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Bohnert BN, Gonzalez-Menendez I, Dörffel T, Schneider JC, Xiao M, Janessa A, Kalo MZ, Fehrenbacher B, Schaller M, Casadei N, Amann K, Daniel C, Birkenfeld AL, Grahammer F, Izem L, Plow EF, Quintanilla-Martinez L, Artunc F. Essential role of DNA-PKcs and plasminogen for the development of doxorubicin-induced glomerular injury in mice. Dis Model Mech 2021; 14:271906. [PMID: 34423816 PMCID: PMC8461821 DOI: 10.1242/dmm.049038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 08/02/2021] [Indexed: 12/11/2022] Open
Abstract
Susceptibility to doxorubicin-induced nephropathy (DIN), a toxic model for the induction of proteinuria in mice, is related to the single-nucleotide polymorphism (SNP) C6418T of the Prkdc gene encoding for the DNA-repair enzyme DNA-PKcs. In addition, plasminogen (Plg) has been reported to play a role in glomerular damage. Here, we investigated the interdependence of both factors for the development of DIN. Genotyping confirmed the SNP of the Prkdc gene in C57BL/6 (PrkdcC6418/C6418) and 129S1/SvImJ (PrkdcT6418/T6418) mice. Intercross of heterozygous 129SB6F1 mice led to 129SB6F2 hybrids with Mendelian inheritance of the SNP. After doxorubicin injection, only homozygous F2 mice with PrkdcT6418/T6418 developed proteinuria. Genetic deficiency of Plg (Plg−/−) in otherwise susceptible 129S1/SvImJ mice led to resistance to DIN. Immunohistochemistry revealed glomerular binding of Plg in Plg+/+ mice after doxorubicin injection involving histone H2B as Plg receptor. In doxorubicin-resistant C57BL/6 mice, Plg binding was absent. In conclusion, susceptibility to DIN in 129S1/SvImJ mice is determined by a hierarchical two-hit process requiring the C6418T SNP in the Prkdc gene and subsequent glomerular binding of Plg. This article has an associated First Person interview with the first author of the paper. Summary: Susceptibility to doxorubicin-induced nephropathy in 129S1/SvImJ mice is determined by a hierarchical two-hit process requiring the C6418T single-nucleotide polymorphism in the Prkdc gene and subsequent glomerular binding of plasminogen.
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Affiliation(s)
- Bernhard N Bohnert
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, 72076 Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University Tübingen, 72076 Tübingen, Germany.,German Center for Diabetes Research (DZD), University Tübingen, 72076 Tübingen, Germany
| | - Irene Gonzalez-Menendez
- Institute of Pathology and Neuropathology, Department of Pathology, Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Thomas Dörffel
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Jonas C Schneider
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Mengyun Xiao
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Andrea Janessa
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, 72076 Tübingen, Germany
| | - M Zaher Kalo
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Birgit Fehrenbacher
- Department of Dermatology, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Martin Schaller
- Department of Dermatology, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Nicolas Casadei
- Institute of Genetics, University Hospital Tübingen, 72076 Tübingen, Germany.,NGS Competence Center Tübingen, University Tübingen, Tübingen 72076, Germany
| | - Kerstin Amann
- Institute of Pathology, Department of Nephropathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Christoph Daniel
- Institute of Pathology, Department of Nephropathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Andreas L Birkenfeld
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, 72076 Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University Tübingen, 72076 Tübingen, Germany.,German Center for Diabetes Research (DZD), University Tübingen, 72076 Tübingen, Germany
| | - Florian Grahammer
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Lahoucine Izem
- Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Edward F Plow
- Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology, Department of Pathology, Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, 72076 Tübingen, Germany
| | - Ferruh Artunc
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, 72076 Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University Tübingen, 72076 Tübingen, Germany.,German Center for Diabetes Research (DZD), University Tübingen, 72076 Tübingen, Germany
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Bohnert BN, Dörffel T, Daiminger S, Calaminus C, Aidone S, Falkenau A, Semrau A, Le MJ, Iglauer F, Artunc F. Retrobulbar Sinus Injection of Doxorubicin is More Efficient Than Lateral Tail Vein Injection at Inducing Experimental Nephrotic Syndrome in Mice: A Pilot Study. Lab Anim 2019; 53:564-576. [PMID: 30678519 PMCID: PMC7238670 DOI: 10.1177/0023677218824382] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Doxorubicin-induced nephropathy in mice is a model for studying experimental
nephrotic syndrome. It corresponds to puromycin aminonucleoside nephrosis in
rats. In this model, susceptible 129 S1/SvImJ mice are administered a rapid
intravenous injection that can be accomplished via either the lateral tail vein
or the retrobulbar sinus. Because doxorubicin is a highly toxic substance,
extravasation must be avoided during the administration of the intravenous
injection to prevent the development of large necrotizing lesions and
exacerbation of the animals’ stress. In the present study, we compared the
safety and stress of these two injection routes by using histopathological
analyses of the animals’ orbital cavities or tails, respectively. The injection
of 14.5 µg/g body weight doxorubicin into the mice’s lateral tail veins
(n = 9) or retrobulbar sinuses (n = 19)
caused no clinically detectable stress or impairment. Histopathologies of the
specimens five days after doxorubicin injection revealed inflammatory lesions at
the injection sites in both groups. In the orbital sinus specimens from the
retrobulbar-injected group, fibrosis was evident 25 days after injection.
