50%.Myocardial infarction(MI) models were created by ligating the distal left anterior descending artery in swines(n=18).Either BM-MSCs cells(5?106/mL)(n=6) or Ad5-HGF(4?109 pfu)(n=6) were transfused into infracted area via noninfarction-related artery at four weeks after MI.IMDM fluid was injected into the noninfarction-related artery in the control(n=6).Gate cardiac perfusion imaging was performed at four and seven weeks after LAD ligation respectively to evaluate the heart function and cardiac perfusion.Morphologic and histologic characteristics of the hearts were also studied.Results(1) New vessels firnation was found around the infarction area in all the three groups.By means of immno-histological staining,the density of capillaries and vessels with function in the BM-MSCs group and the Ad5-HGF group were 102.4?8.6/mm2 and 105.3?7.7/mm2,as well as 52.1?4.1/mm2 and 66.0?3.3/mm2 respectively.Both vessel density were higher than those of the control(55.5?4.7/mm2 and 16.4?3.5/mm2,P

Objective　To study the clinic, neuro-electrophysiology and molecular biology of Machado-Joseph disease (MJD).Methods　Family visiting, physical examination and the blood samples were analysed on molecular biology in 44 members of a family with MJD.The cases of inpatients were examined on cerebrospinal fluid and neuro-electrophysiology.Results　10 patients of the family attacked,which were consisted with autosomal dominant inheritance type. Age of the onset was 8～38 years old. The clinical characteristic was progressive severe spinocerebellar of ataxia,faciolingual myokymia,bulging eyes.Change of denervated muscle was revealed by neuro-etectrophysiological examination. Light atrophy was observed in cerebellar,brain stem, spinal cord.The genetic defect of MJD was located the long arm of chromosome 14 between D14S280 and D14S81, their distance was 3.0 cm.All tested patients had their CAG repeated expansion from 72 to 84 in the MJD gene.Conclusion　MJD is a neuro-degenerative disorder of autosomal dominant inheritance. The disease was clinically characterized by progressive severe spinocerebellar ataxia, no obvious changes of cerebrospinal fluid,neuro-electrophysiology, CT and MRI.The genetic defect of MJD was located the long arm of chromosome 14.The number of CAG repeated expansion mutation was associated with the age of the onset.

Objective To observe caesalpinia sappan aqueous extract's growth inhibiting and apoptosis inducing effects on human ovarian cancer cell line SKOV3. Methods Cell growth inhibiting effect was detected by cytometry; Examined were by trypan blue staining under a light microscope; Electronic microscopy was used to observe ultrastructure of SKOV3 cell affected by caesalpinia sappan aqueous extract's;With different concentration of caesalpinia sappan aqueous extract's acting on cells, cells cycle and apoptosis rate were analyzed by flow cytometry (FCM). Results The growth of SKOV3 was inhibited effectively by caesalpinia sappan aqueous extract's; typical morphology of apoptosis (cell shrinkage, chromatin condensation and apoptotic body formation) were observed and in a concentration-dependent manner. Flow cytometry detection showed: the experiment in vitro revealed growth of SKOV3 after treatment by caesalpinia sappan aqueous extract's at the different concentration. Apoptosis rate was increased with the increasing of the concentration of caesalpinia sappan aqueous extract's. Conclusion Caesalpinia sappan aqueous extract's can obviously inhibit growth of human ovarian cancer cell line SKOV3 and induce its apoptosis.

Objective To study the clinic, neuro electrophysiology and molecular biology of Machado Joseph disease (MJD).Methods Family visiting, physical examination and the blood samples were analysed on molecular biology in 44 members of a family with MJD.The cases of inpatients were examined on cerebrospinal fluid and neuro electrophysiology.Results 10 patients of the family attacked,which were consisted with autosomal dominant inheritance type. Age of the onset was 8~38 years old. The clinical characteristic was progressive severe spinocerebellar of ataxia,faciolingual myokymia,bulging eyes.Change of denervated muscle was revealed by neuro etectrophysiological examination. Light atrophy was observed in cerebellar,brain stem, spinal cord.The genetic defect of MJD was located the long arm of chromosome 14 between D 14 S 280 and D 14 S 81 , their distance was 3.0 cm.All tested patients had their CAG repeated expansion from 72 to 84 in the MJD gene.Conclusion MJD is a neuro degenerative disorder of autosomal dominant inheritance. The disease was clinically characterized by progressive severe spinocerebellar ataxia, no obvious changes of cerebrospinal fluid,neuro electrophysiology, CT and MRI.The genetic defect of MJD was located the long arm of chromosome 14.The number of CAG repeated expansion mutation was associated with the age of the onset.

