Navigation Links
Research Reveals Nutrient's Impact on the Embryo
Date:11/19/2007

Vitamin A-derived retinoic acid helps guide development, scientists say

MONDAY, Nov. 19 (HealthDay News) -- U.S. researchers say they've uncovered new clues on how embryonic cells regulate levels of retinoic acid, a derivative of vitamin A.

Retinoic acid plays a vital role in embryo development, acting as a signal between cells to control development of the brain, limbs and many other tissues. Human embryos that get too much or too little retinoic acid may develop birth defects, noted a team from the University of California, Irvine.

When humans consume vitamin A -- found in many foods, including carrots, broccoli and sweet potatoes -- the body converts it into retinoic acid.

"If you don't get enough vitamin A in your diet -- or if you get too much -- your body compensates for that. Our study helps explain how this regulation occurs," Thomas Schilling, associate professor of developmental and cell biology at UC Irvine, said in a prepared statement.

The UC Irvine team examined retinoic acid in zebrafish embryos, which are often used in genetic studies as models for human development. They found that if levels of retinoic acid become too high, an enzyme called cyp26a1 degrades the excess retinoic acid in order to restore normal levels. If levels are too low, proteins called fibroblast growth factors (FGFs) slow retinoic acid degradation.

"Those two things work together to keep the whole system adjusted to the right level. Retinoic acid induces its own degradation, and FGFs, also present in the embryo, have the opposite effect by inhibiting retinoic acid degradation," Schilling said.

The study is published in the Nov. 20 issue of the journal Public Library of Science Biology.

More information

MedlinePlus has more about vitamin A.



-- Robert Preidt



SOURCE: University of California, Irvine, news release, Nov. 19, 2007


'/>"/>
Copyright©2007 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Stanford researchers find culprit in aging muscles that heal poorly
2. Children of depressed moms do better when dad is involved, SLU researcher finds
3. UCLA researchers identify markers that may predict diabetes in still-healthy people
4. Mayo Clinic researchers discover new diagnostic test for detecting infection in prosthetic joints
5. New research shows how chronic stress worsens neurodegenerative disease course
6. New research explores newborn in-hospital weight loss
7. Research may unlock mystery of autisms origin in the brain
8. Bipolar disorder relapses halved by Melbourne researchers
9. HIVs impact in Zimbabwe explored in new research
10. U.S. Research Funding Continues to Flatten as U.S. Health Costs Climb - in August 31 Science
11. Cell that triggers symptoms in allergy attacks can also limit damage, Stanford researchers find
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/8/2016)... ... February 08, 2016 , ... If you are feeling that your ... are not alone. According to the Center for Disease Control and Prevention (CDC), 34.9% ... diabetes and certain types of cancer, some of the leading causes of preventable death. ...
(Date:2/8/2016)... ... February 08, 2016 , ... Steve Helwig & Associates Insurance & ... community enrichment program, has teamed up with Citizens Opposed to Domestic Abuse in support ... abuse. To support all those victimized by the fear of violence in their own ...
(Date:2/8/2016)... ... February 08, 2016 , ... ... serving the greater Venice, FL area, has initiated a fundraiser for a two ... accident just four days after Christmas. To support this beautiful child who is ...
(Date:2/8/2016)... ... February 08, 2016 , ... ... firm, announced today that nominations will be accepted February 8, 2016 through ... , Awards include the Information Security Executive® of the Year, which ...
(Date:2/8/2016)... ... February 08, 2016 , ... Eating disorders and post-traumatic stress ... women and men with eating disorders report a history of trauma, research suggests ... of an eating disorder. , At the 2016 iaedp Symposium, the workshop, ...
Breaking Medicine News(10 mins):
(Date:2/8/2016)... BioPharma Corp. (CTI BioPharma) (NASDAQ and MTA:CTIC) today announced ... Food and Drug Administration (FDA) on February 4, 2016, ... on the clinical studies being conducted under the Company,s ... hold impacts part of the clinical work currently being ... clinical trials. --> ...
(Date:2/5/2016)... 2016  Despite the recent explosion in Big Data, ... to embrace Big Data due to the inherent costs ... side, organizations have begun looking to Big Data as ... adherence. --> --> ... LLC, Big Data has started informing many decisions. In ...
(Date:2/5/2016)... -- Redwood Scientific Technologies, Inc. announced today the development and ... balance their hormones. This product will be featuring Redwood,s ... Cardiff , President and CEO. "I am proud that ... of women across the country and around the world ... research and development team is confident that through the ...
Breaking Medicine Technology: