1.Practice of clinical pharmacist participating in the treatment of a case of mixed shock caused by severe scrub typhus
Xiaoyan HUANG ; Jingwen XIE ; Yanzhe XIA ; Jia LI
China Pharmacy 2025;36(5):600-605
OBJECTIVE To provide valuable insights for the adjustment of anti-infectious regimens, identification of adverse reactions, and individualized pharmaceutical care in patients with critically severe scrub typhus. METHODS Clinical pharmacists actively participated in the pharmaceutical care process for a patient with severe scrub typhus leading to mixed shock undergoing continuous renal replacement therapy and extracorporeal membrane oxygenation. Initially, the patient received meropenem (1 g, q12 h, ivdrip), in combination with doxycycline (0.1 g, q12 h, po), which was later switched to meropenem (1 g, q8 h, ivdrip) along with omacycline (100 mg, qd, ivdrip) due to impaired gastrointestinal function. However, as the patient’s condition progressively deteriorated and the infection became uncontrolled, the clinical pharmacists recommended that the clinicians adjust the anti-infective regimen to meropenem (2 g, q8 h, ivdrip) combined with tigecycline (100 mg for first dose; 50 mg, q12 h for maintenance; ivdrip). The clinicians followed the advice of the clinical pharmacists. After treatment, the patient’s symptoms exhibited significant improvement, accompanied by a notable decrease in inflammatory markers, indicating that the infection had been successfully controlled. However, due to continuously increasing bilirubin levels, in order to reduce the risk of drug-induced liver injury, the clinicians changed tigecycline to azithromycin (0.5 g, qd, ivdrip) following the recommendation of the clinical pharmacists. RESULTS Ultimately, metagenomic next-generation sequencing of the bronchoalveolar lavage fluid and blood specimens indicated that Orientia tsutsugamushi had been completely eradicated in the patient. CONCLUSIONS Tigecycline may be a viable therapeutic choice for patients with severe scrub typhus. In the context of critically ill patients with scrub typhus, combining tigecycline with azithromycin might potentially enhance the efficacy in eliminating Orientia tsutsugamushi.
2.Diagnosis of an Outbreak of Canine Distemper in Cynomolgus Monkeys in an Experimental Monkey Farm in 2019
Chenjuan WANG ; Lingyan YANG ; Lipeng WANG ; Xueping SUN ; Jingwen LI ; Lianxiang GUO ; Rong RONG ; Changjun SHI
Laboratory Animal and Comparative Medicine 2025;45(3):360-367
Objective To report the diagnosis of a canine distemper virus outbreak among a colony of cynomolgus monkeys at an experimental monkey farm in 2019. MethodsA total of 46 samples were collected from 21 diseased cynomolgus monkeys (exhibiting symptoms such as facial rash, skin scurf, runny nose, and diarrhea) and from one deceased monkey at an experimental monkey breeding farm in South China in late 2019, including serum, skin rash swabs, and anticoagulated whole blood, liver, lung, and skin tissues were submitted for testing. All submitted samples were tested for canine distemper virus gene fragments using real-time quantitative PCR, while immunohistochemical staining was performed to detect canine distemper virus nucleoprotein in lung tissues. The skin tissue of the deceased monkey was ground and sieved. The filtrate was inoculated into a monolayer MDCK cell line for virus isolation. Then, whole-genome sequencing was performed to identify the isolated virus. The Clustal Omega tool was used to align and analyze the homology of different Asian canine distemper virus isolates. A phylogenetic tree was constructed, followed by genetic evolutionary analysis. ResultsClinical retrospective analysis revealed that the diseased cynomolgus monkeys exhibited symptoms similar to those observed in cynomolgus monkeys infected with measles virus. Necropsy findings showed red lesions in the lungs and significant hemorrhage in the colonic mucosa. Real-time quantitative PCR detected canine distemper virus nucleic acid in the serum, skin rash swabs of the infected monkeys, and various tissue samples of the deceased monkey, all of which tested positive. Calculation based on the standard curve formula indicated the viral load was highest in the skin tissue. Immunohistochemical staining of the deceased monkey's lung tissue demonstrated aggregation of CDV nucleoprotein in alveolar epithelial cells, bronchi, and bronchioles. A CDV strain was isolated from the skin tissue of the deceased monkey. Phylogenetic analysis indicated that this strain shares the closest relationship (98.86%) with the Asian-1 type canine distemper virus strain CDV/dog/HCM/33/140816, previously identified in dogs in Vietnam. ConclusionBased on comprehensive analysis of clinical symptoms, nucleic acid detection, viral protein immunohistochemistry, and whole-genome sequencing results, the diagnosis confirms that the cynomolgus monkeys in this facility are infected with canine distemper virus. It is recommended to include canine distemper virus as a routine surveillance target in captive monkey populations. Additionally, this study provides a foundation for further research on the molecular biological characteristics of canine distemper virus.
