In vitro anticoagulant activity of mikania laevigata: deepening the study of the possible interaction between guaco and anticoagulants

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorLeite, Paula Mendonça-
Autor(es): dc.creatorMiranda, Ana Paula Nader-
Autor(es): dc.creatorAmorim, Juliana Mendes-
Autor(es): dc.creatorDuarte, Rita Carolina Figueiredo-
Autor(es): dc.creatorBertolucci, Suzan Kelly Vilela-
Autor(es): dc.creatorCarvalho, Maria das Graças-
Autor(es): dc.creatorCastilho, Rachel Oliveira-
Data de aceite: dc.date.accessioned2026-02-09T12:40:02Z-
Data de disponibilização: dc.date.available2026-02-09T12:40:02Z-
Data de envio: dc.date.issued2020-06-24-
Data de envio: dc.date.issued2020-06-24-
Data de envio: dc.date.issued2019-11-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/41556-
Fonte completa do material: dc.identifierhttps://journals.lww.com/cardiovascularpharm/Citation/2019/12000/In_Vitro_Anticoagulant_Activity_of_Mikania.14.aspx-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1165883-
Descrição: dc.descriptionMikania laevigata, popularly known in Brazil as guaco, is widely used for respiratory disorders. As this plant is rich in coumarins, there is evidence of indications that it may cause bleeding and therefore should not be used concomitantly with anticoagulants. The basis of this information is very theoretical, with no clinical evidence of such contraindication. Thus, the aim of this study was to evaluate the in vitro effect of M. laevigata extract on blood coagulation through prothrombin time (PT) and activated partial thromboplastin time (aPTT) tests, fibrinogen plasma concentration, and the new thrombin generation test, which investigate, with high sensibility, hemostatic changes (CAAE 60904316.6.0000.5149), besides evaluating its qualitative micromolecular composition, providing scientific evidence to support the management of patients taking warfarin. Ethanolic extracts of guaco leaves were incubated with a plasma pool of healthy individuals at concentrations of 1.67, 2.26, and 2.86 mg/mL. The presence of flavonoids, tannins, coumarins, and triterpenes was demonstrated by selective reagents in thin layer chromatography. Benzoylgrandifloric acid, cinnamoylgrandifloric acid, o-coumaric acid, coumarin, and quercetin-3-β-glucoside were identified by coinjection in ultraperformance liquid chromatography. The extract at all concentrations prolonged TP and aPPT and reduced the potential for endogenous thrombin potential by the thrombin generation test. The control plasma had endogenous thrombin potential = 1465 nM/min, and after the addition of M. laevigata extract (2.26 mg/mL), this value was reduced to 1087 nM/min, indicating a lower generation of thrombin. Related to fibrinogen plasma concentration, concentrations of 2.26 and 2.86 mg/mL were effective in reducing plasma fibrinogen levels. These results allow us to conclude that the guaco extract demonstrated an anticoagulant effect in vitro, possibly interfering with intrinsic, extrinsic, and common coagulation pathways. A discussion on the contribution of the identified substances to the activity is also present.-
Idioma: dc.languageen-
Publicador: dc.publisherWolters Kluwer-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Cardiovascular Pharmacology-
Palavras-chave: dc.subjectHerbs-
Palavras-chave: dc.subjectMikania-
Palavras-chave: dc.subjectThrombin generation-
Palavras-chave: dc.subjectWarfarin-
Palavras-chave: dc.subjectErvas-
Palavras-chave: dc.subjectAsteraceae-
Palavras-chave: dc.subjectAnticoagulantes-
Palavras-chave: dc.subjectVarfarina-
Título: dc.titleIn vitro anticoagulant activity of mikania laevigata: deepening the study of the possible interaction between guaco and anticoagulants-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

Não existem arquivos associados a este item.