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Adjuvants have been used as critical components of vaccine.They were used to stabilize the antigens and potentiate the immune responses.Dose sparing is also of interests in recent years to be applied in potential pandemic situations or to lower the costs of vaccines.With the emerging nanotechnology in many aspects including the use in biomedical applications,the application of nanomaterials as vaccine adjuvants also attracted a lot of attentions in recent years.With favorable biological properties,such as well-defined and well-formed nanoparticles,biocompatibility,biodegradability and ability to induce humoral immunity and cellular immunity simultaneously,calcium phosphate nanoparticles (CaP) have the potentials to be developed as an immune potentiator to be used as vaccine adjuvants.Here,we reviewed the basic properties of CaP and their applications as vaccine adjuvants with antigens of different modalities such as inactivated virus,protein and naked DNAs.The mechanism of the adjuvanting effects is briefly described.Further the development of CaP as vaccine adjuvants with some designed surface modification could lead to next generation vaccine adjuvants with improved immune potentiating properties and safety profiles.

Objective To observe the efficacy of pregabalin in the treatment of painful diabeticperipheral neuropathy.Methods In a 8-week study,50 patients were randomly assigned into two groups:the therapy group and the control group.The patients in the therapy group were treated with pregabalin 150 mg/d,and the patients in the control group were treated with carbamazepine 200 mg/d.The dose of pregabalin was increased to 300 mg/d till pain was alleviated in the therapy group,and the dose of carbamazepine was increased to 600 mg/d till pain was alleviated in the control group.The therapeutic effect and VAS score in the two groups were observed and evaluated.Results After 1 and 8 weeks' treatment,the therapeutic effect of therapy group were significantly superior to the control group ( At 1 week:U =2.028,P =0.046 ; At 8 week:U =3.540,P ＜0.001 ).After 1 and 8 weeks' treatment,the VAS scores of therapy group were significantly lower than the control group ( At 1 week:5.13 ± 1.76 vs.6.74 ± 1.52,P ＜ 0.05 ; At 8 week:1.13 ± 0.45 vs 3.27 ± 1.04,P ＜ 0.05).There were 5 patients (20％) and 10 patients (40％) had adverse reaction in the therapy and the control groups respectively.Conclusion Pregabalin is effective and safe for the treatment of painful diabetic peripheral neuropathy.

Objective To evaluate the effects of propofol combined with resveratrol on hepatic ischemiareperfusion (I/R) injury in rats.Methods One hundred and eight male Sprague-Dawley rats,aged 6-7 weeks,weighing 220-270 g,were randomly divided into 6 groups (n =18 each):sham operation group (group S) ; I/R group; solvent group (group TW-80) ; propofol group (group P) ; resveratrol group (group R) ; propofol combined with resveratrol group (group P + R).The animals were anesthetized with intraperitoneal 10 ％ chloral hydrate 3.5-4.0 ml/kg.Liver ischemia was produced by clamping the first hepatic portal for 30 min,followed by 12 h reperfusion.In group P,propofol was infused intravenously at 10 mg· kg-1 ·h-1 starting from 10 min before ischemia until the end of operation.In group R,resveratrol 10 mg/kg was injected intravenously at 10 min before ischemia.In group P + R,resveratrol 10 mg/kg was injected intravenously and then propofol was infused intravenously at 10 mg· kg-1· h-1 starting from 10 min before ischemia until the end of operation.The equal volume of normal saline was given instead in groups S and I/R,and the equal volume of TW-80 was given instead in group TW-80.Six rats in each group were chosen at 3,6 and 12 h of reperfusion and blood samples were taken from the superior and inferior vena cava for measurement of serum alanine aminotransferase (ALT) and aspartate amino transferase (AST) activities.The rats were then sacrificed and livers were removed for microscopic examination and for determination of superoxide dismutase (SOD) and myeloperoxidase (MPO) activities,inducible nitric oxide synthase (iNOS) expression,and malondialdehyde (MDA) and nitric oxide (NO) contents in liver tissues.Results Compared with group S,the serum ALT and AST activities,and MDA and NO contents,MPO activity and iNOS expression in liver tissues were significantly increased,and the activities of SOD were decreased in the other four groups (P ＜0.05).Compared with group I/R,the serum ALT and AST activities,and MDA and NO contents,MPO activity and iNOS expression in liver tissues were significantly decreased,and the activities of SOD were increased in groups P,R and P + R (P ＜ 0.05).Compared with groups P and R,SOD activity was significantly increased,and the other parameters were decreased in group P + R (P ＜ 0.05).The pathological changes were significantly attenuated in groups P,R and P + R compared with group I/R.Conclusion Pretreatment with propofol and resveratrol can attenuate hepatic I/R injury in rats by increasing antioxidation and inhibiting lipid peroxidation and reducing production of endogenous NO,and the combination of the two agents provides better efficacy than etheir alone.

BACKGROUND: Our previous studies have demonstrated that cryopreserved bone marrow stromal cells (BMSCs) still maintain high survival rate, cell proliferation and osteogenic differentiation potentials after thawing. However, this result needs confirmed in vivo environment. OBJECTIVE: To explore the effects of cryopreserved BMSCs and collagenic membrane BME-10X complex on type Ⅰ collagen synthesis in vivo. METHODS: Beagle dog BMSCs were cultured in vitro and cryopreserved for 12 months, which were thawed and prepared complexes with collagenic membrane. The complexes were cultured with mineralization induction medium or normal medium for 5 days, followed by implanting into nude mice. The specimens were harvested and analyzed by gross observation, histopathological and immunohistochemistry at 4 weeks after implantation. The collagenic membrane cultured with mineralization induction medium served as controls. RESULTS AND CONCLUSION: In the control group, the boundary of collagenic membrane was distinctly, without cell growth around boundary or intra collagenic membrane, additionally, there was little type Ⅰ collagen. In the non-induction group, cells grew into collagenic membrane, trabes-like collagen formed, and type Ⅰ collagen distribution increased at 4 weeks. In the induction group, scaffold degraded, more cells grew, and plenty of collagen formed osteoid-like tissues. The distribution of typeⅠcollagen was obviously increased than that of other groups. The findings demonstrated that cryopreserved BMSCs possess strong osteogenic differentiation potentials after proliferation and induction combined with collagenic membranes in vitro.

