1.Effect of Different Fermentation Conditions on Fungal Community and Chemical Composition of Aurantii Fructus
Zhihong YAN ; Xiumei LIU ; Qiuyan GUAN ; Yonggui SONG ; Zhifu AI ; Genhua ZHU ; Yuhui PING ; Ming YANG ; Qin ZHENG ; Huanhua XU ; Dan SU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):254-262
ObjectiveTo investigate the effects of different fermentation methods and times on the fungal flora and chemical composition of Aurantii Fructus, in order to obtain the optimal fermentation conditions and flora structure, and to ensure the stability and controllability of the fermented varieties. MethodsScanning electron microscopy was used to observe and analyze the colony characteristics on the surface of Aurantii Fructus under different fermentation conditions. Internal transcribed spacer 2(ITS2) high-throughput sequencing, combined with fungal community diversity analysis and fungal community structure analysis, were used to obtain the fungal flora microbial categories of Aurantii Fructus under the conditions of traditional pressure-shelf fermentation and non-pressure-shelf natural fermentation for 7, 14, 21 d(numbered Y1-Y3 for the former, and numbered F1-F3 for the latter), respectively. At the same time, the chemical components in the fermentation process were detected by ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry(UPLC-Q-TOF-MS/MS), combined with principal component analysis(PCA), partial least squares-discriminant analysis(PLS-DA) and compound retention time, parent ions, characteristic fragment ions and other information, the differential compounds between the different fermentation samples were screened and identified. ResultsThe analysis of fungal community diversity showed that the dominant flora did not change at different fermentation time points in the traditional pressure-shelf fermentation method, while in the non-pressure-shelf natural fermentation method, there was a significant difference with the fermentation process, and at the genus level, the dominant genus of samples Y1, Y2, Y3 and F2 was Aspergillus, while the dominant genera of samples F1 and F3 were both Rhizopus. This indicated that the microbial growth environment provided by the traditional fermentation method was more stable, and the microbial community structure was more stable, which was more conducive to the stable and controllable fermentation process and fermented products. A total of 155 compounds were identified by compositional analysis, including 70 flavonoids, 38 coumarins, 10 alkaloids, 34 organic acids and 3 other compounds. After fermentation, two new components of ribalinine and pranferin were produced. Different fermentation conditions also brought about differences in chemical composition, multivariate statistical analysis obtained 26 differential compounds under two different fermentation methods, mainly including flavonoids, organic acids and coumarins. Comprehensively, the microbial community structure of samples fermented by the traditional pressure-shelf method of Aurantii Fructus for 14 d was stable, the species richness was high and the overall content of differential compounds was high, which was the optimal processing condition. ConclusionCompared with non-pressure-shelf natural fermentation, the traditional method has obvious advantages in terms of the stability of the microbial community structure and the content of chemical compounds, and the optimal condition is 14 days of fermentation. This study is helpful to promote the quality stability and fermentation bioavailability of fermented products of Aurantii Fructus, as well as to provide an experimental basis for the further improvement of the quality control methods of this variety.
2.Effect of Different Fermentation Conditions on Fungal Community and Chemical Composition of Aurantii Fructus
Zhihong YAN ; Xiumei LIU ; Qiuyan GUAN ; Yonggui SONG ; Zhifu AI ; Genhua ZHU ; Yuhui PING ; Ming YANG ; Qin ZHENG ; Huanhua XU ; Dan SU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):254-262
ObjectiveTo investigate the effects of different fermentation methods and times on the fungal flora and chemical composition of Aurantii Fructus, in order to obtain the optimal fermentation conditions and flora structure, and to ensure the stability and controllability of the fermented varieties. MethodsScanning electron microscopy was used to observe and analyze the colony characteristics on the surface of Aurantii Fructus under different fermentation conditions. Internal transcribed spacer 2(ITS2) high-throughput sequencing, combined with fungal community diversity analysis and fungal community structure analysis, were used to obtain the fungal flora microbial categories of Aurantii Fructus under the conditions of traditional pressure-shelf fermentation and non-pressure-shelf natural fermentation for 7, 14, 21 d(numbered Y1-Y3 for the former, and numbered F1-F3 for the latter), respectively. At the same time, the chemical components in the fermentation process were detected by ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry(UPLC-Q-TOF-MS/MS), combined