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This study focused on the effect of polyunsaturated fatty acids (PUFAs) during the lactation period of delta-6-desaturase knockout (D6D-KO) mice using an artificial rearing method. Newborn pups of D6D-KO male mice were separated from their dams within 48h and were fed artificial milk. Six formulations of milk were used: Control (Cont) milk (3.9% α-linolenic acid and 18% linoleic acid), + 1.3% arachidonic...
The essentiality of arachidonic acid (ARA) and docosahexaenoic acid (DHA) for growth and brain function using delta-6-desaturase knockout (D6D-KO) mice and a novel artificial rearing method was investigated. Newborn male wild type (WT) and homozygous D6D-KO pups were separated from their dams within 48h and fed artificial milk containing α-linolenic acid and linoleic acid (Cont), or supplemented with...
The results of several epidemiological studies and clinical trials investigating the effects of n-3 polyunsaturated fatty acids (PUFAs) on antenatal and postnatal depression remain controversial. In a previous case-control study of early pregnancy in Japan, we found an inverse association between eicosapentaenoic acid and risk of psychological distress after adjusting for possible confounders. Here,...
We previously reported the importance of long-chain polyunsaturated fatty acid (LC-PUFA (>C20)) intake, including arachidonic acid (ARA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), for growth. This follow-up study focuses on ARA using a novel artificial rearing model during the lactation period in delta-6-desaturase knockout (D6D-KO) mice. Newborn D6D-KO male mouse pups were separated...
The aim of this study was to use n-3 fatty acid-deficient pregnant mice to assess maternal behavior in the perinatal period. Female mice were fed either an n-3 fatty acid-deficient (n-3 Def) or -adequate (n-3 Adq) diet for two generations. The nest score and volume of the n-3 Def dams were lower than those of the n-3 Adq dams. In the observation of the post-delivery conditions, 40% of the n-3 Def...
In our previously study, we reported lower tear volume in with an n-3 fatty acid deficient mice and that the docosahexaenoic acid and total n-3 fatty acid levels in these mice are significantly reduced in the meibomian gland, which secretes an oily tear product. Furthermore, we noted very long chain fatty acids (≥25 carbons) in the meibomian gland. To verify the detailed mechanism of the low tear...
The effect of long-term oral administration of arachidonic acid (ARA, 240mg/kg/day) on brain function was assessed for mice maintained on an n-3 fatty acid adequate or deficient diet. The administration of ARA for 13 weeks resulted in an elevation of spontaneous motor activity, or the tendency thereof, in both the n-3 fatty acid adequate and deficient groups. However, the n-3 fatty acid deficient...
The purpose of this study was to determine the change in tear volume, as a predominant symptom of dry eye syndrome, in dietary n-3 fatty acid deficient mice compared with n-3 fatty acid adequate mice. The tear volume in n-3 fatty acid deficient mice was significantly lower than that in n-3 fatty acid adequate mice. In addition, the concentration of n-3 fatty acid in the lacrimal and meibomian glands,...
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