Objective To improve the diagnostic level of uncommon hepatic malignancy in 5 cases with different histopathological nature by analyzing their CT features. Methods CT scan was performed in 5 cases with pathologically proved uncommon malignancy of the liver including hepatic sarcoma ( n =3) and primary carcinoid tumor ( n =2). Results These uncommon malignancies of the liver had a variety of presentations. Undifferentiated embryonal sarcoma presented as a single huge cyst mixing with solid mass. Hepatic angiosarcoma demonstrated as multiple well defined hypoattenuation lesions without cirrhosis. Necrosis, cystic degeneration, and hemorrhage may be accompanied. Malignant fibrous histiocytoma displayed as a single large hypoattenuation lesion within hyperdense septations, and most of the tumor was in the right lobe. Immunohistochemistry had the diagnostic value. The CT features of carcinoid tumor were single or multiple, unilocular or multilocular mixed dense masses. The solid portion of the masses enhanced obviously and carcinoid syndrome may highly suggest the diagnosis. Conclusion The forementioned 5 cases of hepatic malignancy are seldomly seen clinically. Each of them with different pathologic nature has different CT findings, and sometimes with some similar signs. Typical CT findings, coupled with clinical information may lead to a correct diagnosis.

Objective To design and synthesize targeting nuclear factor-?B (NF-?B) decoy-oligodeoxynucleotides (ODNs) and measure their anti-inflammatory actions. Methods Peritoneal macrophages ? (pM?) cells extracted from rats were randomly divided into normal control group, lipopolysaccharides (LPS)-stimulated group (Group A), decoy-ODNs treated group (Group B), non-decoy-ODNstreated group (Group C) and cationic liposome treated group (Group D). Supernatants and cells in the control group and the Group A were collected 1,2,6,12,18 and 24 hours after LPS stimulation. By using cationic liposomes in a ratio of 4:1 in quantity, pM? cells were transfected by decoy-ODNs at concentrations of 2 mg/L,4 mg/L and 8 mg/L respectively and stimulated with LPS 6 hours later. Then, supernatants and cells were collected 8, 12 and 18 hours after transfection. The expression changes and the distribution of p65 were analyzed by immunocytohistochemical method, the protein expressions of tumor necrosis factor ? (TNF?), interleukin-6 (IL-6) and interleukin-10 (IL-10) in the supernatants by enzyme-linked immunosorbent assay (ELISA) and mRNA transcriptions of TNF?,IL-6 and IL-10 by reverse transcriptase polymerase chain reaction (RT-PCR). Results Decoy-ODNs at concentration of 4 mg/L and 8 mg/L could markedly inhibit the expression and transcription of TNF? and IL-6 of pM? cells in a dose-dependent fashion but had a weak inhibitive effect on the expression and transcription of IL-10. Conclusions The targeting NF-?B Decoy-ODNs can suppress the expressions of inflammatory mediators in pM? cells.

Objective To investigate the effect of propofol pretreatment on hippocampal monocyte chemotactic protein-1 ( MCP-1 ) and CC-chemokine receptor type 2 (CCR2) expression following forebrain ischemiarepcrfusion (I/R) in rats. Methods Twenty-four male SD rats weighing 250-300 g were randomly divided into 3 groups ( n = 8 each): group Ⅰ control; group Ⅱ I/R and group Ⅲ propofol pretreatment. Cerebral I/R was induced by clamping bilateral common carotid arteries for 10 min combined with hypotension ( MAP was maintained at 35-45 mm Hg) induced by exsanguinations in group Ⅱ and Ⅲ. In group Ⅲ propofol 50 mg/kg was injected into femoral vein immediately before cerebral ischemia. The animals were sacrificed at 6 h of reperfusion. Hippocampal tissue was obtained for detection of MCP-1 mRNA and CCR2 mRNA and their protein expression by RT-PCR and Western blot technique. Results I/R significantly increased the expression of MCP-1 and CCR2 in hippoeampal tissue as compared with control group. Propofol pretreatment significantly attenuated cerebral I/R induced increase in MCP-1 and CCR2 expression. Conclusion Propofol pretreatment can significantly inhibit forebrain I/R-induced hippocampal MCP-1 and CCP2 expression.

Objective To establish multi-drug resistant bladder (MDR) tumor T24 cell lines and to assess their resistant characteristics.To observe effect of genistein on doxorubicin (ADM) resistant cell lines T24/ADM.Methods Bladder tumor T24 cell line was exposed to ADM in the culture medium for the establishment of drug resistant cell lines:concentrations of ADM was stepwise increased for long exposure.Morphologic studies were performed with optical microscopy.Drug sensitivities were determined by MTT.Results Six months were taken to establish drug resistant cell lines T24/ADM.No obvious morphologic changes were observed between resistant and parental cell. But drug resistances to ADM, 5-Fu,cyclophosphamide and cisplatin were increased,and resistance index were 15.79,4.68,5.53 and 3.81,respectively.Among all groups,there were significant differences.After genistein was used to T24/ADM cells,the IC50 value of genistein was 40 μg/ml.The proliferation cells were induced by genistein at the concentration of 20-100 μg/ml. Conclusion Genistein can inhibit human urinary bladder cancer T24/ADM cell proliferation at some concentration.