with principal component analysis(PCA), partial least squares-discriminant analysis(PLS-DA) and compound retention time, parent ions, characteristic fragment ions and other information, the differential compounds between the different fermentation samples were screened and identified. ResultsThe analysis of fungal community diversity showed that the dominant flora did not change at different fermentation time points in the traditional pressure-shelf fermentation method, while in the non-pressure-shelf natural fermentation method, there was a significant difference with the fermentation process, and at the genus level, the dominant genus of samples Y1, Y2, Y3 and F2 was Aspergillus, while the dominant genera of samples F1 and F3 were both Rhizopus. This indicated that the microbial growth environment provided by the traditional fermentation method was more stable, and the microbial community structure was more stable, which was more conducive to the stable and controllable fermentation process and fermented products. A total of 155 compounds were identified by compositional analysis, including 70 flavonoids, 38 coumarins, 10 alkaloids, 34 organic acids and 3 other compounds. After fermentation, two new components of ribalinine and pranferin were produced. Different fermentation conditions also brought about differences in chemical composition, multivariate statistical analysis obtained 26 differential compounds under two different fermentation methods, mainly including flavonoids, organic acids and coumarins. Comprehensively, the microbial community structure of samples fermented by the traditional pressure-shelf method of Aurantii Fructus for 14 d was stable, the species richness was high and the overall content of differential compounds was high, which was the optimal processing condition. ConclusionCompared with non-pressure-shelf natural fermentation, the traditional method has obvious advantages in terms of the stability of the microbial community structure and the content of chemical compounds, and the optimal condition is 14 days of fermentation. This study is helpful to promote the quality stability and fermentation bioavailability of fermented products of Aurantii Fructus, as well as to provide an experimental basis for the further improvement of the quality control methods of this variety.
3.Trends and sex disparities in the burden of urolithiasis in 204 countries and territories, 1990-2021.
Junjiong ZHENG ; Qihang ZHANG ; Jie ZHANG ; Yuhui YAO ; Li CHEN ; Yunfei LIU ; Yi SONG ; Tianxin LIN ; Guohua HE
Chinese Medical Journal 2025;138(16):1973-1983
BACKGROUND:
Urolithiasis is a widespread disease with a high prevalence worldwide. This study aims to evaluate the disease burden of urolithiasis and its trends from 1990 to 2021 globally, based on the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2021 database.
METHODS:
The numbers and age-standardized rates (ASRs) of incidence, disability-adjusted life years (DALYs), and mortality of urolithiasis were extracted from GBD 2021 to represent the disease burden. Joinpoint regression analyses were conducted to assess the temporal trends in the burden of urolithiasis. The male-to-female ASR ratio indices were used to evaluate sex disparities. Additionally, we explored the relationship between the ASR ratio and the sociodemographic index (SDI).
RESULTS:
The total numbers of incidence, DALY, and mortality of urolithiasis were 105,983,780 cases (95% uncertainty interval [UI] = 88,349,356-128,645,155 cases), 693,444 cases (95% UI = 567,765-850,490 cases), and 17,672 cases (95% UI = 13,932-21,241 cases), respectively, in 2021. There is an increasing trend in the number of these measures globally, whereas the ASRs have decreased over the past 30 years. The age-standardized incidence rate (ASIR) and age-standardized mortality rate (ASMR) were significantly higher in males than in females in 2021. The sex disparities in the age-standardized DALY rate (ASDR) and ASMR of urolithiasis were negatively correlated with the SDI. In 2021, the ASIR of urolithiasis was 964.70 (95% UI = 801.26-1175.09) per 100,000 people in China, which is much lower than the global average (1242.84 [95% UI = 1034.94-1506.99] per 100,000 people). Compared with the global average, a more pronounced decline in ASIR was observed in China from 1793.16 (1446.0-2235.14) in 1990 to 964.70 (801.26-1175.09) per 100,000 people in 2021.
CONCLUSIONS
Urolithiasis poses a significant healthcare burden worldwide. More robust global and national strategies are warranted to address the prevention and treatment, especially in low SDI countries and regions.
Humans
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Urolithiasis/mortality*
;
Male
;
Female
;
Incidence
;
Global Burden of Disease
;
Disability-Adjusted Life Years
;
Adult
;
Middle Aged
;
Risk Factors
;
Sex Factors
4.Clinical study of reverse total shoulder arthroplasty versus open reduction and internal plate fixation for treatment of Neer three/four-part proximal humeral fractures in elderly.
