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Vock C, Wegmann M, Fehrenbach H. The role of the TGF-β pseudoreceptor Bambi in a mouse model of allergic bronchial asthma. Pneumologie 2015. [DOI: 10.1055/s-0035-1548658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Webering S, Lunding L, Fehrenbach H, Wegmann M. Treatment of airway inflammation and airway hyperresponsiveness in a mouse model of neutrophilic asthma using a RORγt-specific siRNA. Pneumologie 2015. [DOI: 10.1055/s-0035-1548659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lunding L, Webering S, Vock C, Schröder A, Raedler D, Schaub B, Fehrenbach H, Wegmann M. IL-37 requires IL18Rα and SIGIRR/IL-1R8 to ameliorate experimental allergic asthma in mice. Pneumologie 2015. [DOI: 10.1055/s-0035-1548656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wagner C, Fehrenbach H. Drosophila melanogaster – a suitable model system to study epithelial immune responses in-vivo. Pneumologie 2015. [DOI: 10.1055/s-0035-1548648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lunding L, Webering S, Vock C, Schröder A, Raedler D, Schaub B, Fehrenbach H, Wegmann M. IL-37 requires IL-18Rα and SIGIRR/IL-1R8 to diminish allergic airway inflammation in mice. Allergy 2015; 70:366-73. [PMID: 25557042 DOI: 10.1111/all.12566] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2014] [Indexed: 12/25/2022]
Abstract
BACKGROUND Interleukin (IL) 37 has been described as a negative regulator of innate immunity, as it reduces the activation and cytokine production of different innate immune cells. Recently, results from the CLARA childhood asthma cohort suggested an implication of IL-37 for human asthma pathogenesis. This study aimed to investigate the effects of IL-37 on allergic airway inflammation in a mouse model of experimental asthma. METHODS Peripheral blood mononuclear cells (PBMCs) of children were cultured for 48 h (anti-CD3/anti-CD28 stimulation or unstimulated), and IL-37 concentrations in supernatants were determined. Wild-type, IL-18Rα-deficient ((-/-) ), and SIGIRR(-/-) C57BL/6 mice were sensitized to ovalbumin (OVA) and challenged with OVA aerosol to induce acute experimental asthma, and IL-37 was applied intranasally prior to each OVA challenge. Airway hyper-responsiveness (AHR), airway inflammation, cytokine levels in broncho-alveolar lavage fluid, and mucus production were determined. RESULTS IL-37 production of human PBMCs was significantly lower in allergic asthmatics vs healthy children. In wild-type mice, intranasal administration of IL-37 ablated allergic airway inflammation as well as cytokine production and subsequently diminished the hallmarks of experimental asthma including mucus hyperproduction and AHR. In contrast, local application of IL-37 produced none of these effects in mice lacking either IL18Rα or SIGIRR/IL-1R8. CONCLUSIONS This study demonstrates that IL-37 is able to ablate a TH2 cell-directed allergic inflammatory response and the hallmarks of experimental asthma in mice, suggesting that IL-37 may be critical for asthma pathogenesis. Furthermore, these data suggest a mode of action of IL-37 that involves IL18Rα as well as the orphan receptor SIGIRR/IL-1R8.
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Lunding L, Webering S, Vock C, Schröder A, Raedler D, Schaub B, Fehrenbach H, Wegmann M. IL-37 requires IL18Rα and SIGIRR to ameliorate experimental allergic asthma in mice. Pneumologie 2015. [DOI: 10.1055/s-0035-1544601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Webering S, Lunding L, Fehrenbach H, Wegmann M. Specific siRNA targeting RORγt inhibits airway inflammation and airway hyperresponsiveness in a mouse model of neutrophilic asthma. Pneumologie 2015. [DOI: 10.1055/s-0035-1544604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Fehrenbach H, Decker C, Eisenberger T, Frank V, Hampel T, Walden U, Amann KU, Krüger-Stollfuß I, Bolz HJ, Häffner K, Pohl M, Bergmann C. Mutations in WDR19 encoding the intraflagellar transport component IFT144 cause a broad spectrum of ciliopathies. Pediatr Nephrol 2014; 29:1451-6. [PMID: 24504730 DOI: 10.1007/s00467-014-2762-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 12/30/2013] [Accepted: 01/09/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND An emerging number of clinically and genetically heterogeneous diseases now collectively termed ciliopathies have been connected to the dysfunction of primary cilia. We describe an 8-year-old girl with a complex phenotype that did not clearly match any familiar syndrome. CASE-DIAGNOSIS/TREATMENT Hypotonia, facial dysmorphism and retardation were noted shortly after birth. Other features included short stature, mild skeletal anomalies, strabism, deafness, subdural hygroma, hepatosplenomegaly and end-stage renal failure. Renal biopsy revealed tubular atrophy, interstitial fibrosis and segmental glomerulosclerosis. After exclusion of a chromosomal abnormality by array-comparative genomic hybridization (CGH), we performed next-generation sequencing (NGS) using a customized panel that targeted 131 genes known or hypothesized to cause ciliopathies. We identified the novel homozygous WDR19 mutation c.1483G > C (p.Gly495Arg) that affects an evolutionarily highly conserved residue in the intraflagellar transport protein IFT144, is absent from databases and is predicted to be pathogenic by all bioinformatic sources used. CONCLUSION Mutations in WDR19 encoding the intraflagellar transport component IFT144 have recently been described in single families with the clinically overlapping skeletal ciliopathies Jeune and Sensenbrenner syndromes, combined or isolated nephronophthisis (NPHP) and retinitis pigmentosa (RP) (Senior-Loken syndrome). Our patient emphasizes the usefulness and efficiency of a comprehensive NGS panel approach in patients with unclassified ciliopathies. It further suggests that WDR19 mutations can cause a broad spectrum of ciliopathies that extends to Jeune and Sensenbrenner syndromes, RP and renal NPHP-like phenotypes.
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Webering S, Lunding L, Behrends J, Fehrenbach H, Wegmann M. RORγt-specific RNAi decreases allergic airway inflammation and airway hyperresponsiveness in a mouse model of neutrophilic asthma. Pneumologie 2014. [DOI: 10.1055/s-0034-1376774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Webering S, Lunding L, Vock C, Fehrenbach H, Wegmann M. α-melanocyte acts as an anti-inflammatory regulator in allergic bronchial asthma. Pneumologie 2014. [DOI: 10.1055/s-0034-1367906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Vock C, Wegmann M, Fehrenbach H. The TGF-ß antagonist Bambi impacts the expression of pro-inflammatory cytokines in a mouse model of allergic bronchial asthma. Pneumologie 2014. [DOI: 10.1055/s-0034-1367908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lunding L, Webering S, Vock C, Behrends J, Hölscher C, Fehrenbach H, Wegmann M. IL-17 producing NK cells are suspected to be critical for the IL-17 dependent TLR-3 triggered aggravation of experimental asthma. Pneumologie 2014. [DOI: 10.1055/s-0034-1367781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Webering S, Lunding L, Fehrenbach H, Wegmann M. Treatment of allergic airway inflammation and airway hyperresponsiveness using RORγt specific RNAi. Pneumologie 2014. [DOI: 10.1055/s-0034-1367907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schlick S, Kopf J, Ströbele M, Fehrenbach H. Airway region-specific effects of carbon black nanoparticles (CBNP). Pneumologie 2013. [DOI: 10.1055/s-0033-1357067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Fehrenbach H, Müller B, König P, Hansen T, Bockhorn H. CarbonBlack: a joint research project to establish a test system for predicting human-toxicological effects of synthetic carbon black nanoparticles*. Pneumologie 2013. [DOI: 10.1055/s-0033-1357063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Fehrenbach H. „Gute Partikel – böse Partikel“. Abschlusssymposium des NanoCare-Forschungsverbundes CarbonBlack. Pneumologie 2013. [DOI: 10.1055/s-0033-1357069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hansen T, Kopf J, Danov O, Ströbele M, Braun A, Sewald K, Bockhorn H, Fehrenbach H. In vitro and ex vivo toxicity screening for predicting toxicological effects of synthetic carbon black nanoparticles in humans. Pneumologie 2013. [DOI: 10.1055/s-0033-1357065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schlick S, Ströbele M, Kopf J, Hansen T, Bockhorn H, Fehrenbach H. Airway region-specific effects of carbon black nanoparticles (CBNP). Pneumologie 2013. [DOI: 10.1055/s-0033-1334689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Höcker B, Fickenscher H, Delecluse HJ, Böhm S, Küsters U, Schnitzler P, Pohl M, John U, Kemper MJ, Fehrenbach H, Wigger M, Holder M, Schröder M, Billing H, Fichtner A, Feneberg R, Sander A, Köpf-Shakib S, Süsal C, Tönshoff B. Epidemiology and morbidity of Epstein-Barr virus infection in pediatric renal transplant recipients: a multicenter, prospective study. Clin Infect Dis 2012; 56:84-92. [PMID: 23042966 DOI: 10.1093/cid/cis823] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The epidemiology and morbidity of Epstein-Barr virus (EBV) infection in pediatric renal transplant recipients have been characterized insufficiently. METHODS In a prospective, multicenter study among 106 pediatric kidney allograft recipients aged 11.4 ± 5.9 years, we investigated the epidemiology of EBV infection and the relationship between EBV load, EBV serology, and EBV-related morbidity (posttransplant lymphoproliferative disease [PTLD] or symptomatic EBV infection, defined as flu-like symptoms or infectious mononucleosis). RESULTS EBV primary infection occurred in 27 of 43 (63%) seronegative patients and reactivation/reinfection in 28 of 63 (44%) seropositive patients. There was no association between the degree or duration of EBV load and EBV-related morbidity: The vast majority (17 of 18 [94%]) of patients with a high, persistent EBV load remained PTLD-free throughout a follow-up of 5.0 ± 1.3 years, while 2 of 3 (66%) patients with EBV-related PTLD exhibited only a low EBV load beforehand. Eight of 18 (44%) patients with a high, persistent EBV load remained asymptomatic during a follow-up of 5.3 ± 