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Guo LX, Li MH. [Perioperative radiotherapy on local-advanced gastric cancer--From the perspective of failure pattern]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:807-811. [PMID: 37574301 DOI: 10.3760/cma.j.cn441530-20221107-00455] [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: 08/15/2023]
Abstract
Distant metastasis, peritoneal recurrence and locoregional recurrence are the three major patterns of gastric cancer (GC) recurrence after surgery and the causes of patients'death. Among them, distant organ metastasis or peritoneal recurrence after surgery is more common and occurs earlier, while locoregional failure alone occurs later with a relatively lower incidence. Several studies have confirmed that preoperative radiotherapy can shrink tumors and increase R0 resection rates, and postoperative radiotherapy helps reduce local recurrence. However, whether perioperative radiotherapy can further improve patient survival is still controversial.. We believe that this is partly due to the characteristics of recurrence and metastasis. As a local treatment, radiotherapy is complement to the inadequacy of surgery. Thus, we believe that perioperative radiotherapy is not recommended for patients with standard R0 surgery and adequate lymph node dissection, but rather requires accurate prediction of their recurrence and metastasis patterns based on accurate clinical and pathological staging, and thus screening of those who may benefit from radiotherapy.
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Affiliation(s)
- L X Guo
- Department of Radiation Oncology, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Cancer Hospital and Institute, Jinan 250117, China
| | - M H Li
- Department of Radiation Oncology, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Cancer Hospital and Institute, Jinan 250117, China
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2
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Deng MQ, Pan Q, Xiao XH, Guo LX. [Interpretations of guideline for the management of diabetes mellitus in the elderly in China (2021 edition)]. Zhonghua Nei Ke Za Zhi 2021; 60:954-959. [PMID: 34689515 DOI: 10.3760/cma.j.cn112138-20210305-00183] [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: 11/05/2022]
Abstract
Elderly diabetic patients in China accounts for one fourth of the total number of elderly diabetic patients in the world, ranking the first worldwide. In 2021, National Center of Gerontology, Chinese Society of Geriatrics and Diabetes Professional Committee of Chinese Aging Well Association issued China's first guideline on elderly diabetic patients--Guideline for the management of diabetes mellitus in the elderly in China (2021 edition). The present article interprets parts of the important recommendations of the guideline, aiming to facilitate its implementation in clinical practice effectively and improve the clinical prognosis of elderly diabetic patients in our country.
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Affiliation(s)
- M Q Deng
- Department of Endocrinology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Q Pan
- Department of Endocrinology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X H Xiao
- Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L X Guo
- Department of Endocrinology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
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Gou CQ, Guo LX, Zhang C, Xie LY, Li XX, Sun LH. The Affection of Temporal Factors on Acupuncture for Insomnia after Stroke: A Systematic Review and Meta-Analysis. ACUPUNCTURE ELECTRO 2021. [DOI: 10.3727/036012921x16237619666021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Objective<br/> The aim of this systematic review and meta-analysis was to analyze the affection of temporal factors on acupuncture for insomnia after stroke.<br/> Methods<br/> Eight databases were searched from inception through September 2019 without
language restrictions. Randomized controlled trials (RCTs) were included if pure acupuncture was compared to Western medicine for the treatment of insomnia after stroke.<br/> Results<br/> Thirty-two studies involving a total of 2347 participants were included. Comparing
to Western medicine, the subgroup analysis showed there was no statistical significance among 9-12 am, 3-6 pm, and 2 hours before sleep to start the acupuncture for post-stroke insomnia on improving the effective rate (P=0.66) or the sleep quality (P=0.95). The cumulative meta-analysis showed
that with the amount of treatment increased, the confidence interval was narrowed and the accuracy of the effect value was improved gradually.<br/> Conclusions<br/> The results of this study showed that acupuncture therapy was performed 2 hours before sleep, the insomnia
could be improved by calming the mind and inducing the Yang into the Yin based on the theory of midnight-midday ebb flow. The most commonly used needle retention time of 30 minutes was effective in clinical, and with the amount of stimulation increases, the therapeutic effect of acupuncture
could be sustained and stable. Since the overall risk of bias was evaluated as unclear, application of these conclusions needs to be cautious.
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Yu DN, Zou MZ, Li M, Song Y, Pan Q, Guo LX. [Using energy spectrum CT to evaluate the characteristics of adult abdominal fat distribution and analyze its influencing factors]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:909-913. [PMID: 34814487 DOI: 10.3760/cma.j.cn112338-20210205-00101] [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: 06/13/2023]
Abstract
Objective: To evaluate the characteristics of adult abdominal fat distribution and analyze its influencing factors by energy spectrum CT scan. Methods: The body height, weight, waist circumference, and hip circumference of 105 adults were measured, and the characteristics of abdominal fat distribution were evaluated by energy spectrum CT scan. Results: Compared with non-obese individuals, the contents of abdominal subcutaneous fat, abdominal cavity and liver ectopic fat were higher in obese patients (P<0.05), and the intramuscular fat (IMAT) content did not increase with the increase of BMI. In middle-aged group, the waist circumference, waist-to-hip ratio (WHR) abdominal cavity area and IMAT content were higher than those in the youth group, and the muscle content of the middle-aged group was lower than that of the youth group, the difference between the two groups was significant (P<0.05); the male group had higher abdominal cavity area and muscle content than the female group, while the female group had higher the subcutaneous fat area, abdominal subcutaneous fat thickness and erector spinae fat content than the male group, the differences were significant (P<0.05). Conclusions: The characteristics of abdominal fat distribution of subjects with different BMI, age and gender were different. Therefore, we should pay attention to the individual assessment of ectopic fat distribution in obese patients. Energy spectrum CT can be used as an important approach for the assessment of ectopic fat to provide evidence for developing individualized weight loss programs.
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Affiliation(s)
- D N Yu
- Department of Endocrinology/Department of Radiology, Beijing Hospital,National Center of Gerontology,Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China Graduate School of Peking Union Medical College, Beijing 100005, China
| | - M Z Zou
- Department of Endocrinology/Department of Radiology, Beijing Hospital,National Center of Gerontology,Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - M Li
- Department of Endocrinology/Department of Radiology, Beijing Hospital,National Center of Gerontology,Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y Song
- Department of Endocrinology/Department of Radiology, Beijing Hospital,National Center of Gerontology,Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Q Pan
- Department of Endocrinology/Department of Radiology, Beijing Hospital,National Center of Gerontology,Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L X Guo
- Department of Endocrinology/Department of Radiology, Beijing Hospital,National Center of Gerontology,Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China Graduate School of Peking Union Medical College, Beijing 100005, China
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Bai Y, Lin XH, Zhu JH, Cui SH, Guo LX, Yan SF, Wang W, Xu J, Li FQ. Quantification of Cross-Contamination of Campylobacter jejuni during Food Preparation in a Model Kitchen in China. J Food Prot 2021; 84:850-856. [PMID: 33232459 DOI: 10.4315/jfp-20-280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 07/20/2020] [Accepted: 11/20/2020] [Indexed: 11/11/2022]
Abstract
ABSTRACT Numerous outbreak investigations and case-control studies of campylobacteriosis have provided evidence that handling Campylobacter-contaminated chicken products is a high risk factor for infection and illness. In this study, the cross-contamination and transfer rates of Campylobacter jejuni from chicken to ready-to-eat food were determined in various food handling scenarios. Skinless raw chicken breasts were artificially contaminated with C. jejuni and diced on cutting boards of three different materials. Whether cold water, cold water with detergent, or hot water was used, statistically significant differences were found between the transfer rates of C. jejuni to unwashed and washed cutting boards or hands, respectively. When both kitchen knife and cutting board were reused after dicing the artificially contaminated chicken, the transfer rates of C. jejuni to cucumber cut on bamboo, wooden, and plastic cutting boards were 16.28, 12.82, and 5.32%, respectively. The transfer rates from chicken to bread, a large lift-up water faucet handle, and a small twist faucet handle via unwashed hands were 0.49, 4.64, and 3.14%, respectively. This research provides scientific evidence that various types of contaminated kitchenware and cook's hands are vital potential vehicles for the cross-contamination of Campylobacter from raw chicken to ready-to-eat food and emphasizes the importance of timely and proper cleaning to prevent cross-contamination during food handling; therefore, high-quality consumer education to reduce the risk of foodborne infection is urgent and necessary. HIGHLIGHTS
