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Lipid vehicles for intestinal lymphatic drug absorption
The Journal of Pharmacy and Pharmacology
|January 1, 1987
Summary
Dietary lipids, including arachis oil and fatty acids, increase chylomicron levels in lymph. Higher fatty acid unsaturation speeds up chylomicron synthesis, impacting lymphatic drug delivery.
Area of Science:
- Lipid metabolism
- Gastrointestinal physiology
- Lymphatic system dynamics
Background:
- Understanding how dietary lipids are absorbed and processed is crucial for nutritional science.
- Lipoprotein metabolism plays a key role in the transport of fats in the body.
- The lymphatic system is a potential route for drug delivery.
Purpose of the Study:
- To investigate the effects of different lipids on lipoprotein fractions in mesenteric lymph.
- To determine the relationship between fatty acid saturation and chylomicron synthesis rate.
- To assess the implications for lymphatic drug delivery vehicles.
Main Methods:
- Rats were administered intraduodenally with arachis oil, oleic, linoleic, and linolenic fatty acids.
- Lipoprotein fractions in mesenteric lymph were monitored.
- Chylomicron concentrations and synthesis rates were analyzed.
Main Results:
- All tested lipids increased the chylomicron fraction in mesenteric lymph.
- VLDL and LDL fractions were not significantly affected.
- Increased fatty acid unsaturation correlated with faster chylomicron synthesis.
- Linoleic acid and arachis oil yielded the highest chylomicron concentrations.
Conclusions:
- Lipid absorption and metabolism vary based on fatty acid composition.
- Fatty acid unsaturation influences the rate of chylomicron formation.
- These findings are relevant for optimizing lipid-based vehicles for lymphatic drug delivery.