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stress and neuropathic pain

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https://www.readbyqxmd.com/read/29159712/effect-of-kaempferol-isolated-from-seeds-of-eruca-sativa-on-changes-of-pain-sensitivity-in-streptozotocin-induced-diabetic-neuropathy
#1
Lalit Kishore, Navpreet Kaur, Randhir Singh
Generation of excessive reactive oxygen species (ROS) and advanced glycation end products (AGEs), and cellular apoptosis are implicated in the pathogenesis of diabetic neuropathy. Present study was aimed to explore the effect of Eruca sativa and Kaempferol (KP) on hyperalgesia (thermal and mechanical); tactile allodynia, motor nerve conduction velocity (MNCV) and oxidative-nitrosative stress in streptozotocin (STZ) induced experimental diabetes. Neuropathy developed in diabetic rats was evident from a marked hyperalgesia and allodynia; reduced MNCV associated with excess formation of AGEs and ROS...
November 20, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/29154836/a-new-promising-simultaneous-approach-for-attenuating-type-ii-diabetes-mellitus-induced-neuropathic-pain-in-rats-inos-inhibition-and-neuroregeneration
#2
Abhilasha Ahlawat, Saurabh Sharma
In view of the pathologic basis for the treatment of diabetic neuropathy, it is important to enhance nerve regeneration as well as prevent nerve degeneration. So, in the present study, we have investigated the effect of S-Methylisothiourea Sulfate (selective iNOS inhibitor) and Citicoline, alone and in combination, on Type II Diabetes Mellitus induced neuropathic pain in wistar rats. Type II diabetes was induced by providing high fat diet and low dose of Streptozotocin for 35 days in rats. Type II Diabetes Mellitus was assessed in terms of increased glucose, triglycerides, cholesterol, LDL levels, glucose tolerance and decrease in HDL levels...
November 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29121279/clinical-and-preclinical-perspectives-on-chemotherapy-induced-peripheral-neuropathy-cipn-a-narrative-review
#3
S J L Flatters, P M Dougherty, L A Colvin
This review provides an update on the current clinical and preclinical understanding of chemotherapy induced peripheral neuropathy (CIPN). The overview of the clinical syndrome includes a review of its assessment, diagnosis and treatment. CIPN is caused by several widely-used chemotherapeutics including paclitaxel, oxaliplatin, bortezomib. Severe CIPN may require dose reduction, or cessation, of chemotherapy, impacting on patient survival. While CIPN often resolves after chemotherapy, around 30% of patients will have persistent problems, impacting on function and quality of life...
October 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29118920/combination-therapy-with-extracorporeal-shock-wave-and-melatonin-markedly-attenuated-neuropathic-pain-in-rat
#4
Kuan-Hung Chen, Chien-Hui Yang, Christopher Glenn Wallace, Chung-Ren Lin, Chia-Kai Liu, Tsung-Cheng Yin, Tien-Hung Huang, Yi-Ling Chen, Cheuk-Kwan Sun, Hon-Kan Yip
This study tested the hypothesis that combination therapy using extracorporeal shock wave (ECSW)-melatonin (Mel) was superior to either alone at ameliorating neuropathic pain (NP). NP was induced by chronic constriction injury (CCI) to the left sciatic nerve in rats. Animals were categorized into sham control (group 1), CCI only (group 2), CCI-ECSW (group 3), CCI-Mel (group 4) and CCI-ECSW-Mel (group 5). By days 2 and 8 after CCI, the mechanical paw withdrawal threshold (MPWT)/thermal paw withdrawal latency (TPWL) were highest in group 2, lowest in group 1, significantly lower in group 5 than in groups 3 and 4 (all p<0...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29073664/effects-of-sex-and-stress-on-trigeminal-neuropathic-pain-like-behavior-in-rats
#5
Olga Anna Korczeniewska, Junad Khan, Yuanxiang Tao, Eli Eliav, Rafael Benoliel
AIMS: To investigate the effects and interactions of sex and stress (provoked by chronic restraint [RS]) on pain-like behavior in a rat model of trigeminal neuropathic pain. METHODS: The effects of sex and RS (carried out for 14 days as a model for stress) on somatosensory measures (reaction to pinprick, von Frey threshold) in a rat model of trigeminal neuropathic pain were examined. The study design was 2 × 4, with surgery (pain) and sham surgery (no pain) interacting with male restrained (RS) and unrestrained (nRS) rats and female RS and nRS rats...
