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Topic: Stem cell

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In the News (Thu 21 Mar 19)

  ISSCR :: Stem Cell Science : Frequently Asked Questions
Adult stem cells are distinct from cells isolated from embryos or fetuses and are found in tissues that have already developed, as in animals or humans after birth.
Umbilical cord blood stem cells are used for stem cell transplantation to reconstitute blood cell formation (the hematopoietic system) in patients that have been irradiated or treated with specific drugs for cancer or leukemia.
Human mesenchymal stem cells, or bone marrow stromal stem cells, are isolated from the bone marrow and grown in culture media supplemented with serum from the blood.
www.isscr.org /science/faq.htm   (6067 words)

  A technology magazine article on Stem Cell Research
Adult stem cells, on the other hand, are found in all tissues of the growing human being and, according to latest reports, also have the potential to transform themselves into practically all other cell types, or revert to being stem cells with greater reproductive capacity.
Stem cells are of wide interest for medicine, because they have the potential, under suitable conditions, to develop into almost all of the different types of cells.
In recent years, however, pluripotent stem cells were discovered in various human tissues; in the spinal cord, in the brain, in the mesenchyme (connective tissue) of various organs, and in the blood of the umbilical cord.
www.stemcellnews.net /21st   (2852 words)

  Stem cell - Wikipedia, the free encyclopedia
Stem cells are also often categorized according to their source, as either adult, embryonic, cancer or cord blood stem cells.
Embryonic stem cells are cultured pluripotent cells obtained from the undifferentiated inner mass cells of an early stage human embryo (sometimes called a blastocyst, which is an embryo that is between 50 to 150 cells).
Cancer stem cells arising through malignant transformation of adult stem cells are proposed to be the source of some or all tumors and cause metastasis and relapse of the disease.
en.wikipedia.org /wiki/Stem_cell   (1674 words)

 Stem Cell Research
Stem cells are cells within the body that have the potential to develop into one or many kinds of cells.
Some research suggests that adult stem cells can be used to grow blood cells and cells for damaged bones or liver tissue.
The Board approved a recommendation to allow meritorious research involving human stem cells to be eligible for funding as part of the association's scientific research grant program — but not until the Board reviewed and approved specific rules and safeguards (research standards) for funding this type of research.
www.americanheart.org /presenter.jhtml?identifier=4757   (687 words)

 Frequently Asked Questions About Stem Cells   (Site not responding. Last check: 2007-11-07)
Pluripotent stem cells are descendants of the totipotent stem cells of the embryo.
Embryonic stem cells (ESCs) are derived from 4- to 5-day-old embryos.
Embryonic stem cells also continue to divide indefinitely when placed in culture, while this may not be the case for adult stem cells and this would reduce their capacity to form new cell types.
www.stemcellresearchfoundation.org /About/FAQ.htm   (4167 words)

 Stem Cell Research Basics: Early Stem Cells
Early human stem cells are thought to be an important source of potentially all types of clinically relevant cells that could become replacement tissue (e.g., organs) in the future or be used to treat and prevent disease.
Early stem cells are found in the inner cell mass of the blastocyst.
The inner cell mass of the blastocyst is then removed to generate a pluripotent stem cell line.
www.kumc.edu /stemcell/early.html   (775 words)

 Reference.com/Encyclopedia/Stem cell
Stem cells are also categorized according to their source, as either adult or embryonic.
Stem cells which derived from the inner mass cells of a blastocyst (an early embryo) have pluripotent properties—they are able to grow into any of the 200 cell types in the body.
Embryonic stem cell researchers are currently attempting to grow the cells beyond the first stages of cell development, to overcome difficulties in host rejection of implanted stem cells, and to control the multiplying of implanted embryonic stem cells, which otherwise multiply uncontrollably, producing cancer.
www.reference.com /browse/wiki/Stem_cell   (4796 words)

 ACS :: Bone Marrow or Peripheral Blood Stem Cell Transplantation (SCT)
Stem cells (that form the blood cells) are the earliest form of bone marrow cells.
Stem cells are given to patients after they have had very high-dose chemotherapy, which is likely to cause permanent damage to patients’ bone marrow.
The stem cells migrate to the bone marrow.
www.cancer.org /docroot/CRI/content/CRI_2_4_4X_Stem_Cell_Transplantation_32.asp?sitearea=   (1581 words)

Bone marrow derived stem cells are used in cancer and autoimmune treatment protocols, to replace or repair organs that are damaged by chemotherapy during cancer therapy.
Adult stem cell therapy is being used to treat brain tumors, retinoblastoma, ovarian cancer, sarcomas, multiple myeloma, leukemia, breast cancer, neuroblastoma, renal cell carcinoma, juvenile rheumatoid arthritis, and other diseases.
Instead, the pro-abortionists are clamering for funds to be spent on embryonic stem cell research, when it is well-known in the scientific community that embryonic research is a blind alley which will not produce the desired cures.
www.pathlights.com /abortion/Stem-cell.htm   (3091 words)

 Stem Cells
The only totipotent cells are the fertilized egg and the first 4 or so cells produced by its cleavage (as shown by the ability of mammals to produce identical twins, triplets, etc.).
These adult stem cells may also be the cells that — when one accumulates sufficient mutations — produce a clone of cancer cells.
But even where no "autologous" stems cells are available, there may be a solution: using somatic-cell nuclear transfer (but with no goal of attempting to implant the resulting blastocyst in a uterus).
users.rcn.com /jkimball.ma.ultranet/BiologyPages/S/Stem_Cells.html   (1690 words)

 AAAS - Center for Science, Technology and Congress
The following year, the National Academy of Sciences released a report on stem cells that concluded that public funding should be made available for research on both embryonic and adult cells, and that in the long run, it would be necessary to derive new embryonic stem cell lines.
By that point, it was widely reported that the original number of embryonic stem cell lines deemed available for federal research in August 2001 had been overestimated and many of those cell lines were perhaps unsuitable for research.
Stem cell research even received prime-time billing in the Democratic National Convention with a speech by Ron Reagan Jr.
www.aaas.org /spp/cstc/briefs/stemcells/index.shtml   (3297 words)

 Peripheral Blood Stem Cell Transplant - Cancer information on MedicineNet.com
Peripheral blood stem cell transplantation is a new technique in which stem cells are obtained from a patient's blood and used in bone marrow transplantation.
A stem cell can forgo immortality and turn into an ordinary blood cell, a red blood cell (an erythrocyte), a white blood cell (a leukocyte), or a large cell (a megakaryocyte) that fragments into the platelets needed for blood to clot.
To recruit enough stem cells into the blood, stem cells are lured out of the bone marrow by a special regimen of drugs and coaxed into entering the peripheral blood (the blood stream).
www.medicinenet.com /peripheral_blood_stem_cell_transplant/article.htm   (513 words)

 Safety Issues in Stem Cell Transplants
Stem cells and neurons may be contaminated with blood and other tissue cells which have developed immune defenses to "foreign" cells.
Since these umbilical cord stem and progenitor cells have not yet developed mature immune defenses (ABO and HLA antigens on their surfaces), they do not induce graft versus host reactions that may occur with differentiated embryonic stem cells or bone marrow stem cells.
Stem cells have been observed to fuse with established neurons as well as differentiate into neurons, astrocytes and glia cells.
www.stemcelltherapies.org /safety.htm   (589 words)

 ACS :: Stem Cell Transplant
With a stem cell transplant (SCT), the patient's bone marrow is intentionally destroyed by high-dose chemotherapy and total body irradiation.
In modern practice, the blood-forming stem cells are separated and removed from the peripheral (circulating) blood by a method known as apheresis.
In an autologous stem cell transplant, a patient's own stem cells are removed from his or her bone marrow or bloodstream.
www.cancer.org /docroot/CRI/content/CRI_2_4_4X_Stem_Cell_Transplantation_65.asp?rnav=criThe   (1120 words)

 Technology Review: Stem Cell Hope
But even if stem cell researchers learn to generate these various tissues, doctors still will not be able to transplant them into patients without either the risk of immune rejection or the use of immunosuppressive drugs that can lead to a wide variety of serious and potentially life-threatening complications.
Scientists hope to reprogram patients' cells in the laboratory so that they enter a stem cell–like state where they have the potential to turn into some (multi-potential) or all (pluripotential) of the 200-plus cell types in the body.
This year, there are estimates that revenues generated from the sales of stem cells in humans will exceed $15 million and are on track to double in the coming year.
www.technologyreview.com /read_article.aspx?id=16820&ch=biotech   (1011 words)

