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Victor de Jesus Silva Meireles

Department of Biology, Federal University of Piauí (UFPI), Picos, Brazil.

2 papers in the library · 7 citations · publishing 2024

Papers

Unraveling the metabolomic profile and acute toxicity of ethanolic extract from Mimosa tenuiflora (Willd.) Poir. root bark.

Toxicon : official journal of the International Society on Toxinology October 1, 2024 Renato Pinto De Sousa, Carlos Mario Freitas De Oliveira, Rita de Cassia De Lima Sousa et al. 6 citations

An ethanolic extract of Mimosa tenuiflora root bark, used in a psychedelic drink called 'jurema wine' in Indigenous Brazilian rituals, was analyzed for chemical composition and acute oral toxicity. Thirteen compounds were identified, including proanthocyanidins, alkaloids, a flavonol, and a dihydrochalcone. In female Swiss mice, single oral doses of 300 and 2000 mg/kg caused no deaths, no changes in food intake or body weight, and the lethal dose 50 (LD50) exceeded 2000 mg/kg, placing the extract in GHS category 5. However, both doses significantly altered relative kidney weights, hematological and biochemical parameters, and caused histopathological changes in the heart, liver, and kidneys, indicating acute oral toxicity.

The anxiolytic-like effect of the alkaloid fraction of the psychedelic plant Mimosa tenuiflora (Willd.) Poir.

Natural product research September 18, 2024 Jady Vitoria Barjud Pereira Ferreira, Ana Marcia de Freitas Pessoa, Rita de Cassia de Lima Sousa et al. 1 citation

An alkaloid fraction (AF II) from the root bark of Mimosa tenuiflora, containing DMT, reduces anxiety in mice. Female Swiss mice received either saline, AF II (6 mg/kg), or diazepam (5 mg/kg) before being tested in the light-dark box and elevated plus maze. AF II produced significant anxiolytic effects in both tests, comparable to the standard drug diazepam.