Objective To study the effects of Danhong mixture on platelet aggregation of rabbits.Methods 40 rabbits were randomly divided into 5 groups,8 rabbits in each group,of blank control group (treated with 0.5％ sodium carboxy methyl cellulose of the same volume),Danhong mixture of 5,2.5,1.25 g/kg group,aspirin group (treated with 0.025 g/kg aspirin).Each group was performed gastric lavage according to the ration of lml/kg,once daily,for continuous 8 days.Blood was obtained from heart 1 hour after last administration,then adenosine diphosphate (ADP),collagen,arachidonic acid (AA) were used for platelet aggregation test.Results Inhibition rate of Danhong mixture (5,2.5,1.25 g/kg) on ADP induced rabbit platelet aggregation were 9.4％,5.1％,and 0.6％ respectively,on collagen induced platelet aggregation were 34.5％,11.1％,and 5.6％; on AA induced platelet aggregation were 21.4％,11.6％,and 2.3％ respectively.Conclusion Danhong mixture had inhibitive action on platelet aggregation.

Objective To observe analgesic and croton oil-induced ear swelling effect of Chinese pine node.Methods Acetic acid writhing method and water tail-flick method was used to observe the analgesic effect,croton oil-induced ear swelling method was used to research anti-inflammatory effect.Results The inhibition rate of 1.0 g/kg,0.5 g/kg,0.25 g/kg of Chinese pine node on mice writhing response induced by acetic acid was 54.0％,44.3％,38.1％,and the inhibition rate on croton oil-induced mouse ear swelling was 48.4％,14.7％,7.4％.But no obvious influence on mice water tail-flick pain threshold.Conclusion Chinese pine node has anti-inflammatory and analgesic effects.

Objective To study the effects of Danhong Granule on blood rheology of blood stasis rats,and further to investigate the mechanism of promoting blood circulation and removing blood stasis.Methods 60 SD rats were selected and randomly divided into 6 groups,namely,normal control group,model group to the capacity of 0.5％ sodium carboxymethyl cellulose (CMC-Na),Danhong granules in high dose group (3 g/kg),Danhong granules dose group(1.5 g/kg),Danhong granules low dose group(0.75 g/kg),and compound Danshen dripping pill group(3 g/kg).Each group received gastric lavage at 1 ml/kg volume,1/d,for 7 days.After the last administration,the rat model of blood stasis was reproduced by subcutaneous injection of high dose epinephrine with ice water bath method.The effects of Danhong granules on blood rheology of blood stasis model rats were studied.Results Danhong granules in high dose group and compound Danshen dripping pills could reduce blood stasis model rats in blood viscosity (high shear,cut and low cut values were:Danhong granules in high dose group were(5.69±0.16)mPa·s,(6.97±0.48)mPa·s,(22.56±1.69) mPa·s; Compound Danshen Dropping Pill group (5.71 ± 0.24) mPa·s,(7.04 ± 0.51) mPa·s,(22.63 ± 1.64) mPa·s,plasma viscosity respectively:Danhong granules in high dose group were (1.43 ±0.03)mPa·s,compound Danshen dripping pill group(1.42±0.03)mPa·s,RBC (hematocrit value were:Danhong granules in high dose group were (0.42± 0.027) L/L,compound Danshen dripping pill group (0.41 ± 0.032) L/L; Danhong granules dose group could significantly lower the blood stasis model rats in blood viscosity (high,low cut)value (5.95 ± 0.37) mPa·s,(23.45 ± 1.57) mPa·s,plasma viscosity(1.47 ± 0.02)mPa·s and RBC hematocrit value (0.48 ± 0.029) L/L low dose group; Danhong granules low dose group could reduced blood stasis model rats obviously in blood viscosity (high shear,cut and low shear),plasma viscosity and hematocrit values of RBC [respectively:the whole blood viscosity in(7.15±0.41)mPa · s,(7.86±0.36)mPa · s,(28.68±1.69)mPa · s,(1.67±0.03)mPa · s,(0.50±0.033)L/L].Conclusion Danhong Granule can reduce the blood stasis model rats in blood viscosity (high shear,cut and low shear),plasma viscosity and hematocrit value of RBC,by activating blood circulation,removing blood stasis and improving blood rheology.

