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Objective:To investigate the expression and clinical significance of effector T cell (Teff), regulatory T cell (Treg) and their cytokines in patients with vitiligo.Methods:84 patients with vitiligo (38 cases in stable stage, 46 cases in advanced stage) who were admitted to the Dermatology Department of the Dezhou People's Hospital between June 2018 and June 2019 and 30 healthy people (control group) were enrolled in the study. The levels of Teff subsets and Treg cells in peripheral blood were detected by flow cytometry. The levels of Teff subsets and Treg cells-associated cytokines were detected by enzyme-linked immunosorbent assay (ELISA). The relationship between Teff subsets and Treg cells levels in peripheral blood, relationship between Teff subgroups, Treg cells-associated cytokines and course of vitiligo, skin lesion area were analyzed.Results:The levels of T helper cell (Th)17 and Th22 in peripheral blood of vitiligo group were significantly higher than those of control group, while levels of Treg cells were significantly lower than control group ( P<0.05). Compared with the stable vitiligo group, the levels of Th17 and Th22 in peripheral blood were higher and levels of Treg cells were lower in the advanced vitiligo group ( P<0.05). Treg cell level was negatively correlated with Th17 cell level ( r=-0.303, P=0.001), and negatively correlated with Th22 cell level ( r=-0.200, P=0.033). The levels of serum interleukin (IL)-17 and IL-22 in vitiligo group were significantly higher than those in control group, while the level of transforming growth factor-β (TGF-β) was significantly lower than that in control group ( P<0.05). Compared with the stable vitiligo group, levels of serum IL-17 and IL-22 were higher and level of TGF-β was lower in the advanced vitiligo group ( P<0.05). Correlation analysis showed that levels of IL-17 and IL-22 were positively correlated with skin lesion area ( r=0.361, 0.288, P<0.05), and level of TGF-β was negatively correlated with skin lesion area ( r=-0.312, P<0.05). Conclusions:Teff/Treg cells are unbalanced in patients with vitiligo, showing obvious shift to Teff subsets. The progression of vitiligo may be related to Teff subsets and Treg cells-associated cytokines.
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Objective To evaluate the therapeutic effect of narrow band-ultraviolet B (NB-UVB) alone or in combination with interferon-alpha-2b (INF-alpha-2b) for mycosis fungoides (MF),and to assess the correlation between the therapeutic effect and peripheral blood regulatory T (Treg)/T helper type 17 (Th 17) cells.Methods Thirty-three patients with stage ⅠA to ⅡA MF were randomly divided into two groups:NB-UVB group (n =15) receiving NB-UVB radiation alone,combined group (n =18) treated with NB-UVB radiation and intramuscular injection of INF-alpha-2b.Ten healthy volunteers were selected as the control group.Peripheral blood samples were collected before and 9 months after the start of treatment.Flow cytometry was performed to determine the percentages of Treg cells and Th17 cells.Statistical analysis was carried out by using t test,one-way analysis of variance,and Fisher's exact test.Results The average treatment duration was 9 months among these patients.Therapeutic outcomes were significantly better in the combined group than in the NB-UVB group (P =0.023).Among the 15 patients in the NB-UVB group,6 achieved complete remission,3 partial remission,6 showed no response;of the 18 patients in the combined group,12 experienced complete remission,5 partial remission,and 1 showed no response.Before the treatment,the percentages of both Treg and Th17 cells in peripheral blood were significantly higher in the NB-UVB group and combined group than in the control group (both P ＜ 0.05),but similar between the NB-UVB group and combined group (both P ＞ 0.05).After the treatment,the percentages of both Treg and Th17 cells in the NB-UVB group and combined group significantly decreased compared with those before the treatment,but were still higher than those in the control group (both P ＜ 0.05).Additionally,the degree of decrease in the percentages of Treg and Th17 cells was significantly greater in the combined group than in the NB-UVB group (both P＜ 0.05).The seven patients with no response also showed a significant decrease in the percentage of Treg cells (P ＜ 0.05),but no obvious changes in that of Th 17 cells (P ＞ 0.05) after the treatment.Conclusions The therapeutic effect of NB-UVB radiation combined with intramuscular INF-alpha-2b is superior to that of NB-UVB radiation alone for MF,which may be associated with the degree of decrease in peripheral blood Treg and Th 17 cells.
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Objective To investigate the changes of T helper type 17 (Thl7) cells and regulatory T (Treg) cells in different stages of mycosis fungoides.Methods Flow cytometry was performed to determine the percentage of Treg and Th17 cells in peripheral blood from 28 patients with mycosis fungoides (MF),13 patients with large plaque parapsoriasis (PP),17 patients with lichen planus (LP) and 10 healthy human controls,and immunohistochemistry to detect the expressions of forkhead box protein 3 (FOXP3) and interleukin (IL)-17 in tissue specimens from 40 patients with MF,13 with PP,17 with LP and 10 healthy human controls.Statistical analysis was carried out by one-way analysis of variance and Pearson correlation analysis.Results As far as the percentage of Treg cells in peripheral blood was concerned,MF,PP and LP patients were significantly higher than the healthy controls (8.09％ ± 1.68％,6.53％ ± 1.67％ and 2.84 ％ ± 1.16％ vs.1.01％ ± 0.35,all P＜ 0.05),PP patients were higher than LP patients and healthy controls (both P ＜ 0.05),and LP patients were higher than healthy controls (P ＜ 0.05).The percentage of Th17 cells in peripheral blood was significantly increased in MF patients compared with PP patients,LP patients and healthy controls (3.22％ ± 0.82％ vs.2.46％ ± 0.79％,1.38％ ± 0.47％ and 0.59％ ± 0.30％,all P ＜ 0.05).Elevated expression rate of FOXP3 was observed in MF,PP and LP lesions as compared with normal skin (14.94％ ± 4.46％,11.95％ ± 4.72％,6.32％ ± 2.81％ vs.3.43％ ± 1.79％,all P ＜ 0.05),and in MF and PP lesions compared with LP lesions (both P ＜ 0.05),but no significant difference was observed between MF and PP lesions (P ＞ 0.05).There was a significant increase in the expression rate of IL-17 in MF lesions compared with PP lesions,LP lesions and normal skin (15.89％ ± 4.27％ vs.12.02％ ± 3.34％,4.84％ ± 1.93％ and 2.62％ ± 0.89％,all P ＜ 0.05).The Th17/Treg ratio in peripheral blood was significantly lower in MF and PP patients than in LP patients and healthy controls (0.41 ± 0.11 and 0.39 ± 0.12 vs.0.50 ± 0.06 and 0.57 ± 0.19,all P ＜ 0.05).A positive correlation was observed between the proportion of Thl7 cells and Treg cells (r =0.423,P ＜ 0.05) in patients with early-stage MF,but not in those with tumor-stage MF.The proportion of Th17 cells decreased,but that of Treg cells continuously increased in patients with tumor-stage MF.However,no significant difference was noted in the proportion of Thl7 cells or Treg cells among patients with different stages of MF.Conclusion The imbalance between Treg and Th17 cells may be involved in the occurrence and development of MF.
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ObjectiveTo detect five periodontal pathogenic bacteria in coronary atherosclerotic plaques.MethodsAtherosclerotic plaque specimens were obtained from 101 patients who scheduled for coronary artery bypass graft surgery.The bacteria DNA was obtained from coronary atherosclerotic plaques using the chelex-100 method.The extracted DNA were examined by PCR.ResultsWithin the 101 pieces of atherosclerotic plaque samples Porphyromonas gingivalis( Pg,31％ ),Tannerella forsythensis(Tf,42％ ),Prevotella intermedia( Pi,26％ ),Fusobacterium nucleatum( Fn,21％ ),Actinobacillus actinomycetemcomitans( Aa,23％ ).PCR products were sequenced and were compared with GenBank sequences,the homology was 99％-100％.ConclusionPeriodontitis might affect the development of atherosclerosis and there is a correlation between coronary heart disease and chronic periodontitis.
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Cytokeratins can maintain the morphous and function of normal cells. Clinically, cytokera-tins are used to diagnose several tumors as tumor markers. Recently, numerous studies indicate that the abnor-mal expression, mutation in the site of phosphorylation and hyperphosphorylation have relationship with the mechnism of tumorigenesis. Reseach of the relationship is important for the diagnosis, therapy and prognosis of tumor.