肱骨近端锁定接骨板结合抗骨质疏松药物治疗老年骨质疏松性肱骨近端粉碎性骨折的疗效观察

目的:探讨肱骨近端锁定接骨板(LPHP)结合抗骨质疏松药物治疗老年骨质疏松性肱骨近端粉碎性骨折(OP-CFPH)的疗效价值。方法:抽选我院2012年1月-2014年2月收治的45例老年OP-CFPH患者,采用随机分层法分为对照组(n=22例,采用三叶形普通钢板治疗)和观察组(n=23例,采用LPHP+入院后抗骨质疏松治疗),比较两组手术参数、术后肩关节Neer评分及并发症发生率的差异。结果:观察组手术时间、术中出血量、术后引流量及术后骨折愈合时间均显著低于对照组的,组间差异具有统计学意义(P0.05);观察组术后肩关节Neer评分优良率明显高于对照组(P0.05);术后观察组并发症发生率低于对照组,但比较差异无统计学意义(P0.05)。结论:LPHP联合抗骨质疏松治疗老年OP-PHF具有创伤小、疗效好的优点,有利于骨折愈合,是目前治疗该类骨折一种理想的方法。     

肱骨近端锁定钢板治疗肱骨近端粉碎性骨折的疗效分析

目的:观察肱骨近端锁定钢板治疗肱骨近端粉碎性骨折的临床疗效.方法:肱骨近端骨折82例,随机分为两组.治疗组(n=41)用肱骨近端锁定钢板内固定,对照组(n=41)用三叶草钢板内固定.随访6-36个月,平均(18.6-± 2.3)月,观察治疗后骨折愈合情况、肩关节功能恢复情况,记录骨折愈合时间、患肩活动度.采用Neer评分法评定疗效.观察手术并发症及安全性.结果:治疗组满意率87.81％,对照组满意率70.73％.两组满意率相比较,差异有统计学意义(X2=3.976,P＜0.05).治疗组治疗后外展和外旋活动度与对照组同期相应指标比较;差异有统计学意义(P＜0.05).两组并发症的发生率相比较,差异有显著意义(X2=4.895,P＜0.05).结论:肱骨近端锁定钢板治疗肱骨近端粉碎性骨折疗效肯定,安全性好.     

锁定加压钢板与三叶草钢板内固定治疗老年肱骨近端骨折比较分析

目的:探讨锁定加压钢板与三叶草钢板内固定治疗老年肱骨近端骨折的临床效果.方法:老年肱骨近端骨折分别采用锁定加压钢板治疗44例,三叶草钢板治疗48例,随访观察并比较二者手术时间、术中出血量、术后引流量、住院时间、肩关节Neer评分、术后并发症等指标.结果:二种治疗方法在Neer评分优良率和住院时间方面无明显差异(P>0.05).但在手术时间、术中出血量、术后引流量和术后并发症,锁定加压钢板优于三叶草钢板(P<0.05).结论:锁定加压钢板内固定方法可靠,骨折愈合率高,创伤小,并发症少.     

微创锁定接骨板与传统切开复位内固定术治疗肱骨近端骨折的临床疗效比较

目的:探讨微创锁定接骨板与传统切开复位内固定术治疗肱骨近端骨折的临床疗效。方法:选取89例肱骨近端骨折患者,根据手术方法不同分为两组,观察组(45例)给予微创锁定接骨板治疗,对照组(44例)给予传统切开复位内固定治疗,比较两组手术时间、住院时间、骨折愈合时间、术中出血量、术后1个月Neer和Constant-Murley评分。结果:观察组患者手术时间、住院时间、骨折愈合时间均明显短于对照组,术中出血量少于对照组(P0.05)。术后1个月,观察组Constant-Murley各项评分及总分均显著优于对照组(P0.05);按Neer评分,观察组优良率为91.1%,明显高于对照组(68.1%,P0.05)。结论:与传统切开复位内固定术相比,微创锁定接骨板能更好,安全性更高,可更快更有效地促进肱骨近端骨折患者肩关节功能的恢复。     

肱骨近端加压锁定钢板与传统钢板治疗肱骨近端骨折的临床疗效比较

目的比较肱骨近端加压锁定钢板与传统钢板治疗肱骨近端骨折的临床治疗效果。方法选取我院2014年1月~2015年1月骨外科门诊收治的肱骨近端骨折患者60例,随机分为治疗组和对照组各30例。治疗组采用肱骨近端加压锁定钢板治疗,对照组采用传统钢板治疗,比较两组的Neer功能评分、骨折愈合时间、并发症发生情况。结果两组患者Neer功能评分与治疗前比较均有明显提高,治疗组提高水平明显优于对照组;而且治疗组骨折愈合时间、并发症发生情况均低于对照组,两组比较差异具有统计学意义(P0.05)。结论肱骨近端加压锁定钢板相比传统钢板治疗肱骨近端骨折的临床疗效更优,促进了患者的骨折愈合速度,降低了并发症发生率,具有临床推广和应用价值。     

