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Catálogo Taxonômico da Fauna do Brasil: Setting the baseline knowledge on the animal diversity in Brazil Brasil
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Boeger, Walter A.
; Valim, Michel P.
; Zaher, Hussam
; Rafael, José A.
; Forzza, Rafaela C.
; Percequillo, Alexandre R.
; Serejo, Cristiana S.
; Garraffoni, André R.S.
; Santos, Adalberto J.
; Slipinski, Adam
; Linzmeier, Adelita M.
; Calor, Adolfo R.
; Garda, Adrian A.
; Kury, Adriano B.
; Fernandes, Agatha C.S.
; Agudo-Padrón, Aisur I.
; Akama, Alberto
; Silva Neto, Alberto M. da
; Burbano, Alejandro L.
; Menezes, Aleksandra
; Pereira-Colavite, Alessandre
; Anichtchenko, Alexander
; Lees, Alexander C.
; Bezerra, Alexandra M.R.
; Domahovski, Alexandre C.
; Pimenta, Alexandre D.
; Aleixo, Alexandre L.P.
; Marceniuk, Alexandre P.
; Paula, Alexandre S. de
; Somavilla, Alexandre
; Specht, Alexandre
; Camargo, Alexssandro
; Newton, Alfred F.
; Silva, Aline A.S. da
; Santos, Aline B. dos
; Tassi, Aline D.
; Aragão, Allan C.
; Santos, Allan P.M.
; Migotto, Alvaro E.
; Mendes, Amanda C.
; Cunha, Amanda
; Chagas Júnior, Amazonas
; Sousa, Ana A.T. de
; Pavan, Ana C.
; Almeida, Ana C.S.
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; Pes, Ana M.O.
; Carmignotto, Ana P.
; Wengrat, Ana P.G. da Silva
; Dornellas, Ana P.S.
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; Puker, Anderson
; Morandini, André C.
; Ferreira, André da S.
; Martins, André L.
; Esteves, André M.
; Fernandes, André S.
; Roza, André S.
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; Ribeiro-Costa, Cibele S.
; Santos, Cinthya S.G.
; Justino, Cíntia E.L.
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; Bonecker, Claudia C.
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; Gonçalves, Clayton C.
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; Schwertner, Cristiano F.
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; Rodrigues, Diego F.
; Pádua, Diego G. de
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; Dolibaina, Diego R.
; Amaral, Diogo C.
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; Maurício, Giovanni N.
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; Muricy, Guilherme
; Brito, Guilherme R.R.
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; Tomaszewska, Wioletta
; Wosiacki, Wolmar B.
; Ovando, Ximena M.C.
; Leite, Yuri L.R.
.
ABSTRACT The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others. publications problem uptodate up date classifications context exception (CTFB http//fauna.jbrj.gov.br/, httpfaunajbrjgovbr http //fauna.jbrj.gov.br/ , jbrj gov br (http://fauna.jbrj.gov.br/) 2015 Brazil 80 specialists 1 2024 133691 133 691 133,69 125138 125 138 125,13 82.3%, 823 82 3 (82.3% 102000 102 000 102,00 7.69%, 769 7 69 (7.69% 11000 11 11,00 . 3,567 3567 567 (3,56 2,292 2292 2 292 (2,29 1,833 1833 833 (1,83 1,447 1447 447 (1,44 1000 1,00 831 (83 628 (62 606 (60 520 (52 50 users science health biology law anthropology education others http//fauna.jbrj.gov.br/ faunajbrjgovbr //fauna.jbrj.gov.br (http://fauna.jbrj.gov.br/ 201 8 202 13369 13 133,6 12513 12 125,1 82.3% (82.3 10200 10 00 102,0 7.69% 76 6 (7.69 1100 11,0 3,56 356 56 (3,5 2,29 229 29 (2,2 1,83 183 83 (1,8 1,44 144 44 (1,4 100 1,0 (8 62 (6 60 52 (5 5 http//fauna.jbrj.gov.br (http://fauna.jbrj.gov.br 20 1336 133, 1251 125, 82.3 (82. 1020 0 102, 7.69 (7.6 110 11, 3,5 35 (3, 2,2 22 (2, 1,8 18 (1, 1,4 14 4 ( 82. (82 7.6 (7. 3, (3 2, (2 (1 7. (7
2.
How many species of Mollusca are there in Brazil? A collective taxonomic effort to reveal this still unknown diversity Brazil
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Machado, Fabrizio M.
; Miranda, Marcel S.
; Salvador, Rodrigo B.