Moreover, while all of the retrobulbar-injected mice (100%) developed nephrotic
syndrome, tail vein-injected mice had a significantly lower response rate (66%,
p = 0.047, Fisher’s exact test) and exhibited only
attenuated features of nephrotic syndrome. It was therefore concluded that
doxorubicin administration via either lateral tail vein or retrobulbar sinus
injections led to a similar induction of histopathological changes with no
effects on the clinical well-being of the mice. However, retrobulbar sinus
injections were more efficient for inducing experimental nephrotic syndrome.
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Affiliation(s)
- Bernhard N Bohnert
- Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry, University Hospital Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Centre Munich, Eberhard Karls University Tübingen, Germany.,German Centre for Diabetes Research (DZD), Eberhard Karls University Tübingen, Germany
| | - Thomas Dörffel
- Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry, University Hospital Tübingen, Germany
| | - Sophie Daiminger
- Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry, University Hospital Tübingen, Germany
| | - Carsten Calaminus
- Werner Siemens Imaging Centre, Eberhard Karls University Tübingen, Germany
| | - Sandro Aidone
- Werner Siemens Imaging Centre, Eberhard Karls University Tübingen, Germany
| | - Almuth Falkenau
- Institute of Veterinary Pathology, Ludwig-Maximilians-University, Germany
| | - Antje Semrau
- Facility for Animal Welfare, Veterinary Service and Laboratory Animal Science, Eberhard Karls University of Tübingen, Germany
| | - Mai J Le
- Facility for Animal Welfare, Veterinary Service and Laboratory Animal Science, Eberhard Karls University of Tübingen, Germany
| | - Franz Iglauer
- Facility for Animal Welfare, Veterinary Service and Laboratory Animal Science, Eberhard Karls University of Tübingen, Germany
| | - Ferruh Artunc
- Department of Internal Medicine, Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry, University Hospital Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Centre Munich, Eberhard Karls University Tübingen, Germany.,German Centre for Diabetes Research (DZD), Eberhard Karls University Tübingen, Germany
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Haerteis S, Schork A, Dörffel T, Bohnert BN, Nacken R, Wörn M, Xiao M, Essigke D, Janessa A, Schmaier AH, Feener EP, Häring HU, Bertog M, Korbmacher C, Artunc F. Plasma kallikrein activates the epithelial sodium channel in vitro but is not essential for volume retention in nephrotic mice. Acta Physiol (Oxf) 2018; 224:e13060. [PMID: 29489063 DOI: 10.1111/apha.13060] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 02/20/2018] [Accepted: 02/22/2018] [Indexed: 01/04/2023]
Abstract
AIM Recent work has demonstrated that activation of the epithelial sodium channel (ENaC) by aberrantly filtered serine proteases causes sodium retention in nephrotic syndrome. The aim of this study was to elucidate a potential role of plasma kallikrein (PKLK) as a candidate serine protease in this context. METHODS We analysed PKLK in the urine of patients with chronic kidney disease (CKD, n = 171) and investigated its ability to activate human ENaC expressed in Xenopus laevis oocytes. Moreover, we studied sodium retention in PKLK-deficient mice (klkb1-/- ) with experimental nephrotic syndrome induced by doxorubicin injection. RESULTS In patients with CKD, we found that PKLK is excreted in the urine up to a concentration of 2 μg mL-1 which was correlated with albuminuria (r = .71) and overhydration as assessed by bioimpedance spectroscopy (r = .44). PKLK increased ENaC-mediated whole-cell currents, which was associated with the appearance of a 67 kDa γ-ENaC cleavage product at the cell surface consistent with proteolytic activation. Mutating a putative prostasin cleavage site in γ-ENaC prevented channel stimulation by PKLK. In a mouse model for nephrotic syndrome, active PKLK was present in nephrotic urine of klkb1+/+ but not of klkb1-/- mice. However, klkb1-/- mice were not protected from ENaC activation and sodium retention compared to nephrotic klkb1+/+ mice. CONCLUSION Plasma kallikrein is detected in the urine of proteinuric patients and mice and activates ENaC in vitro involving the putative prostasin cleavage site. However, PKLK is not essential for volume retention in nephrotic mice.
