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Schmeda-Hirschmann G, Burgos-Edwards A, Rojas de Arias A, López-Torres C, Palominos C, Fuentes-Retamal S, Herrera Y, Dubois-Camacho K, Urra FA. A paraguayan toad Rhinella schneideri preparation based on Mbya tradition increases mitochondrial bioenergetics with migrastatic effects dependent on AMPK in breast cancer cells. JOURNAL OF ETHNOPHARMACOLOGY 2022; 294:115344. [PMID: 35526731 DOI: 10.1016/j.jep.2022.115344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/17/2022] [Accepted: 05/02/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In Paraguay, healers from the Mbya culture treat cancer with a recipe prepared with the native toad Rhinella schneideri. However, the chemical composition and biological effects of the recipe remain unknown. AIM OF THE STUDY The aim is to determine the composition of the traditional preparation made using the toad R. schneideri and to evaluate its effect on human breast cancer (BC) cells. MATERIALS AND METHODS The metabolites contained in the preparation were concentrated using XAD-7 resin, and the concentrate was analyzed by HPLC-MS/MS. The effect of the preparation was assessed in normal (MCF10F) and BC cells (MDA-MB-231 and MCF7). The mitochondrial membrane potential (Δψm), reactive oxygen species (ROS) levels, and cell cycle progression were determined by flow cytometry. The oxygen consumption rate (OCR) was measured by Clark electrode, and fibronectin-dependent migration in normoxia and hypoxia-like conditions were evaluated by transwell assay. RESULTS From the Amberlite-retained extract from the preparation, 24 compounds were identified, including alkaloids, amino acids, bufadienolides, and flavonoids, among others. The crude extract (CE) did not affect cell cycle progression and viability of BC cell lines. Moreover, it did not make cancer cells more sensitive to the cytotoxic effect of the chemotherapeutics doxorubicin and teniposide. On the other hand, the CE reduced the menadione-induced ROS production and increased NADH, Δψm, and the OCR. Respiratory complexes I and III as well as ATP synthase levels were increased in an AMPK-dependent manner. Moreover, the CE inhibited the migration of BC cells in normoxia and a hypoxia-like condition using CoCl2 as a HIF1α-stabilizing agent. This latter effect involved an AMPK-dependent reduction of HIF1α levels. CONCLUSIONS The Paraguayan toad recipe contains metabolites from the toad ingredient, including alkaloids and bufadienolide derivatives. The CE lacks cytotoxic effects alone or in combination with chemotherapeutics. However, it increases mitochondrial bioenergetics and inhibits the cancer cell migration in an AMPK-dependent manner in BC cells. This is the first report of the in vitro anticancer effect of a traditional Rhinella sp. toad preparation based on Mbya tradition.
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Affiliation(s)
- Guillermo Schmeda-Hirschmann
- Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad de Talca, Campus Lircay, Talca, 3460000, Chile.
| | - Alberto Burgos-Edwards
- Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad de Talca, Campus Lircay, Talca, 3460000, Chile; Universidad Nacional de Asunción, Facultad de Ciencias Químicas, Campus San Lorenzo, P.O. Box 1055, Paraguay
| | - Antonieta Rojas de Arias
- Centro para el Desarrollo de la Investigación Científica (CEDIC), Manduvira 635 entre 15 de Agosto y O' Leary, Barrio La Encarnación, Asunción, Código Postal 1255, Paraguay
| | - Camila López-Torres
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, 8380453, Chile; Network for Snake Venom Research and Drug Discovery, Santiago, Chile
| | - Charlotte Palominos
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, 8380453, Chile; Network for Snake Venom Research and Drug Discovery, Santiago, Chile
| | - Sebastián Fuentes-Retamal
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, 8380453, Chile; Network for Snake Venom Research and Drug Discovery, Santiago, Chile
| | - Yarela Herrera
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, 8380453, Chile; Network for Snake Venom Research and Drug Discovery, Santiago, Chile
| | - Karen Dubois-Camacho
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, 8380453, Chile; Network for Snake Venom Research and Drug Discovery, Santiago, Chile
| | - Félix A Urra
- Clinical and Molecular Pharmacology Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, 8380453, Chile; Network for Snake Venom Research and Drug Discovery, Santiago, Chile.
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Ramos YJ, Felisberto JS, Gouvêa-Silva JG, de Souza UC, da Costa-Oliveira C, de Queiroz GA, Guimarães EF, Sadgrove NJ, de Lima Moreira D. Phenoplasticity of Essential Oils from Two Species of Piper (Piperaceae): Comparing Wild Specimens and Bi-Generational Monoclonal Cultivars. PLANTS 2022; 11:plants11131771. [PMID: 35807723 PMCID: PMC9269527 DOI: 10.3390/plants11131771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 06/18/2022] [Accepted: 06/27/2022] [Indexed: 11/25/2022]
Abstract
This study tested the hypothesis that “clonal chemical heritability is a crucial factor for the conservation of chemical uniformity of Piper essential oils in controlled monoclonal cultivation”. We asexually propagated first and second-generation clones of two medicinal and aromatic species, Piper gaudichaudianum Kunth and Piper mollicomum Kunth (Piperaceae), for use as experimental models since they show high chemical plasticity in the wild. Leaves from wild specimens of both species, and their respective cultivated specimens, were hydrodistilled in a Clevenger-type apparatus to produce essential oils (EOs). EOs were chemically characterised by GC-MS and GC-FID. The analysis identified 63 compounds in EO of P. mollicomum, which were predominantly monoterpenes, and 59 in EO of P. gaudichaudianum, which were predominantly sesquiterpenes. Evaluation of chemical diversity and oxi-reduction indices showed a loss of chemical homology across the intergenerational cline. Chemometric analysis indicated higher chemical plasticity between wild and intergenerational specimens of P. mollicomum, than for P. gaudichaudianum. EO compounds were significantly less oxidized throughout the generations in both species. Therefore, while clonal heritability is crucial to chemical homology, significant chemical plasticity is likely to occur when cultivated from wild specimens.
