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Zhu R, Li W, Zhen Z, Zou J, Liao G, Wang J, Wang Z, Chen H, Qin S, Weng Y. Quantum phase synchronization via exciton-vibrational energy dissipation sustains long-lived coherence in photosynthetic antennas. Nat Commun 2024; 15:3171. [PMID: 38609379 PMCID: PMC11015008 DOI: 10.1038/s41467-024-47560-6] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
The lifetime of electronic coherences found in photosynthetic antennas is known to be too short to match the energy transfer time, rendering the coherent energy transfer mechanism inactive. Exciton-vibrational coherence time in excitonic dimers which consist of two chromophores coupled by excitation transfer interaction, can however be much longer. Uncovering the mechanism for sustained coherences in a noisy biological environment is challenging, requiring the use of simpler model systems as proxies. Here, via two-dimensional electronic spectroscopy experiments, we present compelling evidence for longer exciton-vibrational coherence time in the allophycocyanin trimer, containing excitonic dimers, compared to isolated pigments. This is attributed to the quantum phase synchronization of the resonant vibrational collective modes of the dimer, where the anti-symmetric modes, coupled to excitonic states with fast dephasing, are dissipated. The decoupled symmetric counterparts are subject to slower energy dissipation. The resonant modes have a predicted nearly 50% reduction in the vibrational amplitudes, and almost zero amplitude in the corresponding dynamical Stokes shift spectrum compared to the isolated pigments. Our findings provide insights into the mechanisms for protecting coherences against the noisy environment.
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Affiliation(s)
- Ruidan Zhu
- Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Wenjun Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Zhanghe Zhen
- Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, P. R. China
| | - Jiading Zou
- Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Guohong Liao
- Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Jiayu Wang
- Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Zhuan Wang
- Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Hailong Chen
- Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
- Songshan Lake Materials Laboratory, Dongguan, 523808, Guangdong, P.R. China
| | - Song Qin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, 264003, P. R. China.
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China.
| | - Yuxiang Weng
- Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China.
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China.
- Songshan Lake Materials Laboratory, Dongguan, 523808, Guangdong, P.R. China.
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Lu S, Xie W, Zhang Y, Sun F, Huang J, Wang J, Zhu J, Zhen Z, Zhang Y. Off-target resistance to larotrectinib in two patients with NTRK fusion-positive pediatric solid tumors. Ann Oncol 2023; 34:1065-1067. [PMID: 37666486 DOI: 10.1016/j.annonc.2023.08.015] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 08/13/2023] [Accepted: 08/21/2023] [Indexed: 09/06/2023] Open
Affiliation(s)
- S Lu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - W Xie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - F Sun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - J Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - J Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - J Zhu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Z Zhen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Pediatric Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China.
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Wei TT, Mei LY, Zhen Z, Peng Z, Yao YX. [Analysis of suspected occupational diseases cases and subsequent diagnosis follow-up investigation in Hubei Province from 2020 to 2021]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:846-849. [PMID: 37935552 DOI: 10.3760/cma.j.cn121094-20220425-00223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Objective: To understand the epidemiological characteristics of suspected occupational diseases cases, and to track the subsequent diagnosis of suspected cases in Hubei Province from 2020 to 2021, and to provide theoretical basis for the supervision of suspected occupational diseases. Methods: In April 2022, the data of suspected occupational diseases cases and occupational diseases in Hubei Province from 2020 to 2021 were collected by the Occupational Diseases and Health Risk Factors Information Surveillance System. The distribution and diagnosis of suspected occupational diseases cases were analyzed. We investigated undiagnosed suspected occupational diseases by telephone. Results: From 2020 to 2021, a total of 1872 cases of suspected occupational diseases in 6 categories and 18 species were reported in Hubei Province. The top three suspected occupational diseases were suspected occupational noise deafness (36.75%, 688/1872), suspected coal worker's pneumoconiosis (33.07%, 619/1872) and suspected silicosis (20.99%, 393/1872). The diagnosis rate of suspected occupational diseases was 33.60% (629/1872). The rate of confirmed diagnosis was 63.59% (400/629). The diagnosis rate (26.86%, 456/1698) and rate of confirmed diagnosis (55.48%, 253/456) of suspected occupational diseases detected by occupational health examination were the lowest. The diagnosis rate of suspected occupational diseases detected by comprehensive medical institutions and private medical institutions were lower than disease prevention and control institutions and occupational disease prevention center (P<0.05). The main reasons for not entering the diagnostic procedure included that workers were not informed that they were diagnosed as suspected occupational diseases (31.55%, 124/393), workers were unwilling to apply for occupational disease diagnosis (18.56%, 73/393), and some workers planned to apply for diagnosis but had not yet applied (10.69%, 42/393) . Conclusion: Occupational noise deafness, coal worker's pneumoconiosis and silicosis are the main diseases of suspected occupational diseases in Hubei Province. In order to increase the diagnosis rate and confirmed diagnosis rate of suspected occupational diseases, it is suggested to strengthen management and supervision from the aspects of case management, information warning and worker notification.
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Affiliation(s)
- T T Wei
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
| | - L Y Mei
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
| | - Z Zhen
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
| | - Z Peng
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
| | - Y X Yao
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
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Olateju O, Zhen Z, Sujit S. Patterns in immunotherapy utilization for Non-Small Cell Lung Cancer pre- and post-FDA approval. Res Social Adm Pharm 2023. [DOI: 10.1016/j.sapharm.2022.07.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Sui HJ, Zhen Z, Wang QG, Cong TC, Huang JJ, Hu Y. [A real world study of anti-IgE monoclonal antibody in the treatment of allergic united airway disease]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:273-280. [PMID: 36797588 DOI: 10.3760/cma.j.cn112150-20220808-00798] [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: 02/18/2023]
Abstract
Objective: To investigate the clinical efficacy and safety of anti-IgE monoclonal antibody (omazumab) in the treatment of allergic united airway disease (UAD) in the real-wold. Methods: Retrospective cohort study summarizes the case data of patients with allergic united airway disease who were treated with anti IgE monoclonal antibody (omalizumab) for more than 16 weeks from March 1, 2018 to June 30, 2022 in the Peking University First Hospital.The allergic UAD is defined as allergic asthma combined with allergic rhinitis (AA+AR) or allergic asthma combined with chronic sinusitis with nasal polyps (AA+CRSwNP) or allergic asthma combined with allergic rhinitis and nasal polyps (AA+AR+CRSwNP). The control of asthma was evaluated by asthma control test (ACT), lung function test and fractional exhaled nitric oxide (FeNO). The AR was assessed by total nasal symptom score (TNSS). The CRSwNP was evaluated by nasal visual analogue scale (n-VAS), sino-nasal outcome test-22 (SNOT-22), nasal polyps score (TPS) and Lund-Mackay sinus CT grading system. The global evaluation of omalizumab for the treatment of allergic UADwas performed by Global Evaluation of Treatment Effectiveness(GETE).The drug-related side effects were also recorded. Matched t test and Wilcoxon signed-rank test were used to compare the score changes of IgE monoclonal antibody (omazumab) before and after treatment, and multivariate logistic regression analysis was used to determine the influencing factors of IgE monoclonal antibody (omazumab) response. Results: A total of 117 patients with UAD were enrolled, ranging in age from 19 to 77 years; The median age of patients was 48.7 years; Among them, 60 were male, ranging from 19 to 77 years old, with a median age of 49.9 years; There were 57 females, ranging from 19 to 68 years old, with a median age of 47.2 years. There were 32 cases in AA+AR subgroup, 59 cases in AA+CRSwNP subgroup, and 26 cases in AA+AR+CRSwNP subgroup. The total serum IgE level was 190.5 (103.8,391.3) IU/ml. The treatment course of anti IgE monoclonal antibody was 24 (16, 32) weeks. Compared with pre-treatment, omalizumab increased ACT from 20.0 (19.5,22.0) to 24.0 (23.0,25.0) (Z=-8.537, P<0.001), increased pre-bronchodilator FEV1 from 90.2 (74.8,103.0)% predicted value to 95.4 (83.2,106.0)% predicted value (Z=-5.315,P<0.001), increased FEV1/FVC from 80.20 (66.83,88.38)% to 82.72 (71.26,92.25)% (Z=-4.483,P<0.001), decreased FeNO from(49.1±24.8) ppb to (32.8±24.4) ppb (t=5.235, P<0.001), decreased TNSS from (6.5±2.6)to (2.4±1.9) (t=14.171, P<0.001), decreased n-VAS from (6.8±1.2) to (3.4±2.0)(t=14.448, P<0.001), decreased SNOT-22 from (40.0±7.9) to (21.3±10.2)(t=15.360, P<0.001), decreased TPS from (4.1±0.8) to (2.4±1.0)(t=14.718, P<0.001) and decreased Lund-Mackay CT score from (6.0±1.3) to (3.1±1.6)(t=17.012, P<0.001). The global response rate to omalizumab was 67.5%(79/117). The response rate in AA+AR (90.6%,29/32) was significantly higher than that in AA+CRSwNP (61.0%,36/59) and AA+AR+CRSwNP (53.8%,14/26) subgroups (χ2=11.144,P=0.004). Only 4 patients (3.4%,4/117) had mild side effects. Conclusion: The real-world study showed favorable effectiveness and safety of anti-IgE monoclonal antibody for treatment of allergic UAD. To provide basis for preventing the progress and precise treatment of allergic UAD.