; Pimenta, Alexandre D.
; Côrtes, Mariana O.
; Gomes, Jaime A.J.
; Miyahira, Igor C.
; Agudo-Padrón, Ignacio
; Oliveira, Cléo D.C.
; Caetano, Carlos H.S.
; Coelho, Paulo R.S.
; D’Ávila, Sthefane
; Arruda, Eliane P. de
; Almeida, Sérgio M. de
; Gomes, Suzete R.
; Alvim, Juliana
; Galvão-Filho, Hilton
; L. Ferreira-Júnior, Augusto
; Marques, Rodrigo C.
; Martins, Inês
; Souza, Leonardo S. de
; Arruda, Janine O.
; Cavallari, Daniel C.
; Santos, Sonia B. dos
; Pedro, Natan C.
; Salles, Anna C. de A.
; Dornellas, Ana P.S.
; Lima, Tarcilla C. de
; Amaral, Vanessa S. do
; Silva, Fernanda S.
; Passos, Flávio D.
; Thiengo, Silvana S.
; Leite, Tatiana S.
; Simone, Luiz R.L.
.
ABSTRACT The expression ‘you need to know to conserve’ is a well-known cliche among biologists. Documenting the richness of a group of organisms is the first step towards understanding biodiversity and preparing efficient conservation plans. In this context, many efforts have been made to quantify the number of species on Earth and estimate the number of species still unknown to science. A few countries have complete and integrated databases estimating the approximate number of species recorded for their territory, particularly in the Global South. In Brazil, a country of continental dimensions, revealing the richness of the second most diverse clade of invertebrates (=Mollusca) has been a goal of taxonomists. Recently, in an unprecedented, collective, and integrated effort among Brazilian malacologists, it was possible to estimate how many valid species of molluscs are there in Brazil. In this effort, more than 30 mollusc experts joined together to update the Taxonomic Catalogue of the Brazilian Fauna (TCBF), a governmental website that allows a quick and real-time updating of all Metazoan. So far, more than 5,000 updates have been made in TCBF, indicating the presence of 3,552 valid species of molluscs in Brazil, distributed among the main clades as follows: Caudofoveata (10 spp.), Solenogastres (6 spp.), Polyplacophora (35 spp.), Scaphopoda (43 spp.), Cephalopoda (92 spp.), Bivalvia (629 spp.) and Gastropoda (2,737 spp.). The present study, in addition to demonstrating for the first time the richness of Brazilian molluscs, also presents the state of the art of this important phylum of invertebrates highlighting its most representative and neglected groups. you conserve wellknown well known biologists plans context science territory South Brazil dimensions =Mollusca Mollusca (=Mollusca taxonomists Recently unprecedented collective malacologists 3 TCBF , (TCBF) realtime real Metazoan far 5000 5 000 5,00 3552 552 3,55 follows 10 (1 spp., spp spp. 6 ( 35 (3 43 (4 92 (9 629 (62 2,737 2737 2 737 (2,73 spp.. . study groups (TCBF 500 00 5,0 355 55 3,5 1 4 9 62 2,73 273 73 (2,7 50 0 5, 3, 2,7 27 7 (2, 2, (2
3.
STUDY OF THE DIAMETER OF THE OBLIQUE CORRIDOR IN LATERAL DECUBITUS AND DORSAL DECUBITUS: RADIOLOGICAL STUDY
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BATISTA, MATHEUS CARVALHO
; AMARAL, RODRIGO AUGUSTO DO
; MELO FILHO, FERNANDO ANTONIO DE
; POKORNY, GABRIEL
; DAHER, MURILO
; PRATALI, RAPHAEL
; ARNONI, DANIEL
; MORIGUCHI, RAFAEL
; PIMENTA, LUIZ
; HERRERO, CARLOS FERNANDO P. S.
.
RESUMO Introdução: A doença degenerativa do disco intervertebral e seu impacto sobre a qualidade de vida quando está associada a desalinhamento sagital é tema atual na literatura. A técnica conhecida como OLIF deriva da necessidade de uso de cages anteriores para promover estabilização do segmento afetado, descompressão indireta, restauração da lordose segmentar e equilíbrio sagital. Métodos: Estudo de centro único, não randomizado, comparativo, observacional. Foram medidas as seguintes variáveis por ressonância magnética de coluna lombar em decúbito dorsal e lateral, estabelecendo comparação entre o tamanho do corredor OLIF nos segmentos L3-L4 e L4-L5, assim como comparação entre o tamanho do corredor entre as diferentes posições. Resultados: Não houve diferença entre o tamanho do corredor na comparação entre os decúbitos. Entretanto, ao comparar os níveis L3-L4 e L4-L5 houve diferença significativa no tamanho do corredor, tanto na posição lateral quanto na posição dorsal. Conclusões: O presente estudo não demonstrou diferença detamanho do corredor OLIF em L3-L4 e L4-L5 em diferentes decúbitos, sugerindo que a avaliação do corredor em ressonância magnética convencional parece ser segura e reflete o tamanho real quando posicionado para execução da técnica OLIF. Nível de evidência III; Estudo retrospectivo.
