1.The Structure and Function of The YopJ Family Effectors in The Bacterial Type III Secretion System
Ao-Ning LI ; Wen-Bo LI ; Yu-Ying LU ; Min-Hui ZHU ; Yu-Long QIN ; Yong ZHAO ; Zhao-Huan ZHANG
Progress in Biochemistry and Biophysics 2026;53(3):516-533
The Type III Secretion System (T3SS) serves as a pivotal virulence apparatus for numerous Gram-negative bacterial pathogens, enabling them to infect both animal and plant hosts. Functioning as a molecular syringe, the T3SS directly translocates bacterial effector proteins from the bacterial cytoplasm into the interior of eukaryotic host cells. These effectors are central weapons that precisely manipulate a wide spectrum of host cellular physiological processes, ranging from cytoskeletal dynamics to immune signaling, to establish a favorable niche for bacterial survival and proliferation. Among the diverse arsenal of T3SS effectors, the YopJ family constitutes a critical group of virulence factors. Members of this family are characterized by a conserved catalytic triad structure—a hallmark of the CE clan of cysteine proteases that has been evolutionarily repurposed to confer acetyltransferase activity. A defining and intriguing feature of these enzymes is their stringent dependence on a host-derived eukaryotic cofactor, inositol hexakisphosphate (IP6), for allosteric activation. This requirement acts as a sophisticated molecular safeguard, ensuring enzymatic activity only within the appropriate host environment, thereby preventing detrimental effects on the bacterium itself. While seminal studies on individual members such as Yersinia’s YopJ and Salmonella’s AvrA have provided deep mechanistic insights, a systematic and integrative understanding of the structure-function relationships across the entire family remains fragmented. Key questions persist regarding how a conserved catalytic core has diverged to recognize distinct host substrates in different kingdoms of life. To address this gap, this article provides a systematic review of the YopJ family, focusing on three interconnected aspects: their structural features, their catalytic mechanism, and their divergent immunosuppressive strategies in animal versus plant hosts. By conducting a comparative analysis of the sequences and resolved three-dimensional structures of three representative members (e.g., HopZ1a, PopP2, AvrA), we elucidate regions of significant variation embedded within the conserved core catalytic architecture. These variable regions, often involving surface loops and substrate-binding interfaces, are crucial determinants of target specificity and functional specialization. The functional divergence of this effector family is most apparent when comparing their modes of action in different hosts. In animal hosts, YopJ-family effectors primarily sabotage innate immune signaling pathways. They achieve this by acetylating key serine and threonine residues within the activation loops of critical kinases in the MAPK and NF‑κB pathways. This post-translational modification blocks the phosphorylation and subsequent activation of these kinases, leading to potent suppression of inflammatory cytokine production. Conversely, in plant hosts, the strategy broadens to dismantle the two-tiered plant immune system. YopJ homologs target a more diverse set of substrates, including immune-associated receptor-like cytoplasmic kinases (RLCKs), microtubule networks via tubulin acetylation (which disrupts cellular trafficking and signaling), and transcription factors central to defense gene regulation. This multi-target approach effectively suppresses both Pattern-Triggered Immunity (PTI) and Effector-Triggered Immunity (ETI). In conclusion, this synthesis aims to deepen the mechanistic understanding of YopJ family-mediated pathogenesis by integrating structural biology with cellular function across host kingdoms. Elucidating the precise molecular basis for substrate selection—how conserved platforms achieve target diversity—is a major frontier. Furthermore, this knowledge provides a vital theoretical foundation for developing novel anti-virulence strategies. Targeting the conserved IP6-binding pocket or the catalytic acetyltransferase activity itself represents a promising avenue for designing broad-spectrum inhibitors that could disarm this critical family of bacterial effectors, potentially offering new therapeutic approaches against a range of pathogenic bacteria.
2.Update on the treatment navigation for functional cure of chronic hepatitis B: Expert consensus 2.0
Di WU ; Jia-Horng KAO ; Teerha PIRATVISUTH ; Xiaojing WANG ; Patrick T.F. KENNEDY ; Motoyuki OTSUKA ; Sang Hoon AHN ; Yasuhito TANAKA ; Guiqiang WANG ; Zhenghong YUAN ; Wenhui LI ; Young-Suk LIM ; Junqi NIU ; Fengmin LU ; Wenhong ZHANG ; Zhiliang GAO ; Apichat KAEWDECH ; Meifang HAN ; Weiming YAN ; Hong REN ; Peng HU ; Sainan SHU ; Paul Yien KWO ; Fu-sheng WANG ; Man-Fung YUEN ; Qin NING
Clinical and Molecular Hepatology 2025;31(Suppl):S134-S164
As new evidence emerges, treatment strategies toward the functional cure of chronic hepatitis B are evolving. In 2019, a panel of national hepatologists published a Consensus Statement on the functional cure of chronic hepatitis B. Currently, an international group of hepatologists has been assembled to evaluate research since the publication of the original consensus, and to collaboratively develop the updated statements. The 2.0 Consensus was aimed to update the original consensus with the latest available studies, and provide a comprehensive overview of the current relevant scientific literatures regarding functional cure of hepatitis B, with a particular focus on issues that are not yet fully clarified. These cover the definition of functional cure of hepatitis B, its mechanisms and barriers, the effective strategies and treatment roadmap to achieve this endpoint, in particular new surrogate biomarkers used to measure efficacy or to predict response, and the appropriate approach to pursuing a functional cure in special populations, the development of emerging antivirals and immunomodulators with potential for curing hepatitis B. The statements are primarily intended to offer international guidance for clinicians in their practice to enhance the functional cure rate of chronic hepatitis B.
3.Clinical research on the influence of different fixation techniques on the short-term postoperative clinical outcomes of cervical single-door laminoplasty with canal enlargement
Xu LI ; Mohan WEN ; Xiangjun LU ; Rujie QIN
Chinese Journal of Postgraduates of Medicine 2025;48(9):849-855
Objective:To investigate the short-term clinical efficacy of two fixation methods, mini-titanium plate fixation and suture suspension, in cervical posterior unilateral laminoplasty, and to explore the relationship between changes in the cervical sagittal sequence and therapeutic outcomes.Methods:A retrospective analysis was conducted on 55 patients who underwent cervical posterior unilateral laminoplasty with mini-titanium plate fixation and 50 patients with suture suspension at the First People's Hospital of Lianyungang from September 2020 to January 2023. All patients were followed up for 12 months, and the axial symptoms was recorded. The main clinical efficacy evaluations included before surgery and 12 months after surgery visual analog score (VAS) for neck pain, Japanese Orthopaedic Association score (JOA) and neck disability index (NDI). Four parameters were recorded before surgery and 12 months after surgery to assess the sagittal sequence: C 2-7 sagittal vertical axis (C 2-7SVA), T 1 slope angle (T 1s), C 2-7Cobb angle and cervical range of motion. Results:The mini-titanium plate fixation group had 5 cases of axial symptoms, while the traditional suture suspension group had 16 cases; the postoperative VAS, JOA and C 2-7Cobb angle in the mini-titanium plate fixation group were all less than those in the suture suspension group, with statistically significant differences ( P<0.05). Specifically, the postoperative VAS in the mini-titanium plate fixation group was (1.93 ± 1.42) points, and (2.67 ± 2.15) points in the suture suspension group ( P = 0.049); the JOA was (10.39 ± 2.20) points in the mini-titanium plate fixation group and (9.62 ± 1.52) points in the suture suspension group ( P = 0.012); the C 2-7Cobb angle was (21.087 ± 3.564)° in the mini-titanium plate fixation group and (23.092 ± 1.265)° in the suture suspension group ( P = 0.003). There was no statistical difference in operation time and blood loss between two groups ( P>0.05). The postoperative C 2-7SVA, T 1s and range of motion in the traditional suture suspension group were less than those in the mini-titanium plate fixation group, with statistically significant differences ( P<0.05). Specifically, the postoperative C 2-7SVA was (25.700 ± 3.035) mm in the mini-titanium plate fixation group and (23.946 ± 3.079) mm in the suture suspension group ( P = 0.004); the postoperative T 1s was (28.770 ± 2.361)° in the mini-titanium plate fixation group and (26.746 ± 3.198)° in the suture suspension group ( P = 0.004); the postoperative range of motion was (32.651 ± 4.995)° in the mini-titanium plate fixation group and (28.672 ± 5.874)° in the suture suspension group ( P = 0.003). Conclusions:Cervical posterior unilateral laminoplasty with mini-titanium plate fixation can effectively improve VAS, JOA, and restore neurological function, maintaining the cervical spine's sagittal balance, stability, and maximum range of motion.
4.Clinical efficacy and safety of Luofushan-Baicao oil in the treatment of Aedes albopictus bites: a paired, self-controlled study
Hongyi LI ; Panpan WU ; Wenfeng WU ; Junsheng PENG ; Qin LIU ; Yingshan LU ; Jindian DONG ; Zhibo YANG
Chinese Journal of Dermatology 2025;58(2):178-181
Objective:To evaluate the efficacy and safety of Luofuoshan-Baicao oil (LBO) and wind medicated oil for the treatment of Aedes albopictus bites. Methods:A paired self-controlled study was conducted. Thirty-six healthy volunteers were recruited from Guangdong Provincial Hospital of Traditional Chinese Medicine from February 2023 to March 2023. Each participant's forearms were subjected to Aedes albopictus bites, with 3 bites on each arm. For the first 18 participants, LBO was applied to the left arm, and wind medicated oil to the right arm; for the latter 18 participants, wind medicated oil was applied to the left arm, and LBO to the right arm. The observation period was 24 hours. Within the first 3 hours after the mosquito bites, the topical agents were applied once every other hour for a total of 3 sessions, with an applicator centered on the bite site at a dose of approximately 50 μl, covering a skin area of about 2 cm in diameter; after 3 hours, participants applied the topical agents themselves until symptoms subsided or the 24-hour observation period ended. All subjects were followed up at the occurrence of skin lesions after mosquito bites, 0 to 3 hours after the first treatment, as well as 24 hours after the first treatment. During the follow-up, the effects of both topical agents on pruritus, erythema, papules, or wheals were evaluated, differences in treatment frequency were analyzed, and treatment-related adverse events were recorded. The time to disappearance of pruritus after treatment was statistically analyzed using Kaplan-Meier survival analysis, and intergroup differences were analyzed using the log-rank (Mantel-Cox) test. Two independent samples t-test was used for comparisons of other measurement data, and Pearson's chi-square test or Fisher's exact test was used for comparisons of count data between groups. Results:Within 3 hours after the first treatment, the time to initial disappearance of pruritus was significantly shorter in the LBO group (20.71 ± 1.92 min) than in the wind medicated oil group (28.30 ± 2.20 min, P < 0.05). The cumulative pruritus rate (the proportion of participants with pruritus among all participants) over time showed an overall stable fluctuation, and the cumulative pruritus rates at all observation points were significantly lower in the LBO group than in the wind medicated oil group ( P<0.05). After 3 hours of treatment, the mean values of changes in erythema diameters were 25.83 mm in the LBO group and 26.24 mm in the wind medicated oil group, while the mean values of changes in papule or wheal diameters were 8.25 mm in the LBO group and 9.18 mm in the wind medicated oil group; within 24 hours after the first treatment, the average time to disappearance of papules or wheals was 71.85 minutes in the LBO group and 73.01 minutes in the wind medicated oil group, while the average time to disappearance of erythema was 82.27 minutes in the LBO group and 84.86 minutes in the wind medicated oil group; there were no significant differences in the above observational indices between the two groups (all P > 0.05). The number of pruritus episodes within 24 hours of treatment was 56 in both the LBO group and wind medicated oil group, and the treatment frequency was 107 in both two groups; there were also no significant differences in the frequencies of pruritus episodes or treatment (both P > 0.05). No adverse events or reactions occurred during the trial. Conclusion:LBO was more effective than wind medicated oil in reducing the time to disappearance of pruritus after Aedes albopictus bites, with a high safety profile.
