Serum cytokine levels in patients with oral mucous membrane disorders

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Abstract
Serum cytokine levels were examined in 18 oral squamous cell carcinoma (SCC), 26 lichen planus (OLP), 20 recurrent aphthous stomatitis (RAS), 8 herpetic gingivostomatitis (HGS), 16 pseudomembrane candidiasis (PMC) and 19 acute bacterial infection (AB1) eases. All SCC and most PMC patients possessed clear serum IL‐3. No clear increase of IL‐4 was observed in most cases though over 20 pg/ml were found in a few OLP, RAS and AB1. ABI exhibited the highest IL‐6. and the cytokine level was lower in RAS, PMC. HGS and OLP in this order. Suppressed IL‐6 activity was elevated with improvement of HGS lesion. TNp‐α increased in 9 OLP, but the levels were below 100 pg/ml in all cases. Most SCC possessed higher GM‐CSF activity than the controls. Increase of the cytokine corresponding with improvement of the oral lesion was seen in HGS, but not in OLP. From these results, each serum cytokine seems to reflect a characteristic pathophysiology of individual oral disorder.