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Affiliation(s)
- E Mongelli
- Catedra de Microbiologia Industrial y Biotecnologia
| | - V Martino
- Catedra de Microbiologia Industrial y Biotecnologia
| | - J Coussio
- Catedra de Farmacognosia, IQUIMEFA (CONICET), Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, 1113, Buenos Aires, Argentina
| | - G Ciccia
- Catedra de Microbiologia Industrial y Biotecnologia
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Desmarchelier C, Novoa Bermudez M, Coussio J, Ciccia G, Boveris A. Antioxidant and Prooxidant Activities in Aqueous Extracts of Argentine Plants. ACTA ACUST UNITED AC 2008. [DOI: 10.1076/phbi.35.2.116.13282] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- C. Desmarchelier
- CAtedra de Biotecnologia y Microbiologia Industrial, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, (1113) Buenos Aires, Argentina
| | - M.J. Novoa Bermudez
- CAtedra de Biotecnologia y Microbiologia Industrial, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, (1113) Buenos Aires, Argentina
| | - J. Coussio
- CAtedra de Biotecnologia y Microbiologia Industrial, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, (1113) Buenos Aires, Argentina
| | - G. Ciccia
- CAtedra de Biotecnologia y Microbiologia Industrial, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, (1113) Buenos Aires, Argentina
- Catedra de Farmacognosia, IQUIMEFA CONICET, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, (1113) Buenos Aires, Argentina
| | - A. Boveris
- CAtedra de Biotecnologia y Microbiologia Industrial, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, (1113) Buenos Aires, Argentina
- Catedra de Fisicoquimica, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, (1113) Buenos Aires, Argentina
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Desmarchelier C, Repetto M, Coussio J, Llesuy S, Ciccia G. Total Reactive Antioxidant Potential (TRAP) and Total Antioxidant Reactivity (TAR) of Medicinal Plants Used in Southwest Amazonia (Bolivia and Peru). ACTA ACUST UNITED AC 2008. [DOI: 10.1076/phbi.35.4.288.13303] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | - M Repetto
- Catedra de Quimica General e Inorganica,
| | - J Coussio
- Catedra de Farmacognosia (IQUIMEFA-CONICET), Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956 (1113) Cap. Fed. Argentina
| | - S Llesuy
- Catedra de Microbiologia Industrial y Biotecnologia,
| | - G Ciccia
- Catedra de Microbiologia Industrial y Biotecnologia,
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Barreiro Arcos ML, Cremaschi G, Werner S, Coussio J, Ferraro G, Anesini C. Tilia cordata Mill. extracts and scopoletin (isolated compound): differential cell growth effects on lymphocytes. Phytother Res 2006; 20:34-40. [PMID: 16397918 DOI: 10.1002/ptr.1798] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Aqueous extracts or infusions obtained from the flowers of Tilia species are widely used for the treatment of anxiety in folk medicine. In this work, the antiproliferative action of aqueous, dichloromethane and ethanol extracts obtained from Tilia cordata Mill. flowers on tumoral (BW 5147 lymphoma) and normal lymphocytes is described. Both extracts showed a selective action on tumoral cells, inducing apoptosis. In the case of normal T cells these extracts suppressed mitogen-induced proliferation without affecting viability, suggesting a suppressive but not cytotoxic effect. These effects were clearly concentration dependent. A coumarin (scopoletin), the main component in the dichloromethane extract presented antiproliferative action on BW 5147 cells, suggesting that it may be at least partly responsible for the activity displayed by this extract.
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Sülsen V, Güida C, Coussio J, Paveto C, Muschietti L, Martino V. In vitro evaluation of trypanocidal activity in plants used in Argentine traditional medicine. Parasitol Res 2005; 98:370-4. [PMID: 16341880 DOI: 10.1007/s00436-005-0060-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2005] [Accepted: 10/19/2005] [Indexed: 10/25/2022]
Abstract
Thirty-two organic and aqueous extracts, belonging to 12 Argentine medicinal plants were tested for their in vitro trypanocidal activity on epimastigote forms of Trypanosoma cruzi. Among the selected species, the organic extracts of Ambrosia scabra, Ambrosia tenuifolia, Baccharis spicata, Eupatorium buniifolium, Lippia integrifolia, Mulinum spinosum and Satureja parvifolia, and the aqueous extracts of E. buniifolium, L. integrifolia, M. spinosum and S. parvifolia showed trypanocidal activity with a percentage of growth inhibition higher than 70% at a concentration of 100 microg/ml.