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Affiliation(s)
- S. Haerteis
- Institute of Cellular and Molecular Physiology; Friedrich-Alexander University Erlangen-Nürnberg; Erlangen Germany
| | - A. Schork
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
- Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich; University of Tübingen; Tübingen Germany
- German Center for Diabetes Research (DZD); University of Tübingen; Tübingen Germany
| | - T. Dörffel
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
| | - B. N. Bohnert
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
- Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich; University of Tübingen; Tübingen Germany
- German Center for Diabetes Research (DZD); University of Tübingen; Tübingen Germany
| | - R. Nacken
- Institute of Cellular and Molecular Physiology; Friedrich-Alexander University Erlangen-Nürnberg; Erlangen Germany
| | - M. Wörn
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
| | - M. Xiao
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
| | - D. Essigke
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
| | - A. Janessa
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
| | - A. H. Schmaier
- Division of Hematology and Oncology; University Hospitals Cleveland Medical Center; Cleveland OH USA
- Case Western Reserve University; Cleveland OH USA
| | | | - H.-U. Häring
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
- Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich; University of Tübingen; Tübingen Germany
- German Center for Diabetes Research (DZD); University of Tübingen; Tübingen Germany
| | - M. Bertog
- Institute of Cellular and Molecular Physiology; Friedrich-Alexander University Erlangen-Nürnberg; Erlangen Germany
| | - C. Korbmacher
- Institute of Cellular and Molecular Physiology; Friedrich-Alexander University Erlangen-Nürnberg; Erlangen Germany
| | - F. Artunc
- Division of Endocrinology, Diabetology, Vascular Disease, Nephrology and Clinical Chemistry; Department of Internal Medicine; University Hospital Tübingen; Tübingen Germany
- Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich; University of Tübingen; Tübingen Germany
- German Center for Diabetes Research (DZD); University of Tübingen; Tübingen Germany
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Abstract
We determined the sensitivity of computed tomography and color duplex ultrasonography in the detection and characterization of vascular complications in acute pancreatitis. The relationship of these complications with the etiology and activity of the disease was assessed. In a prospective study, 189 patients with acute pancreatitis seen in the Department of Gastroenterology. Charité Hospital in Berlin over a period of 38 months underwent color duplex ultrasonography every second day for 3 weeks and thereafter at least once a week for 2 months. Dynamic computed tomography was performed within 72 hours after admission, and follow-up computed tomography scans were obtained. In 45 patients (23%), at least temporary thromboses of portal venous vessels were demonstrated by color duplex ultrasonography. The incidence of venous thromboses was 30% in severe acute pancreatitis with fluid collections without necroses and 57% in necrotizing pancreatitis. In 27 of those 45 patients, a formation of collaterals was documented. In 13 patients, arterial pseudoaneurysms were demonstrated. Vascular complications were significantly more frequent in alcohol-induced than in gallstone-induced pancreatitis. Only 62% of all sonographically diagnosed thromboses and only 32% of all collaterals were demonstrated by computed tomography. The prevalence of vascular complications in acute pancreatitis was much higher as suspected. The risk of gastrointestinal bleeding was lower than previously reported. Color duplex sonography is the method of choice for the detection of vascular complications in acute pancreatitis.
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Affiliation(s)
- T Dörffel
- Outpatient Clinics of Internal Medicine, Humboldt University, Berlin, Germany.
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