To propose a new pattern for quality control and evaluation of Chinese materia medica(CMM).The limitation of quality control pattern for CMM was investigated and a new method for quality evaluation has been explored and designed,combining with the introduction on the conception of matter-element evaluation model and its application to product quality evaluation in value engineering,as well as the research survey on the spectrum-activity relationship of CMM.The new method for quality evaluation referred to the results of research concerning the spectrum-activity relationship of CMM.Taking the quality grade,quality index,and chemical composition of CMM as matter-elements,the evaluated grades and tested data were normalized to establish the matter-element model.With the establishment of the improved quality control method,which is in accordance with the basic characteristics of CMM,it is expected that the safety,efficiency,and quality stability of CMM could be ensured and a new scientific research strategy and technological support could be provided to promote the modernization of CMM.

Comparing the patients with type 2 diabetes and the control and using the animal models,the researchers have found some disease related proteins and the marks for disease detection.They have set some new detection methods and give us a special view into type 2 diabetes.We do some primary discussions about recent studies and future development directions in the proteomics study of type 2 diabetes in this article.

Objective To explore the CT manifestations of pediatric mesenechymal hamartoma of liver (MHL).Methods Clinical data of 15 cases with MHL confirmed by surgery and pathology were retrospectively analyzed.All children were performed with CT scans including plain and enhanced scans,and the imaging features were analyzed.Results All the lesions were solitary,and 9 masses located at the right lobe of liver,4 located at the left lobe,the others located at both right and left lobe.The maximum diameter of lesions was from 5 cm to 30 cm,with an average of (11.52±6.84) cm.Ten cases were cystic and solid mixed,5 cases were solid.After contrast administration,the solid component and the septa of the masses showed enhancement while no enhancement was observed in the cystic component.Two cases had the spot-like calcification.Conclusion MHL has some special characteristics in the CT scan before surgery,which should be differentiated from other cystic and solid tumors of live.Some MHLs can be diagnosed when combined with the clinical information and CT images.

Objective To evaluate the sufentanil-sparing effect of ketorolac tromethamine for postoperative analgesia in the elderly patients.Methods Sixty ASA Ⅱ or Ⅲ patients,aged ≥ 65 yr,with a body mass index of 18-24 kg/m2,undergoing elective gynecological operations,were randomly divided into 2 groups(n =30 each):sufentanil group(group S)and ketorolac tromethamine plus sufentanil group(group T).Both groups received combined intravenous-inhalational anesthesia and patient-controlled intravenous analgesia(PCIA)after operation.PCIA solution contained ketorolac tromethamine 180 mg and sufentanil 100 μg in 100 ml of normal saline in group T.After a loading dose of ketorolac tromethamine 30 mg was injected intravenously at 15 min before the end of operation,the PCA pump was set up with a 1.6 ml bolus dose,a 20 rain lockout interval and background infusion at a rate of 1.5 ml/h in group T.PCIA solution contained sufentanil 100 μg in 100 ml of normal saline in group S.After a loading dose of sufentanil 5 μg was injected intravenously at 15 min before the end of operation,the PCA pump was set up with a 1.6 ml bolus dose,a 20 min lockout interval and background infusion at a rate of 1.5 ml/h in group S.The effective analgesia(postoperative VAS scores at rest and during activity ＜ 3)was maintained within 48 h after operation.The amount of sufentanil consumed within 48 h after operation and adverse effects were recorded.Results Compared with group S,the amount of sufentanil consumed within 48 h after operation was significantly reduced,and the incidence of nausea and vomiting,urinary retention and pruritus was significantly decreased in group T(P ＜ 0.05).Conclusion Ketorolac tromethamine used with PCIA with sufenlanil has a significant sufentanil-sparing effecl for posloperative analgesia and improves the safety of analgesia in the elderly patients.

Objective To investigate the frequency distribution of Val762Ala(T2444C)polymorphism among Han Chinese population in Gansu province,and to explore its relation to the suseeptibihty to gastric cancer. Methods A hospital-based,case-control study was performed involving 138 patients with gastric cancer and 110 healthy controls by PCR-RFLP method.Logistic regression and Chisquare analyses were used to assess OR and 95% CI. Results PARP-1762Ala allele was overexpressed in gastric cancer cases(11.5%)compared with controls(4.5%)(OR=3.012,95%CI 1.054-8.603,P=0.033).Statistic analysis showed increaged risk for gastric cancer patients with the 762Ala allele.Conclusion PARP-1 Val762Ala(T2444C)is related to the risk of gastric cancer,PARP-1762Ala allele could be used as a susceptibility marker for the development of gastric cancer.

