Glucose transporter expression in rat mammary gland.

نویسندگان

  • A F Burnol
  • A Leturque
  • M Loizeau
  • C Postic
  • J Girard
چکیده

The expression of different glucose transporter isoforms was measured during the development and differentiation of the rat mammary gland. Before conception, when the mammary gland is mainly composed of adipocytes, Glut 4 and Glut 1 mRNAs and proteins were present. During pregnancy, the expression of Glut 4 decreased progressively, whereas that of Glut 1 increased. In the lactating mammary gland only Glut 1 was present, and was expressed at a high level. The absence of Glut 4 suggests that glucose transport is not regulated by insulin in the lactating rat mammary 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

Glucose transporter gene expression in bovine mammary gland.

Transport of glucose across the plasma membrane of mammary epithelial cells is believed to be a passive process of facilitated diffusion mediated by facilitative glucose transporter(s). This article presents three lines of evidence that indicate the expression of sodium/glucose cotransporter (SGLT1) in the mammary gland of lactating and nonlactating cows. First, transcripts of SGLT1 mRNA rangin...

متن کامل

Localization and gene expression of glucose transporters in bovine mammary gland.

Glucose uptake in the mammary gland is a rate-limiting step in milk synthesis. To study glucose transporters in the bovine mammary gland, the erythrocyte-type glucose transporter (GLUT1) and the insulin-responsive glucose transporter (GLUT4) proteins were assessed by Western blotting and immunohistochemical staining, using polyclonal antibodies against the C-terminal peptide of GLUT1 and GLUT4....

متن کامل

Bovine glucose transporter GLUT8: cloning, expression, and developmental regulation in mammary gland.

GLUT8 is a newly identified member of the facilitative glucose transporter family, which characteristically exhibits high-affinity glucose transport activity. The expression of GLUT8 has been shown to depend on gonadotropin secretion in human testes and to be regulated by insulin in the blastocyst. To characterize GLUT8 and investigate its role in normal mammary gland function, we cloned and se...

متن کامل

Regulation of glucose transporter gene expression in mammary gland, muscle, and fat of lactating cows by administration of bovine growth hormone and bovine growth hormone-releasing factor.

Primiparous cows received 29 mg of bovine growth hormone (bGH)/d, or 12 mg of bovine growth hormone-releasing factor (bGHRF)/d by continuous i.v. infusion, or no treatment (controls) from 118 to 181 d postpartum. Compared with controls, bGHRF and bGH did not influence the amount of erythrocyte-type glucose transporter (GLUT1) protein in the mammary gland; however, GLUT1 mRNA was increased (P < ...

متن کامل

An overview of solute carrier family (facilitated glucose transporter) genes and their role in bovine mammary gland functioning

Milk yield greatly depends on mammary lactose synthesis due to its osmoregulatory property for mammary uptake of wate. A large amount of glucose is required by lactating dairy cows as the main precursor for lactose synthesis. Solute carriers (glucose transporters) in the bovine mammary gland play a key role in the transport of glucose and therefore milk synthesis. Different sugar transporters h...

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:
  • The Biochemical journal

دوره 270 1  شماره 

صفحات  -

تاریخ انتشار 1990