October 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29069230/effects-of-n-acetylcysteine-on-spinal-cord-oxidative-stress-biomarkers-in-rats-with-neuropathic-pain
#6
A Horst, J A de Souza, M C Q Santos, A P K Riffel, C Kolberg, W A Partata
N-acetylcysteine (NAC) inhibits nociceptive transmission. This effect has been associated partly with its antioxidant properties. However, the effect of NAC on the levels of lipid hydroperoxides (a pro-oxidant marker), content of ascorbic acid (a key antioxidant molecule of nervous tissue) and total antioxidant capacity (TAC) is unknown. Thus, our study assessed these parameters in the lumbosacral spinal cord of rats with chronic constriction injury (CCI) of the sciatic nerve, one of the most commonly employed animal models of neuropathic pain...
October 19, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29067449/diosgenin-attenuates-neuropathic-pain-in-a-rat-model-of-chronic-constriction-injury
#7
Wei-Xin Zhao, Peng-Fei Wang, Hui-Gang Song, Nai Sun
Diosgenin is a steroidal saponin extract from numerous plants, including Solanum and Dioscorea species, and has been reported to possess neuroprotective activity. However, the role of diosgenin in neuropathic pain remains unclear. The present study examined the effects of diosgenin on allodynia and the levels of inflammatory mediators in rats following neuropathic pain evoked by chronic constriction injury (CCI). In addition, the underlying molecular mechanisms involved in diosgenin‑induced suppression of neuropathic pain were examined...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29061872/medical-cannabinoids-in-children-and-adolescents-a-systematic-review
#8
REVIEW
Shane Shucheng Wong, Timothy E Wilens
CONTEXT: Legalization of medical marijuana in many states has led to a widening gap between the accessibility and the evidence for cannabinoids as a medical treatment. OBJECTIVE: To systematically review published reports to identify the evidence base of cannabinoids as a medical treatment in children and adolescents. DATA SOURCES: Based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, a search of PubMed, Medline, and the Cumulative Index to Nursing and Allied Health Literature databases was conducted in May 2017...
November 2017: Pediatrics
https://www.readbyqxmd.com/read/29025136/predictors-of-responsivity-to-interdisciplinary-pain-management
#9
Melissa A Day, Melissa Brinums, Nathan Craig, Laurence Geffen, Saul Geffen, Miriam Lovai, Gina Geffen
Objective: This study investigated for whom interdisciplinary pain management (IPM) is most effective. Identification of predictors of treatment responsivity would facilitate development of patient-treatment matching algorithms to optimize outcomes. Design: Repeated measures prospective study of consecutive admissions to a two-week IPM program. Setting: Brisbane Pain Rehabilitation Service in Brisbane, Australia. Subjects: A total of 163 adults referred for chronic pain management...
July 25, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28986553/brain-atrophy-in-the-visual-cortex-and-thalamus-induced-by-severe-stress-in-animal-model
#10
Takanobu Yoshii, Naoya Oishi, Kazuya Ikoma, Isao Nishimura, Yuki Sakai, Kenichi Matsuda, Shunji Yamada, Masaki Tanaka, Mitsuhiro Kawata, Jin Narumoto, Kenji Fukui
Psychological stress induces many diseases including post-traumatic stress disorder (PTSD); however, the causal relationship between stress and brain atrophy has not been clarified. Applying single-prolonged stress (SPS) to explore the global effect of severe stress, we performed brain magnetic resonance imaging (MRI) acquisition and Voxel-based morphometry (VBM). Significant atrophy was detected in the bilateral thalamus and right visual cortex. Fluorescent immunohistochemistry for Iba-1 as the marker of activated microglia indicates regional microglial activation as stress-reaction in these atrophic areas...
