Related Experiment Video
Updated: Dec 16, 2025
The Use of Gas Chromatography to Analyze Compositional Changes of Fatty Acids in Rat Liver Tissue during Pregnancy
Published on: March 13, 2014
Perinatal exposure to diets with different n-6:n-3 fatty acid ratios affects olfactory tissue fatty acid composition
Spiro Khoury1, Vanessa Soubeyre1, Stéphanie Cabaret1
1Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, 21000, Dijon, France.
Insights
Maternal diet significantly impacts olfactory tissue lipid profiles in offspring. Specific dietary fatty acid changes, like reduced n-3 alpha-linolenic acid (ALA), alter polyunsaturated fatty acids (PUFAs) in the olfactory mucosa and bulb.
Area of Science:
- Neuroscience
- Nutritional Science
- Lipid Biochemistry
Background:
- The olfactory mucosa (OM) and olfactory bulb (OB) process smell signals and are rich in n-3 and n-6 polyunsaturated fatty acids (PUFAs).
- The impact of maternal diet on offspring olfactory tissue lipid composition is not well understood.
Purpose of the Study:
- To investigate how maternal diets, varying in alpha-linolenic acid (ALA) and n-3 long-chain PUFAs, affect the lipid profiles of olfactory tissues in dams and their offspring.
- To determine the sensitivity of olfactory tissue PUFA status to early developmental diet.
Main Methods:
- Mice dams were fed diets deficient in ALA or supplemented with n-3 long-chain PUFAs during the perinatal period.
- Lipid composition of maternal and offspring olfactory tissues (OM and OB) was analyzed.
- Structural analysis of phospholipid molecular species in olfactory tissues was performed.
Main Results:
- A low n-3 ALA diet reduced n-3 PUFAs and increased n-6 PUFAs in both OM and OB.
- A high n-3 PUFA diet decreased n-6 PUFAs and increased n-3 PUFAs.
- Maternal diets significantly altered the molecular species profiles of major phospholipids in offspring olfactory tissues.
Conclusions:
- Offspring olfactory tissue PUFA status is highly sensitive to maternal dietary composition during early development.
- Dietary fatty acid manipulation can profoundly influence the lipid landscape of the olfactory system from the perinatal stage.
Abstract:
The olfactory mucosa (OM) and the olfactory bulb (OB) are responsible for the detection and processing of olfactory signals. Like the brain and retina, they contain high levels of n-3 and n-6 polyunsaturated fatty acids (PUFAs), which are essential for the structure and function of neuronal and non-neuronal cells. Since the influence of the maternal diet on olfactory lipid profiles of the offspring has been poorly explored, we examined the effects of feeding mice during the perinatal period with diets containing an adequate linoleic acid level but either deficient in α-linolenic acid (ALA) or supplemented in n-3 long-chain PUFAs on the lipid composition of dams and weaning offspring olfactory tissues. In both the OM and OB, the low n-3 ALA diet led to a marked reduction in n-3 PUFAs with a concomitant increase in n-6 PUFAs, whereas consumption of the high n-3 PUFA diet reduced n-6 PUFAs and increased n-3 PUFAs. Structural analysis showed that the molecular species profiles of the main phospholipid classes of olfactory tissues from weaning pups were markedly affected by the maternal diets. This study demonstrates that the PUFA status of olfactory tissues is sensitive to diet composition from the early stages of development.
