Table 2.
Individual Data of Perisomatic Inhibitory Synapse Numbers and Morphology
| Control # 1 | Control # 2 | Control # 3 | Control # 4 | Control # 5 | Stress # 1 | Stress # 2 | Stress # 3 | Stress # 4 | |
|---|---|---|---|---|---|---|---|---|---|
| Number of analyzed CA1 pyramidal neurons | 177 | 101 | 101 | 106 | 106 | 124 | 111 | 160 | 115 |
| Number of analyzed terminals | 886 | 420 | 394 | 425 | 413 | 578 | 497 | 779 | 453 |
| Number of terminals/soma cross section | 5.0 ± 0.1 | 4.2 ± 0.2 | 3.9 ± 0.2 | 4.0 ± 0.2 | 3.9 ± 0.1 | 4.7 ± 0.2 | 4.5 ± 0.2 | 4.9 ± 0.1 | 3.9 ± 0.1 |
| Number of terminals/100 µm cell perimeter | 11.3 ± 0.4 | 9.9 ± 0.6 | 9.2 ± 0.6 | 8.9 ± 0.5 | 11.3 ± 0.4 | 10.1 ± 0.4 | 10.4 ± 0.5 | 10.3 ± 0.4 | 11.4 ± 0.5 |
| Estimated number of terminals/soma | 70.5 ± 2.8 | 56.4 ± 1.7 | 53.8 ± 1.5 | 58.8 ± 2.3 | 43.7 ± 1.4 | 69.3 ± 2.2 | 63.0 ± 2.6 | 73.9 ± 3.2 | 42.9 ± 1.2 |
| Average soma perimeter (micrometer) | 44.2 ± 0.8 | 41.9 ± 0.6 | 43.2 ± 0.6 | 45.0 ± 1.0 | 34.6 ± 0.6 | 46.4 ± 0.6 | 42.9 ± 1.0 | 47.3 ± 1.0 | 34.6 ± 0.5 |
| Synapse/terminal ratio (%) | 31.7 | 32.4 | 34.3 | 32.5 | 29.9 | 36.2 | 36.0 | 29.0 | 32.97 |
| Synapse number/100 terminal | 124.5 | 117.8 | 119.1 | 112.7 | 123.8 | 116.5 | 127.8 | 117.9 | 115.7 |
| Average terminal length (nanometer) | 980.9 ± 27.3 | 977.2 ± 36.4 | 868.6 ± 22.7 | 877.2 ± 28.8 | 896.8 ± 30.3 | 889.1 ± 38.8 | 941.6 ± 38.8 | 955.5 ± 36.3 | 807.2 ± 25.1 |
Note the minimal differences between the individual rats. Data are expressed as mean ± S.E.M.