Stem cells are capable of dividing and renewing themselves
for long periods. Unlike muscle cells, blood cells, or nerve cells—which do not
normally replicate themselves—stem cells may replicate many times,
or proliferate. Regardless of their source—have three general properties:
they are capable of dividing and renewing themselves for long periods; they are
unspecialized; and they can give rise to specialized cell types. Stem cells
have been successfully isolated from variety of human tissues including
orofacial tissues. Initial
evidence from pioneering studies has documented the likely breakthrough that
stem cells offer for various life-threatening diseases that have so far
defeated modern medical care.
Scientists are still under the process
of understanding the several unanswered questions related to stem cells as stem cell
treatment is the most promising therapy for many devastating
degenerative diseases. Anemia, leukemia, lymphoma are some of the blood related
disorders treated through stem cell
treatment in India.
Now the question that strikes into the mind of every
reader is what are stem cells. The answer is - They are unspecialized cells
with an extraordinary ability to self-renew, capable of differentiating into
one or more specialized cell types playing a crucial role in homeostasis and
tissue repair. Based on their
origin, stem cells are categorized either as embryonic stem cells (ESCs) or as
postnatal stem cells/somatic stem cells/adult stem cells (ASCs). Embryonic stem
cells (ESCs) are derived from embryos that are 2–11 days old called
blastocysts. They are best grown from supernumerary embryos obtained from in
vitro fertilization
centers. Adult stem cells are found in most
adult tissues. The plasticity of an adult stem cell is described as its ability
to expand beyond its potential irrespective of the parent cell from which it is
derived. For example, dental pulp stem cells not only develop into tooth tissue
but also have the ability to differentiate into neuronal tissue.
Depending on their origin, adult stem cells can be further
classified as hemopoetic stem cells (HSCs) and mesenchymal stem cells (MSCs). Stem cell
treatment for many diseases are now the most reliable and effective
method to cure it.
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