3.Diagnosis of an Outbreak of Canine Distemper in Cynomolgus Monkeys in an Experimental Monkey Farm in 2019
Chenjuan WANG ; Lingyan YANG ; Lipeng WANG ; Xueping SUN ; Jingwen LI ; Lianxiang GUO ; Rong RONG ; Changjun SHI
Laboratory Animal and Comparative Medicine 2025;45(3):360-367
Objective To report the diagnosis of a canine distemper virus outbreak among a colony of cynomolgus monkeys at an experimental monkey farm in 2019. MethodsA total of 46 samples were collected from 21 diseased cynomolgus monkeys (exhibiting symptoms such as facial rash, skin scurf, runny nose, and diarrhea) and from one deceased monkey at an experimental monkey breeding farm in South China in late 2019, including serum, skin rash swabs, and anticoagulated whole blood, liver, lung, and skin tissues were submitted for testing. All submitted samples were tested for canine distemper virus gene fragments using real-time quantitative PCR, while immunohistochemical staining was performed to detect canine distemper virus nucleoprotein in lung tissues. The skin tissue of the deceased monkey was ground and sieved. The filtrate was inoculated into a monolayer MDCK cell line for virus isolation. Then, whole-genome sequencing was performed to identify the isolated virus. The Clustal Omega tool was used to align and analyze the homology of different Asian canine distemper virus isolates. A phylogenetic tree was constructed, followed by genetic evolutionary analysis. ResultsClinical retrospective analysis revealed that the diseased cynomolgus monkeys exhibited symptoms similar to those observed in cynomolgus monkeys infected with measles virus. Necropsy findings showed red lesions in the lungs and significant hemorrhage in the colonic mucosa. Real-time quantitative PCR detected canine distemper virus nucleic acid in the serum, skin rash swabs of the infected monkeys, and various tissue samples of the deceased monkey, all of which tested positive. Calculation based on the standard curve formula indicated the viral load was highest in the skin tissue. Immunohistochemical staining of the deceased monkey's lung tissue demonstrated aggregation of CDV nucleoprotein in alveolar epithelial cells, bronchi, and bronchioles. A CDV strain was isolated from the skin tissue of the deceased monkey. Phylogenetic analysis indicated that this strain shares the closest relationship (98.86%) with the Asian-1 type canine distemper virus strain CDV/dog/HCM/33/140816, previously identified in dogs in Vietnam. ConclusionBased on comprehensive analysis of clinical symptoms, nucleic acid detection, viral protein immunohistochemistry, and whole-genome sequencing results, the diagnosis confirms that the cynomolgus monkeys in this facility are infected with canine distemper virus. It is recommended to include canine distemper virus as a routine surveillance target in captive monkey populations. Additionally, this study provides a foundation for further research on the molecular biological characteristics of canine distemper virus.
