1.Differences in deltamethrin resistance and kdr gene mutation in Culex tritaeniorhynchus population in and outside the Yellow Sea wetland
Xiao-er ZHANG ; Zhi-ming WU ; Ye TIAN ; Qian CUI ; Yu-qian JI ; Huan WANG ; Shu-juan YANG ; Yi-chao ZHAO ; Yu WANG ; Hua-yu YIN ; Yu DING ; Guo-jin YAN ; Min-sen ZHAO ; Shou-gang ZHANG ; Bing-dong SONG ; Hong-na CHEN ; Jian GAO ; Wei-fang YANG ; Yu-fu ZHANG ; Hui LIU ; Hong-liang CHU
Acta Parasitologica et Medica Entomologica Sinica 2026;33(2):101-107
Objective To gain insights into the biological characteristics of different populations of Culex tritaeniorhynchus within and around the Yellow Sea wetland from the perspective of the occurrence of resistance, we investigated the levels of resistance to deltamethrin and kdr gene mutation in the wetland and its peripheral areas. Methods Specimens were collected from Cx. tritaeniorhynchus populations at two monitoring sites in the Rare Bird National Nature Reserve and Tiaozi Ni Wetland Scenic Area, and also from two populations in Yancheng City and the Liuhe District of Nanjing, and the resistance of these mosquitoes to deltamethrin was determined using the CDC biotest bottle method. For each concentration of deltamethrin assessed, a random subset of exposed specimens was selected for amplification of the kdr gene fragment, followed by Sanger sequencing to identify and analyze resistance-associated mutations. Results The LC50 levels of deltamethrin among mosquitoes from the four populations in Luhe, Yancheng, the Rare Bird National Nature Reserve and the Tiaozi Ni Wetland Scenic Area were 2.048 5, 7.798 2, 3.473 3, and 17.695 5 mg/mL, respectively, with corresponding concentrations of deltamethrin ranging from 0.005 to 5.000,0.050 to 50.000,0.050 to 25.000 and 0.050 to 50.000 mg/mL, respectively. Furthermore, the ranges of the KT50 values were 11.76-107.43, 67.05-216.30,29.77-107.43 and 28.40-329.51 min; the 1-h knockdown rates were 34.58%-99.15%, 9.52%-43.80%, 55.09%-73.01%, and 10.09%-68.07%; and the 24-h mortality rates were 12.15%-67.52%,9.52%-79.56%,13.17%-82.21%, and 11.01%-78.99%, respectively. With respect to kdr gene mutation, we assayed a total of 63,70,59, and 57 mosquitoes for the four populations, for which we detected L1014F mutation frequencies of 14.29%, 35.00%, 20.34%, and 31.58%, respectively, with a majority of these mutations being heterozygous for resistance. In addition, five adult mosquitoes were identified has having synonymous mutations at site 1011[i. e. , AAT(asparagine)mutation to AAC(asparagine)]. Conclusions Our findings revealed the clear resistance of Cx. tritaeniorhynchus to deltamethrin in the Yancheng region of the Yellow Sea wetland, and the resistance phenotype and kdr frequency of Cx. tritaeniorhynchus in the wetland environment were comparable to those of Cx. tritaeniorhynchus in the wetland environment, thereby indicating that the resistance of different populations of Cx. tritaeniorhynchus was homogeneous under the pressure of different insecticide selection within and around the wetland. However, the underlying mechanisms need to be further studied.
2.Effect of dual task training on mobility and balance in stroke patients: a meta-analysis
Yiyi YUAN ; Wuchao TIAN ; Xianbin ZHANG ; Qiang CHAO ; Yongsheng LI ; Guixin LIU ; Wanqing WU ; Pu WANG
Chinese Journal of Rehabilitation Theory and Practice 2026;32(7):807-816
ObjectiveTo systematically review the effect of dual-task training (DTT) on mobility and balance in stroke patients. MethodsCNKI, Wanfang Data, VIP, PubMed, Web of Science, Embase and Cochrane Library were searched for randomized controlled trials (RCT) on DTT in stroke rehabilitation from inception to June, 2025. The quality of the included studies was assessed using the Cochrane Risk of Bias Tool and the PEDro scale. Meta-analysis was performed using RevMan 5.4. ResultsA total of eleven RCT involving 517 stroke patients were included, and the scores of PEDro scale were four to eight. DTT was more effective on the score of Fugl-Meyer Assessment-Lower Extremity (MD = 3.70, 95%CI 1.88 to 5.53, P < 0.001) and Berg Balance Scale (BBS) (MD = 3.04, 95%CI 1.58 to 4.49, P < 0.001), fall incidence (OR = 0.32, 95%CI 0.11 to 0.87, P = 0.025), gait speed under a single-task condition (MD = 0.08, 95%CI 0.03 to 0.12, P = 0.002), gait speed under a dual-task condition (MD = 0.13, 95%CI 0.10 to 0.16, P < 0.001), Timed Up and Go Test time (MD = -2.78, 95%CI -3.85 to -1.72, P < 0.001), and score of modified Barthel Index (MD = 4.77, 95%CI 1.88 to 7.66, P = 0.001). Subgroup analysis indicated that motor-motor DTT was more effective than cognitive-motor DTT on BBS scores and single-task gait speed. ConclusionsDTT can improve mobility and balance in stroke patients, especially with motor-motor tasks.
3.Material Basis of Entada phaseoloides Against Neuropathic Pain Based on in vitro Chemical Profiling and in vivo Absorbed Constituents
Sensen LI ; Hanxue WU ; Yuanbin LI ; Limin ZHAO ; Xiaohui SU ; Hui XIONG ; Weihua MA ; Chao WANG ; Zhaochen MA ; Na LIN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(18):88-97
ObjectiveTo systematically characterize the in vitro chemical constituents of Entada phaseoloides and its absorbed prototype compounds and metabolites in a neuropathic pain (NP) model, thereby elucidating the potential pharmacological material basis underlying its analgesic activity. MethodsUltra-high-performance liquid chromatography coupled with quadrupole-Orbitrap high-resolution mass spectrometry (UHPLC-Q-Orbitrap HRMS) was used to analyze the constituents of the 80% methanol extract of E. phaseoloides. Thirty-six mice were divided into a blank group, low-, medium-, and high-dose E. phaseoloides extract groups (25, 50, and 100 mg·kg-1, respectively), an aspirin group (400 mg·kg-1), and a morphine group (10 mg·kg-1), with six mice in each group. The tail-flick threshold was measured. Twenty-four mice were randomly divided into a blank group and low-, medium-, and high-dose E. phaseoloides extract groups (25, 50, and 100 mg·kg-1, respectively), with six mice in each group, and motor coordination was evaluated. A spinal nerve ligation (SNL) model was established in mice. Twenty-four mice were randomly divided into a sham-operated (Sham) group, an SNL group, an SNL + E. phaseoloides extract group (750 mg·kg-1), and an SNL + pregabalin group (20 mg·kg-1), with 6 mice in each group. Mechanical allodynia and thermal hyperalgesia were evaluated. Behavioral assessments were combined to determine the optimal onset time of the analgesic effect, and plasma samples were collected at this time point. Absorbed components and metabolites were systematically identified based on accurate mass, MS/MS fragmentation patterns, retention time, and comparisons with literature data and reference standards. Meanwhile, network pharmacology, target similarity analysis, and molecular docking validation were integrated to evaluate the potential effects of absorbed components on disease intervention. ResultsCompared with the blank group, the high-dose E. phaseoloides extract group and morphine group showed significantly increased pain response thresholds (P<0.01), without affecting motor coordination in normal mice. Compared with the Sham group, the SNL group exhibited significantly decreased thresholds for mechanical allodynia and thermal hyperalgesia (P<0.01). Compared with the SNL group, the SNL + E. phaseoloides extract group and SNL + pregabalin group showed significantly increased thresholds for mechanical allodynia and thermal hyperalgesia (P<0.01). The analgesic effect of E. phaseoloides was most significant at 2 h after administration. A total of 70 constituents were identified in vitro, and 22 prototype compounds and 29 metabolites were detected in plasma. The targets of the absorbed components were mainly enriched in biological processes associated with pain signal perception and transmission and showed a high degree of overlap with disease genes related to neuropathic pain. In addition, multiple components exhibited strong binding energies with core pain-related targets. Based on integrated analysis of in vitro content, plasma exposure levels, and target associations, ketanthamide A-β-D-pyranoside and ketengzide were identified as the most representative pharmacologically active substances responsible for the analgesic effect. ConclusionThis study systematically elucidates the material basis of E. phaseoloides intervention in neuropathic pain from three aspects, including chemical constituent characteristics, in vivo behavioral characteristics, and potential targets, providing important theoretical foundations and experimental support for further studies on its pharmacological mechanism and analgesic drug development.
