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. Author manuscript; available in PMC: 2014 Sep 6.
Published in final edited form as: J Clin Psychiatry. 2012 May 15;73(6):843–848. doi: 10.4088/JCP.11m07139

Table 1.

Pre-and Post-Treatment Plasma Levels of SAMe and other One-Carbon-Cycle Intermediates

Pre-Treatment Post-Treatment Changes in treatment arms
SAMe (n=20) Placebo (n=15) Significance* (SAMe vs PBO) SAMe (n=20) Placebo (n=15) Signif** (SAMe vs PBO) Signif+ (SAMe arm) Signif++ (PBO arm)
Mean SD Mean SD Mean SD Mean SD
SAMe (nmol/L) 82.9 22.44 71.24 12.44 t=1.81, p=0.08 503.77 535.76 81.27 31.52 p=0.0035 t=-3.5, p=0.002 t=-1.1, p=0.29
SAH (nmol/L) 35.7 6.74 30.87 10.56 t=1.65, p=0.11 56.1 18.25 30.14 8.25 p<0.0001 t=-4.9, p<0.0001 t=0.2, p=0.81
tHCY (umol/L) 9.78 2.27 8.04 2.31 t=2.22, p=0.03 10.57 3.64 7.97 1.9 p=0.0016 t=-1.4, p=0.19 t=0.18, p=0.86
MET (umol/L) 13.28 10.07 11.13 7.65 t=0.69, p=0.49 12.34 6.35 11.07 5.73 p=0.51 t=0.43, p=0.68 t=0.04, p=0.97
5-MTHF (nmol/L) 34.59 18.19 26.53 10.06 t=1.54, p=0.13 50.68 83.04 30.28 13.79 p=0.19 t=-1.0, p=0.32 t=-0.92, p=0.37
*

Based on two-sample t-test for SAMe versus Placebo.

**

Based on Fisher’s Protected Least Significant Difference (PLSD after adjusting for pre-treatment levels) for SAMe versus Placebo.

+

Paired t-test for pre and post treatment levels of intermediates for SAMe arm.

++

Paired t-test for pre and post treatment levels of intermediates for Placebo arm.