Based on the significance of the innovative experiment program for college students and the experience at home and abroad,this paper analyzes the current situation of the implementation of this plan by School of Medicine of Shanghai Jiaotong University.It summarizes the beneficial experience of training students' scientific research thinking in the implementation of the course plan,through literature reading,project design and so on.Practice has proved that,with rigorous and reasonable protection system and the scientific implementation of the process and the quality control system,the program can play a role in improving the students' ability of innovation and practice,stimulate their interest in scientific research,and excavate their research potential.

Objective To investigate the effect of resistance training on the rehabilitation of patients after hip replacement with the framework of the theory of planned behavior(TPB).Methods A total of 85 patients of hip fracture patients in Gansu Provincial Hospital of Traditional Chinese Medicine from July 2022 to April 2023 were selected as research objects.The patients were separated into intervention group(n=43)and control group(n=42)by random sampling.Both groups were treated with routine nursing,and the intervention group was given resistance training based on TPB.The intervention time was 3 months.The Harris hip score(HHS),36-item short form(SF-36)score and Barthel index(BI)scores of the two groups were compared before intervention,1 month and 3 months after intervention,as well as the functional exercise compliance score of the patients 3 months after intervention.Results After 1 month and 3 months of intervention,the HHS,SF-36 score and BI score of intervention group were better than those of control group,and after 3 months of intervention,the executive ability of functional exercise in intervention group was significantly higher than that of control group,and the mean difference was significant(P＜0.05).Conclusion Resistance training led by TPB can effectively improve the functional exercise compliance of patients after total hip arthroplasty,improve the muscle strength,balance ability and joint stability of patients,and then improve the daily activity ability and quality of life.

Clinical data were retrospectively reviewed for one case of penicillium marneffei infection after renal transplantation (RT) to explore a proper management of peniciliosis marneffei (PSM)transplantation.This case had a history of pulmonary tuberculosis and underwent RT due to uremia.After discharging, postoperative recovery was excellent.Recurrent cough occurred at Month 7 post-operation.Fiberoptic bronchoscopy and pulmonary CT indicated a possibility of pulmonary tuberculosis.However, a definite diagnosis of PSM was confirmed by next generation sequencing (NGS) and pathogenic bacteria culture of alveolar lavage fluid.After adjusting immunosuppressive agents and regular antifungal treatment with voriconazole, respiratory symptoms improved and pulmonary CT hinted at a resorption of lesion.Features of pulmonary CT and bronchoscopic examination were nearly similar to those of tuberculosis.Thus early bacterium culture and NGS may aid an definite diagnosis.Voriconazole is an effective treatment of the disease.

To explore the feasibility and experience of kidney transplantation with horseshoe kidney as donor kidney. The horseshoe kidney donated by a brain dead donor was obtained by in-situ perfusion and whole piece incision. After methylene blue staining was injected into the inferior pole artery of the kidney and separated from the isthmus along the edge of the stained site, two kidney donors were divided into two recipients with successful implantation. After renal transplantation, the blood supply of the two donor kidneys was good. During the perioperative period, there was no bleeding or urine leakage. Postoperative ureteral obstruction occurred in one recipient. After the double J-tube drainage was ineffective, autologous ureter was anastomoted with the renal pelvis of the transplanted kidney. Up to now, the renal function of two recipients remained stable. According to literature analysis, kidney transplantation with well-functioning horseshoe kidney as donor kidney is safe and feasible, but its postoperative complication rate is higher than that of conventional kidney transplantation.

Multidrug resistance （MDR） has been a main culprit behind the failure of chemotherapy in patients with malignant tumors and a major obstacle to improving the life quality and prolonging the survival of patients. Hepatocellular carcinoma cells， the innate drug-resistant cells， are generally insensitive to radiotherapy and chemotherapy. Moreover， as the early symptoms of hepatocellular carcinoma are atypical， most patients are diagnosed at the advanced stage， with short survival period and high recurrence rate. Thus， the sensitivity to chemotherapy drugs is decreased. This explains how MDR becomes one of the important reasons for the failure of primary hepatocellular carcinoma （PHC） treatment. Therefore， it is an urgent task to search for safe and effective chemosensitizers with little adverse effect in the research on the drug resistance of hepatocellular carcinoma. As Chinese medicine has been widely applied in the treatment of tumors， the mechanisms of compound Chinese medicine prescriptions， Chinese medicine injections， and single Chinese medicinal in reversing chemotherapy resistance in liver cancer have attracted the interest of scholars. According to previous reports， the mechanisms can be summarized as increasing intracellular drug concentration， influencing changes in enzyme activity， inducing apoptosis， reversing abnormalities in cellular signaling pathways， and regulating the tumor microenvironment. Traditional Chinese medicine reduces the chemotherapy resistance of hepatocellular carcinoma cells through multiple targets and multiple pathways， thereby improving the chemotherapy sensitivity of the cancer cells and enhancing the toxicity of chemotherapeutic drugs to hepatocellular carcinoma cells. Therefore， exploring the mechanism of MDR of hepatocellular carcinoma from the perspective of traditional Chinese medicine is important for reversing the MDR and is of great reference value for clinical treatment of hepatocellular carcinoma. However， there are few experimental types and adverse effects available. Thus， the multi-mechanism and multi-target experiments and clinical research should be carried out in the future.

Objective·To construct a probiotic(Escherichia coli Nissle1917,EcN)system(EcN@PVA-ALG)loaded on polyvinyl alcohol(PVA)/alginate(ALG)hydrogel(PVA-ALG)rich in negative hydroxyl groups,and to explore its colonization in the inflammatory site of colon and its therapeutic effect on dextran sulfate sodium salt(DSS)-induced inflammatory bowel disease(IBD).Methods·EcN suspension was added to the PVA-ALG hydrogel,and then EcN@PVA-ALG hydrogel probiotic complex was obtained after screening and centrifugation.The synthesis of PVA-ALG hydrogel was verified by rheometer.The surface charge of EcN@PVA-ALG was detected by potentiometer and the load of EcN on PVA-ALG was observed by fluorescence microscope.The absorbance of EcN@PVA-ALG at 600 nm was detected by enzyme labeling instrument.Meanwhile,the bacterial plate count of EcN@PVA-ALG complex suspension was taken to study the growth activity of EcN in EcN@PVA-ALG.The CCK-8 kit was used to assess the inhibitory ability of EcN@PVA-ALG on HEK cell proliferation.In vivo imaging system(IVIS)was used to firstly analyze the enrichment of PVA-ALG on inflammatory colon to study its inflammatory targeting property;then EcN was loaded on PVA-ALG,and IVIS was used to observe the enrichment of EcN@PVA-ALG on inflammatory colon to study its ability to colonize the inflammatory site.To establish the model of IBD mice induced by DSS,EcN@PVA-ALG group(n=5)was given 1×108CFU EcN@PVA-ALG every day for 5 d,and PVA-ALG group,EcN group,PBS group and healthy control group with 5 mice were set up.During the treatment,the body mass of the mice was recorded every day.After treatment,the colonic tissue was taken,and the length of colon was measured.The disease activity index(DAI)score was graded.The levels of inflammatory cytokines,including tumor necrosis factor-α(TNF-α),interleukin(IL)-6,IL-10 and transforming growth factor-β(TGF-β)were detected,and the pathological evaluation of colonic tissue was made by H-E staining.Results·Both PVA-ALG and EcN@PVA-ALG were negatively charged.EcN was successfully loaded onto PVA-ALG and PVA-ALG did not affect the growth viability of EcN,which contributed to the subsequent colonization of inflammatory colons.PVA-ALG had a favorable safety profile on normal cells.Compared with healthy controls,PVA-ALG had more than 2-fold enrichment effect on inflammatory colon tissue.In vitro and in vivo experiments revealed that EcN@PVA-ALG complex loaded with EcN had 8 times higher enrichment effect on inflammatory tissue than EcN without any modification.After EcN@PVA-ALG treatment,the body weight of mice recovered rapidly.The increase of DAI was significantly inhibited.The length of colon was similar to that of healthy mice.The levels of TNF-α and IL-6 decreased,while the levels of IL-10 and TGF-β increased.The crypt structure of colon tissue recovered.Conclusion·Compared to unmodified EcN,EcN@PVA-ALG promotes the colonization of EcN at inflammatory sites of colon and allows it to exert better efficacy on treating DSS-induced IBD.

The gastric fundus fornix and upper part of the gastric body pose challenges for endoscopic submucosal dissection (ESD), resulting in unsatisfactory resection outcomes for lesions in these areas,because of the difficulty in the endoscope reaching the lesion site. Drawing inspiration from the formation of α loop during flexible colonoscopy and double-channel multibending gastroscope, a single-channel treatment gastroscope was utilized to create a multibending state (referred to as single-channel endoscope multibending method, SCMB). This method was employed to treat 6 patients with lesions in the stomach at Digestive Endoscopy Center of Affiliated Hospital of Nanjing University of Chinese Medicine from June 2021 to December 2021. There were 3 cases in the gastric fundus fornix, 2 cases in the greater curvature on the upper part of the gastric body, and 1 case in the posterior wall of gastric fundus and subcardia. After 2-3 attempts during surgery, SCMB was successfully performed in all cases within 60-120 seconds. All 6 cases completed successful endoscopic resection within 20-80 minutes without significant complications, including 4 cases of ESD and 2 cases of endoscopic full-thickness resection (EFR). Preliminary results indicate that SCMB method during ESD and its derivative technologies are both safe and effective for lesions in challenging areas where gastric ESD is difficult to perform. During surgery, this approach facilitates the front end of endoscope access to the lesion, providing a clear visual field and a stable dissection plane.

