Objective: To analyze the imaging effect of 3D-nerve on brachial plexus in neonates compared with DWI with background body singal suppression (DWIBS), 3D-short T1 inversion recovery (3D-STIR). Methods: A total of 15 neonates with brachial plexus injury were recruited and underwent MR scan with sequences including 3D-nerve, DWBIS, 3D-STIR. Images were evaluated for pulsation artifact, heterogeneous fat saturation, brachial plexus branches, nerve-fat ratio, nerve-muscle ratio. Results: The brachial plexus showed poor results in DWIBS sequence images, which could not be observed. Pulsation artifact and heterogeneous fat saturation had no statistical significance between 3D-nerve and 3D-STIR (both P>0.05). 3D-nerve and 3D-STIR showed 100% (15/15) of the brachial plexus roots and brachial plexus trunks. Brachial plexus bundles, brachial plexus branches were seen in 100% (15/15), 66.67% (10/15) on 3D nerve and 93.33% (14/15), 53.33% (8/15) on 3D-STIR, the differences were not statistically significant (P=1.00, 0.71). 3D-nerve performed better nerve-to-fat ratio and neuro-to-muscle ratio compared with 3D-STIR (both P<0.05). Conclusion: The 3D-nerve performed better for neonatal brachial plexus injury than DWBIS and 3D-STIR.

Objective: To optimize the extraction process of volatile oil from Fructus Litseae.Methods: Supercritical CO2 extraction (SFE-CO2) was used to extract volatile oil from Fructus Litseae, and the extraction process was optimized by a central composite design-response surface method (CCD-RSM).The kind and content of volatile oil extracted by SFE-CO2 and steam distillation (SD) were detected by gas chromatography-mass spectrometer (GC-MS).Results: The highest extraction rate of the total effective constituents was 66.26% when the optimum conditions were as follows: the extraction temperature was 44 ℃, the extraction pressure was 26 MPa, entrainer ethanol was 11 ml and the extraction time was 40 min.It was revealed that neral, geranial and limonene were the major constituents.Compared with that of SD, the kind of volatile oil extracted by SFE-CO2 was fewer while the content of citral extracted by SFE-CO2 was higher.Conclusion: The extraction process optimized by CCD-RSM provides reference for the extraction method and quality control of volatile oil from Fructus Litseae.

Objective To evaluate the application valve of intraoperative device closure secundum atrial sepetal defect (ASD) associated with deficient rims inducted by transoesophageal echocardiography (TEE). Methods Twenty-three patients with ASD were diagnosed by transthoracic echocardiography (TTE) ,and underwent an attempted intraoperative device closure through a right antierior minithoraetomy. The positon, type and size and rim of ASD were defined by TEE in preoperation, the placement of the device inducted and evaluated by TEE intraoperation,and followed by TTE after one week. Results Twenty-three patients with ASD were closed excellently. There were not shunt of atrial level in 20 patients, trivial shunt in 3 patients. However,follow-up after one week TTE indicated that all patients had no shunt,and the diameter of right atrium and right ventricle was decrease significantly (P <0.05), and pulmonary artery pressure was less than before (P <0.05). Conclusions It is very important that TEE induct the closure of ASD associated with deficient rims in micro-operative room.

Injury monitoring is an important approach for injury control and is an important part of comprehensive disease monitoring. With the development of medical digitalization, an intelligent injury monitoring system has been created in Yinzhou District, Ningbo City, Zhejiang Province using artificial intelligence techniques based on Ningbo Municipal Health Information Platform and has been applied across the district since 2019. The manual card-reporting mode has been transformed to intelligent card-reporting mode in this system, which achieves functions of epidemiological analyses of the monitoring data, early warning of high-incidence injuries, classified management of injury and quality control of report cards. Nearly 300 thousand cards have been automatically reported since the system was online available since November 2022, and the epidemiological characteristics of injury were preliminarily understood, which provide data supports to early earning and interventions of injury. The intelligent injury monitoring system greatly improves the injury monitoring efficiency and card-reporting quality, and saves a large number of manpower and material resources, which provides a powerful technical support to widespread injury monitoring.