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Affiliation(s)
- Yao Bai
- China National Center for Food Safety Risk Assessment (CFSA), No. 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, People's Republic of China
| | - Xiao-Hui Lin
- Sanitary Inspection Institute, Tianjin Center for Disease Control and Prevention, No. 6 Huayue Road, Hedong District, Tianjin 300011, People's Republic of China
| | - Jiang-Hui Zhu
- China National Center for Food Safety Risk Assessment (CFSA), No. 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, People's Republic of China
| | - Sheng-Hui Cui
- China National Institutes for Food and Drug Control, No. 2 Tiantan Xili, Dongcheng District, Beijing 100022, People's Republic of China
| | - Li-Xia Guo
- China National Center for Food Safety Risk Assessment (CFSA), No. 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, People's Republic of China
| | - Shao-Fei Yan
- China National Center for Food Safety Risk Assessment (CFSA), No. 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, People's Republic of China
| | - Wei Wang
- China National Center for Food Safety Risk Assessment (CFSA), No. 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, People's Republic of China
| | - Jin Xu
- China National Center for Food Safety Risk Assessment (CFSA), No. 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, People's Republic of China
| | - Feng-Qin Li
- China National Center for Food Safety Risk Assessment (CFSA), No. 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, People's Republic of China
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Zhu YT, Zhang YF, Jiang JF, Yang Y, Guo LX, Bao JJ, Zhong DF. Effects of rifampicin on the pharmacokinetics of alflutinib, a selective third-generation EGFR kinase inhibitor, and its metabolite AST5902 in healthy volunteers. Invest New Drugs 2021; 39:1011-1018. [PMID: 33506323 DOI: 10.1007/s10637-021-01071-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/23/2020] [Accepted: 01/19/2021] [Indexed: 01/11/2023]
Abstract
Background Alflutinib is a novel irreversible and highly selective third-generation EGFR inhibitor currently being developed for the treatment of non-small cell lung cancer patients with activating EGFR mutations and EGFR T790M drug-resistant mutation. Alflutinib is mainly metabolized via CYP3A4 to form its active metabolite AST5902. Both alflutinib and AST5902 contribute to the in vivo pharmacological activity. The aim of this study was to investigate the effects of rifampicin (a strong CYP3A4 inducer) on the pharmacokinetics of alflutinib and AST5902 in healthy volunteers, thus providing important information for drug-drug interaction evaluation and guiding clinical usage. Methods This study was designed as a single-center, open-label, and single-sequence trial over two periods. The volunteers received a single dose of 80 mg alflutinib on Day 1/22 and continuous doses of 0.6 g rifampicin on Day 15-30. Blood sampling was conducted on Day 1-10 and Day 22-31. The pharmacokinetics of alflutinib, AST5902, and the total active ingredients (alflutinib and AST5902) with or without rifampicin co-administration were respectively analyzed. Results Co-administration with rifampicin led to 86% and 60% decreases in alflutinib AUC0-∞ and Cmax, respectively, as well as 17% decrease in AST5902 AUC0-∞ and 1.09-fold increase in AST5902 Cmax. The total active ingredients (alflutinib and AST5902) exhibited 62% and 39% decreases in AUC0-∞ and Cmax, respectively. Conclusions As a strong CYP3A4 inducer, rifampicin exerted significant effects on the pharmacokinetics of alflutinib and the total active ingredients (alflutinib and AST5902). The results suggested that concomitant strong CYP3A4 inducers should be avoided during alflutinib treatment. This trial was registered at http://www.chinadrugtrials.org.cn . The registration No. is CTR20191562, and the date of registration is 2019-09-12.
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Affiliation(s)
- Yun-Ting Zhu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, People's Republic of China
| | - Yi-Fan Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, People's Republic of China.
| | - Jin-Fang Jiang
- HQ Bioscience Co., LTD, Suzhou, People's Republic of China
| | - Yong Yang
- HQ Bioscience Co., LTD, Suzhou, People's Republic of China
| | - Li-Xia Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, People's Republic of China
| | - Jing-Jing Bao
- Shanghai Allist Pharmaceuticals Co., Ltd, Shanghai, People's Republic of China
| | - Da-Fang Zhong
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, People's Republic of China.
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Zheng YM, Guo LX, Li YH, Guan XX, Guan L, Zhang YL, Li SQ, Zhao ZM. [Investigation of the relationship between occupational gasoline exposure and metabolic syndrome]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:823-826. [PMID: 33287474 DOI: 10.3760/cma.j.cn121094-20191010-00482] [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] [Indexed: 11/05/2022]
Abstract
Objective: To explore the correlation between occupational gasoline exposure and metabolic syndrome (MS) . Methods: In September 2019, a total of 147 occupational gasoline exposure workers from a oil sales company in Beijing were selected as the observation group by using cluster sampling method, 158 people without gasoline exposure from the company were selected as the control group. Occupational health examination were performed to measure body mass, blood pressure and fasting plasma glucose (FPG) , triglycerides (TG) , high-density lipoprotein cholesterol (HDL-C) and other data. General demographic characteristics, occupational history, past medical history and personal history were analyzed either. Results: The levels of systolic blood pressure, diastolic blood pressure, FPG, TG and BMI in the observation group were all higher than those in the control group (P<0.05) . The detection rates of MS, obesity and hypertension in the observation group were all higher than those in the control group (P<0.05) . There were no significant differences in age, gender, working age, drinking, smoking, marital status, HDL-C level, detection rates of abnormal TG and HDL-C between the observation group and the control group (P>0.05) . The odds ratio (OR) of MS in the observation group was 1.988 times that in the control group (P<0.05) . Conclusion: Occupational gasoline exposure is associated with the increasing detection rate of MS.
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Affiliation(s)
- Y M Zheng
- Department of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - L X Guo
- Department of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Y H Li
- Department of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - X X Guan
- Department of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - L Guan
- Department of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Y L Zhang
- Department of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - S Q Li
- Department of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Z M Zhao
- Department of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
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Abstract
The bis-Schiff base of N,N'-1,10-bis(naringin) triethylenetetraamine (1) was prepared, as a copper(II) ion chelator, compound 1 was used for Alzheimer's disease therapy in vitro. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay of compound 1 showed that this Schiff base could promote PC12 cells proliferation, and also, compound 1 could inhibit Cu2+-amyloid-β (Aβ)1-42 mediated cytotoxicity on PC12 cells. The thioflavine T (ThT) assay showed that 1 can effectively attenuate Cu2+-induced Aβ1-42 aggregation. In addition, compound 1 is determined to be potent antioxidants on the basis of in vitro antioxidant assay, it can effectively decease the level of reactive oxygen species (ROS) in Cu2+-Aβ1-42-treated PC12 cells and elevate the superoxide dismutase (SOD) activity in Cu2+-Aβ1-42-treated PC12 cells. The results show that N,N'-1,10-bis(naringin) triethylenetetraamine is a potential agent for therapy of Alzheimer's disease.
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Affiliation(s)
- Li-Xia Guo
- Key Laboratory of Natural Medicine Research of Chongqing Education Commission, Chongqing Technology and Business University.,College of Environment and Resources, Chongqing Technology and Business University
| | - Bin Sun
- Key Laboratory of Natural Medicine Research of Chongqing Education Commission, Chongqing Technology and Business University.,College of Environment and Resources, Chongqing Technology and Business University
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Xu SF, Wang WW, Chen J, Liu T, Zhang XX, Xu LB, Zhao ZG, Yu SJ, Guo LX. [Analysis of gene mutation profile of adult soft tissue sarcomas using high-throughput sequencing technology]. Zhonghua Zhong Liu Za Zhi 2020; 42:741-745. [PMID: 32988156 DOI: 10.3760/cma.j.cn112152-20200425-00378] [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] [Indexed: 11/05/2022]
Abstract
Objective: To understand the genetic variation of soft tissue sarcomas, and to provide a scientific evidence for the individualized treatment. Methods: The somatic mutation and germline mutation of 45 adult soft tissue sarcomas had been detected by high-throughput sequencing technology, the clinical data were also analyzed. Results: A total of 88 gene mutations were detected in 45 samples, including 78 single nucleotide variation (SNV), 13 insertion/deletion (Indel) and 19 copy number variation (CNV). The most common mutant genes are TP53, CDKN2A, MDM2, CDK4, NF1 and PTEN. Among them, the mutation rates of TP53-MDM2/MDM4-CDKN2A pathway, CDKN2A/CDK4/RB1 pathway, and RAS/NF1/PTEN/PI3K pathway were more frequent (32/88, 36%). In terms of immunotherapy biomarkers among 10 samples, the median value of tumor mutation burden was 2.02 muts/Mb (0-4.24 muts/Mb), and all were microsatellite stable. Conclusions: This study analyzes the genetic variation of soft tissue sarcoma, and determines the high-frequency gene mutations and pathways, which may be the potential drug targets. This finding can provide scientific evidences for the personalized treatment of soft tissue sarcoma.
