"Double first-class" universities bear the pressure on competitions in scientific research and talents cultivation. Young faculties at these universities commonly face the stress of tenure-track assessment. Many of them are required to engage in part-time counselor work, leveraging their expertise in the value guidance for the students and providing all-round education. This article outlines the formation and development of the part-time counselor system, as well as the importance and necessity of part-time counselors in "double first-class" universities. Taking preventive medicine major of Fudan University as an example, the practical work of part-time counselors are explained. Finally, the responsibility of part-time counselors, as well as shortcomings and prospects of the construction of the part-time counselor team are summarized based on the major characteristics and cultivation goals of preventive medicine major. In a word, part-time counselors play an important role in guiding students' value formation, addressing psychological and life issues, fostering professional identity, mentoring academic research, and engaging in public health practice. In turn, this work deepens young teachers' appreciation of socialist education and strengthens their sense of nationality at the same time. In the future, it is still necessary to further improve the discovery and cultivation of top-notch innovative talents, promote interdisciplinary exchanges, and strengthen public health practice, etc. Strengthen the all-round capacity building of the team of part-time counselors, and accelerate the cultivation of high-quality interdisciplinary public health leaders who serve Healthy China and have an international perspective are of great significance.

ObjectiveTo compare colonoscopy compliance rates under different screening strategies, to explore ways to enhance colonoscopy compliance among residents with colorectal carcinoma. MethodsResidents aged between 50‒80 years were recruited through extensive community outreach and voluntary participation. A total of 210 630 residents who participated in the colorectal carcinoma screening program in Jiading District, Shanghai, between 2013 and 2019 were selected as the research subjects. All subjects underwent a colorectal carcinoma risk assessment questionnaire survey and two fecal occult blood tests (FOBT). Positive results in the initial screening were defined as a positive questionnaire survey or a positive result in at least one FOBT. Participants with positive initial screening results were advised to undergo colonoscopy screening in a hospital. Colonoscopy results were collected from hospital reports and physician follow-ups. Compliance with colonoscopy was analyzed under different screening strategies to identify possible factors influencing residents’ willingness to undergo the procedure. ResultsA total of 21 403 individuals (10.16%) were identified as positive with the questionnaire survey, 31 595 individuals (15.00%) tested positive with at least one FOBT. Combined questionnaire and FOBT positivity was observed in 3 501 individuals (1.66%). Among the 48 453 individuals with positive initial screening results, 17 230 (35.56%) underwent colonoscopy, and a total of 315 cases of colorectal cancer were detected. The sensitivity, specificity value of FOBT initial screening were 83.81% and 84.66%, respectively. According to the combined risk assessment and FOBT initial screening preliminary screening, the lowest colonoscopy compliance rate (25.63%) was observed among individuals with only a positive questionnaire, and the highest compliance rate (52.55%) was among those with both positive questionnaire survey and two positive FOBT results. Multivariate analysis revealed that FOBT positivity had the greatest impact on colonoscopy compliance. Those with one positive FOBT test result were 2.64 times more likely to undergo colonoscopy screening than those with negative FOBT results, while individuals with two positive FOBT results were 3.18 times more likely to do so. After adjusting for FOBT results, individuals with positive questionnaire survey results were 1.43 times more likely to undergo colonoscopy screening than those with negative results (95%CI: 1.34‒1.52). Compared to questionnaire-based risk assessment, FOBT results were more influential in determining compliance with colonoscopy. ConclusionThe choice of initial screening method significantly impacts residents’ compliance with colonoscopy. While implementing colorectal carcinoma screening programs, it is necessary to strictly adhere to screening protocols, including risk assessment and FOBT. Additionally, efforts should be made to raise public awareness, encouraging residents to actively participate in risk assessments and FOBT, thereby improving their compliance with colonoscopy.

Background/Aims: Metabolic dysfunction–associated steatotic liver disease (MASLD) is a chronic liver disease characterized by hepatic steatosis. Ubiquitin-specific protease 29 (USP29) plays pivotal roles in hepatic ischemiareperfusion injury and hepatocellular carcinoma, but its role in MASLD remains unexplored. Therefore, the aim of this study was to reveal the effects and underlying mechanisms of USP29 in MASLD progression. Methods: USP29 expression was assessed in liver samples from MASLD patients and mice. The role and molecular mechanism of USP29 in MASLD were assessed in high-fat diet-fed and high-fat/high-cholesterol diet-fed mice and palmitic acid and oleic acid treated hepatocytes. Results: USP29 protein levels were significantly reduced in mice and humans with MASLD. Hepatic steatosis, inflammation and fibrosis were significantly exacerbated by USP29 deletion and relieved by USP29 overexpression. Mechanistically, USP29 significantly activated the expression of genes related to fatty acid β-oxidation (FAO) under metabolic stimulation, directly interacted with long-chain acyl-CoA synthase 5 (ACSL5) and repressed ACSL5 degradation by increasing ACSL5 K48-linked deubiquitination. Moreover, the effect of USP29 on hepatocyte lipid accumulation and MASLD was dependent on ACSL5. Conclusions USP29 functions as a novel negative regulator of MASLD by stabilizing ACSL5 to promote FAO. The activation of the USP29-ACSL5 axis may represent a potential therapeutic strategy for MASLD.

Background/Aims: Metabolic dysfunction–associated steatotic liver disease (MASLD) is a chronic liver disease characterized by hepatic steatosis. Ubiquitin-specific protease 29 (USP29) plays pivotal roles in hepatic ischemiareperfusion injury and hepatocellular carcinoma, but its role in MASLD remains unexplored. Therefore, the aim of this study was to reveal the effects and underlying mechanisms of USP29 in MASLD progression. Methods: USP29 expression was assessed in liver samples from MASLD patients and mice. The role and molecular mechanism of USP29 in MASLD were assessed in high-fat diet-fed and high-fat/high-cholesterol diet-fed mice and palmitic acid and oleic acid treated hepatocytes. Results: USP29 protein levels were significantly reduced in mice and humans with MASLD. Hepatic steatosis, inflammation and fibrosis were significantly exacerbated by USP29 deletion and relieved by USP29 overexpression. Mechanistically, USP29 significantly activated the expression of genes related to fatty acid β-oxidation (FAO) under metabolic stimulation, directly interacted with long-chain acyl-CoA synthase 5 (ACSL5) and repressed ACSL5 degradation by increasing ACSL5 K48-linked deubiquitination. Moreover, the effect of USP29 on hepatocyte lipid accumulation and MASLD was dependent on ACSL5. Conclusions USP29 functions as a novel negative regulator of MASLD by stabilizing ACSL5 to promote FAO. The activation of the USP29-ACSL5 axis may represent a potential therapeutic strategy for MASLD.

Background/Aims: Metabolic dysfunction–associated steatotic liver disease (MASLD) is a chronic liver disease characterized by hepatic steatosis. Ubiquitin-specific protease 29 (USP29) plays pivotal roles in hepatic ischemiareperfusion injury and hepatocellular carcinoma, but its role in MASLD remains unexplored. Therefore, the aim of this study was to reveal the effects and underlying mechanisms of USP29 in MASLD progression. Methods: USP29 expression was assessed in liver samples from MASLD patients and mice. The role and molecular mechanism of USP29 in MASLD were assessed in high-fat diet-fed and high-fat/high-cholesterol diet-fed mice and palmitic acid and oleic acid treated hepatocytes. Results: USP29 protein levels were significantly reduced in mice and humans with MASLD. Hepatic steatosis, inflammation and fibrosis were significantly exacerbated by USP29 deletion and relieved by USP29 overexpression. Mechanistically, USP29 significantly activated the expression of genes related to fatty acid β-oxidation (FAO) under metabolic stimulation, directly interacted with long-chain acyl-CoA synthase 5 (ACSL5) and repressed ACSL5 degradation by increasing ACSL5 K48-linked deubiquitination. Moreover, the effect of USP29 on hepatocyte lipid accumulation and MASLD was dependent on ACSL5. Conclusions USP29 functions as a novel negative regulator of MASLD by stabilizing ACSL5 to promote FAO. The activation of the USP29-ACSL5 axis may represent a potential therapeutic strategy for MASLD.

