Transport of Inorganic Ions by Renal Tubules

Dantzler, William H.

doi:10.1007/978-1-4939-3734-9_4

Cited by 5 publications

(2 citation statements)

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“…It should be noted that the ultrastructure of the neck segment is similar to the structure of this part of the nephron in fish in the mesonephric kidneys of tailless and caudate amphibians ( Rana temporaria L. , Ambystoma maculatum ), leading a conditionally terrestrial lifestyle [ 26 , 27 ]. In the metanephros of mammals, this segment is strongly reduced or absent [ 10 , 14 , 28 , 29 ]. The ciliated epithelium of the neck segment of the anamnium is involved in the active movement of the filtrate inside the tubule under conditions of low transmembrane current during filtration in the glomerulus [ 30 ].…”

Section: Discussionmentioning

confidence: 99%

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New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (Polypterus senegalus)

Флерова

Evdokimov

2022

Biology

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This study presents new data on the microanatomy and ultrastructure of Polypterus senegalus nephrons. It was shown that the diameter and ultrastructure of renal corpuscles, a well-developed neck segment, and ultrastructure of two types of epithelial cells of the proximal tubule are ancestral signs of the modern population of P. senegalus associated with habitat conditions in the aquatic environment. The outer diameter of the tubules, the height of the epitheliocytes, the presence of two types of epithelial cells of the intermediate and distal tubules of the corresponding ultrastructure, and a large area of nephrogenic tissue are progressive features of the modern population of P. senegalus, associated with adaptation to air respiration and periodic terrestrial migrations, which were formed at the early stages of evolution of P. senegalus convergently with lungfish and amphibians.

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Section: Discussionmentioning

confidence: 99%

“…Living in the ground-air environment became one of the turning points in the evolution of vertebrates, which affected all body systems, including the excretion system [ 10 ]. It can be assumed that the nephron of bichirs acquired unique features characteristic of amphibians in the course of evolution.…”

Section: Introductionmentioning

confidence: 99%