Objective To investigate the effect of diet and lifestyle on cardiovascular comorbidity in elderly diabetic patients in community. Methods A total of 437 elderly patients with diabetes mellitus in a community of Huai'an City were divided into comorbidity group and non-comorbidity group according to the presence or absence of cardiovascular comorbidity. Dietary and lifestyle data were collected by self-designed questionnaires. The differences between the two groups were compared. Multivariate logistic regression was used to analyze the influencing factors of comorbidity of diabetes mellitus with cardiovascular disease. Results Among the surveyed patients, 184 (42.11%) had at least one comorbidity of cardiovascular disease, with the most common diseases being hypertension in 93 patients (21.28%), coronary heart disease in 71 patients (16.25%), and stroke in 42 patients (9.61%). Multivariate logistic regression analysis showed that: the risk of comorbidity in the male group was 1.528 times higher than that in the female group; the risk of comorbidity among individuals with inadequate carbohydrate intake was 1.520 times higher than that of individuals with adequate carbohydrate intake; the risk of comorbidity in the group with smoking history > 30 years was 1.299 times higher than that in the group ≤ 30 years; the risk of comorbidity was 49.80% lower in the group with tea preference than that in the group without tea preference; and the risk of comorbidity in the group not meeting the standard for exercise was 1.492 times higher than that in the group meeting the standard for exercise. All these differences were statistically significant (P<0.05). Conclusion The comorbidity of cardiovascular disease in elderly diabetic patients in community should not be ignored, and targeted dietary and lifestyle interventions are helpful for the prevention and control of comorbidity.

Objective To analyze the trends in the disease burden of schistosomiasis in China from 1992 to 2021, and to project the disease burden of schistosomiasis in China from 2022 to 2030, so as to provide insights into the elimination of schistosomiasis in China. Methods The prevalence, age-standardized prevalence, disability-adjusted life year (DALYs) rate and age-standardized DALYs rate of schistosomiasis, as well as the years lost due to disability (YLDs) rate and age-standardized YLDs rate of anemia attributable to Schistosoma infections in China, the world and different socio-demographic index (SDI) regions were captured from the Global Burden of Disease Study 2021 (GBD 2021) data resources, and the trends in the disease burden due to schistosomiasis were evaluated with estimated annual percentage change (EAPC) and its 95% confidence interval (CI). In addition, the age, period and cohort effects on the prevalence of schistosomiasis were examined in China using an age-period-cohort (APC) model, and the disease burden of schistosomiasis was predicted in China from 2022 to 2030 using a Bayesian age-period-cohort (BAPC) model. Results The age-standardized prevalence and DALYs rate of schistosomiasis, and the age-standardized YLDs rate of anemia attributable to Schistosoma infections were 761.32/10⁵, 5.55/10⁵ and 0.38/10⁵ in China in 2021. These rates were all lower than the global levels (1 914.30/10⁵, 21.90/10⁵ and 3.36/10⁵, respectively), as well as those in the medium SDI regions (1 413.61/10⁵, 12.10/10⁵ and 1.93/10⁵, respectively), low-medium SDI regions (2 461.03/10⁵, 26.81/10⁵ and 4.48/10⁵, respectively), and low SDI regions (5 832.77/10⁵, 94.48/10⁵ and 10.65/10⁵, respectively), but higher than those in the high SDI regions (59.47/10⁵, 0.49/10⁵ and 0.05/10⁵, respectively) and high-medium SDI regions (123.11/10⁵, 1.20/10⁵ and 0.12/10⁵, respectively). The prevalence and DALYs rate of schistosomiasis were higher among men (820.79/10⁵ and 5.86/10⁵, respectively) than among women (697.96/10⁵ and 5.23/10⁵, respectively) in China in 2021, while the YLDs rate of anemia attributable to Schistosoma infections was higher among women (0.66/10⁵) than among men (0.12/10⁵). The prevalence of schistosomiasis peaked at ages of 30 to 34 years among both men and women, while the DALYs rate of schistosomiasis peaked among men at ages of 15 to 19 years and among women at ages of 20 to 24 years. The age-standardized prevalence of schistosomiasis showed a moderate decline in China from 1992 to 2021 relative to different SDI regions [EAPC = -1.51%, 95% CI: (-1.65%, -1.38%)], while the age-standardized DALYs rate [EAPC = -3.61%, 95% CI: (-3.90%, -3.33%)] and age-standardized YLDs rate of anemia attributable to Schistosoma infections [EAPC = -4.16%, 95% CI: (-4.38%, -3.94%)] appeared the fastest decline in China from1992 to 2021 relative to different SDI regions. APC modeling showed age, period, and cohort effects on the trends in the prevalence of schistosomiasis in China from 1992 to 2021, and the prevalence of schistosomiasis appeared a rise followed by decline with age, and reduced with period and cohort. BAPC modeling revealed that the age-standardized prevalence and age-standardized DALYs rate of schistosomiasis, and age-standardized YLDs rate of anemia attributable to Schistosoma infections all appeared a tendency towards a decline in China from 2022 to 2030, which reduced to 722.72/10⁵ [95% CI: (538.74/10⁵, 906.68/10⁵)], 5.19/10⁵ [95% CI: (3.54/10⁵, 6.84/10⁵)] and 0.30/10⁵ [95% CI: (0.21/10⁵, 0.39/10⁵)] in 2030, respectively. Conclusions The disease burden of schistosomiasis appeared a tendency towards a decline in China from 1992 to 2021, and is projected to appear a tendency towards a decline from 2022 to 2030. There are age, period and cohort effects on the prevalence of schistosomiasis in China. Precision schistosomiasis control is required with adaptations to current prevalence and elimination needs.

BACKGROUND:Olfactory dysfunction is an early biological marker of various diseases.However,the neuroimaging mechanism by which olfactory dysfunction occurs following cerebral small vessel disease is unclear. OBJECTIVE:To explore the different neuroimaging mechanisms of olfactory function regulation in patients with cerebral small vessel disease and Parkinson's disease,and explore the potential application value of olfactory function assessment in patients with cerebral small vessel disease. METHODS:Neuropsychological and olfactory tests,high-resolution structural magnetic resonance and resting-state functional magnetic resonance data were collected in 80 patients with cerebral small vessel disease,44 healthy controls and 29 patients with Parkinson's disease.DPABI,SPM12 and SPSS were used to analyze and compare the amplitude of low frequency fluctuation,regional homogeneity and functional connectivity values between the cerebral small vessel disease,control and Parkinson's disease groups.Correlations between the significantly altered resting-state functional magnetic resonance imaging measures and olfactory and cognitive scores were evaluated. RESULTS AND CONCLUSION:Compared with the control group,low-frequency fluctuation amplitude of the right dorsolateral superior frontal gyrus and the regional homogeneity of the left wedge leaf were significantly reduced in the cerebral small vessel disease and Parkinson's disease groups.The right dorsolateral superior frontal gyrus and the left cuneiform lobe are the seed points.Compared with the Parkinson's disease group,the functional connectivity values of the right anterior cunei,inferior temporal gyrus,anterior central gyrus and dorsolateral superior frontal gyrus,left posterior central gyrus and inferior temporal gyrus were significantly enhanced in the control and cerebral small vessel disease groups.The left cuneiform lobe was the seed point.Compared with the control group,the functional connectivity of the left lingual gyrus was significantly weakened in the cerebral small vessel disease and Parkinson's disease groups.The functional connectivity values of the left middle temporal gyrus and the right posterior central gyrus were enhanced in the control group compared with the cerebral small vessel disease and Parkinson's disease group,and that was enhanced in the cerebral small vessel disease group compared with the Parkinson's disease group.Correlation analysis showed that the olfactory score and cognitive score were positively correlated in the cerebral small vessel disease group,and the regional homogeneity of the left wedge lobe was negatively correlated with the Montreal Cognitive Assessment Scale score,while the functional connectivity of left wedge lobe-left middle temporal gyrus in the Parkinson's disease group was positively correlated with the olfactory recognition score,and the functional connectivity values of the left wedge lobe-left posterior central gyrus and left wedge lobe-left lingual gyrus were positively correlated with the olfactory identification score and the total olfactory score,respectively.The regulation of olfactory function in patients with cerebral small vessel disease has a different neuroimaging mechanism from that of olfactory dysfunction in patients with Parkinson's disease.The olfactory function of patients with cerebral small vessel disease is related to cognitive function.It is speculated that the olfactory function following cerebral small vessel disease is a secondary change of brain dysfunction,while olfactory dysfunction following Parkinson's disease is directly caused by abnormal function of olfactory-related brain areas.Olfactory function assessment in patients with cerebral small vessel disease has potential application in predicting cognitive function.

