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Related Experiment Videos

Thyroid hormone levels in the developing obese-hyperglycemic syndrome.

P W Mobley, P U Dubuc

    Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Metabolisme
    |January 1, 1979
    PubMed
    Summary

    Obese mice show lower thyroid hormone levels during early development, potentially causing hypometabolism. However, other factors likely explain these issues in adult obese mice.

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    Area of Science:

    • Endocrinology
    • Metabolic Research
    • Animal Models

    Background:

    • Obesity in C57BL/6J ob/ob mice is associated with metabolic dysfunction.
    • Thyroid hormones play a crucial role in regulating metabolism and thermal regulation.

    Purpose of the Study:

    • To investigate thyroid hormone level changes in obese (ob/ob) versus lean mice.
    • To correlate thyroid hormone levels with metabolic and thermal regulation abnormalities.

    Main Methods:

    • Longitudinal examination of thyroid hormone levels.
    • Comparison between C57BL/6J ob/ob mice and their lean littermates.
    • Age range: 6 days to 22 weeks.

    Main Results:

    • Obese mice exhibited significantly reduced thyroid hormone concentrations from 10 to 21 days of age.
    • After 21 days, thyroid hormone levels in obese mice were equal to or higher than lean littermates.
    • Hypometabolism and abnormal thermal regulation were observed in weanling obese mice.

    Conclusions:

    • Diminished thyroid hormone levels in early life may contribute to hypometabolism in weanling obese mice.
    • Other mechanisms are responsible for the persistent metabolic and thermal regulation abnormalities in adult obese mice.

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