Objective:To explore the correlation between Coronin-1 and non-Mtb induced autophagy in macrophages and its possible signal pathway.Methods: The pEGFP-C1-Coronin-1 plasmids encoding the over-expression of Coronin-1 and pGenesil-1-Coronin-1 plasmids encoding the siRNA of Coronin-1 gene were constructed and transfected into RAW264.7 respectively in order to obtain their stable transfected cell line ( RAW264.7-Cor.Plus and RAW264.7-Cor.Minus ).After the RAW264.7, RAW264.7-Cor.Plus and RAW264.7-Cor.Minus group cells were treated with complete medium, starvation, Rapamycin and Cyclosporine A respectively,the transcription level of Beclin-1 gene was detected by RT-PCR,and the protein expression level of Coronin-1 and Beclin-1 and the ratio of LC3BⅡ/LC3BⅠwas analyzed by Western blot.Results:The over-expression plasmids,the siRNA plasmids and their stable transfected cell lines which can over-express the Coronin-1 or inhibit its expression were successfully constructed.When the three groups cell treated with blank control,the ratio of LC3BⅡ/LC3BⅠwas found that:RAW264.7-Cor.Minus>RAW264.7>RAW264.7-Cor.Plus significantly,and the transcription level of Beclin-1 gene and its protein detected by RT-PCR and Western blot respectively showed the same trend with the ratio of LC3BⅡ/LC3BⅠ;When the three groups cell treated with starvation,the ratio of LC3BⅡ/LC3BⅠjust become the opposite of the first result significantly;When the RAW264.7 cells treated with Rapamycin, the expression of Coronin-1 was inhibited significantly.The ratio of LC3BⅡ/LC3BⅠin the RAW264.7-Cor.Plus group treated with Rapamycin and CsA respectively was higher than its corresponding control treatment group.Conclusion:There is a correlation between Coronin-1 and non-Mtb induced cell autophagy in macrophage.In the nutrition sufficient condition, Coronin-1 can inhibit autophagy;in the hungry condition,Coronin-1 can promote autophagy.The regulation of autophagy by Coronin-1 may be associated with mTOR and calcium signaling pathway.

OBJECTIVE To study the bactericidal efficacy of glutaraldehyde,and its stability and change in pH value.METHODS The carrier quantity bactericidal test,field mimic bactericidal test,stability test,pH value detection,periodical biological surveillance and follow-up investigation of hospital infection were used.RESULTS After using of 20 000 mg/L of neutral glutaraldehyde on Candida albicans(ATCC 10231),Pseudomonas aeruginosa(ATCC27853),Escherichia coli(ATCC 25922) and other 3 clinical isolates separately for 3,5,and 10 min,the average killing rate was 97.90%,99.83% and 100.00%;on the field mimic bactericidal test with MRSA contaminated gastroscope,the average killing rate was 87.84%,99.50%,and 100.00%,respectively.The concentration of disinfectant after storaging 14d on 54℃ was decreased,only loss 1.46%,the concentration loss of disinfectant on using endoscope 5,7,and 14d after disinfection was 2.64%,0.69% and 0.94%,respectively.The value of pH was decreased from 7.22 to 6.00,6.50,and 6.20.The qualification rate of 260 various endoscopes after surveillance was 100.00%.Their was one of hospital infection happened among 3 200 patients after endoscopy which were followed up.CONCLUSIONS The results show that,only under the following circumstances,namely the concentration of glutaraldehyde being no less than 20 000mg/L and the action time being no less than 10 min,timely alteration of glutaraldehyde,and regular biological and concentration monitoring could the disinfection of endoscope be qualified so that hospital infection can be prevented,and medical dispute may be put to an end.

In order to strengthen the graduate management in scientific research platform and to ensure the quality of graduate training,the ideological and moral education was invigorated through establishing virtual party branch,the behavior was regulated through establishing and amplifying the daily management system,the student interests were protected through establishing financial management system and the cultivation quality was guaranteed through perfecting the academic management system.Satisfactory results were achieved in molecular medicine and cancer research center in Chongqing Medical University.

