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https://www.readbyqxmd.com/read/29770251/review-of-the-neurological-benefits-of-phytocannabinoids
#1
REVIEW
Joseph Maroon, Jeff Bost
Background: Numerous physical, psychological, and emotional benefits have been attributed to marijuana since its first reported use in 2,600 BC in a Chinese pharmacopoeia. The phytocannabinoids, cannabidiol (CBD), and delta-9-tetrahydrocannabinol (Δ9-THC) are the most studied extracts from cannabis sativa subspecies hemp and marijuana. CBD and Δ9-THC interact uniquely with the endocannabinoid system (ECS). Through direct and indirect actions, intrinsic endocannabinoids and plant-based phytocannabinoids modulate and influence a variety of physiological systems influenced by the ECS...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29730170/the-antidepressant-effects-of-rosiglitazone-on-rats-with-depression-induced-by-neuropathic-pain
#2
Jian Zong, Xingzhi Liao, Bingxu Ren, Zhiping Wang
A growing number of studies reported that rosiglitazone (a PPARgamma agonist) could ameliorate the painful state and prevent stress-induced depression. However, whether rosiglitazone can prevent pain-induced depression is unclear. This study aimed to explore the antidepressant effects of rosiglitazone in L5 spinal nerve transection (SNT) induced neuropathic pain rats. In addition, AMPK inhibitor (Compound C) and autophagic antagonist (3-methyladenine, 3-MA) were applied to investigate the underlying therapeutic mechanisms...
May 3, 2018: Life Sciences
https://www.readbyqxmd.com/read/29726290/alpha-lipoic-acid-in-obstetrics-and-gynecology
#3
Chiara Di Tucci, Mara Di Feliciantonio, Flaminia Vena, Carmela Capone, Michele Carlo Schiavi, Daniela Pietrangeli, Ludovico Muzii, Pierluigi Benedetti Panici
Alpha-Lipoic acid (ALA) is a natural antioxidant synthetized by plants and animals, identified as a catalytic agent for oxidative decarboxylation of pyruvate and α-ketoglutarate. In this review, we analyzed the action of ALA in gynecology and obstetrics focusing in particular on neuropathic pain and antioxidant and anti-inflammatory action. A comprehensive literature search was performed in PubMed and Cochrane Library for retrieving articles in English language on the antioxidant and anti-inflammatory effects of ALA in gynecological and obstetrical conditions...
May 4, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29671419/trpm2-a-candidate-therapeutic-target-for-treating-neurological-diseases
#4
REVIEW
Jillian Corinne Belrose, Michael Frederick Jackson
Transient receptor potential melastatin 2 (TRPM2) is a calcium (Ca2+ )-permeable non-selective cation channel belonging to the TRP ion channel family. Oxidative stress-induced TRPM2 activation provokes aberrant intracellular Ca2+ accumulation and cell death in a variety of cell types, including neurons. Aberrant TRPM2 function has been implicated in several neurological disorders including ischemia/stroke, Alzheimer's disease, neuropathic pain, Parkinson's disease and bipolar disorder. In addition to research identifying a role for TRPM2 in disease, progress has been made in the identification of physiological functions of TRPM2 in the brain, including recent evidence that TRPM2 is necessary for the induction of N-methyl-D-aspartate (NMDA) receptor-dependent long-term depression, an important form of synaptic plasticity at glutamate synapses...
April 19, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29559419/astaxanthin-ameliorates-behavioral-and-biochemical-alterations-in-in-vitro-and-in-vivo-model-of-neuropathic-pain
#5
Kuhu Sharma, Dilip Sharma, Monika Sharma, Nishant Sharma, Pankaj Bidve, Namrata Prajapati, Kiran Kalia, Vinod Tiwari
Despite considerable advances in understanding mechanisms involved in chronic pain, effective treatment remains limited. Astaxanthin, a marine natural drug, having potent anti-oxidant and anti-inflammatory activities is known to possess neuroprotective effects. However, effects of astaxanthin against nerve injury induce chronic pain remains unknown. Overactivity of glutamatergic NMDARs results in excitotoxicity which may participate in astrocytic and microglial activation during pathology which further contribute to the development of neuropathic pain...