Objective To explore the mechanism by which puerarin alleviates the cardiotoxicity induced by doxorubicin in myocardial cells. Methods Cells in the logarithmic growth phase were divided into normal control group,model group,low-(20 mmol·L-1),medium-(40 mmol·L-1) and high-(80 mmol·L-1) dose puerarin groups,and positive control group(captopril,1 mmol·L-1). Except for the normal control group,the other groups were co-incubated with 5 mmol·L-1 doxorubicin. Cell viability was assessed using CCK-8 and lactate dehydrogenase (LDH) assays. ROS levels were detected using a ROS probe. Autophagy flux was detected by transfection with HBAD-mcherry-EGFP-LC3 adenovirus. Western Blot was used to measure the protein expression levels of Beclin-1,LC3,p62,p-AMPKα,and AMPKα. Lysosomal function was assessed using a lysosomal probe. Immunofluorescence was used to detect the relative intensity and co-localization of ASMase and LAMP1. Molecular docking analysis was performed to predict the binding capacity of PUE with ASMase. Differential gene expression was analyzed by gene set enrichment analysis. Results Compared to the normal control group,the model group showed reduced cell viability (P<0.01),increased release levels of LDH and ROS (P<0.05,P<0.01),increased number of autophagosomes (P<0.01),and decreased number of autophagic lysosomes (P<0.05). Beclin-1 protein expression and LC3-II/LC3-I ratio decreased(P<0.01),but p62 protein expression increased(P<0.01). Fluorescence intensity of lysosome decreased(P<0.01),whereas fluorescence intensity of ASMase increased(P<0.01). Immunofluorescence co-localization of ASMase and LAMP1 increased (P<0.01),the ratio of p-AMPKα/AMPKα decreased(P<0.05). Compared to the model group,the high-dose puerarin group showed a rebound in cell viability (P<0.05). The medium-and high-dose puerarin groups showed a decreasing trend in LDH level (P<0.05),and all puerarin groups showed a decreasing trend in ROS level (P<0.01). The number of autophagosomes in high-dose puerarin group reduced (P<0.01). The number of autophagic lysosomes in all puerarin groups increased (P<0.05,P<0.01). The high-dose puerarin group showed increased expression of Beclin-1 (P<0.05) and LC3-II/LC3-I ratio,and decreased p62 expression (P<0.01). All puerarin groups showed increased lysosomal fluorescence intensity (P<0.05,P<0.01). The medium-and high-dose puerarin groups showed a decrease in ASMase fluorescence intensity(P<0.05),a reduction in the immunofluorescence co-localization of ASMase with LAMP1 (P<0.01),and an increase in the p-AMPKα/AMPKα ratio (P<0.01). Molecular docking analysis discovered puerarin showed a binding energy of-8.6 kcal·mol-1 with ASMase. Gene enrichment analysis indicated that the differentially expressed genes in the doxorubicin cardiotoxicity model were related to apoptosis,autophagy,and lysosomal function. Conclusion Puerarin can alleviate doxorubicin-induced cardiotoxicity in myocardial cells and protect myocardial cells by regulating autophagy through AMPK/ASMase,as well as restoring autophagic flux.

Raman imaging yields high specificity and sensitivity when compared to other imaging modalities, mainly due to its fingerprint signature. However, intrinsic Raman signals are weak, thus limiting medical applications of Raman imaging. By adsorbing Raman molecules onto specific nanostructures such as noble metals, Raman signals can be significantly enhanced, termed surface-enhanced Raman scattering (SERS). Recent years have witnessed great interest in the development of SERS nanoprobes for Raman imaging. Rationally designed SERS nanoprobes have greatly enhanced Raman signals by several orders of magnitude, thus showing great potential for biomedical applications. In this review we elaborate on recent progress in design strategies with emphasis on material properties, modifying factors, and structural parameters.

ObjectiveTo analyze the HIV infection characteristics and influencing factors among the spouses of HIV/AIDS patients in Shanghai. MethodsA cross-sectional survey was conducted to collect demographic， behavioral， epidemiological and spousal HIV detection information of newly reported and married patients with HIV/AIDS in Shanghai from January 2018 to July 2022 in the comprehensive HIV prevention and control information system of Chinese Center for Disease Prevention and Control. Descriptive analysis was used to analyze the HIV positivity rate of the spouses of HIV patients and the influencing factors were analyzed by univariate and multivariate logistic regression models. ResultsA total of 1 233 subjects were investigated， and the first HIV-testing positivity rate of the spouses of HIV/AIDS patients was 29.3% （361/1 233）. There were statistically significant differences in the HIV-testing positivity rate among spouses of HIV/AIDS patients by different age， gender， education level， occupation， transmission route， quantity of non-marital sexual activities， quantity of homo-sexual activities， and baseline CD4 cell count level （P<0.05）. Spouses of the HIV/AIDS patients aged ≥65 years old， female， heterosexual transmission， less non-marital sex， and no history of homosexual sex had relatively high HIV positive rate. The HIV-positive detection rate of spouses in the ≥65 age group was 1.81 times higher than that in the <45 age group. The HIV-positive detection rate of spouses in the female group was 3.66 times higher than that in the male group， and the HIV-positive detection rate of spouses in the homosexual transmission group was 0.25 times higher than that of the heterosexual transmission group. ConclusionRisk awareness of HIV infection among married people with spouses should be improved. The key populations with the characteristics such as females as the first HIV-positive reporter， and heterosexual transmission should be paid special attention.Their spouses should be mobilized to conduct HIV-testing as early as possible