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  • Title: [Relative hypertrophy of the right ventricle in silver foxes selected for domestication behavior].
    Author: Eriskovskaia NK, Leont'eva TA, Tsellarius IuG, Trut LN, Beliaev DK.
    Journal: Biull Eksp Biol Med; 1985 Jul; 100(7):120-4. PubMed ID: 3160408.
    Abstract:
    Silver foxes selected for domestication behavior were found to have relative hypertrophy of the right heart ventricle, which was 21% as enlarged in males and 18% as enlarged in females as compared with non-domesticated animals. It was established by stereological methods that hypertrophy occurs mainly at the expense of an increase in the absolute and relative content of myofibrils in cardiomyocytes, with the absolute total volume of the mitochondria being equal both in domesticated and non-domesticated animals. It was shown by means of dissociated cell counts that in both animal groups, the absolute number of cardiomyocytes and their nuclei in the right ventricles is approximately similar. It is suggested that there is a relationship between right heart ventricle hypertrophy in domesticated foxes and variation in the balance of sympathetic and parasympathetic effects.
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