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Matti Narkia's List: Stem Cells
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Dec 10, 09
"Alkoholin kohtuullinenkin kulutus lisää rintasyövän uusiutumisen riskiä, arvioi amerikkalaisen tutkimus.
Aikaisempien tutkimusten perusteella on tiedetty, että alkoholi lisää riskiä sairastua rintasyöpään. Sen sijaan alkoholin vaikutusta rintasyövästä toipuvien selviytymiseen on tutkittu puutteellisesti.
Kaiser Permanente -tutkimuslaitoksen tutkijat paikkasivat tätä epäkohtaa seuraamalla vajaata kahtatuhatta kalifornialaista rintasyöpäpotilasta. Kaikkien naisten rintasyöpä oli havaittu varhaisvaiheessaan vuosien 1997–2000 aikana. Tutkijat vertasivat rintasyövän uusiutumista naisilla, joista toiset käyttivät alkoholia ja toiset eivät. Alkoholiryhmään kuuluvilta naisilta kyseltiin myös tietoja heidän juomatavoistaan, juoduista alkoholimääristä ja missä muodossa he alkoholinsa nauttivat. " -
Apr 18, 09
April 16, 2009 (LifeSiteNews.com) - A study carried out in Brazil and published in the Journal of the American Medical Association, on the use of adult stems cells to treat diabetes, has found that most of the patients in the study group were partially or wholly healed of the disease after receiving injections of stem cells from their own bone marrow.
The procedure, called autologous nonmyeloablative hematopoietic stem cell transplantation (HSCT), was carried out on 15 patients with type 1 diabetes mellitus (DM). The report on the study stated that most of the patients no longer needed insulin injections after the treatment and were still "insulin free with normal levels of glycated hemoglobin A1c (HbA1c) during a mean 18.8-month follow-up" -
Apr 17, 09
ScienceDaily (Apr. 17, 2009) — A team from the Institute for Research in Immunology and Cancer (IRIC) at Université de Montréal has succeeded in producing a large quantity of laboratory stem cells from a small number of blood stem cells obtained from bone marrow.
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Apr 15, 09
TUESDAY, April 14 (HealthDay News) -- A particular type of stem cell transplantation using the patient's own cells led to short-term freedom from insulin injections in 20 of 23 patients newly diagnosed with type 1 diabetes participating in an experimental protocol in Brazil.
One patient even managed to go four years without needing outside sources of insulin, although the average was 31 months, said the authors of a report in the April 15 issue of the Journal of the American Medical Association, a themed issue on diabetes.
The patients also kept their blood sugar under control, which is key to preventing complications from diabetes. And, the authors stated, increased C-peptide levels indicated that the pancreas' beta cells were alive and well. -
Apr 01, 09
Stem cells are cells with the potential to develop into many different types of cells in the body. They serve as a repair system for the body. There are two main types of stem cells: embryonic stem cells and adult stem cells.
Doctors and scientists are excited about stem cells because they have potential in many different areas of health and medical research. Studying stem cells may help explain how serious conditions such as birth defects and cancer come about. Stem cells may one day be used to make cells and tissues for therapy of many diseases, including Parkinson's disease, Alzheimer's disease, spinal cord injury, heart disease, diabetes and arthritis. -
Apr 01, 09
Stem cells are a class of undifferentiated cells that are able to differentiate into specialized cell types. Commonly, stem cells come from two main sources:
Embryos formed during the blastocyst phase of embryological development (embryonic stem cells) and
Adult tissue (adult stem cells).
Both types are generally characterized by their potency, or potential to differentiate into different cell types (such as skin, muscle, bone, etc. -
Apr 01, 09
Stem cells are unprogrammed cells in the human body that can be described as "shape shifters." These cells have the ability to change into other types of cells. Stem cells are at the center of a new field of science called regenerative medicine. Because stem cells can become bone, muscle, cartilage and other specialized types of cells, they have the potential to treat many diseases, including Parkinson's, Alzheimer's, diabetes and cancer. Eventually, they may also be used to regenerate organs, reducing the need for organ transplants and related surgeries.
"Stem cells are like little kids who, when they grow up, can enter a variety of professions," Dr. Marc Hedrick of the UCLA School of Medicine says. "A child might become a fireman, a doctor or a plumber, depending on the influences in their life -- or environment. In the same way, these stem cells can become many tissues by making certain changes in their environment." -
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Apr 01, 09
Benefits of Stem Cells to Human Patients
Adult Stem Cells v. Embryonic Stem Cells -
Apr 01, 09
Stem cells can develop into different cell types. They may offer a renewable source of replacement cells to treat diseases, conditions, and disabilities
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Apr 01, 09
Stem cells are cells found in most, if not all, multi-cellular organisms. They are characterized by the ability to renew themselves through mitotic cell division and differentiating into a diverse range of specialized cell types. Research in the stem cell field grew out of findings by Canadian scientists Ernest A. McCulloch and James E. Till in the 1960s.[1][2] The two broad types of mammalian stem cells are: embryonic stem cells that are isolated from the inner cell mass of blastocysts, and adult stem cells that are found in adult tissues. In a developing embryo, stem cells can differentiate into all of the specialized embryonic tissues. In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing specialized cells, but also maintain the normal turnover of regenerative organs, such as blood, skin or intestinal tissues.
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