Objective To evaluate the performance of a prediction system built with LASSO regression model and Baidu search query data.Methods Based on a strategy using a combination of Bagging and multi-measure optimization method,this study proposed an ensemble LASSO regression model which had an obviously improved performance,and applied it to predict the epidemics of influenza in China.Results The results showed that the improved model had significantly smaller prediction error rates than that of the conventional LASSO regression model for influenza cases during the study period of 2011-2015.This study designed an open source R package,SparseLearner,which was conveniently used and further developed.Conclusion The combination of Bagging and multi-measure optimization method is an efficient strategy to improve the performance of LASSO regression model.The proposed ensemble LASSO regression model in this study can be applied for the prediction of infectious diseases epidemics.

Objective To explore the application of evaluation of measurement uncertainty in routine coagulation assays based on the data of internal quality control (IQC) and results of external quality assessment (EQA) .Methods Data of clinical coagulation assays of clinical laboratory of Xiangyang city hospital were collected ,Which came from six months of IQC and 3 times of EQA of ministry of health clinical laboratory center from 2012 to 2013 .The combined and expanded uncertainties of 3 measurements(PT , APTT and Fbg) were evaluated according to CNAS top-downapproach .Results When PT were in 12 .72 s and 21 .04 s ,its ex-panded uncertainty were 1 .06 s and 1 .96 s ,and APTT in 36 .6 s and 50 .6 s were 2 .59 s and 5 .30 s ,and Fbg in 3 .32 g/L was 0 .30 g/L .Conclusion Evaluation of measurement uncertainty by using internal quality control data and EQA results for routine coagula-tion detection index is economical and practical and acceptable way ,with good clinical practice .

Objective To compare the discrepancy between the new (2012) and the old (1992) Atlanta classification criteria for defining severity, organ failure and local complications in patients with acute pancreatitis (AP).Methods Demographic, clinical and laboratory data of 2 305 consecutive AP patients with onset less than 3 days, were collected between January 2005 to December 2013 in the First Affiliated Hospital of Nanchang University.Severity, organ failure and pancreatic local complications were respectively classified by the old Atlanta classification and the new revised Atlanta classification.Multi-factor scoring system and single serum marker were recorded and calculated using the acute pancreatitis database.Results In 2 305 patients with AP, there were 301 cases (13.1％) diagnosed with acute respiratory failure, 136 cases (5.9％) with shock, 105 cases (4.6％) with acute renal failure, 296 cases (12.8％) with gastrointestinal bleeding, based on the old Atlanta classification criteria.According to the severity, 900 cases (39.0％) were classified as mild acute pancreatitis (MAP), 1 405 cases (61.0％) as severe acute pancreatitis (SAP).However, based on the new Atlanta classification criteria, there were 686 cases (29.8％) with acute respiratory failure, 129 cases (5.6％) with acute renal failure, 107 cases (4.6％) with circulatory failure.Consequently, 998 cases (43.3％) were classified as MAP, 937 cases (40.7％) as moderately severe acute pancreatitis (MSAP), 370 cases (16.1％) as SAP.The incidence of respiratory failure was lower than that of the old standard.In SAP patients by new criteria, the discharge rate in critical condition and mortality were not only higher than those in MSAP patients (17.0％ vs 4.1％, 4.1％ vs 1.5％, respectively , all P ＜ 0.001), but also higher than those in SAP patients by the old classification (17.0％ vs 7.2％ ,4.1％ vs 2.1％, all P ＜ 0.001).Conclusions The diagnostic criteria of organ failure are different between the new and old Atlanta classification.The SAP patients classified by the new standard have worse outcome than those by the old standard.More attention needs to be paid to critical patients stratified by the new standard.

