Objective To study chromatography fingerprints of Zanthoxylum echinocarpum by HPLC.Methods Diamonsil C18 column(250 mm?4.6 mm,5 ?m) was used with acetonitrile-water gradient elution,at flow-rate of 1.0 mL/min,detection wavelength at 278 nm.Results HPLC was used to establish fingerprint chromatograph of water extraction from ten batches of Z.echinocarpum,which had been harvested from the same area in Zhangjiajie at the same time.The result showed that 11 peaks were common.Conclusion The method could be used for the quality control of Z.echinocarpum.

Objective:To explore the effects of endoscopic reprocessing on disinfection and its influential factors under the coronavirus disease 2019 (COVID-19) pandemic.Methods:A total of 450 endoscopes cleaned and disinfected according to Technical Specifications for Cleaning and Disinfection of Endoscopes from November 2019 to January 2020, and 450 endoscopes cleaned and disinfected according to The recommended procedure for cleaning and disinfection of gastrointestinal endoscopes during COVID-19 epidemic by Chinese Society of Digestive Endoscopology from February to April 2020 in the Second Affiliated Hospital of Chongqing Medical University were enrolled in the control group and observation group respectively by random number method. Both the control group and the observation group contained 200 gastroscopes, 200 enteroscopes and 50 ultrasound endoscopes. ATP fluorescence detection method and pour plate technique were used to evaluate the disinfection effect of endoscopes. Single factor analysis and multiple logistic regression were used to analyze the risk factors for unqualified sterilization after endoscopic reprocessing. Results:The disinfection pass rates of gastroscopes, enteroscopes and ultrasound endoscopes in the observation group were not significantly different compared with those of the control group ( P>0.05). The sterilization pass rates and ATP test pass rates of gastroscopes, enteroscopes and ultrasound endoscopes in the observation group were significantly higher than those in the control group (all P<0.05). Multivariate logistic regression analysis showed that non-strict implementation of endoscopic reprocessing ( OR=7.96, 95% CI: 4.55-22.84, P<0.001), non-standard operation ( OR=2.26, 95% CI: 1.24-5.63, P<0.001), insufficient concentration of disinfectant ( OR=5.43, 95% CI: 2.52-9.02, P<0.001), insufficient concentration ratio of multi-enzyme solution ( OR=4.38, 95% CI: 1.95-8.61, P<0.001), non-timely cleaning ( OR=2.86, 95% CI: 1.33-6.42, P<0.001), incomplete cleaning ( OR=3.75, 95% CI: 1.61-7.49, P<0.001) and improper endoscopic preservation ( OR=2.12, 95% CI: 1.36-4.12, P<0.001) were independent risk factors for unqualified sterilization after endoscopic reprocessing. Conclusion:In COVID-19 pandemic, endoscope reprocessing can significantly improve the disinfection effect of endoscopes, worthy of further clinical promotion. The failure to strictly implement the reprocessing procedure is an important factor that may lead to unqualified sterilization.

Objective: To identify Euryales Semen and its closely related species using the ITS2 barcode. Method:The total genomic DNAs were extracted from twenty samples of Euryales Semen and its closely related species. The ITS2 regions of the samples were amplified and bidirectional sequenced. Obtained sequences were submitted to the GenBank with Sequin 12.3. ITS2 sequences of 102 samples belonging to thirty species were downloaded from GenBank. The 122 ITS2 sequences were aligned and the genetic distances were analyzed with MEGA 5.1. Identification analyses were performed using BLAST1 and nearest distance methods, and were presented intuitively by constructing neighbor-joining (NJ) tree. Result: The length of ITS2 region of Euryales Semen was 214 bp, which was only one haplotype. There was significant divergence of the ITS2 regions among the samples. The NJ tree showed that Euryales Semen could be obviously differed from its closely related species, which had good 408 monophyly. Conclusion: ITS2 regions as a DNA barcode can stably and accurately distinguish Euryales Semen from its closely related species and also provide a new technique to ensure clinical safety in utilization of tradi-tional Chinese medicines. The new exploration could broaden the application of DNA barcoding technology in identification of Traditional Chinese Medicine.

