1.Epidemiological and genetic characteristics of school influenza outbreaks in Changzhou from 2021 to 2024
Qiong LI ; Jingyi JIANG ; Li GONG ; Jian XU ; Xujian MAO ; Fengming WANG ; Ping YAO
Chinese Journal of Experimental and Clinical Virology 2025;39(5):617-622
Objective:To characterize the etiological and genetic features of pediatric influenza outbreaks in Changzhou between 2021 and 2024,with the goal of informing evidence-based prevention strategies and guiding effective management of influenza outbreaks in school settings.Methods:During the period of 2021 to 2024,throat swabs of influenza-like cases from school outbreaks in Changzhou were collected. These samples underwent real-time reverse transcription-polymerase chain reaction(RT-PCR)testing and virus isolation. Epidemiological data were integrated to conduct pathogenetic analysis. The HA genes of isolated strains were amplified and sequenced to perform genetic characterization.Results:Between 2021 and 2024,a total of 256 influenza outbreaks were reported in schools in Changzhou. A total of 3 201 specimens were collected,of which 2 245 were tested positive for influenza viruses,resulting in a positivity rate of 70.13%. The outbreak season was primarily concentrated from December to February each year,with settings predominantly distributed in primary schools(accounting for 73.83%). The predominant epidemic strains were influenza A viruses,including 118 outbreaks caused by H1N1 and 104 by H3N2. A total of 74 influenza virus strains were successfully isolated from positive specimens,and sequencing of the hemagglutinin(HA)gene was completed. Phylogenetic analysis revealed that certain B/Victoria lineage strains(e.g.,B/Changzhou/01/2021)clustered closely with the vaccine strain B/Austria/3594/17(bootstrap support:99%). Among influenza H1N1 strains,multiple isolates from 2023—2024 clustered within the same major branch as A/Victoria/4897/2022(bootstrap support:100%). In contrast,the H3N2 strains exhibited a complex evolutionary pattern,showing variable genetic distances to vaccine strains from different years(e.g.,A/Massachusetts/18/2022,A/Darwin/6/2021);some isolates were closely related to vaccine strains,while others were more distantly related and scattered across the phylogenetic tree.Conclusions:The influenza outbreak situation in schools was severe and has significant public health implications. Continuous surveillance is essential,and preventive strategies should be promptly adjusted based on the epidemiological and genetic characteristics of circulating strains.
2.Efficacy and safety of high-frequency repetitive transcranial magnetic stimulation in postherpetic neuralgia
Yu ZHAO ; Xiangyang TANG ; Zuosheng CHEN ; Fengming YAO ; Wei JIANG ; Fei XU
Chinese Journal of Neuromedicine 2025;24(8):799-805
Objective:To evaluate the efficacy and safety of high-frequency repetitive transcranial magnetic stimulation (hrTMS) in postherpetic neuralgia (PHN).Methods:A prospective randomized controlled trial was performed; 63 PHN patients treated in Department of Neurology and Department of Dermatology and Venereology of Anqing Municipal Hospital from June 2024 to March 2025 were enrolled; they were randomly assigned to 2 groups: an hrTMS group ( n=32) received hrTMS (frequency: 10 Hz; total pulses: 2,400; intensity: 90% of resting motor threshold) to the contralateral primary motor cortex (M1), and a sham stimulation group ( n=31) received sham stimulation using a sham figure-of-eight coil generating no actual magnetic field. Scores of short-form McGill pain questionnaires (pain rating index [PRI] total score, PRI sensory subscore, PRI affective subscore, visual analogue scale [VAS] score, present pain