To further improve the post competency of application-oriented medical students, the university medical simulation center, clinical teaching base, and off-campus social practice base were linked to establish a platform. Four key points were used to explore a new training model of "one body and four bases" for application-oriented medical students. This includes problem-oriented theoretical teaching to improve the professional knowledge of medical students, hands-on practice-oriented experimental teaching to improve the clinical skills, "strengthening clinical thinking training"-oriented practice in the base to enhance clinical awareness and cultivate clinical habits, and "cultivating humanistic literacy"-oriented off-campus social practice base to improve the humanistic sentiment and professional spirit of medical students. This teaching mode lays a foundation for training high-quality application-oriented medical talents with solid knowledge and skills and comprehensive development of ability and literacy, and provides a reference for teaching and research in similar colleges and universities.

OBJECTIVE The regression equation of cognitive impairment in patients with obstructive sleep apnea hypopnea syndrome(OSAHS)was constructed based on Logistic regression analysis,to lay a foundation for the prevention of cognitive impairment in OSAHS patients.METHODS A total of 302 OSAHS patients admitted to Huai'an First People's Hospital from October 2022 to October 2024 were selected for the study,and the cognitive impairment group(n=83)and the non-cognitive impairment group(n=219)were included according to the occurrence of cognitive impairment.The status quo of OSAHS patients complicated with cognitive impairment was analyzed,univariate and multivariate Logistic regression was used to analyze the early warning factors of OSAHS combined with cognitive impairment,regression equation was established,and receiver operating characteristic(ROC)curve was drawn to analyze the predictive value of regression equation on OSAHS combined with cognitive impairment.RESULTS Among 302 OSAHS patients,83 cases were complicated with cognitive impairment(27.48%).Multivariate Logistic analysis showed that age increase,physical exercise<3 times/week,apnea hypopnea index increase,longest apnea duration prolongation,serum levels of neuropeptide Y(NPY)increase were early warning factors of OSAHS combined with cognitive impairment.The increase of minimum blood oxygen saturation and serum gamma-aminobutyric acid(GABA)were protective factors of OSAHS combined with cognitive impairment(P<0.05).The above factors were included in the regression equation:logit(P)=-1.875+age×0.059+physical exercise<3 times/week×0.041+apnea hypopnea index×0.031+longest apnea duration×0.073-minimum blood oxygen saturation×0.081+NPY×0.043-GABA×0.049.The regression equation was evaluated,and the likelihood ratio of Chi-square=7.632,DF=7,P<0.001,the regression equation was statistically significant.Patients with OSAHS combined with cognitive impairment were included as positive,while those OSAHS without cognitive impairment were included as negative.The ROC curve for predicting OSAHS combined with cognitive impairment was drawn according to the regression equation.The results showed that when logit(P)>2.02,the area under the curve(AUC)was 0.896.The diagnostic sensitivity and specificity were 85.54%and 83.56%respectively.CONCLUSION OSAHS patients with cognitive impairment were not optimistic,early warning factors included increasing age,less than 3 times/week of physical exercise,increased apnea hypopnea index,prolonged longest apnea time,elevated serum NPY,protective factors included elevated minimum blood oxygen saturation and elevated serum GABA,the regression equation constructed on this basis had good predictive value.

