Objective To probe into the influence of active nursing intervention on the ability of daily living of patients with senile dementia. Methods Nursing of daily living, training for self-care and cognitive capacity, safety management and psychological nursing were carried out in a total of 33 patients who suffered from senile dementia. 6 months later, the effect of nursing intervention was appraised. Re-sults The ability of daily living of 33 patients with senile dementia had obvious improvement after nursing intervention compared with that before nursing intervention. Conclusions Active nursing intervention can largely facilitate the ability of daily living of patients with senile dementia.

Objective To investigate the brain protective effects of isoflurane preconditioning for local cerebral is-chemia adult rat model by detecting HIF-1α, HO-1 and Bcl-2 expression level. Methods 84 two-month old Spra-gue-Dawley male rats were randomly divided into sham group, ischemia-reperfusion group ( MCAO group) and isoflurance preconditioning group (ISO group). ISO group was exposed to isoflurane for 30 min and then underwent a 90 min middle cerebral arterial occlusion (MCAO), while MCAO group underwent MCAO only. At 24 h after reperfusion all the groups were investigated by modified neurological severity score for neurological deficits, TTC staining for infarct percentage. Cerebral cortices were harvested for HIF-1α, HO-1 and Bcl-2 protein expression level detection at 6 h, 24 h and 72 h after reperfusion using RT-PCR and western blot. Results The mNSS score and infarct percentage in ISO group decreased significantly compared with those of MCAO group at 24 h after reper-fusion(P < 0. 05). Compared with the MCAO group, ISO group had significantly up-regulated protein levels of HIF-1α, HO-1 and Bcl-2 at 6 h and 24 h after reperfusion(P < 0. 05). There was no difference between ISO group and MCAO group for 3 gene expression at 72 h(P > 0. 05). Conclusion Isoflurane preconditioning plays short-term cerebral protective effect through the up regulation of HIF-1α, HO-1 and Bcl-2 gene expression.

Objective To investigate effect of decorin on proliferation and cell cycle of rabbit tendon cells in vitro so as to explore the role of decorin in tendon wound healing.Methods Tendon cells derived from the tissue of rabbits flexor tendon were harvested and cultured in vitro with decorin of 0.25,1.25,2.5,5 ?g/ml.After culture of 12,24 or 48 h,the cell proliferation rate was measured by MTT colorimetric determination.After 24-hour culture with 0.25?g/ml decorin,the morphology of tendon cells was obtained and the cell cycle distribution was detected by flow cytometer.Results The proliferation of tendon cells was inhibited after 12-hour culture and significantly increased after 24-hour culture with 0.25,1.25,2.5 ?g/ml decorin.However,5 ?g/ml decorin could increase the proliferation after 12-hour culture,increase after 24-hour culture,with no significant difference between 24 h and 48 h.decorin at 0.25 ?g/ml could significantly increase the cells at S phase and PI after 24-hour culture(P

Objective To study the RI value in HA to ocular blood flow in posthepatitis cirrhosis by CDFI.Methods The RI value of HA,OA,PCA,CRA in 32 normal person,102 posthepatitis cirhosis patients were studied by CDFI(U.S.A.Sequoia 512).Results The value of RI between HA to OA,PCA and CRA was 0.88,0.88,0.93 respectively.Conclusion A direct relationship is found between RI value of HA to ocular vascular,especially in HA to CRA.

Objective To explore the practical method and teaching effect of problem-based learning (PBL) pattern in teaching of gastrointestinal disease for seven-year-program students during their internal medical probation.Methods The traditional pattern (gastrointestinal diseases) and PBL pattern (hepatobiliary diseases) were applied in these students to assess the teaching effects by exam scores and questionnaire.Results ① There was no significant difference between traditional training and PBL by exam scores (P＞0.05).② The PBL approach was widely accepted by students,which could contribute to the improvement of their learning motivation.It developed skills,including self-directed learning,summarizing,and clinical thinking capability and so on.Conclusion The PBL approach is a practical learning strategy that can improve the teaching effect; therefore it should be wildly practiced in future works.

