Reversibility of Malignant Thyroid Tumors in Mice
Author Information
Author(s): G.A. Thomas, D. Williams, E.D. Williams
Primary Institution: University of Wales College of Medicine
Hypothesis
Can monoclonal thyroid lesions regress after withdrawal of goitrogen treatment?
Conclusion
Monoclonal thyroid lesions induced by a mutagen and prolonged goitrogen treatment regress when the goitrogen is withdrawn.
Supporting Evidence
- Withdrawal of goitrogen led to a significant decrease in the number of carcinomas.
- All observed lesions were classified as either adenomas or carcinomas.
- Monoclonal origin of tumors was confirmed through G6PD histochemistry.
Takeaway
The study found that thyroid tumors in mice can shrink back when the substance that makes them grow is taken away.
Methodology
Mice were treated with radiation and goitrogen, then assessed for tumor development and regression after goitrogen withdrawal.
Limitations
The study did not investigate the reappearance of malignant phenotype after reintroducing goitrogen.
Participant Demographics
Female mice, including homozygous and heterozygous for G6PD deficiency.
Statistical Information
P-Value
<0.01
Statistical Significance
p<0.01
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