Objective To evaluate the influence of respiration on the radiation dose distribution within target volume in radiotherapy with film dosimetry. Methods Radiation of 50 MU was delivered by a square, round, ellipse, dumb bell, or female shaped filed to the films within a moving or motionless Respiration Motion Phantom respectively, the dose distributions for the two motion status were measured and compared. In order to further verify the impact of respiration, a plank phantom was used on different shifting value: 0, 0.5, 1.0, 1.5 and 2.0 cm, respectively. A square, round, or eUipse-shaped filed was used for irradiation and the distributions in different status were measured and compared with film dosimetry. Iso-dose line comparison, NAT(Normalized Agreement Tests) and γ comparison were used for the comparison of dose distributions. Fs can be an index to reflect the variability of the areas that surrounded by iso-dose lines. (FS90, FS50, FS25 delegates the ratio of the areas that surrounded by 90 %,50 %,25 % iso-dose hne in different situation respectively). Results (1) Compared with motionless situation, the FS90 in horizontal movement situation became small and the FS25 became large. As the displacement became larger, the FS90 became larger and the FS25 became smaller. FS in vertical movement situation, square and dumb bell fields changed while the others didn't have a change. (2)γ and NAT comparison: In the horizontal movement situation, compared with the static phantom, Pγ < 60 % and PNAT < 75 %. Under vertical movement situation, Pγ were less than 85 % for the square, round, dumb bell and female shaped fileds. In the plank phantom verification, Pγ and PNAT became smaller as the movement became larger. Conclusions The respiration can impact on the dose distribution within the target volume in radiotherapy, leading to a smaller area of higher dose level and an expanded area of lower dose level. The influence will become more significant with larger movement of the target.

BACKGROUND: It has been confirmed that some casting alloy can inhibit the activity of human gingival fibroblasts in vitro, which can be used for inducing apoptosis of human gingival fibroblasts (HGFs). However, the mechanism of this effect is poorly understood.OBJECTIVE: To investigate the effect of Ni-Cr, Co-Cr, Au and pure Ti ceramic alloys on the expression of P70S6k by HGFs in vitro.DESIGN, TIME AND SETTING: Grouping controlled experiments with the expression of P70s6k by HGFs in each group as observation objects. Experiments were performed at the Institute of Immunohistochemistry and Western blotting, Technology Building of Liaoning Medical University from July to October 2009.MATERIALS: Ni-Cr, Co-Cr, Au and pure Ti ceramic alloys were processed by Shenzhen Mecodent Dental Laboratory Co., Ltd. The gingival from gingival neck of the first premolar (which goes to be extracted due to the need of orthodontic treatment) of teenager who was15 years old without any clinical disease was obtained, followed by the primary culture of HGFs. The fifth passage of cells in logarithmic phase were used to measure indexes.METHODS: Ni-Cr, Co-Cr, Au and pure Ti ceramic alloys were incubated in DMEM to prepare alloy leaching liquor, which were then added in HGF medium at 10% concentration. DMEM containing 10% fetal bovine serum was used in negative controls. MAIN OUTCOME MEASURES: The expression of P70S6k in each group was measured by Western Blotting following 72 hours of intervention with alloy leaching liquor.RESULTS: Western-blot results showed that there was no significant difference in the average gray value of P70S6k expression in Au, pure Ti ceramic alloys and control groups (P > 0.05). There was also no significant difference between Au ceramic alloys and pure Ti ceramic alloys groups or between Ni-Cr ceramic alloys and Co-Cr ceramic alloys groups. (P > 0.05), but Ni-Cr ceramic alloys group or Co-Cr ceramic alloys group showed significant difference compared with the Au, pure Ti ceramic alloys and control groups (P < 0.01).CONCLUSION: Au ceramic alloys and pure Ti ceramic alloys show that they have no obvious effect on the proliferation activity of HGFs. Ni-Cr and Co-Cr ceramic alloys showed an inhibitory effect on the proliferation activity of HGFs.

