Evidences for amelioration of reserpine-induced fibromyalgia in rat by low dose of gamma irradiation and duloxetine. 2017

Eman E Shibrya, and Rasha R Radwan, and Mai A Abd El Fattah, and Esmat A Shabaan, and Sanaa A Kenawy
a Department of Drug Radiation Research , National Center for Radiation Research and Technology, Atomic Energy Authority , Cairo , Egypt.

Fibromyalgia is a prevalent disorder characterized by chronic widespread pain and complex symptoms. This study was conducted to investigate the potential therapeutic effect of low-dose irradiation (LDI) alone or in combination with duloxetine on the reserpine-induced fibromyalgia in rats. Fibromyalgia was induced by administration of reserpine (1 mg/kg/s.c) for 3 consecutive days. Duloxetine (30 mg/kg, p.o) was administered 60 min before a forced swimming test (FST), and rats were exposed to a single dose of γ-radiation (0.5 Gy) 1 day before the FST. Reserpine significantly increased immobility time in the FST, decreased the amount of 5-hydroxytryptamine, dopamine, and norepinephrine in cerebral cortex. It also increased malondialdehyde and nitric oxide and reduced glutathione contents in brain tissue. LDI alone or combined with duloxetine completely antagonized reserpine-induced fibromyalgia as assessed by the measured parameters. One of the most significant findings in this study was that the therapeutic effect of duloxetine was more pronounced by its combination with LDI. A possible mechanism of action of LDI and duloxetine responsible for their therapeutic effect was discussed. On the basis of the presented evidences, it could be concluded that LDI alone or combined with duloxetine could be of value in the management of fibromyalgia.

UI MeSH Term Description Entries
D008297 Male Males
D011879 Radiotherapy Dosage The total amount of radiation absorbed by tissues as a result of radiotherapy. Dosage, Radiotherapy,Dosages, Radiotherapy,Radiotherapy Dosages
D012110 Reserpine An alkaloid found in the roots of Rauwolfia serpentina and R. vomitoria. Reserpine inhibits the uptake of norepinephrine into storage vesicles resulting in depletion of catecholamines and serotonin from central and peripheral axon terminals. It has been used as an antihypertensive and an antipsychotic as well as a research tool, but its adverse effects limit its clinical use. Raunervil,Raupasil,Rausedil,Rausedyl,Serpasil,Serpivite,V-Serp,V Serp
D005356 Fibromyalgia A common nonarticular rheumatic syndrome characterized by myalgia and multiple points of focal muscle tenderness to palpation (trigger points). Muscle pain is typically aggravated by inactivity or exposure to cold. This condition is often associated with general symptoms, such as sleep disturbances, fatigue, stiffness, HEADACHES, and occasionally DEPRESSION. There is significant overlap between fibromyalgia and the chronic fatigue syndrome (FATIGUE SYNDROME, CHRONIC). Fibromyalgia may arise as a primary or secondary disease process. It is most frequent in females aged 20 to 50 years. (From Adams et al., Principles of Neurology, 6th ed, p1494-95) Diffuse Myofascial Pain Syndrome,Fibrositis,Rheumatism, Muscular,Fibromyalgia, Primary,Fibromyalgia, Secondary,Fibromyalgia-Fibromyositis Syndrome,Fibromyositis-Fibromyalgia Syndrome,Myofascial Pain Syndrome, Diffuse,Fibromyalgia Fibromyositis Syndrome,Fibromyalgia-Fibromyositis Syndromes,Fibromyalgias,Fibromyalgias, Primary,Fibromyalgias, Secondary,Fibromyositis Fibromyalgia Syndrome,Fibromyositis-Fibromyalgia Syndromes,Fibrositides,Muscular Rheumatism,Primary Fibromyalgia,Primary Fibromyalgias,Secondary Fibromyalgia,Secondary Fibromyalgias,Syndrome, Fibromyalgia-Fibromyositis,Syndrome, Fibromyositis-Fibromyalgia,Syndromes, Fibromyalgia-Fibromyositis,Syndromes, Fibromyositis-Fibromyalgia
D005720 Gamma Rays Penetrating, high-energy electromagnetic radiation emitted from atomic nuclei during NUCLEAR DECAY. The range of wavelengths of emitted radiation is between 0.1 - 100 pm which overlaps the shorter, more energetic hard X-RAYS wavelengths. The distinction between gamma rays and X-rays is based on their radiation source. Gamma Wave,Gamma Radiation,Nuclear X-Rays,Radiation, Gamma,X-Rays, Nuclear,Gamma Radiations,Gamma Ray,Gamma Waves,Nuclear X Rays,Nuclear X-Ray,Ray, Gamma,Wave, Gamma,Waves, Gamma,X Rays, Nuclear,X-Ray, Nuclear
D000068736 Duloxetine Hydrochloride A thiophene derivative and selective NEUROTRANSMITTER UPTAKE INHIBITOR for SEROTONIN and NORADRENALINE (SNRI). It is an ANTIDEPRESSIVE AGENT and ANXIOLYTIC, and is also used for the treatment of pain in patients with DIABETES MELLITUS and FIBROMYALGIA. Cymbalta,Duloxetine,Duloxetine Ethanedioate (1:1), (+-)-isomer - T353987,Duloxetine HCl,Duloxetine, (+)-isomer,LY 227942,LY 248686,LY-227942,LY-248686,LY227942,N-methyl-3-(1-naphthalenyloxy)-2-thiophenepropanamine,N-methyl-3-(1-naphthalenyloxy)-3-(2-thiophene)propanamide,HCl, Duloxetine,Hydrochloride, Duloxetine,LY248686
D000700 Analgesics Compounds capable of relieving pain without the loss of CONSCIOUSNESS. Analgesic,Anodynes,Antinociceptive Agents,Analgesic Agents,Analgesic Drugs,Agents, Analgesic,Agents, Antinociceptive,Drugs, Analgesic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D016896 Treatment Outcome Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series. Rehabilitation Outcome,Treatment Effectiveness,Clinical Effectiveness,Clinical Efficacy,Patient-Relevant Outcome,Treatment Efficacy,Effectiveness, Clinical,Effectiveness, Treatment,Efficacy, Clinical,Efficacy, Treatment,Outcome, Patient-Relevant,Outcome, Rehabilitation,Outcome, Treatment,Outcomes, Patient-Relevant,Patient Relevant Outcome,Patient-Relevant Outcomes
D017208 Rats, Wistar A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain. Wistar Rat,Rat, Wistar,Wistar Rats

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