What can mesenchymal stem cells do?

Mesenchymal stem cells (MSCs) are an example of tissue or 'adult' stem cells. They are multipotent, meaning they can produce more than one type of specialized cell of the body, but not all types. MSCs make the different specialized cells found in the skeletal tissues. For example, they can differentiate or specialize into cartilage cells (chondrocytes), bone cells (osteoblasts) and fat cells (adipocytes). These specialized cells each have their own characteristic shapes, structures and functions, and each belongs in a particular tissue.

Some early research suggested that MSCs might also differentiate into many different types of cells that do not belong to the skeletal tissues, such as nerve cells, heart muscle cells, liver cells and endothelial cells, which form the inner layer of blood vessels. These results have not been confirmed to date. In some cases, it appears that the MSCs fused together with existing specialized cells, leading to false conclusions about the ability of MSCs to produce certain cell types. In other cases, the results were an artificial effect caused by chemicals used to grow the cells in the lab.

Mesenchymal stem cell differentiation: MSCs can make fat, cartilage and bone cells. They have not been proven to make other types of cells of the body.

MSCs were originally found in the bone marrow. There have since been many claims that they also exist in a wide variety of other tissues, such as umbilical cord blood, adipose (fat) tissue and muscle. It has not yet been established whether the cells taken from these other tissues are really the same as, or similar to, the mesenchymal stem cells of the bone marrow.

The bone marrow contains many different types of cells. Among them are blood stem cells (also called hematopoietic stem cells; HSCs) and a variety of different types of cells belonging to a group called mesenchymal cells. Only about 0.001-0.01% of the cells in the bone marrow are mesenchymal stem cells.

It is fairly easy to obtain a mixture of different mesenchymal cell types from adult bone marrow for research. But isolating the tiny fraction of cells that are mesenchymal stem cells is more complicated. Some of the cells in the mixture may be able to form bone or fat tissues, for example, but still do not have all the properties of mesenchymal stem cells. The challenge is to identify and pick out the cells that can both self-renew (produce more of themselves) and can differentiate into three cell types bone, cartilage and fat. Scientists have not yet reached a consensus about the best way to do this.

No treatments using MSCs are yet available. However, several possibilities for their use in the clinic are currently being explored.

Bone and cartilage repair The ability of MSCs to differentiate into bone cells called osteoblasts has led to their use in early clinical trials investigating the safety of potential bone repair methods. These studies are looking at possible treatments for localized skeletal defects (damage at a particular place in the bone).

Other research is focussed on using MSCs to repair cartilage. Cartilage covers the ends of bones and allows one bone to slide over another at the joints. It can be damaged by a sudden injury like a fall, or over a long period by a condition like osteoarthritis, a very painful disease of the joints. Cartilage does not repair itself well after damage. The best treatment available for severe cartilage damage is surgery to replace the damaged joint with an artificial one. Because MSCs can differentiate into cartilage cells called chondrocytes, scientists hope MSCs could be injected into patients to repair and maintain the cartilage in their joints. Researchers are also investigating the possibility that transplanted MSCs may release substances that will tell the patients own cells to repair the damage.

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Mesenchymal stem cells: the 'other' bone marrow stem cells ...

Miami, FL (PRWEB) April 09, 2015

Global Stem Cells Group subsidiary Adimarket has been named the Latin America distributor for bone marrow technology leader Ranfac Corporation. The announcement coincides with Global Stem Cells Groups most recent expansion plans in Latin America, an ongoing effort to meet the regions growing demands for access to regenerative medicine and stem cell therapies.

Ranfac manufactures state-of-the-art surgical, radiology, hematology and orthopedic products including a range of bone marrow aspiration needles, each designed to provide a simple means of harvesting marrow from the patients sternum (breastbone) or the iliac crest (part of the pelvic bone) for a variety of medical procedures. Ranfacs newest technology is designed to harvest high quality bone marrow derived cells without the need for centrifugation.

Ranfac bone marrow technology is used by physicians and medical specialists worldwide. Global Stem Cells Group Advisory Board member Joseph Purita, M.D., a pioneer in the use of laser and stem cell therapies in orthopedic medicine, endorses Ranfacs bone marrow aspiration technology. Purita recently joined other specialists including fellow GSCG Advisory Board member David B Harrell, PhD, Brt, OF, FAARM, FRIPH, DABRM, in a trial study and white paper collaboration on Ranfacs new, non-centrifugal bone marrow technology.

Both Purita and Harrell endorse the Ranfac systems enhanced safety and ability to increase the concentrations of stem and progenitor cells during the bone marrow aspiration process.

Our ground-breaking hematology and orthopedic products for bone marrow access, aspiration, stem cell harvesting and biopsy procedures are designed to provide a more efficient result during critical procedures, says Ranfac CEO Barry Zimble. We believe that this is the perfect time to team with Global Stem Cells Group as our distribution partner in Latin Americas fast-growing medical community.

The collaboration between Global Stem Cells Group and Ranfac is another step toward GSCGs commitment to expanding its presence in communities that need and deserve access to cutting-edge regenerative medicine, not only in Latin America but also worldwide.

The timing couldnt be better to represent Ranfacs cutting edge bone marrow technology in the emerging markets of Latin America. Global is always looking to provide patients and practitioners with the best resources that regenerative medicine has to offer says Ricardo DeCubas, Global Stem Cells Group co-founder and Regenestem CEO.

For more information visit the Global Stem Cells Group website, email bnovas@stemcellsgroup.com, or call 305-224-1858.