Yuhui YANG ; Zhantao DENG ; Qingtian LI ; Xiurui ZHANG ; Yunzhi PENG ; Ruiying ZHANG ; Yuanchen MA ; Qiujian ZHENG
Chinese Journal of Reparative and Reconstructive Surgery 2025;39(4):412-419
OBJECTIVE:
To compare the effectiveness and shoulder function of reverse total shoulder arthroplasty (RTSA) and open reduction and internal fixation (ORIF) in the treatment of Neer three/four-part proximal humeral fractures in the elderly.
METHODS:
Randomized controlled analysis was conducted on 68 patients over 70 years old with Neer three/four-part proximal humeral fractures treated with RTSA or ORIF between January 2020 and June 2022. The patients were randomly divided into RTSA group ( n=32) and ORIF group ( n=36). There was no significant difference ( P>0.05) in the baseline data such as age, gender, body mass index, injured side, Neer classification, and preoperative Charlson comorbidity index, visual analogue scale (VAS) score, Constant shoulder score, Oxford shoulder score (OSS), and hemoglobin (Hb). The operation time, intraoperative blood loss, reduction of Hb on the 3rd day after operation, hospital stay, total cost of hospitalization, complication incidence, range of motion of shoulder joint at 2 years after operation, VAS score before operation and at 5 days and 1 month after operation, Constant shoulder score and OSS score before operation and at 2 years after operation, and imaging results during follow-up were recorded and compared between the two groups.
RESULTS:
Compared with the ORIF group, the RTSA group had longer operation time, less intraoperative blood loss, and higher total cost of hospitalization ( P<0.05). There was no significant difference in Hb reduction on the 3rd day after operation between the two groups ( P>0.05). The VAS scores significantly improved in both groups at 5 days and 1 month after operation ( P<0.05), but there was no significant difference between the two groups ( P>0.05). All patients were followed up 26-35 months, with an average of 31.2 months. In the RTSA group, there were 2 cases of poor healing of superficial incision and 1 case of transient nerve injury. There was no complication such as bone resorption around the prosthesis, lucent band, prosthesis loosening, or periprosthetic fracture in all patients. In the ORIF group, there was 1 case of poor healing of superficial incision, 3 cases of nonunion of fracture, 1 case of arthritis secondary to humeral head necrosis, and 1 case of bone absorption of large tuberosity, and no displacement or fracture failure of internal fixation was found in all patients. There was no significant difference in the incidence of complications [9.4% (3/32) vs 16.7% (6/36)] between the two groups [ OR (95% CI): 0.828 (0.171, 4.014), P=0.814]. In the RTSA group, 28 cases were graded 0 and 4 cases were graded 1 at 2 years after operation. Constant and OSS scores of RTSA group were significantly better than those of ORIF group ( P<0.05). The Constant score was significantly better than ORIF group in activity and strength, range of motion, lifting, abduction, and external rotation ( P<0.05), and there was no significant difference in pain, daily function, and internal rotation between the two groups ( P>0.05). The RTSA group had a significantly greater range of motion in lifting, abduction, and external rotation than ORIF group ( P<0.05), but there was no significant difference in internal rotation between the two groups ( P>0.05).
CONCLUSION
Application of RTSA as the initial treatment of Neer three/four-part proximal humeral fractures in the elderly can achieve better rehabilitation of joint activity and lower risk of early reoperation, and improve the quality of life of elderly fracture patients. However, the difficulty of revision and the high cost of treatment require the surgeon to pay full attention and strictly grasp the indications.
Humans
;
Fracture Fixation, Internal/instrumentation*
;
Male
;
Female
;
Shoulder Fractures/surgery*
;
Arthroplasty, Replacement, Shoulder/methods*
;
Aged
;
Bone Plates
;
Open Fracture Reduction/methods*
;
Range of Motion, Articular
;
Treatment Outcome
;
Shoulder Joint/physiopathology*
;
Aged, 80 and over
;
Operative Time
;
Postoperative Complications/epidemiology*
;
Length of Stay
5.Sub-committee of Anesthesiology of Guangzhou Integrated Traditional Chinese and Western Medicine Society.
Yi LU ; Cunzhi LIU ; Wujun GENG ; Xiaozhen ZHENG ; Jingdun XIE ; Guangfang ZHANG ; Chao LIU ; Yun LI ; Yan QU ; Lei CHEN ; Xizhao HUANG ; Hang TIAN ; Yuhui LI ; Hongxin LI ; Heying ZHONG ; Ronggui TAO ; Jie ZHONG ; Yue ZHUANG ; Junyang MA ; Yan HU ; Jian FANG ; Gaofeng ZHAO ; Jianbin XIAO ; Weifeng TU ; Jiaze SUN ; Yuting DUAN ; Bao WANG
Journal of Southern Medical University 2025;45(8):1800-1808
OBJECTIVES:
To explore the efficacy of DSA-guided intrathecal drug delivery system combined with Zi Wu Liu Zhu Acupoint Therapy for management of cancer pain and provide reference for its standardized clinical application. Methods and.
