Phoenix, Arizona (PRWEB) December 16, 2013

The top Phoenix stem cell treatment clinic, Arizona Pain Stem Cell Institute, is now offering stem cell therapy for plantar fasciitis. The treatments are offered by Board Certified pain management doctors in Arizona, and often help patients avoid surgery. For more information and scheduling, call (602) 507-6550.

Plantar fasciitis affects millions of Americans, causing heel pain that may make it difficult to participate in recreational activities and walking in general. Conventional treatments such as steroid injections, NSAIDS, bracing and physical therapy at times do not relieve the pain properly. Surgery for plantar fasciitis unfortunately does not always provide the desired relief.

Regenerative medicine at the Arizona Pain Stem Cell Institute offers a nonoperative option for plantar fasciitis. This may include stem cell injections with bone marrow, fat derived or amniotic derived material. The procedure is outpatient and low risk.

In addition to treatments for plantar fasciitis, the Institute offers stem cell treatments for degenerative arthritis, tennis elbow, rotator cuff symptoms, achilles tendonitis and more. The procedures are performed by Board Certified pain doctors, with four research projects ongoing.

The Institute is a division of Arizona Pain Specialists, the leading pain center in Arizona. Five locations accept over 50 insurance plans including Workers Compensation, Personal Injury, PPO's, some HMO's and self pay. The regenerative medicine treatments are offered as fee for service.

For more information and scheduling to discuss plantar fasciitis options, call (602) 507-6550.

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Arizona Pain Stem Cell Institute Now Offering Stem Cell Therapy for Plantar Fasciitis

London, Dec.12 : Scientists at King's College London have, for the first time, identified the unique properties of two different types of cells, known as fibroblasts, in the skin - one required for hair growth and the other responsible for repairing skin wounds.

The research could pave the way for treatments aimed at repairing injured skin and reducing the impact of ageing on skin function.

Fibroblasts are a type of cell found in the connective tissue of the body's organs, where they produce proteins such as collagen. It is widely believed that all fibroblasts are the same cell type.

However, a study on mice by researchers at King's, published today in Nature, indicates that there are at least two distinct types of fibroblasts in the skin: those in the upper layer of connective tissue, which are required for the formation of hair follicles and those in the lower layer, which are responsible for making most of the skin's collagen fibres and for the initial wave of repair of damaged skin.

The study found that the quantity of these fibroblasts can be increased by signals from the overlying epidermis and that an increase in fibroblasts in the upper layer of the skin results in hair follicles forming during wound healing. This could potentially lead to treatments aimed at reducing scarring.

Professor Fiona Watt, lead author and Director of the Centre for Stem Cells and Regenerative Medicine at King's College London, said: 'Changes to the thickness and compostion of the skin as we age mean that older skin is more prone to injury and takes longer to heal. It is possible that this reflects a loss of upper dermal fibroblasts and therefore it may be possible to restore the skin's elasticity by finding ways to stimulate those cells to grow. Such an approach might also stimulate hair growth and reduce scarring.'

'Although an early study, our research sheds further light on the complex architecture of the skin and the mechanisms triggered in response to skin wounds. The potential to enhance the skin's response to injury and ageing is hugely exciting. However, clinical trials are required to examine the effectiveness of injecting different types of fibroblasts into the skin of humans.'

Dr Paul Colville-Nash, Programme Manager for Regenerative Medicine at the MRC, said: 'These findings are an important step in our understanding of how the skin repairs itself following injury and how that process becomes less efficient as we age. The insights gleaned from this work will have wide-reaching implications in the area of tissue regeneration and have the potential to transform the lives patients who have suffered major burns and trauma.'

This research was funded by the Wellcome Trust, the Medical Research Council and both Guy's and St Thomas' Charity and the National Institute for Health Research (NIHR) Biomedical Research Centre at Guy's and St Thomas' NHS Foundation Trust and King's College London.

--ANI (Posted on 13-12-2013)

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Skin's own cells offer hope for new ways to repair wounds, reduce impact of ageing

Poway, California (PRWEB) December 13, 2013

Noni is a ten-year-old released Canine Companion for Independence dog who just achieved her Master Agility Champion status after the pain from arthritis tried to slow her down. Nonis owner, Dr. Kim Dembinski, a veterinarian at Paradise Veterinary Hospital in San Diego turned to stem cell therapy by Vet-Stem, Inc. and fellow colleague Dr. Jennipher Harris to help Noni.

When Dr. Dembinski noticed weakness and discomfort in her aging agility dog she was proactive in keeping Noni happy and comfortable, The main thought was that she gives so much between therapy work, being my best friend, and as the clinic mascot that giving her relief from pain and her being more comfortable was the least I could do for her.

