Table 2.
Effects of IR exposure on index levels and rhythm parameter of male reproductive function
| Reproductive index | Groups | CT 3:00 | CT 7:00 | CT 11:00 | CT 15:00 | CT 19:00 | CT 23:00 | M | A | ω | ϕ |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Daily sperm production (106/(g*d)) |
Control | 14.16±1.53 | 18.18±2.24 | 9.80±1.01 | 8.45±0.97 | 4.88±0.37 | 11.68±1.06 | 11.19 | 5.52 | 15 | 81.63 |
| IR | 8.75±0.98* | 9.33±0.99* | 17.09±2.13* | 25.50±2.45* | 26.73±3.19* | 20.72±2.32* | 18.02* | 9.95* | 15 | 262.60 | |
|
Sperm motility (%) |
Control | 73.02±7.45 | 75.64±5.72 | 64.51±5.58 | 58.51±4.97 | 51.01±6.20 | 63.79±5.51 | 64.41 | 11.46 | 15 | 84.66 |
| IR | 31.53±3.79* | 46.60±5.08* | 28.39±4.31* | 20.47±2.11* | 18.70±2.34* | 20.18±2.76* | 27.64* | 12.54 | 15 | 101.25* | |
|
Testosterone (ng/ml) |
Control | 8.04±0.68 | 9.14±0.91 | 7.68±0.82 | 7.11±0.81 | 5.90±0.72 | 7.60±0.81 | 7.58 | 1.27 | 15 | 93.75 |
| IR | 8.02±0.91 | 8.20±0.88 | 7.67±0.78 | 6.99±0.83 | 6.81±0.34 | 7.67±0.91 | 7.56 | 0.70* | 15 | 79.99 |
Note: Date are means ± standard error for DSP, sperm motility, and testosterone levels. Asterisks indicate a significant difference from control at p < .05 at different Control Time (CT) hours. The data obtained were then fitted by the least squares method for cosinor analysis, M is the median of the rhythm, A represents the amplitude of the rhythm, ω is the radial frequency (15 °/h) and φ is the peak phase of the rhythm. The experimental mice were subjected to whole-body irradiation of 3 Gy X-rays at different Control Time (CT) hours: CT 3:00, CT 7:00, CT 11:00, CT 15:00, CT 19:00, and CT 23:00, respectively. Control mice were handled in the same manner as those in radiation-exposed groups but without X-ray. IR, ionizing radiation