寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

寻常性银屑病患者外周血单一核细胞IFN-γ受体和TNF-α受体mRNA表达的研究

Objective To investigate the mRNA expressions of IFN-gamma receptor and TNF-alpha receptor in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris and their role in the pathogenesis of psoriasis. Methods Fifty patients with psoriasis vulgaris (37 cases of active psoriasis and 13 cases of stable psoriasis) and 24 healthy human controls were included in this study. PBMCs were isolated from blood samples obtained from all patients and controls. The mRNA expressions of IFN-gamma receptor and TNF-aipha receptor in PBMCs were detected by RT-PCR. The disease severity in patients was evaluated by psoriasis area and severity index (PASI). Results The mRNA expressions of IFN-gamma receptor and TNF-alpha receptor were observed in the PBMCs of all subjects. The mRNA expression levels of IFN-gamma receptor were 0.72 ± 0.17 in healthy controls, 1.11 ± 0.55 in all patients with psoriasis, 1.13 ±0.57 in patients with active psoriasis and 1.03 ± 0.52 in patients with stable psoriasis, respectively. A signifi-cant increase was observed in the expression levels of IFN-gamma receptor mRNA in all psoriatic patients and in patients with active psoriasis compared with those in healthy controls (both P < 0.05), but there was no significant difference between the healthy controls and patients with stable psoriasis (P ＞ 0.05). The expres-sion levels of TNF-alpha receptor mRNA were 2.05 ± 1.34 in healthy controls, 2.70 ± 3.80 in all psoriatic patients, 2.90 ± 4.40 in patients with active psoriasis, 2.14 ± 1.05 in patients with stable psoriasis, respectively;there was no significant difference between psoriatic patients and healthy controls (P ＞ 0.05). However, no correlation was found between the mRNA expression of IFN-gamma receptor, that of TNF-alpha receptor,and disease severity in psoriatic patients. Conclusions The mRNA expression of IFN-gamma receptor in PBMCs is up-regulated in patients with psoriasis vulgaris, which is unrelated to the activity of psoriasis.     

Screening of differentially expressed genes and predominant expression of β variable region of T cell receptor in peripheral T cells of psoriatic patients

Psoriasis is a skin disease featuring epithelial cell hyper-proliferation and T cell infiltration. Abnormal T cell immune responses play an important role in psoriatic pathogenesis. To screen differentially expressed genes in T cells of patients with plaque psoriasis, analyze the predominant expression of the β variable region of T cell receptors and discuss the role of T cells in the pathogenesis of psoriasis. High throughput RNA sequencing and Real-time PCR were used. Results: A total of 907 genes were differentially expressed in peripheral T cells of patients with psoriasis. Among them, 695 genes were mapped to the Gene Ontology database, 14 gene terms were significantly enriched, and 418 genes were involved in signaling pathways such as apoptosis, B cell receptor signaling and T cell receptor signaling. TRBV2, TRBV5-7, TRBV6-6/6-9, TRBV12, TRBV24 and TRBV29 were significantly up-regulated in psoriatic patients compared to healthy subjects, among which, TRBV6-6/6-9, TRBV12 and TRBV29 are predominantly expressed in psoriatic patients. Many genes were differentially expressed in T cells of psoriatic patients, especially the TRBV gene family, which were predominantly expressed in T cells and might play an important role in abnormal immune responses of T cells in psoriatic patients.     

寻常性银屑病患者外周血白介素27、白介素35及EBI3 mRNA表达的研究

目的 探讨不同病期寻常性银屑病患者外周血白介素２７（IL-27）、白介素３５（IL-35）及其共同亚基EBI3 mRNA的表达。方法 分别采集寻常性银屑病进展期（22例）、静止期（20例）、消退期（20例）患者及30例健康对照外周血,采用竞争性免疫抑制ELISA法检测血清IL-27、IL-35表达水平,用SYBR Green实时荧光定量RT-PCR方法检测外周血单一核细胞中EBI3 mRNA的表达水平。 结果 寻常性银屑病患者血清内IL-27和IL-35表达均高于健康对照组。进展期、静止期、消退期IL-27（226.72 ± 71.32 ng/L,160.80 ± 20.02 ng/L,181.93 ± 27.36 ng/L）表达与健康对照组（138.66 ± 33.93 ng/L）相比,差异均有统计学意义（P值分别 < 0.01,< 0.05,< 0.01）;进展期、消退期血清IL-27表达显著高于静止期,差异有统计学意义（P值分别 < 0.01,< 0.05）。消退期血清IL-35（355.78 ± 49.82 ng/L）表达水平显著高于进展期（309.36 ± 36.10 ng/L）、静止期（299.14 ± 31.98 ng/L）、健康对照组（292.43 ± 36.26 ng/L）,差异均有统计学意义（P值分别 < 0.01,< 0.01,< 0.01）,进展期、静止期与健康对照组间比较,差异无统计学意义。外周血单一核细胞EBI3 mRNA在寻常性银屑病患者进展期、静止期、消退期表达量较健康对照组分别高20.15、16.17、19.74倍。 结论 IL-27、IL-35、EBI3作为抗炎因子可能参与寻常性银屑病发病。     

