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Research Article

A new dammarane saponin and other triterpenoids from Siolmatra brasiliensis and evaluation of the antidiabetic activity of its extract

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Pages 1539-1547 | Received 03 Feb 2015, Accepted 08 Oct 2015, Published online: 25 Jan 2016

Figures & data

Figure 1. Triterpenoids from S. brasiliensis.

Figure 1. Triterpenoids from S. brasiliensis.

Table 1. NMR spectroscopic data of compound 1 (400 MHz, pyridine-d5).

Figure 2. Circular dichroism of cayaponosides A1 (2), B4 (3) and D (4).

Figure 2. Circular dichroism of cayaponosides A1 (2), B4 (3) and D (4).

Figure 3. Glycemia (A; mmol/L), glycosuria (B; mmol/24 h) and urinary urea (C; mmol/24 h) of STZ-diabetic rats treated for 21 days with S. brasiliensis extract. Values are expressed as means ± SEM, n = 5–8 per group. Differences between groups were analysed with one-way ANOVA followed by Student–Newman–Keuls test (p < 0.05). *Differences with N; #differences with DC; Φdifferences with DSb250; ɛdifferences with DSb500.

Figure 3. Glycemia (A; mmol/L), glycosuria (B; mmol/24 h) and urinary urea (C; mmol/24 h) of STZ-diabetic rats treated for 21 days with S. brasiliensis extract. Values are expressed as means ± SEM, n = 5–8 per group. Differences between groups were analysed with one-way ANOVA followed by Student–Newman–Keuls test (p < 0.05). *Differences with N; #differences with DC; Φdifferences with DSb250; ɛdifferences with DSb500.

Figure 4. Body weight (A; g), food intake (B; g/24 h), water intake (C; mL/24 h) and urinary volume (D; mL/24 h) of STZ-diabetic rats treated for 21 days with S. brasiliensis extract. Values are expressed as means ± SEM, n = 5–8 per group. Differences between groups were analysed with one-way ANOVA followed by Student–Newman–Keuls test (p < 0.05). *Differences with N; #differences with DC; Φdifferences with DSb250; ɛdifferences with DSb500.

Figure 4. Body weight (A; g), food intake (B; g/24 h), water intake (C; mL/24 h) and urinary volume (D; mL/24 h) of STZ-diabetic rats treated for 21 days with S. brasiliensis extract. Values are expressed as means ± SEM, n = 5–8 per group. Differences between groups were analysed with one-way ANOVA followed by Student–Newman–Keuls test (p < 0.05). *Differences with N; #differences with DC; Φdifferences with DSb250; ɛdifferences with DSb500.

Table 2. Weight of liver, white adipose tissues (retroperitoneal, perirenal, epididymal), skeletal muscles (soleus, extensor digitorum longus, gastrocnemius) and liver glycogen content of STZ-diabetic rats treated for 21 days with S. brasiliensis extract.

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