ABSTRACT Introduction: Degenerative intervertebral disc disease and its impact on quality of life when associated with sagittal misalignmentis a current topic in the literature. The technique known as OLIF derives from the need to use anterior cage stop romote stabilization of the affected segment, indirect decompression, restoration of segmental lordosis, and sagittal balance. Methods: Single-center, non-randomized, comparative, observational study. The following variables were measured using magnetic resonance imaging of the lumbar spine in dorsal and lateral decubitus, establishing a comparison between the size of the OLIF corridor in the L3L4 and L4L5 segments, as well as a comparison of corridor size between the different positions. Results: There was no difference incorridor size in the comparison between decubitus. However, when the L3L4 and L4L5 levels were compared, there was a significant difference in the size of the corridor in both the lateral and dorsal positions. Conclusion: The present study did not show any difference between the size of the OLIF corridor in L3L4 and L4L5 in the different decubitus, suggesting that thee valuation of the corridor in convention al magnetic resonance images appearstobe safe andreflects the actual size when positio ned for performing the OLIF technique. Level of evidence III; Retrospective study.
RESUMEN Introducción: La enfermedad degenerativa del disco intervertebral y su impacto en lacalidad de vida cuando se asocia a una desalineación sagital es un tema actualenla literatura. La técnica conocida como OLIF deriva de la necesidad de utilizar cages anteriores para favorecer la estabilización del segmento afectado, la descompresión indirecta, la restauración de la lordosis segmentaria y el equilibrio sagital. Métodos: Estudio observacional comparativo unicéntrico, no aleatorizado. Se midieron las siguientes variables mediante resonancia magnética de la columna lumbar endecúbito dorsal y lateral, estableciendo la comparación entre el tamaño del corredor OLIF en los segmentos L3L4 y L4L5, así como la comparación entre el tamaño del corredor entre las diferentes posiciones. Resultados: No hubo diferencia entre el tamaño del corredor en la comparación entre decúbitos. Sin embargo, al comparar los niveles L3-L4 y L4-L5, hubo una diferencia significativa en el tamaño del corredor tanto en posición lateral como dorsal. Conclusiones: El presente estudio no mostró diferencias en el tamaño del corredor OLIF en L3-L4 y L4-L5, en diferentes posiciones de decúbito, lo que sugiere que la evaluación del corredor en la resonancia magnética convenciona lparece ser segura y refleja el tamaño real cuando se posiciona para realizar la técnica OLIF. Nivel de evidencia III; Estudio retrospectivo
4.
High acceptability of PrEP teleconsultation and HIV self-testing among PrEP users during the COVID-19 pandemic in Brazil
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Hoagland, Brenda
; Torres, Thiago S.
; Bezerra, Daniel R.B.
; Benedetti, Marcos
; Pimenta, Cristina
; Veloso, Valdilea G.
; Grinsztejn, Beatriz
.
Brazilian Journal of Infectious Diseases
- Métricas do periódico
ABSTRACT In March 2020, telemedicine and HIV self-testing were adopted by Brazilian Public Health services to minimize disruptions in pre-exposure prophylaxis (PrEP) access and delivery during the COVID-19 pandemic. To understand the acceptability of PrEP teleconsultation and HIV self-testing, we conducted a web-based study during social distancing period (April–May, 2020) among men who have sex with men and transgender/non-binary individuals using social media. Out of the 2375 HIV negative respondents, 680 reported PrEP use and were included in this analysis. Median age was 33 years (IQR: 28–40), 98% cisgender men, 56% white, 74% high education, and 68% middle/high income. Willingness to use HIVST was 79% and 32% received an HIV self-testing during social distancing period. The majority reported preference for PrEP/HIV self-testing home delivery instead of collecting at the service. PrEP teleconsultation was experienced by 21% and most reported feeling satisfied with the procedures. High acceptability of PrEP teleconsultation was reported by 70%. In ordinal logistic model, having higher education was associated with high aceptability of PrEP teleconsultation (aOR:1.62; 95%CI: 1.07–2.45). Our results point out that PrEP teleconsultation and PrEP/HIV self-testing home delivery could be implemented by PrEP services in Brazil to avoid PrEP shortage during the COVID-19 pandemic and thereafter as an option to increase retention and adherence.
https://doi.org/10.1016/j.bjid.2020.11.002
208 downloads
5.
