Interleukin 6 and Bone Erosions in Rheumatoid Arthritis in an African Hospital

Introduction: Rheumatoid arthritis (RA) is a chronic, erosive and deforming inflammatory rheumatic disease. In the era of biotherapies and the arrival of biosimilars in sub-Saharan Africa, the objective of this study was to describe plasma IL-6 variations in RA patients at Cité Verte District Hospital (Cameroon). Material and Methods: Descriptive and analytical cross-sectional study from December 1, 2021 to May 31, 2022. We included patients over 18 years old suffering from RA (ACR/EULAR 2010). Patients with an infection were not included. The data collected were age, sex, smoking status, family history, disease duration, disease activity by DAS28, CRP, rheumatoid factor, and plasma level of IL-6. Bone erosion was sought on radiography and ultrasound. Result: We included 31 patients, 25 of whom were women (80.6%). The mean age was 47.27 ± 17.97 years. Disease activity was predominantly moderate (32.3%) and severe (32.3%). Mean IL-6 level was 15.29 ± 2.36 pg/ml (extremes: 11.26 pg/ml and 20.15 pg/ml). IL-6 levels were higher in patients with a history of smoking. Similarly, IL-6 levels were higher in patients with mildly active RA in remission than in moderately and severely active RA. Mean IL-6 levels were significantly higher in patients with erosive RA (16.3 pg/ml VS 14.6 pg/ml). Conclusion: IL-6 levels were significantly elevated in men, weaned smokers and patients with bone erosions.

Effect of flurbiprofen combined with prednisolone on interleukin-6 in elderly surgery patients

Objective: To determine the effect of flurbiprofen combined with prednisolone on interleukin-6 in elderly surgery patients. Methods: In this double-blind randomized controlled study, patients aged 65 to 80 who were undergoing spinal fusion surgery for disc herniation were administered flurbiprofen 100 mg (P group, flurbiprofen group), prednisolone 0.6 mg/kg (D group, prednisolone group), prednisolone 0.6 mg/kg plus flurbiprofen 100 mg (P + D group, flurbiprofen + prednisolone group) or normal saline (S group, saline group) 15 minutes before the induction of anesthesia. Plasma samples were collected before surgery (T0) and on day 1 (T1), day 2 (T2) and day 3 (T3) following surgery. At the same time, systemic inflammatory response syndrome (SIRS) was assessed by SIRS criteria. The levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and C-reactive protein (CRP) for collected samples were measured. Results: Other groups had significantly lower levels of IL-6, CRP and occurrence of SIRS than S group (p < 0.05). Compared to groups P and D, the levels of IL-6 and CRP in P + D group were significantly lower on T1 (p < 0.05). Peak levels of IL-6 in all groups were presented on T1 (p 0.05). The levels of CRP within three days were significantly different but did not show peak levels (p > 0.05). Conclusion: Compared to prednisolone or flurbiprofen, combining flurbiprofen with prednisolone in elderly surgery patients led to an increased suppression of IL-6.

Association of serum interleukin-6 with negative symptoms in stable early-onset schizophrenia

BACKGROUND Accumulating evidence suggests that the inflammatory cytokine interleukin-6(IL-6)contributes to the pathophysiology of psychiatric disorders.However,there was no study concerning the relationship between IL-6 concentrations and clinical features in the chronic phase of early-onset schizophrenia(EOS).AIM To investigate the relationship between serum IL-6 concentration and the clinical features of EOS.METHODS We measured serum IL-6 Levels from 74 patients with chronic schizophrenia,including 33 with age at onset<21 years(EOS group)and 41 with onset≥21 years in[adult-onset schizophrenia(AOS)group],and from 41 healthy controls.Symptom severities were evaluated using the Positive and Negative Syndrome Scale(PANSS).RESULTS Serum IL-6 concentrations were higher in both EOS and AOS groups than healthy controls(F=22.32,P<0.01),but did not differ significantly between EOS and AOS groups(P>0.05)after controlling for age,body mass index,and other covariates.Negative symptom scores were higher in the EOS group than the AOS group(F=6.199,P=0.015).Serum IL-6 concentrations in the EOS group were negatively correlated with both total PANSS-negative symptom score(r=-0.389,P=0.032)and avolition/asociality subscore(r=-0.387,P=0.026).CONCLUSION Patients with EOS may have more severe negative symptoms than those with adult-onset schizophrenia during the chronic phase of the illness.IL-6 signaling may regulate negative symptoms and its avolition/asociality subsymptoms among the early-onset chronic schizophrenic patients.

Exploring the role of interleukin-6 receptor blockade in epilepsy and associated neuropsychiatric conditions through a mendelian randomization study

BACKGROUND The interplay between inflammation,immune dysregulation,and the onset of neurological disorders,including epilepsy,has become increasingly recognized.Interleukin(IL)-6,a pro-inflammatory cytokine,is suspected to not only mediate traditional inflammatory pathways but also contribute to neuroinflammatory responses that could underpin neuropsychiatric symptoms and broader psychiatric disorders in epilepsy patients.The role of IL-6 receptor(IL6R)blockade presents an intriguing target for therapeutic intervention due to its potential to attenuate these processes.neuropsychiatric conditions due to neuroinflammation.METHODS Mendelian randomization(MR)analysis employing single nucleotide poly-morphisms(SNPs)in the vicinity of the IL6R gene(total individuals=408225)was used to evaluate the putative causal relationship between IL6R blockade and epilepsy(total cases/controls=12891/312803),focal epilepsy(cases/controls=7526/399290),and generalized epilepsy(cases/controls=1413/399287).SNP weights were determined by their effect on C-reactive protein(CRP)levels and integrated using inverse variance-weighted meta-analysis as surrogates for IL6R effects.To address potential outlier and pleiotropic influences,sensitivity analyses were conducted employing a variety of MR methods under different modeling assumptions.RESULTS The genetic simulation targeting IL6R blockade revealed a modest but significant reduction in overall epilepsy risk[inverse variance weighting:Odds ratio(OR):0.827;95%confidence interval(CI):0.685-1.000;P=0.05].Subtype analysis showed variability,with no significant effect observed in generalized,focal,or specific childhood and juvenile epilepsy forms.Beyond the primary inflammatory marker CRP,the findings also suggested potential non-inflammatory pathways mediated by IL-6 signaling contributing to the neurobiological landscape of epilepsy,hinting at possible links to neuroinflammation,psychiatric symptoms,and associated mental disorders.CONCLUSION The investigation underscored a tentative causal relationship between IL6R blockade and decreased epilepsy incidence,likely mediated via complex neuroinflammatory pathways.These results encouraged further in-depth studies involving larger cohorts and multifaceted psychiatric assessments to corroborate these findings and more thoroughly delineate the neuro-psychiatric implications of IL-6 signaling in epilepsy.The exploration of IL6R blockade could herald a novel therapeutic avenue not just for seizure management but also for addressing the broader psychiatric and cognitive disturbances often associated with epilepsy.

Impact of interleukin 6 levels on acute lung injury risk and disease severity in critically ill sepsis patients

BACKGROUND Sepsis is a life-threatening condition characterized by a dysregulation of the host response to infection that can lead to acute lung injury(ALI)and multiple organ dysfunction syndrome(MODS).Interleukin 6(IL-6)is a pro-inflammatory cytokine that plays a crucial role in the pathogenesis of sepsis and its complications.AIM To investigate the relationship among plasma IL-6 levels,risk of ALI,and disease severity in critically ill patients with sepsis.METHODS This prospective and observational study was conducted in the intensive care unit of a tertiary care hospital between January 2021 and December 2022.A total of 83 septic patients were enrolled.Plasma IL-6 levels were measured upon admission using an enzyme-linked immunosorbent assay.The development of ALI and MODS was monitored during hospitalization.Disease severity was evaluated by Acute Physiology and Chronic Health Evaluation II(APACHE II)and Sequential Organ Failure Assessment(SOFA)scores.RESULTS Among the 83 patients with sepsis,38(45.8%)developed ALI and 29(34.9%)developed MODS.Plasma IL-6 levels were significantly higher in patients who developed ALI than in those without ALI(median:125.6 pg/mL vs 48.3 pg/mL;P<0.001).Similarly,patients with MODS had higher IL-6 levels than those without MODS(median:142.9 pg/mL vs 58.7 pg/mL;P<0.001).Plasma IL-6 levels were strongly and positively correlated with APACHE II(r=0.72;P<0.001)and SOFA scores(r=0.68;P<0.001).CONCLUSIONElevated plasma IL-6 levels in critically ill patients with sepsis were associated with an increased risk of ALI andMODS.Higher IL-6 levels were correlated with greater disease severity,as reflected by higher APACHE II andSOFA scores.These findings suggest that IL-6 may serve as a biomarker for predicting the development of ALI anddisease severity in patients with sepsis.

Analyze interleukin-1β,interleukin-6,and tumor necrosis factor-αlevels in dry eye and the therapeutic effect of cyclosporine A

BACKGROUND Dry eye is a common eye disease.Artificial tears supplements are widely used for the treatment of dry eyes.However,multiple adverse effects have been observed in patients receiving long-term treatment with artificial tears,which may affect the therapeutic effect.AIM To analyze the characteristics of interleukin-1β(IL-1β),interleukin-6(IL-6),and tumor necrosis factor-alpha(TNF-α)levels in patients with dry eye and the therapeutic effect of artificial tears combined with cyclosporine A.METHODS A total of 124 dry eye patients treated at The First People’s Hospital of Xining from April 2020 to April 2022 were selected as the observation group,while 20 healthy individuals served as the control group during the same period.Levels of inflammatory markers,including IL-1β,IL-6,and TNF-α,were analyzed.The observation group was further divided into a study group and a control group,each consisting of 62 patients.The control group received artificial tears,whereas the study group received a combination of artificial tears and cyclosporine A.Inflammatory markers,Schirmer’s test(SIT),tear break-up time(TBUT),corneal fluorescein staining(CFS),National Eye Institute Visual Function Questionnaire-25(NEI-VFQ-25)scores,and adverse events(AEs)were compared between the two groups.RESULTS The observation group exhibited significantly elevated serum levels of IL-1β,IL-6,and TNF-αin comparison to the healthy group.Following treatment,the study group demonstrated substantial reductions in IL-1β,IL-6,and TNF-αlevels relative to the control group.Moreover,after treatment,the study group experienced a marked decrease in CFS scores and significant increases in both SIT and BUT levels when compared to the control group.Additionally,significant improvements were observed in the primary symptom of dry eye and secondary symptoms such as photophobia,foreign body sensation,fatigue,red eye,and burning sensation within the study group.Furthermore,post-treatment NEI-VFQ-25 scores across all dimensions exhibited significant enhancements in the study group compared to the control group(P<0.05).It is noteworthy that significant AEs were reported in both groups throughout the treatment period.CONCLUSION Cyclosporine A combined with artificial tears is effective in treating dry eye,yielding enhanced outcomes by improving SIT and TBUT levels,reducing CFS scores,and ameliorating vision-related quality of life.

Efficacy of Laparoscopic Cholecystectomy in Treating Patients with Gallstones and Its Effect on Interleukin-6 and Tumor Necrosis Factor-α Levels

Objective:To investigate the efficacy of laparoscopic cholecystectomy in the treatment of patients with gallstones and its effect on the levels of interleukin-6(IL-6)and tumor necrosis factor-α(TNF-a).Methods:A total of 82 patients with gallstones admitted from July 2020 to July 2023 were recruited and allocated into control and observation groups using the random number table method,with 41 cases in each group.The patients were treated with laparoscopic cholecystectomy,with the anterior triangle anatomical approach to the gallbladder in the control group and the posterior triangle anatomical approach to the gallbladder in the observation group.The treatment effect and inflammatory factor levels of both groups were observed and compared.Results:When comparing the clinical outcomes of both patient groups,the key parameters evaluated included time to mobilization,duration of surgery,extubation time,and intraoperative bleeding.The observation group exhibited a significant advantage in these parameters compared to the control group(P<0.05).Regarding the levels of inflammatory factors between the two groups before and after treatment,there was no significant difference in values before treatment.However,following treatment,patients in the observation group showed significantly lower levels of IL-6,TNF-α,and C-reactive protein(CRP)compared to the control group(P<0.05).Conclusion:Patients undergoing laparoscopic cholecystectomy for gallstones can benefit from the implementation of the posterior triangular anatomical approach to the gallbladder,which not only enhances therapeutic efficacy but also offers significant advantages in reducing levels of IL-6,TNF-α,and CRP.Therefore,it is recommended for the widespread adoption of this treatment approach in clinical practice.

Analysis of the Role of D-Dimer,Interleukin-6,and Interleukin-18 in Differential Diagnosis of Pediatric Refractory Mycoplasma pneumoniae Pneumonia

Objective:To analyze the value of D-dimer(D-D),interleukin-6(IL-6),and IL-18 in the differential diagnosis of children with refractory Mycoplasma pneumoniae pneumonia(RMPP).Methods:The medical records of 92 children with Mycoplasma pneumoniae pneumonia(MPP)treated in the hospital were selected for retrospective analysis from January 2023 to January 2024.After comprehensive examinations such as computed tomography examination of the chest,48 children with general Mycoplasma pneumoniae pneumonia(GMPP)were put in the GMPP group and 44 children with RMPP were grouped in the RMPP group.The IL-6,IL-18,and D-D levels were compared between the two groups,and the receiver operating characteristic(ROC)curves were plotted to analyze their value for differential diagnosis of RMPP.Results:The levels of IL-6,IL-18,and D-D in the RMPP group were higher than those in the GMPP group(P<0.05);the ROC curves showed that the specificity of the differential diagnosis of IL-6,IL-18,and D-D was higher,and their diagnostic value was significant.Conclusion:Determination of IL-6,IL-18,and D-D levels in children with MPP can further diagnose the children’s condition,which can help physicians formulate targeted treatment plans,and is of great significance to the improvement of the children’s condition,which is worthy of attention.

慢加急性乙型肝炎肝衰竭患者细菌感染病原菌分布及血清PCT、IFN-γ和IL-6水平变化分析

目的调查慢加急性乙型肝炎肝衰竭(HBV-ACLF)患者细菌感染病原菌分布特征,分析血清降钙素原(PCT)、干扰素-γ(IFN-γ)和白细胞介素-6(IL-6)水平预测细菌感染的效能。方法2019年12月~2023年1月我院收治的HBV-ACLF患者86例,常规分离和鉴定菌种,采用电化学发光免疫法检测血清PCT水平,采用ELISA法检测血清IFN-γ和IL-6水平,应用受试者工作特征(ROC)曲线评估血清指标联合预测HBV-ACLF患者发生细菌感染的效能。结果本组发生细菌感染者37例,未发生明确感染者49例;在37例HBV-ACLF并发细菌感染患者中,共检出68株感染病原菌,其中革兰氏阴性菌41株(60.3%),革兰氏阳性菌27株(39.7%);感染组血清PCT、IFN-γ和IL-6水平分别为(10.9±3.1)μg/L、(46.5±1.9)pg/mL和(16.9±1.6)pg/mL,均显著高于未感染组【分别为(0.9±0.1)μg/L、(20.1±2.4)pg/mL和(4.8±0.9)pg/mL,P<0.05】,28 d和90 d病死率分别为67.6%和75.7%,均显著高于未感染组(分别为8.2%和12.2%,P<0.05);经ROC分析显示,分别以PCT>3.3μg/L、IFN-γ>45.5 pg/mL和IL-6>15.4pg/mL为截断点,其联合预测HBV-ACLF患者并发细菌感染的曲线下面积(AUC)为0.874,诊断的灵敏度为93.6%,特异度为84.1%。结论HBV-ACLF患者细菌感染的病原菌分布具有一定的特征性,以革兰氏阴性菌感染为主,除检测血清PCT水平外,监测血清IFN-γ和IL-6水平可能有助于早期发现细菌感染而给予预防性处理,或能提供生存率。

白细胞介素6与核因子κB对胰腺癌的诊断价值及其与临床病理分期的关系研究

目的探究白细胞介素6(IL-6)、核因子κB(NF-κB)对胰腺癌的诊断价值及其与胰腺癌临床病理分期的关系。方法收集2019年6月至2022年6月新疆维吾尔自治区人民医院收治的68例胰腺癌患者作为病例组,60例同期于本院门诊健康体检者作为对照组。检测2组受试者血清中IL-6、NF-κB的表达水平,采用受试者工作特征(ROC)曲线分析IL-6、NF-κB表达对胰腺癌诊断的价值;比较不同临床病理分期患者血清IL-6、NF-κB水平的表达差异。结果病例组患者血清IL-6和NF-κB水平明显高于对照组,差异有统计学意义[IL-6:16.33(8.41,67.41)ng/L比6.15(5.55,7.33)ng/L,Z=6.109,P<0.001;NF-κB:449.52(230.37,568.28)ng/L比150.35(126.48,167.30)ng/L,Z=5.463,P<0.001]。IL-6、NF-κB诊断胰腺癌ROC曲线下面积(AUC)分别为0.813±0.041、0.920±0.024,联合检测的AUC为0.923±0.024。T_(3)、T_(4)期胰腺癌患者血清IL-6、NF-κB水平与T_(1)、T_(2)期患者比较差异均有统计学意义(均P<0.05)。血清IL-6、NF-κB水平随着淋巴结转移程度(N_(0)~N_(2))的增高而增高,差异均有统计学意义(均P<0.05),且N_(1)、N_(2)期胰腺癌患者血清IL-6、NF-κB水平与N_(0)期患者相比,差异均有统计学意义(均P<0.05)。远处转移胰腺癌患者(M_(1))的血清IL-6、NF-κB水平高于未远处转移的患者(M_(0)),差异有统计学意义(P=0.024)。结论血清IL-6、NF-κB可以作为胰腺癌早期诊断、临床病理分期的血清学标志物,其可能与胰腺癌的发生、发展密切相关。

C反应蛋白、降钙素原和白细胞介素6在早期急性胰腺炎合并感染中的诊断价值分析

目的探讨C反应蛋白(CRP)、降钙素原(PCT)、白细胞介素6(IL-6)在早期急性胰腺炎(AP)合并感染中的诊断价值。方法选择2022年1月至2024年1月滕州市中心人民医院消化内科收治的112例AP患者,依据患者入院时的严重程度将其划分为3组分别为轻症组、中重症组、重症组。记录入院首日、3 d、7 d,IL-6、CRP、PCT水平;同时以Spearman相关性分析病情严重程度与IL-6、CRP、PCT相关性。结果入院首日,3组患者IL-6、CRP、PCT水平均高于各指标正常参考范围。IL-6水平入院首日、入院3 d、入院7 d,重症组>中重症组>轻症组(P<0.05),且入院7 d>入院3 d>入院首日(P<0.05)。CRP水平,重症组、中重症组入院首日无差异(P>0.05),重症组、中重症组>轻症组(P<0.05);入院3 d、入院7 d,重症组>中重症组>轻症组(P<0.05),且入院7 d>入院3 d>入院首日(P<0.05)。入院不同时间三组PCT水平,均重症组>中重症组>轻症组(P<0.05);轻症组、中重症组入院不同时间段PCT水平,均入院3 d>入院7 d>入院首日(P<0.05);重症组入院3 d、入院7 d比较无差异(P>0.05),入院3 d、入院7 d>入院首日(P<0.05)。IL-6、CRP、PCT、IL-6+CRP+PCT对AP的AUC分别为0.82、0.85、0.90、0.94。IL-6、CRP、PCT预测AP的截断值分别为50.77 ng/L、124.56 mg/L、3.25μg/L。经ROC曲线分析显示,PCT为最佳AP预测因子,IL-6、CRP、PCT联合诊断准确性更高。结论PCT、CRP、IL-6单一或联合用于AP合并感染的诊断评估均具有一定价值,且三者联合应用诊断价值更高,可早期评价患者病情严重程度,指导疾病治疗,建议将其作为AP早期病情评估、预后预测参考指标。

PTED治疗对腰椎间盘突出症IL-6、HMGB-1、IL-17水平的影响

目的探讨经皮椎间孔镜下椎间盘切除术(PTED)治疗对腰椎间盘突出症白介素-6(IL-6)、白介素-17(IL-17)和高迁移率族蛋白-1(HMGB-1)水平的影响。方法选取2019年4月至2022年8月保定市第一中心医院收治的122例腰椎间盘突出症患者为研究对象,根据不同治疗方案分为TLIF组[n=58,经椎间孔腰椎融合术(TLIF)治疗]和PTED组(n=64,PTED治疗),比较两组IL-6、HMGB-1、IL-17水平、分析PTED组不同临床特征与病理特征的IL-6、HMGB-1、IL-17水平、采用多元Logistic回归分析影响PTED组IL-6、HMGB-1、IL-17水平的危险因素,比较两组临床疗效及并发症情况。结果PTED组总有效率(98.44%)高于TLIF组(87.93%),差异有统计学意义(P<0.05);PTED组IL-6、IL-17、HMGB-1水平均低于TLIF组,差异有统计学意义(P<0.05);PTED组不同年龄、有无糖尿病、手术时间长短、是否吸烟、是否营养不良和是否免疫功能低下之间IL-6、IL-17、HMGB-1水平比较,差异有统计学意义(P<0.05);不同性别、不同BMI、术中出血量多少、有无使用内固定之间IL-6、IL-17、HMGB-1水平比较,差异无统计学意义(P>0.05);多元Logistic回归分析显示,年龄>60岁、手术时间>3h、营养不良、糖尿病、免疫功能低下、吸烟为影响PTED组IL-6、IL-17、HMGB-1水平的危险因素(P<0.05);PTED组并发症总发生率低于TLIF组,差异有统计学意义(P<0.05)。结论PTED治疗能明显降低腰椎间盘突出症患者IL-6、HMGB-1和IL-17水平,且手术疗效确切;而年龄、手术时间、营养不良、糖尿病、免疫功能低下、吸烟等是影响PTED治疗对腰椎间盘突出症IL-6、HMGB-1、IL-17水平的危险因素。