Objective: To analyze the epidemiological characteristics and changing trends of non suicidal self injury (NSSI) behaviors among middle school students in Jiading District of Shanghai, from 2015 to 2023, so as to provide a basis for the development of NSSI prevention and control measures among students. Methods: Using a stratified cluster random sampling method, a total of five times for Shanghai Adolescent Health Risk Behavior Surveys were conducted for every two years in Jiading District of Shanghai from 2015 to 2023. A total of 5 231 middle school students from junior high schools and senior high schools were selected for questionnaire surveys. Intergroup comparisons were performed using the x 2 test or the χ 2 trend test, and the JointPoint 5.0 software was used to analyze the changing trends, with the annual percent change (APC) used for evaluation. A binary Logistic regression model was employed to analyze the related factors of NSSI behavior among middle school students. Results: In 2023, the reported NSSI rate among middle school students in Jiading District was 14.2%. The rate was significantly higher among junior high school students (17.1%) than that among senior high school students (11.1%), and higher among females (19.2%) than that among males (10.0%) ( χ 2=10.04, 23.21, both P <0.01). From 2015 to 2023, the overall reported NSSI rate showed an increasing trend, rising from 8.6% in 2015 to 14.2% in 2023 ( χ 2 trend =22.25), with an APC of 6.64% ( t =3.49), and the APC for girls was 9.79 % ( t =3.20) (all P <0.05). Among students reporting NSSI, the proportion experiencing ≥6 episodes increased from 10.8% in 2015 to 19.2% in 2023 ( χ 2 trend =6.57, P <0.05). Multivariate Logistic regression analysis indicated that girls, junior high school students, those with insomnia, depressive emotion and drinkers had higher risks of NSSI, compared to boys, senior high school students, those without insomnia, non depressive emotion students and non drinkers ( OR =1.71, 1.96, 3.44, 4.76, 1.77, all P < 0.05 ). Conclusions The reported rate of NSSI among middle school students in Jiading District of Shanghai, increased annually from 2015 to 2023, and the proportion of repeated NSSI also showed an upward trend. Early intervention measures targeting middle school students, especially junior high school students and females, should be implemented to prevent and control its occurrence and development.

BACKGROUND:Diabetic wounds have complicated conditions such as infection,ischemia,peripheral neuropathy,and vascular disease.Ordinary hydrogel dressings with single structure and function cannot meet the needs of diabetic wound healing. OBJECTIVE:To explore the effect of a hydrogel loaded with platelet-rich plasma on wound healing of full-thickness skin defects in diabetic rats. METHODS:The blood of SD rats was extracted to prepare platelet-rich plasma.Carboxymethyl chitosan/oxychondroitin sulfate hydrogel and carboxymethyl chitosan/oxychondroitin sulfate hydrogel loaded with platelet-rich plasma were prepared separately.Streptozotocin was used to induce diabetes model in adult male SD rats.A round full-thickness skin wound with a diameter of 2 cm was made on the back of diabetic rats.The rats were randomly divided into four groups(n=10 per group).The blank group was applied with gauze on the wound.The hydrogel group,platelet-rich plasma group,and composite hydrogel group were respectively applied with the corresponding hydrogel,platelet-rich plasma and hydrogel loaded with platelet-rich plasma.The wound healing was observed within 20 days after treatment. RESULTS AND CONCLUSION:(1)On day 20 after treatment,the wound healing rate of the hydrogel group,platelet-rich plasma group and composite hydrogel group was significantly higher than that of the blank group(P<0.05).The wound healing rate of the composite hydrogel group was significantly higher than that of the platelet-rich plasma group(P<0.05).(2)The results of hematoxylin-eosin staining on day 5 after treatment showed that compared with the blank group,hydrogel group and platelet-rich plasma group,there were a large number of inflammatory cell infiltration,new granulation tissue and capillary formation in the wound tissue of the composite hydrogel group.(3)On day 5 after treatment,the results of immunohistochemical staining and western blot assay showed that the expression levels of tumor necrosis factor α and interleukin 1β in wound tissue in the composite hydrogel group were significantly lower than those in the blank group,hydrogel group and platelet-rich plasma group(P<0.05).(4)Masson staining results on day 15 after treatment showed that compared with the blank group,hydrogel group and platelet-rich plasma group,there were more collagen fibers in the wound tissue of the composite hydrogel group,which were orderly,evenly distributed and dense.(5)CD31 immunofluorescence staining showed that on day 15 after treatment,the expression of CD31 in wound tissue of the composite hydrogel group was significantly higher than that of the blank group,hydrogel group and platelet-rich plasma group(P<0.05).(6)These results suggest that the hydrogel loaded with platelet-rich plasma can promote the healing of full-thickness skin defect wounds in diabetic rats by promoting granulation tissue,collagen fiber and angiogenesis,and reducing the inflammatory response.