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Affiliation(s)
- V Sülsen
- Cátedra de Farmacognosia, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, (IQUIMEFA)-(UBA-CONICET), Buenos Aires, Argentina
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Desmarchelier C, del V Pacciaroni A, Abate-Daga D, Coussio J, Gil RR, Silva GL. Antioxidant and free radical scavenging activities ofMisodendrum punctulatum, myzodendrone and structurally related phenols. Phytother Res 2005; 19:1043-7. [PMID: 16372370 DOI: 10.1002/ptr.1786] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The peroxyl radical scavenging activity of a dry methanol extract of Misodendrum punctulatum was determined by means of luminol-enhanced chemiluminescence assay, allowing to calculate the total reactive antioxidant potential (TRAP) index equal to 239 +/- 26 microm, expressed in Trolox equivalents. The flavan-3-ol catechin (1) and the phenylbutanone derivative myzodendrone (2) were identified through assay-guided fractionation as active metabolites present in the extract, and their structures were elucidated by chemical and spectroscopic analysis. Three other structurally related synthetic phenols, dehydrozingerone (3), zingerone (4) and myzodendrone aglycone (5), were also analysed using this method. Compounds 1 and 2 were highly effective as free radical scavengers (TRAP = 1257 microm and 1018 microm, respectively) when compared with Trolox (TRAP = 144 microm), used as a standard. Compounds 3 and 5 were also active showing TRAP values of 229 microm and 219 microm, respectively, similarly to that observed for the dry extract. On the other hand, 4 was inactive. Catechin (1) also reduced the production of thiobarbituric acid reactive substances (TBARS) in rat liver homogenates, with IC50 = 26 microg/mL, superior to that obtained for Trolox, IC50 = 73 microg/mL. Compounds 2 and 5 showed IC50 values > 1000 microg/mL, while no activity could be observed for 3, 4, or the extract.
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Affiliation(s)
- Cristian Desmarchelier
- Cátedra de Farmacognosia (IQUIMEFA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113), Buenos Aires, Argentina
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Martino V, Morales J, Martínez-Irujo JJ, Font M, Monge A, Coussio J. Two ellagitannins from the leaves ofTerminalia triflorawith inhibitory activity on HIV-1 reverse transcriptase. Phytother Res 2004; 18:667-9. [PMID: 15472920 DOI: 10.1002/ptr.1504] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The bioassay- guided fractionation of the aqueous extract of Terminalia triflora leaves afforded punicalin and 2-O-galloylpunicalin, isolated for the first time from this species. These compounds showed inhibitory activity on HIV-1 reverse transcriptase in a dose-dependent manner. Punicalin showed an IC(50) of 0.11 microg/ml (0.14 microM) and 2-O-galloylpunicalin an IC(50) of 0.10 microg/ml (0.11 microM).
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Affiliation(s)
- V Martino
- Cátedra de Farmacognosia, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA) (UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, República Argentina.
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De Kimpe N, Demyttenaere J, Vervisch S, Debenedetti S, Coussio J, Maes D. Synthesis of Virgatol and Virgatenol, Two Naturally Occurring Coumarins from Pterocaulon virgatum (L.) DC, and 7-(2,3-Epoxy-3-methylbutoxy)-6-methoxycoumarin, Isolated from Conyza obscura DC. SYNTHESIS-STUTTGART 2004. [DOI: 10.1055/s-2004-829139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Anesini C, Turner S, Borda E, Ferraro G, Coussio J. Effect of Larrea divaricata Cav. extract and nordihydroguaiaretic acid upon peroxidase secretion in rat submandibulary glands. Pharmacol Res 2004; 49:441-8. [PMID: 14998553 DOI: 10.1016/j.phrs.2003.10.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/22/2003] [Indexed: 11/24/2022]
Abstract
Free radicals are involved in several diseases, including cancer, central nervous system alterations and inflammatory pathologies. Peroxidase is an oral enzyme implicated in the defence of oral cavity. It has been determined that flavonoids and lignans possess antioxidant and free radical scavenging either directly or indirectly, usually by means of increasing the secretion of free radicals scavenger enzymes. Larrea divaricata Cav. is a plant used in folk Argentine medicine for the treatment of cancer and inflammatory ailments. In this study, we have determined the effect and mechanism of action of an aqueous extract of the leaves of L. divaricata and NDGA on peroxidase secretion in female rat submandibular glands. The extract significantly increased the secretion and total peroxidase. % of secreted peroxidase (X +/- S.E.M.): extract maximum response: 150 +/- 10; % of total peroxidase (X +/- S.E.M.): extract maximum response: 1000 +/- 90. The effect of the extract on peroxidase secretion was mediated by beta1 adrenoceptors (% of secreted peroxidase: extract + atenol maximum response: 50 +/- 4 ). Meanwhile, NDGA produced a decrease in peroxidase secretion (peroxidase secreted: basal: 0.44 +/- 0.03; NDGA 2.5 x 10(-6) M: 0.20 +/- 0.02; prostaglandins E2 (PGE2) 10(-7)M: 1.32 +/- 0.5; NDGA + PGE2: 0.46 +/- 0.035), an effect that was exerted by the inhibition on prostaglandins synthesis.
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Affiliation(s)
- Claudia Anesini
- IQUIMEFA (UBA-CONICET), University of Buenos Aires, Argentina.