4.Analysis of factors influencing the trough concentration of voriconazole and adverse drug reactions in renal transplant patients
Xiuman SUN ; Caifang ZENG ; Zhongbin DENG ; Lijuan SHI ; Yuying SHI ; Jingwen CHEN ; Jiabin YANG
China Pharmacy 2025;36(18):2301-2306
OBJECTIVE To analyze the influencing factors of voriconazole trough concentration and adverse drug reactions (ADR) in renal transplant recipients. METHODS Data from inpatients who received voriconazole and therapeutic drug monitoring in our hospital between January 2022 and August 2023 were retrospectively analyzed. Patients were divided into renal transplant group and non-renal transplant group based on transplantation status. A 1∶1 propensity score matching (PSM) method was used to balance differences in baselines between the two groups. Voriconazole trough concentrations, target attainment rate, clinical efficacy, and ADR were compared between the two groups. Multiple linear regression (backward) was used to analyze the factors influencing voriconazole trough concentrations in the renal transplant group. Univariate analysis and binary Logistic regression were used to identify independent risk factors for ADR in the renal transplant group. RESULTS After PSM, 48 patients were included in each group. There were no statistically significant differences in the mean voriconazole trough concentration, target attainment rate or efficacy rate between the two groups (P>0.05). The total incidence of ADR was significantly higher in the renal transplant group than in the non-renal transplant group (P<0.05). Multiple linear regression analysis showed that age, average daily dose, pulmonary infection, total bilirubin during medication, day-1 loading dose, use of the original drug, concomitant immunosuppressant use, and the occurrence of ADR were factors influencing voriconazole trough concentration in renal transplant patients (P<0.05). Binary Logistic regression analysis showed that abnormal direct bilirubin during medication [OR=7.747, 95%CI (1.334, 45.005), P=0.023] was an independent risk factor for ADR in renal transplant patients receiving voriconazole. CONCLUSIONS Age, average daily dose, pulmonary infection, use of the original drug, day-1 loading dose, total bilirubin during medication, concomitant immunosuppressant use, and the occurrence of ADR are the factors influencing voriconazole trough concentration in renal transplant patients. Furthermore, patients with abnormal direct bilirubin during medication are more susceptible to ADR.
5.Meteorological factor-driven prediction of high-use days of budesonide: construction and comparison of ensemble learning models
Qitao CHEN ; Yue ZHOU ; Xiaojun ZHANG ; Jingwen NI ; Guoqiang SUN ; Fenfei GAO ; Lizhen XIA ; Zihao LI
China Pharmacy 2025;36(21):2723-2726
OBJECTIVE To construct ensemble learning models for predicting high-use days of budesonide based on meteorological factors, thereby providing reference for hospital pharmacy management. METHODS Meteorological data for 2024 and outpatient budesonide usage data from the jurisdiction of Sanming Hospital of Integrated Traditional Chinese and Western Medicine were collected. High-use days were defined as the 75th percentile of outpatient budesonide usage, and a corresponding dataset was established. The prediction task was formulated as a classification problem, and three ensemble learning models were developed: Random Forest, Extreme Gradient Boosting (XGBoost), and Histogram-based Gradient Boosting Classifier. Model performance was evaluated using accuracy, precision, recall, F1-score, and log-loss. Model interpretability was analyzed using Shapley Additive Explanations (SHAP). RESULTS The Histogram-based Gradient Boosting Classifier achieved the best performance (accuracy=0.75, F1-score=0.48), followed by XGBoost (accuracy=0.74, F1-score=0.43) and Random Forest (accuracy=0.72, F1-score=0.22). SHAP results suggested that the prediction results of the last two models have the highest correction. CONCLUSIONS Ensemble learning models can effectively predict high-use days of budesonide, with the Histogram- based Gradient Boosting Classifier demonstrating the best predictive performance. Low temperature, high humidity, and low atmospheric pressure show significant positive impacts on the prediction of daily budesonide usage.
6.An interpretable machine learning modeling method for the effect of manual acupuncture manipulations on subcutaneous muscle tissue.
