醒脑静微乳的体外释放研究

目的:研究醒脑静微乳体外释放的特性,探讨其释药机制.方法:采用HPLC测定栀子苷含量,GC测定龙脑含量,以透析法研究醒脑静微乳的体外释放并利用药物释放模型方程拟合释放曲线.结果:微乳中水溶性成分栀子苷2h内基本释放完全,释放符合Weibell方程,脂溶性成分龙脑释放符合一级方程.结论:微乳中不同性质的药物成分释放行为存在较大差异,各成分分布于微乳的不同相中.     

穴位埋线治疗围绝经期综合征60例临床观察

目的:优选提高治疗围绝经期综合征(PMS)的方法.方法:将90例患者按2∶1的比例随机分为穴位埋线组(埋线组)60例和西药组30例,并以Kupperman指数评分的改变评价2组的临床疗效.结果:埋线组的Kupperman指数与治疗前相比,有非常显著性差异;其评分改变与西药组相比,同样有显著性差异;同时,埋线组疗效优于西药组.结论:埋线疗法对PMS有较好疗效,应用方便,无不良反应,临床当予以关注.     

Treatment of 40 cases of infantile convulsion by Tuina

Infantile convulsion is a common disease in infants and babies and often caused by scare and improper nursing. Its main clinical manifestations are fright,crying and waking up with a start, etc. Since 1998, we have treated 40 cases by Tuina. It is summarized as follows.     

推拿治疗小儿泄泻伤食证多中心随机对照研究

目的客观评价推拿治疗小儿泄泻伤食证的有效性。方法多中心、分层区组随机、平行对照临床研究方法。由3个中心协作完成小儿急性泄泻伤食证111例,包括观察组(推拿治疗)80例、对照组(培菲康和思密达治疗)31例。袪除脱落病例后,观察组76例、对照组30例。治疗2个疗程(6 d)后观察疗效。结果观察组疗效显著优于对照组(P<0.01)。2个疗程后,观察组主症总积分及分症(大便质地、质量)积分改善均优于对照组(P<0.01),而两组分症(大便次数、性状)积分改善差异无统计学意义。观察组总积分改善优于对照组(P<0.01)。结论推拿辨证疗法治疗小儿泄泻伤食证疗效优于西药(思密达+培菲康),值得推广应用。     

Gut-derived lipopolysaccharide promotes alcoholic hepatosteatosis and subsequent hepatocellular carcinoma by stimulating neutrophil extracellular traps through toll-like receptor 4

Background/AimsBinge drinking leads to many disorders, including alcoholic hepatosteatosis, which is characterized by intrahepatic neutrophil infiltration and increases the risk of hepatocellular carcinoma (HCC). Molecular mechanisms may involve the migration of bacterial metabolites from the gut to the liver and the activation of neutrophil extracellular traps (NETs).MethodsSerum samples from both binge drinking and alcohol-avoiding patients were analyzed. Mouse models of chronic plus binge alcohol-induced hepatosteatosis and HCC models were used.ResultsA marker of NETs formation, lipopolysaccharide (LPS), was significantly higher in alcoholic hepatosteatosis and HCC patients and mice than in controls. Intrahepatic inflammation markers and HCC-related cytokines were decreased in mice with reduced NET formation due to neutrophil elastase (NE) deletion, and liver-related symptoms of alcohol were also alleviated in NE knockout mice. Removal of intestinal bacteria with antibiotics led to decreases in markers of NETs formation and inflammatory cytokines upon chronic alcohol consumption, and development of alcoholic hepatosteatosis and HCC was also attenuated. These functions were restored upon supplementation with the bacterial product LPS. When mice lacking toll-like receptor 4 (TLR4) received chronic alcohol feeding, intrahepatic markers of NETs formation decreased, and hepatosteatosis and HCC were alleviated.ConclusionsFormation of NETs following LPS stimulation of TLR4 upon chronic alcohol use leads to increased alcoholic steatosis and subsequent HCC.     

Effects of Forging and Heat Treatment on Martensite Lath,Recrystallization and Mechanical Properties Evolution of 18Ni(250) Maraging Steel

The manufacturing process of maraging steel parts include forging, heat treatment and other technological links, and the strengthening mechanism at different stages is different, which has an important impact on the process design of forgings. To investigate the strengthening behavior of maraging steel, forging experiments with different deformation amounts and heat treatment conditions were carried out, and the microstructural and mechanical properties evolution of 18Ni(250) steel was analyzed. The experimental results show that the size of the martensite lath is affected by multiple factors such as the influence of grain size, recrystallization and martensite substructure fraction. The strengthening mechanism of maraging steel during forging and heat treatment is different. Forging combined with heat treatment can refine grains, and the internal defects of the original material can be better eliminated. The thermal deformation can better play the role of grain refinement compared with cyclic phase transformation, which can improve the plasticity of 18Ni(250) maraging steel.     

Efficacy of Renshen (Radix Ginseng) plus Fuzi (Radix Aconiti Lateralis Preparata) on myocardial infarction by enhancing autophagy in rats

OBJECTIVE:To elucidate the protective effects of Renshen (Radix Ginseng) and Fuzi (Radix Aconiti Lateralis Preparata) on myocardial infarction (MI)through regul...     

盐酸甜菜碱制备工艺的改进

用氢氧化钙中和氯乙酸，制得的氯乙酸钙经与过量三甲胺反应、盐酸酸化生成盐酸甜菜碱的氯化钙水溶液，经过滤、浓缩、冷却，制得盐酸甜菜碱。以氯乙酸计收率91％。