Stem cells from amniotic fluid.Winston-Salem, NC -- On January 7, 2007, Dr. Anthony Atala, head of the Institute of Regenerative Medicine at the Wake Forest University School of Medicine Wake Forest University School of Medicine, along with North Carolina Baptist Hospital and Wake Forest University Physicians, is part of the Wake Forest University Baptist Medical Center system. , announced that scientists had isolated a new type of stem cell stem cell In living organisms, an undifferentiated cell that can produce other cells that eventually make up specialized tissues and organs. There are two major types of stem cells, embryonic and adult. from amniotic fluid and from the placenta. They labeled these cells "amniotic amniotic /am·ni·ot·ic/ (am?ne-ot´ik) pertaining to or developing an amnion. amniotic pertaining to the amnion. amniotic fluid fluid-derived ceils." It was claimed that these cells can form muscle, fat, bone, blood vessel, nerve and liver cells, and that they do not form tumours. If AFS A distributed file system for large, widely dispersed Unix and Windows networks from Transarc Corporation, now part of IBM. It is noted for its ease of administration and expandability and stems from Carnegie-Mellon's Andrew File System. AFS - Andrew File System cells prove to have therapeutic value, they could, perhaps, be frozen and banked for future use by the donor's offspring. If AFS cells are derived in a way that does not endanger the life of the unborn child, their retrieval would be morally acceptable, e.g., cells derived from the placentas after the birth of a child. Derivation of such AFS cells from placenta following live birth has already been achieved by scientists at the Department of Pathology at the University of Pittsburg in 2004 see http://stemcells.alphamedpress.org/cgi/content/abstract/2004-0357vl.) On the other hand, AFS cell derivation by physicians for clinical purposes, from routine pre-natal tests used to detect fetal abnormalities, e.g. amniocentesis amniocentesis (ăm'nēō'sĕntē`sĭs), diagnostic procedure in which a sample of the amniotic fluid surrounding a fetus is removed from the uterus by means of a fine needle inserted through the abdomen of the pregnant woman (see and chorionic villus sampling chorionic villus sampling (CVS) or chorionic villus biopsy (CVB) (kōr'ē-ŏn`ĭk, kôr'–), diagnostic procedure in which a sample of chorionic villi from the developing placenta is removed from the , would not be morally acceptable. Why? Amniocentesis is associated with a one-in-two hundred incidence, and chorionic villus sampling with a one-in-one hundred incidence of abortion of the unborn child. An increase in the number of amniocentesis and chorionic villus sampling tests would probably significantly increase the number of abortions. Ironically, a pregnant woman might opt for this procedure that seriously threatens the life of her unborn child in the interest of a hypothetical cure of future disease of that same child. Furthermore, the availability of such tests might result in physicians promoting this procedure in order to lessen the probability that they would be sued in the future because they had not offered it to the patient. (John B. Shea, MD FRCP FRCP Fellow of the Royal College of Physicians. FRCP abbr. Fellow of the Royal College of Physicians (C)) |
|
||||||||||||||||

Printer friendly
Cite/link
Email
Feedback
Reader Opinion