1.Exploration of Zhuyuwan in Treatment of Atherosclerosis from Perspective of Lipid Transport Disorder
Wei SONG ; Zhongyi ZHANG ; Hairong QIU ; Mei ZHAO ; Zubing ZHOU ; Tao SHEN ; Yong ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):54-61
This article discusses the key pathogenesis of atherosclerosis (AS) based on the physiological characteristics and pathological changes of lipids and introduces the therapeutic effect of Zhuyuwan on AS, aiming to provide a theoretical basis for the treatment of cardiovascular diseases from the spleen. As essential substances, lipids have the same essence but different forms. They circulate throughout the body with body fluids under the action of Yang Qi to nourish the nutrient Qi and support the defensive Qi. Lipid metabolism disorder often leads to the obstruction of Qi movement, the accumulation of dampness and turbidity, and the generation of phlegm and blood stasis. It has been proven that the formation of vulnerable plaques in AS is attributed to the interaction of three pathogenic factors: deficiency of healthy Qi, phlegm-turbidity, and collateral stasis. Their pathological essence is closely related to abnormal lipid metabolism. As lipids constitute the thick and dense components of body fluids, their impaired dispersion may lead to phlegm-turbidity and blood stasis, the pathological process of which is predominantly ascribed to the dysfunction of the spleen in distributing essence. Therefore, AS is rooted in spleen-stomach disorder, manifests as plaques formed by pathological product accumulation in vessels, with lipid transport disorder as its core pathogenesis. Specifically speaking, the dysfunction of spleen in transportation with accumulation of dampness-turbidity marks the initial stage, and blood turbidity and coagulation and phlegm-nodules accumulating in vessels represent the intermediate phase. Cold accumulation and stagnated heat transforming into toxins represent the terminal stage. Zhuyuwan, first recorded in Taiping Holy Prescriptions for Universal Relief, contains equal proportions of Coptidis Rhizoma and Evodiae Fructus. Coptidis Rhizoma, bitter and cold, exerts descending and purging actions to assist stomach Qi in lowering turbidity. Evodiae Fructus, pungent-bitter and hot, disperses obstruction and promotes free flow to support spleen Qi in ascending the clear. The compatibility of Coptidis Rhizoma and Evodiae Fructus ascends the clear and descends the turbid to harmonize Yin and Yang, assisting the spleen in distributing essence and resolving lipid accumulation to reduce lipid levels. In terms of the therapeutic mechanism, Zhuyuwan modulates lipid metabolism by correcting immune-inflammation network imbalance, improving gut microbiota composition and metabolism, and enhancing reverse cholesterol transport. By analyzing the pathological characteristics of lipid transport disorder in AS, this study delves into the intrinsic connections between cardiovascular disease and lipid transport disorder, giving novel insights into the prevention and treatment of AS.
