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Biomedical subjects

V S Darinskaia

Publications and source records attributed to V S Darinskaia.

8 recordsLinked to original sources
PubMed1978

[Localization of cholinesterases in structures of the alveolar portion of the mammary gland].

Cholinesterase (ChE) localization in the alveolar compartment of the mammary gland has been studied by light microscopy and ultrahistochemical methods. The product of reaction to ChE is associated with micropinocytotic vesicles of the capillar endothelium and myoepithelial cells, separate nerve terminals in interalveolar connective tissue and perivascular nerve terminals. In secretory cells, the ChE activity is revealed in the sites of fat droplet and on the membranes of endoplasmatic reticulum.

Animals↗
PubMed1977

[Properties of mechanoreceptor units of mammary gland parenchyma].

Two types of mechanosensitive units were found in the parenchyma of the rat mammary gland (SA and RA). Most of SA units had a spontaneous activity 1-3/sec. and responded to an abrupt displacement with a decline in the activity for 5-10 sec. RA had no such a response. The relation between average firing rate and displacement velocity at a constant displacement amplitude was linear for both SA and RA. RA however had the velocity threshold higher than SA. The number and frequency of SA afferent impulses decreased at a repeated stimulation. Electron microscopy revealed that free nerve endings correspond to SA and RA.

Action Potentials↗
PubMed1976

[Changes in the dimensions of motor neurons and their components with different forms of nerve center activation].

Experiments in frogs have shown that a prolonged orthodromic rhythmical activation of motoneurons induce changes in their size and staining. Under these conditions the size of all components of motoneurons (cytoplasm, nucleus, nucleolus) is changed. The cytoplasm size changes are more pronounced than those of the nucleus. Under prolongation of the low frequency stimulation (1 per sec.) of the dorsal roots the changes are of phasic character: an initial enlargement (10 minute-long stimulation) and a subsequent decrease of all the above spinal cord motoneuron components (25 minute stimulation). After the 10 minute high frequency stimulation (50 impulses per second) of nerve centers there occur a sharp decrease of the size of the cytoplasm and the nucleus.

Animals↗