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Maternal conjugated linoleic acid consumption prevented TAG alterations induced by a high-fat diet in male adult rat offspring
British Journal of Nutrition ( IF 3.6 ) Pub Date : 2020-04-01 , DOI: 10.1017/s0007114520001166
Marcela Aída González , Jimena Lavandera , Carolina Gerstner , Ana Clara Fariña , Juliana Saín , Claudio Adrián Bernal

Maternal nutritional programming by a high-fat (HF) diet is related to hepatic lipid accumulation and steatosis in offspring. Conjugated linoleic acid (CLA) might ameliorate impaired hepatic lipid homoeostasis; therefore, the aim was to investigate the potential preventive effect of maternal CLA consumption on TAG metabolism alterations induced by HF diets in adult male rat offspring receiving or not receiving CLA. Female Wistar rats were fed a control (C) diet, HF diet or HF diet supplemented with CLA (HF+CLA) for 4 weeks before mating and throughout pregnancy and lactation. After weaning, for 9 weeks, male offspring of C or HF rats continued with the same diets as their mothers (C/C or HF/HF groups, respectively) and male offspring of HF+CLA rats were fed HF or HF+CLA diets (HF+CLA/HF or HF+CLA/HF+CLA groups, respectively). Nutritional parameters, serum and liver TAG levels, the TAG secretion rate (TAG-SR) and the activities as well as gene expression of key hepatic enzymes involved in TAG regulation were assessed. The most interesting results were that maternal CLA decreased epididymal white adipose tissue weight and prevented serum and liver TAG accumulation induced by a HF diet in adult male offspring receiving or not receiving CLA. The prevention of liver steatosis in HF+CLA/HF+CLA and HF+CLA/HF offspring was associated with an increased hepatic TAG-SR. Overall, this study provides evidence that maternal CLA consumption programmes TAG regulation and in this way contributes to lowering lipid levels in tissues and preventing liver steatosis in particular.

中文翻译:

母体共轭亚油酸消耗可防止雄性成年大鼠后代的高脂肪饮食引起的 TAG 改变

高脂 (HF) 饮食的母体营养规划与后代的肝脏脂质积累和脂肪变性有关。共轭亚油酸 (CLA) 可能会改善受损的肝脂质稳态;因此,目的是研究母体 CLA 摄入对接受或未接受 CLA 的成年雄性大鼠后代 HF 饮食诱导的 TAG 代谢改变的潜在预防作用。雌性 Wistar 大鼠在交配前以及整个怀孕和哺乳期间被喂食对照 (C) 饮食、HF 饮食或补充有 CLA (HF+CLA) 的 HF 饮食。断奶后 9 周,C 或 HF 大鼠的雄性后代继续与其母亲相同的饮食(分别为 C/C 或 HF/HF 组),HF+CLA 大鼠的雄性后代喂食 HF 或 HF+CLA 饮食(分别为 HF+CLA/HF 或 HF+CLA/HF+CLA 组)。评估了营养参数、血清和肝脏 TAG 水平、TAG 分泌率 (TAG-SR) 以及参与 TAG 调节的关键肝酶的活性和基因表达。最有趣的结果是母体 CLA 降低了附睾白色脂肪组织的重量,并防止了接受或未接受 CLA 的成年男性后代中由 HF 饮食诱导的血清和肝脏 TAG 积累。HF+CLA/HF+CLA 和 HF+CLA/HF 后代肝脏脂肪变性的预防与肝脏 TAG-SR 增加有关。总体而言,这项研究提供了证据,证明母体 CLA 消耗计划 TAG 调节,并以这种方式有助于降低组织中的脂质水平,特别是预防肝脏脂肪变性。评估了 TAG 分泌率 (TAG-SR) 和参与 TAG 调节的关键肝酶的活性和基因表达。最有趣的结果是母体 CLA 降低了附睾白色脂肪组织的重量,并防止了接受或未接受 CLA 的成年男性后代的 HF 饮食诱导的血清和肝脏 TAG 积累。HF+CLA/HF+CLA 和 HF+CLA/HF 后代肝脏脂肪变性的预防与肝脏 TAG-SR 增加有关。总体而言,这项研究提供了证据,证明母体 CLA 消耗计划 TAG 调节,并以这种方式有助于降低组织中的脂质水平,特别是预防肝脏脂肪变性。评估了 TAG 分泌率 (TAG-SR) 和参与 TAG 调节的关键肝酶的活性和基因表达。最有趣的结果是母体 CLA 降低了附睾白色脂肪组织的重量,并防止了接受或未接受 CLA 的成年男性后代中由 HF 饮食诱导的血清和肝脏 TAG 积累。HF+CLA/HF+CLA 和 HF+CLA/HF 后代肝脏脂肪变性的预防与肝脏 TAG-SR 增加有关。总体而言,这项研究提供了证据,证明母体 CLA 消耗计划 TAG 调节,并以这种方式有助于降低组织中的脂质水平,特别是预防肝脏脂肪变性。最有趣的结果是母体 CLA 降低了附睾白色脂肪组织的重量,并防止了接受或未接受 CLA 的成年男性后代的 HF 饮食诱导的血清和肝脏 TAG 积累。HF+CLA/HF+CLA 和 HF+CLA/HF 后代肝脏脂肪变性的预防与肝脏 TAG-SR 增加有关。总体而言,这项研究提供了证据,证明母体 CLA 消耗计划 TAG 调节,并以这种方式有助于降低组织中的脂质水平,特别是预防肝脏脂肪变性。最有趣的结果是母体 CLA 降低了附睾白色脂肪组织的重量,并防止了接受或未接受 CLA 的成年男性后代中由 HF 饮食诱导的血清和肝脏 TAG 积累。HF+CLA/HF+CLA 和 HF+CLA/HF 后代肝脏脂肪变性的预防与肝脏 TAG-SR 增加有关。总体而言,这项研究提供了证据,证明母体 CLA 消耗计划 TAG 调节,并以这种方式有助于降低组织中的脂质水平,特别是预防肝脏脂肪变性。
更新日期:2020-04-01
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