Objective:To study the application of partial least squares (PLS) in spectrophotometry,and to simultaneously determine four synthetic food colors with PLS.Methods:? max for Tartrazine,sunset yellow,ponocean 4R and amaranth were 428?2nm,482?2nm,508?2nm,520?2nm respectively,which revealed significant overlapping of simultaneous determination of mixture of four synthetic food colors by spectrophotometry,whithout any preliminary chemical separation.Results:The mean recoveries and relative standard deviation(RSD) for each sample were 100.6%,100.5%,99.5%,101.1% and 1.28%,1.11%,1.01%,1.96%,respectively.The actual results of two kinds of samples were also satisfactory.Conclusion:The patial least squares may provide a new approach to determination of the content from multi-component spectroscpic data whithout any preliminary chemical separation.

In the past few decades, accumulated experimental and clinical evidences suggest that cyclic guanosine monophos-phate (cGMP) plays an important role in atheroselerosis. Vasodilator-stimulated phosphoprotein (VASP), a major downstream compo-nent of the cGMP signaling cascade, is an actin-binding protein which regulates cell adhesion, morphology change, cell motility and cell proliferation. It has shown that VASP is associated with many factors influencing atherosclerosis, and it plays an important role in the genesis and development of atherosclerosis. The relationships between the occurrence of atherosclerosis and risk factors for athero-sclerosis such as hypertension, hyperglycaemia and hyperlipidemia are reviewed in this article.

Objective To investigate the value of T cell subsets predicting stroke-associated infection (SAI) in patients with acute ischemic stroke.Methods The consecutive patients with acute ischemic stroke within 36 hours after symptom onset were included.The peripheral venous blood samples were collected the next morning after admission.A flow cytometry was used to detect T cell subsets.The patients were divided into either an infected group or a non-infected group according to whether they had infection or not in hospital within 2 weeks.The information of the risk factors for ischemic stroke was collected,and the relationship between SAI and related risk factors was analyzed.Results A total of 55 patients with acute ischemic stroke were included,28 of them were in the infected group and 27 were in the non-infected group.The percentages of CD3 +T cells (63.42 ± 8.84％ vs.69.55 ± 10.05％ ; P =0.022) and CD4+ T cells (35.34 ± 7.10％ vs,40.46 ±7.24％; P =0.014),and CD4+/CD8+ ratio (1.23 ±0.38 vs.1.55 ±0.56; P =0.023) in the infected group were significantly lower than those in the non-infected group.The multiple regression analysis showed that the higher NIHSS score (odds ratio [ OR] 1.295,95％ confidence interval [ CI] 1.084 - 1.574; P =0.004) and t he decreased percent age of CD4+ T cells (OR 0.874,95 ％ CI 0.784 - 0.974,P =0.015) were the independent predicting factors for SA1.The percentage of CD4+ T cells ＜ 70.35％ had the best predictive value for the occurrence of SAI (sensitivity 77.8％ and specificity 92.3％).Conclusions The decreased proportion of the auxiliary T cells after the onset of acute ischemic stroke may increase the susceptibility of SAI.The detection of T cell subsets may predict the SAI in a certain degree.

Objective To evaluate the effiicacy of nasotracheal intubation using blind tracheal intubation device and end-tidal carbon dioxide monitoring technique in patients with difficult airway.Methods Sixty ASA Ⅰ or Ⅱ patients of both sexes,aged 35-60 yr,weighing 55-75 kg,requiring nasotracheal intubation,undergoing selective oral and maxillofacial surgery,were involoved in this study.All of them were expected to have difficuh airway such as mouth opening ＜ 3 cm,neck upward degree ＜ 30° and Mallampati classification Ⅲ or Ⅳ,The patients were randomly divided into 2 groups(n =30):group Ⅰ received tracheal intubation with the blind tracheal intubation device and group H received tracheal intubation with the blind intubation device combined with end-tidal carbon dioxide monitoring technique.The number of successful intubation,the inlubation time and adverse effects during intubation(epistaxis,tachycardia,hypertension and hypoxemia)and after operation(sore throat and hoarseness)were recorded.Results The rate of successful intubation in the two groups was 100％.Tachycardia,hypertension,hypoxemia and hoarseness were not found in the two groups.Compared with group I,the rate of successful intubation at first attempt was significantly increased,the intubation time was significantly shortened,and the incidence of epistaxis and sore throat was decreased in group Ⅱ(P ＜ 0.05).Conclusion The blind intubation device combined with end-tidal carbon dioxide monitoring technique used in diffficult airway can shorten the intubation time,increase the success rate of tracheal intubation,and decrease the occurrence of adverse effects.

