ABSTRACT
ObjectiveTo understand the concentration of heavy metal cadmium and cadmium in portunus and mantis shrimp， and to timely identify food safety problems and potential hazards. MethodsPortunus and mantis shrimp samples from different provinces were collected and categorized based on different regions and locations， and some samples were made from tissue parts. Graphite furnace atomic absorption spectrometry was used to detect cadmium items， the cadmium exposure of portunus and mantis shrimp was evaluated simultaneously ResultsThe detection rate of cadmium in 124 batches of portunus sold in Shanghai was 100% （124/124）， the detection rate of cadmium in 63 batches of mantis shrimp sold in the market was also 100% （63/63）. The cadmium content varied in different tissue parts， and the cadmium enrichment in hepatopancreas was the highest in the edible parts of portunus and mantis shrimp. The average detection value， 50th percentile value， 95th percentile value of cadmium in the hepatopancreas of portunus accounted for 52.64%， 49.28% and 98.65% of the PTMI， respectively. The average detection value， 50th percentile value and 95th percentile value of cadmium in the hepatopancreas of mantis shrimp accounted for 30.76%， 32.04% and 46.16% of the PTMI， respectively. ConclusionThe average residual levels of heavy metal cadmium in portunus and mantis shrimp are within the safe range.
ABSTRACT
Objective:To produce 161Tb from enriched 160Gd 2O 3 isotope-enriched target material and realize domestic production of the novel medical isotope 161Tb. Methods:The 160Gd 2O 3 isotope-enriched target material was irradiated with neutrons by the China Mianyang Research Reactor (CMRR). The no-carrier-added 161Tb product was obtained after the processes of target broken, sample dissolution, separation and purification with lanthanide (LN) resin and solution replacement with diglycolamide (DGA) column. Various key indicators such as γ spectral purity, metal impurity content, specific activity, radiochemical purity, and radioactive concentration were used to conduct the quality inspection and the control of 161Tb products. Results:161TbCl 3 of 33.4 GBq was obtained in a single time with the radioactive concentration of 16.8 GBq/ml, nuclear purity more than 99.9%, and radiochemical purity of 99.2%. Metal impurity content was met the established standards, with the specific activity of 6.02×10 17 Bq/mol. The radiochemical purities of 161Tb labeling with 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid- D-Phe1-Tyr3-Thr8-octreotide (DOTATATE) after 0 and 72 h were 100% and 95.8% respectively. Conclusion:The preparation of no-carrier-added 161Tb by using LN resin has the advantages of high separation performance and high sample loading, which has great significance in the field of medical isotope preparation and lays a good nuclide guarantee for the research and development of domestic 161Tb-labeled drugs.
ABSTRACT
ObjectiveTo determine the risk factors associated with colorectal adenoma among the residents in Nanchang city， and provide scientific evidence for primary preventive measures against colorectal cancer. MethodsA matched case-control study was conducted. A total of 155 patients newly diagnosed with colorectal adenomas during 2018‒2019 were selected as cases， and 155 healthy persons attending the screening as controls. Both the case group and control group completed the questionnaires on the risk factors. Conditional logistic regression analysis was performed using SPSS 25.0. ResultsAge， gender， and educational level were used for match between case group and control group. Conditional multivariate logistic regression analysis showed that salted and dried food intake（OR=5.634， 95%CI：1.308‒24.256）， smoking（OR=3.266， 95%CI：1.419‒7.518）， passive smoking（OR=3.125，95%CI：1.415‒6.898）， and hyperlipidemia（OR=3.975， 95%CI：1.643‒9.618）were associated with higher risk of colorectal adenoma. In contrast， coarse grain intake ≥500 g/week（OR=0.377， 95%CI：0.177‒0.805） was a protective factor. ConclusionColorectal adenoma may be caused by multiple risk factors， particularly salted and dried food intake， smoking， passive smoking and hyperlipidemia. It warrants specific intervention to reduce the risk of colorectal adenoma.
ABSTRACT
Objective To preliminarily investigate the methods,safety and short to medium-term effectiveness of the interventional ultrasound applying in the hybrid procedure to treat the thrombosis of arteriovenous graft(AVG).Methods Twenty patients with the thrombosis of AVG,who received the hybrid procedure defined as Fogarty catheter thrombectomy and percutaneous transluminal angioplasty (PTA) guided by the ultrasonography,were retrospectively investigated. The display effects of the ultrasonography were observed.The technical and clinical success rates were evaluated.All the cases were followed up every 3 months for at least 1 year to evaluate the post-interventional assisted primary patency and the post-interventional secondary patency.Results All the processes were clearly displayed and well guided by the interventional ultrasound during the procedure.The technical and the clinical success rates were both 100%.No major complications were recorded.The post-intervention assisted primary patency rate was 100%,92.9%,85.7%,71 .4% at 3,6,9,12 months,respectively.The post-intervention secondary patency was 100%,100%,89.5%,89.5% at the correspondent months.Conclusions This pilot research shows the hybrid procedure guided by the interventional ultrasound to treat the thrombosis of AVG has high success rate and satisfied patency in short to medium-term.The interventional ultrasound is an effective, safe and convenient guiding method to the hybrid procedure,and has the value for clinical application.
