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  1. Article: New 132-epi-Phaeophorbide a Ethyl Ester from Lantana camara

    Sousa, E. O / R. Braz-Filho / H. D. M. Coutinho / I. R. A. Menezes / F. F. G. Rodrigues / J. G. M. Costa

    Chemistry of natural compounds. 2018 Nov., v. 54, no. 6

    2018  

    Abstract: This study presents the isolation of a new compound from the Lantana genus: 13²-epi-phaeophorbide A ethyl ester (1). Its structure was established based on spectroscopic methods, mainly IR spectroscopy and 1D and 2D NMR, and comparison with literature ... ...

    Abstract This study presents the isolation of a new compound from the Lantana genus: 13²-epi-phaeophorbide A ethyl ester (1). Its structure was established based on spectroscopic methods, mainly IR spectroscopy and 1D and 2D NMR, and comparison with literature data.
    Keywords Lantana camara ; chemistry ; infrared spectroscopy ; nuclear magnetic resonance spectroscopy
    Language English
    Dates of publication 2018-11
    Size p. 1114-1117.
    Publishing place Springer US
    Document type Article
    ZDB-ID 213866-9
    ISSN 0009-3130
    ISSN 0009-3130
    DOI 10.1007/s10600-018-2567-9
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Pancratium triflorum Roxb. (Amaryllidaceae) and Molineria trichocarpa (Wight) N.P. Balakr (Hypoxidaceae): Cytotoxic and antioxidant activities

    Johnson, M / P. Maharaja / N. Janakiraman / G. Adaikala Raj / I.R.A. Menezes / J.G.M. da Costa / L.C.L. Verde / H.D.M. Coutinho

    Food and chemical toxicology. 2018 Sept., v. 119

    2018  

    Abstract: The present investigation was carried out to evaluate the antioxidant and cytotoxic activities of Pancratium triflorum Roxb and Molineria trichocarpa were collected from South Vagaikulam, Tirunelveli district, Tamil Nadu, India. The antioxidant ... ...

    Abstract The present investigation was carried out to evaluate the antioxidant and cytotoxic activities of Pancratium triflorum Roxb and Molineria trichocarpa were collected from South Vagaikulam, Tirunelveli district, Tamil Nadu, India. The antioxidant activities of P. triflorum extracts were as follows with the IC50 values methanol (228.13 μg/mL) > chloroform (311.33 μg/mL) > acetone (398.08 μg/mL) > petroleum ether (410.16 μg/mL). The antioxidant activities of P. triflorum and M. trichocarpa extracts were as follows with the IC50 values methanol (80.93 μg/mL) > acetone (98.02 μg/mL) > chloroform (186.84 μg/mL) > petroleum ether (209.64 μg/mL). Among the various extracts of P. triflorum, methanolic extracts showed the strongest phosphomolybdenum reduction (140.56 g AA/100 g). Among the tested extracts, acetone extracts of M. trichocarpa showed maximum inhibition with 71.36 ± 5.86%. In P. triflorum, chloroform extracts showed maximum inhibition (69.51%). The petroleum ether extract of M. trichocarpa was found to be most effective at which 50% mortality (LC50) and 90% mortality (LC90) of brine shrimp nauplii were found to be 29.22 and 184.82 mg/mL. This study results revealed the antioxidant and cytotoxic properties of P. triflorum and M. trichocarpa. Further investigations are needed to isolate and validate the active principles of the extract responsible various pharmacological properties.
    Keywords Artemia ; Hypoxidaceae ; Pancratium ; acetone ; antioxidant activity ; chloroform ; cytotoxicity ; inhibitory concentration 50 ; lethal concentration 50 ; medicinal properties ; methanol ; mortality ; nauplii ; petroleum ; India
    Language English
    Dates of publication 2018-09
    Size p. 290-295.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 782617-5
    ISSN 1873-6351 ; 0278-6915
    ISSN (online) 1873-6351
    ISSN 0278-6915
    DOI 10.1016/j.fct.2018.02.055
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Larvicidal activity of some medicinal plant extracts against filariasis fever mosquito, Culex quinquefasciatus (Say.) (Diptera: Culicidae)

    Johnson, M / C.R.S. Barbosa / H.D.M. Coutinho / I.R.A. Menezes / J.G.M. da Costa / N. Janakiraman / P. Maharaja / S. Murugesan

    Comparative immunology, microbiology, and infectious diseases. 2018 Dec., v. 61

    2018  

    Abstract: The present study was aimed to find the larvicidal activity of petroleum ether, chloroform, acetone and methanolic extracts of Dichanthium foveolatum (Del.) Roberty, Leptochloa uniflora Hochst, Pancratium triflorum Roxb and Molineria trichocarpa (Wight) ... ...

