Analysis of three-dimensional visualization imaging of severe portal vein stenosis after liver transplantation and clinical efficacy of portal vein stent implantation / 器官移植

Objective To analyze three-dimensional imaging characteristics and advantages for severe portal vein stenosis after liver transplantation, and to evaluate clinical efficacy of portal vein stent implantation. Methods Clinical data of 10 patients who received portal vein stent implantation for severe portal vein stenosis after liver transplantation were retrospectively analyzed. Imaging characteristics of severe portal vein stenosis, and advantages of three-dimensional reconstruction imaging and interventional treatment efficacy for severe portal vein stenosis were analyzed. Results Among 10 patients, 3 cases were diagnosed with centripetal stenosis, tortuosity angulation-induced stenosis in 2 cases, compression-induced stenosis in 2 cases, long-segment stenosis and/or vascular occlusion in 3 cases. Three-dimensional reconstruction images possessed advantages in accurate identification of stenosis, identification of stenosis types and measurement of stenosis length. All patients were successfully implanted with portal vein stents. After stent implantation, the diameter of the minimum diameter of portal vein was increased [(6.2±0.9) mm vs. (2.6±1.7) mm, P<0.05], the flow velocity at anastomotic site was decreased [(57±19) cm/s vs. (128±27) cm/s, P<0.05], and the flow velocity at the portal vein adjacent to the liver was increased [(41±6) cm/s vs. (18±6) cm/s, P<0.05]. One patient suffered from intrahepatic hematoma caused by interventional puncture, which was mitigated after conservative observation and treatment. The remaining patients did not experience relevant complications. Conclusions Three-dimensional visualization technique may visually display the location, characteristics and severity of stenosis, which is beneficial for clinicians to make treatment decisions and assist interventional procedures. Timely implantation of portal vein stent may effectively reverse pathological process and improve portal vein blood flow.

Research progress on the stress-strain index of Corvis ST / 国际眼科杂志(Guoji Yanke Zazhi)

Corneal visualization Scheimpflug technology(Corvis ST)is currently the most commonly used clinical device for assessing in vivo corneal biomechanics. The new parameter stress-strain index(SSI)has been a hot topic of clinical research in recent years, which not only directly reflect corneal biomaterial stiffness, but also closely correlates with the progression of certain diseases. SSI was generated based on the predictions of corneal behavior using finite element(FE)numerical modeling to simulate the effects of intraocular pressure and Corvis ST jets. The SSI algorithm does not change with central corneal thickness(CCT), intraocular pressure, or biomechanically corrected intraocular pressure(BIOP), but it is clearly associated with altered collagen fibres in the corneosclera. The principles of SSI, the relationship between age and SSI, the relationship between axial length and SSI, the relationship between myopia and SSI, and the application of SSI are summarized and concluded.

MobileNetV3 network-based diagnosis of caries and periapical periodontitis from periapical films / 口腔疾病防治

Objective@#To research the effectiveness of deep learning techniques in intelligently diagnosing dental caries and periapical periodontitis and to explore the preliminary application value of deep learning in the diagnosis of oral diseases@*Methods@#A dataset containing 2 298 periapical films, including healthy teeth, dental caries, and periapical periodontitis, was used for the study. The dataset was randomly divided into 1 573 training images, 233 validation images, and 492 test images. By comparing various neural network models, the MobileNetV3 network model with better performance was selected for dental disease diagnosis, and the model was optimized by tuning the network hyperparameters. The accuracy, precision, recall, and F1 score were used to evaluate the model's ability to recognize dental caries and periapical periodontitis. Class activation map was used to visualization analyze the performance of the network model@*Results@#The algorithm achieved a relatively ideal intelligent diagnostic effect with precision, recall, and accuracy of 99.42%, 99.73%, and 99.60%, respectively, and the F1 score was 99.57% for classifying healthy teeth, dental caries, and periapical periodontitis. The visualization of the class activation maps also showed that the network model can accurately extract features of dental diseases.@*Conclusion@#The tooth lesion detection algorithm based on the MobileNetV3 network model can eliminate interference from image quality and human factors and has high diagnostic accuracy, which can meet the needs of dental medicine teaching and clinical applications.