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Paveto C, Güida MC, Esteva MI, Martino V, Coussio J, Flawiá MM, Torres HN. Anti-Trypanosoma cruzi activity of green tea (Camellia sinensis) catechins. Antimicrob Agents Chemother 2004; 48:69-74. [PMID: 14693520 PMCID: PMC310206 DOI: 10.1128/aac.48.1.69-74.2004] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The trypanocidal action of green tea catechins against two different developmental stages of Trypanosoma cruzi is reported for the first time. This activity was assayed with the nonproliferative bloodstream trypomastigote and with the intracellular replicative amastigote parasite forms. An ethyl acetate fraction from Camellia sinensis green tea leaves, which contains most of the polyphenolic compounds and the maximal trypanocidal activity, was obtained by fractionation of the aqueous extract with organic solvents. The active compounds present in this extract were further purified by LH-20 column chromatography and were identified by high-performance liquid chromatography analysis with a photo diode array detector and gas chromatography coupled to mass spectroscopy. The following flavan-3-ols derivatives, known as catechins, were identified: catechin, epicatechin, gallocatechin, epigallocatechin, catechin gallate, epicatechin gallate, gallocatechin gallate, and epigallocatechin gallate. The purified compounds lysed more than 50% of the parasites present in the blood of infected BALB/c mice at concentrations as low as 0.12 to 85 pM. The most active compounds were gallocatechin gallate and epigallocatechin gallate, with minimal bactericidal concentrations that inhibited 50% of isolates tested of 0.12 and 0.53 pM, respectively. The number of amastigotes in infected Vero cells decreased by 50% in the presence of each of these compounds at 100 nM. The effects of the catechins on the recombinant T. cruzi arginine kinase, a key enzyme in the energy metabolism of the parasite, were assayed. The activity of this enzyme was inhibited by about 50% by nanomolar concentrations of catechin gallate or gallocatechin gallate, whereas the other members of the group were less effective. On the basis of these results, we suggest that these compounds could be used to sterilize blood and, eventually, as therapeutic agents for Chagas' disease.
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Affiliation(s)
- Cristina Paveto
- Instituto de Investigaciones en Ingeniería Genética y Biología Molecular y Facultad de Ciencias Exactas y Naturales (CONICET-UBA), 1428 Buenos Aires, Argentina.
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Hnatyszyn O, Moscatelli V, Rondina R, Costa M, Arranz C, Balaszczuk A, Coussio J, Ferraro G. Flavonoids from Achyrocline satureioides with relaxant effects on the smooth muscle of Guinea pig corpus cavernosum. Phytomedicine 2004; 11:366-369. [PMID: 15185852 DOI: 10.1078/0944711041495182] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Ethanol extract of the aerial parts of Achyrocline satureioides (Lam.) DC. (Asteraceae) showed a significant, dose dependent, relaxant effect on the smooth muscle of corpus cavernosum strips, obtained from Guinea pig (65.5 +/- 4.1% of relaxation at the dose of 25.0 mg/ml). Bioassay guided fractionation of this extract furnished two flavonoids, quercetin and quercetin 3-methyl ether, with important vasorelaxing effects on the corpus cavernosum strips (79.8 +/- 8.4 and 66.0 +/- 4.8% of relaxation respectively at the dose of 0.075 mg/ml). Two methyl derivatives of quercetin obtained by synthesis, quercetin 3,7,3',4'-tetramethylether and quercetin 3,5,7,3',4'-pentamethylether, showed similar relaxant effects at the dose of 0.075 mg/ml (86.4 +/- 8.5 and 67.31 +/- 1.4% of relaxation respectively). The results show that the ethanol extract of A. satureioides and the assayed compounds exhibit significant vasorelaxing properties. Additionally, it is shown that the number of methyl groups in the quercetin nucleus has no significant influence on the effectiveness of these compounds.
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Affiliation(s)
- O Hnatyszyn
- Cátedra de Farmacognosia, IQUIMEFA (UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.
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Mongelli E, Coussio J, Ciccia G. Investigation of the larvicidal activity of Pothomorphe peltata and isolation of the active constituent. Phytother Res 2002; 16 Suppl 1:S71-2. [PMID: 11933144 DOI: 10.1002/ptr.753] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The insecticidal activity of the leaves of Pothomorphe peltata (Piperaceae) was evaluated on Aedes aegypti larvae. The active methanol extract was subjected to a bioactivity-directed fractionation, monitored by the larvicidal assay, and led to the isolation of a catechol derivative, 4-nerolidylcatechol. This compound was quite potent against Aedes aegypti larvae (LC(50) = 9.1 microg/mL).
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Affiliation(s)
- E Mongelli
- Cátedra de Farmacognosia, IQUIMEFA-CONICET, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113) Buenos Aires, Argentina
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Abstract
Ilex paraguariensis (common name: 'mate' or 'yerba mate') is used for the preparation of the most popular tea-like beverage of South America. Choleretic, hypocholesteremic, antioxidant, hepatoprotective and bitter taste properties of mate are attributed to the phenolic constituents of the leaves. I. paraguariensis has seven local congeneric substitutes or adulterants: I. brevicuspis; I. theezans; I. microdonta; I. dumosa var. dumosa; I. taubertiana; I. pseudobuxus; I. integerrima; and I. argentina. An HPLC method using UV with Photodiode Array Detector was developed for the identification and quantification of caffeoyl derivatives (caffeic acid, chlorogenic acid, 3,4-dicaffeoylquinic acid, 3,5-dicaffeoylquinic acid and 4,5-dicaffeoylquinic acid) and flavonoids (quercetin, rutin and kaempferol) in these species. I. paraguariensis showed a higher content of flavonoids and caffeoyl derivatives than the other assayed species.
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Affiliation(s)
- R Filip
- Cátedra de Farmacognosia, Facultad de Farmacia y Bioquímica, IQUIMEFA (UBA-CONICET), Junín 956, 1113, Buenos Aires, Argentina.
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Abstract
The insecticidal activity of 11 extracts from nine South American medicinal plants has been studied using the Aedes aegypti larvicidal assay. Eight of the 11 plant extracts studied showed toxicity against the A. aegypti larvae (LC(50)<500 microg/ml). The dichloromethane extracts of Abuta grandifolia and Minthostachys setosa demonstrated high larvicidal activity, the most active being the dichloromethane extract of A. grandifolia, with an LC(50)=2.6 microg/ml (LC(100)= 8.1 microg/ml), indicating an activity 2-fold higher than beta-asarone, a natural botanical insecticide used as a positive control (LC(100)=16 microg/ml). On the other hand, the dichloromethane extract of M. setosa was quite potent against A. aegypti larvae showing an LC(50)=9.2 microg/ml (LC(100)=25.2 microg/ml). The results obtained suggest that the extracts of A. grandifolia and M. setosa are promising as larvicides against A. aegypti larvae and could be useful in the search for new larvicidal natural compounds.
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Affiliation(s)
- G Ciccia
- Cátedra de Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 (1113) Buenos Aires, Argentina
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Romano A, Mongelli E, Bruno AM, Gaozza C, Coussio J, Ciccia G. Human DNA topoisomerase I poisoning activity of bis-1-aminomethylnaphtalenes. A correlation with their cytotoxic activity. Pharmazie 2000; 55:612-4. [PMID: 10989841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Symmetrical bis-1-aminmoethylnaphtalenes, a group of compounds that demonstrated cytotoxicity towards human tumor cell lines, showed human topoisomerase I poisoning activity. The compounds tested were: N,N'-bis-1-naphthylmethyl-1,6-hexanediamine (1a), N,N'-bis-1-naphthylmethyl-1,8-octanediamine (1b), N,N'-bis-1-naphthylmethyl-1,12-dodecanediamine (1c), N,N'-bis-1-naphthylmethyl-4,4-bipiperidine (2) and N-(1-naphthylmethyl)-N'-dimethyl-1,3-diaminepropane dichlorhydrate (3). All showed human topoisomerase I inhibition by producing protein-linked DNA breaks. The most active were 1a, 1b, 1c with a percentage stimulation of DNA cleavage of 75, 84 and 70% at 100 micrograms/ml, respectively. Compounds 2 and 3 were moderately active as poisons of topoisomerase I activity, the former showing 58% stimulation of DNA cleavage at 100 micrograms/ml and the latter a 24% stimulation. The correlation observed between topoisomerase I poisoning and in vitro cytotoxic activity suggests that this could be a possible mechanism for the cytotoxicity observed in tumor cell lines.
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Affiliation(s)
- A Romano
- Cátedra de Farmacognosia, IQUIMEFA-CONICET, Universidad de Buenos Aires, Argentina.
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Mongelli E, Pampuro S, Coussio J, Salomon H, Ciccia G. Cytotoxic and DNA interaction activities of extracts from medicinal plants used in Argentina. J Ethnopharmacol 2000; 71:145-151. [PMID: 10904157 DOI: 10.1016/s0378-8741(99)00195-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Eight crude extracts from seven Argentine plants with cancer-related ethnobotanical uses have been subjected to a bioscreening study to detect cytotoxic activity. The plants studied were: Aristolochia triangularis, Baccharis grisebachii, Bolax gummifera, Eupatorium hecatanthum, Erythrina crista-galli, Pterocaulon polystachium and Salpichroa origanifolia. Crown gall tumour inhibition, DNA interaction and cytotoxicity towards KB cells were assayed using the potato disc, the DNA-methyl green (DNA-MG) and the KB cells cytotoxicity bioassays respectively. The results obtained indicate that A. triangularis (ED50=47 microg/ml), B. gummifera (ED50=32 microg/ml) and E. hecatanthum (ED50=35 microg/ml) contained cytotoxic compounds against KB cells. All of the plants studied inhibited the growth of crown gall tumours, showing correlation between the experimental data and the uses reported for these plants. Moreover, the results obtained for the extracts of E. hecatanthum and P. polystachium indicate the presence of compounds that interact with DNA (48 and 22% of absorbance decrease, respectively). The results obtained suggest that cytotoxicity could play an important role in the activities claimed for the plants under study.
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Affiliation(s)
- E Mongelli
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón 2, 1428, Buenos Aires, Argentina
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Desmarchelier C, Ciccia G, Coussio J. Recent Advances in the Search for Antioxidant Activity in South American Plants. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1572-5995(00)80030-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Desmarchelier C, Romão RL, Coussio J, Ciccia G. Antioxidant and free radical scavenging activities in extracts from medicinal trees used in the 'Caatinga' region in northeastern Brazil. J Ethnopharmacol 1999; 67:69-77. [PMID: 10616962 DOI: 10.1016/s0378-8741(98)00200-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The in vitro antioxidant and free radical scavenging properties of bark extracts of Anadenanthera macrocarpa Brenan (Fabaceae), Astronium urundeuva Engl. (Anacardiaceae), Mimosa verrucosa Benth. (Fabaceae) and Sideroxylon obtusifolium T.D. Penn. (Sapotaceae), four trees used as anti-inflammatory agents in the Brazilian state of Bahia, were studied using different bioassays. The total reactive antioxidant potential (TRAP) of the aqueous and methanolic extracts was determined by monitoring the intensity of luminol-enhanced chemiluminescence (CL), using 2,2'-azo-bis(2-amidinopropane) as a peroxyl radical source. All the extracts studied were active in this method. The highest activity, measured as equivalents of Trolox concentration, was observed in the methanolic extract of A. macrocarpa (TRAP = 3028 +/- 95 microM). Lipid peroxidation was assessed by means of the production of thiobarbituric acid reactive substances (TBARS) and hydroperoxide-initiated CL in rat liver homogenates. As in the case of luminol-enhanced CL, all the extracts tested were effective in reducing the production of TBARS. The highest activity was observed in the aqueous extract of A. macrocarpa (IC50 = 54 microg/ml). Extracts of A. macrocarpa and S. obtusifolium also reduced hydroperoxide-initiated CL, the methanolic extract of the former being the most active, showing an IC50 = 2.0 microg/ml. DNA-sugar damage induced by Fe(II) salts was also used to determine the capacity of the extracts to suppress hydroxyl radical-mediated degradation of DNA. All extracts tested were highly effective in reducing oxidation of DNA. The highest activity was observed in the methanolic extract of A. urundeuva, showing an IC50 = 37 microg/ml. The results obtained suggest that the antioxidant activity described could play an important role in the anti-inflammatory activity claimed for the plants under study.
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Affiliation(s)
- C Desmarchelier
- Cátedra de Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina
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Hnatyszyn O, Miño J, Gorzalczany S, Opezzo J, Ferraro G, Coussio J, Acevedo C. Diuretic activity of an aqueous extract of Phyllanthus sellowianus. Phytomedicine 1999; 6:177-179. [PMID: 10439482 DOI: 10.1016/s0944-7113(99)80006-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Phyllanthus sellowianus Muell. Arg. (Euphorbiaceae) is used widely as a hypoglycemic and diuretic agent in South American folk medicine. In order to assess the diuretic activity of this plant, test animals were treated with a single oral administration of an aqueous extract (5% w/v) of the stem bark of P. sellowianus (400 mg/kg body weight), which produced after 8 h a significant increase in the urinary excretion. In the studies on acute toxicity in mice neither mortality nor neurobehavioral or autonomic profile changes could be observed.
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Affiliation(s)
- O Hnatyszyn
- Cátedra de Farmacognosia, IQUIMEFA (UBA-CONICET), Universidad de Buenos Aires, Argentina.
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Mongelli E, Romano A, Desmarchelier C, Coussio J, Ciccia G. Cytotoxic 4-nerolidylcatechol from Pothomorphe peltata inhibits topoisomerase I activity. Planta Med 1999; 65:376-378. [PMID: 10364848 DOI: 10.1055/s-2006-960793] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Bioactivity-guided fractionation of the leaf methanolic extract of P. peltata (Piperaceae), using the brine shrimp lethality test, led to the isolation of catechol derivative 4-nerolidylcatechol (4-NC). The methanolic extract was active against crown gall tumour in potato discs, showing a 22% crown gall tumour inhibition (SD = 4%), while 4-NC was cytotoxic against KB tumour cells growth (EC50 = 1.3 micrograms/ml). No interaction with DNA could be observed when tested using the methyl green-DNA (MG-DNA) bioassay. An inhibition in the activity of topoisomerase I using agarose gel electrophoresis was detected in the presence of the purified compound (IC50 = 20 micrograms/ml), suggesting that this could be a possible mechanism for the cytotoxicity observed in KB cells.
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Hnatyszyn O, Broussalis A, Herrera G, Muschietti L, Coussio J, Martino V, Ferraro G, Font M, Monge A, Martínez-Irujo JJ, Sanromán M, Cuevas MT, Santiago E, Lasarte JJ. Argentine plant extracts active against polymerase and ribonuclease H activities of HIV-1 reverse transcriptase. Phytother Res 1999; 13:206-9. [PMID: 10353158 DOI: 10.1002/(sici)1099-1573(199905)13:3<206::aid-ptr409>3.0.co;2-d] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Lipophilic and hydrophilic extracts of four Argentine plants (Gamochaeta simplicaulis Cabr. 1, Achyrocline flaccida Wein. D. C. 2, Eupatorium buniifolium H. et A. 3, and Phyllanthus sellowianus Muell. Arg. 4) were examined in vitro for their ability to inhibit the polymerase and ribonuclease H (RNase H) activities of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) (wild and Y181C mutant types). The active extracts were also examined as inhibitors of viral replication in HLT4LacZ-1IIIB cell cultures, evaluating their cytotoxicity in parallel. Infusions 2I and 4I, among the crude extracts, showed the highest activity. These extracts were refractioned into four fractions; 2I4 and 4I4 were active as inhibitors of DNA-polymerase (wild and Y181C types) and RNase H activities. These fractions were potent as inhibitors of viral replication and were not cytotoxic. Refractionation of 2I4 yielded five new fractions, two of which, 2I4-4 and 2I4-5, showed notable activity. Refractionation of 4I4 yielded for new fractions; of these, 4I4-3 and 4I4-4 were active. The marked biological activity found in the infusion of A. flaccida and P. sellowianus makes them sufficiently attractive to be considered in the combined chemotherapy of the disease.
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Affiliation(s)
- O Hnatyszyn
- IQUIMEFA (Instituto de Química y Metabolismo del Fármaco) UBA-CONICET, Cátedra de Farmacognosia, Facultad de Farmacia y Bioquímica, Buenos Aires, República Argentina
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Mongelli E, Coussio J, Ciccia G, Maestri D, Zygadlo J. MEDICINAL SPECIES OF THE SOLANACEAE FAMILY : PRIMARY SCREENING OF CYTOTOXICITY. ACTA ACUST UNITED AC 1999. [DOI: 10.17660/actahortic.1999.501.26] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Desmarchelier C, Coussio J, Ciccia G. Antioxidant and free radical scavenging effects in extracts of the medicinal herb Achyrocline satureioides (Lam.) DC. ("marcela"). Braz J Med Biol Res 1998; 31:1163-70. [PMID: 9876284 DOI: 10.1590/s0100-879x1998000900010] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Achyrocline satureioides (Lam.) DC. (Compositae) is a medicinal herb used in Argentina, Uruguay, Brazil and Paraguay for its choleretic, antispasmodic and hepatoprotective properties. The presence of the flavonoid quercetin and its derivatives, and of different phenolic acids such as caffeic, chlorogenic and isochlorogenic acids in the aerial parts of this plant has led us to study the antioxidant activity of its extracts using different bioassays. The inhibition of luminol-enhanced chemiluminescence by the aqueous and methanolic extracts was used to show that their total reactive antioxidant potential index (TRAP; in microM Trolox equivalents) was 91.0 +/- 15.4 and 128.1 +/- 20.1 microM, respectively, while the total antioxidant reactivity index (TAR) was calculated to be 1537 +/- 148 and 1910 +/- 171 microM. Only the methanolic extract was capable of reducing iron (II)-dependent DNA damage. Lipid peroxidation was assessed by two different methods. The aqueous extract reduced hydroperoxide-initiated chemiluminescence in rat liver homogenates at all concentrations in a dose-dependent manner, with a calculated IC50 = 225 micrograms/ml, while the methanolic extract was only effective at higher concentrations (100 and 1000 micrograms/ml). Both aqueous and methanolic extracts were capable of reducing the production of thiobarbituric acid reactive substances (TBARS) in rat liver homogenates, with an IC50 > 1000 micrograms/ml. The results obtained suggest that the extracts of A. satureioides possess significant free radical scavenging and antioxidant activity in vitro, a fact that should encourage future in vivo studies.
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Affiliation(s)
- C Desmarchelier
- Cátedra de Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina.
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Duschatzky C, Carrascull A, Bailac P, Ponzi M, Baren CV, Muschietti L, Coussio J. Composition of the Essential Oil from Flowers and Leaves ofHeterotheca latifoliaBuckley (Compositae). Journal of Essential Oil Research 1998. [DOI: 10.1080/10412905.1998.9700851] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Desmarchelier C, Barros S, Repetto M, Latorre LR, Kato M, Coussio J, Ciccia G. 4-Nerolidylcatechol from Pothomorphe spp. scavenges peroxyl radicals and inhibits Fe(II)-dependent DNA damage. Planta Med 1997; 63:561-563. [PMID: 9434614 DOI: 10.1055/s-2006-957767] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The total reactive antioxidant potential (TRAP) and total antioxidant reactivity (TAR) of 4-nerolidylcatechol (4-NC) and methanolic extracts of Pothomorphe umbellata and P. peltata were determined by monitoring the intensity of luminol enhanced chemiluminescence by peroxyl radicals derived from thermolysis of 2,2'-azobis(2-amidinopropane). The highest antioxidant potential was measured in the extract of P. umbellata (TRAP = 97.2 microM) while the highest reactivity was observed in the extract of P. peltata (TAR = 5.0 microM), measured as equivalents of Trolox concentration. These results were higher than those obtained for 4-NC (TRAP = 33.6 microM, TAR = 4.9 microM). DNA sugar damage induced by Fe(II) salts was also used to determine the capacity of 4-NC to suppress hydroxyl radical-mediated degradation of DNA. Calculated IC50 values for 4-NC and catechin, used as a standard, were 25 and 17 microM, respectively.
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Affiliation(s)
- C Desmarchelier
- Cátedra de Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina
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Mongelli E, Desmarchelier C, Rodríguez Talou J, Coussio J, Ciccia G. In vitro antioxidant and cytotoxic activity of extracts of Baccharis coridifolia DC. J Ethnopharmacol 1997; 58:157-163. [PMID: 9421251 DOI: 10.1016/s0378-8741(97)00106-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The in vitro antioxidant and cytotoxic activities in different extracts of Baccharis coridifolia DC. (Compositae) were studied using different bioassays. Antioxidant activity was tested using hydroperoxide-initiated chemiluminescence (CL) in rat liver homogenates. The aqueous extract showed antioxidant activity (IC50 = 141 microg/ml), while the dichloromethane and methanol extracts were prooxidant. Activity in the aqueous extract was confirmed by determination of thiobarbituric acid-reactive substances (TBARS), showing an IC50 = 556 microg/ml. On the other hand, studies on the cytotoxic activity demonstrated a 78% crown gall tumour inhibition and an ED50 = 4. 2 microg/ml in KB cells growth for the dichloromethane extract. A 56% decrease in the initial absorbance of DNA-Methyl Green complex could also be observed at 1000 microg/ml, suggesting the presence of compounds that interact with DNA.
