Objective The aim of this study was to investigate the impact and mechanisms of emodin on oxidative stress response in lipopolysaccharide(LPS)-induced murine mononuclear macrophages(RAW264.7).Methods Involved the use of LPS,RAW264.7 cells,and emodin.Experimental groups included a control group,LPS(1 μg/mL)group,and LPS(1 μg/mL)+emodin(15 μmmol/L)pretreatment group.Aldehyde malondialdehyde(MDA)content,intracellular reactive oxygen species(ROS)levels,and silent information regulator 2(Sirt2)expression were evaluated at 6,12,and 18 hours after LPS exposure.Additionally,RAW264.7 cells were pretreated with Sirt2 inhibitor AGK2(20 μmol/L)followed by LPS stimulation,and the above-mentioned parameters were assessed at 6 hours.Results Compared to the control group,MDA content,ROS levels,Sirt2 mRNA,and protein expression in RAW264.7 cells in the LPS group increased at all time points(all P<0.05).At 6 and 18 hours,MDA content and ROS levels in RAW264.7 cells in the LPS+emodin group decreased significantly(all P<0.05),while at 12 hours,ROS levels were lower in the LPS group compared to the LPS+emodin group(P<0.05).Sirt2 mRNA and protein levels significantly increased at all time points(all P<0.05)compared to the LPS group.In the LPS+emodin+AGK2 group,Sirt2 mRNA and protein levels decreased,and MDA content and ROS levels increased compared to the LPS+emodin group(all P<0.05).Conclusion LPS-induced oxidative stress in RAW264.7 cells and emodin attenuate LPS-induced oxidative stress in RAW264.7 cells through Sirt2.

Objective To predict the structure and antigenic epitope of the Strongyloides stercoralis serine protease inhibitor 1 (Ss-SRPN-1) protein using bioinformatics tools, and to construct prokaryotic expression plasmids for expression of recombinant Ss-SRPN-1 protein, so as to provide the basis for unraveling the function of the Ss-SRPN-1 protein. Methods The amino acid sequence of the Ss-SRPN-1 protein was downloaded from the NCBI database, and the physicochemical properties, structure and antigenic epitopes of the Ss-SRPN-1 protein were predicted using bioinformatics tools, including ExPASy, SWISS-MODEL and Protean. Primers were designed according to the nucleotide sequences of Ss-SRPN-1, and the Ss-SRPN-1 gene was amplified, cloned and sequenced with genomic DNA extracted from the infective third-stage larvae of S. stercoralis as a template. The Ss-SRPN-1 protein sequence was cloned into the pET28a (+) expression vector and transformed into Escherichia coli BL21 (DE) cells for induction of the recombinant Ss-SRPN-1 protein expression. The recombinant Ss-SRPN-1 protein was then purified and identified using Western blotting and mass spectrometry. Results Bioinformatics analysis showed that the Ss-SRPN-1 protein, which was composed of 372 amino acids and had a molecular formula of C₁₉₄₈H₃₀₄₆N₄₈₈O₅₇₅S₁₆, was a stable hydrophilic protein, and the subcellular localization of the protein was predicted to be extracellular. The Ss-SRPN-1 protein was predicted to contain 11 dominant B-cell antigenic epitopes and 20 T-cell antigenic epitopes. The Ss-SRPN-1 gene with a length of 1 119 bp was successfully amplified, and the recombinant plasmid pET28a (+)/Ss-SRPN-1 was constructed and transformed into E. coli BL21(DE) cells. The expressed recombinant Ss-SRPN-1 protein had a molecular weight of approximately 43 kDa, and was characterized as a Ss-SRPN-1 protein. Conclusions The recombinant Ss-SRPN-1 protein has been expressed successfully, and this recombinant protein may be a potential vaccine candidate against strongyloidiasis.

