Herpetol ameliorates allergic contact dermatitis through regulating T-lymphocytes

An immunosuppressant with fewer adverse effects is still urgently needed for increasing numbers of patients suffering from allergic contact dermatitis. In the present study, we aimed to investigate the immunosuppressive activity of herpetol on T-lymphocytes in vitro and in vivo and explore its potential pharmacological mechanism. The results showed that herpetol could effectively inhibit the proliferation of activated T cells and reduce the production of pro-inflammatory cytokines at 5–20 μM. Additionally, the ear swelling and inflammatory responses induced by picryl chloride were significantly ameliorated by herpetol at 20–40 mg/kg. Moreover, herpetol could cause cell cycle arrest of activated T cells in a dose-dependent manner. Furthermore, herpetol reduced the expression and activity of HIF-1α, Glut1 and LDHA, leading to glycolysis inhibition in activated T cells. Taken together, herpetol showed an immunosuppressive activity against T-cell mediated immune responses in vitro and in vivo, and it has potential for the treatment of immune-related skin diseases.     

表皮生长因子受体家族特点及与肿瘤关系的研究进展

人类表皮生长因子受体(human epidermal growth factor receptor,HER)家族属于酪氨酸激酶Ⅰ亚族的跨膜蛋白受体家族，包括4个成员，分别是HER1(EGFR/ErbB1)、HER2(ErbB2)、HER3(ErbB3)和HER4(ErbB4)，由erb基因编码，在细胞生长、增殖及凋亡等活动中起到重要的调节作用。同时，作为原癌基因家族，HER家族在许多人类肿瘤中异常激活及过度表达，是这些肿瘤发生和发展的关键因素，与多种肿瘤的临床病理特征及肿瘤患者的不良预后密切相关。HER家族一直是肿瘤领域基础实验研究和临床诊治研究的热点之一，以其为靶点的综合抗肿瘤治疗方案获得了良好的临床疗效。本文通过查阅对有关HER家族及其与肿瘤关系的相关文献，总结人表皮生长因子受体家族特点及其在肿瘤发生发展、生物靶向诊治方面的最新研究进展。相信随着HER家族临床研究成果的不断丰富及分子生物学技术的快速发展可为肿瘤临床诊治提供新的思路和帮助。     

The RNA m6A methyltransferase METTL3 promotes pancreatic cancer cell proliferation and invasion

Epigenetic modifications are involved in carcinogenesis and METTL3 is involved in RNA methylation. This study aimed to explore the role of the RNA m6A methyltransferase METTL3 in pancreatic cancer cells. The m6A modification was analyzed in human pancreatic cancer and paracancerous specimens, as well as in the normal HPDE6-C7 pancreatic cell line and the MIA-PaCa-2 and BxPC-3 pancreatic cancer cell lines. Immunohistochemistry (IHC), western blotting, and RT-qPCR were used to detect the expression of METTL3. Cell lines were transfected with siRNAs against METLL3. Proliferation, invasion, and migration were examined. The functions of METTL3 were predicted by bioinformatics analysis. In the 40 patients included, high METTL3 expression was associated with high pathological stage (P = 0.02) and high N stage (P = 0.02). Survival was better in patients with low METTL3 expression compared with those with high MTTL3 expression (P < 0.01). METTL3 and CIITA expression levels were inversely correlated (r = ?0.71, P < 0.01). RNA m6A content in tumor specimens was significantly higher than that in paracancerous specimens. METTL3 protein and mRNA levels were significantly higher in tumor specimens compared with paracancerous specimens, as well as in cancerous cell lines vs. normal cells. METTL3 knockdown in MIA PaCa-2 and BxPC-3 cells decreased RNA m6A modifications. Cell proliferation, invasion, and migration were decreased by METTL3 knockdown in cancerous cell lines. A total of 673 differentially expressed genes were identified by bioinformatics: 659 were upregulated and 14 were downregulated. In conclusion, METTL3 is probably involved in pancreatic carcinogenesis. It could eventually be a prognostic marker or a treatment target.     

糖尿病肾病患者认知功能障碍与血清β淀粉样蛋白的关系

目的 探讨糖尿病肾病(diabetic kidney disease,DKD)患者认知功能障碍与人β淀粉样蛋白1-42(human β Amyloid 1-42,Aβ1-42)的关系。方法 选取2020年5月至2021年5月在徐州医科大学附属医院内分泌科治疗的2型糖尿病(type 2 diabetes mellitus,T2DM)患者161例,根据尿白蛋白/肌酐比值(urine albumin creatine ratio,UACR)水平分为正常白蛋白尿(DM)组(n=60)、微量白蛋白尿(DKD1)组(n=58)和大量白蛋白尿(DKD2)组(n=43)。采用蒙特利尔认知评估(Montreal Cognitive Assessment,MoCA)量表评估患者认知功能。检测患者Aβ1-42、UACR、胱抑素C(Cystatin C,CysC)、估算肾小球滤过率(estimated glomerular filtration rate,eGFR),并分析上述指标与MoCA评分的关系。结果 与DM组比较,DKD1和DKD2组CysC、Aβ1-42均升高(P<0.05),eGFR降低(P<0.05)。与DKD1组比较,DKD2组CysC升高(P<0.05),eGFR降低(P<0.05)。与DM组相比,DKD1组、DKD2组MoCA评分均降低(P<0.05)。与DKD1组比较,DKD2组MoCA评分降低(P<0.05)。3组MoCA评分与Aβ1-42、UACR、CysC呈负相关(均P<0.01),与eGFR呈正相关(P<0.01)。3组Aβ1-42与UACR、CysC呈正相关(均P<0.01),与eGFR呈负相关(P<0.01)。多因素线性回归分析结果显示,Aβ1-42、UACR是影响DKD患者MoCA评分的影响因素,Aβ1-42、UACR水平越高,MoCA评分越低,患者认知功能越差。结论 DKD患者存在认知功能障碍,与Aβ1-42水平及肾损害严重程度密切相关。     

The protective effect of sophocarpine in osteoarthritis: An in vitro and in vivo study

BackgroundOsteoarthritis (OA) is a type of degenerative joint disease affecting millions of individuals worldwide. However, there are currently no great inflammatory treatments available for it. Sophocarpine (SPC), one of the key bioactive compounds derived from Sophora flavescens, has shown remarkable anti-inflammatory effects.MethodsIn this study, we evaluated the effect of SPC on preventing the progression of OA and investigated its molecular target involved. In brief, rat chondrocytes were pretreated with SPC and subsequently stimulated with IL-1β. We found that SPC reduced the production of pro-inflammatory cytokines, such as nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor alpha (TNF-α), and interleukin-6 (IL-6). SPC also inhibited the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) at both the gene and protein level. Moreover, SPC promoted the expression of anabolic factors Sox-9 and aggrecan, while inhibiting the expression of catabolic factors, such as matrix metalloproteinases 13 (MMP-13) and thrombospondin motifs 5 (ADAMTS-5) in rat chondrocytes. Mechanistically, we found that SPC inhibited nuclear factor kappa B (NF-κB) via the phosphatidylinositol 3 kinase (PI3K)/AKT pathway. The beneficial effects of SPC were also observed in vivo using a rat OA model.ConclusionsOur findings indicate that SPC may be a potential novel therapeutic in the treatment of OA.     

Application of intraoperative ultrasound in neurosurgery for hypertensive intracerebral hemorrhage

ObjectiveTo explore the clinical significance of intraoperative ultrasound in neurosurgery for hypertensive intracerebral hemorrhage (ICH).MethodsPatients with hypertensive ICH who required to undergo surgical treatment were assigned into treatment group (126 cases), who were assisted by intraoperative ultrasound, and control group (122 cases), who were not assisted by intraoperative ultrasound. In the treatment group, intraoperative ultrasound was used for real-time positioning after opening the bone flap, so as to guide the surgery. After surgery, conventional treatment and follow-up were conducted, and the statistical analysis was eventually performed to compare the therapeutic efficacy of the two groups.ResultsThe mean rate of hematoma clearance was (95.20 ± 5.18)% in the treatment group and (86.20 ± 4.85)% in the control group (P<0.05); the average time required for intraoperative hematoma clearance was 44.5±3.2 min in the treatment group and 66.3±5.1 min in the control group (P < 0.05). Finally, the treatment group was superior to the control group in terms of therapeutic efficacy and overall prognosis (P = 0.03 and 0.025, respectively).ConclusionsIntraoperative ultrasound possessed the features of precise positioning, real-time guidance, and being user-friendly, which can shorten the operation time, increase the efficacy of surgery, and improve patients’ overall prognosis, highlighting high clinical significance of intraoperative ultrasound in neurosurgery.     

非致残性缺血性脑血管事件病人氯吡格雷抵抗的临床相关因素分析

目的 探讨非致残性缺血性脑血管事件(NICE)病人氯吡格雷抵抗的临床相关因素.方法 连续收集2019年1―10月徐州医科大学附属医院神经内科收治的165例非致残性缺血性脑血管事件病人,并且给予阿司匹林联合氯吡格雷治疗,7～10 d后采用血栓弹力图检测其血小板抑制率.将二磷酸腺苷(ADP)诱导的血小板聚抑制率≤30％定义为氯吡格雷抵抗(CR).比较人口统计学、血管危险因素、实验室检查等临床资料,采用logistic多因素回归分析氯吡格雷抵抗的相关因素.结果 NICE病人,34例(20.6％)发生氯吡格雷抵抗.logistic模型分析显示,hs-CRP(OR1.143,95％CI:1.024～1.276;P=0.017)、PLR(OR1.014,95％CI:1.005～1.022;P=0.002)、Hcy(OR1.12795％CI:1.046～1.215;P=0.002)是氯吡格雷抵抗的独立相关因素.结论 hs-CRP、PLR、Hcy是非致残性缺血性脑血管事件病人氯吡格雷抵抗的独立相关因素.     

经皮椎体后凸成形术后继发椎体压缩性骨折的危险因素分析及预测模型的建立与验证

目的 ：分析经皮椎体后凸成形术（percutaneous kyphoplasty,PKP）后继发椎体压缩性骨折（subsequent vertebral compression fracture,SVCF）的危险因素,建立预测模型并进行验证。方法：回顾性分析在徐州医科大学附属医院骨科行PKP治疗的415例患者的临床资料,其中有24例（5.8%）患者在术后出现SVCF,所有患者术后随访时间16～30个月,根据术后是否出现SVCF,将患者分为SVCF组与非SVCF组。对两组患者的性别、年龄、体重指数（body mass index,BMI）、骨密度（bone mineral density,BMD）、临床合并症史（高血压病史、糖尿病史）、骨水泥注射量、骨水泥渗漏情况、初始手术节段数及手术前后的Cobb角和椎体前缘高度（anterior vertebral height,AVH）进行单因素分析。根据套索（LASSO）回归,选择与PKP术后SVCF显著相关的危险因素;随后将筛选出来的危险因素纳入多因素Logistic回归分析,最终依据多因素Logistic回归分析结果建立预测模型,并通过绘制列...