4.Construction of a COPD risk prediction model based on machine learning and the COPD-SQ questionnaire
Lin CHEN ; Luna ZHAO ; Yue ZHOU ; Panpan WANG ; Jingkun LI ; Wenwen ZHANG ; Xinxin ZHANG ; Chao WU ; Dong LIU
Acta Universitatis Medicinalis Anhui 2026;61(7):1261-1268
ObjectiveTo construct and evaluate various machine learning models for predicting the risk of chronic obstructive pulmonary disease (COPD) in individuals, thereby providing data support for early screening and intervention. MethodsA total of 823 subjects were selected for this study, comprising 142 individuals in the high-risk group for COPD and 681 individuals in the low-risk group. Data collected included demographic characteristics, smoking history, symptoms (such as cough and shortness of breath), and scores from the Chronic obstructive pulmonary disease screening questionnaire. Four machine learning algorithms—Logistic regression, random forest, support vector machine, and XGBoost—were utilized to construct risk prediction models. The performance of these models was assessed using 5-fold cross-validation, with evaluation metrics including accuracy, precision, recall, F1-score, area under the receiver operating characteristic curve (AUC), and average precision (AP). Furthermore, a feature importance analysis was performed. ResultsThe Logistic Regression model exhibited superior performance, achieving an AUC of 0.982 and an AP of 0.939. This was closely followed by the Random Forest model, which recorded an AUC of 0.975 and an AP of 0.890. Feature importance analysis revealed that smoking history, symptoms of shortness of breath, and body weight were significant predictors. All models demonstrated robust performance in identifying low-risk populations; however, variations were observed in their efficacy in identifying high-risk populations. ConclusionMachine learning models have proven effective in identifying individuals at high risk for COPD. Among these, the Logistic regression model exhibits the best overall performance, efficiently identifying high-risk populations and serving as a valuable clinical auxiliary screening tool. Various models, each with distinct performance characteristics, are suited to different clinical screening scenarios, thereby offering targeted decision-making support for the establishment of a hierarchical and intelligent COPD screening pathway.
5.Effect of Yinqi Sanhuang Jiedu Decoction on Piezo1-YAP Signaling Axis and Macrophage Polarization in Mouse Model of Liver Fibrosis
Chao LEI ; Yanbo LI ; Houyan ZHANG ; Meng QIAO ; Qingjuan WU ; Wenliang LYU ; Zhifei WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):142-152
ObjectiveTo validate the therapeutic effect of Yinqi Sanhuang Jiedu decoction (YQSH) on a mouse model of carbon tetrachloride (CCl4)-induced liver fibrosis and to investigate its correlations with the Piezo-type mechanosensitive ion channel component 1 (Piezo1)-Yes-associated protein (YAP) mechanical signaling axis and macrophage polarization. MethodsFifty-four C57BL/6J mice were randomized into a blank control group, a 4-week model group, a 6-week model group, a 8-week model group, a positive drug (silymarin, 55 mg·kg-1·d-1) group, and low-, medium-, and high-dose (8.325, 16.65, 33.3 g·kg-1·d-1, respectively) YQSH groups. Except the 6-week model group (n=12), each of the other groups had 6 mice. Mice in other groups except the blank control group received intraperitoneal injections of 10% CCl4 twice weekly for the modeling of liver fibrosis. Drug interventions began one week after the initial modeling through gavage, and the blank control and model groups received 0.2 mL of normal saline via gavage. The histopathological changes and collagen deposition in the liver were observed via hematoxylin-eosin (HE), Masson's trichrome, and Sirius red staining. Serum activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), as well as serum levels of total protein (TP), albumin (ALB), total bilirubin (TBIL), hyaluronic acid (HA), laminin (LN), procollagen type Ⅲ (PCⅢ), and collagen type Ⅳ (Ⅳ-C), were measured. The levels of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in the liver tissue were determined by enzyme-linked immunosorbent assay (ELISA). The protein and mRNA levels of Piezo1 and YAP1 in the liver tissue were determined by immunohistochemistry (IHC) and Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR), respectively. Co-localization of Piezo1 with YAP1, and YAP1 with inducible nitric oxide synthase (iNOS) was observed by the immunofluorescence (IF) assay. The proportions of M1-type (F4/80+CD80+) and M2-type (F4/80+CD206+) macrophages in the liver tissue were examined by flow cytometry. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses and gene set enrichment analysis (GSEA) were performed through transcriptomic sequencing. ResultsCompared with the blank control group, the model group exhibited gradually worsened liver fibrosis at the 4th, 6th, and 8th weeks. The 6- and 8-week model groups showcased inflammatory cell infiltration and collagen deposition in the liver (P<0.01) and upregulated protein levels of both Piezo1 and YAP1 (P<0.01). Compared with the model groups, treatment with YQSH improved the liver function (P<0.05, P<0.01), alleviated liver fibrosis (P<0.05, P<0.01), and reduced intrahepatic inflammatory cell infiltration and collagen deposition (P<0.01). Furthermore, the treatment downregulated the protein and mRNA levels of Piezo1 and YAP1 (P<0.05, P<0.01), lowered the levels of inflammatory factors TNF-α and IL-1β (P<0.05, P<0.01), and decreased the ratio of CD80 (M1-type)/CD206 (M2-type) macrophage proteins (P<0.01). The IF assay showed co-localization of YAP1 with Piezo1 and iNOS. Compared with the model groups, YQSH treatment downregulated the expression of Piezo1, YAP1, and iNOS (P<0.05, P<0.01). Transcriptomic analysis suggested that the anti-liver fibrosis effect of YQSH may be related to the Hippo signaling pathway (P<0.05). ConclusionThe anti-liver fibrosis effect of YQSH may be related to its inhibition of the Piezo1-YAP signaling axis and regulation of macrophage polarization.
6.Effect of Yinqi Sanhuang Jiedu Decoction on Piezo1-YAP Signaling Axis and Macrophage Polarization in Mouse Model of Liver Fibrosis
Chao LEI ; Yanbo LI ; Houyan ZHANG ; Meng QIAO ; Qingjuan WU ; Wenliang LYU ; Zhifei WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):142-152
ObjectiveTo validate the therapeutic effect of Yinqi Sanhuang Jiedu decoction (YQSH) on a mouse model of carbon tetrachloride (CCl4)-induced liver fibrosis and to investigate its correlations with the Piezo-type mechanosensitive ion channel component 1 (Piezo1)-Yes-associated protein (YAP) mechanical signaling axis and macrophage polarization. MethodsFifty-four C57BL/6J mice were randomized into a blank control group, a 4-week model group, a 6-week model group, a 8-week model group, a positive drug (silymarin, 55 mg·kg-1·d-1) group, and low-, medium-, and high-dose (8.325, 16.65, 33.3 g·kg-1·d-1, respectively) YQSH groups. Except the 6-week model group (n=12), each of the other groups had 6 mice. Mice in other groups except the blank control group received intraperitoneal injections of 10% CCl4 twice weekly for the modeling of liver fibrosis. Drug interventions began one week after the initial modeling through gavage, and the blank control and model groups received 0.2 mL of normal saline via gavage. The histopathological changes and collagen deposition in the liver were observed via hematoxylin-eosin (HE), Masson's trichrome, and Sirius red staining. Serum activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), as well as serum levels of total protein (TP), albumin (ALB), total bilirubin (TBIL), hyaluronic acid (HA), laminin (LN), procollagen type Ⅲ (PCⅢ), and collagen type Ⅳ (Ⅳ-C), were measured. The levels of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in the liver tissue were determined by enzyme-linked immunosorbent assay (ELISA). The protein and mRNA levels of Piezo1 and YAP1 in the liver tissue were determined by immunohistochemistry (IHC) and Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR), respectively. Co-localization of Piezo1 with YAP1, and YAP1 with inducible nitric oxide synthase (iNOS) was observed by the immunofluorescence (IF) assay. The proportions of M1-type (F4/80+CD80+) and M2-type (F4/80+CD206+) macrophages in the liver tissue were examined by flow cytometry. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses and gene set enrichment analysis (GSEA) were performed through transcriptomic sequencing. ResultsCompared with the blank control group, the model group exhibited gradually worsened liver fibrosis at the 4th, 6th, and 8th weeks. The 6- and 8-week model groups showcased inflammatory cell infiltration and collagen deposition in the liver (P<0.01) and upregulated protein levels of both Piezo1 and YAP1 (P<0.01). Compared with the model groups, treatment with YQSH improved the liver function (P<0.05, P<0.01), alleviated liver fibrosis (P<0.05, P<0.01), and reduced intrahepatic inflammatory cell infiltration and collagen deposition (P<0.01). Furthermore, the treatment downregulated the protein and mRNA levels of Piezo1 and YAP1 (P<0.05, P<0.01), lowered the levels of inflammatory factors TNF-α and IL-1β (P<0.05, P<0.01), and decreased the ratio of CD80 (M1-type)/CD206 (M2-type) macrophage proteins (P<0.01). The IF assay showed co-localization of YAP1 with Piezo1 and iNOS. Compared with the model groups, YQSH treatment downregulated the expression of Piezo1, YAP1, and iNOS (P<0.05, P<0.01). Transcriptomic analysis suggested that the anti-liver fibrosis effect of YQSH may be related to the Hippo signaling pathway (P<0.05). ConclusionThe anti-liver fibrosis effect of YQSH may be related to its inhibition of the Piezo1-YAP signaling axis and regulation of macrophage polarization.
7.Expert Consensus on Combined Screening for Common Cancers(2025 Edition)
Kexin CHEN ; Wanqing CHEN ; Yubei HUANG ; Zhangyan LYU ; Fangfang SONG ; Changfa XIA ; Yongjie XU ; Lei YANG ; Chao SHENG ; Yacong ZHANG ; Peng WANG ; Yunmeng ZHANG ; Yuting JI ; Jingjing LI ; Wenxuan LI ; Jie WU ; Qianyun JIN ; Fengju SONG
China Cancer 2025;34(8):583-610
Malignant tumors(commonly referred to as cancer)represent a major global public health challenge and contribute significantly to the worldwide disease burden.Early screening plays a critical role in improving detection rates,enabling timely intervention,and enhancing pa-tient survival rates.However,current cancer screening guidelines primarily focus on site-specific screening,which may not fully address the need for comprehensive early detection.A scientifical-ly rational,multi-cancer screening approach offers several advantages:it optimizes the use of bio-logical samples,reduces time costs for participants,enhances the efficiency and comprehensive-ness of screening,and minimizes overall expenses.Such an approach also facilitates the rational allocation of healthcare resources,ultimately helping to reduce the societal burden of cancer.To address this need,the Cancer Epidemiology Committee of the Chinese Anti-Cancer Association has developed the Expert Consensus on Combined Screening for Common Cancers in China.This consensus integrates multidisciplinary expertise and synthesizes the latest domestic and interna-tional researches on cancer screening,early detection,and treatment for prevalent malignancies.Drawing upon China's unique demographic and healthcare context,as well as practical screening experiences,the consensus provides evidence-based recommendations on target populations,screening technologies,and procedural workflows for multi-cancer screening.These guidelines align with the principles and methodologies established by the World Health Organization(WHO),aiming to:enhance the effectiveness of combined cancer screening in China,improve early detec-tion rates,and provide a scientific foundation for national cancer prevention and control strategies.
8.Exploration on the Effects of Ditan Yizhi Decoction Regulating Glucose Metabolism on Cognitive Impairment in Vascular Dementia Rats Based on ROS/Drp1 Axis
Mengyu GU ; Lieqian SUN ; Jie YANG ; Kaiyi WANG ; Fan WU ; Shujie XU ; Xing LAI ; Li ZHENG ; Xiangzhong SHEN ; Chao YANG
Chinese Journal of Information on Traditional Chinese Medicine 2025;32(8):82-90
Objective To observe the effects of Ditan Yizhi Decoction on mitochondrial dynamics-mediated glucose metabolism in vascular dementia(VaD)rats based on the ROS/Drp1 axis;To explore its mechanism in treating VaD.Methods Ten male SD rats were randomly selected from 70 as the sham-operation group,and VaD models were prepared using the modified bilateral common carotid artery permanent ligation method for the remaining rats.The successfully modeled rats were randomly divided into model group,positive drug group(donepezil hydrochloride),inhibitor group(Mdivi-1)and Ditan Yizhi Decoction low-,medium-and high-dosage groups(12.86,25.725,51.45 g/kg),and intervened with corresponding method for 4 consecutive weeks.Morris water maze experiment was used to assess the learning memory ability of rats,HE and Nissl staining were used to observe the morphology of hippocampal tissue,transmission electron microscopy was used to observe the mitochondrial ultrastructure of hippocampal neurons,DHE fluorescent probe was used to detect the content of ROS in hippocampal neurons,Western blot was used to detect the expressions of Drp1,p-Drp1,Mfn2,Opa1,HK1,PKM2,GLUT1 and LDHA,the contents of serum IL-1β,IL-6 and TNF-α were detected by ELISA.Results Compared with the sham-operation group,rats in the model group had a prolonged escape latency(P<0.01)and a reduced number of crossing platforms(P<0.01);neuronal gaps in the CA1 region of the hippocampus were enlarged,with irregular cell morphology and blurred borders,neuronal consolidation,lysis and fragmentation of Nissl bodies and reduced number of Nissl bodies,swelling and deformation of mitochondria,disorganization of the cristae,and disruption of the bilayer membrane structure;the content of ROS in CA1 region of the hippocampus was elevated,the protein expressions of Mfn2 and Opa1 significantly decreased(P<0.01),the expressions of p-Drp1,HK1,PKM2,GLUT1,LDHA proteins significantly increased(P<0.01),and serum contents of IL-1β,IL-6 and TNF-α significantly increased(P<0.01).Compared with the model group,the escape latency was significantly shortened in Ditan Yizhi Decoction groups,positive drug group and inhibitor group(P<0.01),and the number of crossing platforms increased(P<0.05,P<0.01);the number of neurons in the hippocampal CA1 region increased,with normal morphology,orderly arrangement,abundant Nissl bodies,recovered mitochondrial morphology,and decreased rupture;the ROS content in hippocampal CA1 region decreased(P<0.01),while the expressions of Mfn2 and Opa1 proteins increased(P<0.01),the expressions of p-Drp1,HK1,PKM2,GLUT1 and LDHA proteins decreased(P<0.01),and the serum contents of IL-1β,IL-6 and TNF-α decreased(P<0.05).Conclusion Ditan Yizhi Decoction can improve cognitive impairment and neuronal morphology in VaD rats,and the mechanism maybe related to regulation of mitochondrial dynamics through the ROS/Drp1 axis,attenuating glycometabolic disorders,and reducing inflammatory response.