Nonis stem cell therapy involved a small fat sample collection, which was brought to Vet-Stems lab in Poway, California. There, highly trained lab technicians processed Nonis fat tissue to isolate the stem cells into doses that could be injected into the arthritic joints that were causing her pain. Normally the tissue is shipped overnight to Vet-Stem and the cells are shipped overnight back to the veterinarian making doses available within 48 hours, but because Paradise Veterinary Hospital is located near Vet-Stem Nonis stem cell doses were available for injection the same day the fat sample was collected.

Noni did very well post procedure; she regained muscle strength and flexibility, Dr. Dembinski reported, Noni did four weeks of rehab then went right back to competing in agility. Six months after the procedure she earned her MACH (Master Agility Champion), AKC (American Kennel Club) title. Because of her stem cell therapy she is still comfortable and playing agility!

Dr. Dembinski is a general practitioner for pets including dogs, cats, small mammals, birds and exotics. She is currently owner and primary veterinarian at Paradise Veterinary Hospital and sits on the board of the San Diego County Veterinary Medical Association. Caring for animals is not just a job for Dr. Dembinski, it is a passion. In her free time she and Noni compete in dog agility trials with AKC, North American Dog Agility Council and Canine Performance Events.

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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San Diego Canine Overcomes Pain to Achieve Championship with the Help of Paradise Veterinary Hospital and Vet-Stem, Inc.

FREEPORT, The Bahamas (PRWEB) December 06, 2013

December 6, 2013 Matt Feshbach, CEO of Okyanos Heart Institute whose mission it is to bring a new standard of care and better quality of life to patients with coronary artery disease using cardiac stem cell therapy, acknowledges the Japanese legislature for its recent approval of a bill aimed at the treatment of certain chronic diseases using regenerative medicine strategies.

The legislation was passed in Japan on November 20th, 2013. The new regenerative medicine law emphasizes the importance of establishing patient safety in the use of adult stem cell therapies prior to being offered commercially. It also serves to support innovation in stem cell and regenerative medicine therapies by providing a framework by which such technologies may be granted new, limited approval paths for some biologics.

Japan has taken a leadership position globally for its passage of enlightened legislation for stem cell therapy, said Feshbach, who recognizes this development as an important milestone in its potential to benefit patients and the field of healthcare.

We applaud Japan as well as other countries including but not limited to Australia, Singapore, and New Zealand for approving stem cell processing devices and/or biologics (such as stem cells) for use in clinics today, he added. This legislation in Japan says that if a stem cell therapy protocol can demonstrate a strong safety profile, physicians have the option to offer it to patients, generally when other standard-of-care interventions have not proven effective and the patients have no other options available to them. Patients will have the choice to use their own stem cells to treat the condition. By tracking the progress of the patients over time, efficacy can be determined and the treatment may become another standard-of-care treatment option available to patients.

While this research is important over the long term, adult stem cell therapy is unique in that it takes advantage of the natural mechanisms of a persons own stem cells to repair the cells, tissues or organs damaged by disease or injury, stated Feshbach. The dawn of a new phase in the evolution of medicine has begun.

Additional countries such as The Bahamas, Panama, Argentina and Jordan have established regulations and legislation designed to both protect patient safety and give access to treatments which have the potential to help unmet needs such as heart failure and other diseases.

Japan represents the second-largest medical market in the world and remains a global leader in both adult stem cell and gene therapy trials. Dr. Shinya Yamanaka, professor and director for the Center for iPS Cell Research and Application (CiRA) at Kyoto University, was awarded a Nobel Prize in 2012 for the discovery of induced pluripotent stem cells (iPS). Click here to read more about the Japanese legislatures recent stem cell measures.

About Okyanos Heart Institute: (Oh key AH nos) Based in Freeport, The Bahamas, Okyanos Heart Institutes mission is to bring a new standard of care and a better quality of life to patients with coronary artery disease using cardiac stem cell therapy. Okyanos adheres to U.S. surgical center standards and is led by Chief Medical Officer Howard T. Walpole Jr., M.D., M.B.A., F.A.C.C., F.S.C.A.I. Okyanos Treatment utilizes a unique blend of stem and regenerative cells derived from ones own adipose (fat) tissue. The cells, when placed into the heart via a minimally-invasive catheterization, stimulate the growth of new blood vessels, a process known as angiogenesis. The treatment facilitates blood flow in the heart and supports intake and use of oxygen (as demonstrated in rigorous clinical trials such as the PRECISE trial). The literary name Okyanos (Oceanos) symbolizes flow. For more information, go to http://www.okyanos.com

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Okyanos Heart Institute CEO Matt Feshbach Congratulates Japan’s Legislators On Stem Cell Bill And Global Regulatory ...

