A subcellular proteomic method was applied to investigate the protein expression profiles of nasopharyngeal carcinoma (NPC) cell lines,CNE1 and CNE2,at various differentiation levels.Plasma membrane (PM) proteins were obtained by Percoll density grade centrifugation and subjected to twodimensional electrophoresis (2DE) followed by PDQuest software analysis.Nine proteins expressed with more than two folds difference were identified by MALDI-TOF-TOF,of which functions involved in cell differentiation,signal transduction,and metabolism.Half of these proteins,such as galectin-1 and annexin Ⅱ,were analyzed with real-time quantitative PCR or Westem blotting.We have tested a proteomic method to study differentiated NPCs at different levels and found several proteins that might be related to their biological characteristics.

Influenza is a major threat to millions of people worldwide. Vaccines and antiviral agents are two main options available to reduce the impact of the influenza virus, while anti-influenza agents are the most effective means to prevent the transmission of the highly contagious virus and to treat the epidemics of disease. At present, four anti-influenza agents have been approved by the FDA for the treatment of influenza, including two M2 protein ion channel inhibitors-amantadine and rimantadine and two neuraminidase inhibitors-zanamivir and oseltamivir. Arbidol hydrochloride, launched in Russia, is a potent inhibitor of influenza virus, too. Neuraminidase inhibitors could be classified generally by structure into six different kinds: sialic acid derivatives, benzoic acid derivatives, cyclohexene derivatives, cyclopentane derivatives, pyrrolidine derivatives and natural products. In this paper, recent progress in the research of the action mechanisms and structure-activity relationships of these anti-influenza virus agents were reviewed.
Amantadine ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Antiviral Agents ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Cyclopentanes ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Guanidines ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Humans ; Indoles ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Influenza, Human ; drug therapy ; Neuraminidase ; antagonists & inhibitors ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Orthomyxoviridae ; drug effects ; Oseltamivir ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Pyrrolidines ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Rimantadine ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Structure-Activity Relationship ; Viral Matrix Proteins ; antagonists & inhibitors ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use ; Zanamivir ; chemical synthesis ; chemistry ; pharmacology ; therapeutic use

Objective To understand the effect of hyaluronic acid (HA) on the proliferation and apoptosis of chondrocytes cultured in vitro with Kashin-Beck disease(KBD) to provide the experimental evidences for treating KBD diseases with HA. Methods The articular cartilage samples collected from KBD patients were selected according to Diagnosis for Kaschin-Beck Disease(GB 16003-1995). And the normal cartilage samples were collected from victims of incidence (control). Chandrocytes were separated and cultured in vitro. Then varying dosages of HA were administered to chondrocytes and individed into 0,100,500 mg/L group, according to HA doages. The effect of HA on the proliferation and apoptosis of chondrocytes cultured/n vitro both KBD and the controls were investigated by methyl thiazolyl tetrazolium(MTT), Annexin V/PI staining on 2~(nd), 4~(th), 6~(th) day. Results In the control group, 500 mg/L group(0.140 ± 0.049) promoted chondrocyte proliferation significantly than 0 mg/L group (0.116 ± 0.021 ) at the 4~(th) day(P < 0.05), similar phenomenon was observed in KBD group in the 6~(th) day between 500 and 0 mg/L group(0.179 ± 0.081,0.128 ± 0.017, P< 0.05). In the KBD group, compared with 0 mg/L (12.860 ± 2.159), both 100 and 500 mg/L( 10.458 ± 1.143,7.877 ± 1.346) inhibited chondrocyte apoptosis rate (P < 0.05). In control, apoptosis rate of 500 mg/L group(4.045 ± 1.204) descreased compared with 0 mg/L group (7.128 ± 1.244, P < 0.05). Conclusion HA can promote the proliferation and inhibit the apoptosis of KBD chondrocytes cultured in vitro, and 500 mg/L HA play more effective role than that of 100 mg/L in promoting proliferation and inhibiting poptosis.

OBJECTIVETo study the diagnosis, surgical treatment and outcome of craniopharyngioma in 31 children.

METHODSThe clinical data of 31 children (aged 7-14 years) with craniopharyngioma were studied retrospectively.

