The compounds (8R23, 9R221 , 9R6222, 10R221 , H1105) extracted from the soft coral, with unsaturated lactone, showed antitumor effect on EAT, IC50 was 18. 6,85. 8,67. 8,3d. 9, 3.05umol. L-1, respectively; IC50 on S180 was 10. 7,44. 4,30. 9,9. 95,2. 4umol. L-1, respectively. 8R23, 10R221 obviously increased the level of cAMP in the EAT cell. 8R23, 10R221 , III 105 also inhibited DNA synthesis of the EAT cell.These results indicated that these compounds might have antitumor effect, but the mechanism was unknown.

Objective To elevated the decontam ination properties of commercial nanoscale metal oxides against chemical warfare agents (CWA), and provide more foundation for the satisfactory materials of CWA decontamination. Methods Some nanocrystals of commercial metal oxides such an MgO, TiO2, ZnO and zinc nickel ferrite compound had been chosen to compare their decontamination properties. The nanocrystals were mixed with three representative compounds, sulfur mustard (HD), soman (GD) and S-(2-diisopropylaminoethyl) O-ethyl methylphosphonothioate (VX) at room temperature and natural light. The analogous experiments were conducted without addition of nanocrystals as negative control. After a fixed time, the samples were then analyzed by the methods of T-135, Schoeneman reaction and conversion method to determine the content of CWA. The decontamination properties of nanocrystals were compared with negative control. Results The chosen nanoscale metal oxides excepted nanoscale MgO had good decontamination properties against HD, and they all could decontaminate GD quickly. Nanoscale TiO2 had superior decontamination properties against GD and HD. At the room temperature and natural light, HD was completely decontaminated within 20 hours and GD was completely decontaminated within 4 hours by nanoscale TiO2. The nanocrystals of metal oxides didn′t decontaminate VX effectively. Compared to the activated clay group, nanoscale MgO had superior decontamination properties against VX over other nanocrystals (P<0.05), but the percentage of degradation was lower than 20% within 7 h. Conclusion The chosen nanoscale TiO2 has superior decontamination properties against GD and HD than others in natural condition, but it isn′t a promising agent for the decontamination of VX.

Objective To summarize the perioperative clinical effect of extracorporeal membrane oxygenation (ECMO) technique in bilateral lung transplantation of patients with idiopathic pulmonary arterial hypertension.Methods Of 18 recipients with idiopathic pulmonary arterial hypertension receiving double lung transplantation,there were 11 cases of 11 grade Ⅲ (WHO cardiac function ratings) and 7 cases of grade Ⅳ.All patients were given ECMO technique after anesthetic induction,and the speed and volume of ECMO were adjusted according to oxygenation and cardiac function.At the end of the operation,the ECMO flow rate was decreased to 1 L·min-1 ·m-2.If the hemodynamics was stable and the oxygenation index was above 300,the ECMO could be removed.All data were Collected at 7 time points (preoperation,30 min after two lung ventilation,15 min after ECMO,the establishment of one lung ventilation,30 min after pulmonary artery occlusion,30 min after pulmonary artery open and at the end of the operation).The prognosis of the recipients was observed postoperatively.Results All patients successfully completed operation under the support of ECMO technique.As compared with preoperation,PaO2 and PaCO2 were significantly increased at 30 min after two lung ventilation (P＜0.05).As compared with 30 min after two lung ventilation,PaO2 was significantly elevated (P＜0.05),PaCO2 and PAP were reduced at 15 min after ECMO (P＜0.05).As compared with 15 min after ECMO,PAP was significantly increased at 30 min after pulmonary artery occlusion (P＜0.05).As compared with 30 min after pulmonary artery occlusion,PAP was significantly reduced at 30 min after pulmonary artery open (P ＜ 0.05).ECMO of 3 patients was removed after operation at once and of 15 patients were not removed until 3.3 ± 2.5 days in ICU.Tencases suffered from left cardiac insufficiency to varying degrees after removing ECMO (including 3cases whose ECMO was removed at once after operation),3 of them received ECMO bypass again and 7 of them were relieved after administration of cardiotonic,diuretics and vasodilators.Two cases sufferred from wound fat liquefaction and infection and 2 cases had moderate femoral artery thrombosis after postoperative ECMO.One case had renal failure 5 days after operation and thereafter died of multiple organ failure 2 weeks later after treatment with the continuous ECMO pipelines of hemofiltration,then 17 cases were cured.The pulmonary arterial pressure of all recipients was (30.79 ± 6.18) mmHg 2 months after operation and the cardiac function rating was significantly increased (P ＜0.01).Conclusion The application of ECMO technique in the lung transplantation patients with idiopathic pulmonary hypertension can reduce the pulmonary arterial pressure,improve the safety of operation and has obvious auxiliary effect on the perioperative cardiac function.