About Global Stem Cells Group:

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Global Stem Cells Group Subsidiary Adimarket Named Latin American Distributor for Ranfac Bone Marrow Technology

Stem Cell Research in Cardiology
Bharat Book Bureau provides the report, on Stem Cell Research in Cardiology. The study is segmented by Source (Allogenic and Autogenic) and by Type (Bone Marrow Stem Cells, Embryonic...

By: Bharat Book

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Stem Cell Research in Cardiology - Video

Telomeres are short stretches of repeated nucleotides that protect the ends of chromosomes. In somatic cells, these protective sequences become shorter with each cellular replication until a critical length is reached, which can trigger cell death.

In actively replicating cells such as germ cells, embryonic stem cells, and blood stem cells of the bone marrow, the enzyme telomerase replenishes these protective caps to ensure adequate replication. Cancer cells also seem to have the ability to activate telomerase, which allows them to keep dividing indefinitely, with dire consequences for the patient. However, according to a study published April 10 in the JNCI: Journal of the National Cancer Institute, the extent to which cancer cells can utilize telomerase may depend on which variants of the genes related to telomerase activity are expressed in an individual's cells.

Telomere shortening is an inevitable, age-related process, but it can also be exacerbated by lifestyle factors such as obesity and smoking. Thus, some previous studies have found an association between short telomeres and high mortality, including cancer mortality, while others have not. A possible explanation for the conflicting evidence may be that the association found between short telomeres and increased cancer mortality was correlational but other factors (age and lifestyle), not adjusted for in previous studies, were the real causes. Genetic variation in several genes associated with telomere length (TERC, TERT, OBFC1) is independent of age and lifestyle. Thus, a genetic analysis called a Mendelian randomization could eliminate some of the confounding and allow the presumably causal association of telomere length and cancer mortality to be studied.

To perform this analysis, Line Rode, M.D., Ph.D., of the Department of Clinical Biochemistry and The Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospital, Herlev, Denmark, and colleagues, used data from two prospective cohort studies, the Copenhagen City Heart Study and the Copenhagen General Population Study, including 64,637 individuals followed from 1991-2011. Participants completed a questionnaire and had a physical examination and blood drawn for biochemistry, genotyping, and telomere length assays.

For each subject, the authors had information on physical characteristics such as body mass index, blood pressure, and cholesterol measurements, as well as smoking status, alcohol consumption, physical activity, and socioeconomic variables. In addition to the measure of telomere length for each subject, three single nucleotide polymorphisms of TERC, TERT, and OBFC1 were used to construct a score for the presence of telomere shortening alleles.

A total of 7607 individuals died during the study, 2420 of cancer. Overall, as expected, decreasing telomere length as measured in leukocytes was associated with age and other variables such as BMI and smoking and with death from all causes, including cancer. Surprisingly, and in contrast, a higher genetic score for telomere shortening was associated specifically with decreased cancer mortality, but not with any other causes of death, suggesting that the slightly shorter telomeres in the cancer patients with the higher genetic score for telomere shortening might be beneficial because the uncontrolled cancer cell replication that leads to tumor progression and death is reduced.

The authors conclude, "We speculate that long telomeres may represent a survival advantage for cancer cells, allowing multiple cell divisions leading to high cancer mortality."

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Contact info:

Stig E. Bojesen, M.D., D.M.Sc., stig.egil.bojesen@regionh.dk

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Telomeres and cancer mortality: The long and the short of it

Rice University and Texas Children's Hospital scientists are using stem cells from amniotic fluid to promote the growth of robust, functional blood vessels in healing hydrogels.

In new experiments, the lab of bioengineer Jeffrey Jacot combined versatile amniotic stem cells with injectable hydrogels used as scaffolds in regenerative medicine and proved they enhance the development of vessels needed to bring blood to new tissue and carry waste products away.

The results appear in the Journal of Biomedical Materials Research Part A.

Jacot and his colleagues study the use of amniotic fluid cells from pregnant women to help heal infants born with congenital heart defects. Such fluids, drawn during standard tests, are generally discarded but show promise for implants made from a baby's own genetically matched material.

He contends amniotic stem cells are valuable for their ability to differentiate into many other types of cells, including endothelial cells that form blood vessels.

"The main thing we've figured out is how to get a vascularized device: laboratory-grown tissue that is made entirely from amniotic fluid cells," Jacot said. "We showed it's possible to use only cells derived from amniotic fluid."

In the lab, researchers from Rice, Texas Children's Hospital and Baylor College of Medicine combined amniotic fluid stem cells with a hydrogel made from polyethylene glycol and fibrin. Fibrin is a biopolymer critical to blood clotting, cellular-matrix interactions, wound healing and angiogenesis, the process by which new vessels branch off from existing ones. Fibrin is widely used as a bioscaffold but suffers from low mechanical stiffness and rapid degradation. Combining fibrin and polyethylene glycol made the hydrogel much more robust, Jacot said.

The lab used vascular endothelial growth factor to prompt stem cells to turn into endothelial cells, while the presence of fibrin encouraged the infiltration of native vasculature from neighboring tissue.

Mice injected with fibrin-only hydrogels showed the development of thin fibril structures, while those infused with the amniotic cell/fibrin hydrogel showed far more robust vasculature, according to the researchers.

Similar experiments using hydrogel seeded with bone marrow-derived mesenchymal cells also showed vascular growth, but without the guarantee of a tissue match, Jacot said. Seeding with endothelial cells didn't work as well as the researchers expected, he said.

