CIRCULARLY-POLARIZED 50-HZ MAGNETIC-FIELD EXPOSURE REDUCES PINEAL-GLAND AND BLOOD MELATONIN CONCENTRATIONS OF LONG-EVANS RATS

被引：70

作者：

KATO, M ^{[1
]}

HONMA, K ^{[1
]}

SHIGEMITSU, T ^{[1
]}

SHIGA, Y ^{[1
]}

机构：

[1] ELECT POWER IND,CENT RES INST,TOKYO,TOKYO,JAPAN

来源：

NEUROSCIENCE LETTERS | 1994年 / 166卷 / 01期

关键词：

MAGNETOSENSITIVITY; ROTATING MAGNETIC FIELD; PHOTOSENSITIVITY;

D O I：

10.1016/0304-3940(94)90840-0

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

In order to determine if pigmented rats also exhibit melatonin suppression like that described for albino rats exposed to circularly polarized, 50-Hz, 1-mu T magnetic fields for 6 weeks, two experiments were conducted with male Long-Evans rats. The field-exposed experimental group received circularly polarized, 50-Hz, 1-mu T magnetic fields for 6 weeks, the concurrent sham-exposed control group was exposed to the stray field of 0.02 mu T. In addition, prior to the exposure experiment, two cage-control groups were placed in the Facility for 6 weeks without activation of the 50-Hz magnetic field generation apparatus. Rats were sacrificed at 12.00 and at 24.00 h for collection of plasma and pineal gland: melatonin was determined by radioimmunoassay. Significant reductions of plasma and pineal gland melatonin contents were observed at 0.02 mu T as compared to the control values, and a further reduction was observed at 1 mu T. As do albino rats, pigmented rats also exhibit melatonin suppression when exposed to time-varying magnetic fields.

引用

页码：59 / 62

页数：4

共 14 条

[1]

BROWN GM, 1989, ADV PINEAL RES, V3, P87

[2] EFFECTS OF EXPOSURE TO A CIRCULARLY POLARIZED 50-HZ MAGNETIC-FIELD ON PLASMA AND PINEAL MELATONIN LEVELS IN RATS [J].