Embryonic exposure to diclofenac disturbs actin organization and leads to myofibril misalignment
The objective of this study was to investigate the embryotoxicity of diclofenac. Zebrafish (Danio rerio) embryos at 12 hpf were treated with different dosages of diclofenac (0–2,000 ppm) for different time courses (12–72 hr). Results showed no evident differences in survival rates or morphological c...
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Published in | Birth defects research. Part B. Developmental and reproductive toxicology Vol. 92; no. 2; pp. 139 - 147 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Hoboken
Wiley Subscription Services, Inc., A Wiley Company
01.04.2011
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Subjects | |
Online Access | Get full text |
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Summary: | The objective of this study was to investigate the embryotoxicity of diclofenac. Zebrafish (Danio rerio) embryos at 12 hpf were treated with different dosages of diclofenac (0–2,000 ppm) for different time courses (12–72 hr). Results showed no evident differences in survival rates or morphological changes between the mock‐treated control (0 ppm) zebrafish embryos and those with 1‐ppm diclofenac‐exposure (12–24, 12–36 hpf). In contrast, after higher doses (5 and 10 ppm) of exposure, embryos displayed some defective phenotypes, including malformed somite boundary, a twisted body axis, and shorter body length. In addition, diclofenac‐treated embryos exhibited significantly reduced frequencies of spontaneous in‐chorion contractions in comparison with mock‐control littermates (mock‐control: 13.20±2.24 vs. 5–10 ppm diclofenac: 6.66±1.35–3.03±1.84). Subtle changes were easily observed by staining with specific monoclonal antibodies F59 and phalloidin to detect morphological changes in muscle fibers and formation of F‐actin, respectively. Our data show that diclofenac treatment disturbs actin organization and muscle fiber alignment, thus causing malformed somite phenotypes. Birth Defects Res (Part B) 92:139–147, 2011. © 2011 Wiley‐Liss, Inc. |
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Bibliography: | The Zebrafish International Resource Center - No. P40 RR012546; No. NIH-NCRR istex:4D78D9A3F96D26050E15CDE34104A267353C16F8 ark:/67375/WNG-H70N281F-D ArticleID:BDRB20292 National Science Council, Republic of China - No. NSC 97-2313-B-032-001-MY3 Equal contribution. ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 1542-9733 1542-9741 1542-9741 |
DOI: | 10.1002/bdrb.20292 |