Representaciones de estudiantes sobre el conflicto mapuche en Chile y Argentina / Representations of students regarding the Mapuche conflict in Chile and Argentina / Representações estudantis sobre o conflito mapuche no Chile e na Argentina

(analítico) Las investigaciones de las representaciones sociales de estudiantes acerca de los problemas contemporáneos representan un espacio fundamental de exploración. Este estudio busca analizar las representaciones de estudiantes de educación primaria chilenos y argentinos sobre el conflicto entre los Estados de Chile, Argentina y el pueblo mapuche. La investigación es cualitativa, con un enfoque de teoría fundamentada y los datos recolectados a través de grupos focales en escuelas chilenas y argentinas. El análisis realizado se basa en los procedimientos del paradigma de la codificación, con el motivo de indagar de manera procesual y estructural las representaciones sociales. Los resultados revelan el rol que otorgan los estudiantes a la enseñanza de la historia. Las conclusiones sostienen que la enseñanza de la historia no contribuye a la comprensión de este problema.

(analytical) Research on social representations constructed by students in relation to contemporary problems represents a fundamental space for investigative exploration. This study sought to analyze the representations of Chilean and Argentine primary school students regarding the "conflict" between the Chile, Argentina and the Mapuche people. The research was qualitative and used a grounded theory approach. The data was collected through holding focus groups in Chilean and Argentine schools. The analysis involved the use of coding paradigm procedures in order to investigate social representations in a procedural and structural way. The results reveal the role that students give to the teaching of History. The conclusions identify that the teaching of History does not contribute to the understanding of this problem.

(analítico) Este estudo examina o conhecimento sobre as propriedades formais e a função referencial de desenho, escrita e numerais que mães, filhos e filhas (2 anos e meio e 4 anos) apresentados em tarefa de produção conjunta. O método comparativo constante foi utilizado para a construção do sistema de codificação; se analisou mediante provas não paramétricas. As duplas do grupo de 2 anos e meio conversaram sobre a função referencial dos três sistemas, especialmente do desenho. No grupo de 4 anos aumentaram o interesse pela escrita, a consideração das propriedades formais da escrita e dos numerais e as produções independentes de desenho e escrita. O estudo mostrou a produção gráfica conjunta como uma interação educacional na família que estimula a apropriação precoce de sistemas de representação externa.

Análisis y visualización de datos de infección por SARS-CoV-2 de la población atendida en los establecimientos de salud de atención primaria de la Corporación Municipal de Viña del Mar, durante los años 2021-2022 / Analysis and visualization of data on infection by SARS-CoV-2 the population of the primary care health attended in the establishments of the Corporación Municipal de Viña del Mar, during the years 2021-2022

ntroducción: en Chile, la circulación del virus SARS-CoV-2 se inició el 03 de marzo de 2020, desencadenando un rápido aumento de casos en el país. Los datos epidemiológicos y de movilidad fueron fundamentales, para evitar la propagación y severidad de la infección. Sin embargo, la limitación de ser extrapolados desde niveles de división administrativa mayor a niveles menores, ha dificultado la toma de decisiones. Una forma de resolver esto, es analizar y visualizar los datos de la infección en su contexto local, como los datos recopilados desde la Atención Primaria en Salud. Materiales y Métodos: estudio que analizó y visualizó, mediante Microsoft Excel, Stata y Looker Studio, 173.881 exámenes de SARS-CoV-2 realizados en la Corporación Municipal de Viña del Mar (366.981 beneficiarios), durante los años 2021-2022. Resultados: Se obtuvieron 33.633 casos positivos para SARS-CoV-2, de los cuales 11.084 pertenecen al rango etario entre 30 a 49 años. CESFAM Dr. Jorge Kaplán presentó mayor cantidad de casos positivos (5.838), mientras que CECOSF Villa Hermosa la menor cantidad (628). CECOSF Sergio Donoso y Santa Julia presentaron una cantidad notable de casos positivos entre 0 a 14 y 70 a 79 años, respectivamente. Discusión: existió una relación importante entre la cantidad de muestras y casos positivos según lugar de toma de muestra, jurisdicción, población per cápita atendida por jurisdicción y su distribución espacial. Conclusión: la metodología realizada permitió analizar y visualizar los datos de infección por SARS-CoV-2 por jurisdicción, lo que se puede utilizar para observar tendencias y generar estrategias para la comuna.

Introduction: in Chile, the circulation of the SARS-CoV-2 virus began on March 3, 2020, triggering a rapid increase in cases in the country. Epidemiological and mobility data were essential to prevent the spread and severity of the infection. However, the limitation of being extrapolated from higher levels of administrative division to lower levels has made decision-making difficult. One way to solve this is to analyze and visualize infection data in its local context, such as data collected from Primary Health Care.Materials and Methods: a study that analyzed and visualized, using Microsoft Excel, Stata, and Looker Studio, 173,881 SARS-CoV-2 tests performed in the Viña del Mar Municipal Corporation (366,981 beneficiaries) during 2021-2022.Results: there were 33,633 positive cases for SARS-CoV-2, of which 11,084 were in the age range between 30 and 49 years. CESFAM Dr. Jorge Kaplán had the highest positive cases (5,838), while CECOSF Villa Hermosa had the lowest number (628). CECOSF Sergio Donoso and Santa Julia had a notable number of positive cases between 0 and 14 and 70 to 79 years, respectively. Discussion: there was a significant re lationship between the number of samples and positive cases by sampling site, jurisdiction, population per capita served by jurisdiction, and spatial distribution. Conclusion: The methodology used allowed for the analysis and visualization of SARS-CoV-2 infection data by jurisdiction, which the municipality can use to observe trends and generate strategies.

Clinical efficacy of radical resection of pancreatic cancer after neoadjuvant conversion therapy / 中华消化外科杂志

Objective:To investigate the clinical efficacy of radical resection of pancreatic cancer after neoadjuvant conversion therapy.Methods:The retrospective and descriptive study was conducted. The clinicopathological data of 23 patients who underwent radical resection of pancreatic cancer after neoadjuvant conversion therapy in Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School from January 2019 to May 2022 were collected. There were 17 males and 6 females, aged 58(range, 33-73)years. After neoadjuvant conversion therapy, the three-dimensional (3D) visualization was used to evaluate and classify tumor vascular invasion, and surgical plan was planned and implemented. Observation indicators: (1) situations of neoadjuvant conversion therapy; (2) surgical situations; (3) postoperative histopathological examination; (4) postoperative recovery; (5) follow-up. Measurement data with normal distribution were represen-ted as Mean± SD, and measurement data with skewed distribution were represented as M(range) or M( Q1, Q3). Count data were described as absolute numbers. Results:(1) Situations of neoadjuvant conversion therapy. All 23 patients received the AG combination chemotherapy (albumin-paclitaxel+gemcitabine), including 14 patients combined with stereotactic body radiation therapy. Of the 23 patients, 22 cases achieved partial response, and 1 case showed stable disease. The CA19-9 of the 23 patients was 85.06(29.74,634.5)U/mL and 13.96(9.74,25.02)U/mL before and after neoadjuvant conversion therapy, respectively. (2) Surgical situations. According to the results of preoperative 3D visualization of tumor vascular invasion, 7 of the 23 patients were evaluated as arterial invasion, 8 cases were evaluated as venous invasion, 5 cases were evaluated as arterial and venous invasion, and there were 3 cases showing negative of vascular invasion. Of the 23 patients, 12 cases underwent pancreaticoduodenectomy, 4 cases underwent radical antegrade modular pancreatosplenectomy, 7 cases underwent total pancreaticoduodenectomy. For vascular reconstruction, there were 10 patients without vascular reconstruction, and there were 13 patients undergoing artificial vascular vein reconstruction. The operation time and volume of intraoperative blood loss of the 23 patients was (524±171)minutes and 1 000(400,1 600)mL, respectively. (3) Postoperative histopathological exami-nation. Results of postoperative histopathological examination in 23 patients showed that there were 2 cases with moderate-well differentiated tumor, 10 cases with moderate differentiated tumor, 7 cases with moderate-poorly differentiated tumor, 2 cases with poorly differentiated tumor, and 2 cases negative of tumor. The number of lymph node dissected in 23 patients was 16±7. There were 5 cases with lymph node metastasis and 18 cases without lymph node metastasis. There were 17 cases with nerve invasion and 6 cases without nerve invasion. All 23 patients were negative of vascular invasion. Of the 23 patients, there were 21 cases with R 0 resection and 2 cases with R 1 resection. For pathological TNM staging, there were 2 cases with 0 stage, 13 cases with Ⅰ stage, 7 cases with Ⅱ stage, and 1 case with Ⅳ stage. For postoperative pathological scoring, there were 2 cases achieved 0 point (complete pathological remission), 16 cases achieved 2 points (partial remission), and 5 cases achieved 3 points (no significant effect). (4) Postoperative recovery. The postoperative duration of hospital stay of 23 patients was 19(14,31)days. There were 17 of 23 patients underwent postoperative complications, including 11 cases with Clavien-Dindo Ⅱ stage complications, 3 cases with Clavien-Dindo Ⅲa stage complications, 1 case with Clavien-Dindo Ⅲb stage complication, 1 case with Clavien-Dindo Ⅳ stage complication, and 1 case with Clavien-Dindo Ⅴ stage complica-tion. (5) Follow-up. There were 22 patients underwent follow-up, with follow-up time as 12(9,23)months. There were 9 patients underwent postoperative recurrence and metastasis, with recurrence and metastasis time as 7.8(range, 6.0-12.0)months. During the follow-up, 15 of the 22 patients survived. Conclusion:Radical resection of pancreatic cancer after neoadjuvant conversion therapy is feasible.

