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Chemist Direct reports continued benefits of stem cell research for potential tissue regeneration

Posted: January 3, 2014 at 10:40 pm

London (PRWEB UK) 3 January 2014

Research on how to harness the potential use of stem cells for common conditions is a worldwide subject of scientific discovery spanning over 3 decades. Incredible results in laboratory experiments have been recorded in 2013 for areas such as tissue regeneration for coronary disease, diabetes, cancer, Parkinsons and Alzheimers disease. All stem cells, whether gathered from an early embryo, a foetus or an adult, have two key properties.

Stem cells have the ability to replicate themselves as needed and can generate any specialised cells that make up the tissues and organs of the body with proper direction. This opens up an exciting potential for the generation of therapies for repair and replacement of damaged and diseased tissues and organs, as models for the testing of new drugs and helping us to understand at a cellular level what goes wrong in many conditions. 1

Stem cells derived from bone marrow or fat has been found to improve recovery from stroke in experiments using rats. This study was published in BioMed Central's open access journal Stem Cell Research & Therapy early last year. Treatment with stem cells improved the amount of brain and nerve repair and the ability of the animals to complete behavioural tasks. Using stem cell therapy holds promise for patients but there are still many questions which need to be answered, regarding treatment protocols and which cell types to use. 2

Other areas in which stem cell transplants are already being successfully used in the clinic trials are for treatment for spinal lesions and the regeneration of epidermal surfaces and in leukaemia, where stem cells are replaced during stem cell-containing bone marrow transplants. 3 These treatments demonstrate the potential of stem cells and intensive research is being performed all over the world to improve our understanding of stem cells and how these can be used therapeutically for PD.

Recently published research by a team of scientists in Wales has shown early signs of being able to regenerate damaged heart tissue. By experimenting at Cardiff and Swansea university laboratories, a team of scientists working in the private sector hopes to develop new treatments for heart failure over the next five years.

In a statement for the research team Ajan Reginald said, "We've identified what we think is a very potent type of stem cell which is heart specific. The interim analysis looks very positive and very fortunately the study does show some signs of early regeneration. What the therapy does is reproduce more cells in large numbers to regenerate the part of the heart that is damaged. The first stage of clinical trial is now completed which was focused on safety. 4

Further research during the next five years will produce more alternative solutions to diseases which currently have treatment but no permanent cures for. 5

References

1.http://www.hta.gov.uk/_db/_documents/stem_cell_pack_200806170144.pdf 2.http://www.parkinsonsnsw.org.au/assets/attachments/research/Stem-Cells.pdf 3.http://stemcellres.com/content/4/1/11 4.http://www.bbc.co.uk/news/uk-wales-25560547 5.http://www.cell.com/stem-cell-reports/abstract/S2213-6711(13)00126-4#Summary

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NeuroSurgeon Jim Baumgartner explains potential for Cord blood stem cells – January 2011 – – Video

Posted: January 3, 2014 at 5:40 pm


NeuroSurgeon Jim Baumgartner explains potential for Cord blood stem cells - January 2011 -
Listen in as leading pediatric neurosurgeon Dr. Baumgartner discusses the future potential of regenerative medicine. Cord blood stem cells are being used tod...

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NeuroSurgeon Jim Baumgartner explains potential for Cord blood stem cells - January 2011 - - Video

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Biologists discover solution to problem limiting development of human stem cell therapies

Posted: January 2, 2014 at 2:44 pm

PUBLIC RELEASE DATE:

2-Jan-2014

Contact: Kim McDonald kmcdonald@ucsd.edu 858-534-7572 University of California - San Diego

Biologists at UC San Diego have discovered an effective strategy that could prevent the human immune system from rejecting the grafts derived from human embryonic stem cells, a major problem now limiting the development of human stem cell therapies. Their discovery may also provide scientists with a better understanding of how tumors evade the human immune system when they spread throughout the body.

The achievement, published in a paper in this week's early online edition of the journal Cell Stem Cell by a collaboration that included scientists from China, was enabled by the development of "humanized" laboratory mice that contained a functional human immune system capable of mounting a vigorous immune rejection of foreign cells derived from human embryonic stem cells.

Because human embryonic stem cells are different from our own body's cells, or "allogenic," a normally functioning human immune system will attack these foreign cells. One way to reduce the body's "allogenic immune response" is to suppress the immune system with immunosuppressant drugs.

"For organ transplantation to save patients with terminal diseases that has been quite successful," says Yang Xu, a professor of biology who headed the team of researchers that included Ananda Goldrath, an associate biology professor at UC San Diego. "But for stem cell therapies, the long term use of toxic immunosuppressant drugs for patients who are being treated for chronic diseases like Parkinson's disease or diabetes pose serious health problems."

Researchers had long been searching for a human immunity relevant model that would allow them to develop strategies to implant allogenic cells derived from embryonic stem cells safely. "The problem is that we only had data from mouse immune system and those are not usually translatable in humans, because human and mouse immune systems are quite different," explains Xu. "So what we decided to do was to optimize the humanized mouse that carries a functional human immune system."

