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* what the difference of Urine HOMOVANILLIC ACID and
 #140472  
  pulvinar - 11/22/06 00:23
 
  HOMOVANILLIC ACID and vanillylmandelic acid ? are they same?  
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* Re:what the difference of Urine HOMOVANILLIC ACID
#567505
  pulvinar - 11/22/06 00:51
 
  anyone, please  
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* Re:what the difference of Urine HOMOVANILLIC ACID
#567526
  zarra - 11/22/06 02:08
 
  both are different breakdown products of various hormones - so the difference is in the hormone that it comes from.

example:

like DA breaks down to homovanillic acid via MAOb
and
Norepi breaks down to vendamenalic acid via COMT
 
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* Re:what the difference of Urine HOMOVANILLIC ACID
#567528
  priti - 11/22/06 02:18
 
  # Homovanillic acid-metabolite of Dopamine

increases in-schizophrenia/psuchosis

decreases in -parkinson/depression/antipsychotic drugs


#VMA-metabolite of norepinephrine

increases in -pheochromocytoma

 
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* Re:what the difference of Urine HOMOVANILLIC ACID
#567563
  cemmsk - 11/22/06 06:56
 
  neuroblastoma: HVA increases
pheocr : MVA increases

(from robbins)
 
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* Re:what the difference of Urine HOMOVANILLIC ACID
#1429931
  rizowana - 08/23/08 06:22
 
  .....  
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