氟砷联合染毒大鼠子代脏器中氟蓄积水平的研究

目的：探讨氟砷同时暴露对子代内氟蓄积水平的影响。方法：采用两代一窝繁殖实验的方法,观察Ｗｉｓｔａｒ大鼠同时暴露于氟砷一定时期后期其子代脏器组织中氟含量的变化。结果：子代脏器中氟含量随亲代染毒剂量的增加而增加,但不同脏器氟的蓄积水平有所不同。结论：氟的蓄积是脏器发生病理变化及氟中毒特定临床表现的重要的物质基础。     

4种细胞因子对K562/S及其耐药细胞株K562/A02积蓄柔红霉素的影响

目的通过检测４种常用细胞因子对白血病细胞株Ｋ５６２／Ｓ及其多药耐药细胞株Ｋ５６２／Ａ０２积蓄柔红霉素（ＤＮＲ）能力的影响,评价细胞因子在抗白血病细胞多药耐药性方面的应用前景。方法用流式细胞仪及荧光法检测重组人α－干扰素（ＩＦＮ－α）、白细胞介素２（ＩＬ－２）、肿瘤坏死因子（ＴＮＦ）、重组人粒－单集落刺激因子（ＧＭ－ＣＳＦ）对Ｋ５６２／Ｓ及Ｋ５６２／Ａ０２积蓄柔红霉素能力的影响。结果ＩＬ－２、ＴＮＦ、ＧＭ－ＣＳＦ作用后Ｋ５６２／Ｓ及Ｋ５６２／Ａ０２细胞株对柔红霉素的积蓄无改变,而ＩＦＮ－α可显著提高耐药细胞系Ｋ５６２／Ａ０２细胞内ＤＮＲ浓度,在１５０ｍｉｎ时升高了４.０１倍（Ｐ＜０.０５）。结论小剂量（５００Ｕ／ｍｌ） α－干扰素作用后,多药耐药细胞株 Ｋ５６２／Ａ０２对抗肿瘤药物ＤＮＲ的积蓄作用大大提高,提示ＩＦＮ－α具有提高耐药细胞株细胞内药物浓度、恢复其药物敏感性、逆转多药耐药性的作用。     

Differential modulation of cisplatin accumulation in leukocytes and tumor cell lines by the paclitaxel vehicle Cremophor EL

Background: Several clinical studies have shown that poly-chemotherapy with the taxanes paclitaxel or docetaxel preceded or followed by cisplatin is associated with important schedule-dependent differences in toxicities, such as leukocytopenia. In general, the pharmacokinetics of both drugs during the combined treatment are unaltered, suggesting that a pharmacodynamic interaction might have occurred.Materials and methods: In order to gain insight into this pharmacologic interaction, we performed in vitro drug accumulation studies using peripheral blood leukocytes and a panel of tumor and non-malignant cell lines with paclitaxel and docetaxel, as wel as with their respective formulation vehicles Cremophor EL and Tween 80.Results: Our results show a significant reduction in the intracellular cisplatin concentration in leukocytes of up to 42% in the presence of Cremophor EL and Tween 80 as compared to the control. This pharmacodynamic interaction of these surfactants with cisplatin seems to be specific for haematopoietic cells, and does not occur in solid tumor cells.Conclusion: The present data suggest that the pharmaceutical vehicles Cremophor EL and Tween 80 might contribute to the reduced cisplatin-associated myelotoxicity observed in the clinical combination chemotherapy studies with paclitaxel and docetaxel.     

上海市二、三级医院品牌现状及其影响因素分析

通过对上海市二、三级医院的调查 ,分析了上海市二、三级医院的品牌现状 ,并且从医院内部因素、外部因素、医院品牌历史沉积三方面对影响医院品牌的因素进行分析总结     

梁外半野生甘草最佳采收期研究

目的:研究甘草中甘草酸的积累动态,确定内蒙古梁外地区育苗移栽的半野生甘草最佳采收期.方法:用HPLC法测定不同时间采集的不同株龄的半野生甘草中甘草酸含量.结果:甘草中甘草酸含量6～7月份最高,8月份开始逐渐降低,11～12月最低,翌年3～4月份开始逐渐增加,直到6～7月份达最高峰;甘草在移栽后的前三年,甘草酸含量无明显增加,第四年的各个月份的甘草酸含量均远大于头三年.结论:育苗移栽的半野生甘草的最佳采收期为移栽后的第四年7～8月份.     

调胃承气汤加味治疗急性痰热腑实中风便秘证

运用调胃承气汤加味治疗急性痰热腑实证中风便秘69例。结果：显效52例，好转12例，无效5例。总有效率为92．8％；且对缺血性和出血性中风便秘之间疗效无显著差异。     

GBE1基因突变型糖原累积病Ⅳ型1例报告

目的探讨GBE1基因突变的糖原累积病Ⅳ型(GSD Ⅳ)患儿的临床特点及其家系的基因突变情况。方法分析1例GSD Ⅳ患儿的临床表现、肝脏病理结果及其父母的全外显子基因测序情况,并进行文献复习。结果患儿,男,1岁10个月,肝脾肿大6月余伴发热7天;肝脏组织病理示慢性肝损伤,不能除外遗传代谢病。全基因外显子检测示患儿存在2种新的GBE1基因的杂合突变,分别为来自父亲的c.1694GA杂合突变(致病性变异)和来自母亲的c.218AG杂合突变(疑似致病性变异)。结合患儿临床表现、病理及基因检测结果确诊为肝型GSD Ⅳ。结论新发现GEB 1基因c. 1694 GA的致病性杂合突变,丰富了GSD Ⅳ型在中国人群的突变谱。     

