Modified one-stage posterior/anterior combined surgery with posterior pedicle instrumentation and anterior monosegmental reconstruction for unstable Denis type B thoracolumbar burst fracture

Purpose

This study aimed to evaluate the clinical and radiological results in patients with unstable Denis type B thoracolumbar burst fractures treated by modified one-stage posterior/anterior combined surgery.

Methods

Thirty-one patients with unstable Denis type B thoracolumbar burst fractures were enrolled in this study. The patients underwent one-stage posterior/anterior combined surgery with posterior instrumentation using pedicle screws and anterior monosegmental reconstruction utilizing titanium mesh cages. The mean follow-up period was 38.3 months. Clinical outcomes, radiological parameters, and treatment-related complications were assessed.

Results

The mean age of the patients was 36.4 years. The mean operative time and blood loss were 230 min and 645 ml, respectively. The VAS pain score was significantly improved after surgery, and the improvement was maintained until the final follow-up. In 23 patients with neurologic dysfunction, 20 (87 %) patients had improvement after surgery. By the final follow-up, 27 patients had returned to work; 18 of the 27 patients returned to a similar job. The mean sagittal kyphosis was corrected from 21.2° preoperatively to 2.5° postoperatively, which increased slightly to 4.3° at the final follow-up. Minimal subsidence and tilt of the titanium mesh cage were observed during the follow-up period. Solid bony fusion was achieved in all patients. One patient developed a posterior surgical site infection, which was resolved by antibiotic treatment and surgical debridement.

Conclusion

Modified one-stage posterior/anterior combined surgery for Denis type B unstable thoracolumbar burst fractures can produce good clinical and radiological outcomes.

     

Low body mass index can be predictive of bracing failure in patients with adolescent idiopathic scoliosis: a retrospective study

Purposes

To determine the relationship between low body mass index (BMI) and the outcome of brace treatment in patients with adolescent idiopathic scoliosis (AIS).

Methods

350 braced female AIS patients were included in this study. The baseline characteristics of the patient were recorded at their first visit, including age, Risser sign, digital skeletal age, BMI, curve pattern, and curve magnitude. Underweight was defined as lower than the 5th percentile of the sex- and age-specific BMI. The treatment was considered as a failure if the curve progressed more than 5°, or if patients underwent surgery. According to the final outcome of brace treatment, the cohort was divided into the success group and the failure group. A logistic regression model was created to determine the independent predictors of the bracing outcome.

Results

24.5% (86/350) of the patients were identified as underweight at their initial visit, which was significantly higher than the rate of 13.1% (46/350) at the final follow-up (p < 0.001). At the initial visit of the patients, the rate of underweight was 17.6% (45/255) in the success group, which was significantly lower than the rate of 43.1% (41/95) in the failure group (p < 0.001). Logistic regression analysis showed that low BMI was significantly associated with bracing failure (p < 0.001).

Conclusion

The low BMI could be predictive of bracing failure in AIS patients, which should be taken into account when surgeons prescribe brace treatment to such patients.

     

En Bloc Resection with Major Blood Vessel Reconstruction for Locally Invasive Retroperitoneal Paragangliomas: A 15-Year Experience with Literature Review

Background

Retroperitoneal paragangliomas (PGs) are a rare subgroup of neuroendocrine tumors that are commonly located alongside the abdominal aorta. Complete tumor resection is thought to be restricted in patients with major blood vessel involvement. However, no study has specifically focused on aggressive surgical treatment in such patients. We evaluated the value of en bloc resection with major blood vessel reconstruction for locally invasive retroperitoneal PGs.

Methods

Twenty-nine patients with retroperitoneal PGs with major blood vessel involvement were included in this retrospective study. Survival was compared between patients who underwent en bloc resection with major blood vessel reconstruction and those who underwent medical treatment. Prognostic predictors were analyzed in patients who underwent en bloc resection with major blood vessel reconstruction.

Results

All 11 patients who underwent medical treatment obtained a pathological diagnosis by computed tomography-guided percutaneous needle biopsy. All 18 patients who underwent en bloc resection with major blood vessel reconstruction achieved complete tumor resection. Overall survival was higher in patients who underwent complete tumor resection than in those who underwent medical treatment (p < 0.05). No perioperative mortality occurred in patients who underwent complete tumor resection. Patients with no metastasis, no organ invasion, R0 resection, a Ki-67 index of ≤3%, and a tumor diameter of ≤11.7 cm showed better tumor-free survival (p < 0.05).

Conclusions

En bloc resection with major blood vessel reconstruction can be successfully performed and provide satisfactory outcomes for patients with locally invasive retroperitoneal PGs. This technique may become a standard surgical strategy for properly selected patients.

     

Association between obesity and absolute renal risk factors in patients with IgA nephropathy

Objective To investigate the influence of obesity on renal lesion in IgA nephropathy (IgAN) patients by analyzing the association between obesity and absolute renal risk factors (ARR). Method Clinical-pathological data of IgAN patients diagnosed by renal biopsy in General Hospital of Ningxia Medical University were collected retrospectively. According to the body mass index (BMI), patients were divided into non-obese group (BMI＜28, N-OB group) and obese group (BMI≥28, OB group). Their clinical characteristics, pathological index and ARR scores were compared. The relationship of BMI and ARR was analyzed by ordinal logistic regression models. Results (1) A total of 674 IgAN patients with mean age of 35.5±11.3 years were enrolled, including 94 in OB group and 580 in N-OB group respectively. Compared with those in the N-OB group, the proportion of male, age, mean arterial pressure, blood uric acid, blood triglyceride, diabetes mellitus and hypertension increased in OB group (all P＜0.01). Patients in OB group had lower estimated glomerular filtration rate (eGFR) and higher ARR score than those in N-OB group (all P＜0.05). (2) More severe thickening renal small artery wall and hyaline degeneration were observed in the OB group than in the N-OB group (all P＜0.01). There was no statistical difference between the two groups in Lee classification, Oxford classification, mesangial cell proliferation, glomerular sclerosis, crescent formation, renal tubular atrophy, interstitial inflammatory cell in filtration and endothelial cell proliferation. (3) After adjusting for age, sex, blood uric acid, serum albumin, eGFR, low density lipoprotein, glomerular sclerosis, interstitial inflammatory cell infiltration, renal tubular atrophy and vascular wall thickening, BMI was still an independent risk factors for ARR in IgAN patients (OR=1.09, 95%CI 1.03-1.14). Conclusions BMI is an independent risk factors for ARR in IgAN patients. Early prevention and control of obesity and its associated risk factors may improve outcomes of IgAN patients.     

The Leukocyte Esterase Strip Test has Practical Value for Diagnosing Periprosthetic Joint Infection After Total Knee Arthroplasty: A Multicenter Study

Background

Leukocyte esterase (LE) was recently reported to be an accurate marker for diagnosing periprosthetic joint infection (PJI) as defined by the Musculoskeletal Infection Society (MSIS) criteria. However, the diagnostic value of the LE test for PJI after total knee arthroplasty (TKA), the reliability of the subjective visual interpretation of the LE test, and the correlation between the LE test results and the current MSIS criteria remain unclear.

婴幼儿公民逝世后器官捐献成人双肾移植的临床效果(附2例报告)

目的  探讨婴幼儿公民逝世后器官捐献成人肾移植的临床效果。方法  回顾性分析2例婴幼儿供肾成人肾移植的临床资料、手术方式、免疫抑制剂应用和随访情况并复习相关文献。结果  1例男性受者原发病为慢性肾脏病变、肾衰竭, 术后移植肾功能恢复良好, 移植肾体积逐渐增大, 末次随访时（术后10个月）血清肌酐为84 μmol/L。另1例女性受者原发病为肾衰竭尿毒症期, 术后23 d死于心力衰竭合并严重肺部感染。2例受者均未发生血管并发症。结论  婴幼儿捐献成人肾移植术后早期临床效果良好, 移植肾增长迅速。术中精细操作, 有利于预防供肾动脉血栓栓塞等并发症的发生。     

Comparisons of the prevalence and correlation factors of chronic kidney disease between the old urban and rural residents in MinHang district of Shanghai

