Table 2.
Number of branching points and branches in basilar and apical dendrites on pyramidal neurons in PFC subareas.
| Control | Stress | |||||||
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| IL | PL | ACx | IL | PL | ACx | |||
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| Basilar dendrites | Total number of branching points | L | 17.3 ± 2.7 (9) | 13.8 ± 0.7 (5) | 18.8 ± 2.9 (9) | 13.3 ± 1.7 (9) | 13.4 ± 1.5 (11) | 15.3 ± 2.1 (7) |
| R | 11.5 ± 1.3 (7) | 13.1 ± 1.2 (5) | 16.7 ± 2.0 (9) | 11.7 ± 1.7 (9) | 12.5 ± 1.0 (12) | 13.3 ± 2.3 (7) | ||
| Total number of branches | L | 40.6 ± 5.6 (9) | 35.3 ± 1.7 (5) | 44.6 ± 6.2 (9) | 32.2 ± 4.1 (9) | 30.3 ± 3.7 (11) | 37.7 ± 4.1 (7) | |
| R | 30.5 ± 2.6 (7) | 32.8 ± 2.7 (5) | 41.3 ± 4.2 (9) | 30.4 ± 3.9 (9) | 31.9 ± 2.2 (12) | 32.9 ± 4.9 (7) | ||
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| Apical dendrites | Total number of branching points | L | 12.4 ± 1.5 (9) | 11.7 ± 0.8 (5) | 13.0 ± 1.5 (9) | 11.0 ± 2.3 (9) | 11.6 ± 2.0 (11) | 11.0 ± 2.3 (7) |
| R | 15.1 ± 2.4 (7) | 17.3 ± 2.9 (5) | 14.7 ± 1.6 (9) | 13.6 ± 2.9 (9) | 10.5 ± 0.8 # (12) | 13.6 ± 2.9 (7) | ||
| Total number of branches | L | 25.1 ± 2.7 (9) | 24.5 ± 1.8 (5) | 27.0 ± 2.9 (9) | 23.3 ± 4.8 (9) | 25.1 ± 4.1 (11) | 23.3 ± 4.8 (7) | |
| R | 31.4 ± 4.9 (7) | 36.1 ± 5.9 (5) | 30.8 ± 3.2 (9) | 28.4 ± 5.8 (9) | 22.8 ± 1.7 (12) | 28.4 ± 5.8 (7) | ||
| Number of branches (order 3) | L | 2.9 ± 0.3 (9) | 2.9 ± 0.4 (5) | 3.1 ± 0.4 (6) | 2.8 ± 0.4 (7) | 3.3 ± 0.3 (9) | 2.3 ± 0.3 (6) | |
| R | 2.8 ± 0.4 (6) | 4.0 ± 0.2 (5) | 2.4 ± 0.2 (5) | 2.5 ± 0.3 (7) | 2.9 ± 0.3 # (8) | 4.1 ± 0.7 * # (6) | ||
| Number of branches (order 4) | L | 2.9 ± 0.3 (9) | 2.7 ± 0.3 (5) | 3.1 ± 0.4 (6) | 2.9 ± 0.4 (7) | 3.7 ± 0.6 (9) | 2.7 ± 0.4 (6) | |
| R | 4.3 ± 0.8 * (6) | 3.1 ± 0.4 (5) | 4.0 ± 0.5 (5) | 3.5 ± 0.3 (7) | 3.3 ± 0.4 (8) | 3.7 ± 0.8 (7) | ||
| Number of branches (order 5) | L | 3.8 ± 0.3 (9) | 2.5 ± 0.4 (5) | 3.3 ± 0.3 (6) | 3.7 ± 0.6 (7) | 4.1 ± 0.8 (8) | 3.2 ± 0.7 (5) | |
| R | 3.1 ± 0.4 (6) | 3.6 ± 0.2 (5) | 3.8 ± 0.5 (5) | 3.6 ± 0.5 (7) | 3.1 ± 0.3 (8) | 3.0 ± 0.4 (7) | ||
| Number of branches (order 6) | L | 4.2 ± 0.6 (9) | 2.8 ± 0.3 (5) | 3.8 ± 0.8 (6) | 4.0 ± 0.6 (7) | 5.6 ± 1.0 (8) | 2.5 ± 0.5 (5) | |
| R | 2.3 ± 0.3 * (6) | 4.6 ± 1.2 (5) | 4.2 ± 1.2 (5) | 3.6 ± 0.3 (7) | 3.0 ± 0.3 (8) | 3.7 ± 1.0 (7) | ||
| Number of branches (order 11) | L | 0 ± 0 (0) | 2.2 ± 0.9 (3) | 0 ± 0 (0) | 0 ± 0 (0) | 3.1 ± 0.7 (3) | 3.3 ± 0.7 (3) | |
| R | 6.0 ± 0.0 * (3) | 2.5 ± 0.8 (3) | 2.0 ± 1.1 (3) | 3.3 ± 0.8 (3) | 3.0 ± 1.0 (3) | 0 ± 0 # (0) | ||
| Number of branches (order 12) | L | 0 ± 0 (0) | 0 ± 0 (0) | 0 ± 0 (0) | 0 ± 0 (0) | 0 ± 0 (0) | 0 ± 0 (0) | |
| R | 2.7 ± 0.6 ** (3) | 0 ± 0 (0) | 0 ± 0 (0) | 0 ± 0 ## (0) | 0 ± 0 (0) | 0 ± 0 (0) | ||
*P < .05, **P < .01 significant differences between right (R) and left (L); # P < .05, ## P < .01 significant difference to control as determined by ANOVA with Bonferroni's post hoc test. Numbers in parentheses indicate number of animals from which data (means ± SEM) were derived (n). Abbreviations: IL, infralimbic cortex; PL, prelimbic cortex; ACx, anterior cingulate cortex.