Objective Cheng's Juanbi Decoction(CSJBD)is a classic traditional Chinese medicine formula for treating rheumatoid arthritis(RA),exhibiting significant clinical efficacy,but the underlying mechanisms remain unclear.We investigated whether CSJBD inhibited RA pathology by blocking the WTAP-Wnt7b-Wnt/β-catenin signaling axis using a collagen-induced arthritis(CIA)mouse model and fibroblast-like synoviocytes(FLSs)derived from RA patients(RA FLSs)and examined the underlying mechanisms.Methods We conducted in vivo experiments.Male C57BL/6 mice weighing 17 to 20 g were used to establish the CIA model.The mice were assigned to 6 groups,including the normal group,the model(CIA)group,the model+CSJBD-L(8.1 g/kg)group,the model+CSJBD-M(16.2 g/kg)group,the model+CSJBD-H(32.4 g/kg)group,and the model+leflunomide(LEF)(0.05 mg/10 g)group,with 10 mice in each group.CSJBD was administered twice daily via gastric gavage,while LEF was administered once daily via gastric gavage,for a duration of 28 days.We also conducted in vitro experiments.RA FLSs were assigned to 4 groups,including the RA FLSs+CSJBDS-L group receiving 10%CSJBDS-containing serum,the RA FLSs+CSJBDS-M group receiving 15%CSJBDS-containing serum,the RA FLSs+CSJBDS-H group receiving 20%CSJBDS-containing serum,and the RA FLSs+NC group(negative control).To study whether WTAP regulated Wnt7b,RA FLSs were divided into the RA FLSs group,the RA FLSs+si-WTAP#3 group,the RA FLSs+si-WTAP#3+Wnt7b-OE group,and the RA FLSs+si-WTAP#3+Wnt7b-NC group.To study the underlying mechanism by which CSJBT affected RA FLSs,RA FLSs were divided into the RA FLSs group,the RA FLSs+CSJBDS-M group,the RA FLSs+CSJBDS-M+Wnt7b-OE group,and the RA FLSs+CSJBDS-M+NC group.We used ultra-high performance liquid chromatography(UPLC)to identify and quantify key monomer compounds from CSJBD as quality criteria for CSJBD preparation.Bioinformatics,CCK-8,RT-qPCR,Western blot,immunofluorescence,and related methods were employed to assess the therapeutic efficacy and underlying mechanisms of CSJBD in treating RA.Results According to the UPLC analysis,ferulic acid,osthole,mulberroside A,notopterol,and gentiopicroside were identified as quality control standards for the preparation of CSJBD formula.CSJBD improved RA pathology in CIA mice,reduced the levels of interleukin(IL)-6,IL-1β,IL-8,and tumor necrosis factor-α(TNF-α)in their serum,and decreased the expression of RA pathological genes MMP3 and fibronectin,with the difference between groups being statistically significant.Bioinformatics analysis suggested that CSJBD might inhibit RA pathology by suppressing the Wnt/β-catenin signaling pathway through Wnt7b.Experimental results showed that the expression of WTAP and Wnt7b was significantly increased in RA.After knocking down WTAP,the expression of Wnt7b was significantly reduced,and the Wnt/β-catenin signaling pathway was also inhibited,with the difference between groups being statistically significant(P<0.05),confirming that WTAP regulated the pathway via Wnt7b.According to experimental verification,CSJBD significantly inhibited the Wnt/β-catenin signaling pathway and the proliferation of RA FLSs.Wnt7b overexpression reversed the inhibitory effect of CSJBD on the Wnt/β-catenin signaling pathway and the proliferation of RA FLSs,indicating that Wnt7b is the direct target of CSJBD.Conclusion CSJBD inhibits RA pathology by blocking the WTAP-Wnt7b-Wnt/β-catenin signaling axis,with Wnt7b identified as a direct therapeutic target of CSJBD.

