60mg /kg?d ip, of paeonol were given to rats for 15 days. The myocardial ischemia reperfusion injury model was produced by occluding the left coronary artery and releasing the occlusion in rats. This significantly decreased myocardial Ca++-ATPase activitics and CH/PL radical, FFA content, improved mitochondrial membrane fluidity and kept them away from oxygen free radical damage. These results indicated that paeonol has membrane protective effect on myocardial ischemia rcperfusion injury probably by inhibiting the oxygen free radicals and subsequent lipid peroxidation.

Objective To study the application of the intelligent optimum tube voltage ( Care kV) combined with automatic tube current ( Care Dose 4D) technique in dual source CT scanning for the abdomen .Methods 180 adult patients underwent whole abdominal CT examination from February 2016 to March 2016 of were selected as the retrospective research objects .On the basis of reference mAs of the image quality the patients were divided into three groups using completely randomized grouping method with 60 patients in each group, such as 250 mAs group, 200 mAs group, and 150 mAs group.The other scanning parameters and image reconstruction parameters were the same .The liver parenchyma CT values and image noise( SD) at the second hepatic portal level were measured .The signal-to-noise ratios ( SNR) in the three groups were compared as well as contrast to noise ratio ( CNR ) , noise ( SD ) , the average volume CT dose index (CTDIvol), dose length product (DLP) and effective dose(E).Results The kV and mAs values in the plain scan , arterial phase scan and portal phase scan in the three groups of patients had statistically significant differences(F=35.25, P<0.05).With the reducing of the refference mAs, the frequency of choosing lower kV in three groups of patients increased gradually .The CTDIvol, DLP and E of plain scan, arterial and portal phase in three groups of patientshad significant difference (F=31.51, P<0.05).With the decline of the reference mAs, the radiation dose decreased gradually , with 150 mAs group lowest.The SNR, CNR and noise of three phases in 250 mAs group and 200 mAs group had no statistically significant difference (F=1.61, P>0.05).In 250 mAs group and 150 mAs group, the SNR and the noise of plain scan and arterial phase images had no statistically significant difference ( F=1.98, P>0.05) , and SNR of portal phase images and CNR of three phases had statistically significant difference (F=27.64, P<0.05);In group 200 mAs and group 150 mAs, the SNR, CNR and noise of plain scan and arterial phase images had no statistically significant difference (F=1.95, P>0.05), and the SNR and CNR of portal phase images had significant difference (F=19.63, P<0.05).Conclusions For the combined use of Care kV and Care dose 4D,it is feasible to select appropriate reference mAs in reducing radiation dose without sacrificing imaging quality .

Objective To investigate the anti-oxidation effects of compound Chinese medicine of Yiqiling,on the spon- taneously hypertensive rats(SHR) and to explore the new target for improving the prognosis of hypertension.Method SHR were randomly divided into 2 groups:Yiqiling group and the control group.The serum content of malondiadehyde (MDA) and superoxide dismutase(SOD),and the urine content of 8-iso prostaglandin F2?(8-isoPGF2?) in two groups were measured.Examination of the gene expression profile was analyzed by using cDNA microarray.Three of the anti-oxidation genes were selected to undergo RT-PCR and quantitative real-time PCR.Results The 8-isoPGF2?urine level and MDA serum level were lower,and SOD serum level was higher in Yiqiling group than those in the control group,the differences of the above indexes had statistical significance.In Yiqiling group the expression of 354 genes was up-regulated and that of 121 genes was down-regulated in comparison with the control group.The results of the Hsphl,Hspca and Pam genes detected by RT-PCR and quantitative real-time PCR were consistent with those detected by the microarray examination.Conclusion Yiqiling has anti-oxidation effects and improvement on the prognosis of SHR,and its possible mechanism is related with the regulation of Hsphl,Hspca and Pam genes expression.

Objective To explore the cause,classification,incidence rate,diagnosis and treatment of pulmonary sequestration.MethodsThe data of 22 cases was analysed and the literatures were reviewed.ResultsThere were 22 cases of sequestration that confirmed by pathology after resected in our department from 1997 to 2007,of which 16 cases(72.7%)were confirmed before operation.The incidence rate was 5.7% comparing with the same time lobectomy.There were 20 cases(91%) of intralobar type and 2 cases(9%) of extralobar type.In intralobar type,18 cases were accompanied with infection and 2 cases with hemoptysis.2 cases had no symptom in extralobartype.ConclusionPulmonary sequestration is not an rare disease.The diagnosis mainly depends on X-ray.Sometimes,bronchography,retrograde arteriography or CT can also help making the diagnosis correctly.Operation is the main treatment method.Special attention should be paid to avoiding injure to the vessels during operation.