Objective:To evaluate the effect of continuing health management on type 2 diabetes mellitus based on WeChat platform by Meta-analysis.Methods:Clinical randomized controlled trials connected with WeChat continuing health management for type 2 diabetes was searched by database including China Knowledge Network, Wanfang, Weipu, PubMed, Elsevier Science Direct, CINAHL, Web of Science, Cochrane Library. Cochrane bias risk assessment tool was used for evaluating the methodological quality of the included literatures. Meta-analysis of the data extracted from the included literature was performed by RevMan5.2 statistical software to assess heterogeneity of the outcome indicators and extract value of mean difference ( MD) and odds ratio ( OR). Results:A total of 1 133 patients with type 2 diabetes from 9 researches were enrolled in the study. The results showed that the WeChat continuing health management group had statistically significant differences in levels of fasting blood glucose ( MD value was -0.98, 95% CI -1.14 - -0.83, P<0.01), postprandial blood glucose ( MD value was -1.27, 95% CI -1.56 - -0.97, P<0.01), glycated hemoglobin ( MD value was -0.69, 95% CI -0.82 - -0.56, P<0.01), total cholesterol ( MD value was -0.54, 95% CI -0.65 - -0.44, P<0.01), triglyceride ( MD value was -0.50,95% CI -0.67 - -0.32, P<0.01) and low-density lipoprotein ( MD value was -0.52, 95% CI -0.74 - -0.30, P<0.01) compared with the control group. Conclusions:WeChat continuing health management intervention can effectively control the blood sugar and blood lipid levels of patients with type 2 diabetes mellitus and improve their self-management ability. For the deficiencies of little included references, the result still required a large-sample and high-quality randomized controlled trials to enhance accuracy.

CDIO is a new education model composed of Conceive, Design, Implement and Operate modules. In order to meet the needs of social development, this paper discusses the construction of the training system of applied innovative talents in ophthalmology of integrated traditional Chinese and western medicine guided by CDIO concept. Combing with practice, this paper puts forward teaching reform strategies from such five aspects as teaching purpose, curriculum system, construction of the teaching team, evaluation system, and practice effect, providing a new thought for the cultivation of applied innovative talents in ophthalmology.

Objective:To discuss the feasibility of offering specialized courses of critical care medicine in undergraduate clinical medicine education, so as to alleviate the shortage of critical care medicine staffs and lay a foundation for improving the success rate for the treatment of critical cases.Methods:The undergraduates majoring in clinical medicine from 2008 to 2011 in Guizhou Medical University (the former Guiyang Medical College) were enrolled. After they had been enrolled in the undergraduate education for 3 years and were ready for Grade four, which meant basic medicine teaching had been completed and clinical medicine teaching was about to start, they were introduced and preached to each discipline, including critical care medicine. The undergraduates were free to choose professional direction of clinical training in Grade four. Students majoring in clinical medicine from 2012 to 2014 were free to choose their major direction when they entered the school.Results:From September 2011 to July 2019, the university had cultivated 246 undergraduates majoring in clinical critical care medicine from 2008 to 2014, and the critical care medicine professional team of affiliated hospital had undertaken 540 teaching hours. By July 2019, all students had graduated on time, with an employment rate of 100%. Forty students took postgraduate programs in our school and other schools, accounting for 16.3%.Conclusions:Professional education of critical care medicine in the undergraduate course of clinical medicine can mobilize students' interest in learning and subjective initiative, which is conducive to career selection. During the clinical training, the students can identify and timely cure critical care cases in the early stage, and partly alleviate the current shortage of critical care medical staffs.

Carbon dioxide (CO 2) ejection syndrome is common after artificial pneumoperitoneum, and it often attracts the attention of anesthesiologists because of its rapid changes in vital signs. CO 2 ejection syndrome is not uncommon in critically ill patients, and may occur after mechanical ventilation in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). There are few relevant reports about CO 2 ejection syndrome, and a considerable number of clinicians have little understanding of the pathological changes. A case of AECOPD patient with CO 2 ejection syndrome after endotracheal intubation was admitted to the intensive care unit (ICU) of the Affiliated Hospital of Guizhou Medical University. After treatment, such as fluid expansion, vasoactive drugs and ventilator assistance, the patient's condition improved and was transferred out of the ICU. It is expected to provide some references by summarizing the diagnosis and treatment of this case and reviewing relevant literature reports.

Objective:To analyze the clinical characteristics of septic shock caused by upper and lower gastrointestinal perforation.Methods:Clinical data of patients with septic shock due to gastrointestinal perforation admitted to the department of critical care medicine of the Affiliated Hospital of Guizhou Medical University from January 2018 to December 2019 were analyzed retrospectively. The general information; procalcitonin (PCT), acute physiology and chronic health evaluation Ⅱ (APACHEⅡ) and sequential organ failure assessment (SOFA) scores during the first 24 hours in intensive care unit (ICU); results of ascites culture during the first 72 hours in ICU; the maximum dosage and total time of norepinephrine (NE) in ICU; mechanical ventilation time, the length of ICU stay, occurrence of acute kidney injury (AKI), continuous renal replacement therapy (CRRT) and 28-day mortality were collected. The patients were divided into upper gastrointestinal tract group (stomach and duodenum) and lower gastrointestinal tract group (jejunum, ileum, appendix, colon and rectum), with a boundary of Treitz. The clinical features between the two groups were compared.Results:There were 33 patients in the upper gastrointestinal tract group and 30 patients in the lower gastrointestinal tract group. There was no significant difference in gender and age between the two groups. The main pathogens in the ascites cultures in the upper gastrointestinal tract group were Candida albicans (45.5%), Enterococcus faecalis (18.2%) and Escherichia coli (18.2%). Escherichia coli (46.2%) and Enterococcus faecalis (30.8%) were the main pathogens in the lower gastrointestinal tract group. There were significant differences in PCT, the length of ICU stay, mechanical ventilation time, the maximum dosage and total time of NE between the upper gastrointestinal tract group and lower gastrointestinal tract group [PCT (μg/L): 17.69 (3.83, 26.62) vs. 32.82 (4.21, 100.00), the length of ICU stay (hours): 149.0 (102.5, 302.0) vs. 115.5 (30.8, 214.5), mechanical ventilation time (hours): 106.0 (41.5, 183.0) vs. 57.5 (25.0, 122.3), the maximum dosage of NE (μg·kg -1·min -1): 1.2 (0.5, 2.0) vs. 0.7 (0.5, 1.2), the total time of NE (hours): 72.0 (21.0, 145.0) vs. 26.5 (18.0, 80.5), all P < 0.05], while there was no statistically differences in APACHEⅡ or SOFA scores [APACHEⅡ: 30.0 (24.5, 35.0) vs. 28.0 (25.0, 33.5), SOFA: 10.67±4.14 vs. 9.50±3.33, both P > 0.05]. Compared with the lower gastrointestinal tract group, patients in the upper gastrointestinal tract group were more likely to have AKI (78.8% vs. 53.3%, P < 0.05) and require CRRT (39.4% vs. 16.7%, P < 0.05), but there was no significant difference in the 28-day mortality (39.4% vs. 43.3%, P > 0.05). Conclusions:The clinical characteristics of septic shock caused by upper and lower gastrointestinal perforation are not the same. Patients with septic shock caused by upper gastrointestinal perforation are more likely to suffer from fungal infection, with more severe shock, more likely to have AKI and require CRRT, and significantly longer mechanical ventilation and the length of ICU stay. While patients with septic shock caused by lower gastrointestinal perforation showed higher PCT.

In order to satisfy the social and medical demands for optometric talents, the education model combining "medicine, teaching, research and prevention" was established, fully integrated with various resources like talents, facilities, equipment from the affiliated eye hospital, institute of ophthalmology and prevention and treatment center for juvenile myopia. Cultivation of high-quality applicative talents which integrated "knowledge, skills and accomplishment" were taken as the main line, Cultivation goal was established in accordance with requirement of talent. The curriculum system was optimized on the basis of competence. The teaching mode was reformed to "2+2" mode, "double-position teachers" became the requirement for the teaching staff and professional education comprehensive practice platform of "one entity, two wings" was constructed, with good effectiveness being achieved.

Objective To observe the clinical features of atrial fibrillation (AF) patients, and to explore the correlation between the routine detection index and the new-onset AF and to find out risk factors for new AF in critically ill patients. Methods A prospective observational study was conducted. The patients with AF admitted to intensive care unit (ICU) of the Affiliated Hospital of Guizhou Medical University from March 2016 to June 2017 were enrolled. The patients were divided into new-onset AF group and past-existed AF group according to their past history of AF (including persistent AF, paroxysmal AF or permanent AF). In addition, patients in ICU without history of AF and new-onset AF were selected as the control group (no AF group). The general epidemiological characteristics of patients in three groups, and the blood biochemical, coagulation and other related indicators at the time of AF occurred (new-onset AF group) or 48 hours after ICU admission (AF group and no AF group) were analyzed; the difference of laboratory indexes between patients in new-onset AF group with AF within 48 hours before occurred and patients in no AF group within 48 hours after admission to ICU was compared. The relationship between each index and new-onset AF were analyzed. Pearson or Spearman rank correlation was used for analysis. Risk factors of new-onset AF were analyzed by Logistic regression analysis. Results 1 673 patients were admitted to ICU, including 179 cases of AF (10.70%), and 106 males and 73 females, with an average age of (71.73±23.22) years. There was 75 new-onset AF (morbidity 4.48%), and had a 28-day mortality of 45.33% (34/75). There were differences in age, previous heart disease and heart failure (HF) among new-onset AF group (n = 75), past-existed AF group (n = 104) and no AF group (n = 75). Compared with other two groups, renal insufficiency rates, troponin, serum sodium, calcium and procalcitonin levels were higher, mechanical ventilation time and the length of ICU stay were significantly prolonged, ICU and hospitalization costs were higher in new-onset AF group. Compared with no AF group, new-onset AF patients with the higher percentage of septic shock, the accumulation of vascular contraction drugs within 24 hours after AF usage were higher, and used more anti-arrhythmic drugs, has higher brain natriuretic peptide (pro-BNP), serum creatinine, blood lactic acid levels, and lower albumin, oxygenation index, and serum potassium levels, sequential organ failure assessment (SOFA) score, acute physiology and chronic health evaluation Ⅱ(APACHE Ⅱ) score and 28-day mortality were higher. Correlation analysis showed that age, APACHE Ⅱ score, septic shock, HF, cardiovascular disease, renal insufficiency were positively correlated with new-onset AF (r values were 0.393, 0.270, 0.386, 0.251, 0.194, 0.170;P values were 0.000, 0.001, 0.000, 0.002, 0.017, 0.037, respectively). The age [odds ratio (OR) = 0.962, P = 0.046], basic oxygenation index (OR = 1.005, P = 0.028) and serum potassium levels (OR = 1.638, P = 0.022) were the risk factors for new-onset AF. Conclusions Critical patients with a high incidence of AF, new-onset AF significantly prolong the length of ICU stay; age, APACHE Ⅱ score, septic shock, cardiovascular disease, and renal insufficiency are related to new-onset AF; age, basic oxygenation index and serum potassium levels are risk factors for new-onset AF.

Objective To investigate the effects of narrow-band ultraviolet B (NB-UVB) therapy on the levels of plasmin and CC chemokine ligand 20 (CCL20) in peripheral blood of patients with psoriasis vulgaris.Methods A total of 60 patients with psoriasis vulgaris in progressive stage were treated with NB-UVB radiation thrice a week for 8 weeks.Enzyme-linked immunosorbent assay (ELISA) was performed to detect the levels of plasmin and CCL20 in the peripheral blood of the patients before and after the treatment,as well as in the peripheral blood of 50 healthy controls.Results After the treatment,psoriasis area and severity index (PASI) scores in patients were significantly decreased compared with those before the treatment (2.54 ± 1.64 vs.10.26 ± 3.14,t =17.40,P ＜ 0.05),and the response rate was up to 87％ (52/60).Before the treatment,levels of plasmin and CCL20 were both significantly higher in the patient group than in the control group (plasmin:180.07 ± 40.62 μg/L vs.76.30 ± 26.92 μg/L,t =15.45,P ＜ 0.05;CCL20:422.41 ± 129.87 pg/L vs.205.33 ± 49.89 pg/L,t =11.15,P ＜ 0.05).After the treatment,levels of plasmin (148.22 ± 40.05 μg/L) and CCL20 (329.67 ± 100.73 pg/L) in patients were significantly decreased compared with those before the treatment (t =4.97,6.44,P ＜ 0.05),but still significantly higher than those in controls (t =10.82,7.95,P ＜ 0.05).Before the treatment,the level of plasmin was positively correlated with the level of CCL20 in peripheral blood of the patients (r =0.57,P ＜ 0.05),and the levels of plasmin and CCL20 were both positively correlated with the PASI score (r =0.49,0.62,respectively,both P ＜ 0.05).Conclusion NB-UVB radiation may exert a therapeutic effect on psoriasis vulgaris by reducing levels of plasmin and CCL20 in peripheral blood of patients.