March 17, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29546501/cannabinoid-receptors-mental-pain-and-suicidal-behavior-a-systematic-review
#6
REVIEW
Laura Colino, Javier Herranz-Herrer, Elena Gil-Benito, Teresa Ponte-Lopez, Pablo Del Sol-Calderon, Maria Rodrigo-Yanguas, María Gil-Ligero, Antonio J Sánchez-López, Jose de Leon, Hilario Blasco-Fontecilla
PURPOSE OF REVIEW: The current serotonin-based biological model of suicidal behavior (SB) may be too simplistic. There is emerging evidence that other biomarkers and biological systems may be involved in SB pathophysiology. The literature on the endocannabinoid (EC) systems and SB is limited. The objective of the present article is to review all available information on the relationship between cannabinoid receptors (CB1 and CB2 receptors), and SB and/or psychological pain. RECENT FINDINGS: Our review is limited by the small number and heterogeneity of studies identified: (1) an autopsy study describing elevated levels of CB1 receptor activity in the prefrontal cortex and suicide in both depression and alcoholism and (2) studies supporting the involvement of both CB1 and CB2 receptors in the regulation of neuropathic pain and stress-induced analgesia...
March 15, 2018: Current Psychiatry Reports
https://www.readbyqxmd.com/read/29533388/the-stress-regulator-fkbp51-a-novel-and-promising-druggable-target-for-the-treatment-of-persistent-pain-states-across-sexes
#7
Maria Maiarù, Oakley B Morgan, Tianqi Mao, Michaela Breitsamer, Harry Bamber, Max Pöhlmann, Mathias V Schmidt, Gerhard Winter, Felix Hausch, Sandrine M Géranton
It is well-established that FKBP51 regulates the stress system by modulating the sensitivity of the glucocorticoid receptor to stress hormones. Recently, we have demonstrated that FKBP51 also drives long-term inflammatory pain states in male mice by modulating glucocorticoid-signalling at spinal cord level. Here, we explored the potential of FKBP51 as a new pharmacological target for the treatment of persistent pain across the sexes. First, we demonstrated that FKBP51 regulates long-term pain states of different aetiologies independently of sex...
March 12, 2018: Pain
https://www.readbyqxmd.com/read/29513797/treatment-with-ascorbic-acid-and-%C3%AE-tocopherol-modulates-oxidative-stress-markers-in-the-spinal-cord-of-rats-with-neuropathic-pain
#8
A P K Riffel, M C Q Santos, J A de Souza, T Scheid, A Horst, C Kolberg, A Belló-Klein, W A Partata
Vitamin E (vit. E) and vitamin C (vit. C) are antioxidants that inhibit nociception. The effect of these vitamins on oxidative-stress markers in the spinal cord of rats with chronic constriction injury (CCI) of the sciatic nerve is unknown. This study investigated the effect of intraperitoneal administration of vit. E (15 mg·kg-1·day-1) and vit. C (30 mg·kg-1·day-1), given alone or in combination, on spinal cord oxidative-stress markers in CCI rats. Adult male Wistar rats weighing 200-250 g were divided equally into the following groups: Naive (rats did not undergo surgical manipulation); Sham (rats in which all surgical procedures involved in CCI were used except the ligature), and CCI (rats in which four ligatures were tied loosely around the right common sciatic nerve), which received injections of vitamins or vehicle (saline containing 1% Tween 80) for 3 or 10 days (n=6/each group)...
March 1, 2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29491840/neuropathic-pain-delving-into-the-oxidative-origin-and-the-possible-implication-of-transient-receptor-potential-channels
#9
REVIEW
Cristina Carrasco, Mustafa Naziroǧlu, Ana B Rodríguez, José A Pariente
Currently, neuropathic pain is an underestimated socioeconomic health problem affecting millions of people worldwide, which incidence may increase in the next years due to chronification of several diseases, such as cancer and diabetes. Growing evidence links neuropathic pain present in several disorders [i.e., spinal cord injury (SCI), cancer, diabetes and alcoholism] to central sensitization, as a global result of mitochondrial dysfunction induced by oxidative and nitrosative stress. Additionally, inflammatory signals and the overload in intracellular calcium ion could be also implicated in this complex network that has not yet been elucidated...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29461625/beyond-symptomatic-relief-for-chemotherapy-induced-peripheral-neuropathy-targeting-the-source
#10
REVIEW
Jiacheng Ma, Annemieke Kavelaars, Patrick M Dougherty, Cobi J Heijnen
Chemotherapy-induced peripheral neuropathy (CIPN) is a serious adverse side effect of many chemotherapeutic agents, affecting >60% of patients with cancer. Moreover, CIPN persists long into survivorship in approximately 20% to 30% of these patients. To the authors' knowledge, no drugs have been approved to date by the US Food and Drug Administration to effectively manage chemotherapy-induced neuropathic pain. The majority of the drugs tested for the management of CIPN aim at symptom relief, including pain and paresthesia, yet are not very efficacious...