5.Analysis of the acceptance and influencing factors of self-collection urine HPV testing in cervical cancer screening
Yifan LI ; Chuanyu QIN ; Xi ZENG ; Yajiao LU ; Guangdong LIAO ; Leni KANG ; Ying YANG ; Min ZHOU ; Mingrong XI ; Chunxia YANG ; Jing LI
Practical Oncology Journal 2025;39(5):412-417
Objective The aim of this study was to explore the acceptance and influencing factors of self-collected urine samples for human papillomavirus(HPV)testing in cervical cancer screening among eligible women,and to provide scientific evidence for promoting this testing in low resource areas.Methods A population-based cross-sectional study was conducted from 2022 to 2023 at the Maternal and Child Health Hospital in Shuangliu district,Chengdu City Sichuan Province.The study subjects were women aged 21 to 69 years old,and a customized questionnaire was used to conduct general information and acceptance surveys on the partic-ipants.Results A total of 2,062 women were included,with an average age of 51.58±9.34 years.Among them,1,501(72.79%)women believed that self-sampling urine was very easy.However,although 1,333(64.65%)women were still willing to accept doctor sampling as a cervical cancer screening method,only 729(35.35%)were more willing to accept self-sampling urine HPV testing.Age,educational level,annual household income,awareness of HPV,HPV vaccination status,and a sense of shame about the doctor's sampling process were all associated with the acceptance of self-collected urine HPV testing among women undergoing cervical cancer screening(P<0.001).The results of multivariate logistic regression analysis indicated that older women(OR=0.965,95%CI:0.951-0.979)and those who were not familiar with HPV(OR=0.760,95%CI:0.602-0.961)were more likely to undergo self sampling urine HPV testing,while those with junior high school education(OR=1.330,95%CI:1.053-1.682),high school education or a-bove(OR=1.990,95%CI:1.401-2.827),and a sense of shame towards the doctor's sampling process(OR=2.314,95%CI:1.706-3.142)were more likely to undergo self sampling urine for HPV testing.Conclusions Most women believe that self sampling urine for HPV testing is very easy,but compared to doctor sampling,only some women choose to self sample urine for HPV testing.Key health education interventions should be carried out for older and lower educated populations to promote acceptance of urine HPV testing.
6.Effects of shaving or segmental bowel resection on intestinal function in patients with bowel endometriosis:a 10-year follow-up study
Qi TIAN ; Yun CHEN ; Xin-xiang LI ; Wei-qi LU ; Jiang-feng YE ; Ke-qin HUA ; Xiao-fang YI
Fudan University Journal of Medical Sciences 2025;52(3):349-357
Objective To investigate the clinical characteristics of preoperative intestinal symptoms in patients with bowel endometriosis and to compare the effects of shaving versus segmental bowel resection on postoperative intestinal function.Methods A total of 105 patients diagnosed with bowel endometriosis and treated by the same surgical team at the Obstetrics and Gynecology Hospital,Fudan University between Aug 1,2013 and Dec 30,2017 were prospectively enrolled in this study.Clinical data were collected via outpatient visits and telephone follow-ups at four time points:preoperative(T0)and postoperative(T1:Nov 2018;T2:Nov 2020;T3:Apr 2024).The primary outcome was bowel symptoms and gastrointestinal function scores;secondary outcome was pain scores.A generalized estimating equation(GEE)model was used to analyze the interaction effect of surgical approach and follow-up time on outcomes.Results Ultimately,a total of 89 patients were included(15.24%loss to follow-up),among whom 79 patients(88.76%)underwent shaving excision.Preoperatively,46 patients(51.68%)presented with bowel symptoms,primarily anus bulge(21 cases,46.65%)and diarrhea(15 cases,32.61%)during menstruation.Postoperatively,there was a significant increase in constipation rates(T1:71.43%;T2:50.00%;T3:72.00%).Both surgical groups exhibited significant improvements in dysmenorrhea,gastrointestinal discomfort scores as well as gastrointestinal quality of life index(P<0.000 5).However,the segmental resection group had significantly higher scores for low anterior resection syndrome,constipation compared with the shaving excision group(P=0.02 and P=0.05).Conclusion Approximately half of the patients with bowel endometriosis exhibit typical bowel symptoms preoperatively,such as anus bulge and diarrhea.Both shaving excision and segmental resection effectively alleviate pain;however,shaving excision demonstrates an advantage regarding preservation of bowel function,whereas segmental resection may elevate risks associated with postoperative constipation or altered defecation patterns due to structural changes.The selection of surgical approach should carefully balance lesion removal and functional preservation,moreover,be sure that potential risks are thoroughly informed to patients prior to surgery.
