Objective To improve the clinical understanding of the disease by retrospective analysing 55 cases of patients with panniculitis. Methods The hospitalized patients with panniculitis were collected from December 2011 to October 2018 in the Shanxi Dayi Hospital Affiliated to Shanxi Medical University. The demographics, clinical manifestations, laboratory examinations and treatments were analyzed and summarized, rate or composition ratio were applied for statistical description of the counting data. Results The proportion of males and females in the 55 patients was 1:2.23, with an average of (53±15) years (18-82 years). A total of 52 cases of nodular panniculitis (including 14 cases of mesenteric involvement) and 3 cases of special type of panniculitis were collected. Patients with nodular panniculitis were often presented with subcutaneous nodules or masses. According to the affected parts, they cowld be divided into skin sub-type and systemic sub-type. Among them, 32 cases were skin sub-type and 20 cases are systemic sub-type. The most frequently involved organs were mesenteric and kidney involvement. Nine of 55 patients was complicated with tumor. Patients with mesenteric panniculitis mainly presented with abdominal pain and bloating, which were mainly diagnosed according to CT findings. Patients with systemic panniculitis could be significantly relieved after treatment with coricosteroids and immunosuppressive agents. Conclusion Panniculitis is an inflammatory disease of unknown etiology. It is frequent in middle-aged and elderly people. It presents with various clinical manifestations and lacks specificity. The diagnosis is mainly based on pathological results. It is easy to be complicated with tumors. When subcutaneous nodules are found, pathological examination should be performed in order to avoid misdiagnosis.

Objective To evaluate the value of 2012 classification criteria for early rheumatoid arthritis (ERA),2010 American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) classification criteria,and 1987 ACR classification criteria in the diagnosis of early rheumatoid arthritis (RA).Methods Patients who had at least one swollen and tender joint with disease duration no more than 2 years,and age more than 16 years were enrolled.The patients were diagnosed as RA or other non-RA by 2 experienced rheumatologists.The clinical and laboratory parameters were recorded.The sensitivity and specificity of three RA classification criteria were compared by McNemar test,The areas under the receiver operating characteristic curve (ROC) curve (AUC) of each RA classification criteria were analyzed using MedCalc software.Results Atotal of 310 patients were enrolled in this study,including 182ERA and 128 non-RA.The sensitivity(88.5％) of ERA criteria was much higher than that of the 1987 ACR criteria (45.6％,x2=75.013,P＜0.05),and not significantly different with the 2010 ACR/EULAR criteria (91.8％,X2=1.042,P＞0.05).The specificity of ERA criteria (91.4％) of 2010 ACR/EULAR criteria (87.5％,x2=1.8,P＞0.05) was similar to that of the 1987 ACR criteria (96.1％,x2=3.1,P＞0.05).The AUC of ERA criteria was 0.962 [95％CI(0.934,0.980)],which was slightly better than that of the 2010 ACR/EULAR criteria 0.959 [95％CI(0.931,0.978)],Z=0.380,P=0.7038,and much higher than that of the 1987 ACR criteria 0.885 [95％CI (0.845,0.919)],Z=4.517,P＜0.01.Conclusion Overall evaluation,the diagnostic value of ERA criteria is better than 1987 ACR and 2010 ACR/EULAR criteria in early rheumatoid arthritis.Compared to 2010 ACR/EULAR classification criteria,ERA criteria is more simple and practical.

Objective To investigate the clinical features of Andersson lesion (AL) in ankylosing spondylitis (AS).Methods A comprehensive search was performed for all scientific literatures using search string "ankylosing spondylitis Andersson lesion vertebral lesion destructive lesion spondylodiscitis" "discitis" "pseudarthrosis" or "stress fracture" published between January 1937 and December 2016.Literature screening and data extraction were done according to the inclusion and exclusion criteria.Statistical Product and Service Solutions (SPSS) 23.0 software was used for statistical analysis.Data was analyzed by one sample t test and paired sample t test.Results Fifteen papers were selected after literature review (57) and 47 cases met the selection criteria fimally.Male patients was 38(81％) and female was 9(19％),and their average age was (45±12) years old.The disease duration was defined as the time range from the definite diagnosis of AS to the onset of AL and it was between 0.5 to 41years with the average of (11±7) years.Twenty-four cases (51％) had a clear history of trau.ma.Twenty cases (43％) performed kyphosis in which thoracolumbar segments (15 cases)was the most commonly involvedand the difference was statistically significant (P＜0.05).Four cases (9％) were misdiagnosed as tuberculosis.There was no statistically different for preoperative and postoperative ESR and CRP (P＞0.05).The above cases were confirmed by imageology (42 cases) and magnetic resonance imaging (MRI) was the best method.Forrty cases (85％) were treated by surgery and the other 7 cases (15％) were treated with immunosuppressive therapy.Conclusion AS patients with AL are always associated with trauma and diagnosed by means of MRI.Orthopedic effect and good fusion can be obtained by pedicle and intervertebral disc osteotomy which is an effective method for the treatment of AS with AL.

Objective To assess the correlation between sleep quality and disease activity in rheumatoid arthritis (RA) patients by comparing the sleep quality of RA patients with healthy control group.Methods One hundred and sixty cases of RA patients who were hospitalized in the Second Hospital of Shanxi Medical University from January 2015 to June 2017 were included into this study,and 90 age and gender matched healthy people were selectedas control group.Age,sex,therapeutic drugs,Pittsburgh Sleep Quality Index (PSQI),serum erythrocyte sedimentation rate (ESR),C-reactive protein (CRP),the 28-joint Disease Activity Score (DAS28),Visual Analogue Score (VAS) and Beck Depression Inventory second edition (BDI-Ⅱ) were detected and compared.According to the DAS28 scores,the relationship between the sleep quality of RA patients and the degree of disease activity was analyzed.Results One hundred and nine cases (68.1％) with sleep disorders in the RA group,which was higher than that in the healthy control group,in which 17 cases (18.9％) had sleep disorder.The total scores of the PSQI in the RA group were higher than those in the healthy control group,which were (7.2±3.2) scores vs (3.1±2.8) scores (t=10.636,P＜0.05) respectively.In the RA group,the average age of patients with sleep disorders (PSQI＞5) (56±12) years was higher than that of patients without sleep disorders (48±9) years (PSQI≤5).The VAS and BDI-Ⅱ score in RA patients with sleep distur-bance were higher than those with non-sleep disturbance,which were (5.8±2.2) scores vs (25.1 ±9.1) scores vs (2.1 ±2.1) scores vs (14.2±6.6) scores (P＜0.05) respectively.According to the results of Pearson correlation an-alysis,DAS28 was significantly positively correlated with BDI-Ⅱ (r=0.382,P=0.001),PSQI wassignificantly positively-correlated with BDI-Ⅱ (r=0.312,P=0.001).Subjective sleep quality,sleep time,sleep efficiency,sleep disorder,daytime dysfunction and the PSQI total score increased with the increase of RA activity.Conclusion The incidence of sleep disturbance in RA patients is higher than that in the normal population.The incidence of sleep disturbance,increases significantly accompanied by high disease activities in RA patients.

Objective To study the expression of peripheral blood lymphocyte subsets in psoriatic arthritis (PsA) patients and the short-term efficacy of low doses of interleukin-2 (IL-2). Methods Ninety-five patients with PsA were enrolled as study subjects and 106 healthy people as control group. On the basis of conventional treatment, a total of 22 PsA patients were randomly selected and treated with low dose IL-2 (5 ×105 U/d, continuously used for 5 days, IH), and the disease condition and lymphocyte changes were observed. Flow cytometry was used to detect the absolute count of T subsets dominated by regulatory T cell(Treg) and T helper cell 17(Th17). Wilcoxon rank sum test, χ2 test and Spearman correlation analysis were used for statistical analysis. Results The absolute number of Th17 cells of PsA patients [7.2 (4.0, 12.8) cells/μl] was higher than that of the control group [5.9(4.0, 8.6) cells/μl] (Z=-1.997, P=0.046), the number of Treg cells [25 (17, 36) cells/μl] decreased compared with the control group [30 (23, 40) cells/μl] (Z=-2.957, Z=0.003), T/Treg [50 (36), 76)], B/Treg [7.6 (5.4, 11.5)], CD4+T/Treg [27 (21, 42)], CD8+T/Treg [20 (12, 30)], Th17/Treg [0.34(0.13, 0.51)], Th1/Treg [4.4(2.3, 7.2)], Th2/Treg [0.34(0.20, 0.53)], compared with control group T/Treg [40 (32, 54)], B/Treg [6.5 (4.2, 8.1)], CD4+T/Treg [20 (17, 25)], CD8+T/Treg [16 (11, 24)], Th17/Treg [0.19 (0.13, 0.31)], Th1/Treg [3.5 (1.8, 5.8)], Th2/Treg [0.24 (0.15, 0.39)] were significantly increased (Z=-3.365, -3.217,-5.285, -2.097, -1.69, -1.482, -2.304, P<0.05). Treg cells were negatively correlated with disease activity indexes TJC (r=-0.213, P=0.038), VAS (r=-0.299, P=0.003), PHGA (r=-0.287, P=0.005), DLQI (r=-0.208, P=0.043). Th17 cells increased from [6.3 (2.3, 11.5) cells/μl] to [11 (7, 20) cells/μl, Z=-2.808, P=0.005] after low-dose IL-2 treatment, Treg cells increased from [27 (15, 30) cells/μl] to [71 (37, 98) cells/μl, Z=-3.945, P<0.01]. Because the growth rate of Treg was much higher than Th17, Th17/Treg [before IL-2 treatment: 0.26 (0.11, 0.44), after IL-2 treatment: 0.14 (0.1, 0.35)] returned back to the normal range. After the treatment with IL-2, the patient's activity indicators were significantly improved, and there were no reversible adverse reactions. Conclusion The reduction of Treg cells may be involved in the occurrence and devel-opment of PsA. Low-dose IL-2 treatment can effectively promote the proliferation of Treg cells and the recovery of Th17/Treg balance, which is conducive to the improvement of the condition and good safety.

Objective:To study the expression of receptor activator of nuclear factor-κB ligand (RANKL) induced by interleukin-6 (IL-6) in fibroblast-like synoviocytes of rheumatoid arthritis (RA-FLS) and its signal pathway, to clarify the synergistic mechanism of methotrexate (MTX) combined with cyclophosphamide (CTX) in inhibiting RA bone erosion.Methods:The synovial tissues of 6 patients with active RA were collected, and RA-FLS were cultured in vitro. IL-6/sIL-6R and drug intervention were given successively. All RA-FLS were divided into five groups, including blank control group, IL-6/sIL-6R group, CTX group, MTX group and MTX+CTX group. The expression levels of RANKL and signal pathway protein in RA-FLS were detected by real-time quantitative polymerase chain reaction (qPCR), Western blotting and cell-based enzyme-linked im-munosorbent assay (ELISA). Single factor analysis of variance was used to compare in the comparison of multiple groups, LSD- t test or Dunnett's T3 test was used in the comparison of two groups, and 2×2 factorial analysis of var-iance was used in the interaction of two drugs. Results:① There were statistically significant differences in the mRNA and protein levels of RANKL in each group ( F=26.246, P<0.01; F=4.565, P=0.023). The highest level of RANKL mRNA (2.14±0.40) and protein (2.33±0.39) was found in IL-6/sIL-6R group, and the lowest level of RANKL mRNA (0.10±0.08) and protein (0.75±0.21) in MTX+CTX group. ② The difference of phosphorylated signal transducer and activator of transcription 3 (p-STAT3) level in each group was statistically significant ( F=18.151, P<0.01). The level of p-STAT3 (0.328±0.073) was the highest in IL-6/sIL-6R group and the lowest (0.178±0.022) in MTX+CTX group. There was no significant difference in STAT3 in each group ( F=3.173, P=0.051). ③ MTX combined with CTX had interaction on the expression of RANKL mRNA and protein ( F=33.932, P<0.01; F=16.265, P<0.01), and had interaction on the expression of p-STAT3 ( F=16.477, P=0.01), but had no interaction on the expression of STAT3 ( F=0.471, P=0.500). Conclusion:IL-6 can up-regulate the expression of RANKL in RA-FLS through JAK2/STAT3 signal pathway. MTX combined with CTX can down-regulate the expression of RANKL by inhibiting the phosphorylation of STAT3, and this combination is synergistic.

Objective:To explore the effect and mechanism of different concentrations of metformin on bleomycin (BLM)-induced systemic sclerosis (SSc) mice model.Methods:C57BL/6 mice were divided into the normal group, the model group, the high, the medium and the low metformin (MET) treatment groups randomly. All mice were sacrificed after BLM and metformin treatment for 4 weeks. Local skin was exminedby histopathological staining method to measure the thickness of dermis and collagen, and immunohistochemistry and real-time fluorescence quantitative polymerase chain reaction (RT-qPCR) were used to detect the protein and mRNA levels of Interleukin (IL)-17, forkhead box P3 (Foxp3) and α-smooth muscle actin (α-SMA). Flow cytometry was used to detect the percentage of effector T cell (Teff) and regulatory cells (Treg) in splenic mononuclear cells. The data such as dermal collagen thickness, α-SMA, IL-17, Foxp3, Teff and Treg levels were statistically analyzed by one-way analysis of variance. The data such as dermal collagen thickness, α-SMA, IL-17, Foxp3, Teff and Treg levels were analyzed by one-way analysis of variance, and least significant difference (LSD)- t or Kruskal-Wallis test was used for comparison between groups. Results:Compared with the normal group, remarkable fibrotic lesions appeared in the skin of mice in the model group, and the levels of T-helper cells (Th)1, Th2, Th17, and T follicular helper cells (Tfh) cells were increased, accompanied by a significant decrease in the level of Treg cells. After high-dose metformin treatment, the dermal thickness [(131±25) μm], collagen thickness [(119±18) μm], and α-SMA [(3.0±0.5)/HPH] were significantly reduced( F=14.390, P<0.01; F=40.245, P<0.01; F=44.626, P<0.01). Th1[(27.00±6.68)%], Th17[(0.56±0.20)%], Tfh[(6.4±1.6)%] cells ware significantlyreduced ( F=32.390, P<0.01; F=16.083, P<0.01; F=16.546, P<0.01), and Treg[(11.23±1.52)%] cells were significantly increased ( F=10.171, P<0.01). Conclusion:Metformin can effectively reverse the local skin changesin BLM-induced SSc mouse model, and show immune regulation and anti-fibrosis effects by restoring the Teff/Treg balance.

Objective To compare the difference of peripheral blood adiponectin and CD4+T cell subsets between patients with a-cute gouty arthritis and healthy controls,to explore the correlation between adiponectin and serum uric acid,disease activity,CT4+T cell subsets and some cytokines in patients with gout.Methods The clinical data(including general data,neutrophils,erythrocyte sedimen-tation rate,C-reactive protein,blood uric acid,CT4+T cell subsets and some cytokines)of acute gout group(n=90)and healthy con-trol group(n=72)were collected.The level of adiponectin in peripheral blood of two groups were detected,and the differences of adi-ponectin and CD4+T cell subsets between the two groups were compared;the correlation between adiponectin and clinical data was ana-lyzed.Results The levels of serum adiponectin in the acute gout group were significantly lower than those in the healthy control group(P＜0.001),and the levels of Th2,Thl7,Th17/Treg were significantly higher than those in the healthy control group(P＜0.05),while the levels of Treg and Th1/Th2 were significantly lower than those in the healthy control group(P＜0.05).In the acute gout group,adiponectin was negatively correlated with neutrophil,erythrocyte sedimentation rate and C-reactive proten(r=-0.244,P＜0.05;r=-0.311,P＜0.05;r=-0.506,P＜0.001),there was no correlation with serum uric acid.In acute gout group,adiponectin was posi-tively correlated with Th1 and Th1/Th2(r=0.252,P＜0.05;r=0.218,P＜0.05).In acute gout group,adiponectin in peripheral blood was positively correlated with interleukin-2(IL-2),interleukin-4(IL-4)and interleukin-10(IL-10)(r=0.323,P＜0.05;r=0.377,P＜0.05;r=0.359,P＜0.05).There was a negative correlation between interleukin-6(IL-6)and tumor necrosis factor-α(TNF-α)(r=-0.265,P＜0.05;r=-0.299,P＜0.05).Multiple linear regression analysis showed that adiponectin in the acute gout group was negatively correlated with erythrocyte sedimentation rate,C-reactive protein,IL-6 and TNF-α(BESR=-12.541,P=0.003;BCRP=-8.256,P=0.024;BIL-6=-15.907,P=0.037;BTNF-α=-79.770,P=0.040),but positively correlated with Th1(BTh1=2.959,P=0.006).Conclusion The levels of adiponectin in the peripheral blood of patients with acute gouty arthritis were decreased,the levels of Th2 and Th17 were increased,and the levels of Treg were decreased.The decrease of adi-ponectin was related to the immunological disorder and inflammation in the patients with acute gouty arthritis.

Objective:To assess the changes of peripheral blood NK cells in patients with systemic lupus erythematosus (SLE) following belimumab and classic therapy.Methods:From January 2020 to March 2022, peripheral lymphocyte subsets were detected by flow cytometry in SLE patients treated with Belimumab and classic therapy. The duration of treatment was 24 weeks. A total of 40 treated SLE patients were enrolled. The lymphocyte subsets in healthy donors were used as normal control group. Paired sample t-test, rank-sum test, Spearman correlation and generalized linear mixed model were used for statistical analysis. Results:In contrast to healthy subjects, the numbers of NK cells in SLE patients before treatment were significantly decreased [276.0 (179.8, 384.0) cells/μl vs. 61.4 (43.0, 105.1) cells/μl; Z=-7.32, P<0.001], although that after treatment was higher than that before treatment [61.4 (43.0, 105.1) cells/μl vs. 107.7 (72.5, 186.5) cells/μl; Z= -3.22, P<0.001]. Generalized linear mixed model results showed that the increase in serum levels of C3 ( t= -2.94, P=0.006) and NK cells ( t=-2.25, P=0.031) were associated with a decrease of anti-dsDNA antibody titers. The cutoff value of elevated counts of NK cells after treatment was equal or more than 38.5 cells/μl with a sensitivity of 61.9% and a specificity of 81.2%. Compared with those with elevated counts of NK cells ≤38.5 cells/μl, patients with elevated counts of NK cells >38.5 cells/μl had a bigger difference anti-dsDNA antibody [49.2 (0.2, 207.2) vs. 156.2 (19.8, 260.7); Z=-1.55, P=0.120] and a bigger difference of SLEDAI-2000[4.5 (0.0, 10.0) vs. 13.0 (4.5, 18.0); Z=-2.52, P=0.012]. Conclusion:The change in the numbers of NK cells may serve as biomarkers for evaluating the therapeutic responses of SLE. Combinatory approaches employing belimumab and classic therapy may control SLE disease by increasing the number of NK cells

Objective Endothelial microparticles (EMPs) are direct indicator of endothelial cell activation or apoptosis,and may also reflect endothelial inflammation,increased coagulation,and vascular tone.The aim of this study is to investigate whether EMPs would be able to evaluate systemic involvement and be a new indicator of disease activity in Beh(c)et's disease (BD).Methods Thirty-nine consecutive BD patients (who fulfilled the modified International Study Group on BD in 1990 or International Criteria for BD in 2006) and 67 age and sex-matched healthy controls were enrolled (Including 37 patients with hypertension and 30 healthy subjects).The plasma levels of EMPs were measured by flow cytometry utilizing specific labels for endothelial MPs (CD31+ and CD42b-).The measurement data of each group were expressed as-x±s,and the comparison data betwen groups were analyzed by independent sample t test and analysis of variance,Spearman/Pearson correlation analysis,P＜0.05 was statistically significant.Results The levels of circulating EMPs (CD31 + and CI42b-) were significantly elevated in the case group compared with the healthy control group and hypertension (F=6.845,P＜0.05).Moreover,BD patients plasma EMPs were positively correlated with active BD (r=0.802,P＜0.05).Vascular involvement in BD patients was higher than in patients without vascular EMPs,t=4.707,P＜0.05.Gastrointestinal involvement in BD patients was more frequent than that in patients without Gastrointestinal involvement,t=2.673,P＜0.05.Conclusion Levels of circulating EMPs are elevatedd in BD patients and correlated with disease activity in BD.Elevated EMPs may be a potential indicator to predict disease activity of BD.The plasma level of EMPs is increased,which indicats increased risk of vascular and digestive tract involvement in BD.