Objective To explore the mechanism of Zishen Jianpi Huayu Tablets(Corni Fructus,Notoginseng Radix et Rhizoma,Astragali Radix,Puerariae Lobatae Radix,Spatholobi Caulis,Rehmanniae Radix)in the treatment of diabetic retinopathy(DR)by means of network pharmacology and molecular docking technique,and verified by in vitro experiments.Methods The active components of Zishen Jianpi Huayu Tablets and their corresponding target proteins were screened using the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP)and the BATMAN-TCM database.Drug target proteins were converted to their corresponding gene names through the UniProt database.DR-related targets were searched using"diabetic retinopathy"as a keyword in GeneCards,DrugBank,OMIM,and TTD databases.Common targets between the disease and the drug were identified using the Venny tool.These common targets were analyzed using the String database,a protein-protein interaction(PPI)network was constructed.Topological heterogeneity analysis was performed using Cytoscape 3.9.1 to select core targets and create a PPI network diagram.These common targets were entered into the Metascape database for Gene Ontology(GO)function analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis to identify potential action pathways.Molecular docking of the main active components and core targets was performed using Auto Dock tools software,followed by further experimental validation.The CCK-8 assay was used to assess the effect of Zishen Jianpi Huayu Tablet medicated serum on the cell viability of Human Retinal Microvascular Endothelial Cells(HRmECs)under high glucose conditions,and RT-qPCR was used to measure the expression of IL-1β,AKT1,VEGFA,and TP53 mRNA in HRmECs.Results(1)The effective components and corresponding target proteins of Zishen Jianpi Huayu Tablets were screened by Traditional Chinese Medicine System Pharmacology Database and Analysis Platform(TCMSP)and BATMAN-TCM database.The disease-related targets of DR were searched by GeneCards,OMIM and TTD databases.The use of VENNY platform for drug active components target and DR disease-related target to take intersection(common target),that is,Zishen Jianpi Huayu Tablets in the treatment of DR potential target.The network of"drugs-active components-common targets"was constructed to screen out the key active components of Zishen Jianpi Huayu Tablets in the treatment of DR.Import the common target into STRING database,obtain the PPI network relationship,and screen out the core target.Metascape platform was used to analyze the GO function and KEGG pathway enrichment of the common targets.The key active components and core targets were verified by Autodock 4 software for molecular docking.(2)The drug-containing serum and blank serum of Zishen Jianpi Huayu Tablets was prepared.Human retinal microvascular endothelial cells(HRmECs)were randomly divided into 5 groups:the control group(low-sugar DMEM medium+10%blank serum),high-glucose group(high-sugar DMEM medium+10%blank serum)and Zishen Jianpi Huayu Tablets containing low-,medium-and high-dose serum(high-sugar DMEM medium+10%low-,medium-and high-dose drug containing serum)were detected after 48 hours of culture.The proliferative activity of HRmECs cells was detected by CCK-8 method,and the mRNA expressions of IL-1β,AKT1,VEGFA and TP53 in HRmECs cells were detected by RT-qPCR method.Conclusion Zishen Jianpi Huayu Tablets may act on core targets such as IL-1β,IL-6 and VEGFA,as well as key pathways such as NF-κB signaling pathway,AGE-RAGE signaling pathway and PI3K-AKT pathway through various active components such as quercetin,kaempferol and rehmannia flavonoids,so as to play a therapeutic role in DR.

Objective:To investigate the expression level and clinical significance of HMGB1-TLR4-IL-23-IL-17A axis in se-rum of patients with psoriasis vulgaris.Methods:The expression levels of HMGB1,TLR4,IL-23 and IL-17A in serum of 60 patients with psoriasis vulgaris and 30 healthy volunteers were detected by ELISA.In addition,the differences of cytokines expression levels between moderate and severe psoriasis patients were compared,and the correlation between the expression levels of cytokines and the disease severity expressed by psoriasis area and severity index(PASI)were analyzed.The differences of expression levels of HMGB1-TLR4-IL-23-IL-17A axis before and after IL-17A inhibitor induction treatment were detected and compared in 22 moderate to severe psoriasis patients reached PASI75 and higher level.Results:The expression levels of serum HMGB1,TLR4,IL-23 and IL-17A in patients with psoriasis were obviously higher than those of healthy controls.Moreover,the expression levels of serum HMGB1,TLR4,IL-23 and IL-17A were even elevated in severe patients compared with moderate patients,and were positively correlated with PASI score.After induction treatment of IL-17A inhibitor,the expression levels of HMGB1-TLR4-IL-23-IL-17A aixs decreased significantly in serum of patients with psoriasis.Conclusion:HMGB1-TLR4-IL-23-IL-17A axis is highly expressed in patients with psoriasis vulgaris,and positively related to the disease severity,which may be involved in the disease process of psoriasis vulgaris and provide a new idea for the immunotherapy of psoriasis.

