Whole blood, serum, and saliva lead concentrations in 6- to 8-year-old children

Lead concentrations in whole blood, serum, saliva and house dust in samples collected at two time points (12 months apart) in Santo Amaro, BA, Brazil

“…Although the median BLL of 3.4 μg/dL in 2010 may be considered higher than reference values produced in a cohort of sixto eight-year-old children from Ribeirao Preto, SP (median: 2.2 mg/ dL, n ¼444), a city with no known source of undue exposure to lead (Costa de Almeida et al, 2010), the median BLL of 1.72 mg/dL (or the mean of 2.0 mg/dL) verified in Santo Amaro in 2011 raises little epidemiological concern regarding current general population environmental exposure to lead. The difference between median and mean clearly indicates that a subgroup of children has undergone higher exposure, which actually is reason for concern from the municipality, health authorities, and the community.…”

Lead Deposition in Bovine Enamel during a pH-Cycling Regimen Simulating the Caries Process

“…For unexposed populations, plasma and serum Pb levels are described to range from 0.14 to 0.38 g/l [Bergdahl et al, 1999] and from ! 0.03 g/l (detection limit) to 2.6 g/l [Costa de Almeida et al, 2010], respectively. For exposed populations, plasma Pb levels are described to be 0.02-2.50 g/l for men and 0.03-1.60 g/l for women [Barbosa et al, 2006].…”

Salivary, blood and plasma nitrite concentrations in periodontal patients and healthy individuals before and after periodontal treatment

“…Saliva from the parotid gland was then collected using a modified Carlson-Crittenden collector as described in detail before [22]. All saliva samples were centrifuged at 700 g for 15 min, at 4°C, to pellet the cells without lysis.…”