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Decreased serum bilirubin levels in children with lead poisoning
Mengsi Ye1, Tingting Zhang2, Zhibo Chen3
1Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China.
Insights
Lead poisoning in children significantly alters non-enzymatic antioxidants. Blood tests reveal lower albumin, bilirubin, urea, and creatinine levels, indicating oxidative stress in affected children.
Area of Science:
- Environmental Health
- Pediatric Toxicology
- Biochemistry
Background:
- Lead is a toxic heavy metal causing irreversible damage in children.
- Oxidative stress is a key mechanism in lead toxicity.
- Monitoring in vivo oxidative stress in lead-poisoned children is crucial.
Purpose of the Study:
- To investigate blood serum levels of non-enzymatic antioxidants in children with lead poisoning.
- To assess biochemical parameters including albumin, bilirubin, creatinine, and uric acid.
Main Methods:
- A case-control study involving 355 children with lead poisoning and 355 matched controls.
- Analysis of clinical characteristics and measurement of serum levels of total protein, globulin, albumin, bilirubin, aspartate aminotransferase (AST), urea, and creatinine.
Main Results:
- Children with lead poisoning showed significantly lower levels of albumin, bilirubin, urea, and creatinine compared to controls.
- Elevated levels of AST, total protein, and globulin were observed in lead-poisoned children.
- Direct bilirubin, albumin, total protein, urea, creatinine, and AST levels were associated with lead poisoning, with bilirubin, albumin, and urea identified as independent indicators.
Conclusions:
- Lead exposure interferes with the non-enzymatic antioxidant system in children.
- Lead poisoning leads to a significant decrease in serum bilirubin levels.
Objective:
Lead is a toxic heavy metal, which causes irreversible damage in children. Oxidative stress is the underlying mechanism of lead toxicity, and monitoring oxidative stress of lead poisoning children in vivo is important. Our study aimed to investigate blood serum levels of biochemical parameters, including albumin, bilirubin, creatinine, and uric acid, which are regarded as non-enzymatic antioxidants, in children with lead poisoning.
Methods:
We studied 355 children with lead poisoning and 355 age- and sex-matched controls. We analyzed clinical characteristics and measured serum levels of total protein, globulin, albumin, bilirubin, aspartate aminotransferase (AST), alanine aminotransferase, urea, and creatinine.
Results:
We found that albumin, bilirubin, urea, and creatinine levels were significantly lower and AST, total protein, and globulin levels were higher in children with lead poisoning than in controls. Direct bilirubin, albumin, total protein, urea, creatinine, and AST levels were associated with lead poisoning after adjustment for other covariates. Spearman analysis showed that direct bilirubin, albumin, and urea levels were independent indicators (i.e., not related to hemoglobin or weight), while creatinine levels showed a moderate correlation with weight.
Conclusion:
Lead interferes with the non-enzymatic antioxidant system in children, and lead poisoning results in a decrease in serum bilirubin levels.
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