To do that, the biologists took immune deficient laboratory mice and grafted into their bodies human fetal thymus tissues and hematopoietic stem cells derived from fetal liver of the same human donor. "That reconstituted in these mice a normally functioning human immune system that effectively rejects cells derived human embryonic stem cells," says Xu. With these "humanized" mouse models, the biologists then tested a variety of immune suppressing molecules alone or in combination and discovered one combination that worked perfectly to protect cells derived from human embryonic stem cells from immune rejection.

That combination was CTLA4-lg, an FDA-approved drug for treating rheumatoid arthritis that suppresses T-cells responsible for immune rejection, and a protein called PD-L1 known to be important for inducing immune tolerance in tumors. The researchers discovered that the combination of these two molecules allowed the allogeneic cells to survive in humanized mice without triggering an immune rejection.

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Study finds patients give 'broad endorsement' to stem cell research

Posted: January 2, 2014 at 2:41 pm

PUBLIC RELEASE DATE:

2-Jan-2014

Contact: Leah Ramsay lramsay@jhu.edu 202-642-9640 Johns Hopkins Medicine

In an early indication of lay opinions on research with induced pluripotent stem cells (iPSCs), which are stem cells made from skin or other tissues, a new study by bioethicists at Johns Hopkins University indicates that despite some ethical concerns, patients give the research "broad endorsement".

During focus group discussions patients were largely in favor of participating in iPSC research even if personal benefit was unlikely, though they raised concerns about consent, privacy and transparency when considering donating tissue for this research. The bioethicists report their findings in the journal Cell Stem Cell.

"Bioethicists, as well as stem cell researchers and policy-makers, have discussed the ethical issues of induced pluripotent stem cells at length, but we didn't have any systematic information about what patients think about these issues, and that is a huge part of the equation if the potential of this research is to be fully realized," says Jeremy Sugarman, the senior author of the report and the Harvey M. Meyerhoff Professor of Bioethics and Medicine at the Johns Hopkins Berman Institute of Bioethics.

Unlike human embryonic stem cells, iPSCs are derived without destroying a human embryo. Research with human iPSCs is valuable for developing new drugs, studying disease, and perhaps developing medical treatments. Sugarman explains that, while far off, scientists are hopeful that iPSCs could someday be used to develop organs for transplantation that the body's immune system will not attack, because they can be created from the person's own cells.

The study reveals the importance of prior informed consent for those asked to participate in it. According to the report, consent was highly important for patients in all five of the focus groups that were convened. Some patients even suggested that proper informed consent could compensate for other concerns they had about privacy, the "immortalization" of cells, and the commercialization of stem cells.

There was a "strong desire among participants to have full disclosure of the anticipated uses," the report notes, with some participants wanting to be able to veto certain uses of their cells. The authors acknowledge the "practical difficulties" of this request but hope that their findings will "prompt investigation into creative approaches to meeting these desires."

The study also revealed another side to some patients' selfless motivations to participate in research as they might relate to eventual commercialization. The report quotes one participant as saying, "It won't be just taken to become a money maker and the very people who need it the most will no longer be able to benefit from it" and another, "it was a donation. It's a humanitarian effort."

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Regenocyte Adult Stem Cell Therapy – Barbara McKean – Video

Posted: January 2, 2014 at 2:41 pm


Regenocyte Adult Stem Cell Therapy - Barbara McKean

By: RegenocyteStemCells

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Regenocyte Adult Stem Cell Therapy -Howard Lindeman – Video

Posted: January 2, 2014 at 2:41 pm


Regenocyte Adult Stem Cell Therapy -Howard Lindeman

By: RegenocyteStemCells

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Regenocyte Adult Stem Cell Therapy -Howard Lindeman - Video

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Stem cell therapy breakthrough

Posted: January 2, 2014 at 2:41 pm

Human embryonic stem cells have the capacity to differentiate into a variety of cell types, making them a valuable source of transplantable tissue for the treatment of numerous diseases, such as Parkinson's disease and diabetes.

But theres one major issue: Embryonic stem cells are often rejected by the human immune system.

Now, researchers from the University of California San Diego may have found an effective way to prevent this rejection in humans. Utilizing a novel humanized mouse model, the scientists have revealed a unique combination of immune suppressing molecules that stop the immune system from attacking the injected stem cells without shutting the system down completely.

This discovery could ultimately help resolve some of the major problems currently limiting the use of embryonic stem cells for certain conditions, paving the way for the development of more effective human stem cell therapies.

This is a generic way of immune suppression, so it could potentially be applied not just for stem cells therapies, but for organ transplants as well, Yang Xu, a professor of biology at UC San Diego and lead author of the study, told FoxNews.com. It can be very broad.

Embryonic stem cells are different from the other cells in a patients body, making them allogenic. This means the immune system will recognize them as foreign agents and attack them.

