Tuesday, August 5, 2008

What is stem cell?

stem cells, ever heard of these? stem cells are the progenitors of all cells in human body. They are found in a variety of sources including adult tissue, umbilical cord blood, placental tissue and human embryos.

Stem cells have the ability to restore damaged organs and tissues. As we know, the only way now, to treat damaged organ or tissue is by getting a donor, and if you think getting a donor is like how you get pisang goreng by the roadside, you are totally wrong.

Stem cells can be used to treat various diseases including parkinson's and Alzheimer's diseases, spinal cord injuries, stroke, burn injuries, heart disease, diabetes amd arthritis. Usint these cells, scientists have started the tissue engineering or regenerative medicine that are closely associated with applications that repair or replace portions of or whole tissues such as bone, cartilage and other organs.

Regenerative medicine refers tothe clinical procedures that aim to repair damaged tissue or organs, most often by using tissue engineered scatfolds and stem cells to replace cells and tissues damaged by aging or dieases. In some stories, medical devices are part of therapeutic procedure.

and what is exactly tissue engineering? tissue engineering combines engineering principles and the life sciences in bold attempt to use the body's own biological materials to repair, regenerate and ultimately replace damaged organs and tissues, incluidng bone and cartilage.

the tissue engineering will surely eliminate the need for bone grafts and avoid problems associated with artificial replacement of joints, such as a donor site defects, immuno rejection. abnormal wear and tear and transmision of pathogens during tissue donations.

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