Navigation Links
Peripheral nerve repair with fat precursor cells led to wider nerves and less muscle atrophy

Tampa, Fla. (June 16, 2009) To determine if guided fat (adipose) precursor cells (APCs) could improve nerve regeneration and functional recovery, researchers at the University of Pittsburgh (USA) used biodegradable nerve guides to transplant APCs into the injured peripheral nerves of laboratory rats.

"Adipose tissues, shown to be multipotent, have also been shown to be an abundant source of post-natal precursor cells that are relatively easy to isolate from fat tissue and in sufficient amounts to be injected immediately post-isolation," said Dr. Kacey Marra, lead author of a study published in the current issue of the journal Cell Transplantation (18:2).

Adipose precursor cells, said Marra and co-authors, have demonstrated an ability to differentiate in vitro into cartilage (chondrogenic), bone (osteogenic), fat (adipogenic) and muscle (myogenic) cell types.

Control groups for this study included those with no treatment, those receiving an autograft but no nerve guide tube, and those receiving an autograft and nerve guide tube but no APC transplant in the guide tube.

Researchers noted that the "gold standard" for nerve repair is the autograft to repair nerve gaps. Pre-clinical studies have shown that including Schwann cells within nerve conduits can enhance nerve regeneration. However, the incorporation of Schwann cells requires a second surgery, renders a secondary nerve nonfunctional, and requires Schwann cells in high numbers that are clinically challenging to obtain.

According to the researchers, significant differences in the sciatic functional index (SFI) were observed three weeks post-injury in the autografted, APC-transplanted group using nerve guides over a control group in which nerve guides were left empty. Researchers also observed the formation of a more robust nerve accompanied by modestly decreased muscle atrophy in the APC-transplanted group. No differences were observed after 12 weeks, however.

"We found that full regeneration of the sciatic nerve occurred in the rats receiving the autograft, the guide, and the guide loaded with APCs. No regeneration was observed in any of the rats in which the defect was left untreated," said Marra.

Their results also showed that transplanted human-derived APCs survived for up to 12 weeks in the injured peripheral nerve and formed a more robust nerve with nerve cells more than double the size of those formed using the conduit alone.

"The versatility of adult precursor cells, such as those from adipose, for the treatment of a number of disorders is promising and this study demonstrates their potential benefit towards nerve repair," said section editor Dr. John Sladek, professor of pediatrics and neuroscience at the University of Colorado School of Medicine.


Contact: Anita Srikameswaran
Cell Transplantation Center of Excellence for Aging and Brain Repair

Related biology news :

1. Seeing stem cells helps in fight against peripheral arterial disease
2. At risk for peripheral arterial disease? Simple quiz provides key so you can circulate better
3. Engineer develops detergent to promote peripheral nerve healing
4. Tumor-targeting viral therapy slows neuroblastoma, malignant peripheral nerve sheath tumors
5. Long-lasting nerve block could change pain management
6. Spun-sugar fibers spawn sweet technique for nerve repair
7. Motor nerve targeting to limb muscles is controlled by ephrin proteins
8. Shared survival mechanism explains why good nerve cells last and bad cancer cells flourish
9. UC Davis team refines cancer treatments to reduce potential nerve damage
10. Prostate cancer spurs new nerves
11. Mammals can be stimulated to regrow damaged inner retina nerve cells
Post Your Comments:
(Date:4/11/2017)... 2017 NXT-ID, Inc. (NASDAQ:   NXTD ... the appointment of independent Directors Mr. Robin D. Richards ... of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief ... to their guidance and benefiting from their considerable expertise as ...
(Date:4/5/2017)... YORK , April 5, 2017 Today ... is announcing that the server component of the HYPR ... known for providing the end-to-end security architecture that empowers ... HYPR has already secured over 15 million ... makers including manufacturers of connected home product suites and ...
(Date:4/3/2017)... , April 3, 2017  Data ... precision engineering platform, detected a statistically significant ... product prior to treatment and objective response ... the potential to predict whether cancer patients ... to treatment, as well as to improve ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... launched Rosalind™, the first-ever genomics analysis platform specifically designed for life science ... in honor of pioneering researcher Rosalind Franklin, who made a major contribution ...
(Date:10/11/2017)... ... , ... ComplianceOnline’s Medical Device Summit is back for its 4th year. The ... Francisco, CA. The Summit brings together current and former FDA office bearers, regulators, industry ... officials from around the world to address key issues in device compliance, quality and ...
(Date:10/11/2017)... ... October 11, 2017 , ... Disappearing forests and increased emissions are the main ... people each year. Especially those living in larger cities are affected by air pollution ... of the most pollution-affected countries globally - decided to take action. , “I knew ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... conjugate (ADC) therapeutics, today confirmed licensing rights that give it exclusive global ... technology developed in collaboration with Children’s Hospital Los Angeles (CHLA). Additionally, ...
Breaking Biology Technology: