Navigation Links
Specialized Adult Stem Cells Re-Grow Fingertips
Date:8/24/2011

WEDNESDAY, Aug. 24 (HealthDay News) -- Specialized adult stem cells are make it possible for mammals to re-grow the tips of injured fingers or toes, rather than a "jack of all trades" cell type formed in response to serious injury, a new study shows.

Researchers from Stanford University found the regenerating stem cells are tissue-specific, meaning each has a particular job regenerating bone, skin, tendon, vessels or nerves.

The findings call into question a popular theory that damaged extremities are regenerated by a bump of cells considered "pluripotent," meaning that they are able to grow into a variety of cell types. This versatile bump of repair cells is called a blastema, but it appears to have nothing to do with fingertip regeneration.

"We've shown conclusively that what was thought to be a blastema is instead simply resident stem cells that are already committed to become specific tissue types," said Dr. Irving Weissman, director of Stanford's Institute for Stem Cell Biology and Regenerative Medicine in a news release. "The controversy about limb regeneration in mammals should be over."

Mice and some humans have the ability to re-grow the tips of injured fingers or toes. To better understand how they do this, Stanford researchers labeled specific tissue types of mice with fluorescent colors before cutting off a small part of the mice's toes. Over the course of three months, they examined the regenerated tissue.

The researchers found that each tissue type -- such as that found in nail, bone, tendon or blood vessels -- could only give rise to that type of tissue, Weissman said. "There was no cross-contribution between tissue types or germ layers," he said.

"I was extremely surprised," confessed first author Yuval Rinkevich. "I began the experiment very eager to find something like...one tissue type becoming another. But this is clearly not the case."

He and the other researchers noted,
'/>"/>

Copyright©2010 ScoutNews,LLC.
All rights reserved  

Page: 1 2

Related medicine news :

