1.Development and application on a full process disease diagnosis and treatment assistance system based on generative artificial intelligence.
Wanjie YANG ; Hao FU ; Xiangfei MENG ; Changsong LI ; Ce YU ; Xinting ZHAO ; Weifeng LI ; Wei ZHAO ; Qi WU ; Zheng CHEN ; Chao CUI ; Song GAO ; Zhen WAN ; Jing HAN ; Weikang ZHAO ; Dong HAN ; Zhongzhuo JIANG ; Weirong XING ; Mou YANG ; Xuan MIAO ; Haibai SUN ; Zhiheng XING ; Junquan ZHANG ; Lixia SHI ; Li ZHANG
Chinese Critical Care Medicine 2025;37(5):477-483
The rapid development of artificial intelligence (AI), especially generative AI (GenAI), has already brought, and will continue to bring, revolutionary changes to our daily production and life, as well as create new opportunities and challenges for diagnostic and therapeutic practices in the medical field. Haihe Hospital of Tianjin University collaborates with the National Supercomputer Center in Tianjin, Tianjin University, and other institutions to carry out research in areas such as smart healthcare, smart services, and smart management. We have conducted research and development of a full-process disease diagnosis and treatment assistance system based on GenAI in the field of smart healthcare. The development of this project is of great significance. The first goal is to upgrade and transform the hospital's information center, organically integrate it with existing information systems, and provide the necessary computing power storage support for intelligent services within the hospital. We have implemented the localized deployment of three models: Tianhe "Tianyuan", WiNGPT, and DeepSeek. The second is to create a digital avatar of the chief physician/chief physician's voice and image by integrating multimodal intelligent interaction technology. With generative intelligence as the core, this solution provides patients with a visual medical interaction solution. The third is to achieve deep adaptation between generative intelligence and the entire process of patient medical treatment. In this project, we have developed assistant tools such as intelligent inquiry, intelligent diagnosis and recognition, intelligent treatment plan generation, and intelligent assisted medical record generation to improve the safety, quality, and efficiency of the diagnosis and treatment process. This study introduces the content of a full-process disease diagnosis and treatment assistance system, aiming to provide references and insights for the digital transformation of the healthcare industry.
Artificial Intelligence
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Humans
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Delivery of Health Care
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Generative Artificial Intelligence
2.Exploring the mechanism of Xiaoaiping Injection inhibiting autophagy in prostate cancer based on proteomics.
Qiuping ZHANG ; Qiuju HUANG ; Zhiping CHENG ; Wei XUE ; Shoushi LIU ; Yunnuo LIAO ; Xiaolan LI ; Xin CHEN ; Yaoyao HAN ; Dan ZHU ; Zhiheng SU ; Xin YANG ; Zhuo LUO ; Hongwei GUO
Chinese Journal of Natural Medicines (English Ed.) 2025;23(1):64-76
Xiaoaiping (XAP) Injection demonstrates the anti-prostate cancer (PCa) effects, yet the underlying mechanism remains unclear. This study aims to investigate the impact of XAP on PCa and elucidate its mechanism of action. PCa cell proliferation was evaluated using a cell counting kit-8 (CCK-8) assay. Cell apoptosis was assessed through Hoechst staining and Western blotting assays. Proteomics technology was employed to identify key molecules and significant signaling pathways modulated by XAP in PCa cells. To further validate potential key genes and important pathways, a series of assays were conducted, including acridine orange (AO) staining, transmission electron microscopy, and immunofluorescence assays. The molecular mechanism of XAP against PCa in vivo was examined using a PC3 xenograft mouse model. Results demonstrated that XAP significantly inhibited cell proliferation in multiple PCa cell lines. In C4-2 and prostate cancer cell line-3 (PC3) cells, XAP induced cellular apoptosis, evidenced by reduced B-cell lymphoma 2 (Bcl-2) levels and elevated Bcl-2-associated X (Bax) levels. Proteomic, immunofluorescence, and quantitative reverse transcription-polymerase chain reaction (qRT-PCR) investigations revealed a strong correlation between forkhead box O3a (FoxO3a) autophagic degradation and the anti-PCa action of XAP. XAP hindered autophagy by reducing the expression levels of autophagy-related protein 5 (Atg5)/autophagy-related protein 12 (Atg12) and enhancing FoxO3a expression and nuclear translocation. Furthermore, XAP exhibited potent anti-PCa action in PC3 xenograft mice and triggered FoxO3a nuclear translocation in tumor tissue. These findings suggest that XAP induces PCa apoptosis via inhibition of FoxO3a autophagic degradation, potentially offering a novel perspective on XAP injection as an effective anticancer therapy for PCa.
