Limb Development: The Rise and Fall of Retinoic Acid

نویسندگان

  • Mark Lewandoski
  • Susan Mackem
چکیده

Retinoic acid was thought to play a key instructive role during limb bud initiation and subsequent patterning. New results argue instead that its role is permissive: retinoic acid is essential only to antagonize early axial Fgf signals that otherwise inhibit the limb field.

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

اثرات مورفوژنیک و تراتوژنیک اسید رتینوئیک در جنین جوجه

ABSTRACT: Retinoic acid "one of the derivatives of vitamin A "has different morphogenic and teratogenic effects on developing organs. For this reason, the present study is an attempt to examine the effects of retinoic acid on limb bud ,eye and body axis of chick embryo in the stages of 11-12 Humburger and Hamilton. The experiments cartied out in this study was based on 140 white eggs which h...

متن کامل

Effect of retinoic acid on neural tube development in chick embryo

retinoic acid is one of the derivatives of vitamin A.it is used for treatment of dermatitis,but it has different teratogenic effects on developing organs depending on the different stages of embryonic life.neural  tube is made of two different parts:primary neural tube originated from embryo germinal layer and and secondary neural tube originated from tail bud.the persent study was designed to ...

متن کامل

The Effect of Granulosa Cells Co-culture and Retinoic Acid on Maturation and Development of Immature Mouse Oocytes in Vitro

Purpose: The purpose of this study was to develop an appropriate medium for in vitro maturation (IVM) of immature mouse oocytes. Materials and Methods: Germinal vesicle of female NMRI mouse oocytes (6-8 weeks old) were collected from ovaries and cultured in maturation medium MEM-a, supplemented with: 100 mlIU/ml rFSH+7.5 IU/ml hCG+5% FCS (Control group) and 2mM all- trans retinoic acid (t-RA) ...

متن کامل

Investigating the Effects of Hydro-alcoholic Urtica Dioica Extract and Retinoic Acid on Follicular Development: An Animal Study

Background: Urtica dioica (UD), as a natural antioxidant, has positive effects on oocyte maturation. This study aimed to investigate the effects of hydro-alcoholic UD extract and retinoic acid on follicular development in an in vitro fertilization (IVF) condition.    Methods: A total of 40 female Wistar rats were randomly divided into 5 groups: group 1 received normal saline, group 2 was given...

متن کامل

The Effect of Retinoic Acid on Seminal Vesicle Epithelial Cell

Purpose: The seminal vesicles are androgen dependent exocrine glands producing protein-rich secretion. The retinoic acid has been implicated as a signaling molecule for the seminal vesicle development. In the present study, the effect of retinoic acid on seminal vesicle epithelial cell of neonatal mouse was investigated. Materials and Methods: Newborn male N-MRI mice were injected intraperiton...

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:
  • Current Biology

دوره 19  شماره 

صفحات  -

تاریخ انتشار 2009