Chemical, antioxidant and cytotoxic profile of hydroalcoholic extracts of plants from Southern Brazil and their activity against pathogenic fungi isolated from dogs and cats with sensitivity and resistance to conventional antifungals.

Autor: Giordani C; Faculdade de Medicina Veterinária, Universidade de Caxias do Sul, Caxias do Sul, RS, Brasil., Waller SB; Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brasil., Madrid IM; Centro de Controle de Zoonoses, Prefeitura Municipal de Pelotas, Pelotas, RS, Brasil., Guterres KA; Faculdade de Medicina Veterinária, Universidade de Caxias do Sul, Caxias do Sul, RS, Brasil., de Matos CB; Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brasil., Hoffmann JF; Instituto Tecnológico em Alimentos para Saúde, itt Nutrifor, Universidade do Vale do Rio dos Sinos, São Leopoldo, RS, Brasil., de Castro LL; Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brasil., Chaves FC; Departamento de Ciência e Tecnologia Agroindustrial, Faculdade de Agronomia, Universidade Federal de Pelotas, Pelotas, RS, Brasil., de Faria RO; Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brasil., Cleff MB; Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brasil.
Jazyk: angličtina
Zdroj: Natural product research [Nat Prod Res] 2022 Jun; Vol. 36 (12), pp. 3223-3228. Date of Electronic Publication: 2021 Sep 09.
DOI: 10.1080/14786419.2021.1956920
Abstrakt: We aimed to evaluate the chemical, antioxidant, cytotoxic, and antifungal activities of hydroalcoholic extracts of native plants from Southern Brazil: Schinus terebinthifolia (SCH) , Persicaria hydropiperoides (PER) , Eugenia uniflora (EUG) and Equisetum hyemale (EQU). Ethyl gallate, quercetin, and quinic acid were prevalent compounds identified by LC-MS. For total phenolic/flavonoid contents and the antioxidant potential against ABTS/DPPH radicals, the ascending order was EQU < PER < EUG < SCH. All extracts were low cytotoxic and kept a high Vero cell viability (>75%) at concentrations up to 12.5 mg/mL (MTT assay). By M38-A2/M27-A3 (CLSI) against 68 clinical isolates of animals and strains of Malassezia pachydermatis , Sporothrix brasiliensis , Microsporum canis, Microsporum gypseum and Trichophyton mentagrophytes , all extracts (MIC/MFC ≤3.13-100 mg/mL) were active, except EUG. SCH inhibited and killed S. brasiliensis (MIC/MFC 50/90 3.12-12.5 mg/mL) and dermatophytes (MIC/MFC 6.25-25 mg/mL) resistant to ketoconazole and itraconazole. These findings support the promising use of the selected plant extracts as antifungal agents.
Databáze: MEDLINE