miR-30c Impedes Glioblastoma Cell Proliferation and Migration by Targeting SOX9

miR-30c has been acknowledged as a tumor suppressor in various human cancers, such as ovarian cancer, gastric cancer, and prostate cancer. However, the role of miR-30c in glioblastoma (GBM) needs to be investigated. In our study, we found that the expression of miR-30c was significantly downregulated in GBM tissues and cell lines. We found that overexpression of miR-30c inhibited cellular proliferation of GBM cells in vitro and in vivo. More GBM cells were arrested in the G₀ phase after miR-30c overexpression. Moreover, we showed that miR-30c overexpression suppressed the migration and invasion of GBM cells. Mechanistically, we found that SOX9 was a direct target of miR-30c in GBM cells. Overexpression of miR-30c inhibited the mRNA and protein levels of SOX9 in GBM cells. Moreover, there was a negative correlation between the expression of miR-30c and SOX9 in GBM tissues. Finally, we showed that restoration of SOX9 in GBM cells reversed the proliferation, migration, and invasion of GBM cells transfected with miR-30c mimic. Collectively, our results demonstrated that miR-30c suppressed the proliferation, migration, and invasion of GBM cells via targeting SOX9.     

新抗喘药物的研究——茶碱衍生物及卤代苯乙醇胺化合物的合成

本文根据β_2-受体兴奋剂和茶碱类药物的作用机制,结合两类药物的基本结构和构效关系,运用新药设计中的拼合原理及生物电子等排原理,设计扦合成了两类共十六个尚未见于文献报导的化合物。经初步药理实验证明均具有抗哮喘作用,其中I_(5-8)活性较高,且对心脏副作用轻微,可望成为治疗哮喘的新药。     

Diagnosis of double-chambered left ventricle by echocardiogram and cardiac magnetic resonance imaging: A rare case in an adult

Double-chambered left ventricle (DCLV) is a very rare malformation which is congenital. In most cases, the left ventricle (LV) is divided into two parallel chambers by a septum or aberrant muscular structure, with fewer superior–inferior arrangement. Here, we present the case of an asymptomatic 25-year-old man who was diagnosed with superior–inferior arrangement DCLV on transthoracic echocardiography and cardiac magnetic resonance (CMR). DCLV generally does not cause serious outcomes. Owing to absence of any symptoms, no treatment was provided, and the patient was regularly followed up.     

斑点追踪成像对心尖肥厚型心肌病左室收缩功能评价

目的应用斑点追踪成像技术(STI)评价心尖肥厚型心肌病病人的左心室心肌整体和局部收缩功能。方法选取心尖肥厚型心肌病病人(ApHCM组)35例、健康对照者(正常对照组)40例,应用STI测量左心室各节段的纵向应变,以及整体心肌的纵向应变、应变率、达峰时间,并比较两组各参数的差异。结果与正常对照组比较,ApHCM组左心室各节段纵向应变减低(t=2.05~7.27,P<0.05),左心室整体纵向应变、应变率减低(t=8.81、3.52,P<0.05)。两组达峰时间比较差异无显著性(P>0.05)。结论 STI能够准确评价心尖肥厚型心肌病病人左心室心肌收缩功能。     

Polymorphism,phase transformation and energetic properties of 3-nitro-1,2,4-triazole

We report the preparation, analysis, and phase transformation behavior of polymorphs of 3-nitro-1,2,4-triazole. The compound crystallizes in two different polymorphic forms, Form I (tetragonal, P4₁2₁2) and Form II (monoclinic, P2₁/c). Analysis of the polymorphs has been investigated using microscopy, differential scanning calorimetry, in situ variable-temperature powder X-ray diffraction, and single-crystal X-ray diffraction. On heating, Form II converts into Form I irreversibly, and on further heating, decomposition is observed. In situ powder X-ray diffraction studies revealed that Form II transforms to Form I above 98 °C, indicating that Form I is more stable than Form II at high temperature. Form II of 3-nitro-1,2,4-triazole has good detonation properties (V_det = 8213 m s⁻¹, P_C–J = 27.45 GPa), and low sensitivity (IS > 40 J, FS = 360 N, ESD = 29 J), which make it a competitive candidate for use as a new insensitive explosive.