One way of overcoming this rejection problem is to give patients immunosuppressant drugs, which suppress the entire immune system. While short term use of immunosuppressants has been successful for many organ transplants, embryonic stem cell therapies for chronic diseases require long term use of these drugs which can often be very toxic and increase the risk of cancer.

In order for the patient to really use this therapy, they have to decide: Do they want a lifelong use of immunosuppressant drugs, or are they willing to live with the symptoms of their disease, Xu said.

To figure out a way of bypassing this issue, researchers needed a relevant model that could closely mimic the human immune systems response to embryonic stem cell transplantation. To do this, they took immune deficient lab mice and grafted them with human fetal thymus tissues and hematopoietic stem cells derived from the fetal liver.

Essentially, this created a highly specialized mouse model with very robust T cells capable of effectively rejecting foreign embryonic stem cells just like human T cells.

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Stem cell therapy breakthrough

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FEMA Search and Rescue Canine Receives Stem Cell Therapy So He Can Continue to Save Lives

Posted: January 2, 2014 at 2:41 pm

Poway, CA (PRWEB) January 02, 2014

Phizer is a seven year old black lab belonging to Ohio Task Force 1 that recently had stem cell therapy by Vet-Stem, Inc. Phizer was brought to Cleveland Road Animal Hospital for a limp in his right hind. Dr. Chad Bailey recommended stem cell therapy. Both Vet-Stem and Cleveland Road Animal Hospital value the working dog and offered their services pro-bono in hopes that Phizers stem cell therapy would permit him to continue to provide search and rescue service.

Phizer is one of only five search and rescue canines owned by Ohio Task Force 1, one of 28 Task Forces across the US that make up the FEMA Urban Search and Rescue System. Phizer is trained to find living victims who may be trapped under collapsed buildings. He is unique because he is certified to work with more than one handler meaning that he can be used on more missions. If one of his handlers is not available the other may be. Phizer is trained to cover obstacles and treacherous terrain, climb metal ladders and investigate acres of terrain quickly and efficiently. These skills came in handy when Phizer was assigned to a mission recovering victims from hurricane Sandy.

Handlers Maureen May and Deana Hudgins noticed an intermittent limp in Phizers right rear leg when he first started moving, but got better with exercise. Although the limp was not preventing Phizer from his job, he was started on pain medicine, joint supplements and taken for exams to the local veterinarian. His radiology report showed signs consistent with mild degenerative joint disease in addition to another injury. Deana and Dr. Bailey started Phizer on injectable treatments, laser therapy, and discussed stem cells.

Since Phizers stem cell therapy used his own stem cells, a small portion of fat was collected and sent to Vet-Stems lab in California. Within 48 hrs the doses of stem cells were ready for injection by Dr. Bailey. Stem cells are regenerative cells that can differentiate into many tissue types and reduce pain and inflammation thus helping to restore range of motion and regenerate tendon, ligament and joint tissues (http://www.vet-stem.com/science). For Phizer this means that all of the issues identified in his exams may be helped with one therapy.

About Vet-Stem, Inc. Vet-Stem, Inc. was formed in 2002 to bring regenerative medicine to the veterinary profession. The privately held company is working to develop therapies in veterinary medicine that apply regenerative technologies while utilizing the natural healing properties inherent in all animals. As the first company in the United States to provide an adipose-derived stem cell service to veterinarians for their patients, Vet-Stem, Inc. pioneered the use of regenerative stem cells in veterinary medicine. The company holds exclusive licenses to over 50 patents including world-wide veterinary rights for use of adipose derived stem cells. In the last decade over 10,000 animals have been treated using Vet-Stem, Inc.s services, and Vet-Stem is actively investigating stem cell therapy for immune-mediated and inflammatory disease, as well as organ disease and failure. For more on Vet-Stem, Inc. and Veterinary Regenerative Medicine visit http://www.vet-stem.com or call 858-748-2004.

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FEMA Search and Rescue Canine Receives Stem Cell Therapy So He Can Continue to Save Lives

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First FDA Approved Study of Stem Cells to Treat Hearing Loss Begins – 2012 – – Video

Posted: January 2, 2014 at 7:51 am


First FDA Approved Study of Stem Cells to Treat Hearing Loss Begins - 2012 -
HOUSTON, January 12, 2012 /PRNewswire/ Children #39;s Memorial Hermann Hospital and Cord Blood Registry (CBR) are launching the first FDA-approved, Phase I sa...

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Spotlight on Amyloidosis and Stem Cell Research: Robert Vescio MD – Cedars-Sinai – Video

Posted: January 1, 2014 at 12:41 pm


Spotlight on Amyloidosis and Stem Cell Research: Robert Vescio MD - Cedars-Sinai
Dr. Robert Vescio spoke to governing board of California #39;s Stem Cell Agency to promote awareness about amyloidosis, a rare, often fatal disease caused by the...

By: California Institute for Regenerative Medicine

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Spotlight on Amyloidosis and Stem Cell Research: Robert Vescio MD - Cedars-Sinai - Video

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