Objective To explore the pathogenesis of pulmonary fibrosis in mice with acute paraquat (PQ) poisoning.Methods The C57BL mice aged 8 weeks,treated with paraquat (5 mg/ml) at 20 mg/kg,through intraperitoneal injection for 3 consecutive days. The changes of behavior were observed and recorded everyday and the rats were sacrificed on day 1,3,7 respectively after administration. The histopathological,immunochemical examination and count of cells with expressions of MMP-2 and MMP-9 in lung tissues were conducted. Results Compared with the control group,the mice with acute paraquat poisoning appeared dyskinesia,trembling,piloerection,less activity to a certain extent on the third day. Hemorrhage,fibroplasia and stroma thickening in part of the lung were found on 7th day. The expression of MMP-2 and MMP-9 in group of PQ poisoning was significantly up-regulated (P

With the development of radiologic intervention, the treatments of aortic dissection are getting more and more diversified. In recent years, Debakey Ill and Debakey I aortic dissection has been usually treated with endovascular graft exclusion, or combined surgical and endovascular treatment. It is therefore more important to evaluate the aorta and its complications after interventional treatments. Because multidetector-row computed tomography (MDCT) has advantages, such as short examination time, high spatial resolution, and simple operation, this modality has become a first choice of non-invasive methods for the follow-up of aortic diseases after the intervention. Now the MDCT presentations and their anatomic-pathologic features of aortic dissection after endovascular graft exclusion or combined surgical and endovascular treatment are reviewed in this article.
Aneurysm, Dissecting ; surgery ; Aortic Aneurysm ; pathology ; Blood Vessel Prosthesis Implantation ; Humans ; Multidetector Computed Tomography ; Stents

Objective To investigate the values of combined determination of pleural effusion and serum carcinoembryonic antigen (CEA), cytokeratin 19 fragment (CYFRA21-1), neuron-specific enolase (NSE), and squamous cell carcinoma antigen (SCC-Ag) in diagnosis of lung cancer. Methods 101 patients with pleural effusion were reviewed retrospectively. Expressions of CEA, CYFRA21-1, NSE and SCC-Ag in pleural fluid and serum were detected; the optimum cut-off points resulting from the best sensitivity-specificity balance in the receiver operator characteristic (ROC) curves were constructed. The expressions of the tumor markers were compared among different pathological types of lung cancer. Results The levels of tumor markers in both pleural effusion and serum were significantly higher in patients with lung cancer than the benign group (P < 0.05). The expression levels and positive rate of CEA for lung adenocarcinoma, NSE for small cell lung cancer, and CYFRA21-1and SCC-Ag for pulmonary squamous cell carcinoma were higher than any other single detection (P < 0.05). Combined detection of the tumor markers in pleural fluid and serum improved the detection rate of lung cancer. Conclusions Combined detection of pleural effusion and serum tumor markers has important reference value in the detection of lung cancer and in pathological typing.

The roles of shear rate, shear time, red blood cell (RBC) concentration and RBC rigidity in the spontaneous platelet aggregation of whole blood at uniform flow field were studied. A new rigid RBC model was established by heating and assessed by studies of hemorheology, RBC electrophoresis, and RBC aggregation. In uniform flow field formed with cone-plate viscometer, both of the effect of shear rate and shear time on the spontaneous platelet aggregation rate (SPAR) were appeared in the bidirectional patterns. At low shear rate, SPAR increased with the prolongation of shear time, but at hight shear rate the time prolongation decreaed SPAR. Similiarly, SPAR was positively related to the shear rate at early shearing, with the increasing of shear time, the relationship of SPAR with shear rate changed from positive to negtive. When the shear rate at 46 s~(-1) or the shear time at 20 minutes, SPAR was unaffected by shear time or shear rate, respectively. With increase of RBC concentration, SPAR increased correspondingly (r=0.8235, P

