title: [Ultrastructural estimation facilities of atrial cardiomyocyte secretory activity].
abstract: The wide experience in the ultrastructural study of myoendocrine cells of different animal species in normal and experimental conditions allows us to choose the optimal methodology that gives the most complete information about the state of intracellular secretory apparatus. It is revealed that the combined set of atrial myoendocrine cell qualitative and quantitative parameters allows defining the natriuretic regulatory system status, as well as it's acute and chronic responses to hemodynamic changes. The information value of such approach is illustrated by examples of the ontogenetic investigation in two rat lines: with normal arterial blood pressure and with inherited stress-induced arterial hypertension. The proposed methodology is quite sensitive and descriptive; so it is of high importance due to insufficiency of other universal, specific, and accurate methods for cardiac natriuretic peptides investigation.
authors.forename: I M
authors.initials: IM
authors.lastname: Korostyshevskaia
authors.forename: V F
authors.initials: VF
authors.lastname: Maksimov
authors.forename: S A
authors.initials: SA
authors.lastname: Kurganov
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D009320:Atrial Natriuretic Factor / Q000378:metabolism*; D001794:Blood Pressure; D048429:Cell Size; D004622:Embryo, Mammalian; D005260:Female; D006325:Heart Atria / Q000254:growth & development / Q000378:metabolism / Q000648:ultrastructure*; D006439:Hemodynamics; D006973:Hypertension / Q000378:metabolism / Q000473:pathology; D008297:Male; D008854:Microscopy, Electron; D032383:Myocytes, Cardiac / Q000378:metabolism / Q000648:ultrastructure*; D053141:Organelle Size; D051381:Rats; D011919:Rats, Inbred Strains; D022142:Secretory Vesicles / Q000378:metabolism / Q000648:ultrastructure*
chemical_list: D009320:Atrial Natriuretic Factor