OBJECTIVE:To establish an HPLC method for the determination of the contents of Ligustrazine in rat's plasma,brain and liver.METHODS:Ligustrazine was separated on Hypersil ODS-C18 column with aspirin as internal standard.The mobile phase consisted of methanol-1.5% glacial acetic acid solution(45∶55,V/V)at a flow rate of 1.0 mL?min-1.The UV detection wavelength was 279 nm.RESULTS:The linear range of ligustrazine in rat's plasma,brain and liver was 0.006 25～7.813 ?g?mL-1,The lowest detectable limits were 0.5 ng?mL-1,1.55 ng?mL-1,and 1.55 ng?mL-1 and the average recoveries were 97.26%,96.44%,and 95.43% respectively with RSD at 3.40%,4.19% and 4.94%,respectively.CONCLUSION:With good linearity,precision and recovery,the method is sensitive and simple,and suitable for pharmacokinetic study and the research of Ligustrazine preparation.

Biotechnology supremacy is a newly-advanced power theory. It is a superior dominance of military biotechnological application based on the microcosm of life structure within a certain period of time. The advancement of biotechnology supremacy and modern biotechnology has created the concept of bio-micro-frontier, which involves information and defense resources of all living ultra-micro-organisms with national and regional characteristics. Being feasible both in theory and practice, the implementation of bio-micro-frontier system is strategically important. This article explores the implementation of bio-micro-frontier in terms of strategy and tactics, which will add a unique dimension to future military transformation and active defense.

Acute Disease ; Adolescent ; Adult ; Bridged-Ring Compounds ; poisoning ; Female ; Humans ; Male ; Middle Aged ; Poisoning ; therapy ; Treatment Outcome

The medium and process parameters were optimized in batchaminoglycoside antibiotic JI-20A fennentation. The optimal medium consists mainly of comstarch 60g/L, peanut meal 30g/L, com slurry 8g/L, maltose 10g/L, inorganic compound and amylase moderate , methionin 1g/L and cobalt chloride 6?g/mL. It was significant to adjust medium pH after autoclaving and oxygenate the fennentation medium for the cell growth and JI-20A product.

Objective Overexpressions of epidermal growth factor(EGF)and EGF receptor have been associ- ated with progression and invasive phenotype of pancreatic cancer.However,the underlying molecular mechanism by which EGF worked in pancreatic cancer cells has not been completely understood.In this study,effect of EGF on the invasion and metastasis of pancreatic cancer cells and its regulatory mechanism were investigated.Methods The effects of EGF on the proliferation,adhesion and invasion of pancreatic cancer cells were detected by WST-1 prolif- eration assay,adhesion assay and invasive assay,respectively.The activity and expression of MMP-2 and MMP-9 were examined by zymography,Western blot and RT-PCR,respectively.The activity of NF-?B was examined by EMSA.Results EGF could significantly promote the invasiveness of pancreatic cancer cells but did not affect cell proliferation or adhesion.The expressions of NF-?B and MMP-9 were significantly increased by EGF,but EGF did not affect the activity and expression of MMP-2.Furthermore,EGF stimulated the NF-?B binding activity.Pre- treatment with NF-?B inhibitors,pyrrolidine dithiocarbamate(PDTC),could significantly inhibit the activity of NF-?B induced by EGF.Meanwhile,the EGF-induced expression and activity of MMP-9,as well as cell invasiveness were also inhibited by NF-?B inhibitor.Conclusion EGF could increase the expression and promote the invasiveness of MMP-9 via the activation of NF-?B in pancreatic cancer cells,which implies that NF-?B inhibitant,such as PDTC,may diminish the invasiveness of pancreatic cancer cells.

The medicinal history of Pien Tze Huang is long, and it is the only "double top secret" variety of technology and formula at present. It has the effects of clearing heat and detoxifying, detumescence and pain, cooling blood and removing blood stasis. At present, researchers have analyzed and identified some compounds in Pien Tze Huang and its precious medicinal materials, such as Panax notoginseng, calculus bovis, snake gall and musk, and conducted activity screening, pharmacokinetics and pharmacological related studies on these chemical components. It was found that Pien Tze Huang had a significant effect on the treatment of acute and chronic hepatitis, ulcer, colon cancer, liver cancer and other diseases. The purpose of this paper is to systematically discuss the research achievements of researchers in recent years on the material basis, pharmacological effects and clinical application of Pien Tze Huang, with a view to providing ideas for the further research of Pien Tze Huang.