In order to identify host factors which interact with the movement protein (MP) of Apple chlorotic leaf spot virus (ACLSV), ACLSV MP was cloned into the bait vector pGBKT7 and used to screen a cDNA library of Malus sylvestris cv. R12740-7A, which had previously been constructed by yeast two-hybrid sequencing transformation. The protein functions of the identified host factors were determined according to their gene annotations in GenBank. The result showed that the bait plasmid pGBKT7-MP showed no virulence or self-activating effect on yeast strain Y2H Gold. Sixty-nine interactor proteins were identified, which were divided into the following 10 classes according to their described functions: hydrolases; pathogenesis-related proteins; DNA binding proteins; phosphatases; ligases; proteins with catalytic activity; phenylalanine ammonialyases; peroxidases; NAD binding proteins; and proteins of unknown function. Bioinformatic analysis of gene homology suggested that phosphatases, pathogenesis-related proteins and glyceraldehyde-3-phosphate dehydrogenase A may play an important role in the interaction between virus and host. This study may provide a theoretical basis for the further study of viral pathogenesis and virus-host interaction mechanisms.
Flexiviridae ; genetics ; metabolism ; Malus ; genetics ; metabolism ; virology ; Molecular Sequence Data ; Plant Diseases ; genetics ; virology ; Plant Proteins ; genetics ; metabolism ; Plant Viral Movement Proteins ; genetics ; metabolism ; Protein Binding ; Two-Hybrid System Techniques

In recent five years,brain imaging studies suggested that internet addicts' neural pathway have abnormalities in reward circuits,executive control system,and decision-making system when they are in resting state or induced state.For internet addicts,in the aspect of reward circuits,they showed decreased metabolism level when undergoing a resting-state fMRI scan,and enhanced reward sensitivity as well as decreased loss sensitivity when functioning.In the aspect of executive control system,the related brain areas were associated with reduced white matter integrity and disrupted functional comnectivity in resting-state.When the task was internet-related,internet addicts showed enhanced executive control function.However,when the task was not internet-related,they showed reduced executive control function.In the aspect of decision-making system,reduced cortical thickness in related brain areas was found when internet addicts are in resting-state,and they possess high impulsivity and high risk tendency when they are in induced state.These findings are consistent with the conclusions of substance addicts which are based on the research of brain imaging,therefore,we preliminary think the internet addiction is a new type of addictive mental disorder.

Objective To investigate the effects of sevoflurane postconditioning on lung function in patients undergo-ing heart valve prosthesis implantation with cardiopulmonary bypass (CPB). Methods Thirty patients, scheduled for heart valve prosthesis implantation, were randomly divided into control group (C, n=15) and sevoflurane postconditioning group (S, n=15). Anesthesia was maintained by intermittent intravenous injection of midazolam, fentanyl and pipecuronium. In group S, 2%sevoflurane was inhaled continuously for 15 min , 2 min before aortic unclamping. Blood samples were taken at 30 min before CPB (T2), 30 min after CPB (T3), 6 h (T4), 12 h (T5) and 24 h (T6) after operation. The values of p(O2), SaO2, airway peak pressure (Ppeak) and airway plateau (Pplat) pressure during the time of mechanical ventilation were recorded. Oxygen index (OI), alveolar arterial oxygen tension difference (AaDO2), dynamic pulmonary compliance (Cdyn) and static pulmonary compli-ance (Cstat) were calculated. Results Compared with group C, the values of SaO2 and Cdyn were significantly higher in group S after 30 min of CPB. The values of OI, p(O2), Cdyn and Cstat were significantly higher in group S than those of group C after 6 h of operation. The value of AaDO2 was significantly lower 12 h and 24 h after operation than that of group C (P＜0.05). Conclusion CPB led to the lung injury. The sevoflurane postconditioning has a protective effect on lung function in pa-tients undergoing cardiac valve replacement with CPB.

