Influence of 60-Hz magnetic fields on sea urchin development
| Autor: | Selma Zimmerman, Ivan L. Cameron, Wendell D. Winters, Arthur M. Zimmerman |
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| Rok vydání: | 1990 |
| Předmět: |
animal structures
biology Physiology Ontogeny Embryogenesis Biophysics Embryo General Medicine Anatomy biology.organism_classification Blastula Strongylocentrotus purpuratus Cell biology Gastrulation Electromagnetic Fields Human fertilization Sea Urchins biology.animal embryonic structures Animals Radiology Nuclear Medicine and imaging Electromagnetic Phenomena human activities Sea urchin Cell Division |
| Zdroj: | Bioelectromagnetics. 11:37-45 |
| ISSN: | 1521-186X 0197-8462 |
| DOI: | 10.1002/bem.2250110106 |
| Popis: | Continuous exposure of sea urchin (Strongylocentrotus purpuratus) embryos at 18 degrees C to a cyclic 60-Hz magnetic field at 0.1 mT rms beginning 4 min after insemination caused a significant developmental delay during the subsequent 23 hours. No delay in development was recorded for periods up to 18 hours after fertilization. At 18 h, most embryos were in the mesenchyme blastula stage. At 23 h, most control embryos were in mid-gastrula whereas most magnetic-field-exposed embryos were in the early gastrula stage. Thus an estimated 1-h delay occurred between these developmental stages. The results are discussed in terms of possible magnetic-field modification of transcription as well as interference with cell migration during gastrulation. The present study extends and supports the growing body of information about potential effects of exposures to extremely-low-frequency (ELF) magnetic fields on developing organisms. |
| Databáze: | OpenAIRE |
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