1.Syndrome Differentiation and Treatment Mechanisms of Inflammatory Injury in Diabetic Cardiomypathy from Theory of "Gaozhuo"
Xiaoyue WANG ; Yunfeng YU ; Xiangning HUANG ; Yixin XIANG ; Sihao ZHANG ; Qin XIANG ; Rong YU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(2):235-244
Diabetic cardiomyopathy (DCM) is one of the most common complications of diabetes mellitus and is a major threat to global health. As a key mechanism in the occurrence and progression of DCM, the inflammatory response persists throughout the entire course of the DCM. The Gaozhuo theory suggests that the basic pathogenesis of inflammatory injury in DCM is the Qi deficiency of spleen and kidney and Gaozhuo invasion, and divides the pathological process into three phases: Gaozhuo invasion, turbid heat damage to the channels, and turbid blood stasis and heat junction. Among them, the Qi deficiency of spleen and kidney and the endogenous formation of Gaozhuo represent the process of inflammatory factor formation induced by glucose metabolism disorders. Turbid heat damage to the channels refers to the process of myocardial inflammatory injury mediated by inflammatory factors, and turbid blood stasis and heat junction are the process of myocardial injury developing toward myocardial fibrosis and ventricular remodeling. As the disease continues to progress, it eventually develops into a depletion of the heart Yang, leading to the ultimate regression of heart failure. According to the theory of Gaozhuo, traditional Chinese medicine (TCM) should regulate inflammatory injury in DCM by strengthening the spleen and tonifying the kidney to address the root cause, and resolving dampness and lowering turbidity to treat the symptoms. If the turbidity has been stored for a long time and turns into heat, strengthening the spleen and tonifying the kidney, and clearing heat and resolving turbidity should be the therapy. If the turbidity, stasis, and heat are knotted in the heart and collaterals, strengthening the spleen and tonifying the kidney, and resolving stasis and lowering turbidity should be the therapy. TCM compounds and monomers can regulate the inflammatory response in DCM. TCM compounds can be divided into the categories for benefiting Qi to resolve turbidity, benefiting Qi and clearing heat to resolve turbidity, and benefiting Qi and activating blood to reduce turbidity. The compounds can inhibit upstream signals of inflammation and expression of inflammatory factors, improve the inflammatory damage to myocardium and blood vessels, myocardial fibrosis, and cardiac systole and diastole, and thus slow down the onset and progression of DCM.
2.Syndrome Differentiation and Treatment Mechanisms of Hepatic Stellate Cell Activation in Type 2 Diabetes Mellitus Combined with Non-alcoholic Fatty Liver Disease Based on Theory of "Gaozhuo"
Yixin XIANG ; Yunfeng YU ; Xiaoyue WANG ; Xiangning HUANG ; Qin XIANG ; Rong YU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(2):253-260
Non-alcoholic fatty liver disease (NAFLD) is one of the most common complications of type 2 diabetes mellitus (T2DM), and hepatic stellate cell (HSC) activation is the key link in the progression of NAFLD to liver fibrosis. According to the theory of "Gaozhuo", spleen deficiency and Qi stagnation, along with Gaozhuo invasion, are the causes of NAFLD progression to liver fibrosis, which reveals the pathogenesis essence of HSC activation in traditional Chinese medicine (TCM). Among them, spleen deficiency and Qi stagnation are the root causes of the endogenous formation of Gaozhuo. Spleen deficiency indicates the insulin sensitivity decrease and glucose metabolism disorders, and Qi stagnation means the dysregulation of hepatic glucose and lipid metabolism, which creates the preconditions for HSC activation. Gaozhuo invasion is the direct cause of HSC activation, including three stages: Internal retention of Gaozhuo, turbidity and stasis stagnation, and toxic stasis and consolidation. Internal retention of Gaozhuo refers to the abnormal metabolism and deposition of hepatic lipids, as well as the microcirculatory disorders. Turbidity and stasis stagnation is the process by which lipotoxicity stimulates the transformation of HSC into myofibroblast (MFB), and toxic stasis and consolidation represent the secretion of a large amount of extracellular matrix (ECM) by MFB to promote the fibrosis. According to the theory of Gaozhuo and the activation process of HSC, syndromes for T2DM combined with NAFLD can be classified into spleen deficiency and Qi stagnation with internal retention of Gaozhuo, spleen Qi deficiency with turbidity and stasis stagnation, and spleen Qi deficiency with toxic stasis and consolidation. Clinically, the treatment principle is to strengthen the spleen and promote Qi, resolve turbidity, and eliminate blood stasis. Both TCM compounds and monomers can effectively inhibit the HSC activation. TCM compounds can be classified into categories for regulating spleen and harmonizing liver, resolving turbidity and removing stasis, and detoxifying and removing stasis. They mainly work by improving lipid metabolism, reducing lipid accumulation in the liver, alleviating inflammatory and oxidative stress responses, inhibiting the activation and proliferation of HSC, and reducing ECM deposition, thereby delaying the progression of liver fibrosis.
