Depressive symptoms of female nursing staff working in stressful environments and their association with serum creatine kinase and lactate dehydrogenase – a preliminary study

Table 2 Correlations among depressive symptoms and biochemical values

	Cortisol	Log CK	Log CK-MM	LDH	BUN	Log AST	Log ALT	AST/ALT ratio
CES-D scale	0.084	-0.29^**	-0.33^***	-0.29^**	0.002	0.047	0.12	-0.14
Cortisol		0.013	-0.21^*	-0.022	0.12	0.094	0.088	0.013
Log CK			0.59^****	0.17	0.15	0.31^***	0.15	0.11
Log CK-MM				0.26^*	0.067	0.16	0.11	-0.038
LDH					0.076	0.17	0.13	-0.035
BUN						0.34^***	0.39^****	-0.23^*
Log AST							0.79^****	-0.17
Log ALT								-0.72
AST/ALT ratio

Correlations are controlled for age, BMI, smoking habit, alcohol consumption, and leisure-time physical activities.
ALT, alanine aminotransferase; AST, aspartate aminotransferase; BUN, blood urea nitrogen; CK, creatine kinase; CK-MM, creatine kinase isozyme muscle M chain; LDH, lactate dehydrogenase.
*p < 0.05, **p < 0.01, ***p < 0.005, ****p < 0.001.

ISSN: 1751-0759