7.Expert consensus on holistic integrative management of oropharyngeal squamous cell carcinoma
Moyi SUN ; Zongxuan HE ; Qianwei NI ; Xiaoying LI ; Lin KONG ; Qing XI ; Wei GUO ; Zhangui TANG ; Guoxin REN ; Zhijun SUN ; Jian MENG ; Jie ZHANG ; Jichen LI ; Yue HE ; Chunjie LI ; Lizheng QIN ; Kai YANG ; Bing HAN ; Yan SUN ; Haijun LU ; Xiaohong ZHAN ; Dapeng HAO ; Kai SONG ; Haoyue XU ; Lingxue BU ; Jieying LI ; Man HU ; Mingjin XU ; Yun LI ; Wei SHANG
Journal of Practical Stomatology 2025;41(3):293-304
Oropharyngeal squamous cell carcinoma(OPSCC)is a malignant tumor originating from the squamous epithelium of the oro-pharyngeal mucosa,accounting for more than 90%of oropharyngeal malignancies.In recent years,human papillomavirus(HPV)infec-tion has become one of the primary etiological factors of oropharyngeal squamous carcinoma.The incidence of HPV-associated oropharyn-geal squamous carcinoma has been rising annually,with a noticeable trend toward younger populations,posing a significant threat to hu-man health.Due to the distinct biological behavior and clinical characteristics of HPV-associated oropharyngeal squamous carcinoma com-pared to its non-HPV-related counterpart,the diagnostic and treatment strategies for oropharyngeal squamous carcinoma have undergone substantial changes.Prevention and screening for oropharyngeal squamous carcinoma are of critical importance.The diagnostic and treat-ment process involves multi-disciplinary collaboration,including oral and maxillofacial surgery,otolaryngology,head and neck surgery,oncology,radiology and pathology.Based on evidence from clinical practice,a comprehensive,integrated diagnostic and therapeutic ap-proach has been established,centered around the concept of"prevention,screening,diagnosis,treatment,and rehabilitation",covering the entire patient lifecycle and providing a valuable reference for clinical practice.
8.Clinical efficacy and safety of Luofushan-Baicao oil in the treatment of Aedes albopictus bites: a paired, self-controlled study
Hongyi LI ; Panpan WU ; Wenfeng WU ; Junsheng PENG ; Qin LIU ; Yingshan LU ; Jindian DONG ; Zhibo YANG
Chinese Journal of Dermatology 2025;58(2):178-181
Objective:To evaluate the efficacy and safety of Luofuoshan-Baicao oil (LBO) and wind medicated oil for the treatment of Aedes albopictus bites. Methods:A paired self-controlled study was conducted. Thirty-six healthy volunteers were recruited from Guangdong Provincial Hospital of Traditional Chinese Medicine from February 2023 to March 2023. Each participant's forearms were subjected to Aedes albopictus bites, with 3 bites on each arm. For the first 18 participants, LBO was applied to the left arm, and wind medicated oil to the right arm; for the latter 18 participants, wind medicated oil was applied to the left arm, and LBO to the right arm. The observation period was 24 hours. Within the first 3 hours after the mosquito bites, the topical agents were applied once every other hour for a total of 3 sessions, with an applicator centered on the bite site at a dose of approximately 50 μl, covering a skin area of about 2 cm in diameter; after 3 hours, participants applied the topical agents themselves until symptoms subsided or the 24-hour observation period ended. All subjects were followed up at the occurrence of skin lesions after mosquito bites, 0 to 3 hours after the first treatment, as well as 24 hours after the first treatment. During the follow-up, the effects of both topical agents on pruritus, erythema, papules, or wheals were evaluated, differences in treatment frequency were analyzed, and treatment-related adverse events were recorded. The time to disappearance of pruritus after treatment was statistically analyzed using Kaplan-Meier survival analysis, and intergroup differences were analyzed using the log-rank (Mantel-Cox) test. Two independent samples t-test was used for comparisons of other measurement data, and Pearson's chi-square test or Fisher's exact test was used for comparisons of count data between groups. Results:Within 3 hours after the first treatment, the time to initial disappearance of pruritus was significantly shorter in the LBO group (20.71 ± 1.92 min) than in the wind medicated oil group (28.30 ± 2.20 min, P < 0.05). The cumulative pruritus rate (the proportion of participants with pruritus among all participants) over time showed an overall stable fluctuation, and the cumulative pruritus rates at all observation points were significantly lower in the LBO group than in the wind medicated oil group ( P<0.05). After 3 hours of treatment, the mean values of changes in erythema diameters were 25.83 mm in the LBO group and 26.24 mm in the wind medicated oil group, while the mean values of changes in papule or wheal diameters were 8.25 mm in the LBO group and 9.18 mm in the wind medicated oil group; within 24 hours after the first treatment, the average time to disappearance of papules or wheals was 71.85 minutes in the LBO group and 73.01 minutes in the wind medicated oil group, while the average time to disappearance of erythema was 82.27 minutes in the LBO group and 84.86 minutes in the wind medicated oil group; there were no significant differences in the above observational indices between the two groups (all P > 0.05). The number of pruritus episodes within 24 hours of treatment was 56 in both the LBO group and wind medicated oil group, and the treatment frequency was 107 in both two groups; there were also no significant differences in the frequencies of pruritus episodes or treatment (both P > 0.05). No adverse events or reactions occurred during the trial. Conclusion:LBO was more effective than wind medicated oil in reducing the time to disappearance of pruritus after Aedes albopictus bites, with a high safety profile.