    Abstract The present study was aimed to find the larvicidal activity of petroleum ether, chloroform, acetone and methanolic extracts of Dichanthium foveolatum (Del.) Roberty, Leptochloa uniflora Hochst, Pancratium triflorum Roxb and Molineria trichocarpa (Wight) N.P.Balakr against Culex quinquefasciatus.The larvicidal potential of selected plant extracts were determined against 4th instar larvae of C. quinquefasciatus with various concentrations viz., 50, 100, 150, 200 and 250 mg/ml. The mortality counts were made after 24 h of incubation and LC50 values were calculated.Chloroform extracts of studied plants were showed highest larvicidal activity with remarkable irritant against the larva of C. quinquefasciatus. Highest larvicidal activity was observed in the chloroform extract of D. foveolatum against the larva of C. quinquefasciatus with LC50 = 277.03 mg/ml. The larvicidal activity of the studied plants as follows chloroform extract of D. foveolatum (LC50 = 277.03 mg/ml) >L. uniflora (LC50 = 300.56 mg/ml) >M. trichocarpa (LC50 = 306.60 mg/ml) >P. triflorum (LC50 318.42 mg/ml). The larvicidal potential of P. triflorum was as follows Chloroform > acetone > methanol > petroleum ether. The larvicidal activities of L. uniflora and M. trichocarpa were as follows Chloroform > petroleum ether > acetone > methanol respectively. The larvicidal potentials of D. foveolatum was as follows Chloroform > methanol > acetone > petroleum ether.The chloroform extract of D. foveolatum find use as broad-spectrum larvicidal agent in the near future. It is hoped that more work would be undertaken to evaluate the utility of these plant extracts for field applications considering the promising leads given by the present study.
    Keywords acetone ; chloroform ; Culex quinquefasciatus ; Dichanthium ; fever ; filariasis ; instars ; larvae ; larvicides ; Leptochloa ; lethal concentration 50 ; medicinal plants ; methanol ; mortality ; Pancratium ; petroleum ; plant extracts
    Language English
    Dates of publication 2018-12
    Size p. 1-4.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 436522-7
    ISSN 1878-1667 ; 0147-9571
    ISSN (online) 1878-1667
    ISSN 0147-9571
    DOI 10.1016/j.cimid.2018.10.004
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Antinociceptive and anti-inflammatory activities of Hymenaea martiana Hayne (Fabaceae) in mice

    A. G. M. Pacheco / E. J. Pacheco / L. A. R. O. Macedo / J. C. Silva / S. R. G. Lima-Saraiva / V. P. Barros / R. G. Oliveira-Junior / A. Branco / J. S. S. Quintans / L. J. Quintans-Junior / H. D. M. Coutinho / I. R. A. Menezes / J. R. G. S. Almeida

    Brazilian Journal of Biology, Vol

    2021  Volume 82

    Abstract: Abstract Hymenaea martiana is a species popularly known in Northeastern Brazil as “jatobá” and used in folk medicine to treat pain and inflammation. The aim of this work was to evaluate the antinociceptive and anti-inflammatory activity of H. martiana. ... ...

    Abstract Abstract Hymenaea martiana is a species popularly known in Northeastern Brazil as “jatobá” and used in folk medicine to treat pain and inflammation. The aim of this work was to evaluate the antinociceptive and anti-inflammatory activity of H. martiana. In the present study, we carried out an investigation about the effects of the crude ethanolic extract (Hm-EtOH) and the ethyl acetate fraction (Hm-AcOEt) in models of nociception and inflammation in mice. Chemical (acetic acid-induced writhing and formalin) and thermal stimuli (hot plate) were used for the evaluation of antinociceptive activity, while for the anti-inflammatory profile paw edema induced by carrageenan was used, along with leukocyte migration to the peritoneal cavity. The presence of the flavonoid astilbin in the samples was characterized through HPLC-DAD-MS analysis. Hm-EtOH and Hm-AcOEt (100, 200 and 400 mg.kg-1, i.p.) significantly reduced the number of abdominal contortions and decreased the paw licking time in the formalin test. In the hot plate, the extract increased the latency time of animals. Hm-EtOH and Hm-AcOEt inhibited significantly the increase in the edema after the administration of carrageenan. Hm-EtOH and Hm-AcOEt inhibited leukocyte migration in the peritonitis test. HPLC-DAD-MS analysis of Hm-EtOH and Hm-AcOEt revealed the presence of the flavonoid astilbin in the samples. According to the results of this study, both Hm-EtOH and Hm-AcOEt have antinociceptive and anti-inflammatory activities, which could be related with the presence of flavonoid in the extracts. The results reinforce the popular use of this plant.
    Keywords pain ; inflammation ; medicinal plants ; Caatinga ; Science ; Q ; Biology (General) ; QH301-705.5 ; Zoology ; QL1-991 ; Botany ; QK1-989
    Subject code 630
    Language English
    Publishing date 2021-06-01T00:00:00Z
    Publisher Instituto Internacional de Ecologia
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article: Chemical profile, cytotoxic and antiparasitic activity of Operculina hamiltonii

