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M E Kriukova

Publications and source records attributed to M E Kriukova.

12 recordsLinked to original sources
PubMed1987

[Structure of the inguinal gland in the mountain hare in various states of reproductive activity. I. The sebaceous glands].

Histology and ultrastructure of sebaceous glands of the integumental inguinal gland of the hare were studied during the periods of low and high reproductive activity (in winter and in spring breeding season). It was established that the glands were functioning continually (cells in acini of all the animals used contained numerous secretory granules). The expansion of agranular endoplasmic reticulum and Golgi complex in secretory cells of sexually active animals, especially of males, shows an increased intensity of gland secretory process during the breeding season.

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PubMedDate not supplied

[A muscle mutant of Drosophila melanogaster: the electron microscopic study of the indirect flight musculature].

Dominant autosomal mutation l(2)M66 DCS induced in Drosophila melanogaster by ethyl-methane-sulfonate was studied. Electron-microscopic studies of asynchronous (fibrillar) and synchronous (tubular) muscles in 24-hour old mutants showed pathological changes in their fine structure. All systems were affected: the fragmentation of the Z-lines, disappearance of protofibrils, degenerative changes of mitochondria, sarcoplasmic reticulum, and the T-system, the appearance of membrane aggregates and lysosomes, the presence of a large amount of glycogen were detected. These changes in the ultrastructure of the flight muscles in mutants are similar to those observed in the process of physiological degeneration of insect muscles.

Animals↗
PubMedDate not supplied

[An electron microscopic study of the structure of the indirect flight musculature at the pupal stage in the muscle mutant of Drosophila melanogaster].

Ultrastructure of indirect flight muscles was analyzed in Drosophila pupae heterozygous for the mutation l(2)MhcM66, which is an allele of the locus Mhc (Myosin heavy chain). It is demonstrated that the initial stages of muscle fiber differentiation in mutants proceed normally. First visible changes (elimination of individual thick protofibrils) are observed when myofibrils attain a certain size. Disintegration of the contractile apparatus progresses with growth of myofibrils. Mechanisms responsible for onset and development of these destructive processes during ontogeny are discussed.

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