Exploration and perspective of paradigm and technical system of precise and intelligent minimally invasive surgery for gastric cancer / 中华消化外科杂志

As precision and intelligent medicine takeing hold, the concept of minimally invasive surgery for gastric cancer has evolved from simply pursuing the effect of surgical results to being more patient-centered, safer, less trauma, more efficient, and more in line with the spirit of the evidence-based decision-making comprehensive treatment model. The authors review the develop-ment and technical innovation of precise and intelligent surgery in recent years, and proposes the expanding direction of new paradigm of precise and intelligent minimally invasive surgery for gastric cancer based on the work and achievements of team work. It is believed that in the future, advances in artificial intelligence, fluorescence imaging, surgical navigation, optical biopsy and other technolo-gies will bring new vitality to minimally invasive surgery for gastric cancer.

Visualization analysis of bibliometrics for clinical researches on Wumei pill based on CiteSpace / 国际中医中药杂志

Objective:To summarize the clinical researches of Wumei Pill and provide reference for clinical application and follow-up research.Methods:The databases CNKI, VIP, Wanfang, CBM, PubMed, Embase were retrieved from the inception to June 30,2022. CiteSpace 6.1.R3 software was used to analyze the research hotspots and keywords in the literature. Using EndNote X9 software and Microsoft Office Excel 2013, we recorded and analyzed the published year, literature type, affiliated journal, disease treated, TCM syndrome type, single drug dose and treatment duration of the included articles.Results:212 articles were included. Diarrhea, gastritis, diabetes, insomnia were the research hotspots. The types of diseases treated by Wumei Pill mainly include digestive system, endocrine system and tumor, mainly for cold-heat syndrome and Jueyin syndrome. The average dosage of Mume Fructus was the largest, 21 g. The average treatment time was 5.78 weeks. Conclusion:At present, the overall clinical research of Wumei pill shows an increasing tendency, mainly involving gastrointestinal disease.

Analysis on knowledge mapping of edema treated with TCM: a bibliometrics based quantitative study / 国际中医中药杂志

Objective:Applying bibliometrics to analyze the research history, hotspots and trends of Traditional Chinese Medicine (TCM) interventions in edema-related diseases, and to provide reference for the revision of diagnostic and therapeutic criteria for edema in TCM.Methods:The literature about edema treated with TCM was retrieved from CNKI, Wanfang, VIP, CBM from 1 st. Jan 1995 to 25 th. May 2022. CiteSpace and VOSviewer softwares were used to draw the knowledge map, and analyze the co-occurrence relationship and clustering characteristics of the institution, author, keywords and mechanism hotspots. Results:Totally 3 198 articles were included. The annual number of documents issued generally shows a spiral rise trend. Liaoning University of Chinese Medicine published the most articles. Core authors published the most articles were Sun Wei (13 articles); the team with the highest cooperation intensity was Yang Hongtao's team; keywords formed 7 clusters. Hotspot mechanisms included metabolic disorders, immune balance, anti-inflammation, calcium and phosphorus metabolism. Keywords in the past 7 years were membranous nephropathy, chronic heart failure, diabetes, lymphedema etc.Conclusions:The attention paid to the intervention of TCM in the field of edema is generally on the rise, and has decreased in the past two years. The research categories focus on the experience of famous doctors, clinical trials, and mechanistic studies, and nephropathy-related edema has been the focus of research; diabetic nephropathy, chronic heart failure, metabolomics, and immunotherapy are expected to be the focus of attention in the next stage.

