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Objective:To explore the role and effect of problem-based learning (PBL)-based scenario simulation teaching in the standardized residency training in the department of critical care medicine.Methods:A total of 48 residents who received standardized residency training in the Department of Critical Care Medicine of the First Affiliated Hospital of Soochow University from March 2019 to December 2019 were randomly divided into the experimental group and the control group, with 24 ones in each group. The experimental group used PBL-based scenario simulation teaching, while the control group adopted the traditional teaching. After the end of the teaching, the exam scores of the two groups were observed and compared. Then the questionnaire was used to analyze the differences of the results. SPSS 17.0 was used for t-test. Results:The scores of theoretical assessment (85.50±5.15) and skill assessment (82.38±5.64) in the experimental group were higher than those in the control group[(77.04±8.69) and (70.92±5.65)], and the differences were statistically significant ( P < 0.05). The experimental group was higher than the control group in improving learning interest and efficiency, improving clinical work ability, strengthening clinical thinking ability, improving teamwork ability, and improving doctor-patient communication ability, and the difference was statistically significant ( P < 0.05). Conclusion:The PBL-based scenario simulation teaching has more advantages over the traditional teaching and is worthy of promotion.
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Super-enhancers (SEs) are large clusters of enhancers located near the promoter and are necessary to determine the identity of cancer cells. The alterations of super-enhancers can cause dysregulation of the transcriptional program, which resulted in tumor cells being addicted to certain transcriptional programs. Tumor metastasis is the leading cause of death in cancer. Recently, SEs have been demonstrated to facilitate tumor metastasis by regulating lncRNA generation, tumor microenvironment, epithelial-mesenchymal transition, and cancer stem cells. In this review, the characteristics of SEs, the relationship between SEs and tumor metastasis, and inhibitors against SEs are summarized to provide a reference for the relevant mechanism of SEs regulating tumor metastasis and provide new perspectives for the diagnosis and treatment of patients with cancer metastasis.
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OBJECTIVE ：To est ablish the method for the determination of 20（S）-protopanaxadiol（PPD）concentration in human plasma. METHODS ：Plasma samples were precipitated with acetonitrile and determined by UPLC-MS/MS ，using finandrogen as internal standard. The determination was performed on Waters ACQUITY UPLC HSS T 3 column with mobile phase consisted of 5 mmol/L ammonium bicarbonate aqueous solution-acetonitrile （gradient elution ）at the flow rate of 0.4 mL/min. The column temperature was set at 40 ℃，and sample size was 10 μL. The ion source was electrospray ion source，and negative ion scanning was carried out with multiple reaction monitoring mode . The ion pairs used for quantitative analysis were m/z 459.40→ 375.20（PPD）and m/z 371.30→315.30（internal standard ）. At the same time ，the method was applied to the determination of clinical samples. RESULTS ：The linear range of PPD was 0.25-30.00 ng/mL（r＝0.999 2），and the limit of quantitation was 0.25 ng/mL. RSDs of intra-batch and inter-batch were all lower than 10％，and relative errors （RE）were －14.61％-12.69％. Extraction method and matrix effect did not affect the quantitative determination of PPD. In ginsenoside CK 100 mg group ，ginsenoside CK 200 mg group and ginsenoside CK 300 mg group ，mean cmax of patients with rheumatoid arthritis after oral administration of corresponding drugs were 18.06，30.03，27.00 ng/mL；median tmax were 12.0，6.0，12.0 h；mean AUC 0-t were 622.52，668.15， 1 155.97 ng·h/mL. CONCLUTIONS ：The method for the determination of PPD concentration in human plasma is successfully established. The method is sensitive ，accurate， kq1907011） stable，easy to operate and less plasma consumption. It can be used for the quantitative determination of clinical samples.
