Table 2.
List of differentially expressed proteins in adult mouse spermatozoa following gestational exposure to BPA.
| Protein | Symbol | gi Number | Peptide sequence | Matched peptide | Sequence coverage (%) | MASCOT scorea | Relative intensity | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Controlb | TDIc | NOAELd | LOAELe | |||||||
| Phospholipid hydroperoxide glutathione peroxidase | PHGPX | gi|2522259 | R.YGPMEEPQVIEK.D | 710.35 | 6.09 | 66 | 1.00 | 0.53 ± 0.18 | 0.43 ± 0.04* | 0.40 ± 0.08* |
| ATP synthase subunit O, mitochondrial | ATP5O | gi|20070412 | K.VSLAVLNPYIK.R | 608.87 | 5.16 | 52 | 1.00 | 0.34 ± 0.06**** | 0.40 ± 0.01**** | 0.45 ± 0.07*** |
| Glutathione S-transferase Mu | GSTM5 | gi|6754086 | K.LTFVDFLTYDVLDQN.R | 980 | 7 | 45 | 1.00 | 0.35 ± 0.08** | 0.50 ± 0.12** | 0.43 ± 0.07** |
| NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 10, mitochondrial | NDUFA10 | gi|13195624 | R.LQSWLYASR.L | 562.3 | 10.11 | 33.3 | 1.00 | 0.50 ± 0.19 | 0.51 ± 0.17 | 0.20 ± 0.04* |
| Isoaspartyl peptidase/ʟ‑asparaginase | ASRGL1 | gi|81875980 | K.FAEDMGIPQVPVEK.L | 780.4 | 4.29 | 65 | 1.00 | 3.99 ± 0.17* | 4.14 ± 0.72* | 3.36 ± 0.43* |
| Superoxide dismutase [Mn], mitochondrial | SOD2 | gi|31980762 | K.GDVTTQVALQPALK.F | 720.39 | 6.3 | 55 | 1.00 | 2.82 ± 0.40** | 2.79 ± 0.39* | 2.80 ± 0.13** |
| Notes: BPA, bisphenol A; gi Number, GenInfo Identifier; LOAEL, lowest observed adverse effect level; NOAEL, no observed adverse effect level; TDI, tolerable daily intake value. Relative spot intensity of PHGPX (*p < 0.05, compared with control), ATP5O (***p < 0.001 and ****p < 0.0001, compared with control), GSTM5 (**p < 0.01, compared with control), NDUFA10 (*p < 0.05, compared with control), ASRGL1 (*p < 0.05, compared with control), and SOD2 (*p < 0.05 and **p < 0.01, compared with control) are presented as the mean ± SEM (n = 3 mice/replicate). Data were analyzed by one-way analysis of variance (ANOVA) with multiple comparisons, with Tukey’s multiple comparison test. aMASCOT score is –log10(p), where p is the probability that the observed match is a random event. Individual scores > 30 indicate identity or extensive homology (p < 0.05). bCorn oil. cTDI = 50 μg/kg bw/day. dNOAEL = 5 mg/kg bw/day. eLOAEL = 50 mg/kg bw/day. | ||||||||||