咪唑立宾对大鼠肾小球系膜细胞增殖的抑制作用

目的探讨咪唑立宾（MZ）对肾小球系膜细胞增殖的抑制作用及其对细胞周期蛋白依赖性蛋白激酶抑制物p27^kip1表达的影响。方法大鼠系膜细胞同步后分为无血清组、20％FCS刺激组、20％FCS＋MZ组。四甲基偶氮唑盐（MTT）法检测细胞数。BrdU标记法检测S期细胞。流式细胞仪检测细胞周期。Western印迹检测p27^kip1蛋白的表达。结果MZ可抑制20％FCS刺激所致的系膜细胞增殖，呈剂量依赖性。与20％FCS刺激组比较，20％FCS＋MZ组S期细胞的百分比显著降低[（10．28±1．26）％比（21．04±5．38）％，P〈0．05]。MZ可改善由20％FCS刺激诱导的GO／G1期细胞减少[（83．53±2．50）％比（71．15±1．25）％]和S期细胞增加[（12．22±1．22）％比（23．19±0．38）％，P〈0．051。20％FCS刺激后p27^kip1蛋白表达显著下降，MZ上调p27^kip1蛋白表达。结论MZ能够有效抑制系膜细胞增殖，作用时相在G1／S期转化，其抑制系膜细胞增殖的作用部分是通过上调p27^kip1蛋白表达实现的。     

主动脉扩张病腔内微创治疗新进展

1991年Parodi首次报道腹主动脉瘤腔内隔绝术,1994年Dake首次报道胸主动脉瘤腔内隔绝术.国内腔内隔绝术首次应用于腹主动脉瘤(1996)和胸主动脉夹层动脉瘤(1998)治疗,也已经有十年左右的时间.在这短短十年里,主动脉扩张性疾病的腔内微创治疗如雨后春笋般蓬勃发展,开展单位越来越多、病例数越来越多、病例难度越来越大、技术越来越成熟、相关认识系统化深入.     

MRI of combination treatment of embolic stroke in rat with rtPA and atorvastatin

To test the hypothesis that combination treatment of embolic stroke with rtPA and statins improves the efficacy of thrombolytic therapy in rats. Rats subjected to embolic MCA occlusion (MCAo) were randomized into control (n = 10) and treatment (n = 9) groups. Four hours after MCAo, a combination of rtPA and atorvastatin (treatment) or saline (control) was administered. MRI measurements were performed on all animals at 2 h, 24 h and 48 h after MCAo. The patency of cerebral microvessels was examined using fluorescent microscopy. MRI images showed complete blockage of the right MCA and a reduction of CBF in the territory supplied by the MCA 2 h after MCAo for all animals. By 48 h after stroke, MRI showed that the decreased lesion size, elevated CBF and increased incidence of recanalization were found in treated rats compared with the control rats. The combination treatment significantly increased microvascular patency (16.3 +/- 5.5% vs. 12.4 +/- 3.5%, of field-of-view) and reduced the infarct volume (23.1 +/- 9.6% vs. 38.8 +/- 13.3%, of hemisphere). These data demonstrate that the co-administration of rtPA and atorvastatin 4 h after ischemia is efficacious and is reflected by the MRI indices of recanalization of the MCA, reduction of secondary microvascular perfusion deficits and reduction of the ischemic lesion.     

脑fMRI观察电针神门及三阴交穴治疗失眠机制

目的利用fMRI技术探讨电针神门、三阴交穴治疗失眠的机制。方法对7名失眠患者（失眠组）及6名健康志愿者（正常对照组）分别在无任何刺激状态下行静息扫描、电针刺激双侧神门和三阴交穴下行BOLD-fMRI扫描,观察两组受试者的激活脑功能区。采用SPM基本模式中的单样本t检验进行统计分析。结果两组受试者均可见脑岛（BA13）明显激活。但在失眠组,右侧丘脑腹前核、右侧壳核、左内侧苍白球、左侧中央前回（BA9）、双侧尾状核头部被特异性地激活。结论电针神门、三阴交穴治疗失眠的机制可能是电针刺激激活了丘脑腹前核、尾状核、壳核、内侧苍白球、丘脑网状核以及其他睡眠中枢,整合传入和传出的信息,调节睡眠;并可通过不同的通路调畅情志,舒缓压力,达到助眠作用。     

Diagnosis and surgical treatment of solid pseudopapillary neoplasm of the pancreas: analysis of 24 cases

Background

Our aim was to summarize our experience with the diagnosis and surgical treatment of solid pseudopapillary neoplasm (SPN) of the pancreas to provide a reference for the management of this rare condition.

