Stem cells: how to repair your body?
Getting rid of an incurable disease, prolonging life and prolonged youthfulness of the body – such immodest hopes for stem cells.
What is a cellular foundation of the future of medicine?
Stem cells – the basis of the future development of the organism. In the first few days, the embryo consists of undifferentiated cells, that is, from each of these cells can “grow” is a particular organ or tissue. After 4.5 days of its development, cells become differentiated, that is, purpose – get some of the liver, others will become the building blocks of light, etc. Only a small number of undifferentiated, stem cells remain in the body of the newborn. They will serve as the “repair team” that is, to restore damaged or dead cells in an emergency situation in a lifetime. The highest concentration of stem cells is presented in liquid bone marrow, a small number of stem cells present in other tissues such as fat. With aging, the number of stem cells, and with them the ability to self-repair is reduced.
What is the use of stem cells?
Once scientists learned how to extract, multiply and implanting stem cells into the body, started booming. Exciting to replace stem cells dilapidated or dead cells, grown from his own seat next building material bodies brought mankind if not for immortality, but, in any case, a significant prolongation of life
What are the types of IC and why are they used?
Embryonic stem cells (ESCs). Zygote, the resulting fusion of sperm and egg, begins to divide and form a blastocyst 5th day of its cell mass just stand stem cells. ESC-cells can be any of the systems of the adult organism. For example, the liver, which will take the treatment of hepatitis B and cirrhosis of the liver to a whole new level.
Fetal stem cells. Obtained from aborted material. At this stage, the cells have already begun to differentiate, therefore, they can not give life to anyone, but certain new cells. For example, fetal neural tissue can be the basis for the nerve cells.
From umbilical cord blood stem cells can be born. First of all, they are suitable for the creation of new blood-forming cells. In the current research, the purpose of which is the freezing of stem cells from umbilical cord blood, which if necessary will be “native” the building blocks of human and can, for example, make an effective treatment of asthma or even to fight tumors.
Mesenchymal SC. Found in bone and fat adult. SC bone marrow are used to restore hematopoiesis. With stromal SC derived from adipose tissue are cells to repair the skin, cartilage and bone tissue.
Problems and prospects
Let’s not focus on the ethics of using fetal or embryonic stem. From a purely medical point of view, the main barriers to the use of stem cells is their rejection of both foreign and oncologic safety, currently unproven. Prospects of stem cell therapy are obvious to scientists, and has a number of countries, numerous studies that hopefully will turn into the next 10-15 years, the same victory over cancer, wrinkles and low life expectancy.