Telemedicine as a tool for PrEP delivery during the COVID-19 pandemic in a large HIV prevention service in Rio de Janeiro-Brazil
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Hoagland, Brenda
; Torres, Thiago S.
; Bezerra, Daniel R.B.
; Geraldo, Kim
; Pimenta, Cristina
; Veloso, Valdilea G.
; Grinsztejn, Beatriz
.
Brazilian Journal of Infectious Diseases
- Métricas do periódico
Abstract COVID-19 public health responses such as social distancing and community containment measures protocols are critical to preventing and containing the spread of coronavirus. Brazil accounts for almost half of Latin American HIV cases and Rio de Janeiro is the city with the second largest number of AIDS. Clinical appointments and pharmacy antiretroviral refills may be impaired due to restricted traffic and possible lockdowns, preventing people living with HIV and those using PrEP from accessing needed antiretrovirals. We hereby describe the telemedicine procedures implemented in a large PrEP delivery service in Rio de janeiro in the context of the COVID-19 pandemic. At the initial teleconsultation, individuals undergoe HIV rapid testing and are assessed by phone for PrEP related procedures. Individuals receive a digital prescription to retrieve a 120-day PrEP supply plus two HIV self-test kits. Subsequent follow-up teleconsultations will be performed remotely by phone call, including instructions for the HIV self-test performance, which results are to be sent using a digital picture. Participants will attend the service only for PrEP refill. The use of telemedicine procedures is being effective to avoid PrEP shortage and reduce the time PrEP users spend at the service during the COVID-19 pandemic and social distancing recommendations.
https://doi.org/10.1016/j.bjid.2020.05.004
680 downloads
6.
Biochemical characterization and cytotoxic effect of the skin secretion from the red-spotted Argentina frog Argenteohyla siemersi (Anura: Hylidae)
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Fusco, Luciano S.
; Cajade, Rodrigo
; Piñeiro, Jose M.
; Torres, Ana M.
; Silva, Igor R. F. da
; Hyslop, Stephen
; Leiva, Laura C.
; Pimenta, Daniel C.
; Bustillo, Soledad
.
Journal of Venomous Animals and Toxins including Tropical Diseases
- Métricas do periódico
Abstract Background: Argenteohyla siemersi (red-spotted Argentina frog) is a casque-headed tree frog species belonging to the Hylidae family. This species has a complex combination of anti-predator defense mechanisms that include a highly lethal skin secretion. However, biochemical composition and biological effects of this secretion have not yet been studied. Methods: The A. siemersi skin secretion samples were analyzed by mass spectrometry and chromatographic analysis (MALDI-TOF/MS, RP-HPLC and GC-MS). Proteins were also studied by SDS-PAGE. Among the biological activities evaluated, several enzymatic activities (hemolytic, phospholipase A2, clotting, proteolytic and amidolytic) were assessed. Furthermore, the cytotoxic activity (cytolysis and fluorescence staining) was evaluated on myoblasts of the C2C12 cell line. Results: The MALDI-TOF/MS analysis identified polypeptides and proteins in the aqueous solution of A. siemersi skin secretion. SDS-PAGE revealed the presence of proteins with molecular masses from 15 to 55 kDa. Steroids, but no alkaloids or peptides (less than 5 KDa), were detected using mass spectrometry. Skin secretion revealed the presence of lipids in methanolic extract, as analyzed by CG-MS. This secretion showed hemolytic and phospholipase A2 activities, but was devoid of amidolytic, proteolytic or clotting activities. Moreover, dose-dependent cytotoxicity in cultured C2C12 myoblasts of the skin secretion was demonstrated. Morphological analysis, quantification of lactate dehydrogenase release and fluorescence staining indicated that the cell death triggered by this secretion involved necrosis. Conclusions: Results presented herein evidence the biochemical composition and biological effects of A. siemersi skin secretion and contribute to the knowledge on the defense mechanisms of casque-headed frogs.
https://doi.org/10.1590/1678-9199-jvatitd-2019-0078
1203 downloads
7.
