Objective To study the correlation with ketamine and its metabolite norketamine concentration in plasma and saliva in acute toxic rabbits.Methods Experimental rabbits were given intragastric(i.g.group,n=6)and intravenous(i.v.group,n=6)administration of ketamine respectively,and control tabbits(n=6)were given a same volume of physiologic saline.The plasma and saliva were collected before and after ketamine administration.Ketamine and norketamine in plasma and saliva were determined using GC/MS and GC.The correlation with ketamine(norketamine)concentration in plasma and saliva were artalyzed by a double variable Pearson correlation analysis.Results The correlation coefficients(r)of ketamine (norketamine)concentrations in plasma and saliva were from 0.80 to 0.95 in ketamine i.g.group and i. v.group.Conclusion There is a good relativity between the concentration of ketamine(norketamine)in plasma and in saliva.The ketamine(norketamine)concentration in saliva can be used to estimate the plasma concentration in the forensic identification of ketamine abuse.

The pharmacokinetics of morphine in rats was studied after treatment with morphine, as well as morphine and lofexidine. The results showed that in lofexidine group the T 1/2ka and CL of morphine was significantly increased, while the C max ,AUC and T 1/2k of morphine were significantly decreased. Our results indicate that the lofcxidine can reduce the absorption rate of the morphine and the concentration of morphine in blood, and then can increase the total clearance rate of morphine in rats.

Objective To study the microcirculation pattern of expanded skin and its influence on skin blood supply. Methods The microvessel diameter, blood velocity and blood volume were recorded under the microcirculatory imaging system and the microvessel density was measured by enzyme histochemical staining and medical imagine analysis. Results Compared with the control group, all the recorded values rose obviously in every expanded groups ( P

Objective To explore the imaging features of breast cancer by molybdenum target roentgenography in order to improve the diagnostic level. Methods The mammographic features of 68 cases with breast cancer confirmed surgically and pathologically were studied retrospectively. Results Masses with high density, spicule signs and lobulate margins were found in 61, 43 and 32 cases, respectively. Calcification was found in 29 cases (42 6%), in which only 7 cases of calcification without mass were found. Conclusion The masses and calcification are the main radiological features in breast cancer. The consciousness of comprehensive examination should be emphasized in the diagnosis of breast cancer.

ObjectiveTo evaluate the effect of Rainbow Therapy on brain injury syndrome and cerebral palsy in children.Methods115 children with brain injury syndrome and cerebral palsy were treated by Point Massage Motorpathy (PMM)and patterning. ResultsCompared with control groups,the neurological development quotient (NDQ)of cerebral-palsied children increased by 28.2 in the group A (P<0.01),16.0 in the group B(P<0.01) and 18.7 in the group C(P<0.01) after 6 months therapy.The group A was significantly higher than that of the gruop B and C (P<0.01). Conclusions The Rainbow Therapy is effective for brain injury syndrome and cerebral palsy in children.It is important that the treatment should be started as early as possible.It is a convenient method that can be carried out at home.

Objective To observe the effect of bromodomain4 (brd4) inhibitor JQ1 on proliferation inhibition and apoptosis of Ph positive acute lymphocytic leukemia (Ph+ ALL) cells, and to explore the influence on the expression of brd4 and its downstream genes (myc and p53), and the reverse effect on bcr-abl.Methods Different concentrations of JQ1 were used on SUP-B15 cells.The proliferation inhibition rate was detected by MTT, the apoptosis rate was determined by flow cytometry (FCM), and the expressions of bcr-abl mRNA, brd4 mRNA, myc mRNA and p53 mRNA were detected by real-time fluorescent quantitative PCR (RT-PCR).Results Different concentrations of JQ1 inhibited SUP-B15 cells proliferation and induced cell apoptosis.The apoptosis rate was significantly increased compared with that in control group with a time-dose dependent manner.Median inhibitory concentration at 72 h was 1.0 pmol/L.At the same time, JQ1 decreased the transcription levels of bcr-abl mRNA, brd4 mRNA and myc mRNA, and increased the transcription level of p53 mRNA.Conclusions As a brd4 inhibitor, JQ1 can decrease the expression of brd4 to affect the expression of its downstream genes myc and p53, meanwhile, it can change the over expression of bcr-abl to suppress the proliferation of Ph+ ALL cells and induce apoptosis.

