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Di Petrillo A, Pintus F, Floris S, Tuberoso CIG, de Almeida ABABS, Giorno TBS, Fernandes PD, Boylan F. Effects of Euphorbia characias subsp. characias flower extracts on nociceptive pain and acute inflammatory models in mice. Fitoterapia 2024; 176:106002. [PMID: 38729245 DOI: 10.1016/j.fitote.2024.106002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 05/03/2024] [Accepted: 05/08/2024] [Indexed: 05/12/2024]
Abstract
Pain and inflammation are major health issues worldwide, leading to negative consequences. Despite several drugs being available to manage these conditions, their effectiveness can be limited by cost, adverse reactions, and potential tolerance and dependence with long-term use. Euphorbia characias traditionally used in folk medicine for its diverse biological activities - including antiproliferative, antimicrobial, and anti-inflammatory effects - has not been extensively studied in vivo for its analgesic and anti-inflammatory properties. In this study, the antinociceptive and anti-inflammatory properties of the water and ethanolic extracts of E. characias flowers (ECAEFl and ECEEFl) were evaluated using various models. Both extracts significantly reduced paw licking time in a formalin-induced paw licking model, with ECAEFl specifically targeting and ECEEFl affecting both the neurogenic and inflammatory phases. Additionally, in the carrageenan-induced cell migration model, both extracts showed a significant decrease in leukocyte migration, protein extravasation and nitric oxide levels, further demostrating their anti-inflammatory activity. High-Resolution HPLC-ESI-QTOF-MS-MS and HPLC-PDA analysis characterized the chemical composition of the extracts, identifying a significant presence of phenolic compounds, particularly quercetin and its derivatives, which likely contribute to the observed biological activities. These findings highlight the potential of E. characias extracts as natural sources of compounds with antinociceptive and anti-inflammatory properties. Further investigations are needed to elucidate the underlying mechanisms and explore their therapeutic potential in pain and inflammation-related disorders.
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Affiliation(s)
- Amalia Di Petrillo
- Department of Medical Science and Public Health, Gastroenterology Unit, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Cagliari, Italy.
| | - Francesca Pintus
- Department of Life and Environmental Sciences, University of Cagliari, SS 554-Bivio per Sestu, Monserrato, 09042, Cagliari, Italy.
| | - Sonia Floris
- Department of Life and Environmental Sciences, University of Cagliari, SS 554-Bivio per Sestu, Monserrato, 09042, Cagliari, Italy.
| | - Carlo Ignazio Giovanni Tuberoso
- Department of Life and Environmental Sciences, University of Cagliari, SS 554-Bivio per Sestu, Monserrato, 09042, Cagliari, Italy.
| | | | - Thais Biondino Sardella Giorno
- Laboratório de Farmacologia da Dor e da Inflamação, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Brazil
| | - Patricia Dias Fernandes
- School of Pharmacy and Pharmaceutical Sciences, Panoz Institute and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Fabio Boylan
- School of Pharmacy and Pharmaceutical Sciences, Panoz Institute and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
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da Costa Salomé D, de Freitas RHCN, Fraga CAM, Fernandes PD. Novel Regioisomeric Analogues of Naphthyl- N-Acylhydrazone Derivatives and Their Anti-Inflammatory Effects. Int J Mol Sci 2022; 23:13562. [PMID: 36362349 PMCID: PMC9657883 DOI: 10.3390/ijms232113562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/01/2022] [Accepted: 11/03/2022] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND When homeostasis is disturbed it can result in a pathological event named inflammation. The main drugs used in the treatment consist of non-steroidal and steroidal anti-inflammatory drugs. However, the side effects remain an obstacle during the treatments. In this study, we aimed to evaluate three new regioisomers analogues of naphthyl-N-acylhydrazone derivatives. METHODS Acute models of inflammation in vivo (formalin-induced licking and carrageenan-induced inflammation) as well as in vitro were used to evaluate the effects of LASSBio-2039, LASSBio-2040, and LASSBio-2041. RESULTS All three substances (at 1, 10 or 30 µmol/kg) presented significant effects in the in vivo model reducing leukocyte migration, nitric oxide (NO) and interleukin-1β production. It was observed that only LASSBio-2039 significantly reduced cell migration in vitro. None of the LASSBios affected inducible nitric oxide synthase activity nor presented nitric oxide (NO) scavenger effect. No toxic effect was observed, either in vivo or in vitro. The new regioisomers analogues of naphthyl-N-acylhydrazone derivatives presented significant anti-inflammatory activity, suggesting LASSBio-2039 has a direct effect in leukocytes migratory capacity. CONCLUSIONS Taken together, the data indicate that these substances present promising effects for the development of a prototype for new drugs.
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Affiliation(s)
- Dayana da Costa Salomé
- Laboratório de Farmacologia da Dor e da Inflamação, Programa de Pesquisa em Descoberta de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Rosana Helena Coimbra Nogueira de Freitas
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Programa de Pesquisa em Descoberta de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Carlos Alberto Manssour Fraga
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Programa de Pesquisa em Descoberta de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Patricia Dias Fernandes
- Laboratório de Farmacologia da Dor e da Inflamação, Programa de Pesquisa em Descoberta de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
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Hou Y, Dong B, Peng Y, Peng C, Wang M, Li X. Pharmacodynamics assessment of β-carboline from the roots of Psammosilene tunicoides as analgesic compound. JOURNAL OF ETHNOPHARMACOLOGY 2022; 291:115163. [PMID: 35247473 DOI: 10.1016/j.jep.2022.115163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/28/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The root of Psammosilene tunicoides (W. C. Wu et C. Y. Wu) is a well-known medicinal herb for the treatment of pain, hemostasia and rheumatoid arthritis among Chinese people. AIM OF THE STUDY The present study aimed to investigate the antinociceptive activity and mechanism of β-carboline alkaloids 1-4 which were extracted from the roots of P. tunicoides. MATERIALS AND METHODS The analgesic effects were evaluated using peripheral and central pain mouse models of nociception, including the formalin test and the tail flick test. The levels of glutamic acid (Glu) and nitric oxide (NO) in cerebellar cortexes and spinal cords (L4-6) were determined. The anti-inflammatory of all compounds were then assessed on RAW264.7 cells. RESULTS Our results showed that compounds 1-4 had significant analgesic effects on both phases of formalin test of mice. Furthermore, all compounds showed suppressive effects on Glu in the brain and NO levels in the brain cortex and the spinal cord. Except for compound 1, the others could extend the pain threshold of hot water tail-flick in mice. In addition, compounds 2 and 3 (60 μmol/kg) could decrease GABAAα1 protein levels in spinal cord. All compounds exhibited anti-inflammatory effects by inhibiting lipopolysaccharide (LPS)-induced NO production in RAW264.7 cells with half-maximal inhibitory concentration (IC50) 1.1-34.9 μM. CONCLUSION β-carboline alkaloids from the roots of P. tunicoides had significant analgesic activity by both central and peripheral mechanisms. Our findings suggested that regulating the release of NO or Glu or GABAα1 are some of the mechanisms of analgesic activity of β-carboline alkaloids.
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Affiliation(s)
- Yinhuan Hou
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240, China
| | - Bangjian Dong
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240, China
| | - Ying Peng
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240, China
| | - Chongsheng Peng
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240, China
| | - Mengyue Wang
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240, China
| | - Xiaobo Li
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240, China.