BACKGROUND: Chronic kidney disease (CKD) is associated with common pathophysiological processes, such as inflammation and fibrosis, in both the heart and the kidney. However, the underlying molecular mechanisms that drive these processes are not yet fully understood. Therefore, this study focused on the molecular mechanism of heart and kidney injury in CKD. METHODS: We generated an microRNA (miR)-26a knockout (KO) mouse model to investigate the role of miR-26a in angiotensin (Ang)-II-induced cardiac and renal injury. We performed Ang-II modeling in wild type (WT) mice and miR-26a KO mice, with six mice in each group. In addition, Ang-II-treated AC16 cells and HK2 cells were used as in vitro models of cardiac and renal injury in the context of CKD. Histological staining, immunohistochemistry, quantitative real-time polymerase chain reaction (PCR), and Western blotting were applied to study the regulation of miR-26a on Ang-II-induced cardiac and renal injury. Immunofluorescence reporter assays were used to detect downstream genes of miR-26a, and immunoprecipitation was employed to identify the interacting protein of LIM and senescent cell antigen-like domain 1 (LIMS1). We also used an adeno-associated virus (AAV) to supplement LIMS1 and explored the specific regulatory mechanism of miR-26a on Ang-II-induced cardiac and renal injury. Dunnett's multiple comparison and t -test were used to analyze the data. RESULTS: Compared with the control mice, miR-26a expression was significantly downregulated in both the kidney and the heart after Ang-II infusion. Our study identified LIMS1 as a novel target gene of miR-26a in both heart and kidney tissues. Downregulation of miR-26a activated the LIMS1/integrin-linked kinase (ILK) signaling pathway in the heart and kidney, which represents a common molecular mechanism underlying inflammation and fibrosis in heart and kidney tissues during CKD. Furthermore, knockout of miR-26a worsened inflammation and fibrosis in the heart and kidney by inhibiting the LIMS1/ILK signaling pathway; on the contrary, supplementation with exogenous miR-26a reversed all these changes. CONCLUSIONS Our findings suggest that miR-26a could be a promising therapeutic target for the treatment of cardiorenal injury in CKD. This is attributed to its ability to regulate the LIMS1/ILK signaling pathway, which represents a common molecular mechanism in both heart and kidney tissues.
Animals ; MicroRNAs/metabolism* ; Angiotensin II/toxicity* ; Mice ; Renal Insufficiency, Chronic/chemically induced* ; Mice, Knockout ; Disease Models, Animal ; Male ; Signal Transduction/genetics* ; LIM Domain Proteins/genetics* ; Mice, Inbred C57BL ; Cell Line ; Humans

Objective To evaluate the acute toxicity and acute eye irritation of hydroquinone. Methods i) Acute toxicity test. Specific pathogen-free (SPF) Kunming mice were randomly divided into four dose groups, 10 mice per group with equal number of males and females. Hydroquinone was administered as a single exposure via oral gavage and intraperitoneal injection at doses of 0.00, 100.00, 250.00, and 500.00 mg/kg body weight. The mice were observed for 14 days. The toxic symptoms were recorded, and median lethal dose (LD₅₀) was calculated. ii) In vitro eye irritation test. Fertilized chicken embryos were randomly divided into four dose groups, with six embryos in each group. The chorioallantoic membrane (CAM) assay was used to evaluate the acute eye irritation potential of hydroquinone in vitro. iii) SPF Kunming mice were randomly divided into three doses groups, 10 mice per group with equal numbers of males and females. Hydroquinone was administered via tail vein injection at doses of 0.00, 25.00, and 50.00 mg/kg body weight. Blood alanine aminotransferase (ALT), aspartate aminotransferase (AST), methemoglobin (MetHb), and cholinesterase levels were measured using colorimetric methods after one hour exposure. Organ coefficients of the heart, liver, spleen, lungs, and kidneys in mice were calculated. Results i) Following oral administration of 500.00 mg/kg body weight hydroquinone, the mice rapidly developed severe toxic symptoms, including agitation, cyanosis of the lips, eye closure, and limb convulsions. Trunk rigidity and curling occurred within 15-60 mins, ended up with death. After intraperitoneal injection at 500.00 mg/kg body weight hydroquinone, toxic reactions occurred more rapidly, with all mice died within five mins. The LD₅₀ values for acute oral and intraperitoneal exposure were 356.64 and 275.90 mg/kg body weight, respectively. Female mice had higher LD₅₀ values for acute intraperitioneal exposure than males (316.58 vs 276.38 mg/kg body weight). ii) The in vitro eye irritation test results showed an irritation score of 3.05 at a dose of 100.00 mg/kg body weight, indicating mild eye irritation, accompanied by vascular congestion and edema in the embryos. iii) Tail vein injection results showed that mouse serum ALT activity increased with increasing hydroquinone doses (all P<0.05), and ALT activity was higher in males than in females (P<0.01). Serum AST activity of mice in the 25.00 and 50.00 mg/kg body weight groups was higher than that in the 0.00 mg/kg body weight group (both P<0.05). With increasing hydroquinone-exposed doses, whole bood MetHb levels increased and cholinesterase activity decreased in both male and female mice (both P<0.05). Male mice had higher MetHb levels than females at corresponding doses among 25.00 and 50.00 mg/kg body weight groups (all P<0.05). Serum cholinesterase levels in male mice were higher than that in females at corresponding doses among 0.00 and 25.00 mg/kg body weight groups (both P<0.05). As the hydroquinone exposure dose increased, the liver organ coefficients decreased in both female and male mice (both P<0.05). The liver organ coefficient in male mice at the 50.00 mg/kg body weight group was higher than that in female mice (P<0.05). Compared to mice of the same sex in the 25.00 mg/kg body weight group, the kidney organ coefficients decreased in both female and male mice in the 0.00 mg/kg body weight group (all P<0.05), and decreased in the 50.00 mg/kg body weight group (all P<0.05). The male mice had lower kidney organ coefficient than female mice at 25.00 mg/kg body weight group (P<0.05). Conclusion Hydroquinone is classified as a moderately toxic substance. Increasing exposure doses result in pronounced eye irritation and affect hepatic and renal functions of mice.