RESULTSHeadache, visual disorder and growth retardation were main manifestations in the 31 children. The 31 children were definitely diagnosed with craniopharyngioma by CT and MRI. In the 31 cases, 19 (61.3%) underwent total tumor removal, 5 (16.1%) subtotal removal, and 7 (22.6%) partial removal. After tumor removal, transient diabetes insipidus occurred in 19 cases (61.3%) and long-term diabetes insipidus in 3 cases. Six cases (19.4%) presented hypothalamic injuries after surgery. No patient died after surgery. Five patients (16.1%) had recurrent tumor in a mean follow-up of 32.5 months.

CONCLUSIONSThe diagnosis of childhood craniopharyngioma may be based on clinical manifestations and CT/MRI examinations. Craniotomy is a preferred surgical treatment. Proper extent of tumor resection should be determined in order to reduce the tumor recurrence and the incidence of postoperative complications.

Adolescent ; Child ; Craniopharyngioma ; diagnosis ; surgery ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Pituitary Neoplasms ; diagnosis ; surgery ; Tomography, X-Ray Computed

Amine-terminated poly (ethylene glycol) (PEG) was prepared by two steps. Firstly, potassium naphthalene was added to a solution of methoxypolyethylene glycol 5,000 in benzene until the solution maintains green in half of an hour, then excess tosylchloride was introduced; secondly, the conversion of the tosylate into an amine was carried out by Gabriel synthesis. The block copolymer poly (ethylene glycol)-co-poly (gamma-benzyl L-glutamate ) could be obtained by ring-opening polymerization of gamma-benzyl-L-glutamate N-carboxy anhydride with amine-terminated PEG as macroinitiator. And the benzyl group could be removed by sodium hydroxide. The product structure was characterized by IR, 1HNMR, GPC. The cisplatin-loaded micelle was observed by transmission electron microscope (TEM). And the block copolymer is expected to be useful as functional materials including carrier systems in drug controlled delivery applications.
Drug Carriers ; Polyethylene Glycols ; chemical synthesis ; Polyglutamic Acid ; Polymers ; chemical synthesis ; chemistry ; Surface Properties

Objective:To investigate the anticancer activity and mechanism of aconitine on cell proliferation,invasion and migration of hepatoma carcinoma cell(HCC).Methods:The effect of aconitine at different concentrations on proliferation was calculated by MTT assay.The effects of aconitine on invasion and migration of HCC were measured by Transwell and wound healing assay.Western blot was employed to detect the protein levels of P38MAPK signaling pathway-related proteins.Results:The concentrations of 5,10,20 μg/ml were selected according to the results of pre-experiment.Aconitine(10,20 μg/ml) inhibits proliferation and invasion of MHCC97 cells markedly after cells were treated with aconitine for 4 days.Treatment with aconitine down-regulated the ability of migration and decreased the ratio of p-P38/P38 and protein levels of p-MAPKAPK and p-HSP27.Conclusion:Aconitine inhibits prolif-eration,invasion and migration,and the mechanism may related with P38MAPK signaling pathway.

OBJECTIVETo improve the early and late benefits (the patency and total myocardium revascularization) of coronary artery bypass grafting, stimulate us using only bilateral internal mammary artery (BIMA) composite Lima (left internal mammary artery)-Rima (right internal mammary artery) Y graft with off-pump, here is the early evaluation.

METHODSFrom October 2002 to December 2005, 125 patients underwent off-pump coronary artery bypass grafting with the only composite grafts. The bilateral semi-skeletonization internal mammary artery pedicles composed the Y graft, the free Rima was anastomosed to the in situ Lima. The operation was performed off-pump and sequential anastomosis.

RESULTSFour hundred and thirteen grafts for 125 patients, average number of grafts per patient was 3.3. Graft flow was measured with Transit time flowmeter during operation time. All grafts were patent during operation. There was no death perioperative period.

CONCLUSIONOff-pump coronary artery bypass grafting with only bilateral internal mammary artery composite Lima-Rima Y graft is secure and feasible. The technique could achieve total arterial myocardium revascularization and avoiding any procedure on the ascending aorta.

