43 results on '"Li, Si-yi"'
Search Results
2. A review of surface roughness measurements based on laser speckle method
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Shao, Mei-qi, Xu, Dong, Li, Si-yi, Zuo, Xiao-gang, Chen, Chang-ke, Peng, Gong-zhuang, Zhang, Jia-min, Wang, Xiao-chen, and Yang, Quan
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- 2023
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3. Understanding key determinants of health climate in building construction projects
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Li, Si-Yi, Shan, Ming, and Zhai, Zhao
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- 2023
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4. A carbon catalyst doped with Co and N derived from the metal-organic framework hybrid (ZIF-8@ZIF-67) for efficient oxygen reduction reaction
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Zhang, Ya-ting, Li, Si-yi, Zhang, Na-na, Lin, Gang, Wang, Rui-qi, Yang, Meng-nan, and Li, Ke-ke
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- 2023
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5. Identification of a distal enhancer that determines the expression pattern of acute phase marker C-reactive protein
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Wang, Ming-Yu, Zhang, Chun-Miao, Zhou, Hai-Hong, Ge, Zhong-Bo, Su, Chen-Chen, Lou, Zi-Hao, Zhang, Xin-Yun, Xu, Tao-Tao, Li, Si-Yi, Zhu, Li, Zhou, Ya-Li, Wu, Yi, and Ji, Shang-Rong
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- 2022
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6. C‐Reactive Protein Is Not the Driver Factor in Ulcerative Colitis.
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Ge, Zhong-Bo, Zhang, Xin-Yun, Zhang, Chun-Miao, Xu, Tao-Tao, Li, Si-Yi, Wei, Meng-Xiao, Ding, Xin-Yuan, Bai, Cai-Juan, Wang, Han, Zhou, Hai-Hong, Wang, Ming-Yu, and Mandal, Palash
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INTESTINAL mucosa ,RESEARCH funding ,BODY weight ,ULCERATIVE colitis ,DESCRIPTIVE statistics ,MICE ,COLON (Anatomy) ,SPLEEN ,DEXTRAN ,DRUG efficacy ,ANIMAL experimentation ,DATA analysis software ,C-reactive protein ,BIOMARKERS ,PHENOTYPES - Abstract
Purpose: C‐reactive protein (CRP) functions as a nonspecific marker in various inflammatory disorders, particularly in evaluating the efficacy of pharmacological treatments in patients with ulcerative colitis. The existing body of evidence does not offer adequate support for the direct implication of CRP in modulating the advancement of ulcerative colitis. Methods: Our study employed a rigorous mouse model. An ulcerative colitis mouse model was established by subjecting CRP‐deficient mice to dextran sulfate sodium (DSS) treatment. The phenotype of the mice, which encompassed parameters such as body weight, colon length, and spleen weight, was meticulously evaluated. Additionally, various physiological and biochemical indicators were assessed, including colon histopathology, expression levels of inflammatory factors, and staining of the intestinal mucus layer. Results: The absence of CRP did not significantly affect the phenotype, physiological characteristics, and biochemical indices in a mouse model of ulcerative colitis compared to mice with wild‐type CRP. Additionally, eliminating intestinal bacteria flora interference through antibiotic treatment revealed that mice lacking CRP did not demonstrate any notable variations in the ulcerative colitis model. Meanwhile, the survival rate of mice lacking CRP did not exhibit a statistically significant difference compared to wild‐type mice. Conclusion: The results of our study suggest that CRP may not directly mediate ulcerative colitis. Instead, it is more likely to be a bystander that is present alongside with elevated inflammatory factors. Further investigation is warranted to determine the precise role of CRP in humans, given the significant limitations associated with the use of mouse models. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Effect of regional cooperative rescue systems based on chest pain centers for patients with acute myocardial infarction in a first-tier city in China
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Zhang, Yu-Mei, Cheng, Lian-Chao, Zhou, Ming-Gang, Chen, Ying-Zhong, Zhu, Feng, Cui, Cai-Yan, Li, Si-Yi, and Cai, Lin
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- 2021
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8. 6-O-angeloylplenolin exerts neuroprotection against lipopolysaccharide-induced neuroinflammation in vitro and in vivo
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Zhou, Yi-le, Yan, Yong-ming, Li, Si-yi, He, Dan-hua, Xiong, Sha, Wei, Su-fen, Liu, Wei, Hu, Ling, Wang, Qi, Pan, Hua-feng, Cheng, Yong-xian, and Liu, Yong-qiang
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- 2020
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9. Mild haemoglobin drop and clinical outcomes in acute coronary syndrome patients: finding from the BleeMACS registry
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ZHANG, Ze-Kun, YAN, Yan, LI, Si-Yi, Raposeiras-Roubín, Sergio, Abu-Assi, Emad, Henriques, José P., D’Ascenzo, Fabrizio, Saucedo, Jorge, GONG, Wei, and NIE, Shao-Ping
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Research Article - Abstract
BACKGROUND: Haemoglobin drop is common in acute coronary syndrome (ACS) patients and correlates with poor prognosis. However, the association between mild haemoglobin drop and adverse clinical outcome remains insufficiently investigated. This study aimed to examine the association between in-hospital haemoglobin drop and risk for adverse clinical outcomes in ACS patients, especially those with mild drop. METHODS: Included patients from the BleeMACS (Bleeding complications in a Multicenter registry of patients discharged after an Acute Coronary Syndrome) registry were categorized into three groups by the presence and amount of in-hospital haemoglobin drop (non-drop, mild drop and severe drop). The cut-off point between mild drop and severe drop is ≥ 3 g/dL. Multivariate Cox regression was used to assess the association between haemoglobin drop and major adverse cardiac endpoints (MACE). Patients taking potent P2Y(12) inhibitors were selected for the additional analysis. Propensity score matching was used to avoid selective bias in the additional analysis. RESULTS: Of 6911 patients, 4949 patients (71.6%) experienced in-hospital haemoglobin drop. Compare with non-drop group, patients with haemoglobin drop had higher risk of MACE [adjusted hazard ratio (HR) = 1.36, 95% CI: 1.03–1.80 for mild drop group; adjusted HR = 1.70, 95% CI: 1.07–2.68 for severe drop group]. Patients in mild drop group were less likely to receive potent P2Y(12) inhibitors at discharge (mild drop group vs. severe drop group vs. non-drop group: 10.9% vs. 10.7% vs. 23.8%). After propensity score matching adjustment among patients with potent P2Y(12) inhibitors, patients in mild drop group were not associated with an increased risk of MACE than those in non-drop group (adjusted HR = 1.52, 95% CI: 0.49–4.72). CONCLUSIONS: In-hospital haemoglobin drop was common in ACS patients and associated with a higher risk for adverse events. Reduced prescription for potent P2Y(12) inhibitors may be responsible for poor prognoses among patients with mild haemoglobin drop.
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- 2022
10. Electroacupuncture Alleviates Diabetic Neuropathic Pain and Downregulates p-PKC and TRPV1 in Dorsal Root Ganglions and Spinal Cord Dorsal Horn.
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Ma, Yi-qi, Hu, Qun-qi, Kang, Yu rong, Ma, Li-qian, Qu, Si-ying, Wang, Han-zhi, Zheng, Yin-mu, Li, Si-yi, Shao, Xiao-mei, Li, Xiao-yu, Hu, Han-tong, Jiang, Yong-liang, Fang, Jian-qiao, and He, Xiao-fen
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PROTEIN kinases ,BODY weight ,DIABETIC neuropathies ,NEURALGIA ,ANIMAL experimentation ,WESTERN immunoblotting ,BLOOD sugar ,CALCITONIN ,TREATMENT effectiveness ,RATS ,RESEARCH funding ,ACUPUNCTURE points ,ELECTROACUPUNCTURE ,PAIN management ,CARRIER proteins - Abstract
Diabetic neuropathic pain (DNP) is a common complication of diabetes. Streptozotocin (STZ)-induced changes of protein in dorsal root ganglion (DRG) and spinal cord dorsal horn (SCDH) are critical for DNP genesis. However, which proteins change remains elusive. Here, the DNP model was established by a single intraperitoneal injection of STZ, accompanied by increased fasting blood glucose (FBG), decreased body weight (BW), and decreased paw withdrawal latency (PWL). Proteins change in L4-L6 DRGs and SCDH of rats were detected. Western blot and immunofluorescence results showed that expression levels of phosphorylated protein kinase C (p-PKC), transient receptor potential vanilloid-1 (TRPV1), Substance P (SP) and calcitonin gene-related peptide (CGRP) in the DRG and the SCDH of rats were increased after STZ injection. A preliminary study from our previous study showed that 2 Hz electroacupuncture (EA) effectively alleviates DNP. However, the analgesic mechanism of EA needs further elucidation. Here, EA at the bilateral Zusanli (ST36) and KunLun (BL60) acupoints was applied for one week, and to investigate the effect on DNP. EA reversed thermal hyperalgesia in DNP rats and downregulated the expression of p-PKC, TRPV1, SP, and CGRP in DRG and SCDH. [ABSTRACT FROM AUTHOR]
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- 2023
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11. Monolithic GaN-Based Driver and GaN Switch With Diode-Emulated GaN Technique for 50-MHz Operation and Sub-0.2-ns Deadtime Control.
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Wang, Tz-Wun, Kao, Yu-Yung, Hung, Sheng-Hsi, Wen, Yong-Hwa, Yang, Tzu-Hsien, Li, Si-Yi, Chen, Ke-Horng, Zheng, Kuo-Lin, Lin, Ying-Hsi, Lin, Shian-Ru, and Tsai, Tsung-Yen
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GALLIUM nitride ,SEMICONDUCTOR lasers ,LOGIC circuits - Abstract
In this article, the proposed monolithic gallium nitride (GaN)-based driver uses the diode-emulated technique to reduce reverse conduction through a meta-stable fast (MSF) comparator with sub-0.2-ns deadtime. In addition, an active bootstrap controller with a fast discharge loop is used to reduce parasitic effects to improve the driving capability, thereby increasing the switching frequency. Furthermore, the proposed gate driver with dual $dv/dt$ control can reduce the gate-ringing during turn-on/turn-off. Experimental results show that the GaN-based monolithic driver can achieve an operating frequency of 50 MHz and a slew rate of 120 V/ns. At 50 MHz, the conversion of 48-to-5 V can achieve a peak efficiency of 95.4% at the load current of 3.5 A. [ABSTRACT FROM AUTHOR]
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- 2022
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12. On the formation of beryllium bonds where radicals act as electron donors
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Yu, Dan, Wu, Di, Li, Ying, and Li, Si-Yi
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- 2016
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13. 48-to-1 V Direct Conversion Using High-Voltage Storage and Low-Voltage Boost Bootstrap Technique and Early Comparison On-Time Generator for Precise Nanosecond Pulses and 90.3% Efficiency in Automotive Applications.
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Li, Si-Yi, Chen, Bo-Ruen, Chen, Ke-Horng, Lin, Ying-Hsi, Lin, Shian-Ru, and Tsai, Tsung-Yen
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STORAGE ,COMPARATOR circuits - Abstract
This article presents a one-stage buck converter with an accurate nanosecond ON-time ($T_{\mathrm{\scriptscriptstyle ON}}$) control for 48–1-V direct conversion for automotive applications. In order to overcome the low duty cycle from 48 to 1 V, the proposed high-voltage storage and low-voltage boost (HSLB) bootstrap circuit can reduce the level shifter delay to close to zero and the bootstrap delay to less than 2 ns. In addition, the early comparison $T_{\mathrm{\scriptscriptstyle ON}}$ generator can reduce the comparator delay ($T_{d\_{}{\mathrm{ comp}}}$) to close to zero at steady state to achieve precise nanosecond pulse $T_{\mathrm{\scriptscriptstyle ON}}$. On the other hand, $T_{d\_{}{\mathrm{ comp}}}$ can be quickly extended to increase $T_{\mathrm{\scriptscriptstyle ON}}$ by 540% to achieve fast transient with the recovery time of 3 $\mu \text{s}$ , in case load changes from 200 mA to 1 A. Based on the precise nanosecond $T_{\mathrm{\scriptscriptstyle ON}}$ , the OFF-time is extended by the load-dependent current limiting OFF-time modulation for improving light-load efficiency. Experimental results show that the peak efficiency reaches 96.5%, 95.1%, and 92.8% when $V_{\mathrm {IN}}$ is 12, 24, and 48 V, respectively, for $V_{\mathrm {OUT}} = 1$ V. [ABSTRACT FROM AUTHOR]
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- 2022
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14. Gastric Mucosa Pathology in Rats with Precancerous Lesions of Gastric Cancer with Spleen Deficiency and Blood Stasis.