February 20, 2018: Cancer
https://www.readbyqxmd.com/read/29456810/minocycline-through-attenuation-of-oxidative-stress-and-inflammatory-response-reduces-the-neuropathic-pain-in-a-rat-model-of-chronic-constriction-injury
#11
Abolfazl Abbaszadeh, Saeideh Darabi, Amin Hasanvand, Hossein Amini-Khoei, Amir Abbasnezhad, Razieh Choghakhori, Asghar Aaliehpour
Objectives: Several lines of evidence showed that minocycline possesses antioxidant and anti-inflammatory properties. This study aimed to demonstrate the effects of minocycline in rats subjected to chronic constriction injury (CCI). Materials and Methods: In this study four groups (n = 6-8) of rats were used as follows: Sham, CCI, CCI + minocycline (MIN) 10 mg/Kg (IP) and CCI + MIN 30 mg/Kg (IP). On days 3, 7, 14, and 21 post-surgery hot-plate, acetone, and von Frey tests were carried out...
February 2018: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29438840/efficacy-and-safety-of-combined-low-doses-of-either-diclofenac-or-celecoxib-with-gabapentin-versus-their-single-high-dose-in-treatment-of-neuropathic-pain-in-rats
#12
Mohamed A Ibrahim, Walaa Yehia Abdelzaher, Remon R Rofaeil, Soha Abdelwahab
Neuropathic pain is a worldwide health problem with no consensus regarding its optimal therapy. This study compared the analgesic effect and gastric, hepatic, and renal safety of combined low doses of diclofenac and celecoxib with gabapentin versus their individual high doses in the treatment of neuropathic pain in rats. Left sciatic nerve ligation was used as neuropathic pain model. Rats were allocated into 7 groups (7 rats for each): sham control; model group (received vehicle); Gaba-group (received gabapentin (100 mg/kg /day); Diclo 10-group (received diclofenac (10 mg/kg); Cele 10-group (received celecoxib (10 mg/kg/day); Gaba + Diclo 5 (receivedgabapentin(100 mg/kg /day) plus diclofenac (5 mg/kg); Gaba + Cele 5 (received gabapentin (100 mg/kg/day) plus celecoxib (5 mg/kg))...
April 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29428604/experimental-neuropharmacology-of-gelsemium-sempervirens-recent-advances-and-debated-issues
#13
Paolo Bellavite, Clara Bonafini, Marta Marzotto
Gelsemium sempervirens L. (Gelsemium) is traditionally used for its anxiolytic-like properties and its action mechanism in laboratory models are under scrutiny. Evidence from rodent models was reported suggesting the existence of a high sensitivity of central nervous system to anxiolytic power of Gelsemium extracts and Homeopathic dilutions. In vitro investigation of extremely low doses of this plant extract showed a modulation of gene expression of human neurocytes. These studies were criticized in a few commentaries, generated a debate in literature and were followed by further experimental studies from various laboratories...
January 2018: Journal of Ayurveda and Integrative Medicine
https://www.readbyqxmd.com/read/29424256/effect-of-coenzyme-q10-on-mitochondrial-respiratory-proteins-in-trigeminal-neuralgia
#14
Chutikorn Khuankaew, Nattayaporn Apaijai, Passakorn Sawaddiruk, Thidarat Jaiwongkam, Sasiwan Kerdphoo, Surawut Pongsiriwet, Wichittra Tassaneeyakul, Nipon Chattipakorn, Siriporn C Chattipakorn
Trigeminal neuralgia (TN) is the neuropathic pain. Mitochondrial dysfunction, increased oxidative stress, and inflammation demonstrated in chronic pain. Carbamazepine (CBZ) is the first-line drug for TN, however, it is still insufficient. Coenzyme Q10 (CoQ10) has been used as the additional supplement for pain therapy. Nonetheless, mitochondrial respiratory proteins, oxidative stress, and inflammation in TN, and the add-on effects of CoQ10 on those defects have never been investigated. CBZ-treated TN-patients, naïve TN-patients, and control subjects were included...
February 28, 2018: Free Radical Research
https://www.readbyqxmd.com/read/29421433/the-neurotoxin-dsp-4-induces-hyperalgesia-in-rats-that-is-accompanied-by-spinal-oxidative-stress-and-cytokine-production
#15
Jillienne C Touchette, Joshua W Little, Gerald H Wilken, Daniela Salvemini, Heather Macarthur
Central neuropathic pain (CNP) a significant problem for many people, is not well-understood and difficult to manage. Dysfunction of the central noradrenergic system originating in the locus coeruleus (LC) may be a causative factor in the development of CNP. The LC is the major noradrenergic nucleus of the brain and plays a significant role in central modulation of nociceptive neurotransmission. Here, we examined CNS pathophysiological changes induced by intraperitoneal administration of the neurotoxin DSP-4 (N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine hydrochloride)...