2.Exploration of Zhuyuwan in Treatment of Atherosclerosis from Perspective of Lipid Transport Disorder
Wei SONG ; Zhongyi ZHANG ; Hairong QIU ; Mei ZHAO ; Zubing ZHOU ; Tao SHEN ; Yong ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):54-61
This article discusses the key pathogenesis of atherosclerosis (AS) based on the physiological characteristics and pathological changes of lipids and introduces the therapeutic effect of Zhuyuwan on AS, aiming to provide a theoretical basis for the treatment of cardiovascular diseases from the spleen. As essential substances, lipids have the same essence but different forms. They circulate throughout the body with body fluids under the action of Yang Qi to nourish the nutrient Qi and support the defensive Qi. Lipid metabolism disorder often leads to the obstruction of Qi movement, the accumulation of dampness and turbidity, and the generation of phlegm and blood stasis. It has been proven that the formation of vulnerable plaques in AS is attributed to the interaction of three pathogenic factors: deficiency of healthy Qi, phlegm-turbidity, and collateral stasis. Their pathological essence is closely related to abnormal lipid metabolism. As lipids constitute the thick and dense components of body fluids, their impaired dispersion may lead to phlegm-turbidity and blood stasis, the pathological process of which is predominantly ascribed to the dysfunction of the spleen in distributing essence. Therefore, AS is rooted in spleen-stomach disorder, manifests as plaques formed by pathological product accumulation in vessels, with lipid transport disorder as its core pathogenesis. Specifically speaking, the dysfunction of spleen in transportation with accumulation of dampness-turbidity marks the initial stage, and blood turbidity and coagulation and phlegm-nodules accumulating in vessels represent the intermediate phase. Cold accumulation and stagnated heat transforming into toxins represent the terminal stage. Zhuyuwan, first recorded in Taiping Holy Prescriptions for Universal Relief, contains equal proportions of Coptidis Rhizoma and Evodiae Fructus. Coptidis Rhizoma, bitter and cold, exerts descending and purging actions to assist stomach Qi in lowering turbidity. Evodiae Fructus, pungent-bitter and hot, disperses obstruction and promotes free flow to support spleen Qi in ascending the clear. The compatibility of Coptidis Rhizoma and Evodiae Fructus ascends the clear and descends the turbid to harmonize Yin and Yang, assisting the spleen in distributing essence and resolving lipid accumulation to reduce lipid levels. In terms of the therapeutic mechanism, Zhuyuwan modulates lipid metabolism by correcting immune-inflammation network imbalance, improving gut microbiota composition and metabolism, and enhancing reverse cholesterol transport. By analyzing the pathological characteristics of lipid transport disorder in AS, this study delves into the intrinsic connections between cardiovascular disease and lipid transport disorder, giving novel insights into the prevention and treatment of AS.
3.Four Weeks of HIIT Modulates Lactate-mediated Synaptic Plasticity to Improve Depressive-like Behavior in CUMS Rats
Yu-Mei HAN ; Zi-Wei ZHANG ; Jia-Ren LIANG ; Chun-Hui BAO ; Jun-Sheng TIAN ; Shi ZHOU ; Huan XIANG ; Yong-Hong YANG
Progress in Biochemistry and Biophysics 2025;52(6):1499-1510
ObjectiveThis study aimed to investigate the effects of 4-week high-intensity interval training (HIIT) on synaptic plasticity in the prefrontal cortex (PFC) of rats exposed to chronic unpredictable mild stress (CUMS), and to explore its potential mechanisms. MethodsA total of 48 male Sprague-Dawley rats were randomly divided into 4 groups: control (C), model (M), control plus HIIT (HC), and model plus HIIT (HM). Rats in groups M and HM underwent 8 weeks of CUMS to establish depression-like behaviors, while groups HC and HM received HIIT intervention beginning from the 5th week for 4 consecutive weeks. The HIIT protocol consisted of repeated intervals of 3 min at high speed (85%-90% maximal training speed, Smax) alternated with one minute at low speed (50%-55% Smax), with 3 to 5 sets per session, conducted 5 d per week. Behavioral assessments and tail-vein blood lactate levels were measured at the end of the 4th and 8th weeks. After the intervention, rat PFC tissues were collected for Golgi staining to analyze synaptic morphology. Enzyme-linked immunosorbent assays (ELISA) were employed to detect brain-derived neurotrophic factor (BDNF), monocarboxylate transporter 1 (MCT1), lactate, and glutamate levels in the PFC, as well as serotonin (5-HT) levels in serum. Additionally, Western blot analysis was conducted to quantify the expression of synaptic plasticity-related proteins, including c-Fos, activity-regulated cytoskeleton-associated protein (Arc), and N-methyl-D-aspartate receptor 1 (NMDAR1). ResultsCompared to the control group (C), the CUMS-exposed rats (group M) exhibited significant reductions in sucrose preference rates, number of grid crossings, frequency of upright postures, and entries into and duration spent in open arms of the elevated plus maze, indicating marked depressive-like behaviors. Additionally, the group M showed significantly reduced dendritic spine density in the PFC, along with elevated levels of c-Fos, Arc, NMDAR1 protein expression, and increased concentrations of lactate and glutamate. Conversely, BDNF and MCT1 contents in the PFC and 5-HT levels in serum were significantly decreased. Following HIIT intervention, rats in the group HM displayed considerable improvement in behavioral indicators compared with the group M, accompanied by significant elevations in PFC MCT1 and lactate concentrations. Furthermore, HIIT notably normalized the expression levels of c-Fos, Arc, NMDAR1, as well as glutamate and BDNF contents in the PFC. Synaptic spine density also exhibited significant recovery. ConclusionFour weeks of HIIT intervention may alleviate depressive-like behaviors in CUMS rats by increasing lactate levels and reducing glutamate concentration in the PFC, thereby downregulating the overexpression of NMDAR, attenuating excitotoxicity, and enhancing synaptic plasticity.
4.tRF Prospect: tRNA-derived Fragment Target Prediction Based on Neural Network Learning
Dai-Xi REN ; Jian-Yong YI ; Yong-Zhen MO ; Mei YANG ; Wei XIONG ; Zhao-Yang ZENG ; Lei SHI
Progress in Biochemistry and Biophysics 2025;52(9):2428-2438
ObjectiveTransfer RNA-derived fragments (tRFs) are a recently characterized and rapidly expanding class of small non-coding RNAs, typically ranging from 13 to 50 nucleotides in length. They are derived from mature or precursor tRNA molecules through specific cleavage events and have been implicated in a wide range of cellular processes. Increasing evidence indicates that tRFs play important regulatory roles in gene expression, primarily by interacting with target messenger RNAs (mRNAs) to induce transcript degradation, in a manner partially analogous to microRNAs (miRNAs). However, despite their emerging biological relevance and potential roles in disease mechanisms, there remains a significant lack of computational tools capable of systematically predicting the interaction landscape between tRFs and their target mRNAs. Existing databases often rely on limited interaction features and lack the flexibility to accommodate novel or user-defined tRF sequences. The primary goal of this study was to develop a machine learning based prediction algorithm that enables high-throughput, accurate identification of tRF:mRNA binding events, thereby facilitating the functional analysis of tRF regulatory networks. MethodsWe began by assembling a manually curated dataset of 38 687 experimentally verified tRF:mRNA interaction pairs and extracting seven biologically informed features for each pair: (1) AU content of the binding site, (2) site pairing status, (3) binding region location, (4) number of binding sites per mRNA, (5) length of the longest consecutive complementary stretch, (6) total binding region length, and (7) seed sequence complementarity. Using this dataset and feature set, we trained 4 distinct machine learning classifiers—logistic regression, random forest, decision tree, and a multilayer perceptron (MLP)—to compare their ability to discriminate true interactions from non-interactions. Each model’s performance was evaluated using overall accuracy, receiver operating characteristic (ROC) curves, and the corresponding area under the ROC curve (AUC). The MLP consistently achieved the highest AUC among the four, and was therefore selected as the backbone of our prediction framework, which we named tRF Prospect. For biological validation, we retrieved 3 high-throughput RNA-seq datasets from the gene expression omnibus (GEO) in which individual tRFs were overexpressed: AS-tDR-007333 (GSE184690), tRF-3004b (GSE197091), and tRF-20-S998LO9D (GSE208381). Differential expression analysis of each dataset identified genes downregulated upon tRF overexpression, which we designated as putative targets. We then compared the predictions generated by tRF Prospect against those from three established tools—tRFTar, tRForest, and tRFTarget—by quantifying the number of predicted targets for each tRF and assessing concordance with the experimentally derived gene sets. ResultsThe proposed algorithm achieved high predictive accuracy, with an AUC of 0.934. Functional validation was conducted using transcriptome-wide RNA-seq datasets from cells overexpressing specific tRFs, confirming the model’s ability to accurately predict biologically relevant downregulation of mRNA targets. When benchmarked against established tools such as tRFTar, tRForest, and tRFTarget, tRF Prospect consistently demonstrated superior performance, both in terms of predictive precision and sensitivity, as well as in identifying a higher number of true-positive interactions. Moreover, unlike static databases that are limited to precomputed results, tRF Prospect supports real-time prediction for any user-defined tRF sequence, enhancing its applicability in exploratory and hypothesis-driven research. ConclusionThis study introduces tRF Prospect as a powerful and flexible computational tool for investigating tRF:mRNA interactions. By leveraging the predictive strength of deep learning and incorporating a broad spectrum of interaction-relevant features, it addresses key limitations of existing platforms. Specifically, tRF Prospect: (1) expands the range of detectable tRF and target types; (2) improves prediction accuracy through multilayer perceptron model; and (3) allows for dynamic, user-driven analysis beyond database constraints. Although the current version emphasizes miRNA-like repression mechanisms and faces challenges in accurately capturing 5'UTR-associated binding events, it nonetheless provides a critical foundation for future studies aiming to unravel the complex roles of tRFs in gene regulation, cellular function, and disease pathogenesis.
