Navigation Links
Scientists find out why living things are the size they are -- and none other
Date:4/7/2010

If you consider yourself to be too short or too tall, things are looking up, or down, depending on your vertical disposition. New research published online in The FASEB Journal (http://www.fasebj.org) explains how we grow, how our bodies maintain correct proportions, and offers insight into what goes wrong with growth disorders and unregulated cell growth in cancer.

"We hope that these insights into the mechanisms controlling body growth will help us understand better the reasons for the excessive growth of cancer cells and also provide new approaches to turn growth back on in normal cells in order to regenerate damaged organs," said Julian C. Lui, Ph.D., a researcher involved in the work from the Eunice Kennedy Shriver National Institute of Child Health and Human Development at the National Institutes of Health in Bethesda, Maryland.

Scientists studied which genes were active in young animals (growing rapidly) and compared them to the same genes in older animals (growing slowly). Then they identified which genes were "turned off" simultaneously in multiple organs with age. To understand the consequences of these genes being turned off, the researchers experimentally turned them off in cultured cells and observed the effects. They found that rapid growth in early life is a response to the activation of multiple genes that stimulate growth. These same genes are progressively turned off during the maturation process, causing growth to slow. This process occurs simultaneously in multiple organs, which explains why organs all stay in proportional size as the body grows. This process is not controlled by age. Instead, genes are turned off when organs achieve a certain level of growth.

"This important work answers the question of why any animal including us has a certain size," said Gerald Weissmann, M.D., Editor-in-Chief of The FASEB Journal, "As this study shows, growth is dictated by organ development, and no one wishes their organs to be abnormally large or small."


'/>"/>

Contact: Cody Mooneyhan
cmooneyhan@faseb.org
301-634-7104
Federation of American Societies for Experimental Biology
Source:Eurekalert

Related medicine news :

1. Scientists: Soccer improves health, fitness and social abilities
2. Pan-Asian hub for life scientists to open in Suzhou, China, on Monday, April 6
3. Scientists Find Clues to How the Body Fights Off HIV
4. Caltech scientists uncover structure of key protein in common HIV subgroup
5. Start spreading the news: NYU scientists find therapeutic target to stop cancer metastases
6. Scientists Tweak Subjects Brains to Alter Their Moral Choices
7. Scientists in hot pursuit of first new drug for global killer in 50 years
8. Top Scientists Explore the Origin of Life in Annual Lasker Lecture at Scripps Research Institute Florida Campus
9. Anti-obesity drugs unlikely to provide lasting benefit according to scientists
10. University of Michigan scientists identify chemical in bananas as potent inhibitor of HIV infection
11. Scientists Find Stem Cells in Hair That Can Become Skin
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/24/2017)... ... February 24, 2017 , ... ... again hosted their Military Wedding Giveaway, with the winning couple announced on Feb. ... with services generously donated from local vendors: A Matter of Taste, Ryan Rousseau ...
(Date:2/23/2017)... ... February 23, 2017 , ... On February 22, ... a letter to withdraw previous guidance issued by the Obama Administration requiring ... issued in May 2016 by the Obama Administration came in response to a ...
(Date:2/23/2017)... (PRWEB) , ... February 23, 2017 , ... ... organization devoted exclusively to funding innovative lymphoma research and serving the lymphoma community ... will return to the La Gorce Country Club in Miami Beach to host ...
(Date:2/23/2017)... ... 2017 , ... The American Cleft Palate-Craniofacial Association (ACPA) is pleased to announce ... a longtime supporter of the event. , "We are pleased that KLS Martin is ... Havlik, 2017 ACPA President. "KLS Martin has a long track record of support of ...
(Date:2/23/2017)... Hollywood, CA (PRWEB) , ... February 23, 2017 , ... ... pleased to announce that they are sponsoring a raffle. Throughout the month of February, ... Winners will receive a gift card for a dinner for two at the Cheesecake ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... YORK , Feb. 23, 2017  The ... 330.6 million by 2021 from USD 275.9 million ... Read the full report: http://www.reportlinker.com/p04718602-summary/view-report.html ... increasing spending on pharmaceutical R&D, and growth in ... driving the market growth for particle counters. On ...
(Date:2/23/2017)... , Feb 23, 2017 Research and Markets ... Price Analysis and Strategies - 2016" report to their offering. ... The latest ... provides drug pricing data and benchmarks in the global Autism Spectrum ... What are the key drugs marketed for Autism ...
(Date:2/23/2017)... CITY, Calif., Feb. 23, 2017 Nevro Corp. (NYSE: ... evidence-based solutions for the treatment of chronic pain, today reported ... December 31, 2016. 2016 Accomplishment & Highlights: ... full year 2016, an increase of 228% as reported, over ... for 2016, an increase of 612% over the prior year ...
Breaking Medicine Technology: