By using the cytochemical methods, the activity of lysosomal acid phosphatase (ACP) and arylsulphatase (ArSase) in liver cells of the three kinds of vertebrates, guinea pig, pigeon and toad, was observed. The results show that the distribution of the two enzymes has some difference in the hepatocytes of all three kinds of animals. There are four forms of ArSase localization in the dense bodies of hepatocytes. Furthermore the three kinds of animals have different ArSase localization characteristics. The biological significance of these phenomena was discussed.

Guinea pig, pigeon and toad are the vertebrates on different evolution level. The acid phosphatase content in the hepatocytes of centrilobular area and periportal area of hepatic lobules were quantitatively measured by microspectrophotometer and image analyser. The results showed that the content of acid phosphatase of hepatocytes was highest in guinea pig, lowest in pigeon, and toad in between the both. The average density of acid phosphatase distribution in the hepatocytes increases according to the evolution order. The significance of this phenomenon was discussed.

Aim To study the chemical constituents of the underground part of Ligularia pleurocaulis (Franch.) Hand-Mazz.. Methods The dried roots and rhizomes of L.pleurocaulis were extracted with methanol. Isolation and purification were performed by silica gel column chromatography and recrystallization etc. Structures of the pure compounds were established on basis of spectral analysis. Results Twelve compounds were obtained from L.pleurocaulis, they were 6-angeloyloxy-furanoligu-larenone (1), 2-oxo-3-hydroxy-eremophila-1(10),3,7(11),8-tetraen-8,12-olide (2), tiglic acid (3), oleanolic acid (4), lupeol (5), β-sitosterol (6), daucosterol (7), caffeic acid (8), emodin (9), 7-methoxy-coumarin (10), ferulic acid (11) and 4-hydroxy-2,5-dimethoxy-benzaldehyde (12). Conclusion Compound 1 is a new eremophilane and compound 2 is a new natural compound. All above compounds were obtained for the first time from L.pleurocaulis.

Objective To investigate the effect of parecoxib on hippocompal inflammation following partial hepatectomy in aged rats.The effects of selective COX-2 inhibitor (parecoxib) on hippocampal inflammation were also evaluated.Methods Seventy male rats,aged 20 months,weighing 500-600 g,were randomly divided into three groups: control (n=10),surgery (n=30),and parecoxib (n=30).Control animals received sterile saline to control for the effects of injection stress.Rats in the surgery group received partial hepatectomy under isoflurane anesthesia and sterile saline injection.Rats in the parecoxib group received surgery and anesthesia similar to surgery group rats,and parecoxib treatment.On postanesthetic day 1,3 and 7,animals were euthanized to assess the hippocampal COX-2 expression,PGE2 production and caspase-3 expression.Results Surgery significantly increased the expression of COX-2 mRNA and protein expression,PGE2 production and caspase-3 protein expression on day 1 postoperatively (P<0.01),until day 3 (P<0.05) compared to control group.Parecoxib treatment group significantly suppressed COX-2 mRNA and protein expression,PGE2 production and caspase-3 protein expression on postoperative day 1 and day 3 (P<0.05 or P<0.01),in comparison with the surgery group.There was no significant difference between control group and other groups of the expression of COX-2 mRNA and protein expression,PGE2 production and caspase-3 protein expression on day 7.Conclusion Partial hepatectomy induces a short-term hippocampal inflammatory response in the rats.Parecoxib suppressed the hippocampal inflammation via the down-regulation of COX-2 mRNA and protein,PGE2 and caspase-3 protein in rats following partial hepatectomy.

This paper reviewed that high-intensity interval training (HIT) is effective on cardiorespiratory fitness and walking ability, but limited in quality of life in stroke paitents. More researches are needed to explore the differences from HIT to low and moderate intensi-ty continuous training .

Objective:To explore a scientific,complicated sampling method and corresponding formulas for sensitive question survey.Methods:Cochran W.G.'s classic sampling theories,two randomized response technique(RRT) models,total probability formulas,and properties of mean and variance were used in this study.Results:Formulas for the estimation of the population proportion and its variance for dichotomous sensitive questions on Greenberg model in cluster sampling and stratified cluster sampling were deduced.Formulas for the estimation of the population mean and its variance for quantitative sensitive question on the additive constant model in cluster sampling and stratified cluster sampling were deduced.Our survey methods and formulas were successfully applied in surveying the pre-marriage sex and cheating in examination in Soochow University.Conclusion:Our survey methods and formulas on two RRT models for sensitive question survey in cluster sampling and stratified cluster sampling have high reliablility.

Objective To investigate the effects of rosiglitazone on the cardiomyocyte apoptosis and expression of Bax and Bcl-2 in type 2 diabetic rats. Methods 8 weeks old SD rats were feeded with high calorie for one month, and then were intraperitoneally injected with a low dose of STZ (30mg/kg). The diabetic and control rats were killed at the 12th and 24th weeks after establishing model, respectively. Cardiomyocyte apoptosis was evaluated by TUNEL and flow cytometry. Flow cytometry was also used to detect the protein expression of Bax and Bcl-2. Results Compared with control group, apoptotic cells number, the Bax expression level and Bax/Bcl-2 ratio significantly increased in the diabetic rat hearts (P

Objective To find a proper way for accurate results on completing blood counts.Methods Based on the results from automatic hematology analyzer XE-2100,set up the criteria for blood cell microscopic examination.1368 blood specimen were detected and the results were analyzed according to the criteria.Statistics on the data were made to evaluate the accordance between warnings of analyzer and manual examination,likewise the reliability of the criteria.Results Comparing with microscopic examination,analyzer warning on low PLT has good accordance,Kappa value was 0.95,U value was 35.19,P

Objective To investigate the effect of surgical trauma on the expression of COX-2 and PGE2in the hippocampus in aged rats. Methods Forty-five 18-month-old male SD rats weighing 500-600 g were randomly divided into 3 groups (n = 15 each): group Ⅰ control (group C); group Ⅱ anesthesia (group A) and group Ⅲ surgery + anesthesia (group S). Anesthesia was induced by intraperitoneal 1% pentobarbital sodium 50 mg/kg in group A and S. The animals underwent appendectomy and splenectomy under anesthesia in group S.Cognitive function was assessed by open field test and Y-mase test on the 1st, 3rd and 7th day after anesthesia and surgery (T1-3). The animals were sacrificed after behavior tests at T1.2.3 and the hippocampi were removed for determination of the expression of COX-2 mRNA (by RT-PCR) and PGE2 content (by ELISA). Results The time the animal spent in the central square was significantly prolonged, the number of crossing grid and standing on the back legs and the number of right response were decreased, the total reaction time was prolonged and the COX-2mRNA expression at T1 and PGE2 content in the hippocampus were increased at T1,2 in group S as compared with group C and A. There was no significant difference in the variables mentioned above between group C and A. Conclusion Surgical trauma can induce early postoperative cognitive dysfunction through up-regulation of COX-2 mRNA expression and by increasing PGE2 content in the hippocampus in aged rats.