sCD14-ST联合IL-6对细菌性呼吸道感染患儿的诊断价值

目的探讨可溶性白细胞分化抗原14亚型(sCD14-ST)联合白细胞介素-6(IL-6)对细菌性呼吸道感染患儿的诊断价值。方法选取2021年4月至2022年4月该院收治的55例细菌性呼吸道感染患儿作为观察组,另选取同期在该院健康体检的55例儿童作为对照组。检测并比较两组sCD14-ST、IL-6水平,采用Pearson相关分析细菌性呼吸道感染患儿sCD14-ST水平与IL-6水平的相关性,采用多因素Logistic回归分析儿童发生细菌性呼吸道感染的危险因素,绘制受试者工作特征曲线分析血清sCD14-ST、IL-6对儿童发生细菌性呼吸道感染的诊断价值。结果观察组血清sCD14-ST、IL-6水平均高于对照组,差异均有统计学意义(P<0.05)。Pearson相关分析结果显示,细菌性呼吸道感染患儿血清sCD14-ST水平与IL-6水平呈正相关(r=0.422,P=0.001)。多因素Logistic回归分析结果显示,sCD14-ST>443.82 pg/mL、IL-6>13.75 pg/mL是儿童发生细菌性呼吸道感染的独立危险因素(P<0.05)。2项指标联合诊断儿童发生细菌性呼吸道感染的曲线下面积为0.887(95%CI:0.741~0.975),灵敏度为90.91%,特异度为80.00%。结论sCD14-ST>443.82 pg/mL、IL-6>13.75 pg/mL是儿童发生细菌性呼吸道感染的独立危险因素,2项指标联合检测能提高对儿童发生细菌性呼吸道感染的诊断价值。

第三腰椎骨骼肌指数联合白细胞介素6、激活素A对胰腺癌恶病质的早期预测价值

目的研究第三腰椎骨骼肌指数(L3-SMI)联合白细胞介素6(IL-6)、激活素A(Activin A)检测对胰腺癌恶病质的早期预测价值。方法将2020年7月—2023年7月经河北医科大学第四医院确诊的74例胰腺癌患者纳入研究。根据患者入院后是否发生恶病质,分为恶病质组(n=58)、非恶病质组(n=16)。观测患者入院后48 h内的L3-SMI、IL-6、Activin A水平。正态分布的计量资料两组间比较采用成组t检验;计数资料组间比较采用χ2检验。采用多因素Logistic回归分析筛选胰腺癌恶病质的影响因素,并通过受试者工作特征曲线(ROC曲线)分析L3-SMI以及血清IL-6、Activin A单独或联合检测对胰腺癌恶病质的预测价值。ROC曲线下面积(AUC)比较采用Z检验。结果恶病质组L3-SMI水平明显低于非恶病质组,血清IL-6、Activin A水平明显高于非恶病质组(t值分别为8.649、3.049、8.100,P值均<0.05)。多因素Logistic回归分析结果显示,L3-SMI(OR=0.266,95%CI:0.103~0.683)以及血清IL-6(OR=4.158,95%CI:1.368~12.333)、Activin A(OR=5.124,95%CI:1.550~16.939)是胰腺癌恶病质发生的影响因素(P值均<0.05)。L3-SMI、IL-6、Activin A预测胰腺癌恶病质的AUC分别为0.851、0.752、0.791,均明显低于三者联合检测的0.946(Z值分别为−2.841、−2.552、−2.647,P值均<0.001),其敏感度、特异度、约登指数最高,分别为90.9%、87.8%、0.788。结论L3-SMI联合血清IL-6、Activin A检测对胰腺癌恶病质具有较好的早期预测价值。

基于FAERS数据库的周期蛋白依赖性激酶4/6抑制剂血液毒性真实世界研究

目的 基于美国美国食品药品管理局(FDA)的不良事件报告系统(FAERS)分析3种周期蛋白依赖性激酶4/6(CDK4/6)抑制剂上市后的不良事件(AEs)信号,为临床用药安全提供参考。方法 提取FAERS数据库2015年第一季度至2022年第一季度共29个季度AEs,利用报告比值比法(ROR)和比例报告比值法(PRR)对CDK4/6抑制剂AEs进行数据挖掘。结果 CDK4/6抑制剂相关性血液毒性报告共有7 872份,各抑制剂血液毒性AEs占总AEs比例依次为哌柏西利(80.31%)>瑞博西利(15.36%)>阿贝西利(4.33%)。血液毒性常见中性粒细胞减少和贫血。哌柏西利(2 982/6 322,47.17%)和瑞博西利(613/1 209,50.70%)致中性粒细胞减少的报告占比较阿贝西利(117/341,34.31%)更高,血液毒性主要发生在药物开始使用后60 d内(1 630,61.86%),哌柏西利中位时间最长,且用药90 d后仍有32.9%的患者存在血液毒性,不同CDK4/6抑制剂血液毒性临床表现及发生强度存在差异。结论 哌柏西利、阿贝西利、瑞博西利均会导致明显的血液毒性,其中阿贝西利致血液毒性报告最少,但要警惕阿贝西利致贫血后导致死亡的风险。用药后的2个月内密切监测全血细胞计数,关注中性粒细胞、血红蛋白等水平,警惕CDK4/6抑制剂相关血液AEs的发生。