Exposure to an extremely low-frequency electromagnetic field only slightly modifies the proteome of Chromobacterium violaceum ATCC 12472
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Baraúna, Rafael A.
; Santos, Agenor V.
; Graças, Diego A.
; Santos, Daniel M.
; Ghilardi Júnior, Rubens
; Pimenta, Adriano M. C.
; Carepo, Marta S. P.
; Schneider, Maria P.C.
; Silva, Artur
.
Several studies of the physiological responses of different organisms exposed to extremely low-frequency electromagnetic fields (ELF-EMF) have been described. In this work, we report the minimal effects of in situ exposure to ELF-EMF on the global protein expression of Chromobacterium violaceum using a gel-based proteomic approach. The protein expression profile was only slightly altered, with five differentially expressed proteins detected in the exposed cultures; two of these proteins (DNA-binding stress protein, Dps, and alcohol dehydrogenase) were identified by MS/MS. The enhanced expression of Dps possibly helped to prevent physical damage to DNA. Although small, the changes in protein expression observed here were probably beneficial in helping the bacteria to adapt to the stress generated by the electromagnetic field.
https://doi.org/10.1590/S1415-4757382220140240
1808 downloads
8.
Antimicrobial, antioxidant and cytotoxicity potential of Manihot multifida (L.) Crantz (Euphorbiaceae)
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FABRI, RODRIGO L.
; SÁ, DANIEL S. DE
; PEREIRA, ANA PATRÍCIA O.
; SCIO, ELITA
; PIMENTA, DANIEL S.
; CHEDIER, LUCIANA M.
.
Anais da Academia Brasileira de Ciências
- Métricas do periódico
Manihot multifida(L.) Crantz (Euphorbiaceae) é amplamente utilizada na medicina popular no tratamento de feridas infectadas. Esse estudo avaliou o potencial antioxidante e antimicrobiano in vitrode extratos dessa espécie frente às cepas bacterianas Gram-positiva e Gram-negativa e fungo que causam infecções em humanos. Os extratos mostraram concentração inibitória mínima (CIM) variando de 39 a 2500µg/mL para a atividade antimicrobiana. O extrato metanólico de frutos, hexânico e aquoso de folhas mostraram atividade muito forte para Candida albicans (ATCC 18804), com CIM de 39µg/mL. Além disso, o extrato metanólico de folhas deM. multifidamostrou potencial antioxidante contra o radical DPPH com valor de concentração inibitória (CI50) de 46,9μg/mL, seguido pelo extrato hexânico de folhas, com valor de CI50 de 59,2μg/mL. A atividade citotóxica foi maior no extrato hexânico de folhas com concentração letal (CL50) de 15,6μg/mL. Esses resultados sugerem que M. multifida possui atividades antimicrobiana e antioxidante interessantes. Sendo assim, corroboram o uso popular dessa espécie no tratamento de infecções fúngicas, uma vez que demonstrou uma atividade significativa frente à C. albicans.
Manihot multifida (L.) Crantz (Euphorbiaceae) is widely used in popular medicine for the treatment of infected wounds. This study evaluated thein vitro antioxidant and antimicrobial potential of this species against strains of Gram-positive and Gram-negative bacteria and fungi, known to cause infections in humans. The extracts showed minimal inhibitory concentration (MIC) varying from 39 to 2500 µg/mL for antimicrobial activity. The methanolic extract of fruits, aqueous and hexane extracts of leaves showed a very strong activity against Candida albicans(ATCC 18804) with MIC of 39 µg/mL. Furthermore, the methanolic extract of M. multifida leaves exhibited DPPH (1,1-diphenyl-2-picrylhydrazyl) scavenging potential with inhibitory concentration (IC50) values of 46.9 μg/mL, followed by hexane extract of leaves with IC50 values of 59.2 μg/mL. The cytotoxic activity against brine shrimp was stronger for the methanolic extract of leaves (lethal concentration - LC50 of 15.6 µg/mL). These results suggest that M. multifida has interesting antimicrobial and antioxidant activities. Moreover, these results corroborate the popular use of this specie in treating fungal infections since it demonstrates significant activity againstC. albicans.
https://doi.org/10.1590/0001-3765201520130251
3356 downloads
9.
Synergy in ethnopharmacological data collection methods employed for communities adjacent to urban forest
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Conde, Bruno E.
; Siqueira, Aline M. de
; Rogério, Izabela T.S.
; Marques, Juçara S.
; Borcard, Guiomar G.
; Ferreira, Marina Q.
; Chedier, Luciana M.
; Pimenta, Daniel S.
