Objective:To assess the mechanism of exacerbation of colonic damage in rat colitis model induced by trinitrobenzene sulfonic acid(TNBS)treated wi th celecoxib(a selective COX-2 inhibitor).Methods:The rats w ere randomized in to four groups.Group 1 and Group 2 were study groups.Group 3 and Group 4 were control groups.Colitis was induced by intracolonic administration of TNBS(25 g /L)in a vehicle of 50% ethanol(0.25 mL)of study groups.The rats of study gro ups were treated orally,beginning 3 h before induction of colitis and continuin g twice per day thereafter for up to 7 d,with celecoxib(1.25 mg/kg,Group 1)a nd distilled water(1 mL/0.3 kg,Group 2)respectively.In control experiments,the rats of Group 4 were treated orally with celecoxib(1.25 mg/kg)twice per da y for up to 7 d.Group 3 rats were healthy control rats.All the rats that survi ved until the end of the experiment(d 7)were killed and the severity of coloni c inflammation was assessed.The COX-2 protein expression in colon tissues was e xamined by immunohistochemistry.Results:The colonic damage of Group 1 was exac erbated as compared with Group 2.The inflammatory index of colon tissues of Gro up 1(8.5?2.5)was significantly reduced,as compared with Group 2(13.5?1.9,P

To explore the role of β-endorphin (β-EP) in the pathogenesis of the acute encephaledema, the levels of β-EP in both of plasma and CSF were determined by radioimmunoassay in 69 children with infection of central nervous system consisting of 39 cases with encephaledema and 30 cases without encephaledema, respectively. Another 19 cases without intracranial infection were as the control group. The results showed that the levels of plasma and CSF β-EP in the encephaledema group (50.74 ng/L±26.60ng/L，62.72ng/L±39.23ng/L) were significantly higher than those in without encephaledema group (32.78 ng/L±21.2ng/L，34.13ng/L±30.26ng/L)and the normal group (14.83ng/L±6.55ng/L，9.77ng/L±6.33ng/L)，respectively (P＜0.01).It is concluded that β-EP plays an important role in the occurrence and development of encephaledema in children with the infection of central nervous system.

Objective To investigate the relationship of pancreatic β-cell function and insulin resistance with microalbuminuria in a cross -sectional study of patients with type 2 diabetes.Methods A total of 524 partici-pants with type 2 diabetes were recruited in this cross -sectional study.All subjects'height,weight,waist circumfer-ence and blood pressure were measured.Venous blood samples were drawn to measure fasting plasma glucose (FPG), fasting lipids,glycated hemoglobin A1c (HbA1c),fasting C -peptide (FPC).24h -urine was collected to measure urinary albumin excretion rate (UAER).Homeostasis model assessment of pancreatic β-cell function (HOMA -B) and insulin resistance (HOMA -IR)were estimated using fasting plasma C -peptide.According to HOMA -B quar-tile,the subjects were divided into four groups,including q1 -q4.According to HOMA -IR,the subjects were also divided into four groups,including Q1 -Q4.We assessed the crude associations across quartiles of these data with demographic and clinical parameters using a nonparametric test for trend across ordered groups (trend using Stata software).Multivariable logistic regression analysis was performed to assess the relationships of pancreatic β-cell function and insulin resistance with microalbuminuria in patients with type 2 diabetes.Results Trend test showed that UAER gradually reduced with increase of HOMA -B.The UAER values in subjects with q1,q2,q3 and q4 were 8.92(5.53 -28.65),8.55(5.52 -20.95),7.57(4.79 -19.83)and 7.84(5.23 -14.38)μg/min,respectively, and the trend was statistically significant(z =-2.1,P <0.05 ).With HOMA -IR increasing,UAER gradually increased.The UAER values in subjects with Q1,Q2,Q3 and Q4 were 6.73(4.85 -16.52),8.61 (5.2 -20.37), 8.31(4.88 -27.04),8.75(6.03 -25.21)μg/min,respectively,and the trend was also statistically significant(z =2.41,P <0.05).Multivariable logistic regression analysis showed that subjects with the highest quartile of HOMA -B had lower possibility of microalbuminuria than patients with the lowest quartile of HOMA -B (adjusted OR q4 vs. q1 =0.39,95% CI:0.20 -0.76,Wald =7.59,P =0.006).Subjects with the highest quartile of HOMA -IR had higher risk of microalbuminuria than those with the lowest quartile of HOMA -IR (adjusted OR Q4 vs.Q1 =2.00, 95% CI:1.08 -3.72,Wald =4.84,P =0.028).Conclusion Insulin resistance is associated with an increased prevalence of microalbuminuria in type 2 diabetes,while improved pancreatic β-cell function is linked to decreased rates of microalbuminuria for those patients.