Glioma is the most common intracranial malignant tumor,with high incidence and recurrence rate,high fatality rate and the characteristics of low cure rate.Current treatment is given priority to with surgical treatment,auxiliary comprehensive therapy such as radiotherapy and chemotherapy.Hydrogen peroxide (H2O2) is a intermediate product of the cell oxygen metabolism which is a universal phenomenon in aerobic organisms.H2O2 is indispensable at various stages of tumor cell proliferation,infiltration and metastasis.Studies of the production of H2O2 and its function,the mechanism of apoptosis and the relationship between H2O2 and glioma cells can provide corresponding guidances for looking for a target gene for the treatment of gliomas.

Objective To clone and express the new gene R049 of uropathogenic Escherichia coli 132.and to investigate the immunopmtective effects of the R049 recombinant protein on mice.Methods The pmkaryotic expression system of gene R049 was constructed by directed cloning.Thereafter,the R049 recombinant protein Was expressed and purified by Ni affinity chromatography.Polyclonal antibody was pre-pared by immunizing BALB/c mice with R049 recombinant protein.The R049 recombinant protein and whole bacterial proteins of UPEC132 were analyzed by SDS-PAGE and Western blot.BALB/c mice were im-munized with R049 recombinant protein before challenged by UPECl32 through urinary tract.Then the differences of urine and renal colony counts between immunization group and control group were compared.Results The recombinant strain E coli BL21(DE3)/pET32a-R049 ORF was constructed successfully,and the relative molecular mass of the R049 recombinant protein was 66.9×103 and its purity was up to 95% af-ter purification.The titer of polyclonal antibody wag≥1:102 400 analyzed by indirect ELISA.Both of the R049 recombinant protein and whole bacterial proteins of UPECl 32 were confirmed to show specffic reactions on the antiserunl throughh Western blot.The animal experiments showed the urine and renal colony counts of immunization group were significantly lower than that of the control group(P<0.01,P<0.05).Conclu-sion The new gene R049 of uropathogenic E.coli 132 had immunopmtective effects on mice and the defini-tive mechanism would be needed to further study.

BACKGROUND: The biological functions of platelet-rich plasma (PRP) are affected by multiple factors, such as individual difference, PRP concentration, PRP carder, PRP-activated methods and so on. OBJECTIVE: To evaluate the effect of PRP, activated by different concentrations of thrombin, on the repair of cranial defects. METHODS: Whole blood of the central artery of rabbit ears was extracted to prepare PRP, which was then diluted so that the final platetet count was about 5 times of the whole blood. Four whole-thickness layer of cranial defects at an 8-mm diameter were created in 16 New Zealand rabbits and randomly grafted with β-tdcalcium phosphate (β-TCP) and PRP, activated by 60 U/mL. thrombin; β-TCP and PRP, activated by 1 000 U/mL thrombin; β-TCP and PRP; β-TCP alone. At 1 and 3 months following implantation, X-ray analysis and microscopic observation were performed to onserve cranial repair, the area percent of new bone formation was calculated. RESULTS AND CONCLUSION: At one month post-surgery, the edge of defects was clear in each group, with varying degrees of new bone formation surrounding the defects, β-TCP particles partially degraded and the degradation lesion was replaced by new bone, only a small amount of bone lacunae was seen, fiber wrapped around the defect center β-TCP, only a small number of specimens showed new bone formation; X-ray showed a clear boundary and uniform defect density; the percentage of new bone formation in the PRP groups were higher than β-TCP groups (P < 0.05). However, there was no significant difference between PRP group groups (P > 0.05). At 3 months post-surgery, the defect boundary was unclear in each group, the new bone formation increased, the β-TCP particles surrounding defects partially or all degraded and were replaced by new bones, some regions appeared trabecular bone, bone lacuna in new bone was increased, the central defect of the majority of specimens exhibited new bone formation; X-ray showed defect boundary was unclear in each group, defect surrounding density was higher than the center defect, and bone mineral density was equivalent to other normal parts; the percentage of new bone formation in the PRP groups was significantly higher than that in the β-TCP groups (P < 0.05), PRP +β-TCP group was higher than the other 3 groups (P <0.05), there was no significant difference between two thrombin groups (P > 0.05). It is indicated that although PRP improves the repair of cranial defects, 60 and 1 000 U/mL of thrombin has no effects on PRP rapairing cranial defects in New Zealand white rabbits, compared with PRP+β-TCP group, possible the absence of the optimal concentration of thrombin.

Acute Disease ; Adolescent ; Adult ; Aged ; Child ; Female ; HLA-G Antigens ; metabolism ; Humans ; Interleukin-10 ; metabolism ; Leukemia ; metabolism ; Male ; Middle Aged ; Young Adult

Objective To analyze the feeling of nursing undergraduates after one semester of earlyclinical placement.Methods School of Nursing at Soochow University initiated Early Clinical PlacementI for the undergraduates recruited from poverty-stricken areas in 2013.Results Each student hadgained a profound understanding of nursing.Conclusions Early clinical placement is helpful for under-graduate to cultivate interest towards nursing and broaden thinking.