Objective To investigate the influence of ethanol on the toxicokinetic profiles of ketamine and its main metabolite norketamine in rabbits.Methods Ketamine hydroehloride Wills administered orally to the rabbits at a dose of 15mg/kg in the ketamine-treated group.Ketamine hydrochloride combined with ethanol at a dose of 15 mg/kg and 3.0g/kg respectively was administered orally to those of the ethanol-coadministration group.The serum and urine samples were collected before administration and at different time points after drug delivery.The concentrations of ketamine and norketamine were determined by GC and GC/MS.Compartment model and toxicokinetics parameters were assessed by WinNorLin program.Results The mean serum concentration-time profile of ketamine after oral administration was fitted to a two-compartment open model with first order kinetics and not affected by ethanol.The K_(10),AUC and β of ketamine in rabbits of ethanol-coadministration group increased as compared with those of ketamine-treated rabbits,while T_(1/2K_(10)),T_(1/2β),A and C_(max)decreased(P＜0.05).Meanwhile,the K01,A,B and C_(max) of norketamine,the metabolite of ketamine increased in ethanol-coadministration group and T_(1/2K01) and Tmax were lowered than those in ketaminetreated group(P＜0.05).Difference of the other toxicokinetics parameters including V/F,K_(10),K_(12),K_(21),AUC,T_(1/2K_(10)),T_(1/2α),T_(1/2β) and β were not statistically significant between two groups(P＞0.05).Conclusion Ethanol may accelerate elimination of ketamine and the metabolism of ketamine to norketamine and has little effect on the absorption of ketamine,suggesting that interaction between ethanol and ketamine should be considered in cases of co-abuse of the two drugs.

Objective To evaluate the efficacy of etanercept in active ankylosing spondylitis (AS) pa-tient for 48 weeks by tapering the dosage of etanercept every 12 weeks. Methods 52 patients with active AS were enrolled in this study , and 47 patients finished 48 Weeks of observation. 50 mg etanercept was applied subcutaneously once a week for 12 weeks , and was tapered to 50 mg every two weeks for another 12 weeks , and then 25 mg every two weeks for another 24 weeks. BASDAI, BASFI, BASMI, ASDAS, as well as Serum levels of CRP and ESR were doaunented at week 0, 12, 24 and 48, respectively. Result Among the 47 active AS patients, 40 (85.1%) were male, with mean disease duration of 4.1 ± 3.8 years. After 12 -week treatment with 50 mg etanercept weekly, the scores of BASDAI, BASFI, BASMI, ASDAS, as well as levels of ESR and CRP, declined significantly compared to the baseline (P < 0.05, respectively). Despite of tapering the dosage of etan-ercept gradually, most of the patients (87.2%, 41/47) kept in ASAS 40 response during the following 36 weeks. No severe adverse events were observed during the treatment period. Conclusion This study demonstrat-ed the clinical efficacy of etanercept in patients with active AS. A dosage reduction strategy could maintain the clinical efficacy of etanercept during 48 weeks , which indicates that gradually tapering etanercept might be a po-tential effective, economic and safe way for active AS patients.

Objective To investigate the effects of triptolide (TP) on proliferation and apoptosis of acute myeloid leukemia cell line MV411 with FMS-like tyrosine kinase 3 internal tandem duplication (FLT3-ITD), and its effect on PI3K-Akt-mTOR pathway. Methods MTT assay was used to detect the proliferation inhibition of MV411 cell proliferation treated by different concentrations of TP in 24, 48 and 72 h. Flow cytometry was used to measure the cell apoptosis rate at 48 and 72 h. Real-time fluorescent quantitative PCR was used to detect the expression of FLT3, PTEN, PI3K, Akt, mTOR mRNA on PI3K-Akt-mTOR pathway. Results After treated by 0, 5, 10, 20, 40, and 80 nmol/L TP in 24, 48 and 72 h, the viability of MV411 cells was inhibited in a time-dose dependence manner. MV411 cells was treated by 0, 10, and 20 nmol/L TP after 48 and 72 h, the cell apoptosis rates were rising with the increasing of drug concentration, there were statistical significances [48 h:(3.30±0.20) %, (17.10±0.36) %, (35.67±0.61) %, 72 h: (7.37±0.32) %, (49.33± 0.40)%, (68.92±0.11)%, all P=0.000]. The expressions of FLT3, PI3K, Akt, and mTOR mRNA were down-regulated and PTEN mRNA expression was up-regulated by TP. Conclusion TP may inhibit the proliferation and induce apoptosis of MV411 cells by affecting the expression of PI3K-Akt-mTOR pathway related genes.

Objective To analyze the morphological matching rate with a digital image recognition system in pre-and post-orthodontic treatments,and to provide forensic dentistry evidence for individual identification.Methods High-resolution digital images of the palatal rugae were taken under particular conditions from each patient in pre-and post-orthodontic treatments.Features of each digital image were extracted using a digital image recognition system and collected in the palatal rugae database.Data of the palatal rugae werematched by MATLAB software system.Results From the matching results,the accuracy rate of individual identification of orthodontic patients was 100％.The accuracy rate in matching palatal rugae patterns in pre-and post-orthodontic treatments was 95.67％.The results were statistically significant with P＜0.05.Conclusion Palatal rugae pattern is highly individual-specific.The morphologyofpalatal rugaecould bechangedby theorthodontic treatment,however,these changes may not greatly influence individual identification in forensic dentistry,providing a new potential to individual identification.