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Objective@#To investigate the clinical characteristics of extremely severe burn patients complicated with severe inhalation injury caused by dust explosion.@*Methods@#The medical records of 13 extremely severe burn patients complicated with severe inhalation injury in August 2nd Kunshan factory aluminum dust explosion accident, who were admitted to the First Affiliated Hospital of Soochow University on August 2nd, 2014, were retrospectively analyzed. The following indicators were collected: (1) Acute Physiology and Chronic Health Evaluation Ⅱ (APACHE Ⅱ) score and Sequential Organ Failure Assessment (SOFA) score at post admission hour (PAH) 24. (2) Prognosis, death time, causes of death, and the mortality of patients with different sexes. (3) The number of times of airway electronic bronchoscopy, airway characteristics, and the corresponding onset time. (4) The number and result of microorganism culture of lesion tissue during the leukoplakia formation stage. Detection of Pseudomonas aeruginosa in patients with and without leukoplakia in airway mucosa. Fisher′s exact probability test was used to detect the mortality of patients with different sexes. Kappa test was used to detect the relevancy between leukoplakia and Pseudomonas aeruginosa.@*Results@#(1) The APACHE Ⅱ score of patients of this group at PAH 24 was (19±3) points, and the SOFA score was (12±3) points. (2) Eight patients survived, while 5 patients died, and the time of death was 19-46 (34±10) d after injury. The main cause of death was multiple organ dysfunction syndrome, which was secondary to severe infection. One of the 7 male patients and 4 of the 6 female patients died, but there was no significantly statistical difference in mortality between patients of the two sexes (P>0.05). (3) Airway electronic bronchoscopy was performed 4-25 (10±5) times among patients of this group. Hyperemia and edema were found in the airway mucosa of all the 13 patients 2-3 weeks after injury; ulcer was found in the airway mucosa of 5 patients 2-4 weeks after injury; leukoplakia was found in the airway mucosa of 7 patients 4-14 weeks after injury; granulation formed in the airway mucosa of 7 patients 10-15 weeks after injury, and airway patency was affected, which was solved after local clamping or replacement of lengthened tracheal cannula. (4) During the leukoplakia formation stage, 19 cases of microorganism culture were performed basing on airway lesion tissue, and the results were 15 cases of Pseudomonas aeruginosa, 5 cases of Acinetobacter baumannii, 2 cases of Serratia marcescens, as well as 1 case of Stenotrophomonas maltophilia, Burkholderia cepacia, and Proteus mirabilis each. Among 7 patients with airway mucosa leukoplakia, 6 patients were detected with Pseudomonas aeruginosa. Among 6 patients without airway mucosa leukoplakia, 1 patient was detected with Pseudomonas aeruginosa. The appearance of leukoplakia was consistent with the detection of Pseudomonas aeruginosa (Kappa=0.69, P<0.05).@*Conclusions@#Most of these extremely severe burn patients complicated with severe inhalation injury caused by dust explosion survived, and there was no significant gender difference in mortality. Electronic bronchoscopy showed that the early manifestations of airway mucosa were hyperemia and edema, followed by varying degrees of erosion, ulcer, leukoplakia, and granulation formation, etc. Leukoplakia may be relevant to Pseudomonas aeruginosa infection.
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Objective:To evaluate skin irritation,acute toxicity,and allergy of medical ozone oil for clinical application.Methods:In contrast to their left and right side irritation,one or more skin irritation tests were performed on the intact and damaged skins of guinea pigs.With the maximum concentration,acute skin toxicity test was applied on the intact and damaged skins of rats.Active cutaneous anaphylaxis was applied to the guinea pigs.Results:High concentration (ozone consumption:150 g/L) of medical ozone oil showed a slight irritation on the broken skin of guinea pigs,while low concentrations did not show skin irritation.Medical ozone oil had no obvious acute toxicity to rats.The medical ozone oil and base oil showed mildallergy for the skin of guinea pig.Conclusion:The irritation of medical ozone oil is related to its concentration.With appropriateconcentration and duration of treatment,medical ozone oil is safe.
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Objective To detect the small molecular metabolite profiles of urine from patients with acute pancreatitis (AP) in different severity,and screen the differential metabolites that have potential diagnostic value for AP and its severity.Methods Urine samples were collected from 65 AP patients (MSAP and SAP 29,MAP 36) in the First Affiliated Hospital of Soochow University,and 25 healthy volunteers served as controls.The liquid chromatograph mass spectrometer (LC-MS) combined method was used to detect urine small molecule metabolites of AP patients and healthy controls.Multivariate statistical analysis was used to establish and validate the principal component analysis (PCA) model and partial least squares discriminate analysis (PLS-DA) model to select the differential metabolites.Results PCA model had a good degree of interpretation (R2X ＞0.5),and each group of urine samples showed a good distinction between clustering trends,and good classification models were obtained.In the PLS-DA model,the differences among groups were further highlighted,and samples of each group showed distinct differentiation between clusters,with high predictability (Q2 ＞ 0.7).The model was reliable and effective indicated by the PLS-DA permutation test.17 differential metabolites were screened out by comparing AP with control.A diagnostic model constructed with 7 differential metabolites including nonanedioic acid,succinic acid semialdehyde,D-beta-hydroxy butyric acid,acetylcarnitine,angelic acid,sebacic acid and hippuric acid had a high diagnostic value for AP,with the sensitivity of 100％ and the specificity of 94％.Then control,MAP and MSAP + SAP group were compared with each other,and it was found that the model integrating urine succinic acid semialdehyde,angelic acid,D (-)-beta-hydroxy butyric acid,malic acid and acetylcarnitine had a good diagnostic value for SAP,with the sensitivity and specificity of both 90％.Conclusions LC-MS metabolomics can effectively identify the changes of urine metabolism in patients with different severity of AP.The screened differential metabolites have the potential clinical value in the diagnosis and classification of AP.