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The FLS mouse: a new inbred strain with spontaneous fatty liver

机译:FLS小鼠:具有自发性脂肪肝的新近交系

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A new strain of mouse, named FLS (fatty liver Shionogi), which develops spontaneous fatty liver without obesity, was established by inbreeding. Morphologic, physiologic, and genetic characterization of the strain was done. Characteristics of male FLS mice were compared with those of the sister strain, dd Shionogi (DS), which does not develop spontaneous fatty liver. A genetic cross experiment was performed by mating FLS with C3H/He/Shi mice. The hepatocytes of neonatal FLS mice contained fine lipid droplets throughout the lobules, and large lipid droplets appeared as mice aged. Liver triglyceride concentrations of FLS mice were fivefold higher than those of DS mice, but serum lipid concentrations and the lipoprotein profile did not indicate abnormalities. Higher plasma aspartate transaminase and alanine transaminase activities in FLS, compared with DS mice, suggested hepatocellular lesions. The genetic cross experiment suggested that the fatty liver formation is a complex polygenic trait. The FLS mice develop a progressive hepatic steatosis without obesity and diabetes. The FLS mouse might be a good model for investigating hepatic disorders accompanied by fatty liver unrelated to alcoholism or obesity.
机译:通过近亲繁殖建立了一种新的小鼠品系,称为FLS(脂肪肝Shionogi),它能发展出无肥胖的自发性脂肪肝。对菌株进行了形态,生理和遗传学表征。将雄性FLS小鼠的特征与未发育自发性脂肪肝的姐妹菌株dd Shionogi(DS)的特征进行了比较。通过使FLS与C3H / He / Shi小鼠交配进行遗传交叉实验。新生FLS小鼠的肝细胞在整个小叶中均包含细小脂质滴,随着年龄的增长,大脂质滴出现。 FLS小鼠的肝甘油三酯浓度比DS小鼠高五倍,但血清脂质浓度和脂蛋白谱未显示异常。与DS小鼠相比,FLS中较高的血浆天冬氨酸转氨酶和丙氨酸转氨酶活性提示肝细胞病变。遗传交叉实验表明,脂肪肝的形成是一个复杂的多基因性状。 FLS小鼠发生进行性肝脂肪变性,而没有肥胖和糖尿病。 FLS小鼠可能是研究伴有与酒精中毒或肥胖无关的脂肪肝的肝脏疾病的良好模型。

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