Male
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Humans
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Prostatic Neoplasms/physiopathology*
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Autophagy/drug effects*
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Animals
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Drugs, Chinese Herbal/pharmacology*
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Proteomics
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Mice
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Apoptosis/drug effects*
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Cell Line, Tumor
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Cell Proliferation/drug effects*
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Forkhead Box Protein O3/genetics*
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Xenograft Model Antitumor Assays
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Mice, Nude
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Mice, Inbred BALB C
3.Application of 3D printing accurate osteotomy guide combined with the revision of anterior cruciate ligament with abnormally increased posterior slope of tibial plateau
Zhiheng WEI ; Tianmin GUAN ; Qing LIU ; Jue GONG ; Xianxiang XIANG
Chinese Journal of Tissue Engineering Research 2025;29(33):7130-7136
BACKGROUND:For patients with anterior cruciate ligament re-rupture after reconstruction with abnormally increased posterior slope of the tibial plateau,anterior cruciate ligament reconstruction combined with anterior closing-wedge high tibial osteotomy was performed.However,there is a lack of precise tools for osteotomy.OBJECTIVE:To investigate the effectiveness of three-dimensional(3D)printed accurate osteotomy template in anterior cruciate ligament revision for patients with excessive posterior slope.METHODS:The medical records of 30 patients who underwent anterior cruciate ligament revision combined with anterior closing-wedge high tibial osteotomy were retrospectively collected and divided into two groups according to the operation method.The trial group(n=15)was assisted by 3D printing osteotomy guide plate.The control group(n=15)was conventional surgery.The osteotomy time,fluoroscopy times,intraoperative and 24 hours postoperative blood loss,preoperative and 3 months postoperative tibiofemoral anatomical angle,medial proximal tibial anatomical angle,posterior slope,the difference between planned posterior slope correction angle and actual correction angle,and KT-2000 side-to-side difference before operation,3 and 24 months after operation were compared between the two groups.Lachman test and Pivot shift test were performed before operation,immediately after operation,and 24 months after operation.International Knee Documentation Committee score and Lysholm score were performed before operation,3 and 24 months after operation.RESULTS AND CONCLUSION:(1)The osteotomy time,fluoroscopy times,and blood loss during operation and 24 hours after operation in the trial group were significantly less than those in the control group(P<0.05).(2)The posterior slope of the two groups decreased significantly after operation.There was no significant change in tibiofemoral anatomical angle and medial proximal tibial anatomical angle after operation.The difference between preoperative planned and postoperative actual posterior slope degree in the trial group(0.64±0.41)° was smaller than that in the control group(2.18±0.54)°,and the difference was statistically significant(P<0.001).(3)The KT-2000 side-to-side difference was significantly reduced in both groups after surgery(P<0.05).At 3 and 24 months after operation,there was no significant difference in KT-2000 side-to-side difference between the two groups(P>0.05).The Lachman test and Pivot shift test of the two groups were negative immediately after operation,3 and 24 months after operation.(4)The International Knee Documentation Committee and Lysholm scores of the two groups increased significantly after surgery(P<0.05).At 3 months after operation,the International Knee Documentation Committee score and Lysholm score of the trial group were significantly higher than those of the control group(P<0.05).At 24 months after operation,there was no significant difference in International Knee Documentation Committee score and Lysholm score between the two groups(P>0.05).(5)In conclusion,with the assistance of 3D printing accurate osteotomy guide plate,anterior cruciate ligament reconstruction combined with anterior closing-wedge high tibial osteotomy is easier to operate,with shorter operation time,fewer fluoroscopy times,less intraoperative and postoperative blood loss,and faster recovery of knee joint function after operation,which has high clinical application value.