Objective: To investigate the effect of the gene interfering technology on fatty acid synthase (FAS) gene silencing for lipid contents in human hepatic cell line HepG2 and to study the lipid metabolism related gene expression in HepG2 cells. Methods: A total of 3 pairs of small interfering RNA (siRNA) targeting different sequences of FAS mRNA were synthesized as FAS-siRNA-1, FAS-siRNA-2 and FAS-siRNA-3, meanwhile, 2 controls were established as Blank control group, in which HepG2 cells were not treated, and Negative control group, in which HepG2 cells were transfected by non-effective siRNA. The mRNA, and protein expression levels of FAS in HepG2 cells were examined by real-time lfuorescence quantitative RCR and Western blot analysis to screen the most effective pair of siRNA for FAS gene silencing; and that speciifc siRNA was transtected to HepG2 cells for 48 hours to detect the intra-/extra-cellular TG, TC levels and the mRNA expression related to lipid metabolism in HepG2 cells. Results: The screening experiment indicated that FAS-siRNA-3 was most effective for FAS gene silencing. Compared with Blank control group, the mRNA and protein expressions in FAS-siRNA-3 transfected HepG2 cells (Transfected group)decreased to (52.33 ± 3.07) % and (51.57 ± 3.14) % respectively. Compared with Blank control group, Transfected group had the reduced intra-/extra-cellular TG levels and reduced extracellular TC level; while increased mRNA expression of hepatic lipase,P<0.0001 and decreased mRNA expression of TG transfer protein in HepG2 microsome,P<0.05. Conclusion: FAS gene silencing could signiifcantly decrease the intra-/extra- cellular TG level and extracellular TC level in HepG2 cells, those ifndings need to be conifrmed by furtherin vivo andin vitro studies.

Objective To explore the clinical effect of three doses of mifepristone on patients with dysfunc-tional uterine bleeding.Methods 150 patients with dysfunctional uterine bleeding were chosen,and they were randomly divided into 3 groups,including low dose group (50 patients),middle dose group (50 patients)and high dose group (50 patients).All patients adopted routine treatment.On the basis of this,the low dose group received 6.25mg/d mifepristone,the middle dose group received 12.5mg/d mifepristone,the high dose group received 18.25mg/d mifepristone,continued 6 months.The influence of follicle stimulating hormone (FSH),luteinizing hor-mone (LH),estradiol (E),progesterone (P),volume of uterine and endometrail thickness of patients were observed. Results After treatment,the FSH,LH,E and P levels in the three groups were significantly decreased compared with before treatment (FSH:t=4.406,5.329,3.610,LH:t=4.563,6.134,4.455,P=0.000,0.000,0.000;P=0.000, 0.000,0.000;E:t=7.173,6.815,7.018,P=0.000,0.000,0.000;E:t=2.367,6.315,4.351,P=0.020,0.000, 0.000),and the difference were statistically significant (all P<0.05).Before and after treatment,FSH,LH,P levels among the three groups had no obvious differences (P>0.05 ).Compared with the low dose group,E levels in the middle dose group and high dose group significantly decreased(t=3.850,2.085,P=0.000,0.004).Before and after treatment,the uterine volume among the three groups had no significant difference (P>0.05 ).After treatment,the functional uterine bleeding symptoms were significantly relieved in the three groups,the effective rate was 100%.The recurrence rate of the low dose group was 32%,which was significantly higher than 8%and 10%of the middle dose group and high dose group.The amenorrhea rate of the middle dose group and high dose group(6% and 2%)was significantly lower than that of the low dose group (46%).Conclusion The treatment of 12.5mg/d mifepristone is effectively adapted to patients with dysfunctional uterine bleeding.

Objective The lyophilized pilose antler water extract(PAE) was isolated,and their cell proliferation on PC12 cells was observed.Methods S-200 Size-exclusive gel and DEAE negative ion-exchange liquid chromatograph were employed to fractionate the PAE.SDS-PAGE was employed to analyze the proteins composition of PAE.The protein concentration was determined by Folin-Phenol assay.The proliferation rates of PC12 cells were measured by MTT assay.Results The proliferation rate of PAE on PC12 cells at 13.3 mg/mL was 47%(P