    Bitu, V.C.N / A.A. Boligon / A.A.S. Araújo / C. Coronel / C. Vega / E.F.F. Matias / H.D.M. Coutinho / I.R.A. Menezes / J. Ribeiro-Filho / L.J. Quintans-Júnior / M. Rolón

    SAAB South African journal of botany. 2017 Sept., v. 112

    2017  

    Abstract: The aim of this study was carry out a phytochemical characterization of Operculina hamiltonii and to assess its antiparasitic potential against Trypanosoma cruzi, Leishmania brasiliensis and Leishmania infantum and also its cytotoxic activity. The ... ...

    Abstract The aim of this study was carry out a phytochemical characterization of Operculina hamiltonii and to assess its antiparasitic potential against Trypanosoma cruzi, Leishmania brasiliensis and Leishmania infantum and also its cytotoxic activity. The infusion of this plant was selected on the basis of its popular use. A lyophilized infusion was analyzed by HPLC-DAD methodology. The anti-epimastigote and antipromastigote activity and cytotoxic activity were determined in vitro assay using a concentration range of 62.5–1000μg/mL. The HPLC results showed the presence of quercetin and chlorogenic acid as the major compounds. The infusion exhibited significant leishmanicidal activity with IC50 of 236.93μg/mL for Leishmania braziliensis and 342.90μg/mL for L. infantum. This study showed trypanocidal activity with IC50 10.61μg/mL, however, demonstrated significant cytotoxicity at concentrations equal to or greater than 250μg/mL with IC50 47.62μg/mL. Our results suggest that, due to the cytotoxic activity of this natural product, new assays should be performed to investigate this effect, mainly to evaluate O. hamiltonii for possible anticancer activity.
    Keywords antineoplastic activity ; antiparasitic agents ; antiparasitic properties ; chlorogenic acid ; cytotoxicity ; freeze drying ; high performance liquid chromatography ; in vitro studies ; inhibitory concentration 50 ; Leishmania infantum ; quercetin ; Trypanosoma cruzi
    Language English
    Dates of publication 2017-09
    Size p. 447-451.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 2126918-X
    ISSN 0254-6299
    ISSN 0254-6299
    DOI 10.1016/j.sajb.2017.06.029
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Potencial terapêutico e uso de plantas medicinais em uma área de Caatinga no estado do Ceará, nordeste do Brasil

    D.A Ribeiro / D.G. Macêdo / L.G.S. Oliveira / M.E. Saraiva / S.F. Oliveira / M.M.A. Souza / I.R.A Menezes

    Revista Brasileira de Plantas Medicinais , Vol 16, Iss 4, Pp 912-

    2014  Volume 930

    Abstract: O presente trabalho visou o levantamento etnobotânico das plantas medicinais, verificando a versatilidade das espécies utilizadas e o consenso de uso e/ou conhecimento entre os informantes, do Distrito de Aratama, no Município de Assaré, Ceará. As ... ...