微小RNA-155和白细胞介素-6在子痫前期极早产新生儿中表达水平的差异及临床意义

目的观察微小RNA-155(miR-155)mRNA和白细胞介素-6(IL-6)在子痫前期极早产新生儿中表达水平的差异及临床意义。方法选择2021年1月至12月聊城市人民医院产科收治的28例子痫前期孕母分娩极早产新生儿〔胎龄<32周和(或)体质量<1500 g〕作为观察组,以同期本院住院治疗其他原因导致的极早产儿26例作为对照组。收集患儿相关电子病历临床资料,包括极早产儿和孕母一般情况(性别、胎龄、出生体质量、有无子痫前期等)、有创通气比例、支气管肺发育不良(BPD)比例、急性呼吸窘迫综合征(ARDS)和早发脓毒症发生率、白细胞计数(WBC)、中性粒细胞计数(NEUT),以及出生后脐动脉血清中miR-155 mRNA表达、IL-6水平,并比较两组上述指标的差异。采用Pearson相关性分析法分析miR-155、IL-6水平的相关性。结果观察组出生体质量明显低于对照组(kg:1.21±0.22比1.32±0.33,P<0.05),有创通气、BPD、ARDS比例和脓毒症发生率均明显高于对照组〔有创通气比例:75.0%(21/28)比57.7%(15/26),BPD比例:35.7%(10/28)比11.5%(3/26),ARDS发生率:100.0%(28/28)比84.6%(22/26),脓毒症发生率:71.4%(20/28)比53.8%(14/26),均P<0.05〕,miR-155 mRNA表达和IL-6水平均明显高于对照组〔miR-155 mRNA(2-ΔΔCt):0.93±0.18比0.17±0.03,IL-6(ng/L):73.84(33.44,429.00)比19.05(9.30,47.20),均P<0.05〕。Pearson相关性分析显示:miR-155和IL-6水平呈明显正相关(r=0.782,P<0.01)。两组随出生时间延长,WBC和NEUT均逐渐降低,观察组出生后各时间点WBC和NEUT比较差异均有统计学意义,出生后48 h和72 h均明显低于出生后24 h(均P<0.05)。观察组出生后24、48和72 h WBC均明显低于对照组(×109/L:出生后24 h为7.85±2.44比12.28±6.81,出生后48 h为7.31±3.53比10.98±7.91,出生后72 h为4.97±2.05比7.82±4.65,均P<0.05),NEUT仅出生后24 h和48 h两个时间点观察组明显低于对照组(×109/L:出生后24 h为4.13±1.93比7.45±5.67,出生后48 h为3.96±2.64比6.89±6.24,均P<0.05)。结论子痫前期极早产新生儿出生时机体内miR-155 mRNA表达、IL-6水平明显上调,机体炎症反应紊乱,对早期评估病情有一定价值。

抗熔滴型多元有机硅阻燃剂整理锦纶6织物的制备及其性能

为提升锦纶6织物阻燃性能,基于水解缩合反应原理,开发设计多元协效抗熔滴型含磷席夫碱基有机硅阻燃剂,并采用浸渍法对锦纶6织物进行阻燃整理。借助红外光谱、热重分析仪、微型燃烧量热仪、极限氧指数仪、扫描电镜、拉曼光谱及热裂解气质联用仪等技术分别对阻燃锦纶6织物的化学结构、热稳定性、燃烧行为及其燃烧后炭化层与气相热解产物系统研究。结果表明:阻燃锦纶6织物的炭化能力及阻燃性能有效提升,其残炭率可增加至33.9%,且在火焰移开后可快速实现自熄,并未有熔滴产生;相较于锦纶6织物,阻燃锦纶6织物的热释放速率峰值(PHRR)及总释热量(THR)分别下降23.8%及20.4%,火灾安全性有效提升;经水洗20次后,阻燃锦纶6织物仍可实现自熄,其PHRR及THR值相较于锦纶6织物,仍分别下降了14.1%及13.6%。

黄芩苷对干酵母致热大鼠的解热作用及血清TNF-α、IL-1β、IL-6、PGE_(2)、cAMP和脑组织NF-κB表达的影响

目的:观察黄芩苷对干酵母致热大鼠的解热作用并探讨其作用机制。方法:采用背部皮下注射干酵母构建大鼠发热模型,SD雄性大鼠随机分为正常对照,模型组,阳性组(阿司匹林,0.1 g/kg),黄芩苷高、中、低剂量组(160、80、40 mg/kg),连续给药3 d,测定各组大鼠肛温的变化;酶联免疫法(ELISA)检测血清肿瘤坏死因子-α(TNF-α)、白介素-1β(IL-1β)、白细胞介素-6(IL-6)、前列腺素E_(2)(PGE_(2))与环磷酸腺苷(cAMP)水平;Western Blot检测各组大鼠脑组织NF-κB p65(核转录因子-κB p65)蛋白表达。结果:黄芩苷高剂量组有显著解热效果(P<0.01),黄芩苷各剂量组均可不同程度降低大鼠血清TNF-α、IL-1β、IL-6、PGE 2和cAMP含量;与正常组比较,模型组脑组织NF-κB p65蛋白表达增多,黄芩苷高剂量组可明显降低大鼠脑组织NF-κB p65表达(P<0.05)。结论:黄芩苷可显著性降低干酵母引起的体温升高,解热机制可能与抑制TNF-α、IL-1β、IL-6、PGE_(2)与cAMP的分泌和减少脑组织NF-κB p65蛋白表达有关。

白细胞介素-6对胰腺癌小鼠癌组织的细胞增殖及上皮间质转化的影响

目的 探讨白细胞介素-6(IL-6)在胰腺癌裸鼠模型癌组织增殖与上皮间质化中的作用,并分析其分子机制。方法 将18只成功构建胰腺癌细胞荷瘤的BALB/c裸鼠模型随机分为模型对照组、IL-6过表达组和免疫球蛋白G(IgG)抗体组,每组6只。模型对照组于肿瘤部位注射生理盐水进行干预,IL-6过表达组于肿瘤部位注射IL-6过表达质粒进行干预,IgG抗体组予肿瘤部位注射IgG抗体进行干预。3组均于末次给药24 h后处死小鼠,并收集胰腺肿瘤组织。对各组肿瘤组织进行离体称重并计算抑瘤率。通过苏木精-伊红(HE)染色观察胰腺组织的病理学改变。采用酶联免疫吸附试验(ELISA)检测各组裸鼠肿瘤组织中IL-6、p-STAT3、NF-κB p65和VEGF蛋白的表达水平。采用蛋白质印迹法(Western blot)检测各组肿瘤组织中E-cadherin、Vimentin、MMP-9蛋白的表达水平。采用实时荧光定量聚合酶链反应(qRT-PCR)检测各组IL-6、p-STAT3、SOCS3基因的表达水平。结果 3组裸鼠胰腺肿瘤组织的平均瘤重及抑瘤率比较,差异均无统计学意义(P>0.05)。HE染色结果显示,模型对照组肿瘤组织细胞体积增大,癌细胞排列呈巢状;IL-6过表达组可见肿瘤组织轻度纤维化,少量炎症浸润;IgG抗体组可见核分裂象,大量肿瘤细胞坏死,局灶组织纤维化。IL-6过表达组E-cadherin蛋白、SOCS3基因表达水平低于模型对照组和IgG抗体组,而Vimentin、MMP-9、IL-6、p-STAT3、NF-κB p65、VEGF蛋白的表达水平及IL-6、NF-κB p65基因的表达水平高于模型对照组和IgG抗体组,差异均有统计学意义(P<0.05);IgG抗体组Vimentin、MMP-9、IL-6、p-STAT3、NF-κB p65、VEGF蛋白的表达水平及IL-6、NF-κB p65基因的表达水平低于模型对照组,而E-cadherin和SOCS3基因水平高于模型对照组,差异均有统计学意义(P<0.05)。结论 IL-6可以通过p-STAT3和(或)NF-κB p65信号通路调节胰腺癌裸鼠模型肿瘤组织中的相关细胞因子,影响肿瘤组织的增殖及上皮间质化。

外圆磨削18CrNiMo7-6力模型及表面完整性研究

为了准确和有效地控制磨削参数对磨削力及表面完整性的影响,通过解析法,以磨粒与材料间的塑性变形、压痕理论以及剪切应变效应为理论依据,建立了三阶段的磨削力理论模型。选定棕刚玉砂轮进行磨削试验,探究了磨削参数对磨削力的影响以及磨削参数和磨削力对表面完整性的影响,通过外圆横向磨削正交试验获得了外圆磨削最优工艺参数。结果表明,外圆磨削力模型法向磨削力和切向磨削力的预测平均误差分别为5.56%和7.08%;砂轮径向进给速度f_(r)对磨削力的影响最大,磨削宽度b次之,工件转速n_(w)和砂轮粒度的影响较小;f_(r)和b对残余应力的影响较大,砂轮粒度对表面粗糙度的影响最大;随着磨削力的增大,表面粗糙度值一直增大,残余应力先减小后增大,沿深度方向残余应力最大值先增大后减小,在试验所取参数条件下,影响残余应力的深度分布范围基本在20~40μm;最优工艺参数组合如下:f_(r)=0.15 mm/min,n_(w)=120 r/min,b=10 mm,砂轮粒度80。