Regional specificity of manganese accumulation and clearance in the mouse brain: implications for manganese‐enhanced MRI

Manganese‐enhanced MRI has recently become a valuable tool for the assessment of in vivo functional cerebral activity in animal models. As a result of the toxicity of manganese at higher dosages, fractionated application schemes have been proposed to reduce the toxic side effects by using lower concentrations per injection. Here, we present data on regional‐specific manganese accumulation during a fractionated application scheme over 8 days of 30 mg/kg MnCl₂, as well as on the clearance of manganese chloride over the course of several weeks after the termination of the whole application protocol supplying an accumulative dose of 240 mg/kg MnCl₂. Our data show most rapid accumulation in the superior and inferior colliculi, amygdala, bed nucleus of the stria terminalis, cornu ammonis of the hippocampus and globus pallidus. The data suggest that no ceiling effects occur in any region using the proposed application protocol. Therefore, a comparison of basal neuronal activity differences in different animal groups based on locally specific manganese accumulation is possible using fractionated application. Half‐life times of manganese clearance varied between 5 and 7 days, and were longest in the periaqueductal gray, amygdala and entorhinal cortex. As the hippocampal formation shows one of the highest T₁‐weighted signal intensities after manganese application, and manganese‐induced memory impairment has been suggested, we assessed hippocampus‐dependent learning as well as possible manganese‐induced atrophy of the hippocampal volume. No interference of manganese application on learning was detected after 4 days of Mn²⁺ application or 2 weeks after the application protocol. In addition, no volumetric changes induced by manganese application were found for the hippocampus at any of the measured time points. For longitudinal measurements (i.e. repeated manganese applications), a minimum of at least 8 weeks should be considered using the proposed protocol to allow for sufficient clearance of the paramagnetic ion from cerebral tissue. Copyright © 2012 John Wiley & Sons, Ltd.     

Mitochondrial membrane protein-associated neurodegeneration: a case report and literature review

Mitochondrial membrane protein-associated neurodegeneration (MPAN) is an autosomal recessive disorder caused by mutation in the C19orf12 gene. We report a compound heterozygous c.[32C>T];[205G>A;424A>G] (p.[Thr11Met];[Gly69Arg;Lys142Glu]) Czech patient who manifested with right foot dystonia, impaired handwriting, attention deficit, and signs of iron accumulation on brain MRI. Gradually, he developed dysarthria, spastic-dystonic gait, pedes cavi, and atrophy of leg muscles. Additionally, we report demographic parameters, clinical signs, and allelic frequencies of C19orf12 mutations of all published MPAN cases. We compared the most frequent mutations, p.Thr11Met and p.Gly69ArgfsX10; the latter was associated with younger age at onset and more frequent optic atrophy in homozygotes.     

脂质蓄积指数和内脏脂肪指数对成年人代谢综合征的预测价值研究

背景　脂质蓄积指数（LAP）和内脏脂肪指数（VAI）是反映个体脂肪分布及内脏脂肪蓄积程度的重要指标，与肥胖相关的慢性代谢性疾病关系密切。目的　探讨LAP和VAI与成年人代谢综合征（MS）的相关性，并评估LAP、VAI对MS的预测价值。方法　纳入2018年9月至2019年5月在中日友好医院体检中心进行体检的708例受试者，其中MS患者249例（MS组），非MS患者459例（非MS组），比较两组患者LAP、VAI及相关生化指标。根据LAP、VAI四分位数将受试者进行分组（L1组、L2组、L3组、L4组各177例；V1组、V2组、V3组、V4组各177例），比较各组MS及其组分发生率。采用多因素Logistic回归分析计算不同LAP、VAI受试者MS的发生风险，并分别绘制不同性别LAP、VAI、腰围（WC）、体质指数（BMI）预测MS发生风险的受试者工作特征（ROC）曲线。结果　LAP和VAI与成年人MS发生率呈高强度正相关（Cramer's V=0.585、0.577）。多因素Logistic回归分析结果显示，在调整各危险因素后，L3组、L4组MS发生风险仍高于L1组，V3组、V4组MS发生风险仍高于V1组（P<0.001）。ROC曲线分析结果显示，男性LAP、VAI预测MS发生风险的ROC曲线下面积（AUC）分别为0.831〔95%CI（0.795，0.867）〕、0.825〔95%CI（0.788，0.863）〕，临界值分别为52.03、1.99；女性LAP、VAI预测MS发生风险的AUC分别为0.887〔95%CI（0.834，0.940）〕、0.886〔95%CI（0.827，0.945）〕，临界值分别为54.84、2.54。结论　LAP、VAI与成年人MS发生率呈高强度正相关，随着LAP、VAI增高，MS发生风险亦增高；LAP、VAI对MS有良好的预测价值，联合WC和BMI能有效预测MS。