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  • Title: [Impact of serum epidermal growth factor on progressive psoriasis vulgaris and regulation of Chinese herbal medicine for cleaving heat, cooling blood, and detoxicating on it].
    Author: Ma LL, Chen PF, Luo F.
    Journal: Zhongguo Zhong Xi Yi Jie He Za Zhi; 2008 Aug; 28(8):733-5. PubMed ID: 18928101.
    Abstract:
    OBJECTIVE: To investigate the impact of serum epidermal growth factor (EGF) on progressive psoriasis vulgaris and the regulatory effect of Chinese herbal medicine on it. METHODS: Serum level of EGF was measured in 31 patients with progressive psoriasis vulgaris (the tested group) and 17 healthy subjects (the control group) by ELISA. The changes in EGF level and condition of illness were observed before and after patients orally administered Chinese composite recipe for clearing heat, cooling blood and removing toxic substances for 10 weeks, and the severity of illness was assessed by psoriasis area and severity index (PASI) as well. RESULTS: Serum level of EGF in patients was 175.35 +/- 179.86 ng/L before treatment, markedly higher than that in healthy subjects (72.05 +/- 63.01 ng/L), showing significant difference between them (t = - 2.888, P = 0.006); it reduced to 121.67 +/- 94.74 ng/L after treatment, significantly different to that before treatment (t = 2.155, P = 0.04), but still higher than that in the control (t = - 2.146, P = 0.037). Average PASI was 9.65 +/- 5.82 before treatment and 5.74 +/- 4.69 after treatment, displaying a significant reduction (t = 7.740, P < 0.01). Linear regression analysis showed no apparent correlation between serum EGF level and PASI (r = 0.030, P = 0.872; r = 0.050, P = 0.793). CONCLUSION: Serum level of EGF might be an important factor related to the progress of psoriasis. Chinese herbal medicine for clearing heat, cooling blood and removing toxic substances can lessen the severity of psoriasis, its action in reducing serum EGF is possibly one of the mechanisms for these kinds of herbs in treating psoriasis.
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