    Abstract O presente trabalho visou o levantamento etnobotânico das plantas medicinais, verificando a versatilidade das espécies utilizadas e o consenso de uso e/ou conhecimento entre os informantes, do Distrito de Aratama, no Município de Assaré, Ceará. As informações etnobotânicas foram obtidas através de entrevistas estruturadas e semi-estruturadas com os moradores locais. Foram citadas 116 espécies com fins medicinais pertencentes a 103 gêneros e 58 famílias com destaque para Fabaceae (10ssp.), Asteraceae (7spp.) e Lamiaceae (6spp.). Entre as espécies levantadas, Mentha spicata L., Rosmarinus officinalis L., Allium sativum L., Bauhinia cheilantha (Bong.), Ximenea americana L., se destacaram como as mais versáteis dentro da comunidade. As indicações terapêuticas citadas foram agrupadas em 16 categorias de sistemas corporais, dos quais as Desordens mentais e comportamentais, as Afecções ou dores não definidas, os Transtornos do sistema respiratório, as Doenças de pele e do tecido celular subcutâneo, e os Transtornos do sistema sensorial (ouvidos), mostram maior concordância entre os informantes na utilização de espécies para tratar um sistema corporal especifico. Os resultados mostraram elevada riqueza da flora medicinal presente na caatinga. Neste sentido, torna-se necessária a intensificação de estudos que avaliem e consolidem as propriedades químicas e farmacológicas destas espécies.
    Keywords Etnobotânica ; semiárido ; Importância Relativa ; Fator Consenso de Informantes ; Pharmacy and materia medica ; RS1-441 ; Medicine ; R ; Botany ; QK1-989 ; Science ; Q
    Language Portuguese
    Publishing date 2014-12-01T00:00:00Z
    Publisher UNESP
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Antimicrobial Effect of Lippia sidoides and Thymol on Enterococcus faecalis Biofilm of the Bacterium Isolated from Root Canals

    H. N. H. Veras / F. F. G. Rodrigues / M. A. Botelho / I. R. A. Menezes / H. D. M. Coutinho / J. G. M. da Costa

    The Scientific World Journal, Vol

    2014  Volume 2014

    Keywords Science ; Q ; Science (General) ; Q1-390
    Publishing date 2014-01-01T00:00:00Z
    Publisher Hindawi Publishing Corporation
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Antimicrobial Effect of Lippia sidoides and Thymol on Enterococcus faecalis Biofilm of the Bacterium Isolated from Root Canals

    H. N. H. Veras / F. F. G. Rodrigues / M. A. Botelho / I. R. A. Menezes / H. D. M. Coutinho / J. G. M. da Costa

    The Scientific World Journal, Vol

    2014  Volume 2014

    Abstract: The species Lippia sidoides Cham. (Verbenaceae) is utilized in popular medicine as a local antiseptic on the skin and mucosal tissues. Enterococcus faecalis is the bacterium isolated from root canals of teeth with persistent periapical lesions and has ... ...

    Abstract The species Lippia sidoides Cham. (Verbenaceae) is utilized in popular medicine as a local antiseptic on the skin and mucosal tissues. Enterococcus faecalis is the bacterium isolated from root canals of teeth with persistent periapical lesions and has the ability to form biofilm, where it is responsible for the failure of endodontic treatments. Essential oil of L. sidoides (EOLS) and its major component, thymol, were evaluated for reducing the CFU in biofilms of E. faecalis in vitro. The essential oil was obtained by hydrodistillation and examined with respect to the chemical composition, by gas chromatography-mass spectrometry (GC-MS). The GC-MS analysis has led to the identification of thymol (84.9%) and p-cymene (5.33%). EOLS and thymol reduced CFU in biofilms of E. faecalis in vitro (time of maturation, 72 h), with an exposure time of 30 and 60 min at concentrations of 2.5 and 10%. There was no statistical difference in effect between EOLS and thymol, demonstrating that this phenolic monoterpene was the possible compound responsible for the antimicrobial activity of EOLS. This study provides a basis for the possible utilization of EOLS as an adjuvant in the treatment of root canals that show colonization by E. faecalis.
    Keywords Technology ; T ; Medicine ; R ; Science ; Q
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Essential oil of Lippia alba and its main constituent citral block the excitability of rat sciatic nerves

    D.G. Sousa / S.D.G. Sousa / R.E.R. Silva / K.S. Silva-Alves / F.W. Ferreira-da-Silva / M.R. Kerntopf / I.R.A. Menezes / J.H. Leal-Cardoso / R. Barbosa

    Brazilian Journal of Medical and Biological Research, Vol 48, Iss 8, Pp 697-

    2015  Volume 702

    Abstract: Lippia alba is empirically used for infusions, teas, macerates, and hydroalcoholic extracts because of its antispasmodic, analgesic, sedative, and anxiolytic effects. Citral is a mixture of trans-geranial and cis-neral and is the main constituent of L. ... ...