.
Revista Brasileira de Farmacognosia
- Métricas do periódico
Several ethnopharmacological techniques used for sampling and data collection cannot be used as they are for different areas and cultural groups. This study combined and adapted reported ethnopharmacological research techniques for sampling and data collection of medicinal plants in forests adjacent to urban areas, and evaluated their potential applicability. The areas considered in this study included the neighborhoods adjacent to the Botanical Garden of the Federal University of Juiz de Fora, MG, Brazil. Application of combined ethnopharmacological research techniques ensured a practical strategy and reliability in the collected data. Preliminary interviews with 303 questionnaires constituted the general sampling of the population, and interviews with eleven people knowledgeable of medicinal plants constituted specific sampling. Using the two techniques, it was possible to identify sixty species, which are stored in the CESJ Herbarium. Given the lack of specific ethnopharmacological research tools in the context of multi-cultural urban communities located adjacent to forest areas that require preservation, this study shows that the synergistic use of techniques provides more reliable and reproducible data. The combined use of these techniques provides safety and simplifies the tools for future use in similar studies.
https://doi.org/10.1016/j.bjp.2014.06.001
1788 downloads
10.
Chemical composition and cytotoxicity activity of the essential oil of Pterodon emarginatus
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Dutra, Rafael C.
; Pittella, Frederico
; Dittz, Dalton
; Marcon, Rodrigo
; Pimenta, Daniel S.
; Lopes, Miriam T. P.
; Raposo, Nádia R. B.
.
Revista Brasileira de Farmacognosia
- Métricas do periódico
Pterodon emarginatus Vogel, Fabaceae, is a native aromatic tree distributed by central region of Brazil. Hydroalcoholic infusions of the seeds are used in folk medicine for their anti-rheumatic and anti-inflammatory properties. The objective of this work was identified the chemical components and verify the cytotoxic effect of the essential oil (EO) from P. emarginatus seeds. Thus, the EO of P. emarginatus seeds was analyzed by GC/MS analysis followed by brine shrimp lethality test and cytotoxic activity against tumor cell lines and human peripheral mononuclear blood cells (PBMC). The cancer cell lines tested were C6 (rat glioma), MeWo (human melanoma), CT26.WT (mouse colon carcinoma), MDA (human breast cancer), A549 (human lung carcinoma), B16-F1 (mouse melanoma), CHO-K1 (hamster ovary cell) and BHK-21 (hamster kidney fibroblast). Eleven compounds were identified by GC and CG/MS analyses. The main compounds with concentrations higher than 5% were β-elemene (15.3%), trans-caryophyllene (35.9%), α-humulene (6.8%), germacrene-D (9.8%), bicyclo germacrene (5.5%) and spathulenol (5.9%). The EO of P. emarginatus seeds showed toxicity to Artemia salina (LC50 1.63 µg/mL) and was active against all the cell lines tested. The potent cytotoxic activity had IC50 values ranging from 24.9 to 47 µg/mL. However, EO (1-100 µg/mL) had less cytotoxicity in PBMCs isolated from a healthy subject. In summary, the present study showed the potential antiproliferative of the EO of P. emarginatus seeds.
3991 downloads
11.
Effects of light intensity on the distribution of anthocyanins in Kalanchoe brasiliensis Camb. and Kalanchoe pinnata (Lamk.) Pers
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Cruz, Bruna P.
; Chedier, Luciana M.
; Peixoto, Paulo H.P.
; Fabri, Rodrigo L.
; Pimenta, Daniel S.
.
Anais da Academia Brasileira de Ciências
- Métricas do periódico
Este trabalho compara duas espécies medicinais de Kalanchoe utilizadas muitas vezes de forma indiferenciada pela população, quanto à distribuição de antocianinas sob influência de quatro níveis de luminosidade por 6 meses. Para a análise morfoanatômica foi seccionado o 6 º nó do caule de cada planta. Testes histoquímicos clássicos evidenciaram a presença de antocianinas em cortes transversais dos caules, pecíolos e lâminas foliares. Os pecíolos e lâminas foliares foram submetidos à extração com metanol acidificado e as antocianinas foram quantificadas através de leituras espectrofotométricas. Observou-se em nível macroscópico nas duas espécies, maior presença de antocianinas nos caules e pecíolos das plantas sob luz plena. A microscopia de caules de K. brasiliensis evidenciou a deposição de antocianinas no tecido subjacente à epiderme e córtex, o que aumentou com a intensidade luminosa. Em K. pinnata, observou-se colênquima subepidérmico, o que interferiu na visualização de antocianinas. Nos pecíolos e lâminas foliares de K. brasiliensis, a deposição de antocianinas foi periférica e em K. pinnata, se deu também por todo o córtex. A quantificação de antocianinas dos pecíolos mostrou, em 70% de luminosidade, teores superiores aos obtidos em 25%, porém nas lâminas foliares não foram obtidos resultados significativos. Este trabalho contribui para a farmacognosia de Kalanchoe e sustenta-se pela descrição de flavonóides como marcadores biológicos do gênero.