Objective:To examine the impact of varied surgical treatment strategies on the prognosis of patients with initial resectable gastric cancer liver metastases (IR-GCLM).Methods:This is a retrospective cohort study. Employing a retrospective cohort design, the study selected clinicopathological data from the national multi-center retrospective cohort study database, focusing on 282 patients with IR-GCLM who underwent surgical intervention between January 2010 and December 2019. There were 231 males and 51 males, aging ( M(IQR)) 61 (14) years (range: 27 to 80 years). These patients were stratified into radical and palliative treatment groups based on treatment decisions. Survival curves were generated using the Kaplan-Meier method and distinctions in survival rates were assessed using the Log-rank test. The Cox risk regression model evaluated HR for various factors, controlling for confounders through multivariate analysis to comprehensively evaluate the influence of surgery on the prognosis of IR-GCLM patients. A restricted cubic spline Cox proportional hazard model assessed and delineated intricate associations between measured variables and prognosis. At the same time, the X-tile served as an auxiliary tool to identify critical thresholds in the survival analysis for IR-GCLM patients. Subgroup analysis was then conducted to identify potential beneficiary populations in different surgical treatments. Results:(1) The radical group comprised 118 patients, all undergoing R0 resection or local physical therapy of primary and metastatic lesions. The palliative group comprised 164 patients, with 52 cases undergoing palliative resections for gastric primary tumors and liver metastases, 56 cases undergoing radical resections for gastric primary tumors only, 45 cases undergoing palliative resections for gastric primary tumors, and 11 cases receiving palliative treatments for liver metastases. A statistically significant distinction was observed between the groups regarding the site and the number of liver metastases (both P<0.05). (2) The median overall survival (OS) of the 282 patients was 22.7 months (95% CI: 17.8 to 27.6 months), with 1-year and 3-year OS rates were 65.4% and 35.6%, respectively. The 1-year OS rates for patients in the radical surgical group and palliative surgical group were 68.3% and 63.1%, while the corresponding 3-year OS rates were 42.2% and 29.9%, respectively. A comparison of OS between the two groups showed no statistically significant difference ( P=0.254). Further analysis indicated that patients undergoing palliative gastric cancer resection alone had a significantly worse prognosis compared to other surgical options ( HR=1.98, 95% CI: 1.21 to 3.24, P=0.006). (3) The size of the primary gastric tumor significantly influenced the patients′ prognosis ( HR=2.01, 95% CI: 1.45 to 2.79, P<0.01), with HR showing a progressively increasing trend as tumor size increased. (4) Subgroup analysis indicates that radical treatment may be more effective compared to palliative treatment in the following specific cases: well/moderately differentiated tumors ( HR=2.84, 95% CI 1.49 to 5.41, P=0.001), and patients with liver metastases located in the left lobe of the liver ( HR=2.06, 95% CI 1.19 to 3.57, P=0.010). Conclusions:In patients with IR-GCLM, radical surgery did not produce a significant improvement in the overall prognosis compared to palliative surgery. However, within specific patient subgroups (well/moderately differentiated tumors, and patients with liver metastases located in the left lobe of the liver), radical treatment can significantly improve prognosis compared to palliative approaches.

