Tables 5a and 5b. Bisphenol A: Reproduction and Fertility Assessment in CD-1 Mice When Administered in the Feed ( Reel et al. 1985).
Table 5a - TASK 1. Two-Week Dose-Range Finding Study for Continuous Breeding Study. (a) Clinical signs of toxicity consisted of dehydration, dyspnea, lethargy, tremors, ptosis, piloerection, diarrhea and moribundity.
| Dietary Feed (%) (8/Sex/Group) |
0 |
0.31 |
0.62 |
1.25 |
2.5 |
5.0 |
| Clinical Signs | No |
No |
No |
No |
Yes (a) |
Yes (a) |
| Mortality (%) | 0 |
0 |
0 |
0 |
0 |
75.0 (a) |
| Final Male Body Wt. (g) | 33.3 |
34.2 |
32.9 |
30.8 |
28.5 |
23.5 |
| Final Female Body Wt. (g) | 27.0 |
27.6 |
27.6 |
25.7 |
24.0 |
17.8 |
Table 5b - TASK 2. Continuous Breeding Phase, Consisting of a 7-Day Premating Exposure, 98-Day Cohabitation Period and a 21-Day Segregation Period.
| Dose Level (mg) (#/Sex/Group) (mg/kg/day) |
0 (40) (0) |
0.25 (20) (438) |
0.50 (20) (875) |
1.0 (20) (1750) |
||||
| M | F | M | F | M | F | M | F | |
| Body Weight (Week 1) (g) | 34.3 | 27.1 | 34.6 | 27.2 | 34.3 | 27.0 | 33.3 | 26.8 |
| Body Weight (Week 18) (g) | 39.0 | 45.1 | - | 46.7 | - | 41.7 | 35.8 | 38.2 |
| No. Fertile/No. Cohabited | 37/37 | 19/19 | 18/19 | 20/20 | ||||
| Fertility Index (%) | 100 | 100 | 95 | 100 | ||||
| # Litters/pair | 4.97 | 4.89 | 4.72 | 4.50 | ||||
| # Live Pups/Litter (Comb. M/F) | 12.07 | 11.20 | 9.67 (b) | 6.30 (b) | ||||
| Sex of Pups Born Alive (M/Total) | 0.50 | 0.48 | 0.49 | 0.54 | ||||
| % Pups Born Alive | 99 | 99 | 99 | 95 (b) | ||||
| Live Pup Weight (g) | 1.56 | 1.57 | 1.64 (b) | 1.65 (a) | ||||
| Postpartum F0 Dam Wt. Litter 1 | 35.13 | 35.27 | 24.59 | 32.31 (b) | ||||
| Postpartum F0 Dam Wt. Litter 2 | 38.15 | 38.99 | 37.0 | 35.67 (b) | ||||
| Postpartum F0 Dam Wt. Litter 3 | 38.86 | 38.68 | 39.16 | 36.68 (b) | ||||
| Postpartum F0 Dam Wt. Litter 4 | 41.06 | 41.09 | 40.55 | 38.01 (b) | ||||
| Postpartum F0 Dam Wt. Litter 5 | 41.26 | 42.13 | 40.02 | 37.50 (b) | ||||
(a) Significantly different (p <0.05) (b) Significantly different (p < 0.01)
(b) Significantly different (p <0.05) (b) Significantly different (p < 0.01)
Notes: Indications of non-estrogenicity included no
significant changes in fertility index, # litters/pair and sex ratio. Significant
changes in # live pups/litter, % pups born alive, live pup weight and postpartum
dam weights may be attributed to generalized maternal toxicity. The maternal
and fetal NOEL for this study is 0.25% BPA in dietary feed (438 mg/kg/day).
Table 5c. Bisphenol A: Reproduction and Fertility Assessment in CD-1 Mice When Administered in the Feed ( Reel et al. 1985).