This paper compares two medicinal species of Kalanchoe, which are often used interchangeably by the population, regarding the distribution of anthocyanins under the influence of four luminosity levels for 6 months. For the morphoanatomical analysis, the 6th stem node of each plant was sectioned. Usual histochemical tests revealed the presence of anthocyanins by cross sections of the stems, petioles and leaf blades. The petioles and leaf blades were submitted to the extraction with acidified methanol, and the anthocyanins were quantified by spectrophotometric readings. At the macroscopic level, it was noticed for both species a higher presence of anthocyanins in stems and petioles of plants under full sunlight. The microscopy of K. brasiliensis stems evidenced the deposition of anthocyanins in the subjacent tissue to the epidermis and cortex, which increased with light intensity. In K. pinnata a subepidermal collenchyma was observed, which interfered in the visualization of anthocyanins. In petioles and leaf blades of K. brasiliensis the deposition of anthocyanins was peripheral, and in K. pinnata it was also throughout the cortex. The quantification of anthocyanins in petioles showed in 70% of light higher averages than in 25%, but in leaf blades there were no significant results. This study contributes to the pharmacognosy of Kalanchoe and it is sustained by the description of flavonoids as biological markers of the genus.
5546 downloads
12.
Chemical and agronomic development of Kalanchoe brasiliensis Camb. and Kalanchoe pinnata (Lamk.) Pers under light and temperature levels
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Anais da Academia Brasileira de Ciências
- Métricas do periódico
Este estudo compara o desenvolvimento de Kalanchoe brasiliensis e Kalanchoe pinnata, espécies medicinais conhecidas como "saião" e "folha da fortuna" que são utilizadas indiferenciadamente pela população para fins medicinais. O experimento consistiu em 20 parcelas/espécie plantadas em sacos plásticos com substrato homogêneo, em delineamento ao acaso, cultivadas sob níveis de luminosidade (25%, 50%, 70%, luz plena) em temperatura ambiente, e um tratamento sob plástico com maior amplitude térmica que o meio externo. Obteve-se para K. pinnata maiores alturas de plantas, comprimentos totais de brotos, caules, produção e teor de matéria seca de folhas que para K. brasiliensis, que alcançou maiores médias apenas para comprimentos de ramos laterais. As espécies apresentaram aumento em altura que variou em proporção inversa à incidência luminosa, e observou-se a influência da temperatura em K. pinnata. A produção e teor de matéria seca de folhas foram proporcionais à luminosidade; o que também ocorreu na espessura foliar para K. brasiliensis. No índice de intumescência e grau Brix, K. brasiliensis apresentou maiores médias que K. pinnata. Em relação ao teor de flavonoides totais, não foram observadas diferenças significativas para ambas as espécies. Os parâmetros analisados apontaram as principais diferenças no desenvolvimento agronômico das duas espécies.
This study compares the development of Kalanchoe brasiliensis and Kalanchoe pinnata, which are medicinal species known as "saião" and "folha da fortuna" that are used interchangeably by the population for medicinal purposes. The experiment consisted of 20 plots/species planted in plastic bags with homogeneous substrate in a randomized design, which grown under light levels (25%, 50%, 70%, full sunlight) at environment temperature, and a treatment under a plastic with greater temperature range than the external environment. It was obtained for K. pinnata a greater plant height, total length of sprouts, stems, production and dry matter content of leaves than that obtained for K. brasiliensis, which achieved higher averages only for the length of lateral branches. The species showed increases in height, which varied in inverse proportion to the light, and it was observed the influence of temperature in K. pinnata. The production and dry matter content of leaves were proportional to the luminosity; the same occurred in the thickness of leaves for K. brasiliensis. In the swelling index and Brix degree, K. brasiliensis showed higher averages than K. pinnata. In relation to the total content of flavonoids it was not observed significant differences for both species. The analyzed parameters showed the main differences in the agronomic development of the two species.
4786 downloads
13.
Alkaloid and other chemical constituents from Psychotria stachyoides Benth.