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Li, Qiu-yue, Yang, Peng-hui, Huang, Xin, Li, Xin-long, Luo, Min-yi, Xiao, Bi-juan, Zhao, Zi-ming, Li, Si-yi, and Pan, Hua-feng
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STOMACH tumors ,INTESTINAL tumors ,ENDOTHELIAL cells ,HERBAL medicine ,STAINS & staining (Microscopy) ,ANIMAL experimentation ,TIME ,ENDOPLASMIC reticulum ,HEMOSTASIS ,HEALTH outcome assessment ,RATS ,ELECTRON microscopy ,MITOCHONDRIA ,NITROGEN compounds ,SPLEEN ,GASTRIC mucosa ,PRECANCEROUS conditions ,CHINESE medicine - Abstract
Objective. This research aimed at better understanding the histopathological development of precancerous lesions of gastric cancer (PLGC) and organelle ultrastructure changes. Methods. Sprague-Dawley rats were randomly assigned to the model and control groups. Model rats drank N-methyl-N′-nitro-N-nitrosoguanidine solution, while control rats drank pure water ad libitum. At 1, 3, 5, 6, and 8 months after the start of feeding, eight rats were randomly chosen from each group, and gastric mucosa tissues were removed for histopathological analysis. H&E staining was applied to analyze the pathological histological structure of the rat gastric mucosa via a light microscope, and the ultrastructural changes were observed via a transmission electron microscope. Results. Gastric mucosal pathologies of model rats such as mucosal atrophy, intestinal metaplasia, inflammatory lesions, and even intraepithelial neoplasia deteriorated over time. The endoplasmic reticulum gap widened, the mitochondrial endothelial cristae were disrupted, the nuclear membrane thickened, and chromatin condensed with heterotypic alterations in the main and parietal cells. Additionally, endothelial cell enlargement and thickening of the microvascular intima were seen. Conclusion. Our research showed that the PLGC progression of rats is correlated with the pathological alteration axis of "normal gastric mucosa-gastric mucosa inflammatory changes-intestinal metaplasia with mild dysplasia-moderate to severe dysplasia." Ultrastructure analysis of model rats is compatible with the structural changes in the gastric mucosa with spleen deficiency and blood stasis. The pathological evolutionary axis and ultrastructural analysis are helpful for evaluating potential novel herbal therapies for PLGC. [ABSTRACT FROM AUTHOR]
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- 2022
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15. High Expression of Nuclear Snail, but not Cytoplasmic Staining, Predicts Poor Survival in Nasopharyngeal Carcinoma
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Luo, Wei-Ren, Li, Si-Yi, Cai, Long-Mei, and Yao, Kai-Tai
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- 2012
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16. Identifying the Antitumor Effects of Curcumin on Lung Adenocarcinoma Using Comprehensive Bioinformatics Analysis.
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Yang, Fei-Ran, Li, Si-Yi, Hu, Xi-Wen, Li, Xiu-Rong, and Li, Hui-Jie
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- 2022
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17. A High Conversion Ratio and 97.4% High Efficiency Three-Switch Boost Converter With Duty-Dependent Charge Topology for 1.2-A High Driving Current and 20% Reduction of Inductor DC Current in MiniLED Applications.
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Li, Si-Yi, Lin, Yen-An, Huang, Zheng-Lun, Lee, Jia-Jyun, Chen, Ke-Horng, Lin, Ying-Hsi, Lin, Shian-Ru, and Tsai, Tsung-Yen
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ELECTRIC potential ,TOPOLOGY ,HYSTERESIS ,CAPACITORS - Abstract
This article presents a three-switch (3S) boost converter with hysteresis current control applied in MiniLED panels. It uses only three power switches to achieve high conversion ratio (=7.5) and low inductor current (20% lower than conventional boost converters). Meanwhile, the charging time of the flying capacitor will increase as the duty cycle increases. It enables the proposed 3S boost converter to have a high drive current (=1.2 A). In addition, the right half-plane (RHP) zero of the proposed topology is related to the switching frequency. By dynamically adjusting the position of RHP zero during transients, the recovery time and output voltage drop can be reduced at the same time. When the load increases from 120 mA to 1.2 A, the recovery time can be accelerated to 42 $\mu \text{s}$ , and the maximum efficiency can reach 97.4%. [ABSTRACT FROM AUTHOR]
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- 2022
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18. Tumour budding and the expression of cancer stem cell marker aldehyde dehydrogenase 1 in nasopharyngeal carcinoma
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Luo, Wei-Ren, Gao, Fei, Li, Si-Yi, and Yao, Kai-Tai
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- 2012
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19. Nuclear expression of N-cadherin correlates with poor prognosis of nasopharyngeal carcinoma
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Luo, Wei-Ren, Wu, Ai-Bing, Fang, Wei-Yi, Li, Si-Yi, and Yao, Kai-Tai
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- 2012
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20. Neoplastic spindle cells in nasopharyngeal carcinoma show features of epithelial–mesenchymal transition
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Luo, Wei-Ren, Chen, Xiao-Yi, Li, Si-Yi, Wu, Ai-Bing, and Yao, Kai-Tai
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- 2012
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21. Phytochemical library screening reveals betulinic acid as a novel Skp2‐SCF E3 ligase inhibitor in non–small cell lung cancer.
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He, Dan‐Hua, Chen, Yu‐Fei, Zhou, Yi‐Le, Zhang, Shi‐Bing, Hong, Ming, Yu, Xianjun, Wei, Su‐Fen, Fan, Xiang‐Zhen, Li, Si‐Yi, Wang, Qi, Lu, Yongzhi, and Liu, Yong‐Qiang
- Abstract
Skp2 is overexpressed in multiple cancers and plays a critical role in tumor development through ubiquitin/proteasome‐dependent degradation of its substrate proteins. Drugs targeting Skp2 have exhibited promising anticancer activity. Here, we identified a plant‐derived Skp2 inhibitor, betulinic acid (BA), via high‐throughput structure‐based virtual screening of a phytochemical library. BA significantly inhibited the proliferation and migration of non–small cell lung cancer (NSCLC) through targeting Skp2‐SCF E3 ligase both in vitro and in vivo. Mechanistically, BA binding to Skp2, especially forming H‐bonds with residue Lys145, decreases its stability by disrupting Skp1‐Skp2 interactions, thereby inhibiting the Skp2‐SCF E3 ligase and promoting the accumulation of its substrates; that is, E‐cadherin and p27. In both subcutaneous and orthotopic xenografts, BA significantly inhibited the proliferation and metastasis of NSCLC through targeting Skp2‐SCF E3 ligase and upregulating p27 and E‐cadherin protein levels. Taken together, BA can be considered a valuable therapeutic candidate to inhibit metastasis of NSCLC. [ABSTRACT FROM AUTHOR]
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- 2021
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22. Admission hyperglycemia as an independent predictor of long‐term prognosis in acute myocardial infarction patients without diabetes: A retrospective study.
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Cui, Cai‐yan, Zhou, Ming‐gang, Cheng, Lian‐chao, Ye, Tao, Zhang, Yu‐mei, Zhu, Feng, Li, Si‐yi, Jiang, Xing‐lin, Chen, Qiang, Qi, Ling‐yao, Chen, Xu, Yang, Si‐qi, and Cai, Lin
- Subjects
HYPERGLYCEMIA ,MYOCARDIAL infarction ,PEOPLE with diabetes ,PROGNOSIS ,FORECASTING ,BLOOD sugar ,MORTALITY - Abstract
Aims/Introduction: The predictive value of admission hyperglycemia in the long‐term prognosis of acute myocardial infarction patients is still controversial. We aimed to investigate this value based on the diabetes status. Materials and Methods: We carried out a multicenter, retrospective study of 1,288 acute myocardial infarction patients enrolled in 11 hospitals between March 2014 and June 2019 in Chengdu, China. The patients were classified into those with diabetes and those without diabetes, each was further divided into: hyperglycemia and non‐hyperglycemia subgroups, according to the optimal cut‐off value of the blood glucose to predict all‐cause mortality during follow up. The end‐points were all‐cause death and major adverse cardiovascular and cerebrovascular events, including all‐cause death, non‐fatal myocardial infarction, vessel revascularization and non‐fatal stroke. Results: In the follow‐up period of 15 months, we observed 210 (16.3%), 6 (0.5%), 57 (4.4%) and 34 (2.6%) cases of death, non‐fatal myocardial infarction, revascularization and non‐fatal stroke, respectively. The optimal cut‐off values of admission blood glucose for patients with diabetes and patients without diabetes to predict all‐cause mortality during follow up were 14.80 and 6.77 mmol/L, respectively. We divided patients with diabetes (n = 331) into hyperglycemia (n = 92) and non‐hyperglycemia (n = 239), and patients without diabetes (n = 897) into hyperglycemia (n = 425) and non‐hyperglycemia (n = 472). The cumulative rates of all‐cause death and major adverse cardiovascular and cerebrovascular events among the patients in each hyperglycemia group was higher than that in the corresponding non‐hyperglycemia group (P < 0.001). In patients without diabetes, admission hyperglycemia was an independent predictor of all‐cause mortality and major adverse cardiovascular and cerebrovascular events. Conclusion: Admission hyperglycemia was an independent predictor for long‐term prognosis in acute myocardial infarction patients without diabetes. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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23. The relationships among self-efficacy, social support, and self-care behavior in the elderly patients with chronic pain (a STROBE-compliant article).
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Si-yi Li and Li, Si-Yi
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- 2021
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24. Frequency of ST-segment elevation myocardial infarction, non-ST-segment myocardial infarction, and unstable angina: results from a Southwest Chinese Registry.
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Si-Yi Li, Ming-Gang Zhou, Tao Ye, Lian-Chao Cheng, Feng Zhu, Cai-Yan Cui, Yu-Mei Zhang, Lin Cai, Li, Si-Yi, Zhou, Ming-Gang, Ye, Tao, Cheng, Lian-Chao, Zhu, Feng, Cui, Cai-Yan, Zhang, Yu-Mei, and Cai, Lin
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ACUTE coronary syndrome ,MYOCARDIAL infarction ,MEDICAL care ,ACQUISITION of data ,RETROSPECTIVE studies ,ANGINA pectoris ,ACE inhibitors ,CARDIOVASCULAR system ,TREATMENT effectiveness ,RESEARCH funding ,ANGIOTENSIN receptors - Abstract
The burden of cardiovascular disease is predicted to escalate in developing countries. The aim of this study is to assess the characteristics, management strategies and outcomes of the patients with acute coronary syndrome (ACS) who were admitted to hospitals under the chest pain center mode in southwest P. R. China. Adults hospitalized with a diagnosis of ACS were enrolled in the retrospective, observational registry between January 2017 and June 2019 at 11 hospitals in Chengdu, P. R. China. The collected data included the patients' baseline characteristics, clinical management and in-hospital outcomes. After Statistical analysis, (1) A total of 2857 patients with ACS, among which 1482 have ST-segment elevation myocardial infarction (STEMI), 681 have non-STEMI (NSTEMI) and 694 have unstable angina (UA) were enrolled in the study. (2) 61.3% of the ACS patients received reperfusion therapy. More patients with STEMI underwent percutaneous coronary intervention (PCI) compared with NSTEMI/UA patients (80.6% vs. 38.8%, P < 0.001), while thrombolytics were administered in only 1.8% of STEMI patients. (3) The median time from symptoms to hospital was 190 min (IQR 94-468) in STEMI, 283 min (IQR 112-1084) in NSTEMI and 337 min (IQR 97-2220) in UA (P < 0.001), and the door-to-balloon time for primary PCI (pPCI) was 85 min (IQR 55-121) in STEMI. (4) The in-hospital outcomes for STEMI patients included death (8.1%) and acute heart failure (22.6%), while the outcomes for those with NSTEMI and UA were better: death (4.0% and 0.9%, P < 0.001) and acute heart failure (15.3% and 9.9%, P < 0.001). (5) Antiplatelet drugs, lipid-lowering drugs, β-blockers and angiotensin-converting enzyme inhibitors (ACEI) /angiotensin receptor blockers (ARB) were used in about 98.3%, 95.0%, 67.7% and 54.3% of the ACS patients, respectively. Therefore, the management capacity in Chengdu has relatively increased compared with previous studies, but important gaps still exist compared with developed countries, especially regarding the management of the NSTEMI/UA patients. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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25. On single-electron magnesium bonding formation and the effect of methyl substitution.
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Yu, Dan, Wu, Di, Liu, Jing-Yao, Li, Si-Yi, and Li, Ying
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- 2020
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26. Partitioning gene-based variance of complex traits by gene score regression.
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Zhang, Wenmin, Li, Si Yi, Liu, Tianyi, and Li, Yue
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HUMAN genome , *GENE expression , *GENES , *LINKAGE disequilibrium , *HUMAN genes , *CAUSAL models - Abstract
The majority of genome-wide association studies (GWAS) loci are not annotated to known genes in the human genome, which renders biological interpretations difficult. Transcriptome-wide association studies (TWAS) associate complex traits with genotype-based prediction of gene expression deriving from expression quantitative loci(eQTL) studies, thus improving the interpretability of GWAS findings. However, these results can sometimes suffer from a high false positive rate, because predicted expression of different genes may be highly correlated due to linkage disequilibrium between eQTL. We propose a novel statistical method, Gene Score Regression (GSR), to detect causal gene sets for complex traits while accounting for gene-to-gene correlations. We consider non-causal genes that are highly correlated with the causal genes will also exhibit a high marginal association with the complex trait. Consequently, by regressing on the marginal associations of complex traits with the sum of the gene-to-gene correlations in each gene set, we can assess the amount of variance of the complex traits explained by the predicted expression of the genes in each gene set and identify plausible causal gene sets. GSR can operate either on GWAS summary statistics or observed gene expression. Therefore, it may be widely applied to annotate GWAS results and identify the underlying biological pathways. We demonstrate the high accuracy and computational efficiency of GSR compared to state-of-the-art methods through simulations and real data applications. GSR is openly available at https://github.com/li-lab-mcgill/GSR. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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27. Evaluating the importance of nodes in the urban logistics UAV distribution network based on complex network theory.
