Specific factors for prenatal lead exposure in the border area of China.
The objectives of this study are to examine the prevalence of increased blood lead concentrations in mothers and their umbilical cords, and to identify risk factors for prenatal lead exposure in Kunming city, Yunnan province, China. The study was conducted at two obstetrics departments, and 100 peripartum women were enrolled. The mean blood lead concentrations of the mothers and the umbilical cords were 67.3microg/l and 53.1microg/l, respectively. In multiple linear regression analysis, maternal occupational exposure, maternal consumption of homemade dehydrated vegetables and maternal habitation period in Kunming city were significantly associated with an increase of umbilical cord blood lead concentration. In addition, logistic regression analysis was used to assess the association of umbilical cord blood lead concentrations that possibly have adverse effects on brain development of newborns with each potential risk factor. Maternal frequent use of tableware with color patterns inside was significantly associated with higher cord blood lead concentration in addition to the three items in the multiple linear regression analysis. These points should be considered as specific recommendations for maternal and fetal lead exposure in this city.
Kawata
Kimiko
K
Department of Developmental Medical Sciences, School of International Health, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 1130033, Japan.
Li
Yan
Y
Liu
Hao
H
Zhang
Xiao Qin
XQ
Ushijima
Hiroshi
H
D000328:Adult; D002516:Ceramics; D002681:China; D002947:Cities; D004784:Environmental Monitoring; D004787:Environmental Pollution; D005260:Female; D005312:Fetal Blood / Q000737:chemistry*; D005506:Food Contamination; D006801:Humans; D007854:Lead / Q000097:blood*; D016014:Linear Models; D016015:Logistic Models; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D012307:Risk Factors; D014675:Vegetables
D007854:Lead