intensity [PPI] score) and N100 amplitude were collected before treatment and at 1, 2, 3, and 4 weeks after treatment. Adverse events during treatment were recorded. Results:At 2 weeks after treatment, significant difference was observed between the hrTMS group and sham stimulation group in PRI total score, VAS score, and N100 amplitude ( P<0.05). At 3 and 4 weeks after treatment, significant differences were found between the two groups in PRI total score, PRI sensory subscore, PRI affective subscore, VAS score, PPI score and N100 amplitude (3 weeks after treatment: 8.59±1.13 vs. 9.61±1.20, 5.34±0.79 vs. 5.90±0.94, 3.25±0.57 vs. 3.71±0.46, 5.78±0.66 vs. 6.42±0.92, 2.16±0.37 vs. 2.55±0.51, and [2.53±0.51] μV vs. [2.13±0.34] μV; 4 weeks after treatment: 7.53±0.92 vs. 9.68±1.35, 4.94±0.62 vs. 6.00±1.07, 2.59±0.56 vs. 3.68±0.60, 5.06±0.67 vs. 6.23±1.06, 1.97±0.17 vs. 2.52±0.51, and [2.81±0.40] μV vs. [2.16±0.52] μV, P<0.05). In the hrTMS group, PRI total score, PRI sensory subscore, PRI affective subscore, VAS score, PPI score and N100 amplitude were significantly different at 2, 3, and 4 weeks after treatment compared with those before treatment ( P<0.05). Incidence of adverse events (headache, dizziness or tinnitus) did not differ significantly between the two groups ( P>0.05). Conclusion:The hrTMS applied to the M1 region in PHN patients is effective by obviously reducing pain intensity and improving negative emotional states, with favorable safety profile.
3.Exploration and Practice of Talent Cultivation in Allied Health in the Context of the Integration of Medicine and Engineering
Zhenrong WANG ; Fengming LUO ; Zongan LIANG ; Guopeng LIANG ; Tingting LIU ; Yuemeng XU ; Zheng QU ; He YU
Journal of Sichuan University (Medical Sciences) 2025;56(4):1165-1170
The discipline of allied health sciences provides vital support to clinical diagnosis and treatment while promoting the translation of medical research into practice.As the integration of medicine and engineering deepens,talent cultivation in allied health faces new opportunities and challenges.Herein,we reviewed representative cases from domestic and international universities that have implemented interdisciplinary training in fields related to allied health,including exploration and practices concerning the development of cross-disciplinary platform,dual-degree programs,and collaborative education mechanisms involving the academia,industry,and research.We highlight the efforts of the School of Allied Health,West China School of Medicine,Sichuan University,which has continuously improved its disciplinary system and training programs through top-level planning and platform construction.The School of Allied Health Sciences has accelerated platform construction and established a new model for multidisciplinary collaborative education.At the practical level,the school has promoted curriculum reform through initiatives in ideological and political theories education,instructional system design,and the development of textbook systems.The school has created courses focused on the integration of medicine and engineering,interdisciplinary project-based modules,and specialized project-based curricula.These initiatives aim to strengthen the foundation for training high-level interdisciplinary professionals in allied health sciences under the evolving landscape of medicine-engineering integration.This articile also highlights other prospects,such as establishing a collaborative education model integrating medicine and engineering through industry-university-research collaboration,optimizing academic program structures,and enhancing professional certification systems,to inform policy-making and optimize practice.