RESULTS:
Recommendations were formulated based on literature review and expert group discussion, and consensus was reached following expert consultation. The consensus recommendations are comprehensive, covering the entire treatment procedures from preoperative assessment and preparation, surgical operation process, postoperative management and traditional Chinese medicine treatment to individualized treatment planning. The study results showed that the treatment plans combining traditional Chinese with Western medicine effectively alleviated cancer pain, reduced the use of opioid drugs, and significantly improved the quality of life and enhanced immune function of the patients. Postoperative follow-up suggested good treatment tolerance among the patients without serious complications.
CONCLUSIONS
The formulated consensus is comprehensive and can provide reference for clinicians to use DSA-guided intrathecal drug delivery system combined with Zi Wu Liu Zhu Acupoint Therapy. The combined treatment has a high clinical value with a good safety profile for management of cancer pain.
Humans
;
Medicine, Chinese Traditional
;
Cancer Pain/therapy*
;
Drugs, Chinese Herbal/therapeutic use*
;
Drug Delivery Systems
;
Pain Management/methods*
;
China
6.Association between waist circumference and ischemic stroke: a prospective study in adults from Qingdao
Yuhui LI ; Lei LIU ; Dan HU ; Xiaoyan ZHENG ; Jun LYU ; Canqing YU ; Pei PEI ; Haiping DUAN ; Ruqin GAO ; Zengchang PANG ; Xiaocao TIAN ; Dianjianyi SUN
Chinese Journal of Epidemiology 2024;45(2):178-184
Objective:To analyze the association between waist circumference (WC) and ischemic stroke (IS).Methods:The data for the present study were from the prospective cohort study of China Kadoorie Biobank in Qingdao. Using baseline information and IS events of the participants, the Cox proportional hazard regression model and restricted cubic spline (RCS) were used to analyze the association between WC and IS.Results:A total of 33 355 participants were included in the study, with 302 008.88 person-years of follow-up. A total of 1 093 new cases of IS were observed. Multivariate Cox proportional hazard regression model analysis showed that compared to the respondents with normal WC (male <85.0 cm, female <80.0 cm), respondents with excessive WC (male ≥85.0 cm, female ≥80.0 cm) had a 78% higher risk of IS incidence [hazard ratio( HR)=1.78, 95% CI: 1.51-2.10], and the risk increased by 72% ( HR=1.72, 95% CI: 1.40-2.12) and 83% ( HR=1.83, 95% CI: 1.40-2.39) in men and women. According to the RCS, the increase in WC and the risk of IS showed an "S" trend of nonlinear dose-response relationship. Conclusions:The risk of IS would increase with the WC. Keeping a normal WC is important for preventing IS.
7.Association between short-term exposure to atmospheric fine particulate matter and ozone and inflammatory indicators in peripheral blood of patients with pneumonia
Lulu SONG ; Qi YU ; Nannan LIU ; Yuhui GAO ; Zeyu NIU ; Yan ZHANG ; Huiqiu ZHENG ; Jiayu TIAN ; Junxia LIU ; Lifang ZHAO ; Zhihong ZHANG
Shanghai Journal of Preventive Medicine 2024;36(6):551-558
ObjectiveTo explore the association between short-term exposure to atmospheric fine particulate matter (PM2.5) and ozone (O3) and systemic inflammatory indicators in patients with pneumonia, and to identify the susceptible populations. MethodsFrom September 2018 to April 2020, data of 1 480 patients admitted for pneumonia was collected from a tertiary hospital in Taiyuan City. Generalized additive models (GAMs) were used to explore the associations between PM2.5 and O3 exposure and inflammatory indicators of patients with pneumonia; and to explore the susceptibility factors and susceptible populations to PM2.5 and O3 exposures through stratified analyses. ResultsThe short-term exposure