Objective To establish a method of quick three-dimensional (3D) reconstruction of pubic symphysis based on magnetic resonance imaging. Methods The pelvis images of adult male were generated on a 3.0 T scanner using a T1 Gradient Echo FLASH-3D (T1- FL3D) sequence and imported the images into medical image control system. Segmentation of binaryzation threshold was conducted and pelvic soft tissue image was extracted by regional growth, 3D structure model of pubic symphysis was obtained by Boolean operation. The 3D structure model of pubic symphysis was established by the noise reduction of reverse engineering software. And compared with the 3D reconstruction model pubic bone CT scan. Results The morphological characters of the MRI pubic symphysis 3D model, such as the ridges and furrows on the symphysial surface, lower extremity, dorsal margin (beveling), margin (beveling) and pubic tubercle, were highly consistent with the morphological characters of the 3D model established by CT scan. Conclusion MRI scan can be used to reconstruct the 3D structure of pubic symphysis quickly and effectively, and it can provide a safe radiation-free 3D visualization imaging technique for forensic age estimation for the living.

Objective:To evaluate the effect of astaxanthin on neuropathic pain in rats and the role of spinal heme oxygenase-1 (HO-1).Methods:Seventy-two SPF-grade healthy adult male Sprague-Dawley rats, weighing 200-250 g, in which intrathecal catheters were successfully implanted, were divided into 6 groups ( n=12 each) by a random number table method: blank control group (group C), sham operation group (Sham group), neuropathic pain (NP) group, NP plus dimethyl sulfoxide (DMSO) group (NP + DMSO group), NP plus astaxanthin group (NP + AST group) and NP plus zinc protoporphyrin plus astaxanthin group (NP+ ZnPP+ AST group). NP was induced by chronic constriction injury in anesthetized rats.In Sham group, the sciatic nerve was only isolated without ligation.At 5 days after establishing the model, 0.5% DMSO 10 μl was intrathecally injected in NP+ DMSO group, astaxanthin 1 μg (dissolved in 10 μl DMSO) was intrathecally injected in NP+ AST group, HO-1 inhibitor zinc protoporphyrin 24 μg (dissolved in 10 μl DMSO) was intrathecally injected, and 3 h later astaxanthin 1 μg (dissolved in 10 μl DMSO) was intrathecally injected in NP+ ZnPP+ AST group.Injection was given once a day for 10 consecutive days in the 3 groups mentioned above.The mechanical paw withdrawal threshold (MWT) and thermal paw withdrawal latency (TWL) were measured at 1 day before establishing the model and 3, 7 and 14 days after establishing the model.The rats were sacrificed at 14 days after establishing the model, and the L 4-6 lumbar segments of the spinal cord were removed for determination of the contents of tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β), superoxide dismutase (SOD) and glutathione peroxidase (GHS-PX)(by enzyme-linked immunosorbent assay) and expression of HO-1 (by Western blot). Results:Compared with group C and group Sham, the MWT was significantly decreased and TWL was shortened at each time point after establishing the model, the contents of TNF-α and IL-1β were increased, and the expression of HO-1 was up-regulated in the other four groups, the SOD and GSH-PX contents were significantly decreased in NP group, NP+ DMSO group and NP+ ZnPP+ AST group, and the SOD and GSH-PX contents were significantly increased in NP+ AST group ( P<0.05). Compared with NP group, the MWT was significantly increased and TWL was prolonged at 7 and 14 days after establishing the model, the contents of TNF-α and IL-1β were decreased, and the expression of HO-1 was up-regulated in NP+ AST group, the expression of HO-1 was down-regulated in NP+ ZnPP+ AST group ( P<0.05), and no significant change was found in the parameters mentioned above in NP+ DMSO group ( P>0.05). Compared with NP+ AST group, the MWT was significantly decreased and TWL was shortened at 7 and 14 days after establishing the model, the contents of SOD and GSH-PX were decreased, the contents of TNF-α and IL-1β were increased, and the expression of HO-1 was down-regulated in NP+ ZnPP+ AST group ( P<0.05). Conclusion:Astaxanthin can reduce NP in rats, and the mechanism is related to up-regulating the expression of HO-1 in the spinal cord and inhibiting oxidative stress and inflammatory responses.

Objective To explore the effect of pravastatin on carotid atherosclerosis in the patients with type 2 diabetes mellitus (T2DM) complicating hypertension.Methods One hundred and six patients.with T2DM complicating hypertension treated in this hospital from April 2015 to April 2016 were selected and divided into the conventional treatment group (n=52) and pravastatin group (n=54).The patients of conventional treatment group were given the conventional therapy of diet control,reducing blood glucose,controlling hypertension,symptomatic and support treatment,while on the basis of conventional therapy the patients of pravastatin group were added with pravastatin.The carotid intima-medial thickness (IMT),detection rate of carotid atherosclerotic plaque and carotid plaque score were measured by ultrasound before and after the treatment in all cases.Meanwhile the levels of serum lipid and hyper sensitive C reactive protein (hs-CRP) were determined.Results The above indicators in the conventional treatment group had no statistically significant difference between before and after treatment (P＞0.05),but the IMT value,detection rate of carotid atherosclerotic plaque and carotid plaque score after treatment in the pravastatin group were decreased compared with before treatment,the levels of serum total cholesterol (TC),triacylglycerol (TG),low density lipoprotein cholesterol (LDL-C) and hs-CRP were also significantly reduced compared with before treatment,the differences were statistically significant (P＜0.05),moreover the above indicators after treatment in the pravastatin group were remarkably lower than those in the conventional treatment group (P＜0.05).There was no statistically significant difference in the incidence rate of adverse reactions between the two groups (P＞0.05).Conclusion Pravastatin can effectively and safely improve the carotid atherosclerosis degree in the patients with T2DM complicating hypertension.

