marrow

Spleen may be source of versatile stem cells

...ood, the spleen is turnedon to supplement the bone marrow in replenishing your blood supply. Wemay find that the spleen kicks in to help with many more biologicalemergencies. What has been considered a practically unnecessary organmay actually provide critical healing cells," says Faustman, anassociate prof...

Emory Study Tests Bone Marrow Stem Cells to Improve Circulation in Legs

...al trial using stem cells generatedwithin the bone marrow to grow new blood vessels that could improvecircul...ulating factors (growth factors), to prod the bone marrow torelease a type of stem cells called endothelial progenitor cells, whichare used by the body to for...

Placenta Is A Rich Source Of Blood Stem Cells

...he laboratory, so they must be harvested from bone marrow by needle aspiration, a painful procedure, or coaxed into the blood and then collected. Both methods yield only a limited number of blood stem cells. For more than a decade, scientists have believed that blood stem cells are made only in the embryo ...

Potential Cure for Lymphoma in HIV patients

...fused back into the patient to repopulate the bone marrow wiped outby the chemotherapy.Before the transplant, patients were given one of two conditioningregimens, either high dose chemotherapy alone or in combination withradiation therapy, to destroy the cancerous cells. Most (17 patientsversus three) recei...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...blood could help physicians predict whether a bone marrow stem cell transplant will successfully restore a population of infection-fighting cells called T lymphocytes in a child. This research, by investigators at St. Jude Children's Research Hospital, is published in the journal Blood. This finding could ...

Discovery Could Lead To Novel Approaches In HIV Treatment

...could be alsoapplicable to patients requiring bone marrow transplantation to curetheir cancer....

Scientists identify new model Of NK cell development

...from a common source ?progenitor cells in the bone marrow ?they take different paths in developing into full...d much more frequently in lymph nodes than in bone marrow or circulating blood. In other words, they had a hunch traditional thinking about the origin of hum...

The very unexpected life and death of a leukemic cell

...is an incurable disease in which cells in the bone marrow grow and survive to the point where they become abnormal and malignant (leukemic). The progression of the disease is slow and there has been a lack of information regarding the rate of production of CLL cells, and the time-course of their death. For...

White blood cell waste disposal system plays critical regulatory role

...lls that are constantly being produced in the bone marrow and released into the blood stream where they migrate out of the blood and roam the body in search of potentially harmful foreign substances. Neutrophils have a short lifespan and often die via a programmed cell death pathway called apoptosis within ...

Single stem cells from bone heal a broken heart

..., human stem cell population derived from the bone marrow that has the capacity to induce generation of new ...anded novel multipotent stem cells from human bone marrow regenerate myocardium after myocardial infarction, JCI ...

Multi-purpose protein regulates new protein synthesis and immune cell development

...s from IRE1 knock-out embryos into mice whose bone marrow had been destroyed by radiation. He found that stem cells deficient in IRE1 could reconstitute all types of blood and immune cells in the transplanted mice, but their mature B lymphocytes were defective. Without IRE1, lymphocytes don't develop a B ce...

Protein That Promotes Survival Of Stem Cells Might Be Key To Poor Leukemia Prognosis

...ed anemia and had severely reduced numbers of bone marrow (BM) cells, such as HSCs and progenitor cells. This was strong evidence that Mcl-1 was needed to maintain these cell populations. The team also demonstrated that BM cells lacking Mcl-1 did not multiply when removed from mice and cultured in the labo...

Infants With Rare Genetic Disease Saved by Cord Blood Stem Cells

...tas (afterbirth) following child birth. Adult bone marrow must be harvested from living donors through an in..., cord blood cells are less mature than adult bone marrow cells and thus do not need to perfectly match the patient's immune-related blood proteins, called an...

White Blood Cell 'Waste Disposal' System Plays Critical Regulatory Role

...lls that are constantly being produced in the bone marrow and released into the blood stream where they migrate out of the blood and roam the body in search of potentially harmful foreign substances. Neutrophils have a short lifespan and often die via a programmed cell death pathway called apoptosis within ...

Infants with Rare Genetic Disease Saved By Cord Blood Stem Cells

...tas (afterbirth) following child birth. Adult bone marrow must be harvested from living donors through an in..., cord blood cells are less mature than adult bone marrow cells and thus do not need to perfectly match the patient's immune-related blood proteins, called an...

Breakthrough isolating embryo-quality stem cells from blood

...l research requires millions of these cells. Bone marrow donors are routinely treated with a drug known as G-CSF which "mobilises" stem cells from the bone marrow into the blood. After G-CSF treatment the donor's blood is passed through a centrifuge and back into...

Researchers pioneer new gene therapy technique using natural repair process

...ly shortened by systemic infection, and while bone marrow transplants can be used to treat the disease, they are not always successful. "SCID is ideal for this sort of therapy because you only need to correct the defect in a small number of immune cells to fix the problem," said Dr. Porteus, assistant prof...

Researchers Closer To Helping Hearing-Impaired Using Stem Cells

... the day when a profoundly deaf patient’s own bone marrow cells could be used to let him or her hear the wor...n the laboratory, stem cells taken from adult bone marrow into cells with many of the characteristics of sensory nerve cells -- neurons -- found in the ear. T...

Stem cells in bone marrow replenish mouse ovaries

...eviously unrecognized stem cells found in the bone marrow and blood of mice can "restock" a depleted ovary w...ll progenitors, putative stem cells, in mouse bone marrow and blood. In addition, the researchers also found these markers in human bone marrow and blood. Re...

Circulating stem cells play small role in lung repair

...f reparative lung stem cell originated in the bone marrow of the transplant recipient. "It's possible in th...hromosomes. Cells produced by the recipient's bone marrow have an X and a Y (male) chromosome. Lung transplant recipients are vulnerable to pulmonary injury ...

Candida albicans Genome Fully Annotated

...f reparative lung stem cell originated in the bone marrow of the transplant recipient. "It's possible in th...hromosomes. Cells produced by the recipient's bone marrow have an X and a Y (male) chromosome. Lung transplant recipients are vulnerable to pulmonary injury ...

Stem cell therapy successfully treats heart attack in animals

...nths, stem cells harvested from another pig's bone marrow and injected into the animal's damaged heart resto...ck stem cells from sources other than itself. Bone marrow adult stem cells do not have the same potential to develop into different organ tissues, as do embry...

New method shows it is possible to grow bone for grafts within a patient's body

...h a layer of special pluripotent cells which, like marrow cells, are capable of transforming into the different types of skeletal tissue. So Shastri and his collaborators decided to create the bioreactor space just under this outer layer. They created the space by making a tiny hole in the periosteum and i...

VCU study shows hormone-like molecule kills cells that cause inflammation in allergic disease

... portion of the study, researchers used mouse bone marrow cells containing the stem cells that give rise to ...earchers tried to culture mast cells from the bone marrow of these mice, the mast cells died. Furthermore, a separate strain of mice with the same mutation ...

Climate model links higher temperatures to prehistoric extinction

... portion of the study, researchers used mouse bone marrow cells containing the stem cells that give rise to ...earchers tried to culture mast cells from the bone marrow of these mice, the mast cells died. Furthermore, a separate strain of mice with the same mutation ...

Most common lung cancers may begin in newly discovered cells

...scientists can inject the stem cells into the bone marrow of an irradiated mouse and replace the entire blood system, the basis of bone marrow transplantation. Solid tissue is trickier. Bender Kim and her colleagues do not yet know the optimal...

For first time, brain cells generated in a dish

...information for clinical applications such as bone marrow transplants. Now we have a tool to do exactly the same thing." By watching the cells perform, scientists can make judgments and influence the capacity of the cells to generate specific neurons. "As far as regenerating parts of the brain that have d...

Malfunctioning bone marrow cells sabotage nerve cells in diabetes

Malfunctioning bone marrow cells that produce insulin appear to cause a dange...d with the disease. "These insulin-producing bone marrow cells are like terrorists that infiltrate the nerve-cell populations," he said. They produce protein...

AACR Favors 'full spectrum of stem cell research biology'

...pment of human tissues, including cancers. # Bone marrow stem cells already have demonstrated their value in replenishing blood and immune systems damaged by cancer or cancer treatment. Research on human embryonic stem cells may extend this promise by providing a transplantable cell source that avoids the ...

Researchers make 'embryonic-like' stem cells from umbilical cord blood

...d on so-called adult cells found in blood and bone marrow from birth onwards or cells grown from embryos. The new type detected by the team harnesses the benefits of both. "We have found a unique group of cells that bring together the essential qualities of both types of stem cells for the first time," Dr M...