ObjectiveTo observe the effect ofHaizao-Xiangsheng mixture on signs and symptoms, blood index and tissue pathology of rabbit models with chronic pharyngitis.Methods60 Japanese white rabbits by random grouping method were divided into normal control group, model group, positive control group andHaizao- Xiangsheng mixture with high, medium and low dose group, with 10 rats in each group. Except the normal control group, rabbits in other groups were performed spraying ammonia in pharyngeal portion and submucosal injection of turpentine oil preparation to create chronic pharyngitis models. TheHaizao- Xiangsheng mixture, high, medium and low dose group were treated withHaizao-Xiangsheng mixture of 42, 21, 10.5 g/kg, the positive control group was treated with watermelon frost Runhou tablet suspension 5.04 g/kg, the normal control group and model group were treated with the same volume of saline. Animal signs and symptoms were recorded daily (including general conditions and temperature). After continuous administration of 7 days, red blood cell count (RBC), white blood cell count (WBC), percentage of neutrophils (N%), the percentage of mononuclear cells (M%) and percentage of lymphocytes (L%) were detected to observe the histological change of pharyngeal mucosa and lower tissue pathology.ResultsAfter administration, compared with the model group, high dose group ofHaizao-Xiangsheng mixture rabbit body temperature dropped (38.90 ± 0.21℃ vs. 39.23 ± 0.39℃,P< 0.05), WBC (10.1 ×1012/L ± 1.73 ×1012/Lvs. 13.1 ×1012/L ± 1.69 ×1012/L) decreased, and RBC increased (5.73 ×109/L ± 0.59 ×109/Lvs.5.19 ×109/L ± 0.43 ×109/L,P<0.01).ConclusionsHaizao-Xiangsheng mixture can improve signs and symptoms, hematology indexes and histopathological changes of the experimental rabbit models of chronic pharyngitis.

Objective To investigate the efficiency and safety of agkistrodon hemocoagulase on coagulation function in pa?tients undergoing cardiac valve replacement with cardiopulmonary bypass (CPB). Methods In this prospective,randomized controlled trial,80 eligible patients accepted valve replacement were assigned to control group (n=20) and agkistrodon hemoco?agulase groups (H1, H2, H3) according to the different timing of administration. Twenty patients were given treatment 20 minutes before anesthesia induction (H1 group), 20 patients were given treatment 20 minutes after CBP (H2 group) and 20 patients were given treatment after CBP (H3 group). Coagulation parameters including prothrombin time (PT), activated partial thromboplas?tin time (APTT), thrombin time (TT), fibrinogen (Fib) and platelet (PLT) were detected 20 minutes before surgery (T0), immedi?ately after surgery (T1) and 24 hours after surgery(T2). Data of 24-h postoperative drainage of mediastinal and pericardial, dura?tion of mechanical ventilation, stay time of intensive care unit (ICU), the actual days of hospitalization and hospital costs were recorded. The clinical parameters were also recorded including blood transfusion after surgery, secondary thoracotomy, aller?gies, liver and kidney dysfunction, deep vein thrombosis and neuropsychiatric symptoms. Results Compared with control group, values of PT, APTT and TT at T1 and T2 were significantly lower in H1, H2 and H3 groups (P<0.05). Compared with T0, values of PT, APTT and TT at T1 and T2 were significantly higher in all groups of patients (P<0.05). Values of PT and TT at T1 and T2 were significantly decreased in H3 group than those of H1 group (P<0.05). The pericardial and mediastinal drainage, the duration of ventilation support within 24-h after surgery were significantly lower in H1, H2 and H3 groups than those of control group (P<0.05). There was no significant difference in the incidence of adverse events between groups. Conclusion Agkis?trodon hemocoagulase is safe and effective in patients undergoing cardiac valve replacement with cardiopulmonary bypass.