Overview

Stem cells are mother cells that have the potential to become any type of cell in the body. One of the main characteristics of stem cells is their ability to self-renew or multiply while maintaining the potential to develop into other types of cells. Stem cells can become cells of the blood, heart, bones, skin, muscles, brain etc. There are different sources of stem cells but all types of stem cells have the same capacity to develop into multiple types of cells. Stem cells are the foundation for every organ and tissue in your body. There are many different types of stem cells that come from different places in the body or are formed at different times in our lives. These include embryonic stem cells that exist only at the earliest stages of development and various types of tissue-specific (or adult) stem cells that appear during fetal development and remain in our bodies throughout life. All stem cells can self-renew and differentiate. Beyond these two critical abilities, though, stem cells vary widely in what they can and cannot do and in the circumstances under which they can and cannot dofficertain things. Stem cells have the remarkable potential to develop into many different cell types in the body during early life and growth. In addition, in many tissues they serve as a sort of internal repair system, dividing essentially without limit to replenish other cells as long as the person or animal is still alive. When a stem cell divides, each new cell has the potential either to remain a stem cell or become another type of cell with a more specialized function, such as a muscle cell, a red blood cell, or a brain cell. Stem cells are distinguished from other cell types by two important characteristics. First, they are unspecialized cells capable of renewing themselves through cell division, sometimes after long periods of inactivity. Second, under certain physiologic or experimental conditions, they can be induced to become tissue- or organ-specific cells with special functions. In some organs, such as the gut and bone marrow, stem cells regularly divide to repair and replace worn out or damaged tissues. In other organs, however, such as the pancreas and the heart, stem cells only divide under special conditions. Stem cell research is improving by leaps and bounds. These may soon become the basis for treating diseases such as Parkinson’s disease, diabetes, heart failure, cerebral palsy, heart disease and host of other chronic ailments. Stem cells may also be used for screening new drugs and toxins and understanding birth defects without subjecting human volunteers to the toxins and drugs.

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Ashwani Kumar obtained his Master’s degree in Clinical Pharmacology from Delhi University, India in 2007. Over the years, he has handled roles of increasing responsibilities including developing, reviewing, and approving medical and scientific literature and communications, e.g. manuscripts, and abstracts for the high indexed peer-reviewed journals; research proposal, posters, blogs, and articles. His major interest’s areas include pharmacogenomics, onco-pharmacogenomics, and neuroscience. He is currently working as freelance healthcare consultant at Sydney, Australia.

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