Monthly Archives: September 2016


Stem Cell Basics I. | stemcells.nih.gov

Stem cells have the remarkable potential to develop into many different cell types in the body during early life and growth. In addition, in many tissues they serve as a sort of internal repair system, dividing essentially without limit to replenish other cells as long as the person or animal is still alive. When a stem cell divides, each new cell has the potential either to remain a stem cell or become another type of cell with a more specialized function, such as a muscle cell, a red blood cell, or a brain cell.

Stem cells are distinguished from other cell types by two important characteristics. First, they are unspecialized cells capable of renewing themselves through cell division, sometimes after long periods of inactivity. Second, under certain physiologic or experimental conditions, they can be induced to become tissue- or organ-specific cells with special functions. In some organs, such as the gut and bone marrow, stem cells regularly divide to repair and replace worn out or damaged tissues. In other organs, however, such as the pancreas and the heart, stem cells only divide under special conditions.

Until recently, scientists primarily worked with two kinds of stem cells from animals and humans: embryonic stem cells and non-embryonic "somatic" or "adult" stem cells. The functions and characteristics of these cells will be explained in this document. Scientists discovered ways to derive embryonic stem cells from early mouse embryos more than 30 years ago, in 1981. The detailed study of the biology of mouse stem cells led to the discovery, in 1998, of a method to derive stem cells from human embryos and grow the cells in the laboratory. These cells are called human embryonic stem cells. The embryos used in these studies were created for reproductive purposes through in vitro fertilization procedures. When they were no longer needed for that purpose, they were donated for research with the informed consent of the donor. In 2006, researchers made another breakthrough by identifying conditions that would allow some specialized adult cells to be "reprogrammed" genetically to assume a stem cell-like state. This new type of stem cell, called induced pluripotent stem cells (iPSCs), will be discussed in a later section of this document.

Stem cells are important for living organisms for many reasons. In the 3- to 5-day-old embryo, called a blastocyst, the inner cells give rise to the entire body of the organism, including all of the many specialized cell types and organs such as the heart, lungs, skin, sperm, eggs and other tissues. In some adult tissues, such as bone marrow, muscle, and brain, discrete populations of adult stem cells generate replacements for cells that are lost through normal wear and tear, injury, or disease.

Given their unique regenerative abilities, stem cells offer new potentials for treating diseases such as diabetes, and heart disease. However, much work remains to be done in the laboratory and the clinic to understand how to use these cells for cell-based therapies to treat disease, which is also referred to as regenerative or reparative medicine.

Laboratory studies of stem cells enable scientists to learn about the cells essential properties and what makes them different from specialized cell types. Scientists are already using stem cells in the laboratory to screen new drugs and to develop model systems to study normal growth and identify the causes of birth defects.

Research on stem cells continues to advance knowledge about how an organism develops from a single cell and how healthy cells replace damaged cells in adult organisms. Stem cell research is one of the most fascinating areas of contemporary biology, but, as with many expanding fields of scientific inquiry, research on stem cells raises scientific questions as rapidly as it generates new discoveries.

I.Introduction|Next

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Stem Cell Basics I. | stemcells.nih.gov

Stem-cell clinics face new scrutiny from federal …

BEVERLY HILLS, Calif. In a corner of Mark Bermans cosmetic-surgery suite is a box labeled the Time Machine that is the heart of his stem-cell operation.

In mini-liposuction procedures, Berman extracts fat tissue from patients and puts it into the Time Machine box, where a centrifuge separates stem cells from fat. The cells are then injected back into the patients to supposedly treat a variety of health problems, such as arthritic knees, heart disease, amyotrophic lateral sclerosis and even autism.

Berman, 63, is the co-founder of the biggest network of commercial stem-cell clinics in the United States. His therapies dont have the Food and Drug Administrations stamp of approval, but he said he doesnt need it.

If stem cells didnt work, we would go back to our day jobs, Berman said. Its a disruptive technology. We are the black swan.

Cosmetic surgeon Mark Berman explains how he started working with other surgeons to use stem cells taken from patients liposuction procedures to treat their other conditions. (Youtube/Cell Surgical Network)

But the disruptive technology might itself face disruption. The FDA, which has taken a mostly hands-off approach toward the rapidly proliferating stem-cell clinics, is signaling that some of the treatments should be regulated as drugs are, which would require advance approval. That would entail a lengthy process, with extensive safety and effectiveness data, at a potential cost of millions of dollars.

The issue has ignited a fierce debate among physicians, patients, scientists and politicians about whether the agency should crack down on therapies that critics deride as snake oil but that some patients swear by. And it is fueling a broader, longer-term debate over how cellular therapies should be regulated.