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Affiliation(s)
- H J Sui
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing 100034, China
| | - Z Zhen
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing 100034, China
| | - Q G Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing 100034, China
| | - T C Cong
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing 100034, China
| | - J J Huang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing 100034, China
| | - Y Hu
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing 100034, China
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Wei TT, Mei LY, Zhang H, Yao YX, Zhen Z. [Epidemiological characteristics and trend of new cases of occupational pneumoconiosis in Hubei Province from 2011 to 2020]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:426-430. [PMID: 35785895 DOI: 10.3760/cma.j.cn121094-20210420-00224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: The epidemiological characteristics and trend of occupational pneumoconiosis in Hubei Province from 2011 to 2020 were analyzed to provide a theoretical basis for the development of prevention and control strategies for occupational pneumoconiosis. Methods: In March 2021, the data of newly occupational pneumoconiosis in Hubei Province from 2011 to 2020 were collected by the Occupational Diseases and Health Risk Factors Information Surveillance System. Descriptive statistics were adopted to analyze basic situation, region, industry, type of disease, year of diagnosis, age of onset and dust exposureduration of the cases. Results: From 2011 to 2020, a total of 7203 new cases of occupational pneumoconiosis were reported in Hubei Province, including 7125 (98.92%) men and 78 (1.08%) women. The average age of onset was (54.03±10.12) years old. The average duration of dust exposure was (13.80±9.56) years. The mainly types of pneumoconiosis were coal worker's pneumoconiosis (3593 cases, 49.88%) and silicosis (3301 cases, 45.83%). The cases included 4814 cases (66.83%) of stage Ⅰ pneumoconiosis, 1270 cases (17.63%) of stage Ⅱ and 1119 cases (15.54%) of stage Ⅲ. New cases mainly distributed in Yichang City (1586 cases, 22.02%), Shiyan City (1257 cases, 17.45%), Enshi Tujia and Miao Autonomous Prefecture (1050 cases, 14.58%) and Huangshi City (1009 cases, 14.01%), and occurred most frequently in coal mining and washing industry (3743 cases, 51.96%) and nonmetallic mining industry (582 cases, 8.08%). Pneumoconiosis patients of stage Ⅲ were mainly distributed in small enterprises (401 cases, 50.25%) and domestic enterprises (796 cases, 99.75%) . Conclusion: Coal worker's pneumoconiosis and silicosis accounted for the vast majority pneumoconiosis in Hubei Province. The new cases show obvious regions, industries and type of disease distribution. We should strengthen occupational health supervision in small and domestic enterprises.
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Affiliation(s)
- T T Wei
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
| | - L Y Mei
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
| | - H Zhang
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
| | - Y X Yao
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
| | - Z Zhen
- Institute of Hygiene Monitoring, Center for Disease Control and Prevention of Hubei Province, Wuhan 430079, China
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Zhen Z, Dong F, Shen H, Wang QG, Yang L, Hu J. MiR-524 inhibits cell proliferation and induces cell apoptosis in thyroid cancer via targeting SPAG9. Eur Rev Med Pharmacol Sci 2021; 25:7192. [PMID: 34919215 DOI: 10.26355/eurrev_202112_27408] [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: 11/12/2022]
Abstract
The article "MiR-524 inhibits cell proliferation and induces cell apoptosis in thyroid cancer via targeting SPAG9", by Z. Zhen, F. Dong, H. Shen, Q.-G. Wang, L. Yang, J. Hu, published in Eur Rev Med Pharmacol Sci 2018; 22 (12): 3812-3818-DOI: 10.26355/eurrev_201806_15265-PMID: 29949157, has been retracted by the authors due to some unrepeated data in their current research. The Publisher apologizes for any inconvenience this may cause. https://www.europeanreview.org/article/15265.
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Affiliation(s)
- Z Zhen
- Department of Otolaryngology, Head and Neck Surgery, Peking University First Hospital, Beijing, China
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Ren Q, Wang YC, Lin Y, Zhen Z, Cui Y, Qin S. The extremely large chloroplast genome of the green alga Haematococcus pluvialis: Genome structure, and comparative analysis. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chen S, Zhen Z, Wang J, Hu W. PO-1085: Predicting the consensus molecular subtypes of colorectal cancer by weakly supervised deep learning. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01102-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Li QR, Zhen Z, Na J, Gao L, Cao YL, Yuan Y. [Clinical analysis of children with cardiac syncope caused by anomalous origin of the left coronary artery from the right sinus]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:772-776. [PMID: 32957761 DOI: 10.3760/cma.j.cn112148-20191015-00631] [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 analysis the clinical characteristics and to summarize therapy experience of pediatric patients with cardiac syncope caused by anomalous origin of the left coronary artery from the right sinus (ALCA-R). Methods: We retrospectively analyzed the clinical data including clinical manifestations, myocardial injury biomarkers, radiological features, treatments and prognoses of pediatric patients with ALCA-R who were admitted to Beijing Children's Hospital from November 2015 to June 2018. Results: Four female patients were included in this analysis, age of onset was 7 to 14 years. All the patients presented with exercise-induced syncope and acute myocardial infarction. During the course, three patients presented with acute left heart failure, and one patient had history of sudden cardiac arrest. Laboratory data showed significant elevation of both the creatine kinase and troponin levels in four patients. All electrocardiogram (ECG) showed left main coronary artery occlusion, echocardiography suggested the possible anomalous origin of the left coronary artery in one child. Coronary CT angiography (CTA) revealed there was no coronary ostium in the left coronary sinus, and the left coronary artery had an anomalous origin from the right sinus. The left main coronary artery passed between the ascending artery and the root of the main pulmonary artery, which was compressed by these two large vessels. Two patients underwent cardiac magnetic resonance examination, which detected late gadolinium enhancement in ALCA-R with an interarterial course. Unroofing of the left coronary ostium (cut-back procedure) was performed in two patients, and the other two patients who were not operated were recommended to restrict their physical activities. During a regular follow-up period of 12-43 months, all the children survived without recurrent cardiovascular event. Conclusion: If an adolescent presents with exercise-induced syncope, acute myocardial infarction and even sudden death, and ECG shows left main coronary artery occlusion characteristics, we should consider the possibility of developmental abnormality of coronary artery, particularly the ALCA-R. Once diagnosed as ALCA-R, patients should be recommended to avoid strenuous activities,early recognition and surgical treatment are imperative for these patients.
