9 Blood lead determinants and prevalence of neuropsychiatric symptoms in firearm users
研究65名男性枪支使用者的血铅水平及神经精神症状，发现频繁射击和使用铅釉陶器是血铅升高的主要因素，且血铅虽低仍与症状相关。
<h3>Background</h3> Blood lead continues to be a health risk for Mexican workers. <h3>Objective</h3> To identify blood lead predictors and the prevalence of neuropsychiatric symptoms in firearm users. <h3>Material and Methods</h3> A cross-sectional study was performed on 65 males. We obtained socio-occupational and determined venous blood lead (BPb), as well as neuropsychiatric symptoms using the Q-16 questionnaire. <h3>Results</h3> The mean (SD) [min-max] age was 34.8 (6.9) [21–60] years; mean number of years working at the company was 14 (8.5) [1–48] years. Twenty percent (13) used leaded glazed clay pottery (PbGC) in the kitchen. During practice they fired a mean 72 shots (60) [20–250], and during their employed life 5483 (8322.5) [200 to 50 000]. Mean BPb was 6.4 (2.8) [2.7–14.4] mcg/dL. Two caretakers at the firing range had 29.6 and 51.7 mcg/dL BPb. Subjects who went to practice 12 or more times a year reported a greater percentage of miscarriages in their partners (24% <i>vs</i> 0%). Twelve percent (8) showed an increase ³5 in neuropsychiatric symptoms. The BPb multiple linear regression model explains <i>R</i><sup>2</sup> = 44.15%, as follows: those who had ≥ 12 practice sessions per year <i>β</i> = 0.5339 and use of PbGC <i>β</i> = 0.3651. <h3>Conclusions</h3> Using firearms and PbGC contribute to increasing BPb in the studied personnel. The BPb concentrations found, despite being low, are a health risk, as evidenced by the prevalence of neuropsychiatric symptoms. The caretakers at the shooting range are at a higher risk.