A semi-supervised network-based tissue-aware contrast enhancement method for CT images / 南方医科大学学报

OBJECTIVE@#To propose a tissue- aware contrast enhancement network (T- ACEnet) for CT image enhancement and validate its accuracy in CT image organ segmentation tasks.@*METHODS@#The original CT images were mapped to generate low dynamic grayscale images with lung and soft tissue window contrasts, and the supervised sub-network learned to recognize the optimal window width and level setting of the lung and abdominal soft tissues via the lung mask. The self-supervised sub-network then used the extreme value suppression loss function to preserve more organ edge structure information. The images generated by the T-ACEnet were fed into the segmentation network to segment multiple abdominal organs.@*RESULTS@#The images obtained by T-ACEnet were capable of providing more window setting information in a single image, which allowed the physicians to conduct preliminary screening of the lesions. Compared with the suboptimal methods, T-ACE images achieved improvements by 0.51, 0.26, 0.10, and 14.14 in SSIM, QABF, VIFF, and PSNR metrics, respectively, with a reduced MSE by an order of magnitude. When T-ACE images were used as input for segmentation networks, the organ segmentation accuracy could be effectively improved without changing the model as compared with the original CT images. All the 5 segmentation quantitative indices were improved, with the maximum improvement of 4.16%.@*CONCLUSION@#The T-ACEnet can perceptually improve the contrast of organ tissues and provide more comprehensive and continuous diagnostic information, and the T-ACE images generated using this method can significantly improve the performance of organ segmentation tasks.

CiteSpace-based visualization analysis of domestic and foreign researches on post-traumatic stress disorder in recent five years / 四川精神卫生

ObjectiveTo understand the research status of post-traumatic stress disorder （PTSD） at home and abroad in recent five years， and to grasp the research frontiers and hot spots in this field. MethodsTwo electronic databases， Web of Science and China National Knowledge Infrastructure （CNKI）， were retrieved for the literature published from January 1， 2017 to December 31， 2021. A total of 8 505 literatures were included， then the visualization analysis of the number of publications， authors， countries， institutions and keywords was conducted based on Microsoft Excel and CiteSpace software. Results① The number of publications in domestic and foreign showed an increasing trend in recent five years. ② In foreign literature， the top five countries in terms of the number of publications were the United States， the United Kingdom， China， Australia and Canada， with Canada having the highest centrality （0.18）. ③ Both domestic and foreign research institutions were dominated by universities. ④ In terms of the number of articles published， the top three foreign scholars were Bryant RA， Ressler KJ and Greenberg N， and the top three Chinese scholars were Wu Xinchun， Li Yuefeng， Yan Xingke and Zhang Guiqing （tied for the third place）. Compared with foreign authors， the number of articles published by Chinese scholars was relatively small. ⑤ In terms of research keywords， PTSD and depression were of more concern in both domestic and foreign. ConclusionIn recent five years， PTSD has been a hot topic at home and abroad， with both domestic and international studies focusing on PTSD and depression， and strengthening international exchanges may help promote progress in the field of PTSD research.

