Objective To explore the effect of continuous hyperglycemia on learning and memory capacity in rats, and to observe the changes of expressions of ubiquitin and apotosis-related proteins, so as to provide a relative basis for diabetic encephalopathy. Methods The male SD rats were randomly divided into normal control group and diabetes mellitus (DM) group. The DM rats was made by intraperitoneal injection of streptozocin (STZ). The capacities of learning and memory were tested by Y-maze. The structure changes in frontal lobe cortex and hippocampus were observed by Nissl's staining and immunohistochemistry. The apoptosis cell count was measured by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL). The expressions of Bcl-2 and P53 were assessed by Western-blot analysis. The expression of ubiquitin mRNA was detected by reverse transcription-polymerase chain reaction (RT-PCR). Results In DM rats, the learning and memory capacities were worse than in control rats (P＜0. 05), and the apoptosis cell counts in frontal lobe cortex and hippocampus were higher than in control rats, the expression of Bcl-2 gene was reduced while the expressions of ubiquitin and P53 gene were increased (P＜0. 05). Conclusions In the frontal lobe cortex and hippocampus, the expression of Bcl-2 gene is reduced while the apoptosis cell numbers and ubiquitin P53 gene expression are increased, which may contribute to neurodegeneration in DM rats.

Objective To investigate the protective effects and the mechanisms of anisodamine on experimental liver damage. Methods The experimental liver injury model was established by ANIT and CCl 4.Studies were made after ANIT or CCl 4 administration,and the control group compared with the experimental groups which were treated by anisodamine on the pathologic morphology, biochemical indices and the contents of Ca 2+ ,MDA and the ability of total antioxidation in the liver.Effects of anisodamine on sleeping time of the mice toxicated by given sodium phenobarbital were also determined.Results The elevation of ALT, ALP, BiL, CHE and the decrease of serum protein in ANIT or CCl 4 liver damage were significantly improved by treatment with anisodamine .It also remarkably diminished the hepato-cellular and chole-epthelial-cellular degeneration and necrosis induced by ANIT or CCl 4.The contents of Ca 2+ ,MDA and the ability of total antioxidation in the liver were all decreased by treatment with anisodamine. The sleeping time induced by sodium phenobarbital in the toxicated mice was reduced by anisodamine. Conclusion Anisodamine have significant protective effects on liver injury of intrahepatic cholestasis and chemical hepatitis and the mechanism may be associated with blocking M-receptor and enhancing antioxidation and antitoxic activity in liver.

Objective Analysis of the complete genome sequence about the newly emerged pandemic norovirus GⅡ.4 genotype, to understand its variation characteristics.Methods 264 patients were collected with diarrhea.The RNA was extracted from 264 fe-cal specimens and cDNA was synthetized.The positive samples were amplified by PCR,the amplified fragments were sequenced. The complete genome sequences of the norovirus was sequenced and analyzed.Results A new norovirus variant strain of Jingzhou GⅡ.4,a pleiston of Sydney GⅡ.4 was isolated.A large variation was found in the new variant subtype,which was mutated inclu-ding in the hypervariable P2 domain of the major capsid protein VP1.Conclusion The result demonstrates the variant strain of Sydney GⅡ.4 was spread to China.VP1 of norovirus GⅡ.4 is evolving rapidly.The spread and evolution situation of the norovirus GⅡ.4 need to be closely monitored in China for the development of effective vaccines and therapeutic monoclonal antibodies.

Objective To ascertain the pressure ulcer prevalence among secondary and tertiary general hospitals in different areas of Guangdong Province, and describe pressure ulcer related nursing measures in hospitalized patients. Methods A cross-sectional descriptive design was used in the present study. 5 secondary and tertiary general hospitals including 25164 hospitalized patients from different regions in Guangdong Province were recruited. There were 267 pressure ulcer patients among them. Minimum Data Set (MDS) was used to measure prevention measures of hospitalized patients. Pressure ulcer patients′questionnaire was used to measure medical treatment of pressure ulcer patients. Results The overall prevalence rates of pressure ulcers in the 25 hospitals range from 0 to 3.49%, with an average of 1.26%. The prevalence rate in the secondary general hospitals was 1.8%(41/2266), which was significant higher than that of in the tertiary general hospitals(1.0%, 226/22998), χ2=13.48, P<0.01. For the hospitalized patients at risk, 42.0%(1408/3353) of patients didn′t use any systemic support surface, 45.8%(1537/3353) of patients didn′t use any local support surface. In the pressure ulcer patients, 35.2%(94/267) of patients didn′t use any systemic support surface, 14.2% (38/267)of patients didn′t use any local support surface, and 61.4%(164/267) of pressure ulcer patients didn′t use any skin care products. Conclusion The prevention measures of pressure ulcer in Guangdong province were not effective, further improvements are still required.