Objective To approach the cause,radiologic images feature and clinical diagnostic technique in pulmonary aspergillosis.Methods We retrospectively evaluated the clinical presentation,symptoms,x-ray film and radiologic images,and clinical diagnostic methods of 36 cases with pulmonary aspergillosis.Results All cases were cured though operation and conformed by pathologic diagnosis.28 cases were diagnose as pulmonary aspergillosis,4 cases as lung cancer,3 casses as pulmonary tuberculosis,1 case as pneumonia.Conclusion Pulmonary aspergillosis was usual secondary to pulmonary tuberculosis,radiologic images feature was contribute to diagnosis,pathologic proof and fungus isolation in infected pulmonary tissue were gold standard.

Objective:To investigate the correlationship between levels of erythrocyte receptor type1(E-CR1) and disease activity and abnormal criteria of immunology in systemic lupus erythematosus (SLE)and to study the E-CR1 levels in pathogenesis of SLE.Methods:The fluorescence intensity in sera from 72 patients with SLE and 20 cases of normal controls was detected by flucytometry.Complement(C3,C4),immunoglobulins(IgG,IgA and IgM),gammaglobulins(?-G),erythrocyte sediment rate(ESR) and blood cell counts,including white blood cell(WBC),red blood cell(RBC),hemoglobin(HGB),hematocrit(HCT),mean corpuscular volume(MCV)and platelet(PLT) were detected at the same time.The scoring instruments of systemic lupus activity measure (SLAM) were used to evaluate disease activity.Results:The E-CR1 levels in patients with SLE were lower significantly than that in normal controls (P

Objective　To synthesize the artificial antigen methylparaoxon （M1600）.Methods　Methylparaoxon was reduced into amino-methylparaoxon by using acetic acid-zinc power-hydrochloric acid. Artificial antigens M1600-BSA， M1600-TTH　were synthesized by conjugating amino-methylparaoxon to bovine serum albumin （BSA）and tachypleus tridentatus hemocyanin （TTH）directly after diazotization.Results　 Rabbits had been immunized with M1600-BSA for 10 weeks， and the high titer and high specificity antiserum from those rabbits was testified by doubled agar gel diffusion and indirect ELISA．Conclusion　An artificial antigen was obtained successfully and this made it possible to establish the immunoassay of M1600.

With the development of molecular and cell biology,new concept of the etiology of pituitary adenomas was taking shape.The etiology of pituitary adenoma was considered to be related to gene mutation and transforming factors.This paper reviews the roles of gene mutations,transforming factors,expression of receptors on cells and growth factors in the etiology of pituitary adenomas.

Objective:To study the histogenesis and cell differentiation of desmoplastic ameloblastoma.Methods:The expression of various protein filaments was detected by immunohistochemical stainning in 20 cases of desmoplastic ameloblastoma and the ultrastructure of the tumor was observed in 4 cases.Results:CKH,CK8 and CK19 were positive in spindle-shaped and polygonal epithlium tumor cells.Vimentin was positive in mesenchymal fibrocytes and smooth muscle actin in some mesenchymal cells.Ultrastructural observation found that tonifilaments were in epithelial cells and there were desmosomes between these cells.In stroma myofibroblasts were presented.Loose connective tissue could be seen around some epithelial cell nests.Conclusion:Desmoplastic ameloblastoma may be arise from the early stage of the dental germ formation, epithelial cells of the tumor had the tendency to differentiate to the keratinized cells.

AimTo observe the effect of infiltration of Methylprednisolone on injured spinal nerve root and the protective function of Methylprednisolone to non-impressed spinal nerve root lesion. Methods The spinal nerve roots were injured in 20 rabbits. Three days later local Methylprednisolone infiltration of spinal nerve root profromed in rabbits in experiment group, while rabbits in the control roup received equal amount of 0.9% natriichloridi instead. The conduct velocity of spinal nerve root was measured one week after operation. The histological change of spinal nerve root and immunohistochemical stain of posterior horn of spine were observed by microscope. Results The conduct velocity was recovered obviously in experiment group. In observation of spinal nerve we found the edema and hyperaemia of matrix were impaired obviously, the lesion focus was minimized, the amount of inflammatory cells was decreased. The area of substance P positive fiber and its terminus in posterior of spinal was smaller in experiment group remarkably than in control group. ConclusionsThe local infiltration of Methylprednisolone can relieve inflammation, inhibit the transmission of pain and accelerate recovery of spinal nerve root.