Latvian[edit] From an earlier abu, still dialectally attested (abi was originally the feminine/neuter dual form), from Proto-Baltic *abu, from Proto-Indo-European *a(m)-bÊ°ou, where the initial part is an old deictic pronoun or particle, reinforcing the meaning âtwo, bothâ of the second part.
Parkinson's disease is caused by the progressive impairment or deterioration of neurons (nerve cells) in an area of the brain known as the substantia nigra.When functioning normally, these neurons produce a vital brain chemical known as dopamine.arkinson's disease is caused by the progressive impairment or deterioration of neurons (nerve cells) in an area of the brain known as the substantia nigra.
The other causes of parkinsonism, or the akinetic-rigid syndrome, include other neurodegenerative diseases besides typical Parkinson's disease, such as the Parkinson's Plus diseases, familial forms of Parkinson's disease, Wilson's disease and Huntington's disease in children (these diseases cause different symptoms in adults), poisons including carbon monoxide, manganese and MPTP (a rare contaminant in synthetic drugs of abuse, i.e. designer drugs), injuries to the basal ganglia including ...