1.Allogeneic lung transplantation in miniature pigs and postoperative monitoring
Yaobo ZHAO ; Ullah SALMAN ; Kaiyan BAO ; Hua KUI ; Taiyun WEI ; Hongfang ZHAO ; Xiaoting TAO ; Xinzhong NING ; Yong LIU ; Guimei ZHANG ; He XIAO ; Jiaoxiang WANG ; Chang YANG ; Feiyan ZHU ; Kaixiang XU ; Kun QIAO ; Hongjiang WEI
Organ Transplantation 2026;17(1):95-105
Objective To explore the feasibility and reference value of allogeneic lung transplantation and postoperative monitoring in miniature pigs for lung transplantation research. Methods Two miniature pigs (R1 and R2) underwent left lung allogeneic transplantation. Complement-dependent cytotoxicity tests and blood cross-matching were performed before surgery. The main operative times and partial pressure of arterial oxygen (PaO2) after opening the pulmonary artery were recorded during surgery. Postoperatively, routine blood tests, biochemical blood indicators and inflammatory factors were detected, and pathological examinations of multiple organs were conducted. Results The complement-dependent cytotoxicity test showed that the survival rate of lymphocytes between donors and recipients was 42.5%-47.3%, and no agglutination reaction occurred in the cross-matching. The first warm ischemia times of D1 and D2 were 17 min and 10 min, respectively, and the cold ischemia times were 246 min and 216 min, respectively. Ultimately, R1 and R2 survived for 1.5 h and 104 h, respectively. Postoperatively, in R1, albumin (ALB) and globulin (GLB) decreased, and alanine aminotransferase increased; in R2, ALB, GLB and aspartate aminotransferase all increased. Urea nitrogen and serum creatinine increased in both recipients. Pathological results showed that in R1, the transplanted lung had partial consolidation with inflammatory cell infiltration, and multiple organs were congested and damaged. In R2, the transplanted lung had severe necrosis with fibrosis, and multiple organs had mild to moderate damage. The expression levels of interleukin-1β and interleukin-6 increased in the transplanted lungs. Conclusions The allogeneic lung transplantation model in miniature pigs may systematically evaluate immunological compatibility, intraoperative function and postoperative organ damage. The data obtained may provide technical references for subsequent lung transplantation research.
2.Surveillance of Oncomelania hupensis snails following interruption of schistosomiasis transmission in Yunnan Province
Siqi NING ; Yi DONG ; Chunhong DU ; Lifang WANG ; Yun ZHANG ; Yuhe HE ; Hua JIANG ; Jiayu SUN ; Chunqiong CHEN ; Jiaqi YAN ; Jihua ZHOU ; Zongya ZHANG ; Hongqiong WANG ; Meifen SHEN ; Jing SONG
Chinese Journal of Schistosomiasis Control 2026;38(2):200-206
Objective To investigate the distribution characteristics of Oncomelania hupensis snails in Yunnan Province fol-lowing interruption of schistosomiasis transmission, so as to provide the evidence for assessing the risk of schistosomiasis transmission and scientifically formulating the schistosomiasis surveillance program. Methods According to the requirements of the National Schistosomiasis Surveillance Scheme (2020 Edition), O. hupensis snail surveillance data were collected from 18 schistosomiasis-endemic counties (cities, districts) in Yunnan Province from 2020 to 2024, including area of snail survey, area of snail habitats, area of re-emerging snail habitats, number of frames surveyed, number of frames with O. hupensis snails, number of O. hupensis snails captured, and number of living snails, and the occurrence of frames with snails and mean density of living snails were calculated. Changes in snail status over the 5-year period from 2020 to 2024 and the differences in snail distributions specified by epidemic intensity, environmental type, and vegetation type were analyzed. Results The areas of snail survey increased from 1 727.96 hm2 in 2020 to 3 894.45 hm2 in 2024 (peak) across 18 schistosomiasis-endemic counties (cities, districts) in Yunnan Province during the period from 2020 through 2024. The areas of snail habitats increased from 70.36 hm2 in 2020 to a peak in 2023 (172.04 hm2), followed by a reduction to 132.36 hm2 in 2024, and the areas of re-emerging snail habitats increased from 42.71 hm2 in 2020 to a peak in 2022 (78.43 hm2), followed by a reduction to 40.21 hm2 in 2024. The occurrence of frames with snails and mean density of living snails increased from 1.24% (3 025/244 404) and (0.033 2 ± 0.038 7) snails/0.1 m2 in 2020 to peaks at 2.03% (6 231/307 563) and (0.066 9 ± 0.068 4) snails/0.1 m2 in 2023, followed by reductions to 1.04% (5 829/559 941) and (0.032 6 ± 0.057 7) snails/0.1 m2 in 2024, respectively. There was a significant difference in the occurrence of frames with snails