女性原发性骨质疏松肾虚三证与性激素变化的关系

目的探讨女性原发性骨质疏松(POP)肾虚三证与性激素变化的关系为临床辨证施治提供客观诊断依据。方法选择116例有肾虚三证的老年女性为研究对象,其中肾气虚52例,肾阴虚36例,肾阳虚28例,另选正常对照组50例,同步检测血清雌二醇(E2)、睾酮(T)、T/E2并进行统计学分析。结果与对照组相比,肾虚三证T、T/E2显著上升(P<0.05或0.01),肾阳虚T值较肾气虚亦有显著差异(P<0.05),肾虚三证E2较对照组显著下降(P<0.01)但组间无显著差异(P>0.05),逐步判别分析结果表明:性激素水平可作为POP肾虚三证的客观诊断指标。结论(1)女性POP患者性激素T、T/E2的变化按肾气虚、肾阴虚、肾阳虚逐渐升高,E2则逐渐降低;(2)女性POP患者性激素水平变化与肾虚三证关系密切,其变化依肾气虚、肾阴虚、肾阳虚逐渐明显;(3)究提示性激素水平变化可作为判断女性POP肾虚三型的客观指标。     

Hypoxia-induced lncRNA CASC9 enhances glycolysis and the epithelial-mesenchymal transition of pancreatic cancer by a positive feedback loop with AKT/HIF-1α signaling

Increasing evidence indicates the dysregulations and pivotal roles of lncRNAs in the development and progression of various cancers, including pancreatic cancer. Enhanced glycolytic flux and epithelial-to-mesenchymal transition (EMT) have been considered as important factors in driving the malignance of pancreatic cancer. Here, we sought to evaluate the biological role and involved mechanism of lncRNA CASC9 (CASC9) in pancreatic cancer. Our present study showed that CASC9 was upregulated in various pancreatic cancer cell lines. Loss- and gain-of function of CASC9 demonstrated its critical roles in promoting the glycolysis and EMT phenotypes of pancreatic cancer. Moreover, knockdown of CASC9 inhibited the tumorigenicity and metastasis in vivo. Additionally, our findings showed that hypoxia induced the expression of CASC9 and enhanced the binding of HIF-1α to its promoter. We also demonstrated that the positive feedback loop of CASC9 and the AKT/HIF-1α signaling cascade partially mediated this biological process. Altogether, our results suggest that CASC9 promotes the glycolysis and EMT of pancreatic cancer by a positive feedback loop with AKT/HIF-1α signaling, which is synergistically enhanced by the tumor hypoxic niche. Our study will provide potential therapeutic targets for treating pancreatic cancer.     

以肝损害为首发表现的急性髓系白血病一例并文献复习

目的探讨以肝损害为首发表现的急性髓系白血病(AML)的临床特点及治疗情况。方法对2019年9月7日解放军联勤保障部队第九四○医院收治的1例以肝损害为首发表现的AML患者的相关实验室检查、影像学、病理学结果及治疗情况进行回顾性分析,并复习相关文献。结果患者,女性,40岁,以肝损害为首发表现,结合各项实验室检查及骨髓穿刺检查结果诊断为AML。进行降低氨基转移酶治疗的同时积极治疗原发病,给予地西他滨+CAG方案定期化疗,1个疗程后达完全缓解,且肝功能基本恢复正常。结论 AML首发症状多样,且经常合并多系统器官损害,早期诊断、积极治疗原发病是改善患者预后的关键。     

Prediction model for malignant pulmonary nodules based on cfMeDIP-seq and machine learning

Cell-free methylated DNA immunoprecipitation and high-throughput sequencing (cfMeDIP-seq) is a new bisulfite-free technique, which can detect the whole-genome methylation of blood cell-free DNA (cfDNA). Using this technique, we identified differentially methylated regions (DMR) of cfDNA between lung tumors and normal controls. Based on the top 300 DMR, we built a random forest prediction model, which was able to distinguish malignant lung tumors from normal controls with high sensitivity and specificity of 91.0% and 93.3% (AUROC curve of 0.963). In summary, we reported a non–invasive prediction model that had good ability to distinguish malignant pulmonary nodules.     