Objective:To investigate the significance of small intestinal manometry in clinical diagnosis and treatment of patients with gastrointestinal motility disorders.Methods:The clinical data of 20 suspected patients with gastrointestinal motility disorders from February 2019 to January 2020 in Shanghai Jiaotong University Affiliated Ninth People′s Hospital were retrospectively analyzed. All patients were performed small intestinal manometry, and the influence on diagnosis and treatment as well as the clinical value of this technique were analyzed.Results:Among the 20 patients, 18 patients successfully accepted small intestinal manometry. Among the 18 patients, 14 patients showed significant motility abnormalities, among which 9 patients showed significant nutritional improvement after treatment and 5 patients were treated with maintaining nutritional support. In 10 patients, small intestinal manometry served as a deciding diagnostic tool, and in 12 patients, major modifications of treatment strategy were made according to results of small intestinal manometry.Conclusions:The small intestinal manometry significantly improves diagnosis and treatment decision in the patients with gastrointestinal motility disorders and shows great value on the clinical practice on this group of patients.

Objective:To investigate the clinical characters of enteric dysmotility (ED), in order to improve clinical diagnosis and treatment capabilities.Methods:The clinical data of 13 ED patients underwent small intestinal manometry from August 2019 to July 2022 in the Shanghai Jiaotong University Affiliated Ninth People′s Hospital and the Fourth Affiliated Hospital of Nanjing Medical University were retrospectively analyzed, including the clinical manifestation, small intestinal manometry result, treatment and prognosis.Results:Among 13 patients, 1 abnormality was presented in 9 cases, 2 abnormalities presented in 2 cases and 3 abnormalities presented in 2 cases. All 13 cases presented a history of constipation, 5 cases started with constipation and underwent subtotal colectomy. Three patients showed severe chronic abdominal pain with one of them opiate dependence. Eight patients underwent surgical treatment, all of which achieved nutritional improvement and symptom relief.Conclusions:ED is a concisely defined disease with clear diagnostic criteria. The surgery can increase the symptoms of some patients.

Hydration status refers to the balance between the intake and discharge of water in the body. When the ingested and discharged water are roughly equal and the body is in water balance, it is the normal hydration status, and when the water intake is too little or too much, it is the "dehydration" or "overhydration status". The hydration status of the body not only affects metabolism, but also affects the functions of the urinary system, cardiovascular system, nervous system, etc. In order to further clarify the relationship between body hydration status and decompression sickness (DCS), this paper reviewed relevant studies and analyzed the interaction between hydration and decompression safety during diving. The primary causes of dehydration in diving are "hyperbaric diuresis", "immersion diuresis", breathing dry gas, heat, and cold. Dehydration not only promotes the occurrence of DCS but also reduces the aerobic work efficiency and athletic performance of divers, as well as affects cognition and mood. A study found that appropriate rehydration before and during diving can reduce the risk of DCS, which possibly associates with the increase of blood volume, plasma surface tension, and vasoconstriction. Fluid therapy is also important for those who already have DCS. This paper analyzed the amount, nature, timing, and effect of rehydration involved in the above links, comprehensively sorted out the relationship between hydration and diving safety, summarized the existing problems, and provided reference for practical application and future research.