Californias government-run stem-cell research agency, on course to spend $3 billion in taxpayer money to find treatments for some of the worlds most intractable diseases, is pushing to accelerate human testing before its financing runs out.

For the California Institute for Regenerative Medicine, time is growing short to fund research that demonstrates the potential of stem cells to help treat everything from cancer to heart disease to spinal cord injuries.

The agency, created by voters in 2004, has given out more than half of its $3 billion from state bonds and must spend the rest by 2017. The largest U.S. funding source for stem-cell research outside the federal government, its under pressure to show results to attract new money from pharmaceutical companies, venture capitalists or even more municipal bonds.

We need to figure out how to keep them going, said Jonathan Thomas, a founding partner of Saybrook Capital LLC in Los Angeles, and chairman of the institutes board, which meets today. We could do public-private partnerships, venture philanthropy, a ballot box.

Embryonic stem cells have the potential to change into any type of cell in the body. They are among the first cells created in embryos after conception. Scientists hope they may replace damaged or missing tissue in the brain, heart and immune system.

California voters approved the bonds after President George W. Bush banned the use of federal funds for research on embryonic stem cells. Since then, other types of stem cells have been shown to act like embryonic cells, relieving some of the debate over the ethics of destroying human embryos to use the cells.

The agencys funding decisions have included a grant of $20 million to a team led by Irv Weissman at the Stanford University School of Medicine, seeking a cure for cancer.

Weissmans team is working on an antibody manufactured with stem cells that allows a cancer patients own immune system to destroy a tumor, instead of relying on toxic radiation or chemotherapy. The antibody counteracts a protein called CD47, which creates what scientists call a dont eat me shield around the cancer. Once that cloak is removed, the patients immune system recognizes the cancer and attacks the tumor, shrinking or eliminating it.

Tests on humans are to begin early next year. The antibody has already worked in mice against breast, colon, ovarian, prostate, brain, bladder and liver cancer.

Two other research projects funded by the California agency are in human trials now -- one targeting HIV, the virus that causes AIDS, and another that regrows cardiac tissue in heart-attack victims.

Excerpt from:
California’s Stem-Cell Quest Races Time as Money Dwindles

Bone marrow is the tissue comprising the center of large bones.

It is the place where new blood cells are produced.

Bone marrow contains two types of stem cells: hemopoietic (which can produce blood cells) and stromal (which can produce fat, cartilage and bone).

There are two types of bone marrow: red marrow (also known as myeloid tissue) and yellow marrow.

Red blood cells, platelets and most white blood cells arise in red marrow; some white blood cells develop in yellow marrow.

The color of yellow marrow is due to the much higher number of fat cells.

Both types of bone marrow contain numerous blood vessels and capillaries. At birth, all bone marrow is red.

With age, more and more of it is converted to the yellow type.

Adults have on average about 2.6kg (5.7lbs) of bone marrow, with about half of it being red.

Red marrow is found mainly in the flat bones such as hip bone, breast bone, skull, ribs, vertebrae and shoulder blades, and in the cancellous ("spongy") material at the proximal ends of the long bones femur and humerus.

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Bone marrow - Science Daily

Introduction

The announcement of the ability to produce embryonic cell-like lines from ordinary skin cells has the news media scrambling to get feedback about the possible efficacy of such lines in stem cell therapies. Many politicians have landed on one side or the other, with liberals saying that embryonic stem cell research is still necessary1 and conservatives claiming that all embryonic research should be halted. The marketplace of science will eventually weigh-in on which method(s) are used in real therapies.

Embryonic stem cell (ESC) research has been a hot topic, with conservatives saying that such research is morally unacceptable and liberals saying that conservatives value a clump of cells more than people who have serious disabling diseases. Several groups of medical researchers (including James Thomson, the first person to culture ESC) recently showed that normal skin cells can be reprogrammed to an embryonic state, producing what are now called induced pluripotent stem (iPS) cells. Originally performed in mice in June, 2007,2 researchers took four genes OCT3/4, SOX2, KLF4, and c-MYC and incorporated those genes into the nucleus of cells to induce pluripotency. Such lines could be expanded indefinitely and could differentiate to form numerous kinds of different tissues.

Just five months after the mouse study was published, the feat was repeated by three separate laboratories using human skin cells.3 One research group used the same genes as those used in the mouse study, whereas a second group used OCT3, SOX2, NANOG and LIN28. The techniques were efficient enough to generate one cell line for every 5-10 thousand cells treated. Although not extremely efficient, it is quite usable, since it is possible to obtain hundreds of thousands to millions of cells to carry out these kinds of studies. The technique was recently replicated for adult human skin cells,4 instead of skin cell lines, demonstrating that it could be used to generate patient-specific cell lines.

