Mercury concentration in organs of contemporary Japanese.
Concentrations of inorganic mercury (IHg), methylmercury (MeHg), and total mercury (THg) were determined for autopsy samples from 46 Japanese subjects. Two laboratories (Labs A and B) participated in Hg analyses: Lab A for THg and IHg and Lab B for THg and MeHg. Total mercury concentration values were in good agreement between the two laboratories: the averages were several hundreds of ng/g in kidney cortex, kidney medulla, and liver, and were several tens of ng/g in cerebrum, cerebellum, heart, and spleen. Inorganic mercury accumulated more in kidney and liver: its percentage THg was 81-84% in the kidney, 67% in the liver, 25% in the heart, 22% in the spleen, 20% in the cerebrum, and 14% in the cerebellum. Methylmercury levels in tissues were uniform through all organs except the liver. Approximately 80% was in the form of MeHg in the cerebrum, cerebellum, heart, and spleen, whereas the values were 33%, 15%, and 11% in the liver, kidney medulla, and kidney cortex, respectively. Age was a significant factor in increased IHg concentrations in the cerebrum and heart, decreased values of %MeHg in the cerebrum, cerebellum, and heart, and increased values of %IHg in the cerebrum and heart.
Matsuo
N
N
Department of Human Ecology, School of Health Sciences, Faculty of Medicine, University of Tokyo, Japan.
Suzuki
T
T
Akagi
H
H
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001344:Autopsy; D002648:Child; D002675:Child, Preschool; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D007223:Infant; D007564:Japan; D008297:Male; D008628:Mercury / Q000032:analysis*; D008767:Methylmercury Compounds / Q000032:analysis; D008875:Middle Aged; D013054:Spectrophotometry, Atomic; D014018:Tissue Distribution
D008767:Methylmercury Compounds; D008628:Mercury