 Embryonic Stem Cell Research at UW-Madison
UW establishes stem cell and regenerative medicine center May 17, 2007 In an effort to strengthen and sustain its leadership in the companion fields of stem cell research and regenerative medicine, the University of Wisconsin-Madison will establish a new Stem Cell and Regenerative Medicine Center.
Stem cell therapy shows promise for rescuing deteriorating vision March 28, 2007 For the millions of Americans whose vision is slowly ebbing due to degenerative diseases of the eye, the lowly neural progenitor cell may be riding to the rescue.
Scaling up stem cells: Project aims to churn out cells in quantity, quality March 28, 2007 For scientists, one of the charms of human embryonic stem cells is their ability to divide and replicate — as far as we know — forever in the culture dish.
www.news.wisc.edu /packages/stemcells   (593 words)

 Stem Cell Research Blog
Poway, Calif.-based Vet-Stem, which is a world leader in veterinary regenerative medicine, has been using its licensed stem cell therapy in horses for three years and is now extending its commercial service to include dogs, who are treated with their own stem cells to repair tendons and ligaments.
Australian Professor Alan Trounson who helped derive some of the earliest human embryonic stem cell colonies in the late-1990s and widely regarded as the country’s top stem cell scientist, has accepted to take the role of president of the California Institute of Regenerative Medicine later this year and thus is leaving the country.
Stem Cell Research Blog is the premier blog for news and views on Stem Cell Research and Cord Blood Banking.
stemcell.taragana.net   (741 words)

 Human stem cell research: all viewpoints
Similarly, articles by medical groups that promote stem cell research are not helpful, because they do not touch on their fundamental belief that embryos are not human persons.
Stem cells can now be grown in the laboratory, so (in a pinch) some research can be done using existing stem cells.
Stem cells can also be extracted from adult tissue, without harm to the subject.
www.religioustolerance.org /res_stem.htm   (1036 words)

 Fact Sheet: Embryonic Stem Cell Research
Embryonic stem cells, which come from the inner cell mass of a human embryo, have the potential to develop into all or nearly all of the tissues in the body.
Adult stem cells are unspecialized, can renew themselves, and can become specialized to yield all of the cell types of the tissue from which they originate.
Embryonic stem cells may also be used to understand basic biology and to evaluate the safety and efficacy of new medicines.
www.whitehouse.gov /news/releases/2001/08/20010809-1.html   (825 words)

 Stem Cell
Pluripotent stem cells have the potential to develop into specialized cells that could be used as replacement cells and tissues to treat many diseases and conditions, including Parkinson's disease, spinal cord injury, stroke, burns, heart disease, diabetes, osteoarthritis, and rheumatoid arthritis.
Human adult stem cells have not yet been isolated from all cell and tissue types, and they have not been shown to be capable of developing into all of the different cell and tissue types of the body.
For studies using human pluripotent stem cells derived from human embryos, NIH funds may be used only if the cells were derived from frozen embryos that were created for the purposes of fertility treatment, were in excess of clinical need, and were obtained after the consent of the donating couple.
www.focusonals.com /stemcell.htm   (1765 words)

 Stem cell - Stem cell - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-11-07)
UK stem cell scientists call for £350m for research by 2016 as the government pledges £50m by 2007.
There have been rapid advances in stem cell research sna cloning technology durring the last few years here are some of the issues.
Stem Cell, Stem Cell Institute at the University of Minnesota.
homedepot-com.easylookfor.com /elf/homedepot-com-stem-cell.htm   (277 words)

 Q & A on Embryonic Stem Cell Research - Stem Cell Institute at the University of Minnesota
Second, the human embryo stem cells approved for federal research funding by President Bush in 2001 have been contaminated by mouse cells and are not likely to be useful in any clinical way.
Stem cells are parent cells for all the tissues of the body.
Embryo stem cells have the ability to become everything, which is their great potential and promise for important new medical treatments and cures.
www.stemcell.umn.edu /stemcell/stemcell101/qanda/home.html   (955 words)

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