Objective:To investigate the value of quantitative parameters of dual-layer detector spectral CT (DLCT) in preoperative prediction of lymphovascular invasion (LVI) in invasive lung adenocarcinoma.Methods:This study employed a cross-sectional design. The data of 91 patients with primary lung adenocarcinoma confirmed by postoperative pathology who underwent DLCT enhanced scanning in the First Affiliated Hospital of Zhengzhou University from March 2022 to July 2024 were retrospectively collected. The patients were divided into LVI positive group and LVI negative group according to the postoperative pathology. Gender, age, smoking status, and lesion location were recorded,the clinical T-stage and N-stage were evaluated. Spectral base data images were generated based on the spectral reconstruction algorithm. Conventional CT features such as the size and density of the lesions were analyzed. The DLCT quantitative parameters such as 40 keV single-energy CT value (CT 40 keV), iodine density (ID), standardized iodine density (NID), and effective atomic number (Z eff) were measured. The differences of parameters between the two groups were compared using t-test, Mann-Whitney U test, or χ2 test. Multivariate logistic regression analysis was used to identify independent factors for predicting invasive lung adenocarcinoma LVI. The predictive performance of individual parameters and their combinations for LVI in invasive lung adenocarcinoma was evaluated using receiver operating characteristic curve analysis and area under the curve (AUC) measurements. Results:There were significant differences in age, T stage, N stage, maximum diameter, focal density, and arteriovenous stage NID and Z eff between the LVI positive group and the LVI negative group ( P<0.05). Multiple logistic regression analysis showed that age ( OR=0.890, 95% CI 0.821-0.966), N stage( OR=12.721, 95% CI 2.676-60.473) and venous stage Z eff( OR=0.012,95% CI 0-0.668) were independent factors for predicting invasive lung adenocarcinoma LVI ( P<0.05). The combination of age, N stage, and venous-phase Z eff values demonstrated the highest predictive efficacy for LVI in invasive lung adenocarcinoma, with an AUC of 0.916. Conclusions:The quantitative parameters of DLCT are helpful for preoperative prediction of LVI status of invasive lung adenocarcinoma. The Z eff in the venous stage is an independent predictor, the combination of multiple parameters can further improve the diagnostic efficiency.

Objective To construct a regional collaborative cloud-based treatment model treatment model for patients with severe road traffic injuries,and to preliminarily evaluate the differences in nursing timeliness indicators and outcomes.Methods The regional collaborative cloud-based treatment platform includes 4 ports,including public security traffic police,pre-hospital emergency center,regional trauma center triage,and regional trauma center resuscitation unit.This forms a standardized real-time interactive treatment process between regional medical services and police for patients with severe road traffic injuries.Using a concurrent control study design,241 patients with severe road traffic injuries admitted to the emergency department of a regional trauma center in Zhejiang Province from May 2022 to May 2024 were selected as the study subjects.Among them,120 patients treated with the regional real-time collaborative cloud-based treatment model were designated as an experimental group,while 121 patients treated with the original trauma care process were designated as a control group.The differences in timeliness indicators and outcomes between the 2 groups were compared.Results The study included 241 patients with severe trauma.After the application of the regional collaborative cloud-based treatment model,the time from the scene of the accident to the hospital,the proportion of information early waming,completion time of pre-examination and triage,waiting time of the trauma team,the time of the first CT,the length of multidisciplinary consultation,and the time for completing hospitalization procedures in the experimental group were shorter than those in the control group(P＜0.05),the proportion of information early waming in the experimental group was 100％(120/120),and the proportion of information early waming in the control group was 52.1％(63/121).The difference between the two groups was statistically significant(P＜0.001).The survival rate of the experimental group was 90.8％(109/120),and that of the control group was 86.0％(104/121).There was no significant difference between the two groups(x2=1.399,P=0.237).Conclusion The regional collaborative cloud-based treatment model improves the timeliness and standardization of the treatment of patients with severe road traffic injury,which has certain reference significance and promotion value.