5.Effect of Yiqi Huayu Decoction Combined with Calcium Dobesilate in Treating Diabetic Kidney Disease with Qi Deficiency and Blood Stasis Syndrome and Its Effect on the Expression Levels of Vascular Endothelial Growth Factor and Insulin-like Growth Factor 1
Hong-Mei PAN ; Zhong-Yong ZHANG ; Jin-Rong MA ; Guo-Hua LI ; Wei-Yi GUO ; Yang ZUO
Journal of Guangzhou University of Traditional Chinese Medicine 2024;41(3):583-589
Objective To investigate the clinical efficacy of Yiqi Huayu Decoction(mainly composed of Astragali Radix,Dioscoreae Rhizoma,Poria,fried Euryales Semen,Ecliptae Herba,Rosae Laevigatae Fructus,charred Crataegi Fructus,Ligustri Lucidi Fructus,Salviae Miltiorrhizae Radix et Rhizoma,and Leonuri Herba)combined with Calcium Dobesilate in the treatment of diabetic nephropathy(DN)with qi deficiency and blood stasis syndrome,and to observe the effect of the therapy on vascular endothelial growth factor(VEGF)and insulin-like growth factor 1(IGF-1).Methods Ninety patients with DN of qi deficiency and blood stasis type were randomly divided into an observation group and a control group,with 45 patients in each group.All patients received basic hypoglycemic therapy and treatment for controlling blood pressure and regulating lipid metabolism disorders.Moreover,the patients in the control group were given Calcium Dobesilate orally,and the patients in the observation group were given Yiqi Huayu Decoction combined with Calcium Dobesilate.The course of treatment lasted for 3 months.The changes of traditional Chinese medicine(TCM)syndrome scores,renal function parameters and serum VEGF and IGF-1 levels in the two groups of patients were observed before and after the treatment,and the clinical efficacy of the two groups was evaluated after treatment.Results(1)After 3 months of treatment,the total effective rate of the observation group was 91.11%(41/45),and that of the control group was 75.56%(34/45).The intergroup comparison(tested by chi-square test)showed that the therapeutic effect of the observation group was significantly superior to that of the control group(P<0.05).(2)After one month and 3 months of treatment,the TCM syndrome scores of both groups were significantly lower than those before treatment(P<0.05),and the scores after 3 months of treatment in the two groups were significantly lower than those after one month of treatment(P<0.05).The intergroup comparison showed that the reduction of TCM syndrome scores of the observation group was significantly superior to that of the control group after one month and 3 months of treatment(P<0.01).(3)After treatment,the levels of renal function parameters such as serum creatinine(Scr),blood urea nitrogen(BUN),and glomerular filtration rate(GFR)in the two groups of patients were significantly improved compared with those before treatment(P<0.05),and the observation group's effect on the improvement of all renal function parameters was significantly superior to that of the control group(P<0.01).(4)After treatment,the serum VEGF and IGF-1 levels in the two groups of patients were significantly lower than those before treatment(P<0.05),and the observation group's effect on the decrease of serum VEGF and IGF-1 levels was significantly superior to that of the control group(P<0.01).(5)In the course of treatment,no significant adverse reactions occurred in the two groups of patients,with a high degree of safety.Conclusion Yiqi Huayu Decoction combined with Calcium Dobesilate exerts certain therapeutic effect in treating DN patients with qi deficiency and blood stasis syndrome.The combined therapy can effectively down-regulate the serum levels of VEGF and IGF-1,significantly improve the renal function,and alleviate the clinical symptoms of the patients,with a high degree of safety.
