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de Albuquerque Melo GM, Silva MCR, Guimarães TP, Pinheiro KM, da Matta CBB, de Queiroz AC, Pivatto M, Bolzani VDS, Alexandre-Moreira MS, Viegas C. Leishmanicidal activity of the crude extract, fractions and major piperidine alkaloids from the flowers of Senna spectabilis. Phytomedicine 2014; 21:277-281. [PMID: 24188737 DOI: 10.1016/j.phymed.2013.09.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 08/22/2013] [Accepted: 09/29/2013] [Indexed: 06/02/2023]
Abstract
Senna spectabilis (sin. Cassia excelsa, C. spectabilis) is an endemic tree of South America and Africa, very common in Brazil, where it is known as "canafistula-de-besouro" and "cassia-do-nordeste". In folk medicine, this plant is indicated for the treatment of constipation, insomnia, anxiety, epilepsy, malaria, dysentery and headache. Phytopharmacological studies have also confirmed anticonvulsive, sedative, anti-malarial, antimicrobial and cytotoxic properties of many parts of S. spectabilis. In this communication, we present a comparative study of the leishmanicidal activity of the crude ethanolic extract, its fractions and also the two major alkaloidal metabolites (-)-cassine/(-)-spectaline, trying to establish a relationship between the presence of piperidine alkaloidal constituents and leishmanicidal activity. The growth inhibitory effect of promastigote forms of Leishmania major was determined for the crude extract, fractions of the flowers of S. spectabilis and a mixture of (-)-cassine/(-)-spectaline in comparison to pentamidine used as standard drug. The cytotoxic effects were assessed on macrophage strain J774 by lactate dehydrogenase assay. Fractions dichloromethane (FL-DCM) and n-butanol (FL-Bu) and a mixture of (-)-cassine/(-)-spectaline (∼7:3) exhibited significant activity against the parasite Leishmania major (IC50 values of 0.6±0.1 μg/ml, 1.6±0.9 μg/ml and 24.9±1.4 μg/ml, respectively), without toxic effects on murine macrophages. Due to the promising results elicited, further studies in vivo need to be performed to confirm the therapeutic potential of Senna spectabilis.
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Affiliation(s)
| | - Marcela Campelo Rodrigues Silva
- Laboratório de Fitoquímica e Química Medicinal (LFQM), Instituto de Química, Universidade Federal de Alfenas, 37130-000 Alfenas, MG, Brazil
| | - Thaís Pereira Guimarães
- Laboratório de Fitoquímica e Química Medicinal (LFQM), Instituto de Química, Universidade Federal de Alfenas, 37130-000 Alfenas, MG, Brazil
| | - Kátia Mantovani Pinheiro
- Laboratório de Fitoquímica e Química Medicinal (LFQM), Instituto de Química, Universidade Federal de Alfenas, 37130-000 Alfenas, MG, Brazil
| | - Carolina Barbosa Brito da Matta
- Laboratório de Farmacologia e Imunidade, Centro de Ciências Biológicas, Universidade Federal de Alagoas, 57020-720 Maceió, AL, Brazil
| | - Aline Cavalcanti de Queiroz
- Laboratório de Farmacologia e Imunidade, Centro de Ciências Biológicas, Universidade Federal de Alagoas, 57020-720 Maceió, AL, Brazil
| | - Marcos Pivatto
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Instituto de Química, Universidade Estadual Paulista, 14801-970 Araraquara, São Paulo, Brazil
| | - Vanderlan da Silva Bolzani
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Instituto de Química, Universidade Estadual Paulista, 14801-970 Araraquara, São Paulo, Brazil
| | - Magna Suzana Alexandre-Moreira
- Laboratório de Farmacologia e Imunidade, Centro de Ciências Biológicas, Universidade Federal de Alagoas, 57020-720 Maceió, AL, Brazil.
| | - Claudio Viegas
- Laboratório de Fitoquímica e Química Medicinal (LFQM), Instituto de Química, Universidade Federal de Alfenas, 37130-000 Alfenas, MG, Brazil.
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de Queiroz AC, Alves HDS, Cavalcante-Silva LHA, Dias TDLMF, Santos MDS, Melo GMDA, Campesatto EA, Chaves MCDO, Alexandre-Moreira MS. Antinociceptive and anti-inflammatory effects of flavonoids PMT1 and PMT2 isolated from Piper montealegreanum Yuncker (Piperaceae) in mice. Nat Prod Res 2014; 28:403-6. [PMID: 24479832 DOI: 10.1080/14786419.2013.867444] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this study, we identified the antinociceptive and anti-inflammatory effects of two flavonoids (PMT1 and PMT2) from Piper montealegreanum. The antinociceptive effect was evaluated using the classical tests: acetic acid-induced writhing, formalin and hot plate test. PMT1 and PMT2 (0.1, 1, 30 and 100 μmol/kg, i.p.) reduced the writhings, with an ID50 of 0.58 and 0.44 μmol/kg, respectively. Moreover, these flavonoids (100 μmol/kg, i.p.) inhibited paw-licking time in the neurogenic phase of the formalin test, but only PMT2 was active in the inflammatory phase. However, PMT1 and PMT2 (100 μmol/kg, i.p.) did not increase the latency time of the animals in the hot plate. In order to evaluate the anti-inflammatory effect of these flavonoids, capsaicin-induced ear oedema was carried out. Both flavonoids (100 μmol/kg, i.p.) were active in this model. These results suggest that PMT1 and PMT2 have antinociceptive and anti-inflammatory activities.
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Affiliation(s)
- Aline Cavalcanti de Queiroz
- a Laboratório de Farmacologia e Imunidade, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas , Av. Lourival Melo Mota, s/n, Cidade Universitária, Maceió , AL , CEP: 57072-900 Brazil
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Barbosa MLDC, Melo GMDA, da Silva YKC, Lopes RDO, de Souza ET, de Queiroz AC, Smaniotto S, Alexandre-Moreira MS, Barreiro EJ, Lima LM. Synthesis and pharmacological evaluation of N-phenyl-acetamide sulfonamides designed as novel non-hepatotoxic analgesic candidates. Eur J Med Chem 2009; 44:3612-20. [PMID: 19327871 DOI: 10.1016/j.ejmech.2009.02.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Revised: 02/23/2009] [Accepted: 02/25/2009] [Indexed: 10/21/2022]
Abstract
In this paper we report the design, synthesis and pharmacological evaluation of a series of N-phenyl-acetamide sulfonamide derivatives (5a-g), planned by structural modification on the prototype paracetamol (1). In this series (5a-g), compound LASSBio-1300 (5e; ID(50)=5.81 micromol/kg) stands out as a new non-hepatotoxic analgesic drug candidate. The increase of area, volume and electrostatic potential of paracetamol's analogues seems to be beneficial to the analgesic activity. Unlike paracetamol (1) and the other analogues (5a, 5d-g), compounds 5b and 5c presented an important anti-hypernociceptive activity associated to inflammatory pain.
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Affiliation(s)
- Maria Letícia de Castro Barbosa
- Laboratório de Avaliação e Síntese de Substâncias Bioativas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, P.O. Box 68024, 21944-971 Rio de Janeiro, RJ, Brazil
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