The roles of the cell division cycle-associated gene family in hepatocellular carcinoma

BackgroundThe members of the cell division cycle-associated (CDCA) gene family are significant regulators of cell proliferation known to play key roles in various cancers. However, the function of CDCA genes in hepatocellular carcinoma (HCC) is unclear. The aim of this research was to clarify the roles of CDCA family members in HCC using bioinformatics analysis tools.MethodsWe studied data on the mRNA and protein expression of CDCA genes and survival in patients with HCC using the Oncomine, UALCAN, HPA, CCLE, LinkedOmics, cBioPortal, and Metascape databases.ResultsSignificant overexpression of all CDCA members was found in HCC tissues. The expression levels of CDCAs were related to the tumor stage, and high expression levels were correlated with a low survival rate in patients with HCC. Also, we observed a high mutation rate (45%) of CDCAs in the HCC samples, which manifested as deep deletion, amplification, or increased mRNA expression. In the correlation analysis, we found that any 2 CDCA members were significantly positively correlated with each other. Cycle-related genes including AHCTF1, AKT1, BIRC5, CENPF, CENPL, and CENPQ were closely associated with CDCA gene alterations.ConclusionsThe findings of this study indicate that CDCAs may be potential therapeutic targets and prognostic indicators for patients with HCC.     

川芎嗪对离体豚鼠气道平滑肌的效应及机制研究

目的：探讨川芎嗪( ligustrazine,LIG)对离体豚鼠气道平滑肌( airway smooth muscle,ASM)的效应及机制。方法取正常豚鼠支气管,制作成气管螺旋条,随机分成LIG组、LIG+普萘洛尔组、LIG+阿托品组、LIG+硝苯地平组、LIG+格列苯脲组、对照组。分别观察ASM在静息张力下以及组胺所致的高张力下,各组不同LIG浓度对ASM的效应并比较各组间ASM舒张率。结果(1) LIG对离体豚鼠ASM静息张力以及组胺所致的高张力均具有舒张作用。(2)离体豚鼠ASM在静息张力下,与LIG组比较,LIG+普萘洛尔组在LIG浓度10-7~10-6．5 mol/L时,舒张作用明显受到拮抗( P <0．05)。 LIG +阿托品组、LIG+格列苯脲组在LIG浓度10-7．5~10-3 mol/L时,舒张作用没有明显差别(P>0．05)。 LIG+硝苯地平组在LIG浓度10-6~10-4 mol/L时,舒张作用明显加强( P<0．05)。(3)离体豚鼠ASM在组胺所致的高张力下,与LIG组比较,LIG+普萘洛尔组在LIG浓度10-6.5~10-5 mol/L时,舒张作用明显受到拮抗( P<0．05);LIG+阿托品组、LIG+格列苯脲组在LIG浓度10-8~10-3 mol/L时,舒张作用没有明显差别( P>0．05);LIG+硝苯地平组在LIG浓度10-6.5~10-5 mol/L时,舒张作用明显加强(P<0．05)。结论 LIG可对离体豚鼠ASM静息张力以及组胺所致的高张力产生明显的舒张作用,其效应的产生可能与竞争性激动β2受体以及抑制Ca2+内流有关,这为临床应用川芎嗪治疗支气管哮喘提供了理论依据。     