9.Clinical application value of low-dose scan combined with deep learning reconstruction in CT on chest of overweight or obese patient
Xiujing AN ; Zhe WU ; Chao JIANG ; Ning LI ; Jubing WAN ; Sen WANG ; Dongyao LI ; Lufeng TIAN
China Medical Equipment 2025;22(3):37-42
Objective:To explore the feasibility of using low-dose computed tomography(LDCT)with deep learning reconstruction(DLR)on the chest for the screening of lung nodules,and to compare the image quality and detection rate of nodules between LDCT and routine dose CT(RDCT)-DLR.Methods:A total of 104 overweight or obese patients[body mass index(BMI)≥25 kg/m2]who received CT examination on chest due to pulmonary nodule screening from September to December 2023 were included to conduct prospective study.All patients underwent respectively RDCT(120 kV)and LDCT(100 kV)scans,all of the two scans used the modulation of automatic tube current,and adopted deep learning AI algorithm ClearInfinity to conduct reconstruction(RDCT:CI 40%,LDCT:CI 50%).Radiation dose and nodules number of them were recorded.At the T8 vertebral level,CT values(Hounsfield Units,HU)of mediastinal fat and lung parenchyma in the right lower lobe were measured,along with image noise(standard deviation,SD).The signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were subsequently calculated.Two radiologists independently performed subjective evaluations of image quality and pulmonary nodules using a Likert 4-point scale.Paired t-tests or Wilcoxon rank-sum test were employed to compare differences in radiation dose,objective image noise,and subjective scores between LDCT and RDCT.Results:A total of 104 patients were enrolled,including 54 males and 50 females,with a mean age of 52±13 years and a BMI of(27.77±2.64)kg/m2.The effective radiation dose of LDCT demonstrated a statistically significant reduction compared to RDCT(Z=-8.853,P<0.001),with a mean effective radiation dose reduction of 77.86%.The differences in lung CT value,lung noise,fat noise,lung parenchyma SNR,fat SNR and CNR of images between two groups were significant(Z=-3.022,-2.327,-4.785,-2.059,-3.765,-4.013,P<0.05),while there were not significant differences in the comparisons for fat CT value and lung parenchyma SNR(P>0.05).The image contrast,image noise,and subjective score for image quality of lung nodule of LDCT were lower than those of RDCT(t=2.877,2.387,5.096,P<0.05),but all subjective scores of that were>3,which can meet the requirements of clinical diagnosis.In terms of nodule detection,RDCT found out about 418 nodules,while LDCT found out about 421,the false positive rate of LDCT only was 0.72%.Conclusion:In overweight or obese patients,LDCT that combined with DLR algorithm on chest is equivalent to RDCT on image quality and the detection rate of lung nodule,and it significantly reduce radiation exposure on patients at the same time.
10.Expert consensus on combined screening for common cancers(2025 edition)
Chen KEXIN ; Chen WANQING ; Huang YUBEI ; Lyu ZHANGYAN ; Song FANGFANG ; Xia CHANGFA ; Xu YONGJIE ; Yang LEI ; Sheng CHAO ; Zhang YACONG ; Wang PENG ; Zhang YUNMENG ; Ji YUTING ; Li JINGJING ; Li WENXUAN ; Wu JIE ; Jin QIANYUN ; Song FENGJU
Chinese Journal of Clinical Oncology 2025;52(14):703-726
Malignant tumors(commonly referred to as cancers)represent a major global public health challenge and contribute substan-tially to the global disease burden.Early screening plays a crucial role in improving detection rates,enabling timely intervention,and enhan-cing patient survival.However,current cancer screening guidelines primarily focus on site-specific screening,which may not fully address the need for comprehensive early detection.A scientifically rational,multi-cancer screening approach offers several advantages:it optimizes the use of biological samples,reduces the time burden for participants,enhances the efficiency and comprehensiveness of screening,and min-imizes overall expenses.Moreover,this approach facilitates rational allocation of healthcare resources,ultimately helping to reduce the soci-etal burden of cancer.To address gap,the Cancer Epidemiology Committee of the China Anti-Cancer Association has developed the Expert Consensus on Combined Screening for Common Cancers.This consensus integrates multidisciplinary expertise and synthesizes the latest do-mestic and international researches on cancer screening,early detection,and treatment of prevalent malignancies.Drawing upon China's unique demographic and healthcare context and practical screening experiences,the consensus provides evidence-based recommendations on target populations,screening technologies,and procedural workflows for multi-cancer screening.These guidelines align with the prin-ciples and methodologies established by the World Health Organization(WHO),aiming to enhance the effectiveness of combined cancer screening in China,improve early detection rates,and provide a scientific foundation for national cancer prevention and control strategies.


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