TABLE 5

Effect of chronic nicotine on α3β4-like binding


Region

Saline-Treated

Nicotine-Treated

Percentage of Control
fmol/mg ± S.E.M.
Visual cortex, layer 6 0.49 ± 0.074 0.37 ± 0.16 77
Medial habenula 85 ± 6.7 94 ± 4.2 112
Fasciculus retroflexus 32 ± 3.5 31 ± 1.2 97
Interpeduncular nucleus 81 ± 9.5 67 ± 5.9 83
Retrosplenial cortex, layer 1 0.54 ± 0.13 0.25 ± 0.23 46
Subiculum 2.0 ± 0.16 0.96 ± 0.12 48***
Substantia nigra, pars compacta 0.82 ± 0.18 0.59 ± 0.41 72
Ventral tegmental area 2.4 ± 0.16 1.9 ± 0.24 78
Optic tract 2.0 ± 0.22 2.5 ± 0.27 126
Cerebellum, granular layer 1.3 ± 0.028 1.17 ± 0.025 91*
Nucleus of the solitary tract, medial 4.0 ± 0.55 3.2 ± 0.87 81
Dorsal motor nucleus of the vagus 3.8 ± 0.30 5.2 ± 0.36 136*
Spinal trigeminal nucleus 2.0 ± 0.14 2.4 ± 0.29 121
Area postrema 7.8 ± 0.45 7.3 ± 0.44 93
Pineal gland
16 ± 3.8
17 ± 1.6
107
  • * p < 0.05; *** p < 0.001, compared to saline controls.