伴上肢局部水肿的颈椎病与颈椎减压术的关系

[目的]探讨伴有上肢局部水肿的颈椎病患者的发病机理和与手术颈椎减压的关系。[方法]总结分析4a来收治的10例伴有上肢局部水肿的颈椎病人，其中脊髓型颈椎病7例，神经根型颈椎病2例，后纵韧带骨化型1例，7例行前路椎体次全切减压植骨内固定，1例行前路椎体次全切＋单间隙间盘摘除植骨内固定，2例行后路减压植骨内固定，术后观察患者水肿消退情况。[结果]10例病人上肢局部水肿不同程度消退，前路手术者较后路手术者消退快。[结论]颈椎病患者上肢水肿的发生与颈交感神经受激惹有关，通过前路或后路颈椎管减压，去除颈椎不稳、椎间盘突出、骨赘等交感神经受激惹因素，水肿可逐步消退。     

改良Sugiura术与青木春夫式断流术的比较

目的评价改良Sugiura术的疗效。方法回顾性分析2001年3月～2004年12月施行的改良Sugiura术50例患者的临床资料，并与随机抽取的以往施行的青木春夫式断流术50例做比较。结果改良Sugiura术：术后发生并发症10例，手术死亡5例，远期出血5例，肝性脑病3例，术后死亡4例；青木春夫式断流术：术后发生并发症7例，手术死亡2例，远期出血6例，肝性脑病2例，术后死亡4例，上述指标两者比较差异均无统计学意义，P〉0．05。改良Sugiura术手术时间和住院时间分别为（2．6±0．9）h、（27．5±10．5）d，显著短于青木春夫式断流术的（3．8±0．8）h和（53．2±34．2）d，P〈0．01。结论改良Sugiura术总体疗效肯定，是一种较好的青木春夫式断流术的替代手术，其操作简便，手术时间和住院时间短，值得临床推广。     

阿司匹林对肺癌细胞增殖的影响及机制探讨

目的:研究阿司匹林对肺腺癌细胞A549增殖的影响,并探讨其作用的可能机制。方法:采用噻唑蓝(MTT)法观察阿司匹林对A549细胞增殖的影响;采用免疫细胞化学法观察阿司匹林对A549细胞COX2表达的影响;采用流式细胞仪(FCM)、HE染色和DNA末端原位标记染色技术(TUNEL)观察阿司匹林对A549细胞周期的影响及诱导凋亡的作用。结果:阿司匹林呈剂量、时间依赖方式抑制A549细胞增殖,72h细胞最高抑制率达75.6%;阿司匹林作用后,A549细胞COX2蛋白表达明显降低;FCM显示G0/G1期细胞比例增加,达到(60.2±2.33)%,S期和G2/M期细胞比例分别降低到(32.9±2.88)%和(6.9±0.66)%,TUNEL显示细胞凋亡指数(AI)由(3.67±1.15)%增加到(26.33±2.52)%,呈一定剂量效应关系。光镜下可见典型的细胞凋亡形态学变化。结论:阿司匹林可能通过减少COX2表达,改变细胞周期分布和诱导细胞凋亡,从而抑制肺腺癌细胞A549增殖。     

Pilot study of salivary butyrylcholinesterase,phosphodiesterase, thiols and cerulopalsmin in auditory neuropathy

ObjectiveTo estimate butyrylcholinesterase (BChE), phosphodiesterase (PDE), thiols and cerulopalsmin by non – invasive means in saliva a of subjects (both cases and controls) and correlated to their hearing sensitivity.MethodsTotal of 13 subjects participated in this study. Among them 7 were having auditory neuropathy and 6 were healthy controls. Unstimulated saliva (10 ml) was collected from each participant. Ceruloplasmin, thiols, phosphodiesterase and pseudocholinesterase were estimated by colorimetric method in the salivary samples.ResultsSalivary BChE and PDE levels were marginally elevated and protein thiols were marginally decreased in cases as compared to that of controls. Salivary ceruloplasmin was significantly decreased (p = 0.022) in cases as compared to that of controls.ConclusionsSaliva can be used as a potential noninvasive tool for evaluation of disorders.     

Seasonal influenza vaccination among cancer patients: A systematic review and meta-analysis of the determinants

Cancer patients are among high-risk individuals for whom seasonal influenza vaccine (SIV) is recommended, but rates of vaccination in this subpopulation remain suboptimal; even in jurisdictions with universal influenza vaccination programs. We sought to summarize the evidence to better understand the determinants of SIV uptake (vaccine receipt) among cancer patients. We searched MEDLINE, Embase, and CINAHL from 2000 to February 12, 2020, focusing on articles on the determinants of seasonal influenza vaccination among cancer patients, published in English. Study selection was conducted independently by 2 reviewers. One reviewer extracted data from the included studies and another reviewer checked the extracted data for errors. Outcomes were sociodemographic and health-related factors. We pooled adjusted results from studies using the inverse variance, random-effects method, and reported the odds ratios (OR) and their 95% confidence intervals (CI). Out of 2664 citations, 10 studies (mostly from USA and South Korea) met our eligibility criteria. Overall, being older (OR 2.23, 95% CI 1.46-3.38; I² 92.3%, [6 studies]), a nonsmoker (1.43, 1.32-1.51; I² 0%, [4 studies]), having a chronic illness (1.18, 1.07-1.29; I² 15.7%, [5 studies]), having had a medical check-up in the past year (1.75, 1.65-1.86; I² 0%, [2 studies]), and having health insurance (1.39, 1.13-1.72; I² 21.8%, [3 studies]) were associated with increased SIV uptake. Compared with being African-American, being Caucasian was also associated with increased SIV uptake (1.79, 1.47-2.13; I² 10.7%, [3 studies]). Limited evidence suggests seasonal influenza vaccination among cancer patients may be determined by some sociodemographic and health-related factors.     