October 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928988/the-effect-of-glucocorticoid-and-glucocorticoid-receptor-interactions-on-brain-spinal-cord-and-glial-cell-plasticity
#11
REVIEW
Kathryn M Madalena, Jessica K Lerch
Stress, injury, and disease trigger glucocorticoid (GC) elevation. Elevated GCs bind to the ubiquitously expressed glucocorticoid receptor (GR). While GRs are in every cell in the nervous system, the expression level varies, suggesting that diverse cell types react differently to GR activation. Stress/GCs induce structural plasticity in neurons, Schwann cells, microglia, oligodendrocytes, and astrocytes as well as affect neurotransmission by changing the release and reuptake of glutamate. While general nervous system plasticity is essential for adaptation and learning and memory, stress-induced plasticity is often maladaptive and contributes to neuropsychiatric disorders and neuropathic pain...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28888088/possible-modulation-of-ppar-%C3%AE-cascade-against-depression-caused-by-neuropathic-pain-in-rats
#12
Shanky Garg, Vishwajit Ravindra Deshmukh, Pranav Prasoon
BACKGROUND: Sciatic nerve ligation causes neuropathic pain with chronic constriction injury (CCI). However, there is no published report on the effect of pioglitazone as an antidepressant in the treatment of depression induced by neuropathic pain with CCI in rats. The aim of this study was to evaluate the effect of pioglitazone as an antidepressant by targeting oxidative stress by the peripheral neuropathic pain model using the CCI of the sciatic nerve. METHODS: Behavioral studies were carried out to measure thermal hyperalgesia and cold allodynia as markers of neuropathic pain and force swim test for depression...
November 27, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28839165/gene-expression-profiling-of-cutaneous-injured-and-non-injured-nociceptors-in-sni-animal-model-of-neuropathic-pain
#13
Temugin Berta, Florence E Perrin, Marie Pertin, Raquel Tonello, Yen-Chin Liu, Alexander Chamessian, Ann C Kato, Ru-Rong Ji, Isabelle Decosterd
Nociceptors are a particular subtype of dorsal root ganglion (DRG) neurons that detect noxious stimuli and elicit pain. Although recent efforts have been made to reveal the molecular profile of nociceptors in normal conditions, little is known about how this profile changes in pathological conditions. In this study we exploited laser capture microdissection to specifically collect individual injured and non-injured nociceptive DRG neurons and to define their gene profiling in rat spared nerve injury (SNI) model of neuropathic pain...
August 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28833461/melatonin-limits-paclitaxel-induced-mitochondrial-dysfunction-in-vitro-and-protects-against-paclitaxel-induced-neuropathic-pain-in-the-rat
#14
Helen F Galley, Barry McCormick, Kirsten L Wilson, Damon A Lowes, Lesley Colvin, Carole Torsney
Chemotherapy-induced neuropathic pain is a debilitating and common side effect of cancer treatment. Mitochondrial dysfunction associated with oxidative stress in peripheral nerves has been implicated in the underlying mechanism. We investigated the potential of melatonin, a potent antioxidant that preferentially acts within mitochondria, to reduce mitochondrial damage and neuropathic pain resulting from the chemotherapeutic drug paclitaxel. In vitro, paclitaxel caused a 50% reduction in mitochondrial membrane potential and metabolic rate, independent of concentration (20-100 μmol/L)...
November 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28830762/contribution-of-amygdala-crf-neurons-to-chronic-pain
#15
Matthew Andreoli, Tanvi Marketkar, Eugene Dimitrov
We investigated the role of amygdala corticotropin-releasing factor (CRF) neurons in the perturbations of descending pain inhibition caused by neuropathic pain. Forced swim increased the tail-flick response latency in uninjured mice, a phenomenon known as stress-induced analgesia (SIA) but did not change the tail-flick response latency in mice with neuropathic pain caused by sciatic nerve constriction. Neuropathic pain also increased the expression of CRF in the central amygdala (CeAmy) and ΔFosB in the dorsal horn of the spinal cord...
