Objective:To establish an HPLC method for the simultaneous determination of methionine, vitamin B1 and vitamin B2 in Lingzhi Erwei methionine capsules. Methods:The determination was performed on a Ultimate? AQ-C18 column(250 mm × 4. 6 mm, 5 μm,Welch Inc. ) with the detection wavelength at 220 nm. The mobile phase was composed of methanol and 0. 07 mol·L-1 sodium heptanesulfonate solution (14 ml triethylamine diluted with water to1 000ml, adjusting pH to 3. 5 with diluted orthophosphoric acid) with gradient elution, and the flow rate was 1. 0 ml·min-1. Results: Methionine, vitamin B1 and vitamin B2 was in good linearity within the range of 0.527 0-1.510 0 mg·ml-1 - (r =0.999 9), 0.045 52-0.136 56 mg·ml-1 (r =0.999 9) and 0.010 10-0. 060 58 mg·ml-1(r=0. 999 9), respectively. The mean recovery was 100. 5%, 97. 7% and 101. 5% with RSD of 0. 5%, 1. 0%and 1. 4%(n=9) accordingly. Conclusion:The method is simple, accurate, reliable and appropriate in the simultaneous determina-tion of methionine,vitamin B1 and vitamin B2 in Lingzhi Erwei methionine capsules.

Objective: To observe the anti-fibrotic mechanism of Biejiajian Pill. Methods: SD rats were randomly divided into six groups: control, model, colchicina (0.1 mg/kg, positive), Biejiajian Pill (0.55, 1.1, and 2.2 g/kg) groups. Except for the control group, the rats in the other groups were sc injected with 40% CCl4 olive oil solution twice a week for consecutive six weeks to establish the models of liver fibrosis.. At the same time, drugs were ig administrated at a volume of 10 mL/kg in each group, once daily for consecutive 11 weeks. At the end of the week 11, all rats were sacrificed. The immunohistochemical technique was applied to analyzing the expression of α-smooth muscle actin (α-SMA) in liver tissue, RT-PCR was applied to analyzing the expression of transforming growth factor-β1 (TGF-β1) protein and smad 3 gene in liver tissue. Results: Compared with the control group, the expression levels of α-SMA, TGF-β1, and smad 3 gene increased significantly (P < 0.05) in the model group. Compared with the model group, Biejiajian Pill and colchicina decreased the expression of α-SMA, TGF-β1 and smad 3 gene, the efficacy of high-dose Biejiajian Pill group was more significantly. Conclusion: The antifibrotic mechanism of Biejiajian Pill may be through lowing the TGF-β1/smad 3 signaling pathways and inhibiting hepatic stellate cells activation and proliferation.

Objective The objective of this study was to investigate the expression of PSMD10 and Ki67 in epithelial ovarian tumors and its clinicopathological significance.Methods Immunohistochemical method was used to detect the expression of PSMD10 and Ki67 in 21 cases of ovarian benign tumor,31 cases of ovarian borderline tumor and 156 cases of ovarian cancer.Results The positive expression rate of PSMD10 and Ki67 in ovarian cancer was significantly higher than those of ovarian borderline and benign tumor(P<0.05).The positive expression rate of PSMD10 in ovarian cancer tissues was not different from others groups(P>0.05).There was significant different the positive expression rate of PSMD10 from clinical stage,pathological grade and residual tumor diameter(P<0.05).There was a positive correlation between the expression of PSMD10 and Ki67 in ovarian cancer(P<0.01).Conclusion PSMD10 and Ki67 play an important synergistic role in the carcinogenesis and progression of epithelial ovarian cancer.It can be used as an important index to judge the degree of malignancy and progression of ovarian cancer.Joint testing PSMD10 and Ki67 are used to guide the clinical diagnosis.