over the 5-year study period (χ2 = 1 962.95, P < 0.05), and the occurrence of frames with snails reduced by 48.71% in 2024 relative to in 2023 (χ2 = 1 411.05, P < 0.005); however, there was no significant difference in the mean density of living snails over the 5 years (H = 5.310, P > 0.05). There were significant differences in the occurrence of frames with snails (χ2 = 481.27, P < 0.05) and mean density of living snails (H = 6.872, P < 0.05) in schistosomiasis-endemic areas with different epidemic intensities. The occurrence of frames with snails (χ2 = 25.32 and 38.70, both P values < 0.017) and mean density of living snails (Z = 28.55 and 49.96, both P values < 0.017) were higher in schistosomiasis transmission-interrupted and eliminated areas with snails than in schistosomiasis-eliminated areas without snails, and the occurrence of frames with snails (χ2 = 453.54, P < 0.017) and mean density of living snails (Z = −56.97, P < 0.017) were higher in schistosomiasis-eliminated areas with snails than in schistosomiasis transmission-interrupted areas with snails. O. hupensis snails were mainly distributed in paddy fields, dry farmlands and ditches; however, the occurrence of frames with snails (13.40%, 424/3 164) and mean density of living snails [(0.252 8 ± 0.158 7) snails/0.1 m2] were higher in ponds/weirs than in other types of environments (both P values < 0.05). Rice, dry farmland crops and weeds were main vegetations in which O. hupensis snails were distributed, and the occurrence of frames with snails (2.29%, 7 111/310 140) and mean density of living snails [(0.072 3 ± 0.018 9) snails/0.1 m2] were higher in weeds than in other types of environments (both P values < 0.05). Conclusions O. hupensis snails have been effectively controlled in Yunnan Province following implementation of integrated schistosomiasis control measures; however, there are still risk factors for schistosomiasis transmission, including reduced attention to schistosomiasis control and snail re-emergence. Improved control efforts and surveillance system construction and timely identification of risk factors of snail status and timely management are recommended to ensure the achievement of the target of schistosomiasis elimination as scheduled.
3.Screening key genes of PANoptosis in hepatic ischemia-reperfusion injury based on bioinformatics
Lirong ZHU ; Qian GUO ; Jie YANG ; Qiuwen ZHANG ; Guining HE ; Yanqing YU ; Ning WEN ; Jianhui DONG ; Haibin LI ; Xuyong SUN
Organ Transplantation 2025;16(1):106-113
Objective To explore the relationship between PANoptosis and hepatic ischemia-reperfusion injury (HIRI), and to screen the key genes of PANoptosis in HIRI. Methods PANoptosis-related differentially expressed genes (PDG) were obtained through the Gene Expression Omnibus database and GeneCards database. Gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and Gene Set Enrichment Analysis (GSEA) were used to explore the biological pathways related to PDG. A protein-protein interaction network was constructed. Key genes were selected, and their diagnostic value was assessed and validated in the HIRI mice. Immune cell infiltration analysis was performed based on the cell-type identification by estimating relative subsets of RNA transcripts. Results A total of 16 PDG were identified. GO analysis showed that PDG were closely related to cellular metabolism. KEGG analysis indicated that PDG were mainly enriched in cellular death pathways such as apoptosis and immune-related signaling pathways such as the tumor necrosis factor signaling pathway. GSEA results showed that key genes were mainly enriched in immune-related signaling pathways such as the mitogen-activated protein kinase (MAPK) signaling pathway. Two key genes, DFFB and TNFSF10, were identified with high accuracy in diagnosing HIRI, with areas under the curve of 0.964 and 1.000, respectively. Immune infiltration analysis showed that the control group had more infiltration of resting natural killer cells, M2 macrophages, etc., while the HIRI group had more infiltration of M0 macrophages, neutrophils, and naive B cells. Real-time quantitative polymerase chain reaction results showed that compared with the Sham group, the relative expression of DFFB messenger RNA in liver tissue of HIRI group mice increased, and the relative expression of TNFSF10 messenger RNA decreased. Cibersort analysis showed that the infiltration abundance of naive B cells was positively correlated with DFFB expression (r=0.70, P=0.035), and the infiltration abundance of M2 macrophages was positively correlated with TNFSF10 expression (r=0.68, P=0.045). Conclusions PANoptosis-related genes DFFB and TNFSF10 may be potential biomarkers and therapeutic targets for HIRI.
