ZFIN ID: ZDB-FIG-120815-50
Tsai et al., 2012 - The paracrine effect of exogenous growth hormone alleviates dysmorphogenesis caused by tbx5 deficiency in zebrafish (Danio rerio) embryos. Journal of Biomedical Science   19(1):63 Full text @ J. Biomed. Sci.
Knockdown Reagent:
Observed In:
Stage Range: Long-pec to Day 4

Fig. 1 Phenotypes oftbx5knockdown and GH-treated zebrafish embryos. The normal appearance of hearts in wild-type (WT) (A) and MIS (C) group embryos and string-like hearts occurring in MO (B) group embryos are depicted. In WTGH embryos (D), hearts are identical to those of the WT (A) group, and hearts of MOGH group embryos (E) showed improvements. No significant differences were observed in trunks of WT (F), MIS (H), and WTGH group embryos (I), in which trunks were straight and somites appeared “V-shaped.” On the other hand, trunks of embryos injected with tbx5-MO were severely bent (G) and had “U-shaped” somites, but these were partially restored in MOGH group embryos (J). In the MO group (L), truncated or undeveloped pectoral fins were demonstrated; nevertheless, WT (K) embryos micro-injected with mismatched tbx5-MO (M), WT (N) exogenous GH–treated embryos, and tbx5-deficient embryos exhibited normal appearances. Statistically, the normal morphogenetic rates of the heart (P), trunk (Q), and pectoral fins (R) were significantly lower in the MO group and partially improved in the MOGH group. Defective embryos were not found in the WT or MIS groups and almost all of the embryos in the WTGH group developed properly. Data are presented as mean ± S.D. *p < 0.05 vs. WT; #p < 0.05 MO + GH vs. MO. Black arrowhead, defect site; dashed line, shape of somite border; MO, tbx5 knockdown; MIS, mismatch tbx5-MO-treated embryos; WTGH, WT embryos treated with GH; MOGH, tbx5-MO- and GH-treated embryos.

Gene Expression Details No data available
Antibody Labeling Details No data available
Phenotype Details
Fish Conditions Stage Phenotype
WT + MO1-tbx5a standard conditions Long-pec cardiac ventricle decreased contractility, abnormal
Long-pec heart edematous, abnormal
Long-pec heart morphology, abnormal
Long-pec somite U-shaped, abnormal
Long-pec trunk bent, abnormal
Day 4 pectoral fin aplastic, abnormal
Day 4 pectoral fin truncated, abnormal
ZFIN wishes to thank the journal Journal of Biomedical Science for permission to reproduce figures from this article. Please note that this material may be protected by copyright. Full text @ J. Biomed. Sci.