Objective To explore the possible anti-inflammatory mechanism of intensive insulin therapy （IIT） by studying the effect of IIT on the levels of TNF-α, IL-6, C-reactive protein （CRP） and APACHE Ⅱ score in biliary pyemia. Methods Twenty eight patients with biliary pyemia who were admitted by our department and given an operation within 24 h form Jan. 2005 to Dec. 2008 were randomly divided into two groups by using random number table numbers: one group treated with IIT （IIT group, n=14） and another group treated with routine insulin therapy （RIT group, n=14）. The inflammatory factors, such as TNF-α, IL-6 and CRP were detected dynamically and the APACHEⅡ score was calculated. ResultsThe level of CRP and APACHEⅡ score on day 5 and 7 and the levels of TNF-α and IL-6 on day 3, 5 and 7 after operation in IIT group were significantly lower than those in RIT group （P＜0.05, P＜0.0１）. Compared with preoperative levels, the IL-6 and APACHEⅡ score in IIT group commenced to decrease on day 3 after operation （P＜0.05）, that was earlier than control group. Conclusion The treatment with IIT can suppress the composition of TNF-α, IL-6 and CRP, protect impaired hepatic cells, and reduce APACHEⅡ score, the degree of systemic inflammation and incidence of MODS.
Objective To research the changes in plasma endothelin, LPS, TNF-α, IL-6 and IL-8 in the patients with obstructive jaundice (OJ) and non-obstructive jaundice (NOJ) after surgery. Methods The plasma ET, LPS, TNF-α, IL-6 and IL-8 were measured in 15 patients without jaundice as controls. Results As compared with NOJ, the postoperative changes of ET, LPS, TNF-α, IL-6 and IL-8 in OJ group increased significantly at multiple time points (P＜0.05). Conclusion There is interaction between ET,LPS, TNF-α, IL-6 and IL-8 and damage to multiple organ function in patients with OJ after surgery.
Objective To evaluate the effects of inflammatory cytokines, including tumor necrosis factorTNF-alpha; and interleukins (IL-6 and IL-8), to the expression of pigment epithelium-derived factor (PEDF) in human retinal pigment epithelium (RPE)cells. Method Cultured primary human RPE cells were treated with 20，2，0.2 , and 0.02 ng/ml of TNF-alpha;, IL-6 and IL-8 separately. The levels of PEDF expression were determined by Western blot of the supernant after 6，12，24 and 48 hours of culture. Results PEDF secretion of RPE cells was inhibited by TNF-alpha;, IL-6 and IL-8 in a time- and dose-dependent fashion. Compared with the controls, the expression of PEDF decreased significantly in 0.02 ng/ml and 6 hours group (F＝7.14, P＜0.05）, 2.00 ng/ml and 48 hours group（F=14.05，P＜0.01) , and 20.00 ng/ml and 24 hours group（F=11.53，P＜0.01). TNF-alpha; was the most strength inhibitor (F＝14,P＜0.01）.Conclusion TNF-alpha;, IL-6, and IL-8 could suppress the expression of PEDF in the cultured human RPE cells.
Objective To investigate the effect of inducible nitric oxide synthase (iNOS) inhibitor aminoguanidine on pancreas islets cultured with cytokines TNF-α and IL-1β in rats. Methods Islets isolated from Wistar rats were purified and cultured. According to whether cytokines TNF-α, IL-1β and aminoguanidine were added into the medium respectively or not, islets were divided into 4 groups: cultured with islet only was taken as blank control group, cultured with TNF-α+IL-1β as cytokine group, cultured with aminoguanidine as aminoguanidine group, and cultured with TNF-α+IL-1β and aminoguanidine as aminoguanidine+cytokine group. NO level in culture medium and iNOS activity in islets tissue (Test Kit), apoptosis (TUNEL method) and viability of islets cell (acridine orange/ethidium bromide stain), and the function of islets (insulin release test) were measured. Results Compared with blank control group, the activity of iNOS in islet tissue and level of NO in culture medium increased, and the mass mortality and apoptosis appeared in islet cells, while insulin secretion decreased in cytokine group (P＜0.01). Compared with cytokine group, the activity of iNOS 〔（3.17±0.51） U/ml vs. （38.93±4.72） U/ml〕 and level of NO 〔（50.5±10.4） μmol/L vs. （313.0±35.4） μmol/L〕 decreased, the survival 〔（72.73±3.14）% vs. （57.07±5.07）%〕 increased and the apoptosis rate 〔（20.11±8.48）% vs. （41.17±6.87）%〕 decreased, the insulin secretion (secretion index: 3.50±0.27 vs. 1.96±0.19) improved； There were all significant differences in 2 groups (P＜0.01). Conclusion The iNOS inhibitor aminoguanidine could prevent the islet from the damage of iNOS/NO, alleviate the impairment of cytokines to islets, and ameliorate the survival and function of islets.
