Objective:To investigate the effect of extracellular signal-regulated protein kinase (ERK) on hepatic fibrosis autoreversibility and its mechanism. Methods: Animal model of hepatic fibrosis autoreversibility was established 6 weeks after 8-week CCl_(4 ) exposure. Then the activation, expression and distribution of ERK in the liver were investigated by Northern blot and immunohistochemistry during fibrosis reverse. RT-PCR and cDNA hybridization were used to detect the RNA and protein expression of ERK substrates. Results: The transcription of ERK was highly activated throughout the hepatic fibrosis (recovery.) ERK was located in the nucleus of hepatic stellate cells (HSCs) in fibrotic liver while it was mainly expressed in the hepatocyte cytoplasm of the lobule, sinusoid space, and perifibrous tissue as hepatic fibrosis resolved. Downstream molecules of ERK like S6 protein kinase (RSK1), c-fos, phospholipase A2, ion channels, and gastrointestinal hormone receptors were also found up-regulated during the whole course. Conclusion: ERK may be closely related to hepatic fibrosis reversibility and it may protect and promote proliferation of hepatocyte and induce apoptosis of HSC.

Objective: To investigate the therapeutic effects of Bawei Xilei San (BWXLS), a compound traditional Chinese herbal medicine, on mice with oxazolone-induced colitis and to explore the mechanisms. Methods: Thirty-two BALB/c mice were randomly divided into 4 groups (8 for each): normal control group, untreated group, hydrocortisone group and BWXLS group. Except for the mice in the normal control group, all mice were intrarectally administered with 3.0% oxazolone to induce colitis. Then the mice in the normal control group and untreated group were administered with 0.9% carboxymethyl cellulose sodium solution. Mice in the BWXLS group were intrarectally administered with 0.2 mg/g BWXLS and hydrocortisone group with 0.02 mg/g respectively for 5 days. The body weight and stool consistency and occult or gross blood were recorded to calculate the disease activity index (DAI). The mice were sacrificed at the 6th day. The macroscopic and histological changes of the colon were evaluated. The expressions of Toll-like receptor 4 (TLR4), nuclear factor-kappaB (NF-kappaB), and epithelial tight junction protein occludin were assessed by immunohistochemical method. The level of tumor necrosis factor-alpha (TNF-alpha) in colonic mucosa was evaluated by enzyme-linked immunosorbent assay. Results: The DAI, and macroscopic and histological changes in the BWXLS group were improved as compared with those in the untreated group (P<0.05) but were similar to those in the hydrocortisone group. The expression of occludin was significantly increased (P<0.05) while the expressions of TLR4, NF-kappaB and TNF-alpha were significantly decreased in the BWXLS group as compared with the untreated group, and were similar to those in the hydrocortisone group (P>0.05). Conclusion: Up-regulating the expression of occludin and down-regulating the expressions of TLR4 and NF-kappaB, and hence inhibiting TNF-alpha expression and improving the mucosa barrier function may be part of the mechanisms of BWXLS in treating oxazolone-induced colitis in mice.

Objective To explore the effective treatment in children of abdominal allergicpurpura.Methods To retrospectively analyze the clinical data of 54 children with abdominal allergicpurpura.54 cases were divided into three groups.Each 18 cases in group Ⅰ,groupⅡ,and group Ⅲ.It was used large doses of methylprednisolone in the group Ⅰ,ranitidine in the groupⅡ,and cimetidine in the groupⅢ,based on conventional treatment.To analyze the effect and adverse effect after the treatment.Results The effect of groupⅠ,and groupⅡ,was significantly higher than group Ⅲ(t=11.775,8.901,7.613,5.786,10.105,12.347,all P＜0.05).There was no significant difference between groupⅠ,and group Ⅱ(P＞0.05).The adverse effect of groupⅠ,was significantly higher than the other groups(x2=4.500,5.017,all P＜0.05).Conclusion The treatment of hormone had obvious effect in children with abdominal allergicpurpura,but it had some risks in the gastrointestinal,so we should close observe the gastrointestinal tract in children.Ranitidine and cimetidine are the drugs of inhibiting gastric acid secretion,but the ranitidine much better than cimetidine.

Objective To study the chemical constituents from the seeds of Ziziphus jujuba var.spinosa,which is used as a sedative herbal medicine in China.Methods The constituents were separated and purified by silica gel column.Their structures were elucidated based on their physicochemical properties and spectral analysis.Results Six compounds were obtained from 95% EtOH extracts in the seeds of Z.jujuba var.spinosa.They were identified as 2?,3?-dihydroxy-lup-20(29)-en-28-oic acid methyl ester(Ⅰ),?-sitosterol(Ⅱ),betulin(Ⅲ),betulinic acid(Ⅳ),hexadexanoic acid 2,3-dihydroxypropyl ester(Ⅴ),and daucosterol(Ⅵ).Conclusion Compound Ⅰ is a novel lupane triterpene named as alphitolic acid methyl ester,compound Ⅴ is obtained from the seeds of Z.jujuba var.spinosa for the first time.

Object A study on the ingenol-type diterpene esters of Euphorbia kansui T. N. Liou ex T. P. Wang. Methods Their structures were elucidated by spectral analysis, especially 2DNMR ( 1H- 1HCOSY, HSQC, HMBC and NOESY). Results Six ingenol-type diterpene esters were isolated successfully, two of them were identified as 3-O-(2′E, 4′Z-decadienoyl)-20-O-acetylingenol (Ⅰ) and kansuiphorin C (Ⅱ). Conclusion NMR data of compound Ⅰ and 13 CNMR data of compound Ⅱ were first reported. On the basis of variety of 2DNMR experiments, NMR data of compound Ⅰ and Ⅱ were well assigned.

Proanthocyanidins is an effective antioxidants and free radical scavenger derived from kinds of plants in nature. It has some advantages that high absorptivity and bioactivity, low toxicity, which contain broad pharmacological functions such as dropping high blood pressure, reducing blood fat, anti-inflammatory, anti-cancer, anti - aging, anti - fatigue and preventing cardiovascular and cerebrovascular diseases. In this paper, we summarized its physicochemical properties, pharmacologic action and the ophthalmological studies which mainly in keratopathy, cataract, glaucoma, uveitis, retinopathy, traumatic optic neuropathy and asthenopia. With the deeper research and more unequivocal in the pharmacological mechanism of proanthocyanidins, it should make the most of its values in medicine. And some more economical and effective drugs are expected to be provided for the clinical ophthalmology in the near future.

Objective: To establish a dissolution determing method for the two primary ingredients atenolol and nifedipine in YakepingⅡcapsules. Methods:A small glass method was adopted with the rotation rate of 50 r·min-1 . According to the dissolution conditions in Japan “quality of medical drugs information set” with appropriate adjustments in accordance with the actual situation of the samples, different YakepingⅡ capsules were determined by HPLC respectively in pH 1. 2 artificial gastric solution ( containing 0. 5% sodium dodecyl sulfate), pH 4. 0 acetate buffer(containing 0. 5% sodium dodecyl sulfate), pH 6. 8 phosphate buffer(contai-ning 0. 25% sodium dodecyl sulfate) and water(containing 0. 25% sodium dodecyl sulfate). Results:The assay displayed a good lin-earity over the concentration range of 10-30 μg·ml-1 for atenolol and nifedipine(r=0. 999 6 and r=0. 999 8), and the recovery of the two components in the different medium was 99. 64%(RSD=0. 73%), 99. 55%(RSD=0. 65%), 99. 53%(RSD=0. 47%)and 99.54% (RSD=0.51%), 99.52%(RSD=0.67%), 99.52%(RSD=0.72%), 99.51%(RSD=0.63%)and 99.61%(RSD=0. 59%)(n=9). The dissolution of different batches of YakepingⅡcapsules in the four media showed the similar behavior. Conclu-sion:The method is simple, accurate and reproducible in the dissolution determination of atenolol and nifedipine in YakepingⅡ cap-sules.

Adult ; Hemoperfusion ; Humans ; Male ; Paraquat ; blood ; poisoning

Objective To investigate the application and effect on the performance training of adverse events, and to improve the quality of nursing teaching. Methods Totally 120 new graduate nurses in our hospital were randomly divided into study group(n=60)and control group(n=60). Study group used performance training while control group used traditional training mode and evaluation was made from the adverse event knowledge score , number of adverse events and satisfaction degree of stu-dents. Results Adverse event knowledge score of study group (9.57±0.563) was obviously higher than that of control group(84.90±3.245). Satisfaction degree of students in study group(9.57±0.563) was higher than that of control group(7.35 ±0.917), with statistical differences(P<0.01). Number of ad-verse events(n=3) was obviously lower in study group than in control group(n=15), with statistical differences(P<0.01). Conclusion In adverse events teaching, performance training can be helpful in arousing students' interests in learning. Experiences of self-examination and self-correction also make the students have a deep impression on knowledge, which improves the quality of adverse events teaching and reduces the incidence of adverse events in the new graduates.

This is a review of student enrollment by nursing school of PUMC from 2003 to 2006.The paper covers the introduction of national policy for student enrollment,analysis of PUMC student background and challenge in the processing of student admission.The information supports the reformation of enrollment in terms of matriculation including objective and constructed interviewing approach.