类鼻疽骨、关节及骨髓感染的临床特点

目的 分析类鼻疽骨、关节及骨髓感染的临床特征,为类鼻疽骨、关节及骨髓感染的诊治提供参考,减少漏诊和误诊,提高患者预后.方法 回顾性分析21例类鼻疽骨、关节及骨髓感染患者的流行病学和临床特点;采用Etest法检测致病菌对抗菌药物的敏感性.结果 21例患者中男19人,女2人,年龄范围35～80岁,8人职业为农民,11人在台...     

New flavonoids and other constituents from Lespedeza cuneata

Two new flavonoids, 6,8,3′,4′-tetrahydroxy-2′-methoxy-7-methylisoflavanone (1) and 6,8,3′,4′-tetrahydroxy-2′-methoxy-6′-(1,1-dimethylallyl)-isoflavone (2), were isolated from the 95% ethanolic extract of the dried roots of Lespedeza cuneata together with betulinic acid (3), β-sitosterol (4), hexacosanoic acid 2,3-dihydroxy-propyl ester (5), which were isolated from this plant for the first time. Their structures were elucidated by spectral analysis.     

Dynamic Analyses of PrP and PrPsc in Brain Tissues of Golden Hamsters Infected With Scraple Strain 263K Revealed Various PrP Forms

Objective To expatiate dynamic changes in hamsters infected with scrapie strain 263K, to observe the presence and aggravation of various forms of PrP and PrPSc during incubation period, and to probe primarily the relationship between the onset of clinic manifestations and the presence of different PrPSc forms. Methods Hamster-adapted scrapie strain 263K was intracerebrally inoculated into hamsters. Different forms of PrP and PrPSc were monitored dynamically by Western blot and immuno-histochemical assays. The presence of scrapie-associated fibril (SAF) was assayedby electron microscopy analysis (EM) and immuno-golden EM. Results PrPSc was initiallydetected in the brain tissues of the animals in 20 days post-inoculation by immunohistochemistry and 40 days with Western blot. Quantitative evaluations revealed that the amounts of PrP and PrPSc inbrain tissues increased along with the incubation. Several high and low molecular masses of PrP wereseen in the brains of the long-life span infected animals. Deglycosylation assays identified that the truncated PrP in the infected brains showed similar glycosylation patterns as the full-length PrP. The presence of short fragments was seemed to relate with the onset of clinical conditions. Conclusion These results indicate that infectious agents exist and accumulate in central nerve system prior to the onset of the illness. Various molecular patterns of PrPSc may indwell in brain tissues during the infection.     

电针刺激对脑缺血大鼠神经干细胞分化的影响

目的研究电针刺激对脑缺血大鼠神经干细胞分化的影响。方法制作大鼠大脑中动脉闭塞模型(MCAO),随机分为电针组和模型组。电针组电针刺激"百会"和"风府"穴,模型组不予电针。免疫荧光双标法检测5-溴脱氧尿苷-神经元特异性烯醇化酶(BrdU/NSE)和5-溴脱氧尿苷-胶质纤维酸性蛋白(BrdU/GFAP)阳性细胞的表达。结果两组间BrdU/NSE阳性细胞表达比较差异有显著性(F=1 069.23,P<0.01);组内不同时间BrdU/NSE阳性细胞表达比较差异均有显著性(F=1.90、355.51,P<0.01)。组间BrdU/GFAP阳性细胞表达比较差异有显著性(F=28 100.21,P<0.01);组内不同时间BrdU/GFAP阳性细胞表达比较差异有显著性(F=6.50、90.18,P<0.01)。结论电针刺激能促进脑缺血大鼠NSE和GFAP的表达。     

小柴胡汤加味对甲型HIN1流感轻症病人的效果

目的 探讨甲型 HIN1 流感轻症病例临床特征及小柴胡汤加味治疗的效果.方法 甲型 HIN1 流感轻症病人 80 例,随机分成两组,中医组 40 例,应用小柴胡汤加味治疗,每天 1 付分2次口服,疗程5 d;抗病毒组40 例,给予奥司他韦每次75 mg、每天2次治疗,疗程5d.观察并比较两组疗效.应用RT-PCR进行咽...     

慢性肾脏病与胰岛素抵抗的关系

目的 探讨慢性肾脏病(CKD)与胰岛素抵抗的关系.方法 选取2006年7月-2008年12月在我科住院治疗的CKD 3～4期病人56例,以同期35例健康体检者作为正常对照组.测量两组身高、体质量、腰围、血浆葡萄糖、胰岛素、三酰甘油、总胆圊醇、高密度脂蛋白胆固醇、超敏C反应蛋白和白细胞介素6,计算稳态模型胰岛素抵抗指数(...     

Functions of the MMR system and special roles of mutL in bacterial evolution

DNA mismatch repair guards the integrity of the genome of almost all organisms by correcting DNA biosynthetic errors and by ensuring the fidelity of homologous genetic recombination. MutL is one of the important proteins involved in mismatch repair system. It has been suggested to function as a master coordinator or molecular matchmaker because it interacts physically with MutS, the endonuclease MutH, and DNA helicase UvrD. It also binds to DNA and has an ATPase activity. MutL defective bacteria strains have elevated mutation rates and it has been reported recently that MutL defect may have an important impact on bacterial evolution.     

Psychophysiological Effects of Bamboo Piants on Adults

The present study was conducted to clarify the psychophysiological relaxation effects of viewing bamboo on university students. Forty healthy Chinese participants enrolled in this study to clarify the psychophysiological relaxation effects of viewing bamboo. The effects of visual stimulation using a pot both with and without a bamboo were recorded by measuring the student's blood pressure, EEG and STAI. We observed that viewing bamboo plants resulted in significantly lower systolic(female, P <0.001; male, P < 0.001;P < 0.05) and diastolic (female, P < 0.001; male, P < 0.001;P < 0.05) blood pressures, but no changes in the pulse rate (female, P = 0.09; male, P = 0.07;P > 0.05)were observed. The results of the EEG analysis indicated brainwave variation (all P < 0.05) and lower anxiety scores (P <0.01) after 3 min of viewing bamboo compared with the control. These findings indicate that visual stimulation with bamboo plants induced psychophysiological relaxation effects on adults.     

佐剂关节炎大鼠脊髓背角内磷酸化ERK在电针夹脊穴镇痛中的变化

目的观察电针华佗夹脊穴对佐剂性关节炎大鼠脊髓背角内磷酸化ERK表达的影响,从信号转导的角度研究电针镇痛可能的作用机制。方法以完全福氏佐剂（CFA）致炎性痛大鼠模型,采用免疫组化技术,分别检测正常对照组、模型组、及电针治疗组SD大鼠脊髓背角内磷酸化ERK表达。结果与空白对照组相比,造模后30min、24h及48h后,模型组大鼠痛阈下降,同时脊髓背角内磷酸化ERK明显增多（P〈0．01）;电针治疗组大鼠在电针夹脊穴治疗后,30min、24h、48h后行痛阈检测发现其痛阈下降,但与模型组相比痛阈明显提高,脊髓背角内ERK磷酸化水平亦较模型组明显降低（P〈0．01）。结论电针华佗夹脊穴可明显缓解佐剂性关节炎大鼠炎性痛,提高痛阈,而ERK可能为电针镇痛中一个重要的信号转导分子,其磷酸化在炎症痛敏及电针镇痛过程中起重要作用。