Objective To study immunological property of chimeric BPVL1 / HPV16 E7 virus-like particles (VLPs) in mice. Methods HPV16 E7 gene was cut into three fragments, ligated to BPVL1 sequence, respectively, and then expressed as chimeric VLPs. The ability of the chimeric VLPs to stimulate in vivo cytotoxic response was analysed with lymphocytes taken from mice C57BL/6J lymph nodes. Results A strong CTL response against C-2 cells (HPV16 E7 aa47-59 transfected EL-4 cell) was induced in mice immunised with chimeric VLPs BPVL1 / HPV16 E7(b). Furthermore, no CTL response was detected against EL-4 cells in immunized mice. Conclusions Chimeric BPVL1/HPV16 E7 VLPs, serving as antigens, can activate mouse T lymphocytes and elicit a strong antigen-specific CTL response. Chimeric BPVL1/HPV16 E7 VLPs could be used as an efficient antigen delivery system, and might provide a novel strategy for HPV16 vaccine design.

ObjectiveTo study possible mechanism through investigating the pathological and ultrastructural characters of secondary injury to perihematoma in intracerebral haemorrhage (ICH) rats.MethodsSprague Dawley male rats were subjected to ICH models. They were randomly divided into test group and control group. The rats in the test group were divided into 7 subgroups at 1h,3h,12h,24h,48h,72h and 7d after ICH; while those in control group were divided into 3 subgroups at 3h,24h,72h after saline injection. Each subgroup contained 5 rats. 2 rats from each group were stained by 2% triphenyltetrazolium chloride(TTC) to observe the pathological change.3 rats were picked up from each group to do optical microscope and electric microscope investigation on perihematoma tissue and ipsilateral cortex.ResultsHematoma tissue was demonstrated as black brown by TTC staining, no white infarcted area was detected around hematoma. In addition, there was a transitional zone between hematoma and normal tissue under microscopy; the involved tissue looked loose with varied edematous cells. Astrocytes appeared swollen and neural cells looked degenerated and necrosis. Meanwhile, capillary hyperplasia around hematoma with foot plate swollen were detected, no remarkable neural cells change was observed. 24 h after blood injection, astrocytes started to swell, part of them became degenerated and necrosis. Neural cells appeared mild degenerated and blood brain barrier were destroyed. 72 h after ICH, astrocytes showed highly swollen with neural cells degenerated.ConclusionSecondary injury to perihematoma has been identified and the pathological and ultrastructural changes have been observed.

Objective We analyzed the curative effect of ERCC1 and RRM1 expression on the Neo-adjuvant Chemotherapy of stage Ⅲ NSCLC to investigate the guiding function of ERCC1 and RRM1 expression in chemotherapy regimen containing platinum.Methods Branch DNA-liquid phase chip methods were used to detect ERCC1 and RRM1 expressions before chemotherapy in 80 cases of stage Ⅲ NSCLC confirmed by pathology.All patients received 2 periods Neo-adjuvant Chemotherapy with GP regimen.According to WHO efficacy appraisal standard,the Enhanced Scan of CT showing reaching complete remission or partial remission was effective or stable,otherwise the progression was considered ineffective.Results For the 80 cases of stage Ⅲ NSCLC,the treatment for 20 of the 25 patients with low expressions of both ERCC1 and RRM1 were effective with an effective rate of 80.0％;The treatment for 14 of the 23 patients with low expressed ERCC1 and high expressed RRM1 were effective with an effective rate of 60.9％;The treatment for 10 of the 20 patients with high expressed ERCC1 and low expressed RRM1 were effective with an effective rate of 50.0％;and the treatment for 4 of the 12 patients with both high expression were effective with an effective rate of 33.3％.The difference of effective rates among the four groups had statistical significance ( x2=7.81,P＜0.05 ) with group A having significantly higher rate than the other three groups and group B and group C having significantly higher rate than group D ( P＜0.05 ).Conclusion ERCC1 detection has guiding significance on the regimen selection of NSCLC Neo-adjuvant Chemotherapy.It was worthwhile to use ERCC1 detection widely in the individualized treatment of the stage Ⅲ NSCLC before surgery.

sis were given.

BACKGROUND: As a bone graft, coralline hydroxyapatite (CHA) has uniform and interacted pore structure, which is suitable for vascular regeneration, bone regeneration and bone deposition. It displays good biocompatibility and no immunogenicity. OBJECTIVE: To explore the clinical results of CHA in the treatment of benign osteolytic bone defects. DESIGN, TIME AND SETTING: A retrospective analysis was performed in the Department of Orthopaedics, Affiliated Hospital of Hainan Medical College from May 1996 to May 2007. PARTICIPANTS: A total of 32 cases of benign osteolytic bone defects were enrolled from Department of Orthopaedics, Affiliated Hospital of Hainan Medical College. Pathological diagnosis showed that the cause of bone defect included bone cyst for 8 cases, fibrous hyperplasia of bone for 9 cases, aneurysmal bone cyst for 4 cases, osteoenchondroma for 1 case; fracture complication for 5 cases consisting of femoral complete fracture for 2 cases and humeral complete fracture for 1 case, and humeral incomplete fracture for 2 cases. CHA was prepared by the Biomaterials Laboratory of Hainan Medical College. METHODS: According to routine approach of the operation, 32 cases of benign osteolytic bone defects were implant with CHA granules, chips or blocks after deleting tumor tissue and thinning cortical bone. Then the periosteum was sutured. Three cases with complete fracture received internal fixation, while other cases were untreated. None was fixed with plaster for external fixation. MAIN OUTCOME MEASURES: The X-ray films were observed to evaluate the bone healing at different time. RESULTS: All cases were followed up for average 6-24 months. No general abnormal reactions were found. The incisions were healed in two weeks. The lesion range of bone defect was from 3 cm?2 cm?2 cm to 12 cm?4 cm?4 cm before operation; At 1-3 months after operation, bone graft began to fuse with bone tissue around defects and fused completely at 3-6 months, which indicated the bone defect was almost repaired; At 6-24 months, bone graft was moulded and rebuilt, gradually substituted by newly formed born. CONCLUSION: The CHA is an idea bone graft substitute material for its good results in the treatment of benign osteolytic bone defects, shorter operating time and fewer complications.

Adolescent ; Child ; Child, Preschool ; Humans ; Infant ; Infant, Newborn ; Rickets ; prevention & control ; Vitamin D ; therapeutic use

Annexin A3 ; genetics ; metabolism ; Cells, Cultured ; Guanine Nucleotide Dissociation Inhibitors ; genetics ; metabolism ; Hepatocytes ; drug effects ; metabolism ; Humans ; Lactoylglutathione Lyase ; genetics ; metabolism ; RNA, Messenger ; genetics ; Trichloroethylene ; toxicity ; rho-Specific Guanine Nucleotide Dissociation Inhibitors

Mutagenicity Tests ; methods ; Tobacco Smoke Pollution ; adverse effects

0.05). Accessory pathway antegrade and retrograde effective refractory period values were shorter in patients with PAF attacks (P

Biotechnology supremacy is a newly-advanced power theory. It is a superior dominance of military biotechnological application based on the microcosm of life structure within a certain period of time. The advancement of biotechnology supremacy and modern biotechnology has created the concept of bio-micro-frontier, which involves information and defense resources of all living ultra-micro-organisms with national and regional characteristics. Being feasible both in theory and practice, the implementation of bio-micro-frontier system is strategically important. This article explores the implementation of bio-micro-frontier in terms of strategy and tactics, which will add a unique dimension to future military transformation and active defense.