title: [Peculiar remaining of some PCB congeners in the patients with Yusho for more than 30 years].
abstract: Concentrations of polychlorinated biphenyl (PCB) congeners, hexachlorobenzene (HCB) and dichloro dichlorophenyl ethylen (DDE) in the blood of Yusho patients (n = 28) were statistically compared with those in the blood of Fukuoka residents (n = 151). The PCB concentrations in the blood of Yusho patients were higher than those of Fukuoka controls and concentration ratios of Yusho/Control were various depending on PCB congeners, being 1.6 on 2,3',4,4',5-pentaCB (# 118), 17.5 on 2,3,3',4,4',5-hexaCB (# 156) and 5.4 on total PCBs. Correlation coefficients between age and concentrations of 7 PCB congeners, HCB and DDE in the blood of Fukuoka residents were significantly positive each other (p < 0.001), while in Yusho patients, the correlation coefficients were positive but various depending on the congeners. However, correlation coefficient between PCB # 118 and PCB # 156 in the Yusho patients was remarkably low, indicating their peculiar accumulative properties in Yusho patients. The concentration of PCB # 118 had been markedly decreased after the ingestion of PCBs and would be metabolized to hydroxylated PCB, which might cause estrogen disturbance in the Yusho patients.
authors.affiliation: Daiichi College of Pharmaceutical Sciences, 22-1, Tamagawa-cho, Minami-ku, Fukuoka 815-8511.
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Masuda
authors.forename: Koichi
authors.initials: K
authors.lastname: Haraguchi
authors.forename: Suminori
authors.initials: S
authors.lastname: Kono
mesh_terms: D000328:Adult; D003633:Dichlorodiphenyl Dichloroethylene / Q000097:blood*; D004350:Drug Residues / Q000032:analysis*; D005260:Female; D005506:Food Contamination; D006581:Hexachlorobenzene / Q000097:blood*; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D012275:Oryza / Q000506:poisoning*; D010938:Plant Oils / Q000506:poisoning*; D011078:Polychlorinated Biphenyls / Q000506:poisoning*; D013997:Time Factors
chemical_list: D010938:Plant Oils; D003633:Dichlorodiphenyl Dichloroethylene; D006581:Hexachlorobenzene; D011078:Polychlorinated Biphenyls