Objective To study the molecular pathway of osteoblastic differentiation induced by substance P (SP), a neurotransmitter. Methods Mesenchymal stem cells were isolated and cultured, and treated with SP or its receptor (NK1) antagonist to induce osteoblastic cell differentiation, respectively. Alkaline phosphatase activity was determined; Osterix gene expression was detected by RT-PCR after 1-2 weeks for three times. The data of each culture condition were analyzed using SPSS12.0 statistical software to determine whether the differences between conditions were significant. Results After 4-5 days' culture, bone marrow stromal cells became spindle-shaped, triangular or polygonic. They covered the plate surface, formed extensive cell sheets in each group after 11-12 days of culture, and then induced differentiation to osteoblast. SP up-regulated the important transcription factor Osterix gene expression significantly (P<0.05). Conclusion The up-regulation of Osterix gene expression by SP may stimulate osteoblastic cell differentiation. SP's regulation depends on its receptor NK1.

AIM: To observe the expression of corticotropin releasing hormone (CRH) within the paraventricular nucleus of hypothalamus (PVN) and to explore the relationship between the activated CRH-containing neurons and sympathetic activity in rats with heart failure (HF).METHODS: Healthy male Sprague-Dawley (SD) rats were subjected to coronary artery ligation to induce HF, and chronic intracerebroventricular (ICV) infusion was performed by osmotic pump for 4 weeks.The rats in sham group and HF group were given vehicle (VEH;artificial cerebrospinal fluid 0.25 μL/h).The rats in HF plus treatment group were treated with CRH competitive inhibitor αh-CRH (15 mg/h).Meanwhile, the Lewis rats and Fischer 344 rats for control study also underwent coronary ligation to induce HF or sham surgery.After 4 weeks, left ventricular end-diastolic pressure (LVEDP) and maximum positive/negative change in pressure over time (±dp/dtmax) were determined.The right ventricular-to-body weight (RV/BW) and lung-to-body weight (lung/BW) ratios were calculated.The renal sympathetic nerve activity (RSNA) was recorded and the plasma norepinephrine (NE) level was measured.The expression of CRH in the PVN combined with the plasma adrenocorticotrophic hormone (ACTH) levels were measured.RESULTS: Compared with the sham-SD rats, the HF-SD rats had a greater number of CRH positive neurons in the PVN (accordingly the plasma ACTH levels were increased), accompanied by decreased ±dp/dtmax and increased RSNA, plasma NE, LVEDP, lung/BW and RV/BW.However, ICV treatment with αh-CRH attenuated these changes in the HF-SD rats (P<0.05).Compared with the sham-Fisher 344 rats, the HF-Fisher 344 rats also had a greater number of CRH positive neurons in the PVN (accordingly the plasma ACTH levels were increased).In addition, they had significantly increased RSNA and plasma NE level, higher LVEDP, RV/BW and lung/BW, and lower ±dp/dtmax (P<0.05).Compared with the SHAM-Lewis rats, the HF-Lewis rats had not significantly changed in the above parameters.CONCLUSION: In CHF, the CRH-containing neurons in PVN are activated, thus aggravating cardiac function by increasing sympathoexcitation.

Objective: To explore correlation between QRS complex duration and left ventricular ejection fraction (LVEF) in patients with complete left bundle branch block (CLBBB).Methods: A total of 213 patients, who were diagnosed as left bundle branch block by ECG in our hospital from Feb 2012 to Jun 2013, were selected.According to QRS complex duration, patients were divided into CLBBB group (n=182) and incomplete left bundle branch block (ICLBBB) group (n=31).Linear correlation analysis was used to analyze the correlation between QRS complex duration and LVEF, and receiver operating characteristic curve (ROC) was used to analyze optimal cutoff point of QRS complex duration for predicting LVEF<50%.Results: Compared with ICLBBB group, there was significant rise in QRS complex duration [(104.61±8.85) ms vs.(149.36±17.25) ms] and significant reduction in LVEF [(54.26±4.96)% vs.(45.22±12.57)%] in CLBBB group, P<0.01 both.Linear correlation analysis indicated that QRS complex duration was significant inversely correlated with LVEF (r=-0.55, P=0.001) in CLBBB patients.ROC analysis indicated that optimal cutoff point of QRS complex duration for predicting LVEF<50% was 151ms, the area under the curve was 0.79 (P=0.001),its sensitivity was 68.1% and specificity was 83.5%.Conclusion: QRS complex duration is significant inversely correlated with LVEF in CLBBB patients, which can be used as a simple index predicting reduced LVEF.

