锁定跟骨钢板治疗新鲜跟骨骨折

目的 探讨采用锁定跟骨钢板治疗新鲜跟骨关节内移位骨折的临床疗效.方法 2004年10月至2006年10月,治疗34例男性闭合性跟骨关节内移位骨折患者,年龄19～42岁,平均34岁;左足14例,右足20例;高处坠落伤22例,车祸伤12例.受伤至手术时间7～21天,平均13天.术前均对伤足摄正、侧位X线片及跟骨的CT轴位片.根据Sanders分型,Ⅱ型16例,Ⅲ型18例.采用扩大外侧入路对34例患者进行手术,骨折复位后利用锁定跟骨钢板完成骨折内固定.结果 28例患者获得随访,随访时间6～40个月,平均20个月.切口均甲级愈合.B(o)hler角由术前平均7.41°±4.08°改善至术后第7天的29.74°±5.56°和术后3个月的30.00°±5.53°;Gissane角由术前平均163.71°±9.31°改善至术后第7天的122.59°±14.11°和术后3个月的125.85°±19.31°.骨折均愈合,愈合时间为6～12周.术后无一例患者发生撞击或神经、血管损伤等并发症,未出现骨折移位或内固定失败等情况.术前美国足踝外科学会(American Orthopaedic Foot & Ankle Society,AOFAS)评分系统的踝-后足评分为(17.68±9.34)分,术后3个月和6个月分别为(74.79±4.01)分和(74.28±17.92)分.结论 应用锁定跟骨钢板治疗新鲜跟骨骨折,可以获得满意的临床效果,利于患者的功能恢复.

Abstract：

Objective To evaluate the clinical outcome of operative management of displaced intraarticular fractures of the calcaneus using locking plates. Methods From October 2004 to October 2006, 34patients with close displaced intraarticular fractures of the calcaneus were fixed with Calcaneal locking Plates through the extensive lateral approach. The right foot was involved in 20 patients. The mean age was 34 yesrs with a range of 19 to 42 years. Accordiing to Sanders' classification system, there were 16 patients in style Ⅱ and 18 in style Ⅲ The mean interval between injury and operation was 13 days Standard reduction and fixation techniques were performed to realign all components of the intra-articular calcaneal fracture using a locking calcaneal fracture plate. The result were evaluated with AOFAS (American Orthopaedic Foot & Ankle Society) ankle-hindfoot scale. Results Twenty-eight patients were followed up. The follow-up duration ranged from six to forty months, with the mean of twenty months. angle and were measured at, The average B(o)hler angle was 29° and 30° and the average Gissane was 122° and 125° seven days and three months after operation. Bone union was achieved in all cases. All incisons had healed smoothly. No patient sustained lateral impingement syndrome or soft tissue complications The mean AOFAS scores that was measured three months and six months after operation was 74. Conclusion The application of the calcaneal locking plates through extended lateral approach is proved to be an effective treatment for displaced intra-articular calcaneal fracture, offering the combination of good reduction and early rehabilitation.     

9-硝基喜树碱及其脂质体对HepG2、L02细胞周期和凋亡作用的研究

目的 研究9-硝基喜树碱及其脂质体对人肝癌细胞株HepG2和人正常肝细胞L02细胞周期、凋亡的影响及其可能的作用机制.方法 HepG2、L02细胞用含不同浓度9-硝基喜树碱及其脂质体的培养液孵育后,利用MTT法测定细胞活性,流式细胞术检测细胞周期及细胞凋亡,WesternBlot验证周期相关蛋白和凋亡相关蛋白的表达变化.结果 9-硝基喜树碱及其脂质体对两种细胞生长呈时间和剂量依赖性抑制.药物处理后S期和G2/M期细胞明显增多,浓度大于0.1 μmol/L时24 h后HepG2细胞完全阻滞于S期;0.1 μmol/L孵育72 h后,超过95%HepG2细胞阻滞于G2/M期.药物对细胞凋亡的诱导作用也呈明显的剂量和时间依赖关系.Western Blot显示:Bax、Caspase3表达增高,Cyclin A、Cdk2、Cyclin E、Bcl-2表达减低.与L02相比,HepG2细胞对药物更加敏感.结论 9-硝基喜树碱及其脂质体可以通过调控细胞周期和诱导凋亡有效抑制细胞生长,其对肿瘤细胞的抑制作用强于正常肝细胞.9-硝基喜树碱脂质体体外抗肿瘤效果略强于9-硝基喜树碱单体.

