1.Visual detection of neurovascular coupling in mouse brain based on two-photon imaging
Xiao-fen ZHOU ; Ya-xian ZHAO ; Run ZHOU ; Wen-bin HE ; Zhao ZHANG ; Shi-feng CHU
Chinese Pharmacological Bulletin 2025;41(10):1991-1997
Aim To establish a simple and practical method for visualizing neurovascular coupling in the mouse barrel cortex in vivo.Methods Male C57BL/6J mice received stereotaxic in-jections of pAAV-hSyn-jGCaMP7s-WPRE into the barrel cortex to monitor neuronal activity.Three weeks post-injection,a crani-al window was implanted,and TRITC-Dextran 155 ku was ad-ministered intravenously to visualize the vasculature and blood flow dynamics.A custom-built whisker stimulator was used to e-voke controlled neuronal excitation.Two-photon microscopy was employed to monitor neuronal and vascular responses to whisker stimulation in real-time.Results Neuronal calcium signals and plasma signals were clearly observed using two-photon microsco-py.Whisker stimulation led to a significant increase in neuronal calcium signals in the barrel cortex,indicating effective neuronal activation.This neuronal excitation was accompanied by a syn-chronous increase in blood vessel diameter,blood flow velocity and overall blood flow.Conclusions This study successfully establishes a three-dimensional visualization framework(spatial,temporal,and functional)for in vivo visualization of neurovascu-lar coupling in the mouse barrel cortex,which provides a useful tool for investigating the pathophysiological mechanisms of neuro-vascular dysfunction and evaluating the efficacy of potential ther-apies.
2.Research status of global monkeypox based on bibliometric analysis
Xin-yu WANG ; Xue-lin HOU ; Ji-bin XIN ; Xian ZHOU
Fudan University Journal of Medical Sciences 2025;52(2):171-179,200
Objective To analyze the global research literature on monkeypox from 2014 to 2024 through bibliometric analysis,and provide reference for monkeypox research in China.Methods Based on data from the Web of Science Core Collection database and utilizing the visualization analysis capabilities of VOSviewer software,we employed keyword co-occurrence analysis and national cooperative network analysis methods and examined the trends in monkeypox research publications,popular journals,high-yield institutions,international collaborations,and keywords.Results A total of 2 396 papers were published from 2014 to 2024,with a significant increase in publications after 2022.The United States had the highest number of publications(808 papers,accounting for 33.72%).The network of international scientific collaborations showed close cooperation between the United States and countries like the United Kingdom and Canada,frequent collaborations among developing countries such as China and India,and extensive cooperation among European countries like Italy and Spain,which also established partnerships with Brazil,Mexico,and others.Keywords co-occurrence clustering and essential science indicators(ESI)highly cited papers revealed that the monkeypox research hotspots after 2022 including the analysis of the virology,clinical,epidemiological characteristics of the global outbreak in 2022,uncovering the causes of the global outbreak and the differences from previous outbreaks.Studies on vaccines and antiviral drugs also gradually became focal points.Conclusion Since the outbreak of monkeypox in 2022,monkeypox research has developed rapidly.Papers focus on specific populations,and gradually shifting from virological,clinical and epidemiological characterization to the development of new drugs,vaccines,and clinical validation studies.
3.Current status and prospects of malaria vaccine research based on bibliometric analysis
Xian ZHOU ; Xue-lin HOU ; Xin-yu WANG ; Ji-bin XIN
Fudan University Journal of Medical Sciences 2025;52(2):190-200
Objective To analyze the current status of malaria vaccine research from 2019 to 2024 by using bibliometric methods.Methods Based on the Web of Science core collection database,we used VOSviewer to conduct a visual analysis of the publishing trends,publishing journals,international cooperation status,institutions and research hotspots of malaria vaccine research.Results A total of 2 467 relevant articles were retrieved,and the annual number of publications showed a stable trend.The number of articles published by different countries/regions varied greatly,and the top effect was obvious.The United States published the most papers(1 032 articles,41.83%).The international cooperation network reflected the regional collaborative relationships in malaria vaccine research,predominantly involving the United States,the United Kingdom,Australia,India and China.Through keyword co-occurrence clustering,the current research hotspots in the field of malaria vaccines were basic research on key sites and mechanisms of potential vaccines,clinical research on new vaccines,epidemiological studies on the impact of malaria vaccines on malaria transmission,etc.Conclusion In recent years,malaria vaccine research has received sustained attention.The translation of clinical research on malaria vaccine was currently accelerating,and children and women were still the key groups of concern.
