Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea
The mammalian kidney responds to partial nephrectomy with glomerular and tubular hypertrophy, but without renal regeneration. In contrast, renal regeneration in lower vertebrates is known to occur. Understanding the underlying mechanisms of renal regeneration is highly important; however, a servicea...
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ftmdcberlin:oai:edoc.mdc-berlin.de:6659 2023-05-15T18:51:08+02:00 Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea Elger, M. Hentschel, H. Litteral, J. Wellner, M. Kirsch, T. Luft, F.C. Haller, H. 2003-06 http://edoc.mdc-berlin.de/6659/ https://edoc.mdc-berlin.de/6659/ http://jasn.asnjournals.org/cgi/content/abstract/14/6/1506 unknown American Society of Nephrology Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea. Elger, M. and Hentschel, H. and Litteral, J. and Wellner, M. and Kirsch, T. and Luft, F.C. and Haller, H. Journal of the American Society of Nephrology 14 (6): 1506-1518. June 2003 Cardiovascular and Metabolic Diseases Article PeerReviewed 2003 ftmdcberlin 2022-01-01T19:07:27Z The mammalian kidney responds to partial nephrectomy with glomerular and tubular hypertrophy, but without renal regeneration. In contrast, renal regeneration in lower vertebrates is known to occur. Understanding the underlying mechanisms of renal regeneration is highly important; however, a serviceable animal model has not been developed. A neonephrogenic zone has been identified in the European lesser spotted dogfish, Scyliorhinus caniculus (Hentschel H. Am J Anat 190: 309-333, 1991), as well as in the spiny dogfish Squalus acanthias and the little skate, Leucoraja erinacea. The zone features the production of new nephrons complete with a countercurrent system. To analyze this nephrogenic region of elasmobranch fish further, a renal reduction model was established. The neonephrogenic zone in the adult kidney of the little skate resembles the embryonic metanephric kidney and contains stem cell-like mesenchymal cells, tips of the branching collecting duct system, and outgrowth of the arterial system. Four stages of nephron development were analyzed by serial sections and defined: stage I, aggregated mesenchymal cells; stage II, S-shaped body-like structure with high-prismatic epithelial cells; stage III, segmental nephron segregation; stage IV, functioning nephron. The stages were analyzed after partial nephrectomy. In addition, cell proliferation was assessed by incorporation of bromo-deoxyuridine (BrdU). New nephrons developed in animals undergoing partial nephrectomy. Growth was greatly stimulated in the nephrogenic zone, both in the remnant tissue and in the contralateral kidney within 10 wk. Mesenchymal cell aggregates increased significantly per renal cross-section compared with controls (stage I, 0.64 +/- 0.28 versus 0.27 +/- 0.25; P < 0.005; n = 10 animals per group). The same was the case for S-shaped body-like cysts (stage II, 0.24 +/- 0.19 versus 0.08 +/- 0.09; P < 0.02). Cellular proliferation in the neonephrogenic zone of the contralateral kidney was also greatly enhanced (14.42 +/- 3.26 versus 2.64 +/- 1.08 BrdU-positive cells per cross-section, P < 0.001). It is concluded that the skate possesses a nephrogenic zone containing stem cell-like mesenchymal cells during its entire life. Partial nephrectomy induces renal growth by accelerating nephrogenesis. This unique model may facilitate understanding renal regeneration. Article in Journal/Newspaper spiny dogfish Squalus acanthias Max-Delbrueck-Center for Molecular Medicine, Berlin: MDC Repository |
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Open Polar |
collection |
Max-Delbrueck-Center for Molecular Medicine, Berlin: MDC Repository |
op_collection_id |
ftmdcberlin |
language |
unknown |
topic |
Cardiovascular and Metabolic Diseases |
spellingShingle |
Cardiovascular and Metabolic Diseases Elger, M. Hentschel, H. Litteral, J. Wellner, M. Kirsch, T. Luft, F.C. Haller, H. Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea |
topic_facet |
Cardiovascular and Metabolic Diseases |
description |
The mammalian kidney responds to partial nephrectomy with glomerular and tubular hypertrophy, but without renal regeneration. In contrast, renal regeneration in lower vertebrates is known to occur. Understanding the underlying mechanisms of renal regeneration is highly important; however, a serviceable animal model has not been developed. A neonephrogenic zone has been identified in the European lesser spotted dogfish, Scyliorhinus caniculus (Hentschel H. Am J Anat 190: 309-333, 1991), as well as in the spiny dogfish Squalus acanthias and the little skate, Leucoraja erinacea. The zone features the production of new nephrons complete with a countercurrent system. To analyze this nephrogenic region of elasmobranch fish further, a renal reduction model was established. The neonephrogenic zone in the adult kidney of the little skate resembles the embryonic metanephric kidney and contains stem cell-like mesenchymal cells, tips of the branching collecting duct system, and outgrowth of the arterial system. Four stages of nephron development were analyzed by serial sections and defined: stage I, aggregated mesenchymal cells; stage II, S-shaped body-like structure with high-prismatic epithelial cells; stage III, segmental nephron segregation; stage IV, functioning nephron. The stages were analyzed after partial nephrectomy. In addition, cell proliferation was assessed by incorporation of bromo-deoxyuridine (BrdU). New nephrons developed in animals undergoing partial nephrectomy. Growth was greatly stimulated in the nephrogenic zone, both in the remnant tissue and in the contralateral kidney within 10 wk. Mesenchymal cell aggregates increased significantly per renal cross-section compared with controls (stage I, 0.64 +/- 0.28 versus 0.27 +/- 0.25; P < 0.005; n = 10 animals per group). The same was the case for S-shaped body-like cysts (stage II, 0.24 +/- 0.19 versus 0.08 +/- 0.09; P < 0.02). Cellular proliferation in the neonephrogenic zone of the contralateral kidney was also greatly enhanced (14.42 +/- 3.26 versus 2.64 +/- 1.08 BrdU-positive cells per cross-section, P < 0.001). It is concluded that the skate possesses a nephrogenic zone containing stem cell-like mesenchymal cells during its entire life. Partial nephrectomy induces renal growth by accelerating nephrogenesis. This unique model may facilitate understanding renal regeneration. |
format |
Article in Journal/Newspaper |
author |
Elger, M. Hentschel, H. Litteral, J. Wellner, M. Kirsch, T. Luft, F.C. Haller, H. |
author_facet |
Elger, M. Hentschel, H. Litteral, J. Wellner, M. Kirsch, T. Luft, F.C. Haller, H. |
author_sort |
Elger, M. |
title |
Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea |
title_short |
Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea |
title_full |
Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea |
title_fullStr |
Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea |
title_full_unstemmed |
Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea |
title_sort |
nephrogenesis is induced by partial nephrectomy in the elasmobranch leucoraja erinacea |
publisher |
American Society of Nephrology |
publishDate |
2003 |
url |
http://edoc.mdc-berlin.de/6659/ https://edoc.mdc-berlin.de/6659/ http://jasn.asnjournals.org/cgi/content/abstract/14/6/1506 |
genre |
spiny dogfish Squalus acanthias |
genre_facet |
spiny dogfish Squalus acanthias |
op_relation |
Nephrogenesis is induced by partial nephrectomy in the elasmobranch Leucoraja erinacea. Elger, M. and Hentschel, H. and Litteral, J. and Wellner, M. and Kirsch, T. and Luft, F.C. and Haller, H. Journal of the American Society of Nephrology 14 (6): 1506-1518. June 2003 |
_version_ |
1766244929848213504 |