Aerobic exercise suppresses hepatocellular carcinoma by downregulating dynamin-related protein 1 through PI3K/AKT pathway

ObjectiveExercise, as a common non-drug intervention, is one of several lifestyle choices known to reduce the risk of cancer. Mitochondrial division has been reported to play a key role in the occurrence and transformation of hepatocellular carcinoma (HCC). This study investigated whether exercise could regulate the occurrence and development of HCC through mitosis.MethodsBioinformatics technology was used to analyze the expression level of dynamin-related protein 1 (DRP1), a key protein of mitochondrial division. The effects of DRP1 and DRP1 inhibitor (mdivi-1) on the proliferation and migration of liver cancer cells BEL-7402 were observed using cell counting kit-8, plate colony formation, transwell cell migration, and scratch experiments. Enzyme-linked immunosorbent assay, Western blot and real-time polymerase chain reaction were used to detect the expression of DRP1 and its downstream phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) pathway. A treadmill exercise intervention was tested in a nude mouse human liver cancer subcutaneous tumor model expressing different levels of DRP1. The size and weight of subcutaneous tumors in mice were detected before and after exercise.ResultsThe expression of DRP1 in liver cancer tissues was significantly upregulated compared with normal liver tissues (P < 0.001). The proliferation rate and the migration of BEL-7402 cells in the DRP1 over-expression group were higher than that in the control group. The mdivi-1 group showed an inhibitory effect on the proliferation and migration of BEL-7402 cells at 50 μmol/L. Aerobic exercise was able to inhibit the expression of DRP1 and decrease the size and weight of subcutaneous tumors. Moreover, the expression of phosphorylated PI3K (p-PI3K) and phosphorylated AKT (p-AKT) decreased in the exercise group. However, exercise could not change p-PI3K and p-AKT levels after knocking down DRP1 or using mdivi-1 on subcutaneous tumor.ConclusionAerobic exercise can suppress the development of tumors partially by regulating DRP1 through PI3K/AKT pathway.     

烧伤后耳廓瘢痕畸形分级标准的设定

目的 探讨烧伤后耳廓瘢痕畸形的严重程度的分级方法及对应的手术方式选择.方法 对北京积水潭医院烧伤整形科2008年1月至2017年12月期间165例烧伤后耳廓瘢痕畸形住院病例,进行回顾性统计分析.并按照病人耳廓瘢痕范围,耳廓位置与颅耳角有无异常,耳轮、耳垂、耳甲腔、耳屏等耳廓结构的缺损情况,耳廓结构的辨识度等几个方面,进行四级评级分类.并分析手术方式与烧伤后耳廓瘢痕畸形分级的相关性.结果 一级轻度耳廓瘢痕畸形74例,二级中度耳廓瘢痕畸形51例,三级中重度耳廓瘢痕畸形27例,四级重度耳廓瘢痕畸形13例.一级轻度耳廓瘢痕畸形最常采用瘢痕切除术,二级中度耳廓瘢痕畸形最常采用瘢痕切除+植皮术,三级中重度耳廓瘢痕畸形最常采用瘢痕切除+局部皮瓣转移+植皮术,四级重度耳廓瘢痕畸形最常采用瘢痕切除+皮瓣转移+植皮+耳廓成形术.结论 本研究首次建立烧伤后耳廓瘢痕畸形的分级标准,有利于畸形严重程度判断,并能指导手术方式的选择.此分级标准简单易行,适合在临床工作中推广应用.     

闭合性胫骨骨折兔模型的建立与评估

目的：探讨改良设计的三点弯曲骨折装置用于建立闭合性胫骨骨折兔模型的效果。方法：选取6月龄SPF级健康雄性新西兰兔40只,体质量2.5~3.0 kg,制备闭合性胫骨骨折兔模型,并于术后6周进行模型验证。预造模组5只,造模前未行临时外固定,后以改良设计三点弯曲骨折装置进行骨折;正式造模组35只,造模前行穿针及夹板外固定,后以改良设计三点弯曲骨折装置进行骨折。于术后2 h及4、6周行影像学、组织病理学评估骨折模型情况及愈合进程。结果：造模后2 h,预造模组呈不同程度的斜行骨折且断端明显移位;正式造模组除1只粉碎性骨折,2只弯曲蝶形骨折,2只未显示明显骨折线外,其余均呈简单横行及斜行骨折,断端无明显移位。根据判定标准,模型成功率为85.71%。造模后4周,实验兔固定针及夹板位置良好,骨折对位对线良好,骨折线已模糊不清,骨折端周围可见大量连续骨痂生长,骨痂密度较高。造模后6周,镜下见骨折处大量粗大的新生骨小梁,边缘成骨细胞附着并见少量巨噬细胞,膜内成骨区域为编织骨阶段,骨折处髓腔已部分再通,骨痂处于吸收塑性阶段,可见大量破骨细胞。X线显示骨折线几乎消失,髓腔部分已通,周围见外骨痂减少,骨痂处于塑形期,骨皮质连续。提示骨折模型呈二期愈合。结论：改良三点弯曲骨折装置可建立稳定的闭合性胫骨骨折兔模型,且操作简便,符合骨折愈合相关基础研究对闭合性骨折模型的要求。     

二补助育汤对反复体外受精-胚胎移植失败患者子宫内膜超声学指标的影响

目的观察二补助育汤对反复体外受精-胚胎移植(IVF-ET)失败患者子宫内膜超声学指标的影响,探讨该方药对子宫内膜容受性的改善作用。方法采用自身前后对照试验,纳入32例优胚移植2次及2次以上均失败、除外胚胎质量因素的反复IVF-ET失败患者,且中医辨证为肾虚血瘀。观察二补助育汤治疗前后患者子宫内膜超声学指标的变化情况,以及再次IVF-ET的妊娠结局。结果 32例患者中1例失访、1例因未坚持治疗剔除,最终30例患者纳入统计分析。患者治疗后子宫内膜厚度较治疗前增加(P<0.001),A型子宫内膜患者数量、子宫内膜下存在血流的患者数量均较治疗前增加(P<0.001),Salle评分较治疗前明显增加(P<0.001),双侧子宫动脉搏动指数(pulse index, PI)、阻力指数(resistance index, RI)和左侧子宫动脉收缩期峰值/舒张期峰值(S/D)较治疗前明显降低(P<0.05,P<0.001)。再次行IVF的胚胎种植率和临床妊娠率分别为40%、33.33%。结论二补助育汤能增加子宫动脉血流,从子宫内膜厚度、分型、血供等方面改善子宫内膜容受性,利于胚胎着床,从而提高再次IVF-ET成功率。     

基于PET探讨自发性高血压大鼠肝阳上亢证模型脑功能变化*

目的利用正电子发射计算机断层显像（positron emission computed tomography,PET）技术,探究自发性高血压大鼠（spontaneously hypertensive rats,SHRs）肝阳上亢证脑功能成像的改变。方法 取8只SHRs作为模型组,10只正常清洁级SD大鼠作为对照组。模型组给予附子汤灌服28 d造模后,将两组大鼠分别进行氟18脱氧葡萄糖（18F-FDG）PET脑功能成像扫描,应用SPM2图像分析软件对两组数据进行双样本t检验,得到SHRs肝阳上亢证脑内葡萄糖代谢变化的区域。结果 与对照组相比,模型组葡萄糖代谢减低脑区有右侧间脑、中脑顶盖、丘脑、基底核、两侧大脑半球、尾状核、纹状体、屏状核、尾状核(P<0.05);而葡萄糖代谢增高的脑区有右侧大脑半球、联合纤维、胼胝体(P<0.05)。结论 PET可以直观显示自发性高血压肝阳上亢证功能改变的特定脑区,为临床早期诊断,防治高血压导致的认知功能障碍提供了可靠依据。     

Efficacy and safety of Xinglouchengqi decoction for acute ischemic stroke with constipation: study protocol for a randomized controlled trial

Objective

To investigate the efficacy and safety of Xinglouchengqi (XLCQ) decoction in treatment of acute ischemic stroke with constipation.

Tetrandrine and arsenic trioxide synergistically inhibit proliferation of HCC1937 triple negative breast cancer cells

Objective

To evaluate the effects of tetrandrine plus arsenic trioxide on HCC1937 cells, a triple negative breast cancer cell line, and to explore possible mechanisms.

基于叶天士医案探讨阳虚体质胃阳虚证的经方论治

阳虚体质是九种基本体质类型之一,脾胃阳虚是阳虚体质的一种主要证型,在临床多种脾胃病证治中广泛出现。历代医家或以中阳统称脾胃阳气,或重脾阳而略胃阳,但是脾、胃的生理病理和治法方药各不相同。叶天士倡导脾胃分治,且尤其注重体质。本文从阳虚体质角度,对叶天士以经方辨治胃阳虚不同汤证的病机、证候、治法、方药的差异进行分析探讨,并结合具体医案详细阐释了阳虚体质胃阳虚不同层次的治法,如"通补胃气"的大半夏汤法,"通补胃阳"的附子粳米汤法等。从辨体-辨病-辨证相结合的角度,对胃阳虚证辨治规律进行总结,以供脾胃病的临床诊疗借鉴。     

王成祥教授动态论治慢性阻塞性肺疾病经验

慢性阻塞性肺疾病(COPD)是呼吸系统常见的慢性疾病,近年来其发病率仍呈增长趋势,造成巨大的社会经济负担,中西医综合治疗可以有效改善临床症状、减少急性发作次数。王成祥教授经过多年的临证探索,将本病分为稳定期,急性加重初期与进展期。虚证以气阴两虚多见,痰饮壅肺、瘀阻肺络是COPD的基本病机,痰饮化热是急性加重的病机演变,痰热蕴肺是急性加重期病情的重要转折点。治疗上根据不同的分期,从辛散表邪、温药和饮、痰气并治、解表清里、清热化痰、益气养阴等多个方面为着眼点,全程重视调理气机、活血化瘀、搜邪通络,为临床治疗COPD提供了一定的参考。     

从“伏邪”理论论治反复呼吸道感染

"伏邪"是导致呼吸道感染反复发作、缠绵难愈的内因之一。根据"伏邪"理论,反复呼吸道感染病位在肺,病机为肺卫不固、肺失宣肃、肺气不足、邪伏于肾。该病的病机核心为"邪伏正虚",治疗应以"扶正透邪"为基本原则。根据该病标本虚实不同,处以不同方剂,旨在为反复呼吸道感染的临床辨治提供新的思路。