André Gonzaga dos Santos

ORCID: 0000-0002-4920-2506
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About
Contact & Profiles
Research Areas
  • Plant-Derived Bioactive Compounds
  • Phytochemistry Medicinal Plant Applications
  • Essential Oils and Antimicrobial Activity
  • Bee Products Chemical Analysis
  • Composting and Vermicomposting Techniques
  • Phytochemicals and Antioxidant Activities
  • Sesquiterpenes and Asteraceae Studies
  • Research on Leishmaniasis Studies
  • Phytochemistry and Bioactivity Studies
  • Botanical Research and Applications
  • Antifungal resistance and susceptibility
  • Moringa oleifera research and applications
  • Plant Pathogens and Fungal Diseases
  • Pharmacology and Obesity Treatment
  • Phytochemical compounds biological activities
  • Natural Antidiabetic Agents Studies
  • Insect Pest Control Strategies
  • Psychology and Mental Health
  • Pharmacological Effects of Natural Compounds
  • Waste Management and Recycling
  • Phytochemistry and biological activity of medicinal plants
  • Plant and animal studies
  • Plant biochemistry and biosynthesis
  • Nutritional Studies and Diet
  • Hydrology and Watershed Management Studies

Instituto Federal do Amazonas
2025

Universidade Estadual Paulista (Unesp)
2015-2024

Instituto de Ciências Farmacêuticas
2023

Centro Universitário de Araraquara
2012-2022

Serviço Geológico do Brasil - CPRM
2017-2020

National Institute of Amazonian Research
2020

Universidade do Estado do Amazonas
2020

Universitat de Miguel Hernández d'Elx
2019

Technological Institute of Castilla y León
2019

Universitat Politècnica de Catalunya
2019

Background: The incidence of fungal infections, especially those caused by Candida yeasts, has increased over the last two decades. However, indicated therapy for control limitations. Hence, medicinal plants have emerged as an alternative in search new antifungal agents they present compounds, such essential oils, with important biological effects. Published data demonstrate pharmacological properties oil Cymbopogon nardus (L.) Rendle; these include anti-tumor, anti-nociceptive, and...

10.3390/ijms17081252 article EN International Journal of Molecular Sciences 2016-08-09

Abstract An EtOH extract of the leaves Casearia sylvestris afforded new clerodane diterpene, casearin X, together with known compounds casearins B, D, L, and O, caseargrewiin F. Casearin X degraded to corresponding dialdehyde when stored in CDCl 3 . The diterpenes isolated were cytotoxic human cancer cell lines, F being most active clerodane, second compound IC 50 values comparable positive control doxorubicin. All showed lower activities against normal cells than which might indicate a...

10.1002/cbdv.200800342 article EN Chemistry & Biodiversity 2010-01-01

The number of bacterial strains that are resistant to multiple conventional antimicrobial agents is increasing. In this context, natural products have been widely used as a strategy treat diseases caused by bacteria. Infections Helicobacter pylori attracted attention because they directly related severe gastric medical conditions. Casearia sylvestris Swartz, popularly known guaçatonga, largely employed disorders in Brazilian folk medicine. This plant species has aroused much interest mainly...

10.1016/j.jep.2018.12.032 article EN publisher-specific-oa Journal of Ethnopharmacology 2018-12-27

Clerodane diterpenes have demonstrated cytotoxic, antiplasmodial and anti-ulcer properties. In the present work, we determined cytotoxic effect of casearin L (Cas L), O O) X X) (−)-hardwickiic acid isolated from Casearia sylvestris leaves, investigated underlying mechanisms involved in vitro cell death induced by Cas HL-60 leukemia cells (0.7, 1.5 3.0 μM). Cytotoxicity tests that was most active compound studied, showing greater effects against CEM lines (IC50 0.4 μM) human peripheral blood...

10.1016/j.cbi.2010.08.008 article EN publisher-specific-oa Chemico-Biological Interactions 2010-09-04

Leishmaniasis is a disease that affects millions of people and it an important public health problem. The drugs currently used for the treatment leishmaniasis present undesirable side effects low efficacy. In this study, we evaluated in vitro activity Melampodium divaricatum (MD-EO) Casearia sylvestris (CS-EO) essential oils (EO) against promastigote amastigote forms Leishmania amazonensis. Sesquiterpenes E-caryophyllene (56.0%), germacrene D (12.7%) bicyclogermacrene (9.2%) were identified...

10.1590/s1678-9946201961033 article EN cc-by-nc Revista do Instituto de Medicina Tropical de São Paulo 2019-01-01

The application of computer-aided drug discovery (CADD) approaches has enabled the new antimicrobial therapeutic agents in past. high prevalence methicillin-resistantStaphylococcus aureus(MRSA) strains promoted this pathogen to a high-priority for development. In sense, modern CADD techniques can be valuable tools search agents. We employed combination series machine learning (ML) select and evaluate potential compounds with antibacterial activity against methicillin-susceptible S. aureus...

10.1021/acs.jcim.4c00087 article EN Journal of Chemical Information and Modeling 2024-03-04

Considering the reported activity of carvone in literature, this study aimed to evaluate antimicrobial, cytotoxic and chemopreventive activities (+)- (-)-carvone, (-)- hydroxydihydrocarvone α,β-epoxycarvone. (+)-Hydroxydihydrocarvone (HC+), (-)-hydroxydihydrocarvone (HC-) α,β-epoxycarvone (EP) were obtained by synthesis using (+)-carvone (C+) or (-)-carvone (C-) as precursors. The antifungal (MIC MFC) evaluated against Candida parapsilosis, C. tropicalis, krusei albicans antibacterial MBC)...

10.1590/s2175-97902017000400076 article EN cc-by Brazilian Journal of Pharmaceutical Sciences 2018-01-08

Abstract The biodiversity and productivity of the Amazon floodplain depend on nutrients organic matter transported with suspended sediments. Nevertheless, there are still fundamental unknowns about how hydrological rainfall variability influence sediment flux in River. To address this gap, we analyzed 3069 samples collected every 10 days during 1995–2014 at five gauging stations located main rivers. We have two distinct fractions sediments, fine (clay silt) coarse (sand), which followed...

10.1088/2515-7620/ab9003 article EN cc-by Environmental Research Communications 2020-05-01

The Amazon region has the largest hydrographic basin in world. rivers act as roads, and boats serve vehicles for transporting passengers cargo to large urban centers, municipalities, riverside communities, villages, settlements. River transportation system faces critical gaps due lack of land infrastructure certain areas, which makes essential commerce access isolated communities. This work proposes development a new hardware platform consisting system-in-package (SiP)—iMCP HTLRBL32L GPS,...

10.3390/s25020496 article EN cc-by Sensors 2025-01-16

Introdução: O transporte aeromédico, originado na Guerra Franco-Prussiana de 1870, tem sido essencial no atendimento a vítimas trauma, oferecendo rapidez e eficiência em situações críticas. Objetivo: Mapear as evidências científicas refrentes aos aspectos gerais relacionados atendimentos prestados às trauma por meio aéreo. Metodologia: Trata-se uma revisão escopo, seguindo recomendações do Instituto Joanna Briggs Preferred Reporting Items for Systematic reviews and Meta-Analyses Extension...

10.34119/bjhrv8n1-369 article PT Brazilian Journal of Health Review 2025-02-12

In this study, was evaluated the chemical composition of a fraction from Syngonanthus nitens extract and its antimicrobial potential unloaded (Fr3) loaded (F9Fr3) into nanoemulsion (F9) composed cholesterol as oil phase (10%), polyoxyethylene 20-cetyl ether soy phosphatidylcholine (2:1) surfactant (20%), solution phosphate buffer (pH 7.4) plus chitosan polymer dispersion (0.25%) aqueous (70%) to use for VVC treatment. Phytochemical procedures showed that Fr3 is rich in luteolin, which...

10.1166/jbn.2019.2750 article EN Journal of Biomedical Nanotechnology 2019-03-20
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