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Amniotic stem cells demonstrate healing potential

Normal doses of chemotherapy (chemo) can harm normal cells as well as cancer cells. A stem cell transplant offers doctors a way to use the very high doses of chemo needed to kill all the leukemia cells. Although the drugs destroy the patient's bone marrow, stem cells given after the chemo can restore the blood-making bone marrow stem cells. This is called a stem cell transplant (SCT).

These blood-forming stem cells can come from the bone marrow or peripheral blood from either the patient or from a donor whose tissue type closely matches that of the patient. For CML, a donor (or allogeneic) transplant is most often used. The donor may be a brother or sister or less often a person not related to the patient.

Before modern targeted therapy drugs like imatinib (Gleevec), SCT was commonly used to treat CML. Thats because before drugs like imatinib, less than half of patients lived more than 5 years after diagnosis. Now, these drugs are the standard treatment, and transplants are being used less often. Still, a SCT from a donor offers the only proven chance to cure this disease, and many doctors will recommend a transplant for younger patients, especially children. Transplant may also be recommended if the CML is not responding well to the new drugs.

For more information on stem cell transplants, see Stem Cell Transplant (Peripheral Blood, Bone Marrow, and Cord Blood Transplants).

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Bone marrow or peripheral blood stem cell transplant for ...

With no match in the family, his doctors in Ahmedabad started scrounging for random donors across India. There are only four voluntary marrow donor registries in Delhi, Chennai and Mumbai.

Two years ago, 15-year-old blood cancer patient Bhargav Gajipara's parents were a worried lot. Doctors had given up all hope for his cure as no medicines would work on the cancer. The last resort, they said, was a bone marrow transplant. Bhargav was suffering from acute myeloid leukemia (AML), a condition in which cancerous white blood cells (WBCs) get generated in the bone marrow and circulate in the blood stream. Even as Bhargav had fever and bleeding, his search for a bone marrow match within his family failed. The chances of a bone marrow transplant for him looked bleak until May in 2013.

With no match in the family, his doctors in Ahmedabad started scrounging for random donors across India. There are only four voluntary marrow donor registries in Delhi, Chennai and Mumbai.

Life suddenly changed for Bhargav in July, when his bone marrow matched with hundred percent accuracy with that of 26-year-old media professional Sachin Mampatta of Mumbai. The chance of finding a random bone marrow donor match are one in over 10,000.

On Tuesday, Bhargav and Sachin met one year after the latter donated his marrow to the patient. Sachin had incidentally pledged his marrow around the same time when the request for procuring Bhargav's match was put in by doctors. "I became aware that people can pledge their marrow when I attended a marrow donor drive at Matunga. The doctors took a swab from my inner cheek and genetically typed it. A few months later I received a call asking if I would be in a position to donate my marrow to Bhargav. I readily agreed," said Sachin.

"Sachin's blood was taken and his stem cells were extracted from the bloodstream. The 220 ml of stem cell component was transported to the Ahmedabad-based hospital where Bhargava was admitted," said Raghu Rajagopal, CEO, Datri Blood Stem Cell Donors Registry.

The doctors administered injections to destroy all the WBCs in Bhargav's blood and transfused Sachin's stem cells in Bhargav's blood. Soon, his blood was free of cancerous cells.

Ashok spent Rs 25 lakhs for Bhargav's bone marrow transplant procedure and raised money by selling his ancestral land in Rajkot.

Datri has 80,000 voluntary donors who have pledged their marrow since 2009. But the demand for marrow is very high. Up to one lakh people get blood cancer every year, a sizeable chunk of whom can be cured only through bone marrow transplant. "We have up to 2,500 patients on list, waiting to receive bone marrow, but have not been able to find a match for them. We get 15-20 patients every day who enroll for want of marrow. Many patients die on waiting list. More Indians need to come up and pledge their bone marrow," said Rajagopal.

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A bone marrow transplant made them blood brothers

LOS ANGELES (KABC) --

While Roeuy Garay was pregnant with her daughter Brook, she felt weak and an unusual back pain. Her doctors thought it was just part of the pregnancy. But a few weeks after her delivery, her fiance Joseph knew something was seriously wrong.

"I passed out and he took me to urgent care and said, 'Something is wrong with her. It's got to be her kidney or something. We need to do some blood tests,'" Roeuy said.

A bone biopsy and body scan revealed a diagnosis the 36-year-old Corona mother of four could not believe.

"They came in and said, 'Yeah, you have multiple myeloma, and it's about between 70 to 80 percent of your blood is cancer,'" she said.

Multiple myeloma, also called Kahler's disease, is a cancer of the plasma cells, which are in the blood stream. Her best chance at survival is a bone marrow transplant.

None of her siblings were a match and being of Cambodian descent, Roeuy's odds of finding a match are very slim. It's a fact that is hard to hide from her children.

There are 12 million people in the National Bone Marrow Registry, but only 7 percent are Asian and only a small fraction of that are Southeast Asian.

Dr. Elizabeth Budde with City of Hope National Medical Center in Duarte said it only takes a cheek swab to be part of the registry and donating stem cells can be as easy as donating blood.

For now, Roeuy is in remission so she needs a match as soon as possible.

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Mother of 4 seeks bone marrow match

Chris Goodman said its one of the most rewarding things hes ever done.

His stem cells reside inthe blood of a woman hes never met.