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Pimenta, Antonia T. A.
; Uchôa, Daniel E. A.
; Braz-Filho, Raimundo
; Silveira, Edilberto R.
; Lima, Mary Anne S.
.
Journal of the Brazilian Chemical Society
- Métricas do periódico
Os extratos orgânicos das folhas e raízes de Psychotria stachyoides forneceram o novo alcaloide indólico monoterpênico glicosilado N-desmetil-correantosida, além de bizantionosida B, α-amirina, éter metílico da alizarina, rubiadina, escopoletina, ácido barbinévico e uma mistura deβ-sitosterol e estigmasterol glicosilados. A caracterização estrutural dos compostos isolados foi estabelecida com base na espectroscopia no infravermelho (IR), espectrometria de massa (MS) e particularmente ressonância magnética nuclear (RMN) 1D e 2D.
The organic extracts of leaves and roots of Psychotria stachyoides provided the new glucoside monoterpenoid indole alkaloid N-demethylcorreantoside, besides bizantionoside B, α-amyrin, alizarine methyl-ether, rubiadine, scopoletin, barbinevic acid and a mixture of β-sitosterol and stigmasterol glucosides. The structural characterization of the isolates was established based on infrared spectroscopy (IR), mass spectrometry (MS) and, particularly, 1D and 2D nuclear magnetic resonance (NMR).
2666 downloads
14.
Caracterização morfoanatômica das folhas de Eremanthus erythropappus (DC.) MacLeisch, Asteraceae
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Revista Brasileira de Farmacognosia
- Métricas do periódico
Eremanthus erythropappus (DC.) MacLeisch (Asteraceae), popularmente conhecida como "candeia-da-serra", é uma espécie utilizada na medicina tradicional como cicatrizante e antimicrobiano. O objetivo do presente trabalho foi comparar o número de tricomas glandulares nas folhas jovens e adultas de E. erythropappus, assim como realizar a caracterização morfoanatômica destas folhas. Secções transversais e paradérmicas das folhas foram submetidas às microtécnicas fotônicas e à microscopia eletrônica de varredura. A quantificação dos tricomas glandulares foi realizada em folhas jovens e adultas com auxílio de câmara clara. As folhas são alternas ou fasciculadas e a lâmina foliar possui epiderme uniestratificada, revestida por cutícula delgada e lisa e mesofilo dorsiventral. Em ambas as faces da epiderme, ocorrem estômatos predominantemente anomocíticos e tricomas glandulares inseridos em depressões. Na face abaxial observam-se numerosos tricomas tectores. O parênquima paliçádico é uniestratificado e o parênquima voltado para a face abaxial é formado por três a cinco camadas de células com disposição compacta. As folhas jovens e adultas apresentam respectivamente 21,78±5,83 e 17,80±6,69 tricomas glandulares na face adaxial. A análise morfoanatômica das folhas de E. erythropappus mostra-se um método rápido e prático para a identificação e controle de qualidade de espécies vegetais utilizadas na terapêutica.
Eremanthus erythropappus (DC.) MacLeisch (Asteraceae), commonly known as 'candeia-da-serra', is a plant used in folk medicine as wound healing and antimicrobial. The aim of this study was to compare the number of glandular trichomes between the young and the mature leaves, as well as to perform the morpho-anatomical characterization of E. erythropappus leaves. Transverse and paradermal sections of the leaves were prepared according to light and scanning microtechniques for the morpho-anatomical characterization. The quantification of glandular trichomes on the adaxial surface of the epidermis was evaluated in young and mature leaves with camera lucida. The leaves are alternate or fasciculate and the blade has uniseriate epidermis coated with thin and smooth cuticle and dorsiventral mesophyll. There are predominantly anomocytic stomata on both surfaces, as well as glandular trichomes located in epidermal depressions. Various non-glandular trichomes are encountered on the abaxial surface. The palisade parenchyma consists of a single layer of cells and the parenchyma which is faced to the abaxial surface comprehends three to five layers of cells in compact arrangement. The young and mature leaves showed, respectively, 21.78±5.83 e 17.80±6.69 glandular trichomes on the adaxial side. The morpho-anatomical analysis of E. erythropappus leaves has proved to be a practical and rapid method for the identification and quality control of the vegetal species used for medical purposes.
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Damasceno, Alfredo
; França Jr, Marcondes C.
; Pimenta, Daniel S.
; Deus-Silva, Leonardo de
; Nucci, Anamarli
; Damasceno, Benito P.
.
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