This report summarizes the emergency care and nursing interventions for a Parkinson's disease patient with severe hypothermia complicated by ventricular arrhythmia.Key nursing points included continuous core temperature monitoring with goal-directed,phased,progressive rewarming;proactive identification and rapid response to arrhythmias;precise fluid management and skin protection to dynamically optimize blood perfusion and pressure redistribution;vigilant prevention and early intervention of hypothermia-related complications.With multidisciplinary treatment and meticulous nursing care,the patient was successfully discharged after 17 days of hospitalization with a favorable recovery.At the three-month follow-up after discharge,the patient had recovered well with no recurrence of similar episodes.

To further improve the post competency of application-oriented medical students, the university medical simulation center, clinical teaching base, and off-campus social practice base were linked to establish a platform. Four key points were used to explore a new training model of "one body and four bases" for application-oriented medical students. This includes problem-oriented theoretical teaching to improve the professional knowledge of medical students, hands-on practice-oriented experimental teaching to improve the clinical skills, "strengthening clinical thinking training"-oriented practice in the base to enhance clinical awareness and cultivate clinical habits, and "cultivating humanistic literacy"-oriented off-campus social practice base to improve the humanistic sentiment and professional spirit of medical students. This teaching mode lays a foundation for training high-quality application-oriented medical talents with solid knowledge and skills and comprehensive development of ability and literacy, and provides a reference for teaching and research in similar colleges and universities.

Objective:To investigate the value of quantitative parameters of dual-layer detector spectral CT (DLCT) in preoperative prediction of lymphovascular invasion (LVI) in invasive lung adenocarcinoma.Methods:This study employed a cross-sectional design. The data of 91 patients with primary lung adenocarcinoma confirmed by postoperative pathology who underwent DLCT enhanced scanning in the First Affiliated Hospital of Zhengzhou University from March 2022 to July 2024 were retrospectively collected. The patients were divided into LVI positive group and LVI negative group according to the postoperative pathology. Gender, age, smoking status, and lesion location were recorded,the clinical T-stage and N-stage were evaluated. Spectral base data images were generated based on the spectral reconstruction algorithm. Conventional CT features such as the size and density of the lesions were analyzed. The DLCT quantitative parameters such as 40 keV single-energy CT value (CT 40 keV), iodine density (ID), standardized iodine density (NID), and effective atomic number (Z eff) were measured. The differences of parameters between the two groups were compared using t-test, Mann-Whitney U test, or χ2 test. Multivariate logistic regression analysis was used to identify independent factors for predicting invasive lung adenocarcinoma LVI. The predictive performance of individual parameters and their combinations for LVI in invasive lung adenocarcinoma was evaluated using receiver operating characteristic curve analysis and area under the curve (AUC) measurements. Results:There were significant differences in age, T stage, N stage, maximum diameter, focal density, and arteriovenous stage NID and Z eff between the LVI positive group and the LVI negative group ( P<0.05). Multiple logistic regression analysis showed that age ( OR=0.890, 95% CI 0.821-0.966), N stage( OR=12.721, 95% CI 2.676-60.473) and venous stage Z eff( OR=0.012,95% CI 0-0.668) were independent factors for predicting invasive lung adenocarcinoma LVI ( P<0.05). The combination of age, N stage, and venous-phase Z eff values demonstrated the highest predictive efficacy for LVI in invasive lung adenocarcinoma, with an AUC of 0.916. Conclusions:The quantitative parameters of DLCT are helpful for preoperative prediction of LVI status of invasive lung adenocarcinoma. The Z eff in the venous stage is an independent predictor, the combination of multiple parameters can further improve the diagnostic efficiency.