Goodman, a junior at Western Kentucky University, is working with a drive sponsored byWKU Greek Life and WKU student-athletesto register people for potential bone marrow donations. Donated stem cells, which are extracted from bone marrow, can be used to help people recover from serious illnesses.

The drive is April 20-22 at Raymond B. Preston Health and Activities Center. The hours are from 10 a.m. to 6 p.m.April 20 and 21 and from 10 a.m.to 7 p.m.April 22 in the Blue Court. Goodman will be working at the drive April 21, he said.

Goodman, 20, is from Knoxville, Tenn., and is a backstroke swimmer for WKU. Hes studying speech pathology and communications disorders and wants someday to work with kids who have speech difficulties.

A five-minute swab of your cheek could help save a life, Goodman said.

Goodman received a short note from the woman who was helped by his donation.

The letter I received from my patient was one which was very short in length but nonetheless very impactful, he said in an email. She and her family were very grateful that a complete stranger would give so much to someone they dont know.

His journey to becoming a bone marrow donator began when he registered withDelete Blood Cancer DKMSas a potential donor in April 2013. In October, Delete Blood Cancer sent him to Washington, D.C., and he donated stem cells during a five-day process.

He watched movies while sitting in his hospital bed as the procedure occurred. Having never even given a blood donation before, Goodman said the process did leave him a bit weak, although he participated in a swim meet for WKU within a week following the procedure, he said.

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WKU plans bone marrow registry drive

LOS ANGELES (KABC) --

While Roeuy Garay was pregnant with her daughter Brook, she felt weak and an unusual back pain. Her doctors thought it was just part of the pregnancy. But a few weeks after her delivery, her fiance Joseph knew something was seriously wrong.

"I passed out and he took me to urgent care and said, 'Something is wrong with her. It's got to be her kidney or something. We need to do some blood tests,'" Roeuy said.

A bone biopsy and body scan revealed a diagnosis the 36-year-old Corona mother of four could not believe.

"They came in and said, 'Yeah, you have multiple myeloma, and it's about between 70 to 80 percent of your blood is cancer,'" she said.

Multiple myeloma, also called Kahler's disease, is a cancer of the plasma cells, which are in the blood stream. Her best chance at survival is a bone marrow transplant.

None of her siblings were a match and being of Cambodian descent, Roeuy's odds of finding a match are very slim. It's a fact that is hard to hide from her children.

There are 12 million people in the National Bone Marrow Registry, but only 7 percent are Asian and only a small fraction of that are Southeast Asian.

Dr. Elizabeth Budde with City of Hope National Medical Center in Duarte said it only takes a cheek swab to be part of the registry and donating stem cells can be as easy as donating blood.

For now, Roeuy is in remission so she needs a match as soon as possible.

Excerpt from:
Corona mother of 4 seeks bone marrow match

Children's Healthcare of Atlanta and Winship Cancer Institute target graft-versus-host-disease through immune cell therapy

An innovative clinical trial using the science of "personalized" cellular therapy has begun enrolling children and adults suffering from graft-versus-host-disease (GVHD), a life-threatening complication of bone marrow transplantation in which donor immune lymphocytes attack the organs of the bone marrow transplant recipient.

Bone marrow transplantation is performed in some patients with cancers of the blood or bone marrow, including multiple myeloma and leukemia, as well as in some patients with sickle cell disease, thallesemia, aplastic anemia and inherited immune deficiency.

Physician-researchers at the Aflac Cancer and Blood Disorders Center at Children's Healthcare of Atlanta and Winship Cancer Institute of Emory University will harvest bone marrow cells from children and adults (12 to 65 years) with GVHD. Those cells will be used to manufacture large numbers of personalized autologous marrow mesenchymal stromal cells in the Emory Personalized Immunotherapy Center (EPIC), a dedicated pharmaceutical grade facility located within Emory University Hospital.

By infusing large doses of these personalized bone marrow cells into bone marrow transplant recipients, the physician-researchers aim to target sites of inflammation, potentially reducing GVHD in the intestine, liver and skin and limiting long-term organ damage.

Muna Qayed, MD, MSc. a pediatric hematologist-oncologist at the Aflac Cancer Center at Children's and an assistant professor at Emory School of Medicine, will lead the clinical trial, which is offered only in Atlanta and is supported by CURE Childhood Cancer.

"For patients with GVHD who do not respond to first line therapy, there is no reliable cure, and GVHD can be life threatening or a life-long disabling condition," says Dr. Qayed, "But we hope that through our clinical research, we will be able to significantly impact the course of this disease."

"This trial represents one of the most innovative clinical trials to arise from the growing partnership between the Hematology & Medical Oncology and Pediatrics departments at Emory School of Medicine, Emory Healthcare, and Children's Healthcare of Atlanta," says William (Bill) G. Woods, MD, director of the Aflac Cancer Center.

Blood and bone marrow cells have been used for more than a quarter century to treat life-threatening hematological conditions and are now used in established therapies worldwide. The current clinical trial will use mesenchymal stromal cells from the bone marrow. These cells have been studied more recently for treatment of a wide array of diseases, including autoimmune diseases.

"The beginning of this clinical trial is the culmination of two years' of collaborative effort by a terrific multidisciplinary team at Emory Healthcare, Children's Healthcare of Atlanta and the Aflac Cancer Center," says Edmund Waller, MD, director of Winship's Bone Marrow and Stem Cell Transplant Program and investigator on this trial.