Objective To investigate the potential sedative effects of epidural anesthesia and its mechanism. Methods Fifty ASA Ⅰ -Ⅱ patients aged 20-55yr, scheduled for gynecological surgery were studied. Patients whose body weight exceeded 95 kg or was less than 45kg were excluded. Alcoholics and those addicted to sedative or opiates were also excluded. The patients were unpremedicated. Before anesthesia the patients' radial artery was cannulated for continuous BP monitoring and blood sampling. ECG, BIS and HRV were continuously monitored. Epidural puncture was performed at L1-2 . A catheter was inserted in epidural space for 3-4cm in a cephalad direction. The patients were randomly divided into 3 groups: epidural lidocaine group (group E, n = 15); intravenous lidocaine group (group Ⅰ , n = 15) and control group (group C, n =20). In group E the patients received an iv bolus of lidocaine 1.5mg?kg-1 followed by a lidocaine infusion at a rate of 30mg?kg-1?min-1 and an epidural bolus of normal saline 15 ml; in group C the patients received an epidural bolus of NS 15 ml only. The intravenous lidocaine infusion in group I was designed to mimic systemic absorption of lidocaine from epidural space. 20 min after epidural lidocaine or saline administration, a propofol infusion was started at a rate of 150ml/h until the patients lost consciousness, The amount of propofol infused was recorded. Blood samples were taken before propofol infusion for determination of plasma level of lidocaine. Results The amount of propofol infused when the patients lost consciousness was (1.22 ?0.25) mg?kg-1 in group E, (1.62 ?0.22) mg?kg-1 in group I and (1.85?0.41) mg?kg-1 in control group. The amount of propofol infused in group E was significantly less than that n group I and C ( P

Animals ; Drugs, Chinese Herbal ; pharmacology ; Liver ; pathology ; Liver Cirrhosis ; pathology ; Paeonia ; Rats ; Rats, Sprague-Dawley

Robotic system helps surgeons in performing surgery. Currently Da Vinci system is the most popular. Da Vinci system has been used for the stomach and bowel diseases in 27 cases(18 cases of stomach and 9 cases of colon and rectum) in the Zhongshan Hospital, Fudan University. Accurate preoperative staging is crucial, and Da Vinci system is advantageous in lymph node dissection, preservation of nerve plexus, and complete resection of mesorectum. Adoption of gastrointestinal tract reconstruction technique should depend on the operation and experience in surgery. Though Da Vinci system has limitations and the cost is high, it is believed to be the future trend.
Digestive System Surgical Procedures ; methods ; Humans ; Robotics ; methods

OBJECTIVETo study the anti-immune inflammation efficacy and toxicity of Tripterygium wilfordii decoction, in order to provide experimental basis for studies on its "efficacy-toxicity" correlation.

METHODThe delayed hypersensitivity model was established by dinitrofluorobenzene in mice. Different doses of T. wilfordii decoction was administered for 5 consecutive days. The ear swelling inhibition ratio and the toxic action were observed. After the final administration, the biochemical indexes of PGE2, TNF-α, IL-2, ALT, AST, PA, TBA, TBIL in serum were detected, and the visceral indexes of heart, liver, spleen and kidney were measured.

RESULTThe DNFB-induced ear swelling could be notably inhibited by multiple oral administration of T. wilfordii decoction, with the ED50 and its 95% confidence limit of 0.34 (0.21-0.42) g x kg(-1). The contents of PGE2, TNF-α, IL-2 in serum decreased in a dose-dependent manner. The activities of serum AST, ALT, TBA, TBIL and the PA content reduced.

CONCLUSIONT. wilfordii decoction shows a significant anti-immune inflammation efficacy within the dosage range between 0.59 and 2.34 g x kg(-1) in a dose-dependent manner. With a certain hepatotoxicity, high dose (2.34-4.68 g x kg(-1)) of T. wilfordii decoction can cause substantial liver injury, with a dose dependence in liver function index. Therefore, the efficacy and toxicity of T. wilfordii is dose dependent, which provides reference for preventing adverse drug reactions in clinic and developing early-warning schemes and ensure the clinical medication safety of T. wilfordii.