4.Analysis of tear film stability and corneal nerve changes in patients with Parkinson's disease
Yujie* LI ; Cancan* SHI ; Haoyu ZHAI ; Xiaofan YU ; Xinke LI ; Ning MU ; Mingxin LI ; He WANG
International Eye Science 2025;25(2):206-212
AIM: To assess the stability of the tear film and the characteristics of corneal nerves in patients with Parkinson's disease(PD).METHODS: This cross-sectional observational study included 72 PD patients and 50 healthy controls. Disease severity was determined using the Hoehn-Yahr(H-Y)scale, dividing patients into mild and moderate PD groups. Dry eye symptoms were evaluated via the ocular surface disease index(OSDI)questionnaire, while tear secretion was quantified using the Schirmer I test. Ocular surface damage was assessed through staining scores, and comprehensive ocular examinations were performed utilizing the LipiView ocular surface interferometer and an ocular surface analyzer. Corneal nerve parameters were examined using corneal confocal microscopy in conjunction with automated analysis software ACCMetrics, with correlations drawn between these parameters, PD course, and severity.RESULTS: PD patients exhibited significantly elevated OSDI scores, indicative of more pronounced dry eye symptoms compared to the control group(F=70.290, P<0.01). Tear film stability was markedly compromised, with significantly shorter tear film breakup time and increased corneal fluorescein staining, both showing statistically significant differences relative to controls(all P<0.01). Tear secretion indices, including Schirmer I test results and tear meniscus height, were significantly reduced in PD patients(all P<0.01), whereas lipid secretion indices, such as lipid layer thickness and meibomian gland dropout score, did not show significant variation. Corneal nerve analysis revealed significant reductions in corneal nerve fiber density, nerve branch density, fiber length, and total branch density in PD patients compared to controls(all P<0.01). Furthermore, blink frequency was markedly prolonged(F=62.353, P<0.01). Correlation analysis demonstrated a significant relationship between alterations in tear film stability and both disease duration and H-Y scores.CONCLUSION: PD patients have obvious dry eye manifestations in the early stage of the disease, including the reduction of tear film stability and corneal nerve fiber density, and gradually aggravate with the progress of the disease. Neurodegenerative disease-related dry eye needs to be diagnosed early and actively treated.
5.Interpretation of neoadjuvant and adjuvant treatments for early stage resectable non-small cell lung cancer: Consensus recommendations from the International Association for the Study of Lung Cancer
Zhuokun HE ; Ning LI ; Qing GENG
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(03):291-299
With the publication of several phase Ⅱ and Ⅲ clinical studies, the multidisciplinary diagnostic and therapeutic strategies for early resectable non-small cell lung cancer (rNSCLC) are rapidly evolving. These studies have elucidated the significant effects of neoadjuvant and adjuvant therapies on improving the prognosis of rNSCLC patients, while also highlighting the urgent need to revise and refine corresponding treatment protocols and clinical pathways. In response, the International Association for the Study of Lung Cancer has assembled a diverse, multidisciplinary international expert panel to evaluate current clinical trials related to rNSCLC and to provide diagnostic, staging, and treatment recommendations for rNSCLC patients in accordance with the 8th edition of the AJCC-UICC staging system. The consensus recommendations titled "Neoadjuvant and adjuvant treatments for early stage resectable non-small cell lung cancer: Consensus recommendations from the International Associationfor the Study of Lung Cancer" outline 20 recommendations, 19 of which received over 85% agreement from the experts. The recommendations indicate that early rNSCLC patients should undergo evaluation by a multidisciplinary team and complete necessary imaging studies. For stage Ⅱ patients, consideration should be given to either adjuvant therapy following surgery or direct neoadjuvant/perioperative treatment, while stage Ⅲ patients are recommended to receive neoadjuvant chemoimmunotherapy followed by surgery. Postoperatively, adjuvant immunotherapy should be considered based on the expression levels of programmed cell death ligand 1, along with testing for other oncogenic driver mutations. For patients with epidermal growth factor receptor or anaplastic lymphoma kinase mutations sensitive to tyrosine kinase inhibitors, corresponding adjuvant targeted therapy is recommended. These recommendations aim to provide personalized and precise treatment strategies for early rNSCLC patients to enhance the efficacy of neoadjuvant and adjuvant therapies. This article provides an in-depth interpretation of these consensus recommendations.
