Id |
Subject |
Object |
Predicate |
Lexical cue |
T1 |
107-122 |
DRI_Approach |
denotes |
The Frog Embryo |
T2 |
151-222 |
DRI_Approach |
denotes |
(FETAX) was used to assess the teratogenic potential of two tocolytics. |
T3 |
223-321 |
DRI_Background |
denotes |
Embryos of the South African clawed frog, Xenopus laevis, were exposed to ritodrine or nifedipine. |
T4 |
322-385 |
DRI_Background |
denotes |
Exposure media were changed and monitored at 24-hour intervals. |
T5 |
653-839 |
DRI_Outcome |
denotes |
Nifedipine was determined to be the more toxic and teratogenic than ritodrine, with a LC50 of 0.606 µg/L, an EC50 of 0.006 µg/L, and a teratogenicity Index (TI) value (LC50/EC50) of 101. |
T6 |
840-897 |
DRI_Outcome |
denotes |
On the other hand, the LC50 of ritodrine was 28.571 mg/L. |
T7 |
898-1073 |
DRI_Background |
denotes |
In addition; the LC50, EC50 and TI values for nifedipine in the 5 mg/L ritodrine + nifedipine combination group were determined as 1.050 µg/L, 0.868 µg/L and 1.5 respectively. |
T8 |
1074-1167 |
DRI_Approach |
denotes |
For ritodrine, the NOAEC and LOAEC values were determined as 2 mg/L and 4 mg/L, respectively. |
T9 |
1168-1309 |
DRI_Background |
denotes |
For the nifedipine and the ritodrine + nifedipine groups; while the LOAEC values of these groups were 0.0001 µg/L and 0.1 µg/L, respectively. |
T10 |
1310-1345 |
DRI_Approach |
denotes |
NOAEC value couldn't be determined. |
T11 |
1346-1469 |
DRI_Outcome |
denotes |
Our results demonstrated that nifedipine administration was associated with higher levels of teratogenic and toxic effects. |
T12 |
1470-1598 |
DRI_Background |
denotes |
However, the ritodrine + nifedipine combination form reduced the toxic and teratogenic effects of nifedipine on Xenopus embryos. |
T13 |
1599-1753 |
DRI_Approach |
denotes |
Further studies should be conducted in order to investigate the optimal combination concentrations of these substances for the treatment of preterm labor. |