Studies using iPS cell lines have shown that those cells undergo similar changes compared to what is observed with embryonic stem cells. Cell populations grew at the same rate, telomerase (which preserves the ends of chromosomes) was present in both iPS and ESC. Severalgenes that are silenced in fibroblasts, but active in ESC, were also active in the iPS cells. The iPS cell lines could be differentiated into heart muscle and neuronal cells, in addition to basic cell types (ectoderm, mesoderm, and endoderm). Gene expression assays showed that 5,000 genes from iPS cells showed a five-fold difference in expression compared to those in fibroblasts, although 1,267 genes had a five-fold difference in expression between ESC and iPS cells. According to the James Thomson study, "The human iPS cells described here meet the defining criteria we originally proposed for human ES cells (14), with the significant exception that the iPS cells are not derived from embryos."3

Originally, the new technique is not without its own set of problems, although within two years, virtually all had been resolved. One of the original genes used for reprogramming (c-MYC) has been shown to produce tumors and cancers. Obviously, it would not be a good choice for patient therapy. However, this gene was eliminated in some of the later techniques.5 The second problem was that the genes were originally introduced through the use of a retrovirus that incorporates into the host cell DNA. Depending upon where the gene sequence inserts, it may cause trouble (including mutations and cancers). Those who watched the I am Legend movie will remember that a retrovirus-derived cancer treatment was responsible for turning the surviving members of the human race into an army of grotesque monsters. Although such a transformation is not possible, the initiation of cancer in even a small number of treated patients would make such treatments unusable for human therapy. Two years later the problem of using a retroviral system for reprogramming was solved by switching to a simple lentivirus reprogramming system.6 Within weeks, other researchers went a step further, eliminating viral reprogramming altogether by using reprogramming genes (OCT4, SOX2, NANOG, LIN28, c-Myc, and KLF4) cloned into a circular piece of DNA called a plasmid.7 Subsequent culture of of the iPS over a period of weeks resulted in the complete loss of the plasmid, but with continued pluripotency. The potential of iPS cells is so great that the researcher who first grew ESC in culture is now one of the leading proponents of iPS stem cell research.

A more recent, but somewhat uncertain potential problem has been identified more recently. Since iPS cells are derived from adult tissues, they tend to harbor some of the same epigenetic profiles as those adult tissues from which they are derived. As cells age or differentiate, certain genes are turned on or off through methylation of those gene's promoters. The process prevents those cells from undergoing additional changes that might cause the cells to lose their differentiated properties. When adults cells are induced to pluripotency, some of those epigenetic profiles are retained in the iPS cells.8 How will these vestiges of adult cells affect iPS ability to differentiate into cells that are useful for disease models or therapy? At this point, we don't know for sure. However, my guess is that different ESC lines will exhibit different epigenetic profiles, as will specific isolates of iPS cells. Although researchers have found no problems in producing differentiated iPS lines, some of these epigenetic changes might interfere with the ultimate function of these cells as differentiated cell lines.

Even with these issues, research institutes are beginning to focus their stem cell research on iPS cells. Cedars-Sinai Medical Center recently opened its Induced Pluripotent Stem Cell Core Production Facility in late 2011, according to their press release.9

Induction of pluripotency to produce embryonic-like stem cells is the hot topic in stem cell research. The fact that human iPS cells have been produced in many different laboratories after the initial animal studies shows that the technique is robust and easily reproducible. In contrast, the competing technique, human somatic cell nuclear transfer (cloning), has never been transferred from animal studies to human application, despite years of attempts. At this point, it seems pretty certain that the iPS technique will soon replace ESC as the preferred means of generating human stem cell lines. However, the disadvantage of iPS cells is that the cell lines produced would be patient specific (only useful for the intended patient), whereas the establishment of ESC lines allows biotech companies to patent the lines in order to make lots of money.

http://www.godandscience.org/doctrine/reprogrammed_stem_cells.html Last Modified October 6, 2011

Link:
Induced Pluripotent Stem Cells (iPS) from Human Skin: Probable ...

Dr. Raj on Late Night Health on Stem Cell Therapy
Dr. Raj, full name Dr. Bal Rajogopalan, was a guest on Late Night Health on the Radiio with host Mark Alyn, to discuss the remarkable stem cell therapy techn...

By: AHPRvideo

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Dr. Raj on Late Night Health on Stem Cell Therapy - Video

With more than 50 years of experience studying blood-forming stem cells called hematopoietic stem cells, scientists have developed sufficient understanding to actually use them as a therapy. Currently, no other type of stem cell, adult, fetal or embryonic, has attained such status. Hematopoietic stem cell transplants are now routinely used to treat patients with cancers and other disorders of the blood and immune systems. Recently, researchers have observed in animal studies that hematopoietic stem cells appear to be able to form other kinds of cells, such as muscle, blood vessels, and bone. If this can be applied to human cells, it may eventually be possible to use hematopoietic stem cells to replace a wider array of cells and tissues than once thought.

Despite the vast experience with hematopoietic stem cells, scientists face major roadblocks in expanding their use beyond the replacement of blood and immune cells. First, hematopoietic stem cells are unable to proliferate (replicate themselves) and differentiate (become specialized to other cell types) in vitro (in the test tube or culture dish). Second, scientists do not yet have an accurate method to distinguish stem cells from other cells recovered from the blood or bone marrow. Until scientists overcome these technical barriers, they believe it is unlikely that hematopoietic stem cells will be applied as cell replacement therapy in diseases such as diabetes, Parkinson's Disease, spinal cord injury, and many others.

Blood cells are responsible for constant maintenance and immune protection of every cell type of the body. This relentless and brutal work requires that blood cells, along with skin cells, have the greatest powers of self-renewal of any adult tissue.

The stem cells that form blood and immune cells are known as hematopoietic stem cells (HSCs). They are ultimately responsible for the constant renewal of bloodthe production of billions of new blood cells each day. Physicians and basic researchers have known and capitalized on this fact for more than 50 years in treating many diseases. The first evidence and definition of blood-forming stem cells came from studies of people exposed to lethal doses of radiation in 1945.

Basic research soon followed. After duplicating radiation sickness in mice, scientists found they could rescue the mice from death with bone marrow transplants from healthy donor animals. In the early 1960s, Till and McCulloch began analyzing the bone marrow to find out which components were responsible for regenerating blood [56]. They defined what remain the two hallmarks of an HSC: it can renew itself and it can produce cells that give rise to all the different types of blood cells (see Chapter 4. The Adult Stem Cell).

A hematopoietic stem cell is a cell isolated from the blood or bone marrow that can renew itself, can differentiate to a variety of specialized cells, can mobilize out of the bone marrow into circulating blood, and can undergo programmed cell death, called apoptosisa process by which cells that are detrimental or unneeded self-destruct.

A major thrust of basic HSC research since the 1960s has been identifying and characterizing these stem cells. Because HSCs look and behave in culture like ordinary white blood cells, this has been a difficult challenge and this makes them difficult to identify by morphology (size and shape). Even today, scientists must rely on cell surface proteins, which serve, only roughly, as markers of white blood cells.

Identifying and characterizing properties of HSCs began with studies in mice, which laid the groundwork for human studies. The challenge is formidable as about 1 in every 10,000 to 15,000 bone marrow cells is thought to be a stem cell. In the blood stream the proportion falls to 1 in 100,000 blood cells. To this end, scientists began to develop tests for proving the self-renewal and the plasticity of HSCs.

The "gold standard" for proving that a cell derived from mouse bone marrow is indeed an HSC is still based on the same proof described above and used in mice many years ago. That is, the cells are injected into a mouse that has received a dose of irradiation sufficient to kill its own blood-producing cells. If the mouse recovers and all types of blood cells reappear (bearing a genetic marker from the donor animal), the transplanted cells are deemed to have included stem cells.

These studies have revealed that there appear to be two kinds of HSCs. If bone marrow cells from the transplanted mouse can, in turn, be transplanted to another lethally irradiated mouse and restore its hematopoietic system over some months, they are considered to be long-term stem cells that are capable of self-renewal. Other cells from bone marrow can immediately regenerate all the different types of blood cells, but under normal circumstances cannot renew themselves over the long term, and these are referred to as short-term progenitor or precursor cells. Progenitor or precursor cells are relatively immature cells that are precursors to a fully differentiated cell of the same tissue type. They are capable of proliferating, but they have a limited capacity to differentiate into more than one cell type as HSCs do. For example, a blood progenitor cell may only be able to make a red blood cell (see Figure 5.1. Hematopoietic and Stromal Stem Cell Differentiation).

Continued here:
5. Hematopoietic Stem Cells - NIH Stem Cell Information Home Page

African scientists in Nairobi to explore stem cell therapy
African Scientists are converging in Nairobi to explore ways of using regenerative medicine or stem cell therapy, to help prevent the increasing cases of non...

By: Kbc Kenya

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African scientists in Nairobi to explore stem cell therapy - Video

Marty Greenfield with UCLA doctors

Marty Greenfield lives with crushing pain every day due to angina, a condition that is caused by an inadequate supply of blood to the heart. He has suffered a heart attack, and a coronary bypass procedure and angioplasty have provided little relief. His doctor referred him to UCLA to be considered for a heart transplant.