Objective: To investigate the efficacy of scalp acupuncture in combination with body acupuncture for treating pseudobulbar paralysis. Methods: Eighty patients were randomly divided into treatment and control groups, 40 cases each. The control group was treated by the routine method of Western medicine and the treatment group by combined scalp and body acupuncture on the basis of the former. The curative effect was evaluated after treatment in both groups. The influence of the treatment on mean blood velocity(MBV) in anterior, middle and posterior cerebral arteries was observed by transcranial Doppler(TCD) in both groups. Results: The total efficacy rate was 97.5% in the treatment group and 12.5% in the control group. The recovery rate was 75% in the treatment group and 0% in the control group. There was a significant difference between the two groups(P＜ 0. 01). TCD showed that blood velocity in cerebral arteries was significantly increased and the unbalanced stasis of the right and left cerebral blood flow changed in the treatment group. A comparison of MBV between pretreatment and posttreatment showed P ＜ 0.01. Conclusion: Scalp acupuncture in combination with body acupuncture has a good effect on pseudobulbar paralysis.

Objective To study the catalytic capability of glucosamirie-Cu( Ⅱ) complex for decomposition of H2O2 and its relative factors. Methods Glucosamine-Cu( Ⅱ ) complex was prepared by the reaction of D-glucosamine hydrochloride with Cu2+ in aqueous solution, then added it into H2O2 solution. The concentration of H2O2 was determined by titrimetric analysis in a regular interval of time, the rate of decomposition of H2O2 was obtained in various conditions. Results Strong catalytic capability of glucosamine-Cu( Ⅱ ) complex was obtained at 30℃ pH 6. 5, the rate of decomposition was over 90% after 12h, and was almost 100% after 24h. Conclusion The complex of glucosamine-Cu( Ⅱ ) showed good catalytic capability for decomposition of H2O2.

Objective To investigate the protective effects of green tea polyphenols(GTPs)on dopamine neuron loss in substantia nigra concomitant with a depletion of dopamine in corpus striatum induced by the N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)in mice as a model of Parkinson disease.Methods Male C57BL/6 mice were intraperitoneally injected with saline + saline(group A),saline + GTPs(group B),saline+MPTP(group C)and GTP+MPTP(group D)at 2-hour intervals for a total of 3 doses for MPTP and 5 doses for GTPs(10 or 50 mg/kg delivered).The animals were sacrificed 7 d after the last injection.Levels of dopamine and its metabolites in the corpus striatum were measured with high-performance liquid chromatography with an electrochemical detector(HPLC-ECD).Results Level of dopamine and its metabolites in the corpus striatum in group C decreased significantly compared with group A or B;however,those in group D(both 10 and 50 mg/kg)prevented these effects.Conclusion GTPs can protect the dopamine neurons from loss in MPTP-induced mice.

Osteopontin is a part of cell wall, which plays an important role in adherence, migration of cell, repair of tissue. Nearly studies suggest that there are relationship between osteopontin and arthritis.

Objective To find out the material base of the induction and aggravation of psoriasis by psycological factors such as stress and depression etc. Methods Radioimmunoassay (RIA) was used to determine the effect of sera from 49 psoriatic patients and 34 healthy controls on the suppression of the lymphocyte transformation of normal mouse lymphocytes. Results The lymphocyte transformation rate of mouse lymphocytes treated with the sera of psoriatic patients was 41.55%, and that of controls was 68.09%. The suppressive effect of sera in patients during the progressive stage and with more extensive lesions were stronger than that in the stable stage and with less lesions (P

The objective of this paper is to discover new potent inhibitors against EphB4 for cancer therapy via computer-aided drug design strategies including building 3D-QSAR models,virtual screening and molecular doc-king means.The first step is to generate pharmacophore models based on Catalyst/HypoGen algorithm.The best model,Hypo1,has the highest Correl value (0.96),the lowest RMS value (0.89),the closest total cost (101.26) to fixed cost (89.20),and the best Δcost (89.14).Subsequently,Hypo1 was subjected to test set validation and Fischer′s randomization verification and then was used as a 3D query to screen database.In order to further nar-row the number of hits,drug-likeness screening and molecular docking techniques were applied.Finally,23 novel molecules with diverse scaffolds were selected as possible candidates against EphB4 for further studies based on predicted activity analysis,docking scores,and binding modes analysis methods.