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Affiliation(s)
- Q R Li
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Z Zhen
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - J Na
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - L Gao
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y L Cao
- Department of Radiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y Yuan
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
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Li QR, Zhen Z, Na J, Gao L, Cao YL, Yuan Y. [Analysis of four children with anomalous origin of the left coronary artery from the right sinus with interarterial course]. Zhonghua Er Ke Za Zhi 2020; 58:113-117. [PMID: 32102147 DOI: 10.3760/cma.j.issn.0578-1310.2020.02.009] [Citation(s) in RCA: 1] [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: 06/10/2023]
Abstract
Objective: To investigate the clinical features and improve the diagnosis and treatment of anomalous origin of the left coronary artery from the right coronary sinus with an interarterial course (ALCA-R-IAC) between the ascending aorta and main pulmonary artery in children. Methods: A retrospective analysis of the clinical manifestation, laboratory test, radiological feature, treatment and prognosis were conducted in four female children presented with ALCA-R-IAC in Beijing Children's Hospital from November 2015 to June 2018. Results: The four girls with onset age of 7.5-14.7 years were diagnosed with ALCA-R-IAC by CT coronary angiography (CTCA). Four children presented with exercise-induced syncope and clinical manifestations of acute myocardial infarction including 3 patients with acute left heart failure, 1 cardiogenic shock and 1 cardiac arrest. Nervous system involvement was found in one patient. Troponin I increased significantly to 20.65-50.00 μg/L in the four patients. Electrocardiogram (ECG) developed signs of left main coronary artery involvement. Echocardiography revealed reduced left ventricular ejection fraction (LVEF) of 25%-45% in three children and suspected anomalous origin of the left coronary artery in one child. CTCA showed an anomalous left coronary artery originating from the right coronary sinus, which had an interarterial course between the aorta and pulmonary artery leading to a slim left main coronary trunk. Two children underwent unroofing procedure and the other two children in whom physical activities were restricted received conservative managements. During a regular follow-up period of 12-43 months, all the children survived without recurrent symptoms and had good prognosis. Conclusions: ALCA-R-IAC can present as exercise-related syncope and acute myocardial infarction, even sudden death in children and adolescents. CTCA is helpful to clarify the early diagnosis of ALCA-R-IAC. Surgical intervention is the main treatment for ALCA-R-IAC and strenuous physical activities should be avoided.
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Affiliation(s)
- Q R Li
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Z Zhen
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - J Na
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - L Gao
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y L Cao
- Department of Radiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y Yuan
- Department of Cardiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
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Zhen Z, Dong F, Shen H, Wang QG, Yang L, Hu J. MiR-524 inhibits cell proliferation and induces cell apoptosis in thyroid cancer via targeting SPAG9. Eur Rev Med Pharmacol Sci 2019; 22:3812-3818. [PMID: 29949157 DOI: 10.26355/eurrev_201806_15265] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the effect of miR-524 on the proliferation of thyroid cancer and its underlying mechanism. PATIENTS AND METHODS MiR-524 expression levels in thyroid cancer samples and para-cancer tissues were tested by quantitative Real-time polymerase chain reaction (qRT-PCR). Cells proliferative ability and apoptosis were evaluated through methyl thiazolyl tetrazolium (MTT) and apoptosis assays, respectively. Luciferase reporter assay was used to confirm the regulatory mechanism. RESULTS MiR-524 expression was reduced in thyroid cancer specimen (p<0.05). Up-regulated miR-524 expression inhibited the proliferative ability and enhanced cell apoptosis of thyroid cancer cells. SPAG9 was a target gene of miR-524, and was reversely regulated by miR-524. CONCLUSIONS MiR-524 represses thyroid cancer cell proliferation and induces cell apoptosis via targeting SPAG9.
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Affiliation(s)
- Z Zhen
- Department of Otolaryngology, Head and Neck Surgery, Peking University First Hospital, Beijing, China.
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Chan YH, Ngai MC, Chen Y, Wu MZ, Yu YJ, Zhen Z, Lai K, Cheung TT, Ho LM, Chung HY, Lau CS, Tse HF, Yiu KH. 3045Role of osteogenic circulating endothelial progenitor cells in dissemination of large arterial calcification in rheumatoid arthritis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Rheumatoid arthritis is associated with both abnormal bone metabolism and atherogenesis but mechanistic links were missing.
Aim
This study aimed to investigate the role of osteocalcin (OCN)-expressing circulating endothelial progenitor cells (EPC)s in the severity and dissemination of systemic arterial calcifications in rheumatoid arthritis.
Methods
We performed flow cytometry studies in 145 consecutive patients with rheumatoid arthritis to determine osteogenic circulating levels of OCN-positive (OCN+) CD34+KDR+ and OCN+CD34+, versus conventional early EPC CD34+CD133+KDR+. Total calcium load of the thoracic aorta (ascending plus descending) and the carotid arteries were assessed by non-contrast computed tomography (CT) and contrast CT angiography.
Results
Osteogenic EPCs OCN+CD34+KDR+ (P=0.002) and OCN+CD34+ were strikingly associated with the clustered presence of aortic and carotid calcification (P=0.002 and 0.001 respectively, Figure). Multivariable analyses revealed that circulating OCN+CD34+KDR+ (B=14.4 [95% CI 4.0 to 24.8], P=0.007) and OCN+CD34+ (B=9.6 [95% CI 4.9 to 14.3], P<0.001) remained independently associated with increased aortic calcium load. OCN+CD34+ EPC (B=0.8 [95% CI 0.1 to 1.5], P=0.023), but not OCN+CD34+KDR+ EPC (B=1.2 [95% CI −0.2 to 2.6], P=0.09) was further independently associated with carotid calcium load. In comparison, conventional early EPC CD34+CD133+KDR+ had no significant association with aortic or carotid calcium load (P=0.46 and 0.88, respectively).
Conclusions
Circulating level of osteogenic EPC is associated with promulgated aortic and carotid calcification in patients with rheumatoid arthritis, suggesting a potential mechanistic role of the bone-vascular axis in pro-atherogenicity of rheumatic diseases.
Acknowledgement/Funding
General Research Fund, Hong Kong Research Grants Council
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Affiliation(s)
- Y.-H Chan
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
| | - M C Ngai
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
| | - Y Chen
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
| | - M Z Wu
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
| | - Y J Yu
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
| | - Z Zhen
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
| | - K Lai
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
| | - T T Cheung
- Queen Mary Hospital, Department of Medicine, Division of Rheumatology, The University of Hong Kong, Hong Kong, Hong Kong
| | - L M Ho
- The University of Hong Kong, School of Public Health, Hong Kong, Hong Kong
| | - H Y Chung
- Queen Mary Hospital, Department of Medicine, Division of Rheumatology, The University of Hong Kong, Hong Kong, Hong Kong
| | - C S Lau
- Queen Mary Hospital, Department of Medicine, Division of Rheumatology, The University of Hong Kong, Hong Kong, Hong Kong
| | - H F Tse
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
| | - K H Yiu
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong
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Yu Juan Y, Chen Y, Wu M, Zhen Z, Yao Q. P6550Right ventricular apical pacing vs. non-right ventricular apical pacing induced tricuspid regurgitation: implication of 3D echocardiographic location of leads. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Pacemaker, device leads have been reported to cause tricuspid regurgitation (TR) of variable degrees. It is different between RVA pacing and None-RVA pacing in device-related TR. Few articles indicate this area. Objectives: We sought to evaluate (1) TR degree in patients with right ventricular apical (RVA) pacing vs. none-RVA pacing; (2) the relationship of lead-position between RVA vs. none-RVA pacing associated with TR undergo 3-dimensional echocardiography (3DE).
Methods
Conventional echocardiography performed in 458 patients after pacemaker implantation. In addition, 284 patients with pre-pacemaker implantation echocardiography available were included to evaluate the development of significant TR prospectively.
Results
RVA pacing patients had a higher frequency of significant TR (degree≥2) compared to none-RVA pacing (63% vs. 42%, p-value <0.01). For RVA pacing, the lead was more likely to position at the anterior, posterior and septal compared to none-RVA pacing (51% vs. 33%, p-value <0.01). Importantly, leads were more likely to be positioned in the central portion with none-RVA pacing compared to RVA pacing (30% vs. 13%, p-value <0.01). Among 284 patients with pre-& post-implantation echocardiography, RVA pacing is associated with the development of significant TR compared to none-RVA pacing (59% vs. 41%, P=0.012).
Factors Associated with Significant TR Univariate p-value Multivariate p-value Age 1.035 (1.016–1.055) <0.01 1.025 (1.005–1.047) 0.02 Duration 1.003 (1.001–1.006) 0.02 1.001 (0.998–1.004) 0.62 Male 0678 (0.468–0.980) 0.04 0.657 (0.436–0.991) 0.05 Pre-AF 2.623 (1.740–3.955) <0.01 1.162 (0.588–2.295) 0.67 Post-AF 3.529 (2.329–5.346) <0.01 2.671 (1.566–4.556) <0.01 DDDR 0.428 (0.236–0.777) 0.01 0.724 (0.336–1.563) 0.41 RVA 2.451 (1.673–3.589) <0.01 1.962 (1.266–3.042) <0.01
3D TTE view of the device leads in TVs
Conclusions
The study demonstrates that RVA pacing is more likely to develop significant TR compared to none-RVA pacing. Significantly, this study is the first details to demonstrate that lead impingement is one of the possible mechanisms that could explain the higher frequency of TR in RVA pacing compared to none-RVA pacing by 3DE.
Acknowledgement/Funding
This manuscript is partially supported by the Summit Grant from the University of Hong Kong and Queen Mary Hospital.
