. Author manuscript; available in PMC: 2012 Sep 25.

Published in final edited form as: Toxicol Appl Pharmacol. 2010 Aug 20;249(1):47–54. doi: 10.1016/j.taap.2010.08.013

Table VI.

Effect of different dose of chronic arsenic exposure on activity level of serum catalase and serum myeloperoxidase

	Unexposed		Exposed

	Dose groups according to water arsenic content
	≤10 µg/L (Mean ± SD)	>10 – ≤100µg/L (Mean ± SD)	>100 – ≤200µg/L (Mean ± SD)	>200µg/L (Mean ± SD)

Catalase (µmoles/min/mg of total protein)	0.631 ± 0.358	2.237 ± 1.97^*	2.483 ± 1.827^*	3.607 ± 4.151^*

Myeloperoxidase (nmoles/min/mg of total protein)	3.327 ± 2.318	8.244 ± 6.134^*	9.737 ± 8.299^*	14.488 ± 10.298^*

	Dose groups according to urinary arsenic content

	≤50 µg/L (Mean ± SD)	>50 – ≤200µg/L (Mean ± SD)	>200 – ≤500µ g/L (Mean ± SD)	>500µg/L (Mean ± SD)

Catalase (µmoles/min/mg of total protein)	0.631 ± 0.358	2.102 ± 1.043^*	2.455 ± 2.236^*	3.987 ± 4.459^*

Myeloperoxidase (nmoles/min/mg of total protein)	3.327 ± 2.318	9.454 ± 5.821^*	9.455 ± 7.804^*	14.327 ± 11.712^*

p<0.01 compared to the unexposed group (One sided Welch two sample t test)