title: [Glycosaminoglycan distribution in the internal zone of the kidney medulla in various rodent species].
abstract: Ultrastructure and distribution of glycosaminoglycanes (Hale's method) have been studied in the renal internal medullary substance zone in the white rat and in four species of wild rodents of various ecology: Arvicola terrestris, Microtus afganus, Spermophylosis leptodactylus, Rhombomus opimus. A tight contact of the structural components in the renal papilla, clearly manifested differences in the epitheliocyte structure of the nephron loop parts, thinning of the collecting tube epithelium and that of the interstitial layers in the more arid species are evidently connected with a high level of water reabsorbtion. Increasing area of the apical surface, development of the lysosomal apparatus, abundance of the apical vesicles when general contents of organells in the collecting tube cells is high (in terrestrial rats), is accompanied with hypertrophy of glycocalix and with presence of glycosaminoglycanes within the vesicles and phagosomes. All the species of rodents studied are characterized with the presence of the interstitial "gel filter", with a maximal contents of glycosaminoglycanes in the white rat renal papilla interstitium near the collecting tubes.
mesh_terms: D000818:Animals; D006025:Glycosaminoglycans / Q000378:metabolism*; D007671:Kidney Concentrating Ability; D007679:Kidney Medulla / Q000378:metabolism* / Q000648:ultrastructure; D008854:Microscopy, Electron; D012377:Rodentia / Q000378:metabolism*; D013045:Species Specificity
chemical_list: D006025:Glycosaminoglycans
vernacular_title: Raspredelenie glikozaminoglikanov vo vnutrenneĭ zone mozgovogo veshchestva pochki u nekotorykh vidov gryzunov.