Abstract：

Objective To investigate the modulating effects and explore their mechanism of 9-nitrocamptothecin and its liposomes to induce apoptosis and inhibit cell cycle in HepG2 and L02 cell lines. Methods Cells were incubated with 9-nitrocamptothecin(9NC) or with 9-nitrocamptothecin liposomes for 24 h, 48 h and 72 h, then, the cell viability was measured via MTT assay; cell cycle and apoptosis was evaluated by flow cytometry after stained by PI and Annexin V-PE/7AAD. Additional, Western Blot was used to evaluate the expression of cell cycle and apoptosis related protein. Results Both cells viability were apparently inhibited by the 9-nitrocamptothecin and 9-nitrocamptothecin liposomes, the inhibitory effect showed a time-dependent and dose-dependent manner. Both S and G2/M phases arrest were observed after incubated with drugs. HepG2 cell was completely arrested in S phase when 9NC concentration over than 0. 1 μmol/L after incubation for 24 h, while more than 95% cells arrested in G2/M phase when 9NC concentration is 0. 1 μmol/L after incubation for 72 h. Apoptosis induction effect also showed a time-dependent and dose-dependent manner. Western Blot results showed the expression of Bax and Caspase-3 were upregulated while Cyclin A, Cdk2, Cyclin E and Bcl-2 were downregulated. More importantly, the compounds were more cytotoxic to the cancer cell lines than to the normal liver cell. Conclusions 9-nitrocamptothecin and 9-nitrocamptothecin liposomes can potently inhibit cell growth via regulation of cell cycle and induction of apoptosis, and this effect was preferentially in cancer cell. Inhibitory of 9-nitrocamptothecin liposomes was slightly better than the 9-nitrocamptothecin.     

尖锐湿疣病理发展过程的研究

目的:从组织学角度探讨尖锐湿疣condylomata acuminate(CA)的基本病变、发生发展过程、病因及病理特征的关系.方法:收集350例病理诊断为CA的病例,观察其病理形态学特征,部分病例做原位杂交、P53与S-100蛋白检测及TEM观察.结果:①CA主要是薄层表皮增殖单位(epidermal proliferation unit)的慢性病毒(HPV6、11)性增生性炎,病变特点是含HPV表皮细胞柱的特殊水变性(CA细胞群),乳头状曾殖、分化及凋亡,三者协同作用是本病的发病基础.②HPV感染DNA见于水变性表皮细胞柱的核中,偶见于胞浆及细胞的间质中.③潜伏在表皮内的HPV及宿主免疫反应低是本病慢性发展及反复发作的原因.结论:CA是表皮增殖单位的慢性病毒性增生性炎.     

8例胰腺类癌的临床病理分析

Carcinoids of the pancreas are exceedingly rare tumors that originate from the enterochromaffin cells of the gastroenteropancreatic neuroendocrine system. According to a recent report, pancreatic carcinoids are found in only 0.58% （79/13 715 cases） of the entire carcinoid group. To date, very limited information regarding the detection and diagnosis of this entity has been reported in the available literature. Although pancreatic carcinoid tumors grow slowly and show an indolent clinical behavior, they are potentially malignant. Due to the late onset of clinical symptoms and delayed diagnosis of the tumor, there was a high incidence of distant metastases that hampered long-term survival for many patients, leading to an unfavorable overall prognosis.     

运动减轻孤独症神经炎症的可视化分析

目的 探索近10年来孤独症谱系障碍(ASD)-小胶质细胞研究领域的热点及未来发展趋势,对ASD的神经炎症以及运动减轻ASD症状的免疫调控机制及可能的通路进行综述。方法 从Web of Science核心数据库中检索2012年1月至2021年12月ASD-小胶质细胞相关研究。采用CiteSpace 5.8.R3软件对纳入文献的年度发文量、高频关键词及关键词聚类等进行可视化分析。结果与结论 共纳入783篇文献,发文量总体呈上升趋势。神经炎症是ASD发病机制相关研究的热点,其中小胶质细胞的异常激活、炎性细胞因子水平的改变是ASD发生、发展的重要因素。运动是改善ASD的重要干预方法,可能通过减轻神经炎症或调控小胶质细胞介导的炎症通路实现。     

高效液相色谱法测定补骨脂中三种黄酮类成分的含量

目的 :建立补骨脂中三种黄酮类成分含量测定方法。方法 :采用高效液相色谱法分析补骨脂中补骨脂甲素和补骨脂异黄酮的含量。色谱柱 :汉邦 Lichrosphore C1 8(2 5 0 mm× 4.6mm ,5μm) ;流动相 :乙腈 -水 (4∶6) ;流速 1.0 ml/ min;检测波长 :2 79nm(0～ 3 0 min) ,2 47nm (3 0～ 45 min) ;进样量 2 0μl。补骨脂查耳酮 :色谱柱 :汉邦 L ichrosphore C1 8(2 5 0 mm× 4.6mm,5 μm) ;流动相 :甲醇 -水 (85∶ 15 ) ;流速 1.0 ml/ min;检测波长 3 87nm ;进样量 2 0μl。结果 :平均加样回收率为 98.2 % ,RSD为 1.3 % ,0 .0 489～ 0 .3 91μg,r=0 .9999(n=7)。结论 :该方法适合于测定补骨脂中黄酮类成分的含量 ,应用该方法对不同产地的补骨脂中 3种成分含量进行了测定。不同产地中黄酮类成分的含量存在很大差异 ,对补骨脂黄酮类成分进行含量测定应成为补骨脂质量控制的重要环节。     

Short-term effect of high volume hemofiltration on treatment of critically ill associated with acute kidney injury

目的 探讨高容量血液滤过(HVHF)用于危重症合并急性肾损伤(AKI)治疗的近期疗效.方法 120例危重症合并AKI患者行HVHF治疗,监测治疗前后患者生命征及血电解质、血糖、肾功能变化,同时分别在治疗前后对患者行简化急性生理评分(SAPSⅡ)、急性肾小管坏死-个体严重程度指数(ATN-ISI)评分,并进行统计学分析.结果 治疗结束后患者一般情况稳定,平均动脉压(MAP)显著上升,肾功能指标显著好转,ATN-ISI及SAPSⅡ评分显著下降.结论 HVHF用于危重症合并AKI患者的治疗有良好的近期疗效.     

HPLC测定肾药Ⅲ号结肠定位片中芦丁、大黄素和大黄甲素的含量

目的 建立肾药Ⅲ号结肠定位片的质量标准.方法 采用HPLC法测定了肾药Ⅲ号中芦丁、大黄素和大黄素甲醚的含量.结果 芦丁、大黄素和大黄素甲醚在一定浓度范围内线性关系良好,芦丁、大黄素和大黄素甲醚线性范围分别为2.7～54.0 μg/mL(r2＝0.999 9)、1.1～22.0 μg/mL(r2＝0.999 3)和1.17～21.94 μg/mL(r2＝0.999 2),平均加样回收率分别为99.04％ (RSD＝2.04％,n＝6)、101.21％(RSD＝1.01％,n＝6)和94.7(RSD＝1.5％,n＝6).结论 此方法简单准确,重现性良好,能有效控制肾药Ⅲ号结肠定位片的质量.     

2型糖尿病并局限性硬皮病一例

免疫因素损害是糖尿病发生、发展的重要因素之一.既往认为1型糖尿病的发生和免疫密切相关,但是2型糖尿病也同样存在免疫功能紊乱[1],不少免疫复合物的沉积参与肾脏等脏器的损害[2];临床上,国外曾报道多例青少年的1型糖尿病患者合并一种自身免疫性疾病——局限性硬皮病[3-5].但是成年人中2型糖尿病伴发局限性硬皮病在国内外报道甚少,现报道1例,以便于增加糖尿病合并皮肤硬化的鉴别诊断,加强2型糖尿病并发其他自身免疫性疾病的认识.     

不同麻醉方法对重症颅脑损伤患者脑氧代谢的影响

目的 探讨三种不同麻醉方法对重症颅脑损伤患者脑氧代谢的影响.方法 选择2011年3月至2013年3月收治的45例重症颅脑损伤患者,按随机数字表法分为丙泊酚静脉麻醉组(A组)、七氟烷吸入麻醉组(B组)与静吸复合麻醉组(C组),每组15例.分别于麻醉前、插管即刻、插管后2min、手术开始后10min及30 min、术毕记录平均动脉压(MAP)、心率(HR),于麻醉诱导前、诱导完成即刻、手术开始后30 min及1h、术毕抽取桡动脉和颈内静脉球都血液行血气分析,计算各时间点的颈内静脉血氧饱和度(SjvO2)、桡动脉-颈内静脉血氧含量差(Da-jvO2)以及脑氧摄取率(CERO2).结果 三组患者手术开始后30 min、手术开始后1h及术毕SjvO2均显著高于麻醉诱导前(A组:0.662±0.077、0.689±0.067、0.685±0.066比0.623±0.083;B组:0.661±0.074、0.681±0.072、0.661±0.069比0.598±0.092;C组:0.715±0.072、0.743±0.070、0.713±0.075比0.631±0.078),差异有统计学意义(P＜0.05),而手术开始后30 min、手术开始后1h及术毕Da-jvO2、CERO2均显著低于麻醉诱导前[A组Da-jvO2:(41.2±6.3)、(41.6±8.1)、(41.2±6.3) ml/L比(49.2±9.2)ml/L,CERO2:(33.0±1.9)％、(32.7±2.0)％、(32.3±1.9)％比(36.0±2.3)％;B组Da-jvO2:(41.8±5.6)、(40.2±6.9)、(41.8±5.6) ml/L比(51.3±8.6) ml/L,CERO2:(33.2±2.1)％、(33.0±2.6)％、(32.8±2.1)％比(34.7±3.1)％;C组Da-jvO2:(39.5±6.8)、(38.7±7.0)、(40.2±6.8) ml/L比(48.8±9.7) ml/L,CERO2:(31.8±2.9)％、(31.5±3.1)％、(32.9±2.3)％比(35.1±2.9)％],差异有统计学意义(P＜0.05),且C组CERO2降低更为显著,差异有统计学意义(P＜0.05).三组不同时间点MAP、HR比较差异均无统计学意义(P＞0.05).结论 丙泊酚静脉麻醉与七氟烷吸入麻醉均能有效地降低重症颅脑损伤患者围手术期脑氧代谢率,而且两者复合麻醉的效果更佳,血流动力学稳定.