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1.
Article in Chinese | WPRIM | ID: wpr-882834

ABSTRACT

Objective:To investigate the therapeutic efficacy of Golimumab in the treatment of children with refractory juvenile dermatomyositis(JDM).Methods:The clinical data of a child diagnosed with JDM in the Department of Allergy, Immunology and Rheumatology of Guangzhou Women and Children′s Medical Center in February 2019 were collected.The treatment effect was studied and literature review was conducted.Results:The patient was a 7-year-old boy with subacute onset of the disease.The illness protracted, and main manifestations included skin rashes, limb weakness, and swallowing dysfunction.Physical examination showed heliotropic rashes, Gottron papules, positive Gower, proximal limb muscle strength grade Ⅲ-Ⅳ, distal limb muscle strength grade Ⅳ, and a choking cough when swallowing fluid food.Laboratory tests revealed alanine aminotransferase (ALT) of 36 U/L, aspartate aminotransferase (AST) of 115 U/L, alkaline phosphatase of 69 U/L, lactate dehydrogenase of 941 U/L, creatine kinase of 974 U/L, hypersensitive C-reactive protein of 26 mg/L and an erythrocyte sedimentation rate (ESR) of 52 mm/1 h. Antinuclear antibody spectra were negative.Electromyography suggested myogenic damage.Thigh magnetic resonance imaging indicated diffuse abnormal signal shadows in the subcutaneous fat, muscles and muscle spaces of both hips, thighs and knee joints.The child was diagnosed with JDM, and given standardized treatment of Methylprednisolone, intravenous immunoglobulin, Methotrexate and Hydroxychloroquine sulfate.However, after the treatment, the facial rashes were still red, proximal limb muscle strength and swallowing dysfunction did not improve, the choking cough symptom still existed, and a Cushing face appeared.Recheck results showed ALT of 24 U/L, AST of 32 U/L, alkaline phosphatase of 56 U/L, lactate dehydrogenase of 216 U/L, creatine kinase of 527 U/L, hypersensitive C-reactive protein of 8 mg/L and an ESR of 15 mm/1 h. Refractory JDM was considered.After negotiating with the patient′s family members, they agreed to treat the patient with Golimumab 50 mg by subcutaneous injection once a month.Then tapered prednisone gradually, stopped Hydroxychloroquine sulfate tablets and continued to give the patient oral Methotrexate.After two doses of Golimumab 50 mg, proximal limb muscle strength and swallowing function improved markedly.After the third subcutaneous injection of Golimumab, proximal limb muscle strength improved to grade Ⅳ-Ⅴ, and he was able to go up and down stairs, squat and stand up after squatting.Besides, dysphagia and the choking cough disappeared, and skin rashes improved.Recheck results suggested a normal ESR and creatine kinase levels.Magnetic resonance imaging of thighs indicated no muscle inflammation.Conclusions:Golimumab works well in the treatment of refractory JDM and can effectively improve muscle strength.Therefore, it can be used as a treatment option for refractory JDM.

2.
Chinese Journal of Anesthesiology ; (12): 1314-1317, 2018.
Article in Chinese | WPRIM | ID: wpr-745597

ABSTRACT

Objective To evaluate the effect of propofol on the expression of programmed death-ligand-1 (PD-L1) in pancreatic cancer cells and the relationship with NMDA/Ca2+/calmodulin-dependent protein kinase Ⅱ (CaMK Ⅱ)/hypoxia-inducible factor-1α (HIF-1α) pathway.Methods Human pancreatic cancer cells were divided into 5 groups (n=16 each) by a simple random sampling method:control group (group C),propofol group (group P),KN93 (CaMK Ⅱ inhibitor) group,MK801 (NMDA receptor antagonist) group and propofol plus rapastinel (NMDA receptor agonist) group (group PR).Cells were cultured in DMEM supplemented with 10% fetal bovine serum in group C.Cells were incubated for 8 h with 50 μmol/L propofol in group P.Cells were incubated for 8 h with 10 μmol/L KN93 in group KN93.Cells were incubated for 8 h with 500 μmol/L MK801 in group MK801.Cells were incubated for 8 h with 50 μmol/L propofol and 20 μmol/L rapastinel in group PR.After the end of treatment in each group,the cell viability was measured using CCK8 assay,the expression of PD-L1,HIF-1α,CaMK Ⅱ and phosphorylated CaMK Ⅱ (p-CaMK Ⅱ) was detected by Western blot,and intracellular calcium concentrations were determined by Fluo3/AM probe.Results Compared with group C,the cell viability was significantly decreased,the expression of PD-L1,HIF-1α and p-CaMK Ⅱ was down-regulated,and intracellular calcium concentrations were decreased in P,KN93 and MK801 groups (P<0.05),and no significant change was found in group PR (P>0.05).Compared with group P,the cell viability was significantly enhanced,the expression of PD-L1,HIF-1α and p-CaMK Ⅱ was up-regulated,and intracellular calcium concentrations were increased in group PR (P<0.05).Conclusion The mechanism by which propofol inhibits the malignant potential of pancreatic cancer cells may be related to inhibiting NMDA/CaMK Ⅱ/HIF-1α pathway and down-regulating PD-L1 expression.

3.
Article in Chinese | WPRIM | ID: wpr-696281

ABSTRACT

Objective To analyze the relationship between Notch signaling pathway and levels of lymphocytes and cytokines in children with juvenile idiopathic arthritis (JIA),and to explore its role in the pathogenesis of JIA.Methods Thirty-five pediatric patients with JIA [males 20 cases,females 15 cases;aged (6.5 ±4.0) years old,(0.83-15.00 years old)] and 15 healthy children [males 6 cases,females 9 cases;aged (5.0 ± 2.9) years old,(1.0-11.0 years old)] from November 2015 to February 2016 in Guangzhou Women and Children's Medical Center were included in the study.The JIA group were divided into the systemonset JIA(So-JIA) group (22 cases) and psoriatic JIA(p-JIA) group (13 cases,polyarthritis 7 cases and oligoarthritis 6 cases).The expressions of Notch signaling's receptor,ligand and target gene mRNA in peripheral blood monouclear cells (PBMC) from the JIA group and the control group were determined by quantitative real-time PCR.The levels of cytokines interleukin (IL)-1 β,IL-10,IL-6,IL-17,IL-4 and transforming growth factor-β (TGF-β) were detected by enzyme-linked immunosorbent assay.Results Compared with the healthy control group,the Notch2 receptors (1.6 ± 3.2 vs.0.4 ± 0.3) expression level,Jagged1 ligand (44.0 ± 79.0 vs.11.3 ± 1.2) expression levels and the levels of target gene HES1(0.4 ±0.3 vs.0.1 ± 0.1) mRNA in the JIA group showed a significant increase,and the differences were all statistically significant (all P <0.05).Compared with the healthy control group,the JIA group showed an increased level of IL-1β [(182.22 ± 309.13) ng/L vs.(54.71 ± 20.33) ng/L],IL-10 [(32.99 ± 34.28) ng/L vs.(22.68 ±4.56) ng/L],IL-6 [(100.48 ±305.57) ng/L vs.(13.98 ±2.78) ng/L],IL-17 [(9.11 ± 17.57) ng/L vs.(2.42 ±0.29) ng/L] and TGF-β [(14.37 ±9.33) ng/L vs.(5.49 ±4.49) ng/L],and there were statistically significant differences (all P < 0.05).The expression level of HES1 mRNA was positively correlated with STAT3 mRNA in the So-JIA group (r =0.573,P <0.05).The expression level of HES1 mRNA was positively correlated with CD3 + T(r =0.528),CD19 + B (r =0.480),CD3 + CD4 + TH(r =0.457) and CD16 + CD56 + NK (r =0.598) cell absolute count in the So-JIA group (all P <0.05).The expression level of HES1 mRNA was positively correlated with CD3 + T cell absolute count in the p-JIA group (r =0.577,P < 0.05).Conclusion Imbalance between Notch pathway and lymphocytes and cytokines in children with JIA may play an important role in the pathogenesis of JIA.

4.
Journal of Clinical Pediatrics ; (12): 601-607, 2009.
Article in Chinese | WPRIM | ID: wpr-434154

ABSTRACT

Objective Macrophage activation syndrome (MAS) is a severe, potentially life-threatening clinical condition. The clinical features including precipitating events, clinical presentations, treatment strategies, outcome in systemic onset juvenile idiopathic arthritis (So-JIA) children with MAS were reviewed. Perforin A91V gene analysis was also performed. Methods Retrospective review of fourteen MAS cases with So-JIA from 2003 to 2008 from a collected database. Gene-specific polymerase chain reaction ( PCR) primers were used to analyze the perforin A91V gene polymorphism. Results Fourteen patients with age from 4 months to 12 years were considered to have evidence of MAS. Nine of them were boys. The primary diagnosis was systemic onset juvenile idiopathic arthritis. No medication was identified as trigger. Eleven of them had infections prior to MAS. Among them specific infectious agents were identified in four patients. High fever, new onset of hepatosplenomegaly, lymphadenopathy, liver function abnormality, abnormal lipid metabolism and hemophagocytosis were common clinical features. Two cases presented with acute respiratory distress syndrome (ARDS). Multiple organ failure (MOF) occurred in three cases. Three patients died. The variant form (NCBI: SNP rs35947132) of perforin A91V gene was detected in seven systemic onset juvenile idiopathic arthritis compolicated with MAS cases. However no mutation was detected. Clucocorticoid, intravenous immunoglobulin, immunoimpressive therapy were effective treatment of this condition. Plasmapheresis (HP) was successfully used in one case with severe MAS. Conclusions MAS is a rare and potentially fatal complication of childhood rheumatoid diseases such as systemic onset juvenile idiopathic arthritis. In this series, majority of them were male and most of them were preceded by infection. Bone marrow studies support the diagnosis. MOF may be a poor prognostic sign of So-JIA. Aggressive and early therapy is essential. There is no relationship between the variant form (NCBI: SNP rs35947132) of perforin A91V gene and So-JIA with MAS in this small sample's study. More research need to be done by increasing sample's numbers.

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