Objective To study the anti-fatigue effect of methylphenidate hydrochloride oral fast dissolving films (MPH-OFDF) and its mechanism .Methods 60 mice were randomly divided into 6 groups as:normal control group (physiological sa-line) ,model group (physiological saline) ,Yiqiyangxue oral liquids positive group (7 .00 mg/kg) ,MPH-OFDF high-dose group (5 .20 mg/kg) ,MPH-OFDF middle-dose group (2 .60 mg/kg) and MPH-OFDF low-dose group (1 .30 mg/kg) .Besides the normal control group ,model group and positive group were orally administered ,the other groups are administered with the drug once daily sublingually daily for consecutive 15 days .The mice were put in the load-weighted swimming test 30 min after the last oral administration ,then the anti-fatigue effect was assessed based on recording exhausting swimming time and detec-ting the levels of serum lactale dehydrogenase (LDH) ,creatine kinase (CK) ,triglycerides (TG) in mice .Results Compared with control group ,the middle-dose and the high-dose MPH could prolong the exhausting swimming time (P<0 .05 ,P<0 .01) and decrease the activity of LDH and CK significantly (P<0 .05 ,P<0 .01);in addition the middle-dose MPH could decrease the content of TG (P<0 .05) .Conclusion The MPH had marked anti-fatigue effect that may be associated with reduced ser-um LDH ,CK and TG .

Objective:To examine the plasma expression levels and clinical significances of microRNA(miR)-101-3p and miR-141-3p in children with sepsis.Methods:One hundred and fifty-three children with sepsis admitted in Sanya People′s Hospital from January 2016 to October 2019 were divided into sepsis without shock group (94 cases) and septic shock group (59 cases). In addition, they were further divided into survival group (107 cases) and death group (46 cases) according to the 28-day survival.Another 60 healthy children were selected as the healthy control group.Real-time fluorescence quantitative polymerase chain reaction (RT-PCR) was performed to detect plasma levels of miR-101-3p and miR-141-3p in all subjects.Receiver operating characteristic curve(ROC) were depicted to identify the diagnostic and prognostic potentials of plasma miR-101-3p, miR-141-3p and procalcitonin(PCT) in sepsis. Pearson′ s correlation analysis was performed to analyze the correlation between the expression levels of miR-101-3p, miR-141-3p and PCT with Acute Physiology and Chronic Health Evaluation Ⅱ(APACHE Ⅱ)score, Sequential Organ Failure Assessment(SOFA)score, leukocyte count and C-reactive protein level in children with sepsis. Results:Plasma levels of miR-101-3p, miR-141-3p and PCT in septic shock group and sepsis without shock group were significantly higher than those in the healthy control group (all P<0.001). Moreover, plasma levels of miR-101-3p (4.25±1.46 vs.1.86±0.75), miR-141-3p (3.17±1.08 vs.1.20±0.52) and PCT [(20.75±9.36) μg/L vs.(5.80±2.40) μg/L] in septic shock group were significantly higher than those in sepsis without shock group (all P<0.001). In addition, plasma levels of miR-101-3p, miR-141-3p and PCT in survival group and death group were significantly higher than those in the healthy control group (all P<0.001). Notably, plasma levels of miR-101-3p (4.83±1.62 vs.1.40±0.58), miR-141-3p (3.50±1.13 vs.0.96±0.47), and PCT [(26.30±11.72) μg/L vs.(3.25±2.16) μg/L] in death group were significantly higher than those in the survival group (all P<0.001). ROC curve analysis showed that the area under the curve (AUC) and 95% confidence interval (95% CI) of the combined diagnosis of sepsis with miR-101-3p, miR-141-3p and PCT were significantly higher than that of miR-101-3p, miR-141-3p or PCT alone [0.908 (0.850-0.970) vs.0.810 (0.748-0.873), 0.784 (0.723-0.844) and 0.825 (0.764-0.883), respectively; Z1=4.682, Z2=5.380 and Z3=4.417, all P<0.05]. The sensitivity and specificity of the combined diagnosis was 92.5% and 84.0%, respectively.The AUC and 95% CI of the combined prediction of miR-101-3p, miR-141-3p and PCT in the mortality of children with sepsis children with were significantly higher than those with miR-101-3p, miR-141-3p or PCT alone [0.930 (0.872-0.986) vs.0.848 (0.786-0.907), 0.792 (0.730-0.853) and 0.820 (0.762-0.878), respectively; Z1=4.537, Z2=5.728 and Z3=5.106, all P<0.05]. The sensitivity and specificity of the combined prediction in the mortality was 94.6%, and 87.0%, respectively.Correlation analysis showed that miR-101-3p and miR-141-3p levels were positively correlated with PCT ( r=0.804, 0.773, all P<0.001), APACHE Ⅱ score ( r=0.738, 0.695, P<0.001) and SOFA score ( r=0.752, 0.764, all P<0.001). Conclusions:Plasma levels of miR-101-3p and miR-141-3p in children with sepsis significantly increased, which are correlated with the severity of sepsis.A combination detection of miR-101-3p, miR-141-3p and PCT has high diagnostic and prognostic potentials in children with sepsis.