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Affiliation(s)
- S F Xu
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - W W Wang
- Thorgene Co., Ltd., Beijing 100176, China
| | - J Chen
- BoAo BioTech Group Co., Ltd., Beijing 100176, China
| | - T Liu
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - X X Zhang
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - L B Xu
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - Z G Zhao
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - S J Yu
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - L X Guo
- BoAo BioTech Group Co., Ltd., Beijing 100176, China
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Liu H, Pu YH, Ren JW, Li EW, Guo LX, Yin WB. Genetic dereplication driven discovery of a tricinoloniol acid biosynthetic pathway in Trichoderma hypoxylon. Org Biomol Chem 2020; 18:5344-5348. [PMID: 32638809 DOI: 10.1039/d0ob01202e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A genetic dereplication approach in combination with differential gene expression led to the discovery of three new sesquiterpenes, tricinoloniol acids (TRAs) A-C (1-3) and the known fusidilactone A (4) from T. hypoxylon. Comparative transcriptomic analysis and targeted deletion identified the biosynthetic route for TRAs. Our results demonstrate an alternative application of the genetic dereplication method for exploring the biosynthesis of cryptic secondary metabolites (SMs), which utilizes the coordinated expression of trichothecene (tri) and tra cluster genes.
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Affiliation(s)
- Huan Liu
- School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, PR China. and State Key Laboratory of Mycology and CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yu-Han Pu
- Environmental and Resources Institute, Chongqing Technology and Business University, Chongqing 400067, PR China
| | - Jin-Wei Ren
- State Key Laboratory of Mycology and CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Er-Wei Li
- State Key Laboratory of Mycology and CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Li-Xia Guo
- Environmental and Resources Institute, Chongqing Technology and Business University, Chongqing 400067, PR China
| | - Wen-Bing Yin
- School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, PR China. and State Key Laboratory of Mycology and CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
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Zhu YT, Teng Z, Zhang YF, Li W, Guo LX, Liu YP, Qu XJ, Wang QR, Mao SY, Chen XY, Zhong DF. Effects of Apatinib on the Pharmacokinetics of Nifedipine and Warfarin in Patients with Advanced Solid Tumors. Drug Des Devel Ther 2020; 14:1963-1970. [PMID: 32546963 PMCID: PMC7246325 DOI: 10.2147/dddt.s237301] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 04/27/2020] [Indexed: 12/02/2022]
Abstract
Background and Purpose Apatinib is a small-molecule tyrosine kinase inhibitor for the treatment of recurrent or progressive advanced-stage gastric adenocarcinoma or gastroesophageal junction cancer. The in vitro inhibition studies suggested that apatinib exerted potent inhibition on CYP3A4 and CYP2C9. To evaluate the potential of apatinib as a perpetrator in CYP450-based drug–drug interactions in vivo, nifedipine and warfarin were, respectively, selected in the present study as the probe substrates of CYP3A4 and CYP2C9 for clinical drug–drug interaction studies. Since hypertension and thrombus are common adverse effects of vascular targeting anticancer agents, nifedipine and warfarin are usually coadministered with apatinib in clinical practice. Methods A single-center, open-label, single-arm, and self-controlled trial was conducted in patients with advanced solid tumors. The patients received a single dose of 30 mg nifedipine on Day 1/14 and a single dose of 3 mg warfarin on Day 3/16. On Day 9–21, the subjects received a daily dose of 750 mg apatinib, respectively. The pharmacokinetics of nifedipine and warfarin in the absence or presence of apatinib was, respectively, investigated. Results Compared with the single oral administration, coadministration with apatinib contributed to the significant increases of AUC0–48h and Cmax of nifedipine by 83% (90% confidence interval [CI] 1.46–2.31) and 64% (90% CI 1.34–2.01), respectively. Similarly, coadministration with apatinib contributed to the significant increases of AUC0-t and Cmax of S-warfarin by 92% (90% CI 1.68–2.18) and 24% (90% CI 1.10–1.39), respectively. Conclusion Concomitant apatinib administration resulted in significant increases in systemic exposure to nifedipine and S-warfarin. Owing to the risk of pharmacokinetic drug–drug interactions based on CYP3A4/CYP2C9 inhibition by apatinib, caution is advised in the concurrent use of apatinib with either CYP2C9 or CYP3A4 substrates.
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Affiliation(s)
- Yun-Ting Zhu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Zan Teng
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, People's Republic of China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Yi-Fan Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Wei Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Li-Xia Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Yun-Peng Liu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, People's Republic of China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Xiu-Juan Qu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, People's Republic of China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Quan-Ren Wang
- Department of Clinical Research and Development, Jiangsu Hengrui Medicine Co., Ltd., Shanghai, People's Republic of China
| | - Si-Yuan Mao
- Department of Clinical Research and Development, Jiangsu Hengrui Medicine Co., Ltd., Shanghai, People's Republic of China
| | - Xiao-Yan Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Da-Fang Zhong
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
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12
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Zhang YL, Zhao J, Guan L, Zheng YM, Chen M, Guo LX, Guan XX, Mao LJ, Li SQ, Zhao JY. [Activation of lung endothelial cells by extracellular histone in mice with acute respiratory distress syndrome]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:732-736. [PMID: 31726502 DOI: 10.3760/cma.j.issn.1001-9391.2019.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the changes of extracellular histones and pulmonary microvascular endothelial cells, and study the activating role of extracellular histones to pulmonary microvascular endothelial cells in the pathogenesis of acute respiratory distress syndrome (ARDS) . Methods: The correlation of the severity of acute lung injury with extracellular histones and pulmonary endothelial damage was studied through mice model, and acute lung injury was produced by aspiration of different concentrations of hydrochloric acid (0.01、0.1、0.3 and 0.5 mol/L, 2 ml/kg). Tumor necrosis factor-α (TNF-α), soluble thrombomodulin (sTM) and lung pathological change were measured. The pro-inflammatory role of extracellular histones was tested by injecting calf thymus histones (CTH) or specific anti-H4 antibody through tail vein. The direct activating role of extracellular histones to pulmonary microvascular endothelial cells was studied through pulmonary endothelial model. Results: The extracellular histones in plasma were increased obviously 6h after aspiration of different concentrations of hydrochloric acid in mice. A positive correlation was seen between extracellular histones and concentrations of aspirated hydrochloric acid (r=0.9180, P<0.05). The sTM in plasma also showed a positive correlation with concentrations of aspirated hydrochloric acid (r=0.8701, P<0.05). Merely administering CTH could not only increase TNF-α and sTM in plasma but also cause obvious lung injury, while specific anti-H4 antibody could relieve the inflammation and lung damage caused by CTH. Extracellular histones could directly damage pulmonary endothelial cells to release sTM in pulmonary endothelial model in vitro, while anti-H4 antibody could protect the endothelial cells. Conclusion: Extracellular histones are the key endogenic inflammatory mediators during the pathogenesis of ARDS caused by aspiration of hydrochloric acid, which could promote inflammation by directly activating pulmonary endothelial cells.
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Affiliation(s)
- Y L Zhang
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - J Zhao
- Institute of Pharmacology and Toxicology, Academy of Military Medical Science, Beijing 100850, China
| | - L Guan
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Y M Zheng
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - M Chen
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - L X Guo
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - X X Guan
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - L J Mao
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - S Q Li
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
| | - J Y Zhao
- Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China
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Guo LX, Chen G, Yin ZY, Zhang YH, Zheng XX. p-Synephrine exhibits anti-adipogenic activity by activating the Akt/GSK3β signaling pathway in 3T3-L1 adipocytes. J Food Biochem 2019; 43:e13033. [PMID: 31486092 DOI: 10.1111/jfbc.13033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 05/04/2019] [Revised: 08/16/2019] [Accepted: 08/20/2019] [Indexed: 11/29/2022]
Abstract
This work aimed to investigate the effects of p-synephrine on the differentiation of adipocyte and explore the underlying mechanism. We found that p-synephrine suppressed the 3T3-L1 cell adipogenesis by reducing the expression level of CCAAT/enhancer-binding protein α (C/EBPα) and peroxisome proliferator-activated receptor γ (PPARγ), which subsequently led to a reduction in the fatty acid-binding protein 4 (aP2) expression. p-Synephrine treatment markedly activated the protein kinase B (PKB/Akt) pathway and sequentially inhibited glycogen synthase kinase 3β (GSK3β) activity. Inhibition of GSK3β activity by LiCl was found to partially ameliorate the above-mentioned effects. All these data suggested that p-synephrine exhibited the anti-adipogenic effects via the regulation of Akt signaling pathway and the suppression of adipogenesis-related proteins. PRACTICAL APPLICATIONS: Citrus aurantium often uses as herbal or dietary supplement in various countries around the world, including in Seville, Spain and South Africa. In traditional Chinese herbs, it is referred to as "Fructus aurantii immaturus," "Zhi shi," or "Zhi ke," and has been used for hundreds of years for various digestive problems. Its primary protoalkaloid, p-synephrine, exhibited lipolytic effects and energy expenditure, which has rapidly replaced ephedrine as an "ephedra-free" alternative dietary supplement. The current study firstly demonstrated the anti-adipogenic effects of p-synephrine in 3T3-L1 preadipocytes, which was due to the regulation of Akt signaling pathway and the subsequent suppression of adipogenesis-related proteins. The present study may offer invaluable opinions into the mechanisms of body weight/fat-losing activities of p-synephrine in theory, and scientific experimental evidence on dietary supplement in practice. p-Synephrine could be utilized for the preventive and therapeutic uses against metabolic syndrome.