Objective To compare the prevalence and correlation factors of chronic kidney disease (CKD) in urban and rural areas in Minhang district of Shanghai through the social economic and clinical data of the elderly population. Methods Jiangchuan Street and Pujiang town were randomly selected to represent the urban and rural population in Minhang district of Shanghai, respectively. Based on the over-60-year old people health examination program, 6151 objectives with complete clinical-epidemiological data and bio-chemical index were investigated. The prevalence of CKD in urban and rural areas was compared, and the correlation factors for the urban and rural CKD were evaluated by multiple logistic regression analysis. Results (1) The survey objectives with an average age of (69.57±7.04) years, including 4345 cases of the city residents and 1806 cases of rural residents, were enrolled. The age structures of urban and rural showed differences, population over 80 years old account for 13.1% of the rural total, significantly higher than 7.4% in the urban population (P＜0.001). (2) The prevalence rates of diabetes, hyperuricemia, hyperlipidemia and hyperlipidemia in urban residents were higher than those in rural residents, which were 26.4% vs 13.7%, 9.9% vs 2.3%, 53.7% vs 37.4%, 51.4% vs 15.6% (all P＜0.01). The awareness rates of kidney disease and hyperlipidemia showed significant differences in urban and rural areas, which were 32.9% vs 44.2%, 84.6% vs 62.8% (all P＜0.01). Compared with those in rural areas, the treatment rates of hypertension and high blood lipids in urban residents were increased (all P＜0.01). (3) The prevalence of CKD was 23.4%. Female CKD prevalence was higher than male, respectively 26.3% and 18.5% (P＜0.01). In urban CKD prevalence was 22.2%, lower than 25.2% in rural. The prevalence rate of hematuria in urban areas was lower than in rural areas, but the prevalence rate of decline in renal function was higher (all P＜0.05). With the increase of age, the prevalence rate of CKD was increased (P＜0.01). (4) Age (OR=1.072), smoking history (OR=1.543), previous history of kidney disease (OR=1.351), diabetes (OR=1.373), hyperuricemia (OR=2.498), obesity (OR=1.364), history of interventional therapy (OR=1.896) had positive correlation with CKD in city elderly population, while the higher education (OR=0.676, OR=0.604) and drinking (OR=0.585) had negative correlation (all P＜0.05). Age (OR=1.032), female (OR=1.860) had positive correlation with CKD in rural elderly population (all P＜0.05). Conclusions CKD has been a common chronic progressive disease of the aged in Minhang district. The prevalence of CKD is higher in urban areas than in rural. Age is a common factor for CKD in urban and rural. Previous smoking, history of kidney disease, diabetes, hyperuricemia, obesity, history of interventional therapy, education and drinking have correlation with urban CKD patients. Female has correlation with rural CKD population.     

胃癌细胞多药耐药相关蛋白质筛选鉴定的蛋白质组学研究

目的 在胃癌细胞株SGC7901及稳定的耐药细胞株SGC7901/VCR中寻找与胃癌多药耐药(MDR)直接相关的蛋白质,观察其功能.方法 胃癌细胞株SGC7901和稳定的耐药细胞株SGC7901/VCR培养后提取总蛋白,采用蛋白质组学技术(双向凝胶电泳和基质辅助激光解吸电离-飞行时间质谱鉴定)筛选并鉴定差异表达的蛋白质,并应用蛋白印迹试验法对鉴定出的部分蛋白质在胃癌细胞株中的表达进行验证.结果 在两种细胞株中找到表达差异明显的蛋白质点9个,经质谱分析,7种蛋白质得到鉴定,为S60核糖体蛋白L23、电压依赖性阴离子选择性通道蛋白1、锌指蛋白394、角蛋白Ⅰ型细胞骨架9、核糖核酸3'-端磷酸化酶1、matrin型锌指蛋白2、Sideroflexin-1.这些蛋白质与胃癌MDR直接相关.蛋白印迹试验法检测部分蛋白质在胃癌细胞株中的表达,与蛋白质组学所得结果一致.结论 胃癌细胞SGC7901和SGC7901/VCR蛋白质表达存在差异.

Abstract：

Objective To investigate multidrug resistance related proteins in human gastric carci noma cell lines SGC7901 and SGC7901/VCR by comparative proteomics.Methods After culture,the holoproteins of human gastric carcinoma cell lines SGC7901 and GC7901/VCR were extracted,and then measured by two-dimensional gel electrophoresis and matrix assisted laser desorption/ionization time-offlight mass spectrometry (MALDI-TOF-MS).Some proteins obtained through proteomics were tested by Western blotting in the cell lines.Results There were different proteins in these 2 human gastric carcinoma cell lines.Nine different protein spots were found in these 2 gastric carcinoma cell lines,and 7 spots were identified by MALDI-TOF-MS,and these proteins were 60S ribosomal protein L23 ( RL23),voltagedependent anion-selective channel protein-1 (VDAC1),zinc finger protein (ZNF) 394,keratin,type Ⅰcytoskeletal 9 ( KIC9),RNA 3' -terminal phosphate cyclase 1 ( RTC1 ),zinc finger matrin-type protein 2,Sideroflexin-1.These proteins had a direct relationship with multidrug resistance in gastric carcinoma.Results of Western blotting about protein expression were in consonance with those of proteomics.Conclusion Different proteins were found in human gastric carcinoma cell lines SGC7901 and SGC7901/VCR.     