December 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28820799/regional-anesthesia-and-analgesia-after-surgery-in-icu
#16
Mathieu Capdevila, Séverin Ramin, Xavier Capdevila
PURPOSE OF REVIEW: The aim is to demonstrate that ICU physicians should play a pivotal role in developing regional anesthesia techniques that are underused in critically ill patients despite the proven facts in perioperative and long-term pain, organ dysfunction, and postsurgery patient health-related quality of life improvement. RECENT FINDINGS: Regional anesthesia and/or analgesia strategies in ICU reduce the surgical and trauma-stress response in surgical patients as well as complications incidence...
October 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28817717/short-report-trpv1-polymorphism-1911-a-g-alters-capsaicin-induced-sensory-changes-in-healthy-subjects
#17
Julia Forstenpointner, Matti Förster, Denisa May, Friederike Hofschulte, Ingolf Cascorbi, Gunnar Wasner, Janne Gierthmühlen, Ralf Baron
BACKGROUND: C-fibers express transient receptor potential (TRP) channels. These high-voltage gated channels function as integrators of different physical stresses (e.g. heat, protons, ATP). Additionally channel activation can be induced by capsaicin. Topically applied, capsaicin elicits burning pain, heat and mechanical hyperalgesia and serves as a human surrogate model for pain. It was suggested that the TRPV1-variant rs8065080 (1911A>G) plays a pivotal role in patients with neuropathic pain syndromes...
2017: PloS One
https://www.readbyqxmd.com/read/28799796/immune-modulation-by-curcumin-the-role-of-interleukin-10
#18
Hamid Mollazadeh, Arrigo F G Cicero, Christopher N Blesso, Matteo Pirro, Muhammed Majeed, Amirhossein Sahebkar
Cytokines are small secreted proteins released by different types of cells with specific effects on cellular signaling and communication via binding to their receptors on the cell surface. IL-10 is known to be a pleiotropic and potent anti-inflammatory and immunosuppressive cytokine that is produced by both innate and adaptive immunity cells including dendritic cells, macrophages, mast cells, natural killer cells, eosinophils, neutrophils, B cells, CD8(+) T cells, and TH1, TH2, and TH17 and regulatory T cells...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28721088/forced-exercise-attenuates-neuropathic-pain-in-chronic-constriction-injury-of-male-rat-an-investigation-of-oxidative-stress-and-inflammation
#19
Hossein Ali Safakhah, Nasroallah Moradi Kor, Atiyeh Bazargani, Ahmad Reza Bandegi, Hamid Gholami Pourbadie, Baharak Khoshkholgh-Sima, Ali Ghanbari
BACKGROUND AND OBJECTIVE: Initial peripheral/central nerve injuries, such as chronic constriction injury (CCI)/spinal cord injury, are often compounded by secondary mechanisms, including inflammation and oxidative stress, which may lead to chronic neuropathic pain characterized by hyperalgesia or allodynia. On the other hand, exercise as a behavioral and non-pharmacological treatment has been shown to alleviate chronic neuropathic pain. Therefore, this study was conducted to examine whether or not exercise reduces neuropathic pain through modifying oxidative stress and inflammation in chronic constriction injury of the sciatic nerve...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28720383/preliminary-behavioral-assessment-of-cagemates-living-with-conspecifics-submitted-to-chronic-restraint-stress-in-mice
#20
P E Carneiro de Oliveira, Caroline R Zaniboni, Isabela M Carmona, Aura R Fonseca, Azair Canto-de-Souza
The capacity of rodents to recognize and respond to emotional signs from a conspecific is a valuable adaptive behavior, which provides essential skills for species survival. However, repeated exposure to aversive situations may elicit maladaptive behavioral responses in subjects that experience noxious episodes and their colony members. Previous findings by our group demonstrated that living with a subject in neuropathic pain induces anxiogenic-like behaviors and hypernociception in mice. Whereas chronic pain may be considered a stressful stimulus, we extended our findings on stress-induced emotional transfer...
July 15, 2017: Neuroscience Letters
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