3.Predictive value of preoperative plasma fibrinogen combined with lymphocyte-to-monocyte ratio in the prognosis of patients with esophageal squamous cell carcinoma
Xianneng HE ; Yishun XIANG ; Yunfeng LI ; Chengbin LIN ; Weiyu SHEN
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(04):570-577
Objective To investigate the prognostic value of preoperative plasma fibrinogen (FIB) combined with lymphocyte-to-monocyte ratio (LMR) in predicting the prognosis of patients with esophageal squamous cell carcinoma (ESCC). Methods A retrospective analysis was conducted on ESCC patients who underwent esophagectomy in the Affiliated Lihuili Hospital of Ningbo University from 2015 to 2018. Based on the cut-off values of preoperative FIB and LMR, the F-LMR scoring system was constructed, and patients were divided into three groups according to the F-LMR score. Kaplan-Meier analysis was used to assess 5-year overall survival (OS) and 5-year progression free survival (PFS), and univariate and multivariate Cox regression analyses were performed to identify prognostic factors. Results Finally 260 patients were collected, including 237 males and 23 females, with a median age of 64 years (IQR: 59-70). The 5-year OS rates for patients with F-LMR score of 0, 1, and 2 were 24.44%, 51.69%, and 67.31%, respectively, and the 5-year PFS rates were 15.56%, 42.37%, and 57.62%, respectively. Lower preoperative F-LMR scores were associated with worse prognosis. Multivariate analysis showed that deeper tumor invasion, presence of lymph node metastasis, larger tumor maximum diameter, and lower preoperative F-LMR score were independent risk factors for OS. Conclusion The F-LMR scoring system based on the preoperative FIB and LMR may serve as an effective tool for predicting the prognosis of patients with ESCC.
4.Zuogui Jiangtang Shuxin Prescription Ameliorates Lipid Deposition in Diabetic Cardiomyopathy of MKR Mice by Regulating AMPK/FoxO1/CD36 Signaling Pathway
Xiu LIU ; Juping WANG ; Jiawang HUANG ; Junju ZOU ; Qin XIANG ; Yunfeng YU ; Rong YU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):134-142
ObjectiveTo investigate the ameliorative effects and related mechanisms of the Zuogui Jiangtang Shuxin prescription (ZJSP) on glucose and lipid metabolism disorders in MKR mice with diabetic cardiomyopathy (DCM), with a focus on elucidating its regulatory role on the adenosine monophosphate-activated protein kinase (AMPK)/forkhead box protein O1 (FoxO1)/cluster of differentiation 36 (CD36) signaling pathway and lipid deposition. MethodsFifty 8-week-old male MKR mice were fed a high-fat diet for four weeks and then intraperitoneally injected with streptozotocin (STZ) while maintaining a high-fat diet to establish a DCM model. The mice were randomly divided into the model group, the low-dose(14.43 g·kg-1)and high-dose(28.86 g·kg-1) ZJSP groups, and the metformin group (0.25 g·kg-1), with age-matched FVB mice as a normal control group. Each group received intragastric administration of normal saline or corresponding concentrations of ZJSP at equal volumes. After four weeks, fasting blood glucose (FBG) and cardiac function were measured. Blood was collected from the eyeballs under anesthesia to detect fasting insulin (FINS) and blood lipid levels. Myocardial tissue morphology was observed by hematoxylin-eosin (HE) staining, and lipid deposition in the heart was assessed using oil red O staining. Real-time quantitative polymerase chain reaction (Real-time PCR) was used to measure the mRNA expression levels of AMPK, FoxO1, and CD36 in myocardial tissues. Western blot was employed to detect the protein expression levels of AMPK, p-AMPK, FoxO1, p-FoxO1, and CD36. ResultsCompared with the control group, the model group showed significantly increased levels of FBG and FINS (P<0.01), elevated levels of triglycerides (TG), total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C) (P<0.01), and significantly decreased left ventricular ejection fraction (EF) and fractional shortening (FS) values (P<0.01). HE staining revealed marked cardiomyocyte hypertrophy, disarray, and widened intercellular spaces in myocardial tissues. Oil Red O staining showed extensive red deposition areas and fine lipid droplet accumulation in the myocardial tissue. AMPK mRNA expression was decreased, while FoxO1 and CD36 mRNA expressions were significantly increased (P<0.01). The p-AMPK/AMPK protein expression ratio in myocardial tissues was significantly reduced, while the p-FoxO1/FoxO1 protein expression ratio and CD36 protein expression levels were significantly increased (P<0.01). Compared with the model group, all treatment groups exhibited significantly reduced FBG (P<0.01), decreased FINS and blood lipid levels (TG, TC, LDL-C) (P<0.05, P<0.01), improved cardiac function (P<0.05), noticeable amelioration of myocardial histopathological morphology and lipid deposition, increased AMPK mRNA expression (P<0.01), with significantly downregulated FoxO1 and CD36 mRNA expressions (P<0.01), elevated p-AMPK/AMPK protein expression levels in myocardial tissue (P<0.05), significantly decreased p-FoxO1/FoxO1 ratios (P<0.01), and downregulated CD36 protein expression levels (P<0.05, P<0.01). ConclusionZJSP exerts a protective effect on the heart in type 2 DCM of MKR mice, and its mechanism may be associated with the regulation of the AMPK/FoxO1/CD36 signaling pathway.
5.Zuogui Jiangtang Shuxin Prescription Ameliorates Lipid Deposition in Diabetic Cardiomyopathy of MKR Mice by Regulating AMPK/FoxO1/CD36 Signaling Pathway
Xiu LIU ; Juping WANG ; Jiawang HUANG ; Junju ZOU ; Qin XIANG ; Yunfeng YU ; Rong YU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):134-142
ObjectiveTo investigate the ameliorative effects and related mechanisms of the Zuogui Jiangtang Shuxin prescription (ZJSP) on glucose and lipid metabolism disorders in MKR mice with diabetic cardiomyopathy (DCM), with a focus on elucidating its regulatory role on the adenosine monophosphate-activated protein kinase (AMPK)/forkhead box protein O1 (FoxO1)/cluster of differentiation 36 (CD36) signaling pathway and lipid deposition. MethodsFifty 8-week-old male MKR mice were fed a high-fat diet for four weeks and then intraperitoneally injected with streptozotocin (STZ) while maintaining a high-fat diet to establish a DCM model. The mice were randomly divided into the model group, the low-dose(14.43 g·kg-1)and high-dose(28.86 g·kg-1) ZJSP groups, and the metformin group (0.25 g·kg-1), with age-matched FVB mice as a normal control group. Each group received intragastric administration of normal saline or corresponding concentrations of ZJSP at equal volumes. After four weeks, fasting blood glucose (FBG) and cardiac function were measured. Blood was collected from the eyeballs under anesthesia to detect fasting insulin (FINS) and blood lipid levels. Myocardial tissue morphology was observed by hematoxylin-eosin (HE) staining, and lipid deposition in the heart was assessed using oil red O staining. Real-time quantitative polymerase chain reaction (Real-time PCR) was used to measure the mRNA expression levels of AMPK, FoxO1, and CD36 in myocardial tissues. Western blot was employed to detect the protein expression levels of AMPK, p-AMPK, FoxO1, p-FoxO1, and CD36. ResultsCompared with the control group, the model group showed significantly increased levels of FBG and FINS (P<0.01), elevated levels of triglycerides (TG), total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C) (P<0.01), and significantly decreased left ventricular ejection fraction (EF) and fractional shortening (FS) values (P<0.01). HE staining revealed marked cardiomyocyte hypertrophy, disarray, and widened intercellular spaces in myocardial tissues. Oil Red O staining showed extensive red deposition areas and fine lipid droplet accumulation in the myocardial tissue. AMPK mRNA expression was decreased, while FoxO1 and CD36 mRNA expressions were significantly increased (P<0.01). The p-AMPK/AMPK protein expression ratio in myocardial tissues was significantly reduced, while the p-FoxO1/FoxO1 protein expression ratio and CD36 protein expression levels were significantly increased (P<0.01). Compared with the model group, all treatment groups exhibited significantly reduced FBG (P<0.01), decreased FINS and blood lipid levels (TG, TC, LDL-C) (P<0.05, P<0.01), improved cardiac function (P<0.05), noticeable amelioration of myocardial histopathological morphology and lipid deposition, increased AMPK mRNA expression (P<0.01), with significantly downregulated FoxO1 and CD36 mRNA expressions (P<0.01), elevated p-AMPK/AMPK protein expression levels in myocardial tissue (P<0.05), significantly decreased p-FoxO1/FoxO1 ratios (P<0.01), and downregulated CD36 protein expression levels (P<0.05, P<0.01). ConclusionZJSP exerts a protective effect on the heart in type 2 DCM of MKR mice, and its mechanism may be associated with the regulation of the AMPK/FoxO1/CD36 signaling pathway.
