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Related Experiment Videos

Abnormal dentition and decrease in body weight in the genetically obese mouse (genotype, ob/ob)

R A Batt

    International Journal of Obesity
    |January 1, 1978
    PubMed
    Summary

    Obese mice (ob/ob) experienced sudden weight loss and cannibalism due to abnormal incisor teeth. Grinding food prevented weight loss, suggesting a link between dental issues and metabolic health in these mice.

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    Area of Science:

    • Obesity research
    • Animal models
    • Genetics

    Background:

    • Obesity (ob/ob) mice are a well-established model for studying metabolic dysfunction.
    • Incisor abnormalities can impact feeding behavior and nutritional intake in rodents.

    Purpose of the Study:

    • To investigate the sudden onset of weight loss and cannibalism in obese mice.
    • To identify potential causes for accompanying incisor abnormalities in these animals.

    Main Methods:

    • Observation of obese mice (ob/ob) at seven months of age.
    • Assessment of body weight changes and feeding behavior.
    • Examination of incisor teeth morphology.
    • Intervention by altering food consistency (pelleted vs. powdered).

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    Main Results:

    • Obese mice exhibited sudden body weight loss and cannibalism.
    • Abnormalities in incisor teeth, including lack of eruption and ridged thickening, were observed.
    • Preventing weight loss was achieved by providing powdered food, bypassing the need for normal incisor function.

    Conclusions:

    • Incisor abnormalities in obese mice can lead to significant health complications, including weight loss and cannibalism.
    • Altering food texture can mitigate the effects of dental problems on body weight in susceptible mouse models.
    • Further research is warranted to elucidate the underlying mechanisms connecting obesity, incisor development, and feeding behavior.