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Affiliation(s)
- Y Yu Juan
- The University of Hong Kong, Hong Kong, China
| | - Y Chen
- The University of Hong Kong, Hong Kong, China
| | - M Wu
- The University of Hong Kong, Hong Kong, China
| | - Z Zhen
- The University of Hong Kong, Hong Kong, China
| | - Q Yao
- The University of Hong Kong, Hong Kong, China
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15
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Hou FQ, Yin YL, Zeng LY, Shang J, Gong GZ, Pan C, Zhang MX, Yin CB, Xie Q, Peng YZ, Chen SJ, Mao Q, Chen YP, Mao QG, Zhang DZ, Han T, Wang MR, Zhao W, Liu JJ, Han Y, Zhao LF, Luo GH, Zhang JM, Peng J, Tan DM, Li ZW, Tang H, Wang H, Zhang YX, Li J, Zhang LL, Chen L, Jia JD, Chen CW, Zhen Z, Li BS, Niu JQ, Meng QH, Yuan H, Sun YT, Li SC, Sheng JF, Cheng J, Sun L, Wang GQ. [Clinical effect and safety of pegylated interferon-α-2b injection (Y shape, 40 kD) in treatment of HBeAg-positive chronic hepatitis B patients]. Zhonghua Gan Zang Bing Za Zhi 2019; 25:589-596. [PMID: 29056008 DOI: 10.3760/cma.j.issn.1007-3418.2017.08.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To investigate the clinical effect and safety of long-acting pegylated interferon-α-2b (Peg-IFN-α-2b) (Y shape, 40 kD) injection (180 μg/week) in the treatment of HBeAg-positive chronic hepatitis B (CHB) patients, with standard-dose Peg-IFN-α-2a as positive control. Methods: This study was a multicenter, randomized, open-label, and positive-controlled phase III clinical trial. Eligible HBeAg-positive CHB patients were screened out and randomized to Peg-IFN-α-2b (Y shape, 40 kD) trial group and Peg-IFN-α-2a control group at a ratio of 2:1. The course of treatment was 48 weeks and the patients were followed up for 24 weeks after drug withdrawal. Plasma samples were collected at screening, baseline, and 12, 24, 36, 48, 60, and 72 weeks for centralized detection. COBAS® Ampliprep/COBAS® TaqMan® HBV Test was used to measure HBV DNA level by quantitative real-time PCR. Electrochemiluminescence immunoassay with Elecsys kit was used to measure HBV markers (HBsAg, anti-HBs, HBeAg, anti-HBe). Adverse events were recorded in detail. The primary outcome measure was HBeAg seroconversion rate after the 24-week follow-up, and non-inferiority was also tested. The difference in HBeAg seroconversion rate after treatment between the trial group and the control group and two-sided confidence interval (CI) were calculated, and non-inferiority was demonstrated if the lower limit of 95% CI was > -10%. The t-test, chi-square test, or rank sum test was used according to the types and features of data. Results: A total of 855 HBeAg-positive CHB patients were enrolled and 820 of them received treatment (538 in the trial group and 282 in the control group). The data of the full analysis set showed that HBeAg seroconversion rate at week 72 was 27.32% in the trial group and 22.70% in the control group with a rate difference of 4.63% (95% CI -1.54% to 10.80%, P = 0.1493). The data of the per-protocol set showed that HBeAg seroconversion rate at week 72 was 30.75% in the trial group and 27.14% in the control group with a rate difference of 3.61% (95% CI -3.87% to 11.09%, P = 0.3436). 95% CI met the non-inferiority criteria, and the trial group was non-inferior to the control group. The two groups had similar incidence rates of adverse events, serious adverse events, and common adverse events. Conclusion: In Peg-IFN-α regimen for HBeAg-positive CHB patients, the new drug Peg-IFN-α-2b (Y shape, 40 kD) has comparable effect and safety to the control drug Peg-IFN-α-2a.
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Affiliation(s)
- F Q Hou
- Department of Infectious Diseases, Center for Liver Diseases, Peking University First Hospital, Beijing 100034, China
| | - Y L Yin
- Xiamen Amoytop Biotech Co., Ltd, Xiamen 361028, China
| | - L Y Zeng
- Xiamen Amoytop Biotech Co., Ltd, Xiamen 361028, China
| | - J Shang
- Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - G Z Gong
- The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - C Pan
- Fuzhou Infectious Disease Hospital, Fuzhou 350025, China
| | - M X Zhang
- The Sixth People's Hospital of Shenyang, Shenyang 110006, China
| | - C B Yin
- Guangzhou Eighth People's Hospital, Guangzhou 510060, China
| | - Q Xie
- Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Y Z Peng
- Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - S J Chen
- Jinan Infectious Disease Hospital, Jinan 250021, China
| | - Q Mao
- Southeast Hospital, Third Military Medical University, Chongqing 400038, China
| | - Y P Chen
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Q G Mao
- Xiamen Hospital of T.C.M, Xiamen 361001, China
| | - D Z Zhang
- The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - T Han
- Tianjin Third Central Hospital, Tianjin 300170, China
| | - M R Wang
- 81th Hospital of People's Liberation Army, Nanjing 210002, China
| | - W Zhao
- The Second Affiliated Hospital of the Southeast University, Nanjing 210003, China
| | - J J Liu
- The First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Y Han
- Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - L F Zhao
- The First Affiliated Hospital of Shanxi University, Taiyuan 030001, China
| | - G H Luo
- The First Affiliated Hospital of Guangxi Medical Universtiy, Nanning 530021, China
| | - J M Zhang
- Huashan Hospital, Shanghai 200040, China
| | - J Peng
- Nangfang Hospital, Southern Medical University, Guangzhou 510510, China
| | - D M Tan
- Xiangya Hospital Central South University, Changsha 410008, China
| | - Z W Li
- Shengjing Hospital of China Medical University, Shenyang 110022, China
| | - H Tang
- West China Hospital, Sichuan University, Chengdu 610041, China
| | - H Wang
- Peking University People's Hospital, Beijing 100044, China
| | - Y X Zhang
- The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - J Li
- Jiangsu Provincial People's Hospital, Nanjing 210029, China
| | - L L Zhang
- The First Affiliated Hospital of Nanchang University, Nanchang 360102, China
| | - L Chen
- Shanghai Public Health Clinical Center, Shanghai 201508, China
| | - J D Jia
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - C W Chen
- 85th Hospital of People's Liberation Army, Shanghai 200052, China
| | - Z Zhen
- The Third Affiliated Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - B S Li
- 302 Military Hospital of China, Beijing 100039, China
| | - J Q Niu
- The First Bethune Hospital of Jilin University, Chanchun 130062, China
| | - Q H Meng
- Beijing Youan Hospital, Captial Medical University, Beijing 100069, China
| | - H Yuan
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Y T Sun
- Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - S C Li
- The 2nd Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - J F Sheng
- The First Affiliated Hospital of Zhejiang University, Hangzhou 310003, China
| | - J Cheng
- Beijing Ditan Hospital Capital Medical University, Beijing 100015, China
| | - L Sun
- Xiamen Amoytop Biotech Co., Ltd, Xiamen 361028, China
| | - G Q Wang
- Department of Infectious Diseases, Center for Liver Diseases, Peking University First Hospital, Beijing 100034, China
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Lin Y, Huang Q, Han T, Su Y, Gao D, Chen W, Ye H, Liu T, Tian X, Zhen Z, Wang Y. Evaluating the Effect of Simultaneous Transcranial Direct Current stimulation and Repetitive Transcranial Magnetic Stimulation on Minimally conscious state by Using EEG and Functional MRI. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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17
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Chan YH, Ngai MC, Chen Y, Wu MZ, Yu YJ, Zhen Z, Cheung T, Chung HY, Lau CS, Tse HF, Yiu KH. P2667Osteocalcin expression confers divergent roles of endothelial progenitor cells in cumulative inflammation-induced coronary calcification Development. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y.-H Chan
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - M.-C Ngai
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - Y Chen
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - M.-Z Wu
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - Y.-J Yu
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - Z Zhen
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - T Cheung
- Queen Mary Hospital, Department of Medicine, Division of Rheumatology, The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - H.-Y Chung
- Queen Mary Hospital, Department of Medicine, Division of Rheumatology, The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - C.-S Lau
- Queen Mary Hospital, Department of Medicine, Division of Rheumatology, The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - H.-F Tse
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
| | - K.-H Yiu
- Queen Mary Hospital, Department of Medicine, Division of Cardiology - The University of Hong Kong, Hong Kong, Hong Kong SAR People's Republic of China
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18
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Wang Y, Ran H, Menglong Z, Guichao L, Yan W, Zhen Z. PO-0768: Patterns of nodal relapse after D2 dissection in gastric cancer: rethinking the target volume. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31078-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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19
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Niu T, Xuan R, Jiang L, Wu W, Zhen Z, Song Y, Hong L, Zheng K, Zhang J, Xu Q, Tan Y, Yan X, Chen H. Astaxanthin Induces the Nrf2/HO-1 Antioxidant Pathway in Human Umbilical Vein Endothelial Cells by Generating Trace Amounts of ROS. J Agric Food Chem 2018; 66:1551-1559. [PMID: 29381356 DOI: 10.1021/acs.jafc.7b05493] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Astaxanthin is a powerful antioxidant that possesses potent protective effects against various human diseases and physiological disorders. However, the mechanisms underlying its antioxidant functions in cells are not fully understood. In the present study, the effects of astaxanthin on reactive oxygen species (ROS) production and antioxidant enzyme activity, as well as mitogen-activated protein kinases (MAPKs), phosphatidylinositol 3-kinase (PI3K)/Akt, and the nuclear factor erythroid 2-related factor 2 (Nrf-2)/heme oxygenase-1 (HO-1) pathways in human umbilical vein endothelial cells (HUVECs), were examined. It was shown that astaxanthin (0.1, 1, and 10 μM) induced ROS production by 9.35%, 14.8%, and 18.06% compared to control, respectively, in HUVECs. In addition, astaxanthin increased the mRNA levels of phase II enzymes HO-1 and also promoted GSH-Px enzyme activity. Furthermore, we observed ERK phosphorylation, nuclear translocation of Nrf-2, and activation of antioxidant response element-driven luciferase activity upon astaxanthin treatment. Knockdown of Nrf-2 by small interfering RNA inhibited HO-1 mRNA expression by 60%, indicating that the Nrf-2/ARE signaling pathway is activated by astaxanthin. Our results suggest that astaxanthin activates the Nrf-2/HO-1 antioxidant pathway by generating small amounts of ROS.