4.A study of early graft healing after anterior cruciate ligament reconstruction in over-the-top position.
Jue GONG ; Zhiheng WEI ; Mengyang JIA ; Weiming WANG ; Xianxiang XIANG
Chinese Journal of Reparative and Reconstructive Surgery 2025;39(3):307-313
OBJECTIVE:
To compare early graft healing between over-the-top (OTT) and anatomic single-bundle (SB) anterior cruciate ligament (ACL) reconstruction.
METHODS:
A clinical data of 40 patients underwent ACL reconstruction, who admitted between June 2021 and October 2022 and met the selective criteria, was retrospectively analyzed. Among them, 20 patients were treated with OTT reconstruction (OTT group) and 20 with SB reconstruction (SB group). There was no significant difference between groups ( P>0.05) in the gender, age, affected side, disease duration, degree of meniscus injury, body mass index, and preoperative International Knee Documentation Committee (IKDC) score, Lysholm score, pain visual analogue scale (VAS) score, and KT-2000 measurement. At 3, 6, and 12 months, MRI was performed to measure the signal noise quotient (SNQ) of the proximal end, middle, and distal end of the graft in the two groups, as well as at the corner of the graft with lateral femoral condyle and 1 cm around the femoral fixation point in the OTT group, to observe the degree of graft healing. Before operation and at 3, 6, and 12 months, the knee function and pain were evaluated by IKDC score, Lysholm score, and VAS score. Before operation and at 12 months after operation, the KT-2000 measurement was taken to evaluation the knee joint stability.
RESULTS:
All operations were successfully completed in both groups and the incisions healed by first intention. All patients were followed up 12-15 months (mean, 12.9 months), with no significant difference in the follow-up time between groups ( P>0.05). After operation, the IKDC score, VAS score, and Lysholm score improved gradually over time in both groups, with significant differences between different time points ( P<0.05). The differences between groups at 3, 6, and 12 months after operation were not significant ( P>0.05). The anterior and posterior stability of the knee joint improved significantly in both groups at 12 months after operation, and the difference in KT-2000 measurements was significant when compared with the preoperative value ( P<0.05), but the difference of pre- and post-operation between groups was not significant ( P>0.05). At 3, 6, and 12 months after operation, MRI showed that the differences in the SNQ of the proximal end and middle of the grafts between the two groups were not significant ( P>0.05), and the SNQ of distal end was significantly higher in the SB group than in the OTT group ( P<0.05). At each time point, grafts in the OTT group had the highest SNQ at the corner and the lowest at the fixation point, and the differences were significant compared to the other sites ( P<0.05). In the two groups, except for the fixation point, the SNQ of the remaining sites were highest at 6 months and lowest at 12 months ( P<0.05). In addition, there were significant differences in SNQ between the different sites of grafts ( P<0.05), and the SNQ was lowest at proximal end and highest at distal end. At last follow-up, the knee grafts in both groups were in good shape and no graft necrosis or loosening of the internal fixation was observed.
CONCLUSION
The knee joint function and graft healing after OTT reconstruction of ACL are similar to those of SB reconstruction, but it should be noted that the healing at the corner of the graft is slower.
Retrospective Studies
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Treatment Outcome
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Anterior Cruciate Ligament Reconstruction/rehabilitation*
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Follow-Up Studies
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Tibial Meniscus Injuries/surgery*
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Patient Positioning/methods*
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Recovery of Function
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Pain Measurement
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Knee Joint/surgery*
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Humans
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Male
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Female
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Adult
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Wound Healing
5.Status and influencing factors of elevated blood pressure among manufacturing workers in Foshan City
Zhiheng XU ; Qinghua ZHONG ; Xudong LI ; Wei XU ; Fu CHEN ; Wanxia CHEN ; Qiang TAN
China Occupational Medicine 2025;52(6):637-642
Objective To analyze the elevated blood pressure status and its influencing factors among manufacturing workers in Foshan City. Methods A total of 565 795 manufacturing workers who underwent occupational medical examinations in Foshan City from 2017 to 2023 were included. Data of workers were obtained from the Guangdong Provincial Key Occupational Disease Monitoring and Management Platform. The influencing factors of elevated blood pressure were analyzed using descriptive epidemiological methods. Results A total of 89 526 cases of elevated blood pressure were detected among the 565 795 workers, with a detection rate of 15.82%. From 2017 to 2023, the annual detection rate of elevated blood pressure was 14.11%, 15.00%, 14.69%, 15.94%, 17.00%, 16.90%, and 16.68%, respectively, showing an overall upward trend (P<0.01). The top three industries with the highest detection rates of elevated blood pressure were instrument and meter manufacturing; wood processing and the manufacture of wood, bamboo, rattan, palm, and straw products; as well as agricultural and sideline food processing. Binary logistic regression analysis showed that male workers had a higher risk of elevated blood pressure than female workers (P<0.01). The risk of elevated blood pressure in workers increased with age, years of occupational hazard exposure, and duration of dust exposure (all P<0.05). Workers exposed to noise for more than three years had a higher risk of elevated blood pressure than those without noise exposure (P<0.05). The risk of elevated blood pressure among workers in Nanhai, Shunde, and Gaoming districts was higher than that in Chancheng District (all P<0.01). Workers originating from Northeast and Northwest China had a higher risk of elevated blood pressure than those from North China (all P<0.05). Workers from smaller-scale enterprises had higher risk of elevated blood pressure (all P<0.01). Conclusion Targeted blood pressure health interventions in Foshan City should be strengthened for male manufacturing workers who are older, have longer working years, and originate from Northeast and Northwest China. The development of exemplary health enterprises should be promoted, particularly among micro- and small-sized enterprises and key industries. Enhanced occupational health management is especially needed for positions with high intensity noise exposure and high concentration dust exposure.
6.Preoperative prediction of factors associated with impacted ureteral stones and construction of a nomogram model
Xinyu SHI ; Haiyang WEI ; Changbao XU ; Wuxue LI ; Xiaofu WANG ; Tianhe ZHANG ; Zhiheng HUANG ; Xinghua ZHAO
Chinese Journal of Urology 2025;46(9):669-675
Objective:To explore the predictive factors for ureteral stone impaction preoperatively and to construct a nomogram prediction model for impacted ureteral stones.Methods:A retrospective analysis was conducted on the clinical data of 209 patients with ureteral stones treated at The Second Affiliated Hospital of Zhengzhou University from July 2023 to June 2024. There were 164 males(78.5%)and 45 females(21.5%). The age was 49(47,57)years,and the body mass index(BMI)was 25.10(23.55,27.24)kg/m2. Of the patients,85(40.7%)had comorbid hypertension and 85(40.7%)had comorbid diabetes. Stones were located on the left side in 124 patients(59.3%)and on the right side in 85 patients(40.7%). Hydronephrosis was present in 169 patients(80.9%),and urine culture was positive in 29 patients(13.9%). Patients were divided into impacted and non-impacted groups based on the presence or absence of ureteral stone impaction. Univariate and multivariate logistic regression analyses were performed to determine independent predictive factors for impacted ureteral stones. A nomogram model was constructed based on these results. The performance of the predictive model was evaluated using receiver operating characteristic(ROC)curves,calibration plots,and decision curve analysis(DCA).Results:Among the 209 patients in this study,85(40.7%)experienced ureteral stone impaction. The impacted group had a significantly higher neutrophil-to-lymphocyte ratio(NLR)than the non-impacted group(3.91 ± 2.05 vs. 3.25 ± 2.10, P = 0.024),a higher rate of hydronephrosis[81.2%(69/85)vs. 80.6%(100/124), P = 0.002],larger stone surface area[(64.96 ± 39.96)mm2 vs.(51.86 ± 39.80)mm2, P = 0.021],greater ureteral wall thickness(UWT)[(3.96 ± 1.37)mm vs.(3.06 ± 1.33)mm, P < 0.001],and a higher ratio of the upper ureter diameter(D1)to the lower ureter diameter(D2)(DDR)(2.87 ± 1.58 vs. 2.00 ± 0.99, P < 0.001). Univariate analysis showed that NLR,hydronephrosis,stone length,stone surface area,UWT,D1,D2,and DDR were statistically significant( P < 0.05). After multivariate logistic regression analysis,the following items were identified as independent predictors of impacted ureteral stones:NLR( OR = 1.205,95% CI 1.026 - 1.415, P = 0.023),hydronephrosis( OR = 1.840,95% CI 1.236 - 2.740, P = 0.003),stone length( OR = 1.587,95% CI 1.142 - 2.206, P = 0.006),ureteral wall thickness(UWT)( OR = 1.643,95% CI 1.263 - 2.136, P < 0.001),and DDR( OR = 2.907,95% CI 1.040 - 8.130, P = 0.042).Based on these independent predictive factors,a nomogram prediction model for impacted ureteral stones was constructed. The area under the ROC curve was 0.797(95% CI 0.737 - 0.858),and the calibration curve showed good consistency. The decision curve suggested that the model had good clinical net benefit. Conclusions:NLR,hydronephrosis,stone length,UWT,and DDR are all independent predictors for impacted ureteral stones. The nomogram model constructed based on these factors has good predictive performance.
7.Construction of a predictive model for extracapsular extension after radical prostatectomy in clinically localized prostate cancer based on SEER database
Zhiheng HUANG ; Changbao XU ; Han XU ; Tianhe ZHANG ; Haiyang WEI ; Junfeng GAO ; Changhui FAN
Chinese Journal of Urology 2025;46(3):180-187
Objective:To explore the independent factors influencing extraprostatic extension (EPE) after radical prostatectomy(RP) in patients with clinically localized prostate cancer by utilizing the Surveillance, Epidemiology, and End Results (SEER) database. A nomogram model was developed and externally validated.Methods:Clinical and pathological data of 20 916 clinically localized prostate cancer patients (T 1-2N 0M 0) who underwent RP between 2010 and 2021 were extracted from the SEER database. The mean age was (61.71±7.09) years old, and a total of 17 835 patients (85.3%) were married.There were 2 243 patients (10.7%) with prostate-specific antigen (PSA) <4 ng/ml, 14 831 patients (70.9%) with ≥4 and <10 ng/ml, and 2 965 patients (14.2%) with ≥10 and <20 ng/ml. There were 14 870 patients (71.1%) with clinical staging of stage T 1, and 6 046 patients (28.9%) with T 2. There were 48 patients (0.2%) with pathological staging of stage T 1, 15 794 (75.5%) with T 2, 5 001(23.9%) with T 3, and 73 (0.3%) with T 4 stage after radical surgery.The patients of SEER database were divided into training and internal validation groups in a 7∶3 ratio by using stratified sampling. Additionally, data were collected for 75 clinically localized prostate cancer patients who underwent RP at the Second Affiliated Hospital of Zhengzhou University from September 2019 to September 2024, serving as the external validation group.The mean age was(65.39±7.45) years old. Among them, 73 (97.3%) were married. There were 2 patients (2.7%) with PSA <4 ng/ml, 17 patients (22.7%) with ≥4 and <10 ng/ml, and 34 patients (45.3%) with ≥10 and <20 ng/ml. There were 47 patients (62.7%) with clinical staging of stage T 1, and 28 patients (37.3%) with T 2. There were 7 patients (9.3%) with pathological staging of stage T 1, 48 patients (64.0%)with T 2, 18 patients (24.0%) with T 3, and 2 patients (2.7%) with T 4 stage after radical surgery. All patients were categorized into organ-confined (OC) and EPE groups based on post-surgical pathology. Univariate and multivariate logistic regression analyses, with a stepwise backward selection, were performed on the training group to identify independent risk factors of EPE, which were used to construct a nomogram model. Model performance was assessed using receiver operating characteristic (ROC) curve area under the curve (AUC), calibration curves, and decision curve analysis (DCA) for the training group, internal validation group, and external validation group. Results:EPE was observed in 3 585 cases (24.5%), 1 489 cases (23.8%), and 20 cases (26.7%) in the training, internal validation, and external validation