Objective To observe the effects of dexmedetomidine on intraoperative wake-up test in Brucellar spondylitis (BS) patients undergoing surgical operation.Methods Using the case control method,thirty-two patients undergoing BS surgical operation from January 2014 to December 2017 in Harbin the Fifth Hospital were enrolled in this study,the patients were randomly classified into the experimental group (n =16) and the control group (n =16).The two groups were anesthetized with midazolam,propofol,sufentanil and cisatracurium,then anesthesia was maintained with sevoffurane inhalation and a continuous intravenous infusion of remifentanil.In the experimental group,dexmedetomidine 0.4 μg· kg-1·h-1 was administered after tracheal intubation,while equal volume saline solution was given to control group.When the wake-up test was performed,the values of mean arterial pressure (MAP),heart rate (HR) and bispectral index (BIS) were recorded at the time points of preinduction (T0),just before wake-up (T1) and awakening (T2).The wake-up time,the amount of bleeding during the wake-up period,the wake-up quality rating and the sedation score were recorded.Results There was significant difference in HR and MAP at T0,T1 versus at T2 in control group [(98.8 ± 21.0) time/min vs (84.5 ± 8.1),(81.8 ± 1.7) time/min,(90.2 ± 7.5) mmHg vs (76.2 ± 5.7),(74.6 ± 8.5) mmHg,1 mmHg =0.133 kPa,P ＜ 0.05].In experimental group,HR and MAP were lower than those in control group at T2,and the difference between the two groups was statistically significant [(86.3 ± 12.3) time/min vs (98.8 ± 21.0) time/min,(77.9 ± 6.3) mmHg vs (90.2 ± 7.5) mmHg,t =-2.901,-4.995,P ＜ 0.05).The wake-up test quality was significantly better in test group than that in control group,the difference was statistically significant (excellent:13 cases vs 4 cases,good:2 cases vs 6 cases,poor:1 case vs 6 cases,x2 =4.571,P ＜ 0.05).The wake-up time and the amount of bleeding during wake-up period were less than that in control group,the difference was statistically significant [(14.5 ± 3.6) min vs (26.1 ± 4.5) min,(239.8 ± 53.9) ml vs (317.3 ± 54.8) ml,t =-7.980,-4.032,P ＜ 0.05].Conclusion Dexmedetomidine when continuous pumped at a rate of 0.4 μg· kg-1· h-1 could reduce the hemodynamic stress response during the wake-up test,improve the wakeup test quality,shorten the wake-up time and effectively improve the safety factor of operation during Brucellar surgical operation.

Background::The CHA 2DS 2–VASc score was initially applied to stratify stroke risk in patients with atrial fibrillation (AF) and was found to be effective in predicting all-cause mortality outcomes. To date, it is still unclear whether circulating long non-coding RNAs (lncRNAs) as emerging biomarkers, can improve the predictive power of the CHA 2DS 2–VASc score in stroke and all-cause mortality. Methods::Candidate lncRNAs were screened by searching the literature and analyzing previous RNA sequencing results. After preliminary verification in 29 patients with AF, the final selected lncRNAs were evaluated by Cox proportional hazards regression in 192 patients to determine whether their relative expression levels were associated with stroke and all-cause mortality. The c-statistic, net reclassification improvement (NRI), and integrated discrimination improvement of the patients were calculated to evaluate the discrimination and reclassification power for stroke and all-cause mortality when adding lncRNA expression levels to the CHA 2DS 2–VASc score model. Results::Five plasma lncRNAs associated with stroke and all-cause mortality in AF patients were selected in our screening process. Patients with elevated H19 levels were found to have a higher risk of stroke (hazard ratio [HR] 3.264, 95% confidence interval [CI]: 1.364–7.813, P = 0.008). Adding the H19 expression level to the CHA 2DS 2–VASc score significantly improved the discrimination and reclassification power of the CHA 2DS 2–VASc score for stroke in AF patients. In addition, the H19 level showed a marginally significant association with all-cause mortality (HR 2.263, 95% CI: 0.889–5.760, P = 0.087), although it appeared to have no significant improvement for the CHA 2DS 2–VASc model for predicting all-cause mortality. Conclusions::Plasma expression of H19 was associated with stroke risk in AF patients and improved the discriminatory power of the CHA 2DS 2–VASc score. Therefore, lncRNA H19 served as an emerging non-invasive biomarker for stroke risk prediction in patients with AF.

