BACKGROUND: Macromolecules modified gold nanoparticles can be used in therapeutics, diagnostics, and other aspects, but most reports mainly focuses on the preparation of protein, DNA and small molecules of sugar modified gold nanoparticles, and the research on polysaccharide modified gold nanoparticles is superficial. OBJECTIVE: To prepare heparin-modified gold nanoparticles, studying their particle size and ultraviolet absorption spectra, and to determine the optimum reaction condition. DESIGN, TIME AND SETTING: The comparative observation of the experiment was performed at the Biotechnology Pharmaceutical Laboratory of School of Chemical Engineering in Wuhan University of Technology from April 2007 to September 2008. MATERIALS: Gold nanoparticles were prepared and preserved at 4 ℃. METHODS: Heparin with an aldehyde group (HEP-CHO) as reducing end was prepared by nitrous acid degradation method. HEP-CHO was further reacted with dimethyl sulfoxide solution containing 0.05 mL and 0.5 mL glacial acetic acid to synthesize heparin with thiol-group (HEP-SH) through reductive amination reaction. Heparin was then orientated immobilized in four bottles of dimethyl sulfoxide solution containing 0.5 mL glacial acetic acid by adding the thiol-group of HEP-SH and sodium cyanoborohydride for 2, 4, 6, and 24 hours. The obtained products were added in gold nanoparticle solution, and the heparin was fixed on the surface of gold nanoparticles by Au-S bonds. MAIN OUTCOME MEASURES: ① Maximum ultraviolet absorbance of gold nanoparticles before and after heparin modified; ② Average grain size of gold nanoparticles and heparin-modified gold nanoparticles. RESULTS: Gold nanoparticles with good particle size were prepared by using a rate of sodium citrate to chloroauric acid was 6:1 (mol/mol). The reductive amination reaction yield was higher when the more acetic acid was added to the solvent. The products were increased within 6 hours and 24 hours, but the difference was not significant. The average grain size and maximum ultraviolet absorbance of gold nanoparticles were 10 nm and 522 nm, and those of heparin-modified gold nanoparticles were 20 nm and 529 nm. CONCLUSION: Heparin-modified gold nanoparticles with good particle size are prepared, and the size can effect on the maximum ultraviolet absorbance. The optimum reaction condition for heparin immobilization is using a rate of dimethyl sulfoxide to acetic acid is 8:1 (mol/mol) as solvent of heparin, and the reaction time is 6 hours.

ObjectiveTo explore the influence of 3C bolus wizard on postprandial glucose levels in diabetic patients. MethodFifty-eight patients with type 2 diabetes in our hospital were monitored with continuous glucose monitoring system(CGMS), continuous subcutaneous insulin infusion(CSII)and CareLink(3C for short)for 6 days.The function of “3C” bolus wizard was applied during treatment and all the patients were given dietary nursing and health education.The glucose level was observed.ResultThe level of P2hBG of the 58 patients was between 6.4~10.7mmol/L in 3~6 days.ConclusionsBolus wizard plays an important role in “3C” treatment.It can make the postprandial glucose of patients satisfactorily controlled in a short time only to avoid insulin hypoglycemia because of large doses of insulin.At the same time,health education on patients can achieve remarkable results as well.

Objective To investigate the effects of compound Betamethasone on the expression of olfactory marker protein(OMP)in murine olfactory mucosa injured by influenza virus.Methods An animal model was developed by intranasal application of influenza virus to mice.Compound Betamethasone was injected i.p.(3.5 mg/kg)on day 2 and day 4 after the insult.The expression of OMP was tested by immunohistochemistry and Western blot.Results The expression of OMP was significantly downregnlated in the olfactory mucosa of influenza virus control group 1 and influenza virus control group 2;the expression of OMP was significantly upregulated in the olfactory mucosa of post-infection compound Betamethasone group 1 and post-infection compound Betamethasone group 2.Conclusion Compound Betamethasone can enhance the expression of OMP in the olfactory mucosa injured by influenza virus.