6.Application of ultrasound multimodal diagnostic mode combined with ultrasonic precision interventional technology in differentiating the benign from malignant solid breast masses
Shipeng WANG ; Weihong NIE ; Junde LIU ; Yunfeng CHEN ; Caixia GUO ; Xiang LI ; Yihe ZHANG
Journal of Interventional Radiology 2025;34(1):70-74
Objective To discuss the application of ultrasound multimodal diagnostic mode combined with ultrasonic precision interventional technology in differentiating the benign from malignant solid breast masses.Methods A total of 396 patients who underwent breast surgery at the Wuwei Cancer Hospital of China from May 2021 to July 2023 were enrolled in this study.Within 2 weeks before surgery,multimodal ultrasound examination(including two-dimensional ultrasound,color Doppler ultrasound,elastic ultrasound,breast three-dimensional ultrasound,and contrast-enhanced ultrasound)and ultrasound-guided needle biopsy were performed in all patients.The consistency between the results of multimodal ultrasound examination,ultrasound-guided needle biopsy,combination diagnosis and the postoperative pathological diagnoses was analyzed.Results Of the 396 patients with solid breast mass,malignant lesion was seen in 237(59.85%)and benign lesion was seen in 159(40.15%).The sensitivity of multimodal ultrasound in diagnosing benign and malignant solid breast masses was 77.64%(184/237),the specificity was 90.57%(144/159),the positive predictive value was 92.46%(184/199),the negative predictive value was 73.10%(144/197),the accuracy was 82.83%(328/396),and the consistency with the postoperative pathological diagnosis was 0.656.The sensitivity of ultrasound-guided needle puncture in diagnosing benign and malignant solid breast masses was 94.51%(224/237),the specificity was 100.00%(159/159),the positive predictive value was 100.00%(224/224),the negative predictive value was 92.44%(159/172),the accuracy was 96.72%(383/396),and the consistency with the postoperative pathological diagnosis was 0.933.The sensitivity of multimodal ultrasound combined with ultrasound-guided needle puncture in diagnosing benign and malignant solid breast masses was 100.00%(228/228),the specificity was 94.64%(159/168),the positive predictive value was 96.20%(228/237),the negative predictive value was 100.00%(159/159),the accuracy was 97.73%(387/396),and the consistency with the postoperative pathological diagnosis was 0.937.Conclusion The ultrasound multimodal diagnostic mode and ultrasonic precision interventional technology can be used in differentiating the benign from malignant solid breast masses with high diagnostic accuracy.
7.Research Progress on the Association between Schizophrenia and Toxoplasma gondii Infection
Zhu YITING ; Yang XIAOHUI ; Chen MIAORU ; Hu YU ; Chang YUNFENG ; Wu XIANG
Biomedical and Environmental Sciences 2024;37(6):647-660
Toxoplasma gondii(T.gondii or Tg),is an obligatory intracellular parasite with humans as its intermediate hosts.In recent years,significant correlations between T.gondii infection and schizophrenia have been reported,including the possible mediating mechanisms.Currently,mechanisms and hypotheses focus on central neurotransmitters,immunity,neuroinflammation,and epigenetics;however,the exact underlying mechanisms remain unclear.In this article,we review the studies related to T.gondii infection and schizophrenia,particularly the latest research progress.Research on dopamine(DA)and other neurotransmitters,the blood-brain barrier,inflammatory factors,disease heterogeneity,and other confounders is also discussed.In addition,we also summarized the results of some new epidemiological investigations.
