Table 2. Percentage of Myelinated Nerve Fiber Sheath Changes and Area Number Density.
This table gives individual values for cross-sectional area, myelinated nerve fiber density and age-related changes in myelin sheath morphology in the cingulate bundle and genu of the corpus callosum for 21 rhesus monkeys ranging in age from 4 to 32 years of age.
| Subject | Age | Sex | Hemispher | Cross-Sectional Area (mm^2) |
Myelinated: Nerve Fiber Profiles per 100μm2 |
% Abnormal Axons |
% Altered Myelin Sheaths |
% Paranodes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Genu | Cingulum | Genu | Cingulum | Genu | Cingulum | Genu | Cingulum | Genu | Cingulum | |||||||
| AM 058 | 3.8 | M | Right | - | - | 108 | - | 0.0 | - | 0.8 | - | 5.5 | - | |||
| AM 076 | 6.4 | F | Left | - | 3.5 | 109 | 73 | 0.0 | 0.0 | 0.3 | 0.3 | 6.0 | 5.8 | |||
| AM 129 | 6.7 | F | Left | 22.2 | 4.7 | 93 | 65 | 0.0 | 0.0 | 0.7 | 0.2 | 6.3 | 5.2 | |||
| AM 130 | 7.8 | F | Left | - | 2.6 | - | 68 | - | 0.1 | - | 0.8 | - | 5.5 | |||
| AM 047 | 9.0 | M | Left | - | 4.4 | 100 | 52 | 0.0 | 0.0 | 1.0 | 0.3 | 4.3 | 3.4 | |||
| AM 096 | 9.1 | F | Right | 22.9 | 3.0 | 106 | 67 | 0.0 | 0.0 | 0.5 | 0.6 | 5.3 | 6.3 | |||
| AM 053 | 9.7 | M | Left | 16.9 | 4.1 | 77 | 53 | 0.2 | 0.0 | 1.6 | 0.4 | 6.6 | 5.1 | |||
| Mean | 7.5 | 20.7 | 3.7 | 99 | 63 | 0.0 | 0.0 | 0.8 | 0.4 | 5.7 | 5.2 | |||||
| Std. Deviation | 1.9 | 3.3 | 0.8 | 12 | 8 | # | 0.1 | 0.0 | # | 0.5 | 0.2 | # | 0.8 | 1.0 | ||
| AM 042 | 12.2 | M | Left | 15.2 | 5.7 | 93 | 54 | 0.1 | 0.1 | 1.6 | 0.9 | 6.0 | 3.7 | |||
| AM 144 | 15.0 | M | Right | 20.9 | 4.2 | 73 | 55 | 0.2 | 0.1 | 3.0 | 1.3 | 6.0 | 5.3 | |||
| AM 143* | 15.8 | M | Left | 19.5 | 5.2 | 75 | 58 | 0.3 | 0.3 | 1.4 | 1.2 | 5.1 | 5.7 | |||
| AM 221 | 18.4 | F | Right | - | 2.9 | 94 | 58 | 0.3 | 0.5 | 5.7 | 1.8 | 6.5 | 3.4 | |||
| AM 209 | 19.2 | M | Right | - | 4.3 | 54 | 62 | 0.5 | 0.5 | 4.9 | 2.1 | 6.7 | 5.7 | |||
| AM 133 | 19.6 | M | Left | 18.3 | 4.6 | 74 | 51 | 0.6 | 0.3 | 6.0 | 4.1 | 5.8 | 5.2 | |||
| Mean | 16.7 | 18.5 | 4.5 | 77 | 56 | 0.3 | 0.3 | 3.8 | 1.9 | 6.0 | 4.8 | |||||
| Std. Deviation | 2.6 | 2.4 | 1.0 | 15 | 4 | # | 0.2 | 0.2 | # | 2.0 | 1.2 | # | 0.6 | 1.0 | ||
| AM 100 | 24.7 | F | Left | 5.8 | 3.6 | 91 | 59 | 0.7 | 0.4 | 5.8 | 6.6 | 7.9 | 7.4 | |||
| AM 019 | 24.7 | F | Left | 9.9 | - | 80 | - | 1.0 | - | 7.4 | - | 8.4 | - | |||
| AM 062 | 27.5 | M | Right | - | 2.7 | 82 | 47 | 0.4 | 0.5 | 7.6 | 7.4 | 8.8 | 6.4 | |||
| AM 027 | 27.97 | M | Right | - | - | 94 | - | 0.4 | - | 9.1 | - | 8.2 | - | |||
| AM 026 | 29.1 | F | Left | - | 3.7 | 95 | 64 | 0.7 | 0.2 | 7.0 | 5.8 | 7.0 | 6.4 | |||
| AM 091 | 31.5 | M | Left | - | 3.4 | 61 | 42 | 0.7 | 0.5 | 8.3 | 6.3 | 11.3 | 8.9 | |||
| AM 041 | 32.0 | F | Right | - | 4.1 | - | 44 | - | 0.9 | - | 7.5 | - | 8.4 | |||
| AM 023* | 32.3 | F | Left | - | 5.6 | - | 49 | - | 0.7 | - | 8.2 | - | 4.4 | |||
| Mean | 29.3 | 7.9 | 3.9 | 84 | 49 | 0.6 | 0.6 | 7.9 | 7.0 | 8.7 | 6.9 | |||||
| Std. Deviation | 2.6 | 2.9 | 1.1 | 13 | 9 | # | 0.2 | 0.3 | # | 0.8 | 1.0 | # | 1.6 | 1.8 | ||
*
Exact age unknown