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Alkazmi L, Al-Kuraishy HM, Al-Gareeb AI, El-Bouseary MM, Ahmed EA, Batiha GES. Dantrolene and ryanodine receptors in COVID-19: The daunting task and neglected warden. Clin Exp Pharmacol Physiol 2023; 50:335-352. [PMID: 36732880 DOI: 10.1111/1440-1681.13756] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/10/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023]
Abstract
Dantrolene (DTN) is a ryanodine receptor (RyR) antagonist that inhibits Ca2+ release from stores in the sarcoplasmic reticulum. DTN is mainly used in the management of malignant hyperthermia. RyRs are highly expressed in immune cells and are involved in different viral infections, including severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2), because Ca2+ is necessary for viral replication, maturation and release. DTN can inhibit the proliferation of SARS-CoV-2, indicating its potential role in reducing entry and pathogenesis of SARS-CoV-2. DTN may increase clearance of SARS-CoV-2 and promote coronavirus disease 2019 (COVID-19) recovery by shortening the period of infection. DTN inhibits N-methyl-D-aspartate (NMDA) mediated platelets aggregations and thrombosis. Therefore, DTN may inhibit thrombosis and coagulopathy in COVID-19 through suppression of platelet NMDA receptors. Moreover, DTN has a neuroprotective effect against SARS-CoV-2 infection-induced brain injury through modulation of NMDA receptors, which are involved in excitotoxicity, neuronal injury and the development of neuropsychiatric disorders. In conclusion, DTN by inhibiting RyRs may attenuate inflammatory disorders in SARS-CoV-2 infection and associated cardio-pulmonary complications. Therefore, DNT could be a promising drug therapy against COVID-19. Preclinical and clinical studies are warranted in this regards.
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Affiliation(s)
- Luay Alkazmi
- Biology Department, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hayder M Al-Kuraishy
- Department of Clinical Pharmacology and Medicine, College of Medicine, Al-Mustansiriya University, Baghdad, Iraq
| | - Ali I Al-Gareeb
- Department of Clinical Pharmacology and Medicine, College of Medicine, Al-Mustansiriya University, Baghdad, Iraq
| | - Maisra M El-Bouseary
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Eman A Ahmed
- Department of Pharmacology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
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2
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Liu R, Chen Y, Zhao S, Zhao M, Zhao C, Wang M. Determination and tissue distribution studies of dantrolene sodium with hydroxypropyl-β-cyclodextrin in rat tissue by HPLC/MS/MS. Biomed Chromatogr 2019; 33:e4616. [PMID: 31166607 DOI: 10.1002/bmc.4616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/09/2019] [Accepted: 05/29/2019] [Indexed: 11/08/2022]
Abstract
The established analytical method for determining the concentration of dantrolene sodium (Da) in rat tissues by HPLC/MS/MS technique was successfully applied to tissue distribution studies of Da in rats. Tissue homogenate samples were pretreated by protein precipitation with pre-cooled methanol. Chromatographic separation was achieved on an Acquity HPLC column (Kromat Universil XB-C18 , 2.1 × 150 mm, 3 μm). Mass spectrometry was conducted with an electrospray ionization interface in negative ionization mode and multiple reaction monitoring was used for quantitative analysis. The results showed that Da was rapidly and widely distributed in tissues and reached the maximum concentration within 0.5 h in all tissues after oral administration of Da-hydroxypropyl-β-cyclodextrin (DHC). It was then metabolized by liver and finally excreted from kidney,which indicated that DHC inclusion complex has better absorption and higher oral bioavailability than Da. The results also provided evidence for the safety and effectiveness of drug clinical application.
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Affiliation(s)
- Ruixue Liu
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning Province, China
| | - Yu Chen
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning Province, China
| | - Shen Zhao
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning Province, China
| | - Min Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning Province, China
| | - Chunjie Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning Province, China
| | - Miao Wang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning Province, China
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Florentino IF, Silva DPB, Cardoso CS, Menegatti R, de Carvalho FS, Lião LM, Pinto PM, Peigneur S, Costa EA, Tytgat J. Antinociceptive effects of new pyrazoles compounds mediated by the ASIC-1α channel, TRPV-1 and μMOR receptors. Biomed Pharmacother 2019; 115:108915. [PMID: 31055237 DOI: 10.1016/j.biopha.2019.108915] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 04/23/2019] [Accepted: 04/23/2019] [Indexed: 12/15/2022] Open
Abstract
Pyrazoles are potent medicinal scaffolds and exhibit a wide spectrum of biological activities, such as analgesic, anti-inflammatory and antipyretic. In this paper we report on research we have performed with the aim of continuing the biological evaluation of the regio-isomeric pyrazole compounds, LQFM-020 (fluorine, para position), LQFM-021 (fluorine, meta position), and LQFM-039 (fluorine, ortho position) in models of pain induced by acidified saline, capsaicin, and formalin. We also investigated the mechanisms of action of these compounds via electrophysiological analyses using the two-electrode voltage-clamp technique and heterologous expression in Xenopus laevis oocytes. This enabled us to study different potassium channel subtypes: the ASIC-1α channel, TRPV-1, and μMOR receptors. Our results indicate that LQFM-020, LQFM-021, and LQFM-039 (15, 30 or 60 mg.kg-1) compounds inhibited the nociceptive response induced by acidified saline in a dose-dependent manner. The dose of 30 mg.kg-1 inhibited the nociceptive response induced by capsaicin by 53.3%, 51.4%, and 52.1%, respectively. In addition, we found that naloxone reverses the antinociceptive effect produced by the compounds in both phases of the formalin test. In electrophysiological analyses, we observed that the LQFM-020, LQFM-021, and LQFM-039 compounds did not modulate voltage-gated K + channel subtypes. In contrast, all the compounds tested inhibited the ASIC-1α channel at pH 4.5, with IC50-values of 96.1, 91.6, and 235.2 μM, respectively. All compounds also inhibited the TRPV-1 channel with IC50-values of 139.1, 212.5, and 159.1 μM, respectively. In contrast to the ASIC-1α and TRPV-1 targets, all compounds showed agonist activity on the μMOR receptor with an EC50-value of 117.4, 98.9, and 86.3 μM, respectively. We thus conclude that the ASIC-1α, TRPV-1, and μMOR channels are targets that are directly involved in the antinociceptive effect of LQFM-020, LQFM-021, and LQFM-039. Furthermore, the modifications of the fluorine positions in the phenyl analogs do not change the analgesic effect. However, LQFM-039 showed lower interaction with ASIC-1α channel.
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Affiliation(s)
- Iziara F Florentino
- Institute of Biological Sciences, Department of Pharmacology, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil; Toxicology and Pharmacology, University of Leuven (KU Leuven), Campus Gasthuisberg, Onderwijs en Navorsing 2, Herestraat 49, Leuven, Belgium
| | - Daiany P B Silva
- Institute of Biological Sciences, Department of Pharmacology, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Carina Sofia Cardoso
- Institute of Biological Sciences, Department of Pharmacology, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Ricardo Menegatti
- Faculty of Pharmacy, Laboratory of Medicinal Pharmaceutical Chemistry, Federal University of Goiás, Goiânia, GO, Brazil
| | - Flávio S de Carvalho
- Chemistry Institute, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Luciano M Lião
- Chemistry Institute, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Paulo M Pinto
- Laboratory of Applied Proteomics, Federal University of Pampa, Campus São Gabriel, RS, Brazil
| | - Steve Peigneur
- Toxicology and Pharmacology, University of Leuven (KU Leuven), Campus Gasthuisberg, Onderwijs en Navorsing 2, Herestraat 49, Leuven, Belgium
| | - Elson A Costa
- Institute of Biological Sciences, Department of Pharmacology, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Jan Tytgat
- Toxicology and Pharmacology, University of Leuven (KU Leuven), Campus Gasthuisberg, Onderwijs en Navorsing 2, Herestraat 49, Leuven, Belgium.
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Banarouei N, Davood A, Shafaroodi H, Saeedi G, Shafiee A. N-arylmethylideneaminophthalimide: Design, Synthesis and Evaluation as Analgesic and Anti-inflammatory Agents. Mini Rev Med Chem 2019; 19:679-687. [DOI: 10.2174/1389557518666180424101009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 10/19/2017] [Accepted: 04/09/2018] [Indexed: 11/22/2022]
Abstract
Background and Objective:
N-aryl derivatives of phthalimide and 4-nitro phthalimide have
demonstrated cyclooxygenase inhibitory activity. Also, they possess excellent analgesic and antiinflammatory
activity. In this work, a new series of N-arylmethylideneamino derivatives of
phthalimide and 4-nitro phthalimide were designed and synthesized.
Methods:
The designed compounds were synthesized by condensation of the appropriate aldehyde and
N-aminophthalimide in ethanol at room temperature at PH around 3. Their analgesic and antiinflammatory
activity were evaluated by acetic acid-induced pain test and carrageenan-induced paw
edema test in mice and rats, respectively.
Results and Conclusion::
The details of the synthesis and chemical characterization of the analogs are
described. In vivo screening showed compounds 3a, 3b, 3f and 3h were the most potent analgesic
compounds. In addition, compounds 3a, 3c, 3d, 3e and 3j indicated comparable anti-inflammatory activity
to indomethacin as a reference drug.
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Affiliation(s)
- Nasimossadat Banarouei
- Department of Medicinal Chemistry, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Asghar Davood
- Department of Medicinal Chemistry, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Hamed Shafaroodi
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ghazaleh Saeedi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Abbas Shafiee
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Research Center, Tehran University of Medical Sciences, Iran
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Parlar A, Arslan SO, Doğan MF, Çam SA, Yalçin A, Elibol E, Özer MK, Üçkardeş F, Kara H. The exogenous administration of CB2 specific agonist, GW405833, inhibits inflammation by reducing cytokine production and oxidative stress. Exp Ther Med 2018; 16:4900-4908. [PMID: 30542446 DOI: 10.3892/etm.2018.6753] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 08/24/2018] [Indexed: 12/22/2022] Open
Abstract
The present study aimed to investigate the role of cannabinoid 2 (CB2) receptors in a rat model of acute inflammation. Therefore, the potential of anti-inflammatory effects of CB2 receptor agonist (GW405833), CB2 receptor antagonist (AM630), and diclofenac, were investigated in carrageenan induced paw oedema in rats: as were assessed by measuring paw oedema; myeloperoxidase (MPO) activity in paw tissue; malondialdehyde (MDA) concentration; glutathione (GSH) level in paw tissue for oxidant/antioxidant balance; cytokine (interleukin-1β, IL-1β; tumour necrosis factor-α, TNF-α) levels in serum; histopathology of paw tissue for inflammatory cell accumulations. The results showed that GW405833 or diclofenac significantly reduced carrageenan-induced paw oedema. GW405833 also inhibited the increase of MPO activity, the recruitment of total leukocytes and neutrophils, and MDA concentration during carrageenan-induced acute inflammation, along with reversed nearly to the normal levels the increased of TNF-α, and IL-1β in serum. AM630 did not affect inflammation alone however clearly reversed the effects of agonist when co-administered. The mechanism of GW405833's suppression of inflammation is supported by these results, which are achieved by the inhibition of neutrophil migration, which regulates the reduction of oxidative stress, TNF-α and IL-1β levels. Finally, the activation of CB2 receptor, by selective agonist, has a major role in peripheral inflammation, and in the near future, targeting the peripheral cannabinoid system as a promising alternative to treat inflammation diseases may be considered a novel pharmacologic approach.
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Affiliation(s)
- Ali Parlar
- Department of Pharmacology, Faculty of Medicine, Adiyaman University, Adiyaman 02040, Turkey
| | - Seyfullah Oktay Arslan
- Department of Pharmacology, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara 06800, Turkey
| | - Muhammed Fatih Doğan
- Department of Pharmacology, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara 06800, Turkey
| | - Saliha Ayşenur Çam
- Department of Pharmacology, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara 06800, Turkey
| | - Alper Yalçin
- Department of Histology, Faculty of Medicine, Adiyaman University, Adiyaman 02040, Turkey
| | - Ebru Elibol
- Department of Histology, Faculty of Medicine, Adiyaman University, Adiyaman 02040, Turkey
| | - Mehmet Kaya Özer
- Department of Pharmacology, Faculty of Medicine, Adiyaman University, Adiyaman 02040, Turkey
| | - Fatih Üçkardeş
- Department of Biostatistics, Faculty of Medicine, Adiyaman University, Adiyaman 02040, Turkey
| | - Halil Kara
- Department of Pharmacology, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara 06800, Turkey
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Chen M, Wu Q, Jiang J, Jin X, Liu S, Wang M, Zhao C. Preparation, characterization and in vivo evaluation of a formulation of dantrolene sodium with hydroxypropyl-β-cyclodextrin. J Pharm Biomed Anal 2017; 135:153-159. [DOI: 10.1016/j.jpba.2016.12.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 11/09/2016] [Accepted: 12/18/2016] [Indexed: 01/11/2023]
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Abstract
Traumatic brain injury (TBI) is an alteration in brain function, caused by an external force, which may be a hit on the skull, rapid acceleration or deceleration, penetration of an object, or shock waves from an explosion. Traumatic brain injury is a major cause of morbidity and mortality worldwide, with a high prevalence rate in pediatric patients, in which treatment options are still limited, not available at present neuroprotective drugs. Although the therapeutic management of these patients is varied and dependent on the severity of the injury, general techniques of drug types are handled, as well as physical and surgical. Baclofen is a muscle relaxant used to treat spasticity and improve mobility in patients with spinal cord injuries, relieving pain and muscle stiffness. Pharmacological support with baclofen is contradictory, because disruption of its oral administration may cause increased muscle tone syndrome and muscle spasm, prolonged seizures, hyperthermia, dysesthesia, hallucinations, or even multisystem organ failure. Combined treatments must consider the pathophysiology of broader alterations than only excitation/inhibition context, allowing the patient's reintegration with the greatest functionality.
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Konaté K, Bassolé IHN, Hilou A, Aworet-Samseny RRR, Souza A, Barro N, Dicko MH, Datté JY, M’Batchi B. Toxicity assessment and analgesic activity investigation of aqueous acetone extracts of Sida acuta Burn f . and Sida cordifolia L. (Malvaceae), medicinal plants of Burkina Faso. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 12:120. [PMID: 22883637 PMCID: PMC3478230 DOI: 10.1186/1472-6882-12-120] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 08/05/2012] [Indexed: 11/10/2022]
Abstract
BACKGROUND Sida acuta Burn f. and Sida cordifolia L. (Malvaceae) are traditionally used in Burkina Faso to treat several ailments, mainly pains, including abdominal infections and associated diseases. Despite the extensive use of these plants in traditional health care, literature provides little information regarding their toxicity and the pharmacology. This work was therefore designed to investigate the toxicological effects of aqueous acetone extracts of Sida acuta Burn f. and Sida cordifolia L. Furthermore, their analgesic capacity was assessed, in order to assess the efficiency of the traditional use of these two medicinal plants from Burkina Faso. METHOD For acute toxicity test, mice were injected different doses of each extract by intraperitoneal route and the LD50 values were determined. For the subchronic toxicity evaluation, Wistar albinos rats were treated by gavage during 28 days at different doses of aqueous acetone extracts and then haematological and biochemical parameters were determined. The analgesic effect was evaluated in mice by the acetic-acid writhing test and by the formalin test. RESULTS For the acute toxicity test, the LD50 values of 3.2 g/kg and 3.4 g/kg respectively for S. acuta Burn f. and S. cordifolia L. were obtained. Concerning the haematological and biochemical parameters, data varied widely (increase or decrease) according to dose of extracts and weight of rats and did not show clinical correlations. The extracts have produced significant analgesic effects by the acetic acid writhing test and by the hot plate method (p <0.05) and a dose-dependent inhibition was observed. CONCLUSION The overall results of this study may justify the traditional uses of S. acuta and S. cordifolia .
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Affiliation(s)
- Kiessoun Konaté
- Laboratory of Biochemistry and Applied Chemistry, University of Ouagadougou, 09 P.O.Box: 848, Ouagadougou 09, Burkina Faso
- Laboratory of Animal Physiology, Electrophysiology and Pharmacology, Faculty of Sciences, University of Science and Technology of Masuku, Franceville, Gabon
| | - Imaël Henri Nestor Bassolé
- Laboratory of Food Biochemistry, Enzymology, Biotechnology and Bioinformatic, University of Ouagadougou, 03 P.O.Box: 848, Ouagadougou 03, Burkina Faso
| | - Adama Hilou
- Laboratory of Biochemistry and Applied Chemistry, University of Ouagadougou, 09 P.O.Box: 848, Ouagadougou 09, Burkina Faso
| | - Raïssa RR Aworet-Samseny
- Institut Pharmacopoeia and Traditional Medicine, National Center for Scientific and Technological Research, P.O.Box: 1156, Libreville, Gabon
| | - Alain Souza
- Laboratory of Animal Physiology, Electrophysiology and Pharmacology, Faculty of Sciences, University of Science and Technology of Masuku, Franceville, Gabon
| | - Nicolas Barro
- Laboratory of Biochemistry and Molecular Genetics Microbial, University of Ouagadougou, 03 P.O.Box: 7131, Ouagadougou 03, Burkina Faso
| | - Mamoudou H Dicko
- Laboratory of Food Biochemistry, Enzymology, Biotechnology and Bioinformatic, University of Ouagadougou, 03 P.O.Box: 848, Ouagadougou 03, Burkina Faso
| | - Jacques Y Datté
- Laboratory of Nutrition and Pharmacology, Faculty of Biosciences, University of Cocody, Abidjan 22 P.O.Box: 582, Abidjan, Cote d’Ivoire
| | - Bertrand M’Batchi
- Laboratory of Animal Physiology, Electrophysiology and Pharmacology, Faculty of Sciences, University of Science and Technology of Masuku, Franceville, Gabon
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The ameliorating effect of dantrolene on the morphology of urinary bladder in spinal cord injured rats. Pathol Res Pract 2011; 207:775-9. [PMID: 22075388 DOI: 10.1016/j.prp.2011.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 10/12/2011] [Accepted: 10/12/2011] [Indexed: 01/13/2023]
Abstract
In animal models of spinal cord injury (SCI), the urinary bladder can undergo significant structural and physiological alterations. Dantrolene has been shown to be neuroprotective by reducing neuronal apoptosis after SCI. Furthermore, in addition to its anti-inflammatory and antioxidant properties, it appears to have a beneficial action on voiding, once this drug acts on the external urethral sphincter relaxation. In the present study, we investigated the effects of dantrolene on urinary bladder injury that follows experimental SCI. Forty-six male Wistar rats were laminectomized at T13, and a compressive trauma was performed to induce SCI. After euthanasia, the urinary bladder was removed for gross and histological evaluation. Traumatized animals showed urinary retention with severe hemorrhagic cystitis. Injured animals treated with dantrolene had less bladder hemorrhage and inflammatory infiltrate than those treated with placebo (p<0.05). Our results demonstrate that dantrolene may protect against urinary bladder lesions that follow SCI. Treating spinal cord-injured patients with this agent may be a promising additional therapeutic strategy to alleviate the accompanying inflammatory process. The results of the current study show that dantrolene has protective effects on spinal cord contusion-induced urinary bladder injury. The impaired integrity of bladder morphology was ameliorated by dantrolene treatment.
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Torres BBJ, Caldeira FMC, Gomes MG, Serakides R, de Marco Viott A, Bertagnolli AC, Fukushima FB, de Oliveira KM, Gomes MV, de Melo EG. Effects of dantrolene on apoptosis and immunohistochemical expression of NeuN in the spinal cord after traumatic injury in rats. Int J Exp Pathol 2010; 91:530-6. [PMID: 21039984 DOI: 10.1111/j.1365-2613.2010.00738.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Dantrolene has been shown to be neuroprotective by reducing neuronal apoptosis after brain injury in several animal models of neurological disorders. In this study, we investigated the effects of dantrolene on experimental spinal cord injury (SCI). Forty-six male Wistar rats were laminectomized at T13 and divided in six groups: GI (n = 7) underwent SCI with placebo and was euthanized after 32 h; GII (n = 7) underwent laminectomy alone with placebo and was euthanized after 32 h; GIII (n = 8) underwent SCI with dantrolene and was euthanized after 32 h; GIV (n = 8) underwent SCI with placebo and was euthanized after 8 days; GV (n = 8) underwent laminectomy alone with placebo and was euthanized after 8 days; and GVI (n = 8) underwent SCI with dantrolene and was euthanized after 8 days. A compressive trauma was performed to induce SCI. After euthanasia, the spinal cord was evaluated using light microscopy, TUNEL staining and immunochemistry with anti-Caspase-3 and anti-NeuN. Animals treated with dantrolene showed a smaller number of TUNEL-positive and caspase-3-positive cells and a larger number of NeuN-positive neurons, both at 32 h and 8 days (P ≤ 0.05). These results showed that dantrolene protects spinal cord tissue after traumatic SCI by decreasing apoptotic cell death.
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Affiliation(s)
- Bruno Benetti Junta Torres
- Departament of Veterinary Medicine and Surgery, School of Veterinary, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Aslan A, Cemek M, Buyukokuroglu ME, Altunbas K, Bas O, Yurumez Y, Cosar M. Dantrolene can reduce secondary damage after spinal cord injury. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2009; 18:1442-51. [PMID: 19468761 DOI: 10.1007/s00586-009-1033-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 04/03/2009] [Accepted: 05/10/2009] [Indexed: 12/11/2022]
Abstract
The aim of this experimental study was to investigate the possible protective effects of dantrolene on traumatic spinal cord injury (SCI). Twenty-four New Zealand rabbits were divided into three groups: Sham (no drug or operation, n = 8), Control (SCI + 1 mL saline intraperitoneally (i.p.), n = 8), and DNT (SCI + 10 mg/kg dantrolene in 1 mL, i.p., n = 8). Laminectomy was performed at T10 and balloon catheter was applied extradurally. Four and 24 h after surgery, rabbits were evaluated according to the Tarlov scoring system. Blood, cerebrospinal fluid and tissue sample from spinal cord were taken for measurements of antioxidant status or detection of apoptosis. After 4 h SCI, all animals in control or DNT-treated groups became paraparesic. Significant improvement was observed in DNT-treated group, 24 h after SCI, with respect to control. Traumatic SCI led to an increase in the lipid peroxidation and a decrease in enzymic or non-enzymic endogenous antioxidative defense systems, and increase in apoptotic cell numbers. DNT treatment prevented lipid peroxidation and augmented endogenous enzymic or non-enzymic antioxidative defense systems. Again, DNT treatment significantly decreased the apoptotic cell number induced by SCI. In conclusion, experimental results observed in this study suggest that treatment with dantrolene possess potential benefits for traumatic SCI.
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Affiliation(s)
- Adem Aslan
- Department of Neurosurgery, Faculty of Medicine, Afyon Kocatepe University, Ali Cetinkaya Kampusu, Afyonkarahisar, Turkey.
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Antinociceptive action of 4-methyl-5-trifluoromethyl-5-hydroxy-4, 5-dihydro-1H-pyrazole methyl ester in models of inflammatory pain in mice. Life Sci 2008; 83:739-46. [DOI: 10.1016/j.lfs.2008.09.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2008] [Revised: 09/13/2008] [Accepted: 09/17/2008] [Indexed: 01/06/2023]
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13
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Zhao X, Yu G, Guan H, Yue N, Zhang Z, Li H. Preparation of low-molecular-weight polyguluronate sulfate and its anticoagulant and anti-inflammatory activities. Carbohydr Polym 2007. [DOI: 10.1016/j.carbpol.2006.10.024] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Ucuncu H, Taysi S, Aktan B, Buyukokuroglu ME, Elmastas M. Effect of dantrolene on lipid peroxidation, lutathione and glutathione-dependent enzyme activities in experimental otitis media with effusion in guinea pigs. Hum Exp Toxicol 2006; 24:567-71. [PMID: 16323573 DOI: 10.1191/0960327105ht569oa] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The aims of our study were to assess whether the increased oxidative stress in experimental otitis media with effusion (OME) induced by histamine was reflected erythrocytes and middle ear effusion fluid by lipid peroxidation; to survey the alterations in antioxidant enzyme activities in experimental OME; and to determine the effect of dantrolene on this oxidative stress. Erythrocyte and middle ear effusion malondialdehyde (MDA) level, erythrocyte glutathione (GSH) and glutathione peroxidase (GSH-Px), glutathione reductase (GRD) and glutathione-S-transferase (GST) activities were measured in three groups of seven guinea pigs, 3 hours after injection of 0.1 mL of histamine (or saline) into the middle ear in guinea pigs with OME (experimental group), in a dantrolene sodium group and in a control group. Erythrocyte and effusion MDA levels in the dantrolene group were significantly lower than those of the experimental group. Erythrocyte GSH-Px, GST, GRD activities, and GSH levels were significantly higher in the dantrolene group than in the experimental group. Dantrolene sodium decreased the erythrocyte and effusion MDA levels, on the other hand, it increased the GSH and GSH-dependent enzymes. These findings suggest that reactive oxygen species (ROS) play a role in histamine-induced OME. Pre-treatment with dantrolene sodium increases antioxidant enzymes activities and decreases formation of MDA, the indicator of lipid peroxidation, in histamine-induced OME.
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Affiliation(s)
- H Ucuncu
- Department of Otorhinolaryngology-Head and Neck Surgery, Ataturk University, Medical School, Erzurum, Turkey
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