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Huang, Long-yang, Li, Si-yi, Zou, Xiang, Zhao, Bo-zhi, and Li, Cheng-long
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- 2023
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28. The effect of hydration on the electronic structure and stability of the superalkali cation Li3+.
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Hou, Jia-Huan, Wu, Di, Liu, Jia-Yuan, Li, Si-Yi, Yu, Dan, and Li, Ying
- Abstract
The interaction of the superalkali cation Li
3 + with water molecules, as well as the structures and stability of the resulting water complexes are theoretically studied at the MP2/6-311++G(d,p) level. A great number of geometrical configurations were obtained for the Li3 + (H2 O)n (n = 1–5) complexes and Li3 + is found to have a maximum coordination number of four. Natural population analysis shows that the charge distribution of Li3 + becomes seriously uneven upon interaction with five water molecules, so it loses ring conjugation and splits in the lowest-energy isomer of Li3 + (H2 O)5 . Localized molecular orbital energy decomposition analysis indicates a dominant contribution of electrostatic interactions to the binding of water molecules to Li3 + , which is similar to the case of lithium ion hydrates. However, as the number of water ligands reaches five, the contribution of the exchange-repulsion energy exhibits a sharp increase and even exceeds that of the electrostatic term. [ABSTRACT FROM AUTHOR]- Published
- 2018
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29. nEfficient External Electric Field Manipulated Nonlinear Optical Switches of All-Metal Electride Molecules with Infrared Transparency: Nonbonding Electron Transfer Forms an Excess Electron Lone Pair.
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He, Hui-Min, Li, Ying, Yang, Hui, Yu, Dan, Li, Si-Yi, Wu, Di, Hou, Jian-Hua, Zhong, Rong-Lin, Zhou, Zhong-Jun, Gu, Feng-Long, Luis, Josep M., and Li, Zhi-Ru
- Published
- 2017
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30. Insight into structural and π–magnesium bonding characteristics of the X2Mg…Y (X = H, F; Y = C2H2, C2H4 and C6H6) complexes.
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Li, Si-Yi, Wu, Di, Li, Ying, Yu, Dan, Liu, Jia-Yuan, and Li, Zhi-Ru
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- 2016
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31. The anti-tumor effect of co-cultured DC-CIK from peripheral blood to human tongue SCC cell line Tca8113 in vivo.
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LI Si-yi, ZHANG Shang-quan, ZHANG Chen-ping, and CHEN Wan-tao
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DENDRITIC cells ,KILLER cells ,IMMUNOCOMPETENT cells ,LABORATORY mice ,CONTROL groups - Abstract
PURPOSE: To evaluate the anti-tumor effect of co-cultured sensitized dendritic cell (DC) and cytokine-induced killer cell (CIK) separated from peripheral blood to human tongue SCC nude mice cancer model in vivo. METHOD: Both DC and CIK were separated and cultured in vitro from peripheral blood of oral tongue cancer patients. The sensitized DC was co-cultured with CIK. Tca8113 cells were injected into the right oxter of 24 BALB/c nude mice which were divided into control group A, experiment group B and group C. 24 hours later, group A received normal saline injection in one site with Tea 8113 transplantation, group B were injected DC-CIK in opposite side, group C were injected the same dose of DC-CIK in right oxter. The number and size of induced tumors were observed in the next 4 weeks. The data was analyzed with SAS 6.12 software package for student's t test, ANOVA and Chi-square test. RESULTS: The average day of tumor induction was 7.63 days, 9.5 days and 12 days for group A, B and C, respectively, which showed significant difference between group A and C (P=0.0132). Two weeks after Tca8113 injection, 100% of mice in group A developed tumors, 87.5% in B and 62.5% in C developed tumors, which showed no significant difference in 3 groups. The curve of induced tumors size showed that group A developed faster, group C was the slowest with significant difference (P= 0.036). CONCLUSION: The co-cultured sensitized DC-CIK showed a certain anti-tumor effect nude mice with Tea 8113 model in vivo. [ABSTRACT FROM AUTHOR]
- Published
- 2011
32. Centipeda minima extract exerts antineuroinflammatory effects via the inhibition of NF-κB signaling pathway.
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Li, Si-Yi, Zhou, Yi-Le, He, Dan-Hua, Liu, Wei, Fan, Xiang-Zhen, Wang, Qi, Pan, Hua-Feng, Cheng, Yong-Xian, and Liu, Yong-Qiang
- Abstract
Background: Centipeda minima (L.) A.Br. (C. minima) has been used in traditional Chinese herbal medicine to treat nasal allergy, diarrhea, asthma and malaria for centuries. Recent pharmacological studies have demonstrated that the ethanol extract of C. minima (ECM) and several active components possess anti-bacterial, anti-arthritis and anti-inflammatory properties. However, the effects of ECM on neuroinflammation and the underlying mechanisms have never been reported.Purpose: The study aimed to examine the potential inhibitory effects of ECM on neuroinflammation and illustrate the underlying mechanisms.Methods: High performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) was performed to qualify the major components of ECM; BV2 and primary microglial cells were used to examine the anti-inflammatory activity of ECM in vitro. To evaluate the anti-inflammatory effects of ECM in vivo, the mice were orally administrated with ECM (100, 200 mg•kg-1•d-1) for 2 days before cotreatment with LPS (2 mg•kg-1•d-1, ip) for an additional 3 days. The mice were sacrificed the day after the last treatment and the hippocampus was dissected for further experiments. The expression of inflammatory proteins and the activation of microglia were respectively detected by real-time PCR, ELISA, Western blotting and immunofluorescence.Results: HPLC-MS/MS analysis confirmed and quantified seven chemicals in ECM. In BV2 and primary microglial cells, ECM inhibited the LPS-induced production of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), thus protecting HT22 neuronal cells from inflammatory damage. Furthermore, ECM inhibited the LPS-induced activation of NF-κB signaling pathway and subsequently attenuated the induction of inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX2), NADPH oxidase 2 (NOX2) and NADPH oxidase 4 (NOX4), leading to the decreased production of nitrite oxide, prostaglandin E2 (PGE2) and reactive oxygen species (ROS). In an LPS-induced neuroinflammatory mouse model, ECM was found to exert anti-inflammatory activity by decreasing the production of proinflammatory mediators, inhibiting the phosphorylation of NF-κB, and reducing the expression of COX2, iNOS, NOX2 and NOX4 in the hippocampal tissue. Moreover, LPS-induced microglial activation was markedly attenuated in the hippocampus, while ECM at a high dose possesses a stronger anti-inflammatory activity than the positive drug dexamethansone (DEX).Conclusion: These findings demonstrate that ECM exerts antineuroinflammatory effects via attenuating the activation of NF-κB signaling pathway and inhibiting the production of proinflammatory mediators both in vitro and in vivo. C. minima might become a novel phytomedicine to treat neuroinflammatory diseases. [ABSTRACT FROM AUTHOR]- Published
- 2020
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33. Curcumin for gastric cancer: Mechanism prediction via network pharmacology, docking, and in vitro experiments.