The case for aflatoxins in the causal chain of gallbladder cancer

Chronic aflatoxin exposure has long been related to hepatocellular carcinoma (HCC). Recently, its association with gallbladder cancer (GBC) was postulated. Here we present the data supporting this hypothesis in Chile, the country with the highest GBC mortality worldwide with age-standardized mortality rates (ASMR) of 10.3 in women and 5.04 in men.The highest GBC rates occur in Southern Chile (ASMR = 18), characterized by: high Amerindian ancestry, associated with high bile acid synthesis and gallstones; high poverty and high cereal agriculture, both associated with aflatoxin exposure. Aflatoxins have been detected in imported and locally grown foods items. We estimated population dietary exposure ranging from 0.25 to 35.0 ng/kg-body weight/day. The only report on human exposure in Chile found significantly more aflatoxin biomarkers in GBC than in controls (Odds Ratio = 13.0).The hypothesis of aflatoxin-GBC causal link in the Chilean population is supported by: genetically-determined rapid cholesterol excretion and high gallstones prevalence (49.4%); low prevalence of HCC (ASMR = 4.9) and low HBV infection (0.15%) the main co-factor of aflatoxins in HCC risk.If the association between aflatoxins and GBC were confirmed, public health interventions based on food regulation could have a substantial public health impact.     

低剂量CT联合全模型迭代重建对肺磨玻璃结节的诊断价值研究

目的探讨低剂量CT联合全迭代重建算法对肺磨玻璃结节的诊断能力。方法回顾性分析经病理证实的肺磨玻璃结节患者100例,在行低剂量扫描(40 mAs,120 KeV)后分别进行混合迭代算法iDose4重建和全模型迭代算法(Iterative model reconstruction,IMR)重建,分别在右肺上、中、下叶外侧带、支气管分叉层面升主动脉内、膈肌层面降主动脉内测量噪声值,并取平均值。对比分析iDose4和IMR图像噪声值、肺磨玻璃结节各个征象的显示效能。结果IMR图像5个感兴趣区域的平均噪声值均低于iDose4图像,P值均<0.05,差异有统计学意义;在iDose4图像上纯磨玻璃结节显示39枚,IMR图像显示68枚,P值<0.05,差异有统计学意义。在iDose4图像上瘤-肺界面清晰显示74枚,IMR图像显示119枚,P值=0.001。在iDose4图像上肿瘤微血管Ⅱ型显示27例,IMR图像显示54例,P值>0.01,差异有统计学意义。结论低剂量联合IMR算法较iDose4算法具有更低的噪声。IMR算法对于纯磨玻璃结节的检出、瘤-肺界面及肿瘤微血管征Ⅱ型的显示优于iDose4算法。低剂量联合全迭代重建在肺磨玻璃结节诊断中具有较高的应用价值。     

血清PSA含量及前列腺PSA密度与经直肠超声引导下前列腺穿刺活检诊断前列腺癌的关系

目的探讨经直肠超声引导下前列腺穿刺活检术前列腺癌检出率与血清前列腺特异性抗原(PSA)及血清前列腺特异性抗原密度(PSAD)的关系。方法对134例患者行经直肠超声引导下前列腺5区13针系统穿刺活检。根据PSA水平分为PSA≤4ng/ml组(7例)、4ng/mlPSA15ng/ml组(48例)及PSA≥15ng/ml组(79例)。测量并计算前列腺体积(PV)及PSAD,分析前列腺癌检出率及不同PSA、PSAD水平下对前列腺癌的诊断效能。比较前列腺癌与非前列腺癌患者PSA、PV及PSAD的差异。结果前列腺癌总检出率为50.75%(68/134),前列腺患者共68例(前列腺癌组),非前列腺癌患者共66例(非前列腺啊组)。PSA≤4ng/ml、4ng/mlPSA≤15ng/ml及PSA15ng/ml组前列腺癌检出率分别为14.29%(1/7)、20.83%(10/48)及72.15%(57/79),差异有统计学意义(P0.05)。PSA≥4ng/ml时前列腺癌检出率随着PSA值的增高而上升。134例患者PSAD值为(1.09±1.72)ng/(ml·cm3),以PSAD≥0.19ng/(ml·cm3)为截点诊断前列腺癌的敏感度为95.59%(65/68),特异度为51.52%(34/66),阳性预测值67.01%(65/97),阴性预测值为32.99%(32/97)。4ng/mlPSA≤15ng/ml组中,以PSAD≥0.19ng/(ml.cm3)为截点诊断前列腺癌的敏感度为80.00%(8/10),特异度为71.05%(27/38),阳性预测值为42.11%(8/19),阴性预测值为57.89%(11/19)。前列腺癌组PSA及PSAD值均高于非前列腺癌组(P均0.05),PV小于非前列腺癌组(P0.05)。4ng/mlPSA≤15ng/ml组中,前列腺癌与非前列腺癌患者PSA及PV差异均无统计学意义(P均0.05),前列腺癌患者PSAD高于非前列腺癌患者(P0.05)。结论血清PSA及PSAD均与前列腺穿刺活检前列腺癌检出率有关,PSA15ng/ml应行穿刺活检,PSAD对4ng/mlPSA≤15ng/ml的患者是否应行穿刺活检具有指导意义。