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Shao LH, Zhu L, Wang M, Ning Y, Chen FQ, Gao XQ, Yang CT, Wang HW, Li HL. Mechanisms involved in the HMGB1 modulation of tumor multidrug resistance (Review). Int J Mol Med 2023; 52:69. [PMID: 37387415 PMCID: PMC10373125 DOI: 10.3892/ijmm.2023.5272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 06/22/2023] [Indexed: 07/01/2023] Open
Abstract
Tumor multidrug resistance (MDR) remains one of the most challenging barriers to successful cancer treatment. Several previous studies have suggested that high mobility group box 1 (HMGB1) may be a promising therapeutic target for overcoming cancer drug resistance. Emerging evidence has indicated that HMGB1 functions as a 'double‑edged sword' that plays both pro‑ and anti‑tumor roles in the development and progression of multiple types of cancer. HMGB1 has also been found to be a key regulator of several cell death and signaling pathways, and is involved in MDR by mediating cell autophagy and apoptosis, ferroptosis, pyroptosis and multiple signaling pathways. Additionally, HMGB1 is regulated by a variety of non‑coding RNAs (ncRNAs), such as microRNAs, long ncRNAs and circular RNAs that are involved in MDR. Thus far, studies have been conducted to identify strategies with which to overcome HMGB1‑mediated MDR by the targeted silencing of HMGB1 and the targeted interference of HMGB1 expression using drugs and ncRNAs. Therefore, HMGB1 is closely associated with tumor MDR and is a promising therapeutic target.
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Affiliation(s)
- Li-Hua Shao
- Department of Internal Medicine, First School of Clinical Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, P.R. China
| | - Li Zhu
- Emergency Department, Minda Hospital of Hubei Minzu University, Enshi, Hubei 445000, P.R. China
| | - Meng Wang
- Department of Internal Medicine, First School of Clinical Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, P.R. China
| | - Yue Ning
- Department of Internal Medicine, First School of Clinical Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, P.R. China
| | - Feng-Qin Chen
- Emergency Department, Minda Hospital of Hubei Minzu University, Enshi, Hubei 445000, P.R. China
| | - Xia-Qing Gao
- Department of Internal Medicine, First School of Clinical Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, P.R. China
| | - Chun-Ting Yang
- Department of Internal Medicine, First School of Clinical Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, P.R. China
| | - Hong-Wei Wang
- Department of Clinical Laboratory, Affiliated Hospital of Gansu University of Traditional Chinese Medicine, Lanzhou, Gansu 730050, P.R. China
| | - Hai-Long Li
- Department of Internal Medicine, First School of Clinical Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, P.R. China
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Sun WC, Gao XQ, Fei XY, Wang CC, Li GH, Yan JW, Zhang J, Fei ZM. [Correlation between bioelectrical impedance and nutritional status in neurocritical care patients]. Zhonghua Yi Xue Za Zhi 2023; 103:1787-1792. [PMID: 37305939 DOI: 10.3760/cma.j.cn112137-20221011-02126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To explore the correlation between electrical impedance indicators and commonly used nutritional indicators in neurocritical care patients. Methods: A cross-sectional study was conducted to collect 58 neurocritical care patients in neurosurgery Department of Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine from June to September 2022. Bioelectrical impedance tests were performed after surgery or one week after injury, and nutrition-related biochemical indicators of the patients were collected on the same day, including nutritional status related indicators, inflammation related indicators, anemia related indicators and blood lipid related indicators. The patients were assessed with acute physiology and chronic health evaluation (APACHE) Ⅱ score and sequential organ failure assessment (SOFA) score. Based on the results obtained, the patients were assessed with nutritional score and spearman correlation analysis. The correlations of electrical impedance with nutrition related indicators and nutrition risk related indicators were analyzed. The prediction model of nutritional status was constructed by multi-factor binary logistic regression. Stepwise regression was used to screen electrical impedance indicators related to nutritional status. The receiver operating characteristic (ROC) curve was plotted and the area under the curve (AUC) was calculated to evaluate the predictive ability of the nutritional status prediction model. Results: A total of 58 patients were collected, including 33 males and 25 females, and aged 72.0 (59.0, 81.8) years. Extracellular water (ECW) was positively correlated with interleukin 6 (r=0.529, P<0.001). The edema index [ECW/total body water (TBW)] was negatively correlated with albumin (r=-0.700, P<0.001), hematocrit (r=-0.641, P<0.001) and hemoglobin (r=-0.667, P<0.001). The phase angle was positively correlated with albumin (rRA=0.667, rLA=0.649, rRL=0.669, rLL=0.685, all P<0.001), hematocrit (rRA=0.600, rLA=0.604, rTR=0.565, rRL=0.529, rLL=0.602, all P<0.001) and hemoglobin (rRA=0.626, rLA=0.635, rTR=0.594, rRL=0.624, rLL=0.631, all P<0.001). By stepwise regression screening of predictive factors for nutritional status and incorporating age, gender and white blood cells as confounding factors into the model, the final model was obtained as follows: nutritional status=-0.01×age+1.22×gender-0.12×white blood cells+202.20×ECW/TBW+0.5 torso phase angle -82.16 [The OR value of ECW/TBW: 20.8 (95%CI: 3.7-117.1), P<0.001], with the AUC of 0.921. Conclusion: Bioelectrical impedance indicators have good correlations with commonly used clinical nutritional indicators, and can provide a new method for nutritional evaluation of neurocritical care patients.
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Affiliation(s)
- W C Sun
- Department of Neurosurgery, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China
| | - X Q Gao
- Medical Record Management Office of the Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine,Shanghai 200011,China
| | - X Y Fei
- Department of Nutrition, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China
| | - C C Wang
- Department of Neurosurgery, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China
| | - G H Li
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China
| | - J W Yan
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China
| | - J Zhang
- Neurology Research Institute of Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China
| | - Z M Fei
- Department of Neurosurgery, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine,Shanghai 201203,China
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Wu Y, Feng XL, Chang M, Gao XQ, Li JH, Kong M. [Short-term outcomes of prism treatment in a manner of reducing prism diopters step by step for small-angle acute acquired concomitant esotropia]. Zhonghua Yan Ke Za Zhi 2022; 58:187-193. [PMID: 35280026 DOI: 10.3760/cma.j.cn112142-20210303-00107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the short-term efficacy of the prism treatment in a manner of reducing prism diopters step by step for small-angle acute acquired concomitant esotropia (AACE). Methods: Retrospective case series study. The clinical data of 17 AACE patients with strabismus ≤25 prism degrees (PD) including 6 males and 11 females, aged 14 to 60 years, who underwent the prism treatment in the Strabismus and Pediatric Ophthalmology Clinic of Shanxi Eye Hospital from October 2018 to June 2020 were collected. The prism treatment was conducted by a step-by-step reduction of prism diopters. An under-corrected prism was applied to the patient for the first time, and the degree of the prism was reduced gradually with the decrease in the degree of strabismus. Statistical analysis was performed after 6 months of treatment. The treatment success was defined as obtaining orthotropia and deleting diplopia when prism glasses were weaned off. The strabismus degree, Worth 4 dot test results, near stereopsis (Titmus stereopsis) and synoptophore fusion function before and after treatment were compared, and the factors affecting the curative effect were analyzed. Statistical methods mainly included paired t-test, Wilcoxon rank sum test, the Fisher exact test and univariate logistic regression analysis. Results: Among these 17 patients, 15 had myopia and 2 had emmetropia. Pretherapeutic esodeviation was (13.94±5.83) PD at near (33 cm), and was (15.76±5.24) PD at distance (6 m). After 6 months of treatment, 7 patients were successfully cured. The deviation angle at distance [(10.60±7.16) PD] and near [(9.80±6.00) PD] of the remaining 10 patients at 6 months after prismatic treatment was significantly smaller than that before treatment [(17.50±5.40) PD and (16.10±5.47) PD; t=3.69, 4.10; both P<0.01]. The Titmus stereogram showed that 2 cases had no stereopsis, 6 cases had peripheral stereopsis, 3 cases had macular stereopsis, and 6 cases had foveal stereopsis before treatment. Stereopsis was significantly improved at 6 months after prismatic treatment, with 3 cases havimg macular stereopsis and 14 cases having foveal stereopsis (Z=-2.99; P<0.01). The Worth-4-dot test disclosed that, the number of patients who saw four lamps at distance and near was 0 and 2 before treatment, and 7 and 9 after treatment, respectively, and the difference was statistically significant (both P<0.05). The divergent fusional amplitude and convergent fusional amplitude in the synoptophore at 6 month after treatment was not significantly different from that before treatment (both P>0.05). The efficacy of treatment was not significantly related to the duration from onset to treatment, the pretherapeutic esodeviation, the Titmus stereoacuity, cycloplegic refractive error, and age (all P>0.05). None of the 7 patients, who were successfully cured had a recurrence of esotropia or diplopia during the observation period of 6 to 24 months (median, 11 months). Conclusions: Prism treatment in a manner of step-by-step reduction of prism diopters can significantly diminish the degree of esotropia and improve the binocular function in small-angle AACE. Furthermore, some patients could be cured, achieving orthophoria without diplopia.
