Characterization of the fatty acid profile in the ventral midbrain of mice exposed to dietary imbalance between omega-6 and omega-3 fatty acids during specific life stages

Author:

Sakayori NobuyukiORCID,Katakura Masanori,Setogawa Susumu,Sugita Makoto,Kobayashi Kazuto

Abstract

Abstract Objective Omega-6 (n-6) and omega-3 (n-3) polyunsaturated fatty acids (PUFAs) are essential nutrients. Dietary imbalance between these PUFAs, in particular high in n-6 PUFAs and low in n-3 PUFAs (n-6high/n-3low), is common in modern society. We have previously reported that C57BL/6 mouse male offspring derived from mothers exposed to an n-6high/n-3low diet during the gestation had an augmented ventral midbrain dopamine system in adulthood; however, the fatty acid composition in this brain region has not yet been investigated. This follow-up study aims to characterize the fatty acid profile of the ventral midbrain of mice exposed to the n-6high/n-3low diet during specific life stages. Results n-6 PUFAs, especially linoleic acid, were increased in the ventral midbrain of offspring exposed to the n-6high/n-3low diet during the gestation compared to those exposed to a well-balanced control diet throughout life. On the other hand, n-3 PUFAs, especially docosahexaenoic acid, were decreased in the ventral midbrain of offspring exposed to the n-6high/n-3low diet during the gestation, lactation, or postweaning period compared to those exposed to the control diet throughout life. Thus, exposure to the n-6high/n-3low diet in pregnancy increases linoleic acid and that in any life stage decreases docosahexaenoic acid in the offspring's ventral midbrain.

Funder

Japan Society for the Promotion of Science

Lotte Foundation

Publisher

Springer Science and Business Media LLC

Subject

General Biochemistry, Genetics and Molecular Biology,General Medicine

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