8.Analysis of Potential Active Ingredients and Mechanism of Baihu Jia Renshentang in Treatment of Obesity Complicated with Type 2 Diabetes Mellitus
Danni TAN ; Qin XIANG ; Yunfeng YU ; Rong YU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(13):1-10
ObjectiveTo investigate the potential active ingredients and targets of Baihu Jia Renshentang(BHJRST) for the treatment of obesity combined with type 2 diabetes mellitus(T2DM) by network pharmacology and in vivo experiments. MethodUltra performance liquid chromatography-quadrupole/electrostatic field orbitrap high-resolution mass spectrometry(UPLC-Q-Exactive Orbitrap MS) was used to analyze and identify the material basis of BHJRST. Subsequently, potential targets for the action of the active ingredients were queried in databases such as ChEMBL, Therapeutic Target Database(TTD), YaTCM, DisGeNET and Traditional Chinese Medicine on Immuno-Oncology(TCMIO), and the shared targets were identified by taking the intersection of these targets with disease targets. The shared targets were imported into the STRING database to construct a protein-protein interaction(PPI) network, the hub genes were identified by cytoHubba plug-in, and molecular docking was used to validate the binding energy of the hub genes to the bioactive ingredients in BHJRST. Meanwhile, the shared targets were imported into the DAVID platform for gene ontology(GO) functional annotation and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment analysis. The predicted results were subsequently verified by animal experiments. Eighteen 8-week-old male skeletal muscle insulin-like growth factor-1 receptor dysfunction(MKR) mice were induced by a high-fat diet for 12 weeks in order to prepare a mouse model of obesity combined with T2DM. The mice were randomly divided into the model group, metformin group(0.2 g·kg-1) and BHJRST group(27 g·kg-1 in raw material), and another 6 male FVB mice of the same age as the normal group. The mice in each group were were given the corresponding drugs by gavage, and the normal and model groups were given the same amount of distilled water by gavage, 1 time/d for 6 consecutive weeks. At the end of administration, the body mass, Lee's index, fasting blood glucose(FBG), oral glucose tolerance test(OGTT) of mice in each group were examined, and the pathological morphology of the white adipose tissue of the epididymis was observed, and the expression of the mRNA of the hub genes in the white adipose tissue of the epididymis was detected by real-time fluorescence quantitative polymerase chain reaction(Real-time PCR). ResultA total of 200 bioactive components of BHJRST were identified, of which 64 bioactive components were reverse-matched to 384 targets, and a total of 308 targets were associated with obesity combined with T2DM. Hub genes included mitogen-activated protein kinase 1(MAPK1), signal transducer and activator of transcription 3(STAT3), MAPK3, interleukin(IL)-2, Janus kinase 1(JAK1), nuclear transcription factor-κB p65(RELA), estrogen receptor 1(ESR1), transcription factor AP-1(JUN), MAPK14 and lymphocyte-specific protein tyrosine kinase(LCK). GO functional annotation showed that it was mainly enriched in cytoplasm, cell membrane and nucleus, and was closely related to important biological processes such as peptide serine phosphorylation, protein phosphorylation and inflammation. In KEGG enrichment analysis, metabolic pathway, lipid and atherosclerosis, phosphatidylinositol 3-kinase(PI3K)/protein kinase B(Akt) and MAPK signal pathways were significantly enriched. The molecular docking results showed that the hub genes had a stable binding relationship with 10 bioactive components, including quercetin, isoliquiritigenin, and morin, in BHJRST. The results of animal experiments showed that BHJRST could significantly reduce body mass, Lee's index and FBG levels(P<0.01) in mice with obesity combined with T2DM, improve the pathological changes of white adipose tissue, and down-regulate the the mRNA expression of the hub genes in white adipose tissue of the epididymis(P<0.01). ConclusionIn this study, 10 potentially active components such as quercetin, isoliquiritigenin, and morin in BHJRST are identified through network pharmacology and animal experiments, and it is possible to treat obesity combined with T2DM by regulating lipid and atherosclerosis, phosphatidylinositol PI3K/Akt and MAPK signal pathways, which provides important clues and theoretical basis for the study of its mechanism and clinical application.