OBJECTIVE To know the disinfection efficacy of electrolyzed oxidizing water(EOW) and glutaraldehyde on clinical used gastroscope and enteroscope in our hospital and to analyze their stability and probable harm.METHODS The gastroscope and enteroscope before and after use on randomly selected outpatients and inpatients were examined on their contamination,and the efficacy of EOW was compared with that of glutaraldehyde.RESULTS After using EOW and glutaraldehyde to disinfect the gastroscope and enteroscope the former showed that its killing rate on commonly encountered pathogens for 1 min was 93.75-98.22%,for 3 min was 81.20-89.29%,and for 5 min was 100.00%;the latter showed that its killing rate for 3 min was 81.20-89.29%,for 5 min was 90.38-93.04%,and for 10 min was 99.92-99.96%.EOW was non-irritative to mucosa,and didn′t cause allergic reaction,but its stability was poor.The glutaraldehyle could bring some side effects,such as some allergy,and mucosa stimulation.CONCLUSIONS It only needs 3-5 min for EOW to kill polluted bacteria on gastroscope and enteroscope to attain the disinfection eligibility,but glutaraldehyde needs more than 10 min to get to the disinfection eligibility.The effect of EOW is strong,rapid,active and environment-safe,it is worthy of application,but it must be applied immediately as soon as possible after production.The use of glutaraldehyde must strengthen the measures of personal protection.

Objective To evaluate the effect of artemether on the cell cycle and the radiosensitivity in human nasopharyngeal carcinoma cell line CNE-1.Methods Cell growth inhibition was assessed with MTT.The method of colony-forming was used to detect the radiation sensitivity.Cell cycle distribution was analyzed by using flow cytometry.The protein expressions of clyclin B1 and Weei were detected by using Western blot.Results The growth of CNE-1 cells was inhibited in a dose-dependent manner.The concentration of 20 μmol/L artemether had radiosensitive effect on CNE-1 cells at 24 h after administration,and SER was 1.481.When CNE-1 cell was irradiated,the G2/M cells increased (t =4.59,P ＜ 0.05).After exposure to combination of artemether and irradiation,the G2/M cells were decreased (t= 10.60,P ＜ 0.05).Western blot showed that artemether increased the level of cyclin B1 expression and inhibited the level of Weel expression.Conclusions The noncytotoxic concentration of artemether could enhance radiosensitization of CNE-1 cells.The radiosensitivity enhancement of artemether might depend on the exposure time.The effect is most obvious when radiation is delivered 24 h after expose to artemetherr.The radiosensitizing effect could be related to apoptosis.

Objective To investigate the expression of cyclooxygenase-2(COX-2)and Ki-67 in rectal cancer tissues and their predictive value for the sensitivity to neoadjuvant chemoradiotherapy(NAC).Methods The clinical data of 87 patients receiving chemoradiotherapy before rectal cancer surgery at Nanjing Hospital Affiliated to Nanjing University of Chinese Medicine(the Second Hospital of Nanjing)from June 2021 to September 2022 were retrospectively analyzed.In addition,40 normal rectal tissue samples were selected from the Department of Pathology of Nanjing University of Chinese Medicine(the Second Hospital of Nanjing)as control.The expression levels of COX-2 and Ki-67 in tumor and adjacent tissues of patients with rectal cancer as well as in normal rectal tissues were detected by using the immunohistochemical method.The patients were divided into chemoradiotherapy-sensitive group(n=62)and chemoradiotherapy-resistant group(n=27)according to whether they were sensitive to chemoradiotherapy.The correlation between the expression levels of COX-2,Ki-67 in tumor tissues and adjacent tissues and the sensitivity to chemoradiotherapy was analyzed.The relative factors affecting the effect of chemoradiotherapy on rectal cancer patients were analyzed by using the logistic regression model.The receiver operating characteristic(ROC)curve was drawn,and the area under the curve(AUC)was used to evaluate the predictive value of COX-2 and Ki-67 expression levels in tumor tissues of rectal cancer patients for the sensitivity to NAC.Results Among the 87 patients with rectal cancer,60 patients were sensitive to chemoradiotherapy,with a sensitivity rate of 68.97％.The positive expression rates of COX-2 and Ki-67 in tumor tissues and adjacent tissues were significantly higher than those in normal rectal tissues(x2=53.187,7.131,53.047,14.613;P＜0.05).The positive expression rates of COX-2 and Ki-67 in tumor tissues were significantly higher than those in adjacent tissues(x2=72.572,67.616;P＜0.05).The positive expression rates of COX-2 and Ki-67 in tumor tissues of patients in the chemoradiotherapy-sensitive group were significantly lower than those in the chemoradiotherapy-resistant group(x2=3.965,6.264;P＜0.05).Logistic regression analysis showed that the positive expression of COX-2 and Ki-67 in tumor tissues were factors affecting the efficacy of NAC in rectal cancer patients(P＜0.05).ROC curve analysis results showed that the sensitivity of COX-2 and Ki-67 expression and their combination for predicting sensitivity of patients to NAC was 100.00％,100.00％,and 100.00％,respectively;while the specificity was 13.33％,20.00％,and 31.67％,respectively;and the AUC was 0.567,0.600,and 0.658,respectively.Conclusion The positive expression of COX-2 and Ki-67 in tumor tissues are factors affecting the efficacy of NAC in rectal cancer patients,and the combined detection of COX-2 and Ki-67 expression has a high predictive value for the sensitivity of NAC.

Objective:To explore whether hypoxia-inducible factor prolyl hydroxylase inhibitor (HIF-PHI) preconditioning can relieve inflammation, reduce cell apoptosis and alleviate renal ischemia-reperfusion injury in mice.Methods:Male C57BL/6 mice were randomly divided into three groups of sham operation (sham), ischemia reperfusion injury (IRI) and IRI+ HIF-PHI ( n=6 each). In IRI+ HIF-PHI group, mice received an intragastric dose of roxadustat (20 mg/kg) every other day one week before. After renal IRI modeling, serum creatinine (SCr) level was monitored and hematoxylin-eosin (HE) staining employed for observing the pathological changes of renal tissue and scoring injury degree. Apoptosis of renal tubular epithelial cells was assessed by terminal-deoxynucleoitidyl transferase mediated nick end labeling (TUNEL). Reverse transcription-polymerase chain reaction (RT-PCR) was utilized for detecting the mRNA expressions of HIF-1α, TNF-α and IL-1β in renal tissues. Immunofluorescence and immunohistochemistry were employed for detecting the expressions of hypoxia-inducing factor 1α (HIF-1α), inflammatory cytokines tumor necrosis factor α (TNF-α) and interleukin 1β (IL-1β). Results:As compared with IRI group, SCr level declined markedly in IRI+ HIF-PHI group ( P<0.01), renal tissue injury improved markedly, semi-quantitative score of renal tubule injury dropped ( P<0.01), apoptotic cells decreased ( P<0.01) and the expression levels of TNF-α and IL-1β declined ( P<0.05). Compared with sham group, the mRNA expression of HIF-1α was not significantly elevated in IRI group ( P>0.05). Immunofluorescence showed that the expression of HIF-1α in medulla of renal tissues was up-regulated in IRI group, but not markedly in cortex. While the mRNA expression of HIF-1α was markedly up-regulated after a pretreatment of HIF-PHI ( P<0.05), the expression spiked markedly in renal cortex, but was weaker in medulla than that in IRI group. Conclusions:HIF-PHI can boost the expression level of HIF-1α, reduce the expression of inflammatory factors, relieve the inflammatory response, reduce cell apoptosis, improve renal function and alleviate renal ischemia reperfusion injury.

Objective A deep learning-based method for evaluating the quality of pediatric pelvic X-ray images is proposed to construct a diagnostic model and verify its clinical feasibility.Methods Three thousand two hundred and forty-seven children with anteroposteric pelvic radiographs are retrospectively collected and randomly divided into training datasets,validation datasets and test datasets.Artificial intelligence model is conducted to evaluate the reliability of quality control model.Results The diagnostic accuracy,area under ROC curve,sensitivity and specificity of the model are 99.4%,0.993,98.6%and 100.0%,respectively.The 95%consistency limit of the pelvic tilt index of the model is-0.052-0.072.The 95%consistency threshold of pelvic rotation index is-0.088-0.055.Conclusion This is the first attempt to apply AI algorithm to the quality assessment of children's pelvic radiographs,and has significantly improved the diagnosis and treatment status of DDH in children.