Methods

We collected and analyzed retrospective data on the clinical presentation, laboratory investigations, radiologic imaging, pathology and operative details of patients with SPN of the pancreas diagnosed between February 2001 and December 2009.

Results

In all, 23 of 24 patients were women, and the mean age of all patients was 31 years. The most common clinical presentation was vague abdominal pain. Abdominal imaging showed solid or solid cystic masses in the pancreas, mostly in the tail or head of the gland. All patients were treated surgically. There were no postoperative deaths. After follow-up ranging from 4 to 109 months (median 68 mo), 20 of 22 patients who underwent curative resection were alive with no evidence of disease recurrence. Of the 2 patients with R1 resections, 1 died 42 months after surgery, whereas the other underwent a second operation and was alive after 36 months’ follow-up.

Conclusion

Solid pseudopapillary neoplasm of the pancreas is a relatively indolent tumour. The initial diagnosis of SPN of the pancreas is suggested by radiologic imaging findings but should be considered in the context of clinical and histopathologic characteristics. We advocate for complete surgical resection once SPN is diagnosed.     

5-ALA荧光膀胱镜的应用对非肌层浸润性膀胱癌早期复发率的影响

目的：探讨5-氨基乙酰丙酸（5-ALA）荧光膀胱镜的应用对非肌层浸润性膀胱癌术后早期复发率的影响。方法：将90例非肌层浸润性膀胱癌患者随机分为两组,每组45例,分别在白光膀胱镜和5-ALA荧光膀胱镜下行TURBt,术后6周所有患者均行5-ALA荧光膀胱镜检查以观察肿瘤复发情况,并对复发肿瘤行二次TURBt。结果：行二次TURBt后,90例患者中,25例（27．7％）发现有肿瘤发生,其中自光膀胱镜组18例（40％）,荧光膀胱镜组7例（15．5％）,两组间比较差异有统计学意义（P=0．05）。结论：5=ALA荧光膀胱镜对膀胱肿瘤的诊断和治疗具有较高价值,可以显著降低非肌层浸润性膀胱癌术后早期复发率。     

结核性腹膜炎的CT诊断(附11例报告)

目的：探讨结核性腹膜炎的ＣＴ表现。材料与方法：搜集１１例有ＣＴ检查资料的结核性腹膜炎病例进行分析,其中５例经手术病理证实,６例由抗痨治疗效果显著而确诊。结果：１１例结核性腹膜炎的ＣＴ表现如下：（１）腹水９例,其中７例表现为高密度腹水（ＣＴ值大于２０ＨＵ）,３例表现为腹腔包裹性积液;（２）壁腹膜光滑增厚７例,轻度不规则增厚１例,其中２例增强扫描时壁腹膜有强化;（３）１１例肠系膜均有改变,表现为增厚、结节状或“污点”状影;（４）大网膜饼形增厚、结节状或“污点”状改变５例。结论：ＣＴ对诊断结核性腹膜炎有较大价值,其主要鉴别诊断为腹膜转移癌。     

关节镜下同种异体肌腱双束法重建前交叉韧带

目的探讨同种异体肌腱移植重建关节内韧带,双束韧带即前内束（AM）、后外束（PL）重建前交叉韧带（ACL）,完善韧带修补重建的条件,以期达到ACL重建后膝关节的生物力下曲率运动的均衡和对膝关节回旋稳定的调控。方法对67例ACL患者应用同种异体肌腱重建ACL。股骨髁侧椭圆形隧道,应用Arthrax公司提供的横钉固定肌腱法固定;胫骨侧建立ACL—AM和ACL—PL双隧道,挤压钉固定。结果67例均获随访,时间12—36（18．4±3．8）个月,Lysholm评分：术前（34．47±1．5）分,术后3个月（78．35±3．4）分,术后6个月（81．88±3．3）分,术后12个月（87．76±2．1）分,术后18个月（89．70±3．5）分。有关节软骨损伤者,影响术后Lysholm评分。结论同种异体肌腱可以满足韧带受区的要求,双束ACL重建符合膝关节韧带4连杆曲率生物运动模式,膝关节回旋稳定度高。手术操作简单,效果良好。