β- N-Acetyl- D-glucosaminidase ( NAGase, EC3.2.1.52) is a composition of the chitinases and cooperates with endo-chitinase and exo-chitinase to disintegrate chitin into N-acetylglucosamine. Pacific White Shrimp (P. vannamei) NAGase is involved in digestion and molting processes. Some pollutants in seawater affect the enzyme activity causing loss of the biological function of the enzyme, which affects the exuviating shell and threatens the survival of the animal. The effects of acetic anhydride on the enzyme activity for the hydrolysis of pNP-NAG have been studied. The results show that acetic anhydride can lead to reversible non-competitive inhibition at appropriate concentrations, and the IC50 is estimated to be 9.0 mmol/L. The equilibrium constants have been determined for acetic anhydride binding with the enzyme and/or the enzymesubstrate complexes. Inhibition kinetics of acetic anhydride on the enzyme has been studied using the kinetic method of the substrate reaction. The results suggest that at pH 6.2, the action of acetic anhydride on the enzyme is first quick equilibrium binding and then slow inhibition. The microscopic rate constants have been determined for inhibition and reactivation. The results show that k + 0 is much larger than k - 0, indicating the enzyme is completely inactivated at sufficiently large modificator concentration.

The endoscopic findings of 884 cases of colonic polyps with different pathological types were retrospectively analyzed.Among all cases,there were 418 cases of tubular adenoma (47.3％ ),92 cases of fluff tubular adenoma ( 10.4％ ),334 cases of inflammatory polyps ( 37.8％ ) and 40 cases of hyperplastic polyps (4.5％ ).There were significant differences in age,location,polyp surface morphology and Yamada grouping among colonic polyps with different pathological types (P ＜0.05).The average age of fluff tubular adenoma group [ (64 ± 12)y] was the highest among all patients; and the average diameter of polyps was the largest [ ( 1.38 ± 1.09 ) cm ],lobulated and mulbenry,polyps were the most common forms; and the majority of fluff tubular adenoma was Yamada type Ⅲ or Ⅳ.The results indicate that fluff tubular adenoma was associated with higher age,larger polyp size,surface morphology and Yamada grouping (P ＜0.05).

Objective To compare the effect of water-infusion colonoscopy and conventional air-infusion colonoscopy on the bowel cleanliness during withdrawing.Methods A single blind randomized controlled trial was conducted. 222 patients were randomly divided into water-infusion group (group A, 112 cases) and air-infusion group (group B, 110 cases). The cleanliness scores, scores improvement, pain scores, time of reaching cecum, depth of colonoscopy, rate of whole colon examination, adenoma detection rate (ADR), operator’s dififculty and complications were compared between the two groups.Results The cleanliness score during withdrawing was higher in group A [M(8)/IQR(1) vs M(8)/IQR(2),P = 0.000], the improvement was higher in group A [(0.53 ± 0.74) vs (0.23 ± 0.55), P = 0.000], the abdominal pain score was signiifcantly lower in group A [M(2)/IQR(1) vs M(4)/IQR(2),P = 0.000] and the ADR was higher in group A (36.61 % vs 23.64 %,P = 0.041). The operator’s dififculty evaluation score was signiifcantly lower in group A [M(1)/IQR(1) vs M(2)/IQR(1),P = 0.005]. There were no signiifcant differences at the time of reaching cecum, the depth of colonoscopy and the whole colon examination rate between the two groups.Conclusion Water-infusion colonoscopy could signiifcantly improve the bowel cleanliness during withdrawing scope, improve the ADR and reduce abdominal pain of patients, without increasing the time to reach cecum.

OBJECTIVE To investigate the correlations on hepatitis B virus(HBV)preS1-antigen(preS1-Ag)and HBV-DNA,HBV markers in patients with hepatitis B.METHODS The markers,preS1-Ag and HBV-DNA were determined by ELISA and PCR in 406 patients with hepatitis B and 80 healthy persons.RESULTS The positive rates of preS1-Ag in 160 patients with HBsAg(+)and HBeAg(+)were 84.4%.The positive rates of preS1-Ag in 246 patients with HBsAg(+)and HBeAg(-)were 42.3%;the difference between them was significant(?2=70.9,P

Aim To explore the effects of heat stress on TNF-?-induced fever and the content of cAMP in rat hypothalamus. Methods ①We examined the peak time of HSP70 expression in hypothalamus after heat stress; ②We studied the change of TNF-?-induced fever and the content of cAMP in hypothalamus after heat stress. Result The maximum expression of HSP70 in hypothalamus was attained at 12 h after heat stress. Heat stress limited TNF-?-induced fever and decreased the content of cAMP in hypothalamus. Conclusion Heat stress can inhibit TNF-?-induced fever in rats, and this effect may be related with the inhibition of cAMP synthesis induced by high expression HSP70 in hypothalamus.