On Monday, the FDA opened two days of hearings on draft guidelines intended to clarify the agencys views on stem-cell treatments. The guidelines, which deal with decade-old regulations, have set off an uproar in parts of the stem-cell world because they could jeopardize many of the clinics operations.

Thats fine with some leading scientists who say the clinics are peddling potentially dangerous procedures that take advantage of desperate patients.

Hucksters are hijacking the publics enthusiasm for stem cells, said Luis Garza, a dermatologist at the Johns Hopkins School of Medicine whose lab is investigating how skin stem cells might improve care for amputees. Ninety-nine-point-nine percent of the stuff you hear about is bogus.

Paul Knoepfler, a stem-cell researcher at the University of California at Davis, said regulators for too long have remained on the sidelines while patients are charged thousands of dollars for unapproved treatments and exposed to potential risks. Im worried that these are essentially experiments, he said.

But patients who say they have benefited from clinic treatments are urging the government not to clamp down. People have the right to decide what happens in terms of the tissues and cells from their own bodies, said Doug Oliver, 54, a Nashville resident who has a rare form of macular degeneration that left him legally blind. After treatments at a Florida stem-cell clinic, he said, his vision improved significantly and now he can drive.

Stem-cell therapies, like other treatments, generally must be tested in clinical trials and approved by the FDA before being marketed to patients. But such clearance is not required if the stem cells are not altered much, are used in a function similar to their original role in the body, arent combined with another article, and dont have a systemic effect on the body. But the FDAs attempts to clarify the details have been fraught with disagreement.

Knoepfler noted, for example, that many clinics derive stem cells from fat, which the FDA views essentially as a cushioning material. Using those cells for injured knees or shoulders or diseases like Alzheimers, he said, means they are not being used for their original cushioning function.

Berman said that the versatility of stem cells means one of their basic functions is to repair damage throughout the body. In any case, he and other clinicians say, they arent subject to FDA regulation because they are practicing medicine, which the agency doesnt oversee.

Orthopedic treatments are the most commonly marketed procedures. Mayo Friedlis of the National Spine and Pain Centers, a network of pain clinics, said at the FDA hearing that stem cells derived from bone marrow are as effective as surgery for musculoskeletal disorders. But Knoepfler and other critics said there isnt enough published data to support such claims.

As the debate rages about clinics, some Republican senators, led by Mark Kirk of Illinois, want to revamp parts of the FDA approval process to expedite stem-cell therapies. But the outlook is uncertain, given the compressed congressional calendar and opposition from Democrats and some industry and patient groups.

Scientists say that stem cells remarkable ability to develop into many kinds of cells means that someday they might be used to repair diseased or damaged cells or replace entire organs. Promising developments are occurring in several areas. Stanford researchers said this year that they were stunned by the way stem cells injected directly into the brains of a small group of stroke patients had restored mobility in some patients.

Nevertheless, research for most therapies remains at an early stage, and the FDA has approved only a few stem-cell therapies, mostly for blood disorders.

Five years ago, only a few dozen stem-cell clinics existed in the United States, and most Americans seeking treatment went abroad. Now, according to a recent study co-written by Knoepfler, there are 570 clinics many in California, Florida and Texas marketing directly to consumers. Beverly Hills has 18 clinics, more than any other city. Most of the clinics use adult stem cells, not the embryonic ones that were at the center of controversy years ago because their extraction destroyed the embryos.

Berman, who spent most of his career working as a cosmetic surgeon, started providing treatments in 2010. Two years later, he co-founded the Cell Surgical Network, a stem-cell clinic business with about 80 affiliates.

Typically, Berman said, he charges patients $8,900 for a treatment, although he sometimes offers discounts or free care for patients who cannot afford his fee. He said he doesnt make claims to his patients that the treatments will work.

John Putnam, a 52-year-old Santa Monica resident, said he went to Berman four years ago, after his doctor said he needed surgery to repair sports-related injuries in both of his shoulders. At first, the stem-cell treatment didnt seem to make a difference, but after five months, he said, I had zero issues on either shoulder, and to this day my shoulders are in great shape.

Critics said that pain is very responsive to the placebo effect and that some ailments improve on their own.

Berman said his network has treated about 5,000 patients, including him and his wife, and that the only side effects have involved occasional soreness at the injection site and bruising around the abdomen because of liposuction. He said that in his experience, 85 percent of the orthopedic patients get better, and that he has seen improvement in some patients with Parkinsons disease and autism, but not in the dozen or so patients he has treated for amyotrophic lateral sclerosis (ALS).

Knoepfler brushes off such assertions and focuses on safety. He noted that two patients died after being treated at a Florida clinic. There also have been reports of patients being blinded by treatments for eye problems. And the FDA warns that stem cells can migrate to the wrong site or turn into tumors.

The clinics fate depends partly on whether the FDA sticks to the tough stance outlined in the draft guidelines. But even if it does, it is not clear that the agency will have the resources to enforce the rules, some experts said.

In the absence of strong oversight, scientists and others are worried that patients may be swayed by personal testimonials. I think we have to be careful about anecdotes, said Timothy Caulfield, a University of Alberta law professor who has followed the issue for years. We need good, controlled studies.

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What is PRP therapy? | OrthoNC

PRPisPlatelet-Rich Plasmatherapy. Although an emerging technology and technique in sports medicine, it has been used since the mid-1990s in dental and oral surgery and to aid in soft tissue recovery following plastic surgery.

RP treatment recently gained widespread recognition in the sports world when Hines Ward and Troy Polamalu of the Pittsburgh Steelers received PRP therapy prior to winning Super Bowl XLIII. Other high profile athletes include Tiger Woods who received four treatments following knee surgery and pitchers Takashi Saito and Bartolo Colon -- both recent examples of PRP success in Major League Baseball.

PRP therapy, which takes approximately twenty minutes to complete, begins with collection of 30 milliliters of the patients blood. The blood sample is placed in a centrifuge to separate the platelet-rich plasma from the other components of whole blood. Doctors then inject the concentrated platelets into the site of the injury often using ultrasound guidance for accuracy. Platelets function as a natural reservoir for growth factors that are essential to repair injured tissues. The growth factors that the platelets secrete stimulate tissue recovery by increasing collagen production, enhancing tendon stem cell proliferation, and tenocyte-related gene and protein expression. These growth factors also stimulate blood flow and cause cartilage to become more firm and resilient. PRP activates tenocytes to proliferate quickly and produce collagen to repair injured tendons, ligaments, cartilage, and muscles.

You will feel a notable increase in pain in the days immediately following the injection. Pain intensity becomes less each day as functional mobility and general functional ability increase along with endurance and strength. You will notice gradual improvement 2-6 weeks after PRP therapy. Some patients report ongoing improvement 6-9 months after PRP therapy is administered. In some studies, Ultrasound and MRI images have shown definitive tissue repair has occurred after PRP therapy, supporting the proof of the healing process. By treating injured tissues before the damage progresses, surgical intervention may be avoided.

Injuries treated with PRP therapy include: rotator cuff, quadriceps, hamstring, Achilles tendon injuries and tennis elbow. Essentially any tendon or ligament injury except complete tears may be treated successfully with PRP. PRP therapy is exactly the treatment needed to reduce the downtime of the athlete while also reducing the chance for re-injury or perhaps the risk of a more serious injury that will result in surgical intervention or permanent disability.

Not necessarily. While many chronic conditions may respond to PRP therapy, obviating the need for a surgical procedure, it is impossible to predict which will respond and which will fail to do so. A chronic, incompletely healed condition is characterized by excessive scar tissue within the tendon/ligament. This may lead to impaired joint function or leave the tendon or ligament susceptible to re-injury or complete disruption. This inferior, or in some cases, aborted, healing process is due to poor blood supply to the injury site. Most tendons have a poor blood supply and often are the site of microscopic tears or chronic scarring. The body naturally has a difficult time healing these structures. PRP is thought to initiate a response that makes the chronic condition appear to be a new injury, and thus, provoke a new/renewed healing response. This new healing response is then augmented by the super-concentrated healing factors contained within the PRP. Therefore, with PRP therapy in combination with appropriate reconditioning, we may improve the chance of healing and diminish the opportunity for escalation of the injury. A positive result may lead to a decrease need for surgical intervention.