6.Clinical evaluation of extracorporeal cardiopulmonary resuscitation in adult sudden cardiac death
Huazhong ZHANG ; Zhongman ZHANG ; Yong MEI ; Jinru LYU ; Deliang HU ; Feng SUN ; Wei LI ; Gang ZHANG ; Xufeng CHEN
Chinese Journal of Emergency Medicine 2024;33(2):204-209
Objective:To summarize the experience and effect of extracorporeal cardiopulmonary resuscitation (ECPR) on the treatment of sudden cardiac death (SCD).Methods:The data of 120 adults with SCD-ECPR in emergency department of the first affiliated hospital of Nanjing Medical University from April 2015 to April 2023 were retrospectively analyzed. The patients were grouped by Survival/death at 90 days, OHCA/IHCA (out-of-hospital/in-hospital cardiac arrest), with/without acute myocardial infarction (AMI) and divided according to 60 min of the time from cardiac arrest to extracorporeal membrane oxygenation (ECMO) initiation (CA-Pump On time). Age, sex, Charlson comorbidity index, IHCA/OHCA, initial rhythm, no-flow time, CA-Pump On time, ECMO evacuation success rate, 90-day survival rate, ECMO treatment time were analyzed.Results:①Total of 114 adult patients with SCD-ECPR were enrolled, and 45 (39.5%) patients survived at 90 days, of whom 40 (88.9%) patients had good neurological outcomes.②Age and no-flow time were significantly lower in the 90-day survival group than that in death group, and the proportion of IHCA and shockable initial rhythm was higher. ③The no flow time in IHCA group was significantly lower than that in OHCA group, and the 90-day survival rate was higher. ④OHCA and regional interhospital transport prolonged CA-Pump On time and reduced the 90-day survival rate. ⑤The AMI group was older with a higher Charlson comorbidity index, and the 90-day survival rate was significantly lower than that in non-AMI group.Conclusions:ECPR improves the prognosis of patients with SCD, there are high benefits in patients with long healthy life expectancy, IHCA, shockable initial rhythm, and short no flow time. The smooth life-saving chain of SCD-ECPR improves survival rate, by screening high benefit candidates in patients with OHCA, delayed initiation of ECPR or requiring interhospital transport, despite CA-Pump On time > 60 min, there is still survival potential.
