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A closer look at cannabimimetic terpenes, polyphenols, and flavonoids: a promising road forward

Neural Regeneration Research 2021年第7期16卷 1433-1435页

作者： Juliana Cavalli rafael cypriano dutra Laboratory of Autoimmunity and Immunopharmacology Department of Health SciencesCenter of AraranguáFederal University of Santa CatarinaAraranguáSCBrazil Post-Graduate Program of Neuroscience Center of Biological SciencesFederal University of Santa CatarinaFlorianópolisSCBrazil

Despite the current interest in the potential medical use of Cannabis, it is worth remembering that cannabis is not a new drug, with both a nonmedical and medical history supporting its *** history advanced in scientific strength and importance worldwide when Professor Raphael Mechoulam and colleagues initiated their pioneering discoveries in *** first, Mechoulam et al.(1972) achieved the complete synthesis of the pure compounds from hashish(including △1-tetrahydrocannabinol and other neutral cannabinoids such as cannabigerol, cannabichromene, and cannabicyclol), and established their molecular structures.

关键词： closer initiated neutral

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Pramipexole, a dopamine D3/D2 receptor-preferring agonist, attenuates reserpine-induced fibromyalgia-like model in mice

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Neural Regeneration Research 2022年第2期17卷 450-458页

作者： Carlos Pereira Martins Rodrigo Sebben Paes Gabriela Mantovani Baldasso Eduarda Gomes Ferrarini Rahisa Scussel Rubya Pereira Zaccaron Ricardo Andrez Machado-de-Avila Paulo Cesar Lock Silveira rafael cypriano dutra Laboratory of Autoimmunity and Immunopharmacology Department of Health SciencesCampus AraranguaUniversidade Federal de Santa CatarinaAraranguáSCBrazil Post-Graduate Program of Neuroscience Center of Biological SciencesUniversidade Federal de Santa CatarinaFlorianópolisSCBrazil Laboratory of Experimental Physiopathology Program of Postgraduate in Science of HealthUniversidade do Extremo Sul CatarinenseCriciumaSCBrazil

Fibromyalgia(FM) is a complex pathology described as persistent hyperalgesia including somatic and mood dysfunctions, depression and anxiety. Although the etiology of FM is still unknown, a significant decrease in biogenic amines is a common characteristic in its pathogenesis. Here, our main objective was to investigate the role of dopamine D3/D2 receptor during the reserpine-induced pain in mice. Our results showed that pramipexole(PPX) – a dopaminergic D3/D2 receptor agonist – inhibited mechanical allodynia and thermal sensitivity induced by reserpine. Relevantly, PPX treatment decreased immobility time and increased the number of grooming in the forced swimming test and splash test, respectively. Animals that received PPX remained longer in the open arms than the reserpine group using elevated plusmaze apparatus. The repeated PPX administration, given daily for 4 days, significantly blocked the mechanical and thermal allodynia during FM model, similarly to pregabalin, although it failed to affect the reserpine-induced thermal nociception. Reserpine administration induced significant downregulation of dopamine concentration in the central nervous system, and repeated treatment with PPX restored dopamine levels in the frontal cortex and spinal cord tissues. Moreover, PPX treatment inhibited oxidants production such as DCFH(2′,7′-dichlorodihydrofluorescein) and nitrite, also decreased oxidative damage(carbonyl), and upregulated the activity of superoxide dismutase in the spinal cord. Together, our findings demonstrated the ability of dopamine D3/D2 receptor-preferring agonist in reducing pain and mood dysfunction allied to FM in mice. All experimental protocols were approved by the Universidade Federal de Santa Catarina(UFSC) Ethics Committee(approval No. 2572210218) on May 10, 2018.

关键词： dopamine dopaminergic system fibromyalgia hyperalgesia pain pramipexole reserpine

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Morphological and molecular diversity of arbuscular mycorrhizal fungi in revegetated iron-mining site has the same magnitude of adjacent pristine ecosystems

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Journal of Environmental Sciences 2018年第5期30卷 330-343页

作者： Caroline Krug Vieira Matheus Nicoletti Marascalchi Arthur Vinicius Rodrigues rafael dutra de Armas Sidney Luiz Stürmer Universidade Regional de Blumenau(FURB) Programa de Pos-Graduacao em Engenharia Ambiental89030-903 BlumenauSCBrazil Universidade Regional de Blumenau(FURB) Departamento de Ciencias Naturais(DCN)89030-903 BlumenauSCBrazil Uniuersidade Regional de Blumenau(FURB) Programaa de Pos-Graduacao em Engenharia Florestal89030-903 BlumenauSCBrazil Centro Universitario-Catolica de Santa Catarina 89203-005 JoinvilleSCBrazil

Arbuscular mycorrhizal fungi（AMF） are important during revegetation of mining sites, but few studies compared AMF community in revegetated sites with pristine adjacent ecosystems. The aim of this study was to assess AMF species richness in a revegetated iron-mining site and adjacent ecosystems and to relate AMF occurrence to soil chemical parameters. Soil samples were collected in dry and rainy seasons in a revegetated iron-mining site（RA） and compared with pristine ecosystems of forest（FL）, canga（NG）,and Cerrado（CE）. AMF species were identified by spore morphology from field and trap cultures and by LSU r DNA sequencing using Illumina. A total of 62 AMF species were recovered, pertaining to 18 genera and nine families of Glomeromycota. The largest number of species and families were detected in RA, and Acaulospora mellea and Glomus sp1 were the most frequent species. Species belonging to Glomeraceae and Acaulosporaceae accounted for 42%–48% of total species richness. Total number of spores and mycorrhizal inoculum potential tended to be higher in the dry than in the rainy season, except in RA. Sequences of uncultured Glomerales were dominant in all sites and seasons and five species were detected exclusively by DNA-based identification. Redundancy analysis evidenced soil p H,organic matter, aluminum, and iron as main factors influencing AMF presence. In conclusion, revegetation of the iron-mining site seems to be effective in maintaining a diverse AMF community and different approaches are complementary to reveal AMF species, despite the larger number of species being identified by traditional identification of field spores.

关键词： Community structure Glomeromycota Illumina LSU rDNA Spore morphology Taxonomic distinctness index

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Syzygium aromaticum L.(Clove)Essential Oil as a Reducing Agent for the Green Synthesis of Silver Nanoparticles

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Open Journal of Applied Sciences 2019年第2期9卷 45-54页

作者： Matheus Vinicius de Oliveira Brisola Maciel Aline da Rosa Almeida Michelle Heck Machado Ana Paula Zapelini de Melo Cleonice Goncalves da Rosa Daniele Ziglia de Freitas Carolina Montanheiro Noronha Gerson Lopes Teixeira rafael dutra de Armas Pedro Luiz Manique Barreto Departamento de Ciencia e Tecnologia de Alimentos Universidade Federal de Santa CatarinaFlorianopolisBrasil Centro Universitario-Catolica de Santa Catarina JoinvilleBrasil

The present investigation details a green synthesis of silver nanoparticles (AgNP) using the essential oil of Syzygium aromaticum L. (clove) as reducing agent, which is a matrix with a high content of eugenol, an important compound for the reducing action of silver nitrate. The synthesis of AgNP was performed at different pH conditions (pH 7, 8, 9 and 10), and was monitored by UV-Vis Spectroscopy, Dynamic Light Scattering (DLS) and Transmission Electron Microscopy. The synthesized nanoparticles presented characteristic Surface Plasmon Resonance bands with maximum absorbance between 405 and 460 nm. The DLS analysis revealed particle sizes from 31 to 72 nm and zeta potential between -30.1 and -50.8 mV indicating good stability against the agglomeration of the particles in solution. The micrographs obtained by TEM showed different particle shapes and a predominance of spherical-shaped nanoparticles, and average size ranging from 27 to 94 nm. The clove-based silver nanoparticles were efficient in controlling the growth of Escherichia coli and Staphylococcus aureus bacteria, and the minimum inhibitory concentration ranged from 60 to 100 μL/mL. This study highlights the feasibility of clove essential oil as an alternative for the synthesis of silver nanoparticles by a simple, inexpensive and eco-friendly method.

关键词： Essential Oil Clove Eugenol Silver Nanoparticles Antibacterial Activity

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