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Marine lipid-based liposomes increase in vivo FA bioavailability
Maud Cansell1, Fabienne Nacka, Nicole Combe
1Institut des Sciences et Techniques des Aliments de Bordeaux, Nutrition et Signalisation Cellulaire, F-33405 Talence Cedex, France. m.cansell@istab.u-bordeaux1.fr
Lipids
|July 26, 2003
Summary
Marine liposomes significantly enhance omega-3 polyunsaturated fatty acid (PUFA) absorption compared to fish oil. These liposomes show promise as effective oral supplements for increasing PUFA bioavailability.
Area of Science:
- Nutritional Science
- Biochemistry
- Lipid Metabolism
Background:
- Oral delivery of omega-3 polyunsaturated fatty acids (PUFA) often faces bioavailability challenges.
- Liposomes derived from marine lipids offer a potential solution for improved fatty acid (FA) delivery.
Purpose of the Study:
- To evaluate liposomes as oral vectors for enhancing PUFA bioavailability.
- To compare the absorption of FAs from liposomes versus fish oil in vivo.
- To investigate the role of alpha-tocopherol in FA absorption.
Main Methods:
- Thoracic lymph duct-cannulated rats were used for in vivo absorption studies.
- Intragastric feeding of liposomes or fish oil containing FAs.
- Lipid and FA analyses were performed on lymph and feces.
- In vitro liposome behavior was assessed under simulated gastrointestinal conditions.
Main Results:
- Liposomes significantly increased FA absorption (98%) compared to fish oil (73%).
- DHA proportion in lymph was higher with liposomes (78%) than fish oil (47%).
- Intramolecular distribution of n-3 PUFA in chylomicron triglycerides depended on the lipid source.
Conclusions:
- Marine liposomes are effective oral delivery systems for PUFA supplements.
- Liposomes enhance the bioavailability of omega-3 fatty acids.
- Marine phospholipids show potential for developing advanced PUFA supplements.