Wenqi ZHANG ; Yanan ZHANG ; Yan SHEN ; Chun SUN ; Jie CHEN ; Yuhe WEI ; Jian KANG ; Ziyi CHEN ; Jingqi YANG ; Jingwen YANG ; Chong SU
Chinese Acupuncture & Moxibustion 2025;45(10):1371-1382
OBJECTIVE:
To investigate the effect of manual acupuncture manipulations (MAMs) on subcutaneous muscle tissue, by developing quantitative models of "lifting and thrusting" and "twisting and rotating", based on machine learning techniques.
METHODS:
A depth camera was used to capture the acupuncture operator's hand movements during "lifting and thrusting" and "twisting and rotating" of needle. Simultaneously, the ultrasound imaging was employed to record the muscle tissue responses of the participants. Amplitude and angular features were extracted from the movement data of operators, and muscle fascicle slope features were derived from the data of ultrasound images. The dynamic time warping barycenter averaging algorithm was adopted to align the dual-source data. Various machine learning techniques were applied to build quantitative models, and the performance of each model was compared. The most optimal model was further analyzed for its interpretability.
RESULTS:
Among the quantitative models built for the two types of MAMs, the random forest model demonstrated the best performance. For the quantitative model of the "lifting and thrusting" technique, the coefficient of determination (R2) was 0.825. For the "twisting and rotating" technique, R2 reached 0.872.
CONCLUSION
Machine learning can be used to effectively develop the models and quantify the effects of MAMs on subcutaneous muscle tissue. It provides a new perspective to understand the mechanism of acupuncture therapy and lays a foundation for optimizing acupuncture technology and designing personalized treatment regimen in the future.
Humans
;
Acupuncture Therapy/methods*
;
Machine Learning
;
Male
;
Adult
;
Female
;
Subcutaneous Tissue/diagnostic imaging*
;
Young Adult
7.Small bowel video keyframe retrieval based on multi-modal contrastive learning.
Xing WU ; Guoyin YANG ; Jingwen LI ; Jian ZHANG ; Qun SUN ; Xianhua HAN ; Quan QIAN ; Yanwei CHEN
Journal of Biomedical Engineering 2025;42(2):334-342
Retrieving keyframes most relevant to text from small intestine videos with given labels can efficiently and accurately locate pathological regions. However, training directly on raw video data is extremely slow, while learning visual representations from image-text datasets leads to computational inconsistency. To tackle this challenge, a small bowel video keyframe retrieval based on multi-modal contrastive learning (KRCL) is proposed. This framework fully utilizes textual information from video category labels to learn video features closely related to text, while modeling temporal information within a pretrained image-text model. It transfers knowledge learned from image-text multimodal models to the video domain, enabling interaction among medical videos, images, and text data. Experimental results on the hyper-spectral and Kvasir dataset for gastrointestinal disease detection (Hyper-Kvasir) and the Microsoft Research video-to-text (MSR-VTT) retrieval dataset demonstrate the effectiveness and robustness of KRCL, with the proposed method achieving state-of-the-art performance across nearly all evaluation metrics.