On heating, Form II converts into Form I irreversibly, which indicates Form I is more stable at higher temperatures.     

新型口服抗凝药对心力衰竭合并左心室血栓患者的疗效研究

目的:探讨新型口服抗凝药(NOAC)用于心力衰竭合并左心室血栓患者的疗效。方法:入选2017年1月至2020年6月在首都医科大学附属北京安贞医院心力衰竭中心门诊和住院患者中明确诊断为心力衰竭合并左心室血栓患者100例,分别给予NOAC(NOAC组,42例)或维生素K受体拮抗剂(VKA组,58例)治疗,3个月后复查经胸超声心动图。结果:两组患者在年龄、性别、心血管危险因素和基础疾病、左心室射血分数等方面的差异均无统计学意义(P均>0.05)。在NOAC组,利伐沙班治疗者30例,达比加群治疗者12例,3个月时血栓完全溶解率为69.0%。所有VKA组患者均使用华法林治疗,血栓完全溶解率为63.8%,与NOAC组相比差异无统计学意义(P>0.05)。3个月期间,两组均未发生栓塞事件和致死性大出血事件,仅VKA组有2例胃肠道出血,对症治疗后即好转。结论:NOAC可考虑作为心力衰竭合并左心室血栓患者的治疗药物。     

急性冠状动脉综合征患者血清基质金属蛋白酶-2与C-反应蛋白水平

目的:在血清学水平上探讨C反应蛋白(CRP)、基质金属蛋白酶2(MMP2)与冠状动脉粥样硬化斑块破裂的关系,评价CRP、MMP2水平作为粥样硬化斑块破裂的血清学指标的意义。方法:分别利用酶联免疫吸附法及散射比浊法对40例急性冠状动脉综合征(ACS)组、40例稳定型心绞痛(SAP)组、40例非冠心病者(正常对照组)外周血血清CRP、MMP2水平进行测定。结果:ACS组、SAP组血清CRP、MMP2水平明显高于正常对照组,差异具有统计学意义(P<0.01),ACS组血清CRP、MMP2水平明显高于SAP组,差异具有统计学意义(P<0.01);经相关性检验血清CRP和MMP2水平呈明显正相关(P<0.01)。结论:血清CRP、MMP2水平可反映斑块稳定性,可作为检测斑块破裂的血清学指标。     

肠道菌群与脑-肠-肾轴在慢性肾病中的研究进展

随着慢性肾病(chronic kidney disease,CKD)发病率不断增加,肾病已成为全球性重大公共卫生问题之一。据2017世界肾脏大会发布的最新全球肾病健康报告显示,全球每10人当中就有1人患有肾脏疾病[1]。近年来,越来越多的证据表明,慢性肾病患者中存在肠道菌群失调及肠道屏障功能受损的情况,且慢性肾病患者比非慢性肾病患者有更高的患痴呆和认知障碍的风险。本文就肠道菌群和脑-肠-肾轴在慢性肾脏疾病中的作用做一综述,希望通过调节肠道菌群作为靶点,来延缓慢性肾脏病及其并发症的进展。     

光照治疗在精神疾病患者中的研究进展

临床上针对精神疾病患者尚无确切有效的治疗和康复措施。光照治疗作为一种安全、便利、低成本的非药物治疗方法,在精神疾病患者中的应用受到了广泛关注。目前,国外对光照治疗的研究较为多见,但国内将光照治疗应用于精神科领域的相关报道较少。本文旨在对光照治疗的相关内容以及在精神疾病患者中的应用现状及效果等进行总结,以期为促进精神疾病患者的康复提供参考。