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Affiliation(s)
- E Mongelli
- Cátedra de Biotecnología y Microbiología Industrial, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina
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Desmarchelier C, Witting Schaus F, Coussio J, Cicca G. Effects of Sangre de Drago from Croton lechleri Muell.-Arg. on the production of active oxygen radicals. J Ethnopharmacol 1997; 58:103-108. [PMID: 9406898 DOI: 10.1016/s0378-8741(97)00087-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The total reactive antioxidant potential (TRAP) of 'Sangre de Drago' from Croton lechleri (Euphorbiaceae) was determined by monitoring the intensity of luminol enhanced chemiluminescence enhanced by peroxyl radicals derived from thermolysis of 2,2'-azo-bis(2-amidinopropane). The TRAP index was calculated as 935.4 +/- 141 microM, measured as equivalents of Trolox concentration. On the other hand, the additive incorporation of lower concentrations yielded an instantaneous increase in chemiluminescence, suggesting a prooxidant activity at these levels. DNA sugar damage induced by Fe(II) salts was also used to determine the capacity of the latex to suppress hydroxyl radical-mediated degradation of DNA. As in the case of luminol enhanced chemiluminescence, Sangre de Drago was highly effective in reducing oxidation of DNA at higher concentrations, but showed an increase in the production of TBARS at lower doses, as compared to the control. Finally, antioxidant activity was tested using hydroperoxide-initiated chemiluminescence in rat liver homogenates, and the latex showed an increase in light emission, suggesting the presence of prooxidant compounds.
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Affiliation(s)
- C Desmarchelier
- Cátedra de Microbiología Industrial y Biotecnología: Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina
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Mongelli E, Desmarchelier C, Coussio J, Ciccia G. Biological studies of Bolax gummifera, a plant of the Falkland Islands used as a treatment of wounds. J Ethnopharmacol 1997; 56:117-121. [PMID: 9174972 DOI: 10.1016/s0378-8741(97)01516-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Aqueous and dichloromethane extracts of Bolax gummifera (Lam.) Sprengel (Apiaceae), a plant of the Falkland Islands used as a treatment of wounds, were studied in order to support the ethnopharmacological information related to the medicinal use of this plant. The antimicrobial, antioxidant and red blood cells membrane stabilizing activities were analyzed. The antimicrobial bioassay was carried out using the test turbidity method (OD 620 nm), the aqueous extract showing an 82% inhibition of Staphylococcus aureus but no activity against Pseudomonas aeruginosa. The dichloromethane extract inhibited both microorganisms: S. aureus in 94% and P. aeruginosa in 32%. No antioxidant activity could be observed using hydroperoxide-initiated chemiluminescence in rat liver homogenates. Investigations into the membrane stabilizing activity of the extracts were carried out using human red blood cells subjected to hypotonic- and heat-induced lyses. The aqueous extract showed an important stabilizing activity of the red blood cell membrane.
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Affiliation(s)
- E Mongelli
- Catedra de Microbiologia Industrial y Biotecnologia, Facultad de Farmacia v Bioquimica, Universidad de Buenas Aires, Argentina
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Salomón H, Pampuro S, Cavallaro L, García G, Coussio J, Campos R. Anti-human immunodeficiency virus type 1 (HIV-1) activity of Achyrocline flaccida Wein DC and Gamochaeta simplicicaulis aqueous extracts. Phytother Res 1997. [DOI: 10.1002/(sici)1099-1573(199702)11:1<82::aid-ptr35>3.0.co;2-s] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Desmarchelier C, Mongelli E, Coussio J, Ciccia G. Inhibition of lipid peroxidation and iron (II)-dependent DNA damage by extracts of Pothomorphe peltata (L). Miq. Braz J Med Biol Res 1997; 30:85-91. [PMID: 9222409 DOI: 10.1590/s0100-879x1997000100014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Leaves of Pothomorphe peltata (L.) Miq. (Piperaceae) are used locally as anti-inflammatory, antipyretic, hepatoprotective and diuretic infusions and to treat external ulcers and local infections in several parts of the Peruvian, Bolivian and Brazilian Amazon region. The antioxidant activity of different extracts of P. peltata was studied using the hydroperoxide-initiated chemiluminescence assay in liver homogenates, and the methanolic extract was found to have the highest antioxidant activity, with an IC50 = 4 micrograms/ml. Aqueous and dichloromethane extracts did not show antioxidant activity. The extracts were further evaluated using the thiobarbituric acid-reactive substances (TBARS) assay. Finally, an assay of DNA sugar damage induced by Fe (II) salt was used to determine the capacity of the extracts to suppress the oxidative degradation of DNA. All the extracts showed antioxidant activity in the latter two bioassays. The methanolic extract showed the highest activity in reducing oxidative damage to DNA, with an IC50 = 5 micrograms/ml. Since this extract was highly effective in reducing chemiluminescence and DNA damage, and because the latter activity could be due to the presence of compounds that bind to DNA, DNA-binding activity was studied using the DNA-methyl green (DNA-MG) bioassay. A 30% decrease in the initial absorbance of DNA-MG complex was observed in the methanolic extract at 1000 micrograms/ml, suggesting the presence of compounds that bind to genetic material. No DNA-binding activity was observed in the aqueous or dichloromethane extracts.
