To explore the effectiveness of positron emission tomography (PET) respiratory gating based on time and amplitude to improve the reconstructed image artifacts. It is necessary to appropriately select acquisition and processing methods which ensure the readability of myocardial imaging images in radionuclide medicine myocardial imaging. This summary mainly discusses the identification method and how to avoid adverse effect for images from myocardial imaging process, and includes similarities and differences of varieties methods: identification for image artifacts of myocardial imaging, image reconstruction algorithms and software processing and so on. It should be significant to choose the appropriate method to identify myocardial imaging artifacts in image collection. The pros and cons of myocardial imaging image reconstruction algorithm and various software processing methods still remain unknown. How to choose better appropriate acquisition, image reconstruction and software processing methods for myocardial imaging need further study.

Heme oxygenase-1(HO-1) is an inducible stress protein.In addition to its role in heme degradation,several positive biological effects exerted by this enzyme have highlighted in recent years as anti-inflammatory,anti-apoptotic,anti-proliferative and cytoprotective functions.This oxidase system with multiple functions takes part in the pathophysiology of cardiovascular system.It is related to a variety of cardiovascular diseases including hypertension,atherosclerosis,ischemia/reperfusion injury and postangioplasty restenosis.

Purpose]To explore the paste treated postpartum body pain in curative effect. [Methods]By fol owing professor Zhang diagnosis ,the paper summarized with herbal paste for gynecology as the methods of treatment of postpartum body pain, and listed 2 proven cases.[Result]Postpartum woman is weak in both qi and blood, paste has an advantage in taking the fast-rising tonifying deficiency and curing correction,and it is superior to the liquid form, convenient for long-term use, paste treating pantalgia after childbirth in the disease has a unique advantage, and because of its smal side effects, especial y suitable for women. [Conclusion]Herbal paste in chronic disease of department of gynaecology modulation has a unique advantage due to the efficacy of comprehensive,and takes into consideration the physiological and pathological features of menstruation,leucorrhea,pregnancy and delivery. She focuses on the individual syndrome differentiation,and attaches great importance to the balances of relationship between pathogenic factors and healthy qi,yin yang heat cold,viscera and meridians qi blood,to achieve the aim of preventing and treating diseases,regulating the body ,and is worth promoting.

Objective To investigate the clinical significance of lipoprotein-associated phospholipase A2(LP-PLA2) measure-ment for type 2 diabetes mellitus(T2DM) patients combined with atherosclerosis .Methods The concentrations of LP-PLA2 ,cho-lesterol(CHO) ,triglyceride (TG) ,low density lipoprotein(LDL) ,high density lipoprotein(HDL) were measured for 47 T2DM pa-tients combined with atherosclerosis(patient group) and 94 healthy people who just underwent healthy examination and were proved to be healthy(control group) ,meanwhile the age and gender information of those people were collected .Then the tests results were compared between the two groups .Results There was no significant difference in age ,gender ,CHO ,HDL ,TG ,LDL between the two patient and control group(P>0 .05);Plasma LP-PLA2 level in patient group was higher than that in control group ,and the difference was statistically significant(P<0 .05) .Non-conditional Logistic regression analysis showed that the LP-PLA2 level was the risk factor with statistical significance(P<0 .05) .Conclusion LP-PLA2 concentration is an independent risk factor for athero-sclerosis in T2DM patients ,and its measurement has certain value for the diagnosis of atherosclerosis in T2DM patients .

As a platform to learn authentic patient experiences, learning health system(LHS)acquires big data from clinical environment and other health-related events, analyzes data to produce new knowledge and applies these knowledge to constantly guide clinical decision and practice, thus contributing effectively to better quality of care and lower medical cost. The authors reviewed LHS in terms of its role model, organizational structure, infrastructure framework, core characteristic elements framework and researcher′s core competence framework. Based on the study, the authors recommended the integration of multi-source heterogeneous medical information platform data, and enhancement of synergy among medical institutions and multi-disciplinary teams in the introduction and localization of LHS into China.

OBJECTIVE:To establish a method for the simultaneous determination of tobramycin and dexamethasone in Tobra-mycin and dexamethasone eye drop. METHODS:HPLC-column derivatization-double wavelength method was performed on the col-umn of Agilent C18 with mobile phase of 0.25% 3-hydroxymethyl aminomethane-acetonitrile-0.5 mol/L sulfuric acid(40:59:1,V/V/V)at flow rate of 1.0 ml/min,detection wavelength was 365 nm and 220 nm,column temperature was 30 ℃,and the volume in-jection was 20 μl. RESULTS:The linear range was 18.01-180.09 μg/ml for tobramycin(r=0.999 5)and 6.02-60.24 μg/ml for dexa-methasone(r=0.999 8);RSDs of precision,stability and reproducibility tests were lower than 1%;recoveries were 98.65%-100.01%(RSD=0.47%,n=9)and 98.92%-100.20%(RSD=0.50%,n=9),respectively. CONCLUSIONS:The method is simple,time-sav-ing,specific,reproducible,accurate and reliable,and can be used for the quality control of Tobramycin and dexamethasone eye drop.