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Yang PH, Wei YN, Xiao BJ, Li SY, Li XL, Yang LJ, Pan HF, and Chen GX
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Background: Curcumin originates from the natural herb turmeric, and its antitumor effects have been known about for a long time. However, the mechanism by which curcumin affects gastric cancer (GC) has not been elucidated ., Aim: To elucidate the potential mechanisms of curcumin in the treatment of GC., Methods: Network pharmacological approaches were used to perform network analysis of Curcumin. We first analyzed Lipinski's Rule of Five for the use of Curcumin. Curcumin latent targets were predicted using the PharmMapper, SwissTargetPrediction and DrugBank network databases. GC disease targets were mined through the GeneCard, OMIM, DrugBank and TTD network databases. Then, GO enrichment, KEGG enrichment, protein-protein interaction (PPI), and overall survival analyses were performed. The results were further verified through molecular docking, differential expression analysis and cell experiments., Results: We identified a total of 48 curcumin-related genes with 31 overlapping GC-related targets. The intersection targets between curcumin and GC have been enriched in 81 GO biological processes and 22 significant pathways. Following PPI analysis, 6 hub targets were identified, namely, estrogen receptor 1 ( ESR1 ), epidermal growth factor receptor ( EGFR ), cytochrome P450 family 3 subfamily A member 4 ( CYP3A4 ), mitogen-activated protein kinase 14 ( MAPK14 ), cytochrome P450 family 1 subfamily A member 2 ( CYP1A2 ), and cytochrome p450 family 2 subfamily B member 6 ( CYP2B6 ). These factors are correlated with decreased survival rates among patients diagnosed with GC. Molecular docking analysis further substantiated the strong binding interactions between Curcumin and the hub target genes. The experimental findings demonstrated that curcumin not only effectively inhibits the growth of BGC-823 cells but also suppresses their proliferation. mRNA levels of hub targets CYP3A4 , MAPK14 , CYP1A2 , and CYP2B6 in BGC-823 cells were significantly increased in each dose group., Conclusion: Curcumin can play an anti-GC role through a variety of targets, pathways and biological processes., Competing Interests: Conflict-of-interest statement: The authors declare that there are no conflicts of interest regarding the publication of this paper. The authors affirm that this research is conducted in an unbiased manner and that the findings and conclusions presented are solely based on scientific merit., (©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.)
- Published
- 2024
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34. Effect of complete revascularization in acute coronary syndrome after 75 years old: insights from the BleeMACS registry.
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Wang G, Chen XH, Li SY, Zhang ZK, Gong W, Yan Y, Nie SP, and Henriques JP
- Abstract
Background: The prognostic benefit of complete revascularization in elderly patients (aged over 75 years) with multi-vessel disease and acute coronary syndrome (ACS) is currently unclear. This study aimed to determine the long-term prognostic impact of complete revascularization in this population., Methods: We conducted this study using data obtained from the BleeMACS (Bleeding complications in a Multicenter registry of patients discharged after an Acute Coronary Syndrome) registry, which was carried out from 2003 to 2014. The objective was to categorize older patients diagnosed with ACS into two groups: those who underwent complete revascularization and those who did not. Propensity score matching and the Kaplan-Meier analysis were employed to examine differences in one-year clinical outcomes. The primary endpoint was major adverse cardiovascular event (MACE), which encompassed a combination of all-cause mortality and myocardial infarction., Results: Out of 1263 patients evaluated, 445 patients (35.2%) received complete revascularization. Patients who underwent complete revascularization had a higher prevalence of hypertension and prior percutaneous coronary intervention compared to those who did not. During the one-year follow-up period, complete revascularization was associated with a significantly decreased risk of MACE [13.7% vs. 20.5%, hazard ratio (HR) = 0.63, 95% CI: 0.45-0.88, P = 0.007] and a lower risk of myocardial infarction (5.9% vs. 9.9%, HR = 0.55, 95% CI: 0.33-0.92, P = 0.02). However, it was not linked to a lower risk of all-cause death (9.5% vs. 13.5%, HR = 0.68, 95% CI: 0.45-1.02, P = 0.06). Similar results were observed in the subgroup analysis., Conclusions: Long-term clinical improvements were observed in ACS patients aged over 75 years with multi-vessel disease who achieved complete revascularization. Therefore, adhering to guidelines for complete revascularization should be recommended for elderly patients., (© 2023 JGC All rights reserved; www.jgc301.com.)
- Published
- 2023
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35. Aggressive variant prostate cancer: A case report and literature review.
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Weng XT, Lin WL, Pan QM, Chen TF, Li SY, and Gu CM
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Background: Aggressive variant prostate cancer (AVPC) is a rare disease that progresses rapidly. The first-line treatment for AVPC is currently unknown. We examined a rare case of AVPC with rare brain and bladder metastases. A summary review of the mechanism of development, clinicopathological manifestations, associated treatments and prognosis of this disease is presented., Case Summary: The patient was diagnosed with prostate cancer (PCA), and was actively treated with endocrine therapy, radiotherapy, chemotherapy, and traditional Chinese medicine. Unfortunately, he was insensitive to treatment, and the disease progressed rapidly. He died five years after being diagnosed with PCA., Conclusion: We should reach consensus definitions of the AVPC and other androgen receptor-independent subtypes of PCA and develop new biomarkers to identify groups of high-risk variants. It is crucial to complete a puncture biopsy of the tumor or metastatic lesion as soon as possible in patients with advanced PCA who exhibit clinical features such as low Prostate-specific antigen levels, high carcinoembryonic antigen levels, and insensitivity to hormones to determine the pathological histological type and to create a more aggressive monitoring and treatment regimens., Competing Interests: Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article., (©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.)
- Published
- 2023
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36. Effect of botanical drugs in improving symptoms of hypertensive nephropathy: Analysis of real-world data, retrospective cohort, network, and experimental assessment.