Objective Through analysis the amount and the types for the bacterial in the conjunctival sac between the warm meibomian gland massage and routine preoperative preparation for the inner eye operations,to compare the bacterial state before and after the nursing intervention,as to analysis of preoperative administration of the routine preoperative preparation on the effectiveness of prevention of postoperative intraocular inflammation,and so on peri operation period nursing intervention is effective in reducing or preventing endophthalmitis.Methods 40 patients(40 eyes) undergoing eye operation during March to December of 2013 in our hospital,they were divided into the experimental group and the control group,with preoperative warm meibomian gland massage the experimental group based in the implementation of internal eye operation on routine preparation.Based on all the patients in group (V1),on the morning of surgery (V2) before operation,after disinfection(V3),before the end of operation(V4),after the next morning(V5) and after 1 weeks of operation (V6) of the 5 conjunctival sac sampling cultured conjunctival sac fungi and bacteria population analysis.Results Two groups of cultured conjunctival sac and there were significant differences between the V1 and V6 for both groups in the amount and the tapes of the bacterial.Conclusions The inner eye operation patients with warm meibomian gland massage can effectively reduce or inhibit the bacterial amount after operation in the conjunctival sac,effectively reduce the occurrence of postoperative endophthalmitis of hidden dangers,this procedure should be schduled in the standerand SOP for the peri--operative preparation for the inner eye operations.

OBJECTIVE:To establish a method for the contents determination of ginsenoside Rg1,ginsenoside Re,ginsenoside Rb1 and geniposide in Panax ginseng processed by Gardenia jasminoides. METHODS:HPLC was performed on the column of Agi-lent TC18 with mobile phase of acetonitrile-0.1% phosphoric acid,(gradient elution,ginsenoside Rg1,ginsenoside Re,ginsenoside Rb1)and acetonitrile-water(13∶87,V/V,geniposide)at a flow rate of 1.0 ml/min,the detection wavelength was 203 nm for ginsen-oside Rg1,ginsenoside Re,ginsenoside Rb1 and 238 nm for geniposide,column temperature was 40 ℃,and injection volume was 20 μl. RESULTS:The linear range was 0.418-3.762 μg for ginsenoside Rg1(r=0.999 8),0.270-2.430 μg for Re(r=0.999 8), 0.398-3.582 μg for ginsenoside Rb1(r=0.999 7)and 0.606-3.030 μg for geniposide(r=0.999 7);RSDs of precision,stability and reproducibility tests were less than 2.0%;recoveries were 97.86%-101.47%(RSD=1.29%,n=6),96.21%-100.11%(RSD=1.42%,n=6),96.24%-100.48%(RSD=1.57%,n=6)and 97.76%-102.44%(RSD=1.71%,n=6). CONCLUSIONS:The meth-od is simple with good precision,stability and reproducibility,and can be used for the contents determination of ginsenoside Rg1, ginsenoside Re,ginsenoside Rb1 and geniposide in P. ginseng processed by Gardenia jasminoides.

Background Glaucoma is a kind of psychosomatic disorder.Investigating the psychological and behavioral characteristics of glaucoma patients has important implication for the prevention and treatment of the disease.Objective Present study aimed to characterize the personality profile of initial diagnosed glaucomatous patients.Methods Eighty-seven patients with primary open angle glaucoma (POAG),ninety-two patients with primary angle-closure glaucoma (PACG) and eighty-nine normal controls (normal control group) were enrolled in this study from January 2008 to May 2014 in Peking University People 's Hospital.Clinical and demographic information which could relate to personality type was collected by filling in Symptom Checklist 90 (SCL-90),Life Event Scale (LES),Eysenck Personality Questionnaire (EPQ),Self-Rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS) voluntarily under the informed consent.The psychological,personality and behavior characteristics of the individuals were analyzed and compared among the different populations.Results In SCL-90,the scores of compulsivity,interpersonal sensitivity,depression,anxiety,hostility,phobic anxiety,paranoid ideation and psychoticism inpatients with primary glaucoma were significant different among the three groups (all at P＜0.01),and the scores were significantly higher in the patients of the POAG group and PACG group than those in the normal control group,and the scores were increased in the PACG group compared with the POAG group (all at P＜0.05).In LES,the scores of family events,social intercourse and other events,life events,stress response were significantly different among the three groups (P =0.032,0.002,0.001,0.000),and these scores were significant higher in the POAG group and PACG group compared with the normal control group,and the PACG group also had a significantly greater frequency of clinically abnormal score than the POAG group (all at P＜0.05).EPQ data showed that the scores of psychology and nervousness in the POAG group and the PACG group were higher than those in the normal control group (all at P＜0.05),but no significant difference were found in extroversion and stability of the personality among the three groups (P=0.321,0.315).The total scores of SAS and SDS were considerably higher in the POAG group and the PACG group compared with the normal control group or the PACG group compared with the POAG group (all at P＜0.05).The incidences of anxiety and depression were elevated in the POAG group and the PACG group in comparison with the normal control group (x2 =15.520,P =0.000 ; x2 =14.870,P =0.000).Conclusions The personality and behavioral factors are associated with the pathogenesis,development and therapy of primary glaucoma.The anxiety,depression and stronger stress response are found in glaucoma patients,especially PACG patients.

Accumulating evidences have demonstrated that there are several markers that can be used to recognize cancer stem cell, such as cell surface marker, enzymatic marker,gene expression marker and some functional markers. Cancer stem cell is characterized by multidrug resistance, enhanced DNA repair and antiapoptotic ability ,and some in vivo niche features that may make cancer cells resistant to conventional therapy.The increasing understanding of aberrantly expressed molecules and signaling pathways in TSC may provide the theoretical foundation for designing of target therapeutic strategies for TSC.