ObjectiveTo compare the morphological characteristics， phenological stages， and chemical components of two traditional Chaenomeles speciosa cultivars—"Luohanqi" and "Pingguohong"， thus providing a basis for new cultivar breeding， standardized cultivation， and quality evaluation of authentic medicinal materials. MethodsThe morphological indices of leaves， floral organs， and fruits of the two cultivars were measured， and the phenological sequences were recorded. Microplate assays and high-performance liquid chromatography （HPLC） were employed to determine the levels of total flavonoids， total phenols， polysaccharides， amino acids， oleanolic acid， and ursolic acid. Finally， comprehensive comparative analysis was conducted. ResultsThe two cultivars exhibited generally similar tree vigor but showed significant differences in internode length， leaf morphology， floral organs， fruit development， and phenological stages. "Luohanqi" had significantly larger leaves ［length： （124.7±11.97） mm vs. （105.06±9.16） mm； width： （47.81±4.68） mm vs. （41.98±5.15） mm］， a wider ovary diameter ［（10.76±1.25） mm vs. （8.28±1.18） mm］， a higher fruit shape index （1.6 vs. 1.2）， and a much higher calyx persistence rate （78.28% vs. 8.02%） than "Pingguohong". Its phenological stages were 7-18 days later than those of "Pingguohong". No significant differences were found in the levels of total flavonoids， total phenols， total polysaccharides， total amino acids， or oleanolic acid， while "Pingguohong" had significantly higher ursolic acid content than "Luohanqi". ConclusionThe two main cultivars of C. speciosa in Xuancheng city， Anhui province exhibit marked differences in leaf morphology， floral organ structure， fruit traits， calyx persistence， phenological stages， and chemical composition. These findings provide a scientific basis for subsequent breeding of new cultivars， targeted cultivation， and studies on quality formation of authentic medicinal materials.

ObjectiveTo compare the morphological characteristics， phenological stages， and chemical components of two traditional Chaenomeles speciosa cultivars—"Luohanqi" and "Pingguohong"， thus providing a basis for new cultivar breeding， standardized cultivation， and quality evaluation of authentic medicinal materials. MethodsThe morphological indices of leaves， floral organs， and fruits of the two cultivars were measured， and the phenological sequences were recorded. Microplate assays and high-performance liquid chromatography （HPLC） were employed to determine the levels of total flavonoids， total phenols， polysaccharides， amino acids， oleanolic acid， and ursolic acid. Finally， comprehensive comparative analysis was conducted. ResultsThe two cultivars exhibited generally similar tree vigor but showed significant differences in internode length， leaf morphology， floral organs， fruit development， and phenological stages. "Luohanqi" had significantly larger leaves ［length： （124.7±11.97） mm vs. （105.06±9.16） mm； width： （47.81±4.68） mm vs. （41.98±5.15） mm］， a wider ovary diameter ［（10.76±1.25） mm vs. （8.28±1.18） mm］， a higher fruit shape index （1.6 vs. 1.2）， and a much higher calyx persistence rate （78.28% vs. 8.02%） than "Pingguohong". Its phenological stages were 7-18 days later than those of "Pingguohong". No significant differences were found in the levels of total flavonoids， total phenols， total polysaccharides， total amino acids， or oleanolic acid， while "Pingguohong" had significantly higher ursolic acid content than "Luohanqi". ConclusionThe two main cultivars of C. speciosa in Xuancheng city， Anhui province exhibit marked differences in leaf morphology， floral organ structure， fruit traits， calyx persistence， phenological stages， and chemical composition. These findings provide a scientific basis for subsequent breeding of new cultivars， targeted cultivation， and studies on quality formation of authentic medicinal materials.

Objective:To investigate the predictive value of serum matrix metalloproteinase-9 (MMP-9), fatty acid-binding protein 5 (FABP5) combined with MRI for the efficacy and recurrence of primary liver cancer after percutaneous radiofrequency ablation.Methods:A total of 192 patients with primary liver cancer who underwent percutaneous radiofrequency ablation treatment at the First Affiliated Hospital of Air Force Medical University from June 2022 to May 2023 were selected as the research subjects. MRI examination was performed within one week before the treatment, and the apparent diffusion coefficient (ADC) value was recorded. The enzyme-linked immunosorbent assay (ELISA) was used to determine the levels of MMP-9 and FABP5 in the serum. According to the results of MRI examination, the ablation status of the lesions was determined, and the patients were divided into a complete ablation group ( n=157) and a residual lesion group ( n=35). Patients with completely ablated lesions were regularly followed up for one year, and their recurrence status was recorded. According to the recurrence of the patients, the patients were divided into a non-recurrence group ( n=115) and a recurrence group ( n=42). The levels of MMP-9 and FABP5 and the ADC values of the patients in the complete ablation group and the residual lesion group, as well as those in the non-recurrence group and the recurrence group, were compared. The receiver operator characteristic (ROC) curve was used to evaluate the predictive value of serum MMP-9 and FABP5 combined with MRI for the postoperative efficacy and recurrence of the patients. Results:The levels of serum MMP-9 and FABP5, and the ADC value of patients in the complete ablation group were (181.05±29.68) ng/ml, (7.95±1.82) μg/L, and (1.32±0.45) ×10 -3 mm 2/s, respectively, while those in the residual lesion group were (202.18±35.06) ng/ml, (9.56±2.39) μg/L, and (0.75±0.23) ×10 -3 mm 2/s, respectively. The levels of MMP-9 and FABP5 in the complete ablation group were significantly lower than those in the residual lesion group, and the ADC value was significantly higher than that in the residual lesion group, with statistically significant differences ( t=3.68, P<0.001; t=4.45, P<0.001; t=7.27, P<0.001). The areas under the curve (AUC) of serum MMP-9, FABP5, and ADC value alone in predicting the postoperative efficacy of patients were 0.68 (95% CI: 0.61-0.75), 0.75 (95% CI: 0.68-0.81), and 0.90 (95% CI: 0.85-0.94), respectively. The AUC of the combined prediction of these three was 0.94 (95% CI: 0.89-0.97), and the combined prediction of these three was superior to the individual prediction of MMP-9, FABP5, and ADC value ( Z=5.72, P<0.001; Z=4.84, P<0.001; Z=2.29, P=0.022). The levels of serum MMP-9 and FABP5, and the ADC value of patients in the non-recurrence group were (176.52±30.28) ng/ml, (8.69±1.92) μg/L, and (1.35±0.29) ×10 -3 mm 2/s, respectively, while those in the recurrence group were (201.85±28.72) ng/ml, (11.05±2.86) μg/L, and (1.14±0.12) ×10 -3 mm 2/s, respectively. The levels of serum MMP-9 and FABP5 of patients in the non-recurrence group were significantly lower than those in the recurrence group, and the ADC value was significantly higher than that in the recurrence group, with statistically significant differences ( t=4.70, P<0.001; t=5.93, P<0.001; t=4.55, P<0.001). The AUCs of serum MMP-9, FABP5, and ADC value alone in predicting the postoperative recurrence of patients were 0.74 (95% CI: 0.66-0.81), 0.90 (95% CI: 0.84-0.94), and 0.74 (95% CI: 0.66-0.80), respectively. The AUC of the combined prediction of these three was 0.95 (95% CI: 0.90-0.98), and the combined prediction of these three was superior to the individual prediction of MMP-9, FABP5, and ADC value ( Z=5.00, P<0.001; Z=3.03, P=0.002; Z=5.33, P<0.001) . Conclusions:The levels of serum MMP-9 and FABP5 in patients with primary liver cancer treated by percutaneous radiofrequency ablation in the complete ablation group are significantly lower than those in the residual lesion group, and the ADC value is significantly higher than that in the residual lesion group. The levels of serum MMP-9 and FABP5 of patients in the non-recurrence group are also significantly lower than those in the recurrence group, and the ADC value is also significantly higher than that in the recurrence group. The combined detection of serum MMP-9, FABP5 and MRI has a relatively high clinical value in predicting the efficacy and recurrence of patients after percutaneous radiofrequency ablation for liver cancer.

Objective To investigate the effect of 3D technology combined with smartphones in problem-based learning(PBL)for neuroendoscopy.Methods 82 trainees who were enrolled from January 2021 to January 2023 were selected as the research subjects.A randomized controlled trial was conducted,and the subjects were divided into a control group and an experimental group.PBL and 3D technology combined with smartphone-assisted PBL were implemented respectively for two groups of students.The data were analyzed using t-test.Teaching satisfac-tion is evaluated by 2 test.Results The results of the in-operation examination and theoretical examination of the ex-perimental group students were found to be higher than those of the control group students(t=8.630,6.087,P＜0.001),the satisfaction scores of students and teachers showing that the satisfaction of the experimental group was higher than that of the control group(x2=4.213,6.301,7.026,P＜0.01).Conclusion In the PBL of neuroendosco-py,the use of 3D technology combined with smart phones as an auxiliary teaching system can effectively improve students'sense of participation,reduce the difficulty of skull base anatomy learning,and improve students'theo-retical and surgical assessment scores and teaching satisfaction.

Objective In the clinical teaching of neurosurgery,the traditional Problem-Based Learning(PBL)teaching model faces systematic challenges such as the disconnection between the training cycle of specialized talents and technological iteration,the limitation of practical opportunities due to hospital infections,and the inefficient allocation of teaching resources.It provides a new path for teaching reform based on the deep integration of Artificial Intelligence and PBL,but it still needs to address issues such as differences in intern participation,insufficient technical adaptability of instructors,and fragmented resource allocation.Based on these problems,a collaborative mechanism of"technology development-talent cultivation"and a multi-dimensional optimization path of"intern participation-instructor training-hospital resource input"are proposed.On this basis,through collaborative strategies such as strengthening the incentive mechanism for autonomous learning,establishing a standardized instructor training system,and building a dynamic resource allocation platform,the management of neurosurgery clinical teaching is promoted towards intelligence,personalization,and systematization.

Objective To investigate the effect of 3D technology combined with smartphones in problem-based learning(PBL)for neuroendoscopy.Methods 82 trainees who were enrolled from January 2021 to January 2023 were selected as the research subjects.A randomized controlled trial was conducted,and the subjects were divided into a control group and an experimental group.PBL and 3D technology combined with smartphone-assisted PBL were implemented respectively for two groups of students.The data were analyzed using t-test.Teaching satisfac-tion is evaluated by 2 test.Results The results of the in-operation examination and theoretical examination of the ex-perimental group students were found to be higher than those of the control group students(t=8.630,6.087,P＜0.001),the satisfaction scores of students and teachers showing that the satisfaction of the experimental group was higher than that of the control group(x2=4.213,6.301,7.026,P＜0.01).Conclusion In the PBL of neuroendosco-py,the use of 3D technology combined with smart phones as an auxiliary teaching system can effectively improve students'sense of participation,reduce the difficulty of skull base anatomy learning,and improve students'theo-retical and surgical assessment scores and teaching satisfaction.

Objective In the clinical teaching of neurosurgery,the traditional Problem-Based Learning(PBL)teaching model faces systematic challenges such as the disconnection between the training cycle of specialized talents and technological iteration,the limitation of practical opportunities due to hospital infections,and the inefficient allocation of teaching resources.It provides a new path for teaching reform based on the deep integration of Artificial Intelligence and PBL,but it still needs to address issues such as differences in intern participation,insufficient technical adaptability of instructors,and fragmented resource allocation.Based on these problems,a collaborative mechanism of"technology development-talent cultivation"and a multi-dimensional optimization path of"intern participation-instructor training-hospital resource input"are proposed.On this basis,through collaborative strategies such as strengthening the incentive mechanism for autonomous learning,establishing a standardized instructor training system,and building a dynamic resource allocation platform,the management of neurosurgery clinical teaching is promoted towards intelligence,personalization,and systematization.

Objective To explore the associations between risk factors for cardiovascular disease and breast cancer. Methods A total of 300 patients with breast cancer and 300 with benign breast diseases diagnosed by postoperative pathology were included in the Department of Breast Surgery, Huangpu Branch of the Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine from January 2023 to June 2023. The main cardiovascular risk factors in patients between the two groups were compared. Stratification was performed according to menstrual status, and the main cardiovascular risk factors in patients with different menstrual status between the two groups were compared. The logistic regression correlation analysis was used to analyze the risk factors related to cardiovascular disease for breast cancer. Results There were statistically significant differences in clinical data and laboratory indicators between the two groups (P＜0.01) . Multivariate logistic regression analysis showed that age (OR=1.03, P=0.029), triglyceride (TG; OR=1.94, P=0.025), C-reactive protein (CRP; OR=2.73, P＜0.001), D-dimer (OR=61.19, P＜0.001), and homocysteine (Hcy; OR=2.10, P＜0.001) were independently associated with breast cancer. The stratified analysis showed age, TG, CRP, D-dimer, and Hcy were independently associated with breast cancer in both premenopausal and postmenopausal patients (P＜0.05). Conclusions Among risk factors for cardiovascular disease, advanced age, increased TG, CRP, D-dimer, and Hcy might increase breast cancer risk, which are helpful of screening high-risk individuals for breast cancer.

Objective:To explore the clinical value of urine semi-quantitative colorimetry by sodium dithionite reduction method in the diagnosis and treatment of diquat poisoning.Methods:The data of 49 patients with acute diquat poisoning treated in the First Affiliated Hospital of Nanjing Medical University from December 3, 2020 to November 23, 2022 were retrospectively analyzed, the correlation between urine colorimetric results and plasma diquat concentration was observed, and the predictive value of urine colorimetric results for target organ damage and prognosis were evaluated.Results:There was a significant correlation between urine colorimetric results and plasma diquat concentration, the correlation coefficient was r=0.89, P <0.01. The cut-off value of urine colorimetry for the predicting the damage of gastrointestinal tract, liver, kidney, and central nervous system injury were 2.5, 3.5, 3.5, 5.5, respectively; in which the urine colorimetric results showed the highest sensitivity in predicting digestive tract injury [ AUC 0.93 (95% CI:0.89-1.00)]. The cut-off value of urine colorimetry for the prognosis of death was 4.5, the positive predictive value was 64.2%, and the negative predictive value was 95.2%. Conclusions:The urine semi-quantitative method can be used for rapid prediction of the plasma diquat concentration range on admission. The urine colorimetry results can also effectively predict the occurrence of organ injury and clinical outcome related to diquat poisoning, which provides evidence for the clinical diagnosis and therapy.

The standardized training system for physicians has been implemented for many years in China. Based on the current situation of neurosurgery specialist training and the sub-professional development, the study discusses the specific plan and direction of glioma sub-professional physicians training from the aspects of glioma sub-professional physicians training outline, training content, requirements of glioma sub-professional training base, training assessment methods and training management. It provided reference for the training of neurosurgical glioma professionals in China, so as to make glioma receive comprehensive and standardized treatment.