To investigate whether LL-37 and human beta defensin-2 (hBD-2) is related to the patients with psoriasis seldom having skin infections and explore the role of the two peptides and CCR6 (the receptor of hBD-2) in the p...To investigate whether LL-37 and human beta defensin-2 (hBD-2) is related to the patients with psoriasis seldom having skin infections and explore the role of the two peptides and CCR6 (the receptor of hBD-2) in the pathogenesis of psoriasis, the expression levels of mRNA of LL-37, hBD-2, and CCR6 in skin lesions of patients with psoriasis vulgaris were detected by using RT-PCR. The results showed that the mRNA expression levels of the two peptides and CCR6 in psoriatic lesions all increased compared with the normal skin (P<0.001). It was suggested that up-regulated expression of LL-37 and hBD-2 might be the main reason that result in the the skin of patients with psoriasis being seldom infected, and the two peptides and CCR6 might play crucial roles in the pathogenesis of psoriasis.展开更多
目的探索肺结核患者血清甲壳质酶蛋白40(chitinase protein 40,YKL-40)、β-防御素-2(human beta defensin 2,HBD-2)水平及其对肺结核的诊断价值。方法选取2021年6月—2023年6月山东省立医院收治的86例肺结核患者为肺结核组,根据痰涂片...目的探索肺结核患者血清甲壳质酶蛋白40(chitinase protein 40,YKL-40)、β-防御素-2(human beta defensin 2,HBD-2)水平及其对肺结核的诊断价值。方法选取2021年6月—2023年6月山东省立医院收治的86例肺结核患者为肺结核组,根据痰涂片结果分为活动性肺结核组(n=50)和非活动性肺结核组(n=36),另选取86例来自我院体检中心的健康受试者作为对照组。检测所有受试者血清中YKL-40、HBD-2水平并分析肺结核患者血清中YKL-40与HBD-2的相关性;采用受试者工作特征(receiver operating characteristic,ROC)曲线分析血清中YKL-40、HBD-2水平对肺结核及活动性肺结核的诊断价值。结果肺结核组血清YKL-40、HBD-2水平高于对照组(P均<0.05);活动性肺结核组血清YKL-40、HBD-2水平高于非活动性肺结核组(P均<0.05)。肺结核患者血清中YKL-40与HBD-2的水平呈正相关(r=0.601)。YKL-40、HBD-2及2者联合诊断肺结核的曲线下面积(area under the curve,AUC)分别为0.895、0.922、0.962,2者联合诊断优于单独诊断;YKL-40、HBD-2及2者联合诊断活动性肺结核的AUC分别为0.891、0.881、0.959,2者联合诊断优于单独诊断。结论肺结核患者血清YKL-40、HBD-2水平显著升高,且随病情加重而升高,2者对肺结核及活动性肺结核的具有一定的诊断价值。展开更多
目的探讨梓醇、左旋紫草素、丹皮酚通过影响JNK信号通路发挥调控HBD-2的作用。方法用IL-1β和TNF-α各100ng/m L的混合物刺激Ha Ca T细胞18h建立HBD-2高表达及JNK信号通路活化的细胞学体外模型,配制含合适浓度的梓醇、左旋紫草素、丹皮...目的探讨梓醇、左旋紫草素、丹皮酚通过影响JNK信号通路发挥调控HBD-2的作用。方法用IL-1β和TNF-α各100ng/m L的混合物刺激Ha Ca T细胞18h建立HBD-2高表达及JNK信号通路活化的细胞学体外模型,配制含合适浓度的梓醇、左旋紫草素、丹皮酚培养基干预细胞模型,并设阴性及阳性对照。用实时荧光定量PCR法检测各组中HBD-2 m RNA的表达;用ELISA法检测培养上清中HBD-2蛋白的表达;用Western blot法检测各组中JNK蛋白的表达。结果左旋紫草素、丹皮酚和JNK抑制剂(阳性对照药物)可以明显下调细胞学体外模型中HBD-2基因及蛋白的表达(P<0.05),左旋紫草素与JNK抑制剂相当(P>0.05),丹皮酚弱于JNK抑制剂(P<0.05)。梓醇则明显上调细胞学体外模型中HBD-2基因及蛋白的表达(P<0.05)。左旋紫草素、丹皮酚和JNK抑制剂可以明显下调P-JNK2蛋白的相对含量,梓醇对P-JNK2蛋白无抑制作用,反而上调其表达。结论紫草、丹皮可能通过抑制JNK2MAPK信号通路的活化,下调HBD-2的表达,从而发挥其治疗银屑病的作用。地黄治疗银屑病的机制尚需从其他方面继续探讨。展开更多
文摘To investigate whether LL-37 and human beta defensin-2 (hBD-2) is related to the patients with psoriasis seldom having skin infections and explore the role of the two peptides and CCR6 (the receptor of hBD-2) in the pathogenesis of psoriasis, the expression levels of mRNA of LL-37, hBD-2, and CCR6 in skin lesions of patients with psoriasis vulgaris were detected by using RT-PCR. The results showed that the mRNA expression levels of the two peptides and CCR6 in psoriatic lesions all increased compared with the normal skin (P<0.001). It was suggested that up-regulated expression of LL-37 and hBD-2 might be the main reason that result in the the skin of patients with psoriasis being seldom infected, and the two peptides and CCR6 might play crucial roles in the pathogenesis of psoriasis.
文摘目的探索肺结核患者血清甲壳质酶蛋白40(chitinase protein 40,YKL-40)、β-防御素-2(human beta defensin 2,HBD-2)水平及其对肺结核的诊断价值。方法选取2021年6月—2023年6月山东省立医院收治的86例肺结核患者为肺结核组,根据痰涂片结果分为活动性肺结核组(n=50)和非活动性肺结核组(n=36),另选取86例来自我院体检中心的健康受试者作为对照组。检测所有受试者血清中YKL-40、HBD-2水平并分析肺结核患者血清中YKL-40与HBD-2的相关性;采用受试者工作特征(receiver operating characteristic,ROC)曲线分析血清中YKL-40、HBD-2水平对肺结核及活动性肺结核的诊断价值。结果肺结核组血清YKL-40、HBD-2水平高于对照组(P均<0.05);活动性肺结核组血清YKL-40、HBD-2水平高于非活动性肺结核组(P均<0.05)。肺结核患者血清中YKL-40与HBD-2的水平呈正相关(r=0.601)。YKL-40、HBD-2及2者联合诊断肺结核的曲线下面积(area under the curve,AUC)分别为0.895、0.922、0.962,2者联合诊断优于单独诊断;YKL-40、HBD-2及2者联合诊断活动性肺结核的AUC分别为0.891、0.881、0.959,2者联合诊断优于单独诊断。结论肺结核患者血清YKL-40、HBD-2水平显著升高,且随病情加重而升高,2者对肺结核及活动性肺结核的具有一定的诊断价值。
文摘目的探讨梓醇、左旋紫草素、丹皮酚通过影响JNK信号通路发挥调控HBD-2的作用。方法用IL-1β和TNF-α各100ng/m L的混合物刺激Ha Ca T细胞18h建立HBD-2高表达及JNK信号通路活化的细胞学体外模型,配制含合适浓度的梓醇、左旋紫草素、丹皮酚培养基干预细胞模型,并设阴性及阳性对照。用实时荧光定量PCR法检测各组中HBD-2 m RNA的表达;用ELISA法检测培养上清中HBD-2蛋白的表达;用Western blot法检测各组中JNK蛋白的表达。结果左旋紫草素、丹皮酚和JNK抑制剂(阳性对照药物)可以明显下调细胞学体外模型中HBD-2基因及蛋白的表达(P<0.05),左旋紫草素与JNK抑制剂相当(P>0.05),丹皮酚弱于JNK抑制剂(P<0.05)。梓醇则明显上调细胞学体外模型中HBD-2基因及蛋白的表达(P<0.05)。左旋紫草素、丹皮酚和JNK抑制剂可以明显下调P-JNK2蛋白的相对含量,梓醇对P-JNK2蛋白无抑制作用,反而上调其表达。结论紫草、丹皮可能通过抑制JNK2MAPK信号通路的活化,下调HBD-2的表达,从而发挥其治疗银屑病的作用。地黄治疗银屑病的机制尚需从其他方面继续探讨。