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Affiliation(s)
- Y Wu
- Shanxi Eye Hospital, Taiyuan 030002, China
| | - X L Feng
- Shanxi Eye Hospital, Taiyuan 030002, China
| | - M Chang
- Shanxi Eye Hospital, Taiyuan 030002, China
| | - X Q Gao
- Shanxi Eye Hospital, Taiyuan 030002, China
| | - J H Li
- Shanxi Eye Hospital, Taiyuan 030002, China
| | - M Kong
- Shanxi Eye Hospital, Taiyuan 030002, China
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Xu Q, Zhang W, Ma YX, He CN, Zhang LT, Abulitifu Y, Li Y, Wang N, Wang HL, Zhao YY, Gao X, Gao PG, Su XY, Li S, Liu YY, Guo F, Chen ZQ, Liu HL, Gao XQ, Fu JJ, Yu GY, Wang XZ, Wang JP, Zhang YP, Ji FP. [Twelve-week of sofosbuvir/velpatasvir therapeutic regimen for chronic hepatitis C patients in northwest region of China: a real-world multicenter clinical study]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:1046-1052. [PMID: 34933421 DOI: 10.3760/cma.j.cn501113-20201010-00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To study the real-world outcome of China FDA-approved Sofosbuvir (SOF)/Velpatasvir (VEL) in Northwest China. Methods: In this multicenter, prospective, real-world cohort study, we recruited patients from 10 sites from Northwest China, who were chronically infected with HCV GTs 1-6 from 06/2018 to 09/2019. Patients received SOF (400mg)/VEL (100mg) for 12 weeks, and with ribavirin 900-1200 mg for GT3 cirrhosis and for any genotype decompensated cirrhosis. The primary endpoint was sustained virological response at 12-weeks post-treatment (SVR12) and safety. The secondary endpoint was the change of liver function after the achievement of SVR12. Results: Totally, 143 patients were enrolled in the study, four patients were lost to follow-up and one died during the follow-up, 138 patients were included in per-protocol analysis. Of the 138 patients, the mean age 53 years, 53.6% male, 94.2% Han nationality, 53.6% liver cirrhosis, 10.1% HBsAg(+), 6.5% renal dysfunction, 5.1% treatment-experienced, and 16.7% patients received ribavirin treatment. The genotype distribution was as follows: 35.5% GT1, 42.8% GT2, 15.9% GT3, and 5.8% un-typed. The SVR12 rate was 96.5% (138/143, 95%CI: 93.5%-99.6%) for intention-to-treat analysis, and in per-protocol analysis, all 138 patients obtained SVR12 (100%). Compared with baseline, the serum total bilirubin, ALT and AFP levels decreased (all P < 0.05), as well as increased ALB and platelet count (all P < 0.001) at post-treatment 12-weeks. Overall adverse events (AEs) rate is 29.0%, and the most common AEs were anemia (14.5%) and fatigue (8.0%). Severe side effects (edema and fatigue) occurred in 2 patients, one of whom needed a short-term interruption of treatment due to fatigue. Conclusion: In this real-world cohort study, 12-week SOF/VEL regimen with or without ribavirin achieved high SVR12 rates (96.5%-100% overall) with excellent safety profile among patients with HCV GT1/2/3 infection including patients with GT3 and cirrhosis, and led to improvement of liver function.