Objective:To investigate the molecular mechanisms of chronic rhinosinusitis (CRS), to identify key cell subgroups and genes, to construct effective diagnostic models, and to screen for potential therapeutic drugs.Methods:Key cell subgroups in CRS were identified through single-cell transcriptomic sequencing data. Essential genes associated with CRS were selected and diagnostic models were constructed by hdWGCNA (high dimensional weighted gene co-expression network analysis) and various machine learning algorithms. Causal inference analysis was performed using Mendelian randomization and colocalization analysis. Potential therapeutic drugs were identified using molecular docking technology, and the results of bioinformatics analysis were validated by immunofluorescence staining. Graphpad Prism, R, Python, and Adobe Illustrator software were used for data and image processing.Results:An increased proportion of basal and suprabasal cells was observed in CRS, especially in eosinophilic CRS with nasal polyps (ECRSwNP), with P=0.001. hdWGCNA revealed that the "yellow module" was closely related to basal and suprabasal cells in CRS. Univariate logistic regression and LASSO algorithm selected 13 key genes ( CTSC, LAMB3, CYP2S1, TRPV4, ARHGAP21, PTHLH, CDH26, MRPS6, TENM4, FAM110C, NCKAP5, SAMD3, and PTCHD4). Based on these 13 genes, an effective CRS diagnostic model was developed using various machine learning algorithms (AUC=0.958). Mendelian randomization analysis indicated a causal relationship between CTSC and CRS (inverse variance weighted: OR=1.06, P=0.006), and colocalization analysis confirmed shared genetic variants between CTSC and CRS (PPH4/PPH3>2). Molecular docking results showed that acetaminophen binded well with CTSC (binding energy:-5.638 kcal/mol). Immunofluorescence staining experiments indicated an increase in CTSC +cells in CRS. Conclusion:This study integrates various bioinformatics methods to identify key cell types and genes in CRS, constructs an effective diagnostic model, underscores the critical role of the CTSC gene in CRS pathogenesis, and provides new targets for the treatment of CRS.

Objective:To examine the impact of varied surgical treatment strategies on the prognosis of patients with initial resectable gastric cancer liver metastases (IR-GCLM).Methods:This is a retrospective cohort study. Employing a retrospective cohort design, the study selected clinicopathological data from the national multi-center retrospective cohort study database, focusing on 282 patients with IR-GCLM who underwent surgical intervention between January 2010 and December 2019. There were 231 males and 51 males, aging ( M(IQR)) 61 (14) years (range: 27 to 80 years). These patients were stratified into radical and palliative treatment groups based on treatment decisions. Survival curves were generated using the Kaplan-Meier method and distinctions in survival rates were assessed using the Log-rank test. The Cox risk regression model evaluated HR for various factors, controlling for confounders through multivariate analysis to comprehensively evaluate the influence of surgery on the prognosis of IR-GCLM patients. A restricted cubic spline Cox proportional hazard model assessed and delineated intricate associations between measured variables and prognosis. At the same time, the X-tile served as an auxiliary tool to identify critical thresholds in the survival analysis for IR-GCLM patients. Subgroup analysis was then conducted to identify potential beneficiary populations in different surgical treatments. Results:(1) The radical group comprised 118 patients, all undergoing R0 resection or local physical therapy of primary and metastatic lesions. The palliative group comprised 164 patients, with 52 cases undergoing palliative resections for gastric primary tumors and liver metastases, 56 cases undergoing radical resections for gastric primary tumors only, 45 cases undergoing palliative resections for gastric primary tumors, and 11 cases receiving palliative treatments for liver metastases. A statistically significant distinction was observed between the groups regarding the site and the number of liver metastases (both P<0.05). (2) The median overall survival (OS) of the 282 patients was 22.7 months (95% CI: 17.8 to 27.6 months), with 1-year and 3-year OS rates were 65.4% and 35.6%, respectively. The 1-year OS rates for patients in the radical surgical group and palliative surgical group were 68.3% and 63.1%, while the corresponding 3-year OS rates were 42.2% and 29.9%, respectively. A comparison of OS between the two groups showed no statistically significant difference ( P=0.254). Further analysis indicated that patients undergoing palliative gastric cancer resection alone had a significantly worse prognosis compared to other surgical options ( HR=1.98, 95% CI: 1.21 to 3.24, P=0.006). (3) The size of the primary gastric tumor significantly influenced the patients′ prognosis ( HR=2.01, 95% CI: 1.45 to 2.79, P<0.01), with HR showing a progressively increasing trend as tumor size increased. (4) Subgroup analysis indicates that radical treatment may be more effective compared to palliative treatment in the following specific cases: well/moderately differentiated tumors ( HR=2.84, 95% CI 1.49 to 5.41, P=0.001), and patients with liver metastases located in the left lobe of the liver ( HR=2.06, 95% CI 1.19 to 3.57, P=0.010). Conclusions:In patients with IR-GCLM, radical surgery did not produce a significant improvement in the overall prognosis compared to palliative surgery. However, within specific patient subgroups (well/moderately differentiated tumors, and patients with liver metastases located in the left lobe of the liver), radical treatment can significantly improve prognosis compared to palliative approaches.