7.The major adverse kidney events in acute myocardial infarction with extracorporeal cardiopulmonary resuscitation
Huazhong ZHANG ; Zhongman ZHANG ; Yong MEI ; Jinru LYU ; Deliang HU ; Feng SUN ; Wei LI ; Gang ZHANG ; Xufeng CHEN
Chinese Journal of Emergency Medicine 2024;33(2):222-227
Objective:To investigate the major adverse kidney events (MAKE) in acute myocardial infarction (AMI) with extracorporeal cardiopulmonary resuscitation (ECPR).Methods:The data of 75 patients with AMI-ECPR in Emergency Medicine Department of the First Affiliated Hospital of Nanjing Medical University from April 2015 to April 2023 were retrospectively analyzed. The patients were grouped by survival/death at 90 days, with/without renal replacement therapy (RRT), and whether to initiate RRT because of acute kidney injury (AKI). age, sex, Charlson comorbidity index, OHCA/IHCA (out-of-hospital/in-hospital cardiac arrest), initial rhythm, Gensini score, ECPR initial blood gas pH and lactate value, no-flow time, time from cardiac arrest to extracorporeal membrane oxygenation (ECMO) initiation (CA-Pump On time), ECMO and RRT treatment time, 90-day survival rate were analyzed. Moreover, the renal function of the survivors was followed up.Results:① Total of 68 AMI-ECPR patients were enrolled, 22 (32.4%) patients survived at 90 days, 54 (79.4%) combined with RRT, and 48 (70.6%) MAKE within 90 days. ②Compared with the death group, the 90-day survival group had a higher proportion of initial shockable heart rhythm, a lower Gensini score, a higher ECPR initial blood gas pH and a lower lactic acid value. ③The severity of coronary artery disease, ECPR initial acidosis and hyperlactacemia in the RRT group was significantly higher than that in the non-RRT group, and all the non-RRT group patients survived. ④ There was no difference between the AKI-RRT group and the non-AKI-RRT group. Of 21 patients with stage 1 AKI initiating RRT, 5 survived, one of them still needs RRT for 90 days, and 7 patients with stage 2 to 3 AKI initiating RRT died.Conclusions:The 90-day MAKE rate in AMI-ECPR patients was as high as 70.6%, and the 90-day renal insufficiency rate in AMI-ECPR survivors with AKI was as high as 20.0%. Active initiation of RRT to avoid AKI or early initiation of RRT may improve the prognosis of AMI-ECPR patients.
8.Clinical guidelines for the treatment of ankylosing spondylitis combined with lower cervical fracture in adults (version 2024)
Qingde WANG ; Yuan HE ; Bohua CHEN ; Tongwei CHU ; Jinpeng DU ; Jian DONG ; Haoyu FENG ; Shunwu FAN ; Shiqing FENG ; Yanzheng GAO ; Zhong GUAN ; Hua GUO ; Yong HAI ; Lijun HE ; Dianming JIANG ; Jianyuan JIANG ; Bin LIN ; Bin LIU ; Baoge LIU ; Chunde LI ; Fang LI ; Feng LI ; Guohua LYU ; Li LI ; Qi LIAO ; Weishi LI ; Xiaoguang LIU ; Hongjian LIU ; Yong LIU ; Zhongjun LIU ; Shibao LU ; Yong QIU ; Limin RONG ; Yong SHEN ; Huiyong SHEN ; Jun SHU ; Yueming SONG ; Tiansheng SUN ; Yan WANG ; Zhe WANG ; Zheng WANG ; Hong XIA ; Guoyong YIN ; Jinglong YAN ; Wen YUAN ; Zhaoming YE ; Jie ZHAO ; Jianguo ZHANG ; Yue ZHU ; Yingjie ZHOU ; Zhongmin ZHANG ; Wei MEI ; Dingjun HAO ; Baorong HE
Chinese Journal of Trauma 2024;40(2):97-106
Ankylosing spondylitis (AS) combined with lower cervical fracture is often categorized into unstable fracture, with a high incidence of neurological injury and a high rate of disability and morbidity. As factors such as shoulder occlusion may affect the accuracy of X-ray imaging diagnosis, it is often easily misdiagnosed at the primary diagnosis. Non-operative treatment has complications such as bone nonunion and the possibility of secondary neurological damage, while the timing, access and choice of surgical treatment are still controversial. Currently, there are no clinical practice guidelines for the treatment of AS combined with lower cervical fracture with or without dislocation. To this end, the Spinal Trauma Group of Orthopedics Branch of Chinese Medical Doctor Association organized experts to formulate Clinical guidelines for the treatment of ankylosing spondylitis combined with lower cervical fracture in adults ( version 2024) in accordance with the principles of evidence-based medicine, scientificity and practicality, in which 11 recommendations were put forward in terms of the diagnosis, imaging evaluation, typing and treatment, etc, to provide guidance for the diagnosis and treatment of AS combined with lower cervical fracture.
