Methamphetamine (MA) is a highly addictive psychostimulant that has effects on central nervous system.Chronic MA useis linked to serious neurotoxic effects and ultimately cognitive impairments, thus understanding the effect of chronic MA use on cognitive function can improve the treatment of MA abusers and reduce MA relapse. In the present study, we summarized the main results of animal experiments, neuropsychological studies and brain imaging studies on MA abuse and cognitive impairment, which may provide the basis for future research and clinical treatment.

Objective To study the effect of TanshinoneⅡA(TSN) on vascular smooth muscle cells(VSMCs) induced by high glucose and its relationship with MAPK signal pathway.Methods After the establishment of the model of diabetic rats,the aortic of rats was isolated and cultured.DNA synthesis was analyzed by ELISA of BrdU.The activity of MAPK was measured by liquid scintillation counting.Results TSN inhibited the proliferation and DNA synthesis of vascular smooth muscle cells from diabetic rats in dose-dependent manner.TSN at the dosage of 0.5 mg/L significantly decreased the activity of MAPK as well as of U0126.Conclusion The effect of TSN on the proliferation and DNA synthesis of vascular smooth muscle cells from diabetic rats is potentially mediated by inhibition of MAPK.

Objective Through the analysis of the characteristics of serum lipids metabolism and plasma fi‐brinogen levels in patients with sudden hearing loss ,to investigate the relationship between them with sudden deaf‐ness .Methods A retrospective analysis of 180 cases of patients with sudden deafness (SHL group) ,depending on the type of auditory threshold curve divided into low intermediate frequency drops group (low intermediate frequency group) and 40 cases ,the high frequency drop group (high frequency) 90 cases ,all frequency drop group (group all frequency) 50 cases ,and drawing 180 cases in the same period of hospitalization deviated septum ,vocal cord polyp patients as control group .All patients'triglyceride (TG) ,total cholesterol (TC) ,low -density lipoprotein choles‐terol (LDL -C) ,high density lipoprotein cholesterol (HDL -C) ,glucose (Glu) ,plasma fibrinogen (FIB ) levels were analyzed .Then a meaningful factor multivariate Logistic regression analysis was made .Results There was a statistically significant difference between the two groups'TC ,HDL -C ,LDL -C ,Glu ,and FIB(P<0 .05) .There was no significant difference of TG (P>0 .05) .There was a statistically significant difference between the groups'all frequency and low frequency group and control group TC ,HDL -C ,LDL -C ,FIB(P<0 .05) .There was no sig‐nificant difference between each group of Sudden deafness group and the high frequency group and control group (P>0 .05) .The Logistic regression analysis showed that the LDL ,FIB was the major risk factors associated with the onset of sudden deafness .Conclusion Lipid levels in patients with sudden hearing loss is higher than that of in the normal hearing group .High levels of LDL - C and FIB have close correlations with the patients with sudden deafness ,and the related risk factors for the onset of sudden deafness ,according to threshold curve type ,should choose targeted treatment options .

Objective To compare clinical effects of ropivacaine and hupivacaine administered in epidural space and study their pharmacokinetics and transfer across placenta. Methods Eighteen full-term nulliparous women aged 22-35yr, weighing 50-70 kg scheduled for cesarean section were randomized to one of two groups; group R received 0.75% ropivacame and group B received 0.5% hupivacaine for epidural block. Sensory and motor block, incidence of hypotension, blood gases of umbilical venous blood, Apgar score and NACS score of the neonates were investigated. Blood samples were taken from external jugular vein at 10, 15,30,60 and 120 min after epidural administration of local anesthetic and from umbilical vein for determination of plasma concentration of ropivacaine or bupivacaine by chromatography. Results The onset time and termination of sensory and motor block, the maximal height of block, incidence of hypotension, blood gases of umbilical venous blood, Apgar score and NACS score of the neonates were similar between the two groups. The plasma concentration of ropivacaine and bupivacaine peaked (613?90) ng.ml-1 and (51.3163.2) ng.ml-1 respectively, at 15-30 min after epidural administration. UV/ MV ratio was similar between the two groups (0.42 ? 0. 12 vs 0.48?0.15). Conclusion 0.75% ropivacaine and 0.5% bupivacaine administered in epidural space for cesarean section can produce adequate analgesia and equivalent clinical effects. Placental transfer of ropivacaine and bupivacaine are similar. The plasma concentration of ropivacaine and bupivacaine of maternal blood and umbilical venous blood are markedly lower than the concentration causing toxrcity, but safety margin of ropivacaine is wider than that of bupivacaine.