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Affiliation(s)
- Li-Xia Guo
- Chongqing Key Lab of Natural Medicine Research, Engineering Research Centre of Waste Oil Recovery Technology and Equipment of Chinese Ministry of Education, Chongqing Technology and Business University, Chongqing, China
| | - Gang Chen
- Chongqing Key Lab of Natural Medicine Research, Engineering Research Centre of Waste Oil Recovery Technology and Equipment of Chinese Ministry of Education, Chongqing Technology and Business University, Chongqing, China
| | - Zhong-Yi Yin
- Chongqing Key Lab of Natural Medicine Research, Engineering Research Centre of Waste Oil Recovery Technology and Equipment of Chinese Ministry of Education, Chongqing Technology and Business University, Chongqing, China
| | - Yong-Hong Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Xu-Xu Zheng
- Chongqing Key Lab of Natural Medicine Research, Engineering Research Centre of Waste Oil Recovery Technology and Equipment of Chinese Ministry of Education, Chongqing Technology and Business University, Chongqing, China
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Wang WH, Guo LX. [Interpretation of the chapter on insulin therapy for diabetes mellitus in the national guidelines for the prevention and control of diabetes in primary care (2018)]. Zhonghua Nei Ke Za Zhi 2019; 58:689-691. [PMID: 31461822 DOI: 10.3760/cma.j.issn.0578-1426.2019.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- W H Wang
- Department of Endocrinology, Beijing Hospital, National Center of Gerontology, Beijing 100010, China
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15
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Wang XM, Xiao GX, Liang JJ, Guo LX, Liu Y. [Application of spatial statistics in studying the distribution of food contamination]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:241-246. [PMID: 30744280 DOI: 10.3760/cma.j.issn.0254-6450.2019.02.022] [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] [Indexed: 11/05/2022]
Abstract
Objective: Based on data related to arsenic contents in paddy rice, as part of the food safety monitoring programs in 2017, to discuss and explore the application of spatial analysis used for food safety risk assessment. Methods: One province was chosen to study the spatial visualization, spatial point model estimation, and kernel density estimation. Moran's I statistic of spatial autocorrelation methods was used to analyze the spatial distribution at the county level. Results: Data concerning the spatial point model estimation showed that the spatial distribution of pollution appeared relatively dispersive. From the kernel density estimation, we found that the hot spots of pollution were mainly located in the central and eastern regions. The global Moran's I values appeared as 0.11 which presented low spatial aggregation to the rice arsenic contamination and with statistically significant differences. One "high-high" and two typical "low-low" clustering were seen in this study. Conclusion: Results from our study provided good visual demonstration, identification of pollution distribution rules, hot spots and aggregation areas for research on the distribution of food pollutants. Spatial statistics can provide technical support for the implementation of issue-based monitoring programs.
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Affiliation(s)
- X M Wang
- Food Safety Monitoring Section, Hunan Provincial Center for Disease Control and Prevention, Changsha 410005, China
| | - G X Xiao
- Risk Monitoring Department, China National Center for Food Safety Risk Assessment, Beijing 100022, China
| | - J J Liang
- Food Safety Monitoring Section, Hunan Provincial Center for Disease Control and Prevention, Changsha 410005, China
| | - L X Guo
- Risk Communication Department, China National Center for Food Safety Risk Assessment, Beijing 100022, China
| | - Y Liu
- Risk Communication Department, China National Center for Food Safety Risk Assessment, Beijing 100022, China; Post-doctoral Station, Guizhou Academy of Sciences, Guiyang 550001, China
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16
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Yu DN, Xian TZ, Wang LJ, Cheng B, Sun MX, Guo LX. [Analysis of body composition and resting metabolic rate of 858 middle-aged and elderly people in urban area of Beijing]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:686-688. [PMID: 29860819 DOI: 10.3760/cma.j.issn.0254-6450.2018.05.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the overweight rate and obesity rate in middle-aged and elderly people in urban area of Beijing, and analyze the changes of body composition and resting metabolic rate with age. Methods: From November 2014 to December 2015, body composition measurement and resting metabolic rate detection were conducted among 858 people aged 51 to 99 years, including 760 men, 98 women, who received physical examination at Beijing Hospital. Results: The overweight rate was 51.4%, and the obesity rate was 16.9%. The overweight rate was 26.5% and the obesity rate was 14.3% in women, significantly lower than those in men (54.6% and 17.2%) (P<0.001). The distribution of skeletal muscle volume, muscle index, body fat percentage, visceral fat area and resting metabolic rate in different age groups were different (P<0.001). In the normal weight group, the skeletal muscle volume, muscle index and resting metabolic rate in age group ≥80 years decreased obviously (P<0.05). At the same time, the body fat percentage and visceral fat area increased obviously (P<0.05). However, the skeletal muscle volume, muscle index and resting metabolic rate of the overweight and obese groups began to decrease obviously in age group 70- years (P<0.05), and the decrease in age group ≥80 years was more obvious. At the same time, body fat percentage and visceral fat area increased significantly in age group 70- years (P<0.05). Conclusion: The overweight and obesity rates were high in the middle-aged and elderly people in the urban area of Beijing, and the rates were higher in men than in women. With the increase of age, the skeletal muscle volume, muscle index and resting metabolic rate gradually decreased, while the percentage of body fat and visceral fat area increased; Overweight and obese people had earlier changes in body composition and resting metabolic rate.
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Affiliation(s)
- D N Yu
- Department of Endocrinology, National Center of Gerontology, Beijing Hospital, Beijing 100730, China
| | - T Z Xian
- Department of Endocrinology, National Center of Gerontology, Beijing Hospital, Beijing 100730, China
| | - L J Wang
- Department of Nutrition, National Center of Gerontology, Beijing Hospital, Beijing 100730, China
| | - B Cheng
- Department of Nutrition, National Center of Gerontology, Beijing Hospital, Beijing 100730, China
| | - M X Sun
- Beijing Eden Hospital, Beijing 100081, China
| | - L X Guo
- Department of Endocrinology, National Center of Gerontology, Beijing Hospital, Beijing 100730, China
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Zhang YJ, Cheng YH, Guo LX, Wang NQ, Liu H. [Expression of succinate dehydrogenase subunit protein in succinate dehydrogenase-deficient gastrointestinal stromal tumors]. Zhonghua Bing Li Xue Za Zhi 2018; 47:252-257. [PMID: 29690663 DOI: 10.3760/cma.j.issn.0529-5807.2018.04.005] [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] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the expression of succinate dehydrogenase complex subunit protein in succinate dehydrogenase-deficient gastrointestinal stromal tumors (SDH-deficient GISTs). Methods: Three hundred fifty-two cases of GISTs were collected from January 2003 to January 2017 at the Affiliated Hospital of Guizhou Medical University and West China Hospital of Sichuan University.The expression of succinate dehydrogenase subunit protein was detected by immunohistochemical EnVision technique in 352 cases of GISTs, and the negative cases were analyzed for clinicopathologic features and outcome. The gene segments of CKIT exons 9, 11, 13 and 17 and PDGFRA exons 12 and 18 were amplified and detected in SDH-deficient (negative) cases. Results: A total of 15 SDHB-deficient (negative) GISTs (4.3%, 15/352) were found among 352 cases of GISTs. Six patients were male and nine were female. The age of initial diagnosis ranged from 15 to 84 years (median=53 years, mean=47 years). The tumor involved stomach (14 cases) and mesentery (1 case). The tumor sizes varied from 0.5 cm to 15.0 cm (mean=6.9 cm). There were six, six and three cases of epithelioid, mixed and spindle cell types respectively. Eight cases showed multi-nodularity in the wall of stomach. Metastasis to lymph node was noted in four cases, one case showed intraperitoneal implantation metastasis. Metastases to liver, pancreas and lymph node were found in one case, and one case showed vascular invasion. Among SDHB-deficient GISTs, two SDHA-deficient (negative) cases were found (0.6%, 2/352), but there were no SDHC and SDHD deficient (negative) cases. Five of the fifteen SDH-deficient GISTs had follow-up data: one patient died 8 months after surgery from unknown cause, four had no recurrences or metastases, and there was no history of paraganglioma and pulmonary chondroma found in patients and their families. No mutation in CKIT and PDGFRA gene was identified in 15 cases of SDH-deficient GISTs. Conclusion: SDH-deficient GISTs have unique clinicopathologic features and a favorable prognosis, and a small proportion of cases are SDHA-deficient.