Humans
;
Video Recording
;
Intestine, Small/diagnostic imaging*
;
Machine Learning
;
Image Processing, Computer-Assisted/methods*
;
Algorithms
8.Comprehensive Comparative Analysis of Sepsis Animal Models and Characteristics of Clinical Syndromes in Integrated Traditional Chinese and Western Medicine
Shan LI ; Chao LI ; Yiwen WU ; Jingwen XUE ; Qingqing CHEN ; Tengxiao LIANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(20):212-218
This study, anchored in the traditional Chinese medicine (TCM) syndrome differentiation and treatment principles alongside the clinical characteristics of sepsis in Western medicine, extensively gathers and meticulously dissects the latest research findings on sepsis animal models from both Chinese and international sources. Adhering strictly to TCM syndrome diagnostic criteria for sepsis, the study conducts a thorough evaluation of various animal models across multiple dimensions, including clinical manifestations, pathological changes, and biomarker expressions, so as to reflect the degree of resemblance these models have to human sepsis TCM syndromes. The results reveal that the colon stent implantation model exhibits a higher degree of congruence with both TCM and Western medicine standards, particularly aligning with the diagnosis of the "Fu-Qi obstruction syndrome". Conversely, the extraperitoneal sepsis model shows a higher degree of congruence with TCM, fitting more closely with the diagnosis of "acute deficiency syndrome" and emphasizing the core pathogenesis of Qi deficiency in sepsis. These findings not only augment the diversity of sepsis animal models but also highlight the necessity and potential of integrated TCM and western medicine research. Current sepsis animal models predominantly focus on western pathophysiological mechanisms, with limited direct incorporation of TCM syndrome differentiation elements. This underscores the need, in future study designs, to actively explore integrating TCM syndrome classification and intervention principles into model development. This could be achieved by manipulating model-inducing factors and observing more TCM-specific symptoms and signs among other strategies, so as to establish sepsis models that more closely resemble clinical reality and incorporate both TCM and western medical perspectives.
9.Research progress on the relationship between virus and lower urinary tract diseases and related mechanism
Yuexuan ZHU ; Qi SUN ; Zhangrui ZHU ; Jingwen XUE ; Peng WU
Chinese Journal of Urology 2024;45(1):75-78
The microbiome plays a role in the development of lower urinary tract diseases, but the impact of viruses on these conditions remains unclear. In recent years, research has emerged demonstrating a potential link between viruses and lower urinary tract diseases, including bladder cancer, prostate cancer, and overactive bladder. In this paper, the research of the correlation between viruses and lower urinary tract diseases and the related mechanisms were reviewed.
10.Is non-contrast-enhanced magnetic resonance imaging cost-effective for screening of hepatocellular carcinoma?
Genevieve Jingwen TAN ; Chau Hung LEE ; Yan SUN ; Cher Heng TAN
Singapore medical journal 2024;65(1):23-29
INTRODUCTION:
Ultrasonography (US) is the current standard of care for imaging surveillance in patients at risk of hepatocellular carcinoma (HCC). Magnetic resonance imaging (MRI) has been explored as an alternative, given the higher sensitivity of MRI, although this comes at a higher cost. We performed a cost-effective analysis comparing US and dual-sequence non-contrast-enhanced MRI (NCEMRI) for HCC surveillance in the local setting.
METHODS:
Cost-effectiveness analysis of no surveillance, US surveillance and NCEMRI surveillance was performed using Markov modelling and microsimulation. At-risk patient cohort was simulated and followed up for 40 years to estimate the patients' disease status, direct medical costs and effectiveness. Quality-adjusted life years (QALYs) and incremental cost-effectiveness ratio were calculated.
RESULTS:
Exactly 482,000 patients with an average age of 40 years were simulated and followed up for 40 years. The average total costs and QALYs for the three scenarios - no surveillance, US surveillance and NCEMRI surveillance - were SGD 1,193/7.460 QALYs, SGD 8,099/11.195 QALYs and SGD 9,720/11.366 QALYs, respectively.
CONCLUSION
Despite NCEMRI having a superior diagnostic accuracy, it is a less cost-effective strategy than US for HCC surveillance in the general at-risk population. Future local cost-effectiveness analyses should include stratifying surveillance methods with a variety of imaging techniques (US, NCEMRI, contrast-enhanced MRI) based on patients' risk profiles.
Humans
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Adult
;
Carcinoma, Hepatocellular/diagnostic imaging*
;
Liver Neoplasms/diagnostic imaging*
;
Cost-Effectiveness Analysis
;
Cost-Benefit Analysis
;
Quality-Adjusted Life Years
;
Magnetic Resonance Imaging/methods*

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