Objective:To explore the safety and nosocomial infection control measures of COVID-19 patients of end-stage respiratory failure after lung transplantation.Methods:Lung transplantation was performed for a COVID-19 patient with end-stage respiratory failure after a negative conversion of 2019-nCoV nucleic acid. Before operation, all medical staff received simulated training on nosocomial infection. The procedures were performed in an operation room with a negative pressure environment. The three-grade preventive strategy was implemented and wearing positive pressure protective mask of electric air supply required. During operation, the patient was managed according to the in-hospital protection process. The environment and medical instruments were disinfected after operation.Results:The operation was completed successfully. The 2019-nCoV nucleic acid test was negative for many times after operation. Participants were placed in medical isolation for 14 days after surgery. During the period, nucleic acid test was negative twice.Conclusions:As an exploratory treatment, lung transplantation is a safe option for end-stage respiratory failure in COVID-19 in operation room with a negative pressure environment and implementations of three-grade preventive strategy.

Objective:To explore the early prognosis on patient of idiopathic pulmonary fibrosis (IPF) combined with different degrees of pulmonary arterial hypertension (PAH) undertake lung transplantation (LTx).Methods:From January 2017 to December 2020, the clinical data of 134 patients with IPF who underwent LTx in Wuxi People's Hospital were analyzed retrospectively. According to the average pulmonary artery pressure detected by right cardiac catheter before operation, the patients were divided into mild PAH group (63 cases), moderate PAH group (47 cases) and severe PAH group (24 cases). The donor data and the recipient's preoperative, intraoperative and postoperative data were collected; the postoperative survival curve to analyze early survival among the three patient groups.Results:With the increase of pulmonary artery pressure, the rate of abnormal right ventricular function increased, the end diastolic diameter of left ventricle decreased before operation, and the rate of using veno-arterial extracorporeal membrane oxygenation (V-A ECMO) increased during the surgery ( P<0.05). Multivariate analysis found that combined severe PAH had significant effects on primary graft dysfunction (Primary graft dysfunction, PGD), retracheal intubation or tracheotomy, hypovolemic shock within 72 h, and 6-month survival after LTx. The survival surve showed that 30-day survival rates of patients with IPF complicated with mild, moderate and severe PAH were 85.7%, 80.8% and 66.7% respectively, and the 6-month survival rates were 80.9%, 74.0% and 62.2%, respectively. Conclusion:Patient of IPF combined with different degrees of PAH had a significant impact on cardiac function and intraoperative ECMO selection of LTx, and severe PAH could significantly reduce the early survival rate after LTx.

The teaching of radiology in standardized residency training needs a large number of case data to strengthen the subjective understanding and awareness of residents. The database built by residency training bases can meet the needs of teaching to a certain extent, but the conditions of training bases vary across regions, which makes it difficult to achieve homogeneity in the teaching of radiology. This article discusses the application of Eurorad database in the teaching of radiology in standardized residency training. This database is free of charge, reliable, and comprehensive and provides a large number of free reliable cases and images for teaching, covering both common and rare diseases. Moreover, it can also be used to cultivate the English ability and comprehensive quality of residents and help to establish a hierarchical training system for radiology and non-radiology residents, thereby promoting the improvement in the quality of standardized residency training. This article shows the potential value of Eurorad database in the teaching of radiology in standardized residency training, and comparative studies are needed in the future to further prove its effectiveness.

OBJECTIVE To study the pharmacokinetics of Esketamine hydrochloride nasal spray in rats and ciliary toxicity to maxillary mucosa of bullfrog. METHODS The plasma concentration of esketamine hydrochloride in rats was determined by LC-MS/ MS after intravenous injection of esketamine hydrochloride solution and nasal administration of esketamine hydrochloride； the pharmacokinetic parameters were calculated by using Phoenix WinNonlin 8.1.0 software. Using the maxillary mucosa of isolated bullfrog as a model， the morphological changes of maxillary mucosa were investigated， and the duration and recovery of ciliary oscillation were recorded after nasal administration of esketamine hydrochloride. RESULTS The peak of blood concentration occurred 2 min after nasal administration of esketamine hydrochloride； cmax was （814.58±418.80） ng/mL， AUC0－∞ was （203.75± 92.76） ng·h/mL， and the absolute bioavailability was 60.68%. After nasal administration of esketamine hydrochloride， it was observed that the cilia of bullfrog were arranged neatly， the edges were clear， the cilia tissue structure was complete and the cilia moved actively. The cilia movement time was （178.17±13.30） min for the first time， and after the cilia moved again， the ciliary movement time measured again was （24.50±9.19）min with a relative movement percentage of 53.56%. CONCLUSIONS Esketamine hydrochloride nasal spray has a rapid onset of action， high bioavailability， and low ciliary toxicity.