Skip to main content
. Author manuscript; available in PMC: 2009 Jul 9.
Published in final edited form as: Eur J Pharmacol. 2007 Jul 24;573(1-3):124–132. doi: 10.1016/j.ejphar.2007.06.063

Figure 6.

Figure 6

Effects of nicotine on substance P (SP; Fig. 6A) and metenkephalin (MENK; Fig. 5B) systems, in the ventral tegmental area. Animals received injections of nicotine (as described for Fig. 1) or saline and killed 12 and 24 h following the treatment. Results are expressed as percentages of control and represent mean values ± S.E.M. (n= 8 control and 9 drug-treated animals per group). The average control values of SPLI and MENK-LI concentrations for ventral tegmental area were 1036 ± 105 and 2446 ± 172 pg/mg protein, respectively. *P < 0.05 vs. control.