Sea Moss for IgA Vasculitis (HSP): Anti-Inflammatory, IgA1 Immune Complex Small-Vessel Vasculitis & Mineral Support

IgA vasculitis (IgAV, formerly Henoch-Schonlein purpura/HSP) is the most common systemic vasculitis in children and a rare but serious adult disease, driven by the same galactose-deficient IgA1 (Gd-IgA1) mechanism as IgA nephropathy: aberrant IgA1 O-glycosylation → anti-Gd-IgA1 IgG/IgA autoantibodies → circulating immune complexes → vascular IgA1 deposition → complement C3/MBL/lectin pathway activation → NF-kB/IL-6/IL-8 endothelial/leukocyte activation → leukocytoclastic vasculitis of small vessels (skin capillaries/venules, gut submucosal, synovial, glomerular); classic tetrad: palpable purpura (lower extremities/buttocks — hallmark), arthritis/arthralgia (knee/ankle), abdominal pain (colicky, GI bleeding/intussusception in children), and nephritis (IgAV-N — histologically identical to IgAN, leading cause of morbidity); adults have more severe renal involvement (~55% IgAV-N vs ~20% children). Sea moss fucoidan modulates mesangial/vascular NF-kB, IL-6, complement C3/MBL, TGF-beta1; selenium supports renal/skin GPx defense; omega-3 EPA/DHA modulates glomerular eicosanoid balance and resolvin D1 (RCT data from IgAN trials directly applicable); zinc supports podocyte metalloenzymes and FOXP3+ Treg. Self-limiting in children (90% resolve <4 weeks); adult treatment: prednisone (articular/abdominal); RAAS blockade (ACE-I/ARB) + corticosteroids for IgAV-N; targeted-release budesonide (Nefecon/Tarpeyo) applicable; MMF/CYC severe nephritis.

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