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Affiliation(s)
- Ygor Jessé Ramos
- Natural Products and Biochemistry Laboratory, Botanical Garden of Rio de Janeiro Research Institute, Rio de Janeiro Botanical Garden, Rio de Janeiro 22460-030, Brazil; (Y.J.R.); (J.S.F.); (J.G.G.-S.); (U.C.d.S.)
- Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (C.d.C.-O.); (G.A.d.Q.); (E.F.G.)
| | - Jéssica Sales Felisberto
- Natural Products and Biochemistry Laboratory, Botanical Garden of Rio de Janeiro Research Institute, Rio de Janeiro Botanical Garden, Rio de Janeiro 22460-030, Brazil; (Y.J.R.); (J.S.F.); (J.G.G.-S.); (U.C.d.S.)
- Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (C.d.C.-O.); (G.A.d.Q.); (E.F.G.)
| | - João Gabriel Gouvêa-Silva
- Natural Products and Biochemistry Laboratory, Botanical Garden of Rio de Janeiro Research Institute, Rio de Janeiro Botanical Garden, Rio de Janeiro 22460-030, Brazil; (Y.J.R.); (J.S.F.); (J.G.G.-S.); (U.C.d.S.)
- Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (C.d.C.-O.); (G.A.d.Q.); (E.F.G.)
| | - Ulisses Carvalho de Souza
- Natural Products and Biochemistry Laboratory, Botanical Garden of Rio de Janeiro Research Institute, Rio de Janeiro Botanical Garden, Rio de Janeiro 22460-030, Brazil; (Y.J.R.); (J.S.F.); (J.G.G.-S.); (U.C.d.S.)
- Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (C.d.C.-O.); (G.A.d.Q.); (E.F.G.)
| | - Claudete da Costa-Oliveira
- Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (C.d.C.-O.); (G.A.d.Q.); (E.F.G.)
| | - George Azevedo de Queiroz
- Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (C.d.C.-O.); (G.A.d.Q.); (E.F.G.)
| | - Elsie Franklin Guimarães
- Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (C.d.C.-O.); (G.A.d.Q.); (E.F.G.)
| | - Nicholas John Sadgrove
- Jodrell Science Laboratory, Royal Botanic Gardens Kew, Richmond TW9 3DS, UK
- Correspondence: (N.J.S.); (D.d.L.M.)
| | - Davyson de Lima Moreira
- Natural Products and Biochemistry Laboratory, Botanical Garden of Rio de Janeiro Research Institute, Rio de Janeiro Botanical Garden, Rio de Janeiro 22460-030, Brazil; (Y.J.R.); (J.S.F.); (J.G.G.-S.); (U.C.d.S.)
- Institute of Biology, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (C.d.C.-O.); (G.A.d.Q.); (E.F.G.)
- Correspondence: (N.J.S.); (D.d.L.M.)
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Silvano RAM, Pereyra PER, Begossi A, Hallwass G. Which fish is this? Fishers know more than 100 fish species in megadiverse tropical rivers. Facets (Ott) 2022. [DOI: 10.1139/facets-2021-0136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Ethnobiological studies on folk, common, or popular names that fishers use to identify fish can help improve fisheries monitoring and collaborations between fishers and researchers. This study investigates fishers’ knowledge (recognition, naming, and habitat use) on 115 and 119 fish species, respectively, in the Negro and Tapajos Rivers, two megadiverse rivers in the Brazilian Amazon, and investigates the relationship between such knowledge and fish importance to fisheries, fish abundance, and fish size. We also compared fishers’ perceptions on fisheries and fish abundance with literature data on fish harvests and fish sampling. We interviewed 16 fishers in 16 communities (one fisher per community, 8 communities along each river). These fishers recognized an average of 91 ± 10.4 species in the Negro River and 115 ± 7.2 species in the Tapajos River, but all fishers recognized 114 species in Negro and all species in Tapajos. The fishers’ knowledge of fish species was positively related to fishers’ perceptions on fish abundance, size, and importance to fisheries in the Negro, but only positively related to fish size in the Tapajos. Our results highlight the usefulness of fishers’ knowledge to providing data on use and cultural relevance of fish species in high diversity aquatic ecosystems.
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Affiliation(s)
- Renato A. M. Silvano
- Departamento de Ecologia e Programa de Pós-Graduação em Ecologia – IB, Universidade do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil
- Fisheries and Food Institute – FIFO , Rio de Janeiro, RJ, Brazil
| | - Paula E. R. Pereyra
- Departamento de Ecologia e Programa de Pós-Graduação em Ecologia – IB, Universidade do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil
| | - Alpina Begossi
- Fisheries and Food Institute – FIFO , Rio de Janeiro, RJ, Brazil
- Núcleo de Estudos e Pesquisas em Alimentação – NEPA, CAPESCA, UNICAMP, Campinas, SP, Brazil and PG Unisanta, Santos, SP, Brazil
| | - Gustavo Hallwass
- Fisheries and Food Institute – FIFO , Rio de Janeiro, RJ, Brazil
- Universidade Federal do Oeste do Pará (UFOPA), Pará, Brazil
- Current address: Instituto de Ciências, Tecnologia e Inovação, Universidade Federal de Lavras (UFLA), São Sebastião do Paraíso, Minas Gerais, Brazil
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