New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (<i>Polypterus senegalus</i>)

This study presents new data on the microanatomy and ultrastructure of <i>Polypterus senegalus</i> 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 ar...

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Main Authors: Ekaterina Aleksandrovna Flerova, Evgeniy Georgievich Evdokimov
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Biology
Subjects:
Online Access:https://www.mdpi.com/2079-7737/11/10/1374
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author Ekaterina Aleksandrovna Flerova
Evgeniy Georgievich Evdokimov
author_facet Ekaterina Aleksandrovna Flerova
Evgeniy Georgievich Evdokimov
author_sort Ekaterina Aleksandrovna Flerova
collection DOAJ
description This study presents new data on the microanatomy and ultrastructure of <i>Polypterus senegalus</i> 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 <i>P. senegalus</i> 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 <i>P. senegalus</i>, associated with adaptation to air respiration and periodic terrestrial migrations, which were formed at the early stages of evolution of <i>P. senegalus</i> convergently with lungfish and amphibians.
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spelling doaj.art-9cf102f8250d4f5c933c2427a2d4a01b2023-11-23T22:58:32ZengMDPI AGBiology2079-77372022-09-011110137410.3390/biology11101374New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (<i>Polypterus senegalus</i>)Ekaterina Aleksandrovna Flerova0Evgeniy Georgievich Evdokimov1Department of Human and Animal Physiology, P.G. Demidov Yaroslavl State University, 150003 Yaroslavl, RussiaDepartment of Human and Animal Physiology, P.G. Demidov Yaroslavl State University, 150003 Yaroslavl, RussiaThis study presents new data on the microanatomy and ultrastructure of <i>Polypterus senegalus</i> 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 <i>P. senegalus</i> 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 <i>P. senegalus</i>, associated with adaptation to air respiration and periodic terrestrial migrations, which were formed at the early stages of evolution of <i>P. senegalus</i> convergently with lungfish and amphibians.https://www.mdpi.com/2079-7737/11/10/1374fish<i>Polypterus senegalus</i>microanatomyultrastructurenephron
spellingShingle Ekaterina Aleksandrovna Flerova
Evgeniy Georgievich Evdokimov
New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (<i>Polypterus senegalus</i>)
Biology
fish
<i>Polypterus senegalus</i>
microanatomy
ultrastructure
nephron
title New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (<i>Polypterus senegalus</i>)
title_full New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (<i>Polypterus senegalus</i>)
title_fullStr New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (<i>Polypterus senegalus</i>)
title_full_unstemmed New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (<i>Polypterus senegalus</i>)
title_short New Data on Nephron Microanatomy and Ultrastructure of Senegal Bichir (<i>Polypterus senegalus</i>)
title_sort new data on nephron microanatomy and ultrastructure of senegal bichir i polypterus senegalus i
topic fish
<i>Polypterus senegalus</i>
microanatomy
ultrastructure
nephron
url https://www.mdpi.com/2079-7737/11/10/1374
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