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Affiliation(s)
- Y J Zhang
- Department of Pathology, Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
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18
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Mu YM, Guo LX, Li L, Li YM, Xu XJ, Li QM, Xu MT, Zhu LY, Yuan GY, Liu Y, Xu C, Wang ZJ, Shen FX, Luo Y, Liu JY, Li QF, Wang WH, Lai XY, Xu HF, Pan CY. [The efficacy and safety of insulin degludec versus insulin glargine in insulin-naive subjects with type 2 diabetes: results of a Chinese cohort from a multinational randomized controlled trial]. Zhonghua Nei Ke Za Zhi 2017; 56:660-666. [PMID: 28870034 DOI: 10.3760/cma.j.issn.0578-1426.2017.09.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To compare the safety and efficacy of insulin degludec (IDeg) with those of insulin glargine (IGlar) in insulin-naive subjects with type 2 diabetes (T2DM). Methods: This was a 26-week, randomized, open-label, parallel-group, treat-to-target trial in 560 Chinese subjects with T2DM (men/women: 274/263, mean age 56 years, mean diabetes duration 7 years) inadequately controlled on oral antidiabetic drugs (OADs). Subjects were randomized 2∶1 to once-daily IDeg (373 subjects) or IGlar(187 subjects), both in combination with metformin. The primary endpoint was changes from baseline in glycosylated hemoglobin(HbA1c) after 26 weeks. Results: Mean HbA1c decreased from 8.2% in both groups to 6.9% in IDeg and 7.0% in IGlar, respectively. Estimated treatment difference (ETD) of IDeg-IGlar in change from baseline was -0.10% points (95%CI-0.25-0.05). The proportion of subjects achieving HbA1c<7.0% was 56.3%and 49.7% with IDeg and IGlar, respectively [estimated odds ratio of IDeg/IGlar: 1.26(95%CI 0.88-1.82)]. Numerically lower rateof overall confirmed hypoglycaemia and statistically significantly lower nocturnal confirmed hypoglycemia were associated with IDeg compared with IGlar, respectively [estimated rateratio of IDeg/IGlar 0.69(95%CI 0.46-1.03), and 0.43(95%CI 0.19-0.97)]. No differences in other safety parameters were found between the two groups. Conclusions: IDeg was non-inferior to IGlar in terms of glycaemic control, and was associated with a statistically significantly lower rate of nocturnal confirmed hypoglycaemia. IDeg is considered to be suitable for initiating insulin therapy in Chinese T2DM patients on OADs requiring intensified treatment. Clinical trail registration: Clinicaltrials.gov, NCT01849289.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - C Y Pan
- Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China
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Lu XK, Shu N, Wang JJ, Chen XG, Wang DL, Wang S, Fan WL, Guo XN, Guo LX, Ye WW. Genome-wide analysis of salinity-stress induced DNA methylation alterations in cotton (Gossypium hirsutum L.) using the Me-DIP sequencing technology. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029673. [PMID: 28671256 DOI: 10.4238/gmr16029673] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cytosine DNA methylation is a significant form of DNA modification closely associated with gene expression in eukaryotes, fungi, animals, and plants. Although the reference genomes of cotton (Gossypium hirsutum L.) have been publically available, the salinity-stress-induced DNA methylome alterations in cotton are not well understood. Here, we constructed a map of genome-wide DNA methylation characteristics of cotton leaves under salt stress using the methylated DNA immunoprecipitation sequencing method. The results showed that the methylation reads on chromosome 9 were most comparable with those on the other chromosomes, but the greatest changes occurred on chromosome 8 under salt stress. The DNA methylation pattern analysis indicated that a relatively higher methylation density was found in the upstream2k and downstream2k elements of the CDS region and CG-islands. Almost 94% of the reads belonged to LTR-gspsy and LTR-copia, and the number of methylation reads in LTR-gypsy was four times greater than that in LTR-copia in both control and stressed samples. The analysis of differentially methylated regions (DMRs) showed that the gene elements upstream2k, intron, and downstream2k were hypomethylated, but the CDS regions were hypermethylated. The GO (Gene Ontology) analysis suggested that the methylated genes were most enriched in cellular processes, metabolic processes, cell parts and catalytic activities, which might be closely correlated with response to NaCl stress. In this study, we completed a genomic DNA methylation profile and conducted a DMR analysis under salt stress, which provided valuable information for the better understanding of epigenetics in response to salt stress in cotton.
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Affiliation(s)
- X K Lu
- College of Agronomy, , , China
| | - N Shu
- College of Agronomy, , , China
| | - J J Wang
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, , China
| | - X G Chen
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, , China
| | - D L Wang
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, , China
| | - S Wang
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, , China
| | - W L Fan
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, , China
| | - X N Guo
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, , China
| | - L X Guo
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, , China
| | - W W Ye
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry/Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, , China
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Guo LX, Liu JH, Zheng XX, Yin ZY, Kosaraju J, Tam KY. Geniposide improves insulin production and reduces apoptosis in high glucose-induced glucotoxic insulinoma cells. Eur J Pharm Sci 2017; 110:70-76. [PMID: 28363490 DOI: 10.1016/j.ejps.2017.03.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 11/24/2016] [Revised: 03/26/2017] [Accepted: 03/27/2017] [Indexed: 12/26/2022]
Abstract
Our previous work revealed that in the pancreatic β cell line, geniposide modulated ATP production and glucose-stimulated insulin secretion (GSIS) induced by the acute stimulation of high glucose concentration. However, the effects of geniposide on functional impairment and the mass of β-cells exposed to elevated levels of glucose remains unknown. In the present study, impaired GSIS and restrained proliferation were observed in the prolonged culture of insulinoma INS-1 cells with 33mM of glucose (high glucose). Our results indicate that the glucose-induced impairment of insulin release was significantly reverted by the inclusion of 1 or 10μM of geniposide. Moreover, induction of the phosphorylation of AMP-activated protein kinase (AMPK) was observed, which promoted the utilization of nutrient stores for energy production. AMPK phosphorylation was enhanced by an increased number of INS-1 cells, and the increased expression of AMPK downstream target heme oxygenase 1 (HO-1), under high glucose concentration. Furthermore, geniposide protected rat insulinoma cells from apoptosis in high-glucose concentrations. We have shown that these effects were associated with an increased apoptosis-related Bcl-2/BAX protein ratio. In conclusion, geniposide dose dependently improves β-cell function and increases the proliferation of β-cells exposed to prolonged hyperglycemia.
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Affiliation(s)
- L X Guo
- Chongqing Key Lab of Natural Medicine Research, Chongqing Technology and Business University, Chongqing 400067, China.
| | - J H Liu
- Chongqing Key Lab of Natural Medicine Research, Chongqing Technology and Business University, Chongqing 400067, China; College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400050, China
| | - X X Zheng
- Chongqing Key Lab of Natural Medicine Research, Chongqing Technology and Business University, Chongqing 400067, China
| | - Z Y Yin
- Chongqing Key Lab of Natural Medicine Research, Chongqing Technology and Business University, Chongqing 400067, China
| | - J Kosaraju
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - K Y Tam
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
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Wang JJ, Lu XK, Yin ZJ, Mu M, Zhao XJ, Wang DL, Wang S, Fan WL, Guo LX, Ye WW, Yu SX. Genome-wide identification and expression analysis of CIPK genes in diploid cottons. Genet Mol Res 2016; 15:gmr-15-gmr15048852. [PMID: 27819715 DOI: 10.4238/gmr15048852] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Calcineurin B-like protein-interacting protein kinase (CIPK) plays a key regulatory role in the growth, development, and stress resistance of plants by combining with phosphatase B subunit-like protein. In the present study, CIPK genes were identified in the whole genomes of diploid cottons and their sequences were subjected to bioinformatic analyses. The results demonstrated that the CIPK gene family was unevenly distributed in two diploid cotton genomes. Forty-one CIPKs were identified in the D genome, mainly located on chromosomes 9 and 10, whereas thirty-nine CIPKs were identified in the A genome, mainly located on chromosomes 8 and 11. Based on the gene structures, CIPKs in cotton could be classified into two types: one that is intron-rich and the other that has few introns. Phylogenetic analysis revealed that the CIPK gene family members in cotton had close evolutionary relationships with those of the dicotyledonous plants, such as Arabidopsis thaliana and poplar. The analysis of transcriptome sequence data demonstrated that there were differences in gene expression in different tissues, indicating that the expression of the CIPKs in cotton had spatio-temporal specificity. The expression analysis of CIPKs under abiotic stresses (drought, salt, and low temperature) in different tissues at trefoil stage demonstrated that these stresses induced the expression of CIPKs.
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Affiliation(s)
- J J Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - X K Lu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - Z J Yin
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - M Mu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - X J Zhao
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - D L Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - S Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - W L Fan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - L X Guo
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - W W Ye
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
| | - S X Yu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan Province, China
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Guo LX, Liu JH, Yin F. Regulation of insulin secretion by geniposide: possible involvement of phosphatidylinositol 3-phosphate kinase. Eur Rev Med Pharmacol Sci 2014; 18:1287-1294. [PMID: 24867506] [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: 06/03/2023]
Abstract
AIM Type 2 diabetes mellitus is characterized by lack of, or relative deficiency in, insulin productions and insensitivity of target tissues to insulin. Improvement of β-cell functions is a potential strategy for the clinical management of this disease. We reported before that geniposide improved glucose-stimulated insulin secretion with the activation of glucagon-like peptide 1 receptor (GLP-1R) in INS-1 pancreatic β cells, but the cell signaling mechanism of geniposide regulating glucose-stimulated insulin secretion (GSIS) in β cells is so far poorly understood. MATERIALS AND METHODS Effect of LY294002, a specific inhibitor of PI3K, on GSIS in the presence or absence of geniposide in INS-1 cells. In addition, the differential protein expression of geniposide treated INS-1 cells was examined by Western blot. RESULTS After pretreatment with 10 µM LY294002 for 1 hour, the insulin secretion induced by geniposide was partly abolished in INS-1 cells. After treatment with geniposide, the phosphorylation of PDK1 and Akt473 increased gradually to the maximum at 60 minutes or 120 minutes respectively. Furthermore, geniposide also inhibited the phosphorylation of downstream target GSK3β, and this effect was counteracted by preincubation with LY294002. And the expression of GLUT2 was increased after treatment with different doses geniposide. CONCLUSIONS Geniposide increases insulin secretion in pancreatic β cells in a PI3K dependent mechanism potentially through increased GLUT2 protein levels.
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Affiliation(s)
- L X Guo
- Chongqing Key Lab of Catalysis & Functional Organic Molecules, Chongqing Key Lab of Natural Medicine Research, Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission; Chongqing Technology and Business University, Chongqing, China.
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Luo XQ, Cai QY, Chen Y, Guo LX, Chen AQ, Wu ZQ, Lin C. Tyrosine phosphorylation of the NR2B subunit of the NMDA receptor in the spinal cord contributes to chronic visceral pain in rats. Brain Res 2013; 1542:167-75. [PMID: 24125810 DOI: 10.1016/j.brainres.2013.10.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [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: 07/19/2013] [Revised: 09/18/2013] [Accepted: 10/05/2013] [Indexed: 02/07/2023]
Abstract
The roles of spinal N-methyl-d-aspartic acid receptor 2B (NR2B) subunit in central sensitization of chronic visceral pain were investigated. A rat model with irritable bowel syndrome (IBS) was established by colorectal distention (CRD) on post-natal days 8-14. Responses of the external oblique muscle of the abdomen to CRD were measured to evaluate the sensitivity of visceral pain in rats. The sensitivity of visceral pain significantly increased in IBS-like rats. Expressions of spinal NR2B subunit and phosphorylated NR2B subunit significantly increased by 50-55% in IBS-like rats when compared with those in control rats. Ro 25-6981, a selective antagonist of NR2B subunit, has a dose-dependent anti-allodynic and anti-hyperalgesic effect without causing motor dysfunction in IBS-like rats. Furthermore, the activation mechanism of the spinal NR2B subunit in chronic visceral pain was also investigated. Spinal administration of genistein, a specific inhibitor of tyrosine kinases, also decreased the visceral pain hypersensitivity of IBS-like rats in a dose-dependent manner. In addition, the expression of phosphorylated NR2B subunit was decreased after spinal administration of Ro 25-6981 or genistein in IBS-like rats. In conclusion, tyrosine kinase activation-induced phosphorylation of NR2B subunit may play a crucial role in central sensitization of chronic visceral pain.
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Affiliation(s)
- Xiao-Qing Luo
- School of Foundational Medical sciences, Fujian Medical University, Fuzhou City, Fujian Province 350108, PR China; Department of Physiology and Pathophysiology, Laboratory of Pain Research, Key Laboratory of Brain Aging and Neurodegenerative Diseases, Neuroscience Research Center, Fujian Medical University, No. 1 Xueyuan Road, Shangjie Zhen, Minhou County, Fuzhou City, Fujian Province 350108, PR China
| | - Qin-Yan Cai
- School of Foundational Medical sciences, Fujian Medical University, Fuzhou City, Fujian Province 350108, PR China; Department of Physiology and Pathophysiology, Laboratory of Pain Research, Key Laboratory of Brain Aging and Neurodegenerative Diseases, Neuroscience Research Center, Fujian Medical University, No. 1 Xueyuan Road, Shangjie Zhen, Minhou County, Fuzhou City, Fujian Province 350108, PR China
| | - Yu Chen
- School of Foundational Medical sciences, Fujian Medical University, Fuzhou City, Fujian Province 350108, PR China; Department of Physiology and Pathophysiology, Laboratory of Pain Research, Key Laboratory of Brain Aging and Neurodegenerative Diseases, Neuroscience Research Center, Fujian Medical University, No. 1 Xueyuan Road, Shangjie Zhen, Minhou County, Fuzhou City, Fujian Province 350108, PR China
| | - Li-Xia Guo
- School of Foundational Medical sciences, Fujian Medical University, Fuzhou City, Fujian Province 350108, PR China; Department of Physiology and Pathophysiology, Laboratory of Pain Research, Key Laboratory of Brain Aging and Neurodegenerative Diseases, Neuroscience Research Center, Fujian Medical University, No. 1 Xueyuan Road, Shangjie Zhen, Minhou County, Fuzhou City, Fujian Province 350108, PR China
| | - Ai-Qin Chen
- School of Foundational Medical sciences, Fujian Medical University, Fuzhou City, Fujian Province 350108, PR China; Department of Physiology and Pathophysiology, Laboratory of Pain Research, Key Laboratory of Brain Aging and Neurodegenerative Diseases, Neuroscience Research Center, Fujian Medical University, No. 1 Xueyuan Road, Shangjie Zhen, Minhou County, Fuzhou City, Fujian Province 350108, PR China
| | - Zhen-Quan Wu
- School of Foundational Medical sciences, Fujian Medical University, Fuzhou City, Fujian Province 350108, PR China
| | - Chun Lin
- School of Foundational Medical sciences, Fujian Medical University, Fuzhou City, Fujian Province 350108, PR China; Department of Physiology and Pathophysiology, Laboratory of Pain Research, Key Laboratory of Brain Aging and Neurodegenerative Diseases, Neuroscience Research Center, Fujian Medical University, No. 1 Xueyuan Road, Shangjie Zhen, Minhou County, Fuzhou City, Fujian Province 350108, PR China.
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Xia ZN, Lin YX, Guo LX, Yang FQ, Xu P, Zhang YL, Liu JH. Development of a cell-based high-throughput peroxisome proliferator-activated receptors (PPARs) screening model and its application for evaluation of the extracts from Rhizoma Coptis. J Asian Nat Prod Res 2013; 15:225-234. [PMID: 23418674 DOI: 10.1080/10286020.2012.761977] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To date, peroxisome proliferator-activated receptors (PPARs) are becoming the new therapeutic targets for the treatment of metabolic diseases, such as Type 2 diabetes, obesity, and cardiovascular disease. In this study, a cell-based high-throughput PPARs (PPARα/β/γ) model was developed for the screening of PPARs agonists. The screening conditions were evaluated through analyzing the expression value of luciferase. Finally, 24 h of drug acting time, 5 times of the dilution factor of luciferase zymolyte, and about 2 × 10(4) cells/ well on HeLa cells in 96-well plates were used, respectively. Furthermore, the quality of high-throughput screening (HTS) in stability and reliability was evaluated by the Z'-factor. Additionally, different extracts of Rhizoma Coptis and berberine were tested by the developed method. The results suggested that both the EtOAc extract and berberine were able to activate PPARα/β/γ, and Rhizoma Coptis contains potential natural agonists of PPARs besides berberine. In conclusion, the developed HTS assay is a simple, rapid, stable, and specific method for the screening of PPARs natural agonists.
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Affiliation(s)
- Zhi-Ning Xia
- College of Bioengineering, Chongqing University, Chongqing 400030, China.
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25
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Wang DQ, Zheng XX, Yin ZY, Guo LX, Deng XH, Chen G. [Activating effect of citrus flavonoids on neuromedin U2 receptor and analysis on siRNA interference]. Zhongguo Zhong Yao Za Zhi 2012; 37:3462-3466. [PMID: 23373222] [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: 06/01/2023]
Abstract
OBJECTIVE To screen out active substances on Neuromedin U2 receptor (NMU2R) by using stable NMU2R cell lines and negative cell lines and analyzing siRNA interference. METHOD NMU2R cells were used to observe the activating effect of nine nine citrus flavonoids on NMU2R cell. Afterwards, false-positive interference of citrus flavonoids that showed higher activating effect was eliminated by using negative cells and analyzing the efficiency of siRNA interference. RESULT Hesperidin and nobiletin contained in citrus flavonoids were found to effectively activate NMU2R. The efficacy, EC50 and potency values of hesperidin were 4.688, 318.970 micromol x L(-1) and 200.933 micromol x L(-1), while the efficacy, EC50 and potency values of nobiletin were 4.758, 5.832 micromol x L(-1) and 3.124 micromol x L(-). CONCLUSION Hesperidin and nobiletin contained in citrus flavonoids can activate NMU2R. Nobiletin shows such a low EC50 that it has medicinal value.
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Affiliation(s)
- Dao-Qing Wang
- Research Center of Medicinal Chemistry and Chemical Biology, Chongqing Technology and Business University, Chongqing 400067, China
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26
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Chen G, Deng XH, Guo LX, Liu JH. [Effect of total glucosides of paeony on nuclear factor-kappaB activation in rat peritoneal macrophages]. Zhongguo Zhong Yao Za Zhi 2008; 33:669-671. [PMID: 18590197] [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: 05/26/2023]
Abstract
OBJECTIVE To study the effect of total glucosides of paeony (TGP) on lipopolysaccharides (LPS)-induced nuclear factor-kappaB (NF-kappaB) activation in macrophages. METHOD Rat peritoneal macrophages were pre-treated with TGP for 2 h and stimulated with LPS for 20 min or 0.5 h. Inhibitory kappaBalpha (IkappaBalpha) protein in the cytoplasm and NF-kappaB p65 protein in the nuclear were analyzed by western blot. Further, DNA binding activity of NF-kappaB complex was detected. RESULT TGP enhanced the amounts of IkappaBalpha protein in the cytoplasm and decreased the amounts of NF-kappaB p65 protein in the nuclear of LPS-induced macrophages. TGP also inhibited the LPS-mediated DNA binding activity of NF-kappaB complex in macrophages. CONCLUSION TGP can inhibit LPS-induced NF-kappaB activation in macrophages through arresting IKBalpha protein degradation, NF-kappaB p65 protein nuclear translocation and DNA binding activity of NF-kappaB complex.
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Affiliation(s)
- Gang Chen
- Research Center of Medical Chemistry and Chemical Biology, Chongqing Technology and Business University, Chongqing 400067, China.
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27
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Chen JM, Guo LX, Sun CY, Sun YX, Chen JW, Li L, Wang ZL. A stable and differentiable RNA positive control for reverse transcription-polymerase chain reaction. Biotechnol Lett 2006; 28:1787-92. [PMID: 16912918 DOI: 10.1007/s10529-006-9161-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2006] [Accepted: 07/07/2006] [Indexed: 10/24/2022]
Abstract
Most RNA positive controls currently used for monitoring the quality of RT-PCR assays have some disadvantages, such as instability, inability to monitor the quality of the relevant primers and/or causing indifferentiable false positives. To avoid these disadvantages, a simple method to prepare stable and differentiable RNA positive controls is now demonstrated with a real-time RT-PCR assay for the detection of Nipah virus (NiV). A DNA sequence which was shorter than its counterpart in the NiV genome and contained the binding sites of the primers of the RT-PCR assay was designed, synthesized and inserted into a vector, and then amplified by PCR with two vector-specific primers both of which contained a T7 promoter at the 5' terminal. The RNA positive control was the dsRNA in vitro transcribed from the PCR amplicons flanked by two T7 promoters. The RNA positive control was stable and able to monitor the quality of the whole concerned RT-PCR assay. False positives caused by contaminations of the RNA positive control or its amplicons could be easily identified because the amplicons of the RNA positive control were obviously shorter than those of real positive samples. Thus, the RNA positive control reported in this study avoided some common disadvantages of current RNA positive controls.
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Affiliation(s)
- Ji-Ming Chen
- Chinese Center for Animal Health and Epidemiology, Qingdao, China.
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Abstract
Hyaluronan (HA), a high molecular weight glycosaminoglycan in the extracellular matrix, has been implicated in the promotion of malignant phenotypes, including tumor angiogenesis. However, little is known about the effect of HA on tumor-associated lymphangiogenesis. In this study, mouse hepatocellular carcinoma Hca-F cells combined with or without HA were injected subcutaneously into C3H/Hej mice, then angiogenesis and lymphangiogenesis of implanted tumors were examined by immunostaining for platelet-endothelial cell adhesion molecule-1 and lymphatic vascular endothelial hyaluronan receptor-1 respectively. Interestingly, we found HA promotes tumor lymphangiogenesis and the occurrence of intratumoral lymphatic vessels, but has little effect on tumor angiogenesis. Moreover, HA also promotes intralymphatic tumor growth, although it is not sufficient to potentiate lymphatic metastasis. These results suggest that HA, which is elevated in most malignant tumor stroma, may also play a role in tumor progression by promoting lymphangiogenesis.
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Affiliation(s)
- Li-Xia Guo
- Laboratory of Biotherapy, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai 200031, China
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Ye J, Wu YL, Zhang S, Chen Z, Guo LX, Zhou RY, Xie H. Inhibitory effect of human telomerase antisense oligodeoxyribonucleotides on the growth of gastric cancer cell lines in variant tumor pathological subtype. World J Gastroenterol 2005; 11:2230-7. [PMID: 15818731 PMCID: PMC4305804 DOI: 10.3748/wjg.v11.i15.2230] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the inhibitory effect of specialized human telomerase antisense oligodeoxyribonucleotides on the growth of well (MKN-28), moderately (SGC-7901) and poorly (MKN-45) differentiated gastric cancer cell lines under specific conditions and its inhibition mechanism, and to observe the correlation between the growth inhibition ratio and the tumor pathologic subtype of gastric cancer cells.
METHODS: Telomerase activity in three gastric cancer cell lines of variant tumor pathologic subtype was determined by modified TRAP assay before and after the specialized human telomerase antisense oligodeoxyribonucleotides were dealt with under specific conditions. Effect of antisense oligomer under specific conditions of the growth and viability of gastric cancer cell lines was explored by using trypan blue dye exclusion assay, and cell apoptosis was detected by cell morphology observation, flow cytometry and TUNEL assay.
RESULTS: Telomerase activity was detected in well, moderately and poorly differentiated gastric cancer cell lines (the quantification expression of telomerase activity was 43.7TPG, 56.5TPG, 76.7TPG, respectively).Telomerase activity was controlled to 30.2TPG, 36.3TPG and 35.2TPG for MKN-28, SGC-7901 and MKN-45 cell lines respectively after treatment with human telomerase antisense oligomers at the concentration of 5 μmol/L, and was entirely inhibited at 10 μmol/L, against the template region of telomerase RNA component, whereas no inhibition effect was detected in missense oligomers (P<0.05). After treatment with antisense oligomers at different concentrations under specific conditions for 96 h, significant growth inhibition effects were found in MKN-45 and SGC-7901 gastric cancer cell lines (the inhibition ratio was 40.89% and 71.28%), but not in MKN-28 cell lines (15.86%). The ratio of inactive SGC-7901 cells increased according to the prolongation of treatment from 48 to 96 h. Missense oligomers could not lead to the same effect (P<0.05). Apoptosis of SGC-7901 and MKN-45 cells was detected not only by morphology and TUNEL assay but also by flow cytometry. The apoptotic rate reached 33.56% for SGC-7901 cells and 44.75% for MKN-45 cells.
CONCLUSION: The viability and proliferation of gastric cancer cells can be inhibited by antisense telomerase oligomers. The growth inhibition of gastric cancer cells is correlated with concentration, time and sequence specialty of antisense oligomers. The inhibition mechanism of antisense human telomerase oligomers depends not only on the sequence specialty but also on the biological characteristics of gastric cancer cell lines.
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Affiliation(s)
- Jing Ye
- Department of Gastroenterology, Ruijin Hospital, Shanghai Second Medical University, Shanghai 200025, China
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30
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Abstract
AIM: To investigate the differential phosphorylation and activation of p38 in hepatocytes by pro-apoptotic Transforming Growth Factor-β1 (TGF-β1), pro-survival factors Epidermal Growth Factor (EGF) and 12-O-tetradecanoylphorbol-13-acetate (TPA) and the potential mechanisms.
METHODS: The phosphorylation and activation of p38 were determined by immunoblotting. Apoptosis was analyzed by morphological staining and observation, FACS analysis of sub-G1 content and DNA fragmentation assay. To quantitatively determine caspase activation, caspase activity assay was performed in vitro.
RESULTS: TGF-β1-induced apoptosis was associated with the phosphorylation of p38, and SB202190, a specific inhibitor of p38, which was able to inhibit TGF-β1-induced caspase activation and apoptosis. TPA and EGF also blocked apoptosis induced by TGF-β1. Both of them induced the phosphorylation of p38. The results showed SB202190 had no effect on TGF-β1-induced phosphorylation of p38, but effectively inhibited both EGF and TPA-induced phosphorylation of p38.
CONCLUSION: Pro-apoptotic TGF-β1, anti-apoptotic TPA and EGF induce the phosphorylation of p38 through different mechanisms that can be distinguished by SB202190. The data suggest that TPA and EGF-induced p38 phosphorylation is through an autophosphorylation-dependent mechanism. Since p38 phosphorylation induced by TGF-β1 plays an important role in caspase activation and apoptosis, TPA and EGF-induced p38 phosphorylation may not be requisite for their anti-apoptotic function.
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Affiliation(s)
- Li-Xia Guo
- Laboratory of Biotherapy, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
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Abstract
AIM: To study the effects of doxorubicin on telomerase activity and telomere length in hepatocellular carcinoma.
METHODS: Telomerase activity was assayed with a non-radioisotopic quantitative telomerase repeat amplification protocal-based method. The effect of doxorubicin (DOX) on the growth of BEL-7404 human hepatoma cells was determined by microculture tetrazolium assay. Mean telomere length (terminal restriction fragment) was detected by Southern blot method. The expression of telomerase subunits genes was investigated by RT-PCR. Cell apoptosis and cell cycle distribution were evaluated by flow cytometry.
RESULTS: Telomerase activity was inhibited in a dose and time-dependent manner in BEL-7404 human hepatoma cells treated with DOX for 24, 48 or 72 h in concentrations from 0.156 to 2.5 μM which was crrelated with the inhibition of cell growth. No changes were found in the mRNA expression of three telomerase subunits (hTERT, hTR and TP1) after drug exposure for 72 h with indicated concentrations. The cells treated with DOX showed shortened mean telomere length and accumulated at the G2/M phase. However, there was almost no effects on cell apoptosis by DOX.
CONCLUSION: The telomerase inhibition and the telomere shortening by DOX may contribute to its efficiency in the treatment in hepatocellular carcinoma.
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Affiliation(s)
- Ru-Gang Zhang
- Department of Biotherapy, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200031, China
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Wang XW, Yuan JH, Zhang RG, Guo LX, Xie Y, Xie H. Antihepatoma effect of alpha-fetoprotein antisense phosphorothioate oligodeoxyribonucleotides in vitro and in mice. World J Gastroenterol 2001; 7:345-51. [PMID: 11819788 PMCID: PMC4688720 DOI: 10.3748/wjg.v7.i3.345] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate antihepatoma effect of antisense phosphorothioate oligodeoxyribonucleotides (S-ODNs) targeted to alpha-fetoprotein (AFP) genes in vitro and in nude mice.
METHODS: AFP gene expression was examined by immunocytochemical method or enzyme-linked immunosorbent assay. Effect of S-ODNs on SMMC-7721 human hepatoma cell growth in vitro was determined using microculture tetrazolium assay. In vivo antitumor activities of S-ODNs were monitored by measuring tumor weight differences in treated and control mice bearing SMMC-7721 xenografts. Induction of cell apoptosis was evaluated by fluorescence-activated cell sorter (FACS) analysis.
RESULTS: Antisense S-ODN treatment led to reduced AFP gene expression. Specific antisense S-ODNs, but not control S-ODNs, inhibited the growth of heaptoma cells in vitro. In vivo, only antisense S-ODNs exhibited obvious antitumor activities. FACS analysis revealed that the growth inhibition by antisense S-ODNs was associated with their cell apoptosis induction.
CONCLUSION: Antisense S-ODNs targeted to AFP genes inhibit the growth of human hepatoma cells and solid hepatoma, which is related to their cell apoptosis induction.
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Affiliation(s)
- X W Wang
- Department of Biotherapy, Shanghai Institute of Cell Biology, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
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Yuan JH, Zhang RP, Zhang RG, Guo LX, Wang XW, Luo D, Xie Y, Xie H. Growth-inhibiting effects of taxol on human liver cancer in vitro and in nude mice. World J Gastroenterol 2000; 6:210-215. [PMID: 11819558 PMCID: PMC4723486 DOI: 10.3748/wjg.v6.i2.210] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effects of taxol on SMMC-7721 human hepatoma and its mechanisms.
METHODS: In vitro cell growth was assessed by trypan blue exclusion method. Experimental hepatoma model was established by seeding SMMC-7721 cells subcutaneously into Balb/c (nu/nu) nude mice. In vivo tumor growth was determined by measurement of tumor diameter with Vernier calipers. The syntheses of DNA, RNA and protein were analyzed by incorporation of 3H-thymidine, 3H-uridine and 3H-leucine respectively. Using light and electron microscopes to observe the morphological changes of cells including mitosis and apoptosis.
RESULTS: Taxol was effective against SMMC-7721 human hepatoma cell growth in the ranges of 2.5 nmol/L-10 nmol/L- with mitotic arrest and apoptosis in vitro. DNA, RNA and protein syntheses in cells were also obviously suppressed by in vitro treatment of taxol for 72 h. Taxol at 2.5 nmol/L reduced 3H-thymidine uptake to about 34% of the control value (P < 0.05). Increasing the dose of taxol to 20 nmol/L resulted in a greater decrease in 3H-thymidine incorporation to 60% of the control value (P < 0.01). At a concentration of 20 nmol/L, the 3H-uridine and 3H-leucine uptakes were reduced to 52% (P < 0.05) and 63% (P < 0.01), respectively. In vivo, taxol significantly inhibited SMMC-7721 tumor growth at 10 mg/kg, i.p. once daily for 10 d. A more than 90% decrease in tumor volume was observed by day 11 (P < 0.01) similarly with mitotic arrest and cell apoptosis.
CONCLUSION: Taxol has a marked anticancer activity in SMMC-7721 human hepatoma both in vitro and in nude mice. Its mechanisms might be associated with mitotic arrest, subsequently, apoptosis of the hepatoma cells. No obvious toxicity was observed with in vivo administration of taxol.
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Zhang RG, Wang XW, Yuan JH, Guo LX, Xie H. Using a non-radioisotopic, quantitative TRAP-based method detecting telomerase activities in human hepatoma cells. Cell Res 2000; 10:71-7. [PMID: 10765985 DOI: 10.1038/sj.cr.7290037] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
A non-radioisotopic, quantitative TRAP-based telomerase activity assay was established mainly by using SYBR Green-I staining instead of radioisotope. Comparing with conventional radioisotope based method, it was better in reproducibility and accuracy. Using this method, we found telomerase activities were absent in normal human liver cells, while detected in all of four human hepatoma cell lines (BEL-7404, SMMC-7721, QGY-7903 and HCCM) without significant differences.
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Affiliation(s)
- R G Zhang
- Shanghai Institute of Cell Biology, Chinese Academy of Sciences
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35
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Wu ZS, Guo LX, Ren KF, Gouesbet G, Gréhan G. Improved algorithm for electromagnetic scattering of plane waves and shaped beams by multilayered spheres. Appl Opt 1997; 36:5188-5198. [PMID: 18259333 DOI: 10.1364/ao.36.005188] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
An efficient numerical procedure for computing the scattering coefficients of a multilayered sphere is discussed. The stability of the numerical scheme allows us to extend the feasible range of computations, both in size parameter and in number of layers for a given size, by several orders of magnitude with respect to previously published algorithms. Exemplifying results, such as scattering diagrams and cross-sectional curves, including the case of Gaussian beam illumination, are provided. Particular attention is paid to scattering at the rainbow angle for which approaches based on geometrical optics might fail to provide accurate enough results.
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36
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Guo LM, Guo LX. [Nutritional care of pre- and post-operative patients with extended radical surgery of carcinoma of the rectum]. Zhonghua Hu Li Za Zhi 1992; 27:537-9. [PMID: 1302660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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37
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Guo LX. Glial polyp of the cervix. A case report. Chin Med J (Engl) 1992; 105:518-9. [PMID: 1451553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- L X Guo
- Department of Pathology, Panzhihua Central Hospital
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38
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Guo LX, Zhang RL. [Pleomorphic xanthoastrocytoma--a case report]. Zhonghua Zhong Liu Za Zhi 1990; 12:477-8. [PMID: 2076651] [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: 12/30/2022]
Abstract
Pleomorphic xanthoastrocytoma (PXA) is a very rare and special kind of astrocytoma. Most of the patients have a relatively favorable prognosis despite its bizarre and pleomorphic cells. A 13 year old girl with PXA in the right occipitoparietal region is reported. Under light microscope, the tumor was markedly pleomorphic; mitosis was occasionally encountered and necrosis was absent. Immunohistochemically, cytoplasm of the tumor cells was positive for GFAP stain. Under electron microscope, many tumor cells contained glial filaments and large lipid vacuoles. Pericellular basal laminae could be found about some tumor cells, indicating a possible origin from subpial astrocyte. The clinicopathologic features, histogenesis, differential diagnosis and prognosis of PXA are discussed with review of literature.
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Affiliation(s)
- L X Guo
- Panzhihua Central Hospital, Sichuan Province
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39
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Chen XR, Ni XY, Huang RX, Wang ZY, Gu J, Lin G, Zhang ZN, Fan MY, Lin SC, Xu JB, Shi WJ, Wang MK, Wu S, Wu PS, Wang BH, Zhang BY, Zhou MF, Guo YZ, Li CM, Chen KY, He YT, Guo LX, Ju CQ. [Percutaneous transhepatic cholangiography and drainage]. Zhonghua Fang She Xue Za Zhi 1983; 17:33-7. [PMID: 6224659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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