Animals ; Anti-Inflammatory Agents ; administration & dosage ; chemistry ; toxicity ; Drug Dosage Calculations ; Drug Evaluation, Preclinical ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; toxicity ; Edema ; drug therapy ; genetics ; immunology ; Humans ; Interleukin-2 ; genetics ; immunology ; Male ; Mice ; Tripterygium ; chemistry ; toxicity ; Tumor Necrosis Factor-alpha ; genetics ; immunology

Wet age-related macular degeneration (AMD) is one of major causes of blindness in elder people.Intraocular injection of anti-vascular endothelial growth factor (VEGF) -A regimen has made big breakthrough for the treatment on choroidal neovascularization of wet AM D,while long-term follow-up and necessary retreatments are the key issues to remain obtained visual acuity.Multiple strategies of wet AMD have been used in following-up and retreating based on the visual acuity,optical coherence tomography (OCT),ophthalmoscope and fluorescein fundus angiography (FFA) in abroad.However,there also are major differences in the patient' s composition,treatment habits and distribution of medical sources in China from Western.So we suggest to standardize the follow-up and retreatment strategies about intravitreal injection of VEGF-A for wet AMD as to achieve a better effectiveness.OCT-guided individual follow-up and retreatment strategies should be very helpful for maintaining a long-term efficacy,minimizing the treatment time and reducing medical cost.

Objective To analyze the effect of eukaryotic plasmids containing wild (sense) or anti- sense methylenetetrahydrofolate reductase (MTHFR) gene on cell viability and transcription level of tumor related genes in human gastric cancer cell line.Methods Human gastric cancer cell line MKN-45 was cultured.Recombinant plasmids containing wild MTHFR (W) or antisense MTHFR (A) gene, pCMV-W and pCMV-A,were constructed.Then pCMV-W,pCMV-A and pCMV blank plasmid were transfected into MKN45 cells respectively by using lipofect.Cell viability was analyzed by 3-(4,5-bime- thylthiazolyl-2)-2,5-diphenyhetrazolium dromide(MTT).The transcription levels of Dnmt 1,c-myc, p21~(WAF1) and hMLH1 genes were detected by real-time polymerase chain reaction(PCR).Results Cell vi- ability remarkably increased in those transfected with wild MTHFR (P＜0.01),which was contrary to those transfected with antisense MTHFR(P＜0.01).The expression of those tumor related genes mRNAs were all remarkably decreased in the MKN45-W cells in comparison with those in the MKN45-pCMV cells.No significant difference in the expressions of those tumor related genes mRNAs were found between the MKN45 cells transfected with pCMV-A and blank pCMV.Conclusion MTHFR influences cell viability and the expres- sion level of tumor related genes in human gastric cancer cell line MKN45.

Objective To investigate the efficacy of centrally fixed eyeball for assessment of the depth of anesthesia in premature infants undergoing outpatient fundus examination. Methods Fifty eight premature infants undergoing examination of fundus of eyes were enrolled in this study. Their gestational age (from the first day of last menstruation period to birth) + after birth age (from birth to the day when examination of fundus of eyes was performed) = 44-64 weeks. The patients were randomly divided into 2 groups: Ⅰ group body movement (group M, n = 27) and Ⅱ group centrally fixed eyeball (group E, n = 31). Anesthesia was induced and maintained with isoflurane inhalation. The patients were breathing spontaneously. The eyelids were kept open with speculum after induction of anesthesia. The EC50 of sevoflurane concentration which could inhibit body movement or make eyeballs centrally fixed was determined by up-and-down sequential experiment. The initial isoflurane concentration was 3% in both groups. Each time the isoflurane concentration was increased/decreased by 0.5 %. 95 % confidence interval (CI) was calculated. The lowest SpO2, respiratory rate and coughing during maintenance of anesthesia were recorded. Results The EC50 of sevoflurane (95% CI) was 2.9% (2.2%-3.6%) in group M and 3.4%(2.6%-4.6%) in group E. Examination was successfully completed in all patients. No respiratory depression and coughing occurred during examination and no vomiting and coughing were observed during feeding at 1 h after recovery from anesthesia. No body movement occurred in 15 patients whose eyeballs were centrally fixed in group E. Conclusion Centrally fixed eyeball can be used as sign of appropriate depth of anesthesia for fundus examination in premature infants.