Blood Metallothionein Transcript as a Biomarker for Metal Sensitivity
Author Information
Author(s): Liu Jie, Cheng Min-Liang, Yang Qin, Shan Ke-Ren, Shen Jun, Zhou Yushu, Zhang Xinjiang, Dill Anna L., Waalkes Michael P.
Primary Institution: National Institute of Environmental Health Sciences
Hypothesis
Individuals with a low ability for metallothionein expression may be susceptible to metal toxicity.
Conclusion
Blood metallothionein transcript appears to be a useful biomarker of tissue metallothionein levels, with arsenicosis patients showing significantly lower levels.
Supporting Evidence
- Blood metallothionein levels were significantly lower in arsenicosis patients compared to healthy subjects.
- A positive correlation was found between blood metallothionein transcripts and tissue levels in rodents.
- The study suggests that blood metallothionein transcripts can indicate tissue levels in humans.
Takeaway
This study found that people with arsenic poisoning have lower levels of a protein that helps protect against metal toxicity, which might make them more sensitive to arsenic.
Methodology
Rodents were treated with various inducers of metallothionein, and blood and buccal cell samples were collected from arsenicosis patients and healthy subjects for transcript analysis.
Potential Biases
Potential confounding factors such as exposure to other components of coal were not controlled.
Limitations
The study did not assess the effects of ethanol use and smoking in the participant population.
Participant Demographics
48 arsenicosis patients (26 males, 22 females) and 48 healthy subjects (23 males, 25 females) from Guizhou, China.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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