More here:
Clinical trial uses patients' own cells for treatment after bone marrow transplant

This Saturday when the University of Kentucky basketball team faces off with the University of Wisconsin in the NCAA tournament semi-finals, die-hard Kentucky fan Scott Logdon may think twice about rooting against the Wisconsin Badgers.

Nearly two years ago, Logdon was given a life-saving donation of stem cells that helped combat his acute myeloid leukemia. The donor of those cells turned out to be 22-year-old Chris Wirz, a student at the University of Wisconsin.

Logdon, 44, learned the identity of his donor last April, more than a year after the stem cell treatment and just days after the University of Kentucky squeaked past the University of Wisconsin at the NCAA semi-finals with a score of 74 to 73.

Logdon remembers feeling mixed emotions when the Kentucky wildcats won. Later, when he found out about his donor, he joked, That must have been the Badger blood in me.

Courtesy Angela Logdon

PHOTO: Chris Wirz gave life saving stem cells to Scott Logdon, who was suffering from leukemia.

Logdons ordeal started in the fall of 2012, when he was diagnosed with acute myeloid leukemia after mistaking early symptoms for strep throat. Logdon said his doctors told him chemotherapy could only keep the cancer at bay. A full stem cell transplant would be needed to cure him of the deadly disease.

Logdons doctors hoped one of his two siblings might be a match, but neither was able to donate. Longons family and community rallied in the small town of Saldasia, Kentucky, and registered over 120 people who would be willing to donate stem cells or bone marrow.

But no one who registered was a good match for Logdon.

[The doctors] went to the national bone marrow registry to try and find the match, the father of four said. I had to go back to the hospital every 30 days [for] maintenance chemo; it was a very long wait.

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Kentucky Fan Gets Life-Saving Stem Cell Donation From Univ. of Wisconsin Student

CHICAGO, April 2, 2015 /PRNewswire-USNewswire/ --After surgery failed to relieve extreme pain caused by peripheral artery disease in her right leg, Denise Hopkins-Glover was facing a bleak outlook she might never walk again.

"They said they had done everything they could and the only option was amputation of the right leg from the knee down," she said.

Undeterred, Hopkins-Glover chose to participate in an investigational trial at Northwestern Medicine called the MOBILE Study, which makes use of a device called the MarrowStim PAD Kit. In the trial, a randomized group of patients receive injections of their own stem cells retrieved through a bone marrow extraction to try to restore blood flow to the leg.

"MarrowStim offers a new approach for patients with a grim prognosis," said principal investigator Melina Kibbe, MD, a vascular surgeon at Northwestern Memorial Hospital and Edward G. Elcock Professor of Surgical Research at Northwestern University Feinberg School of Medicine. "We're pleased to be part of this national trial to see if there might be a significant chance of improving treatment for patients with few choices left for treatment."

Hopkins-Glover, a 55-year-old grandmother of two, suffers from peripheral artery disease (PAD), a condition affecting 20 percent of Americans where cholesterol and fatty plaque pool in blood vessels, restricting blood flow to the limbs. In its most severe form, PAD causes critical limb ischemia (CLI), which can cause pain in resting legs, sores or ulcers that don't heal, thickening of the toenails and gangrene, which can eventually lead to amputation.

The Chicago resident worked as a phlebotomist before her PAD worsened, and had to stop working because she could no longer walk or stand for extended stretches of time.

"I can walk only a certain distance before the circulation stops getting to certain parts of the body," she said. "It feels like a terrible leg cramp, like a jabbing, stabbing pain."

During the procedure, patients are put under general anesthesia as bone marrow is harvested through a needle from the hip. The bone marrow is loaded into the MarrowStim PAD Kit, an investigational device, where it is processed in a centrifuge. This spinning separates the marrow into different layers, with one of the layers containing the stem cells. Immediately following the separation, the stem cells are injected in 40 different spots on the affected limb, delivering concentrated bone marrow in each one. The entire procedure takes about 90 minutes. Patients follow up with investigators at different intervals in the year following the injections.

Karen Ho, MD, a Northwestern Medicine vascular surgeon who is also an investigator on the trial, said the exact reason the bone marrow injections might help chronic limb ischemia is still a mystery.

"Nobody really knows the exact mechanism," said Dr. Ho, who is also an assistant professor in vascular surgery at Feinberg. "The idea is that it might improve or enhance new blood vessels in the calf."

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Northwestern Medicine Investigates Using Stem Cells to Save Limbs from Amputation

Low doses of the anti-cancer drug imatinib can spur the bone marrow to produce more innate immune cells to fight against bacterial infections, Emory researchers have found.

The results were published March 30, 2015 in the journal PLOS Pathogens.

The findings suggest imatinib, known commercially as Gleevec , or related drugs could help doctors treat a wide variety of infections, including those that are resistant to antibiotics, or in patients who have weakened immune systems. The research was performed in mice and on human bone marrow cells in vitro, but provides information on how to dose imatinib for new clinical applications.

"We think that low doses of imatinib are mimicking 'emergency hematopoiesis,' a normal early response to infection," says senior author Daniel Kalman, PhD, professor of pathology and laboratory medicine at Emory University School of Medicine.

Imatinib, is an example of a "targeted therapy" against certain types of cancer. It,blocks tyrosine kinase enzymes, which are dysregulated in cancers such as chronic myelogenous leukemia and gastrointestinal stromal tumors.