2.9 years. Multivariate analysis identified the EBV high-risk (D(+)/R(-)) serostatus (odds ratio [OR], 7.07; P < .05), the presence of human leukocyte antigen (HLA)-DR7 (OR, 5.65; P < .05), and the intensity of the immunosuppressive therapy (OR, 1.53; P < .01) as independent risk factors for the development of a symptomatic EBV infection. CONCLUSIONS Presence of EBV high-risk seroconstellation, HLA-DR7, and intensity of immunosuppressive therapy are significant risk factors for a symptomatic EBV infection, whereas there is no close association between the degree or duration of EBV load and EBV-related morbidity. Clinical Trials Registration. NCT00963248.
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Beck BB, Baasner A, Buescher A, Habbig S, Reintjes N, Kemper MJ, Sikora P, Mache C, Pohl M, Stahl M, Toenshoff B, Pape L, Fehrenbach H, Jacob DE, Grohe B, Wolf MT, Nürnberg G, Yigit G, Salido EC, Hoppe B. Novel findings in patients with primary hyperoxaluria type III and implications for advanced molecular testing strategies. Eur J Hum Genet 2012; 21:162-72. [PMID: 22781098 DOI: 10.1038/ejhg.2012.139] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Identification of mutations in the HOGA1 gene as the cause of autosomal recessive primary hyperoxaluria (PH) type III has revitalized research in the field of PH and related stone disease. In contrast to the well-characterized entities of PH type I and type II, the pathophysiology and prevalence of type III is largely unknown. In this study, we analyzed a large cohort of subjects previously tested negative for type I/II by complete HOGA1 sequencing. Seven distinct mutations, among them four novel, were found in 15 patients. In patients of non-consanguineous European descent the previously reported c.700+5G>T splice-site mutation was predominant and represents a potential founder mutation, while in consanguineous families private homozygous mutations were identified throughout the gene. Furthermore, we identified a family where a homozygous mutation in HOGA1 (p.P190L) segregated in two siblings with an additional AGXT mutation (p.D201E). The two girls exhibiting triallelic inheritance presented a more severe phenotype than their only mildly affected p.P190L homozygous father. In silico analysis of five mutations reveals that HOGA1 deficiency is causing type III, yet reduced HOGA1 expression or aberrant subcellular protein targeting is unlikely to be the responsible pathomechanism. Our results strongly suggest HOGA1 as a major cause of PH, indicate a greater genetic heterogeneity of hyperoxaluria, and point to a favorable outcome of type III in the context of PH despite incomplete or absent biochemical remission. Multiallelic inheritance could have implications for genetic testing strategies and might represent an unrecognized mechanism for phenotype variability in PH.
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Schlick S, Fehrenbach H. Airway region-specific effects of Carbon Black nanoparticles. Pneumologie 2012. [DOI: 10.1055/s-0032-1313582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Abdullah M, Kähler D, Marwitz S, Vock C, Reiling N, Kugler C, Fehrenbach H, Pedersen F, Watz H, Rabe KF, Zabel P, Vollmer E, Dalhoff K, Goldmann T. Pulmonary Haptoglobin (pHp): a candidate gene and its validation. Pneumologie 2012. [DOI: 10.1055/s-0032-1315491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Vock C, Yildirim AÖ, Wegmann M, Fehrenbach H. Region-specific regulation of mucus production in allergic asthma is dependent on IL-13R alpha 1 expression. Pneumologie 2012. [DOI: 10.1055/s-0032-1315472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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49
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Lunding L, Wegmann M, Vock C, Fehrenbach H. TLR-3 triggered aggravation of experimental asthma depends on IL-17. Pneumologie 2012. [DOI: 10.1055/s-0032-1315470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Fehrenbach H. Alveolar epithelial type II cells from embryonic stem cells: knights in shining armour? Eur Respir J 2012; 39:240-1. [PMID: 22298611 DOI: 10.1183/09031936.00162111] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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