Evaluation of anxiolytic-like effect of 7-epiclusianone isolated from Garcinia brasiliensis in mice

ABSTRACT Garcinia brasiliensis Mart., Clusiaceae, species became the target of studies for some years because it has several compounds including polyprenylated benzophenones, as 7-epiclusianone. This benzophenone has several properties, such as leishmanicidal, anti-inflammatory and antinociceptive effects, however still did not be studied anxiolytic activity. For this, the open field and elevated plus maze tests were used in order to evaluate the effect of administration of 7-epiclusianone (isolated from G. brasiliensis) on behavioral performance. Swiss male mice (n = 10 per group) were pre-treated with vegetable oil (10 ml/kg; i.p.) or 7-epiclusianone (1, 3 or 10 mg/kg, i.p.) or diazepam (0.2 mg/kg, i.p.). After 1 h, the animals were submitted to the open field and elevated plus maze tests. The administration of 7-epiclusianone exerted a possible anxiolytic effect in the open field, increased the number of central crossings and anti-tigmotactic effect. In pre-treated group with 7-epiclusianone (10 mg/kg) was also possible to determine a possible anxiolytic effect in the elevated plus maze due to increased permanence of animals in the open arms. The results suggest a possible anxiolytic-like effect presented by the 7-epiclusianone and suggest its potential for the treatment of anxiety.

Growth curve, biochemical profile and phytochemical analyses in calli obtained from the procambium segments of Bacupari

Garcinia brasiliensis, popularly known as Bacupari, is native to the Amazon and commonly used in folk medicine for its therapeutic properties. This plant is rich in bioactive compounds like benzophenones. However, there are no works about the in vitro establishment and achievement of secondary metabolites in this plant. Thus, the aim of this work was to determine the growth curve and to perform the biochemical and phytochemical analyses in calli obtained from the procambium segments of Bacupari. The growth curve of calli followed a sigmoidal pattern, with four distinct phases (lag, exponential, linear, deceleration). Total soluble sugars were higher on the inoculation day and the reducing sugars on the 20 th day. Amino acids increased from the 60 th day up to the stabilization on the 120 th day. The protein content varied, but it seemed to be related to the amino acids metabolism. The phytochemical screening showed the presence of phenolic and flavonoid compounds in the calli and the HPLC analysis allowed the identification of Fukugetin, Guttiferone A and 7-epiclusianone.

Efeito de constituintes químicos extraídos do fruto de Rheedia gardneriana (bacuparí) sobre bactérias patogênicas / Effect of chemical constituents from the fruit of Rheedia gardneriana (bacupari) on pathogenic bacteria

Rheedia gardneriana (bacupari) é planta da família Clusiaceae, encontrada na região Amazônica. A espécie estudada foi coletada no Horto Botânico da Universidade Federal de Viçosa. O estudo químico do fruto (pericarpo) conduziu à identificação dos seguintes constituintes: mistura de sesquiterpenos, ácido oleanóico e epiclusianona. Estes foram avaliados quanto ao potencial bactericida ou bacteriostático em testes in vitro. A epi-clusianona e o ácido oleanóico mostraram atividade inibitória no crescimento de Staphylococcus aureus e Listeria monocytogenes. A epi-clusianona inibiu o crescimento das fitobactérias Pseudomonas sp e Clavibacter michiganense subsp. michiganense