Dr. Jonathan Tobis, a UCLA clinical professor of cardiology, performed an angiogram and angioplasty on Greenfield, 64, but found that the patient was not a candidate for a heart transplant because his heart muscle function was still good.

Instead, Tobis suggested that Greenfield consider participating in a Phase 3 clinical trial that uses a patient's own blood-derived stem cells to try to restore circulation to the heart. The procedure uses the latest technology to map the heart in 3-D and guides the doctor to deliver the stem-cell injections to targeted sites in the heart muscle.

On Oct. 17, Greenfield became the first patient at UCLA to participate in the multicenter clinical trial. He said he jumped at the chance to help, even though the study is double blind, which means that neither the patients nor the researchers know who is receiving stem-cell injections and who is receiving placebos.

"This just isn't about me," said Greenfield, a married father of two sons who lives near Las Vegas. "If I can help move this research forward so that it helps just one person, it will be worth it."

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UCLA doctors test stem-cell therapy to improve blood flow in ...

stem cell therapy treatment for dystonic cerebral palsy by dr alok sharma, mumbai, india
improvement seen in just 3 months after stem cell therapy treatment for dystonic cerebral palsy by dr alok sharma, mumbai, india. Stem Cell Therapy done date...

By: Neurogen Brain and Spine Institute

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stem cell therapy treatment for dystonic cerebral palsy by dr alok sharma, mumbai, india - Video

Regenerative medicine is the process of replacing or regenerating human cells, tissues or organs to restore or establish normal function.[1] This field holds the promise of regenerating damaged tissues and organs in the body by replacing damaged tissue and/or by stimulating the bodys own repair mechanisms to heal previously irreparable tissues or organs.

Regenerative medicine also includes the possibility of growing tissues and organs in the laboratory and safely implant them when the body cannot heal itself This can potentially solves the problem of the shortage of organs available for donation, and the problem of organ transplant rejection if the organs cells are derived from the patients own tissue or cells.[2][3][4]

Widely attributed to having first been coined by William Haseltine (founder of Human Genome Sciences),[5] the term Regenerative Medicine was first found in a 1992 article on hospital administration by Leland Kaiser. Kaisers paper closes with a series of short paragraphs on future technologies that will impact hospitals. One such paragraph had Regenerative Medicine as a bold print title and went on to state, A new branch of medicine will develop that attempts to change the course of chronic disease and in many instances will regenerate tired and failing organ systems.[6][7]

Regenerative medicine refers to a group of biomedical approaches to clinical therapies that may involve the use of stem cells.[8] Examples include the injection of stem cells or progenitor cells (cell therapies); the induction of regeneration by biologically active molecules administered alone or as a secretion by infused cells (immunomodulation therapy); and transplantation of in vitro grown organs and tissues (Tissue engineering).[9][10]

A form of regenerative medicine that recently made it into clinical practice, is the use of heparan sulfate analogues on (chronic) wound healing. Heparan sulfate analogues replace degraded heparan sulfate at the wound site. They assist the damaged tissue to heal itself by repositioning growth factors and cytokines back into the damaged extracellular matrix.[11][12][13] For example, in abdominal wall reconstruction (like inguinal hernia repair), biologic meshes are being used with some success.

At the Wake Forest Institute for Regenerative Medicine, in North Carolina, Dr. Anthony Atala and his colleagues have successfully extracted muscle and bladder cells from several patients bodies, cultivated these cells in petri dishes, and then layered the cells in three-dimensional molds that resembled the shapes of the bladders. Within weeks, the cells in the molds began functioning as regular bladders which were then implanted back into the patients bodies.[14] The team is currently[when?] working on re-growing over 22 other different organs including the liver, heart, kidneys and testicles.[15]

From 1995 to 1998 Michael D. West, PhD, organized and managed the research between Geron Corporation and its academic collaborators James Thomson at the University of Wisconsin-Madison and John Gearhart of Johns Hopkins University that led to the first isolation of human embryonic stem and human embryonic germ cells.[16]

Dr. Stephen Badylak, a Research Professor in the Department of Surgery and director of Tissue Engineering at the McGowan Institute for Regenerative Medicine at the University of Pittsburgh, developed a process for scraping cells from the lining of a pigs bladder, decellularizing (removing cells to leave a clean extracellular structure) the tissue and then drying it to become a sheet or a powder. This cellular matrix powder was used to regrow the finger of Lee Spievak, who had severed half an inch of his finger after getting it caught in a propeller of a model plane.[17][18][19][dubious discuss] As of 2011, this new technology is being employed by the military to U.S. war veterans in Texas, as well as to some civilian patients. Nicknamed pixie-dust, the powdered extracellular matrix is being used success to regenerate tissue lost and damaged due to traumatic injuries.

