Pneumoscrotum After Blunt Chest Trauma

Pneumoscrotum, the accumulation of air inside the scrotum, is a rare complication associated with blunt chest trauma. We report a case of severe subcutaneous emphysema, pneumothorax, pneumomediastinum, pneumopericardium, and pneumoscrotum after blunt chest trauma in a 44-year-old man. He presented with progressive swelling of the neck that descended to the chest, abdomen, both legs, and scrotum. Radiography and computed tomography of the chest and abdomen confirmed the diagnosis of a tracheal injury complicated by severe subcutaneous emphysema, pneumothorax, pneumomediastinum, pneumopericardium, and pneumoscrotum. Primary repair of the tracheal injury was performed, and he was weaned successfully from the ventilator by day 5. He was discharged on day 7.     

Why is hypercalciuria absent at diagnosis in some children with ATP6V1B1 mutation?

We try to explain why hypercalciuria is absent at diagnosis in some children with an ATP6V1B1 mutation. A 5-month-old girl presented with distal renal tubular acidosis (dRTA) and sensorineural hearing loss. Direct sequencing of the ATP6V1B1 genes disclosed a new homozygous mutation (452 delT) in exon 13. In particular, an absence of hypercalciuria and a normal level of parathyroid hormones were noted. After alkaline therapy, the signs of nephrocalcinosis improved on ultrasound during follow-up. After a review of the literature regarding patients with ATP6V1B1 gene mutations, a young age seemed to be an important factor for normocalciuria. The probable mechanism of normocalciuria and a dynamic mode of calcium excretion in patients with dRTA is proposed. The determinant factors include the degree of systemic acidosis, urine pH, genetic polymorphisms, age, dietary factors, and volume status. Low sodium intake may be a major determinant of normocalciuria in these patients. It is suggested that hypercalciuria is usually absent at diagnosis of dRTA in young infants. Blood pH, plasma bicarbonate concentration, urinary citrate levels, and growth catch-up may be better indicators of adequate alkali therapy in normocalciuric children. Volume contraction, low salt content in infant formula, and alkaline urine in young infants are likely to account for the increased calcium reabsorption.     

TKA胫骨平台冠状位倾斜度与临床结果

目的研究TKA患者膝关节胫骨平台冠状位倾斜度与临床结果之间的关系。方法回顾性分析我科自2004年1月至2005年2月期间TKA的骨关节炎病例261例。按术后胫骨平台假体内外翻情况分为3组：A组（外翻组）、B组（中立组）和C组（内翻组）。结果 A、B、C三组间在患者性别比例、年龄、体重指数、止血带时间、术后引流量、术后住院时间方面无显著差异。术前膝关节畸形情况各组间无显著差异。各组间术前ROM及HSS评分无显著差异。在术后2周时的膝关节活动度方面,A组与B、C两组间均存在显著差异（P〈0.01）,B组与C组间存在显著差异（P〈0.05）。术后2周时HSS评分,A组与B、C两组间均存在显著差异（P〈0.05）,但B组与C组间无显著差异。术后2年HSS评分A、B、C三组间无显著差异。A组中有1例、B组中有2例,C组中有2例伤口脂肪液化;B组中有3例、C组中有1例术后出现患肢小腿肌间静脉血栓。结论 TKA术后冠状位倾斜度与术前因素、手术因素及手术并发症之间无显著相关性。TKA术后力线对近期临床结果可能有显著影响。通过进一步康复锻炼可弥补力线对长期临床结果的影响。     

超脉冲CO_2激光治疗眼睑缘痣细胞痣的疗效观察

目的：探讨超脉冲CO2激光治疗眼睑缘痣细胞痣的疗效与安全性。方法：使用超脉冲CO2激光治疗仪在眼罩保护,局部注射麻醉下,采用能量18～35mJ/cm2,频率20～30Hz治疗眼睑缘痣细胞痣42例。结果：随访3个月后其中39例皮损完全消退,无复发,3例皮损明显缩小,残留芝麻大小黑点,再次治疗后皮损消失。总有效率100%,患者满意,无不良反应及副作用。结论：采用超脉冲CO2激光治疗眼睑缘痣细胞痣操作简单、安全,效果显著,无副作用。     

顺铂联合唑来膦酸对肺癌A549细胞增殖的影响及其机制

目的 观察顺铂联合唑来膦酸对肺癌A-549细胞增殖的影响并探讨其作用机制.方法 以噻唑蓝(MTT)比色法观察顺铂联合唑来膦酸对A549细胞增殖的影响,以Annexin-V/PI双染法检测细胞凋亡,逆转录-聚合酶链反应(RT-PCR)检测DNA损伤检查点蛋白调节因子1(MDC1)mRNA的表达.结果 顺铂联合唑来膦酸对A549细胞增殖的抑制率(39.16±4.94)％高于顺铂(16.87±2.50)％、唑来膦酸(19.66±4.57)％;联合用药诱导A549细胞的凋亡率(32.30±0.50)％较顺铂(23.90±2.46)％、唑来膦酸(18.87±3.04)％上升;联合用药后A549细胞MDC1 mRNA的相对表达水平(0.134 ±0.037)较顺铂(0.356±0.033)、唑来膦酸(0.208 ±0.040)下降,差异均有统计学意义(P＜0.05).结论 顺铂、唑来膦酸可抑制肺癌A549细胞的增殖,诱导其凋亡;顺铂联合唑来膦酸抑制A549细胞的增殖具有协同作用;其协同作用可能与下调MDCl mRNA表达有关.     