珂立苏治疗足月新生儿呼吸窘迫综合征临床研究

目的 研究国产外源性肺表面活性物质（珂立苏）对足月新生儿呼吸窘迫综合征（respiratory distress syndrome,RDS）的疗效。方法 本研究分为两阶段：（1）第一阶段：2011年1月至2012年6月,研究珂立苏治疗足月儿RDS的疗效。根据家长意愿将RDS患儿分为珂立苏组（74例）和固尔苏组（80例）,比较在补充外源性肺表面活性物质后两组患儿血气变化、住院时间、住院费用、重要并发症发生率及重复用药率。（2）第二阶段：2012年7月至2013年3月,比较不同剂量珂立苏治疗足月儿RDS的疗效。将接受珂立苏治疗的80例足月RDS患儿,根据胸部X线改变分为轻中度组（X线胸片Ⅱ～Ⅲ级）50例和重度组（X线胸片Ⅳ级）30例,每组又分成小剂量（每次30 ～ 40 mg/kg）和大剂量（每次70 ～ 100 mg/kg）两个亚组,比较不同剂量珂立苏对RDS的疗效。结果 第1阶段：（1）两组RDS患儿在用药前及用药后0。5h和6h,动脉血pH、PaCO2和PaO2各指标差异无统计学意义（P＞0.05）。（2）两组患儿机械通气天数、总给氧天数、住院天数及重复用药率差异无统计学意义（P＞0.05）。（3）两组患儿多脏器功能衰竭、持续性肺动脉高压、急性肾功能衰竭、气胸发生率和病死率差异无统计学意义（P＞0.05）。（4）珂立苏与固尔苏组患儿平均住院费用分别为28。778千元及31.827千元,固尔苏组患儿平均减少9.6％（P＜0.05）。第2阶段：（1）对轻中度RDS,小剂量与大剂量珂立苏治疗前及治疗后0.5h和6h,pH、PaCO2和PaO2各指标差异无统计学意义（P＞0.05）。（2）对重度RDS,大剂量珂立苏改善动脉血气的效果优于小剂量珂立苏（P＜0.05）;小剂量组与大剂量组的重复用药率分别为20.0％（3/15）和33.3％ （5/15）,大剂量组患儿平均减少40％。结论 （1）对足月儿RDS,珂立苏与固尔苏均可显著改善患儿低氧血症和高碳酸血症,两组患儿机械通气时间、总吸氧时间及住院时间相似,但珂立苏组住院费用降低。（2）对轻中度RDS,小剂量与大剂量珂立苏具有相似的临床疗效;但对重度RDS,大剂量珂立苏的疗效维持较久,并可在一定程度上减少重复用药率。     

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??Abstract?? Objective To identify the clinical features and the prognosis of anti-NMDAR encephalitis in children??so as to improve the pediatrician’s awareness about this disease. Methods The clinical features??therapeutic regimen and prognosis of 17 children with anti-NMDAR encephalitis were summarized by a retrospective and follow-up study. Results Among the 17 patients with anti-NMDAR encephalitis??12 were males and 5 were females.Their age varied from 2 to 12 years??and the average age was 5 years 8 months.The most common initial symptoms were convulsions ??7 cases?? and psychiatric symptoms ??7 cases??.The common symptoms in the course of the disease were psychiatric symptoms??17 cases????sleep disorders ??16 cases????extrapyramidal symptoms ??14 cases????and convulsion ??11 cases??.Only 4 patients had autonomic symptoms.The anti-NMDAR antibody were found in all the patients’CSF.The EEG test of 16 patients showed diffused slow background.Tumors were not found in any patient. Fourteen cases were treated with IVIg and methylprednisolone??2 cases only received IVIg therapy and 1 case gave up.Rituximab ??2 cases?? and cyclophosphamide ??1 cases?? were administrated in 3 cases with no improvement after the above treatment.The patients had been followed up for 3 to 15 months.Twelve of them recovered completely??2 cases died??2 cases had epilepsy??and 1 case had speech disorder. Conclusion Psychiatric symptoms??sleep disorders??extrapyramidal symptoms and convulsion are the common symptoms of anti-NMDAR encephalitis in children.Tumors and autonomic nervous system dysfunction rarely happen. Immunotherapy is effective in the majority of the patients.The prognosis of anti-NMDAR encephalitis in children is optimistic.