Aim: To establish a linear additive model for the predication of in vitro sinomenine hydrochloride release from the combination of immediate release, enteric-coated and sustained-release pellets based on the release profiles of each pellet type. Methods: Immediate release pellets were manufactured by extrusion/spher-onization technology. The operation of bottom-spraying in the fluid-bed equipment was conducted to enteric-coating using Eudragit~(R) L-30D-55 and sustained-release coating using Surelease~(R) . In vitro sinomenine hydrochloride release profiles of both uncoated and coated pellets were fitted to the chosen mathematical equations offered by the curve fitting toolbox of Matlab~(R) before a linear additive model was created based upon the best-to-fitting equations. The proportion of each pellet type in the combined format to generate the desired 24 h sinomenine hydrochloride release profile was solved by Matlab~(R). The predicted and assayed sinomenine hydrochloride release from the polled pellets was compared. Results: It was shown that the actual sinomenine hydrochloride release profiles of each pellet type were approximate to those of predicted ones. A linear additive model of the appropriate mathematical equations of each pellet was proven to be capable of controlling in vitro release of sinomenine hydrochloride multiple-unit pellets. Conclusion: A multiple-unit combined system of the selected pellets, as a novel sustained-release system, was successfully prepared. In vitro release performance of the calculated combination of each pellet type could be guaranteed by this approach in designing sustained-release drug delivery system.

OBJECTIVE: Through the analysis of coagulation convention and blood routine parameters of sudden hearing loss (SHL) patients, further prove the correlation of sudden deafness and the the inner ear microcirculation, to guide clinical diagnosis and treatment. METHOD: Select 424 patients (448 ears) with sudden deafness in our department to SHL group. According to hearing curve is classified into low intermediate frequency descent group, high frequency drop and full frequency group, and drawing 244 cases in the same period of hospitalization deviated septum, vocal cord polyp patients as control group. All patients' coagulation detection, D-dimer, blood leukocytes, neutrophils and platelet count percentages were analyzed. Then a meaningful factor multivariate Logistic regression analysis was made. RESULT: There was a statistically significant difference between the two groups' prothrombin time, international normalized ratio, activated partial thromboplastin time, thrombin time measurement, fibrinogen, D-dimer, platelet count, white blood cell, neutrophil ratio(P<0.05); Logistic regression analysis showed that the prothrombin, thrombin time measurement, fibrinogen, D-dimer, neutrophil incidence of sudden hearing loss associated risk factors. CONCLUSION SHL in patients with coagulation dysfunction may be involved in the occurrence of SHL development mechanism, and there is a correlation of the SHL and the dysfunction of inner ear microcirculation.
Blood Coagulation Disorders ; complications ; Ear, Inner ; blood supply ; Fibrin Fibrinogen Degradation Products ; analysis ; Fibrinogen ; Hearing Loss, Sudden ; blood ; complications ; Humans ; Incidence ; Risk Factors

An analytical method for the simultaneous determination of four quinolones in soil was developed. Soil samples were extracted by a mixture of 50% magnesium nitrate and 10% ammonia(96∶ 4, V/V)with an ultrasonic-assisted extraction, then purified and concentrated by HLB cartridge, and eluted with acetonitrile and 0.067 mol/L phosphoric acid(5∶ 1, V/V). Using acetonitrile and 0.067 mol/L phosphoric acid(pH=2.5) as the mobile phase, these analytes were quantificated by HPLC(fluorimetric detector) at excitation and emission wavelength of 280 nm and 450 nm respectively. The detective limits for four quinolones in soil were from 0.58 to 0.03 g/kg. The recoveries were 60.4% to 99.3% for soil samples. The method was successfully applied to determine the quinolones in soil samples from vegetable fields. Four quinolone compounds were detected to a different extent with total amounts of quinolones ranged from 27.84 to 129.26 μg/kg.

Objective:To investigate the damaging traits of cognitive function in late-onset depression.Methods:In this cross-sectional study,30 elderly out-and in-patients whose first onset of major depression occurred at 60 years of age and older were included as the case group,and 30 age-and gender-matched normal elderly people were included as the controls.The diagnoses of moderate to severe depressive episode or recurrent depression were made according to the International Statistical Classification of Diseases and Related Health Problems,Tenth Revision (ICD-10) diagnostic criteria.The Wisconsin Card Sorting Test (WCST),Stroop Test and Verbal Fluency Test (VFT) were used to assess attentional set shifting,attentional inhibition and working memory.The severity of depression was evaluated with the Hamilton Depression Scale-17(HAMD-17).Results:The performance scores of errors,perseverative responses,perseverative errors,percent of perseverative errors in the WCST were significantly higher in the patient group then in the control group[(61 ± 23) vs.(41 ± 25),(44 ± 27) vs.(27± 19),(36 ± 20) vs.(23 ± 16),(28 ± 15) vs.(19 ± 11),P ＜ 0.01].The scores of conceptual level responses [(36±24) vs.(54 ±26)],the correct scores of consistent group in Stroop test[(19 ±3) vs.(20 ±2)] and the scores of VFT in WCST[(10 ±2) vs.(11 ±2)] were lower in the patient group than in the control group (Ps ＜0.01).The scores of perseverative responses in the WCST were positively correlated with retardation factor scores(r =0.38,P ＜ 0.05).The correct scores of consistent group in the Stroop test were negatively correlated with retardation factor scores(r =-0.41,P ＜ 0.05).The scores of VFT were negatively correlated with retardation factor scores(r =-0.52,P ＜ 0.01).Conclusion:There may be impairment of cognitive function in late-onset depression,especially severe executive dysfunction.

Objective To analyze the current research focus of solid organ transplantation in order to provide information for Chinese clinicians and researchers for research direction and topic selection.Method By using bibliometric method,the Chinese Science Citation Database and Web of Science were thoroughly searched and highly cited papers concerning solid organ transplantation were summarized and analyzed from 2010 to 2013.With the year of publication,national and institutional distribution,source journals,column type,research content as indicators,all the keywords of high-frequency were analyzed via co-word analysis method in order to summarize the characteristics of hot research subject in the field of solid organ transplantation.Result From 2010 to 2013,top100 highly cited articles in Chinese had a preference for liver transplantation,followed by kidney transplantation,immunosuppressant,organ donation,postoperative complication and rejection,while articles in English mainly focused on surgical technique,recipient survival,transplant immunity and rejection.Top 100 highly cited articles were from 50 and 58 institutions for Chinese and English,respectively.There were 47 papers from top 10 institutions in Chinese,accounting for 45.6％ of the total citations.There were 43 papers from top 10 institutions in English,accounting for 47.4％ of the total citations.Top 100 highly cited papers in Chinese were distributed in 27 journals.The top 10 journals published 75 papers,which have been cited for 316 times.Top 100 highly cited papers in English were distributed in 36 journals.The top 10 journals published 70 papers,which have been cited for 7 694 times.Conclusion Domestic experts and scholars should pay continuous attention to the organ donation issues related to research in the future,with reference to the advanced experience of Europe and the United States and other countries.Solid organ transplantation registry,data center report and update,transplant recipient prognosis and long-term survival should be highly focused.

Objective To investigate the nutritional management level of Department of Clinical Nutrition in elderly inpatients through analyzing the actual hospital dietary intakes in elderly inpatients in Peking Union Medical College Hospital from 2013-2015.Methods Using continuous sampling, the nutrients contents and the eating rates of hospital meals ordered by the elderly inpatients on the 1st, 15th, 29th of every month from May 2013 to October 2015 were selected.The intake levels of energy, protein, calcium, vitamin A, vitamin B1 , and vitamin C were calculated and compared with the Chinese dietary reference intakes (DRIs).The nutritional in-take differences between diabetes diet and the basic hospital diet were also compared.Results A total of 90 days of hospital dietary data from 8 402 elderly inpatients were included in the study.The average eating rate was (50.1 ±4.2)%, which was lower than the general eating rate of the hospital [ (59.0 ±4.0)%, P<0.001]. Only protein intake from hospital diet reached the requirement target [male (103.1 ±47.3)%, femal (98.3 ± 33.8)%].Individual compliance rates were 63.2%and 59.8%, respectively, while the other kinds of nutrients were lower.The compliance rates of energy [ (73.3 ±26.3)%vs.(62.1 ±38.2)%, P<0.001] and ma-jor nutrient intake [ protein: ( 119.1 ±41.2 )% vs.( 93.3 ±65.1 )%, P <0.001; calcium: ( 55.5 ± 26.7)% vs.(34.3 ±34.2)%, P <0.001; vitamin A: (75.2 ±48.3)% vs.(57.4 ±97.1)%, P<0.001;vitamin B1:(76.4 ±38.2)%vs.(52.1 ±46.6)%, P<0.001;vitamin C:(92.2 ±51.4)%vs. (49.3 ±55.0)%, P<0.001) in diabetes diet group were significantly higher than those in the basic hospi-tal diet group.Conclusions The nutritional intakes from hospital diets may not meet the nutritional require-ments based on DRIs in elderly inpatients.Medical diet designed by physicians and dietitians should be ex-panded to improve the nutritional management level for these patients.