showed a trendp = 0.121
On day 12, although the individual PGF 2 α and PGE 2 levels showed a trend of increase and decrease, respectively, these changes were not statistically significant compared with those in the control group (PGF 2α : 201.40 pg/mg, p = 0.121; PGE 2 : 459.20 pg/mg, p = 0.134).