Insight into the processes of 'positive' and 'negative' learners

...d on so-called adult cells found in blood and bone marrow from birth onwards or cells grown from embryos. The new type detected by the team harnesses the benefits of both. "We have found a unique group of cells that bring together the essential qualities of both types of stem cells for the first time," Dr M...

Researchers propose measures to curb lion attacks in Tanzania

...d on so-called adult cells found in blood and bone marrow from birth onwards or cells grown from embryos. The new type detected by the team harnesses the benefits of both. "We have found a unique group of cells that bring together the essential qualities of both types of stem cells for the first time," Dr M...

Stem cells bring fast direct improvement, without differentiation, in acute renal failure

...ecting stem cells similar to the type used in bone marrow transplants is "highly renoprotective, showing alm...Europe next year in patients with complicated bone marrow transplants, a setting where such stem cells already are approved for use. If successful, a compassi...

Genomics researchers discover protein deficit that causes drug toxicity

...dard dose of thiopurine drugs can cause fatal bone marrow destruction. Though Mayo Clinic researchers described this genetically variable response and the danger it presents over 20 years ago, no one had been able to explain the cellular mechanism behind it. ...

Genes linked to treatment resistance in children with leukemia

..., a recurrence of the cancer in the blood and bone marrow and the most common reason for treatment failure in childhood ALL. This risk was further increased if the child also had a TYMS 3/3 genotype. No genotype was associated with hematological relapse among patients in the lower-risk arm of the study. Th...

Fish and chips: A fast track to understanding blood development

...roximately 200 billion new blood cells in the bone marrow of adults. To maintain their numbers over time, blood stem cells also can divide and give rise to new blood stem cells through a process called self-renewal. What was not fully understood is which genes control the self-renewal and differentiation pr...

Tissue regeneration operates differently than expected

...e throughout an organism's life. For example, bone marrow stem cells provide for the replenishment of short-...f organ cell to another. If that is the case, bone marrow cells would be able to change into lots of different kinds of tissue cells ?for example, skeletal mu...

U-M scientists discover identifying markers for primitive blood-forming stem cells

...tipotent progenitor cells and fully developed bone marrow cells. They selected genes that were expressed at ...+ and CD150- cells into laboratory mice whose bone marrow had been destroyed by lethal doses of radiation. Healthy bone marrow was restored in six of six mice...

'License to kill' enables powerful immune attack cells in mice

...t viral infections and patients' responses to bone marrow transplants. The findings will appear in the Augus..." Yokoyama says. "It could also help us match bone marrow transplants in a way that increases the immune system's ability to fight off a relapse of the leukem...

Research casts doubt on circulating stem cells

Adult stem cells taken from bone marrow are the "shooting stars" of their field. Many rese...al PNAS (www.pnas.org , PNAS Early Edition). Bone marrow constantly produces stem cells from which, among other things, the white and red blood corpuscles ar...

Bone marrow stem cells may heal hearts even years after heart attacks

..., in 18 patients given infusions of their own bone marrow stem cells up to eight years after a heart attack,...ter a heart attack. The researchers harvested bone marrow from the hip bones of the patients, so there was no threat of transplant rejection. After processing...

A little telomerase isn't enough

... and people with the condition, stem cells in bone marrow that replenish the blood cells and those in the di...t for people with dyskeratosis congenita is a bone marrow transplant from an unaffected family member. But the team's new findings in mice suggest that the fa...

Pillows - a hot bed of fungal spores

...ng infectious cause of death in leukaemia and bone marrow transplant patients. Fungi also exacerbate asthma in adults. The researchers dissected both feather and synthetic samples and identified several thousand spores of fungus per gram of used pillow - more than a million spores per pillow. Fungal cont...

Clinical trial to test stem cell approach for children with brain injury

...injury with stem cells derived from their own bone marrow starting early next year at The University of Texa...ld in the study. If permission is granted, bone marrow will be extracted from the child's hip and then processed to derive two types of progenitor stem cel...

Cells from amniotic fluid used to tissue-engineer a new trachea

...has also used cells from the ear and from the bone marrow to derive cartilage cells, amniotic fluid is much more readily available. Millions of pregnant women elect to have amniotic fluid drawn to test for chromosome defects, the procedure known as amniocentesis. And when a prenatal ultrasound exam reveals ...