Objective: To investigate the effect of the acid inhibitor-Lansoprazole on the distribution of Helicobacter pylori (H.pylori) in stomach. Methods: Biopsy specimens were taken from the duodenal ulcer patients who underwent gastroscopy before and after the treatment of Lansoprazole. The biopsy specimens were taken from the lesser curvature of the antrum and the greater curvature of the corpus respectively. H&E and Warthin-Starry staining were used for detecting the changing of active gastritis and the positive rate of H.pylori. Results: (1)The positive rates of H.pylori before treatment, 4 weeks after treatment and 3 months after treatment, in the lesser curvature of the antrum were 93.02%, 58.14%, and 86.05%, respectively. The positive rate and density of H.pylori 4 weeks after treatment were greatly decreased compared with those before treatment (P

Objective To establish the population pharmacokinetics(PPK)model of Lamotrigine(LTG)in children with epilepsy in China for promoting individualized dosage regimen. Methods The sparse data of LTG serum concentrations from 60 pediatric patients with epilepsy were collected. One hundred and fourteen serum concentration points were divided into LTG+valproic acid (VPA) group(n=56),LTG+enzymatic inducer(E1)group(n=26),LTG+EI+VPA group(n=16)and single LTG group(n=16).The serum drug concentrations were the clinical routinely tested steadv state concentrations.The LTG PPK parameters were calculated using the non-parametric expectation maximization(NPEM) Program of USC*PACK software,and then a PPK model was established. Based on this model,LTG serum concentrations were predicted with Bayesian fitting program of USC*PACK software.Mean prediction error(MPE)and mean squared prediction error(MSPE) were calculated to evaluate the accuracy and precision of the concentration prediction and to valid the PPK model.Results The greatest likelihood was-192.87.Optimum PPK parameters were:Ka=(1.97 1.66)h~(-1);Vs=(1.07±0.89)L/kg;Kel=(0.05±0.05)h~(-1).The linear regression function Y_(OBS)=-0.09+1.05 Y_(PRED)(R~2=0.98,P<0.001),and determination of coefficient was 0.98.MPE was-0.16 g/mL,and MSPE was 0.28(μg/mL)~2.Conclusion A PPK model of LTG in children with epilepsy in China can be successfully established using the USC*PACK software, based on which LTG serum concentrations can be predicted accurately with a Bayesian approach.

Lyophylized antler powder was hydrolyzed by pepsin and trypsin separately and also simultaneously to give hydrolysates with special physical activities. Complete hydrolysis peptides with MW lower than 1 x 10(3) were collected for assay of angiotensin I-converting enzyme (ACE) inhibitory activity, antioxidant activity and proliferative activity toward UMR-106 osteoblast cells. The results of the experiments revealed that all hydrolysates exhibited potent hydroxyl radical scavenging activity with an IC50 value less than 1 mg/ml which was much lower than the value of 5.5 g x L(-1) for vitamin C. The peptic and peptic tryptic hydrolysates demonstrated strong angiotensin I-converting enzyme (ACE) inhibitory activity. The tryptic hydrolysate increased the proliferation of the UMR-106 cells by 73.43%. The results verified the traditional use of antler in bone-strengthening, anti-aging. The exploratory studies on the ACE inhibitory activity of antler hydrolysates indicated that the hydrolysates might be potentially useful in prevention and treatment of hypertension. Further purification of peptides contributing to the antioxidant activity, angiotensin I-converting enzyme-inhibitory activity and proliferative activity toward osteoblasts from antler hydrolysates is warranted.
Angiotensin-Converting Enzyme Inhibitors ; metabolism ; Animals ; Antioxidants ; metabolism ; Antlers ; chemistry ; metabolism ; Biphenyl Compounds ; metabolism ; Cell Proliferation ; drug effects ; Deer ; Endopeptidases ; metabolism ; Free Radical Scavengers ; Hydrolysis ; Hypertension ; chemically induced ; Pepsin A ; metabolism ; Peptides ; pharmacology ; Peptidyl-Dipeptidase A ; metabolism ; Picrates ; metabolism ; Trypsin ; metabolism

Objective To observe the clinical application and nursing of Icare rebound tonometer.Methods Intraocular pressure (IOP) measurements were performed on 112 cases (112 eyes) with ICARE rebound tonometer, measure on central cornea 2mm distance to temporal and nasal limbus corneae respectively.Results The results of intraocular pressure measurement on central cornea, 2mm distance to temporal and nasal limbus corneae are (15.4±3.4),(15.8±3.6),(15.6±3.4)mm Hg. There were no significant difference among them(F=0.325,P>0.05), but they have a good consistency.Conclusions There was good consistency on three different position on IOP measurements. The nursing is important for correct measurement.