavior, energy homeostasis, sensory modulation, stress processing, cognition, endocrine functions, visceral functions and pain modulation have been established. This review summarizes the studies investigating orexin antinociceptive effects and their cellular mechanisms in various types of pain including neuropathic pain, migraine and cluster headache, visceral and orofacial pains...
June 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28359564/cingulate-overexpression-of-mitogen-activated-protein-kinase-phosphatase-1-as-a-key-factor-for-depression
#14
Florent Barthas, Muris Humo, Ralf Gilsbach, Elisabeth Waltisperger, Meltem Karatas, Samuel Leman, Lutz Hein, Catherine Belzung, Anne-Laurence Boutillier, Michel Barrot, Ipek Yalcin
BACKGROUND: Depression is frequently associated with chronic pain or chronic stress. Among cortical areas, the anterior cingulate cortex (ACC, areas 24a and 24b) appears to be important for mood disorders and constitutes a neuroanatomical substrate for investigating the underlying molecular mechanisms. The current work aimed at identifying ACC molecular factors subserving depression. METHODS: Anxiodepressive-like behaviors in C57BL/6J male mice were induced by neuropathic pain, unpredictable chronic mild stress, and optogenetic ACC stimulation and were evaluated using novelty suppressed feeding, splash, and forced swim tests...
February 14, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28325815/neuropathic-pain-promotes-adaptive-changes-in-gene-expression-in-brain-networks-involved-in-stress-and-depression
#15
Giannina Descalzi, Vasiliki Mitsi, Immanuel Purushothaman, Sevasti Gaspari, Kleopatra Avrampou, Yong-Hwee Eddie Loh, Li Shen, Venetia Zachariou
Neuropathic pain is a complex chronic condition characterized by various sensory, cognitive, and affective symptoms. A large percentage of patients with neuropathic pain are also afflicted with depression and anxiety disorders, a pattern that is also seen in animal models. Furthermore, clinical and preclinical studies indicate that chronic pain corresponds with adaptations in several brain networks involved in mood, motivation, and reward. Chronic stress is also a major risk factor for depression. We investigated whether chronic pain and stress affect similar molecular mechanisms and whether chronic pain can affect gene expression patterns that are involved in depression...
March 21, 2017: Science Signaling
https://www.readbyqxmd.com/read/28320049/d-%C3%AE-hydroxybutyrate-promotes-functional-recovery-and-relieves-pain-hypersensitivity-in-mice-with-spinal-cord-injury
#16
Jiao Qian, Wenjun Zhu, Ming Lu, Bin Ni, Jun Yang
BACKGROUND AND PURPOSE: Spinal cord injury (SCI) leads to severe motor and sensory dysfunction and significantly reduces the quality of life. The aim of the present work was to investigate the effect of administration of exogenous D-β-hydroxybutyrate (DBHB) on functional recovery and neuropathic pain in spinal cord-injured mice. EXPERIMENTAL APPROACH: Mice were given a moderate-severe thoracic spinal contusion injury at the T9-10 level and treated with exogenous DBHB...
July 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28315678/protective-effect-of-co-administration-of-curcumin-and-sildenafil-in-alcohol-induced-neuropathy-in-rats
#17
Maninder Kaur, Amarjeet Singh, Bimlesh Kumar, Sachin Kumar Singh, Amit Bhatia, Monica Gulati, T Prakash, Palak Bawa, Adil Hussain Malik
Neuropathic pain associated with chronic alcohol consumption is a medico-socioeconomical problem that affects both central and peripheral nervous system and has no satisfactory treatment till date. The present study was designed to investigate the protective effect of co-administration of curcumin and sildenafil on alcohol induced neuropathic pain in rats. In order to carry out this, ethanol (35% v/v, 10g/kg, p.o.) was administered for 10 weeks to induce neuropathic pain. Curcumin (30 and 60mg/kg, i.p.) and sildenafil (5 and 10mg/kg, i...
March 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28286483/long-term-effects-pathophysiological-mechanisms-and-risk-factors-of-chemotherapy-induced-peripheral-neuropathies-a-comprehensive-literature-review
#18
REVIEW
Nicolas Kerckhove, Aurore Collin, Sakahlé Condé, Carine Chaleteix, Denis Pezet, David Balayssac
Neurotoxic anticancer drugs, such as platinum-based anticancer drugs, taxanes, vinca alkaloids, and proteasome/angiogenesis inhibitors are responsible for chemotherapy-induced peripheral neuropathy (CIPN). The health consequences of CIPN remain worrying as it is associated with several comorbidities and affects a specific population of patients already impacted by cancer, a strong driver for declines in older adults. The purpose of this review is to present a comprehensive overview of the long-term effects of CIPN in cancer patients and survivors...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28225710/chronic-stress-exacerbates-neuropathic-pain-via-the-integration-of-stress-affect-related-information-with-nociceptive-information-in-the-central-nucleus-of-the-amygdala
#19
Ming-Jia Li, Ling-Yu Liu, Lin Chen, Jie Cai, You Wan, Guo-Gang Xing
Exacerbation of pain by chronic stress and comorbidity of pain with stress-related psychiatric disorders, including anxiety and depression, represent significant clinical challenges. However, the underlying mechanisms still remain unclear. Here, we investigated whether chronic forced swim stress (CFSS)-induced exacerbation of neuropathic pain is mediated by the integration of stress-affect-related information with nociceptive information in the central nucleus of the amygdala (CeA). We first demonstrated that CFSS indeed produces both depressive-like behaviors and exacerbation of spared nerve injury (SNI)-induced mechanical allodynia in rats...
April 2017: Pain
https://www.readbyqxmd.com/read/28190463/prophylactic-topical-paeoniflorin-prevents-mechanical-allodynia-caused-by-paclitaxel-in-mice-through-adenosine-a1-receptors
#20
Tsugunobu Andoh, Nao Kobayashi, Daisuke Uta, Yasushi Kuraishi
BACKGROUND: The chemotherapeutic agent paclitaxel (PTX) causes refractory peripheral neuropathy as a side effect. Prophylactic oral administration of the traditional herbal medicine Shakuyakukanzoto containing Paeoniae Radix and Glycyrrhizae Radix prevents the development of PTX-induced mechanical allodynia in mice via peripheral effects, mostly due to Paeoniae Radix. However, the bioactive component responsible for the prevention of PTX-induced neuropathic pain remains unknown. PURPOSE: To determine whether a monoterpene glycoside paeoniflorin (PF), which is the principal bioactive constituent of Paeoniae Radix, has inhibitory effects on PTX-induced mechanical allodynia and investigate the underlying mechanisms...
February 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
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