Objective To search for the anticancer active substance from Caesalpinia sappan wood extractions. Methods Crude extracts were extracted from Caesalpinia sappan wood with different solvents.Liquid chromatography was applied to analyze the content of each essential component in the extraction fractions. Trypan blue exclusion test was performed to detect the growth suppression rate of human bladder carcinoma cell line T24 treated by the extraction fractions at different time course (20,40,60,80,100 min).The main component positively correlated with the cell suppression rate was separated out using repeated chromatography, thus the anticancer active monomer was obtained, with purity over 98 ％. The chemical constitution was determined using NMR (nuclear magnetic resonance), mass spectrum and infrared spectrum methods. T24 cell line, human ovarian cancer cell line SKOV3, mice sarcoma S180 and hepatic carcinoma H22 cell were chosen as target subjects, with mitomycin, hydroxycamptothecin as positive control drug, the inhibitory activity of the monomer was tested by trypan blue chromophobia method. Results Among the extraction fractions, R12 has a positive correlation with the cell suppression rate (r100 min=0.941, P＜0.001).Brazilin is the key component in R12.The inhibition rate of brazilin could reach 90.89 ％,98.65 ％,99.82 ％ and 100.00 ％ on T24,SKOV3,S180 and H22 respectively in 40 min at the concentration of 1.2 mg/ml,and its effect is much superior to that of the control drug mitomycin and hydroxycamptothecin. Conclusion Brazilin is one of the essential anticancer principles in Caesalpinia sappan wood.

The circadian levels of norepinephrine ( NE ) and dopamiae (DA) in the whole brain were determined spectrofluorometrically in control mice and in mice pretreated with ginseng saponin. All animals were adapted for a minimum period of 2 weeks to an environmental room equipped with, an automatically timed 12h-light and 12h-dark illumination cycle before experiment. Data obtained at 4 h intervals for 48h spans were analyzed by the mean cosinor method.It has been proved that the catecholamine concentrations in the brain vary diurnally. The whole brain NE and DA contents were highest during the middle of dark phase and decreased to a low levels after the onset of light phase. In administration of ginseng saponin altered the circadian pattern and ( or ) levels of brain catecholamine over controls. In order to check the above results reserpine was injected to mice. The levels of NE and DA remarkedly depleted at the times studied, and they showed a significant circadian rhythms as well.It seems that ginseng saponin selectively modulates the circadian variations of brain NE and DA, and its effects may be as a cosinor function of the time of day.

The clinical manifestations of the disease include dysphagia, foreign body sensation in pharyngeal, retrosternal pain and regurgitation. Physical examination showed a sausage-shaped mass hanging outside the mouth, sometimes. CT scan demonstrated a benign placeholder in upper segment of esophagus. Surgery is the only way to achieve radical cure. Pathological examination: inflammtory fibroid polyp.
Deglutition Disorders ; Esophagus ; pathology ; Humans ; Hypopharynx ; pathology ; Pharynx ; Polyps ; pathology ; Tomography, X-Ray Computed

This article expounds on the necessity of the introduction of comparative imaging in bone and joint imaging teaching according to the bone and joint imaging teaching situation and modern medical radiographic features.Meanwhile,it discusses the application of comparative imaging in bone and joint imaging teaching from aspects of teaching method,teaching effect evaluation and prospects of the comparative imaging.

Objective To observe the effects of brazilin on proliferation and apoptosis in T24 cells.Methods Trypan blue exclusion test was performed to detect the inhibition of brazilin on the growth of T24 cell lines in vitro cultured within different time.After exposure to different concentrations of brazilin,homogeneous bioluminescence assay was used to detect the inhibitory action of brazilin,Caspase-3 and Caspase-9 activity on T24 cells.Cellular apoptosis was measured by flow cytometry (FCM) and observed by laser scanning confocal microscope.Results Brazilin could significantly inhibit the proliferation of T24 cells after 8 hours,the inhibitory rates of the brazilin at concentration of 25,50,100,200 μg/ml against T24 cells respectively were 43.19 ％,60.73 ％,86.38 ％ and 93.89 ％ (P ＜ 0.05).After exposured to 50 μg/ml of brazilin,the inhibition ration to T24 cells increased with time prolonging (52.72 ％ in 4 h,60.73 ％ in 8 h,91.77 ％ in 24 h,96.41％ in 48 h) (P ＜ 0.05).The activity of Caspase-3 and Caspase-9 increased slightly when brazilin was at 25 μg/ml,but there was no statistical differences compared with that in the control group (P ＞ 0.05).When cells were treated with an increase of the concentration of brazilin from range of 7.5-60 μg/ml for 16 hours,the apoptosis ratio in turn showed a upward trend of 0.15 ％,1.35 ％,2.91％,34.76 ％.It could be seen by laser scanning confocal microscope that the apoptosis occurred in the cells.Conclusion Brazilin can effectively inhibit the proliferation of T24 cells and induce apoptosis in a dose and time dependent manner.

Objective To evaluate the mutagenicity of hydrolysate of Meretrix meretrix Linnaeus soft tissue, so as to provide experimental basis for its exploitation.Methods Three mutagenicity tests were used to evaluate the mutagenic effects, including Ames test, CHL chromosome aberration assay and bone marrow micronucleus assay in mice.Results In Ames test, the revertant colonies numbers in each group were twice less than the numbers of spontaneous revertant colo-nies, five bacterial strains showed negative results with or without S9 activation, and the result of Ames test was negative. The CHL chromosome aberration assay and bone marrow micronucleus assay showed that the chromosome aberration rate and micronucleus rate of each dose group showed no significant difference compared with the negative control group, respec-tively ( P>0.05) .Conclusions Under this condition, the results show that all of the Ames test, chromosome aberration assay and bone marrow micronucleus assay are negative, and no mutagenicity is observed in the hydrolysate of Meretrix mer-etrix Linnaeus soft tissue.