| Dietary Feed (%) (#/Sex/Group) (mg/kg/day) |
0 (40) (0) |
0.25 (20) (438) |
0.50 (20) (875) |
1.0 (20) (1750) |
||||
| M | F | M | F | M | F | M | F | |
| Body Weight at Birth (g) | 1.64 | 1.57 | 1.61 | 1.56 | 1.82 | 1.72 | 1.78 | 1.70 |
| Body Weight at Day 74 (g) | 33.93 | 27.22 | 33.75 | 27.04 | 34.13 | 28.61 | 32.62 | 26.87 |
| Liver Wt. (g) | 1.92 | 1.87 | 2.07 | 1.95 | 2.10 | 2.18(b) | 2.52(b) | 2.22(b) |
| Kidneys/ Adrenals Wt. (g) | 0.70 | 0.48 | 0.81(b) | 0.53(b) | 0.85(b) | 0.56(b) | 0.84(b) | 0.54(b) |
| # Copulatory Plugs/ # Cohabited | 19/20 | 19/19 | 20/20 | 10/11 | ||||
| Mating and Fertility Index (%) | 95 | 100 | 100 | 91 | ||||
| # Live Pups/ Litter (Comb. M/F) | 11.00 | 10.74 | 12.35 | 10.90 | ||||
| % Pups Born Alive | 95 | 95 | 100 | 99 | ||||
| Live Pup Weight (g) | 1.46 | 1.49 | 1.47 | 1.43 | ||||
| Postpartum F1 Dam Wt. Litter 1 | 34.33 | 33.94 | 34.84 | 32.68 | ||||
| Left Testis/ Epididymis (mg) | 196 | 194 | 178 (b) | 179 (a) | ||||
| Right Testis (mg) | 141 | 136 | 126 (b) | 133 | ||||
| Right Epididymis (mg) | 55 | 49 (a) | 46 (b) | 45 (b) | ||||
| Prostate (mg) | 42 | 45 | 46 | 48 | ||||
| Seminal Vesicles (mg) | 341 | 304 | 314 | 248 | ||||
| % Motile Sperm | 75.32 | 63.85 | 51.75 (b) | 69.55 | ||||
| Sperm Concentration ( No. Sperm x 1000/mg caudal tissue) |
651.03 | 691.87 | 583.04 | 535.15 | ||||
| % Abnormal Sperm | 7.89 | 9.35 | 6.84 | 7.47 | ||||
| % Tailless Sperm | 12.23 | 13.86 | 12.99 | 16.84 | ||||
(a) Significantly different (p <0.05) (b) Significantly
different (p < 0.01)
(b) Significantly different (p <0.05) (b) Significantly different (p <
0.01)
Notes: Generalized toxicity was evident and included significant effects on the liver, kidneys and adrenals. Indications of non-estrogenicity include no significant changes in fertility and mating indexes, % pups born alive, % abnormal sperm, % tailless sperm and weights of the testis, epididymis and prostate. Possible indications of estrogenicity include decreases in # live pups/litter, seminal vesicle weight, % motile sperm and sperm concentration. All signficant effects may be due to generalized maternal toxicity. A NOEL for this study was not established but only one dose level was administered (1% or 1750 mg/kg/day).
Table 5d. Bisphenol A: Reproduction and Fertility Assessment in CD-1 Mice When Administered in the Feed ( Reed et al. 1985) Table 5d - TASK 4. F1 Offspring Reproductive Assessment. (a) Significantly different (p <0.05) (b) Significantly different (p < 0.01)
| Treatment Group | Control Male & Female |
Combined Control Males |
Combined Control Females |
1.0% BPA Male & Control Females |
Control Male & 1.0% BPA Female |
| # Copulatory Plug/# Cohabited | 17/19 |
- |
- |
18/19 |
18/19 |
| Mating Index (%) | 89 |
- |
- |
95 |
95 |
| # Fertile/# Cohabited | 16/19 |
- |
- |
17/19 |
16/19 |
| Fertility Index (%) | 84 |
- |
- |
89 |
84 |
| # Live Pups/Litter (Comb. M/F) | 11.31 |
- |
- |
8.41 (a) |
5.50 (b) |
| % Pups Born Alive | 99 |
- |
- |
92 |
94 |
| Sex of Pups Born Alive (M/Total) | 0.53 |
- |
- |
0.53 |
0.45 |
| Adjusted Live Pup Weight (g) | 1.61 |
- |
- |
1.71 |
1.81 (b) |
| Postpartum F0 Dam Wt. Litter 1 | 40.30 |
- |
- |
- |
38.51 |
| Body Wt. (g) | - |
36.55 |
35.78 |
35.37 |
34.19 (a) |
| Liver Wt. (g) | - |
2.00 |
2.17 |
2.49 (b) |
2.62 (b) |
| Kidneys/Adrenals Wt. (g) | - |
0.80 |
0.64 |
0.92 (b) |
0.67 |
| Left Testis/Epididymis Wt. (mg) | - |
194 |
- |
188 |
- |
| Right Testis Wt. (mg) | - |
133 |
- |
129 |
- |
| Right Epididymis Wt. (mg) | - |
53 |
- |
53 |
- |
| Prostate (mg) | - |
55 |
- |
53 |
- |
| Seminal Vesivles (mg) | - |
457 |
- |
358 (b) |
- |
| % Motile Sperm | - |
64.30 |
- |
39.00 (b) |
- |
| Sperm Concentration (# Sperm x 1000/mg caudal tissue) |
- |
258.27 |
- |
182.80 |
- |
| % Abnormal Sperm | - |
10.85 |
- |
9.29 |
- |
| % Tailless Sperm | - |
17.38 |
- |
17.14 |
- |
Notes: Generalized toxicity was evident
and included significant effects on the liver, kidneys and adrenals. Indications
of non-estrogenicity include no significant changes in fertility and mating
indexes, % pups born alive, live pup weight, prostate weight, sperm concentration,
% abnormal sperm and % tailless sperm. Possible indications of estrogenicity
include decreases % motile sperm and decreases in testis, epididymis and seminal
vesicle weight. All significant effects may be due to generalized maternal toxicity.
There is not a maternal or fetal NOEL for this study. For risk assessment purposes,
this study is superceded by the 90-day reproduction and toxicity studies conducted
by Wazeter, 1976 (Table 1) and Goldenthal, 1978 (Table 2), which estimated the
maternal and fetal NOEL to be 50 mg/kg/day. A similar value for an estimated
NOEL can be derived from this study by dividing the LOEL of 438 mg/kg/day by
a factor of 10.