Objective To explore the risk factors affecting T-tube sinus tract formation after common bile duct exploration and T-tube drainage by spiral computed tomography (SCT)examination.Methods The clinical data of 465 patients undergoing common bile duct exploration and T-tube drainage at the Affiliated Hospital of Youjiang Medical College for Nationalities from May 2011 to December 2013 were retrospectively analyzed.The residual stones and biliary stricture were detected by T-tube cholangiography,and the T-tube sinus tract formation in all the patients was detected by SCT examination at postoperative week 2.The factors affecting sinus tract formation were analyzed,including gender,age,albumin (Alb),C-reactive protein,alanine transaminase (ALT),total bilirubin (TBil),hemoglobin (Hb),surgical method,effusion around T tube,reoperation,diabetes.Univariate analysis was done using the chi-square test.Multivariate analysis was done using the Logistic regression.Results T-tubes of 465 patients were clear without residual stones.T-tube in the 397 patients was removed when the sinus tract formation was confirmed by CT examination at postoperative week 2.T-tubes in other patients were removed when the sinus tract formation was detected by CT reexamination at postoperative week 4.In univariate analysis,Alb,surgery method,effusion around T-tube and diabetes were important factors affecting T-tube sinus tract formation (x2 =50.750,7.671,19.022,15.373,P ＜ 0.05).Alb ＜ 30 g/L,laparoscopic surgery,effusion around T-tube and diabetes were independent risk factors affecting T-tube sinus tract formation in multivariate analysis [Odds ratio =1.135,0.493,0.262,0.363; 95％ confidence interval:1.061-1.214,0.280-0.865,0.104-0.658,0.156-0.843,P ＜ 0.05].Conclusions The T-tube removal is determined according to the sinus tract formation by CT examination at week 2 after common bile duct exploration and T-tube drainage.Alb ＜ 30 g/L,laparoscopic surgery,effusion around T-tube and diabetes are independent risk factors affecting T-tube sinus tract formation.

Methotrexate (MTX)has dual effects of anti-inflam-matory and immune suppression,and its pharmacological mecha-nism is complex,diverse and synergistic.This paper summari-zes the main anti-inflammatory mechanism of low-dose MTX,in-cluding inhibition of JAK/STAT pathway,inhibition of inflam-matory reaction and immune response,increasing the accumula-tion of adenosine and the function of intracellular metabolites (methotrexate polyglutamate).In addition,low-dose MTX can inhibit oxidation by decreasing the level of lipid peroxidation, suppress the inflammatory response to secondary spinal cord in-jury,reduce spinal cord ischemia reperfusion injury and neuro-pathic pain,thus playing a neuroprotective role by a series of pharmacological mechanism.The anti-inflammatory mechanism of low-dose MTX and its application in spinal cord injury were reviewed,to guide the further research on the anti-inflammatory effect of MTX,and provide a theoretical basis for new drugs for clinical treatment of spinal cord injury.

Objective To explore the correlation of E-cadherin(E-cad) mRNA expression with tumorigenesis and development of lung cancer.Methods The relative quantitative nested RT-PCR was used to detect the expression of E-cad mRNA in cancerous tissues,adjacent and distal tissues of tumor from 50 lung cancer patients,and non-cancerous benign lung tissues from 5 lung disorder patients.Results The means of expression rate of E-cad mRNA in cancerous tissue,adjacent and distal tissues of tumor,and non-cancerous tissues were 1.33?0.53,1.65?0.60,2.01?0.46 and 2.09?0.09 respectively.The data were evaluated by analysis of variance.There were significant difference among cancerous tissue,adjacent and distal tissue(F=18.810,P0.05).Also,there were no significant differences among squamous cell carcinoma,adenocarcinoma and adenosquamous carcinoma in the group of cancerous,adjacent and distal tissue.Conclusion The reduced expression of E-cadherin mRNA may play important role for tumorigenesis and development of lung cancer,and there was no evident relationship of E-cad mRNA with different pathological types of lung cancer.