Adult ; Aged ; Cardiovascular Diseases ; surgery ; Coronary Artery Bypass, Off-Pump ; Female ; Follow-Up Studies ; Humans ; Internal Mammary-Coronary Artery Anastomosis ; Male ; Middle Aged ; Treatment Outcome

OBJECTIVE: To summarize the mononostril-septum-transsphenoidal approach for pituitary adenoma. METHODS: The clinical features, operative techniques, and outcome of 36 patients with pituitary adenoma were analyzed retrospectively. RESULTS: Tumors were totally removed in 28 cases, and subtotally resected in 8 patients. No patient died after the operation. Endocrine symptom of 31 patients returned to the normal level, the symptom of the other 5 cases were improved. Thirty patients with visual field defects recovered after the operation. Cerebrospinal fluid leakage occurred in one patient, and was cured with conservative treatment in 2 weeks. CONCLUSION Mononostril-septum-transsphenoidal approach can make use of the natural space of the nasal cavity, which has many advantages, such as direct approach, short operative time, minimal invasion, and few complications. It is a effective transsphenoidal surgical approach.
Adenoma ; surgery ; Adult ; Female ; Humans ; Male ; Middle Aged ; Nasal Septum ; surgery ; Neurosurgical Procedures ; methods ; Pituitary Neoplasms ; surgery ; Sphenoid Sinus ; surgery

Objective To study the correlation between the changes of serum neuron specific enolase (NSE) level and psychological statuses in patients with cerebral concussion.Methods Forty patients with cerebral concussion,admitted to our hospital from January 2012 to December 2012,were chosen in our study as experimental group,and other 40 healthy controls performed physical examination in our Physical Examination Center at the same period were chosen.The serum NSE level in the two groups was determined by enzyme-linked immunosorbent assay (ELISA); Symptom Checklist 90 (SCL-90) scale was performed in 40 patients at different times after injury,and these data were compared with those from the national norm; the correlation between the changes of serum NSE level and SCL-90 scores was analyzed.Results The serum NSE level in the experimental group 1 d after the injury was obviously higher than that in the control group (P＜0.05); 3 and 7 d after the injury,the serum NSE level in the experimental group was close to normal level,which showed no significant differece as compared with that in the control group (P＞0.05).The SCL-90 scores in the experiemtal group 1,3 and 7 d after injury was signficantly higher than that of the national norm (P＜0.05).Positive corelation was noted between serum NSE level and SCL-90 scores 1 and 3 d after injury (r=0.498,P=0.001; r=0.418,P=0.007);however,negative corelation was noted btween the two 7 d after injury (r=0.213,P=0.186).Conclusion Different corelation can be noted between serum NSE level and SCL-90 scores at different time points;combined application of serum NSE level and SCL-90 scores can promote the diagnosis and treatment of patients with brain concussion.

OBJECTIVETo study the relationship between Nanog-promoted metastasis of breast cancer and ezrin(T567) phosphorylation, and explore the possible mechanism by which Nanog regulates ezrin(T567) phosphorylation.

METHODSA siRNA construct targeting Nanog was transfected in breast cancer cells to knock down Nanog expression, and the changes in the cell invasion was detected using Transwell assay. The expression levels of Nanog and PKC and the phosphorylation level of ezrin(T567) were detected using Western blotting and immunofluorescent staining; the protein interaction between PKCε and ezrin was assayed by co-immunoprecipitation and Western blotting.

RESULTSNanog knockdown significantly decreased the expression of PKCε protein, phosphorylation level of ezrin(T567) and the invasion ability of breast cancer cells. PKCε knockdown obviously decreased the phosphorylation level of ezrin(T567) in the cells, and PKCε and ezrin were co-immunoprecipitated.

CONCLUDIONSNanogcan can upregulate the expression of PKCε to promote the phosphorylation of ezrin(T567), which can be a new mechanism by which Nanog promotes tumor metastasis.

Blotting, Western ; Breast Neoplasms ; metabolism ; Cytoskeletal Proteins ; metabolism ; Gene Knockdown Techniques ; Homeodomain Proteins ; metabolism ; Humans ; Nanog Homeobox Protein ; Neoplasm Invasiveness ; Phosphorylation ; Protein Kinase C-epsilon ; metabolism ; RNA, Small Interfering ; Transfection ; Tumor Cells, Cultured ; Up-Regulation