Relationship between Nonalcoholic Fatty Liver Disease and Vitamin D Nutritional Status in Extreme Obesity

Table 4

Mean deviation serum concentrations of biochemical indicators of liver tests according to the staging of NAFLD.

Variables	Staging of NAFLD by liver biopsy
	Steatosis	Steatohepatitis without fibrosis	Steatohepatitis with fibrosis	value
	AST (U/L)	22.9 ± 12.8	29.9 ± 26.7		30.2 ± 7.6	0.410
ALT (U/L)	27.1 ± 15.5	28.2 ± 17.5	28.9 ± 10.3	0.343
AP (U/L)	75.1 ± 24.9	78.3 ± 20.2	73.1 ± 1.4	0.722
GGT (U/L)	24.9 ± 17.8	42.6 ± 27.7	62.4 ± 14.6	0.044
Albumin (U/L)	4.5 ± 0.7	3.9 ± 0.3	3.3 ± 0.2	0.029

ANOVA: mean and standard deviation. Alb: albumin; ALT: alanine aminotransferase; AP: alkaline phosphatase; AST: aspartate aminotransferase; GGT: gamma-glutamyl transpeptidase.