    Abstract Lippia alba is empirically used for infusions, teas, macerates, and hydroalcoholic extracts because of its antispasmodic, analgesic, sedative, and anxiolytic effects. Citral is a mixture of trans-geranial and cis-neral and is the main constituent of L. alba essential oil and possesses analgesic, anxiolytic, anticonvulsant, and sedative effects. The present study evaluated the effects of the essential oil of L. alba (EOLa) and citral on compound action potentials (CAPs) in Wistar rat sciatic nerves. Both drugs inhibited CAP in a concentration-dependent manner. The calculated half-maximal inhibitory concentrations (IC50) of peak-to-peak amplitude were 53.2 µg/mL and 35.00 µg/mL (or 230 µM) for EOLa and citral, respectively. Peak-to-peak amplitude of the CAP was significantly reduced by 30 µg/mL EOLa and 10 µg/mL citral. EOLa and citral (at 60 and 30 µg/mL, values close to their respective IC50 for CAP blockade) significantly increased chronaxy and rheobase. The conduction velocity of the first and second CAP components was statistically reduced to ∼86% of control with 10 µg/mL EOLa and ∼90% of control with 3 µg/mL citral. This study showed that EOLa inhibited nerve excitability and this effect can be explained by the presence of citral in its composition. Both EOLa and citral showed inhibitory actions at lower concentrations compared with other essential oils and constituents with local anesthetic activity. In conclusion, these data demonstrate that EOLa and citral are promising agents in the development of new drugs with local anesthetic activity.
    Keywords Citral ; Nerve excitability ; Lippia alba ; Sciatic nerve ; Essential oil ; Compound action potential ; Medicine (General) ; R5-920 ; Biology (General) ; QH301-705.5
    Subject code 571
    Language English
    Publishing date 2015-06-01T00:00:00Z
    Publisher Associação Brasileira de Divulgação Científica
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Essential oil of Lippia alba and its main constituent citral block the excitability of rat sciatic nerves

    D.G. Sousa / S.D.G. Sousa / R.E.R. Silva / K.S. Silva-Alves / F.W. Ferreira-da-Silva / M.R. Kerntopf / I.R.A. Menezes / J.H. Leal-Cardoso / R. Barbosa

    Brazilian Journal of Medical and Biological Research, Vol 48, Iss 8, Pp 697-

    2015  Volume 702

    Abstract: Lippia alba is empirically used for infusions, teas, macerates, and hydroalcoholic extracts because of its antispasmodic, analgesic, sedative, and anxiolytic effects. Citral is a mixture of trans-geranial and cis-neral and is the main constituent of L. ... ...

    Abstract Lippia alba is empirically used for infusions, teas, macerates, and hydroalcoholic extracts because of its antispasmodic, analgesic, sedative, and anxiolytic effects. Citral is a mixture of trans-geranial and cis-neral and is the main constituent of L. alba essential oil and possesses analgesic, anxiolytic, anticonvulsant, and sedative effects. The present study evaluated the effects of the essential oil of L. alba (EOLa) and citral on compound action potentials (CAPs) in Wistar rat sciatic nerves. Both drugs inhibited CAP in a concentration-dependent manner. The calculated half-maximal inhibitory concentrations (IC50) of peak-to-peak amplitude were 53.2 µg/mL and 35.00 µg/mL (or 230 µM) for EOLa and citral, respectively. Peak-to-peak amplitude of the CAP was significantly reduced by 30 µg/mL EOLa and 10 µg/mL citral. EOLa and citral (at 60 and 30 µg/mL, values close to their respective IC50 for CAP blockade) significantly increased chronaxy and rheobase. The conduction velocity of the first and second CAP components was statistically reduced to ∼86% of control with 10 µg/mL EOLa and ∼90% of control with 3 µg/mL citral. This study showed that EOLa inhibited nerve excitability and this effect can be explained by the presence of citral in its composition. Both EOLa and citral showed inhibitory actions at lower concentrations compared with other essential oils and constituents with local anesthetic activity. In conclusion, these data demonstrate that EOLa and citral are promising agents in the development of new drugs with local anesthetic activity.
    Keywords Citral ; Nerve excitability ; Lippia alba ; Sciatic nerve ; Essential oil ; Compound action potential ; Medicine (General) ; R5-920 ; Biology (General) ; QH301-705.5
    Subject code 571
    Language English
    Publishing date 2015-08-01T00:00:00Z
    Publisher Associação Brasileira de Divulgação Científica
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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