دورية أكاديمية
Frontiers in Physiology / The Peritoneal Surface Proteome in a Model of Chronic Peritoneal Dialysis Reveals Mechanisms of Membrane Damage and Preservation
| العنوان: | Frontiers in Physiology / The Peritoneal Surface Proteome in a Model of Chronic Peritoneal Dialysis Reveals Mechanisms of Membrane Damage and Preservation |
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| المؤلفون: | Kratochwill, Klaus, Boehm, Michael, Herzog, Rebecca, Klinglmüller, Florian, Lichtenauer, Anton M., Wagner, Anja, Unterwurzacher, Markus, Beelen, Robert H. J., Alper, Seth L., Aufricht, Christoph |
| بيانات النشر: | Frontiers Media S.A. |
| سنة النشر: | 2019 |
| المجموعة: | MedUni Vienna ePub (Medzinische Universität Wien) |
| مصطلحات موضوعية: | N(2)-alanyl-L-glutamine, cytoprotective additive, in vivo proteomics, mesothelial cells, peritoneal immune response, PD rat model, animal model |
| جغرافية الموضوع: | UMW:14533, UMW:14638 |
| الوصف: | Peritoneal dialysis (PD) fluids are cytotoxic to the peritoneum. Recent studies have shown that alanyl-glutamine (AlaGln) modulates the cellular stress response, improves mesothelial cell survival, reduces submesothelial thickening in experimental models of PD, and in clinical studies improves PD effluent cell stress and immune responses. However, the mechanisms of AlaGln-mediated membrane protection are not yet fully understood. Here, we explore those mechanisms through application of a novel proteomics approach in a clinically relevant in vivo model in rats. Experimental PD was performed for 5 weeks using conventional single-chamber bag (SCB) or neutral dual-chamber bag (DCB), PD fluid (PDF), with or without AlaGln supplementation, via a surgically implanted catheter. Rats subjected to a single dwell without catheter implantation served as controls. The peritoneal surface proteome was directly harvested by detergent extraction and subjected to proteomic analysis by two-dimensional difference gel electrophoresis (2D-DiGE) with protein identification by mass spectrometry. An integrated bioinformatic approach was applied to identify proteins significantly affected by the treatments despite biological variation and interfering high abundance proteins. From 505 of 744 common spots on 59 gels, 222 unique proteins were identified. Using UniProt database information, proteins were assigned either as high abundance plasma proteins, or as cellular proteins. Statistical analysis employed an adapted workflow from RNA-sequencing, the trimmed mean of M-values (TMM) for normalization, and a mixed model for computational identification of significantly differentially abundant proteins. The most prominently enriched pathways after 5 weeks chronic treatment with SCB or DCB, PDFs belonged to clusters reflecting tissue damage and cell differentiation by cytoskeletal reorganization, immune responses, altered metabolism, and oxidative stress and redox homeostasis. Although the AlaGln effect was not as prominent, associated enriched ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text/html |
| اللغة: | English |
| تدمد: | 1664-042X |
| العلاقة: | vignette : https://repositorium.meduniwien.ac.at/titlepage/urn/urn:nbn:at:at-ubmuw:3-19384/128Test; urn:nbn:at:at-ubmuw:3-19384; https://resolver.obvsg.at/urn:nbn:at:at-ubmuw:3-19384Test; local:99145393370203331; system:AC15635591 |
| DOI: | 10.3389/fphys.2019.00472 |
| الإتاحة: | https://doi.org/10.3389/fphys.2019.00472Test https://resolver.obvsg.at/urn:nbn:at:at-ubmuw:3-19384Test |
| حقوق: | cc-by_4 |
| رقم الانضمام: | edsbas.C8DC4BED |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 1664042X |
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| DOI: | 10.3389/fphys.2019.00472 |