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It's the leading cause of death in the United States, and stem cells may provide some relief. Research is underway to see if injecting the cells into the heart could help regenerate heart muscle damaged by, for example, a heart attack. Again, researchers have reported success in rodents.

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reprogrammed to an embryonic stem cell-like state by introducing genes important for maintaining the essential properties of embryonic stem cells (ESCs).

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type of pluripotent stem cell that can be generated directly from adult cells. The most well-known type of pluripotent stem cell is the embryonic stem cell.

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Embryonic stem cells can become all cell types of the body because they are pluripotent. Adult stem cells are thought to be limited to differentiating into different cell types of their tissue of origin. Embryonic stem cells can be grown relatively easily in culture.

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The development of new cell models of Parkinson's disease is a particularly promising area of stem cell research, as the current lack of progressive, predictive models of Parkinson's disease remains a major barrier to drug development. Cell models of Parkinson's disease generated from stem cells could help researchers screen drugs more efficiently than in currently available animal models, and study the underlying biological mechanisms associated with Parkinson's disease in cells taken from people living with the disease.

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There are about 37.2 trillion cells in the human body.

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Adult stem cells have been identified in many organs and tissues, including brain, bone marrow, peripheral blood, blood vessels, skeletal muscle, skin, teeth, heart, gut, liver, ovarian epithelium, and testis.

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Parkinson's doesn't affect everyone the same. Nothing affects everyone the same. All people are different

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anxiety , emotional changes , cognitive problems (problems with thinking and/or remembering) , difficulty swallowing and chewing , speech changes , urinary problems , constipation , skin problems, sleep problems , orthostatic hypo-tension (a sudden drop in blood pressure when standing up from a sitting or lying down position) , muscle cramps and dystonia (twisting and repetitive movements), pain, fatigue and loss of energy, sexual dysfunction.

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Nerve cells in the substantia nigra produce the neurotransmitter dopamine and are responsible for relaying messages that plan and control body movement.

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In certain specialized neurons, dendrites actually form synapses with one another; these are called dendrodendritic synapses. 3) amino acids - glutamate and aspartate are well known excitatory transmitters, while gamma-aminobutyric acid(GABA), glycine and taurine are inhibitory neurotransmitters.

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https://www.gstatic.com/healthricherkp/pdf/parkinson_s_disease.pdf
https://www.michaeljfox.org/understanding-parkinsons/living-with-pd/topic.php?stem-cells
http://health.usnews.com/health-news/family-health/diabetes/articles/2009/03/13/stem-cells-10-diseases-they-may--or-may-not--cure

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Nerve cell damage in the brain causes dopamine levels to drop, leading to the symptoms of Parkinson's. Medications can help control the symptoms of Parkinson's.

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More than 200,000 US cases per year. It can't be cured , but treatment may help. Parkinson's also lasts years or can be life long.

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Parkinson's often starts with a tremor in one hand. Other symptoms are slow movement, stiffness, and loss of balance.

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Parkinson's disease mainly affects people ages 41-60+

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A disorder of the central nervous system that affects movement, often including tremors. Degenerative, progressive disorder that affects nerve cells in deep parts of the brain is another way of explaining it.