Compound from marine bacteria shows potential as multiple myeloma therapy

...yeloma is a currently incurable cancer of the bone marrow that causes a plunge in the production of vital red and white blood cells. Although relatively rare, it is the second most common type of blood cancer and accounts for 11,000 deaths annually in the United States. Bortezomib, approved by the Food and ...

PET imaging reveals the immune system at work

...s had been suppressed and then replaced using bone marrow from another mouse. The donor marrow included cells with genes engineered to be detectable by PET. By inducing cancer in the mice, Witte ...

Jefferson biologist coaxing human embryonic stem cells to make dopamine with simpler, faster method

...s had been suppressed and then replaced using bone marrow from another mouse. The donor marrow included cells with genes engineered to be detectable by PET. By inducing cancer in the mice, Witte ...

From one cell, many possible cures

...that will allow stem cells derived from adult bone marrow to be grown in sufficient quantities to permit far... medical procedure in which a small amount of bone marrow is extracted from his or her pelvic bone." Within that extracted bone marrow, only about one in eve...

Feds give researchers ok for safety test of adult stem cells in patients with heart disease

...ate the safety of using adult stem cells from bone marrow to treat chronic ischemia, a serious form of heart... of the procedure. It will involve injecting bone marrow stem cells at varying doses into the coronary arteries of patients suffering chronic ischemic corona...

Forgotten by evolution?

...l stem cells which had been isolated from the bone marrow of mice. What was particularly special about the process they used was that they did not add growth factors to the culture medium; the goal was to prevent the cells from differentiating prematurely. By doing so, the scientists discovered that the two...

Stem cell mobilization therapy appears to be ineffective in repairing damage caused by heart attack

Therapy that involved bone marrow stem cells did not improve cardiac function in pat...rowth-factor protein) induces mobilization of bone marrow stem cells, according to background information in the article. Dietlind Zohlnhöfer, M.D., of the T...

Stem cells from muscles can repair cartilage

..., notes that although stem cells derived from bone marrow have been extensively investigated for the repair of cartilage defects, the current study is the first to investigate using enriched stem cells from muscle. The author states that the results are encouraging, especially the successful use of fibrin g...

Bones from blood: Scientists aim to break new ground on fractures

... cells (MSCs) in cord blood appear similar to bone marrow stem cells but they are hard to locate. We aim to ...herapies. "We also want to compare them with bone marrow and embryonic stem cells and investigate how we can turn them into bone structures for use as 3D bon...

Researchers reverse juvenile diabetes in animal model

...nd also maintains a federally funded national bone marrow HLA typing center within his lab.With this funding...r processes for molecular typing for matching bone marrow donors and recipients, the ability to identify those at risk for diabetes, an understanding of the l...

Mice studies illustrate potential of chimp/human antibodies to protect against smallpox

...sing a library of antibodies derived from the bone marrow of two vaccinia-immunized chimpanzees, the study researchers identified a pair of potent antibodies that target and neutralize the B5 protein, one of five key proteins responsible for cell-to-cell spread of infectious vaccinia virus. The researchers ...

Cell therapy slows progression of an inherited neurological disease; Improves motor skills in mice

...e is no cure; the only current treatment is a bone marrow transplant. Ernesto Bongarzone, PhD, and his colleagues at the San Raffaele Scientific Institute in Milan, Italy, transplanted cells that produce myelin into the brains of newborn MLD mice. The researchers found that the transplanted myelin-produci...

New research demonstrates bone-marrow derived stem cells can reverse genetic kidney disease

...moved, the researchers transplanted allogenic bone marrow into the knockout mouse. According to Kalluri, within a period of about four weeks, the investigators found that approximately 10 percent of the transplanted cells had incorporated into the damaged regions of the kidney glomeruli in the knockout mou...

Powerful technique for multiplying adult stem cells may aid therapies

...ers tremendous promise for treatments such as bone marrow transplants and perhaps even gene therapy. "A 30-fold increase is ten times higher than anyone's achieved before," says Lodish, senior author on the paper, which will be published January 22 online in Nature Medicine. Unlike embryonic stem ...

First SCID gene chip to be introduced at Academy meeting on immunodeficiencies

...ave attained a ninety percent success rate in bone marrow transplantation and treatment advances can cure ce.... Advances include the high success rate for bone marrow transplantation for unrelated, matched donors and treatments using gene therapy. In addition, resea...