辛伐他汀对人肺泡Ⅱ型细胞缺氧复氧损伤的逆转

目的 探讨辛伐他汀在体外对肺泡Ⅱ型细胞( ATⅡ)缺氧复氧损伤的保护作用及其机制.方法以人ATⅡ来源的A549细胞株为对象,应用化学性缺氧模拟剂CoCl2建立体外缺氧复氧损伤模型.研究分为空白组、对照组及不同剂量辛伐他汀治疗组(5、10、20、30、50、100μmol/L).应用CCK-8 比色法检测细胞增殖率;AV/PI流式细胞双染检测细胞凋亡率;Western blot法检测ATⅡ特异性标志表面蛋白C(SP-C)和增殖细胞核抗原(PCNA)的蛋白表达水平.结果 与对照组相比,在A549细胞缺氧前应用低剂量辛伐他汀(5～20 μmol/L)预处理30 min,可促进A549细胞的增殖并显著抑制CoCl2引起的凋亡,同时显著增加SP-C和PCNA的蛋白表达;而高剂量辛伐他汀组(50～ 100 μmol/L)并没有观察到促进增殖、抑制凋亡的保护作用.给予L-甲羟戊酸竞争性抑制辛伐他汀,可逆转辛伐他汀对ATⅡ细胞的保护作用.结论 低剂量辛伐他汀可逆转ATⅡ细胞缺氧复氧损伤,其保护机制与抑制甲羟戊酸代谢通路相关.     

宫腔镜诊治子宫内膜息肉122例临床分析

目的探讨宫腔镜及阴道彩超在子宫内膜息肉中的诊断价值。方法回顾性分析2010年1～12月122例经宫腔镜及病理检查诊断为子宫内膜息肉患者的临床资料。41.8%的患者表现为异常阴道出血或绝经后出血。结果阴道超声诊断子宫内膜息肉的敏感性为98.4%（120/122）,特异性为3.8%（20/525）。宫腔镜诊断子宫内膜息肉118例,敏感性为96.7%（118/122）,特异性为98.9%（519/525）,其中合并子宫内膜非典型增生3例。结论阴道B超诊断子宫内膜息肉的敏感性高,但特异性低,宫腔镜检查在不降低敏感性的同时可以明显提高特异性,病理检查是诊断子宫内膜息肉的金标准。     

经脐单一切口腹腔镜联合2mm trocar治疗腹腔型隐睾

目的探讨经脐单一切口腹腔镜联合2 mm trocar治疗腹腔型隐睾的应用价值。方法 2009年11月～2011年1月,采用经脐单一切口腹腔镜联合2 mm trocar治疗11例腹腔型隐睾。脐下缘1.5 cm弧形切口,置入自制多通道trocar,置入5 mm腹腔镜和操作器械1把,脐与耻骨联合连线中点处直接穿刺置入2 mm trocar,置入2 mm腹腔镜抓钳,进行手术。结果 10例11侧成功将隐睾下降固定于阴囊;1例1侧行隐睾切除术。手术时间30～70 min,平均45 min。无手术并发症发生。10例随访3～14个月,平均8.8月,未发现下降的睾丸萎缩。结论经脐单一切口腹腔镜联合2 mm trocar治疗操作不复杂的腹腔型隐睾可行。     

RNA干扰下调p53抑制因子iASPP表达对膀胱癌细胞的影响

Objective To discuss the effects of silencing of iASPP gene on human bladder cancer cells. Methods RNAi silencing of iASPP gene in bladder cancer cell 5637 and T24 cells were used by lentiviral mediated interfering short hairpin RNAs. Cell proliferation was tested by MTT assay, and rate of colony was tested by colony formation assay. Cell cycles were tested by using fluorescence-activated cell sorting. Results Down-regulation of iASPP could inhibit the growth and proliferation of human bladder cancer cells (P＜0.05). iASPP know-down could decrease the colony formation of 5637 and T24 cells (P＜0, 05). Knocking down of iASPP in 5637 and T24 cells showed cell arrested at G1. Conclusions Silencing of iASPP gene could inhibit proliferation and colony formation of bladder cancer, iASPP might be an important target for gene therapy of bladder cancer.     

应用OPA-K直丝弓矫治器双颌减数治疗安氏Ⅱ~1类错的临床研究

目的：评价OPA-K直丝弓矫治器双颌减数治疗安氏Ⅱ1类错的临床疗效,并探讨其机制和使用方法。方法：临床选择15～23岁安氏Ⅱ1类错患者22例,应用OPA-K直丝弓矫治器进行双颌减数治疗,并对治疗前后X线头影测量值的变化进行分析。结果：矢状方向上,U1-NA和U1-SN分别减小14.26°和10.32°,U1-NA（mm）减小4.16mm,U1-L1增加17.06°,以上差异均具有统计学意义（P〈0.05）,而SNA、SNB、ANB、L1-NB、L1-MP的变化均无显著性（P〉0.05）。垂直方向上,SN-MP和Y轴的变化均无显著性（P〉0.05）。结论：应用OPA-K直丝弓矫治器治疗安氏Ⅱ1类错可取得令人满意的临床效果。