ObjectiveTo study the changes of dry matter accumulation， mineral element absorption and medicinal component accumulation in Belamcanda chinensis and to provide a theoretical basis for fertilization in the standardized cultivation of B. chinensis. MethodDuring the two-year growth period of B. chinensis， the samples were collected at 30-day intervals from day 90 after sowing for the measurement of dry matter accumulation and mineral element content in different organs as well as the flavonoid content in the rhizome. ResultAccording to the accumulation of dry matter in different organs， the two-year growth period of B. chinensis was divided into seven stages： seedling stage （before July in the first year）， first-year vegetative growth stage （August to October in the first year）， first-year late growth stage （November to January of the second year）， re-growth stage （February to March in the second year）， second-year vegetative growth stage （April to May in the second year）， reproductive growth stage （June to October in the second year）， second-year late growth stage （November of the second year to January of the third year）. During the whole growth period， the late growth stage of each year witnessed the expansion of the rhizome， and the accumulation of dry matter of the whole plant peaked after the reproductive growth stage. The content of flavonoids in the rhizome varied greatly among different stages. Specifically， the content of mangiferin， tectorigenin and irigenin was higher in the second-year vegetative growth stage， and that of tectoridin and iridin was higher in the first-year late growth stage and the second-year late growth stage. The content of irisflorentin was higher in the second-year vegetative growth stage and the second-year late growth stage than that in other stages. The total content of six flavonoids peaked in the second-year vegetative growth stage （April in the second year）. The correlation analysis showed that all the nine mineral elements had different degrees of positive correlations with tectorigenin， irigenin and irisflorentin. ConclusionIn the first year， B. chinensis presents slow dry matter accumulation and low demand for fertilizer， so the application of base fertilizer can be reduced. In the second year， especially after the reproductive growth， B. chinensis demands high fertilizer， so nitrogen， phosphorus and potassium fertilizers and other micronutrients should be applied as early as possible. In addition， the rhizome expands in October to November of the first year and November to December of the second year， when the supply of nitrogen and potassium to the rhizome should be ensured or beneficial elements should be supplemented to improve the quality of B. chinensis.

ObjectiveTo investigate the effects of different nitrogen application rates on the growth， yield and quality of Belamcanda chinensis and to provide a theoretical basis for the quality and production efficiency improvement of B. chinensis. MethodA field experiment was carried out on the basis of 120 kg·hm^-2 phosphate and potassium fertilizers， with five nitrogen fertilizer treatments： 0 （N₀）， 60 （N₆₀）， 120 （N₁₂₀）， 180 （N₁₈₀） and 240 （N₂₄₀） kg·hm^-2. The effects of different nitrogen application rates on the agronomic traits， yield， mineral element accumulation and flavonoid content of B. chinensis were studied. ResultApplication of nitrogen fertilizer was beneficial to dry matter accumulation and significantly increased the yield of rhizome. After the application of nitrogen fertilizer， the yield of rhizome increased by 48.75%-86.62%. The nitrogen application at 60-180 kg·hm^-2 increased the active components such as tectoridin， iridin and irisflorentin， while it was not conducive to the accumulation of tectorigenin and irigenin in the rhizome. The accumulation of Mn and Fe reached the highest when the nitrogen application rate was 120 and 60 kg·hm^-2， respectively. The principal component analysis of active component content showed that the comprehensive score was ranked as N₁₈₀>N₁₂₀>N₆₀>N₂₄₀>N₀. The correlation analysis indicated that the tectoridin content had a positive correlation with N accumulation and a negative correlation with Ca accumulation in B. chinensis. The content of tectorigenin was negatively correlated with N accumulation and positively correlated with Ca accumulation. The content of irigenin had positive correlations with Ca and Zn accumulation. ConclusionThe nitrogen application at 120-180 kg·hm^-2 can increase the rhizome yield and the content of tectoridin， iridin and irisflorentin in the rhizome， so as to improve the yield and quality of this herb.