POSTURAL SYNCOPE
\pˈɒst͡ʃəɹə͡l sˈɪnkə͡ʊp], \pˈɒstʃəɹəl sˈɪnkəʊp], \p_ˈɒ_s_tʃ_ə_ɹ_əl s_ˈɪ_n_k_əʊ_p]\
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A transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., BRAIN ISCHEMIA). Presyncope refers to the sensation of lightheadedness and loss of strength that precedes a syncopal event or accompanies an incomplete syncope. (From Adams et al., Principles of Neurology, 6th ed, pp367-9)
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Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.