ABSTRACT
Objective To summarize the manifestation of pediatric eosinophilic gastroenteritis by ultrasound and discuss the diagnostic value of ultrasonography in pediatric eosinophilic gastroenteritis. Methods The ultrasonic appearances of 31 cases of pediatric eosinophilic gastroenteritis confirmed by clinics and pathology were reviewed and analyzed. Results Nineteen of 31 cases were observed in association with eosinophilic infiltration of other organs which were diagnosed as idiopathic hypereosinophilic syndrome.Eosinophilic cystitis was the most common among the complications(89.4%,17/19).Twelve of 31 cases were diagnosed as eosinophilic gastroenteritis without complications.The endoscopic appearances of eosinophilic gastroenteritis were nonspecific which include erythematous,hyperemia edema,and partiality erosion changes.Endoscopy demonstrates increased numbers of eosinophils in the propria of stomach and the duodenum.Ultrasound features of the gastroenteritis appeared diffuse or the parts of gastrointestinal tract.The most common sites of eosinophilic gastroenteritis were the stomach and duodenum.Involvement of muscle layer and serosal layer showed wall thickening of cyclic annular and uniformity.Ultrasound might show nodular or irregular thickening of the folds in the gastric antrum when the submucosa were thickening.The mucosal layer involvement was not easy to be found by ultrasound.The echo of serous layer and submucosa associated with the disease stage.The thickening of surrounding omentum and mesenteric tissue,echo enhancement and nonspecific hyperplastic mesenteric lymph nodes infiltrated with eosinophils might be present.Eosinophilic ascites could often be detected.Conclusions Ultrasound has obvious advantages in the diagnosis of pediatric eosinophilic gastroenteritis,and the ultrasonic changes of pediatric eosinophilic gastroenteritis are characterized.Ultrasonography can provide the possible diagnosis when combined with inflammatory of other organs,especially cystitis inflammatory changes.
ABSTRACT
Objective To explore the effect of continuous aspiration of subglottic secretion at different negative pressure levels on mechanical ventilation. Methods Toally 142 patients were randomized by way of lottery into the control group (n=70) and the experiment group ( n = 72 ): the control group received continuous negative pressure aspiration of subglottic secretion at a negative pressure of 60 mmHg while the experiment group did 30~40 mmHg for grade I of the sticky secretion , 40~60 mmHg for gradeⅡ~Ⅲof the sticky secretion, respectively. The two groups were compared in terms of the rate of ventilator associated pneumonia (VAP), airway mucosal injury and cough. Result There was no significant difference in the rate of ventilator associated pneumonia (P>0.05), but the rates of airway mucosal injury and cough were lower in the experiment group than those of the control group (P < 0.05). Conclusion It is reasonable to choose different negative pressure levels based on stickiness of the secretions for mechanical ventilation, for it can prevent the ventilator associated pneumonia and airway mucosal injury.
ABSTRACT
This paper first analysis of hospital library in the present situation of the literature resources construction and utilization of the network environment that includes Literature resource management modernization,Extensive use of electronic resources,Information isolated island phenomenon seriously,inaccurate Localization of library self role et.Based on the above analysis,the author puts forwards some suggestions in Hospital library information resource integration and utilization.
ABSTRACT
Objective To probe into the role of nursing classification and marking management in ICU nursing management. Methods According to the admission date,the first 87 patients hospitalized in our department were assigned into the control group and another 84 into the intervention group.Then the human resources were divided based on the ABCD nursing classification and marking management for ICU.The two groups were compared in terms of adverse events.Results The incidences of pressure sores, non-planned extubation,improper clinostatism for using respirator,hypoglucycaemia during reinforced treatment with insulin, respirator-associated pulmonary pneumonia,tube-associated infection,and multidrug resistant bacteria in the intervention group were all significantly lower than those in the control group (allP<0.05).Conclusion The nursing classification and marking management for ICU nursing management can enhance the nursing quality.
ABSTRACT
This paper analyzes library users' satisfaction about service quality of the library of Peking University School and Hospital of Stomatology.The main factors associated with users' satisfaction are discussed.In the end,it proposes a series of effective measures to promot library service quality.
ABSTRACT
Objective To investigate the renoprotective effects of KB-R7943 on renal injury induced bycontrast media. Method Tubular epithelial cells were trested with varions cencentration of KB-B7943 (10-5,10-6 mol/L) for 12 hours before contrast media was used. After cells we, re incubated with contrast media (CM)(110 mgI/L) for 1 hour, cells injury was assessed by using LDH, and cell morphologic changes and cells apopto-sis were evaluated with inverted microscope and flow cytometry, respoelively. Intracellular Ca2+ and reactive oxy-gen species (ROS) were analyzed by using confocal microscope. The expression of Na+/Ca2+exchanger mRNAwas evaluated by RT-PCR. Mannitol with same osmolarity (20% mannitol, 770 mOsm/L) of CM was used as con-trol. One-way analysis of variance and q-test were used for comparison between groups. The simple linear correla-tion was employed to analyze the correlation. P < 0.05 was considered significant. Results Contrast media sig-nificantly induced tubular cells damage significantly and apoptosis at 1 hour after incubation, meanwhile, intracel-lular Ca2+ and ROS were inoreased progressively in CM group. KB-R7943 significantly attenuated cells damage andapoptosis in dose-dependent in association with decreased intracellular Ca2+ and ROS. Expression of Na+/Ca2+exchanger mRNA was not changed. Conclusions KB-R7943 has renoprotective effects on the contrast-media-in-duced renal tubular cyotoxicity