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Some Of The Types of Stem Cells One Must Know About
There are several different categories of stem cells, including autologous, allogenic, and xenogenic available at National Wellness Centers. Autologous stem cells are those derived from the same animal. These are best for transplanting since there is no concern about them being rejected. Allogenic stem cells are from a donor of the same species. Since stem cells do not have the standard cell surface markers that would trigger immune response, these cells can potentially be used without fear of rejection by the host tissue. Xenogenic stem cells come from a donor of another species, such as a pig. Although one would expect these cells to be rejected, because of their unique characteristics they can survive, in some cases, when injected into the body of another species.
There are several different categories of stem cells, including autologous, allogenic, and xenogenic available at National Wellness Centers. Autologous stem cells are those derived from the same animal. These are best for transplanting since there is no concern about them being rejected. Allogenic stem cells are from a donor of the same species. Since stem cells do not have the standard cell surface markers that would trigger immune response, these cells can potentially be used without fear of rejection by the host tissue. Xenogenic stem cells come from a donor of another species, such as a pig. Although one would expect these cells to be rejected, because of their unique characteristics they can survive, in some cases, when injected into the body of another species.
The most commonly cited function of stem cells is their ability to differentiate into different tissues but they also have other abilities that can be very beneficial for healing. Stem cells produce over 30 types of growth factors and tissue chemicals that stimulate healing. Stem cells help recruit other local and systemic stem cells to focus on repairing damaged tissue. They are also active in immune modulation to promote or suppress T-cell function.
Stem cells are triggered to move into an area by signals from the tissue based on chemical, neural, and mechanical changes. Hypoxia, which is lack of oxygen, and inflammation are strong triggers for stem cells to target an injury, although the stems cells account for less than half of the new tissue formed. The rest of the repair is done by other cells recruited and managed by the initial stem cells. This is why very tiny injections of stem cells are used. Injecting larger numbers of stem cells into an injured area can actually interfere with healing, since some of the injected cells die and must be removed during the healing process.
Stem cells are triggered to move into an area by signals from the tissue based on chemical, neural, and mechanical changes. Hypoxia, which is lack of oxygen, and inflammation are strong triggers for stem cells to target an injury, although the stems cells account for less than half of the new tissue formed. The rest of the repair is done by other cells recruited and managed by the initial stem cells. This is why very tiny injections of stem cells are used. Injecting larger numbers of stem cells into an injured area can actually interfere with healing, since some of the injected cells die and must be removed during the healing process.
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