In June 2008, at the Hospital Clnic de Barcelona, Professor Paolo Macchiarini and his team, of the University of Barcelona, performed the first tissue engineered trachea (wind pipe) transplantation. Adult stem cells were extracted from the patients bone marrow, grown into a large population, and matured into cartilage cells, or chondrocytes, using an adaptive method originally devised for treating osteoarthritis. The team then seeded the newly grown chondrocytes, as well as epithileal cells, into a decellularised (free of donor cells) tracheal segment that was donated from a 51 year old transplant donor who had died of cerebral hemorrhage. After four days of seeding, the graft was used to replace the patients left main bronchus. After one month, a biopsy elicited local bleeding, indicating that the blood vessels had already grown back successfully.[20][21]

In 2009 the SENS Foundation was launched, with its stated aim as the application of regenerative medicine defined to include the repair of living cells and extracellular material in situ to the diseases and disabilities of ageing. [22]

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MD Supervised Stem Cell Therapy

PUBLIC RELEASE DATE:

7-Nov-2013

Contact: B. D. Colen bd_colen@harvard.edu 617-495-7821 Harvard University

Harvard Stem Cell Scientists have discovered that the same chemicals that stimulate muscle development in zebrafish can also be used to differentiate human stem cells into muscle cells in the laboratory, an historically challenging task that, now overcome, makes muscle cell therapy a more realistic clinical possibility.

The work, published this week in the journal Cell, began with a discovery by Boston Children's Hospital researchers, led by Leonard Zon, MD, and graduate student Cong (Tony) Xu, who tested 2,400 different chemicals in cultures of zebrafish embryo cells to determine if any could increase the numbers of muscle cells formed. Using fluorescent reporter fish in which muscle cells were visible during their creation, the researchers found six chemicals that were very effective at promoting muscle formation.

Zon shared his results with Harvard Department of Stem Cell and Regenerative Biology professor Amy Wagers, PhD, and Mohammadsharif Tabebordbar, a graduate student in her laboratory, who tested the six chemicals in mice. One of the six, called forskolin, was found to increase the numbers of muscle stem cells from mice that could be obtained when these cells were grown in laboratory dishes. Moreover, the cultured cells successfully integrated into muscle when transplanted back into mice.

Inspired by the successful application of these chemicals in mice, Salvatore Iovino, PhD, a joint postdoctoral fellow in the Wagers lab and the lab of C. Ronald Kahn, MD, at the Joslin Diabetes Center, investigated whether the chemicals would also affect human cells and found that a combination of three chemicals, including forskolin, could induce differentiation of human induced pluripotent stem (iPS) cells, made by reprogramming skin cells. Exposure of iPS cells to these chemicals converted them into skeletal muscle, an outcome the Wagers and Kahn labs had been striving to achieve for years using conventional methods. When transplanted into a mouse, the human iPS-derived muscle cells also contributed to muscle repair, offering early promise that this protocol could provide a route to muscle stem cell therapy in humans.

The interdisciplinary, cross-laboratory collaboration between Zon, Wagers, and Kahn highlights the advantage of open exchange between researchers. "If we had done this screen directly on human iPS cells, it would have taken at least 10 times as long and cost 100 times as much," said Wagers. "The zebrafish gave us a big advantage here because it has a fast generation time, rapid development, and can be easily and relatively cheaply screened in a culture dish."

"This research demonstrates that over 300 million years of evolution, the pathways used in the fish are conserved through vertebrates all the way up to the human," said Wagers' fellow HSCRB professor Leonard Zon, chair of the Harvard Stem Cell Institute Executive Committee and director of the stem cell program at Boston Children's Hospital. "We can now make enough human muscle progenitors in a dish to allow us to model diseases of the muscle lineage, like Duchenne muscular dystrophy, conduct drug screens to find chemicals that correct those disease, and in the long term, efficiently transplant muscle stem cells into a patient."

In a similar biomedical application, Kahn, who is chief academic officer at the Joslin, plans to apply the new ability to quickly produce muscle stem cells for diabetes research. His lab will generate iPS-derived muscle cells from people who are at risk for diabetes and people who have diabetes to identify alterations that lead to insulin resistance in the muscle.

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Human muscle stem cell therapy gets help from zebrafish

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Heart attacks and congestive heart failure remain among the Nation's most prominent health challenges despite many breakthroughs in cardiovascular medicine. In fact, despite successful approaches to prevent or limit cardiovascular disease, the restoration of function to the damaged heart remains a formidable challenge. Recent research is providing early evidence that adult and embryonic stem cells may be able to replace damaged heart muscle cells and establish new blood vessels to supply them. Discussed here are some of the recent discoveries that feature stem cell replacement and muscle regeneration strategies for repairing the damaged heart.

