Five bitter compounds display different anti-inflammatory effects through modulating cytokine secretion using mouse...

Area of Science:

• Pharmacology
• Immunology
• Natural Products

Background:

• Traditional Chinese Medicine recognizes bitter foods for their anti-inflammatory properties.
• Bitter compounds are increasingly studied for their therapeutic potential.

Purpose of the Study:

• To investigate the in vitro anti-inflammatory effects of five selected bitter compounds: aloperine, amygdalin, berberine, crotaline, and naringenin.
• To assess the impact of these compounds on cytokine secretion profiles in mouse splenocytes.

Main Methods:

• Primary mouse splenocytes were treated with bitter compounds in the presence or absence of lipopolysaccharide (LPS).
• Cytokine levels, including interleukin-10 (IL-10), IL-6, and tumor necrosis factor-alpha (TNF-α), were measured using enzyme-linked immunosorbent assay (ELISA).
• Cytotoxic effects of the compounds were evaluated.

Main Results:

• All tested bitter compounds, except amygdalin, exhibited cytotoxic effects at certain doses.
• At non-cytotoxic doses, all compounds except amygdalin demonstrated anti-inflammatory activity by modulating the ratios of pro-inflammatory to anti-inflammatory cytokines (IL-6/IL-10 and TNF-α/IL-10).
• Berberine and naringenin showed the most significant anti-inflammatory potential, with berberine exhibiting both preventive and repair activities.

Conclusions:

• Selected bitter compounds possess anti-inflammatory properties, acting through the modulation of cytokine secretion.
• Berberine and naringenin are promising candidates for further investigation as natural anti-inflammatory agents.
• Further research is warranted to explore the mechanisms and therapeutic applications of these bitter compounds.