A5102772380- Plant Diversity and Evolution
- Plant and animal studies
- Microbial Natural Products and Biosynthesis
- Phytochemistry Medicinal Plant Applications
- Banana Cultivation and Research
- Plant Pathogens and Fungal Diseases
- Fern and Epiphyte Biology
- Biological Stains and Phytochemicals
- Phytochemistry and biological activity of medicinal plants
- Health, Nursing, Elderly Care
- Plant tissue culture and regeneration
- Fungal Infections and Studies
- Public Health in Brazil
- Cassava research and cyanide
- Cancer therapeutics and mechanisms
- Bioactive Compounds and Antitumor Agents
- Maternal and Neonatal Healthcare
- Calcium signaling and nucleotide metabolism
- Infection Control in Healthcare
- Biochemical and Molecular Research
- Plant and Fungal Species Descriptions
- Phytochemical compounds biological activities
- Trypanosoma species research and implications
- Reconstructive Surgery and Microvascular Techniques
- Natural Antidiabetic Agents Studies
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
2018-2025
Universidade Federal dos Vales do Jequitinhonha e Mucuri
2015-2021
Fundação Oswaldo Cruz
2005-2013
Universidade Federal de Minas Gerais
2008-2009
Protozoan parasites belonging to genera Leishmania and Trypanosoma are the etiological agents of severe neglected tropical diseases (NTDs) that cause enormous social economic impact in many countries sub-tropical areas world. In our screening program for new drug leads from natural sources, we found crude extract endophytic fungus Cochliobolus sp. (UFMGCB-555) could kill 90% amastigote-like forms amazonensis inhibit by 100% Ellman's reagent reduction trypanothione reductase (TryR) assay,...
Aiming to identify new sources of bioactive secondary metabolites, we isolated 82 endophytic fungi from stems and barks the native Brazilian tree Caesalpinia echinata Lam. (Fabaceae). We tested their ethyl acetate extracts in several vitro assays. The organic three isolates showed antibacterial activity against Staphylococcus aureus Escherichia coli [minimal inhibitory concentration (MIC) 32-64 μg/mL]. One isolate inhibited growth Salmonella typhimurium (MIC 64 μg/mL) two Klebsiella oxytoca...
We describe two new species of Marantaceae the Brazilian Atlantic Forest. These were discovered in northern Espírito Santo state, inside Reserva Natural Vale. Ctenanthe brevibractea is here compared to C. lanceolata, and can be distinguished by its overall shorter stature, glabrous leaf sheath, inflorescence rachis with internodes, component bracts obovate-acuminate, deciduous, holding 1–2 cymules, per cymule one bracteole, flowers solitary, spathulate outer staminodes. Saranthe rufopilosa...
Lapachol was chemically modified to obtain its thiosemicarbazone and semicarbazone derivatives. These compounds were tested for antimicrobial activity against several bacteria fungi by the broth microdilution method. The derivatives of lapachol exhibited Enterococcus faecalis Staphylococcus aureus with minimal inhibitory concentrations (MICs) 0.05 0.10 µmol/mL, respectively. also active pathogenic yeast Cryptococcus gattii (MICs 0.20 respectively). In addition, derivative 11 clinical...
BACKGROUND In a screen of extracts from plants and fungi to detect antileishmanial activity, we found that the ethyl acetate extract fungus Nectria pseudotrichia, isolated tree Caesalpinia echinata (Brazilwood), is promising source bioactive compounds. OBJECTIVES The aims this study were isolate determine chemical structures compounds responsible for activity organic N. pseudotrichia. METHODS Compounds by chromatographic fractionation using semi-preparative high-performance liquid...
Paracoccidioidomycosis (PCM), a human mycosis caused by the dimorphic fungus Paracoccidioides brasiliensis, is serious public health problem in several countries of Latin America. In our search we found that crude extract endophytic UFMGCB 551 was able to inhibit clinical strains P. and also active bioautographic assay against Cladosporium sphaerospermum. The isolated from plant Piptadenia adiantoides J.F. Macbr (Fabaceae). identified as Fusarium sp. based on its macro- micro-morphology,...
Mauritia flexuosa L.f. (Arecaceae), commonly known as the buriti palm, is used in traditional medicine Brazil. Oil from fruits for wound healing of skin burns and an anti rheumatic agent. The stem pith to treat dysentery diarrhea. aim this study was evaluate vitro antibacterial cytotoxic activities M. extracts fractions. Crude ethanol (EtOH) fruits, leaves, stems were submitted liquid-liquid partition yield four different soluble fractions: hexane (Hex), dichloromethane (DCM), ethyl acetate...
Abstract Senna rugosa (Fabaceae) is a common specie of the Brazilian territory, especially in Cerrado biome. It widely used popular medicine although not yet adequately investigated as to its phytoconstituents and pharmacological activities. In this study, preliminary phytochemical analysis ethanolic leaf extract S. was performed cytotoxicity, antitumoral antimicrobial activities (antibacterial, antifungal, anti-Trypanosoma anti-Leishmania) were evaluated. The crude analyzed HPLC-DAD...
A new species of Maranta from the Brazilian Atlantic Forest is described. The most similar to ruiziana , which it differs mainly in its bambusoid habit, non starch‐storing rhizome, homotropic leaves, with blade entirely glabrous on both surfaces and leaf margins entire, florescence components numerous cymules, sepals longer than corolla tube, spheroidal fruit. also presents morphological characters seen tuberculata easily distinguished by fruits. I characterize external morphology, provide a...
The "Serra da Concórdia" is part of the Atlantic Forest phytogeographical domain in Brazilian state Rio de Janeiro and it has a predominant phytophysiognomy Semideciduous Seasonal Forest. This region underwent intense habitat loss fragmentation during 19 th century, due to coffee plantations later pastures. With decline these activities, areas were abandoned, triggering secondary succession. In 2002, "Parque Estadual Serra was established this preserve remaining forest fragments. updated...
A new species of Maranta (Marantaceae) from the Brazilian Amazon is described and illustrated. This belongs to subg. has close affinities with M. linearis, which it differs in its caulescent habit, absent petiole, pulvinus deciduous tufts erect trichomes on adaxial side, very long inflorescence many florescences, longitudinally ridged ovary capsule.
Protozoan parasites belonging to genera Leishmania and Trypanosoma are the etiological agents of severe neglected tropical diseases (NTDs) that cause enormous social economic impact in many countries sub-tropical areas world.In our screening program for new drug leads from natural sources, we found crude extract endophytic fungus Cochliobolus sp.(UFMGCB-555) could kill 90% amastigote-like forms amazonensis inhibit by 100% Ellman's reagent reduction trypanothione reductase (TryR) assay, when...
Resumo Este estudo apresenta um tratamento florístico das espécies de Dioscoreaceae registradas nas cangas da Serra dos Carajás, Pará. Apresentam-se descrições detalhadas, chave para identificação, fotografias, distribuição geográfica, comentários morfológicos e ecológicos tratadas. Foram seis área estudos, todas pertencentes ao gênero Dioscorea, incluindo D. planistipulosa, novo registro o estado a região amazônica.
A new species of Maranta (Marantaceae) from Central Brazil is described and illustrated. The recognizable due to its small rosulate habit, unbranched aerial shoot, hirtellous bracts with apex acute, sub-brachyblastic cymules, each bracteole subtending a single flower.
Ethnopharmacological relevance: Miconia ferruginata DC. is a native plant from Brazilian Cerrado biome known as "pixirica" or "babatenã", widely used in traditional medicine an anti-inflammatory and antibiotic agent. Aim of the study: This study aimed to perform preliminary analysis chemical profile screening biological activities ethanolic extracts leaves/flowers (EELF) stem (EES) this species. Materials methods: The techniques Ultra-Fast Liquid Chromatography with diode-array detection...
Based on reproductive characters, two taxa are segregated from D. triangularis (Griseb.) R. Knuth: piperifolia var. and galiiflora, the latter previously known only by its type collection. Dioscorea galiiflora is here described, new occurrences reported conservation status assessed. We also provide nomenclatural notes circumscribe triangularis, moyobambensis.
We describe here Dioscorea medusae, a new species that occurs in rupicolous plant communities on rocky outcrops (inselbergs) northwestern Espírito Santo State, Southeastern Brazil. This is markedly different from all of the Neotropic and it differs by its numerous short racemes, flowers with three stamens conspicuous anthers. provide morphological description species, notes habitat, distribution phenology.
In the present study we designate lectotypes for 19 names, as well a neotype Maranta phrynioides. Furthermore, an illustration is recognized holotype of M. bicolor, based on historical data, and unknown type noctiflora here located its history clarified. Finally, important taxonomic notes are provided, including new synonyms Calathea stenostachys, longipes, longiscapa, pleiostachys pycnostachys, all under phrynioides, subterranea synonym furcata.
We describe a new species of Maranta from the Brazilian Atlantic Forest. The is similar to divaricata , which it differs mainly in its shorter peduncles synflorescences, florescences and cymules, being covered by hirsute bracts, dense hairiness covering aerial shoot entire extension. characterize external morphology, anatomy leaves presented an SEM scanning hairiness. pilosissima also assessed preliminary conservation status distribution mapped.
Objetivo: determinar a incidência e os fatores associados da infecção de sítio cirúrgico em osteossíntese fêmur uma unidade hospitalar filantrópica no interior Minas Gerais - Brasil. Método: estudo transversal, descritivo retrospectivo conduzido período 2 fevereiro 2017 31 março 2019. Os dados foram extraídos dos prontuários das fichas notificação infecções relacionadas à assistência saúde. Resultados: foi 5,5%. 46,7% pacientes reinternados, 26,7% fizeram desbridamento o tempo médio...