Objective To compare the specificity and sensitivity of antibodies against SSA and SSB,anti-M3 receptor polypeptide antibodies,anti-α-fodrin(IgG)antibodies in primary SjSgren's syndrome (pSS).Methods One hundred and ten pSS patients(mean age was 49.2±14.8.mean disease duration was 5.6±4.6),80 systemic lupus erythmatosis(SLE)patients(mean age was 25.5 4-4.6,mean disease duration was 2.5±1.2)and 80 rheumatoid arthritis(RA)patients(mean age was 44.6±3.5.mean disease duration was 4.2±1.1)were studied.Enzyme-linked immunosorbent assay was used to measure these antibodies.Results The seropositive rates of anti-SSA,anti-SSB antibodies,anti-M3 receptor polypeptide antibodies and anti-α-fodrin(IgG)antibodies were 45.5%,30.9%,78.2%and 77.3%,respectivelv in pSS.They were much higher than those in RA and SLE patients(P<0.05).Specificities of SSA、SSB antibodies,anti-M3 receptor antibodies and anti-α-fodrin IgG were 83.8%,97.7%.92.0%and 90.O% respectively.With the combination of these antibodies in the diagnosis of pSS.the Sellsitivity can be increased at least to 88.2%and the specificity was not decreased significantly.Conclusion Combination of these antibodies can significantly improve the sensitivity of these antibodies in the diagnosis of pSS.Anti-SSA and SSB antibodies,anti-M3 receptor antibodies and anti-α-fodrin(IgG)antibodies are specific antibodies for the diagnosis of pSS.

OBJECTIVE To decrease the infection rate in intensive care unit(ICU) effectively. METHODS To analyze the reason of infection in ICU,such as the infection of respiratory tract,the infection of urinary system,the vascular infection after therapy,and the infection of alimentary tract,and to raise the control measure of nursing. RESULTS To pay attention to the arrangement and setting in ICU,the implementation of the regulation of nursing strictly, the intravascular therapy,the correct realizing of nursing procedure,and the reinforcement of nursing management,in order to keep the low infection rate. CONCLUSIONS All nursing measure raised/above is very useful for the hospital infection control in ICU.

Objective To introduce a method to aid dental treatment for autistic children; midazolam oral sedation. Methods 10 autistic children who can not be managed under normal dental procedures were administrated oral midazolam (0.5mg/kg) before treatment. Once they were adequately sedated, dental treatment was carried out in outpatient. During the whole course, their finger oxygen saturation and heart rate were inspected. Painless methods were also applied. The duration of each treatment was controlled within 30min. When the procedure ended, the autistic children were inspected until recovery from sedation and then discharged with their parents. Results 10 children aged 4～10y totally underwent 17 visits to complete all dental treatment. The average ages were (6.00?1.89)y, body weight was (28.10?9.36) kg and Houpt scales were (4.71?0.77). They were all successfully sedated and managed and no severe complications were found. Conclusion The oral midazolam sedation showed satisfactory effects on this group of autistic children while studies of large samples are needed to draw a definite conclusion.

OBJECTIVE:To compare therapeutic efficacy and safety of lobaplatin or cisplatin combined with tegafur,gimeracil and oteracil potassium in the treatment of advanced metastatic breast cancer.METHODS:A total of 160 patients with advanced metastatic breast cancer were randomly divided into observation group and control group,with 80 cases in each group.Control group was given Cisplatin injection 30 mg/m2 intravenously,every 3 weeks Tegafur,Gimeracil and Oteracil Potassium capsules 50 mg orally after meal,twice a day,for consecutive 14 days.Observation group was given Lobaplatin for injection 30 mg/m2 intravenously,every 3 weeks+Tegafur,Gimeracil and Oteracil Potassium capsules (same usage and dosage as control group),every 3 weeks.A treatment course lasted for 3 weeks,and both groups received 2 courses.Short-term efficacies (ORR、DCR),chemotherapy effects of lymph node,lung,bone and liver,ADR and long-term efficacy were compared between 2 groups.RESULTS:After treatment,ORR(67.50％ vs.46.25％),DCR(85.00％ vs.66.25％),ORR of lymph node metastasis (71.43％ vs.47.83％),ORR of lung metastasis (60.71％ vs.40.00％),DCR of lung metastasis (78.57％ vs.56.00％),ORR of bone metastasis (28.57％ vs.16.67％),1-year survival rates (75.00％ vs.52.50％) and 2-years survival rates (42.50％ vs.17.50％) of observation group were significantly higher than control group;the incidence of chemotherapy ADR in observation group was significantly lower than control group (43.75％ vs.70.00％),with statistical significance (P＜0.05).There was no statistical significance in lymph node metastasis DCR,bone tissue metastasis DCR,liver metastasis ORR and DCR,or half year sarvival rate between 2 groups (P＞0.05).CONCLUSIONS:Compared to cisplatin combined with tegafur,gimeracil and oteracil potassium,lobaplatin combined with tegafur,gimeracil and oteracil potassium show better short-term therapeutic efficacy,therapeutic efficacy of lymph node metastasis,bone metastasis and lung metastasis,more than 1-year long-term therapeutic efficacy and safety in the treatment of advanced metastatic breast cancer.

Objective To investigate the effect of acute injury caused by surgery on spatial learning and memory and the underlying mechanism. Methods Ninty-eight healthy SD rats of both sexes weighing 300-350 g were randomly divided into 3 groups: (A) control group received neither anesthesia nor surgery ( n = 14); (B) anesthesia group received intraperitoneal fentanyl 0.2 mg?kg-1 and droperidol 5 mg?kg-1 only ( n = 42) and ( C) splenectomy group received splenectomy under fentanyl and droperidol anesthesia ( n = 42) . Y-maze test was performed to assess the ability of spatial learning and memory in group A and on the 1 st, 3 rd and 7 th day after anesthesia or surgery in group B and C. Seven rats were killed immediately after Y-maze test in group A and on the 1 st, 3 rd and 7 th day after anesthesia (in group B) and surgery (in group C) , and hippocampus was immediately removed for determination of the expression of TNF-? and IL-1? mRNA (RT-PCR) and protein (Western blot). Results The voltage of electric stimulation was significantly higher in group C on the 1st day after surgery than in group B on the 1st day after anesthesia and in group A. The time spent to learn and remember in Y-maze test was significantly longer in group C on the 3 rd than in group B on the 3 rd day and in group A. The expression of TNF-? mRNA and IL-1? mRNA and protein was significantly higher in group C than in group B on the 1st day and in group A.Conclusion Splenectomy can impair the spatial learning ability for a short time after surgery. The increase in the expression of TNF-? mRNA and IL-1? mRNA and protein in hippocampus may play a role in the mechanism.

To determine the effect of CX43 expression on gastric mucosa apoptosis and proliferation under stress conditions, a water immersion-restraint stress(WRS) model was performed with SD rats. Apoptotic cells were quantitated in gastric mucosa by terminal deoxynucleatidyl transferase-mediated dUTP nick and labelling (TUNEL) techniques. Cell proliferation was detected by immunohistochemical staining for proliferating cell nuclear antigen (PCNA). The expression of CX43 mRNA was detected by in situ hybridization. The results revealed that in control rats not exposed to WRS, apoptotic cells were seen only occasionally at the surface epithelium, The PCNA cells occurred in the proliferation zone of the gastric glands. The CX43 mRNA predomination occurred in the zone of the gastric glands. In contrast, the apoptotic quantities rose significantly 2h to 5h after the termination of WRS and reach a peak gradually, while PCNA proteins and the CX43 mRNA decreased significantly. At 8～12h after WRS the apoptotic cells gradually declined, while the PCNA cells increased to reach a peak. The CX43 mRNA almost returned to normal level and then increased to reach a peak. At 24h after WRS, the apoptotic cells remained significantly higher than normal level while the expression of PCNA proteins and CX43 mRNA returned to the values observed in the intact rats.These results suggested the expression of CX43 might associate with cellular differentiation, proliferation and the stabilization of glandular zone and affect the apoptosis of the surface epithelium.

Objective To investigate the effect of antiulcer agents Omeprazole, Misoprostol and Talcid on the gastric mucosa lesion by analyzing the gastric mucosa cell apoptosis and proliferation and CX43 transcriptional expression. Methods Mucosa lesion were evaluated by UI, 32 mice were randomly divided in equal numble into Omprazole (O), Misoprostol (M), Talcid (T), Comparison (C). Apoptosis cells in gastric mucosa were quantitated by terminal deoxynucleatidyl transferase mediared dUTP nick and labelling (TUNEL) techniques, while the expression of PCNA proteins were detected by immunohistochemical staining, CX43 mRNA was detected by In situ hyberdization. at 2h after WRS. Results We found that in comparison with control group, the group of pretreatment with Omeprazole, Misoprostol and Talcid showed a significant reduction in damaged mucosa and epithelial cell apoptosis and increase in the expression of PCNA proteins, and the effect of Omeprazole and Misoprostol was better than Talcid. All three antiulcer agents increased CX43 mRNA expression, the effect of Misoprostol and Talcid was better than Omeprazole. Conclusions Omeprazole, Misoprostol and Talcid can attenuate the multiple gastric mucosa lesion induced by WRS. It may be the ultimate way to prevent and cure stress ulcer by exerting direct cytoprotective effect to improve the cell ability and inhibit stress injury.