4.Isolation and identification of mosquito-borne viruses in Huachuan county and Huanan county, Heilongjiang province, China
Han CHEN ; Fengming LIU ; Liqin YU ; Fan LI ; Shihong FU ; Qikai YIN ; Qianqian CUI ; Ruichen WANG ; Kai NIE ; Mingjia BAO ; Huanyu WANG ; Songtao XU
Chinese Journal of Experimental and Clinical Virology 2025;39(2):182-188
Objective:To investigate the mosquito-borne viruses carried by mosquito specimens collected from Huachuan county and Huanan county in Heilongjiang province.Methods:Mosquito samples were collected locally in 2023 and processed in the laboratory. Homogenates of the mosquitoes were inoculated into cells for virus isolation, followed by molecular and bioinformatics analyses of the viral isolates.Results:In 2023, ten viral isolates were obtained from Anopheles sinensis specimens collected in Heilongjiang province, China. Among these isolates, one was identified as Culex flavivirus (CxFV), one as Menghai rhabdovirus (MRV), and eight as Nam Dinh virus (NDiV). The phylogenetic analysis showed that CxFV belongs to genotype I and is clustered with the strains isolated from Liaoning province in 2011 and Ningxia Hui autonomous Region in 2019 in the same evolutionary branch, with amino acid similarity ranging from 98.2% to 99.2% and nucleotide similarity ranging from 98.8% to 99.2%. The MRV strain belongs to the same evolutionary subclade as the strain detected in Guangdong, with both nucleotide and amino acid similarity of 98.0%. Eight NDiV isolates clustered with the South Korean isolates on the same evolutionary branch, forming an independent evolutionary sub-branch. The nucleotide similarity among these eight isolates ranged from 98.5% to 99.7%, while the amino acid similarity ranged from 98.1% to 99.7%. In comparison, when matched with other NDiV isolates from China, the nucleotide similarity of these eight isolates ranged from 94.1% to 97.8%, and the amino acid similarity ranged from 93.5% to 97.7%.Conclusions:This study represents the first isolation of CxFV, MRV, and NDiV in Heilongjiang province, China, and the findings provide fundamental data for the prevention and control of mosquito-borne viral diseases in this region.
5.Epidemiological and genetic characteristics of school influenza outbreaks in Changzhou from 2021 to 2024
Qiong LI ; Jingyi JIANG ; Li GONG ; Jian XU ; Xujian MAO ; Fengming WANG ; Ping YAO
Chinese Journal of Experimental and Clinical Virology 2025;39(5):617-622
Objective:To characterize the etiological and genetic features of pediatric influenza outbreaks in Changzhou between 2021 and 2024,with the goal of informing evidence-based prevention strategies and guiding effective management of influenza outbreaks in school settings.Methods:During the period of 2021 to 2024,throat swabs of influenza-like cases from school outbreaks in Changzhou were collected. These samples underwent real-time reverse transcription-polymerase chain reaction(RT-PCR)testing and virus isolation. Epidemiological data were integrated to conduct pathogenetic analysis. The HA genes of isolated strains were amplified and sequenced to perform genetic characterization.Results:Between 2021 and 2024,a total of 256 influenza outbreaks were reported in schools in Changzhou. A total of 3 201 specimens were collected,of which 2 245 were tested positive for influenza viruses,resulting in a positivity rate of 70.13%. The outbreak season was primarily concentrated from December to February each year,with settings predominantly distributed in primary schools(accounting for 73.83%). The predominant epidemic strains were influenza A viruses,including 118 outbreaks caused by H1N1 and 104 by H3N2. A total of 74 influenza virus strains were successfully isolated from positive specimens,and sequencing of the hemagglutinin(HA)gene was completed. Phylogenetic analysis revealed that certain B/Victoria lineage strains(e.g.,B/Changzhou/01/2021)clustered closely with the vaccine strain B/Austria/3594/17(bootstrap support:99%). Among influenza H1N1 strains,multiple isolates from 2023—2024 clustered within the same major branch as A/Victoria/4897/2022(bootstrap support:100%). In contrast,the H3N2 strains exhibited a complex evolutionary pattern,showing variable genetic distances to vaccine strains from different years(e.g.,A/Massachusetts/18/2022,A/Darwin/6/2021);some isolates were closely related to vaccine strains,while others were more distantly related and scattered across the phylogenetic tree.Conclusions:The influenza outbreak situation in schools was severe and has significant public health implications. Continuous surveillance is essential,and preventive strategies should be promptly adjusted based on the epidemiological and genetic characteristics of circulating strains.
