A HPLC-MS/MS multiple-reaction monitoring (MRM) quantitative analysis was made to establish a determination method for drug concentrations of costunolide (Co) and dehydrocostuslactone (De) in blood samples in the positive ion mode, with diazepam as the internal standard substance, in order to study the pharmacokinetic process of sesquiterpene lactones costunolide and dehydrocostuslactone after the oral administration of Weichang'an pills, and provide an theoretical basis for further studies on the substance basis for the anti-diarrhea effect of Weichang'an pills. In the blood samples, Co and De showed a good linearity within concentration ranges 0.700 0-769.7, 2.510-956.0 μg x L(-1), respectively. The results of precision, stability and recovery experiences proved the stability and reliability of the plasma concentration determination method. After the oral administration, the concentrations of Co and De in plasma increased with the increase in dose, with T(max) between 10.65-12.98 h, indicating a long time to reach peak plasma concentrations; C(max) of costunolide and dehydrocostuslactone ranged between 3.750-5.450,15.34-44.52 μg x L(-1), respectively. The in vivo adsorption of Co and De conformed to the one-compartment model, with a longer time to attain the peak plasma concentrations. These results provided an experimental basis for revealing the active substance basis and clinical medication of Weichang'an pills.
Administration, Oral ; Animals ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; pharmacokinetics ; Lactones ; administration & dosage ; blood ; pharmacokinetics ; Male ; Rats ; Rats, Wistar ; Sesquiterpenes ; administration & dosage ; blood ; pharmacokinetics ; Tablets ; administration & dosage ; chemistry ; pharmacokinetics

Objective To explore the clinical,radiological findings and pathogenic factor of spondylometaphyseal dysplasia.Methods Five cases were reported and the relevant documents were studied retrospectively.Plain X-ray film was performed in all patients.Results There were 4 male and 1 female,age ranged from 4 to 15 years with average of 9 years.The main features of 5 cases included delayed bone age,stature short,short trunk,waddling gait noted,scoliosis in 2 cases,kyphoscoliosis in 1 case,severe genu valgum in 2 cases.The main X-ray appearance of 5 cases is multiple irregularities of long bones metaphyses associated with platyspondylia,epiphysis is normal.Type Ⅰ SMD in 2 cases,Type Ⅱ SMD in 1 case,Type Ⅲ SMD in 2 cases.Conclusion When we meet children with delayed bone age and stature short,and muhiple irregularities of long bones metaphyses associated with platyspondylia were seen in X-ray plain film.we should think about spondylometaphyseal dysplasia.

OBJECTIVETo investigate the anti-cancer activities and the possible mechanism of Chinese herb Dioscrea bulbifera.

METHODThe herb was extracted sequentially with petroleum ether, ethanol and water. The anticancer screen were carried out in vivo with HepA in mice.

RESULTThe inhibitory effects on the formation of ascites volume and HepA cell viability in ascites were found in those extracted fractions except water fraction, the petroleum ether fraction being the strongest. Life span of mice bearing HepA ascites was prolonged after exposed to 100 mg x kg(-1) petroleum ether fraction and shortened after exposed to water fraction significantly. Besides, abnormal microstructure on HepA cells surface was found and it was supposed to be potential effect against viability of HepA which was convinced with the regeneration of HepA cells from ascites in mice exposed to petroleum ether fraction.

CONCLUSIONAnticancer active compounds are mainly extracted by petroleum ether from hydrophobic constituents of Dioscrea bulbifera and the anticancer effects were related to direct toxicity on tumor cell.

Alkanes ; Animals ; Antineoplastic Agents, Phytogenic ; isolation & purification ; pharmacology ; Ascites ; pathology ; Carcinoma, Hepatocellular ; pathology ; ultrastructure ; Cell Line, Tumor ; Cell Survival ; drug effects ; Dioscorea ; chemistry ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Ethanol ; Liver Neoplasms ; pathology ; ultrastructure ; Male ; Mice ; Mice, Inbred ICR ; Neoplasm Transplantation ; Plants, Medicinal ; chemistry ; Rhizome ; chemistry

OBJECTIVETo systematically review the effectiveness of minimally invasive total hip arthroplasty (MIS-THA) versus traditional total hip arthroplasty (THA) in patients with hip diseases.

METHODSThrough a method of combining Free words and keywords,we searched databases including PubMed,The Cochrane Library, EMbase,Web of Science, CBM , CNKI and Wanfang Data for randomized controlled trials (RCTs) on the comparison between MIS-THA and THA for hip disease from inception to June, 2014. Two reviewers independently screened literatures according to the inclusion and exclusion criteria, extracted data and assessed the quality of the included studies according to the "bias risk assessment" tool recommended by Cochrane Handbook 5.0 for Systematic Reviews. Then, meta-analysis was performed using RevMan 5.3 software.

RESULTSThirteen RCTs involving 1 213 cases of surgeries and total 1 284 hips (MIS-THA: n = 631; THA: n = 653) were identified. The results of meta-analysis showed that statistically significant differences were found in Harris hip score on the 3rd month after operation [MD = 8.37, 95% CI (6.02,10.72)], Hematocrit [MD = 0.02, 95% CI (0.01, 0.03)] and Hemoglobin [MD = 0.50, 95% CI (0.16, 0.85)] at the 48th hour after operation, changed value of femoral offset [MD = 0.30, 95% CI (0.04, 0.56)] between two groups. In the change value of femoral offset, THA was better than MIS-THA; There were no statistically significant differences between two groups in Harris hip score at 1st year after operation [MD = 3.26, 95% CI (-3.25, 9.76)], WOMAC score [MD = -0.53, 95% CI (-3.67, 2.60)] and Oxford score [MD = 1.34, 95% CI (-3.46, 6.13)] at the 6th week after operation, Hematocrit at the 8th hour after operation [MD = -0.01, 95% CI (-0.02, 0.00)], the incidence of hip varus [RR = 0.82, 95% CI (0.45,1.52)] and dislocation [RR = 1.40, 95% CI (0.48, 4.12)].

CONCLUSIONTHA brings less trauma, less hemorrhage and better early clinical outcome compared with MIS-THA, but the difference of the complication rates between the two groups is similar.

Arthroplasty, Replacement, Hip ; methods ; Humans ; Minimally Invasive Surgical Procedures ; methods

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Stomach Neoplasms ; diagnostic imaging ; Tomography, X-Ray Computed ; methods

OBJECTIVENeonatal asphyxia is one of the main causes for the acute respiratory distress syndrome (ARDS) in full-term newborns. Now it is believed that the reduced amount and abnormal function of pulmonary surfactant due to various causes is a major factor leading to acute lung injury. This study aimed at using an intrauterine acute ischemic-hypoxia rat model and investigating the effect of intrauterine acute ischemic-hypoxia on the expression of surfactant protein A (SP-A) and surfactant protein B (SP-B) in neonatal rat lungs.

METHODSThe rat model of acute intrauterine ischemic-hypoxia was established by ligating the unilateral uterine horn vessels of Wistar rats at the 21st gestational day. While the rat pups from the other side of the uterus, of which the uterine horn vessel was not ligated, were the sham-operation group. Rat pups were delivered by cesarean section at the 20, 30 and 40 min following the ischemic-hypoxia insult. The rat pups delivered by cesarean section from the gestation of 21 days were the normal control group. There were 42 rat pups and 6 pups in each group in this study. The distribution of SP-B protein in the neonatal rat lungs of different period of ischemia was examined by using SABC method. The average gray value of SP-B staining in type II alveolar epithelial cells were measured by Universal Imaging Porporation with Meta Morph software. The reverse transcription polymerase chain reaction (RT-PCR) was performed to quantitate the expression of SP-A and SP-B mRNA.

RESULTSFollowing the intrauterine acute ischemic-hypoxia, the numbers of type II alveolar epithelial cells with the positive SP-B staining were markedly declined. The average gray values at the 20, 30 and 40 min after the ischemia were 78.89 +/- 1.08, 79.69 +/- 0.13 and 80.00 +/- 0.63, respectively, which increased significantly compared with the normal control group (76.13 +/- 0.43, P < 0.01). The expression of SP-A and SP-B mRNA was weak following the ischemic-hypoxia insult. The relative amounts of SP-A (1.16 +/- 0.06, 1.14 +/- 0.01 and 1.13 +/- 0.04, respectively) and SP-B (0.81 +/- 0.02, 0.78 +/- 0.02 and 0.79 +/- 0.04, respectively) at the 20, 30 and 40 min after the ischemia were reduced significantly compared with controls (1.27 +/- 0.09 and 0.89 +/- 0.06, respectively, P < 0.05 and < 0.01) and reduced gradually following the prolongation of the insult. There were no significant differences (P > 0.05) between the normal and sham operation control groups on the expressions of SP-B protein as well as the SP-A and SP-B mRNA.

CONCLUSIONThe reduced synthesis of SP-B protein and the reduced expression of SP-A and SP-B mRNA might be caused by intrauterine acute ischemic-hypoxia, which may support theoretically the early application of pulmonary surfactant including SP-A and SP-B for treating the lung injuries of asphyxia in newborns.

Animals ; Animals, Newborn ; Female ; Gene Expression ; Hypoxia ; physiopathology ; Ischemia ; physiopathology ; Lung ; metabolism ; Pregnancy ; Pulmonary Surfactant-Associated Protein A ; genetics ; Pulmonary Surfactant-Associated Protein B ; genetics ; RNA, Messenger ; genetics ; metabolism ; Rats ; Rats, Wistar ; Reverse Transcriptase Polymerase Chain Reaction ; Uterus ; blood supply

Objective To study the overweight and obesity situation among Mongolian ethnic children and adolescents in the last 25 years and to provide a basis on related prevention and control measures.Methods A cross-sectional study was used,with 18 366 aged 7 to 18 Mongolian ethnic children and adolescents involved.Surveys on their physical health,in 1985,2000 and 2010 were carried out.Comparison on the mean of BMI and the prevalence rates of overweight and obesity in different years,genders,location of residence (urban or rural) was also made.Results Over the past 25 years,among the aged 7 to 18 Mongolian ethnic children and adolescents,the overall trend on their means of BMI was increasing.The prevalence rates of overweight and obesity in Mongolian ethnic children and adolescents were 2.1％,0.5％ in 1985,and 6.3％,2.4％ in 2000,with an increase of 2 to 4 times during the last 15 years.The prevalence rates of overweight and obesity were substantially increasing in the year 2010,to have reached 9.1％ and 6.6％,which were 4 to 12 times of the figures in 1985.The detection rates of overweight and obesity in urban boys were 1.2％,0 in 1985,7.9％,3.4％ in 2000 and 11.0％,11.8％ in 2010.However,the rate of obesity in the rural boys were 0.6％ and 0.6％ in 1985,2.8％,2.1％ in 2000 and 9.0％,3.4％ in 2010.In 1985 the rates of overweight and obesity in urban girls were 1.8％,0.3％,8.1％,4.3％ in 2000 and 9.4％,8.4％ in 2010.However,among the rural girls,the prevalence rates of overweight and obesity prevalence was 8.8％,2.2％ in 1985,4.5％,0.9％,in 2000 and 10.2％,4.5％ in 2010.The rates of overweight and obesity among groups in different years showed significant differences (P＜0.05).Conclusion Over the past 25 years,the prevalence rates on overweight and obesity increased significantly in Mongolian ethnic children and adolescents,and continued to rise,which called for reasonable and effective measures to be taken to prevent and control the occurrence of the problem.

BACKGROUND: Wharton's Jelly-derived mesenchymal stem cells are relatively primitive stem cells that are ideal vectors for gene therapy. However, there is a lack of studies on the conditions for the electrotransfection of Wharton's Jelly-derived mesenchymal stem cells. Therefore, exploring the optimal conditions for the electrotransfection of Wharton's Jelly-derived mesenchymal stem cells occupies an important position. OBJECTIVE: To investigate the effects of different electroporation conditions on the transfection efficiency of Wharton's Jelly-derived mesenchymal stem cells, and to explore the optimal conditions for cell electroporation. METHODS: By controlling the transfection conditions such as voltage, pulse duration and cell status, EEV-EGFP plasmids were transfected into Wharton's Jelly-derived mesenchymal stem cells by electroporation under different conditions. Transfection efficiency was detected by flow cytometry. RESULTS AND CONCLUSION: (1) The transfection efficiency was intended to increase when the voltage ranged from 125 V to 150 V, and the maximum transfection efficiency was obtained when the voltage was 150 V. However, when the voltage was further increased to 170 V, the transfection efficiency began to decrease considerably. (2) The maximum transfection efficiency was obtained when the pulse duration was 5.0 ms, while it was certainly decreased when the pulse duration was 2.5 and 7.5 ms. (3) The transfection efficiency of the cells cultured under normoxia was higher than that under hypoxic culture. These findings reveal that normally cultured Wharton's Jelly-derived mesenchymal stem cells can achieve higher electroporation efficiency via two pulse sessions at a voltage of 150 V, pulse duration of 5.0 ms, and pulse interval time of 50 ms.

Objective To explore the factors associated with the complications of cranioplasty, infection and local epidural hematoma, such as age, sex, primary disease, skull defect and concomitant hydrocephalus. Methods 211 patients after cranioplasty were reviewed. Results 8 cases (3.8%) complicated one of them, in which 6 cases with local epidural hematoma and 2 cases with infection. The infection was more likely related with the areas of skull defect (P=0.003). No factor was found related with the local epidural hematoma. Conclusion It is necessary to focus the size of the frontal sinus when repairing the the frontal bone, to avoid the screw into the frontal sinus caused infection.

Objective To investigate the effects of clinical nurses learning motivation factors,provide the basis for the formulation of strategies for cultivating clinical nurses,promote autonomous learning in nursing staff.Methods Four hundreds and sixty-nine clinical nurses were surveyed by the "clinical nurses learning motivation questionnaire".The influencing factors in learning motivation of continuing education in clinical nurses were analyzed by the SPSS 16.0 software package,including descriptive statistics,multiple regression analysis.Results Tatals of 469 questionnaires were sent out,and 428 were recycled,the effective responsive rate was 91.2％.The scores of six dimensions of learning motivation of continuing education in clinical nurses were from high to low in order occupation development,altruistic service,cognitive interests,expectations from outside,social contact and social stimuli.The occupation development motivation got the highest score (3.68 ± 0.70),the lowest score was social stimuli (2.89 ±0.85) ; the total score was (114.34 ±20.95).The ranked in the top 3 items were respectively laying the foundation for the promotion (4.01 ± 0.97),the more competent in his work (3.95 ± 0.95) and the acquisition of knowledge (3.92 ± 1.02).Multiple regression analysis showed that the influencing factors in learning motivation of continuing education in clinical nurses were ritles and working time of clinical nurses and the differences were statistically significant (t =-2.949,-2.037,respectively ; P ＜ 0.05).Conclusions Continuing education management should strengthen the management of social stimulation,carry out targeted intervention according to the different titles and working time of the nurses,and improve their initiative in taking parting in continuing education.