Risk of stroke in imaging-proven subclavian steal syndrome

To determine the risk of stroke in patients with subclavian steal syndrome (SSS). We identified 165 patients with imaging-proven SSS from two hospitals. Demographic, clinical and imaging data were retrospectively collected. Patients were followed up for stroke events. Stroke occurred in 43 patients with a median follow-up of 28 months. Seven of these cases were identified prospectively and 36 cases retrospectively. On multivariate analysis, presence of symptoms at presentation (p = 0.029) was a significant predictor of stroke. Presence of symptoms at presentation predicted stroke in imaging-proven SSS.     

Identification and Validation of Six Autophagy-related Long Non-coding RNAs as Prognostic Signature in Colorectal Cancer

Colorectal cancer (CRC) is a commonly occurring tumour with poor prognosis. Autophagy-related long non-coding RNAs (lncRNAs) have received much attention as biomarkers for cancer prognosis and diagnosis. However, few studies have focused on their prognostic predictive value specifically in CRC. This research aimed to construct a robust autophagy-related lncRNA prognostic signature for CRC. Autophagy-related lncRNAs from The Cancer Genome Atlas database were screened using univariate Cox, LASSO, and multivariate Cox regression analyses, and the resulting key lncRNAs were used to establish a prognostic risk score model. Furthermore, quantitative real-time polymerase chain reaction (qRT-PCR) analysis was performed to detect the expression of several lncRNAs in cancer tissues from CRC patients and in normal tissues adjacent to the cancer tissues. A prognostic signature comprising lncRNAs {"type":"entrez-nucleotide","attrs":{"text":"AC125603.2","term_id":"21630347","term_text":"AC125603.2"}}AC125603.2, LINC00909, {"type":"entrez-nucleotide","attrs":{"text":"AC016876.1","term_id":"6539320","term_text":"AC016876.1"}}AC016876.1, MIR210HG, AC009237.14, and LINC01063 was identified in patients with CRC. A graphical nomogram based on the autophagy-related lncRNA signature was developed to predict CRC patients'' 1-, 3-, and 5-year survival. Overall survival in patients with low risk scores was significantly better than in those with high risk scores (P < 0.0001); a similar result was obtained in an internal validation sample. The nomogram was shown to be suitable for clinical use and gave correct predictions. The 1- and 3-year values of the area under the receiver operating characteristic curve were 0.797 and 0.771 in the model sample, and 0.656 and 0.642 in the internal validation sample, respectively. The C-index values for the verification samples and training samples were 0.756 (95% CI = 0.668-0.762) and 0.715 (95% CI = 0.683-0.829), respectively. Gene set enrichment analysis showed that the six autophagy-related lncRNAs were greatly enriched in CRC-related signalling pathways, including p53 and VEGF signalling. The qRT-PCR results showed that the expression of lncRNAs in CRC was higher than that in adjacent tissues, consistent with the expression trends of lncRNAs in the CRC data set. In summary, we established a signature of six autophagy-related lncRNAs that could effectively guide clinical prediction of prognosis in patients with CRC. This lncRNA signature has significant clinical implications for improving the prediction of outcomes and, with further prospective validation, could be used to guide tailored therapy for CRC patients.     

下胫腓联合损伤的分型和治疗进展

下胫腓联合是稳定踝关节的重要结构,其损伤常合并踝关节和腓骨高位骨折,少数情况可单独发生。非稳定性损伤见于非单纯性及部分单纯性下胫腓联合损伤,需早期手术治疗。稳定性损伤见于部分单纯性下胫腓联合损伤,可选择保守治疗。早期治疗和稳定下胫腓联合损伤比不治疗,延迟治疗能取得更好的临床疗效。目前单纯性下胫腓联合损伤的稳定性及急慢性诊断一直存在争议,下胫腓联合损伤的稳定性、损伤时间、固定类型可影响下胫腓联合损伤的临床疗效。手术治疗可选择螺钉固定和弹性固定。螺钉固定是治疗下胫腓联合损伤的金标准,但其螺钉是否拔除、置入位置等技术细节一直是争议的焦点,其缺点是可限制下胫腓联合微动等。保留下胫腓联合微动机制日益受到重视,弹性固定可作为一种螺钉替代治疗方式,已经取得较好的短期疗效,但长期临床疗效和是否需要加压固定等方面需进一步研究确定。下胫腓联合损伤的治疗需要根据其稳定性、损伤时间、固定类型等方面进行合理选择,有利于提高临床疗效。     

尼扎替丁氯化钠注射液的细菌内毒素检查

目的建立尼扎替丁氯化钠注射液细菌内毒素的检查方法。方法用不同厂家、不同批号、不同灵敏度的鲎试剂对尼扎替丁氯化钠注射液进行干扰试验。结果用标示灵敏度为0．25EU／mL的鲎试剂,将尼扎替丁氯化钠注射液稀释2倍后对细菌内毒素检查无干扰作用。结论可以用细菌内毒素检查法取代尼扎替丁氯化钠注射液的热原检查。     

术前经动脉化疗栓塞对肝细胞癌细胞凋亡的影响

目的 评价术前经导管动脉化疗栓塞(17ACE)对肝细胞癌(HCC)细胞凋亡的影响。资料与方法经手术病理证实的HCC136例，其中行1～5次TACE后Ⅱ期手术切除79例(TACE组)，按治疗方式不同分4组，A组：仅灌注化疗药物ll例，治疗1～4次；B组：化疗药 碘化油栓塞33例，治疗1～5次；C组：化疗药 碘化油 明胶海绵颗粒栓塞23例，治疗1—3次；D组：化疗药 碘化油、无水乙醇、明胶海绵颗粒栓塞12例，治疗1～3次。单纯手术57例(非TACE组)，用TUNEL(terminal deoxynucleotidyl transferase(TdT)-mediated dUTP-digoxigenin nick—end labeling)法检测凋亡细胞，用免疫组织化学检测各标本Bcl-2和Bax蛋白表达。结果 TACE组的A、B、C、D各组HCC细胞凋亡指数及Bax蛋白表达均显著高于非TACE组；而Bcl-2蛋白表达及Bcl-2和Bax蛋白表达比值TACE组的A、B、C、D各组均显著低于非TACE组。结论 术前TACE通过上调Bax蛋白表达，下调Bcl-2蛋白表达及Bcl-2和Bax蛋白表达比值使HCC细胞发生凋亡。     

Hypertensive Crisis during Microwave Ablation of Adrenal Neoplasms: A Retrospective Analysis of Predictive Factors

PurposeTo identify risk factors for hypertensive crisis (HC) during ultrasound-guided percutaneous microwave (MW) ablation of adrenal neoplasms.Materials and MethodsPatients who underwent MW ablation for adrenal tumors between April 2006 and November 2017 were retrospectively identified for this study (51 consecutive patients; 35 males, 16 females; mean age, 55 years; range, 15–85 years). A total of 77 MW ablation treatments were performed for 67 tumors (24 primary [9 pheochromocytomas, 8 adenomas, and 7 cortical carcinomas]; and 43 metastases [22 hepatocellular carcinoma, 8 renal cell carcinoma, 5 non-small cell lung cancer, 4 colorectal cancer, 3 liposarcoma, and 1 malignant fibrous histiocytoma]). The mean diameter of the adrenal tumors was 4.6 cm (range, 1.2–16.2 cm). Information about patient demographics, imaging studies, pathology and laboratory results, procedure records, and clinical outcomes was retrieved and analyzed. Statistical analysis was then performed to determine potential risk factors for HC.ResultsOf the 77 MW ablation procedures, HC occurred in 13 (16.9%). A significantly higher risk of HC was observed in patients with pheochromocytoma (odds ratio [OR], 9.037; 95% confidence interval [CI], 1.731–47.172; P = .009), body mass index <24 kg/m² (OR, 5.167; 95% CI, 1.060–25.194; P = .042), dominant tumor size ≤4.5 cm (OR, 4.023; 95% CI, 1.011–16.005; P = .048), and pre-procedural systolic blood pressure ≥130 mmHg (OR, 0.242; 95% CI, 0.068–0.861; P = .029).ConclusionHC can occur during MW ablation in patients with either primary or metastatic adrenal tumors. Pheochromocytoma, body mass index, tumor size, and pre-procedural systolic blood pressure appear to be significant risk factors for the occurrence of HC.     

Comparison of Radiofrequency Ablation and Hepatic Resection for the Treatment of Hepatocellular Carcinoma 2 cm or Less

Purpose

To compare survival outcome of radiofrequency (RF) ablation and surgical resection (SR) for treatment of hepatocellular carcinoma (HCC) ≤ 2 cm.

慢性阻塞性肺疾病患者肺组织中蛋白精氨酸甲基转移酶6的表达及意义

目的观察慢性阻塞性肺疾病（简称慢阻肺）患者肺组织中蛋白精氨酸甲基转移酶6（PRMT6）的mRNA及组蛋白H3R2位点非对称双甲基化（H3R2me2a）和H3K4位点三甲基化（H3K4me3）信号水平情况,探讨PRMT6是否通过调控组蛋白甲基化而参与慢阻肺的发病。方法选取胸外科因肺癌行肺叶切除术的患者3l例,据术前肺功能、吸烟史及慢阻肺诊断标准将患者分成对照组（非吸烟非慢阻肺,n=10）、吸烟组（吸烟非慢阻肺,n：10）和吸烟慢阻肺组（n=11）。选取远离原发病灶5cm以上、肉眼观察无肺癌浸润的外周肺组织,采用QRT．PCR检测PRMT6、白细胞介素13（IL．13）、环氧酶2（COX-2）的mRNA表达,同时Western．Blotting检测PRMT6蛋白表达及组蛋白H31t2me2a和H3K4me3信号水平。结果吸烟慢阻肺组FEV,％pred、FEVI／FVC及PEF％pred较对照组和吸烟组明显降低（P〈0．05）。与对照组比较,吸烟组及吸烟慢阻肺组PRMT6mRNA表达、PRMT6蛋白表达及组蛋白H3R2me2a信号水平均显著降低（P〈0．01）,而IL-13、COX-2的mRNA表达及H3K4me3信号水平均显著增高（P〈0．01）。结论慢阻肺患者肺组织中PRMT6表达下降,可能通过下调组蛋白H3R2me2a信号水平而上调组蛋白H3K4me3的信号水平参与慢阻肺的形成。     

玻璃体切除术联合内界膜剥除治疗特发性黄斑裂孔

目的:探讨玻璃体切除术联合内界膜剥除治疗特发性黄斑裂孔的疗效。方法:对93例93眼特发性黄斑裂孔患者行玻璃体切除联合内界膜剥除,气液交换,眼内填充C3F8。术后观察术眼视力及OCT了解黄斑裂孔变化。结果:特发性黄斑裂孔患者93例中裂孔完全愈合89例(96%),4例裂孔未闭,患者拒绝再次手术。绝大多数患者术后视力提高。结论:玻璃体切除联合内界膜剥除是治疗特发性黄斑裂孔的有效方法,能使绝大多数患者的裂孔得到解剖愈合,视力提高。