6.Isolation and identification of mosquito-borne viruses in Huachuan county and Huanan county, Heilongjiang province, China
Han CHEN ; Fengming LIU ; Liqin YU ; Fan LI ; Shihong FU ; Qikai YIN ; Qianqian CUI ; Ruichen WANG ; Kai NIE ; Mingjia BAO ; Huanyu WANG ; Songtao XU
Chinese Journal of Experimental and Clinical Virology 2025;39(2):182-188
Objective:To investigate the mosquito-borne viruses carried by mosquito specimens collected from Huachuan county and Huanan county in Heilongjiang province.Methods:Mosquito samples were collected locally in 2023 and processed in the laboratory. Homogenates of the mosquitoes were inoculated into cells for virus isolation, followed by molecular and bioinformatics analyses of the viral isolates.Results:In 2023, ten viral isolates were obtained from Anopheles sinensis specimens collected in Heilongjiang province, China. Among these isolates, one was identified as Culex flavivirus (CxFV), one as Menghai rhabdovirus (MRV), and eight as Nam Dinh virus (NDiV). The phylogenetic analysis showed that CxFV belongs to genotype I and is clustered with the strains isolated from Liaoning province in 2011 and Ningxia Hui autonomous Region in 2019 in the same evolutionary branch, with amino acid similarity ranging from 98.2% to 99.2% and nucleotide similarity ranging from 98.8% to 99.2%. The MRV strain belongs to the same evolutionary subclade as the strain detected in Guangdong, with both nucleotide and amino acid similarity of 98.0%. Eight NDiV isolates clustered with the South Korean isolates on the same evolutionary branch, forming an independent evolutionary sub-branch. The nucleotide similarity among these eight isolates ranged from 98.5% to 99.7%, while the amino acid similarity ranged from 98.1% to 99.7%. In comparison, when matched with other NDiV isolates from China, the nucleotide similarity of these eight isolates ranged from 94.1% to 97.8%, and the amino acid similarity ranged from 93.5% to 97.7%.Conclusions:This study represents the first isolation of CxFV, MRV, and NDiV in Heilongjiang province, China, and the findings provide fundamental data for the prevention and control of mosquito-borne viral diseases in this region.
7.Efficacy and safety of high-frequency repetitive transcranial magnetic stimulation in postherpetic neuralgia
Yu ZHAO ; Xiangyang TANG ; Zuosheng CHEN ; Fengming YAO ; Wei JIANG ; Fei XU
Chinese Journal of Neuromedicine 2025;24(8):799-805
Objective:To evaluate the efficacy and safety of high-frequency repetitive transcranial magnetic stimulation (hrTMS) in postherpetic neuralgia (PHN).Methods:A prospective randomized controlled trial was performed; 63 PHN patients treated in Department of Neurology and Department of Dermatology and Venereology of Anqing Municipal Hospital from June 2024 to March 2025 were enrolled; they were randomly assigned to 2 groups: an hrTMS group ( n=32) received hrTMS (frequency: 10 Hz; total pulses: 2,400; intensity: 90% of resting motor threshold) to the contralateral primary motor cortex (M1), and a sham stimulation group ( n=31) received sham stimulation using a sham figure-of-eight coil generating no actual magnetic field. Scores of short-form McGill pain questionnaires (pain rating index [PRI] total score, PRI sensory subscore, PRI affective subscore, visual analogue scale [VAS] score, present pain intensity [PPI] score) and N100 amplitude were collected before treatment and at 1, 2, 3, and 4 weeks after treatment. Adverse events during treatment were recorded. Results:At 2 weeks after treatment, significant difference was observed between the hrTMS group and sham stimulation group in PRI total score, VAS score, and N100 amplitude ( P<0.05). At 3 and 4 weeks after treatment, significant differences were found between the two groups in PRI total score, PRI sensory subscore, PRI affective subscore, VAS score, PPI score and N100 amplitude (3 weeks after treatment: 8.59±1.13 vs. 9.61±1.20, 5.34±0.79 vs. 5.90±0.94, 3.25±0.57 vs. 3.71±0.46, 5.78±0.66 vs. 6.42±0.92, 2.16±0.37 vs. 2.55±0.51, and [2.53±0.51] μV vs. [2.13±0.34] μV; 4 weeks after treatment: 7.53±0.92 vs. 9.68±1.35, 4.94±0.62 vs. 6.00±1.07, 2.59±0.56 vs. 3.68±0.60, 5.06±0.67 vs. 6.23±1.06, 1.97±0.17 vs. 2.52±0.51, and [2.81±0.40] μV vs. [2.16±0.52] μV, P<0.05). In the hrTMS group, PRI total score, PRI sensory subscore, PRI affective subscore, VAS score, PPI score and N100 amplitude were significantly different at 2, 3, and 4 weeks after treatment compared with those before treatment ( P<0.05). Incidence of adverse events (headache, dizziness or tinnitus) did not differ significantly between the two groups ( P>0.05). Conclusion:The hrTMS applied to the M1 region in PHN patients is effective by obviously reducing pain intensity and improving negative emotional states, with favorable safety profile.