6.The effect of modified Chevron osteotomy on asymptomatic flatfoot
The Journal of Practical Medicine 2025;41(8):1149-1154
Objective Investigation into the impact of modified Chevron osteotomy on asymptomatic flatfoot following hallux valgus correction.Methods A retrospective analysis was performed on 118 patients(120 feet)who underwent modified Chevron osteotomy for hallux valgus between January 2018 and December 2022.Based on the Meary angle,the patients were categorized into two groups:an asymptomatic flatfoot group(49 cases,50 feet)and a non-flatfoot group(69 cases,70 feet).Preoperative general data and radiographic parameters were compared between the two groups at baseline and during the last follow-up.These parameters included the talona-vicular coverage angle(TNCA),talus-second metatarsal angle(T2MT)on weight-bearing anteroposterior foot radiographs,and the Meary angle on lateral radiographs.Results There were no significant differences in preop-erative general data between the two groups(P>0.05).In the asymptomatic flatfoot group,the Meary angle dem-onstrated a improvement(P<0.001)when comparing radiographic parameters intra-group between preoperation and the last follow-up.In the non-flatfoot group,TNCA and T2MT increased(P<0.05).Inter-group comparisons revealed that preoperatively,TNCA,T2MT,and the Meary angle were significantly worse in the asymptomatic flatfoot group compared to the non-flatfoot group(P<0.05).At the last follow-up,there were no significant differ-ences in TNCA and T2MT between the two groups(P>0.05);however,the Meary angle remained significantly lower in the asymptomatic flatfoot group than in the non-flatfoot group(P<0.05).Conclusions The modified Chevron osteotomy significantly enhances the medial longitudinal arch in patients with hallux valgus and asymptom-atic flatfoot,although its effect on correcting abduction is relatively limited.In patients with hallux valgus but without flatfoot,this procedure does not substantially alter the medial longitudinal arch;however,it can induce abduction,which aids in the correction of hallux valgus.This study confirms that the modified Chevron osteotomy effectively improves foot arch structure in asymptomatic flatfoot cases while addressing hallux valgus,without worsening the flatfoot condition.
7.Analysis of clinical characteristics and factors affecting activities of daily living in patients with neurosyphi-lis
Caidie XIE ; Shoucheng XU ; Ning ZHANG ; Wei WANG ; Shanshan HE ; Yabin ZHENG
Chinese Journal of Nervous and Mental Diseases 2025;51(3):135-141
Objective To analyze the clinical data of patients with neurosyphilis(NS)and explore factors influencing their activity of daily living(ADL).Methods The clinical data of 90 patients with NS was retrospectively analyzed,and the ADL scores at admission were assessed by using the Barthel index(BI).The patients were divided into no-dependency,mild-dependency,and moderate-to-severe-dependency groups.The influencing factors of ADL were explored through comparative analysis and multiple linear regression analysis.The receiver operating characteristic(ROC)curve was used to evaluate the predictive value of clinical indicators for poor ADL recovery(BI score≤60)at discharge in patients.Results Among the 90 NS patients,the average age was 54.17±12.45 years,with 70 males(77.78%).The most common clinical manifestation was abnormal mental behavior(44.44%),followed by limb sensory or motor disorders(25.56%)and dysarthria(16.67%).Based on the BI scores,41 patients(45.6%)were independent,31 patients(34.4%)had mild dependence,and 18 patients(20.0%)had moderate to severe dependence.The comparison results of the three groups showed that the neutrophil-to-lymphocyte ratio(NLR)was gradually increased[2.80(1.97,4.73)vs.3.80(2.28,4.89)vs.5.37(3.76,7.20)]which was higher in the moderate-to-severe-dependency group than in the independent and the mildly-dependent group(P<0.05);cerebrospinal fluid protein concentration[427(341,644)mg/L vs.553(425,830)mg/L vs.933(641,1706.5)mg/L]was gradually increased and there were significant differences in pairwise comparisons(P<0.05).Multiple linear regression analysis showed that NLR(β=-0.242,P=0.018)and cerebrospinal fluid protein concentration(β=-0.461,P<0.001)were negatively correlated with ADL at admission.The area under curve(AUC)for cerebrospinal fluid protein concentration in predicting poor ADL recovery at discharge was 0.806(95%CI:0.708-0.883,P<0.001),with an optimal cutoff value of 620 mg/L,sensitivity of 86.7%,and specificity of 69.4%.Conclusion The main clinical manifestations of NS patients are psychiatric/behavioral abnormalities.Elevated NLR and cerebrospinal fluid protein concentration may be associated with the decreased ADL.Early active intervention of inflammatory response and cerebrospinal fluid protein abnormalities may provide a new way to improve the prognosis of patients.