Objective:To elucidate the current proficiency level in diagnosing pediatric biliary atresia among Chinese sonographers and to identify contributing factors that may influence their diagnostic capabilities.Methods:A cross-sectional internet-based survey was conducted from November 6, 2021, to December 12, 2021. The online questionnaire was disseminated to a national cohort of sonographers via WeChat groups. The survey encompassed three domains: demographic data of the participants, clinical and ultrasonographic knowledge pertaining to biliary atresia, and the cognitive understanding of biliary atresia. Descriptive statistics were utilized for the evaluation of demographic information and sonographers' clinical and ultrasonographic comprehension concerning biliary atresia. A generalized linear model was employed to ascertain the determinants influencing sonographers' expertise in clinical management and ultrasonographic diagnosis of biliary atresia.Results:A total of 511 valid responses were collated. Approximately 64.77% (331/511) of sonographers indicated a lack of comprehensive understanding of the essential parameters for ultrasonographic diagnosis of biliary atresia. Regression analysis revealed that sonographers affiliated with lower-tier hospitals ( β=-0.344, P=0.002), non-pediatric institutions ( β=-0.747, P=0.004), and those with less than 15 years of professional experience ( β=0.952, P<0.001) exhibited diminished proficiency in diagnosing biliary atresia. Upon encountering suspected cases, a mere 5.48% (28/511) of sonographers expressed complete confidence in their diagnostic capabilities. Lower professional grade ( β=-0.572, P<0.001) and lack of prior experience with suspected cases of biliary atresia ( β=-0.693, P<0.001) contributed to reduced diagnostic self-assurance among sonographers. Regarding the clinical and ultrasonographic intricacies associated with biliary atresia, only 3.33% (17/511) of sonographers had a full understanding of the diagnostic significance of hepatic fibrous plaques on ultrasound for biliary atresia. Conclusion:The study underscores a pervasive inadequacy in the understanding and diagnostic confidence among sonographers in relation to pediatric biliary atresia. Various pragmatic factors, including hospital tier, years of experience, and professional ranking, exert a direct impact on the sonographers' diagnostic acumen. Given these findings, there is an exigent need for targeted educational initiatives to enhance the diagnostic proficiency in biliary atresia among sonographers.

Objective:To explore the efficacy and safety of low-dose rabbit anti-human thymocyte globulin (rATG) for induction therapy of kidney transplantation (KT) in children.Methods:From October 2018 to May 2021, clinical data were reviewed retrospectively for 77 pediatric KT recipients on a low-dose rATG induction protocol.Recipient/graft survival rate, renal function recovery, acute rejection (AR) and adverse reactions were observed at 1 year post-operation.The postoperative changes of renal function were examined by Friedman’s test; According to the preoperative baseline data, Pearson’s Chi-square or Fisher's exact test was utilized for examining the influencing factors of postoperative AR.Results:A total of 16(20.78%) recipients had AR within the first 6 months post-operation.The incidence of delayed graft function (DGF) was 14.29%(11/77); The incidence of severe infection post-transplantation 18.18%(14/77), the infection rate of BK virus 25.97%(20/77) and the incidence of neutropenia 32.47%(25/77).The recipient/graft survival rate at 1 year post-operation was 97.40%(75/77) and 94.81%(73/77) respectively.Chi-square test indicated that the incidence of postoperative infection in children with body weight ≤30 kg and height ≤138 cm was 28.95%(11/38) and 27.50%(11/40) respectively, Both were higher than 7.69%(3/39) and 8.11%(3/37) of children with body weight >30 kg and height>138 cm.The difference between groups was statistically significant ( P=0.016 and 0.028). Conclusions:Low-dose rATG is generally excellent in preventing AR in pediatric KT recipients.And the risk of related AR may be lower.The infection rate of recipients with decent preoperative development is low.