4.Visual detection of neurovascular coupling in mouse brain based on two-photon imaging
Xiao-fen ZHOU ; Ya-xian ZHAO ; Run ZHOU ; Wen-bin HE ; Zhao ZHANG ; Shi-feng CHU
Chinese Pharmacological Bulletin 2025;41(10):1991-1997
Aim To establish a simple and practical method for visualizing neurovascular coupling in the mouse barrel cortex in vivo.Methods Male C57BL/6J mice received stereotaxic in-jections of pAAV-hSyn-jGCaMP7s-WPRE into the barrel cortex to monitor neuronal activity.Three weeks post-injection,a crani-al window was implanted,and TRITC-Dextran 155 ku was ad-ministered intravenously to visualize the vasculature and blood flow dynamics.A custom-built whisker stimulator was used to e-voke controlled neuronal excitation.Two-photon microscopy was employed to monitor neuronal and vascular responses to whisker stimulation in real-time.Results Neuronal calcium signals and plasma signals were clearly observed using two-photon microsco-py.Whisker stimulation led to a significant increase in neuronal calcium signals in the barrel cortex,indicating effective neuronal activation.This neuronal excitation was accompanied by a syn-chronous increase in blood vessel diameter,blood flow velocity and overall blood flow.Conclusions This study successfully establishes a three-dimensional visualization framework(spatial,temporal,and functional)for in vivo visualization of neurovascu-lar coupling in the mouse barrel cortex,which provides a useful tool for investigating the pathophysiological mechanisms of neuro-vascular dysfunction and evaluating the efficacy of potential ther-apies.
5.Optimization of Laser-Induced Breakdown Spectroscopy Parameters for Phosphorus Detection in Water Using Orthogonal Experiment
Xin-Yan YANG ; Xin WANG ; Wen-Wen ZHOU ; Yi-Heng LI ; Peng ZHU ; Bin WANG ; Xian-Feng ZHENG
Chinese Journal of Analytical Chemistry 2025;53(11):1921-1930
Aerosol-assisted plasma amplification laser-induced breakdown spectroscopy(LIBS)was employed for phosphorus detection in water.To address the multivariate coupling effects in LIBS and nebulization sampling system,an orthogonal experiment was employed to systematically optimize the key experimental parameters.Using the orthogonal experimental design,the parametric effects of laser energy(output voltage),signal acquisition delay,liquid velocity,and gas velocity on the signal to background ratio(SBR)of P I 213.618 nm were evaluated,and the optimal conditions were achieved,including laser energy of 86 mJ,delay time of 3 μs,gas velocity of 1.05 mL/min,and liquid velocity of 60 μL/min,which were in agreement with the control-variable optimization results.Moreover,the SBR response trends at P I 213.618 nm with all experimental parameters was strong in consistency with control-variable optimization results,which demonstrated the validity of the orthogonal array experimental design.This study established an efficient and accurate parameter optimization methodology for complex LIBS systems,significantly advancing the application of LIBS in environmental monitoring.
6.Research status of global monkeypox based on bibliometric analysis
Xin-yu WANG ; Xue-lin HOU ; Ji-bin XIN ; Xian ZHOU
Fudan University Journal of Medical Sciences 2025;52(2):171-179,200
Objective To analyze the global research literature on monkeypox from 2014 to 2024 through bibliometric analysis,and provide reference for monkeypox research in China.Methods Based on data from the Web of Science Core Collection database and utilizing the visualization analysis capabilities of VOSviewer software,we employed keyword co-occurrence analysis and national cooperative network analysis methods and examined the trends in monkeypox research publications,popular journals,high-yield institutions,international collaborations,and keywords.Results A total of 2 396 papers were published from 2014 to 2024,with a significant increase in publications after 2022.The United States had the highest number of publications(808 papers,accounting for 33.72%).The network of international scientific collaborations showed close cooperation between the United States and countries like the United Kingdom and Canada,frequent collaborations among developing countries such as China and India,and extensive cooperation among European countries like Italy and Spain,which also established partnerships with Brazil,Mexico,and others.Keywords co-occurrence clustering and essential science indicators(ESI)highly cited papers revealed that the monkeypox research hotspots after 2022 including the analysis of the virology,clinical,epidemiological characteristics of the global outbreak in 2022,uncovering the causes of the global outbreak and the differences from previous outbreaks.Studies on vaccines and antiviral drugs also gradually became focal points.Conclusion Since the outbreak of monkeypox in 2022,monkeypox research has developed rapidly.Papers focus on specific populations,and gradually shifting from virological,clinical and epidemiological characterization to the development of new drugs,vaccines,and clinical validation studies.