Imatinib also inhibits normal forms of these enzymes that are found in healthy cells. Several pathogens - both bacteria and viruses - exploit these enzymes as they transit into, through, or out of human cells. Researchers have previously found that imatinib or related drugs can inhibit infection of cells by pathogens that are very different from each other, including tuberculosis bacteria and Ebola virus.

In the new PLOS Pathogens paper, Emory investigators show that imatinib can push the immune system to combat a variety of bacteria, even those that do not exploit Abl enzymes. The drug does so by stimulating the bone marrow to make more neutrophils and macrophages, immune cells that are important for resisting bacterial infection.

"This was surprising because there are reports that imatinib can be immunosuppressive in some patients," Kalman says. "Our data suggest that at sub-clinical doses, imatinib can stimulate bone marrow stem cells to produce several types of myeloid cells, such as neutrophils and macrophages, and trigger their exodus from the bone marrow. However, higher doses appear to inhibit this process."

The authors note that imatinib appears to stimulate several types of white blood cells, which may provide a limit on inflammation, rather than increasing neutrophils only, which can be harmful. The authors go on to suggest that imatinib or related drugs may be useful in treating a variety of infections in patients whose immune system is compromised, such as those receiving chemotherapy for cancer.

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Original post:
Anticancer drug can spur immune system to fight infection

Scott Logdon is a die-hard University of Kentucky basketball fan, but he can't deny he's got some Wisconsin blood in him -- literally.

When the father of four was being treated for high-risk leukemia at UK in 2013, 20-year-old University of Wisconsin student Chris Wirz anonymously donated bone marrow stem cells to him. The two men first spoke just after the Wildcats bested the Badgers during last year's NCAA Final Four, and basketball was a frequent topic of conversation as their friendship grew.

While each will be rooting for his own team during this Saturday's Final Four rematch, both say they have a soft spot for the other team.

"I've stayed true to UK," said Logdon, 44, of Salvisa, Ky. "But when I talked to Chris for the first time I told him, 'That's why I felt so bad when we beat you: I've got Badger blood in me!"'

Wirz, who lives three blocks from where the Badgers play, hopes Wisconsin wins this year, and has even predicted an upset in his basketball bracket. "Who doesn't want to root for the underdog?" he said.

But he plans to send a text of congratulations if Logdon's team wins -- since their connection is much deeper than basketball rivalry.

"We're literally working off the same immune system," said Wirz, now 22 and a University of Wisconsin senior. "This has been one of the most emotionally overwhelming experiences of my life, realizing how important he is to his family and his community and seeing the hole that would've been left by him."

A dire diagnosis

Logdon, chief deputy at Woodford County Detention Center in Versailles, Ky., and a youth minister in his church, recalled playing basketball with teenagers just a few nights before going to the doctor for what his wife, Angela, initially thought was strep.

But tests showed he had acute myeloid leukemia, a blood cancer estimated by the American Cancer Society to have stricken 18,860 Americans last year and killed about 10,460, mostly adults.

Excerpt from:
Blood ties: Ky. basketball fan gets Wisconsin assist

Costa Mesa and Sherman Oaks, California (PRWEB) March 31, 2015

The Irvine Stem Cell Treatment Center announces a series of free public seminars on the use of adult stem cells for various degenerative and inflammatory conditions. They will be provided by Dr. Thomas A. Gionis, Surgeon-in-Chief.

The seminars will be held on Wednesday, April 8, 2015, at 11:00 am, 1:00 pm and 3:00 pm at Ayres Hotel & Suites Costa Mesa/Newport Beach, 325 Bristol Street, Costa Mesa, CA 92626; and Wednesday, April 22, 2015, at 11:00 am, 1:00 pm and 3:00 pm at Hampton Inn, 5638 Sepulveda Blvd., Sherman Oaks, CA 91411. Please RSVP at (949) 679-3889.

The Irvine Stem Cell Treatment Center (Irvine and Westlake), along with sister affiliates, the Miami Stem Cell Treatment Center (Miami; Boca Raton; Orlando; The Villages; Sarasota, Florida) and the Manhattan Regenerative Medicine Medical Group (Manhattan, New York), abide by approved investigational protocols using adult adipose derived stem cells (ADSCs) which can be deployed to improve patients quality of life for a number of chronic, degenerative and inflammatory conditions and diseases. ADSCs are taken from the patients own adipose (fat) tissue (found within a cellular mixture called stromal vascular fraction (SVF)). ADSCs are exceptionally abundant in adipose tissue. The adipose tissue is obtained from the patient during a 15 minute mini-liposuction performed under local anesthesia in the doctors office. SVF is a protein-rich solution containing mononuclear cell lines (predominantly adult autologous mesenchymal stem cells), macrophage cells, endothelial cells, red blood cells, and important Growth Factors that facilitate the stem cell process and promote their activity.

ADSCs are the bodys natural healing cells - they are recruited by chemical signals emitted by damaged tissues to repair and regenerate the bodys injured cells. The Irvine Stem Cell Treatment Center only uses Adult Autologous Stem Cells from a persons own fat No embryonic stem cells are used; and No bone marrow stem cells are used. Current areas of study include: Emphysema, COPD, Asthma, Heart Failure, Heart Attack, Parkinsons Disease, Stroke, Traumatic Brain Injury, Lou Gehrigs Disease, Multiple Sclerosis, Lupus, Rheumatoid Arthritis, Crohns Disease, Muscular Dystrophy, Inflammatory Myopathies, and Degenerative Orthopedic Joint Conditions (Knee, Shoulder, Hip, Spine). For more information, or if someone thinks they may be a candidate for one of the adult stem cell protocols offered by the Irvine Stem Cell Treatment Center, they may contact Dr. Gionis directly at (949) 679-3889, or see a complete list of the Centers study areas at: http://www.IrvineStemCellsUSA.com.

Also, you can listen and call into our new radio show, The Stem Cell Show, hosted by Dr. Gionis on TalkRadio 790 AM KABC, Sundays @ 4pm PST, or worldwide on KABC.com ("Listen Live" at 4pm PST) or the KABC app available on the App Store or Google Play.

About the Irvine Stem Cell Treatment Center: The Irvine Stem Cell Treatment Center, along with sister affiliates, the Miami Stem Cell Treatment Center and the Manhattan Regenerative Medicine Medical Group, is an affiliate of the California Stem Cell Treatment Center / Cell Surgical Network (CSN); we are located in Irvine and Westlake, California. We provide care for people suffering from diseases that may be alleviated by access to adult stem cell based regenerative treatment. We utilize a fat transfer surgical technology to isolate and implant the patients own stem cells from a small quantity of fat harvested by a mini-liposuction on the same day. The investigational protocols utilized by the Irvine Stem Cell Treatment Center have been reviewed and approved by an IRB (Institutional Review Board) which is registered with the U.S. Department of Health, Office of Human Research Protection (OHRP); and our studies are registered with Clinicaltrials.gov, a service of the U.S. National Institutes of Health (NIH). For more information, visit our websites: http://www.IrvineStemCellsUSA.com, http://www.MiamiStemCellsUSA.com, or http://www.NYStemCellsUSA.com; http://www.TheStemCellShow.com.

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The Irvine Stem Cell Treatment Center Announces Adult Stem Cell Public Seminars in Costa Mesa and Sherman Oaks ...

Lung diseases like emphysema and pulmonary fibrosis are common among people with malfunctioning telomeres, the "caps" or ends of chromosomes. Now, researchers from Johns Hopkins say they have discovered what goes wrong and why.

Mary Armanios, M.D., an associate professor of oncology at the Johns Hopkins University School of Medicine., and her colleagues report that some stem cells vital to lung cell oxygenation undergo premature aging -- and stop dividing and proliferating -- when their telomeres are defective. The stem cells are those in the alveoli, the tiny air exchange sacs where blood takes up oxygen.

In studies of these isolated stem cells and in mice, Armanios' team discovered that dormant or senescent stem cells send out signals that recruit immune molecules to the lungs and cause the severe inflammation that is also a hallmark of emphysema and related lung diseases.

Until now, Armanios says, researchers and clinicians have thought that "inflammation alone is what drives these lung diseases and have based therapy on anti-inflammatory drugs for the last 30 years."

But the new discoveries, reported March 30 in Proceedings of the National Academy of Sciences, suggest instead that "if it's premature aging of the stem cells driving this, nothing will really get better if you don't fix that problem," Armanios says.

Acknowledging that there are no current ways to treat or replace damaged lung stem cells, Armanios says that knowing the source of the problem can redirect research efforts. "It's a new challenge that begins with the questions of whether we take on the effort to fix this defect in the cells, or try to replace the cells," she adds.

Armanios and her team say their study also found that this telomere-driven defect leaves mice extremely vulnerable to anticancer drugs like bleomycin or busulfan that are toxic to the lungs. The drugs and infectious agents like viruses kill off the cells that line the lung's air sacs. In cases of telomere dysfunction, Armanios explains, the lung stem cells can't divide and replenish these destroyed cells.

When the researchers gave these drugs to 11 mice with the lung stem cell defect, all became severely ill and died within a month.

This finding could shed light on why "sometimes people with short telomeres may have no signs of pulmonary disease whatsoever, but when they're exposed to an acute infection or to certain drugs, they develop respiratory failure," says Armanios. "We don't think anyone has ever before linked this phenomenon to stem cell failure or senescence."

In their study, the researchers genetically engineered mice to have a telomere defect that impaired the telomeres in just the lung stem cells in the alveolar epithelium, the layer of cells that lines the air sacs. "In bone marrow or other compartments, when stem cells have short telomeres, or when they age, they just die out," Armanios says. "But we found that instead, these alveolar cells just linger in the senescent stage."

Continued here:
Premature aging of stem cell telomeres, not inflammation, linked to emphysema

An injection of a patient's bone marrow stem cells during rotator cuff surgery significantly improved healing and tendon durability, according to a study presented today at the 2015 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS).

Each year in the U.S., more than 2 million people have rotator cuff surgery to re-attach their shoulder tendon to the head of the humerus (upper arm bone). Rotator cuff tears can occur during a fall or when lifting an extremely heavy object; however, most tears are the result of aging and overuse.

The French study, of which a portion appeared in the September 2014 issue of International Orthopaedics, included 90 patients who underwent rotator cuff surgery. Researchers tried to make the two groups as equivalent as possible based on rotator cuff tear size, tendon rupture location, dominate shoulder, gender and age. Forty-five of the patients received injections of bone marrow concentrate (BMC) mesenchymal stem cells (MSCs) at the surgical site, and 45 had their rotator cuff repaired or reattached without MSCs.

Patient ultrasound images were obtained each month following surgery for 24 months. In addition, MRI images were obtained of patient shoulders at three and six months following surgery, and at one year, two years, and 10 years following surgery.

