Navigation Links
Stroke victims may benefit from stem cell transplants
Date:1/27/2008

Tampa, Fla. (Jan. 28, 2008) According to two studies published in the current issue of CELL TRANSPLANTATION (Vol.16 No.10), stroke victims may benefit from human mesenchymal stem cell (hMSC) or bone marrow stromal cell (BMSCs) transplantation. In both studies, the migration of chemically tagged transplanted stem cells were tracked to determine the degree to which the transplanted cells reached damaged areas of the brain and became therapeutically active.

Tracking transplanted hMSCs to infarcted areas

In a study carried out by Korean researchers, labeled hMSCs (early precursor cells to musculoskeletal, blood, vascular and urogenital systems) were transplanted into animal stroke models with cerebral artery occlusion and tracked by magnetic resonance imaging (MRI) at two days, one week, two weeks, six weeks and ten weeks after transplant.

Cells started showing indications of migration as early as one or two weeks following transplantation, said lead author Jihwan, Song, DPhil, of the Pochon CHA University College of Medicine. At 10 weeks, the majority of the cells were detected in the core of the infarcted area.

The study concluded that there is a strong tendency for transplanted hMSCs to migrate toward the infarcted area regardless of injection site but that the degree of migration was likely based on differences in each animals ischemic condition.

We speculate that the extensive migratory nature of stem cells and their utilization will provide an important tool for developing novel stroke therapies, said Song.

BMSCs migrate to damaged brain tissue, improve neural function

In a joint Canadian, Chinese study, BMSCs - connective tissue cells - were injected into animals 24 hours following middle cerebral artery occlusion. Using laser scanning confocal microscopy to track fluorescent signals and immuno markers attached to the cells, researchers found that within seven days of the injection the BMSCs had migrated through the region of the middle cerebral artery into the scar area and border zone of the ischemic region.

We evaluated vascular density in the ischemic region in all animals seven days after cell transplantation, said study lead author Ren-Ke Li, MD, PhD. The animals exhibited significant reductions in scar size and cell death and improvements in neurological function when compared to controls that received no BMSCs.

Researchers concluded that the intravenous delivery of bone marrow-derived cells may enhance tissue repair and, in turn, functional recovery after a stroke. While the potential mechanisms for this recovery are unclear, among the possibilities are that the brain microenvironment early on following a stroke may mimic brain development. Subsequent elevated levels of growth factors might enhance homing of BMSCs to the injured area and induce cell proliferation.

Our results support the potential therapeutic use of BMSCs after a stroke, concluded Li.

Editors comments:

Both studies lend important support to a growing body of laboratory evidence that bone marrow is a remarkable adult stem cell source for transplant therapy following stroke, says Cell Transplantation associate editor Cesar V. Borlongan, Ph.D. of the Medical College of Georgia. The non-invasive MRI visualization of pre-labeled BMSCs could become a routine clinical marker for transplanted cells as well as for safety and efficacy.


'/>"/>

Contact: Jihwan Song
Jsong@cha.ac.kr
82-234-683-393
Cell Transplantation Center of Excellence for Aging and Brain Repair
Source:Eurekalert

Related biology news :

1. Blood pressure drug telmisartan shows powerful activity against stroke
2. Forests could benefit when fall color comes late
3. Biomass production -- careful planning can bring many benefits
4. SAGEs American Journal of Lifestyle Medicine looks at the health benefit of oats
5. Surprise -- cholesterol may actually pose benefits, study shows
6. RAND paper finds diesel, hybrid vehicles can provide more societal benefits than gas-powered autos
7. New Actemra data shows significant benefit for patients suffering from rheumatoid arthritis
8. New data shows benefits of MitraClip for patients with mitral regurgitation
9. The benefits of 80 million years without sex
10. Tufts University biologists link Huntingtons disease to health benefits in young
11. Medical breakthrough for organ transplants and cardiovascular diseases by Flemish researchers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/26/2016)... -- Research and Markets has announced the ...  report to their offering.  , ,     (Logo: ... forecast the global multimodal biometrics market to grow ... 2016-2020.  Multimodal biometrics is being implemented ... healthcare, BFSI, transportation, automotive, and government for controlling ...
(Date:4/15/2016)... -- A new partnership announced today will help life ... a fraction of the time it takes today, ... insurance policies to consumers without requiring inconvenient and ... rapid testing (A1C, Cotinine and HIV) and higi,s ... pulse, BMI, and activity data) available at local ...
(Date:4/14/2016)... , April 14, 2016 ... Malware Detection, today announced the appointment of Eyal ... new role. Goldwerger,s leadership appointment comes at ... heels of the deployment of its platform at several ... biometric technology, which discerns unique cognitive and physiological factors, ...
Breaking Biology News(10 mins):
(Date:5/4/2016)... ... May 05, 2016 , ... ... to support the National Stroke Association during National Stroke Awareness Month in May. ... and Twitter pages throughout the month. CereScan will donate $1 up to ...
(Date:5/4/2016)... CA (PRWEB) , ... May 04, 2016 , ... ... excited to announce a strategic partnership with McGill University . The partnership is ... to the market in order to help patients in pain. With the new agreement, ...
(Date:5/4/2016)... , ... May 04, 2016 , ... The Children’s Tumor ... disorder that causes tumors to grow on nerves throughout the body. It affects 1 ... Through numerous community events held during the month of May, as well as online ...
(Date:5/4/2016)... ... 2016 , ... PBI-Gordon Corporation is pleased to announce Doug Obermann has been ... career at PBI-Gordon in February 1988, after finishing his masters in agronomy from Iowa ... customer service to national product manager, to helping develop, name and launch many of ...
Breaking Biology Technology: