Biochemical tests performed prior to surgery suggested no sign of pheochromocytoma with normal metanephrine, normetanephrine
, and dopamine levels.
reagents for enzyme immunoassay (metanephrine + normetanephrine
, leptin, melatonin)
Bantornwan et al, (34) followed-up 15 patients with SLE for six months and compared them with the control group for QoL and normetanephrine
Functional paragangliomas secrete catecholamines such as norepinephrine and normetanephrine
02 ND Plasma free metanephrines, nmol/L Normetanephrine
Effect of chlorpromazine or haloperidol on formation of 3-methoxytyramine and normetanephrine
in mouse brain.
For exam pie, the catabolism of the catecholamine neurotransmitters epinephrine and norepinephrine into metanephrine and normetanephrine
(respectively) primarily occurs in the same cell where they are synthesized.
The plasma levels of catecholamine derivates (metanephrine at 2063 pg/ml (normal < 90) and normetanephrine
at 1291 (normal < 200)) and the function studies with images confirmed the diagnosis.
The linkbetween vitiligo and the activity of monoaminergic systems has been found based on the finding that levels of norepinephrine (NE), epinephrine (E), normetanephrine
(NMN), metanephrine (MN), homovanillic acid (HVA), and 5-hydroxyindolacetic acid (5-HIAA) were significantly higher in patients with vitiligo compared to controls .
9) Although the biochemical phenotype of SDHAF2 is still unknown, the biochemical phenotype of the other genes are either nonsecreting or secrete dopamine, epinephrine, norepinephrine, metanephrine, normetanephrine
, and methoxytyramine (Table).
The serum catecholamine levels were elevated (metanephrine 420 pg/ml and normetanephrine
2002), increase of urinary excretion of normetanephrine
, a methylated breakdown product of norepinephrine, which indicates MAO inhibition (Riba et al.