[Morphological alterations of the skeletal muscles in mitochondrial myopathies in children and their mothers].

Skeletal muscle biopsies from 18 children and 8 from their mothers were studied in mitochondrial myopathies. It is shown that by means of electron microscopy, histochemistry, and morphometry the correct diagnosis of mitochondrial insufficiency is quite possible.

[Mitochondrial nature of cardiomyopathies in children (analysis of skeletal muscle biopsies)].

Morphological characteristics of the skeletal muscle biopsies from 10 children with idiopathic dilatational and hypertrophic cardiomyopathies are described. Methods of light and electron microscopy, histochemistry (mitochondrial enzymes, glycogen, lipids, calcium), morphometry and statistics were used. The presence of specific and nonspecific signs of systemic mitochondrial insufficiency, the character of histochemical distribution of the energetic substrates and the calcium suggest that this insufficiency is the basis of cardiomyopathies pathogenesis.

[Effect of hyperprolactinemia of varying origin on paracrine relationships in rat testes].

Light microscopy characteristics of mature rat testes were studied in control and hyperprolactinemia rats. The number of cells defined as granulocytes in interstitial regions adjacent to seminal ducts at stage VII and XII of spermatogenesis has been calculated. Normal deference difference between these parameters diminish in hyperprolactinemia.