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Huan JM, Ma XT, Li SY, Hu DQ, Chen HY, Wang YM, Su XY, Su WG, and Wang YF
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Background/aim: Hypertensive nephropathy (HN) is a common complication of hypertension. Traditional Chinese medicine has long been used in the clinical treatment of Hypertensive nephropathy. However, botanical drug prescriptions have not been summarized. The purpose of this study is to develop a prescription for improving hypertensive nephropathy, explore the evidence related to clinical application of the prescription, and verify its molecular mechanism of action. Methods: In this study, based on the electronic medical record data on Hypertensive nephropathy, the core botanical drugs and patients' symptoms were mined using the hierarchical network extraction and fast unfolding algorithm, and the protein interaction network between botanical drugs and Hypertensive nephropathy was established. The K-nearest neighbors (KNN) model was used to analyze the clinical and biological characteristics of botanical drug compounds to determine the effective compounds. Hierarchical clustering was used to screen for effective botanical drugs. The clinical efficacy of botanical drugs was verified by a retrospective cohort. Animal experiments were performed at the target and pathway levels to analyze the mechanism. Results: A total of 14 botanical drugs and five symptom communities were obtained from real-world clinical data. In total, 76 effective compounds were obtained using the K-nearest neighbors model, and seven botanical drugs were identified as Gao Shen Formula by hierarchical clustering. Compared with the classical model, the Area under the curve (AUC) value of the K-nearest neighbors model was the best; retrospective cohort verification showed that Gao Shen Formula reduced serum creatinine levels and Chronic kidney disease (CKD) stage [OR = 2.561, 95% CI (1.025-6.406), p < 0.05]. With respect to target and pathway enrichment, Gao Shen Formula acts on inflammatory factors such as TNF-α, IL-1β, and IL-6 and regulates the NF-κB signaling pathway and downstream glucose and lipid metabolic pathways. Conclusion: In the retrospective cohort, we observed that the clinical application of Gao Shen Formula alleviates the decrease in renal function in patients with hypertensive nephropathy. It is speculated that Gao Shen Formula acts by reducing inflammatory reactions, inhibiting renal damage caused by excessive activation of the renin-angiotensin-aldosterone system, and regulating energy metabolism., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Huan, Ma, Li, Hu, Chen, Wang, Su, Su and Wang.)
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- 2023
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37. Mild haemoglobin drop and clinical outcomes in acute coronary syndrome patients: finding from the BleeMACS registry.
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Zhang ZK, Yan Y, Li SY, Raposeiras-Roubín S, Abu-Assi E, Henriques JP, D'Ascenzo F, Saucedo J, Gong W, and Nie SP
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Background: Haemoglobin drop is common in acute coronary syndrome (ACS) patients and correlates with poor prognosis. However, the association between mild haemoglobin drop and adverse clinical outcome remains insufficiently investigated. This study aimed to examine the association between in-hospital haemoglobin drop and risk for adverse clinical outcomes in ACS patients, especially those with mild drop., Methods: Included patients from the BleeMACS (Bleeding complications in a Multicenter registry of patients discharged after an Acute Coronary Syndrome) registry were categorized into three groups by the presence and amount of in-hospital haemoglobin drop (non-drop, mild drop and severe drop). The cut-off point between mild drop and severe drop is ≥ 3 g/dL. Multivariate Cox regression was used to assess the association between haemoglobin drop and major adverse cardiac endpoints (MACE). Patients taking potent P2Y
12 inhibitors were selected for the additional analysis. Propensity score matching was used to avoid selective bias in the additional analysis., Results: Of 6911 patients, 4949 patients (71.6%) experienced in-hospital haemoglobin drop. Compare with non-drop group, patients with haemoglobin drop had higher risk of MACE [adjusted hazard ratio (HR) = 1.36, 95% CI: 1.03-1.80 for mild drop group; adjusted HR = 1.70, 95% CI: 1.07-2.68 for severe drop group]. Patients in mild drop group were less likely to receive potent P2Y12 inhibitors at discharge (mild drop group vs. severe drop group vs. non-drop group: 10.9% vs. 10.7% vs. 23.8%). After propensity score matching adjustment among patients with potent P2Y12 inhibitors, patients in mild drop group were not associated with an increased risk of MACE than those in non-drop group (adjusted HR = 1.52, 95% CI: 0.49-4.72)., Conclusions: In-hospital haemoglobin drop was common in ACS patients and associated with a higher risk for adverse events. Reduced prescription for potent P2Y12 inhibitors may be responsible for poor prognoses among patients with mild haemoglobin drop., (© 2022 JGC All rights reserved; www.jgc301.com.)- Published
- 2022
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38. Using omics approaches to dissect the therapeutic effects of Chinese herbal medicines on gastrointestinal cancers.
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Li SY, Wang WJ, Li QY, Yang PH, Li XL, Yan Y, Yuan Y, Feng YB, and Hong M
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Chinese herbal medicines offer a rich source of anti-cancer drugs. Differences between the pharmacology of Chinese herbal medicines and modern synthetic chemicals hinder the development of drugs derived from herbal products. To address this challenge, novel omics approaches including transcriptomics, proteomics, genomics, metabolomics, and microbiomics have been applied to dissect the pharmacological benefits of Chinese herbal medicines in cancer treatments. Numerous Chinese herbal medicines have shown potential anti-tumor effects on different gastrointestinal (GI) cancers while eliminating the side effects associated with conventional cancer therapies. The present study aimed to provide an overview of recent research focusing on Chinese herbal medicines in GI cancer treatment, based on omics approaches. This review also illustrates the potential utility of omics approaches in herbal-derived drug discovery. Omics approaches can precisely and efficiently reveal the key molecular targets and intracellular interaction networks of Chinese herbal medicines in GI cancer treatment. This study summarizes the application of different omics-based approaches in investigating the effects and mechanisms of Chinese herbal medicines in GI cancers. Future research directions are also proposed for this area of study., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Li, Wang, Li, Yang, Li, Yan, Yuan, Feng and Hong.)
- Published
- 2022
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39. Frequency of ST-segment elevation myocardial infarction, non-ST-segment myocardial infarction, and unstable angina: results from a Southwest Chinese Registry.