ObjectiveTo investigate the diagnostic value of products triggered by endotoxin including cytokines and procalcitonin for differentiating bacterial pneumonia from pulmonary tuberculosis.
MethodsFifty patients diagnosed to have hospital-acquired pneumonia and another 50 patients diagnosed with tuberculosis admitted into West China Hospital between January and August 2015 were recruited in this study. The frequencies of CD4+ interferon (IFN)-γ+, CD4+ tumor necrosis factor (TNF)-α+, CD4+ interleukin (IL)-2+, CD4+ IL-10+ as well as CD8+IFN-γ+, CD8+TNF-α+, CD8+IL-2+, CD8+IL-10+ populations in peripheral blood were detected by flow cytometry after endotoxin stimulation. Meanwhile, the levels of procalcitonin, IL-6 and C reactive protein were measured by immunofluorescence staining.
ResultsThe frequencies of CD4+ IFN-γ+, CD4+ TNF-α+, CD4+ IL-2+, CD4+ IL-10+ as well as CD8+ IFN-γ+, CD8+ TNF-α+, CD8+ IL-2+, CD8+ IL-10+ populations in the pneumonia group increased significantly compared with those in the tuberculosis group (P < 0.05). The levels of procalcitonin, IL-6 and C-reactive protein in the pneumonia group increased statistically compared with the counterparts in the tuberculosis group (P < 0.05). The positive rates of procalcitonin, IL-6 and C-reactive protein in the pneumonia group were significantly higher than those in the tuberculosis group (P < 0.05).
ConclusionMeasurement of products triggered by endotoxin is beneficial for differential diagnosis of pneumonia from tuberculosis.
Objective To review the regulation of liver regeneration factors. Methods The literatures about liver regeneration related regulators in recent years were reviewed. Results With further advancement of researches on regulators of liver regeneration in recent years, there were more therapies for treatment of liver-related diseases. Regulators play important roles in the process of liver regeneration, as one of which, cell growth factor plays an essential role in liver cell proliferation, such as the proper expression of TNF-α and IL-6 promoting liver cell proliferation, HGF, TGF-α, EGF, ALR, FS, and others motivating liver cell proliferation, while TGF-β and IL-1 physically terminating liver cell proliferation. Conclusion By strengthening the studies on liver regeneration regulators, new methods may appear for treating liver-related diseases.
ObjectiveTo observe and analyze the correlations between aqueous humor cytokine concentrations and disorganization of retinal inner layers (DRIL), as well as postoperative visual acuity, in patients with idiopathic epiretinal membrane (iERM). MethodsA prospective clinical study. From November 2022 to October 2024, 40 eyes of 40 patients diagnosed with iERM at Ophthalmology Center of Zhejiang Provincial People's Hospital (Affiliated People's Hospital) underwent cataract surgery alone or combined with pars plana vitrectomy (iERM group) were enrolled; 19 eyes of 19 patients undergoing cataract surgery alone during the same period served as the control group. All eyes underwent best-corrected visual acuity (BCVA) testing and swept-source optical coherence tomography (SS-OCT). BCVA was assessed using a logarithmic visual acuity chart and converted to the logarithm of the minimum angle of resolution (logMAR) for statistical analysis. Central macular thickness (CMT) was measured using SS-OCT. The iERM group was further subdivided into DRIL-positive and DRIL-negative subgroups (21 eyes and 19 eyes, respectively), based on the presence or absence of DRIL. Aqueous humor samples were collected preoperatively from eyes in both the iERM and control groups. Concentrations of transforming growth factor (TGF)-β1, TGF-β2, TGF-β3, platelet-derived growth factor (PDGF)-AB, hepatocyte growth factor, fibroblast growth factor, vascular endothelial growth factor-A (VEGF-A), placental growth factor (PLGF), glial cell line-derived neurotrophic factor (GDNF), intercellular adhesion molecule-1 (ICAM-1), angiopoietin (Ang)-1, Ang-2, tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) were measured. Follow-up examinations using the same equipment and methods were performed at 1 month postoperatively. Aqueous cytokine levels were compared between the iERM group, control group, DRIL-positive subgroup, and DRIL-negative subgroup. Correlations between aqueous cytokine levels in the iERM group and BCVA or CMT were also analyzed. Intergroup comparisons utilized the Mann-Whitney U test; correlations between variables were assessed using Spearman's rank correlation analysis. ResultsCompared to the control group, the iERM group exhibited significantly higher aqueous concentrations of TGF-β1, TGF-β3, PDGF-AB, PLGF, GDNF, ICAM-1, Ang-1, and TNF-α (P＜0.05). Compared to the DRIL-negative subgroup, the DRIL-positive subgroup showed significantly elevated aqueous concentrations of TGF-β3, PDGF-AB, PLGF, GDNF, ICAM-1, Ang-1, Ang-2, TNF-α, and IL-6 (P＜0.05). Significant differences were observed in logMAR BCVA (P=0.028) and CMT (P＜0.001) within the iERM group between preoperative and 1-month postoperative measurements. LogMAR BCVA differed significantly between the DRIL-positive and DRIL-negative subgroups (P=0.048). Correlation analysis revealed that baseline aqueous levels of VEGF-A and IL-6 in eyes with DRIL were positively correlated with postoperative BCVA (r=0.324, 0.452; P=0.042, 0.003). No significant correlation was found between CMT and any cytokine (P＞0.05). ConclusionsAqueous humor cytokines are closely associated with DRIL in iERM patients. IL-6 and VEGF-A may serve as potential predictive biomarkers for early postoperative visual recovery.
ObjectiveTo study the expression of cytokine-induced neutrophil chemoattractant-1(CINC-1)in rats with transfusion-related acute lung injury(TRALI),explore its possible role in the pathogenesis of TRALI.
MethodsSixty Sprague-Dawley rats were randomly divided into a normal control group with sham operation,a positive control group with ALI induced by intravenous infusion of lipopolysaccharide(5 mg/kg),and a TRALI group treated by intraperitoneal injection of LPS 2h before the transfusion of human plasma (1mL),a LPS control group treated by intraperitoneal injection of LPS 2h before the transfusion of normal saline(1mL).The reverse transcription-polymerase chain (RT-PCR)was used to detect CINC-1 mRNA.The level of CINC-1 in lung tissue homogenate was measured by ELISA.Morphological changes of the lung tissue were observed under light microscope.Myeloperoxidase (MPO)in lung homogenate and wet lung weight to dry lung weight ratio (W/D)were observed.The number of cells and the percentage of polymorphonuclear neutrophil (PMN)in Bronchoalveolar lavage fluid (BALF)were also compared.
ResultsCompared with the normal control group and the LPS control group,the expression of CINC-1 protein and CINC-1 mRNA were increased significantly in lung of the positive control group and the TRALI group(P<0.05).The number of cells and the percentage of PMN in BALF of the TRALI group [(310.63±76.67)×106/L and (33.57±11.51)%] were significantly higher than those in BALF of the normal control group [(101.36±63.83)×106/L and (9.87±3.56)%](P<0.05).Tissue water content and MPO activity in the TRALI group were significantly higher than those in the normal control group (P<0.05).
ConclusionExpression of CINC-1 protein and CINC-1 mRNA are increased in the rat lung with TRALI and PMN infiltration in lung tissue,which suggests CINC-1 participate in the process of the PMN and endothelial cell adhesion and may play an important role in the pathogeneses of TRALI.
ObjectiveTo observe the expression levels of related cytokines in the vitreous humor of eyes with rhegmatogenous retinal detachment (RRD) associated with lattice degeneration (LD). MethodsA clinical observational study. From May 2022 to February 2023, 43 patients of 43 eyes diagnosed with RRD, with or without accompanying LD, who underwent their first pars plana vitrectomy (PPV) at Zhongda Hospital Southeast University and The Affiliated Eye Hospital of Nanjing Medical University were included in the study. The patients were divided into two groups: RRD with LD (LD group), consisting of 27 patients with 27 eyes, and RRD without LD (Non-LD group), consisting of 16 patients with 16 eyes. Additionally, 6 patients (6 eyes) with idiopathic macular holes and 4 patients (4 eyes) with idiopathic epiretinal membranes during the same period were selected as the control group. Before initiating PPV and without intraocular perfusion, a 0.5 ml sample of undiluted vitreous fluid from the central portion was excised and aspirated. The concentrations of monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein-1 alpha (MIP)-1α, MIP-1β, interferon-γ- inducible protein 10 (IP-10), interleukin-6 (IL-6), IL-8, macrophage migration inhibitory factor (MIF), tumor necrosis factor-alpha-α, interferon-γ, intercellular adhesion molecule 1 (ICAM-1), vascular cell adhesion molecule-1, platelet endothelial cell adhesion molecule 1 (PECAM-1), placental growth factor (PLGF) and vascular endothelial growth factor (VEGF) in the vitreous fluid were quantitatively measured using the Luminex high-throughput multiplex assay technology. The comparison of cytokine expression levels between groups was performed using the Kruskal-Wallis rank sum test, with significance levels for post-hoc pairwise comparisons adjusted by DSCF methods. ResultsThe eyes of the patients in the LD group, Non-LD group, and control group showed statistically significant differences (P＜0.05) in the concentrations of IL-6 (H=14.400), IL-8 (H=13.610), MCP-1 (H=12.050), VEGF (H=9.920), MIP-1α (H=6.620), IP-10 (H=7.780), MIF (H=12.920), PECAM-1 (H=9.990), ICAM-1 (H=8.070), and PLGF (H=16.850). Upon pairwise comparison between groups, the vitreous fluid concentrations of IL-6, IL-8, and PLGF in the LD group were found to be significantly higher than those in the Non-LD group (P＜0.05). ConclusionThe expression levels of IL-6, IL-8, and PLGF are elevated in the vitreous fluid of eyes with RRD accompanied by LD.