BACKGROUND:The need for bone graft and its substitutes has dramatically increased during the past decade. Either bio-derived graft materials or synthetic materials cannot satisfy this need. Study of composite bone graft has become a focused field.OBJECTIVE: To develop a novel porous poly (lactic-acid) (PLA)/bone matrix gelatin (BMG) bioactive composite material by means of supercritical carbon dioxide fluid technique (SC-CO2) and evaluate the bone forming potential in vitro.DESIGN: A comparative study and observation.SETTING: Research Center of Tissue Engineering, Southern Medical University; Institute of Biomaterials and Pharmaceutical Technique, China Institute for Radiation Protection.MATERTALS: Mouse osteoblast-like MC3T3-E1 cells were obtained from RIKEN Cell Bank in Japan. PLA was supplied by the Institute of Bio-technique of Jinan University. Alkaline phosphatase (ALP) kit was the product of Nanjing Jiancheng Bio-engineering Institute. MC3T3-E1 cells were cultured in Dulbecco's modified eagle medium (DMEM) (Gibco Laboratories, USA) supplemented with 10% fetal bovine serum (FBS, Si Ji Qing, China), 100 mg/L penicillin and 100 U/L streptomycin in a 37℃ humidified atmosphere. The cells were passaged with 0.25% trypsin (Gibco Laboratories, USA).METHODS: The experiment was carried out in the Research Center of Tissue Engineering, Southern Medical University from October 2005 to July 2006. The porous PLA/BMG composite biomaterials and PLA were prepared with SC-CO2 technique, and then macroscopic and microscopic observations were performed. The MC3T3-E1 cells were co-cultured with PLA and PLA/BMG in vitro, and DMEM was taken as the blank control group. Each well was pictured with digital camera.The percentage of the stained area, standing for the calcification deposition, was determined with an image processing and analysis software. The ALP activity and calcium content were determined with the method of ultrasonic cell lysis.MArN OUTCOME MEASURES: ① Macroscopic and microscopic observation of PLA/BMG; ③ Quantitative measurement of the calcification area; ② ALP activity and calcium content.RESULTS: ① Macroscopic and microscopic observation of PLA/BMG: The PLA/BMG showed good homological porosity with the size of 50-150 μm and connectivity: There were many holes with the size of 5-10 μm in the PLA/BMG walls. The PLA and BMG were mixed uniformly. ② Calcification areas: The percents of calcification area were significantly different among the PLA/BMG group, PLA group and blank control group [(42.98±4.44)%, (9.55±1.94)%, (0.86±0.41)%, P ＜ 0.01]. ③ Results of calcium content and ALP activity: The ALP activities were significantly different among the PLA/BMG group, PLA group and blank control group [(5 427.58±1173.57), (1 060.54±500.27),(40.01±24.50) nkat/g, P ＜ 0.05-0.01]; The calcium content in the PLA/BMG group was higher than those in the PLA group and blank control group [(3.51±1.64), (1.04±0.21), 0.70±0.24] mmol/g, P ＜ 0.01].CONCLUSTON: The PLA/BMG prepared by means of SC-CO2 has a good osteoinductive activity and it is worth studying further as bone biomaterial and bone tissue engineered scaffold.

Objective To investigate the CT features of hepatic focal nodular hyperplasia (FNH) in children.Methods Thirteen patients with FNH,which was confirmed by postoperative pathology,were enrolled retrospectively.Plain and contrast CT were performed on all patients before operation.The CT imaging features of FNH including size,shape,density,style of contrast were analyzed retrospectively and compared with pathology.Results There were 13 patients with 16 lesions,8 lesions were found in the right lobe,5 lesions in the left lobe and 3 lesions involving both lobes.The tumor size ranged from 5.5 cm to 11.5 cm (media size 7.5 cm) in diameter.Histologically,2 cases were typical type,11 cases were atypical type.The lesions were regular morphology in 12 cases and 1 case with capsule.On plain CT,the lesions were isodensity (n=1) or slightly low-density (n=12).In 2 typical type lesions,there were slit-like,stellate-shaped low density central scars.Arterial phase demonstrated that 12 cases were significantly enhanced and 1 case showed mild enhancement.The central scar was not enhanced.In 12 cases,thickened and torturous arteries were seen.The enhancement was reduced at the portal venous phase in all the lesions,with 10 cases showing slightly higher density,2cases isodensity and 1 case low-density.Two cases showed mild enhancement of the central scar.The enhancement of the solid portion in all lesions decreased at the delay phase,with 12 cases showing isodensity and 1 case slightly low density.Two cases with central scar showed delayed enhancement with slightly higher density.Conclusion The CT features of FNH in children are diversified but distinctive which are related with postoperative pathological findings.Combining with clinical symptoms and CT features can be helpful for the early diagnosis of FNH in children.