Dopamine deficiency or disorders will be losing their ability to control muscle, or unable to concentrate. Losing the ability to control muscle, quivering in will lead to serious is not independent, and even suffering from Parkinson's disease.
When we are actively doing STH, mind will be very active hormone secrete large amounts of dopamine. It is a kind of human desire of hormones, but excessive secretion of dopamine can result in excessive consumption of energy and heat, leading to premature death. Such as huntington's disease is caused by too much dopamine disease, the patient's limbs and torso would like dance to twitch involuntarily, disease development to late, daily action inconvenience caused by the patient's life will not be able to provide for oneself, lose the ability to act, unable to speak, easy chokes, could not even eat.
The most commonly used form of dopamine hydrochloride, is white or kind of white, shiny crystal, odourless, taste bitter. After the dew in the air and with light color gradient. Soluble in water, slightly soluble in anhydrous ethanol, slightly dissolved in chloroform or ether. Melting point 243 ℃ to 249 ℃ (decomposition).
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From:Steroid hormones