小切口入路锁定钢板治疗老年肱骨近端骨折的临床疗效观察

目的:探讨小切口入路锁定钢板治疗老年肱骨近端骨折的疗效。方法:选取了80例肱骨近端骨折患者,按随机数字表法分为两组,对照组(39例)给予三角肌入路锁定钢板,观察组(41例)给予小切口入路锁定钢板治疗,通过观察并记录围手术期指标,术前术后3个月的Neer评分,术后24 h的凝血指标,随访3个月期间的并发症发生情况,评价小切口入路锁定钢板治疗老年肱骨近端骨折的疗效。结果:观察组手术、住院、骨折愈合所需时间均短于对照组(P0.05),两组术中出血量相比,无统计学差异(P.05),术前观察组与对照组Neer评分相比,无统计学差异(P0.05),术后3个月,观察组与对照组Neer评分均明显增加,且观察组高于对照组(P0.05)。术前两组凝血指标无明显差异,术后24 h,两组国际标准化比率(International Normalized Ratio,INR)相比无明显变化,血浆凝血酶原时间(prothrombin time,PT),活化部分凝血活酶时间(activated partial thromboplastin time,APTT)均明显降低(P0.05)。对照组血浆纤维蛋白原(Plasma fibrinogen,FIB)水平明显升高,观察组FIB术前术后24 h无明显变化(P0.05),术后24 h,两组患者PT,APTT,INR相比无统计学差异(P0.05)观察组FIB水平明显低于对照组(P0.05)。随访3个月期间,两组均未出现切口感染、血管神经损伤等严重并发症。结论:小切口入路锁定钢板对老年肱骨骨折具有较好的治疗效果,能显著改善患者肩关节功能,对血液系统影响较小,术后并发症少,值得临床推广使用。     

不同内固定方法对肱骨近端骨折的预后影响

目的:探讨不同内固定方法对肱骨近端骨折的预后影响。方法:选取90例因肱骨骨折入院治疗的患者的临床资料进行回顾性分析,按照内固定方法的不同将所有患者分为A组和B组。其中A组为44例,均采用锁定加压钢板治疗;B组为46例,均采用解剖型钢板治疗。比较两组患者术后并发症的发生情况,并且采用Neer评分系统评定肱骨近端骨折治疗后的肩关节功能等级。结果:获得有效随访资料共79份,占87.8%。其中锁定加压钢板组获得有效随访的数量为39,占43.3%;解剖型钢板组获得有效随访的数量为40,占44.4%。根据Neer评定标准,A组患者的肩关节功能Neer评定优良率为92%,显著高于B组87.5%,两组之间差异无统计学意义(x~2=0.131,P0.05)。结论:锁定加压钢板内固定法对肱骨近端骨折预后明显优于解剖型钢板,更有利于患者早期功能锻炼的进行和肩关节功能恢复。     

锁定接骨板治疗肱骨近端骨折

目的:探讨锁定钢板治疗肱骨近端骨折的临床疗效。方法:2005年3月～2010年3月应用锁定钢板(包括肱骨近端锁定钢板或肱骨近端锁定内固定系统)治疗肱骨近端骨折43例,按Neer分型2部分骨折20例,3部分骨折19例,4部分骨折4例。随访评定包括X线片、Neer肩关节功能评分标准。结果:43例患者获得平均14.2个月(9～21个月)临床随访,骨折全部愈合,愈合平均时间10.4周(8～12周)。根据Neer肩关节功能评分标准:优19例,良19例,可5例,优良率88.4%。结论:锁定钢板治疗肱骨近端骨折具有手术创伤小、操作方便、固定可靠的优点,允许早期功能锻炼,疗效满意。     

肱骨近端加压锁定钢板与传统钢板治疗肱骨近端骨折的临床疗效比较

目的:针对肱骨近端骨折探讨肱骨近端加压锁定钢板手术方法与传统钢板手术方法的术中及预后情况。方法:根据自愿原则,采用2013年5月至2014年5月来我院就诊的60例临床经x线平片检测确诊为肱骨近端骨折的患者为研究对象,随机分为2组每组30人,进行随机化的临床实验性探究。本实验所得数据采用spss 17.0软件经行数据分析,规定p0.05差异有统计学意义[4]。结果:实验组手术时间102.2±3.6min术中出血量79.±1.1ml术中并发症23.4%;对照组手术时间120.3±5.5min术中出血量108.8±2.6ml术中并发症50.9%,以上结果差异有统计学意义。实验组优良率86.7%,对照组优良63.3%率,以上结果差异有统计学意义。结论:针对肱骨近端型骨,肱骨近端加压锁定钢板手术方法比传统钢板手术方法的术中情况及预后情况都有明显优势,值得在临床进行推广。     

采用同种异体腓骨植骨重建肱骨近端内侧柱的临床应用及疗效

目的:探讨同种异体腓骨移植重建肱骨近端内侧柱联合锁定钢板治疗肱骨近端骨折的临床疗效。方法:回顾性分析2011年3月至2013年9月于我院行同种异体腓骨移植联合锁定钢板治疗肱骨近端骨折患者38例。根据Neer分型:三部分骨折26例,四部分骨折12例;随访期间测量肱骨头内翻角度、肱骨头高度;患肩功能评分采用Constant肩关节评分标准、美国肩肘协会评分系统(ASES)及加州大学肩关节评分系统(UCLA),同时记录患者并发症。结果:患者随访时间平均15.5±1.8个月;末次随访Constant肩关节评分平均89.0±3.2分;美国肩肘协会评分系统(ASES)评分为平均81.2±14.5分;加州大学肩关节评分系统(UCLA)平均27.6±5.3;根据UCLA评分系统,患者术后优良率为89.4%。患侧肩关节前屈、外展、外旋及内旋运动范围分别是143±20°、138±9°、44±12°、42±9°。影像学结果显示:末次随访肱骨头高度平均丢失1.9 mm,颈干角度平均为128±16°。根据Paavolainen方法,末次随访优30例、良7例、差1例。结论:同种异体腓骨移植重建肱骨近端骨折内侧柱,术中联合肱骨近端锁定钢板能有效支撑肱骨头,预防肱骨头塌陷及螺钉穿出,短期临床疗效满意。     

A Unique Protease Cleavage Site Predicted in the Spike Protein of the Novel Pneumonia Coronavirus (2019-nCoV) Potentially Related to Viral Transmissibility

正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases     

Curcuminoids as inhibitors of thioredoxin reductase: A receptor based pharmacophore study with distance mapping of the active site

Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable potent antiproliferative synthetic drugs.     

Comparative morphology of the carpel in the Liliaceae: Hewardieae, Petrosavieae, and Tricyrteae

The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle.     

Enterovirus 71 3C proteolytically processes the histone H3 N-terminal tail during infection

Highlights
1. The N-terminal tail of histone H3 is specifically cleaved during EV71 infection.
2. Viral protease 3C is identified as a protease responsible for proteolytically processing the N-terminal H3 tail.
3. Our finding reveals a new epigenetic regulatory mechanism for Enterovirus 71 in virus-host interactions.     

Detection of EBV and HHV6 in the Brain Tissue of Patients with Rasmussen’s Encephalitis

Rasmussen’s encephalitis (RE) is a rare pediatric neurological disorder, and the exact etiology is not clear. Viral infection may be involved in the pathogenesis of RE, but conflicting results have reported. In this study, we evaluated the expression of both Epstein-Barr virus (EBV) and human herpes virus (HHV) 6 antigens in brain sections from 30 patients with RE and 16 control individuals by immunohistochemistry. In the RE group, EBV and HHV6 antigens were detected in 56.7% (17/30) and 50% (15/30) of individuals, respectively. In contrast, no detectable EBV and HHV6 antigen expression was found in brain tissues of the control group. The co-expression of EBV and HHV6 was detected in 20.0% (6/30) of individuals. In particular, a 4-year-old boy had a typical clinical course, including a medical history of viral encephalitis, intractable epilepsy, and hemispheric atrophy. The co-expression of EBV and HHV6 was detected in neurons and astrocytes in the brain tissue, accompanied by a high frequency of CD8⁺ T cells. Our results suggest that EBV and HHV6 infection and the activation of CD8⁺ T cells are involved in the pathogenesis of RE.     

Perinatal Vertical Transmission of Chikungunya Virus in Ruili,a Town on the Border between China and Myanmar

正Dear Editor,Chikungunya virus (CHIKV), an arbovirus in the family of Togaviridae, genus Alphavirus, is transmitted by the A.aegyptii or A. albopictus mosquito, and causes disease in humans characterized by fever, rash, and arthralgia (Silva and Dermody 2017; Suhrbier 2019). It was first reported in 1953 in Tanzania, and caused only a few outbreaks and sporadic cases in Africa and Asia in last century. However, in the epidemic in 2004, CHIKV acquired mutations that conferred enhanced transmission by the A. albopictus mosquito(Schuffenecker et al. 2006). Since then, it has successively caused outbreaks in Africa, the Indian Ocean, South East Asia, the South America, and Europe (Zeller et al. 2016).     

Development of a Novel Reverse Transcription Loop-Mediated Isothermal Amplification Method for Rapid Detection of SARS-CoV-2

In conclusion, the novel visual RT-LAMP assay is a simple, rapid, and sensitive approach for detection of SARS-CoV-2, and it is ready for application in primary care and community hospitals or health care centers, and even patients' own houses in response to the current SARS-CoV-2 epidemic because the assay does not require sophisticated equipment and skilled personnel. Furthermore, it is also ready to be used in fields for screening samples from wild animals and environments to facilitate the identification of potential intermediate hosts that mediate the cross-species transmission of SARS-CoV-2 from bats to humans.