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1.
Molecules ; 26(4)2021 Feb 18.
Artigo em Inglês | MEDLINE | ID: mdl-33670502

RESUMO

Promising research over the past decades has shown that some types of pentacyclic triterpenes (PTs) are associated with the prevention of type 2 diabetes (T2D), especially those found in foods. The most abundant edible sources of PTs are those belonging to the ursane and oleanane scaffold. The principal finding is that Cecropia telenitida contains abundant oleanane and ursane PT types with similar oxygenation patterns to those found in food matrices. We studied the compositional profile of a rich PT fraction (DE16-R) and carried out a viability test over different cell lines. The biosynthetic pathway connected to the isolated PTs in C. telenitida offers a specific medicinal benefit related to the modulation of T2D. This current study suggests that this plant can assemble isobaric, positional isomers or epimeric PT. Ursane or oleanane scaffolds with the same oxygenation pattern are always shared by the PTs in C. telenitida, as demonstrated by its biosynthetic pathway. Local communities have long used this plant in traditional medicine, and humans have consumed ursane and oleanane PTs in fruits since ancient times, two key points we believe useful in considering the medicinal benefits of C. telenitida and explaining how a group of molecules sharing a closely related scaffold can express effectiveness.


Assuntos
Vias Biossintéticas , Cecropia/química , Suplementos Nutricionais , Triterpenos Pentacíclicos/metabolismo , Animais , Morte Celular/efeitos dos fármacos , Linhagem Celular , Sobrevivência Celular/efeitos dos fármacos , Fracionamento Químico , Cromatografia Líquida de Alta Pressão , Humanos , Espectroscopia de Ressonância Magnética , Camundongos , Triterpenos Pentacíclicos/química , Triterpenos Pentacíclicos/farmacologia
2.
Molecules ; 25(7)2020 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-32218297

RESUMO

Plant extracts from Cecropia genus have been used by Latin-American traditional medicine to treat metabolic disorders and diabetes. Previous reports have shown that roots of Cecropia telenitida that contains serjanic acid as one of the most prominent and representative pentacyclic triterpenes. The study aimed to isolate serjanic acid and evaluate its effect in a prediabetic murine model by oral administration. A semi-pilot scale extraction was established and serjanic acid purification was followed using direct MALDI-TOF analysis. A diet induced obesity mouse model was used to determine the impact of serjanic acid over selected immunometabolic markers. Mice treated with serjanic acid showed decreased levels of cholesterol and triacylglycerols, increased blood insulin levels, decreased fasting blood glucose and improved glucose tolerance, and insulin sensitivity. At transcriptional level, the reduction of inflammation markers related to adipocyte differentiation is reported.


Assuntos
Biomarcadores/metabolismo , Obesidade/imunologia , Obesidade/metabolismo , Triterpenos/uso terapêutico , Tecido Adiposo/metabolismo , Animais , Peso Corporal/efeitos dos fármacos , Metabolismo dos Carboidratos/efeitos dos fármacos , Dieta Hiperlipídica , Modelos Animais de Doenças , Regulação da Expressão Gênica/efeitos dos fármacos , Secreção de Insulina/efeitos dos fármacos , Fígado/efeitos dos fármacos , Fígado/patologia , Camundongos , Obesidade/sangue , Obesidade/tratamento farmacológico , Tamanho do Órgão/efeitos dos fármacos , Triterpenos/química , Triterpenos/isolamento & purificação , Triterpenos/farmacologia
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