Objective To prepare a novel ultrasound contrast agent , targeted phase-shift lipid nanoparticles mediated by tumor homing and penetrating peptide tLyP-1 ,and to evaluate its characteristics . Methods The nanoparticles were prepared by filming-rehydration and acoustic-vibration methods .The morphology ,distribution ,particle size and zeta potential were detected . After heating and irradiating of low intensity focused ultrasound ( LIFU) ,the phase-shift characteristic and the enhancement effect in vitro were observed . The tumor homing and cell-penetrating properties of the nanoparticles were examined by confocal laser scanning microscopy and flow cytometry . The cytotoxicity of the nanoparticles was evaluated by CCK 8 assay . Results The size and distribution of nanoparticles were uniformed . The size and zeta potential of nanoparticles were ( 399 .50 ± 29 .98) nm and ( 3 .28 ± 1 .72) mV ,respectively . When the nanoparticles were heated to a temperature of 45 ℃ or after irradiated by LIFU ,nanoparticles generated phase-shift and enhanced ultrasound imaging in vitro ( P < 0 .05 ) . The confocal laser scanning microscopy showed that nanoparticles mediated by tLyP-1 can targetedly aggregate to cell membrane of MDA-MB-231 and penetrate into the cell ,but not to HUVEC . The flow cytometry showed that intracellular fluorescence intensity of nanoparticles mediated by tLyP-1 in MDA-MB-231 group was higher than that in control groups ( P <0 .05) . The CCK8 assay indicated that different concentrations of nanoparticles had no significant effects on cell activity ( P > 0 .05 ) . Conclusions A novel ultrasound contrast agent , targeted phase-shift lipid nanoparticles mediated by tumor homing and penetrating peptide tLyP-1 ,is prepared successfully . It can target to MDA-MB-231 cell and penetrate into the cell in vitro ,and enhance ultrasound imaging in vitro after LIFU irradiation ,which expected to become a novel tumor targeted ultrasound contrast agent and achieve ultrasound molecular imaging at the level of tumor cell .

Objective:To assess whether Veronicastrum axillare (V. axillare) can ameliorate ethanol-induced gastric mucosal lesions in rats, reduce the production of pro-inflammatory cytokines, suppress apoptosis and improve local microcirculation disturbances.
Methods:Totally 48 male Sprague-Dawley rats were randomly divided into six groups, eight rats in each group. Rats in the normal group and the model group were administered with 0.9%normal saline respectively. Rats in the positive group and ranitidine group were administered with 0.18% ranitidine suspension by intragastric administration respectively. Those in the high dose V. axillare group, the medium dose V. axillare group and the low dose V. axillare group were administrated with V. axillare at the daily dose of 2.8 g/kg, 1.4 g/kg and 0.7 g/kg by intragastric administration. Gastric mucosal lesions were produced by intragastric administration of absolute ethanol. Water extract of V. axillare was successively injected for 14 d and last day was injected 1 h before ethanol administration. Gastric mucosal ulcer index and ulcer inhibitory rate were counted by improved Guth methods. The tissue sections were made for pathological histology analysis. Also, we measured the concentrations of tumor necrosis factor-α (TNF-α) and endothelin-1 (ET-1) in gastric mucosal, as an index of the pro-inflammatory cytokines, apoptosis and local microcirculation. Besides, the mRNA contents of TNF-αand ET-1 were measured to verify effects on gene expression by real-time fluorescent quantitative PCR.
Results: Water extract of V. axillare significantly ameliorated the gastric mucosal lesions induced by ethanol administration (P<0.01). Pro-inflammatory cytokines, TNF-αand ET-1 were increased after ethanol administration and significantly reduced by water extract of V. axillare. The expressions of TNF-αand ET-1 mRNA were also be inhibited by water extract of V. axillare.
Conclusion: Current evidences show water extract of V. axillare is effective for defending against ethanol-induced gastric mucosal lesions, significantly inhibiting the production of pro-inflammatory cytokines and the expressions of TNF-αand ET-1 mRNA, which may be useful for inhibiting apoptosis and improving local microcirculation.

Objective To evaluate the subclinical dysfunction of left ventricle (LV) induced by anthracycline(ATC) in patients with newly diagnosed diffuse large B-cell lymphoma (DLBCL) by two-dimensional speckle tracking echocardiography (2DSTE) as well as real-time three-dimensional echocardiography (RT3DE).Methods Traditional echocardiography images and RT3DE images were acquired from 59 patients with DLBCL before,after the completion of two cures(100 mg∕m 2)and four cures of the regimen(200 mg∕m 2).LV global longitudinal strain(GLS),global circumferential strain(GCS),LV apical rotation and basal rotation,LV end-diastolic volume (EDV),end-systolic volume (ESV),stroke volume(SV) and ejection fraction(EF)were calculated simultaneously.Results Compared with baseline, LV apical rotation and basal rotation reduced significantly after two cures and four cures of therapy [LV apical rotation:(5.34±1 .80)°vs (3.80±1 .45)°vs (2.96±1 .1 8)°;LV basal rotation:(-3.32±1 .14)°vs (-2.65±1 .12)°vs (-2.56±1 .19)°;both P <0.01].LV GLS and GCS decreased significantly till four cures of treatment compared with those at baseline[GLS:(-21 .62±2.5 1)% vs(-20.1 7±2.74)%;GCS:(-26.34±4.76)% vs (-23.27 ±4.73)%;both P <0.01].The alternation on EDV,ESV,SV and EF manifested no visible degradation during the whole procedure (P > 0.05 for all). Conclusions Cardiotoxicity during the early phase of anthracycline treatment can be detected via 2DSTE prior to the traditional echocardiographic expression of ventricular systolic function.The left ventricular rotation index seems to be more sensitive than strain parameters for the estimation of early cardiac injury in patients with ATC chemotherapy.There is no safe dose for anthracycline in all patients with DLBCL treated with anthracycline even at lower doses.

