High-fat Diet Increases Phospholipid Peroxidation in the Liver of Mature Fischer 344 Rats

Hayasaka, Saki; Kimura, Fumiko; Kato, Shunji; Shimizu, Naoki; Ito, Junya; Higuchi, Oki; Izumisawa, Katsuhiro; Miyazawa, Teruo; Nakagawa, Kiyotaka

doi:10.5650/jos.ess16225

Cited by 1 publication

(1 citation statement)

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“…Therefore, the lower MDA concentrations and lipid peroxidation of CON-LD and CON-L5 mice may reflect lower milk production compared to CON-L100 and all HF groups. HF diets are also associated with peroxidation of lipids and associated pathologies (for example, non-alcoholic fatty liver disease and liver cirrhosis) ( Martín-Fernández et al, 2022 ; Hayasaka et al, 2017 ; Jiang et al, 2022 , 2011 ). Further studies are needed to understand the effect of maternal diet on lipid peroxidation and the potential consequence to offspring being exposed to elevated levels in milk.…”

Section: Discussionmentioning

confidence: 99%

Impact of high-fat diet and exposure to constant light on reproductive competence of female ICR mice

Teeple,

Rajput,

Scinto

et al. 2023

Biology Open

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Obesity and exposure to light at night are prevalent in modern society and associated with changes in physiology and behavior that can affect a female's ability to support offspring growth during pregnancy and lactation. A 2X3 factor study of ICR mice was conducted to determine the effect of diet [control (CON; 10% fat) or high fat (HF; 60% fat)] and exposure to regular 12 h light:dark cycles (LD) or continuous low (L5) or high (L100) lux of light on gestation length, birth litter size, milk composition and litter growth to lactation day 12. HF diet reduced birth litter size, but increased postnatal d 12 litter weight (P<0.05), whereas constant light tended to increase litter weight (P=0.07). Continuous light increased gestation length, altered dam feed intake, increased serum prolactin and increased final dam and mammary gland weight (P<0.05), while decreasing mammary ATP content and milk lactose (P<0.05). Correlation analysis indicated a positive relationship between final litter weight and mammary size, metabolic stores (e.g. maternal fat pad weight), kcal of feed intake, and gestation length (P<0.05). Although CON mice spent more time eating than HF dams, the calorically dense HF diet was related to greater rates of litter growth to peak lactation. Constant light circadian disrupting effects appear to be confounded by a potential long day photoperiod response exemplified by higher circulating levels of prolactin and increased body and mammary weight of females exposed to these conditions. Other model systems may be better to study the interacting effects of obesity and circadian disruption on reproductive competence.

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