Objective To explore the value of automatic photography in the observation of results of Schistosoma japoni?cum miracidium hatching experiments. Methods Some fresh S. japonicum eggs were added into cow feces,and the samples of feces were divided into a low infested experimental group and a high infested group(40 samples each group). In addition,there was a negative control group with 40 samples of cow feces without S. japonicum eggs. The conventional nylon bag S. japonicum miracidium hatching experiments were performed. The process was observed with the method of flashlight and magnifying glass combined with automatic video(automatic photography method),and,at the same time,with the naked eye observation meth?od. The results were compared. Results In the low infested group,the miracidium positive detection rates were 57.5% and 85.0%by the naked eye observation method and automatic photography method,respectively(χ2=11.723,P<0.05). In the high infested group,the positive detection rates were 97.5%and 100%by the naked eye observation method and automatic pho?tography method,respectively(χ2= 1.253,P > 0.05). In the two infested groups,the average positive detection rates were 77.5% and 92.5% by the naked eye observation method and automatic photography method,respectively(χ2 = 6.894,P <0.05). Conclusion The automatic photography can effectively improve the positive detection rate in the S. japonicum miracidi?um hatching experiments.

AIM : To observe the effects of naoyikang on the capability of learning and memory in Alzheimer’s disease model mice. METHODS : The mice model was established by intraperitoneal injection of D BZ Gal and NaNO 2, the capability of learning and memory was tested on mice by electrical maze and water maze, the levels of superoxide dismutase (SOD) and malondialdehyde(MDA) of brain tissues were assayed by biochemical methods,and the changes in ultrastructure were observed by Transmission Electron Microscope. RESULTS : The capability of learning and memory of model mice decreased and the level of SOD of model mice decreased and MDA increased. Compared with the madel group, they were obviously improved in low, middle and high doses ( 2.4 , 7.2 , 24 g?kg -1 ?d -1 ) of naoyikang group ([WTBX P

OBJECTIVE To know about the urogentital tract infection caused by Ureaplasma urealyticum(Uu) and Mycoplasma hominis(Mh) and distribution and antibiotic susceptibility.METHODS Uu and Mh were isolated and their antibiotic susceptibility was detected by ICS kit from Lizhu company in Zhuhai.RESULTS Among the 246 samples,126 were positive(51.22%) of which Uu were 114,Mh 2,and both Uu and Mh 10;females were more apt to be infected(P

ition research with higher quality should be advocated.

AIM: To observe the protective effect of naoyikang-containing serum on cultured hippocampus neuron injury induced by D-galactose(D-gal).METHODS: Naoyikang-containing serum was prepared in rats administered with aqueous extract of naoyikang(6.84 g?kg-1?d-1).MTT,MAO-B and ATPase assay were used to measure the viability of hippocampus neurons.RESULTS: D-gal at concentration of 100 ?mol/L caused significant decrease in the viability of hippocampus neurons 24 h after the treatment.Naoyikang-containing serum increased the viability,ATPase activity and the expression of bcl-xl mRNA,decreased the MAO-B activity and the expression of bax mRNA in D-gal injured hippocampus neurons.CONCLUSION: Naoyikang-containing serum prevents hippocampus neurons from D-gal induced cytotoxicity.

OBJECTIVE To study the aminoglycosides modifying enzyme genes and intⅠ gene in Stenotrophomonas maltophilia in Chinese Armed Police Forces General Hospital.METHODS The samples of 27 multi-resistant S.maltophilia were collected from inpatiens from Jan 2006 to Oct 2007 in this Hospital.The sensitivity of the isolates to 14 antibacterial agents was determined using a broth induction method.The aminoglycosides modifying enzyme genes and intⅠ 1 gene were detected by PCR.RESULTS The multi-drug resistance of S.maltophilia was a serious problem.In 27 strains of S.maltophilia,the positive ant(2″)-Ⅰ were in 5 strains(18.5%),aac(3)-Ⅱ in 3 strains(11.1%)and aac(6')-Ⅱ in 1 strain(3.7%).The positive intⅠ gene was found in 11 strains(29.6%).CONCLUSIONS Multi-resistant S.maltophilia resistant to aminoglycosides mainly due to the presence of aminoglycoside modifying enzymes ant(2″)-Ⅰ,aac(3)-Ⅱ and aac(6')-Ⅱ.The aminoglycoside modifying enzymes ant(3″)-Ⅰ and aac(6)-ⅠZ were not detected carrying IntⅠ would be the reason of S.maltophilia resistant to aminoglycosides.