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Li SY, Zhou MG, Ye T, Cheng LC, Zhu F, Cui CY, Zhang YM, and Cai L
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- Adult, Angina, Unstable diagnosis, Angina, Unstable epidemiology, Angina, Unstable therapy, Angiotensin Receptor Antagonists, Angiotensin-Converting Enzyme Inhibitors therapeutic use, China epidemiology, Humans, Registries, Retrospective Studies, Treatment Outcome, Acute Coronary Syndrome, Myocardial Infarction, Percutaneous Coronary Intervention adverse effects, ST Elevation Myocardial Infarction diagnosis, ST Elevation Myocardial Infarction epidemiology, ST Elevation Myocardial Infarction therapy
- Abstract
The burden of cardiovascular disease is predicted to escalate in developing countries. The aim of this study is to assess the characteristics, management strategies and outcomes of the patients with acute coronary syndrome (ACS) who were admitted to hospitals under the chest pain center mode in southwest P. R. China. Adults hospitalized with a diagnosis of ACS were enrolled in the retrospective, observational registry between January 2017 and June 2019 at 11 hospitals in Chengdu, P. R. China. The collected data included the patients' baseline characteristics, clinical management and in-hospital outcomes. After Statistical analysis, (1) A total of 2857 patients with ACS, among which 1482 have ST-segment elevation myocardial infarction (STEMI), 681 have non-STEMI (NSTEMI) and 694 have unstable angina (UA) were enrolled in the study. (2) 61.3% of the ACS patients received reperfusion therapy. More patients with STEMI underwent percutaneous coronary intervention (PCI) compared with NSTEMI/UA patients (80.6% vs. 38.8%, P < 0.001), while thrombolytics were administered in only 1.8% of STEMI patients. (3) The median time from symptoms to hospital was 190 min (IQR 94-468) in STEMI, 283 min (IQR 112-1084) in NSTEMI and 337 min (IQR 97-2220) in UA ( P < 0.001), and the door-to-balloon time for primary PCI (pPCI) was 85 min (IQR 55-121) in STEMI. (4) The in-hospital outcomes for STEMI patients included death (8.1%) and acute heart failure (22.6%), while the outcomes for those with NSTEMI and UA were better: death (4.0% and 0.9%, P < 0.001) and acute heart failure (15.3% and 9.9%, P < 0.001). (5) Antiplatelet drugs, lipid-lowering drugs, β-blockers and angiotensin-converting enzyme inhibitors (ACEI) /angiotensin receptor blockers (ARB) were used in about 98.3%, 95.0%, 67.7% and 54.3% of the ACS patients, respectively. Therefore, the management capacity in Chengdu has relatively increased compared with previous studies, but important gaps still exist compared with developed countries, especially regarding the management of the NSTEMI/UA patients., Competing Interests: The authors have no conflicts of interest to declare., (© 2021 The Authors. Published by IMR Press.)
- Published
- 2021
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40. The relationships among self-efficacy, social support, and self-care behavior in the elderly patients with chronic pain (a STROBE-compliant article).
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Li SY
- Subjects
- Aged, Female, Geriatric Assessment, Humans, Male, Surveys and Questionnaires, Chronic Pain psychology, Self Care psychology, Self Efficacy, Social Support
- Abstract
Abstract: The relationships among the self-efficacy, social support and self-care behavior in the elderly patients with chronic pain has not been reported. Therefore, we explored the relationships among self-efficacy, social support and self-care behavior in the elderly patients with chronic pain.General data questionnaire, self-efficacy scale, social support scale and self-care behavior scale were performed in 1032 elderly patients with chronic pain from Shenyang city between February and December 2017. The relationships among self-efficacy, social support and self-care behavior, and self-efficacy as a mediator between the social support and self-care behavior were analyzed by Pearson correlation analysis and Bootstrap method.In these elderly patients with chronic pain, the total scores of the self-efficacy, social support and self-care behavior were 35.59 ± 12.38, 65.64 ± 19.68 and 50.52 ± 15.26, respectively. The self-efficacy was positively correlated with the self-care behavior (r = 0.414, P < .001), the self-efficacy was positively correlated with the social support (r = 0.293, P < .001) and the social support was positively correlated with the self-care behavior (r = 0.322, P < .001). The mediating effect of self-efficacy was 0.121 which accounted for 27.31% of the total effects.The self-efficacy plays a mediating effect between social support and self-care behavior in the elderly patients with chronic pain., Competing Interests: The authors have no funding and conflicts of interest to disclose., (Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2021
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41. The neural system regulates bone homeostasis via mesenchymal stem cells: a translational approach.
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Wang XD, Li SY, Zhang SJ, Gupta A, Zhang CP, and Wang L
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- Animals, Bone and Bones cytology, Humans, Tissue Engineering, Bone Regeneration, Bone and Bones physiology, Homeostasis, Mesenchymal Stem Cell Transplantation methods, Mesenchymal Stem Cells cytology, Osteoporosis therapy, Peripheral Nerves cytology
- Abstract
Large bone reconstruction is a major clinical issue associated with several challenges, and autograft is the main method for reconstructing large defects of maxillofacial bone. However, postoperative osteoporosis of the bone graft, even with sufficient vascularization, remains a primary problem. Therefore, better understanding of the mechanisms and clinical translation of bone homeostasis is required. Neuronal innervation of the bone is an emerging research topic, especially with regards to the role of peripheral nerves in regulating bone homeostasis. Moreover, sensory and autonomic nerves regulate this process via different types of neurotransmitters, but the specific mechanism is still elusive. In this review article, the current understanding of the interaction between the peripheral nerve and the skeleton system is summarized, with a particular focus on bone marrow mesenchymal stem cells (BMMSCs), except for osteoblasts and osteoclasts. The novel application of nerve-based bone regeneration via BMMSCs may provide a new strategy in tissue engineering and clinical treatment of osteoporosis and bone disorders., Competing Interests: Competing Interests: The authors have declared that no competing interest exists., (© The author(s).)
- Published
- 2020
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42. The effect of hydration on the electronic structure and stability of the superalkali cation Li 3 .
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Hou JH, Wu D, Liu JY, Li SY, Yu D, and Li Y
- Abstract
The interaction of the superalkali cation Li3+ with water molecules, as well as the structures and stability of the resulting water complexes are theoretically studied at the MP2/6-311++G(d,p) level. A great number of geometrical configurations were obtained for the Li3+(H2O)n (n = 1-5) complexes and Li3+ is found to have a maximum coordination number of four. Natural population analysis shows that the charge distribution of Li3+ becomes seriously uneven upon interaction with five water molecules, so it loses ring conjugation and splits in the lowest-energy isomer of Li3+(H2O)5. Localized molecular orbital energy decomposition analysis indicates a dominant contribution of electrostatic interactions to the binding of water molecules to Li3+, which is similar to the case of lithium ion hydrates. However, as the number of water ligands reaches five, the contribution of the exchange-repulsion energy exhibits a sharp increase and even exceeds that of the electrostatic term.
- Published
- 2018
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43. Does Alkaline-Earth-Metal-Based Superalkali Exist?
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Liu JY, Xi YJ, Li Y, Li SY, Wu D, and Li ZR
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A series of M
k F2k-1 + (M = Mg, Ca; k = 2, 3) cations have been theoretically investigated to make a new attempt to design superalkali species. As expected, most of these cations were identified as pseudoalkali or even superalkali cations in view of their low electron affinities (EAs). The stability of these cationic clusters is indicated by considerable HOMO-LUMO gaps and positive dissociation energies. More intriguingly, these alkaline-earth-metal-based cations have advantages over alkali-metal-based superalkalis in two aspects: (1) they possess much larger binding energy values; (2) they can keep the chemical stability along with the increasing cluster size. Therefore, it is proposed here that the alkaline-earth-metal atoms could partner with halogens to construct stable cations of low EA value, which may add new candidates to the superalkali family.- Published
- 2016
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