Control of Glucose Metabolism in Isolated Acini of the Lactating Mammary Gland of the Rat EFFECTS OF OLEATE ON GLUCOSE UTILIZATION AND LIPOGENESIS By ALISON M. ROBINSON and DERMOT

نویسنده

  • H. WILLIAMSON
چکیده

Oleate (1 mM) had only small inhibitory effects on glucose utilization and lipogenesis in acini isolated from rat mammary gland. Esterification of [1-14C]oleate was unaffected by insulin but was decreased by 60% by acetoacetate (2mM). Glycerol (1mM), but not insulin, relieved this inhibition. These experiments provide further support for the role of acetoacetate in regulating substrate utilization by the gland.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The relation of glucose oxidation to lipogenesis in mammary tissue.

Earlier studies with rat liver slices indicated that lipogenesis is dependent upon glucose utilization. Thus, liver slices prepared from fasted rats suffer from a lowered capacity to convert added acetate to fatty arids, and this defect in lipogenesis can be repaired by previous administration of glucose (1). hlore recently it was shown that an increase in fatty acid synthesis from acetate can ...

متن کامل

Lipogenesis by acini from mammary gland of lactating rats.

Intact acini were prepared from the mammary gland of lactating rats by treatment with collagenase. The acini were obtained in high yield. The preparation offers considerable advantage over the use of tissue slices. The acini were incubated with glucose, lactate, pyruvate, and acetate labeled with 14C and tritium, as single substrates or in combination with glucose. Synthesis of fatty acids from...

متن کامل

Studies on rat adipose tissue in vitro. II. Effects of insulin on the metabolism of specifically labeled glucose.

In the preceding report from this laboratory (1) insulin added in vitro has been shown to produce a striking and consistent stimulation of glucose uptake, glucose oxidation, and glucose conversion to lipide by the epididymal fat pad of the male rat. Furthermore, although insulin added in vitro did not stimulate lipogenesis from pyruvate or acetate when glucose was absent from the medium, the ho...

متن کامل

Studies on Rat Adipose Tissue in Vitro

In the preceding report from this laboratory (1) insulin added in vitro has been shown to produce a striking and consistent stimulation of glucose uptake, glucose oxidation, and glucose conversion to lipide by the epididymal fat pad of the male rat. Furthermore, although insulin added in vitro did not stimulate lipogenesis from pyruvate or acetate when glucose was absent from the medium, the ho...

متن کامل

Eicosapentaenoic fatty acid increases leptin secretion from primary cultured rat adipocytes: role of glucose metabolism.

Eicosapentaenoic acid (EPA), one of the n-3 polyunsaturated fatty acids, has been shown to stimulate leptin mRNA expression and secretion in 3T3-L1 cells. However, other studies have reported inhibitory effects of EPA on leptin expression and secretion in vivo and in vitro. To determine the direct effects of EPA on basal and insulin-stimulated leptin secretion, isolated rat adipocytes were incu...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005