[Ultrastructural manifestations of the functional plasticity of the renal glomerular endothelium in vertebrates].
Studied has been the fine structure of the kidney's glomerulus endotheliocyte of man (age 2-6 years) and fish (year-old Atlantic salmon Salmo salar L.), as organisms occupying extreme place in development of kidney in phylogenetic line of the vertebrates. Revealed has been the uniformity of geometric reconstruction of vascular endothelium of kidney's glomerulus of investigated objects under heterogeneous factors' influence (compensatory hyperfunction of man and environment influence of fish). Formation of star-shaped structures with large open fenestrae in its central part (diameter 100-150 nm) both in the local parts of endothelium and in space between them (diameter 250-350 nm) has been observed. Such construction peculiarity sharply increases permeability of capillaries of kidney's glomerulus and thus appears as a characteristic sign of strenuous functional activity of the filtration apparatus of metanephros of man and mesonephros of fish. Revealed reaction of endothelium is considered as universal and nonspecific.
Zaĭtsev
V B
VB
Raĭkhlin
N T
NT
Sokolova
I N
IN
D000818:Animals; D002648:Child; D002675:Child, Preschool; D004727:Endothelium / Q000648:ultrastructure; D006801:Humans; D007678:Kidney Glomerulus / Q000648:ultrastructure*; D007680:Kidney Neoplasms / Q000648:ultrastructure; D008650:Mesonephros / Q000648:ultrastructure; D008854:Microscopy, Electron; D012474:Salmon; D014714:Vertebrates / Q000033:anatomy & histology*; D009396:Wilms Tumor / Q000648:ultrastructure
Ul'trastrukturnye proiavleniia funktsional'noĭ plastichnosti éndoteliia pochechnykh glomerul u pozvonochnykh.