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Raoof M, Amanpour S, Roghani A, Abbasnejad M, Kooshki R, Askari-Zahabi K, Mohamadi-Jorjafki E, Majdzadeh B, Aarab G, Lobbezoo F. The effects of neonatal maternal deprivation and chronic unpredictable stresses on migraine-like behaviors in adult rats. Neurosci Lett 2022; 772:136444. [PMID: 35007689 DOI: 10.1016/j.neulet.2022.136444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/29/2021] [Accepted: 01/02/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND Stress is known to cause migraine. This study investigates the effects of neonatal maternal deprivation (MD) and chronic unpredictable stress (CUS) on migraine in rats. METHODS Seventy rats were randomly divided into ten groups (five groups of each sex, and seven rats/group). The groups included: untreated intact, nitroglycerin (NTG) only, NTG + MD, NTG + CUS (10 weeks after birth), and NTG + MD + CUS. For the induction of MD, pups were separated from their mothers from postnatal day 2 to day 14. The CUS was conducted by daily exposure to different stressors for 2 weeks. For the induction of migraine after stress, NTG (5 mg/kg/IP) was administered every second day for 9 days. Afterward, NTG-related symptoms, including climbing behavior, facial rubbing, body grooming, freezing behavior, and head-scratching, were recorded for 90 min. Statistical differences between the groups were analyzed by one-way and two-way ANOVA followed by the Newman-Keuls test. RESULTS Migraine symptoms, including increased head-scratching, facial rubbing, and decreased climbing behavior, were more significant in females than in males. Head scratching and facial rubbing increased in stressed females, but not in males as compared to NTG-treated rats. Body grooming was significantly decreased in MD males compared to the NTG group. The effects of NTG in MD + CUS on the rats did not differ from those in the MD or CUS groups. CONCLUSIONS MD and CUS had a sex-related aggravating effect on the development of migraine, while the combination of MD and CUS had no additive migraine-aggravating effect.
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Affiliation(s)
- Maryam Raoof
- Endodontology Research Center, Kerman University of Medical Sciences, Kerman, Iran; Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
| | - Sara Amanpour
- Department of Oral Pathology, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
| | - Arman Roghani
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Mehdi Abbasnejad
- Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Razieh Kooshki
- Department of Biology, Faculty of Sciences, Lorestan University, Khorramabad, Iran
| | - Khadijeh Askari-Zahabi
- Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Elham Mohamadi-Jorjafki
- Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Baharosadat Majdzadeh
- Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Ghizlane Aarab
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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Giorno TBS, Lima FA, Brand ALM, de Oliveira CM, Rezende CM, Fernandes PD. Characterization of βN-Octadecanoyl-5-hydroxytryptamide Anti-Inflammatory Effect. Molecules 2021; 26:molecules26123709. [PMID: 34206998 PMCID: PMC8234578 DOI: 10.3390/molecules26123709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 01/13/2023] Open
Abstract
Background: N-octadecanoyl-5-hydroxytryptamide (C18-5HT) is an amide that can be obtained by the coupling of serotonin and octadecanoic acid. This study aims to characterize the in vivo and in vitro anti-inflammatory activity of C18-5HT. Methods: A subcutaneous air pouch model (SAP) was used. The exudates were collected from SAP after carrageenan injection to assess cell migration and inflammatory mediators production. RAW 264.7 cells were used for in vitro assays. Results: C18-5HT significantly inhibited leukocyte migration into the SAP as well as nitric oxide (NO) and cytokines production and protein extravasation. We also observed an reduction in some cytokines and an increase in IL-10 production. Assays conducted with RAW 264.7 cells indicated that C18-5HT inhibited NO and cytokine produced. Conclusions: Taken together, our data suggest that C18-5HT presents a significant effect in different cell types (leukocytes collected from exudate, mainly polumorphonuclear leukocytes and cell culture macrophages) and is a promising compound for further studies for the development of a new anti-inflammatory drug.
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Affiliation(s)
- Thais Biondino Sardella Giorno
- Laboratório de Farmacologia da Dor e da Inflamação, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil;
- Correspondence:
| | - Fernanda Alves Lima
- Laboratório de Análise de Aromas, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil; (F.A.L.); (A.L.M.B.); (C.M.d.O.); (C.M.R.)
| | - Ana Laura Macedo Brand
- Laboratório de Análise de Aromas, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil; (F.A.L.); (A.L.M.B.); (C.M.d.O.); (C.M.R.)
| | - Camila Martins de Oliveira
- Laboratório de Análise de Aromas, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil; (F.A.L.); (A.L.M.B.); (C.M.d.O.); (C.M.R.)
| | - Claudia Moraes Rezende
- Laboratório de Análise de Aromas, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil; (F.A.L.); (A.L.M.B.); (C.M.d.O.); (C.M.R.)
| | - Patricia Dias Fernandes
- Laboratório de Farmacologia da Dor e da Inflamação, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil;
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Activation orexin 1 receptors in the ventrolateral periaqueductal gray matter attenuate nitroglycerin-induced migraine attacks and calcitonin gene related peptide up-regulation in trigeminal nucleus caudalis of rats. Neuropharmacology 2020; 178:107981. [DOI: 10.1016/j.neuropharm.2020.107981] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 01/27/2020] [Accepted: 01/28/2020] [Indexed: 01/01/2023]
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Zelice da Cruz de Moraes S, Shan AYKV, Oliveira Melo MA, Pereira da Silva J, Rocha Santos Passos F, de Souza Graça A, Araújo BSD, Quintans JDSS, Quintans Júnior LJ, Oliveira Barreto ED, Brandão GC, Estevam CDS. Antinociceptive and anti-inflammatory effect of Poincianella pyramidalis (Tul.) L.P. Queiroz. JOURNAL OF ETHNOPHARMACOLOGY 2020; 254:112563. [PMID: 31931158 DOI: 10.1016/j.jep.2020.112563] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 12/26/2019] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Poncianella pyramidalis (Leguminosae) is a Caatinga plant used in folk medicine because of its pharmacological properties, which include anti-inflammatory action. However, chemical compounds responsible for this effect have not yet been identified. AIM OF THE STUDY This study aimed to evaluate the antioxidant, antinociceptive and anti-inflammatory effects of the ethyl acetate fraction from the inner bark of P. pyramidalis. MATERIAL AND METHODS Total phenol content (TP) was estimated using the Folin-Ciocalteu reagent, while in vitro antioxidant activity was determined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay. Chemical identification was done using LC-PDA/MS and LC-ESI/MS/MS. In vivo antinociceptive and anti-inflammatory properties were investigated using formalin, mechanical hypernociception and carrageenan-induced pleurisy assays in mice. RESULTS TP was 525.08 ± 17.49 μg mg-1 gallic acid equivalent. The ethyl acetate fraction (EAF) inhibited 87.76% of the DPPH radical with an EC50 of 22.94 μg mL-1 and Antioxidant Activity Index of 1.74. LC-PDA/MS and LC-ESI/MS/MS identified 15 compounds that are mostly derived from gallic and ellagic acids. Regarding in vivo antinociceptive and anti-inflammatory activity, EAF (100 mg kg-1) significantly reduced the nociceptive response in the second phase of the formalin assay by 50% (p < 0.01) compared with the control group. In the hypernociception test, a significant (p < 0.001) anti-hyperalgesic effect of EAF (100 mg kg-1) was observed up to the third hour of evaluation (p < 0.001). In the carrageenan assay, EAF (100 mg kg-1) was shown to inhibit protein extravasation, increase total leukocytes and neutrophils, and inhibit mononuclear cells. CONCLUSION These results demonstrate EAF from the inner bark of P. pyramidalis has strong in vitro antioxidant effect as well as in vivo antinociceptive and anti-inflammatory activities, which may be attributed to the bark being rich in phenolic compounds derived from gallic acid.
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Affiliation(s)
| | | | | | - Juliane Pereira da Silva
- Institute of Healthy and Biological Science, Federal University of Alagoas, Maceió, AL, 57072-900, Brazil
| | | | - Ariel de Souza Graça
- Department of Physiology, Federal University of Sergipe, São Cristóvão, SE, 49000-100, Brazil
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Antinociceptive and anti-inflammatory effects of 4-(arylchalcogenyl)-1H-pyrazoles containing selenium or sulfur. Pharmacol Rep 2020; 72:36-46. [DOI: 10.1007/s43440-019-00001-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 10/01/2019] [Accepted: 10/11/2019] [Indexed: 11/25/2022]
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Bulboacă AE, Bolboacă SD, Bulboacă AC, Porfire AS, Tefas LR, Suciu ŞM, Dogaru G, Stănescu IC. Liposomal Curcumin Enhances the Effect of Naproxen in a Rat Model of Migraine. Med Sci Monit 2019; 25:5087-5097. [PMID: 31287810 PMCID: PMC6636407 DOI: 10.12659/msm.915607] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 03/13/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Curcumin is an antioxidant that reduces inflammation and pain. This study aimed to assess the effect of pretreatment with naproxen and liposomal curcumin compared with naproxen and curcumin solution on oxidative stress parameters and pain in a rat model of migraine. MATERIAL AND METHODS Sixty-three male Wistar rats included a control group (n=9) and a rat model of migraine (n=54) induced by intraperitoneal injection of nitroglycerin (1 mg/0.1 kg). The rat model group was divided into an untreated control group (n=9), a group pretreated with naproxen alone (2.8 mg/kg) (n=9), a group pretreated with naproxen (2.8 mg/kg) combined with curcumin solution (1 mg/0.1 kg) (n=9), a group pretreated with naproxen (2.8 mg/kg) combined with curcumin solution (2 mg/0.1 kg) (n=9), a group pretreated with naproxen (2.8 mg/kg) combined with liposomal curcumin solution (1 mg/0.1 kg) (n=9) a group pretreated with naproxen (2.8 mg/kg) combined with liposomal curcumin solution (2 mg/0.1 kg) (n=9). Spectroscopy measured biomarkers of total oxidative status and nociception was tested using an injection of 1% of formalin into the rat paw. RESULTS Expression of biomarkers of oxidative stress and enhanced nociception were significantly increased following pretreatment with combined naproxen and liposomal curcumin compared with curcumin solution or naproxen alone (P<0.001). Combined curcumin solution and naproxen were more effective at a concentration of 2 mg/0.1kg for the first nociceptive phase (P<0.005). CONCLUSIONS In a rat model of migraine, combined therapy with liposomal curcumin and naproxen showed an improved antioxidant effect and anti-nociceptive effect.
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Affiliation(s)
- Adriana E. Bulboacă
- Department of Pathophysiology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Sorana D. Bolboacă
- Department of Medical Informatics and Biostatistics, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Angelo C. Bulboacă
- Department of Neurology and Pediatric Neurology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Alina S. Porfire
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Lucia R. Tefas
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Şoimiţa M. Suciu
- Department of Physiology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Gabriela Dogaru
- Department of Physical Medicine and Rehabilitation, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Ioana C. Stănescu
- Department of Neurology and Pediatric Neurology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
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Demartini C, Greco R, Zanaboni AM, Sances G, De Icco R, Borsook D, Tassorelli C. Nitroglycerin as a comparative experimental model of migraine pain: From animal to human and back. Prog Neurobiol 2019; 177:15-32. [DOI: 10.1016/j.pneurobio.2019.02.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 01/19/2019] [Accepted: 02/10/2019] [Indexed: 12/13/2022]
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11
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Synthesis and Pharmacological Evaluation of Novel Selenoethers Glycerol Derivatives for the Treatment of Pain and Inflammation: Involvement of Nitrergic and Glutamatergic Systems. Appl Biochem Biotechnol 2018; 187:1398-1423. [DOI: 10.1007/s12010-018-2887-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 09/10/2018] [Indexed: 12/12/2022]
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12
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Bulboacă AE, Bolboacă SD, Stănescu IC, Sfrângeu CA, Porfire A, Tefas L, Bulboacă AC. The effect of intravenous administration of liposomal curcumin in addition to sumatriptan treatment in an experimental migraine model in rats. Int J Nanomedicine 2018; 13:3093-3103. [PMID: 29872296 PMCID: PMC5975613 DOI: 10.2147/ijn.s162087] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Curcumin has antioxidative properties that could be useful in various diseases due to its ability to act on multiple targets of various cellular pathways. We aimed to assess the efficacy of liposomal curcumin compared with curcumin solution, when in addition to sumatriptan (ST) treatment, in an experimental migraine model induced with nitroglycerin (NTG) in rats. METHODS Seven groups of 9 rats each were investigated: control group without migraine (1 mL saline solution intraperitoneal injection [ip]), control group with induced migraine, NTG+ST group (ST), NTG+ST+curcumin1 (CC1) group - 1 mg/100 g body weight (bw), NTG+ST+CC2 - 2 mg/100 g bw, NTG+ST+liposomal curcumin1 (lCC1) group - 1 mg/100 g bw, and NTG+ST+lCC2 (lCC2) group - 2 mg/100 g bw. NTG and ST were administered as 1 mL ip NTG | 1 mg/100 g bw and 1 mL ip ST | 1 mg/100 g bw, respectively. Plasma total oxidative stress (TOS), malondialdehyde (MDA), nitric oxide (NOx), thiol levels, as well as total antioxidative capacity (TAC) were assessed. The nociception process was assessed by counting the number of flinches and shakes after the formalin test. RESULTS The plasma TOS, MDA, and NOx levels, as oxidative stress parameters, were significantly decreased in the curcumin-treated groups, especially where curcumin was in liposomal form. The thiol and TAC were also improved by the curcumin treatment, with the best results obtained for the liposomal curcumin. The closest number of flinches and shakes to the control group was obtained for the group treated with liposomal curcumin at a dose of 2 mg/100 g bw. CONCLUSION Liposomal curcumin in a dose of 2 mg/100 g bw when in addition to ST treatment could be an optimum therapeutic strategy for migraine attacks and could represent a base for future clinical research and application.
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Affiliation(s)
- Adriana E Bulboacă
- Department of Pathophysiology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Sorana D Bolboacă
- Department of Medical Informatics and Biostatistics, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Ioana C Stănescu
- Department of Neurology and Pediatric Neurology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Carmen A Sfrângeu
- Department of Pathophysiology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Alina Porfire
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu-Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Lucia Tefas
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu-Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
| | - Angelo C Bulboacă
- Department of Neurology and Pediatric Neurology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
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Santos CCDS, Guilhon CC, Moreno DSA, Alviano CS, Estevam CDS, Blank AF, Fernandes PD. Anti-inflammatory, antinociceptive and antioxidant properties of Schinopsis brasiliensis bark. JOURNAL OF ETHNOPHARMACOLOGY 2018; 213:176-182. [PMID: 29155084 DOI: 10.1016/j.jep.2017.11.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 10/20/2017] [Accepted: 11/09/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Schinopsis brasiliensis is a native plant from Brazil, popularly used in folk medicine to relieve pain and treat inflammation. This study evaluated the antinociceptive and anti-inflammatory activities and antioxidant properties of the hydroethanol extract (HEE) and ethyl acetate fraction (EAF) obtained from S. brasiliensis bark. MATERIALS AND METHODS The HEE and EAF of S. brasiliensis bark (10, 30 and 100mg/kg, p.o.) were evaluated using models of analgaesia (formalin-induced licking and hot-plate models) or inflammation (licking response by formalin-induced and carrageenan-induced cell migration into the subcutaneous air pouch). The antioxidant activities of HEE and EAF (50, 100 and 200µg/ml) were evaluated using the lipoperoxidation method induced in egg yolk by 2'-azobis(2-amidinopropane) dihydrochloride (AAPH) and FeSO4. RESULTS HEE and EAF presented a central antinociceptive effect (at 100mg/kg dose), increasing the baseline and area under the curve in the hot plate model. EAF (100mg/kg) significantly reduced (p< 0.005) the pain response in the first (45%) and second (35%) phases of the formalin-induced licking model, while HEE (100mg/kg) reduced (38%) only the pain response in the second phase. Regarding anti-inflammatory activity, EAF (100mg/kg) also inhibited the inflammatory process induced by subcutaneous carrageenan injection in the SAP model, reducing the amount of the cytokine TNF-α produced. CONCLUSION HEE and EAF from S. brasiliensis bark show pharmacological interest because they were able to inhibit the peripheral and central transmission of pain. Our data also suggest that the anti-inflammatory activity caused by EAF exposure occurs through the inhibition of the pro-inflammatory cytokine TNF-α, also reducing the spreading of the inflammatory processes by neutralizing reactive oxygen species, which are by-products in the biosynthesis of pain mediators.
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Affiliation(s)
| | | | | | - Celuta Sales Alviano
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Prof. Paulo de Góes, Rio de Janeiro, Brasil
| | - Charles Dos Santos Estevam
- Universidade Federal de Sergipe, Departamento de Engenharia Agronômica, Campus Universitário, São Cristóvão, Brasil
| | - Arie Fitzgerald Blank
- Universidade Federal de Sergipe, Departamento de Engenharia Agronômica, Campus Universitário, São Cristóvão, Brasil
| | - Patricia Dias Fernandes
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brasil.
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Bulboacă AE, Bolboacă SD, Stănescu IC, Sfrângeu CA, Bulboacă AC. Preemptive Analgesic and Antioxidative Effect of Curcumin for Experimental Migraine. BIOMED RESEARCH INTERNATIONAL 2017; 2017:4754701. [PMID: 29204441 PMCID: PMC5674483 DOI: 10.1155/2017/4754701] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/11/2017] [Accepted: 09/24/2017] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Our study aimed to investigate the analgesic and antioxidative stress effects of Curcumin (CC) in experimental migraine induced by Nitroglycerin (NTG) on rats, compared with Indomethacin (ID) and Propranolol (PP) treatments. MATERIAL AND METHODS Five groups of 10 rats treated i.p. were investigated: control group (healthy rats) injected with saline solution (0.9%), NTG-control group injected with NTG (1 mg/100 gbw, bw = body weight), and three groups with pretreatment applied 30 min previous to the formalin test (NTG + CC group: Curcumin (10 mg/100 gbw), NTG + PP group: Propranolol (100 μg/100 gbw), and NTG + ID group: Indomethacin (0.5 mg/100 gbw)). Formalin test was performed and number of flinches and shakes were counted. Several oxidative stress parameters were also assessed. RESULTS The smallest values of malondialdehyde (MDA), nitric oxide (NOx), and total oxidative status (TOS) were observed on NTG + CC with significant differences as compared with the control group (p < 0.0001). The group pretreated with Curcumin proved significantly smaller number of flinches and shakes compared with both NTG + PP and NTG + ID. CONCLUSION Our study demonstrates a superior activity of Curcumin not only versus control, but also versus Propranolol and Indomethacin.
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Affiliation(s)
- Adriana E. Bulboacă
- Department of Pathophysiology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Victor Babeş Str., No. 4-6, 400012 Cluj-Napoca, Romania
| | - Sorana D. Bolboacă
- Department of Medical Informatics and Biostatistics, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Louis Pasteur Str., No. 6, 400349 Cluj-Napoca, Romania
| | - Ioana C. Stănescu
- Department of Neurology and Pediatric Neurology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Victor Babeş Str., No. 43, 400012 Cluj-Napoca, Romania
| | - Carmen A. Sfrângeu
- Department of Pathophysiology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Victor Babeş Str., No. 4-6, 400012 Cluj-Napoca, Romania
| | - Angelo C. Bulboacă
- Department of Neurology and Pediatric Neurology, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca, Victor Babeş Str., No. 43, 400012 Cluj-Napoca, Romania
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Greco R, Demartini C, Zanaboni AM, Berliocchi L, Piomelli D, Tassorelli C. Inhibition of monoacylglycerol lipase: Another signalling pathway for potential therapeutic targets in migraine? Cephalalgia 2017; 38:1138-1147. [DOI: 10.1177/0333102417727537] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Drugs that modulate endocannabinoid signalling are effective in reducing nociception in animal models of pain and may be of value in the treatment of migraine. Methods We investigated the anti-nociceptive effects of inhibition of monoacylglycerol lipase (MGL), a key enzyme in the hydrolysis of the 2-arachidonoylglycerol, in a rat model of migraine based on nitroglycerin (NTG) administration. We evaluated c-fos expression in specific brain areas and nociceptive behavior in trigeminal and extra-trigeminal body areas. Results URB602, a reversible MGL inhibitor, did not show any analgesic effect in the tail flick test, but it inhibited NTG-induced hyperalgesia in both the tail flick test and the formalin test applied to the hind paw or to the orofacial area. Quite unexpectedly, URB602 potentiated formalin-induced hyperalgesia in the trigeminal area when used alone. The latter result was also confirmed using a structurally distinct, irreversible MGL inhibitor, JZL184. URB602 did not induce neuronal activation in the area of interest, but significantly reduced the NTG-induced neuronal activation in the ventrolateral column of the periaqueductal grey and the nucleus trigeminalis caudalis. Conclusions These findings support the hypothesis that modulation of the endocannabinoid system may be a valuable approach for the treatment of migraine. The topographically segregated effect of MGL inhibition in trigeminal/extra-trigeminal areas calls for further mechanistic research.
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Affiliation(s)
- Rosaria Greco
- Laboratory of Neurophysiology of Integrative Autonomic Systems, Headache Science Centre, “C. Mondino” National Neurological Institute, Pavia, Italy
| | - Chiara Demartini
- Laboratory of Neurophysiology of Integrative Autonomic Systems, Headache Science Centre, “C. Mondino” National Neurological Institute, Pavia, Italy
- Department of Brain and Behavioral Sciences, University of Pavia, Italy
| | - Anna Maria Zanaboni
- Laboratory of Neurophysiology of Integrative Autonomic Systems, Headache Science Centre, “C. Mondino” National Neurological Institute, Pavia, Italy
- Department of Brain and Behavioral Sciences, University of Pavia, Italy
| | - Laura Berliocchi
- Department of Health Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Daniele Piomelli
- Department of Anatomy and Neurobiology, University of California, USA
| | - Cristina Tassorelli
- Laboratory of Neurophysiology of Integrative Autonomic Systems, Headache Science Centre, “C. Mondino” National Neurological Institute, Pavia, Italy
- Department of Brain and Behavioral Sciences, University of Pavia, Italy
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Ovalle-Magallanes B, Déciga-Campos M, Mata R. Antihyperalgesic activity of a mexicanolide isolated from Swietenia humilis extract in nicotinamide-streptozotocin hyperglycemic mice. Biomed Pharmacother 2017; 92:324-330. [DOI: 10.1016/j.biopha.2017.05.073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/02/2017] [Accepted: 05/15/2017] [Indexed: 10/19/2022] Open
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Greco R, Siani F, Demartini C, Zanaboni A, Nappi G, Davinelli S, Scapagnini G, Tassorelli C. Andrographis Paniculata shows anti-nociceptive effects in an animal model of sensory hypersensitivity associated with migraine. FUNCTIONAL NEUROLOGY 2016; 31:53-60. [PMID: 27027895 DOI: 10.11138/fneur/2016.31.1.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Administration of nitroglycerin (NTG) to rats induces a hyperalgesic condition and neuronal activation of central structures involved in migraine pain. In order to identify therapeutic strategies for migraine pain, we evaluated the anti-nociceptive activity of Andrographis Paniculata (AP), a herbaceous plant, in the hyperalgesia induced by NTG administration in the formalin test. We also analyzed mRNA expression of cytokines in specific brain areas after AP treatment. Male Sprague-Dawley rats were pre-treated with AP extract 30 minutes before NTG or vehicle injection. The data show that AP extract significantly reduced NTG-induced hyperalgesia in phase II of the test, 4 hours after NTG injection. In addition, AP extract reduced IL-6 mRNA expression in the medulla and mesencephalon and also mRNA levels of TNFalpha in the mesencephalic region. These findings suggest that AP extract may be a potential therapeutic approach in the treatment of general pain, and possibly of migraine.
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4-Phenylselenyl-7-chloroquinoline, a new quinoline derivative containing selenium, has potential antinociceptive and anti-inflammatory actions. Eur J Pharmacol 2016; 780:122-8. [DOI: 10.1016/j.ejphar.2016.03.039] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 03/14/2016] [Accepted: 03/23/2016] [Indexed: 11/18/2022]
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Farkas S, Bölcskei K, Markovics A, Varga A, Kis-Varga Á, Kormos V, Gaszner B, Horváth C, Tuka B, Tajti J, Helyes Z. Utility of different outcome measures for the nitroglycerin model of migraine in mice. J Pharmacol Toxicol Methods 2015; 77:33-44. [PMID: 26456070 DOI: 10.1016/j.vascn.2015.09.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/16/2015] [Accepted: 09/17/2015] [Indexed: 01/02/2023]
Abstract
INTRODUCTION Majority of the work for establishing nitroglycerin (NTG)-induced migraine models in animals was done in rats, though recently some studies in mice were also reported. Different special formulations of NTG were investigated in various studies; however, NTG treated groups were often compared to simple saline treated control groups. The aim of the present studies was to critically assess the utility of a panel of potential outcome measures in mice by revisiting previous findings and investigating endpoints that have not been tested in mice yet. METHODS We investigated two NTG formulations, Nitrolingual and Nitro Pohl, at an intraperitoneal dose of 10mg/kg, in comparison with relevant vehicle controls, and evaluated the following outcome measures: light aversive behaviour, cranial blood perfusion by laser Doppler imaging, number of c-Fos- and neuronal nitrogen monoxide synthase (nNOS)-immunoreactive neurons in the trigeminal nucleus caudalis (TNC) and trigeminal ganglia, thermal hyperalgesia and tactile allodynia of the hind paw and orofacial pain hypersensitivity. RESULTS We could not confirm previous reports of significant NTG-induced changes in light aversion and cranial blood perfusion of mice but we observed considerable effects elicited by the vehicle of Nitrolingual. In contrast, the vehicle of Nitro Pohl was apparently inert. Increased c-Fos expression in the TNC, thermal hyperalgesia, tactile allodynia and orofacial hypersensitivity were apparently good endpoints in mice that were increased by NTG-administration. The NTG-induced increase in c-Fos expression was prevented by topiramate but not by sumatriptan treatment. However, the NTG-induced orofacial hypersensitivity was dose dependently attenuated by sumatriptan. DISCUSSION Our results pointed to utilisable NTG formulations and outcome measures for NTG-induced migraine models in mice. Pending further cross-validation with positive and negative control drugs in these mouse models and in the human NTG models of migraine, these tests might be valuable translational research tools for development of new anti-migraine drugs.
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Affiliation(s)
- Sándor Farkas
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary; Research Division, Gedeon Richter Plc., H-1103 Budapest, Gyömrői út 19-21, Hungary.
| | - Kata Bölcskei
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary; János Szentágothai Research Centre, University of Pécs, Ifjúság út 20, H-7624 Pécs, Hungary.
| | - Adrienn Markovics
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary; János Szentágothai Research Centre, University of Pécs, Ifjúság út 20, H-7624 Pécs, Hungary.
| | - Anita Varga
- Laboratory of Neuropharmacology, Pharmacological and Drug Safety Research, Gedeon Richter Plc., H-1103 Budapest, Gyömrői út 19-21, Hungary.
| | - Ágnes Kis-Varga
- Laboratory of Neuropharmacology, Pharmacological and Drug Safety Research, Gedeon Richter Plc., H-1103 Budapest, Gyömrői út 19-21, Hungary.
| | - Viktória Kormos
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary.
| | - Balázs Gaszner
- Department of Anatomy, Faculty of Medicine, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary.
| | - Csilla Horváth
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary; Laboratory of Neuropharmacology, Pharmacological and Drug Safety Research, Gedeon Richter Plc., H-1103 Budapest, Gyömrői út 19-21, Hungary.
| | - Bernadett Tuka
- Neurology Department, University of Szeged, Faculty of Medicine, H-6725 Szeged, Semmelweis u. 6, Hungary; MTA-SZTE Neuroscience Research Group, H-6725 Szeged, Semmelweis u. 6, Hungary.
| | - János Tajti
- Neurology Department, University of Szeged, Faculty of Medicine, H-6725 Szeged, Semmelweis u. 6, Hungary.
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary; János Szentágothai Research Centre, University of Pécs, Ifjúság út 20, H-7624 Pécs, Hungary; MTA-PTE NAP B Chronic Pain Research Group, Faculty of Medicine, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary.
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Danesh E, Khatamsaz S, Shojaeifard M, Khabbaz Z. Effects of hydro-alcoholic extract of broccoli (Brassica oleracea) on sensory threshold of pain using the for-malin test in adult male rats. ACTA ACUST UNITED AC 2014. [DOI: 10.15412/j.jbtw.01030702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Malvar DDC, Ferreira RT, de Castro RA, de Castro LL, Freitas ACC, Costa EA, Florentino IF, Mafra JCM, de Souza GEP, Vanderlinde FA. Antinociceptive, anti-inflammatory and antipyretic effects of 1.5-diphenyl-1H-Pyrazole-3-carbohydrazide, a new heterocyclic pyrazole derivative. Life Sci 2014; 95:81-8. [DOI: 10.1016/j.lfs.2013.12.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 11/08/2013] [Accepted: 12/04/2013] [Indexed: 12/23/2022]
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Damasceno F, Skinner GO, Araújo PC, Ferraz MMD, Tenório F, de Almeida OMMS. Nitric oxide modulates the hyperalgesic response to mechanical noxious stimuli in sleep-deprived rats. BMC Neurosci 2013; 14:92. [PMID: 23987566 PMCID: PMC3765713 DOI: 10.1186/1471-2202-14-92] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 08/22/2013] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Sleep restriction alters pain perception in animals and humans, and many studies have indicated that paradoxical sleep deprivation (PSD) promotes hyperalgesia. The hyperalgesia observed after mechanical nociceptive stimulus is reversed through nitric oxide synthase (NOS) inhibition. Both nitric oxide (NO) and the dorsolateral periaqueductal gray matter (dlPAG) area of the brainstem are involved in hyperalgesia. Thus, in this work, we investigated the pain-related behavior response after mechanical noxious stimuli (electronic von Frey test), and the activity of nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d), an indicator of NOS activity, within the dlPAG of paradoxical sleep-deprived rats. We also evaluated the effects of pre-treatment with L-NAME on these parameters. RESULTS These data revealed that PSD reduced the hindpaw withdrawal threshold (-47%, p < 0.0001) confirming the hyperalgesic effect of this condition. In addition, there were more NADPH-d positive cells in dlPAG after PSD than in control rats (+ 59%, p < 0.0001). L-NAME treatment prevented the reduction in the hindpaw withdrawal threshold (+ 93%, p < 0.0001) and the increase in the NADPH-d positive cells number in the dlPAG of PSD-treated rats (-36%, p < 0.0001). CONCLUSION These data suggest that the hyperalgesic response to mechanical noxious stimuli in paradoxical sleep-deprived rats is associated with increased NOS activity in the dlPAG, which presumably influences the descending antinociceptive pathway.
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Affiliation(s)
- Fabio Damasceno
- Department of Pharmacology and Psychobiology, Institute of Biology, State University of Rio de Janeiro, Av. 28 de Setembro, 87-Fundos, 20551-030, Rio de Janeiro, Brazil
| | - Gabriela O Skinner
- Department of Pharmacology and Psychobiology, Institute of Biology, State University of Rio de Janeiro, Av. 28 de Setembro, 87-Fundos, 20551-030, Rio de Janeiro, Brazil
| | - Paulo C Araújo
- Department of Pharmacology and Psychobiology, Institute of Biology, State University of Rio de Janeiro, Av. 28 de Setembro, 87-Fundos, 20551-030, Rio de Janeiro, Brazil
| | - Marcia MD Ferraz
- Department of Pharmacology and Psychobiology, Institute of Biology, State University of Rio de Janeiro, Av. 28 de Setembro, 87-Fundos, 20551-030, Rio de Janeiro, Brazil
| | - Frank Tenório
- Department of Pharmacology and Psychobiology, Institute of Biology, State University of Rio de Janeiro, Av. 28 de Setembro, 87-Fundos, 20551-030, Rio de Janeiro, Brazil
| | - Olga MMS de Almeida
- Department of Pharmacology and Psychobiology, Institute of Biology, State University of Rio de Janeiro, Av. 28 de Setembro, 87-Fundos, 20551-030, Rio de Janeiro, Brazil
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Effects of anandamide in migraine: data from an animal model. J Headache Pain 2011; 12:177-83. [PMID: 21331757 PMCID: PMC3072518 DOI: 10.1007/s10194-010-0274-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Accepted: 11/29/2010] [Indexed: 10/29/2022] Open
Abstract
Systemic nitroglycerin (NTG) produces spontaneous-like migraine attacks in migraine sufferers and induces a condition of hyperalgesia in the rat 4 h after its administration. Endocannabinoid system seems to be involved in the modulation of NTG-induced hyperalgesia, and probably, in the pathophysiological mechanisms of migraine. In this study, the analgesic effect of anandamide (AEA) was evaluated by means of the formalin test, performed in baseline conditions and following NTG-induced hyperalgesia in male Sprague-Dawley rats. AEA was administered 30 min before the formalin injection. In addition, the effect of AEA (administered 30 min before NTG injection) was investigated on NTG-induced Fos expression and evaluated 4 h following NTG injection. AEA induced a significant decrease in the nociceptive behavior during both phases of the formalin test in the animals treated with vehicle, while it abolished NTG-induced hyperalgesia during the phase II. Pre-treatment with AEA significantly reduced the NTG-induced neuronal activation in nucleus trigeminalis caudalis, confirming the results obtained in our previous study, and in area postrema, while the same treatment induced an increase of Fos expression in paraventricular and supraoptic nuclei of the hypothalamus, parabrachial nucleus, and periaqueductal grey. The study confirms that a dysfunction of the endocannabinoid system may contribute to the development of migraine attacks and that a pharmacological modulation of CB receptors can be useful for the treatment of migraine pain.
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Bates EA, Nikai T, Brennan KC, Fu YH, Charles AC, Basbaum AI, Ptácek LJ, Ahn AH. Sumatriptan alleviates nitroglycerin-induced mechanical and thermal allodynia in mice. Cephalalgia 2011; 30:170-8. [PMID: 19489890 DOI: 10.1111/j.1468-2982.2009.01864.x] [Citation(s) in RCA: 178] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The association between the clinical use of nitroglycerin (NTG) and headache has led to the examination of NTG as a model trigger for migraine and related headache disorders, both in humans and laboratory animals. In this study in mice, we hypothesized that NTG could trigger behavioural and physiological responses that resemble a common manifestation of migraine in humans. We report that animals exhibit a dose-dependent and prolonged NTG-induced thermal and mechanical allodynia, starting 30-60 min after intraperitoneal injection of NTG at 5-10 mg/kg. NTG administration also induced Fos expression, an anatomical marker of neuronal activity in neurons of the trigeminal nucleus caudalis and cervical spinal cord dorsal horn, suggesting that enhanced nociceptive processing within the spinal cord contributes to the increased nociceptive behaviour. Moreover, sumatriptan, a drug with relative specificity for migraine, alleviated the NTG-induced allodynia. We also tested whether NTG reduces the threshold for cortical spreading depression (CSD), an event considered to be the physiological substrate of the migraine aura. We found that the threshold of CSD was unaffected by NTG, suggesting that NTG stimulates migraine mechanisms that are independent of the regulation of cortical excitability.
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Affiliation(s)
- E A Bates
- Department of Neurology, University of California, San Francisco, CA 94158, USA
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Greco R, Meazza C, Mangione AS, Allena M, Bolla M, Amantea D, Mizoguchi H, Sandrini G, Nappi G, Tassorelli C. Temporal profile of vascular changes induced by systemic nitroglycerin in the meningeal and cortical districts. Cephalalgia 2010; 31:190-8. [PMID: 20693231 DOI: 10.1177/0333102410379887] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Clinical studies indicated that nitric oxide (NO) donors cause regional changes in cerebral blood flow (CBF), similar to those reported in spontaneous migraine. Systemic nitroglycerin (NTG), a NO donor, is a well-accepted experimental model of migraine. In this study we have examined the effects of NTG on the meningeal and cortical blood flow in rats. METHODS Regional blood flow was monitored in male Sprague-Dawley rats using laser Doppler flowmetry before and after NTG/saline injection over 150 minutes. The effect of pre-treatment with Nω-nitro-L-arginine ester (L-NAME) or 7-nitroindazole (7-NI) on NTG-induced changes on blood flow was also investigated. RESULTS In the dura NTG caused a biphasic response represented by an initial decrease in blood flow followed by a significant increase. At variance, in the cortex NTG caused only an increase in blood flow. Pre-treatment with either L-NAME or 7-NI prevented NTG-induced increase in blood flow in both districts, while only L-NAME also prevented NTG-induced decrease in dural blood flow. CONCLUSION The present findings provide additional information on the timing of effects of NTG on blood flow at both the meningeal and cortical levels. These effects seem to be related to vasoregulatory mechanisms and/or metabolic activity in response to the synthesis of endogenous NO.
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Affiliation(s)
- Rosaria Greco
- IRCCS National Neurological Institute C. Mondino Foundation, Pavia, Italy.
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Reactive nitroxidative species and nociceptive processing: determining the roles for nitric oxide, superoxide, and peroxynitrite in pain. Amino Acids 2010; 42:75-94. [PMID: 20552384 DOI: 10.1007/s00726-010-0633-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Accepted: 05/15/2010] [Indexed: 12/12/2022]
Abstract
Pain is a multidimensional perception and is modified at distinct regions of the neuroaxis. During enhanced pain, neuroplastic changes occur in the spinal and supraspinal nociceptive modulating centers and may result in a hypersensitive state termed central sensitization, which is thought to contribute to chronic pain states. Central sensitization culminates in hyperexcitability of dorsal horn nociceptive neurons resulting in increased nociceptive transmission and pain perception. This state is associated with enhanced nociceptive signaling, spinal glutamate-mediated N-methyl-D: -aspartate receptor activation, neuroimmune activation, nitroxidative stress, and supraspinal descending facilitation. The nitroxidative species considered for their role in nociception and central sensitization include nitric oxide (NO), superoxide ([Formula: see text]), and peroxynitrite (ONOO(-)). Nitroxidative species are implicated during persistent but not normal nociceptive processing. This review examines the role of nitroxidative species in pain through a discussion of their contributions to central sensitization and the underlying mechanisms. Future directions for nitroxidative pain research are also addressed. As more selective pharmacologic agents are developed to target nitroxidative species, the exact role of nitroxidative species in pain states will be better characterized and should offer promising alternatives to available pain management options.
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Greco R, Gasperi V, Sandrini G, Bagetta G, Nappi G, Maccarrone M, Tassorelli C. Alterations of the endocannabinoid system in an animal model of migraine: evaluation in cerebral areas of rat. Cephalalgia 2010; 30:296-302. [PMID: 19515121 DOI: 10.1111/j.1468-2982.2009.01924.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Endocannabinoids are involved in the modulation of pain and hyperalgesia. In this study we investigated the role of the endocannabinoid system in the migraine model based on nitroglycerin-induced hyperalgesia in the rat. Male rats were injected with nitroglycerin (10 mg/kg, i.p.) or vehicle and sacrificed 4 h later. The medulla, the mesencephalon and the hypothalamus were dissected out and utilized for the evaluation of activity of fatty acid amide hydrolase (that degrades the endocannabinoid anandamide), monoacylglycerol lipase (that degrades the endocannabinoid 2-arachidonoylglycerol), and binding sites specific for cannabinoid (CB) receptors. The findings obtained show that nitroglycerin-induced hyperalgesia is associated with increased activity of both hydrolases and increased density of CB binding sites in the mesencephalon. In the hypothalamus we observed an increase in the activity of fatty acid amide hydrolase associated with an increase in density of CB binding sites, while in the medulla only the activity of fatty acid amide hydrolase was increased. Anandamide also proved effective in preventing nitroglycerin-induced activation (c-Fos) of neurons in the nucleus trigeminalis caudalis. These data strongly support the involvement of the endocannabinoid system in the modulation of nitroglycerin-induced hyperalgesia, and, possibly, in the pathophysiological mechanisms of migraine.
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Affiliation(s)
- R Greco
- IRCCS Neurological Institute C Mondino Foundation, University of Pavia, Pavia, Italy
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Leánez S, Hervera A, Pol O. Peripheral antinociceptive effects of µ- and δ-opioid receptor agonists in NOS2 and NOS1 knockout mice during chronic inflammatory pain. Eur J Pharmacol 2009; 602:41-9. [DOI: 10.1016/j.ejphar.2008.11.019] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Revised: 10/27/2008] [Accepted: 11/10/2008] [Indexed: 10/21/2022]
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Pessini AC, Kanashiro A, Malvar DDC, Machado RR, Soares DM, Figueiredo MJ, Kalapothakis E, Souza GE. Inflammatory mediators involved in the nociceptive and oedematogenic responses induced by Tityus serrulatus scorpion venom injected into rat paws. Toxicon 2008; 52:729-36. [DOI: 10.1016/j.toxicon.2008.08.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 08/26/2008] [Accepted: 08/27/2008] [Indexed: 02/05/2023]
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Greco R, Tassorelli C, Armentero MT, Sandrini G, Nappi G, Blandini F. Role of central dopaminergic circuitry in pain processing and nitroglycerin-induced hyperalgesia. Brain Res 2008; 1238:215-23. [PMID: 18761334 DOI: 10.1016/j.brainres.2008.08.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2008] [Revised: 07/31/2008] [Accepted: 08/01/2008] [Indexed: 01/12/2023]
Abstract
Experimental evidence shows that dopaminergic transmission within the basal ganglia is involved in the modulation of nociceptive information. Epidemiological studies show that in some disease states inherent pathophysiological mechanisms that involve degenerative changes (Parkinson's disease; PD) can also impact negatively on other unrelated functional systems (i.e. nociception). Delayed Fos expression in response to nitroglycerin (NTG) administration is a procedure used to identify the neuroanatomical substrates of the migraine condition. In this study, we investigated the influence of dopaminergic nigrostriatal denervation, obtained by intrastriatal injection of 6-hydroxydopamine (6-OHDA), on this response in Sprague-Dawley rats. We also explored the effects on the NTG-induced hyperalgesic response to painful stimuli (formalin and tail-flick tests). Nigrostriatal lesion prevented the neuronal activation typically induced by NTG in sub-cortical areas involved in pain perception, autonomic control and neuroendocrine functions, such as hypothalamic nuclei, periaqueductal grey, parabrachial nucleus and the medullary nuclei. In addition, 6-OHDA-induced lesion inhibited NTG-induced hyperalgesia. Our data show that integrity of central dopaminergic neurotransmission is required for the NTG-induced activation of sub-cortical areas involved in the expression of migraine symptoms, as well as for the hyperalgesic response to painful stimuli elicited by the drug.
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Affiliation(s)
- Rosaria Greco
- Interdepartmental Research Center for Parkinson's Disease, IRCCS Neurological Institute C Mondino, Pavia, Italy
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Ndengele MM, Cuzzocrea S, Esposito E, Mazzon E, Di Paola R, Matuschak GM, Salvemini D. Cyclooxygenases 1 and 2 contribute to peroxynitrite-mediated inflammatory pain hypersensitivity. FASEB J 2008; 22:3154-64. [PMID: 18497304 DOI: 10.1096/fj.08-108159] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Peroxynitrite (ONOO(-)), the reaction product of the interaction between superoxide (O(2)(*-)) and nitric oxide (*NO), is a potent proinflammatory and cytotoxic nitrooxidative species. Its role as a mediator of hyperalgesia (clinically defined as an augmented sensitivity to painful stimuli) is not known. In light of the known proinflammatory properties of ONOO(-), our study addressed its potential involvement in the development of hyperalgesia associated with tissue damage and inflammation. Intraplantar injection in rats of the ONOO(-) precursor O(2)(*-) (1 microM) led to the development of thermal hyperalgesia associated with a profound localized inflammatory response. Both events were blocked by L-NAME (N(G)-nitro-L-arginine methyl ester, 3-30 mg/kg), a nitric oxide synthase inhibitor, or by FeTM-4-PyP(5+) [Fe(III)5,10,15,20-tetrakis(N-methylpyridinium-4-yl)porphyrin, 3-30 mg/kg], an ONOO(-) decomposition catalyst. These results suggested that locally synthesized ONOO(-) produced in situ by O(2)(*-) and *NO is key in the development of inflammatory hyperalgesia. The direct link between ONOO(-) and hyperalgesia was further supported by demonstrating that intraplantar injection of soluble ONOO(-) itself (1 microM) similarly led to inflammatory hyperalgesia. ONOO(-) generated by the interaction between exogenous administration of O(2)(*-) and endogenous *NO, or provided by direct injection of ONOO(-), activated the transcription factor NF-kappaB in paw tissues, enhancing expression of the inducible but not the constitutive cyclooxygenase enzyme (COX-2 and COX-1, respectively). ONOO(-)-mediated hyperalgesia was blocked in a dose-dependent manner by intraperitoneal injections of indomethacin (10 mg/kg), a nonselective COX-1/COX-2 inhibitor, or NS398 [N-(2-cyclohexyloxy-4-nitrophenyl)methanesulfonamide; 10 mg/kg] a selective COX-2 inhibitor, as well as by an anti-prostaglandin (PG) E(2) antibody (200 microg). In another established model of inflammation-related hyperalgesia by intraplantar injection of carrageenan in rats, inhibition of ONOO(-) with FeTM-4-PyP(5+) (3-30 mg/kg) inhibited the development of hyperalgesia and the release of PGE(2) in paw tissue exudates. Furthermore, FeTM-4-PyP(5+) synergized with indomethacin and NS397 (1-10 mg/kg) to block both hyperalgesia and edema. Taken together, these data show for the first time that ONOO(-) is a potent mediator of inflammation-derived hyperalgesia operating via the COX-to-PGE(2) pathway. These results provide a pharmacological rationale for the development of inhibitors of peroxynitrite biosynthesis as novel nonnarcotic analgesics. The broad implications of our study are that dual inhibition of both ONOO(-) formation and COX activity may provide an alternative therapeutic approach to the management of pain: effective analgesia with reduced side-effects typically associated with the use of COX inhibitors.
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Affiliation(s)
- Michael M Ndengele
- Department of Internal Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, 1402 S. Grand Blvd., Deslodge Towers, 7th Floor, Saint Louis University School of Medicine, St. Louis, MO 63104-1028, USA
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de Albuquerque RF, Aparecida Del Bel E, Brentegani LG, Moura de Oliveira MT, Mardegan Issa JP. Trigeminal nitric oxide synthase expression correlates with new bone formation during distraction osteogenesis. Calcif Tissue Int 2008; 82:309-15. [PMID: 18330484 DOI: 10.1007/s00223-008-9107-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2007] [Accepted: 01/18/2008] [Indexed: 01/18/2023]
Abstract
Nitric oxide synthase (NOS) has been reported to be involved with both bone healing and bone metabolism. The aim of this study was to test the null hypothesis that there is no correlation between new bone formation during mandibular distraction osteogenesis and NOS expression in the trigeminal ganglion of rats. Newly formed tissue during distraction osteogenesis and trigeminal NOS expression measured by the NADPH-diaphorase (NADPH-d) reaction were evaluated in 72 male Wistar rats by histomorphometric and histochemical methods. In animals submitted to 0.5 mm/day distraction osteogenesis, the percentage of bone tissue was higher in the basal area of the mandibles compared with the center and significantly increased through the experimental periods (P < 0.05). At the sixth postoperative week, the difference in bone formation between the continuous and acute distraction osteogenesis groups was the highest. Significant correlation between new bone formation by distraction osteogenesis and NADPH-d-reactive neurons was found, varying according to neuronal cell size (r = -0.6, P = 0.005, small cells strongly stained; r = 0.5, P = 0.018, large cells moderately stained). The results suggest that NOS may play a role in the bone healing process via neurogenic pathways, and the phenomenon seems to be neuronal cell morphotype-dependent. Further studies are now warranted to investigate the mechanistic link between the expression of trigeminal NOS and mandibular new bone formation by distraction osteogenesis.
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Affiliation(s)
- Rubens Ferreira de Albuquerque
- Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Av. Café S/N, CEP 14040-904, Ribeirão Preto, São Paulo, Brazil.
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Tassorelli C, Armentero MT, Greco R, Fancellu R, Sandrini G, Nappi G, Blandini F. Behavioral responses and Fos activation following painful stimuli in a rodent model of Parkinson's disease. Brain Res 2007; 1176:53-61. [PMID: 17884026 DOI: 10.1016/j.brainres.2007.08.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Revised: 08/06/2007] [Accepted: 08/07/2007] [Indexed: 11/21/2022]
Abstract
In Parkinson's disease (PD), the motor dysfunction caused by degeneration of the nigrostriatal pathway is often associated with alterations of pain perception. This is likely related to the role that the nigrostriatal system may play in the processing of noxious, somatosensory stimuli. To further address this issue, we used a rodent model of PD, based on the unilateral, intrastriatal injection of neurotoxin 6-hydroxydopamine (6-OHDA). We investigated the effects of the nigrostriatal lesion on behavioral responses to pain tests designed to explore different aspects of nociception, such as the formalin test and the tail flick test; we also explored modifications in the expression of Fos protein, a marker of neuronal activation, in supraspinal nuclei involved in the integration of pain perception and stress-related behavior. Rats bearing the nigrostriatal lesion showed complex alterations in pain perception, including hyperalgesic responses to the tonic, inflammatory pain elicited by formalin injection, but only when the stimulus was delivered ipsilaterally to the lesion. This phenomenon was associated with delayed responses to the phasic, thermal stimulus induced by the tail flick test. The hyperalgesic response to the formalin test was accompanied by reduced Fos expression in the paraventricular nucleus of the hypothalamus, which is part of a network (the medial pain system) that mediates motivational-affective aspects of pain. Our results confirm that a unilateral alteration of central dopaminergic transmission disrupts the neural mechanisms underlying proper integration of painful stimuli, particularly in the hemibody ipsilateral to the dopaminergic denervation.
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Affiliation(s)
- Cristina Tassorelli
- Laboratory of Pathophysiology of Integrative Autonomic Systems, Neurological Institute C Mondino, Pavia, Italy
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Empl M, Straube A. Entzündliche Erkrankungen des ZNS sowie immunmodulatorische Therapie und ihr Einfluss auf primäre Kopfschmerzen. Schmerz 2007; 21:415-23. [PMID: 17265016 DOI: 10.1007/s00482-006-0520-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Headaches are a well known symptom in systemic or local inflammatory diseases such as pneumonia or meningitis. These headaches may mimic primary headaches and are thought to be generated by inflammatory mediators acting directly on nociceptors or indirectly - via facilitation of neurons. Apart from prostaglandin and nitric oxide also cytokines (TNF-alpha or interleukin-6) may play a role. In primary headaches such as migraine inflammatory mechanisms also have been acclaimed to contribute to pain generation. The recently observed increase of migraine attacks under immunmodulatory therapy in multiple sclerosis has focussed attention on primary headaches in states of altered immunity, for instance in autoimmune disorders like lupus erythematosus, rheumatoid arthritis, or in patients treated with immunosuppressants. This article describes the standard of knowledge and tries to shed light on possible mechanisms of pain generation in the respective conditions.
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Affiliation(s)
- M Empl
- Neurologische Klinik und Poliklinik, Klinikum Grosshadern der Ludwig-Maximilians-Universität München, Marchioninistr. 15, 81377 München.
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Tassorelli C, Greco R, Armentero MT, Blandini F, Sandrini G, Nappi G. A role for brain cyclooxygenase-2 and prostaglandin-E2 in migraine: effects of nitroglycerin. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2007; 82:373-82. [PMID: 17678972 DOI: 10.1016/s0074-7742(07)82020-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cyclooxygenase-2 (COX-2) may increase prostaglandin E(2) (PGE(2)) production in central nervous system (CNS) and contribute to the severity of pain responses in inflammatory pain. In this chapter, we sought to evaluate the possible role of COX-2 induction and prostaglandins (PGs) synthesis within neuronal areas proposed to be involved in migraine genesis in the animal model of migraine based on the administration of systemic nitroglycerin (NTG). Male Sprague-Dawley rats were injected with NTG (10mg/kg, i.p.) or vehicle and sacrificed 2 and 4h later. The hypothalamus and the lower brain stem were dissected out and utilized for the evaluation of COX-2 expression by means of Western blotting and for the determination of PGE(2) levels by means of ELISA immunoassay. COX-2 expression increased in the hypothalamus at 2h and in the lower brain stem at 4h. PGE(2) levels showed an opposite pattern of change with a decrease in PGE(2) levels at 2h in the hypothalamus and an increase at 4h in the lower brain stem. These data support the hypothesis that NTG administration is capable of activating the COX-2 pathway within cerebral areas. This activity may explain the pronociceptive effect of NTG described in animal and human models of pain. Most importantly, these findings point to mediators and areas that may be relevant for migraine pathogenesis and treatment.
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