Objective To retrospectively evalute the value and accuracy of adenosine stress and rest SPECT myocardial perfusion imaging. Methods A total of 1858 patients who were suspected or known for coronary artery disease (CAD) underwent 99Tcm-methoxyisobutylisonitrile ( MIBI ) myocardial perfusionSPECT with adenosine infusion using the standard 2-day protocol. Images were interpreted by two or more experienced nuclear medicine physicians . Coronary angiography was carried out in all patients within one month. Kappa test was used to analyze the correlation between the two imaging studies. Results By coronary angiography, there were 957 patients diagnosed of CAD (one-, two-, three-vessel disease: 506,256,195, respectively) and 901 normal. Stenosis was found in 1603 vessels, including left anterior descending coronary artery (LAD): 765, left circumflex coronary artery (LCX): 399 and right coronary artery (RCA): 439. By adenosine induced stress myocardial perfusion imaging, 876 patients were diagnosed of myocardial ischemia ( sensitivity: 876/957, 91.54% ) and 651 patients had negative findings ( specificity:651/901,72.25 % ). The positive and negative predictive values were 77.80% ( 876/1126 ) and 88.93% (651/732), respectively. The correlation coefficient between the two imaging studies was 0.641. The vessel-based sensitivity was 81.31% (622/765) for LAD, 56.64% (226/399) for LCX and 70.62% (310/439) for RCA, respectively. The sensitivity for detection of one-, two-, three-vessel stenosis was 87.55% (443/506), 94.92% (243/256) and 97.44% (190/195), respectively. The side-effects was mild and transient with an incidence rate of 84.12% ( 1563/1858), without major cardiac events. Conclusion Stress myocardial perfusion imaging induced by adenosine is reliable for the evaluation of myocardial blood supply in CAD patients.

From June 2007 to June 2009, 133 patients underwent esophageal resection, among them 64 cases received esophageal reconstruction with narrow gastric tube (NGT) and 69 received esophageal reconstruction with whole stomach (WS).The postoperative quality of life (QOL) in 6 months of both groups was investigated.The study found that there were 3 cases in WS group having leakage, while no one in NGT group, the weight loss, regurgitation and chest-stomach syndrome in NGT group were superior to those in WS group, there were no statistical differences in activities of daily life, emotional functions, food intake, dysphagia between two groups.The study indicates that the quality of life in NGT group is superior to that in WS group.

OBJECTIVETo investigate the cost-effectiveness of fish oil in patients undergoing major surgery and those with systemic inflammatory response syndrome(SIRS).

METHODSA retrospective study was conducted in patients undergoing major surgery and those with SIRS on admission in the Zhongshan Hospital from January 2008 to December 2011. Fish oil group was enrolled and matched to control group by 1:2 for gender, age, diagnosis, and surgical procedure. There were 220 pairs of patients who were not admitted to ICU, 102 pairs of patients admitted to ICU, and 66 pairs of patients with SIRS. The clinical outcomes and costs were measured and cost-effectiveness analyses were conducted.

RESULTSThe clinical outcomes and costs showed no significant difference between the fish oil group and the control group in those patients who were not admitted to ICU(P>0.05). Fish oil fat emulsion supplementation significantly reduced the length of total hospital stay, postoperative hospital stay, ICU stay, re-operation rate, infection rates, perioperative mortality in patients admitted to ICU and those with SIRS(P<0.05). The cost-effectiveness ratio of non-reoperation rate, non-infection rate, and survival rate were lower in those patients receiving fish oil fat emulsion as compared with those without fish oil administration. Fish oil fat emulsion supplementation could reduce cost-effectiveness ratios of non-reoperation rate, non-infection rate and survival rate by 105 RMB, 160 RMB, and 89 RMB respectively in major surgical patients who admitted to ICU, and by 670 RMB, 280 RMB, and 220 RMB respectively in SIRS patients.

CONCLUSIONSAddition of fish oil fat emulsion to clinical nutrition may have positive effects on critically ill patients. It seems that the effects of fish oil fat are strongly related to the severity of patient's underlying disease. Fish oil fat emulsion supplementation shows acceptable cost-effectiveness ratio and pharmacoeconomic value.

Aged ; Cost-Benefit Analysis ; Fat Emulsions, Intravenous ; economics ; therapeutic use ; Female ; Fish Oils ; economics ; therapeutic use ; Humans ; Male ; Middle Aged ; Parenteral Nutrition ; economics ; methods ; Postoperative Care ; Retrospective Studies ; Surgical Procedures, Operative ; Systemic Inflammatory Response Syndrome ; therapy

China ; epidemiology ; Humans ; Influenza, Human ; epidemiology ; Population Surveillance ; methods ; Time Factors