Unfortunately, there is no randomized, prospective, double-blind clinical trial that documents the efficacy of PRP treatment. For this reason, most insurance companies will not support (read: pay for or "cover") PRP treatment. Moreover a standard treatment regimen does not yet exist (i.e. Number of injections required, spacing between injections given in series, rehabilitation protocol during and after a series, etc); however, PRP is being used with regularity at the highest levels of sport and in the most highly compensated athletes in the world today. Claims of successful treatment are purely anecdotal; case reports abound of successful PRP treatment of almost any malady. Conditions that can be treated successfully with PRP therapy include the shoulder involving: rotator cuff tendinitis, impingement, bursitis, and bicipital tendinitis; In the wrist and hand involving: DeQuervains tenosynovitis, tendinitis, ligament tears; In the elbow involving: tennis elbow and golfers elbow; the hip involving iliotibial band tendinitis (ITB Syndrome), ilio-psoas tendinitis and bursitis, greater trochanteric bursitis, sacroiliac joint dysfunction; the knee involving: patellar tendinitis, partially torn or strained major knee ligaments (LCL/MCL); the ankle and foot involving: Achilles tendinitis, peroneal tendinitis, recurrent ankle sprains, and other foot or ankle tendinitis; neck and back involving: facet joint arthritis, rib problems. I believe PRP treatment is best reserved for incomplete, chronic degeneration and tears of extra-articular ligaments and tendons. I also believe that ultrasound guidance is essential to accuracy of placement and enhancing efficacy of the injection. More research is needed to determine the best use and protocol for successful application of this, admittedly, emerging technique.

Orthopaedic Specialists of North Carolina believes that implementing PRP therapy as a viable procedure may: decrease the progression of more serious injuries, decrease the overall time for healing, and ultimately decrease the overall need for surgical intervention. This promising adjunctive form of therapy holds the potential of healing previously problematic chronic injuries, provide a treatment option for debilitating injuries previously deemed untreatable, and serve as an alternative to surgical intervention.

Written by Dr. Mark W. Galland, Orthopaedic Surgery and Sports Medicine

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What is PRP therapy? | OrthoNC

Tampa Stem Cell Therapy | PRP | Knee | Joint Replacement …

Featured in the News Across the Nation: Dr. Dennis Lox, an Expert in Sports & Regenerative Medicine, Discusses Knee Stem Cell Therapy, Hip Stem Cell Therapyand Ankle Stem Cell Therapy.

Since 1990, Dennis M. Lox, M.D. has been helping patients increase their quality of life by reducing their pain. He emphasizes non-surgical treatments and appropriate use of medications, if needed.

Many patients are turning to stem cell therapy as a means of nonsurgical joint pain relief when their mobility and quality of life are severely affected by conditions like osteoarthritis, torn tendons, and injured ligaments. Dennis M. Lox, M.D. specializes in this progressive, innovative treatment that may be able to help you return to an active, fulfilling life.

Each week, Dr. Dennis Lox receives inquiries from aroundthe worldregarding stem cell therapy.

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Stem cell therapy for joint injuries and osteoarthritis is suited for many individuals, fromprofessional athletes to active seniors. Adult mesenchymal stem cells, not embryonic stem cells, are used in this procedure, which is performed right in the comfort of Dr. Loxs state-of-the-art clinic. The cells are simply extracted from the patients own body (typically from bone marrow or adipose/ fat tissue), processed in our office, and injected directly into the site of injury. Conditions that can be addressed with stem cell treatment include osteoarthritis, degenerative disc disease, knee joint issues (such as meniscus tears), shoulder damage (such as rotator cuff injuries), hip problems (such as labral tears), and tendonitis, among others. For many patients, a stem cell procedure in the knee, hip, shoulder, or another area of the body relieves pain, increases mobility, and may be able to delay or eliminate the need for more aggressive treatments like joint replacement surgery.

If you have questions about adult stem cell therapy for joint injuries and arthritis, how the procedure is performed, and how the stem cells work to repair injured joints and tissues, Dr. Lox would be happy to educate you about the entire process.

If you are searching for effective, nonsurgical joint replacement alternatives, regenerative therapies like stem cell treatments and PRP therapy may be the ideal solution. At Florida Spine and Sports Medicine, we focus on helping patients return to mobile, independent lives without the need for the risks and downtime associated with highly invasive surgery.PRP Therapy, Stem Cell Treatments & Other Joint Replacement Alternatives for Patients in Tampa, Clearwater, New Port Richey & throughout the U.S.A. and the world.

PRP (platelet rich plasma) therapy can be used alone, or adult stem cell therapy is often used in conjunction with PRP as a means of promoting healing in degenerated or injured joints, cartilage, muscles, and tendons. From knee pain to spine pain, there are a wide range of conditions that may respond to these forms of regenerative medicine. Some of the most common issues that Dr. Lox treats at Florida Spine and Sports Medicine include knee arthritis, meniscal tears, S/I joint pain, hip conditions, shoulder pain, and ankle pain, among others.

If you live in Clearwater, St. Petersburg, New Port Richey, Tampa, or anywhere else in the nation and would like to schedule a consultation to discuss PRP therapy, stem cell therapy, or other alternatives to joint surgery with Dr. Lox, please contact Florida Spine and Sports Medicine today.

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