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Superoxide AND pain

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https://www.readbyqxmd.com/read/28589150/tempol-a-superoxide-dismutase-mimetic-agent-inhibits-superoxide-anion-induced-inflammatory-pain-in-mice
#1
Catia C F Bernardy, Ana C Zarpelon, Felipe A Pinho-Ribeiro, Cássia Calixto-Campos, Thacyana T Carvalho, Victor Fattori, Sergio M Borghi, Rubia Casagrande, Waldiceu A Verri
The present study evaluated the anti-inflammatory and analgesic effects of the superoxide dismutase mimetic agent tempol in superoxide anion-induced pain and inflammation. Mice were treated intraperitoneally with tempol (10-100 mg/kg) 40 min before the intraplantar injection of a superoxide anion donor, potassium superoxide (KO2, 30 μg). Mechanical hyperalgesia and thermal hyperalgesia, paw edema, and mRNA expression of peripheral and spinal cord mediators involved in inflammatory pain, TNFα, IL-1β, IL-10, COX-2, preproET-1, gp91(phox), Nrf2, GFAP, and Iba-1, were evaluated...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28572711/buprenorphine-alters-inflammatory-and-oxidative-stress-molecular-markers-in-arthritis
#2
Mahadevappa Hemshekhar, Vidyanand Anaparti, Carol Hitchon, Neeloffer Mookherjee
Buprenorphine is recommended for use as an analgesic in animal models including in murine models of collagen-induced arthritis (CIA). However, the effect of buprenorphine on the expression of disease-associated biomarkers is not well defined. We examined the effect of buprenorphine administration on disease progression and the expression of inflammatory and oxidative stress markers, in a murine model of CIA. Buprenorphine administration altered the expression of cytokines, IFN-γ, IL-6, and MMP-3, and oxidative markers, for example, iNOS, superoxide dismutase (SOD1), and catalase (CAT), in the CIA mice...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28501008/ethanol-extract-and-its-dichloromethane-fraction-of-alpinia-oxyphylla-miquel-exhibited-hepatoprotective-effects-against-ccl4-induced-oxidative-damage-in-vitro-and-in-vivo-with-the-involvement-of-nrf2
#3
Qiao Zhang, Xiaolong Hu, Fuhai Hui, Qi Song, Can Cui, Changli Wang, Qingchun Zhao
Alpinia oxyphylla Miq. (A. oxyphylla), as a kind of medicine which also be used as food, is widely used in East Asian for the treatment of dyspepsia, diarrhea, abdominal pain and deficiency cold of spleen and stomach. This study aimed to investigate the protective effects of ethanol extract (EE) and its dichloromethane fraction (DM) of A. oxyphylla, which are rich in phenolic compounds, against CCl4-induced hepatic injury in vitro and in vivo. EE, DM and silymarin ameliorated CCl4-induced decrease of cell viability and increase of reactive oxygen species (ROS) in HepG2 cells...
July 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28485773/curcumin-alleviates-lumbar-radiculopathy-by-reducing-neuroinflammation-oxidative-stress-and-nociceptive-factors
#4
L Xiao, M Ding, A Fernandez, P Zhao, L Jin, X Li
Current non-surgical treatments for lumbar radiculopathy [e.g. epidural steroids and Tumour necrosis factor-α (TNF-α) antagonists] are neither effective nor safe. As a non-toxic natural product, curcumin possesses an exceptional anti-inflammatory profile. We hypothesised that curcumin alleviates lumbar radiculopathy by attenuating neuroinflammation, oxidative stress and nociceptive factors. In a dorsal root ganglion (DRG) culture, curcumin effectively inhibited TNF-α-induced neuroinflammation, in a dose-dependent manner, as shown by mRNA and protein expression of IL-6 and COX-2...
May 9, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28464776/gastric-mucosal-oxidative-stress-markers-in-children-with-helicobacter-pylori-infection
#5
Adel Abd Elhaleim Hagag, Saleh M Amin, Mohammed H Emara, Sally E Abo-Resha
BACKGROUND: 'Helicobacter pylori' "H. pylori" is one of the most common infections that colonizes human gastric mucosa and generates reactive oxygen and nitrogen species. The aim of this study was to evaluate the oxidative stress markers in the gastric mucosa of "H. pylori"- infected children. PATIENTS AND METHODS: The present study was carried out on 60 children infected with "H. pylori" including 28 males, 32 females with their age ranging from 7-10 years and mean age value of 8...
May 2, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28430387/age-related-reduction-in-the-expression-of-foxo-transcription-factors-and-correlations-with-intervertebral-disc-degeneration
#6
Oscar Alvarez-Garcia, Tokio Matsuzaki, Merissa Olmer, Koichi Masuda, Martin K Lotz
Aging is a main risk factor for intervertebral disc (IVD) degeneration, the main cause of low back pain. FOXO transcription factors are important regulators of tissue homeostasis and longevity. Here, we determined the expression pattern of FOXO in healthy and degenerated human IVD and the associations with IVD degeneration during mouse aging. FOXO expression was assessed by immunohistochemistry in normal and degenerated human IVD samples and in cervical and lumbar IVD from 6-, 12-, 24-, and 36-month-old C57BL/6J mice...
April 21, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28391978/recombinant-protein-transduction-domain-cu-zn-superoxide-dismutase-alleviates-bone-cancer-pain-via-peroxiredoxin-4-modulation-and-antioxidation
#7
Wanjun Yao, Haiwen Zhao, Ruoshi Shi, Xiaohui Li, Yang Li, Changbin Ke, Juying Liu
Bone cancer pain (BCP) is a serious chronic clinical condition and reactive oxygen species (ROS) were considered to be involved in its development and persistency. Normally, superoxide dismutase (SOD) converts superoxide anions to hydrogen peroxide (H2O2) and H2O2 is then naturalized to be water by peroxiredoxin 4. We reported previously that recombinant protein transduction domain (PTD)-Cu/Zn SOD effectively scavenged excessive ROS and prevented cardiomyocytes from hypoxia-reoxygenation damage. However, whether PTD-Cu/Zn SOD would prevent BCP development is unknown...
May 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28371113/simulated-sunlight-mediated-photodynamic-therapy-for-melanoma-skin-cancer-by-titanium-dioxide-nanoparticle-gold-nanocluster-graphene-heterogeneous-nanocomposites
#8
Yan Cheng, Yun Chang, Yanlin Feng, Ning Liu, Xiujuan Sun, Yuqing Feng, Xi Li, Haiyuan Zhang
Simulated sunlight has promise as a light source able to alleviate the severe pain associated with patients during photodynamic therapy (PDT); however, low sunlight utilization efficiency of traditional photosensitizers dramatically limits its application. Titanium-dioxide-nanoparticle-gold-nanocluster-graphene (TAG) heterogeneous nanocomposites are designed to efficiently utilize simulated sunlight for melanoma skin cancer PDT. The narrow band gap in gold nanoclusters (Au NCs), and staggered energy bands between Au NCs, titanium dioxide nanoparticles (TiO2 NPs), and graphene can result in efficient utilization of simulated sunlight and separation of electron-hole pairs, facilitating the production of abundant hydroxyl and superoxide radicals...
March 31, 2017: Small
https://www.readbyqxmd.com/read/28369936/the-role-played-by-oxidative-stress-in-evoking-the-exercise-pressor-reflex-in-health-and-simulated-peripheral-artery-disease
#9
Jonathan E Harms, J Matthew Kuczmarski, Joyce S Kim, Gail D Thomas, Marc P Kaufman
KEY POINTS: Ligating the femoral artery of a rat for 72 h, a model for peripheral artery disease, causes an exaggerated exercise pressor reflex in response to muscle contraction. Likewise, the hindlimb muscles of rats with ligated femoral arteries show increased levels of reactive oxygen species. Infusion of tiron, a superoxide scavenger, attenuated the exaggerated pressor reflex and reduced reactive oxygen species production in rats with ligated femoral arteries. Conversely, we found no effect of tiron infusion on the pressor reflex in rats with patent femoral arteries...
March 28, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28337639/the-impact-of-mangiferin-from-belamcanda-chinensis-on-experimental-colitis-in-rats
#10
Marta Szandruk, Anna Merwid-Ląd, Adam Szeląg
BACKGROUND: Inflammatory bowel disease (IBD) [including Crohn's disease (CD) and ulcerative colitis (UC)] constitutes an important clinical problem. The pathogenesis of IBD remains unclear. It is believed that immune dysfunction, inflammatory mediators and oxidative damage play crucial roles in development of IBD. The condition is clinically associated with symptoms ranging from mild to severe during relapses, depending on the affected segment of the gastrointestinal tract. Bloody diarrhea with mucus, abdominal pain, weight loss and anemia are initial symptoms of both CD and UC...
March 24, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28301318/antihypernociceptive-and-antioxidant-effects-of-petersianthus-macrocarpus-stem-bark-extracts-in-rats-with-complete-freund-s-adjuvant-induced-persistent-inflammatory-pain
#11
Francis Desire Tatsinkou Bomba, Bibiane Aimée Wandji, Christian Kuete Fofié, Albert Kamanyi, Télesphore Benoit Nguelefack
Background Petersianthus macrocarpus (P. Beauv.) Liben (Lecythidaceae) is a plant used in Cameroonian folk medicine to cure ailments such as inflammation and pain. Previous work showed that aqueous (AEPM) and methanol (MEPM) extracts from the stem bark of P. macrocarpus possess acute analgesic activities. The present study evaluates whether the same extracts could inhibit persistent hyperalgesia induced by complete Freund's adjuvant (CFA) in rats. Methods Inflammatory pain was induced by intraplantar injection of CFA into the left hind paw of Wistar rats...
March 15, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28286117/carvedilol-prevents-functional-deficits-in-peripheral-nerve-mitochondria-of-rats-with-oxaliplatin-evoked-painful-peripheral-neuropathy
#12
Aparna Areti, Prashanth Komirishetty, Ashutosh Kumar
Oxaliplatin use as chemotherapeutic agent is frequently limited by cumulative neurotoxicity which may compromise quality of life. Reports relate this neurotoxic effect to oxidative stress and mitochondrial dysfunction in peripheral nerves and dorsal root ganglion (DRG). Carvedilol is an antihypertensive drug, has also been appreciated for its antioxidant and mitoprotective properties. Carvedilol co-treatment did not reduce the anti-tumor effects of oxaliplatin in human colon cancer cells (HT-29), but exhibited free radical scavenging activity against oxaliplatin-induced oxidative stress in neuronal cells (Neuro-2a)...
May 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28225868/n-acetylcysteine-downregulates-phosphorylated-p-38-expression-but-does-not-reverse-the-increased-superoxide-anion-levels-in-the-spinal-cord-of-rats-with-neuropathic-pain
#13
A Horst, J A de Souza, M C Q Santos, A P K Riffel, C Kolberg, M F M Ribeiro, L S de Fraga, W A Partata
We determined the effect of N-acetylcysteine (NAC) on the expression of the phosphorylated p38 (p-p38) protein and superoxide anion generation (SAG), two important players in the processing of neuropathic pain, in the lumbosacral spinal cord of rats with chronic constriction injury (CCI)-induced neuropathic pain. The sciatic functional index (SFI) was also measured to assess the functional recovery post-nerve lesion. Thirty-six male Wistar rats 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 2, 4, or 8 intraperitoneal injections of NAC (150 mg·kg-1·day-1) or saline beginning 4 h after CCI...
February 16, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28121361/the-role-of-oxidative-stress-in-the-relation-between-fibromyalgia-and-obstructive-sleep-apnea-syndrome
#14
T Yildirim, R Alp
OBJECTIVE: The aim of this study is to examine the involvement of oxidative and antioxidative parameters and to evaluate the relation between fibromyalgia (FMS) and obstructive sleep apnea syndrome (OSAS). PATIENTS AND METHODS: Oxidative stress was determined by measuring the levels of malondialdehyde (MDA) and antioxidative parameters (superoxide dismutase [SOD], catalase [CAT], and glutathione peroxidase [GPx]) in 131 randomly selected patients with OSAS. The control group was composed of 129 subjects with no clinical OSAS symptoms...
January 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28068647/berberine-an-isoquinoline-alkaloid-suppresses-txnip-mediated-nlrp3-inflammasome-activation-in-msu-crystal-stimulated-raw-264-7-macrophages-through-the-upregulation-of-nrf2-transcription-factor-and-alleviates-msu-crystal-induced-inflammation-in-rats
#15
Palani Dinesh, MahaboobKhan Rasool
The current study was designed to investigate the therapeutic potential of berberine on monosodium urate (MSU) crystal stimulated RAW 264.7 macrophages and in MSU crystal induced rats. Our results indicate that berberine (25, 50 and 75μM) suppressed the levels of pro-inflammatory cytokines (interleukin-1beta (IL-1β) and tumor necrosis factor alpha (TNFα)) and intracellular reactive oxygen species in MSU crystal stimulated RAW 264.7 macrophages. The mRNA expression levels of IL-1β, caspase 1, nucleotide-binding oligomerization domain-like receptor pyrin domain containing 3 (NLRP3), thioredoxin interacting protein (TXNIP) and kelch-like ECH-associated protein 1 (Keap1) were found downregulated with the upregulation of nuclear factor erythroid-2-related factor 2 (Nrf2) transcription factor and its associated anti-oxidant enzymes: Heme oxygenase I (HO-1), superoxide dismutase (SOD1), glutathione peroxidase (GPx), NADPH quinone oxidoreductase-1 (NQO1) and catalase (CAT) in MSU crystal stimulated RAW 264...
March 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28054386/enzymatic-antioxidants-status-in-patients-with-recurrent-aphthous-stomatitis
#16
Zichuan Zhang, Shan Li, Huiqing Fang
BACKGROUND: Oxidative stress (OS) has been thought to play a main role in the etiopathogenesis of recurrent aphthous stomatitis (RAS), which is one of the most common oral mucosal diseases characterized by recurrent and painful oral ulcers. The aim of this investigation was to evaluate the enzymatic antioxidants status in patients with RAS in the active stage and remission stage. METHODS: Ninety-seven patients with idiopathic minor RAS and 102 race-, age- and gender-matched healthy individuals were recruited...
January 5, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28033582/diosgenin-ameliorates-development-of-neuropathic-pain-in-diabetic-rats-involvement-of-oxidative-stress-and-inflammation
#17
Zahra Kiasalari, Tayebeh Rahmani, Narges Mahmoudi, Tourandokht Baluchnejadmojarad, Mehrdad Roghani
Neuropathic pain is one of the prevalent complications of diabetes mellitus (DM). Oxidative stress and inflammation are the principal determinants for its development. Pharmacological interventions targeted at alleviating or suppressing these pathways are clinically promising. Diosgenin is a natural steroidal saponin with anti-diabetic and multiple protective properties. This study was designed to study the efficacy of chronic diosgenin administration on alleviation of hyperalgesia in streptozotocin (STZ)-diabetic rats...
February 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27955803/oral-acute-toxicity-study-as-well-as-tissues-oxidative-stress-and-histopathological-disorders-in-edible-camphor-administered-rats
#18
Oluwatobi T Somade, Kafilat D Adeniji, Abdul-Rahman A Adesina, Oluremi J Olurinde
In the South-western part of Nigeria, edible camphor (EC) infusions are used to treat pile, back pain, and erectile dysfunction, especially in preparation for sexual intercourse. We therefore carried out oral acute toxicity study, and then investigated the effects of various doses of EC on the activities of lactate dehydrogenase (LDH), catalase (CAT), and superoxide dismutase (SOD), as well as reduced glutathione (GSH) and malondialdehyde (MDA) levels in wistar rats. Oral LD50 of EC was estimated to be 9487mg/kg body weight...
February 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/27937009/the-anti-arthritic-activity-of-total-glycosides-from-pterocephalus-hookeri-a-traditional-tibetan-herbal-medicine
#19
Xiao-Fei Shen, Yong Zeng, Jia-Chuan Li, Ce Tang, Yi Zhang, Xian-Li Meng
CONTEXT: Pterocephalus hookeri (C. B. Clarke) Hock., a traditional Tibetan herbal medicine rich in glycosides, has been used to treat several diseases including rheumatoid arthritis. OBJECTIVE: To evaluate the anti-arthritic activity of total glycosides from P. hookeri, and its possible mechanisms of action. MATERIALS AND METHODS: Anti-arthritic activity of total glycosides from P. hookeri (oral administration for 30 days at 14-56 mg/kg) was evaluated using paw swelling, arthritis scores and histopathological measurement in adjuvant-induced arthritis (AA) Sprague-Dawley rats...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27901334/differential-efficacy-of-methylcobalamin-and-alpha-lipoic-acid-treatment-on-negative-and-positive-symptoms-of-type-2-diabetic-peripheral-neuropathy
#20
Yajuan Han, Min Wang, Jie Shen, Zhen Zhang, Min Zhao, Jing Huang, Youming Chen, Zhi Chen, Yulan Hu, Yubing Wang
BACKGROUND: Diabetic hyperglycemia damages peripheral nerves by triggering ischemia, oxidative stress, and inflammation. Alpha-lipoic acid (ALA) and methylcobalamin (MC) are known to improve signs of diabetic peripheral neuropathy (DPN), possibly by enhancing neural and vascular endothelial cell metabolism and antioxidant capacity. We evaluated differences in efficacy following short-term MC or ALA treatment on DPN symptoms to guide clinical drug selection. METHODS: Forty DPN patients were randomly divided into MC and ALA treatment groups (n=20/20) and assessed by the Toronto Clinical Neuropathy Scoring System (TCSS), total symptom score (TSS), visual analog scale (VAS) of positive symptoms, and easy sensory test (EST) for negative symptoms before and after 2 weeks of treatment...
November 30, 2016: Minerva Endocrinologica
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