Table 3: Partial Pearson correlations of plasma pyridoxal-5′-phosphate with homocysteine, indicators of oxidative stress, and antioxidant capacities in the surgical intensive care unit1.

Plasma PLP (nmol/L) ( )
Day 1 Day 7 (Day 7 − Day 1)2


Erythrocyte PLP (pmol/g Hb)
 Day 1 0.39*
 Day 70.37
(Day 7 − Day 1)0.01
Plasma PLP/Erythrocyte PLP ratio
 Day 10.44**
 Day 70.48**
(Day 7 − Day 1)0.58**
Plasma homocysteine ( mol/L)
 Day 1−0.10
 Day 70.33
(Day 7 − Day 1) 0.33
MDA ( mol/L)
 Day 1−0.19
 Day 70.13
(Day 7 − Day 1)0.10
Total antioxidant capacity ( mol/L)
 Day 1−0.10
 Day 70.36
(Day 7 − Day 1) 0.08
SOD (U/mL)
 Day 10.42*
 Day 70.37*
(Day 7 − Day 1) 0.56**
GST (nmol/min/mL)
 Day 1−0.09
 Day 7−0.05
(Day 7 − Day 1)−0.06
GPx (nmol/min/mL)
 Day 1 −0.06
 Day 70.05
(Day 7 − Day 1)
0.27

Values are presented as correlation coefficient ( ) by using partial Pearson correlation coefficient after adjusting age, gender, and C-reactive protein. PLP: pyridoxal-5′-phosphate; Hb: hemoglobin; MDA: malondialdehyde; SOD: superoxide dismutase; GST: glutathione S-transferase; GPx: glutathione peroxidase.
2 (Day 7 − Day 1) is the value of the difference between day 7 and day 1.
* ; ** ; .