Characteristics of new corneal biomechanical parameters in different degrees of myopia / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To study the characteristics of new corneal biomechanical parameters in different degrees of myopia and analyze the correlation of the new parameter stress-strain index(SSI).METHODS: A cross-sectional study was conducted on 366 adult patients(718 eyes)with different degrees of myopia who received treatment at the First Affiliated Hospital of Dali University from October 2021 to November 2021, aged 18-50 years, and the spherical equivalent(SE)was -0.50～-16.75D. The axial length(AL)of the eye was measured by IOL master, and the new corneal biomechanical parameters, central corneal thickness(CCT)and intraocular pressure(IOP)were measured by corneal visualization Scheimpflug technology(Corvis ST). The subjects were categorized into low myopia, moderate myopia and high myopia groups according to SE. The data were analyzed by ANOVA and Pearson correlation.RESULTS: The ratio of the thinnest corneal thickness to horizontal thickness change rate(ARTh)and SSI were statistically significant(P&#x0026;#x003C;0.001), while the remaining parameters were not statistically significant(P&#x0026;#x003E;0.05). SSI was positively correlated with age(r=0.102, P=0.006), SE(r=0.361, P&#x0026;#x003C;0.001), IOP(r=0.175, P&#x0026;#x003C;0.001), CCT(r=0.098, P=0.009), SPA1(r=0.182, P&#x0026;#x003C;0.001), negatively correlated with AL(r=-0.331, P&#x0026;#x003C;0.001), IR(r=-0.545, P&#x0026;#x003C;0.001)and had no correlation with other corneal biomechanical parameters(P&#x0026;#x003E;0.05).CONCLUSION: With the increase of myopia degree and the elongation of the axial length, the SSI value becomes smaller and the corneal hardness decreases. SSI may be a helpful corneal biomechanical indicator for future research on myopia.

A bibliometric and visualization analysis of stem cell therapies for periodontal tissue engineering / 口腔疾病防治

Objective@# To analyze the current status, hotspots, and trends in the field of stem cell therapies for periodontal tissue engineering based on bibliometric analysis.@*Methods @# The literature on stem cell therapies for periodontal tissue engineering in animal experiments and clinical studies was searched in the Web of Science core database up to December 31, 2021. The bibliometric analysis of the relevant literature data was carried out by using the "Bibliometrix" package of R language.@*Results @#A total of 304 articles were included, and the number of publications and the citation frequency are increasing. The number of related studies from China ranks first in the world with 166 publications; the institution with the largest number of publications is the Fourth Military Medical University; the author with the largest number of publications is Jin Y; and Tissue Engineering Part A had the most related publications. The hotspots of stem cell therapies for periodontal tissue engineering are mainly focused on tissue engineering and periodontal ligament regeneration, while the frontiers are mainly focused on exosomes, gold nanoparticles, and angiogenesis. @*Conclusion@#Research on stem cell therapies for periodontal tissue engineering continues to expand, and the academic influence is gradually increasing. Future research directions should focus on periodontal ligament regeneration, exosomes, gold nanoparticles and angiogenesis.

Influencing Factors and Prediction Model of Performance of Needle Visualization in Fine Needle Aspiration of Thyroid Nodules / 中国医学科学院学报

Objective To investigate the influencing factors and establish a model predicting the performance of needle visualization in fine-needle aspiration (FNA) of thyroid nodules. Methods This study prospectively included 175 patients who underwent FNA of thyroid nodules in the Department of Ultrasound in China-Japan Friendship Hospital and compared the display of the needle tips in the examination of 199 thyroid nodules before and after the application of needle visualization.We recorded the location,the positional relationship with thyroid capsule,ultrasonic characteristics,and the distribution of the soft tissue strip structure at the puncture site of the nodules with unclear needle tips display before using needle visualization.Furthermore,according to the thyroid imaging reporting and data system proposed by the American College of Radiology,we graded the risk of the nodules.Lasso-Logistic regression was employed to screen out the factors influencing the performance of needle visualization and establish a nomogram for prediction. Results The needle tips were not clearly displayed in the examination of 135 (67.8%) and 53 (26.6%) nodules before and after the application of needle visualization,respectively,which showed a significant difference (P<0.001).Based on the positional relationship between the nodule and capsule,anteroposterior/transverse diameter (A/T) ratio,blood supply,and the distribution of subcutaneous strip structure at the puncture site,a nomogram was established to predict the probability of unclear display of the needle tips after application of needle visualization.The C-index of the prediction model was 0.75 (95%CI=0.67-0.84) and the area under the receiver operating characteristic curve was 0.72.The calibration curve confirmed the appreciable reliability of the prediction model,with the C-index of 0.70 in internal validation. Conclusions Needle visualization can improve the display of the needle tip in ultrasound-guided FNA of thyroid nodules.The nomogram established based on ultrasound features such as the positional relationship between the nodule and capsule,A/T ratio,blood supply,and the distribution of subcutaneous strip structure at the puncture site can predict whether needle visualization is suitable for the examination of nodules.