groups, respectively. Logistic regression analyses identified preoperative age ( OR=1.026, P<0.001), PSA levels (≥10 and <20 ng/ml: OR=1.790, P<0.001; ≥20 ng/ml: OR=2.683, P<0.001), tumor maximum diameter (10-20 mm: OR=2.051, P<0.001; >20 mm: OR=3.937, P<0.001), biopsy Gleason score (score 7: OR=1.911, P<0.001; score 8: OR=2.906, P<0.001; score 9: OR = 5.278, P<0.001; score 10: OR=4.421, P=0.003), number of positive biopsy cores (≥4 cores: OR=1.260, P<0.001), and their proportion of total cores ( OR=1.012, P<0.001) as independent predictors of EPE. The nomogram model demonstrated good predictive performance, with AUC of 0.741, 0.748, and 0.724 in the training, internal validation, and external validation groups, respectively. Calibration and DCA curves confirmed the model’s excellent stability and generalizability. Conclusions:Age, PSA levels, maximum tumor diameter, biopsy Gleason score, number of positive biopsy cores, and their proportion of total cores are independent predictors of EPE after RP in clinically localized prostate cancer. The constructed model effectively predicts the risk of EPE occurrence.
8.Application of 3D printing accurate osteotomy guide combined with the revision of anterior cruciate ligament with abnormally increased posterior slope of tibial plateau
Zhiheng WEI ; Tianmin GUAN ; Qing LIU ; Jue GONG ; Xianxiang XIANG
Chinese Journal of Tissue Engineering Research 2025;29(33):7130-7136
BACKGROUND:For patients with anterior cruciate ligament re-rupture after reconstruction with abnormally increased posterior slope of the tibial plateau,anterior cruciate ligament reconstruction combined with anterior closing-wedge high tibial osteotomy was performed.However,there is a lack of precise tools for osteotomy.OBJECTIVE:To investigate the effectiveness of three-dimensional(3D)printed accurate osteotomy template in anterior cruciate ligament revision for patients with excessive posterior slope.METHODS:The medical records of 30 patients who underwent anterior cruciate ligament revision combined with anterior closing-wedge high tibial osteotomy were retrospectively collected and divided into two groups according to the operation method.The trial group(n=15)was assisted by 3D printing osteotomy guide plate.The control group(n=15)was conventional surgery.The osteotomy time,fluoroscopy times,intraoperative and 24 hours postoperative blood loss,preoperative and 3 months postoperative tibiofemoral anatomical angle,medial proximal tibial anatomical angle,posterior slope,the difference between planned posterior slope correction angle and actual correction angle,and KT-2000 side-to-side difference before operation,3 and 24 months after operation were compared between the two groups.Lachman test and Pivot shift test were performed before operation,immediately after operation,and 24 months after operation.International Knee Documentation Committee score and Lysholm score were performed before operation,3 and 24 months after operation.RESULTS AND CONCLUSION:(1)The osteotomy time,fluoroscopy times,and blood loss during operation and 24 hours after operation in the trial group were significantly less than those in the control group(P<0.05).(2)The posterior slope of the two groups decreased significantly after operation.There was no significant change in tibiofemoral anatomical angle and medial proximal tibial anatomical angle after operation.The difference between preoperative planned and postoperative actual posterior slope degree in the trial group(0.64±0.41)° was smaller than that in the control group(2.18±0.54)°,and the difference was statistically significant(P<0.001).(3)The KT-2000 side-to-side difference was significantly reduced in both groups after surgery(P<0.05).At 3 and 24 months after operation,there was no significant difference in KT-2000 side-to-side difference between the two groups(P>0.05).The Lachman test and Pivot shift test of the two groups were negative immediately after operation,3 and 24 months after operation.(4)The International Knee Documentation Committee and Lysholm scores of the two groups increased significantly after surgery(P<0.05).At 3 months after operation,the International Knee Documentation Committee score and Lysholm score of the trial group were significantly higher than those of the control group(P<0.05).At 24 months after operation,there was no significant difference in International Knee Documentation Committee score and Lysholm score between the two groups(P>0.05).(5)In conclusion,with the assistance of 3D printing accurate osteotomy guide plate,anterior cruciate ligament reconstruction combined with anterior closing-wedge high tibial osteotomy is easier to operate,with shorter operation time,fewer fluoroscopy times,less intraoperative and postoperative blood loss,and faster recovery of knee joint function after operation,which has high clinical application value.