1. Specialized regulatory T cell stifles antibody production centers
2. Specialized blood plasma treatment does not improve rotator cuff healing, study finds
3. Clinical waste management needs specialized regulation
4. The Walden Group, a Specialized Strategic Healthcare Investment Banking Firm, Adds Key Advisory Services
5. Serving the World With Specialized Insurance for Missionaries
6. Racial disparities diminish in specialized cancer centers
7. Chateau Amber Retreat Provides Specialized Post-Cosmetic Surgery Care in Palm Springs Luxury
8. CareTech Solutions Presents Specialized Healthcare Call Center at HIMSS10
9. Short on specialized intensive care physicians, team-based approach improves ICU outcomes
10. Kellogg researcher helping eye care providers better assess driving in older adults
11. Study Shows Key Ways Young Adults Can Find, Keep a Job
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Specialized Adult Stem Cells Re-Grow Fingertips
(Date:9/2/2014)... September 02, 2014 The Dream2Walk Foundation along ... on Sept. 14th, 2014 during Spinal Cord Injury Awareness Month ... Lynn England, and Chuck Ligon. Linear Automotive will be there ... show. , Doors open at 2pm. The car show is ... one free pass to the concert. There will be trophies ...
(Date:9/2/2014)... Kathleen Doheny HealthDay ... The U.S. obesity epidemic is a driving force behind the ... study. Researchers looked at data from five national surveys ... increase in diabetes over time could be explained by factors ... U.S. adults. The investigators found that the prevalence of ...
(Date:9/2/2014)... By Steven Reinberg ... (HealthDay News) -- Stimulant medications -- such as Adderall, ... (ADHD) in children, won,t stunt their growth, a new ... final height as adults," said study researcher Dr. Slavica ... Clinic in Rochester, Minn. Katusic noted that results ...
(Date:9/2/2014)... HealthDay Reporter TUESDAY, Sept. 2, 2014 ... loss by blocking a certain nerve linked to appetite and ... patients. Using electric impulses to block the vagus nerve, ... suppress feelings of hunger. And, they did, just not to ... the nerve that connects the brain to the gut can ...
(Date:9/2/2014)... 2, 2014 (HealthDay News) -- Drinking and marijuana may ... a new study suggests. Researchers analyzed 2007 to ... school seniors who said they had used alcohol or ... drinking alcohol was associated with more unsafe driving, damage ... about actions while under the influence of alcohol, especially ...
Breaking Medicine News(10 mins):Health News:Gas Monkey Hosts Concert in Dallas Benefiting Dream2Walk Foundation with Linear Automotive 2Health News:Obesity Fueling Rise in Diabetes Rates, Study Finds 2Health News:Obesity Fueling Rise in Diabetes Rates, Study Finds 3Health News:ADHD Medications Won't Stunt Kids' Growth, Study Finds 2Health News:ADHD Medications Won't Stunt Kids' Growth, Study Finds 3Health News:Nerve Blocking Procedure Fails to Impress in Weight Loss Study 2Health News:Nerve Blocking Procedure Fails to Impress in Weight Loss Study 3Health News:Booze, Pot Bad for Teens in Different Ways, Study Suggests 2
... be making us hungrier, so we eat more, which in ... Yang and his colleagues at the Lawson Health Research Institute ... tissue can reproduce a hormone that stimulates fat cell production. ... way we think about and treat abdominal obesity. , Yang ...
... 16 Skanska USA Building Inc.,announced today that ... service the,growing Indiana construction markets. The announcement was ... Midwest operations., "Indiana is a strong construction ... "Skanska is an industry leader and after,working in ...
... Facing the ... Healthcare Industry, ... with U.S. News & World Report,hosted an exclusive panel discussion ... National Press Club in Washington, D.C.,The event, attended by Congressional ...
... with a faulty breast cancer gene could be at ... genes, according to research published this month in the ... University of Pennsylvania School of Medicine join an international ... 10,000 women carrying a BRCA1 or BRCA2 mutation for ...
... the source should lead to more effective vaccines, researchers say ... strains of virus that produce seasonal flu epidemics start in ... of the world, researchers report. , And by focusing on ... to improve their forecast of seasonal flu strains and develop ...
... Ala. - New clinical data showed some cancer patients ... AME-133v, said a researcher at the University of Alabama ... 15th during the 2008 annual meeting of the American ... 1 clinical trial data showed AME-133v had a potent ...
Cached Medicine News:Health News:Your belly fat could be making you hungrier 2Health News:Skanska Opens Indianapolis Office 2Health News:Siemens Addresses Cost vs. Value Issues In Healthcare and Technology 2Health News:Siemens Addresses Cost vs. Value Issues In Healthcare and Technology 3Health News:Breast cancer risk amplified by additional genes in combo with BRCA mutation 2Health News:Seasonal Flu Outbreaks Start in Asia: Study 2Health News:Seasonal Flu Outbreaks Start in Asia: Study 3
(Date:9/2/2014)... , Sept. 2, 2014  Boston Scientific Corporation (NYSE: ... announced agreement to purchase the Interventional business of ... Boston Scientific to offer physicians and healthcare systems ... challenging vascular conditions. The addition of ... technologies supports the Boston Scientific strategy to provide ...
(Date:9/2/2014)... DIEGO , Sept. 2, 2014  Volcano ... company focused on improving patient and economic outcomes ... innovative minimally invasive coronary and peripheral visualization, physiology ... be participating in the Morgan Stanley Healthcare conference ... by Scott Huennekens , president and chief ...
(Date:9/2/2014)... , Sept. 2, 2014  Arena Pharmaceuticals, Inc. (NASDAQ: ... Food and Drug Administration (FDA) has granted orphan drug ... hypertension. "The FDA Office of Orphan ... from sponsors to identify and designate drug candidates that ... evaluation and development of such products," said Craig ...
Breaking Medicine Technology:Boston Scientific Closes Acquisition Of Interventional Business Of Bayer AG 2Boston Scientific Closes Acquisition Of Interventional Business Of Bayer AG 3Boston Scientific Closes Acquisition Of Interventional Business Of Bayer AG 4Boston Scientific Closes Acquisition Of Interventional Business Of Bayer AG 5Arena Pharmaceuticals' APD811 Granted Orphan Drug Status for Pulmonary Arterial Hypertension 2Arena Pharmaceuticals' APD811 Granted Orphan Drug Status for Pulmonary Arterial Hypertension 3Arena Pharmaceuticals' APD811 Granted Orphan Drug Status for Pulmonary Arterial Hypertension 4
... SUNNYVALE, Calif., July 7, 2011 Cepheid (Nasdaq: ... for its 2011 second quarter ended June 30, 2011, on ... The company will host a management presentation at ... discuss the results.  To access the live webcast, please visit ...
... just three weeks after hearing oral argument, the First District ... judgment against Johnson & Johnson (NYSE: JNJ ) ... death case involving their Duragesic® fentanyl pain patch. ... in DiCosolo v. ALZA Corp, et al ., obtained ...
Cached Medicine Technology:Cepheid Schedules 2011 Second Quarter Financial Results Announcement and Webcast 2Heygood, Orr & Pearson: Court of Appeals Affirms $16.56 Million Judgment in Defective Fentanyl Patch Case 2Heygood, Orr & Pearson: Court of Appeals Affirms $16.56 Million Judgment in Defective Fentanyl Patch Case 3
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
Medicine Products: