Expression and Clinical Significance of Serum sFas/sFasL in Patients with Secondary Hemophagocytic Lymphohistiocytosis / 中国实验血液学杂志

OBJECTIVE@#To investigate the expression and clinical significance of soluble Fas (sFas) and sFasL in patients with secondary hemophagocytic lymphohistiocytosis (sHLH).@*METHODS@#From September 2015 to December 2020, 86 sHLH patients who met the HLH2004 diagnostic criteria were collected. They were divided into 55 cases in the MAHLH group and 31 cases in the NonMAHLH group according to the etiology. Thirty healthy persons were chosen as the normal control group, and 20 patients with systemic lupus erythematosus (SLE) were chosen as the disease control group. The expression levels of sFas and sFasL in the serum of patients with each group were detected by ELISA, and the clinical data were collected for statistical analysis. The significance of sFas and sFasL in sHLH was analyzed by ROC curve.@*RESULTS@#Serum levels of sFas and sFasL in patients with newly diagnosed sHLH were significantly higher than those in disease control group and normal control group (P<0.01). The levels of sFas and sFasL in MAHLH group were significantly higher than those in nonMAHLH (infection related HLH and autoimmune disease related HLH) group (P<0.01). The serum levels of sFas and sFasL in 17 newly treated patients with sHLH (17/86) after treatment were significantly lower than those before treatment (P<0.01). The serum sFas level in newly diagnosed sHLH patients was positively correlated with SF(r=0.35), sCD25(r=0.79) and sFasL(r=0.73). The serum sFasL level was positively correlated with SF(r=0.39), sCD25(r=0.64) and sFas(r=0.73). Compared with the NonMAHLH group, the area under the ROC curve was 0.707 (95% CI: 0.593-0.821) (P=0.0015). The optimal critical value for diagnosing MAHLH by sFas level was 12 743 pg/ml, and the sensitivity and specificity were 70.9% and 71% respectively. Compared with the NonMAHLH group, the area under the ROC curve was 0.765(95% CI: 0.659-0.87)(P<0.01). The median OS time of sFas high expression group (≥16798.5 pg/ml) and sFasL high expression group (≥4 785 pg/ml) was significantly shorter than that of the low expression group (P<0.001).@*CONCLUSION@#Serum levels of sFas and sFasL can be used for the early diagnosis and differential diagnosis of sHLH disease, and are the factor related to the poor prognosis of sHLH.

Measurement of Serum Fas Ligand (FasL), FasL-Fas Complex and FasL-IgG Complex in Patients with Rheumatic Diseases / 대한류마티스학회지

OBJECTIVE: To quantify the soluble Fas ligand (sFasL) and to measure FasL-Fas complex and FasL-IgG complex in the sera of patients with various rheumatic diseases: systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), systemic sclerosis (SSc), and adult onset Still? disease (AOSD). METHODS: Serum samples were obtained from 37 patients with SLE, 40 with RA, 30 with SSc, 20 with AOSD, and 40 healthy controls. The serum sFasL, FasL-Fas complex, and FasL-IgG complex were measured using a sandwich enzyme-linked immunoabsorbent assay. Hospital medical records were retrospectively reviewed for clinical and laboratory characteristics in patients with SLE. Disease activity in SLE patients was assessed by the SLE Disease Activity Index (SLEDAI) score. RESULTS: In patients with SLE, serum sFasL levels (383.1+/-208.9pg/ml) were significantly higher (p<0.001) than those of healthy controls (192.0+/-84.7pg/ml). sFasL levels in patients with RA (150.8+/-30.7pg/ml, p=0.014), SSc (115.4+/-13.5pg/ml, p<0.001), and AOSD (137.5+/-12.9pg/ml, p=0.001) were significantly lower compared with healthy controls. The frequencies of positive FasL-Fas complex and FasL-IgG complex were higher in patients with SLE (56.8%, 56.8% respectively) than in healthy controls (2.5%, 0% respectively) (p<0.001). All patients with RA or AOSD were negative for FasL-Fas complex and FasL-IgG complex. No patients with SSc were positive for FasL-Fas complex. On the other hand, the positive frequency of FasL-IgG complex was greater in patients with SSc (16.7%) than in healthy controls (0%)(p=0.012). Serum levels of FasL-IgG complexes in active SLE patients (OD 0.467+/-0.050) were tended to be lower than those in inactive SLE patients (OD 0.509+/-0.055)(p=0.060). SLEDAI score was tended to be negatively correlated with the serum levels of FasL-IgG complex in patients with SLE (r=-0.308, p=0.068). CONCLUSION: These results suggest that FasL may possibly play a role in the pathogenesis of SLE.

Measurement of Serum Fas Ligand (FasL), FasL-Fas Complex and FasL-IgG Complex in Patients with Rheumatic Diseases / 대한류마티스학회지

OBJECTIVE: To quantify the soluble Fas ligand (sFasL) and to measure FasL-Fas complex and FasL-IgG complex in the sera of patients with various rheumatic diseases: systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), systemic sclerosis (SSc), and adult onset Still? disease (AOSD). METHODS: Serum samples were obtained from 37 patients with SLE, 40 with RA, 30 with SSc, 20 with AOSD, and 40 healthy controls. The serum sFasL, FasL-Fas complex, and FasL-IgG complex were measured using a sandwich enzyme-linked immunoabsorbent assay. Hospital medical records were retrospectively reviewed for clinical and laboratory characteristics in patients with SLE. Disease activity in SLE patients was assessed by the SLE Disease Activity Index (SLEDAI) score. RESULTS: In patients with SLE, serum sFasL levels (383.1+/-208.9pg/ml) were significantly higher (p<0.001) than those of healthy controls (192.0+/-84.7pg/ml). sFasL levels in patients with RA (150.8+/-30.7pg/ml, p=0.014), SSc (115.4+/-13.5pg/ml, p<0.001), and AOSD (137.5+/-12.9pg/ml, p=0.001) were significantly lower compared with healthy controls. The frequencies of positive FasL-Fas complex and FasL-IgG complex were higher in patients with SLE (56.8%, 56.8% respectively) than in healthy controls (2.5%, 0% respectively) (p<0.001). All patients with RA or AOSD were negative for FasL-Fas complex and FasL-IgG complex. No patients with SSc were positive for FasL-Fas complex. On the other hand, the positive frequency of FasL-IgG complex was greater in patients with SSc (16.7%) than in healthy controls (0%)(p=0.012). Serum levels of FasL-IgG complexes in active SLE patients (OD 0.467+/-0.050) were tended to be lower than those in inactive SLE patients (OD 0.509+/-0.055)(p=0.060). SLEDAI score was tended to be negatively correlated with the serum levels of FasL-IgG complex in patients with SLE (r=-0.308, p=0.068). CONCLUSION: These results suggest that FasL may possibly play a role in the pathogenesis of SLE.

Changes of soluble Fas and soluble Fas ligand in infertile patients with endometriosis / 重庆医科大学学报

Objective:To investigate the relationship between the level of soluble Fas antigen(sfas) and soluble Fas ligand(sFasL) and endometriosis associated infertility.Methods:The sfas and sFasL level in sera and peritoneal fluid of infertile women with endometriosis were assessed with enzyme-linked immunosorbent assay,and were compared with those of 14 infertile women resulting from chronic pelvic infectious disease and 16 fertile controls.Results:The sFasL levels(175.09?80.50pg/ml in sera and 284.50?152.38pg/ml in peritoneal fluid) were significantly higher in infertile patients with endometriosis than those of infertile controls(88.47?43.55pg/ml in sera and 17.30?9.62pg/ml in peritoneal fluid) and fertile controls(16.13?11.75pg/ml in sera and 8.84?2.31pg/ml in peritoneal fluid).Compared with the levels of sfas in infertile women resulting from pelvic infectious disease(868.75?570.48pg/ml in sera and 181.76?157.78pg/ml in peritoneal fluid) and fertile control group(822.26?129.12pg/ml in sera and 318.42?145.16pg/ml in peritoneal fluid),the values of sfas in infertile patients with endometriosis(828.60?429.65pg/ml in sera and 349.6?288.89pg/ml in peritoneal fluid) have no significant difference.Conclusion:Endometriosis-related infertility has great association with the level of sFasL,and sFasL may play a key role in the local homeostatic regulation in endometriosis and in turn result in the development of its associated infertility.