9.Construction of a predictive model for extracapsular extension after radical prostatectomy in clinically localized prostate cancer based on SEER database
Zhiheng HUANG ; Changbao XU ; Han XU ; Tianhe ZHANG ; Haiyang WEI ; Junfeng GAO ; Changhui FAN
Chinese Journal of Urology 2025;46(3):180-187
Objective:To explore the independent factors influencing extraprostatic extension (EPE) after radical prostatectomy(RP) in patients with clinically localized prostate cancer by utilizing the Surveillance, Epidemiology, and End Results (SEER) database. A nomogram model was developed and externally validated.Methods:Clinical and pathological data of 20 916 clinically localized prostate cancer patients (T 1-2N 0M 0) who underwent RP between 2010 and 2021 were extracted from the SEER database. The mean age was (61.71±7.09) years old, and a total of 17 835 patients (85.3%) were married.There were 2 243 patients (10.7%) with prostate-specific antigen (PSA) <4 ng/ml, 14 831 patients (70.9%) with ≥4 and <10 ng/ml, and 2 965 patients (14.2%) with ≥10 and <20 ng/ml. There were 14 870 patients (71.1%) with clinical staging of stage T 1, and 6 046 patients (28.9%) with T 2. There were 48 patients (0.2%) with pathological staging of stage T 1, 15 794 (75.5%) with T 2, 5 001(23.9%) with T 3, and 73 (0.3%) with T 4 stage after radical surgery.The patients of SEER database were divided into training and internal validation groups in a 7∶3 ratio by using stratified sampling. Additionally, data were collected for 75 clinically localized prostate cancer patients who underwent RP at the Second Affiliated Hospital of Zhengzhou University from September 2019 to September 2024, serving as the external validation group.The mean age was(65.39±7.45) years old. Among them, 73 (97.3%) were married. There were 2 patients (2.7%) with PSA <4 ng/ml, 17 patients (22.7%) with ≥4 and <10 ng/ml, and 34 patients (45.3%) with ≥10 and <20 ng/ml. There were 47 patients (62.7%) with clinical staging of stage T 1, and 28 patients (37.3%) with T 2. There were 7 patients (9.3%) with pathological staging of stage T 1, 48 patients (64.0%)with T 2, 18 patients (24.0%) with T 3, and 2 patients (2.7%) with T 4 stage after radical surgery. All patients were categorized into organ-confined (OC) and EPE groups based on post-surgical pathology. Univariate and multivariate logistic regression analyses, with a stepwise backward selection, were performed on the training group to identify independent risk factors of EPE, which were used to construct a nomogram model. Model performance was assessed using receiver operating characteristic (ROC) curve area under the curve (AUC), calibration curves, and decision curve analysis (DCA) for the training group, internal validation group, and external validation group. Results:EPE was observed in 3 585 cases (24.5%), 1 489 cases (23.8%), and 20 cases (26.7%) in the training, internal validation, and external validation groups, respectively. Logistic regression analyses identified preoperative age ( OR=1.026, P<0.001), PSA levels (≥10 and <20 ng/ml: OR=1.790, P<0.001; ≥20 ng/ml: OR=2.683, P<0.001), tumor maximum diameter (10-20 mm: OR=2.051, P<0.001; >20 mm: OR=3.937, P<0.001), biopsy Gleason score (score 7: OR=1.911, P<0.001; score 8: OR=2.906, P<0.001; score 9: OR = 5.278, P<0.001; score 10: OR=4.421, P=0.003), number of positive biopsy cores (≥4 cores: OR=1.260, P<0.001), and their proportion of total cores ( OR=1.012, P<0.001) as independent predictors of EPE. The nomogram model demonstrated good predictive performance, with AUC of 0.741, 0.748, and 0.724 in the training, internal validation, and external validation groups, respectively. Calibration and DCA curves confirmed the model’s excellent stability and generalizability. Conclusions:Age, PSA levels, maximum tumor diameter, biopsy Gleason score, number of positive biopsy cores, and their proportion of total cores are independent predictors of EPE after RP in clinically localized prostate cancer. The constructed model effectively predicts the risk of EPE occurrence.
