JOURNAL ARTICLE
SYSTEMATIC REVIEW
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Phytochemical and pharmacological aspects of Cnidoscolus Pohl species: A systematic review.

Phytomedicine 2018 November 16
BACKGROUND: Cnidoscolus is a genus belonging to the Euphorbiaceae family, distributed in South American countries, such as Mexico and Brazil, which includes several species widely used in folk medicine. However, the genus is not sufficiently exploited from a chemical and pharmacological point of view.

HYPOTHESIS/PURPOSE: This paper aims to present a systematic review of known pharmacological and chemical aspects from Cnidoscolus, an important genus for South America research groups on medicinal plants. In this article, we highlight the importance of Cnidoscolus species in the search for new bioactive molecules.

STUDY DESIGN: A systematic review was conducted in order to collect chemical and pharmacological information on species of this genus in the last 25 years.

METHODS: Literature search was performed through specialized databases (PUBMED, LILACS, SCIELO, Science Direct and Web of Science) using different combinations of the following keywords: Cnidoscolus, phytochemistry, pharmacological activity. For the selection of the manuscripts, two independent investigators (RGOJ and CAAF) first selected the articles according to the title, then to the abstract and finally through an analysis of the full-text publication. All selected manuscripts were analyzed for year of publication, country where the research was performed, reported plant species, isolated chemical compounds and evaluated biological activities.

RESULTS: Most of the studies involving Cnidoscolus were conducted by research groups located in Brazil, Nigeria and Mexico. Regarding the annual evolution of the publications, a larger number of articles published in 2014 were observed. Flavonoids, triterpenes and diterpenes represent the main classes of secondary metabolites that have been isolated from Cnidoscolus. In terms of the pharmacological investigations, C. aconitifolius, C. chayamansa and C. quercifolius are considered the most studied species, with different pharmacological activities.

CONCLUSION: All findings indicate that Cnidoscolus is an important genus of the Euphorbiaceae family. However, considering its chemical and pharmacological importance, the studies developed with Cnidoscolus species are still limited, representing an opportunity to investigate new bioactive molecules.

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