7.Current status and prospects of malaria vaccine research based on bibliometric analysis
Xian ZHOU ; Xue-lin HOU ; Xin-yu WANG ; Ji-bin XIN
Fudan University Journal of Medical Sciences 2025;52(2):190-200
Objective To analyze the current status of malaria vaccine research from 2019 to 2024 by using bibliometric methods.Methods Based on the Web of Science core collection database,we used VOSviewer to conduct a visual analysis of the publishing trends,publishing journals,international cooperation status,institutions and research hotspots of malaria vaccine research.Results A total of 2 467 relevant articles were retrieved,and the annual number of publications showed a stable trend.The number of articles published by different countries/regions varied greatly,and the top effect was obvious.The United States published the most papers(1 032 articles,41.83%).The international cooperation network reflected the regional collaborative relationships in malaria vaccine research,predominantly involving the United States,the United Kingdom,Australia,India and China.Through keyword co-occurrence clustering,the current research hotspots in the field of malaria vaccines were basic research on key sites and mechanisms of potential vaccines,clinical research on new vaccines,epidemiological studies on the impact of malaria vaccines on malaria transmission,etc.Conclusion In recent years,malaria vaccine research has received sustained attention.The translation of clinical research on malaria vaccine was currently accelerating,and children and women were still the key groups of concern.
8.Clinical characteristics and outcomes of psoriasis patients with COVID-19: A retrospective, multicenter cohort study in China
Yanhua LIU ; Zhongrui XU ; Jian ZHOU ; Aijun CHEN ; Junling ZHANG ; Xiaojing KANG ; Xian JIANG ; Chengzhi LYU ; Chunrui SHI ; Yuling SHI ; Xiaoming LIU ; Fuqiu LI ; Bin YANG ; Yongmei HUANG ; Chen YU ; Gang WANG
Chinese Medical Journal 2024;137(14):1736-1743
Background::Limited information exists regarding the impact of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection on psoriasis patients. The objective of this study was to identify clinical factors associated with the prognosis of psoriasis following SARS-CoV-2 infection.Methods::A retrospective, multicenter study was conducted between March and May 2023. Univariable and multivariable logistic regression analyses were employed to identify factors associated with coronavirus disease 2019 (COVID-19)-related psoriasis outcomes. The study included 2371 psoriasis patients from 12 clinical centers, with 2049 of them having been infected with SARS-CoV-2.Results::Among the infected groups, lower exacerbation rates were observed in individuals treated with biologics compared to those receiving traditional systemic or nonsystemic treatments (22.3% [236/1058] vs. 39.8% [92/231] vs. 37.5% [140/373], P <0.001). Psoriasis progression with lesions (adjusted odds ratio [OR] = 8.197, 95% confidence interval [95% CI] = 5.685–11.820, compared to no lesions), hypertension (adjusted OR = 1.582, 95% CI = 1.068–2.343), traditional systemic (adjusted OR = 1.887, 95% CI= 1.263–2.818), and nonsystemic treatment (adjusted OR= 1.602, 95% CI= 1.117–2.297) were found to be associated with exacerbation of psoriasis after SARS-CoV-2 infection, but not biologics (adjusted OR = 0.931, 95% CI = 0.680–1.274, compared to no treatment), according to multivariable logistic regression analysis. Conclusions::A reduced risk of psoriasis exacerbation after SARS-CoV-2 infection was observed with biologics compared to traditional systemic and nonsystemic treatments. Significant risk factors for exacerbation after infection were identified as existing psoriatic lesions and hypertension.