For those suffering from common, but deadly, heart diseases, stem cell biology represents a new medical frontier. Researchers are working toward using stem cells to replace damaged heart cells and literally restore cardiac function.

Today in the United States, congestive heart failurethe ineffective pumping of the heart caused by the loss or dysfunction of heart muscle cellsafflicts 4.8 million people, with 400,000 new cases each year. One of the major contributors to the development of this condition is a heart attack, known medically as a myocardial infarction, which occurs in nearly 1.1 million Americans each year. It is easy to recognize that impairments of the heart and circulatory system represent a major cause of death and disability in the United States [5].

What leads to these devastating effects? The destruction of heart muscle cells, known as cardiomyocytes, can be the result of hypertension, chronic insufficiency in the blood supply to the heart muscle caused by coronary artery disease, or a heart attack, the sudden closing of a blood vessel supplying oxygen to the heart. Despite advances in surgical procedures, mechanical assistance devices, drug therapy, and organ transplantation, more than half of patients with congestive heart failure die within five years of initial diagnosis. Research has shown that therapies such as clot-busting medications can reestablish blood flow to the damaged regions of the heart and limit the death of cardiomyocytes. Researchers are now exploring ways to save additional lives by using replacement cells for dead or impaired cells so that the weakened heart muscle can regain its pumping power.

How might stem cells play a part in repairing the heart? To answer this question, researchers are building their knowledge base about how stem cells are directed to become specialized cells. One important type of cell that can be developed is the cardiomyocyte, the heart muscle cell that contracts to eject the blood out of the heart's main pumping chamber (the ventricle). Two other cell types are important to a properly functioning heart are the vascular endothelial cell, which forms the inner lining of new blood vessels, and the smooth muscle cell, which forms the wall of blood vessels. The heart has a large demand for blood flow, and these specialized cells are important for developing a new network of arteries to bring nutrients and oxygen to the cardiomyocytes after a heart has been damaged. The potential capability of both embryonic and adult stem cells to develop into these cells types in the damaged heart is now being explored as part of a strategy to restore heart function to people who have had heart attacks or have congestive heart failure. It is important that work with stem cells is not confused with recent reports that human cardiac myocytes may undergo cell division after myocardial infarction [1]. This work suggests that injured heart cells can shift from a quiescent state into active cell division. This is not different from the ability of a host of other cells in the body that begin to divide after injury. There is still no evidence that there are true stem cells in the heart which can proliferate and differentiate.

Researchers now know that under highly specific growth conditions in laboratory culture dishes, stem cells can be coaxed into developing as new cardiomyocytes and vascular endothelial cells. Scientists are interested in exploiting this ability to provide replacement tissue for the damaged heart. This approach has immense advantages over heart transplant, particularly in light of the paucity of donor hearts available to meet current transplantation needs.

What is the evidence that such an approach to restoring cardiac function might work? In the research laboratory, investigators often use a mouse or rat model of a heart attack to study new therapies (see Figure 9.1. Rodent Model of Myocardial Infarction). To create a heart attack in a mouse or rat, a ligature is placed around a major blood vessel serving the heart muscle, thereby depriving the cardiomyocytes of their oxygen and nutrient supplies. During the past year, researchers using such models have made several key discoveries that kindled interest in the application of adult stem cells to heart muscle repair in animal models of heart disease.

Figure 9.1. Rodent Model of Myocardial Infarction.

( 2001 Terese Winslow, Lydia Kibiuk)

Recently, Orlic and colleagues [9] reported on an experimental application of hematopoietic stem cells for the regeneration of the tissues in the heart. In this study, a heart attack was induced in mice by tying off a major blood vessel, the left main coronary artery. Through the identification of unique cellular surface markers, the investigators then isolated a select group of adult primitive bone marrow cells with a high capacity to develop into cells of multiple types. When injected into the damaged wall of the ventricle, these cells led to the formation of new cardiomyocytes, vascular endothelium, and smooth muscle cells, thus generating de novo myocardium, including coronary arteries, arterioles, and capillaries. The newly formed myocardium occupied 68 percent of the damaged portion of the ventricle nine days after the bone marrow cells were transplanted, in effect replacing the dead myocardium with living, functioning tissue. The researchers found that mice that received the transplanted cells survived in greater numbers than mice with heart attacks that did not receive the mouse stem cells. Follow-up experiments are now being conducted to extend the posttransplantation analysis time to determine the longer-range effects of such therapy [8]. The partial repair of the damaged heart muscle suggests that the transplanted mouse hematopoietic stem cells responded to signals in the environment near the injured myocardium. The cells migrated to the damaged region of the ventricle, where they multiplied and became "specialized" cells that appeared to be cardiomyocytes.

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9. Can Stem Cells Repair a Damaged Heart? [Stem Cell Information]

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