不同表面处理的种植入早期表面沉积物的分析研究

目的：比较两种不同表面处理的种植体在植入早期表面沉积物的差异及其骨组织反应。方法：将表面经双重酸-双氧水热处理和双重酸处理的种植体分别植入兔子胫骨内，然后，采用带能谱分析的扫描电镜观测2、4、8周带种植体的骨组织。结果：植入2周后在两组种植体表面均沉积富含钙磷层；4周时这层结构大部分消失，但双重酸-双氧水-热处理组可见较多的骨生成细胞附着在种植体表面并形成新骨。8周时两组种植体表面均附着一些新骨，但以双重酸-双氧水-热处理组相对较多。结论：两组种植体在植入早期表面均可形成富含钙磷层。     

海藻糖在气管低温保存中的保护机制

目的探讨海藻糖在气管低温保存中的保护作用和机制。方法新鲜配制4组保存液，其中：Ⅰ组LPD；Ⅱ组LPD 10％DMSO；Ⅲ组LPD 0．15M海藻糖；Ⅳ组LPD 10％DMSO 0．15M海藻糖。切取SD大鼠气管后立即分别放入含上述4种溶液的冻存管，在程序降温仪降至-80℃后投入液氮中保存。20d后对气管标本进行HE染色和Bcl-2、Pax蛋白检测(免疫组化)，并将其异位移植到Wistar大鼠腹腔，15d后取出移植气管，观察组织学变化。结果4种保存液低温保存气管20d后，Ⅲ组和Ⅳ组气管结构完整，软骨细胞Pax蛋白表达较低，尤其Ⅳ组保存效果最好，同种异体异位移植后生长良好。各组Bcl-2蛋白表达无明显区别。结论在气管低温保存中海藻糖的保护作用主要是通过对软骨细胞的保护实现的，抑制软骨细胞Pax基因的表达是其中的保护机制之一。海藻糖和DMSO合用保护作用更好。     

牡荆油的β-环糊精包合工艺研究

目的优选牡荆油的β-环糊精(β-CD)包合工艺.方法采用正交试验法,以挥发油的包合率和1.8-桉叶素的含量为指标,对油与β-CD比例、包合温度、包合时间、油与水量的比例等4个因素进行了考察.结果最佳包合工艺为:牡荆油与β-CD的比例为1:8、包合温度为50℃、包合时间为1.5 h、油与水量的比例为1:70.结论优选得到的工艺简单、可行,挥发油的包合率可达80%以上.     

Evaluation of a preoperative multimedia information program in surgical oncology.

AIM: We report on the design, validation and evaluation of a DVD for patient information in a department of surgical oncology. PATIENTS AND METHOD: DVDs provided the patient with information about the anatomy, surgical techniques and post-operative complications on digestive cancers, oral cavity and breast tumours. After surgery a questionnaire was sent to the patients in order to evaluate their level of satisfaction and opinion regarding the pre-operative information they had been given. RESULTS: One hundred and eight patients were invited to watch the DVD. Seventy-one percent of the patients considered that viewing the DVD had been positive and encouraging and 83% of all the patients would recommend its use. Among the 14 patients who experienced complications, only 21% declared having been well informed by the DVD and only 12% considered they were better prepared to face those complications. CONCLUSIONS: DVD based information systems are valuable and acceptable to patients, but the presentation of complications needs to be improved.     

HIV蛋白酶抑制剂研究进展

艾滋病 (acquiredimmunodeficiencysyndrome,AIDS)是由人免疫缺陷病毒(humanimmunodeficiencyvirus,HIV)感染导致人体免疫机能缺陷,而易于发生机会性感染和肿瘤的临床综合征 [1]。在过去的20多年里造成2 000多万人死亡,目前全世界艾滋病病毒感染者已达4 000万左右 [2]。自     

卟啉及其类似物在HPLC固定相中的应用

介绍了卟啉及其类似物衍生固定相的特征和制法,综述了这类固定相在HPLC中的应用和分离机制.     

