The embryonic development of frogs under strong DC magnetic fields

Journal Article · Sat Sep 01 00:00:00 EDT 1984 · IEEE Trans. Magn.; (United States)

DOI:https://doi.org/10.1109/TMAG.1984.1063262· OSTI ID:6457526

Ueno, S; Harada, K; Shiodawa, K

Possible influence of d.c. magnetic fields in the early embryonic development of frogs was studied. Embryos of African clawed toads, Xenopus laevis, were exposed to 1.0 T magnetic fields with different gradients of a range from 10 T/m to 10/sup 3/ T/m either during cleavage to neurula stage, blastula to neurula stage, or neurula to tail bud stage. The developmental processes of embryos during and after magnetic field exposures were followed to examine a possibility of teratogenic effects. The results suggest that the magnetic field exerts no harmful or modifying effects on the important morphogenetic movements such as gastrulation and neurulation. However, it was observed that embryos which were exposed to the gradient magnetic fields during cleavage to neurula stage occasionally developed into tadpoles with reduced pigmentation or some axial anomalies such as the formation of curled tail. Tadpoles with edema or microcephaly were also observed. Compared with the control, the rate of malformation was higher by about 35 %. The influence of oxygen concentration in Ringer's solution on the embryonic development was also studied, and toxicity of oxygen with high concentration is discussed.

• Research Organization: Kyushu University, Fukuoka
• OSTI ID: 6457526
• Journal Information: IEEE Trans. Magn.; (United States), Vol. MAG-20:5
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
EMBRYOS
MAGNETIC FIELDS
ONTOGENESIS
FROGS
LARVAE
DIRECT CURRENT
EDEMA
MALFORMATIONS
NEUROLOGY
OXYGEN
PIGMENTS
TERATOGENESIS
TOXICITY
AMPHIBIANS
ANIMALS
AQUATIC ORGANISMS
CURRENTS
ELECTRIC CURRENTS
ELEMENTS
MEDICINE
NONMETALS
PATHOLOGICAL CHANGES
SYMPTOMS
VERTEBRATES
550300* - Cytology