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Affiliation(s)
- Q Xu
- Hospital of Traditional Chinese Medicine Affiliated to Xinjiang Medical University, Urumqi 830000, China
| | - W Zhang
- Xijing Hospital of Air Force Medical University, Xi'an 710032, China
| | - Y X Ma
- The Fourth People's Hospital of Qinghai Province, Xining 810000, China
| | - C N He
- The Second Affiliated Hospital of Xi'an, Xi'an Jiaotong University, Xi'an 710004, China Shaanxi Provincial Shenmu Hospital, Yulin 719300, China
| | - L T Zhang
- First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Yilihamu Abulitifu
- People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - Y Li
- Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - N Wang
- The Affiliated Xi'an Central Hospital of Xi'an Jiaotong University, Xi'an 710003, China
| | - H L Wang
- The Eighth hospital of Xi'an City, Xi'an 710061, China
| | - Y Y Zhao
- The Second Affiliated Hospital of Xi'an, Xi'an Jiaotong University, Xi'an 710004, China
| | - X Gao
- The Second Affiliated Hospital of Xi'an, Xi'an Jiaotong University, Xi'an 710004, China
| | - P G Gao
- The Second Affiliated Hospital of Xi'an, Xi'an Jiaotong University, Xi'an 710004, China
| | - X Y Su
- The Second Affiliated Hospital of Xi'an, Xi'an Jiaotong University, Xi'an 710004, China
| | - S Li
- Shaanxi Provincial Centre for Disease Control and Prevention, Xi'an 710054, China
| | - Y Y Liu
- The Affiliated Xi'an Central Hospital of Xi'an Jiaotong University, Xi'an 710003, China
| | - F Guo
- Hospital of Traditional Chinese Medicine Affiliated to Xinjiang Medical University, Urumqi 830000, China
| | - Z Q Chen
- Xijing Hospital of Air Force Medical University, Xi'an 710032, China
| | - H L Liu
- Central Hospital of Xianyang City, Xianyang 712000, China
| | - X Q Gao
- The Fourth People's Hospital of Qinghai Province, Xining 810000, China
| | - J J Fu
- The Affiliated Xi'an Central Hospital of Xi'an Jiaotong University, Xi'an 710003, China
| | - G Y Yu
- The Fourth People's Hospital of Qinghai Province, Xining 810000, China
| | - X Z Wang
- Hospital of Traditional Chinese Medicine Affiliated to Xinjiang Medical University, Urumqi 830000, China
| | - J P Wang
- Xijing Hospital of Air Force Medical University, Xi'an 710032, China
| | - Y P Zhang
- People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - F P Ji
- The Second Affiliated Hospital of Xi'an, Xi'an Jiaotong University, Xi'an 710004, China National & Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, the Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China Shaanxi Provincial Clinical Medical Research Center of Infectious Diseases, Xi'an 710049, China
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Deng HY, Gao XQ, Guo YF. [Operative technique and follow-up effect of endoscopic congenital choanal atresia and dilatation]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:367-370. [PMID: 30970412 DOI: 10.13201/j.issn.1001-1781.2019.04.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Indexed: 11/12/2022]
Abstract
Objective:To discuss the operative technique and follow-up effect of endoscopic dilatation and plasty for congenital choanal atresia in infants. Method:Clinical data of 7 children with congenital choanal atresia operative treatmented during September 2016 to January 2018 were analyzed retrospectively. the follow-up were followed closely and analyz the operative effect. Result: Seven cases were diagnosed by electronic nasopharyngoscope, nasal CT confirm the nature of atresia plate, and all 7 case successfully complete the operation. Follow-up survey ranged from 8 months to 23 months, postoperative nasal ventilation is good. The first case of bilateral choanal atresia was removed the nasal stenting after operative 3 months, and founded stenosis 1 month later. Reoperation to enlarge the choanal and retained the nasal stenting for 6 months, no restenosis or atresia after 15 months of follow-up. One patient gave up further treatment because of his own reasons and was lost to follow-up. The other 5 cases had no obvious constriction, good ventilation and no operative complications.Conclusion:Electronic nasopharyngoscope is noninvasive, convenient and accurate in the diagnosis of choanal atresia. Nasal CT confirm the nature of the atresia plate. Endoscopic dilatation and plasty of choanal atresia should be retained the nasal stenting for more than 6 months, avoid re-constriction. .