At six months, all 45 of the patients who received MSCs had healed rotator cuff tendons, compared to 30 (67 percent) of the patients who did not receive MSCs. The use of bone marrow concentrate also prevented further ruptures or retears. At 10 years after surgery, intact rotator cuffs were found in 39 (87 percent) of the MSC patients, but just 20 (44 percent) of the non-MSC patients.

In addition, "some retears or new tears occurred after one year," said Philippe Hernigou, MD, an orthopaedic surgeon at the University of Paris and lead study author. "These retears were more frequently associated with the control group patients who were not treated with MSCs.

"While the risk of a retear after arthroscopic repair of the rotator cuff has been well documented, publications with long-term follow-up (more than three years) are relatively limited," said Dr. Hernigou. "Many patients undergoing rotator cuff repair surgery show advanced degeneration of the tendons, which are thinner and atrophic (more likely to degenerate), probably explaining why negative results are so often reported in the literature, with frequent post-operative complications, especially retear. Observations in the MSC treatment group support the potential that MSC treatment has both a short-term and long-term benefit in reducing the rate of tendon retear."

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The above story is based on materials provided by American Academy of Orthopaedic Surgeons. Note: Materials may be edited for content and length.

Link:
Stem cells may improve tendon healing, reduce retear risk in rotator cuff surgery

LAS VEGAS, March 26, 2015 /PRNewswire-USNewswire/ -- An injection of a patient's bone marrow stem cells during rotator cuff surgery significantly improved healing and tendon durability, according to a study presented today at the 2015 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS).

Each year in the U.S., more than 2 million people have rotator cuff surgery to re-attach their shoulder tendon to the head of the humerus (upper arm bone). Rotator cuff tears can occur during a fall or when lifting an extremely heavy object; however, most tears are the result of aging and overuse.

The French study, of which a portion appeared in the September 2014 issue of International Orthopaedics, included 90 patients who underwent rotator cuff surgery. Researchers tried to make the two groups as equivalent as possible based on rotator cuff tear size, tendon rupture location, dominate shoulder, gender and age. Forty-five of the patients received injections of bone marrow concentrate (BMC) mesenchymal stem cells (MSCs) at the surgical site, and 45 had their rotator cuff repaired or reattached without MSCs.

Patient ultrasound images were obtained each month following surgery for 24 months. In addition, MRI images were obtained of patient shoulders at three and six months following surgery, and at one year, two years, and 10 years following surgery.

At six months, all 45 of the patients who received MSCs had healed rotator cuff tendons, compared to 30 (67 percent) of the patients who did not receive MSCs. The use of bone marrow concentrate also prevented further ruptures or retears. At 10 years after surgery, intact rotator cuffs were found in 39 (87 percent) of the MSC patients, but just 20 (44 percent) of the non-MSC patients.

In addition, "some retears or new tears occurred after one year," said Philippe Hernigou, MD, an orthopaedic surgeon at the University of Paris and lead study author. "These retears were more frequently associated with the control group patients who were not treated with MSCs.

"While the risk of a retear after arthroscopic repair of the rotator cuff has been well documented, publications with long-term follow-up (more than three years) are relatively limited," said Dr. Hernigou. "Many patients undergoing rotator cuff repair surgery show advanced degeneration of the tendons, which are thinner and atrophic (more likely to degenerate), probably explaining why negative results are so often reported in the literature, with frequent post-operative complications, especially retear. Observations in the MSC treatment group support the potential that MSC treatment has both a short-term and long-term benefit in reducing the rate of tendon retear."

Study abstract

View 2015 AAOS Annual Meeting disclosure statements

About AAOS

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Stem cells may significantly improve tendon healing, reduce retear risk in rotator cuff surgery

Tampa, FL. (PRWEB) March 26, 2015

This month, the Lung Institute has started treating people suffering from chronic lung diseases with stem cells extracted from their bone marrow. This treatment protocol is added to the two other treatment options offered by the Lung Institute: venous (blood-derived) and adipose (fat-derived) stem cell therapy.

The bone marrow and adipose treatments offer the highest concentration of stem cells and allow for the cells to be reintroduced directly into the lungs through a nebulizer. Given this added benefit, most patients in the past opted to receive the adipose treatment over venous. However, many patients have other medical conditions that preclude them from choosing the adipose treatment. Since the number of stem cells harvested from a bone marrow procedure matches that of the adipose procedure, patients that have previously only qualified for the venous procedure are now eligible for a treatment option that produces the highest chance of success.

Patients are often surprised by the simplicity of these minimally invasive procedures, but with cutting-edge technology and the patient-centric clinical team at the Lung Institute, patients can rest assured that they are in good hands. Throughout the entire treatment process, patients have the opportunity to get any questions immediately answered by our knowledgeable medical staff. The Lung Institute clinical team remains in contact with patients after treatment and works together with the patients physician and pulmonologist to create a strong support system for the patient.

About the Lung Institute At the Lung Institute, we are changing the lives of hundreds of people across the nation through the innovative technology of regenerative medicine. We are committed to providing patients a more effective way to address pulmonary conditions and improve their quality of life. Our physicians, through their designated practices, have gained worldwide recognition for the successful application of revolutionary minimally invasive stem cell therapies. With over a century of combined medical experience, our doctors have established a patient experience designed with the highest concern for patient safety and quality of care. For more information, visit our website at LungInstitute.com, like us on Facebook, follow us on Twitter or call us today at (855) 313-1149.

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Lung Institute Announces New Treatment with Bone Marrow