蝶腭,筛前神经及鼻甲联合手术治疗常年性变应性鼻炎

在鼻内窥镜下为４０例行蝶腭、筛前神经及鼻甲联合手术治疗常年性变应性鼻炎。结果：术后１月全部患者症状消失,显效１００％;术后１年显效３３例,占８２．５％;有效６例,占１５％,有效率为９７．５％。提示该方法可广泛阻滞鼻腔副交感神经来源,降低鼻粘膜感觉灵敏部位敏感性以及感觉—副交感神经反射,破坏喷嚏反射弧的传入通路,使鼻粘膜对外界刺激敏感性下降,血管扩张减轻,腺体分泌减少,对常年性变应性鼻炎有明显疗效。     

中国健康志愿者单剂口服甲磺酸加替沙星片的药代动力学研究

目的研究中国健康成年志愿者单剂口服甲磺酸加替沙星片的药代动力学。方法按GCP指导原则设计试验方案,选择9名健康受试者分别依次单剂口服200、400、600mg三个剂量的甲磺酸加替沙星片后,应用HPLC测定血药浓度,采用3P97软件进行数据处理,求出药代动力学参数。结果受试者分别给药后,药-时曲线符合二房室模型,主要药代动力学参数Cmax分别为(2.028±0.362)mg/L、(3.749±0.446)mg/L、(4.876±0.569)mg/L;t1/2β分别为(7.489±0.806)h、(7.063±0.890)h、(7.735±0.8701)h;AUC0-t分别为(12.24±1.51)mg·h/L、(26.02±3.38)mg·h/L、(39.22±6.57)mg·h/L;原型药主要经肾排泄,48h尿药累积排泄率分别为(61.90±7.70)%、(60.90±5.70)%和(58.74±13.49)%。结论9名健康受试者分别口服给药后,药-时曲线符合二房室模型,甲磺酸加替沙星在200～600mg剂量范围内药物体内过程呈线性动力学特征而无饱和性,主要排泄途径为肾脏。     

ADULT MESENCHYMAL HAMARTOMA OF THE LIVER: A CASE REPORT

ＡＤＵＬＴＭＥＳＥＮＣＨＹＭＡＬＨＡＭＡＲＴＯＭＡＯＦＴＨＥＬＩＶＥＲ：ＡＣＡＳＥＲＥＰＯＲＴＷａｎｇＸｉａｎｇｈｕｉ王湘辉ＣｈａｉＦｕｌｕ柴福录ＤｏｎｇＬｉａｎｇ董亮ＬａｎｚｈｏｕＧｅｎｅｒａｌＨｏｓｐｉｔａｌｏｆＰＬＡ，Ｌａｎｚｈｏｕ７３００５０...     

Black tea and mammary gland carcinogenesis by 7,12- dimethylbenz[a]anthracene in rats fed control or high fat diets

Epidemiological studies suggest that tea may reduce cancer risk, and in laboratory rodents, chemopreventive effects of tea or purified extracts of tea have been demonstrated in lung, gastrointestinal tract and skin. There is some evidence of chemoprevention by tea in the mammary gland, but the data are not conclusive. In order to evaluate more fully the possible influence of black tea on 7,12-dimethylbenz[a]anthracene (DMBA)-induced mammary gland tumors in the female S-D (Sprague-Dawley) rat, three large studies were performed: experiment 1, tumorigenesis in rats fed AIN-76A diet and given 25 mg/kg DMBA and 1.25 or 2.5% whole tea extract or water to drink; experiment 2, tumorigenesis in rats given 15 mg/kg DMBA and the same diet and fluids as in experiment 1; experiment 3, tumorigenesis in rats fed control or HF (high fat, corn oil) diet and given 15 mg/kg DMBA and 2% tea or water to drink. Tea was given throughout the experiment; DMBA was given by gastric gavage at 8 weeks of age. There was no consistent effect of tea on tumorigenesis in rats fed AIN-76A diet; there was, however, evidence in experiment 3 of a reduction of tumorigenesis by tea in rats fed the HF diet. In experiment 3, rats fed the HF diet and given water showed the expected increase in tumor burden (number and weight) compared with rats fed control diet. However, rats fed the HF diet and given 2% tea showed no increase in tumor burden; their tumor burden was significantly lower than in rats fed the HF diet and given water (P < 0.01) and was not different from rats fed control diet and given water or tea. In addition, in experiment 3, the number of malignant tumors per tumor- bearing rat was increased by the HF diet in water-drinking rats (P < 0.01) but not in tea-drinking rats. Therefore, it appears that tea partially blocked the promotion of DMBA-induced mammary tumorigenesis by the HF diet.      

杜氏盐藻基因组文库的构建

目的　构建杜氏盐藻基因组文库,旨在进一步分离和研究杜氏盐藻基因的结构和功能。方法　采用改进的SDS裂解法提取杜氏盐藻基因组DNA ,通过限制性内切酶Sau3AI进行部分酶切,用T4DNA连接酶将目的片段与噬菌体EMBL3载体臂进行连接后转染大肠杆菌LE3 92。结果　体外包装构建了杜氏盐藻基因组文库,得到重组子数为2 .2×10 4,经测定文库滴度为2 .2×10 5pfu/mL。结论　构建了杜氏盐藻基因组文库,为进一步筛选盐藻重要基因及其序列分析奠定基础。     

The free radical spin trap alpha-phenyl-tert-butyl nitrone attenuates the cerebral response to deep hypothermic ischemia

OBJECTIVE: The aim of this study was to assess the role of reactive oxygen species in the impairment of cerebral recovery that follows deep hypothermic circulatory arrest. METHODS: Twelve 1-week-old piglets were randomized to placebo (control group; n = 6) or 100 mg x kg(-1) intravenous alpha-phenyl-tert -butyl nitrone, a free radical spin trap (PBN group; n = 6). All piglets underwent cardiopulmonary bypass, cooling to 18 degrees C, 60 minutes of circulatory arrest followed by 60 minutes of reperfusion, and rewarming. Cerebral blood flow and metabolism were determined at baseline before deep hypothermic circulatory arrest and after 60 minutes of reperfusion. RESULTS: In control animals, mean global cerebral blood flow (+/- 1 standard error) before circulatory arrest was 48.4 +/- 3.6 mL x 100 g(-1) x min(-1) and fell to 25.1 +/- 3.6 mL x 100 g(-1) x min(-1) after circulatory arrest (P =.001). Global cerebral metabolism fell from 3.5 +/- 0.2 mL x 100 g(-1) x min(-1) before arrest to 2.2 +/- 0.2 mL x 100 g(-1) x min(-1) after circulatory arrest (P =.0002). In the PBN group after circulatory arrest, the mean global cerebral blood flow and metabolism of 37.2 +/- 4.9 and 3.6 +/- 0.5 mL. 100 g(-1). min(-1), respectively, were significantly higher than in the control group (P <.05). Recovery of cerebral blood flow in the PBN group was 78% of pre-arrest level compared with 52% in the control group (P =.002). Global cerebral metabolism after circulatory arrest was 100% of the pre-arrest value compared with 61% in the control group (P =.01). Regional recovery of cerebral metabolism in the cerebellum, brain stem, and basal ganglia was 131%, 130%, and 115%, respectively, of pre-arrest values in the PBN group compared with 85%, 78%, and 70% in the control group (P <.04). CONCLUSIONS: Reactive oxygen species contribute to the impairment of cerebral recovery that follows deep hypothermic circulatory arrest. The use of alpha-phenyl-tert -butyl nitrone before the arrest period attenuates the normal response to ischemia and improves recovery by affording protection from free radical-mediated damage.     

Glutamate receptors within the nucleus of solitary tract contribute to pancreatic secretion stimulated by intraduodenal hypertonic saline

High-speed counter-current chromatography （HSCCC） with a solvent system composed of ethyl acetate-n-buta- nol-water （2 ： 1 ： 3, V/V/V） was used to isolate and separate two C-glycosylflavones from Patrinia villosa Juss, a traditional Chinese medicine. The separation produced 42.9 mg isovitexin and 20.1 mg isoorientin with purities of 99.3% and 98.5%, respectively as determined by high-performance liquid chromatography （HPLC） in one step elution from 250 mg crude extract, and identification was performed by MS, ^1H NMR and ^13C NMR. It is the first report of discovering isovitexin and isoorientin from the plant of Patrinia genus.     

主动加压减压心肺复苏对心跳骤停患者有效性的Meta分析

目的 系统性评价主动加压减压心肺复苏(ACD-CPR)对心跳骤停患者的有效性. 方法 利用Pubmed、Web of Science、COCHRANE LIBRARY、WanFang Data和CNKI Data等数据库检索建库至2020年1月的相关文献;严格按照纳入标准筛选文献、提取资料,应用Review Manag...     

扶正颗粒抗菌作用的实验研究

目的：探讨扶正颗粒的抗菌作用。方法：观察扶正颗粒对正常小鼠及氢化可的松、环磷酰胺所致免疫抑制小鼠对克雷伯杆菌、肺炎双球菌、金黄色葡萄球菌、溶血性链球菌死亡率的影响；观察扶正颗粒对双黄连颗粒抗免疫抑制小鼠上述细菌感染的协同作用。结果：扶正颗粒可显著延长正常及免疫抑制小鼠在被克雷伯杆菌、肺炎双球菌、金黄色葡萄球菌、溶血性链球菌感染时的存活时间，并有一定的降低死亡率的作用；扶正颗粒与双黄连颗粒联合用药，可显著降低免疫抑制小鼠上述细菌感染的死亡率，作用呈量效关系，在相同的双黄连颗粒剂量下，联合用药组优于单用双黄连颗粒组。结论：扶正颗粒具有抗菌作用。