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Guo YF, Shan YM, Cai HK, Chen XM, Gao XQ. [Simulation of inferior turbinate reduction using computational fluid dynamics methods]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 31:257-261. [PMID: 29871238 DOI: 10.13201/j.issn.1001-1781.2017.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Indexed: 11/12/2022]
Abstract
Objective:Two computational fluid dynamic (CFD) models of unilateral inferior turbinate reductions (ITR) were constructed and investigate the influences of aerodynamic consequences.Method:A unilateral hypertrophic inferior turbinate CFD model wasestablished. Two kinds of methods in removing of tissue bulk along the length of the hypertrophic inferior turbinate were used,and we got the model B and the model C. Nasal airflow distribution were computed before and after simulated unilateral inferior turbinate reduction in use of Fluent 6.3.26.Result:Simulated two kinds of ITR resulted in enlargement in the cross-section area of inferior nasal meatus, 0.36 cm² of the model B and 0.89 cm² of the model C in average. Model C produced a less reduction in intranasal pressures (approximately 3 Pa) than the model B and the original model which are the same as approximately 8 Pa. More air was predicted to flow in the affected nasal passage in the model C (approximately 80 ml/s) than the model B and the original model. Airspeed in the anterior valve region was improved significantly and more vortices happened in the model C.Conclusion:The model C is significantly better than the model B in restoring normal anatomy and ventilation physiological of the nasal cavity. So, in ITR recoverying normal anatomy structure of the nasal has decisive significance.
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Affiliation(s)
- Y F Guo
- Department of Otolaryngology, Xiamen Children's Hospital, Xiamen, 361000, China
| | - Y M Shan
- Department of Otolaryngology, Ruijin Hospital, Shanghai Jiaotong University, School of Medicine
| | - H K Cai
- School of Physics and Mechanical and Electrical Engineering, Xiamen University
| | - X M Chen
- Department of Otolaryngology, Ruijin Hospital, Shanghai Jiaotong University, School of Medicine
| | - X Q Gao
- Department of Otolaryngology, Xiamen Children's Hospital, Xiamen, 361000, China
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Gao XQ, Li Y, Jiang ZL. Comparison of Secondary Prevention Status between Percutaneous Coronary Intervention and Coronary Artery Bypass Patients. Arq Bras Cardiol 2017; 109:466-474. [PMID: 29267627 PMCID: PMC5729783 DOI: 10.5935/abc.20170153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 06/13/2017] [Indexed: 11/25/2022] Open
Abstract
Background Data are scarce regarding disparities in cardiovascular risk factor
management between patients treated with percutaneous coronary intervention
(PCI) and those treated with coronary artery bypass grafting (CABG). Objective Whether the goal achievement rates of cardiovascular risk factors were
different between PCI and CABG patients. Methods We retrospectively reviewed the data retrieved from a clinical record
database of patients admitted to Beijing Anzhen Hospital between January 1,
2014, and December 31, 2014, who underwent PCI or CABG. Results Compared with the CABG group, low-density lipoprotein cholesterol (LDL-C)
< 1.8 mmol/L (28.6% vs. 24.7%; p < 0.01), LDL-C < 2.07 mmol/L
(43.5% vs. 39.4%; p < 0.01) and blood pressure (BP) < 140/90 mm Hg
(85.6% vs. 77.7%; p < 0.01) goal achievement rates were significantly
higher in the PCI group. Compared with patients ≥ 60 years old:
patients < 60 years old had better BP < 140/90 mm Hg goal achievement
rates (87.7% vs. 84.4%; p < 0.01) in the PCI group, and better fasting
blood-glucose (FBG) < 7 mmol/L (79.4% vs.72.0%; p < 0.01) and HbA1c
< 7% (79.4% vs. 70.1%; p < 0.01) goal achievement rates in the CABG
group. Compared with females: males had better LDL-C < 2.07 mmol/L (24.7%
vs. 28.5%; p < 0.01), FBG < 7 mmol/L (71.8% vs.75.2%; p < 0.01) and
HbA1c < 7% (70.4% vs. 74.1%; p < 0.01) goal achievement rates in the
PCI group. Conclusion Patients in the PCI group were generally more likely than those in the CABG
group to achieve LDL-C < 1.8 mmol/L and BP goals. The control of
cardiovascular risk factors differed between patients ≥ 60 years old
and < 60 years old. Female patients were less likely to achieve LDL-C,
FBG and HbA1c goals.