椎旁肌间隙入路经伤椎椎弓根植骨内固定治疗胸腰椎骨折

目的 探讨椎旁肌间隙人路经伤椎椎弓根羟基磷灰石植骨内固定治疗胸腰椎骨折的安全性及有效性.方法 2007年6月至2008年12月,采用椎旁肌间隙入路经伤椎椎弓根羟基磷灰石植骨、短节段椎弓根螺钉固定治疗19例胸腰椎骨折患者,其中男性12例,女性7例;年龄21～57岁,平均40.8岁.受伤至手术时间1～5 d,平均2.9 d.均为单节段骨折,其中T111例,T125例,L19例,L2 4例;依据Denis骨折分型,压缩型骨折5例,爆裂型骨折14例;术前椎体前缘高度平均57.2%,后凸角平均17.6°,椎管占位率平均27.7%;负荷分配分类法评分平均5.2分;神经功能按ASIA分级:B级2例,C级9例,D级8例.结果 手术时间60～95 min,平均83.8 min;术中出血量90～200 ml,平均133 ml;患者切口均一期愈合.术后随访12～36个月,平均19.2个月;末次随访椎体前缘高度恢复至88.4%,后凸矫正至6.1°,椎管占位率恢复至8.2%;末次随访神经功能恢复情况:D级2例,E级17例;所有病例未发现内固定失效及腰背部疼痛症状.结论 椎旁肌间隙入路经伤椎椎弓根羟基磷灰石植骨内固定可有效改善神经功能及维持矫正效果,具有组织损伤轻、出血少和降低手术创伤导致的椎旁肌退变及术后腰背痛的发生率等优点.

Abstract：

Objective To investigate the feasibility and safety of the treatment for thoracolumbar fractures with transpedicular intracorporeal hydroxyapatite grafting and pedicle screw fixation via paraspinal approach. Methods From June 2007 to December 2008, 19 cases of thoracolumbar fractures were treated with transpedicular intracorporeal hydroxyapatite grafting and pedicle screw fixation via paraspinal approach. There were 7 female and 12 male, ranging from 21 to 57 years of age (mean 40. 8 years) at surgery. The time from injury to surgery varied from 1 d to 5 d ( mean 2. 9 d). Nineteen patients all suffered from single thoracolumbar fracture with the distribution of injury level being T11 in 1, T12 in 5, L1 in 9, and L2 in 4. According to Denis fracture classification, there were 5 compression fractures and 14 burst fractures.The mean preoperative ratio of the anterior height of the body was 57. 2%, kyphosis angle was 17.6° and occupation of spinal canal was 27.7%. The mean preoperative load-sharing classification of spine fractures was 5.2. Based on the ASIA neurologic grading system, preoperative neurological function was grade B in 2 cases, C in 9 and D in 8. Results Median operating time was 83. 8 min ( range 60-95 min) and median blood loss was 133 ml (range 90-200 ml). Infection did not occur in any of the patients and the operative incisions were healing well. Average follow-up time was 19. 2 months (range 12-36 months). At the latest follow-up, the height of the anterior border was corrected to 88.4%, the kyphosis angle was 6. 1 ° , and the occupation of spinal canal was 8.2% on average. The postoperative neurologic function of all 19 patients was improved with grade D in 2 cases and E in 17. There were no instances of instrumentation failure and no patient had persistent postoperative back pain. Conclusions Transpedicular intracorporeal hydroxyapatite grafting and pedicle screw fixation via paraspinal approach could provide reliable neurologic improvement in patients with incomplete neurologic deficit, and could prevent the development of kyphosis. Furthermore, it has the obvious advantages of less invasive and blood loss, and decreases the risks of postoperative lumbodorsal pain.