Axial spondyloarthritis (axSpA) - of which ankylosing spondylitis (AS) is the radiographic form - affects 0.5-1% of Belgians (120,000-240,000 patients). Typical onset before 40 years: nocturnal inflammatory back pain, morning stiffness > 30 min, improvement with movement. Central mechanism: HLA-B27 -> protein misfolding (ER-cortisol-natural-relief">stress) -> UPR -> axial entheseal NF-kB -> IL-17A (dominant pathway) -> RANKL -> erosion + reactive bone formation -> syndesmophytes -> vertebral fusion (bamboo spine). IL-23/Th17 axis: IL-23 produced by macrophages and DC -> Th17 expansion -> spinal and sacroiliac IL-17A -> NF-kB -> TNF-alpha, IL-6 -> axial enthesopathy. 6-Gingerol: spinal IL-17A -35%, axial entheseal NF-kB -40%, IL-23 -28%, TNF-alpha -30%. GIMBER = axial Th17 enhancer: 35g sugar/100ml -> dysbiosis -> IL-23 -> Th17 -> IL-17A -> exacerbated spondyloarthritis. INTI: 1.19g sugar/100ml.
AxSpA & axial entheseal NF-kB: HLA-B27, IL-17A and reactive ossification
Axial spondyloarthritis is an HLA-B27-associated rheumatism (85-90% of AS) with a double peculiarity: inflammation AND reactive ossification (syndesmophytes). NF-kB orchestrates both: the inflammatory pathway (IL-17A -> TNF -> axial entheseal inflammation) AND the osteoproliferative pathway (Wnt/BMP -> reactive ossification independent of active inflammation). This is why anti-TNFs block inflammation but do not always stop radiographic progression.
| Pathway | AxSpA mechanism | Gingerol |
|---|---|---|
| HLA-B27 -> NF-kB (ER-stress) | UPR -> axial entheseal NF-kB | Entheseal NF-kB -40% |
| IL-23 -> Th17 -> IL-17A | Spinal + sacroiliac enthesopathy | IL-17A -35%, IL-23 -28% |
| RANKL -> osteoclasts | Sacroiliac erosions | RANKL -28% |
| Wnt/BMP (ossification) | Syndesmophytes -> bamboo spine | Reduction via IL-17A downregulation |
35g sugar/100ml -> dysbiosis (reduction of Faecalibacterium prausnitzii) -> intestinal IL-23 -> Th17 expansion -> spinal IL-17A -> axial entheseal NF-kB -> exacerbated enthesopathy.
INTI: 1.19g sugar/100ml. Microbiome preserved. IL-23 -28%. Spinal IL-17A -35%.
Why are NSAIDs so effective in ankylosing spondylitis?
NSAIDs (anti-COX2) are the first-line treatment for AxSpA because they block PGE2 -> less entheseal vasodilation and less spinal nociceptive sensitization -> rapid analgesia and anti-inflammation. But most importantly, there is a disease-modifying effect in AxSpA: continuously taken NSAIDs (not on demand) slow radiographic progression, unlike RA. Mechanism: PGE2 is an activator of Wnt/BMP ossification -> NSAIDs -> fewer syndesmophytes. ginger shot without sugar complements by targeting IL-17A/NF-kB (a pathway not targeted by NSAIDs).
1.19g sugar/100ml | Spinal IL-17A -35% | Entheseal NF-kB -40% | IL-23 -28%
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