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Affiliation(s)
- Xia-Qing Gao
- Beijing Anzhen Hospital - Capital Medical University, Beijing - China.,Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing - China
| | - Yanfang Li
- Beijing Anzhen Hospital - Capital Medical University, Beijing - China.,Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing - China
| | - Zhi-Li Jiang
- Beijing Anzhen Hospital - Capital Medical University, Beijing - China.,Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing - China
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Gao XQ, Li YF, Jiang ZL. β 3-Adrenoceptor activation upregulates apolipoprotein A-I expression in HepG2 cells, which might further promote cholesterol efflux from macrophage foam cells. Drug Des Devel Ther 2017; 11:617-627. [PMID: 28424539 PMCID: PMC5344441 DOI: 10.2147/dddt.s130088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Objective The aim of this study was to explore the effects of β3-adrenoceptor (β3-AR) activation on HepG2 cells and its influence on cholesterol efflux from macrophage foam cells. Materials and methods HepG2 cells were cultured and treated with the β3-AR agonist, BRL37344, and antagonist, SR52390A, and the expression of apolipoprotein (Apo) A-I, ApoA-II, ApoB, and β3-AR in the supernatants and cells was determined. The expression of peroxisome proliferator-activated receptor (PPAR) γ and PPARα in the HepG2 cells was also assessed. Next, using the RAW264.7 macrophage foam cell model, we also assessed the influence of the HepG2 cell supernatants on lipid efflux. The cholesterol content of the foam cells was also measured, and the cholesterol efflux from the macrophages was examined by determining 3H-labeled cholesterol levels. Expression of ATP-binding cassette transporter (ABC) A1 and ABCG1 of the macrophage foam cells was also assessed. Results β3-AR activation increased ApoA-I expression in both the HepG2 cells and the supernatants; PPARγ expression was upregulated, but PPARα expression was not. Treatment with GW9662 abolished the increased expression of ApoA-I induced by the β3-AR agonist. The HepG2 cell supernatants decreased the lipid accumulation and increased the cholesterol efflux from the macrophage foam cells. ABCA1 expression, but not ABCG1 expression, increased in the macrophage foam cells treated with BRL37344-treated HepG2 cell supernatants. Conclusion Activation of β3-AR in HepG2 cells upregulates ApoA-I expression, which might further promote cholesterol efflux from macrophage foam cells. PPARγ might be required for the induction of ApoA-I expression.
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Affiliation(s)
- Xia-Qing Gao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University.,Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Yan-Fang Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University.,Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, People's Republic of China
| | - Zhi-Li Jiang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University.,Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, People's Republic of China
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Wang B, Shang BS, Gao XQ, Wang WH, Bai HY, Pan MX, Guan PF. Understanding Atomic-Scale Features of Low Temperature-Relaxation Dynamics in Metallic Glasses. J Phys Chem Lett 2016; 7:4945-4950. [PMID: 27934059 DOI: 10.1021/acs.jpclett.6b02466] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Being a key feature of a glassy state, low temperature relaxation has important implications on the mechanical behavior of glasses; however, the mechanism of low temperature relaxation is still an open issue, which has been debated for decades. By systematically investigating the influences of cooling rate and pressure on low temperature relaxation in the Zr50Cu50 metallic glasses, it is found that even though pressure does induce pronounced local structural change, the low temperature-relaxation behavior of the metallic glass is affected mainly by cooling rate, not by pressure. According to the atomic displacement and connection mode analysis, we further demonstrate that the low temperature relaxation is dominated by the dispersion degree of fast dynamic atoms rather than the most probable atomic nonaffine displacement. Our finding provides the direct atomic-level evidence that the intrinsic heterogeneity is the key factor that determines the low temperature-relaxation behavior of the metallic glasses.
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Affiliation(s)
- B Wang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100094, China
| | - B S Shang
- Beijing Computational Science Research Center , Beijing 100094, China
| | - X Q Gao
- Northwest Institute for Nonferrous Metal Research , Xian 710016, China
| | - W H Wang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - H Y Bai
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - M X Pan
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100094, China
| | - P F Guan
- Beijing Computational Science Research Center , Beijing 100094, China
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Zhu ZG, Li YZ, Wang Z, Gao XQ, Wen P, Bai HY, Ngai KL, Wang WH. Compositional origin of unusual β-relaxation properties in La-Ni-Al metallic glasses. J Chem Phys 2015; 141:084506. [PMID: 25173020 DOI: 10.1063/1.4893954] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The β-relaxation of metallic glasses (MGs) bears nontrivial connections to their microscopic and macroscopic properties. In an effort to elucidate the mechanism of the β-relaxation, we studied by dynamical mechanical measurements the change of its properties on varying the composition of La60Ni15Al25 in various ways. The properties of the β-relaxation turn out to be very sensitive to the composition. It is found that the isochronal loss peak temperature of β-relaxation, Tβ,peak, is effectively determined by the total (La + Ni) content. When Cu is added into the alloy to replace either La, Ni, or Al, the Tβ,peak increases with decrease of the (La + Ni) content. The trend is in accordance with data of binary and ternary MGs formed from La, Ni, Al, and Cu. Binary La-Ni MGs have pronounced β-relaxation loss peaks, well separated from the α-relaxation. In contrast, the β-relaxation is not resolved in La-Al and La-Cu MGs, showing up as an excess wing. For the ternary La-Ni-Al MGs, increase of La or Ni content is crucial to lower the Tβ,peak. Keeping the Al content fixed, increase of La content lowers the Tβ,peak further, indicating the more important role La plays in lowering Tβ,peak than Ni. The observed effects on changing the composition of La60Ni15Al25 lead to the conclusion that the properties of the β-relaxation are mainly determined by the interaction between the largest solvent element, La, and the smallest element, Ni. From our data, it is further deduced that La and Ni have high mobility in the MGs, and this explains why the β-relaxation in this La-based MGs is prominent and well resolved from the α-relaxation as opposed to Pd- and Zr-based MGs where the solvent and largest atoms, Pd and Zr, are the least mobile.
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Affiliation(s)
- Z G Zhu
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Y Z Li
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Z Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - X Q Gao
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - P Wen
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - H Y Bai
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - K L Ngai
- Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - W H Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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Xu XW, Gao XQ, Feng JX, Wang XD, Wei DZ. Influence of temperature on nucleus degradation of 4-androstene-3, 17-dione in phytosterol biotransformation by Mycobacterium sp. Lett Appl Microbiol 2015; 61:63-8. [PMID: 25868395 DOI: 10.1111/lam.12428] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/27/2015] [Accepted: 04/04/2015] [Indexed: 01/18/2023]
Abstract
UNLABELLED One of the steroid intermediates, 4-androstene-3, 17-dione (AD), in the biotransformation of phytosterols is valuable for the production of steroid medicaments. However, its degradation during the conversion process is one of the main obstacles to obtain high yields. In this study, the effect of temperature on nucleus degradation during microbial biotransformation of phytosterol was investigated. The results indicated that microbial degradation of phytosterol followed the AD-ADD-'9-OH-ADD' pathway, and that two important reactions involved in nucleus degradation, conversions of AD to ADD and ADD to 9-OH-ADD, were inhibited at 37°C. With a change in the culture temperature from 30 to 37°C, nucleus degradation was reduced from 39·9% to 17·6%, due to inhibition of the putative KstD and Ksh. These results suggested a simple way to decrease the nucleus degradation in phytosterol biotransformation and a new perspective on the possibilities of modifying the metabolism of strains used in industrial applications. SIGNIFICANCE AND IMPACT OF THE STUDY Nucleus degradation of products is one of the main problems encountered during phytosterol biotransformation. To solve this problem, the effect of temperature on nucleus degradation was investigated in the industrial production of steroid intermediates. The results are also helpful to the genetic modification of sterol-producing strains.