Functional analysis of functional membrane microdomains in the biosynthesis of menaquinone-7 / 生物工程学报

Functional membrane microdomains (FMMs) that are mainly composed of scaffold proteins and polyisoprenoids play important roles in diverse cellular physiological processes in bacteria. The aim of this study was to identify the correlation between MK-7 and FMMs and then regulate the MK-7 biosynthesis through FMMs. Firstly, the relationship between FMMs and MK-7 on the cell membrane was determined by fluorescent labeling. Secondly, we demonstrated that MK-7 is a key polyisoprenoid component of FMMs by analyzing the changes in the content of MK-7 on cell membrane and the changes in the membrane order before and after destroying the integrity of FMMs. Subsequently, the subcellular localization of some key enzymes in MK-7 synthesis was explored by visual analysis, and the intracellular free pathway enzymes Fni, IspA, HepT and YuxO were localized to FMMs through FloA to achieve the compartmentalization of MK-7 synthesis pathway. Finally, a high MK-7 production strain BS3AT was successfully obtained. The production of MK-7 reached 300.3 mg/L in shake flask and 464.2 mg/L in 3 L fermenter.

ETCM v2.0: An update with comprehensive resource and rich annotations for traditional Chinese medicine

Existing traditional Chinese medicine (TCM)-related databases are still insufficient in data standardization, integrity and precision, and need to be updated urgently. Herein, an Encyclopedia of Traditional Chinese Medicine version 2.0 (ETCM v2.0, http://www.tcmip.cn/ETCM2/front/#/) was constructed as the latest curated database hosting 48,442 TCM formulas recorded by ancient Chinese medical books, 9872 Chinese patent drugs, 2079 Chinese medicinal materials and 38,298 ingredients. To facilitate the mechanistic research and new drug discovery, we improved the target identification method based on a two-dimensional ligand similarity search module, which provides the confirmed and/or potential targets of each ingredient, as well as their binding activities. Importantly, five TCM formulas/Chinese patent drugs/herbs/ingredients with the highest Jaccard similarity scores to the submitted drugs are offered in ETCM v2.0, which may be of significance to identify prescriptions/herbs/ingredients with similar clinical efficacy, to summarize the rules of prescription use, and to find alternative drugs for endangered Chinese medicinal materials. Moreover, ETCM v2.0 provides an enhanced JavaScript-based network visualization tool for creating, modifying and exploring multi-scale biological networks. ETCM v2.0 may be a major data warehouse for the quality marker identification of TCMs, the TCM-derived drug discovery and repurposing, and the pharmacological mechanism investigation of TCMs against various human diseases.

CiteSpace knowledge map of research status and trends of Croci Stigma / 中国中药杂志

This study retrieved Croci Stigma related literature from CNKI, Wanfang, VIP, and Web of Science database, and used bibliometrics and CiteSpace 6.1.R2 software to analyze the published Croci Stigma related articles in Chinese and English from 2000 to 2022. The authors, research institutions, and keywords were visualized and analyzed, and the current status and development trend of Croci Stigma research was summarized by combining the information extraction methods. A total of 1 846 Chinese articles and 2 703 English articles were screened out and included. The results showed a generally steady increase in the number of Croci Stigma related articles. The results of the visualization analysis showed that there were more collaborations between researcher teams and major research institutions in English articles than Chinese articles. The Chinese articles was mainly published by China Pharmaceutical University, and most of the inter-institutional collaborations occurred in neighboring regions. The English articles was mainly published by Iranian institutions, and most of the cooperation occurred within the country, with less transnational cooperation. Keywords analysis showed that the research on Croci Stigma was mainly focused on chemical compositions, pharmacological effects, mechanisms, quality control, etc. It was predicted that the future research hotspots of Croci Stigma would mainly focus on pharmacological mechanism and clinical efficacy. The current research related to Croci Stigma still needs to be developed, cooperation should be strengthened, and more in-depth research should be conducted.