to PM2.5 was associated with changes in peripheral blood C-reation protein (CRP), erythrocyte sedimentation (ESR), easinophil (EOS), neutrophil (NEU) and neutrophil-lymphocyte ratio (NLR) in patients with pneumonia, and there were different degrees of hysteresis effects, with the effect values reaching a maximum at lag03, lag03, lag0, lag03, lag03, respectively, which were 4.13% (95%CI: 0.43%‒7.84%), 3.10% (95%CI: 0.24%‒5.97%), 5.27% (95%CI: 3.12%‒7.42%), 1.85% (95%CI: 0.36%‒3.34%), and 2.53% (95%CI: 0.53%‒4.74%) for every 10 μg·m-3 of PM2.5. The changes in O3 concentration were associated with the elevation of peripheral blood PCT and ESR in patients with pneumonia, and their effect values all reached the maximum at lag01 d, every 1 μg·m-3 of O3 elevation increased by 0.38% (95%CI: 0.04%‒0.73%) and 0.47% (95%CI: 0.19%‒0.76%), respectively. Stratified analyses showed that the associations of PM2.5 with peripheral blood CRP, ESR, NEU, and NLR in pneumonia patients were more significant in males, the elderly, and those with onset in the cold season; the associations of O3 with peripheral blood PCT and ESR in pneumonia patients were more significant in the elderly and those with onset in the warm season, and the peripheral blood CRP and PCT in female patients with pneumonia were more susceptible to the changes of O3. ConclusionShort-term exposure to atmospheric PM2.5 and O3 are positively associated with changes in inflammatory indicators in patients with pneumonia, and the effects of PM2.5 on patients with pneumonia are more extensive than those of O3, with a longer lag effect. In addition, elderly patients with pneumonia are more sensitive to air pollution, male patients with pneumonia are more sensitive to PM2.5, and female patients with pneumonia are more sensitive to O3. Cold and warm seasons can exacerbate the effects of PM2.5 and O3 on inflammatory indicators in patients with pneumonia, respectively, and the patients must be protected well.
8.Break the domestic public hospital clinical research evaluation system under the background of"five only"
Xiaowen CHEN ; Yongkai ZHU ; Yingyan ZHENG ; Yuhui LIN ; Peng SHI ; Liyuan HAN ; Pin JIA ; Rui DONG
Modern Hospital 2024;24(3):465-468,492
Objective The purpose of this article is to summarize and review the current status of the construction of clinical research evaluation systems in domestic public hospitals,identify existing problems in the evaluation system,and propose development strategies and suggestions.Methods Retrieved relevant articles,dissertations and policies from the past five years(2018-2022),screened the titles,viewed the full texts of 52 selected papers and their references,and summarized them.Results The"five-only"indicators have long been an important indicator for evaluating clinical research in public hospitals,but in today's scientific research environment and policy environment,the"five-only"evaluation system has revealed its utilitarian draw-backs and gradually evolved into a hindrance to scientific research.It is urgent to break through the"five-only"orientation and establish a clinical research evaluation system oriented towards"transforming and applying transformation of scientific research achievements".Conclusion The evaluation system for clinical research should break the previous"five-only"evaluation model based on quantity-oriented scientific research evaluation.We can draw on the framework of the research output,influence,and environment indicators in the UK's REF Excellence Framework model,combine the American APT system and the Chinese STEM indicator dimensions,explore multi-outcome evaluation,integrate developmental indicators,and continuously improve the indica-tor system and application methods in practice to promote the development of clinical research in public hospitals.
9.Analysis of pollen sensitization characteristics of artemisia allergic rhinitis in three urban and rural areas of Inner Mongolia
Chunying LI ; Xiaojia LIU ; Haixia XU ; Qiang FU ; Dongyue XU ; Xiaobo CUI ; Ji LIU ; Bolong SONG ; Ming ZHENG ; Yuhui OUYANG ; Xiangdong WANG ; Xiaoling LIU
Chinese Journal of Preventive Medicine 2024;58(6):806-814
Objective:To investigate the distribution rules of artemisia pollen and the clinical sensitization characteristics of allergic rhinitis (AR) induced by artemisia pollen in three urban and rural areas of Inner Mongolia.Methods:From March to October 2019, in 3 central cities (Chifeng, Hohhot, Ordos) and rural areas of Inner Mongolia, an epidemiological investigation method combining multi-stage stratified random sampling and face-to-face questionnaire survey was adopted to screen suspected AR patients, and skin prick test (SPT) was applied for diagnosis. At the same time, pollen monitoring was carried out in 3 areas to analyze the distribution and clinical sensitization characteristics of artemisia pollen.SPSS26.0 statistical software was used to process all the data. Chi-square test was used to compare rates among different age, sex, region and nationality, Spearman test was used to describe correlation analysis, and pairwise comparison of positive rates among multiple samples was used Bonferroni method.Results:Among the 6 393 subjects, 1 093 cases were diagnosed with AR, and the prevalence of AR was 17.10% (1 093/6 393). Among them, pollen-induced allergic rhinitis, the prevalence of PiAR was 10.97% (701/6 393), accounting for 64.14%(701/1 093).The highest incidence was in the youth group (20-39 years old), accounting for 46.94% (329/701).The diagnosed prevalence was higher in females than in males (11.35% vs. 10.64%, χ2 value 12.304, P<0.001).The prevalence rate of ethnic minority was higher than that of Han nationality (13.01% vs. 10.65%, χ2 value 6.296, P=0.008).The prevalence in urban areas was also significantly higher than that in rural areas (18.40% vs. 5.50%, χ2 value 10.497, P<0.001).There was significant difference in prevalence rate among the three regions in Inner Mongolia (6.06% in Chifeng, 13.46% in Hohhot, 16.39% in Ordos, χ2 value 70.054, P<0.001).The main clinical symptoms of artemisia PiAR were sneezing (95.58%), nasal congestion (91.73%) and nasal itching (89.30%).Allergic conjunctivitis accounted for 79.60% (558/701), chronic sinusitis for 55.63% (390/701), asthma for 23.25% (163/701).The pattern of artemisia pollen sensitization was mainly multiple sensitization, and the frequency of clinical symptoms and clinical diseases induced by hypersensitization with other allergens accounted for more than that caused by single artemisia pollen. The spread period of Artemisia pollen in the three regions was from June to October, and the peak state was in August in summer. The peak time of clinical symptoms in artemisia PiAR patients was about 2 weeks earlier than the peak time of pollen concentration, and the two were significantly positively correlated ( R=0.7671, P<0.001). Conclusion:Artemisia pollens are the dominant pollens in late summer and early autumn in Inner Mongolia, and the prevalence of artemisia PiAR is high. Controlling the spread of Artemisia pollens is of great significance for the prevention and treatment of AR.
10.Development of a radiomics model to discriminate ammonium urate stones from uric acid stones in vivo: A remedy for the diagnostic pitfall of dual-energy computed tomography
Junjiong ZHENG ; Jie ZHANG ; Jinhua CAI ; Yuhui YAO ; Sihong LU ; Zhuo WU ; Zhaoxi CAI ; Aierken TUERXUN ; Jesur BATUR ; Jian HUANG ; Jianqiu KONG ; Tianxin LIN
Chinese Medical Journal 2024;137(9):1095-1104
Background::Dual-energy computed tomography (DECT) is purported to accurately distinguish uric acid stones from non-uric acid stones. However, whether DECT can accurately discriminate ammonium urate stones from uric acid stones remains unknown. Therefore, we aimed to explore whether they can be accurately identified by DECT and to develop a radiomics model to assist in distinguishing them.Methods::This research included two steps. For the first purpose to evaluate the accuracy of DECT in the diagnosis of uric acid stones, 178 urolithiasis patients who underwent preoperative DECT between September 2016 and December 2019 were enrolled. For model construction, 93, 40, and 109 eligible urolithiasis patients treated between February 2013 and October 2022 were assigned to the training, internal validation, and external validation sets, respectively. Radiomics features were extracted from non-contrast CT images, and the least absolute shrinkage and selection operator (LASSO) algorithm was used to develop a radiomics signature. Then, a radiomics model incorporating the radiomics signature and clinical predictors was constructed. The performance of the model (discrimination, calibration, and clinical usefulness) was evaluated.Results::When patients with ammonium urate stones were included in the analysis, the accuracy of DECT in the diagnosis of uric acid stones was significantly decreased. Sixty-two percent of ammonium urate stones were mistakenly diagnosed as uric acid stones by DECT. A radiomics model incorporating the radiomics signature, urine pH value, and urine white blood cell count was constructed. The model achieved good calibration and discrimination {area under the receiver operating characteristic curve (AUC; 95% confidence interval [CI]), 0.944 (0.899–0.989)}, which was internally and externally validated with AUCs of 0.895 (95% CI, 0.796–0.995) and 0.870 (95% CI, 0.769–0.972), respectively. Decision curve analysis revealed the clinical usefulness of the model.Conclusions::DECT cannot accurately differentiate ammonium urate stones from uric acid stones. Our proposed radiomics model can serve as a complementary diagnostic tool for distinguishing them in vivo.

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