8.Effects of Buyang Huanwu Decoction Mediating Cav1 in Regulating Wnt Pathway on Neuronal Cell Apoptosis in Cerebral Ischemia Mice
Yin OUYANG ; Fanzuo ZENG ; Zhenkui LIU ; Bowei CHEN ; Yingfei LIU ; Jian YI ; Fengming TIAN ; Yaqian XU ; Baiyan LIU
Chinese Journal of Information on Traditional Chinese Medicine 2024;31(11):104-109
Objective To explore the effects of Buyang Huanwu Decoction on neuronal cell apoptosis after cerebral ischemia based on mediating Cav1 in regulating Wnt pathway.Methods Male wild-type(WT)and Cav1-/-(KO)C57BL/6 mice were randomly divided into sham-operation group,model group and Buyang Huanwu Decoction group(18.5 g/kg).Cerebral ischemia model was prepared using middle cerebral artery occlusion method,and drug intervention was given for 14 days.Neurobehavioral score was performed,HE staining was used to observe the morphology of ischemic cortical area of brain tissue,TUNEL staining was used to detect neuronal apoptosis in ischemic cortical area,immunohistochemistry was used to detect the expressions of apoptosis related proteins and Wnt1,glycogen synthase kinase 3β(GSK3β)and β-catenin protein in ischemic cortical area.Results Compared with the same genotype sham-operation group,the neurobehavioral score of the model group mice significantly increased,neuronal cells in the ischemic cortical area showed vacuolar changes,with nuclear condensation and widened intercellular spaces,the apoptosis rate of nerve cells significantly increased,with increased expressions of Bax,GSK3β and decreased expressions of Bcl-2,Wnt1 and β-catenin(P<0.01).Compared with the same genotype model group,the neurobehavioral score of mice in Buyang Huanwu Decoction group were significantly decreased,the pathological damage of the ischemic cortical area improved,the apoptosis rate of nerve cells decreased,the expressions of Bax and GSK3β decreased,and the expressions of Bcl-2,Wnt1 and β-catenin increased(P<0.01).Compared with the WT model group,the KO model group showed an increase in neurobehavioral score,aggravated damage in ischemic cortical area,significantly increased neuronal apoptosis rate,and increased expression of GSK3β(P<0.05).Compared with the WT Buyang Huanwu Decoction group,the KO Buyang Huanwu Decoction group showed an increase in neurobehavioral score,aggravated damage in ischemic cortical area,significantly increased neuronal apoptosis rate,increased expressions of Bax and GSK3β,and decreased expressions of Bcl-2,Wnt1 and β-catenin(P<0.01).Conclusion Buyang Huanwu Decoction can inhibit neuronal cell apoptosis after cerebral ischemia,and its mechanism may be related to regulating the expressions of apoptosis-related proteins by mediating Cav1 to regulate the Wnt signaling pathway.