ObjectiveTo observe the effects ofYushen Zhuyun Prescription on ovarian morphology and sex hormone of rats with decreased ovarian reservation (DOR) induced by tripterygium glycosides; To explore its mechanism of action.Methods Tripterygium glycosides solution was used to establish DOR model rats by gastric gavage. 48 female SD rats were randomly divided into blank group, model group, positive medicine group andYushen Zhuyun Prescription low-, medium- and high-dose groups.Yushen ZhuyunPrescription groups were given the low, medium, high dosagesYushen Zhuyun Prescription liquid; positive medicine group were given estradiol valerate liquid; model group and blank control group were given normal saline with the same amount, by gavage 2 times per day for 14 consecutive days. The general condition of the rats was observed; ovarian was weighed and the viscera index was calculated; ovarian morphology was observed by HE staining; the levels of serum estradiol (E2), follicle stimulating hormone (FSH) and testosterone (T) were detected by radioimmunoassay; the levels of inhibin B (INHB) and anti Mullerian hormone (AMH) were detected by ELISA.Results Compared with the blank group, ovarian tissue atrophied; the number of follicles was reduced; ovarian index and the level of E2, INHB and AMH decreased; the levels of FSH and LH increased in the model group (P<0.01). Compared with the model group, ovarian tissue morphology improved significantly; the number of follicle and corpus luteum increased; follicular atresia was reduced; ovarian index and the levels of E2, INHB, and AMH increased; the levels of FSH and LH decreased in Yushen Zhuyun Prescription high-dose group (P<0.01). INHB and AMH had significant correlation (P<0.01). ConclusionYushen Zhuyun Prescription can regulate hormone levels, promote the growth and secretion of follicle, and inhibit follicular atresia, thereby improve ovarian reserve function.

Objective To investigate the effect of vanillin via olfactory pathway on repetitive stereotyped behavior in autistic rats and its possible mechanism.Methods The model of autism was established by the single intraperitoneal injection of 600 mg/kg sodium valproate on day 12.5 of pregnant rats.Twenty-four autism animals were adopted according to the eye opening time,body mass and behavioral test.They were randomly divided into control group and vanillin group with 12 in each group,while the saline group rats as normal control group and the blank group rats as normal blank group.The repetitive stereotyped behavioral were examined in four groups of rats and the concentration of 5-HT in the amygdala was determined by immunohistochemical stainning.Results Compared with the control group,the repetitive stereotyped behaviors of vanillin group decreased (stereotype time (113.31 ± 18.45) s vs (250.52± 13.25) s,P＜0.01) and the expression of 5-HT in amygdala increased (5-HT positive neuron number(3.42± 1.32) vs (1.32± 1.04),P＜0.05).Conclusions Vanillin via olfactory pathway can improve repetitive stereotyped behaviors of autism rats,which is associated with increased the expression of 5-HT in amygdala.

Objective To evaluate the feasibility of 80 kV tube kilovoltage in aortic artery CT angiography with 256-slice CT. Methods A total of 62 patients undergoing aortic artery CTA were enrolled into this study and divided into conventional tube kilovoltage (120 kV, n = 31 ) and low tube kilovoltage (80 kV, n = 31 ). The signal-to-noise ratio (SNR) , contrast-to-noise ratio (CNR), volume CT dose index (CTDIvol) and effective dose (E) were evaluated, respectively. Results The mean image SNR was ( 35.92 ± 5.04) and ( 33.95 ± 8. 30) for conventional tube kilovoltage and low tube kilovoltage,respectively, with no significant difference (t = 1. 131, P =0. 263). The mean image CNR was (30. 32 ±4.78) and (28.71 ± 7.96 ) for conventional tube kilovoltage and low tube kilovoltage, respectively, with no significant difference ( t = 0. 964, P = 0. 339 ). The average effective dose ( E ) was ( 14. 28 ± 0.96 )mSv and (9. 72± 0. 81 )mSv for conventional tube kilovoltage and low tube kilovoltage, respectively, with significant difference ( t = 20. 12, P ＜ 0. 001 ). Conclusions 80 kV tube kilovoltage aortic artery CTA can reduce radiation dose by 31.9% , and contrast dose 50% ,and maintain image quality compared with 120 kV tube kilovoltage.

Objective To explore the effects of bone marrow mesenchymal stem cells (BMSCs) on viral myositis in mice. Methods Four-week-old BALB/C male mice were randomly divided into normal control group, myocarditis group, and BMSCs intervention group at different stages (3 days and 2 weeks). The mouse model of viral myocarditis was established by intraperitoneal injection of Coxsackie virus B3. The mice in the intervention group were injected with BMSCs in the tail vein at 3 days and 2nd week after the injection of the virus. Four weeks later, echocardiography was performed, and the pathological integral and collagen volume fraction (CVF) were observed and calculated by light microscopy. The qRT-PCR method was used to detect the mRNA expression of homogenates collagen I (col1α1) and collagen fiber III (col3α1) in myocardial tissue. Results Compared with the normal control group, the left anterior and posterior wall became thinner, the diameter and volume of the left ventricle at end systolic period was increased; left ventricular ejection fraction (LVEF) and short axis shortening rate (FS) decreased in the myocarditis group. The differences were statistically significant (P all<0.05). The LVEF and FS in each subgroup of the intervention group were better than those of the myocarditis group, and the improvement in the intervention group was more obvious at the 2nd week after the treatment of the myocarditis. The differences were significant (P all<0.05). Light microscope showed that myocardial CVF in myocarditis group was higher than in normal control group, and CVF in intervention group was reduced compared with myocarditis group and CVF in the 2nd week intervention group was lower than that in the 3 day intervention group. The differences were significant (P all<0.05). Compared with the control group, the mRNA expressions of col1α1 and col3α1 in the myocarditis group were increased, and they were lower in the intervention group than in the myocarditis group, and the differences were significant (P all<0.05). Conclusions BMSCs can reduce the degree of cardiac fibrosis and improve cardiac function in mice with viral myositis, and the intervention effect is better when the virus is infected in the 2nd week.