Zusammenfassung
Die Gicht wird durch eine Entzündungsreaktion auf kristalline Natriumuratausfällungen im Gelenk und im periartikulären Gewebe hervorgerufen. Natriumuratkristalle aktivieren den NOD-like-Rezeptor (NLR) NALP3, der zur Gruppe der Mustererkennungsrezeptoren („pattern recognition receptors“/PRR) gezählt wird. Folge der NALP3-Aktivierung ist die Überführung der Pro-Form des Interleukin- (IL-)1b in aktives IL-1b, eine damit verbundene Aktivierung weiterer Zellen und ein IL-8-vermittelter Neutrophileneinstrom ins Gelenk. Diese neuen Erkenntnisse zur Pathophysiologie der Gicht bildeten den Ausgangspunkt für eine offene Pilotstudie, in der kürzlich 10 Gichtpatienten mit dem löslichen IL-1R-Antagonisten Anakinra erfolgreich behandelt wurden. Die physiologische Rolle von Natriumuratkristallen liegt möglicherweise in einer Funktion als „Danger-Signal“ im Gewebe, wo sie dendritische Zellen zur Reifung stimulieren. Die Bedeutung von NLR und anderen PRR für die Pathogenese (auto-)inflammatorischer Erkrankungen wird durch die Identifizierung von krankheitsassoziierten Polymorphismen unterstrichen (z. B. NALP3: verschiedene hereditäre, autoinflammatorischer Syndrome, „nucleotide-binding oligomerization domain containing protein 2“/NOD2: M. Crohn, Blausyndrom). Neben der Erkennung von „Danger-assoziierten“ Molekülen wie Natriumuratkristallen kommt PRR bei der Erkennung von Autoantigen und Aktivierung des angeborenen und adaptiven Immunsystems bei Autoimmunerkrankungen eine Bedeutung zu. So wurden jüngst die durch Erkennung DNS- und RNS-haltiger Immunkomplexe über „Toll-like-Rezeptoren“ (TLR) induzierte Aktivierung von B-Zellen beim systemischen Lupus erythematodes und die zur Reifung dendritischer Zellen führende Erkennung der Proteinase 3 über den „Protease-activated receptor-2“ (PAR-2) bei der Wegener-Granulomatose berichtet.
Abstract
Gout is caused by monosodium urate (MSU) crystal-induced inflammation of the joints and periarticular tissues. MSU crystals activate the NOD-like receptor (NLR) NALP3, which functions as a pattern recognition receptor (PRR). Activated NALP3 mediates interleukin-1b (IL-1b) generation from its inactive pro-form, resulting in the activation of further cells and an IL-8-mediated neutrophil influx into the joint. Based on these new findings on the pathophysiology of gout, an open pilot study has recently demonstrated successful treatment of gout with the soluble IL-1R antagonist anakinra in 10 patients. The physiological role of MSU crystals might be that of a danger signal in peripheral tissues, where they stimulate dendritic cell maturation. The role of PRRs such as the NLR is underlined by NALP3 mutations causing hereditary autoinflammatory syndromes and NOD2 polymorphisms as genetic risk factors for Crohn’s disease. In addition to the recognition of danger-associated molecular patterns (e.g. MSU), PRRs confer autoantigen recognition and activation of the innate and adaptive immune system in autoimmune diseases. Detection of RNA and DNA-containing immune complexes by toll-like receptors inducing B-cell activation in systemic lupus erythematosus and of proteinase 3 by the protease-activated receptor-2 inducing dendritic cell maturation in Wegener’s granulomatosis have recently been reported.
Abbreviations
- ASC:
-
„Apoptosis-associated speck-like protein“
- CARD:
-
„Caspase recruitment domain“
- CINCA:
-
„Chronic infantile neurological cutaneous and articular syndrome“
- DAMP:
-
“(Host) danger-associated molecular pattern“
- FCAS:
-
„Familial cold autoinflammatory syndrome“
- FCU:
-
„Familial cold urticaria“
- FIIND:
-
„Domain with function to find“
- IL:
-
Interleukin
- LRR:
-
„Leucin-rich repeat“
- MWS:
-
„Muckle-Wells syndrome“
- NACHT:
-
NAIP („neuronal apoptosis inhibitory protein“), CIITA („MHC class II transcription activator“), HET-E („incompatibility locus protein from Podospora anserine“) and TP1 („telomerase-associated protein“)
- NAD:
-
„NACHT-associated domain“
- NALP3:
-
„NACHT, LRR, and pyrine domain containing protein 3“
- NLR:
-
„NOD-like receptor“
- NOD2:
-
„Nucleotide-binding oligomerization domain containing protein 2“
- NOMID:
-
„Neonatal-onset multisystem inflammatory disease“
- PAMP:
-
„Pathogen associated molecular pattern“
- PAR-2:
-
„Protease-activated receptor-2“
- PRR:
-
„Pattern-recognition receptor“
- PYD:
-
„Pyrin domain“
- RIG:
-
„Retinoic acid-like gene“
- RLH:
-
„RIG-like helicase“
- SLE:
-
„Systemischer Lupus erythematodes“
- TGF-β:
-
„Transforming growth factor beta“
- TLR:
-
„Toll-like receptor“
- TNF-α:
-
Tumornekrosefaktor alpha
Literatur
Chapman PT, Yarwood H, Harrison AA et al. (1997) Endothelial activation in monosodium urate monohydrate crystal-induced inflammation: In vitro and in vivo studies on the roles of tumor necrosis factor alpha and interleukin-1. Arthritis Rheum 40: 955–965
Chen CJ, Shi Y, Hearn A et al. (2006) MyD88-dependent IL-1 receptor signalling is essential for gouty inflammation stimulated by monosodium urate crystals. J Clin Invest 116: 2262–2271
Csernok E, Ai M, Gross WL et al. (2006) Wegener’s autoantigen induces maturation of dendritic cells and licences them for Th1 priming via the protease-activated receptor-2 pathway. Blood 107: 4440–4448
Duerr RH, Taylor KD, Brant SR et al. (2006) A genome-wide association study identifies IL23R as an inflammatory bowel disease gene. Science 314: 1461–1463
Faires JS, McCarty DJ (1962) Acute arthritis in man and dog after intrasynovial infection of sodium urate crystals. Lancet 280: 682–685
Goldbach-Mansky R, Dailey N, Canna S et al. (2006) Neonatal-onset multisystem inflammatory disease responsive to interleukin-1b inhibition. N Engl J Med 355: 581–592
Hachicha M, Naccache PH, McColl SR (1995) Inflammatory microcrystalls differentially regulate the secretion of macrophage inflammatory protein 1 and interleukin-8 by human neutrophils: a possible mechanism of neutrophil recruitment to sites of inflammation in synovitis. J Exp Med 182: 2019–2025
Hampe J, Franke A, Rosenstiel P et al. (2007) A genome-wide association scan of nonsynonymous SNPs identifies a susceptibility variant for Crohn disease in ATG16L1. Nat Genet 39: 207–211
Jin Y, Mailloux CM, Gowan K et al. (2007) NALP1 in vitiligo-associated multiple autoimmune disease. N Engl J Med 356: 1216–1225
Lamprecht P (2006) Vom Gen zur Therapie: Hereditäre Fiebersyndrome, Gicht und Entzündung. Z Rheumatol 65: 610–612
Landis RC, Yagnik DR, Florey O et al. (2002) Safe disposal of inflammatory monosodium urate monohydrate crystals by differentiated macrophages. Arthritis Rheum 46: 3026–3033
Liu-Bryan R, Pritzker K, Firestein GS, Terkeltaub R (2005) TLR2 signaling in chondrocytes drives calcium pyrophosphate dihydrate and monosodium urate crystal-induced nitric oxide generation. J Immunol 174: 5016–5023
Liu-Bryan R, Scott P, Sydlaske A et al. (2005) Innate immunity conferred by Toll-like receptors 2 and 4 and myeloid differentiation factor 88 expression is pivotal to monosodium urate monohydrate crystal-induced inflammation. Arthritis Rheum 52: 2936–2946
Marshak-Rothstein A (2006) Toll-like receptors in systemic autoimmune disease. Nat Rev Immunol 6: 823–835
Martinon F, Petrilli V, Mayor A et al. (2006) Gout-associated uric acid crystals activate the NALP3 inflammasome. Nature 440: 237–241
Martinon F, Glimcher LH (2006) Gout: New insights into an old disease. J Clin Invest 116: 2073–2075
Matzinger P (2007) Friendly and dangerous signals: Is the tissue in control? Nat Immunol 8: 11–13
Meylan E, Tschopp J, Karin M (2006) Intracellular pattern recognition receptors in the host response. Nature 442: 39–44
Nishimura A, Akahoshi T, Takahashi M et al. (1997) Attenuation of monosodium urate crystal-induced arthritis in rabbits by a neutralizing antibody against interleukin-8. J Leukoc Biol 62: 444–449
Pascual E, Jovani V (1995) A quantative study of the phagocytosis of urate crystals in the synovial joints of patients with gout. Br J Rheumatol 34: 724–726
Rosenstiel P, Till A, Schreiber S (2007) NOD-like receptors and human diseases. Microbes Infect 9: 648–657
Rothschild BM, Tanke D, Carpenter K (1997) Tyrannosaurs suffered from gout. Nature 387: 357
Samuels J, Ozen S (2006) Familial Mediterranean fever and the other autoinflammatory syndromes: Evaluation of the patient with recurrent fever. Curr Opin Rheumatol 18: 108–117
Shi Y, Evans JE, Rock KL. (2003) Molecular identification of a danger signal that alerts the immune system to dying cells. Nature 425: 516–525
So A, De Smedt T, Revaz S, Tschopp J (2007) A pilot study of IL-1 inhibition by anakinra in acute gout. Arthritis Res Ther 9: R28–R33
Shirahama T, Cohen AS (1974) Ultrastructural evidence for leakage of lysosomal contents after phagocytosis of monosodium urate crystals. Am J Pathol 76: 501–520
Tausche AK, Richter K, Grässler A et al. (2004) Severe gouty arthritis refractory to anti-inflammatory drugs: Treatment with anti-tumour necrosis factor-a as a new option. Ann Rheum Dis 63: 1351–1352
Tausche AK, Unger S, Richter K et al. (2006) Hyperurikämie und Gicht: Diagnostik und Therapie. Internist 47: 509–520
Yagnik DR, Evans BJ, Florey O et al. (2004) Macrophage release of transforming growth factor b1 during resolution of monosodium urate monohydrate crystal-induced inflammation. Arthritis Rheum 50: 2273–2280
Zurier RB, Hoffstein S, Weismann G (1978) Mechanisms of lysosomal enzyme release from human leukocytes. J Cell Biol 58: 27–41
Danksagung
Unterstützt durch die Deutsche Forschungsgemeinschaft (DFG: KFO170), das Land Schleswig-Holstein (Innovationsfonds) und den Verein zur Förderung der Erforschung und Bekämpfung rheumatischer Erkrankungen Bad Bramstedt e. V.
Interessenkonflikt
Der korrespondierende Autor gibt an, dass kein Interessenkonflikt besteht.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lamprecht, P., Till, A. & Kabelitz, D. Neue Aspekte zur Pathogenese der Gicht. Z. Rheumatol. 67, 151–156 (2008). https://doi.org/10.1007/s00393-007-0254-5
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00393-007-0254-5