Objective To discuss the effects of proteinase-activated receptor-2( PAR-2 )agonists on intestinal SIgA levels in rats with severe acute necrotizing pancreatitis( SAP). Methods This study established SAP rat model and observed the levels of TNF-α and IL-6 in intestinal mucosa,SIgA content in intestinal mucus and histopathological changes of intestinal mucosa 6,12,and 24 h after establishment of model. The univariate analysis was used to compare the difference among groups. Linear correlation analysis was used to compare correlation between inflammatory mediators( TNF-α,IL-6 )and SIgA content in intestinal mucus,as well as the histopathological scores of intestinal mucosa. Results The level of TNF-α and IL-6 in intestinal mucosa and histopathological scores of intestinal mucosa were all significantly increased but SIgA content was decreased in model group at each time point after establishment of model,as compared with the sham-operated group(P﹤0. 05). The level of TNF-α and IL-6 in intestinal mucosa and histopathological scores of intestinal mucosa were all significantly decreased while SIgA content in intestinal mucus increased in pretreatment group at each time point after establishment of model,as compared with the model group(P﹤0. 05). There was a positive relationship between inflammatory mediators(TNF-α,IL-6)in intestinal mucosa and histopathological scores of intestinal mucosa(P﹤0. 01). There was a negative relationship between inflammatory mediators(TNF-α,IL-6)and SIgA content in intestinal mucus(P﹤0. 05). Conclusion Intestinal mucosa immune barrier was impaired in the early stage of SAP in rats. PAR-2 agonist has therapeutic effects on intestinal mucosa immune barrier,which is related to the inhibition of excessive release of inflammatory mediators( TNF-α and IL-6)in rats with SAP.

Objective To observe the inhibition of piperlongumine in vitro on platelet aggregation and blood coagulation tests for children,to provide the experimental basis for clinical medication.Methods Venous blood samples from 30 children were randomly devided into 5 groups,and was centrifuge to separate platelet-rich plasma (PRP).After storing in 37 ℃ thermostat water bath for 5 minutes,the PRP which have been added DMSO as blank group,and added Aspirin (10 μmol/L)as control group,and added PL (20 μmol/L),PL(100 μmol/L),PL(200 μmol/L) as different concentrations of PL groups respectively,were induced by the addition of adenosine diphosphate (10 μmol/L),collagen(2.5 μg/mL) and the arachidonic acid(500 μg/mL).Then the platelet aggregation rate of the PRP from 5 groups could be measured by turbidimetry.Blood plasma isolated from venous blood was divided into 5 groups.In the PL groups,blood plasma were mixed up with PRP concentrations of which were 5,10,20 μmol/L.In the bland group,blood plasma were mixed up with DMSO (1％).In the control group,blood plasma were mixed up with heparin sodium(35 U/mL).After storing in 37 ℃ thermostat water bath for 5 minutes,fibrinogen(FIB),prothrombin time(PT),thrombin time(TT) and activated partial thromboplastin time of different groups were detected.Results Compared to the control group,the groups which were add PL with different concentrations (20,100,200 μmol/L) showed significant inhibition on platelet aggregation induced by AA and collagen(P<0.05).PL with concentrations of 100 μmol/L and 200 μmol/L showed significant inhibition on platelet aggregation induced by ADP(P<0.05).The PT,APTT,TT of blood plasma from children had been significantly prolonged by the intervention of PL 10 μmol/L and PL 20 μmol/L(P<0.05),however,no significant change of FIB was observed.Conclusion There are inhibitory effects of PL on platelet aggregation of blood plasma from children and anticoagulant activity in this study.

Objective To study the toxicity and efficacy of induction chemotherapy followed by concurrent cisplatin chemotherapy and three dimensional conformal radiotherapy (3DCRT) for inoperable locally advanced non-small cell lung cancer (LA-NSCLC). Methods Totally 76 patients with LA-NSCLC received two cycles induction chemotherapy followed by 3DCRT with a median dose of 68 Gy (64 to 74 Gy).During the 3DCRT, cisplatin (25 mg/m2, weekly) was given intravenously for 6-7 times. Results The CR rate, PR rate and overall response rate of induction chemotherapy were 3% ,42% and 45%. After the concurrent chemoradiation, the corresponding figures were 10%, 62% and 72%. The median survival time (MST) and median progression-free survival (PFS) of all patients were 16.6 months and 10.3 months. The 1-, 2- and 3-year overall survival (OS) and PFS rates were 67% , 35% , 21% and 42% , 15%, 6%. Of patients with stage ⅢA and stage ⅢB disease,the MST were 19.7 months and 15.6 months, the PFS were 10.8 months and 9.4 months. The major treatment-related toxicities included radiation esophagitis, radiation pneumonitis, nausea ( or vomiting) and leukopenia. The major pattern of treatment failure was distant metastasis. Forty-five patients (59%) experienced the local recurrence or/and distant metastasis, including 4 (9%) with in-field failure, 38 (84%) distant metastasis and 3 (7%) malignant pleural effusion. Conclusions Induction chemotherapy followed by concurrent weekly cisplatin and 3DCRT for inoperable locally advanced NSCLC results in encouraging outcomes and acceptable tolerance.

As a part of the project for the Chinese Pharmacopoeia (2015 edition), the quality standard of Sophora flavescens root extract was investigated and established. According to the methods described in the Appendix of Chinese Pharmacopoeia (2010 edition), the water and ash inspections were carried out. The marker components trifolirhizin, sophoraflavanone G, oxymatrine and oxysophocarpine in the samples were identified by qualitative TLC. The determination of oxymatrine, matrine, oxysophocarpine and sophocarpine was conducted by HPLC and the total flavonoids were measured by ultraviolet spectrophotometry, using sophoraflavanone G as reference substance. The results indicated the spots on the plate were clear with good resolution and the contents of oxymatrine, matrine, oxysophocarpine and sophocarpine in the 13 batches of the samples were 3.87% - 11.1%, 0.970% - 4.33%, 1.30% - 2.59% and 0.260% - 1.14%, respectively. The total flavoids in the 13 batches of the samples were 3.88% - 7.93%. In the study, the validated methods were reproducible and the established quality standard was feasible, which could be used for the quality control of S. flavescens root extract and related preparations.
Chromatography, High Pressure Liquid ; Flavonoids ; analysis ; Plant Extracts ; analysis ; Plant Roots ; chemistry ; Sophora ; chemistry

The method was established study the influence of different herbal combination with Radix Aconiti in the traditional medical formulae on content of the aconite alkaloids, for elucidating the scientific basis of reducing the toxicity of aconite in traditional Chinese medical formulation. The samples for ESI-MS study were prepared by decocting a mixture of Radix Aconiti Lateralis Preparata ( RALP) with Radix Glycyrrhizae Preparata (RGP) , Radix Paeoniae Alba ( RPA) , Rhizoma Zingiberis (RZ) or Radix Et Rhizoma Rhei ( RERR) , separately, and extracting the residue of the above mentioned mixtures after decocting. The diester-diterpenoid alkaloids (DDAs) was lower in the herb couples of RALP-RGP, RALP-RPA, RALP-RZ and RALP-RERR, and lipo-alkaloids was increased in the herb couples of RALP-RGP, RALP-RPA and RALP-RZ. The reason of reducing toxic effect principle is that the components of RGP, RPA and RZ have ester-exchange reactions with DDAs in RALP to produce lipo-alkaloids of low toxicity in the decocting process of the herb couples. The combination of RALP-RERR can reduce the content of DDAs in decoction and residue due to the formation of water insoluble alkaloid compound.
Aconitine ; analogs & derivatives ; analysis ; chemistry ; Aconitum ; chemistry ; Alkaloids ; analysis ; chemistry ; Diterpenes ; analysis ; chemistry ; Drug Combinations ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Esterification ; Ginger ; chemistry ; Glycyrrhiza uralensis ; chemistry ; Hot Temperature ; Paeonia ; chemistry ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Rheum ; chemistry ; Spectrometry, Mass, Electrospray Ionization ; methods

7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide ; toxicity ; Carcinogens ; toxicity ; Cell Line, Tumor ; DNA Damage ; drug effects ; Dose-Response Relationship, Drug ; HSP70 Heat-Shock Proteins ; biosynthesis ; Humans

Objective To develop a method for the determination of total anthraquinones in Xiaofan lotion by HPLC.Methods Rhubarb anthraquinones were simultaneously separated and assayed on a Kromasil C18 column(250 mm×4.6 mm,5 μm) with the mobile phase of 0.1％phosphoric acid-methanol (15∶85) at 30 ℃.The detection wavelength was 207 nm.Results The linear relationship is good for Aloe-emodin and other five standard ingredients.The average recovery was 99.45％, RSD 1.68％.Conclusion The method is simple, rapid and accurate.It is suitable for determination of total anthraquinones in Xiaofan lotion.