Resumo Trinta e seis compostos foram identificados à partir de partes aéreas de Solidago chilensis cultivadas na PAF/FIOCRUZ, na cidade do Rio de Janeiro, usando microextração em fase sólida (MEFS) e analisados por cromatografia gasosa-espectrometria de massa (CG-EM). Estes compostos são principalmente mono terpenos não oxigenados e sesquiterpenos. O Germacreno D é o composto majoritário de duas amostras de óleo essencial analisadas (12 a 23%) e de duas amostras voláteis analisadas por MEFS. Limoneno é o composto majoritário da amostra de inflorescências frescas (cerca de 21%). O acetato de bornila está presente em ambas as frações, voláteis (16%) e óleos essenciais (7-8%). Todas as amostras de óleos essenciais avaliadas apresentaram boa atividade antinociceptiva, considerando a dose utilizada das amostras (1 mg/kg) e a substância padrão (50 mg/kg). Solidago chilensis é uma das arnicas brasileiras e é uma planta medicinal amplamente utilizada pela população brasileira. Outras plantas do gênero Solidago também são utilizadas na medicina tradicional na América do Norte e na Europa. Este é o primeiro relato da análise de MEFS do gênero Soligado e do efeito antinociceptivo do óleo essencial de Solidago chilensis.

Abstract Thirty-six compounds were identified from aerial parts of Solidago chilensis cultivated at PAF/FIOCRUZ campus in Rio de Janeiro city (RJ) using solid-phase microextraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS) analysis. These compounds are mainly non-oxygenated mono and sesquiterpenes. Germacrene D is the major compound of two the essential oil analyzed samples (12 to 23%) and of two of the volatiles samples analyzed by SPME (central stems and dry inflorescences samples). Limonene is the major compound in the fresh inflorescences sample (about 21%). The bornil acetate is present in both volatile fractions (16%) and essential oils (7-8%). All the essential oils samples evaluated shown a great antinociceptive activity, considering the used dose of the samples (1 mg/kg) and the standard substance (50 mg/kg). Solidago chilensis is one of Brazil arnicas and it is a medicinal plant widely used by the brazilian population. Other plants of the genus Solidago are also used in traditional medicine in North America and Europe. This is the first report of SPME analysis from Solidago genus and of the antinociceptive effect from Solidago chilensis essential oil.

Resumo Espécies de Solidago são utilizadas mundialmente pelas atividades terapêuticas dos seus flavonoides e terpenoides, ações anti-inflamatória, antirreumática, analgésica, diurética, aquarética, cicatrizante de feridas e queimaduras e em picadas de insetos, que permitem sua utilização em substituição uma à outra. Para determinação do perfil metabólico (PM) de inflorescências de Solidago canadensis (SCAI) comercializada no Rio de Janeiro, RJ e avaliação do seu potencial medicinal frente à S. chilensis e à SCAI utilizada na América do Norte e Europa, a UFLC-PDA-ESI-TOF é de grande relevância, resolução e rapidez e revelou, através do íons pseudo-moleculares e fragmentos característicos, o PM de SCAI, formado principalmente flavonóis: quercetina, kaempferol, isoramnetina e seus glicosídeos, além do ácido clorogênico (AC), aos quais são atribuídas importantes atividades biológicas de S. chilensis. Onze substâncias, dentre elas 10 flavonóis e o AC, confirmaram a compatibilidade do PM apresentado com as variedades canadensis e scabra da S. canadensis europeia, que apresenta as mesmas agliconas e glicosídeos, marcadores químicos e biológicos para extratos e produtos à base de espécies do gênero Solidago. UFLC-PDA-ESI-TOF permite a caracterização de extratos e contribui para o controle da qualidade de matérias-primas vegetais e fitoterápicos comercializados e para o desenvolvimento de novos produtos e fitomedicamentos.

Abstract Species in the Solidago genus are used worldwide due to the therapeutic activities of their flavonoids and terpenoids. Its anti-inflammatory, antirheumatic, analgesic, diuretic, aquaretic, wound-healing properties as well as its ability to relieve burn and insect bites allow use in a variety of situations. This study was carried out to determine the metabolic profile of Solidago canadensis inflorescences (SCAI) to identify the species commercialized in Rio de Janeiro, RJ, Brazil, and evaluate the medicinal potential compared to S. chilensis and SCAI, which is used in North America and Europe. The UFLC-PDA-ESI-TOF revealed the metabolic profile of SCAI, finding the pseudo-molecular ions and characteristic fragments, mainly flavonols (10) such as quercetin, kaempferol, isorhamnetin, and its glycosides, as well as chlorogenic acid (CA). Eleven substances were identified, confirming the compatibility of the metabolic profile presented in varieties canadensis and scabra of european S. canadensis. The both contain the same flavonoid aglycones, and their glycosides are important chemical and biological markers for extracts and products based on species of the genus Solidago. UFLC-PDA-ESI-TOF characterized the extracts, which can help with quality control of raw plant materials and commercialized phytotherapeutics as well as for development of new products and phytomedicines.

Solidago chilensis Meyen (= Solidago microglossa) popularly known as “Brazilian arnica” is used to treat of inflammatory disorders. S. chilensis is constant in the Therapeutic Memento of the Rio de Janeiro city and belongs to the medicinal species of Brazilian National List of Medicinal Plants of Interest of the Unified National Health System (SUS). There are no studies in the literature showing the direct activity of this plant species on immune system cells. The present study evaluated the chemical composition as well as the cytotoxic and pharmacological activity of the ether-ethanol extract from S. chilensis inflorescences (SCIE) in murine macrophage cell line J774A.1. The results showed that higher concentrations (50 to 200 µg/mL) of SCIE had significant cytotoxicity on J774A.1 cells, however, lower concentrations (from 10 to 0.1 µg/mL) did not produce significant cytotoxic effects and exhibited an inhibitory effect on nitric oxide production in LPS-stimulated J774A.1 cell line. The chemical analysis by HPLC-UV-PDA indicated that the SCIE contains flavonoid derived from quercetin and kaempferol; and diterpenes, probably labdanes. These findings complement data in the literature regarding the activity of this plant species on an important cell from the immune system involved in the innate and acquired immune response, the macrophages.