9.Expert consensus on holistic integrative management of oral squamous cell carcinoma
Moyi SUN ; Zongxuan HE ; Haoyue XU ; Xiaoying LI ; Jie ZHANG ; Haijun LU ; Xiaohong ZHAN ; Dapeng HAO ; Shizhu BAI ; Wei GUO ; Zhangui TANG ; Guoxin REN ; Jian MENG ; Zhijun SUN ; Jichen LI ; Yue HE ; Chunjie LI ; Lizheng QIN ; Kai YANG ; Qing XI ; Lin KONG ; Bing HAN ; Lingxue BU ; Yuanyong FENG ; Kai SONG ; Hongyu HAN ; Jieying LI ; Qianwei NI ; Yun LI ; Juan CHAI ; Xiaochen YANG ; Man HU ; Mingjin XU ; Wei SHANG
Journal of Practical Stomatology 2025;41(4):437-449
Oral squamous cell carcinoma(OSCC)is a malignant lesion originating from the oral mucosal squamous epithelium,account-ing for over 80%of oral and maxillofacial malignancies.Key etiological factors include tobacco,alcohol abuse,and betel quid chewing.In China,its incidence has shown an overall upward trend,posing a significant threat to public health.OSCC exhibits high local invasive-ness,making early diagnosis critical for improving prognosis.Its clinical management requires close multidisciplinary collaboration among oral and maxillofacial surgery,head and neck surgery,radiation oncology,medical oncology,reconstructive surgery,radiology,patholo-gy,and nutritional support teams.Given the increasing disease burden of OSCC and rapid development of multidisciplinary collaborative models,an expert panel has formulated this integrated management consensus based on evidence-based medicine and extensive deliber-ation.Centered on the'Prevention-Screening-Diagnosis-Treatment-Rehabilitation'framework,the consensus provides comprehensive guidance for the entire disease course of OSCC patients,aiming to standardize clinical practice.
10.Multicenter study on the prediction of microvascular invasion in hepatocellular carcinoma using multiphase ultrasound imaging radiomics models
Yanhong HAO ; Juan CHEN ; Qin LU ; Ruining WANG ; Yuan SU ; Shanshan SHI ; Rui SHI ; Lingjie WANG ; Jianhong WANG ; Li YANG ; Liping LIU
Chinese Journal of Ultrasonography 2025;34(11):983-991
Objective:To construct and evaluate the predictive performance of a multiphase ultrasound radiomics model for microvascular invasion(MVI)in hepatocellular carcinoma(HCC).Methods:A total of 126 patients with pathologically confirmed HCC were retrospectively enrolled from 4 medical centers between May 2018 and July 2025,including the First Hospital of Shanxi Medical University,Shanxi Province Third People's Hospital,Changzhi People's Hospital,and the Organ Transplant Center of the Affiliated Hospital of Qingdao University. A total of 630 ultrasound images of the lesions in different phases were collected,from which 1 561 radiomic features were extracted. The patients from medical institutions in Shanxi Province were chosen as the training set( n=91),and the patients from the Organ Transplant Center of the Affiliated Hospital of Qingdao University were chosen as the validation set( n=35). In the training set,37.4%(34/91)patients presented MVI(+),whereas in the validation set,54.3%(19/35)patients presented MVI(+). Radiomics features were extracted from ultrasound images,and features related to the MVI(+)were selected through dimensionality reduction analysis. Five multiple machine learning algorithms were used to construct predictive models,which were then evaluated using an external validation set. The Radscore was calculated,and a nomogram was constructed combining Radscore with ultrasound and clinical characteristics to predict MVI. Results:The model combining radiomics features from the portal venous phase and the delay phase showed the best predictive performance in both the training and validation sets,with area under curve(AUC)values of 0.835 and 0.727,respectively. The prediction model developed using radiomics Radscore and clinical indicators could be represented and presented as a nomogram.Conclusions:The radiomics model based on multi-phase ultrasound offers a novel approach for non-invasive preoperative prediction of MVI in liver cancer. Furthermore,its integration with clinical features aids in optimizing clinical treatment strategies.

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