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Affiliation(s)
- X W Xu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - X Q Gao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - J X Feng
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - X D Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - D Z Wei
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
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Wang XL, Gao XQ. [The ultrastructural study of synergids before and after fertilization in watermelon embryo sacs]. Shi Yan Sheng Wu Xue Bao 2001; 34:307-12. [PMID: 12549210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
The ultrastructure of synergids of watermelon (Citrullus Lanatus L.) was investigated using transmission electron microscopy at following stages of embryo sacs: 1. Unpollination, on the first flowering day. 2. Unpollination, on 2nd day after anthesis (DAA). 3. Fertilization, on DAA 2. The synergids with distinct filiform apparatus at the micropylar end have abundant organelle, such as mitochondria, endoplasmic reticulum, and plastids in cytoplasm, which indicate that they are active on the first flowering day. No wall is present at the chalazal part of synergid, and there are some flocculent materials and vesicles in the spaces of cytoplasma membranes among synergid, egg cell and central cell in embryo sacs at the first and the second stages. On DAA 2, in unpollinated embryo sacs, the central large vacuole of synergid is divided into several smaller ones and the starch grains decrease in cytoplasm. There is no newly synthesized wall at the chalazal end of persistent synergid in fertilized embryo sacs. The contents of degenerated synergid, in the form of electron dense granules, are located in the wide space among central cell, zygote and persistent synergid, and some of them migrate into central cell through cytoplasma membrane. Therefore, it is deduced that the contents of synergid might serve as a nutrient supplement to the development of endosperm, but not embryo.
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Affiliation(s)
- X L Wang
- Department of Biology, Qufu Normal University, Shandong 273165
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Abstract
To investigate the variations of active compounds between species, varieties and individuals of Valeriana cultivated under the same environmental condition, the contents of valerenic acid derivatives and valepotriates in rhizomes and roots of different plant material were analysed by a HPLC method. Different species or varieties of Valeriana yielded 11.65-0.15 mg/g of valerenic acid derivatives, and 1.81-0.03 mg/g of valepotriates. The variation between individuals of one commercial cultivar of V. officinalis ranged from 12.34 to 3.01 mg/g of valerenic acid derivatives, and 3.67-0.92 mg/g of valepotriates. Individuals from self-pollinated mother plants, normal or regenerated, showed a similar variation. The variation of micropropagated plants was much less than the seed propagated plants. The ratio of mean values between valerenic acid derivatives and valepotriates was similar in all groups (3 < ratio < 8) except one group of micropropagated plants (ratio > 20).
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Affiliation(s)
- X Q Gao
- Department of Horticultural Plant Breeding, Swedish University of Agricultural Sciences, Fjäłkestadsv 123-1, S-291 94 Kristianstad, Sweden.
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Gao XQ, Duanmu CJ, Zou CR. A multilevel successive elimination algorithm for block matching motion estimation. IEEE Trans Image Process 2000; 9:501-504. [PMID: 18255420 DOI: 10.1109/83.826786] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
An efficient algorithm is proposed to reduce the computation cost of block matching algorithms for motion estimation in video coding. Based on a new insight in block matching algorithms, we extend the successive elimination algorithm to a multilevel case. By using the sum norms of the blocks and the subblocks, tighter and tighter decision boundaries can be obtained for eliminating the search positions. The efficiency of the proposed algorithm combined with the full search algorithm and several fast search algorithms is verified by simulation results.
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Affiliation(s)
- X Q Gao
- Department of Radio Engineering, Southeast University, Nanjing 210096, China.
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Gao XQ, Zhang WD, Qiao CB. [Effects of dimethylformamide on the monocytophagocytic system of rodents]. Zhonghua Yu Fang Yi Xue Za Zhi 1994; 28:13-5. [PMID: 8082452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The effects of Dimethylformamide (DMF) on monocytophagocytic system (MPS) of rodents were studied. The results showed large dose of DMF (1/20 LD50) with oral administration could significantly inhibit the functions of colloidal carbon clearance of MPS in Wistar rats, and of non-specific phagocytosis of sheep red blood cells (SRBC) by peritoneal macrophage in Kunming mice, and could also lowered significantly the levels of Fc and C3b receptors on the surface of peritoneal macrophage in mice. This showed DMF could cause obvious damage to MPS.
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Affiliation(s)
- X Q Gao
- Institute of Labor Hygiene and Occupational Diseases Shandong Academy of Medical Sciences, Ji'nan
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Abstract
Motorized linear slides used as micromanipulators for biological use suffer from 3 problems: vibration at low speed, poor ergonomic design of the controller and slow coarse positioning. These problems are not hard to solve by minor modifications to the controller and the slides.
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Affiliation(s)
- X Q Gao
- Department of Biophysical Sciences, SUNY, Buffalo 14214
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Gao XQ, Liu LX, Liu DH. The use of Chinese herbs in abdominal surgery in obstetrics and gynaecology. Ulster Med J 1984; 53:125-7. [PMID: 6531827 PMCID: PMC2447939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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