8.Design and application of home pulmonary rehabilitation checklist for postoperative lung cancer patients
Qian DING ; Shuang QUAN ; Shuang HE ; Yanyan NING ; Fengjuan YANG ; Hui YANG
Chinese Journal of Practical Nursing 2025;41(28):2192-2198
Objective:To explore the design and application effect of a home-based pulmonary rehabilitation checklist for postoperative lung cancer patients and to analyze the feasibility of this innovative rehabilitation approach.Methods:A prospective non-concurrent controlled study was conducted. Eighty postoperative lung cancer patients from the Department of Thoracic Surgery, Henan Provincial People's Hospital, were conveniently selected. According to the time of admission, postoperative lung cancer patients from April to June 2024 ( n=40) were assigned to the control group, while those postoperative lung cancer patients from August to October 2024 ( n=40) were assigned to the experimental group. The control group was given routine home-based pulmonary rehabilitation knowledge education upon discharge, while the experimental group was provided with the application of a home-based pulmonary rehabilitation checklist in addition to the routine home-based pulmonary rehabilitation knowledge education. Assessments were performed on the day of discharge and 1-month post-discharge using the Chinese version-Strategies Used by People to Promote Health (C-SUPPH), the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-C30 (EORTC-QLQ-C30), the six-minute walk test (6MWT) and the Brog score. Results:A total of 40 patients in each group completed this study. Among them, there were 26 males and 14 females in the control group, aged (51.25 ± 11.39) years, and 23 males and 17 females in the experimental group, aged (53.07 ± 12.21) years. One month after discharge, the scores of positive attitude, self-decision making and self-stress reduction on the C-SUPPH in the experimental group were (44.25 ± 10.29), (30.76 ± 8.31) and (9.51 ± 2.17) points, respectively. They were higher than those in the control group (37.02 ± 7.14), (26.61 ± 6.71) and (7.58 ± 1.09) points, and the differences were statistically significant ( t=-3.65, -2.46, -5.03, all P<0.05). The scores of somatic function, role function, cognitive function and emotional function on the EORTC-QLQ-C30 in the experimental group were (65.77 ± 6.41), (71.46 ± 7.21), (70.11 ± 5.61) and (69.59 ± 5.71) points, respectively. They were higher than those in the control group (57.71 ± 7.01), (64.27 ± 5.25), (62.79 ± 7.18), (61.11 ± 6.25) points, and the differences were statistically significant ( t values were -6.34 to -5.08, all P<0.05). The 6MWT distance in the experimental group was (411.31 ± 35.02) m, which was higher than (376.58 ± 30.26) m in the control group, and the difference was statistically significant ( t=-4.75, P<0.05). The Brog score in the experimental group was (2.12 ± 0.68) points, which was lower than (2.50 ± 0.65) points in the control group, and the difference was statistically significant ( t=2.56, P<0.05). Conclusions:The implementation of home pulmonary rehabilitation list can improve the self-management ability of patients after lung cancer surgery, improve the quality of life, and then enhance the exercise ability, which is worthy of clinical promotion.
9.Sj?gren disease complicated by primary breast lymphoma:A case report
Yuan NING ; Xiaoying ZHANG ; Xue LI ; Yuan LI ; Jing HE ; Yuebo JIN
Journal of Peking University(Health Sciences) 2025;57(4):808-811
This case report describes the diagnostic and therapeutic management of a 67-year-old fe-male with a 40-year history of Sj?gren disease(SjD)who was hospitalized for evaluation of recurrent fever lasting over one month.The patient's initial diagnosis of SjD was established four decades earlier based on clinical manifestations,serological findings,and evidence of glandular damage.Her clinical presenta-tion included recurrent parotid gland enlargement accompanied by sicca symptoms,notably persistent xerostomia and xerophthalmia,followed by progressive dental caries.Serological studies demonstrated positivity for antinuclear antibodies,anti-SSA/Ro,and anti-α-fodrin antibodies.Objective assessments confirmed significant ocular involvement(Schirmer's test≤5 mm/5 min)and pulmonary interstitial changes on chest CT,consistent with the 2016 American College of Rheumatology and European League Against Rheumatism(ACR/EULAR)classification criteria for SjD.The patient's condition remained sta-ble under low-dose corticosteroids and disease-modifying anti-rheumatic drugs(DMARDs)until the re-cent onset of prolonged fever,necessitating evaluation for fever of unknown origin.Differential diagnoses considered disease flare,infection,and malignancy.The European Sj?gren's Syndrome Disease Activity Index(ESSDAI)score was 5 points,indicating moderate systemic disease activity.Initial laboratory in-vestigations revealed no evidence of infection,and empirical anti-infective therapy proved ineffective.No-tably,despite the absence of lymphadenopathy,laboratory findings including borderline positive IgM λ M-protein,elevated lactate dehydrogenase,hyperferritinemia,and increased β2-microglobulin levels raised suspicion for lymphoproliferative disorders,given the established association between SjD and lymphoma.Bone marrow aspiration showed no significant abnormalities,but PET/CT imaging detected hypermetabolic lesions in the left breast and right distal femur,suggesting potential malignancy.Subse-quent histopathological examination of the breast lesion confirmed non-Hodgkin's lymphoma(NHL),specifically diffuse large B-cell lymphoma(DLBCL)of the germinal center B-cell(GCB)subtype.Treatment with R-CHOP chemotherapy(rituximab,cyclophosphamide,doxorubicin,vincristine,and prednisone)induced complete metabolic remission after three cycles.However,she subsequently developed treatment-related complications,including myelosuppression and pulmonary infection.This case underscores the importance of maintaining a high index of suspicion for atypical site involvement in SjD patients,particularly when lymphoma risk factors are present.Comprehensive differential diagnosis should include lymphoma and other malignancies,and the diagnostic value of PET/CT and histopatholog-ical examination in disease evaluation is emphasized.SjD complicated by breast lymphoma is exceptional-ly rare,and its pathogenesis may involve lymphocytic infiltration,abnormal activation of lymphocytes,formation of ectopic germinal centers in the breast,and eventual malignant transformation.These mecha-nisms require further investigation through clinical and basic research studies.
10.Analysis and prevention of influencing factors for work-related musculoskeletal disorders among bus drivers
Yaling ZOU ; Jie ZHANG ; Wenyan HUANG ; Shiqi QIU ; Jintong HE ; Ning JIA ; Zhongxu WANG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2025;43(4):269-274
Objective:To investigate the occurrence of work-related musculoskeletal disorders (WMSDs) in bus drivers in Zhuhai City, analyze the ergonomic factors, and explore the prevention and control measures of WMSDs.Methods:From March to May 2023, 1675 active bus drivers from 5 branches of a bus group in Zhuhai were selected by stratified sampling method. The incidence of WMSDs among bus drivers in the past 12 months was investigated by using the modified Chinese Version of Musculoskeletal Disorders Questionnaire. The influencing factors of WMSDs were analyzed by χ2 test and generalized linear model. Results:The total incidence of WMSDs in bus drivers in the past 12 months was 47.2% (790/1675) , and the incidence of WMSDs in neck and shoulder and lower back was 36.9% (618/1675) and 31.7% (531/1675) , respectively. The χ2 test showed that there were statistically significant differences in the incidence of WMSDs among bus drivers with different individual factors such as body mass index (BMI) , physical exercise and looking down at mobile phones ( P<0.05) . There were significant differences in the incidence of WMSDs in the neck and shoulder of bus drivers with different years of service and number of stops on their routes ( P<0.05) . There were statistically significant differences in the incidence of WMSDs in the lower back of bus drivers with different one-way driving time, shift patterns, and rest breaks during work ( P<0.05) . Abnormal BMI, professional working years >12 years, uncomfortable working posture, frequent turning, slightly forward neck posture, large forward neck posture and long shoulder posture were the risk factors for WMSDs of bus drivers ( P<0.05) , and comfortable seat was the protective factor ( P<0.05) . One-way driving time >70 min, shift work schedules, uncomfortable working posture, slightly forward back posture, and frequent turning were the risk factors leading to lower back WMSDs ( P<0.05) , and physical exercise, comfortable driving cabin space, and seat comfort were the protective factors ( P<0.05) . Conclusion:The total incidence of WMSDs in bus drivers is higher, and ergonomic factors are related to the occurrence of WMSDs. In the implementation of bus driving space comfort, human-computer interaction interface friendliness and seat comfort, employers should be reasonable allocation of fitness facilities, regular training, reasonable shift organization and other measures to prevent and control the occurrence of bus drivers WMSDs.

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