窄谱中波紫外线对寻常性银屑病患者外周血T细胞CCR6表达的影响

目的评价窄谱中波紫外线(NB-UVB)对寻常性银屑病患者外周血T细胞趋化因子受体-6(CCR6)表达水平的影响。方法采用流式细胞仪检测24例寻常性银屑病患者在NB-UVB治疗前、后外周血T细胞CCR6的表达水平,并与24名健康人正常对照组进行比较。结果治疗前寻常性银屑病患者和正常对照组外周血T细胞CCR6表达率为(42.10±11.08)%和(11.03±1.01)%,差异有统计学意义(P<0.05)。治疗12周后,银屑病患者外周血T细胞CCR6表达为(40.05±4.52)%,与治疗前比较,差异无统计学意义(P>0.05)。结论寻常性银屑病患者外周血PBMC中T细胞CCR6的表达率明显高于正常人群,这可能与银屑病的发病机制密切相关。但其不随病情而变化,故不作为银屑病病情变化的参考指标。     

银屑病患者外周血白细胞mCD14、TLR4和核因子-κB的表达

目的 探讨银屑病患者外周血白细胞mCD14、TLR4和NF-кB表达意义。方法 采用流式细胞仪检测银屑病患者32例和正常人29例外周血白细胞mCD14、TLR4和NF-кB的表达。结果 32例银屑病组外周血白细胞表面mCD14表达5.454 ± 2.78，对照组3.937 ± 1.964，差异有统计学意义（P < 0.05）。TLR4表达，银屑病组17.641 ± 18.120，对照组7.527 ± 8.574，差异有统计学意义（P < 0.01）。银屑病组外周血总白细胞活化NF-кB的表达为63.538 ± 8.650，对照组62.236 ± 6.72，差异无统计学意义（P > 0.05）。结论 银屑病患者中存在mCD14、TLR4表达异常，提示内毒素信号传导通路的异常激活也是感染诱发银屑病的病因之一。     

早幼粒细胞白血病基因在寻常性银屑病患者外周血淋巴细胞中表达的研究

目的 检测寻常性银屑病患者外周血淋巴细胞中早幼粒细胞白血病（PML）基因的表达,以探索PML基因与银屑病之间的相互关系。方法 收集年龄18 ~ 65岁、未经系统治疗的寻常性银屑病患者50例,健康人对照45例。分离外周血淋巴细胞,使用RNAprep pure 血液总RNA提取试剂盒提取淋巴细胞RNA,用实时荧光定量逆转录聚合酶链反应检测外周血淋巴细胞PML基因mRNA的表达;流式细胞仪检测30例银屑病患者和25例健康人对照外周血淋巴细胞PML蛋白荧光强度值。分别用独立样本t检验对检测结果进行统计分析。结果 50例银屑病患者和45例健康人对照外周血淋巴细胞PML mRNA相对定量（RQ）值分别为14.98 ± 3.64和5.50 ± 1.10,银屑病患者组显著高于健康人对照组（两组比较,t = 16.79,P ＜ 0.05）。30例银屑病患者和25例健康人对照外周血淋巴细胞PML蛋白荧光强度值分别为3.13 ± 0.27和2.43 ± 0.21,银屑病患者组亦显著高于健康人对照组（两组比较,t = 6.93,P ＜ 0.05）。结论 PML基因mRNA及蛋白在银屑病患者外周血淋巴细胞中高表达,提示PML基因可能在银屑病的发病中起一定作用。     

维A酸受体mRNA在寻常性银屑病外周血单一核细胞中表达水平的研究

目的　探讨寻常性银屑病患者外周血单一核细胞中维A酸受体 (RARα、RARγ、RXRα)mRNA的表达情况。方法　用RT PCR法对比研究了 2 0例寻常性银屑病患者和 10例正常对照组外周血单一核细胞中维A酸受体mRNA表达情况。结果　寻常性银屑病患者外周血单一核细胞中的维A酸受体mRNA的表达水平与正常对照组无差异。结论　用维A酸治疗寻常性银屑病过程中 ,免疫细胞是否为维A酸的作用靶细胞还不能确定。     

促炎细胞因子对寻常性银屑病患者外周血淋巴细胞表达DARC的影响

目的研究促炎性细胞因子对寻常性银屑病患者外周血淋巴细胞表达达菲抗原趋化因子受体(Duffy antigen/receptor for chem okines,DARC)的影响,探讨DARC在银屑病发病机制中的作用。方法分离、纯化寻常性银屑病患者外周血淋巴细胞,用促炎性细胞因子IL-1β、IL-6或TNF-α刺激,应用FACS技术和RT-PCR方法检测寻常性银屑病患者外周血淋巴细胞DARC蛋白和mRNA表达。结果寻常性银屑病患者外周血淋巴细胞在受到促炎性细胞因子IL-1β、IL-6或TNF-α刺激后,细胞表面DARC蛋白的表达明显降低(P<0.01),细胞内DARC mRNA表达增加。其中以进行期寻常性银屑病患者外周血淋巴细胞DARC表达的改变更为明显。结论促炎性细胞因子能调节银屑病患者外周血淋巴细胞表面DARC蛋白和细胞内DARC mRNA的表达。     

Cytokine gene polymorphisms in Chinese patients with psoriasis

BACKGROUND: Previous studies have shown that cytokine gene polymorphisms may confer susceptibility to psoriasis. OBJECTIVES: To determine whether genetic polymorphisms of the cytokine genes might influence the development of psoriasis in Chinese patients in Taiwan. METHODS: DNA samples were obtained from 170 patients with psoriasis vulgaris (PV), 102 patients with psoriatic arthritis (PsA) and 210 control subjects. Using direct sequencing and microsatellite genotyping, we examined 28 polymorphisms in 11 cytokine genes including the interleukin (IL)-1alpha, IL-1beta, IL-1 receptor antagonist, IL-4, IL-8, IL-10, IL-12B, IL-13, tumour necrosis factor (TNF)-alpha, TNF-beta and interferon-gamma genes. Genotypes of HLA-Cw*0602, killer cell immunoglobulin-like receptor (KIR) genes and major histocompatibility complex class I chain-related gene A (MICA) were also determined in patients with PsA. RESULTS: The patients with PV were more likely to carry the +4496G allele of the IL-12B gene (59.4% vs. 49.3%, P = 0.0067, P(c) = 0.033). However, no significantly different allelic and genotypic distributions of the other analysed genes including IL-1beta, TNF-alpha, TNF-beta, KIR genes and MICA were found between the PV/PsA patients and controls. Moreover, no association was observed with disease onset, gender, peripheral arthritis or joint erosion. With regards to HLA-Cw*0602, its allele frequency was significantly increased in patients with early-onset PV (25.3% vs. 4.8%, P < 10(-7)), but not in patients with PsA. CONCLUSIONS: The IL-12B gene polymorphism conferred a risk for PV in our Chinese population, although the effect was more minor than that of HLA-Cw*0602. Cw*0602, KIR2DS1/S2 and MICA-A9 were unlikely to be risk alleles in our patients with PsA. The other analysed genetic polymorphisms of cytokine genes do not appear to be associated with susceptibility to PV and PsA in Chinese patients in Taiwan.     

CD4+CD25high regulatory T cells are markedly decreased in blood of patients with pemphigus vulgaris

BACKGROUND: It remains to be determined whether pemphigus vulgaris (PV), an autoimmune blistering disease, has a reduction and/or dysfunction of CD4(+)CD25(high) regulatory T (Treg) cells. OBJECTIVES: To evaluate the frequency and phenotypes of Treg cells in blood of patients with PV. METHODS: Peripheral blood mononuclear cells were prepared from PV patients as well as normal and disease control volunteers, and the frequency and phenotypes of Treg cells were determined by flow cytometry. CD4(+)CD25(+) and CD4(+)CD25(-) T cells isolated from peripheral blood mononuclear cells of PV patients and normal controls were subjected to real-time semiquantitative RT-PCR for the expression of Foxp3 gene. RESULTS: The proportion of Treg cells in all PV patients was severely reduced, approximately ten times less than controls. These observations were further confirmed by both diminished gene and protein expression of Foxp3 in the CD4(+)CD25(+) T cell population in PV patients. CONCLUSIONS: Numerical impairment of Treg cells may be involved in the pathogenesis of PV.     

流式细胞分析法测定外周血皮肤淋巴细胞相关抗原阳性T细胞在寻常性银屑病中的表达

目的探讨T细胞亚群和皮肤淋巴细胞相关抗原（CLA）在寻常性银屑病外周血中的表达情况。方法采用免疫荧光双标记流式细胞分析法检测不同病期的寻常性银屑病患者外周血中T细胞亚群及CLA的表达情况。结果银屑病进展期患者外周血CD4^＋T细胞降低，CD8^＋T细胞显著升高，CD4／CD8的比值降低，与静止期和正常人相比差异均有显著性。静止期患者T细胞亚群的变化与正常人之间无明显差异。进展期患者表达CLA的T细胞亚群明显高于正常人，同时对比静止期也明显增高。而静止期与正常人比较只有CLA^＋CD8^＋T细胞显著升高。结论银屑病患者存在细胞免疫功能的异常．CLA在T细胞上的表达对银屑痛的病情进展起一定作用．