ObjectiveTo explore the effect of Chinese Daoyingong method on knee osteoarthritis.Methods Eighty patients with knee osteoarthritis were randomly divided into the experiment group and control group in equal number.The control group was given the routine medicine combined with Chinese fumigation and the experiment group was treated with Chinese Daoyin method beside the treatment in the control group.The two groups were compared in terms of the score on visual analog scale of pain and the score on knee function before and after treatment.Results The visual analog scale of pain in the experiment group was significantly lower than that in the control group after intervention and the score on knee function was significantly higher than that of control group (P<0.001). Conclusion The intervention with Chinese Daoyingong method plus routine medication and Chinese herbal fumigation is effective in the treatment of knee osteoarthritis.

To evaluate the value of the vaccinations with 3 strains of gene-deleted mutants from pseudorabies virus(PRV), PRV TK-, PRV gE-/gI- and PRV TK-/gE-/gI- after to exposure to the wild Fa strain, these mutant strains from the PVR reference isolate Fa were used to vaccinate 4 weeks old PRV-free pigs with a dosage of 105 PFU each ,and followed by nasally challenged by the parental Fa strain with a dosage of 107 PFU at 14 days post vaccination. The pathological changes, virus discharge and distribution were evaluated after vaccination and challenge. It was found that the histopathological observations in the 10 collected samples including cerebrum, cerebellum, heart, liver, lungs, spleen, kidneys, tonsils, lymph nodes and trigeminal ganglion from these 3 mutant strains showed that the rates of occurrence of pathological changes in various organs were 4/10, 3/10 and 4/10 respectively, whereas that of the positive controls were 9/10. The damage in lungs was more serious in pigs vaccinated with PRV TK-mutant and positive control in comparison with other groups of pigs inoculated, and the damages in cerebrum, cerebellum and trigeminal ganglion in positive controls were more serious than those of pigs vaccinated with the 3 gene-deleted mutants. However, the tonsils, the main organ for latent infection were damaged mildly in the pigs inoculated with these 3 gene-deleted mutants in comparison with that of the positive controls. As demonstrated by Southern blot analysis, all the vaccinated pigs could discharge viruses by secretion through nasal cavity, but the soldier pigs were not infected successively by the gene-deleted mutants and the gene-deleted mutants were also unable to establish infection in cerebrum and cerebellum. Nevertheless, they could not effectively block discharge of PRV Fa after exposure to Fa virus, but could block effectively the virulent Fa virus invading into cerebrum and cerebellum. From these observation, it is evident that the deleted mutants of the TK, gE/gI , TK/gE/gI genes can block the invasion of virulent Fa virus into cerebrum and cerebellum and lessen the damages on multiple organs or tissues ,indicating that the deleted mutant of TK/gE/gI gene may be the most promising candidate of vaccine strain for development of the commercial vaccine.

Objective To establish a mouse model of acute graft-versus-host disease (aGVHD) after allogeneic bone marrow transplantation,and using exogenous interleukin-7 receptor alpha (IL-7Rα) intervene mice aGVHD and analyse its possible mechanism.Methods The BALB/C (H-2d) female mice as recipients were grouped by rat: the irradiation group (group A),irradiation transplantation group (group B) and IL-7Rα in the intervention group (group C),each 10.ALL mice were accepted 9 Gy60Co total body irradiation.1×107 bone marrow cells and 2×107 spleen cells of donor C57BL/6 (H-2b) via the tail vein were infused to recipient mice.The signs of the recipient mice,hematopoietic functional recovery and survival time of change,and pathology,chimerism and cytokine levels in checkwere observed.Results Mice in A group after irradiation were gradually death,in group B and group C mice after transplantation had typical aGVHD symptoms,but lighter signs and a longer survival time of Group C than in group B.WBC count in Group C was +14 d (4.53± 0.21) ×109/L,+21 d (3.63±0.06) ×109/L,+28 d (4.31±0.04) ×109/L,was hematopoietic recovery compared with Group B [+14 d (1.81±0.05) ×109/L,+21 d (1.32±0.04) ×109/L,+28 d (1.76±0.04) ×109/L],the difference was statistically significant (t =0.237,0.108,0.359,P ＜ 0.05).The pathological results of liver,spleen,skin histopathology in group C were better than group B.Chimera implants,plasma IL-7 levels after transplant +7 d,concentration was significantly increased.IL-7 concentration in group C was +14 d (194.32±1.02) pg/ml,+21 d (131.63±1.54) pg/ml and in group B was +14 d (330.24±8.08) pg/ml,+21 d (184.09±2.05) pg/ml,the difference was statistically significant (t =1.590,1.285,P ＜0.05).Conclusion The stable aGVHD mouse model was established.In aGVHD early,plasma IL-7 levels were significantly increased.Exogenous IL-7Rαcan reduce the plasma IL-7 levels,thereby reducing the incidence of aGVHD after allogeneic bone marrow transplantation.