Application and research progress of ultrasound in acupuncture treatment / 中国针灸

The operation standardization, quantitative standard and safety of acupuncture treatment are important links in the development of acupuncture modernization. In recent years, with the continuous development of ultrasonic imaging technology, ultrasonic medicine has the characteristics of visualization, quantitative analysis and real-time dynamics, which could play a unique role in acupuncture treatment. In this paper, the research progress of the combined application of ultrasonic medicine and acupuncture treatment is described from three aspects: ultrasound guidance helping to standardize acupuncture operation, ultrasound guidance helping to improve and evaluate the clinical efficacy of acupuncture, and ultrasound guidance helping to improve the safety of acupuncture, aiming to providing new ideas for the application of modern medicine in traditional medicine.

Visual analysis of clinical comprehensive evaluation of drugs in China by bibliometric analysis / 药学实践杂志

Objective To analyze the research status and predict the development trend of clinical comprehensive evaluation of drugs in China, and to provide reference for clinical comprehensive evaluation. Methods CNKI, Wanfang and VIP database were used to search the published articles of clinical comprehensive evaluation. Literature searching was set from the building time of the database to 2022, the basic information about the published articles was obtained for the evaluation of the literature quality. Bibliometrics and CiteSpace 6.1.R3 software were used to visualize the research authors, research institutions, and key words. Results After data screening, a total of 126 Chinese published articles were selected. The analysis showed that the numbers of published articles were rising continuously, and China Academy of Chinese Medical Sciences and Xie Yanming were the institute and the author with the maximum number of literatures, respectively. Conclusion The clinical comprehensive evaluation of drugs was conducted based on the clinical value of drugs, guided by the policy requirements. It is suggested that researchers should conduct the comprehensive evaluation according to the focus and requirements of government agencies, the pharmaceutical industry and the clinical applications.

Needle visualization during ultrasound-guided puncture: image optimization / Visualização da agulha durante punção guiada por ultrassom: otimização de imagem

Abstract Background Obtaining an adequate image of the needle by ultrasound reduces complications resulting from punctures, increasing patient safety and reducing hospitalization costs. Objectives To verify human perception in relation to number of pixels, while also identifying the best puncture angle and which needle should be used, and to evaluate whether there is a difference if needle visualization software is used. Methods 20 images were analyzed by 103 students who classified them as being sufficient or insufficient and were compared with the quality observed using photoshop. We evaluated whether there were differences between puncture angles of less than 45º and more than 45º, between IV catheter and introducer needles, and between images obtained with and without visualization software. Results There was a higher percentage of sufficient ratings for images those that had more than 60 pixels and when the puncture angle was less than 45º, with significant associations between students' evaluations and each of these groups (p < 0.001). The percentages of images classified as sufficient were higher for images in which a IV catheter was used and also higher for those using the needle visualization software, with significant associations between the results for students' classifications and each of these groups (p < 0.001). Conclusions The human eye classifies an image as sufficient according to higher numbers of pixels. Images of punctures at angles smaller than 45º in relation to the surface, of punctures performed with a IV catheter, and when using specific visualization software are also better detected by the human eye.

Resumo Contexto A obtenção de uma imagem adequada da agulha pelo ultrassom diminui complicações decorrentes de punções, trazendo segurança para os pacientes e diminuindo custos com hospitalização. Objetivos Verificar a percepção do olho humano em relação aos pixels, identificar qual o melhor ângulo da punção e qual agulha deve ser utilizada e avaliar se há diferença com o uso de software de visualização de agulha. Métodos Vinte imagens foram analisadas por 103 alunos, que as classificaram como sendo suficientes ou insuficientes, e comparadas com a qualidade observada pelo photoshop. Avaliou-se se havia diferença entre punções com menos de 45º e mais de 45º, entre cateter EV e agulha introdutora e entre imagens obtidas com e sem software de visualização. Resultados Houve um percentual mais elevado de imagens suficientes entre aquelas que tinham mais de 60 pixels e quando o ângulo era menor que 45º, com associação significativa entre a classificação das avaliações pelos alunos e cada um desses grupos (p < 0,001). O percentual de imagens suficientes foi maior nas imagens realizadas com cateter EV e naquelas que utilizaram o software de visualização da agulha, ocorrendo associação significativa entre os resultados da classificação pelos alunos e cada um desses grupos (p < 0,001). Conclusões O olho humano classifica a imagem como sendo suficiente de acordo com a maior quantidade de pixels. Imagens puncionadas com ângulos menores que 45º em relação à superfície, realizadas com cateter EV e utilizando software específico de visualização também são mais bem detectadas pelo olho humano.