Effects of melanocortin 1 receptor agonists in experimental nephropathies.
Nephrotic syndrome, characterized by massive proteinuria, is caused by a large group of diseases including membranous nephropathy (MN) and focal segmental glomerulosclerosis (FSGS). Although the underlying mechanisms are beginning to unravel, therapy is unspecific and far from efficient. It has been...
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2014
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oai:doaj.org-article:6ca5e8f53f5a4a4f990af4006af73e9c2021-11-18T08:34:44ZEffects of melanocortin 1 receptor agonists in experimental nephropathies.1932-620310.1371/journal.pone.0087816https://doaj.org/article/6ca5e8f53f5a4a4f990af4006af73e9c2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24498203/?tool=EBIhttps://doaj.org/toc/1932-6203Nephrotic syndrome, characterized by massive proteinuria, is caused by a large group of diseases including membranous nephropathy (MN) and focal segmental glomerulosclerosis (FSGS). Although the underlying mechanisms are beginning to unravel, therapy is unspecific and far from efficient. It has been suggested that adrenocorticotropic hormone (ACTH) has beneficial effects in patients with MN and possibly in other nephrotic diseases. We have previously reported that ACTH may act directly on podocytes through the melanocortin 1 receptor (MC1R). In the present study, we evaluate the effect of highly specific MC1R agonists in two different nephrotic disease models. Experimental MN: Passive Heymann nephritis (PHN) was induced in rats that were treated for four weeks with MS05, a selective MC1R agonist, or saline. The degree of albuminuria was significantly reduced over time and the effect was sustained one week after treatment withdrawal (p<0.05). Experimental FSGS: Based on a dose-response study, two doses of adriamycin were used for induction of nephropathy in Balb/c mice. Mice were treated with either a synthetic MC1R agonist (BMS-470539), with α-melanocyte stimulating hormone (α-MSH) or with saline. There was no beneficial effect of treatment. In summary, MC1R agonists reduce albuminuria and improve morphology in experimentally induced MN whereas they have no effect in experimental FSGS. The results illustrate the differences in these podocytopathies in terms of signaling mechanisms underlying proteinuria, and progression of disease.Annika Lindskog JonssonAnna GranqvistJohannes ElvinMartin E JohanssonBörje HaraldssonJenny NyströmPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 1, p e87816 (2014) |
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Medicine R Science Q Annika Lindskog Jonsson Anna Granqvist Johannes Elvin Martin E Johansson Börje Haraldsson Jenny Nyström Effects of melanocortin 1 receptor agonists in experimental nephropathies. |
description |
Nephrotic syndrome, characterized by massive proteinuria, is caused by a large group of diseases including membranous nephropathy (MN) and focal segmental glomerulosclerosis (FSGS). Although the underlying mechanisms are beginning to unravel, therapy is unspecific and far from efficient. It has been suggested that adrenocorticotropic hormone (ACTH) has beneficial effects in patients with MN and possibly in other nephrotic diseases. We have previously reported that ACTH may act directly on podocytes through the melanocortin 1 receptor (MC1R). In the present study, we evaluate the effect of highly specific MC1R agonists in two different nephrotic disease models. Experimental MN: Passive Heymann nephritis (PHN) was induced in rats that were treated for four weeks with MS05, a selective MC1R agonist, or saline. The degree of albuminuria was significantly reduced over time and the effect was sustained one week after treatment withdrawal (p<0.05). Experimental FSGS: Based on a dose-response study, two doses of adriamycin were used for induction of nephropathy in Balb/c mice. Mice were treated with either a synthetic MC1R agonist (BMS-470539), with α-melanocyte stimulating hormone (α-MSH) or with saline. There was no beneficial effect of treatment. In summary, MC1R agonists reduce albuminuria and improve morphology in experimentally induced MN whereas they have no effect in experimental FSGS. The results illustrate the differences in these podocytopathies in terms of signaling mechanisms underlying proteinuria, and progression of disease. |
format |
article |
author |
Annika Lindskog Jonsson Anna Granqvist Johannes Elvin Martin E Johansson Börje Haraldsson Jenny Nyström |
author_facet |
Annika Lindskog Jonsson Anna Granqvist Johannes Elvin Martin E Johansson Börje Haraldsson Jenny Nyström |
author_sort |
Annika Lindskog Jonsson |
title |
Effects of melanocortin 1 receptor agonists in experimental nephropathies. |
title_short |
Effects of melanocortin 1 receptor agonists in experimental nephropathies. |
title_full |
Effects of melanocortin 1 receptor agonists in experimental nephropathies. |
title_fullStr |
Effects of melanocortin 1 receptor agonists in experimental nephropathies. |
title_full_unstemmed |
Effects of melanocortin 1 receptor agonists in experimental nephropathies. |
title_sort |
effects of melanocortin 1 receptor agonists in experimental nephropathies. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2014 |
url |
https://doaj.org/article/6ca5e8f53f5a4a4f990af4006af73e9c |
work_keys_str_mv |
AT annikalindskogjonsson effectsofmelanocortin1receptoragonistsinexperimentalnephropathies AT annagranqvist effectsofmelanocortin1receptoragonistsinexperimentalnephropathies AT johanneselvin effectsofmelanocortin1receptoragonistsinexperimentalnephropathies AT martinejohansson effectsofmelanocortin1receptoragonistsinexperimentalnephropathies AT borjeharaldsson effectsofmelanocortin1receptoragonistsinexperimentalnephropathies AT jennynystrom effectsofmelanocortin1receptoragonistsinexperimentalnephropathies |
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