Immunomodulation by cannabidiol in bovine primary ruminal epithelial cells

Area of Science:

• Veterinary Medicine
• Gastroenterology
• Pharmacology

Background:

• Ruminant livestock face health challenges like ruminal acidosis due to diet and stress.
• Cannabidiol (CBD), a hemp compound, is a potential anti-inflammatory agent for gastrointestinal issues.
• Limited research exists on CBD's effects in the ruminant gut due to hemp feeding restrictions.

Purpose of the Study:

• To investigate the immunomodulatory effects of CBD on ruminal epithelial cells (REC).
• To assess potential cytotoxic effects of varying CBD doses on REC.
• To explore CBD's role in managing inflammation in ruminant digestive health.

Main Methods:

• Primary ruminal epithelial cells (REC) were cultured and exposed to varying concentrations of Cannabidiol (CBD).
• Inflammation was induced using lipopolysaccharide (LPS) to model ruminal acidosis conditions.
• Gene expression analysis was performed to quantify pro-inflammatory cytokine responses.

Main Results:

• CBD at 10 μM showed no cytotoxicity, but 50 μM CBD was cytotoxic after 24 hours.
• CBD treatment reduced the expression of pro-inflammatory cytokines IL1B and IL6 when inflammation was induced.
• Preventative application of CBD decreased IL6 and CXCL10 expression, contingent on its presence in the culture media.

Conclusions:

• CBD demonstrates immunomodulatory properties in primary ruminal epithelial cells.
• CBD may reduce cytokine transcription during inflammation and as a preventative measure.
• The anti-inflammatory effects of CBD are dependent on its sustained presence in the cellular environment.