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Affiliation(s)
- Tingting Niu
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
- Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture School of Marine Sciences, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Rongrong Xuan
- Department of Gynecology and Obstetrics, The Affiliated Hospital of Medical College of Ningbo University , Ningbo, Zhejiang 315211, China
| | - Ligang Jiang
- PROYA Companies , Hangzhou, Zhejiang 310012, China
| | - Wei Wu
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Zhanghe Zhen
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Yuling Song
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Lili Hong
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Kaiqin Zheng
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Jiaxing Zhang
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Qingshan Xu
- Chenghai Baoer Bio-Ltd , Lijiang, Yunnan 674202, China
| | - Yinghong Tan
- Chenghai Baoer Bio-Ltd , Lijiang, Yunnan 674202, China
| | - Xiaojun Yan
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Haimin Chen
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
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20
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Feng B, Shang J, Wu SH, Chen H, Han Y, Li YQ, Zhang DZ, Zhao LF, Wei SF, Mao Q, Yin CB, Han T, Wang MR, Chen SJ, Li J, Xie Q, Zhen Z, Gao ZL, Zhang YX, Gong GZ, Yang DL, Pan C, Sheng JF, Tang H, Ning Q, Shi GF, Niu JQ, Luo GH, Sun YT, You H, Wang GQ, Zhang LL, Peng J, Zhang Q, Liu JJ, Chen CW, Chen XY, Zhao W, Wang RH, Sun L, Wei L. [Efficacy and safety of pegylated interferon α-2b injection (Y shape, 40 kD) in treatment of patients with genotype 1/6 chronic hepatitis C]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:187-194. [PMID: 28482405 DOI: 10.3760/cma.j.issn.1007-3418.2017.03.006] [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: 02/05/2023]
Abstract
Objective: To investigate the efficacy and safety of the new investigational drug pegylated interferon α-2b (Peg-IFN-α-2b) (Y shape, 40 kD) injection (180 µg/week) combined with ribavirin in the treatment of patients with genotype 1/6 chronic hepatitis C (CHC), with standard-dose Peg-IFN-α-2a combined with ribavirin as a positive control. Methods: A multicenter, randomized, open-label, and positive-controlled phase III clinical trial was performed. Eligible patients with genotype 1/6 CHC were screened out and randomly divided into Peg-IFN-α-2b(Y shape, 40kD) group and Peg-IFN-α-2a group at a ratio of 2:1. The patients in both groups were given oral ribavirin for 48 weeks in addition and then followed up for 24 weeks after drug withdrawal. Abbott Real Time HCV Genotype II was used to determine HCV genotype, and Cobas TaqMan quantitative real-time PCR was used to measure HCV RNA level at 0, 4, 12, 24, 48, and 72 weeks. Adverse events were recorded in detail. The primary efficacy endpoint was sustained virological response (SVR), and a non-inferiority test was also performed. Results: A total of 561 patients with genotype 1/6 CHC were enrolled, among whom 529 received treatment; 90.9% of these patients had genotype 1 CHC. The data of the full analysis set showed that SVR rate was 69.80% (95% CI 65.00%-74.60%) in the trial group and 74.16% (95% CI 67.73%-80.59%) in the control group (P = 0.297 0). The data of the per protocol set (PPS) showed that SVR rate was 80.63% (95% CI 76.04%-85.23%) in the trial group and 81.33% (95% CI 75.10%-87.57%) in the control group (P = 0.849 8), and the 95% CI of rate difference conformed to the non-inferiority standard. The analysis of the PPS population showed that of all subjects, 47.9% achieved rapid virologic response, with a positive predictive value of 93.8%. The incidence rate of adverse events was 96.30% in the trial group and 94.94% in the control group, and the incidence rate of serious adverse events was 5.13% in the trail group and 5.06% in the control group. Conclusion: In the regimen of Peg-IFN-α combined with ribavirin for the treatment of genotype 1/6 CHC, the new investigational drug Peg-IFN-α-2b(Y shape, 40 kD) has comparable clinical effect and safety to the control drug Peg-IFN-α-2a.
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Affiliation(s)
- B Feng
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing 100044, China
| | - J Shang
- Department of Infectious Diseases, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - S H Wu
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - H Chen
- Department of Infectious Diseases, The First Affiliated Hospital of Lanzhou University, Lanzhou 730000, China
| | - Y Han
- Department of Gastroenterology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Y Q Li
- Department of Infectious Diseases, 302 Military Hospital, Beijing 100039, China
| | - D Z Zhang
- Department of Infectious Diseases, Institute for Viral Hepatitis, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - L F Zhao
- Department of Infectious Diseases, The First Affiliated Hospital of Shanxi University, Taiyuan 030001, China
| | - S F Wei
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Q Mao
- Department of Infectious Disease, Southeast Hospital, Third Military Medical University, Chongqing 400038, China
| | - C B Yin
- Department of Infectious Diseases, Guangzhou Eighth People's Hospital, Guangzhou 510060, China
| | - T Han
- Department of Hepatology, Tianjin Third Central Hospital, Tianjin Medical University, Tianjin 300170, China
| | - M R Wang
- Institute of Liver Disease, Nanjing 81 Hospital, Nanjing 210002, China
| | - S J Chen
- Department of Hepatology, Jinan Infectious Disease Hospital, Jinan 250021, China
| | - J Li
- Department of Infectious Diseases, Jiangsu Provincial People's Hospital, Nanjing 210029, China
| | - Q Xie
- Department of Infectious Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Z Zhen
- Department of Infectious Diseases, The Third Affiliated Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - Z L Gao
- Department of Infectious Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China
| | - Y X Zhang
- Department of Infectious Diseases, The First Affiliated Hospital of Xinjiang Medical University, Wulumuqi 830054, China
| | - G Z Gong
- Department of Infectious Diseases, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - D L Yang
- Department of Infectious Disease, Institute of Infectious Disease, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - C Pan
- Department of Hepatology, Fuzhou Infectious Disease Hospital, Fuzhou, 350025, China
| | - J F Sheng
- The First Affiliated Hospital of Zhengjiang University, Hangzhou 310003, China
| | - H Tang
- