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Lima LM, da Silva TF, da Silva Monteiro CE, Aparecida-Silva C, Bispo Júnior W, de Queiroz AC, Alexandre-Moreira MS, Zapata-Sudo G, Barreiro EJ. Design and Synthesis In Silico Drug-like Prediction and Pharmacological Evaluation of Cyclopolymethylenic Homologous of LASSBio-1514. Molecules 2021; 26:4828. [PMID: 34443416 PMCID: PMC8399892 DOI: 10.3390/molecules26164828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 12/03/2022] Open
Abstract
Acylhydrazones are still an important framework to the design of new bioactive compounds. As treatment of chronic pain represents a clinical challenge, we decided to modify the structure of LASSBio-1514 (1), previously described as anti-inflammatory and analgesic prototype. Applying the homologation as a strategy for molecular modification, we designed a series of cyclopentyl- (2a-e), cyclobutyl- (3a-e), and cyclopropylacylhydrazones (4a-e) that were synthetized and evaluated in murine models of inflammation and pain. A comparison of their in silico physicochemical and drug-like profile was conducted, as well as their anti-inflammatory and analgesic effect. Compounds 4a (LASSBio-1755) and 4e (LASSBio-1757) displayed excellent in silico drug-like profiles and were identified as new analgesic lead-candidates in acute and chronic model of pain, through oral administration.
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Affiliation(s)
- Lidia Moreira Lima
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto Nacional de Ciência e Tecnologia de Fármacos e Medicamentos (INCT-INOFAR), Universidade Federal do Rio de Janeiro, CCS, Cidade Universitária, Rio de Janeiro 21941-971, RJ, Brazil; (T.F.d.S.); (C.A.-S.)
- Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (C.E.d.S.M.); (G.Z.-S.)
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, RJ, Brazil
| | - Tiago Fernandes da Silva
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto Nacional de Ciência e Tecnologia de Fármacos e Medicamentos (INCT-INOFAR), Universidade Federal do Rio de Janeiro, CCS, Cidade Universitária, Rio de Janeiro 21941-971, RJ, Brazil; (T.F.d.S.); (C.A.-S.)
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, RJ, Brazil
| | - Carlos Eduardo da Silva Monteiro
- Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (C.E.d.S.M.); (G.Z.-S.)
- Laboratório de Farmacologia Cardiovascular, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-971, RJ, Brazil
| | - Cristiane Aparecida-Silva
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto Nacional de Ciência e Tecnologia de Fármacos e Medicamentos (INCT-INOFAR), Universidade Federal do Rio de Janeiro, CCS, Cidade Universitária, Rio de Janeiro 21941-971, RJ, Brazil; (T.F.d.S.); (C.A.-S.)
- Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (C.E.d.S.M.); (G.Z.-S.)
| | - Walfrido Bispo Júnior
- LaFI—Laboratório de Farmacologia e Imunidade, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió 57072-900, AL, Brazil; (W.B.J.); (A.C.d.Q.); (M.S.A.-M.)
| | - Aline Cavalcanti de Queiroz
- LaFI—Laboratório de Farmacologia e Imunidade, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió 57072-900, AL, Brazil; (W.B.J.); (A.C.d.Q.); (M.S.A.-M.)
| | - Magna Suzana Alexandre-Moreira
- LaFI—Laboratório de Farmacologia e Imunidade, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió 57072-900, AL, Brazil; (W.B.J.); (A.C.d.Q.); (M.S.A.-M.)
| | - Gisele Zapata-Sudo
- Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (C.E.d.S.M.); (G.Z.-S.)
- Laboratório de Farmacologia Cardiovascular, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-971, RJ, Brazil
| | - Eliezer J. Barreiro
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto Nacional de Ciência e Tecnologia de Fármacos e Medicamentos (INCT-INOFAR), Universidade Federal do Rio de Janeiro, CCS, Cidade Universitária, Rio de Janeiro 21941-971, RJ, Brazil; (T.F.d.S.); (C.A.-S.)
- Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil; (C.E.d.S.M.); (G.Z.-S.)
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, RJ, Brazil
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Magalhães DDA, Batista JA, Sousa SG, Ferreira JDS, da Rocha Rodrigues L, Pereira CMC, do Nascimento Lima JV, de Albuquerque IF, Bezerra NLSD, Monteiro CEDS, Franco AX, da Costa Filho HB, Ferreira FCS, Havt A, Di Lenardo D, Vasconcelos DFP, de Oliveira JS, Soares PMG, Barbosa ALDR. McN-A-343, a muscarinic agonist, reduces inflammation and oxidative stress in an experimental model of ulcerative colitis. Life Sci 2021; 272:119194. [PMID: 33609541 DOI: 10.1016/j.lfs.2021.119194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/24/2021] [Accepted: 02/01/2021] [Indexed: 11/30/2022]
Abstract
AIM The aim of the present study was to investigate the anti-inflammatory response mediated of the M1 muscarinic acetylcholine receptor (mAChR) during experimental colitis. MATERIAL AND METHODS After the induction of 6% acetic acid colitis, mice were treated with McN-A-343 0.5, 1.0, and 1.5 mg/kg or dexamethasone (DEXA, 2.0 mg/kg) or pirenzepine (PIR, 10 mg/kg; M1 mAChR antagonist). Colonic inflammation was assessed by macroscopic and microscopic lesion scores, colonic wet weight, myeloperoxidase (MPO) activity, interleukin-1 beta (IL1-β) levels and tumor necrosis factor alpha (TNF-α), glutathione (GSH), malondialdehyde (MDA) and nitrate and nitrite (NO3/NO2), mRNA expression of IKKα, nuclear factor kappa beta (NF-kB) and cyclooxygenase-2 (COX-2), as well protein expression of NF-kB and COX-2. RESULTS Treatment with McN-A-343 at a concentration of 1.5 mg/kg showed a significant reduction in intestinal damage as well as a decrease in wet weight, MPO activity, pro-inflammatory cytokine concentration, markers of oxidative stress and expression of inflammatory mediators. The action of the M1 agonist by the administration of pirenzepine, which promoted the blocking of the mAChR M1-mediated anti-inflammatory response, has also been proven. CONCLUSION The results suggest that peripheral colonic M1 mAChR is involved in reversing the pro-inflammatory effect of experimentally induced colitis, which may represent a promising therapeutic alternative for patients with ulcerative colitis.
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Affiliation(s)
- Diva de Aguiar Magalhães
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil; The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil
| | - Jalles Arruda Batista
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil; The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil
| | - Stefany Guimarães Sousa
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil; The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil
| | - Jayro Dos Santos Ferreira
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil
| | | | | | | | | | | | | | - Alvaro Xavier Franco
- Laboratory of Physiopharmacology Study of Gastrointestinal Tract, LEFFAG, Federal University of Ceará, Fortaleza, Brazil
| | | | | | - Alexandre Havt
- Laboratory of Molecular Toxinology, LTM, Federal University of Ceará, Fortaleza, CE, Brazil
| | - David Di Lenardo
- Laboratory of Analysis and Histological Processing, LAPHIS, Department of Biomedicine, Federal University of Piauí, Parnaíba, Brazil
| | - Daniel Fernando Pereira Vasconcelos
- The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil; Laboratory of Analysis and Histological Processing, LAPHIS, Department of Biomedicine, Federal University of Piauí, Parnaíba, Brazil
| | - Jefferson Soares de Oliveira
- The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil; Biochemistry Laboratory of Laticifers Plants (LABPL), Department of Biomedicine, Federal University of Piauí, Parnaíba, Brazil
| | - Pedro Marcos Gomes Soares
- Laboratory of Physiopharmacology Study of Gastrointestinal Tract, LEFFAG, Federal University of Ceará, Fortaleza, Brazil
| | - André Luiz Dos Reis Barbosa
- Laboratory of Experimental Physiopharmacology, LAFFEX, Federal University of Piauí, Parnaíba, Brazil; The Northeast Biotechnology Network, Federal University of Piauí, Teresina, Brazil.
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Modulation of COX-2, INF-ɣ, glutamatergic and opioid systems contributes to antinociceptive, anti-inflammatory and anti-hyperalgesic effects of bis(3-amino-2-pyridine) diselenide. Chem Biol Interact 2019; 311:108790. [DOI: 10.1016/j.cbi.2019.108790] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/23/2019] [Accepted: 08/07/2019] [Indexed: 02/07/2023]
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Sudo RT, do Amaral RV, Monteiro CEDS, Pitta IDR, Lima MDC, Montes GC, Ririe DG, Hayashida K, Zapata-Sudo G. Antinociception induced by a novel α 2A adrenergic receptor agonist in rodents acute and chronic pain models. Eur J Pharmacol 2017; 815:210-218. [PMID: 28935564 DOI: 10.1016/j.ejphar.2017.09.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 09/06/2017] [Accepted: 09/14/2017] [Indexed: 01/05/2023]
Abstract
The mechanisms and antinociceptive effects of a novel α2A adrenoceptor agonist, 3-(2-chloro-6-fluorobenzil)-imidazolinide-2,4-dione (PT-31) were investigated using animal models of acute and chronic pain. The effects of PT-31 on pain responses were examined using hot plate and formalin tests in mice and spinal nerve ligation (SNL)-induced hyperalgesia in rats. The effects of antagonists acting on α adrenoceptor were assessed to investigate the interaction of these pathways upon PT-31 induced antinociception. PT-31 effects on motor activity/skills and on hemodynamic parameters were also evaluated. PT-31 had dose-dependent antinociception effects on hot-plate and formalin-injection induced pain responses. Thermal hyperalgesia and mechanical allodynia were reduced following a 7 d treatment with PT-31 (1, 5, and 10mg/kg/d, p.o.), and those effects were attenuated by yohimbine (5mg/kg), atropine (2mg/kg), L-nitro arginine methyl ester (L-NAME; 30mg/kg), or naloxone (2mg/kg). In contrast to clonidine, PT-31 did not have locomotor or hemodynamic effects in rats. The present results suggest that PT-31 represents a candidate for pain treatment with advantages over clonidine, namely no locomotor or hemodynamic impairments.
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Affiliation(s)
- Roberto Takashi Sudo
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil.
| | - Rachel Vieiralves do Amaral
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Carlos Eduardo da Silva Monteiro
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Ivan da Rocha Pitta
- Núcleo de Pesquisa em Inovação Terapêutica, Universidade Federal de Pernambuco, PE, Brazil
| | - Maria do Carmo Lima
- Núcleo de Pesquisa em Inovação Terapêutica, Universidade Federal de Pernambuco, PE, Brazil
| | - Guilherme Carneiro Montes
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Douglas Gordon Ririe
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Kenichiro Hayashida
- Department of Neurophysiology, Akita University School of Medicine, Akita, Japan
| | - Gisele Zapata-Sudo
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil
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Montes GC, da Silva BNM, Rezende B, Sudo RT, Ferreira VF, de Carvalho da Silva F, da Cunha Pinto A, da Silva BV, Zapata-Sudo G. The Hypnotic, Anxiolytic, and Antinociceptive Profile of a Novel µ-Opioid Agonist. Molecules 2017; 22:molecules22050800. [PMID: 28509855 PMCID: PMC6154531 DOI: 10.3390/molecules22050800] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 04/17/2017] [Accepted: 04/26/2017] [Indexed: 01/09/2023] Open
Abstract
5'-4-Alkyl/aryl-1H-1,2,3-triazole derivatives PILAB 1-12 were synthesized and a pharmacological screening of these derivatives was performed to identify a possible effect on the Central Nervous System (CNS) and to explore the associated mechanisms of action. The mice received a peritoneal injection (100 µmol/kg) of each of the 12 PILAB derivatives 10 min prior to the injection of pentobarbital and the mean hypnosis times were recorded. The mean hypnosis time increased for the mice treated with PILAB 8, which was prevented when mice were administered CTOP, a µ-opioid antagonist. Locomotor and motor activities were not affected by PILAB 8. The anxiolytic effect of PILAB 8 was evaluated next in an elevated-plus maze apparatus. PILAB 8 and midazolam increased a percentage of entries and spent time in the open arms of the apparatus compared with the control group. Conversely, a decrease in the percentages of entries and time spent in the closed arms were observed. Pretreatment with naloxone, a non-specific opioid antagonist, prior to administration of PILAB 8 exhibited a reverted anxiolytic effect. PILAB 8 exhibited antinociceptive activity in the hot plate test, and reduced reactivity to formalin in the neurogenic and the inflammatory phases. These data suggest that PILAB 8 can activate µ-opioid receptors to provoke antinociceptive and anti-inflammatory effects in mice.
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Affiliation(s)
- Guilherme Carneiro Montes
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ 21941-902, Brazil.
| | | | - Bismarck Rezende
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ 21941-902, Brazil.
| | - Roberto Takashi Sudo
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ 21941-902, Brazil.
- Instituto Nacional de Ciência e Tecnologia de Fármacos e Medicamentos (INCT-INOFAR), Rio de Janeiro RJ 21941-971, Brazil.
| | | | | | - Angelo da Cunha Pinto
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ 21941-909, Brazil.
- Instituto Nacional de Ciência e Tecnologia de Fármacos e Medicamentos (INCT-INOFAR), Rio de Janeiro RJ 21941-971, Brazil.
| | | | - Gisele Zapata-Sudo
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ 21941-902, Brazil.
- Instituto Nacional de Ciência e Tecnologia de Fármacos e Medicamentos (INCT-INOFAR), Rio de Janeiro RJ 21941-971, Brazil.
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Montes GC, Hammes N, da Rocha MD, Montagnoli TL, Fraga CAM, Barreiro EJ, Sudo RT, Zapata-Sudo G. Treatment with Adenosine Receptor Agonist Ameliorates Pain Induced by Acute and Chronic Inflammation. ACTA ACUST UNITED AC 2016; 358:315-23. [DOI: 10.1124/jpet.115.231241] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 05/17/2016] [Indexed: 12/28/2022]
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Yen WP, Liu PL, Uramaru N, Lin HY, Wong FF. Indium(III) chloride/silica gel catalyzed synthesis of pyrazolo[3,4- b ]pyrrolo[3,4- d ]pyridines. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.09.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Sudo RT, Neto ML, Monteiro CE, Amaral RV, Resende ÂC, Souza PJ, Zapata-Sudo G, Moura RS. Antinociceptive effects of hydroalcoholic extract from Euterpe oleracea Mart. (Açaí) in a rodent model of acute and neuropathic pain. Altern Ther Health Med 2015; 15:208. [PMID: 26134625 PMCID: PMC4489033 DOI: 10.1186/s12906-015-0724-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 06/15/2015] [Indexed: 11/10/2022]
Abstract
Background Plants rich in flavonoids, such as açaí (Euterpe oleraceae Mart.), can induce antinociception in experimental animals. Here, we tested an extract obtained from the stones of açaí fruits (açaí stone extract, ASE), a native plant from the Amazon region of Brazil, in models of acute/inflammatory and chronic pain. Methods Antinociceptive effects of ASE were evaluated in the hot plate, formalin, acetic acid writhing, carrageenan, and neuropathic pain models, as well as in thermal hyperalgesia and mechanical allodynia models induced by spinal nerve ligation. Antinociceptive activities were modulated by the administration of cholinergic, adrenergic, opioid, and L-arginine-NO antagonists. Results Oral administration of ASE (30, 100, or 300 mg.kg−1) dose-dependently reduced nociceptive responses to acute/inflammatory pain in mice, including thermal hyperalgesia, acetic acid-induced writhing, and carrageenan-induced thermal hyperalgesia. Moreover, ASE reduced the neurogenic and inflammatory phases after intraplantar injection of formalin in mice. The antinociceptive effect of ASE (100 mg · kg−1) in a hot plate protocol, was inhibited by pre-treatment with naloxone (1 mg · kg−1), atropine (2 mg · kg−1), yohimbine (5 mg · kg−1), or L-NAME (30 mg · kg−1). Furthermore, ASE prevented chronic pain in a rat spinal nerve ligation model, including thermal hyperalgesia and mechanical allodynia. Conclusion ASE showed significant antinociceptive effect via a multifactorial mechanism of action, indicating that the extract may be useful in the development of new analgesic drugs.
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Kaur N. Application of Microwave Irradiation in the Synthesis of Fused Six-Membered Heterocycles with N-Heteroatom. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.816734] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- a Department of Chemistry , Banasthali University , Banasthali , Rajasthan , India
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Wang LY, Uramaru N, Wong FF. Synthesis of pyrazolo[3,4-b]pyrrolo[3,4-d]pyridine derivatives via Aza-Diels–Alder reaction: evaluation of torsion effect of pyrazoylimines. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Mendes TCF, Antunes F, Trachez MM, Nascimento NM, Fraga CAM, Barreiro EJ, Zapata-Sudo G, Sudo RT. Antihyperalgesic effects of a novel muscarinic agonist (LASSBio-873) in spinal nerve ligation in rats. Clin Exp Pharmacol Physiol 2014; 40:404-11. [PMID: 23573962 DOI: 10.1111/1440-1681.12090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 03/27/2013] [Accepted: 04/04/2013] [Indexed: 01/06/2023]
Abstract
New chemicals or adjuvants with analgesic effects on chronic pain are needed and clinically relevant due to the limited number of effective compounds that possess these characteristics. LASSBio-873, a pyrazolo[3,4-b]pyrrolo[3,4-d]pyridine derivative, activates muscarinic cholinergic receptors and has potent analgesic effects on acute and inflammatory pain. The present study evaluated the therapeutic and prophylactic effects of oral administration of LASSBio-873 in a spinal nerve ligation (SNL) model of chronic peripheral nerve injury. LASSBio-873 (100 mg/kg) inhibited the development of thermal hyperalgesia and mechanical allodynia when administered once daily for 7 consecutive days after SNL surgery and reversed these symptoms. LASSBio-873 treatment did not alter rat behaviour in open field testing measured during the first 24 h after administration and again after 7 continuous days administration. The analgesic effect of LASSBio-873 was inhibited by intrathecal methoctramine, an M2 receptor antagonist, implicating the muscarininc M2 receptor signalling pathway in the drug's action. These results reinforce the potential of LASSBio-873 as a possible prototype for the development of more effective alternatives for the treatment of neuropathic pain.
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Affiliation(s)
- Thaiana C F Mendes
- Program of Drug Development, Institute of Biomedical Science, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Anzoise ML, Marrassini C, Ferraro G, Gorzalczany S. Hydroalcoholic extract of Urtica circularis: a neuropharmacological profile. PHARMACEUTICAL BIOLOGY 2013; 51:1236-1242. [PMID: 23870059 DOI: 10.3109/13880209.2013.785574] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
CONTEXT The genus Urtica has been known since ancient times. It has known to be useful for the treatment of different human ailments. OBJECTIVE The present work evaluated the neuropharmacological effects of a hydroalcoholic extract of Urtica circularis (Hicken) Sorarú (Urticaceae). materials and method: The effect on central nervous system of U. circularis hydroalcoholic extract (from leaves and stems) administered by the intraperitoneal route in mice was evaluated by several tests: Pentobarbital- and midazolam-induced hypnosis, open field, hole board, elevated plus-maze and forced swimming. Phytochemical analysis was performed by high-performance liquid chromatography. RESULTS A total of 300 mg/kg i.p. of the extract produced a significant prolongation of pentobarbital- (40 mg/kg i.p.; 60.1 min versus 25.4 min) and midazolam- (50 mg/kg i.v.; 53.4 min versus 25.1 min) induced sleeping time. The extract's administration caused a marked reduction of the head-dipping response (DE50: 373 mg/kg i.p.) in the hole-board test. Urtica circularis extract (DE50: 46 mg/kg i.p.) reduced the spontaneous locomotor activity in the open field test. Flumazenil and atropine significantly antagonized the extract's effect on the locomotor activity. No motor coordination disturbance was observed in the rota rod test at any doses. In the forced swimming test, the extract did not produce any change in the immobility time and it had no significant effects in elevated plus maze test. The phytochemical analysis revealed the presence of chlorogenic acid, vanillic acid, caffeic acid, vicenin-2, p-cumaric acid, ferulic acid, vitexin and isovitexin. CONCLUSION This study revealed that U. circularis hydroalcoholic extract possesses sedative activity, facilitating GABAergic and cholinergic transmission.
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Affiliation(s)
- María Laura Anzoise
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
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Deng L, Guindon J. Muscarinic agonists in the treatment of neuropathic pain: a novel finding. Clin Exp Pharmacol Physiol 2013; 40:395-7. [DOI: 10.1111/1440-1681.12123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Josée Guindon
- Department of Psychological and Brain Sciences; Indiana University; Bloomington; IN; USA
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Can OD, Ozkay UD. Effects of Hypericum montbretti extract on the central nervous system and involvement of GABA (A)/Benzodiazepine receptors in its pharmacological activity. Phytother Res 2012; 26:1695-700. [PMID: 22395896 DOI: 10.1002/ptr.4629] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 01/20/2012] [Accepted: 01/23/2012] [Indexed: 01/12/2023]
Abstract
The present study was undertaken to investigate the putative activity of a methanol extract of Hypericum montbretti (Guttiferae) on the central nervous system. Rutin (1519 ppm) and quercitrin (784 ppm) were identified as the major phenolic compounds in the extract. When administered at 25, 50 and 100 mg/kg doses, the extract decreased the total number of head-dipping behaviours performed by mice during a hole-board test. Administration of both the extract and diazepam (2 mg/kg) reduced spontaneous locomotory activity, potentiated hexobarbital (60 mg/kg)-induced sleeping parameters and prevented pentylenetetrazole (80 mg/kg)-induced seizures relative to the controls. These findings are the first to indicate the sedative and anticonvulsant activities of H. montbretti extract. Atropine (2 mg/kg) and naloxone (5 mg/kg) pre-treatment did not reverse the sedative effect, indicating that muscarinic and opioidergic mechanisms did not contribute to the pharmacological action. However, pre-treatment with flumazenil (a benzodiazepine receptor antagonist) reversed both the sedative and anticonvulsant effects induced by a 100 mg/kg dose of the extract, indicating the involvement of the GABA(A)-benzodiazepine receptor complex. In conclusion, H. montbretti extract is a novel candidate as a sedative and anticonvulsant drug for the treatment of sleep disorders and for the prevention of epileptic seizures.
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Affiliation(s)
- Ozgür Devrim Can
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, 26470, Eskisehir, Turkey.
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MAOS and medicinal chemistry: some important examples from the last years. Molecules 2011; 16:9274-97. [PMID: 22064269 PMCID: PMC6264757 DOI: 10.3390/molecules16119274] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Revised: 10/17/2011] [Accepted: 10/26/2011] [Indexed: 11/16/2022] Open
Abstract
This review aims to highlight microwave-assisted organic synthesis as applied to medicinal chemistry in the last years, showing some reactions performed under microwave irradiation for the synthesis of distinct structurally molecules of biological interest, divided into the following groups: antineoplastics, anti-inflammatory, antimicrobial agents, antivirals, agents for the treatment of neglected diseases and central nervous system-acting prototypes.
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Nascimento-Júnior NM, Mendes TCF, Leal DM, Corrêa CMN, Sudo RT, Zapata-Sudo G, Barreiro EJ, Fraga CAM. Microwave-assisted synthesis and structure-activity relationships of neuroactive pyrazolo[3,4-b]pyrrolo[3,4-d]pyridine derivatives. Bioorg Med Chem Lett 2009; 20:74-7. [PMID: 19963376 DOI: 10.1016/j.bmcl.2009.11.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2009] [Revised: 11/07/2009] [Accepted: 11/10/2009] [Indexed: 10/20/2022]
Abstract
We described herein the optimization of the synthetic methodology exploited to obtain the pyrazolo[3,4-b]pyrrolo[3,4-d]pyridine sedative prototype 1a and novel analogues designed by successive molecular simplifications. By applying microwave irradiation during the hetero Diels-Alder key-step to obtain the heterotricyclic scaffold, under solvent-free conditions, we were able to obtain the desired compounds in drastically shorter times and better yields. Additionally, in vivo evaluation of the sedative effects of these heterocyclic derivatives showed that 1a and the novel structurally-related analogue 1e were the most efficient compounds to impair the locomotor activity in mice at the dose of 10micromol/kg.
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Affiliation(s)
- Nailton M Nascimento-Júnior
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, PO Box 68023, Rio de Janeiro 21941-902, RJ, Brazil
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