9.Establishment and evaluation of a rapid PCR-colloidal gold test strip method for the detection of Fritillaria ussuriensis
Yu-he MA ; Cong-hui SHANG ; Qiu-he MA ; Tao LI ; Yue LIU ; Bei-zhen PAN ; Li-jun GAO ; Ming-cheng LI ; Wei XIA ; Yong-mei QU
Acta Pharmaceutica Sinica 2024;59(6):1773-1778
This study design of specific identification primers for the ITS2 sequence of
10.Longitudinal extrauterine growth restriction in extremely preterm infants: current status and prediction model
Xiaofang HUANG ; Qi FENG ; Shuaijun LI ; Xiuying TIAN ; Yong JI ; Ying ZHOU ; Bo TIAN ; Yuemei LI ; Wei GUO ; Shufen ZHAI ; Haiying HE ; Xia LIU ; Rongxiu ZHENG ; Shasha FAN ; Li MA ; Hongyun WANG ; Xiaoying WANG ; Shanyamei HUANG ; Jinyu LI ; Hua XIE ; Xiaoxiang LI ; Pingping ZHANG ; Hua MEI ; Yanju HU ; Ming YANG ; Lu CHEN ; Yajing LI ; Xiaohong GU ; Shengshun QUE ; Xiaoxian YAN ; Haijuan WANG ; Lixia SUN ; Liang ZHANG ; Jiuye GUO
Chinese Journal of Neonatology 2024;39(3):136-144
Objective:To study the current status of longitudinal extrauterine growth restriction (EUGR) in extremely preterm infants (EPIs) and to develop a prediction model based on clinical data from multiple NICUs.Methods:From January 2017 to December 2018, EPIs admitted to 32 NICUs in North China were retrospectively studied. Their general conditions, nutritional support, complications during hospitalization and weight changes were reviewed. Weight loss between birth and discharge > 1SD was defined as longitudinal EUGR. The EPIs were assigned into longitudinal EUGR group and non-EUGR group and their nutritional support and weight changes were compared. The EPIs were randomly assigned into the training dataset and the validation dataset with a ratio of 7∶3. Univariate Cox regression analysis and multiple regression analysis were used in the training dataset to select the independent predictive factors. The best-fitting Nomogram model predicting longitudinal EUGR was established based on Akaike Information Criterion. The model was evaluated for discrimination efficacy, calibration and clinical decision curve analysis.Results:A total of 436 EPIs were included in this study, with a mean gestational age of (26.9±0.9) weeks and a birth weight of (989±171) g. The incidence of longitudinal EUGR was 82.3%(359/436). Seven variables (birth weight Z-score, weight loss, weight growth velocity, the proportion of breast milk ≥75% within 3 d before discharge, invasive mechanical ventilation ≥7 d, maternal antenatal corticosteroids use and bronchopulmonary dysplasia) were selected to establish the prediction model. The area under the receiver operating characteristic curve of the training dataset and the validation dataset were 0.870 (95% CI 0.820-0.920) and 0.879 (95% CI 0.815-0.942), suggesting good discrimination efficacy. The calibration curve indicated a good fit of the model ( P>0.05). The decision curve analysis showed positive net benefits at all thresholds. Conclusions:Currently, EPIs have a high incidence of longitudinal EUGR. The prediction model is helpful for early identification and intervention for EPIs with higher risks of longitudinal EUGR. It is necessary to expand the sample size and conduct prospective studies to optimize and validate the prediction model in the future.

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