图书馆做好读者服务工作之管见

图书馆要做好读者服务工作,只有加强图书馆专业队伍建设,丰富读书活动,优化馆藏结构,创新信息服务,树立“读者第一,服务至上”的理念,才能适应社会的发展,最大限度地满足读者的需求。     

Expression of Anion Exchanger 1 Sequestrates p16 in the Cytoplasm in Gastric and Colonic Adenocarcinoma

p16^INK4A (p16) binds to cyclin-dependent kinase 4/6 and negatively regulates cell growth. Recent studies have led to an understanding of additional biologic functions for p16; however, the detailed mechanisms involved are still elusive. In this article, we show an unexpected expression of anion exchanger 1 (AE1) in the cytoplasm in poorly and moderately differentiated gastric and colonic adenocarcinoma cells and in its interaction with p16, thereby sequestrating the protein in the cytoplasm. Genetic alterations of p16 and AE1 were not detectable. Forced expression of AE1 in these cells sequestrated more p16 in the cytoplasm, whereas small interfering RNA-mediated silencing of AE1 in the cells induced the release of p16 from the cytoplasm to the nucleus, leading to cell death and growth inhibition of tumor cells. By analyzing tissue samples obtained from patients with gastric and colonic cancers, we found that 83.33% of gastric cancers and 56.52% of colonic cancers coexpressed AE1 and p16 in the cytoplasm. We conclude that AE1 plays a crucial role in the pathogenesis of gastric and colonic adenocarcinoma and that p16 dysfunction is a novel pathway of carcinogenesis.     

老年心力衰竭患者外周血红细胞膜脂流动性的变化及与心功能的相关性

目的观察红细胞膜脂流动性（LFU）在老年充血性心力衰竭（CHF）中的变化及其意义。方法选择CHF患者40例,正常对照者30例,用荧光分光光度计偏振技术测定外周血红细胞LFU。结果CHF组红细胞LFU明显低于正常对照组（P<0.01）;心功能越差,LFU越低（P<0.05和P<0.01）。结论红细胞LFU在一定程度上反映了CHF程度。     

Frequent premature ventricular contractions induced by itraconazole.

Itraconazole is widely used to treat onychomycosis because of its significant therapeutic effects. An otherwise healthy 30-year-old man treated with itraconazole developed frequent premature ventricular contractions (PVC). He presented with a dry cough and palpitation. The results of 12-lead electrocardiography (ECG) were essentially normal, but Holter ECG revealed 17,484 (18%) uniform PVC, including 4 short runs among 96,930 beats/day. Another Holter ECG after withdrawing itraconazole revealed 1,032 premature atrial contractions but no PVC. The corrected QT interval was 0.39 s without itraconazole, 0.41 s with itraconazole, and 0.43 s when multiple PVC were documented. Itraconazole inhibits the fungal cytochrome P450 that is involved in fungal cell membrane formation, interrupts human cytochrome P450A4 in the liver and causes adverse interactions with various drugs such as antiarrythmics, but its cardiac side-effects are obscure. Both patients and physicians should be aware that itraconazole can cause PVC as a side-effect.     

血管内栓塞结合显微手术治疗颅内动脉瘤临床研究

目的应用显微手术夹闭、血管内栓塞和栓塞后手术夹闭3种治疗方法，探讨治疗颅内破裂动脉瘤的安全有效方案。方法显微手术瘤颈夹闭30个动脉瘤，栓塞34个动脉瘤，栓塞后夹闭15个动脉瘤。结果夹闭组30个完全夹闭，无复发，死亡率6％（2／30）。栓塞组完全闭塞率70．6％（24／34），复发率17．6％（6／34），死亡率11．8％（4／34）。栓塞后手术组15个完全夹闭，无复发，死亡率6．7％（1／15）。治疗结束用GOS评价，1个月后3组良好率分别为80．0％、79．4％和80．0％；半年后良好率分别为90．0％、88．2％和86．7％。结论显微手术瘤颈夹闭术仍然是治疗破裂动脉瘤的有效方法，具有1次治疗彻底和复发率低的优势，并可作为栓塞失败的补救手段。     

针刺推拿中药综合治疗颈性眩晕疗效观察

目的观察针刺推拿中药综合治疗颈性眩晕的疗效。方法设综合组80例、电针组42例、推拿组68例和中药组36例,进行疗效比较分析。结果综合组有效率为93.8%,电针组有效率为73.8%,推拿组有效率为86.8%,中药组有效率为69.4%,综合组有效率与其他几组比较差异均有统计学意义（P〈0.05）。结论采用电针、推拿、中药相结合的综合疗法治疗颈性眩晕集诸单一疗法之精华,避免单一疗法的局限性,可提高有效率。     

真皮-脂肪颗粒混合液注射移植修复面部凹陷性组织缺损

目的探索一种新的面部凹陷性组织缺损的修复方法。方法将真皮颗粒和脂肪颗粒混合制成真皮-脂肪颗粒混合液,用2mm脂肪抽吸针注射移植修复面部凹陷性组织缺损。结果本组18例,17例1次填充成功,仅1例因缺损面积过大而补充填充1次,全部病例伤口均Ⅰ期愈合,无感染,外形明显改善。结论真皮-脂肪颗粒混合移植修复面部凹陷性组织缺损,手术简单易行,术后吸收少,效果较好,值得推广。     

两种微创方法治疗股骨颈骨折的临床对照试验

目的分别应用三针锁针加压器外固定和空心拉力钉内固定疗法治疗股骨颈骨折,探讨股骨颈骨折最佳治疗方法.方法应用三针锁针加压器外固定治疗股骨颈骨折63例,其中男24例,女39例;年龄55～89岁,平均(64.5±3.2)岁;Garderl Ⅰ型2例,Ⅱ型15例,Ⅲ型38例,Ⅳ型8例.应用空心拉力钉内固定治疗63例,其中男29例,女34例;年龄45～76岁,平均(62.2±2.9)岁;Garden Ⅰ型4例,Ⅱ型24例,Ⅲ型28例,Ⅳ型7例.对其疗效进行分析.结果126例除2例死亡外均得到随访.115例愈合,其中10例股骨头坏死.外固定组愈合58例,股骨头坏死4例,死亡1例;内固定组愈合57例,股骨头坏死6例,死亡1例.根据Harris功能评定标准评价疗效,外固定组62例中优24例,良26例,可8例,差4例,优良率80.65%;内固定组62例中优23例,良27例,可6例,差6例,优良率80.65%.Harris评分外固定组平均(80.40±1.21)分,内固定组平均(79.14±1.47)分,两组Harris评分比较差异无统计学意义(P＞0.05).结论采用内外固定治疗股骨颈骨折疗效无明显差异,但外固定创伤小、费用低、可早期离床;而采用拉力钉内固定器医疗成本高,卧病时间相对较长,且需二次手术取内固定钉.