9.Coronary artery perforation after using shockwave balloon during percutaneous coronary intervention treatment:a case report
Chen-Ji XU ; Fei LI ; Fa ZHENG ; Bin ZHANG ; Feng-Xia QU ; Jian-Meng WANG ; Ya-Qun ZHOU ; Xian-Liang LI ; Song-Tao WANG ; Yan SHAO ; Chang-Hong LU
Chinese Journal of Interventional Cardiology 2024;32(7):405-408
Coronary perforation is when a contrast agent or blood flows outside a blood vessel through a tear in a coronary artery.In this case,we reported a case of percutaneous coronary intervention for coronary calcified lesions,which led to iatrogenic coronary perforation and cardiac tamponade after the use of Shockwave balloon to treat intracoronary calcified nodules,and the management of PCI-related CAP was systematically reviewed through the literature.
10.Adult carotid body tumors in Northwest China: a multicenter, retrospective cross-sectional study
Wenyu XIE ; Hongchen ZHANG ; Yuan FENG ; Zheming YUE ; Lei ZHANG ; Shuhui DAI ; Jun REN ; Chunming XIAN ; Jie ZHOU ; Bin ZHANG ; Xia LI
Chinese Journal of Neuromedicine 2024;23(1):34-41
Objective:To analyze the clinical and epidemiological characteristics of adult carotid body tumors (CBTs) in Northwest China to provide references for early diagnosis and treatment of CBTs.Methods:A multicenter, retrospective, non-intervention epidemiological investigation was conducted on adult CBTs patients who were hospitalized from January 1, 2011 to June 30, 2023 in 7 Class A tertiary hospitals in Northwest China (Departments of Neurosurgery, First Affiliated Hospital of Air Force Medical University, Second Affiliated Hospital of Lanzhou University, People's Hospital of Gansu Province, 940 th Hospital of PLA Joint Logistic Support Force, People's Hospital of Qinghai Province, General Hospital of Ningxia Medical University, People's Hospital of Ningxia Hui Autonomous Region). Medical records were collected in these patients, and they were divided into 2 groups according to their average altitude residence: high altitude group (≥1 500 m) and low altitude group (<1 500 m); meanwhile, these patients were divided into Shamblin type I, type II and type III groups according to Shamblin classification criteria; differences in general data and clinical features among patients from different altitude groups or Shamblin subgroups were compared. Independent influencing factors for Shamblin type III CBTs were analyzed by multivariate ordered Logistic regression. Results:(1) A total of 359 patients were enrolled in the study, including 276 females and 83 males, aged (48.80±12.07) years; 211 patients were into the high altitude group and 148 into the low altitude group; 165 patients were into Shamblin type I group, 146 into Shamblin type II group, and 48 into Shamblin type III group. (2) Compared with those in the low altitude group, patients in the high altitude group had higher proportion of females, older age, lower proportion of Han nationality, higher proportion of Shamblin type I, smaller tumor volume, lower platelet count, higher red blood cell count, hematocrit, hemoglobin level, platelet distribution width and mean platelet volume, and higher large platelet percentage, with significant differences ( P<0.05). (3) Compared with those in the Shamblin type I group, patients in the Shamblin type III group had younger age, lower resident altitude, larger tumor volume, longer time interval from onset to diagnosis, higher proportion of unintentional tumor discovery, larger volume of intraoperative blood loss, lower hemoglobin level, hematocrit, mean erythrocyte volume, and mean hemoglobin concentration, decreased erythrocyte distribution width variable coefficient, and increased platelet count, with significant differences ( P<0.05). Compared with those in the Shamblin type II group, patients in Shamblin type III group had younger age, larger tumor volume, longer time interval from onset to diagnosis, larger volume of intraoperative blood loss, lower hemoglobin, hematocrit and mean erythrocyte volume, higher erythrocyte distribution width variable coefficient and platelet count, with significant differences ( P<0.05). (4) Age ( OR=0.960, 95% CI: 0.942-0.977, P<0.001), residence altitude ( OR=0.992, 95% CI: 0.990-0.999, P=0.020) and time interval from onset to diagnosis ( OR=1.009, 95% CI: 1.005-1.014, P<0.001) were independent influencing factors for Shamblin type III CBTs. Conclusions:More females than males are noted in patients with adult CBTs in Northwest China, and more CBTs patients live at high altitude, with Shamblin type I enjoying the highest proportion. More female and old patients lived at high altitude is noted than those lived at low altitude; patients with Shamblin type III have the youngest age, lowest altitude, and longest time interval from onset to diagnosis. CBTs patients with young age, low residence altitude, and long time interval from onset to diagnosis are more likely to develop Shamblin type III.

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