虎掌南星炮制工艺研究

目的 :探讨虎掌南星炮制加工中的矾水浓度、浸泡时间及矾水温度对虎掌南星饮片物质基础的影响。方法 :虎掌南星饮片研制 ,HPLC指纹图谱的定量分析 ,多变量多因素分析。结果 :白矾浓度及其溶液体积对HPLC指纹图谱未见有影响。而温度对其有显著影响 ,且呈明显梯度变化。结论 :温热矾水浸泡将加速药用物质流失。应尽量在春秋季节的温度环境炮制虎掌南星。     

反义ClC-3寡核苷酸促进thapsigargin诱导的PC12细胞凋亡

目的　研究反义ClC 3寡核苷酸对thapsigargin诱导的细胞凋亡的影响。方法　蛋白免疫印迹法检测ClC 3蛋白的表达 ;MTT法检测反义ClC 3寡核苷酸对TG诱导的细胞生长的影响 ;形态学方法、流式细胞仪和DNA琼脂糖凝胶电泳观察和分析PC12细胞在转染ClC 3反义寡核苷酸后 ,TG诱导的细胞形态、DNA含量的变化和DNA断裂的情况。结果　与对照组相比 ,反义ClC 3寡核苷酸呈浓度和时间依赖性地抑制ClC 3蛋白的表达 ;使TG诱导的PC12细胞存活率降低 ,凋亡程度加强 ,差异有显著性 ,而正义及随义ClC 3寡核苷酸对此没有影响。结论　反义ClC 3寡核苷酸对TG诱导的PC12细胞凋亡有促进作用。     

肝细胞癌NF κ-B表达与CT表现的相关性

目的 探讨核因子（NF κ-B）在肝细胞癌组织中的表达与CT影像特点间的关系。方法 收集华西医院有完整临床资料和全肝CT扫描图像并经手术完整切除的肝癌组织标本患者80例,采用免疫组织化学方法染色定量分析癌组织中NF κ-B表达情况和在不同的临床参数中表达的差异;再分别以肿瘤坏死、血供、瘤体直径和瘤周子灶的有无分四组,探讨NF κ-B表达量在不同CT影像特征中有无差异。结果 CT检测80例患者中肝癌细胞核内NF κ-B表达阳性有74例（92.5%）。肝细胞癌NF κ-B表达与临床参数,包括性别、肝炎病史无相关性,瘤体大小与NF κ-B表达无统计学差异。CT检测肿瘤血供、坏死及瘤周子灶的有无与NF κB表达相关（P＜0.05）,富血供肝细胞癌NF κ-B表达较乏血供者明显增高,而瘤体有坏死者较未发生坏死者低,瘤周出现子灶的病例NF κ-B表达也增高,且差异有统计学意义（P＜0.05）。结论 肝癌血供、坏死及瘤周子灶CT影像特点与NF κ-B水平密切相关。瘤体血供丰富、瘤内无坏死、瘤周伴有子灶的肝癌组织NF κ-B表达水平明显增高,NF κ-B表达水平量可能与肿瘤的生物学特性,疾病的转归和预后相关,CT检测可为肝癌的治疗及预防评估提供重要依据。     

Duchenne�ͽ����Լ�Ӫ�������ٴ��ͻ������97������

??Objective??To analyze the clinical and gene mutation characteristics of Duchenne progressive muscular dystrophy ??DMD????summarize the gene mutation hotspots in 97 cases and to explore the correlation between clinical manifestations and genotype. Methods??Totally 97 patients with DMD diagnosed by genetic examination from January 2014 to 2018 were collected and analyzed. The clinical manifestations??serum analyses and gene mutation results were analyzed. Results??The main clinical manifestations of 97 patients??96 boys?? were feeding difficulties?? increased muscle enzyme and limb weakness. Creatine kinase??CK???? lactate dehydrogenase??LDH?? and aspartate aminotransferase??AST?? muscle enzymes were significantly increased. By combining deep-sequencing technologies??the large deletions of DMD gene mutation was in 62 cases??63.92%????there were 11 cases??11.34%?? of large duplication mutation??and 24 cases??24.74%?? of point mutation. All of the mutations could occur in any position in the DMD gene??but there were two hot spots??45 cases were located in the central region gene exon 45??55??72.58% ????12 cases of deletion mutation were located in 5’exon end exon 2??19 area??19.35%??. Conclusion??The main clinical manifestations of the DMD children are feeding difficulty??increased muscle enzyme and limb weakness. The patients with significantly increased muscle enzyme should receive a timely defection of DMD gene.