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Affiliation(s)
- C Desmarchelier
- Cátedra de Biotecnología y Microbiología Industrial, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina.
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Muschietti L, Van Baren C, Coussio J, Vila R, Clos M, Cañigueral S, Adzet T. Chemical Composition of the Leaf Oil ofSatureja odoraandSatureja parvifolia. Journal of Essential Oil Research 1996. [DOI: 10.1080/10412905.1996.9701042] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Payá M, Silla M, Vayá E, Alcaraz MJ, Coussio J, Ferraro G, Martino V, Hnatyszyn O, Debenedetti S, Broussalis A, Muschietti L. Inhibitory Effects of Various Extracts of Argentine Plant Species on Free-radical-mediated Reactions and Human Neutrophil Functions. Phytother Res 1996. [DOI: 10.1002/(sici)1099-1573(199605)10:3<228::aid-ptr823>3.0.co;2-l] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Desmarchelier C, Mongelli E, Coussio J, Ciccia G. Studies on the cytotoxicity, antimicrobial and DNA-binding activities of plants used by the Ese'ejas. J Ethnopharmacol 1996; 50:91-96. [PMID: 8866729 DOI: 10.1016/0378-8741(95)01334-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Thirty-nine extracts of 13 plants used traditionally as medicinal by the Ese'ejas were studied in order to determine their cytotoxic effect in the brine shrimp. Infusions showed no toxicity. Those plants that tested positive for methanolic and dichloromethane extracts were assayed for DNA-binding activity. Cytotoxicity was not due to the presence of compounds that interact with DNA. Antimicrobial activity of plants used to treat infectious diseases was also performed for the decoctions. These proved to be active against some of the test microrganisms used in the assay.
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Affiliation(s)
- C Desmarchelier
- Cátedra de Biotecnología y Microbiologia Industrial, Universidad de Buenos Aires, Argentina
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Mongelli E, Desmarchelier C, Coussio J, Ciccia G. [Antimicrobial activity and interaction with DNA of medicinal plants from the Peruvian Amazon region]. Rev Argent Microbiol 1995; 27:199-203. [PMID: 8850132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Decoctions of four plants used for the treatment of different infections by indigenous groups of the Peruvian Amazon, i.e. Abuta grandifolia, Cyperus articulatus, Gnaphalium spicatum and Pothomorphe peltata were evaluated for antimicrobial activity by the "stroke method" in agar plates. Tested organisms included Staphylococcus aureus, Escherichia coli, Salmonella gallinarum, Klebsiella pneumoniae, Candida albicans, Pseudomonas aeruginosa and Mycobacterium gordonae. All decoctions showed antimicrobial activity against at least one of the tested organisms. The A. grandifolia and C. articulatis decoctions partially inhibited the growth of P. aeruginosa. S. aureus was completely inhibited by C. articulatus decoction and only partially inhibited by G. spicatum and P. peltata. The A. grandifolia decoction also showed a partial inhibition against M. gordonae, showing a clear correlation between the ethnopharmacological use and the observed activity. Methanolic extracts of plants were analyzed by using the DNA-methyl green bioassay. The methanolic extract of P. peltata (concentration 1000 micrograms/ml) showed a decrease of 30% regarding to the initial absorbance of the DNA-MG complex suggesting the possible interaction with DNA.
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Affiliation(s)
- E Mongelli
- Cátedra de Biotecnología y Microbiología Industrial, Universidad de Buenos Aires, Argentina
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Abstract
Latexes from Croton erythrochilus, Ficus inspidia and Sapium marmieri used traditionally as medicinal by the Ese'ejas were analyzed for bioactivity. The assays run were: the brine shrimp toxicity microplate bioassay, the wheat rootlet growth inhibition and the DNA-methyl green bioassay. The three latexes showed cytotoxicity to the brine shrimp and concentration-related growth inhibition. No interaction with the DNA-methyl green complex was observed with any of the three latex samples. The field bioassays described has demonstrated to be useful for supporting ethnobotanical information.
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Affiliation(s)
- E Mongelli
- Cátedra de Biotecnología y Microbiología Industrial, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín, Argentina
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Garcia G, Cavallaro L, Broussalis A, Ferraro G, Martino V, De Torres R, Coussio J, Campos R. Antiviral activity ofAchyrocline flaccida Wein DC aqueous extract. Phytother Res 1995. [DOI: 10.1002/ptr.2650090404] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Cavallaro L, Garcia G, Broussalis A, Ferraro X, Martino V, Coussio J, de Torres R, Campos R. Antiherpeticin vitro activity ofGamochaeta simplicicaulis extract. Phytother Res 1995. [DOI: 10.1002/ptr.2650090304] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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