April 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29407524/metabolic-inflammatory-vascular-comorbidity-in-psychiatric-disorders-soluble-epoxide-hydrolase-seh-as-a-possible-new-target
#16
REVIEW
W Swardfager, M Hennebelle, D Yu, B D Hammock, A J Levitt, K Hashimoto, A Y Taha
The common and severe psychiatric disorders, including major depressive disorder (MDD) and bipolar disorder (BD), are associated with inflammation, oxidative stress and changes in peripheral and brain lipid metabolism. Those pathways are implicated in the premature development of vascular and metabolic comorbidities, which account for considerable morbidity and mortality, including increased dementia risk. During endoplasmic reticulum stress, the soluble epoxide hydrolase (sEH) enzyme converts anti-inflammatory fatty acid epoxides generated by cytochrome p450 enzymes into their corresponding and generally less anti-inflammatory, or even pro-inflammatory, diols, slowing the resolution of inflammation...
April 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29392238/complex-regional-pain-syndrome-up-to-date
#17
Frank Birklein, Violeta Dimova
Complex regional pain syndrome (CRPS) was described for the first time in the 19th century by Silas Weir Mitchell. After the exclusion of other causes, CRPS is characterised by a typical clinical constellation of pain, sensory, autonomic, motor, or trophic symptoms which can no longer be explained by the initial trauma. These symptoms spread distally and are not limited to innervation territories. If CRPS is not improved in the acute phase and becomes chronic, the visible symptoms change throughout because of the changing pathophysiology; the pain, however, remains...
November 2017: Pain Reports (Baltimore, Md.)
https://www.readbyqxmd.com/read/29391860/the-relationship-between-ocular-itch-ocular-pain-and-dry-eye-symptoms-an-american-ophthalmological-society-thesis
#18
Anat Galor, Leslie Small, William Feuer, Roy C Levitt, Konstantinos D Sarantopoulos, Gil Yosipovitch
Purpose: To evaluate associations between sensations of ocular itch and dry eye (DE) symptoms, including ocular pain, and DE signs. Methods: A cross-sectional study of 324 patients seen in the Miami Veterans Affairs eye clinic was performed. The evaluation consisted of questionnaires regarding ocular itch, DE symptoms, descriptors of neuropathic-like ocular pain (NOP), and evoked pain sensitivity testing on the forehead and forearm, followed by a comprehensive ocular surface examination including corneal mechanical sensitivity testing...
August 2017: Transactions of the American Ophthalmological Society
https://www.readbyqxmd.com/read/29377353/blockade-of-dopamine-d2-receptors-disrupts-intrahippocampal-connectivity-and-enhances-pain-related-working-memory-deficits-in-neuropathic-pain-rats
#19
H Cardoso-Cruz, M Dourado, C Monteiro, V Galhardo
BACKGROUND: Dopamine (DA) is thought to be important to local hippocampal networks integrity during spatial working memory (sWM) processing. Chronic pain may contribute to deficient dopaminergic signalling, which may in turn affect cognition. However, the neural mechanisms that determine this impairment are poorly understood. Here, we evaluated whether the sWM impairment characteristic of animal models of chronic pain is dependent on DA D2 receptor (D2r) activity. METHODS: To address this issue, we implanted multichannel arrays of electrodes in the dorsal and ventral hippocampal CA1 field (dvCA1) of rats and recorded the neuronal activity during a classical delayed food-reinforced T-maze sWM task...
May 2018: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29351168/coregulation-of-endoplasmic-reticulum-stress-and-oxidative-stress-in-neuropathic-pain-and-disinhibition-of-the-spinal-nociceptive-circuitry
#20
Yanhu Ge, Yingfu Jiao, Peiying Li, Zhenghua Xiang, Zhi Li, Long Wang, Wenqian Li, Hao Gao, Jiayun Shao, Daxiang Wen, Weifeng Yu
The accumulation of unfolded or misfolded proteins in the endoplasmic reticulum (ER) lumen leads to ER stress, which is related to cellular reactive oxygen species production. Neuropathic pain may result from spinal dorsal horn (SDH) ER stress. In this study, we examined the cause-effect relationship between ER stress and neuropathic pain using the spinal nerve ligation (SNL) rat model. We showed that ER stress was mutually promotive with oxidative stress during the process. We also tested the hypothesis that spinal sensitization arose from reduced activities of GABA-ergic interneurons and that spinal sensitization was mediated by SDH ER stress...
January 9, 2018: Pain
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