10.Preoperative prediction of factors associated with impacted ureteral stones and construction of a nomogram model
Xinyu SHI ; Haiyang WEI ; Changbao XU ; Wuxue LI ; Xiaofu WANG ; Tianhe ZHANG ; Zhiheng HUANG ; Xinghua ZHAO
Chinese Journal of Urology 2025;46(9):669-675
Objective:To explore the predictive factors for ureteral stone impaction preoperatively and to construct a nomogram prediction model for impacted ureteral stones.Methods:A retrospective analysis was conducted on the clinical data of 209 patients with ureteral stones treated at The Second Affiliated Hospital of Zhengzhou University from July 2023 to June 2024. There were 164 males(78.5%)and 45 females(21.5%). The age was 49(47,57)years,and the body mass index(BMI)was 25.10(23.55,27.24)kg/m2. Of the patients,85(40.7%)had comorbid hypertension and 85(40.7%)had comorbid diabetes. Stones were located on the left side in 124 patients(59.3%)and on the right side in 85 patients(40.7%). Hydronephrosis was present in 169 patients(80.9%),and urine culture was positive in 29 patients(13.9%). Patients were divided into impacted and non-impacted groups based on the presence or absence of ureteral stone impaction. Univariate and multivariate logistic regression analyses were performed to determine independent predictive factors for impacted ureteral stones. A nomogram model was constructed based on these results. The performance of the predictive model was evaluated using receiver operating characteristic(ROC)curves,calibration plots,and decision curve analysis(DCA).Results:Among the 209 patients in this study,85(40.7%)experienced ureteral stone impaction. The impacted group had a significantly higher neutrophil-to-lymphocyte ratio(NLR)than the non-impacted group(3.91 ± 2.05 vs. 3.25 ± 2.10, P = 0.024),a higher rate of hydronephrosis[81.2%(69/85)vs. 80.6%(100/124), P = 0.002],larger stone surface area[(64.96 ± 39.96)mm2 vs.(51.86 ± 39.80)mm2, P = 0.021],greater ureteral wall thickness(UWT)[(3.96 ± 1.37)mm vs.(3.06 ± 1.33)mm, P < 0.001],and a higher ratio of the upper ureter diameter(D1)to the lower ureter diameter(D2)(DDR)(2.87 ± 1.58 vs. 2.00 ± 0.99, P < 0.001). Univariate analysis showed that NLR,hydronephrosis,stone length,stone surface area,UWT,D1,D2,and DDR were statistically significant( P < 0.05). After multivariate logistic regression analysis,the following items were identified as independent predictors of impacted ureteral stones:NLR( OR = 1.205,95% CI 1.026 - 1.415, P = 0.023),hydronephrosis( OR = 1.840,95% CI 1.236 - 2.740, P = 0.003),stone length( OR = 1.587,95% CI 1.142 - 2.206, P = 0.006),ureteral wall thickness(UWT)( OR = 1.643,95% CI 1.263 - 2.136, P < 0.001),and DDR( OR = 2.907,95% CI 1.040 - 8.130, P = 0.042).Based on these independent predictive factors,a nomogram prediction model for impacted ureteral stones was constructed. The area under the ROC curve was 0.797(95% CI 0.737 - 0.858),and the calibration curve showed good consistency. The decision curve suggested that the model had good clinical net benefit. Conclusions:NLR,hydronephrosis,stone length,UWT,and DDR are all independent predictors for impacted ureteral stones. The nomogram model constructed based on these factors has good predictive performance.

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