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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Interindividual variability of histamine N-methyltransferase in the human liver and kidney.

1. The aim was to investigate the possibility of interindividual variability of histamine N-methyltransferase (HNMT) in the human liver and renal cortex. The activity of HNMT was measured in 99 specimens of the human liver and in 75 specimens of the renal cortex. 2. In the liver the activity of HNMT was positively skewed. It ranged 2.9-fold with a median of 1.72 pmol/min/mg. In the renal cortex the activity of HNMT was normally distributed and ranged 2.6-fold with a mean and coefficient of variation of 1.35 pmol/min/mg and 21%, respectively. 3. The activities of catechol methyltransferase and thiopurine methyltransferase were measured in the renal cortex and any correlations with HNMT activity were assessed. There was a weak but significant correlation (r = 0.294, p = 0.010) between HNMT and catechol methyltransferase activities whereas HNMT activity was not correlated with thiopurine methyltransferase activity. 4. These results are consistent with the view that HNMT is well expressed in the human liver and renal cortex and that it varies among subjects.[1]

References

  1. Interindividual variability of histamine N-methyltransferase in the human liver and kidney. De Santi, C., Donatelli, P., Giulianotti, P.C., Pietrabissa, A., Mosca, F., Pacifici, G.M. Xenobiotica (1998) [Pubmed]
 
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