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Helmke A, Hüsing AM, Gaedcke S, Brauns N, Balzer MS, Reinhardt M, Hiss M, Shushakova N, de Luca D, Prinz I, Haller H, von Vietinghoff S. Peritoneal dialysate-range hypertonic glucose promotes T-cell IL-17 production that induces mesothelial inflammation. Eur J Immunol 2020; 51:354-367. [PMID: 32926407 DOI: 10.1002/eji.202048733] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 05/04/2020] [Revised: 08/04/2020] [Accepted: 09/11/2020] [Indexed: 12/25/2022]
Abstract
Peritoneal dialysis (PD) employs hypertonic glucose to remove excess water and uremic waste. Peritoneal membrane failure limits its long-term use. T-cell cytokines promote this decline. T-cell differentiation is critically determined by the microenvironment. We here study how PD-range hypertonic glucose regulates T-cell polarization and IL-17 production. In the human peritoneal cavity, CD3+ cell numbers increased in PD. Single cell RNA sequencing detected expression of T helper (Th) 17 signature genes RORC and IL23R. In vitro, PD-range glucose stimulated spontaneous and amplified cytokine-induced Th17 polarization. Osmotic controls l-glucose and d-mannose demonstrate that induction of IL-17A is a substance-independent, tonicity dose-dependent process. PD-range glucose upregulated glycolysis and increased the proportion of dysfunctional mitochondria. Blockade of reactive-oxygen species (ROS) prevented IL-17A induction in response to PD-range glucose. Peritoneal mesothelium cultured with IL-17A or IL17F produced pro-inflammatory cytokines IL-6, CCL2, and CX3CL1. In PD patients, peritoneal IL-17A positively correlated with CX3CL1 concentrations. PD-range glucose-stimulated, but neither identically treated Il17a-/- Il17f-/- nor T cells cultured with the ROS scavenger N-acetylcysteine enhanced mesothelial CX3CL1 expression. Our data delineate PD-range hypertonic glucose as a novel inducer of Th17 polarization in a mitochondrial-ROS-dependent manner. Modulation of tonicity-mediated effects of PD solutions may improve membrane survival.
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Affiliation(s)
- Alexandra Helmke
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Anne M Hüsing
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Svenja Gaedcke
- German Center for Lung Research, Hannover Medical School, Hannover, Germany
| | - Nicolas Brauns
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Michael S Balzer
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Martin Reinhardt
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Marcus Hiss
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Nelli Shushakova
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - David de Luca
- German Center for Lung Research, Hannover Medical School, Hannover, Germany
| | - Immo Prinz
- Hannover Medical School, Institute for Immunology, Hannover, Germany
| | - Hermann Haller
- Division of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
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Rotola A, Caselli E, Cassai E, Tola MR, Granieri E, Luca DD. Novel human herpesviruses and multiple sclerosis. J Neurovirol 2000; 6 Suppl 2:S88-91. [PMID: 10871793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
It has been suggested that human herpesvirus 6 (HHV-6) might be involved in the pathogenesis of multiple sclerosis (MS). However, studies of the association between HHV-6 and MS are hindered by the difficulty in discriminating between latent and active infection. We undertook a study to determine whether HHV-6 establish a systemic active infection in the course of MS, and to investigate possible roles of HHV-7, a herpesvirus closely related to HHV-6. To discriminate between latent and active infection, we analysed viral transcription. The results indicate that both viruses are prevalent in PBMCs of MS patients as in healthy controls, and that viral sequences are maintained in a non-transcriptional state. These observations indicate that further studies should define the state of viral persistence in the central nervous system.
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MESH Headings
- DNA, Viral/analysis
- Gene Expression Regulation, Viral
- Herpesviridae Infections/immunology
- Herpesvirus 6, Human/genetics
- Herpesvirus 6, Human/immunology
- Herpesvirus 7, Human/genetics
- Herpesvirus 7, Human/immunology
- Humans
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/virology
- Multiple Sclerosis, Relapsing-Remitting/immunology
- Multiple Sclerosis, Relapsing-Remitting/virology
- Polymerase Chain Reaction
- RNA, Viral/analysis
- Transcription, Genetic
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Affiliation(s)
- A Rotola
- Department of Experimental and Diagnostic Medicine, Section of Microbiology, University of Ferrara, Italy
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