9.An enriched environment can promote nerve regeneration in a mouse model of sciatic nerve compression
Xiang LI ; Yunfeng CHEN ; Shiguang SHAO ; Hongrui ZHANG ; Qingjie JI ; Fangzhen SHAN ; Yunzhong WANG
Chinese Journal of Physical Medicine and Rehabilitation 2023;45(2):103-108
Objective:To document any effect of environmental enrichment on nerve regeneration in a mouse model of sciatic nerve compression and explore its mechanism.Methods:A crushed sciatic nerve model was successfully established in 22 C57BL/6 mice, and they were then randomly divided into an intervention group and a control group. The mice of the intervention group were raised in a cage with an enriched environment, while those of the control group were kept in a standard cage. Two weeks later, both groups′ gait was analyzed and the compound muscle action potential (CMAP) of the sciatic nerve was measured. The proportion of myelinated sciatic nerve fibers was examined using toluidine blue staining, and the expression of myelin basic protein (MBP), growth associated protein-43 (GAP43) and p75 neurotrophin receptor (p75 NTR) was measured using immunofluorescence intensity. Results:①The latency of the CMAP [(1.05±0.04)ms] was significantly shortened in the intervention group compared with the control group and the amplitude was significantly higher. ②Gait analysis showed a significant increase in the average contact intensity, stride length and stride rate of the intervention group compared with the control group. However, the step axis angle of the intervention group was significantly smaller than in the control group on average. ③The stained nerve fibers in the intervention group were orderly and dense, and the average number of myelinated fibers was significantly greater than in the control group. ④Quantitative analysis of the immunofluorescence showed that the levels of MBP, GAP43 and p75 NTR in the sciatic nerves of the intervention group were, on average, significantly higher than in the control group. Conclusion:An enriched environmental can promote the regeneration and functional recovery of crushed sciatic nerves by promoting the proliferation and myelination of Schwann cells.
10.Biomarkers of zinc deficiency in left-behind children under 1 year old in Zunyi area
Xiang ZHANG ; Yu CHENG ; Huiling SONG ; Yunfeng XIANG ; Hongjiao JIN ; Qing LI ; Xuqin WANG ; Limei LUO ; Yong LIN ; Bo HUANG
Chinese Journal of Applied Clinical Pediatrics 2022;37(9):697-701
Objective:To analyze the urine of normal healthy left-behind children under 1 year old and left-behind children with zinc deficiency under 1 year old in Zunyi area using hydrogen nuclear magnetic resonance ( 1HNMR), thus providing a new biomarker for the early diagnosis of zinc deficiency. Methods:From January to August 2018, a total of 40 normal healthy left-behind children under 1 year old in Zunyi area(healthy control group)[22 males and 18 females, average age of (7.78±3.62) months, average height of (65.01±2.67) cm and average body mass of (7.15±1.59) kg] and 40 age-matched left-behind children with zinc deficiency in the same region(zinc deficiency group)[19 males and 21 females, average age of (7.89±3.57) months, average height of (64.25±2.95) cm and average body mass of (7.02±1.68) kg] were included for a cross-sectional study by stratified sampling.The urine 1HNMR spectra of children in the 2 groups were measured, and the age, height, body mass and serum zinc content of children in the 2 groups were compared.The metabolites of the 2 groups were compared by metabono-mics technology combined with multivariate statistical analysis, and the differential metabolites of children with zinc deficiency were screened out. Results:There were no significant differences in age, height and body mass between the 2 groups (all P>0.05). The serum zinc level of healthy control group was significantly higher than that of zinc deficiency group [(54.3±3.06) mmol/L vs.(39.2±3.77) mmol/L, t=22.65, P<0.05]. Urine 1HNMR spectrogram results showed that compared with healthy controls, 4-hydroxyphenylpyruvic acid, phenyl acetyl glycine, and hippuric acid salt water were significantly lower in zinc deficiency group ( r=-0.620, -0.689, and -0.721, respectively, all | r|>0.602, all P<0.05). Conclusions:Zinc deficiency in left-behind children under 1 year old in Zunyi area is mainly manifested by decreased metabolites of 4-hydroxyphenylpyruvic acid, phenylacetyl glycine and horse-urate, suggesting metabolic disorder of intestinal flora.Differentially expressed metabolites have a potential application value in the early diagnosis of zinc deficiency.

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