DNA barcoding and HPLC specific chromatogram were used to identify three kinds of Plumeria flowers respectively. DNAs extracted from the three Plumeria species were amplified by PCR with universal primers, and the psbA-trnH region was selected. All the amplified products were sequenced and the results were analyzed by MEGA 5.0. Chemometric methods including principal components analysis and hierarchical clustering analysis were conducted on the SAS 9.0 software to demonstrate the variability among samples. In conclusion, the psbA-trnH of all samples were successfully amplified from total DNA and sequenced. These three varieties of Plumeria can be differentiated by the psbA-trnH region and clustered into three groups respectively through building neighbor joining tree, which conformed to their germplasm origins. However, it was hard to distinguish them by HPLC specific chromatograms combined with chemometrics analysis. These indicated that DNA barcoding was a promising and reliable tool for the identification of three kinds of Plumeria flowers compared to HPLC specific chromatogram generally used. It could be treated as a powerful complementary method for traditional authentication, especially for those varieties which are difficult to be identified by conventional chromatography.

Objective To study the influence of irradiation on the osteoblast function by the gene expression changes of RANKL and OPG.Methods Bone marrow stromal cells were induced to develop into early and mature osteoblasts in vitro.The characterization of osteoblasts was indentified by ALP staining.The RANKL and OPG mRNA levels in early and mature osteoblasts, which exposed to 0 -4 Gy radiation were determined by RT-PCR.Results Bone marrow stromal cells had been induced to early and mature osteoblasts by osteoblast differentiation medium in vitro.In early stage of osteoblast, RANKL mRNA expression levels treated with 1Gy irradiation was 2.83-fold higher than those other irradiation dosage groups.The RANKL mRNA expression levels of each group in early stage of osteoblasts were significantly higher than those in the mature counterpart ( t = 8.34 - 103.57, P ＜ 0.05 ).The ratio of RANKL/OPG mRNA was obviously greater in early osteoblast compared with the mature cells ( t = 2.84 - 20.99, P ＜0.05 ), and it was the highest in 1Gy irradiation treated early osteoblast.Conclusions Radiation exposure of the early osteoblasts promotes osteoclasts function and results in the bone loss.

Objective To investigate the impact of myocardial contrast echocardiography (MCE) on evaluating the myocardial perfusion in beagles with ischemic cardiomyopathy and cardiac resynchronization therapy (CRT),and to estimate the myocardial perfusion by myocardial blood flow (MBF) value.Methods Twelve adult beagles were randomly divided into two groups (CRT group and non-CRT group).Each beagle underwent a ligature in the first diagonal branch and a pacemaker was implanted.The pacing was started in CRT group,but was not started in non-CRT group.MCE and speckle tracking imaging were performed to evaluate the MBF value and circumferential strain (Cir1 2SD),radial strain (R12SD) and longitudinal strain (L12SD) of 12 segments of left ventricle at baseline,before CRT,and 4 weeks after CRT.Results There was no significant difference of LVEF,LVEDV,LVESV,Cir12SD,and R12SD between two groups at baseline or before CRT( P ＞0.05).After 4 weeks of CRT,LVEF,LVEDV,LVESV,Cir1 2SD,and R 12SD in two groups were ( 58.8 ± 8.2 ) ％ vs (39.5 ± 8.7 ) ％,(28.2 ± 2.9) ml vs (34.2 ± 2.5 ) ml,( 13.9± 2.6 ) ml vs (21.5± 4.7)ml,(29.1 ± 6.6)ms vs (46.5 ± 10.1)ms and (36.1 ± 10.7)ms vs (67.6± 11.2)ms( P ＜0.05 ).A,β,and MBF value between two groups were ( 13.6 ± 2.2 )dB vs ( 14.9 ± 3.0)dB,(5.1±1.1 )s- 1 vs (4.8 ± 2.1 )s- 1,(67.6 ± 12.1)dB/s vs (72.8 ± 8.6)dB/s( P ＞0.05) at baseline and were (7.4 ± 1.2)dB vs (7.3±2.7)dB,(3.9±0.9)s-1 vs (2.9±0.9)s-1,(23.4±4.2)dB/s vs (22.2±4.1)dB/s (P＞0.05)before CRT.After 4 weeks of CRT,A,β,and MBF value in CRT group were higher than those in non-CRT group (12.1 ± 1.8)dB vs (9.5 ± 1.7)dB,(4.7 ± 0.3)s-1 vs (3.1 ± 0.8)s-1,(47.2 ± 8.6)dB/s vs (29.5 ±4.2)dB/s,all P ＜0.05).Conclusions In beagles with ischemic cardiomyopathy,CRT can not only improve cardiac synchrony,but also increase myocardial perfusion.