Biomaterial Database

[Biological effects of pulsing electromagnetic fields (PEMFs) on ICR mice]. 1987

U Nishikawa

Department of Orthopaedics, Shimane Medical School, Japan.

Three experiments were performed to determine the biological effects of PEMFs (5-16 Gauss, induced voltage 1.2-13.5 mV) on ICR mice. Pregnant mice were exposed to PEMFs for 8 hrs/day between the 6th and 15th day of gestation (dg) in Exp. I, and for 24 hrs/day between 0 and 18 dg in Exp. II and III. Dams were sacrificed on 18 dg, and fetuses were examined for external, visceral and skeletal anomalies in Exp. I and II. In Exp. III, all animals spontaneously delivered and their offspring were examined for behavioral development. Dams exposed to PEMFs in Exp. II exhibited slightly decreased body weights on 5, 7-10 dg. In Exp. III, body weights of offspring exposed to PEMFs were increased on days 8-21, and behavioral development was transiently accelerated. In Exp. I-III, exposure to PEMFs during the gestation had no significant detrimental effects on the pregnancy, or prenatal and postnatal development.

UI	MeSH Term	Description	Entries
D008813	Mice, Inbred ICR	An inbred strain of mouse that is used as a general purpose research strain, for therapeutic drug testing, and for the genetic analysis of CARCINOGEN-induced COLON CANCER.	Mice, Inbred ICRC,Mice, ICR,Mouse, ICR,Mouse, Inbred ICR,Mouse, Inbred ICRC,ICR Mice,ICR Mice, Inbred,ICR Mouse,ICR Mouse, Inbred,ICRC Mice, Inbred,ICRC Mouse, Inbred,Inbred ICR Mice,Inbred ICR Mouse,Inbred ICRC Mice,Inbred ICRC Mouse
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D011270	Pregnancy, Animal	The process of bearing developing young (EMBRYOS or FETUSES) in utero in non-human mammals, beginning from FERTILIZATION to BIRTH.	Animal Pregnancies,Animal Pregnancy,Pregnancies, Animal
D001835	Body Weight	The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.	Body Weights,Weight, Body,Weights, Body
D004574	Electromagnetic Fields	Fields representing the joint interplay of electric and magnetic forces.	Electromagnetic Field,Field, Electromagnetic,Fields, Electromagnetic
D005260	Female		Females
D005333	Fetus	The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN.	Fetal Structures,Fetal Tissue,Fetuses,Mummified Fetus,Retained Fetus,Fetal Structure,Fetal Tissues,Fetus, Mummified,Fetus, Retained,Structure, Fetal,Structures, Fetal,Tissue, Fetal,Tissues, Fetal
D005865	Gestational Age	The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated from the onset of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization. It is also estimated to begin from fertilization, estrus, coitus, or artificial insemination.	Embryologic Age,Fetal Maturity, Chronologic,Chronologic Fetal Maturity,Fetal Age,Maturity, Chronologic Fetal,Age, Embryologic,Age, Fetal,Age, Gestational,Ages, Embryologic,Ages, Fetal,Ages, Gestational,Embryologic Ages,Fetal Ages,Gestational Ages
D000016	Abnormalities, Radiation-Induced	Congenital changes in the morphology of organs produced by exposure to ionizing or non-ionizing radiation.	Radiation-Induced Abnormalities,Abnormalities, Radiation Induced,Abnormality, Radiation-Induced,Radiation Induced Abnormalities,Radiation-Induced Abnormality
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia