An automated analytical method for simultaneous determination of vitamin A and E in livers, fortified infant formulae and eggs has been developed based on on-line solid phase extraction (SPE) coupled with a dual gradient high performance liquid chromatography system with column-switching. Firstly, food samples were centrifuged after saponified in mixture solution of anhydrous alcohol, potassium hydroxide and ascorbic acid at 80 ℃ for 30 min. Secondly, the saponified sample was loaded and washed on the first dimension extraction column using methanol-water (60∶40, V/V). Afterwards, the targeted analytes were trapped and enriched on the SPE column. Finally, the trapped analytes were transferred to the second dimension analysis column by valve-switching technique for the following separation and determination. Several key factors such as the type of SPE columns, elution buffer as well as pH of washing solution were optimized. The results showed that the calibration curves of vitamin A and E were linear in the range of 0 . 02-20 mg/L with correlation coefficient (R2) more than 0. 9998. In addition, the limits of detection (S/N=3) were found in the range of 3. 0-30. 0 μg/L. The spiked recoveries of the vitamin A and E from livers, eggs and fortified infant formulae ranged from 87 . 3% to 115 . 0% with the relative standard deviations ( RSDs ) of 1 . 8% -4 . 6%. The developed method is simple, sensitive and rapid to determine vitamins A and E in animal derived food.

To study the characteristics of pharmacological effects of property combinations of traditional Chinese medicines (TCMs) distributing in the stomach meridian based on medicinal property combination, in order to further define the association relationship between properties of TCMs and their pharmacological effects, and build a bridge for the interpenetration and combination between the medicinal property theory of TCMs and their pharmacological effects. On the basis of the studies on the medicinal property theory of TCMs distributing along the kidney meridian and their pharmacological effects, efforts were made to collect relevant data for medicinal properties and pharmacological effects and mine the characteristics of pharmacological effects that were corresponding to relevant medicinal property combination by processing materials related to medicinal properties and pharmacological effects with the association rules method. According to the analysis, TCMs distributing along the kidney meridian with different medicinal property combinations were significantly differentiated in the pharmacological effects, but shared identical pharmacological effects, such as immunological enhancement. In this study, TCMs distributing along the kidney meridian with different medicinal property combinations were taken as the carriers to closely integrate the traditional Chinese medicine theory with the modem study achievements, lay a solid foundation for further developing and enriching the traditional Chinese medical property theory, while providing a new perspective on the development of modem medicine.
Databases, Factual ; Drugs, Chinese Herbal ; chemistry ; therapeutic use ; Humans ; Kidney ; drug effects ; Kidney Diseases ; drug therapy ; Meridians

Animals ; Ear, Inner ; growth & development ; Mice ; MicroRNAs

Objective To investigate the clinical characteristics of gastrointestinal stromal tumor (GIST) of the stomach and to analyze the corresponding prognostic factors. Methods We retrospectively reviewed the clinical data of 121 patients in our hospital from March 1996 to March 2008. Gender、age、tumor size and histological type were analyzed. Results For these 121 cases the median survival time is 73.2 months. The overall 1-、3-、and 5-year survival rates were 82%, 59% and 50% respectively. The tumor-free survival rates for 1-、3-、and 5-yeas were 65%, 46% and 33% respectively. Cox univariale analysis revealed that gender、tumor size、organ involvement and recurrence were factors impacting prognosis. Cox multivariate analysis revealed that gender、tumor size、organ involvement、recurrence were prognostic factors for gastric GIST. Conclusions Male sex、tumor size (> 10 cm) and involvement of organ were independent indicators for a poor prognosis in patients with primary malignant gastric GIST.

Objective To observe the hindpaw withdrawal threshold (HWT), and the ultrastructure and expression of glia cell line-de-rived neurotrophic factor (GDNF) in sciatic nerve (SN) in chronic constriction injury (CCI) rats after pulsed radiofrequency (PRF). Meth-ods 30 Sprague-Dawley rats were divided into sham modeling-sham treating (SS) group, CCI-Sham treating (CS) group and CCI-PRF (CP) group. The right SNs of the rats in the CS and CP groups were ligated, and it was separated without ligation in the SS group. The CP group accepted PRF at the ligation 14 days after modeling, while the electrodes were placed without electricity in the SS and CS groups. Their HWT was measured before and 1, 7, 14 days after modeling, and 1, 7, 14 days after treatment. The right SN of ligation was observed under electron microscope 14 days after treatment, meanwhile, the GDNF expression was determined with enzyme-linked immunosorbent assay (ELISA). Results HWT was significantly shorter in the CS and CP groups than in the SS group after modeling, and it increased in the CP group 14 days after treatment compared with that of the CS group (P<0.01). The degeneration of SN significantly improved in the CP group compared with the CS group, while the expression of GDNF increased compared with that in the CS and SS groups (P<0.01). Conclusion PRF could relieve the CCI-induced neuropathic pain by upregulating the GDNF expression in the SN to prevent the SN from injury.

Objective To analyze the drug resistance in clinical isolates of Serratiamarcescens of conventional treatment and carbapenemases,guiding the clinical rational drug use.Methods 106 strains of Serratiamarcescens from 2009~2012 year the clinical isolation,K-B disk diffusion susceptibility test,the modified Hodge method for screening the carbapenemase, Whonet statistical analysis.Results Serratia marcescens in sputum,secretions,swallow swab,urine samples were isolated 89 strains (84.1%),4 strains (3.8%),3 strains (2.8%)and 3 strains (2.8%).Serratiamarcescens resistant to ampicillin and cefazolin rate more than 90%,to aztreonam,cefepime,ceftazidime,piperacillin/tazobactam and Cefoperazone/sulbactam, drug resistance rate was 10%~22%,to amikacin,ciprofloxacin and imipenem were lower than 10%.Imipenem the resistant strains in 4 strains,the modified Hodge test positive 3 strains,the positive rate was 2.8%.Conclusion Serratiamarcescens extensively drug-resistant strains,the resistant mechanism is very complex,the institute has appeared carbapenemase produ-cing strains,clinicians should be based on the drug sensitivity test results.

BACKGROUND:There is a close relationship between epilepsy and apoptosis. The appearance of epilepsy can lead to the loss of neurons in the hippocampus, triggering a series of programmed cel death. OBJECTIVE:To investigate the effect of bone marrow stromal stem cel transplantation on apoptosis in epilepsy. METHODS:After modeled to be of epilepsy 45, Sprague-Dawley model rats were randomly divided into three groups, fol owed by given no intervention (moldel group), normal saline (normal saline group) or bone marrow stromal stem cel transplantation (transplantation group). At 1, 2 and 4 weeks after modeling, the number of Bax-positive cel s, Bcl-2-positive cel s and Bax/Bcl-2 were detected by immunohistochemistry. RESULTS AND CONCLUSION:The number of Bax-positive cel s, Bcl-2-positive cel s and Bax/Bcl-2 presented no obvious changes in the normal saline group at different time points. However, the number of Bax-positive cel s and Bax/Bcl-2 in the transplantation group was significantly decreased, while the number of Bcl-2-positive cel s significantly increased compared with the other two groups at 1, 2 and 4 weeks after modeling (P<0.05). Moreover, the above indicators varied significantly in the transplantation group at different time points after modeling (P<0.05). These results show that bone marrow stromal stem cel transplantation can affect the apoptosis and effectively reduce the apoptosis in rats with epilepsy by up-regulating the number of Bax-positive cel s and down-regulating the number of Bcl-2-positive cel s.

Objective To observe the function improvement of deep venous valve after superficial vein surgery of lower extremity by ultrasound.Methods Sixty patients(70 lower limbs)with primary deep venous insufficiency were enrolled tO accept surgical management of vein systems.All Datients were detected with color Doppler ultrasonography,their deep venous hemodynamics indices were measured and recorded before operation and 6 months after operation. Results The total improvement rate of the deep venous hemodynamics after superficial vein surgery was 65.7%.The valve function of suPerficial femoral vein and popliteal vein were improved after operation,and there was no significant difference between the two veins in effectiveness.The improvement for deep venous reflux had no significant difference between two surgical methods. Conclusions The superficial vein surgery of lower extremity can improve deep vein valve function in some extent.

AIM　A series of 4-piperidinylthioether and sulfone derivatives of 4-［1-hydroxy-1-(2,3-dimethoxyphenyl) methyl］-N-2-(4-fluorophenylethyl) piperidine (MDL 100907) were synthesized in order to find new 5-HT2A selective ligands. METHODS　Title compounds 2a-2c were synthesized from 2,3-dimethoxythiophenol and tested for their affinities to 5-HT2A, 5-HT2C, 5-HT6 and 5-HT7 receptors and some other nervous transmitter receptors in vitro. RESULTS　Compounds 2a-2c are new compounds. The results of the binding assay demonstrated that they have relatively high selectivity for 5-HT2A receptor in vitro. CONCLUSION　Some sulfur containing analogues of MDL 100907 showed selective affinity to 5-HT2A receptor and are worth further study.

Objective:To study and analyze the application effect of intervention plan based on unplanned readmission risk model (LACE) in the rehabilitation of patients with acute myocardial infarction (AMI) complicated with cardiac shock (CS) after percutaneous coronary intervention (PCI).Methods:Ninety-three patients with AMI complicated with CS who received PCI in Tianjin Union Medical Center from January 2019 to December 2020 were enrolled. The patients were divided into LACE intervention group ( n = 46) and routine intervention group ( n = 47) according to the different nursing intervention methods. The patients in the routine intervention group received routine interventions, including drug care, diet care, psychological care, health education and telephone follow-up, while those in the LACE intervention group were assessed for the risk of LACE, and then intervention measures were formulated according to the score of LACE index, including strengthening risk awareness, life behavior, daily life ability, self-care ability, health recovery and health needs. The follow-up period in both groups was 3 months. The changes of cardiac function, incidence of adverse cardiac events, readmission rate, self-management ability after intervention and quality of life level before and after intervention were compared between the two groups. Results:There was no significant difference in cardiac function or quality of life before intervention between the two groups. After intervention for 3 months, the cardiac function and quality of life in the two groups were improved as compared with those before intervention. The left ventricular ejection fraction (LVEF) in the LACE intervention group was significantly higher than that in the routine intervention group (0.533±0.076 vs. 0.492±0.072, P < 0.05), the left ventricular end diastolic diameter (LVEDD) was significantly lower than that in the routine intervention group (mm: 47.09±7.01 vs. 53.23±7.15, P < 0.01), and the World Health Organization Quality of Life-brief (WHOQOL-BREF) score was also significantly higher than that in the routine intervention group (66.32±6.19 vs. 55.79±7.26, P < 0.01). The scores of self-management ability in the coronary heart disease self-management scale (CSMS) after intervention in the LACE intervention group were significantly higher than those in the routine intervention group (adverse hobbies score: 17.37±3.24 vs. 14.21±2.73, symptoms score: 14.82±3.11 vs. 10.56±2.65, emotional cognition score: 16.17±2.83 vs. 12.95±2.41, first aid score: 11.85±1.94 vs. 10.62±1.56, disease knowledge score: 15.58±2.73 vs. 12.68±2.61, daily life score: 17.80±2.61 vs. 14.33±2.36, treatment compliance score: 11.47±1.84 vs. 8.56±1.23, all P < 0.01). The incidence of adverse cardiac events and readmission rate in the LACE intervention group were significantly lower than those in the routine intervention group (10.87% vs. 29.79%, 4.35% vs. 17.02%, both P < 0.05). Conclusion:The intervention plan based on LACE risk model can effectively promote postoperative rehabilitation of patients with AMI complicated with CS after PCI, and also help to improve patients' self-management ability and quality of life, which is worthy of clinical promotion and application.