幼儿泛发性扁平黄瘤1例

患儿女，2岁，头面部黄色斑片1年半，渐累及躯干、外阴。皮肤科情况：头面部、躯干、外阴可见多发大小不一的黄色斑片，约绿豆至豌豆大小，边界清，表面光滑，未见丘疹、斑丘疹、鳞屑、萎缩、糜烂、坏死等。腹部皮损组织病理示：真皮上部可见弥漫泡沫细胞浸润，伴有淋巴细胞浸润。诊断：泛发性扁平黄瘤。     

A novel surgical technique to prevent post-enucleation conjunctival cyst:conjunctival staining with methylthioninium

Dear Editor,Conjunctival cyst of the orbit acquired from enucleation is an infrequent but serious complication;which can occur in 3%-7%of patients,more commonly after a secondary procedure;.The most common manifestations are the inability to retain the external prosthesis.     

Transplantation of an eight-organ multivisceraI graft in a patient with frozen abdomen after complicated Crohn's disease

To report an extended multivisceral transplantation (MVTx) including right kidney and ascending colon in a patient with complicated Crohn's disease (CD). A 36-year old female suffering from short bowel syndrome and frozen abdomen due to fistulizing CD after multiple abdominal operations underwent MVTx of eight organs including stomach, pancreatoduodenal complex, liver, intestine, ascending colon, right kidney, right adrenal gland, and greater omentum in November 2003. Immunosuppression consisted of alemtuzumab, tacrolimus and steroids. The patient was off parenteral nutrition by postoperative wk 3. She experienced one episode of pneumonia. The patient recovered completely and discharged 2.5 mo and was doing well 30 mo after MVTx. This is one of the very rare cases in which a complete mulitivisceral graft of eight abdominal organs was transplanted orthotopically.     

Ligustrazine inhibits high voltage-gated Ca~(2+) and TTX-resistant Na~+ channels of primary sensory neuron and thermal nociception in the rat:a study on peripheral mechanism

Objective Ligustrazine, also named as tetramethylpyrazine, is a compound purified from Ligusticum chuanxiong hort and has ever been testified to be a calcium antagonist. The present investigation was to determine the antinoci-ceptive effect of ligustrazine and, if any, the peripheral ionic mechanism involved. Methods Paw withdrawal Latency ( PWL) to noxious heating was measured in vivo and whole-cell patch recording was performed on small dorsal root ganglion (DRG) neurons. Results Intraplantar injection of ligustrazine (0.5 mg in 25μl) significantly prolonged the withdrawal latency of ipsilateral hindpaw to noxious heating in the rat. Ligustrazine not only reversibly inhibited high-voltage gated calcium current of dorsal root ganglion (DRG) neuron in dose-dependent manner with IC50 of 1.89 mmol/L, but also decreased tetrodotoxin (TTX) -resistant sodium current in relatively selective and dose-dependent manner with IC50 of 2.49 mmol/L. Conclusion The results suggested that ligustrazine could elevate the threshold of thermal nociception through inhibiting the high-voltage gated calcium current and TTX-resistant sodium current of DRG neuron in the rat.     

隐匿阴茎56例手术的护理配合

目的探讨隐匿阴茎手术过程的护理配合。方法回顾性分析我院2000年1月-2004年9月收治的56例临床资料。结果术后随访6个月-3年，效果满意。结论术前做好宣教，术中密切配合，注意无菌操作，减少术后感染及并发症，对阴匿阴茎患者的康复有着极其重要的意义。     

Poly-lactic acid and agarose gelatin play an active role in the recovery of spinal cord injury

Objective To investigate the role of poly-lactic acid and agarose gelatin in promoting the functional recovery of the injured spinal cord. Methods Poly-lactic acid ( PLA) or agarose was embedded in the space between two stumps of the hemisectioned spinal cord. Immunohistochemistry was used to show astroglia proliferation and the infiltration of RhoA-positive cells. Locomotor activity recovery was evaluated by testing the function of hindlimbs. Results Astrogli-as and RhoA labeled non-neuronal cells accumulated in the area adjacent to the implant, while the number of RhoA-positive cells was decreased dramatically in the absence of implant. Animals implanted with agarose gelatin recovered more quickly than those with PLA, concomitant with a higher survival rate of the neurons. Conclusion Both PLA and agarose gelatin benefited the recovery of spinal cord after injury by providing a scaffold for astroglia processes. Modulation of the rigidity, pore size and inner structure of PLA and agarose gelatin might make these biodegradable materials more effective in the regeneration of the central nervous system (CNS).     

一种双侧供肾大鼠肾移植模型的建立

目的 探讨同时取大鼠双侧肾脏分别移植的可行性，其目的是节省实验费用、缩短手术时间。方法 以近交系Brown-Norway大鼠为供者，同时取其双肾作为供肾，原位灌洗；近交系Lewis大鼠为受者，切除其左肾，移植供肾1只。以冠状动脉造影支架为支撑行供肾静脉与受者肾静脉端端吻合，供肾动脉与受者的腹主动脉行端侧吻合，供肾输尿管膀胱瓣与受者的膀胱吻合。受者术中预置右侧肾脏血管体外结扎线，术后3d结扎。结果 每只供鼠手术耗时约40min，热缺血时间约10S，冷缺血时间约20min。40次实验均获成功，移植肾功能正常，在不用免疫抑制剂的情况下，受者存活时间均超过7d。结论 同时取双侧肾脏分别移植给2个受者是可行的，可降低实验成本；要获得相同数量的供肾，同时取双肾的耗时较仅取单侧肾脏大大缩短。     

粘连性肠梗阻50例治疗体会

粘连性肠梗阻是普外科常见疾病之一．在肠梗阻中其发病率占首位。在临床工作中对本病若重视不够，或处理不当，常会造成严重的并发症，甚至死亡。我院从1995年10月-2005年10月共收治粘连性肠梗阻50例。现就对本病的治疗体会介绍如下。     

N-Phenylethyl Amitriptyline in Rat Sciatic Nerve Blockade

Background: The antidepressant amitriptyline is commonly used orally for the treatment of chronic pain, particularly neuropathic pain, which is thought to be caused by high-frequency ectopic discharge. Among its many properties, amitriptyline is a potent Na+ channel blocker in vitro, has local anesthetic properties in vivo, and confers additional blockade at high stimulus-discharge rates (use-dependent blockade). As with other drug modifications, adding a phenylethyl group to obtain a permanently charged quaternary ammonium derivative may improve these advantageous properties.

Methods: The electrophysiologic properties of N-phenylethyl amitriptyline were assessed in cultured neuronal GH3 cells with the whole cell mode of the patch clamp technique, and the therapeutic range and toxicity were evaluated in the rat sciatic nerve model.

Results: In vitro, N-phenylethyl amitriptyline at 10 [mu]m elicits a greater block of Na+ channels than amitriptyline (resting block of approximately 90%vs. approximately 15%). This derivative also retains the attribute of amitriptyline in evoking high-degree use-dependent blockade during repetitive pulses. In vivo, duration to full recovery of nociception in the sciatic nerve model was 1,932 +/- 72 min for N-phenylethyl amitriptyline at 2.5 mm (n = 7) versus 72 +/- 3 min for lidocaine at 37 mm (n = 4; mean +/- SEM). However, there was evidence of neurotoxicity at 5 mm.