9.The Predictive Value of MMP-9 the and NLR Values for Bleeding Transformation after the Revascularization in Acute Ischemic Stroke
Baogang HUANG ; Kang DU ; Fengming XU ; Haohao WU ; Shaoyong GUAN ; Qianjun FAN ; Junsu YANG ; Fang QIAN
Journal of Kunming Medical University 2024;45(1):116-121
Objective To study the correlation between the changes of matrix metalloproteinase-9(MMP-9)and neutrophil/lymphocyte ratio(NLR)before and after the revascularization of acute ischemic stroke(AIS),so as to find biomarkers to predict the bleeding transformation risk of AIS patients.Methods From February 2022 to December 2022,161 patients admitted to the Stroke Center of Qujing Hospital Affiliated to Kunming Medical University with AIS werre divided in to the hemorrhagic transformation group and the non-hemorrhagic transfor-mation groupand treated with revascularization(intravenous thrombolysis,endovascular treatment,combined the intravenous thrombolysis with endovascular treatment).Among them,there were 46 cases in the hemorrhagic transformation group and 115 cases in the non hemorrhagic transformation group.And the general data,NLR value and MMP-9 before and after the revascularization were compared between the two groups.Results There was no statistical difference in general data between the two groups(all P>0.05)except for C-reactive protein in hemorrhagic transformation group and in non-hemorrhagic transformation group(P<0.001).The white blood cells,neutrophils,neutrophil percentage,neutrophil absolute value,lymphocyte absolute value,NLR and MMP-9 value in hemorrhagic transformation group were significantly higher than those in non-hemorrhagic transformation group before the treatment and there was a statistical significance(P<0.05).After revascularization,the indexes of blood routine and MMP-9 were significantly higher than those before the revascularization,and the increase in hemorrhagic transformation group was more obvious than that in non-hemorrhagic transformation group and there was a statistical significance(P<0.001),The ROC curve showed that the area under the curve(AUC)of NLR and MMP-9 predicting bleeding transformation after AIS revascularization were 0.74 and 0.90.Conclusion NLR,MMP-9 are associated with the risk of bleeding transformation in AIS patients after the revascularization and can they can be used as the predictive factors for bleeding transformation risk.
10.Mevalonate improves anti-PD-1/PD-L1 efficacy by stabilizing CD274 mRNA.
Wenxin ZHANG ; Xiaohui PAN ; Yanjun XU ; Hongjie GUO ; Mingming ZHENG ; Xi CHEN ; Honghai WU ; Fengming LUAN ; Qiaojun HE ; Ling DING ; Bo YANG
Acta Pharmaceutica Sinica B 2023;13(6):2585-2600
Mevalonate metabolism plays an important role in regulating tumor growth and progression; however, its role in immune evasion and immune checkpoint modulation remains unclear. Here, we found that non-small cell lung cancer (NSCLC) patients with higher plasma mevalonate response better to anti-PD-(L)1 therapy, as indicated by prolonged progression-free survival and overall survival. Plasma mevalonate levels were positively correlated with programmed death ligand-1 (PD-L1) expression in tumor tissues. In NSCLC cell lines and patient-derived cells, supplementation of mevalonate significantly up-regulated the expression of PD-L1, whereas deprivation of mevalonate reduced PD-L1 expression. Mevalonate increased CD274 mRNA level but did not affect CD274 transcription. Further, we confirmed that mevalonate improved CD274 mRNA stability. Mevalonate promoted the affinity of the AU-rich element-binding protein HuR to the 3'-UTR regions of CD274 mRNA and thereby stabilized CD274 mRNA. By in vivo study, we further confirmed that mevalonate addition enhanced the anti-tumor effect of anti-PD-L1, increased the infiltration of CD8+ T cells, and improved cytotoxic function of T cells. Collectively, our findings discovered plasma mevalonate levels positively correlated with the therapeutic efficacy of anti-PD-(L)1 antibody, and provided the evidence that mevalonate supplementation could be an immunosensitizer in NSCLC.

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