Objective To investigate the results of ambulatory electrocardiographic(ECG)monitoring in a community-based homebound elderly population and to explore the applicability of wearable long-range ambulatory ECG monitor for them.Methods Elderly volunteers were recruited in Shuangbei Community,Shapingba District,Chongqing,from November 2021 to June 2023.A single-lead wearable ambulatory ECG recorder was applied to them to obtain ECG for 7 consecutive days.The adverse reactions,acceptability,monitoring duration,and arrhythmia detection rate during the wearing were described and recorded.Serious arrhythmic events included frequent atrial premature,atrial flutter,atrial fibrillation(AF),frequent ventricular premature,and RR intervals ≥5 s.Results There were 416 individuals enrolled,with a mean age of 71.2±6.6 years,and a male percentage of 36.1％(150 men).Finally,384(92.3％)participants completed the wearing of the ECG monitor for 7 d,with an average time of 159.2±29.4 h.There were 179 participants(48.5％)reporting no discomfort during wearing,and 175 ones(47.4％)feeling itchy at the wearing site.The monitoring results showed that the common arrhythmias were atrial premature contractions(97.1％),premature ventricular contractions(93.3％),atrial tachycardia(84.6％),bradycardia(46.6％),frequent atrial premature contractions(15.1％),ventricular tachycardia(13.2％),and long RR interval(11.8％).Among them,29.1％of the participants experienced serious arrhythmic events,and the detection rate of certain serious arrhythmic events was comparatively higher in the individuals≥70 years of age and those with history of previous cardiac disease.Conclusion The detection rate of common arrhythmias is quite high in the community-based homebound elderly population.A 7-day long-range ambulatory ECG monitoring may be appropriate.

Objective To investigate the expression of long non-coding RNA(lncRNA),surfactant associated 1 pseudogene(SFTA1P)in lung squamous carcinoma and its effect on the biological functions of SFTA1P in lung squamous carcinoma cell lines.Methods Based on the cancer genome atlas(TCGA)database,the differential expression of SFTA1P in tumor and normal tissues were compared in patients diagnosed with lung squamous cell carcinoma.Then,the expression of SFTA1P was detected in human normal lung epithelial cell line BEAS-2B and lung squamous cell lines SK-MES-1 and H520 with real-time quantitative polymerase chain reaction(RT-qPCR).SK-MES-1 and H520 cells with overexpression and/or knockdown of SFTA1P were constructed by transfecting the overexpression plasmids(pcDNA3.1-SFTA1P)and small interfering RNAs(si-SFTA1P-1 and si-SFTA1P-2).CCK-8 assay and Transwell assay were used to investigate the effect of SFTA1P on biological functions in lung squamous carcinoma cells.Differential gene expression analysis,correlation analysis and functional enrichment analysis were employed to explore the potential mechanism that SFTA1P may affect biological functions of lung squamous cells.Results Analysis of TCGA showed that the expression of SFTA1P was significantly lower in lung squamous cell carcinoma tissue than adjacent normal tissue(P＜0.05).RT-PCR results showed that the expression of SFTA1P was obviously lower in lung squamous carcinoma cells than the human normal lung epithelial cells(P＜0.05).And the expression level of SFTA1P was relatively lower in the SK-MES-1 cells than the H520 cells(P＜0.05).Overexpression of SFTA1P suppressed the proliferation,migration and invasion of lung squamous carcinoma cells(P＜0.05),while its knockdown promoted these abilities(P＜0.05).Differential gene expression analysis,correlation analysis and functional enrichment analysis indicated that SFTA1P may inhibit MYC,G2m checkpoints and E2f signaling pathways in lung squamous cell carcinoma.Conclusion SFTA1P shows anti-cancer function in lung squamous cell carcinoma,and it may affect the biological functions of lung squamous cell carcinoma cells through down-regulating MYC,G2m checkpoints and E2f signaling pathways.

OBJECTIVE： To optimize the extraction technology of total vitamin E in Euryale ferox. METHODS： With the extraction amount of total vitamin E as reference index， using extraction time， extraction times， ultrasound power and comminution degree as reference factors， single fator test and Box-Behnken design-response surface methodology was used to optimize the extraction technology of total vitamin E from E. ferox. The validation tests were conducted for 3 times （the amounts of E. ferox were 2.0， 20.0， 40.0 g）. RESULTS： The optimal extraction technology of vitamin E included that extraction time of 80 min， extraction times of 3 times， ultrasound power of 240 W， comminution degree of 80 mesh. In validation test， extraction rates of total vitamin E were 2.063， 2.103， 2.085 mg/g （RSD＝2.6％， 1.5％， 1.3％， n＝3）， the relative errors of which to predicted value （2.092 mg/g） were 0.14％， 0.53％ and 0.33％， respectively. CONCLUSIONS： The optimal extraction technology is reasonable， stable and feasible， and can be used for the extraction of total vitamin E in E. ferox.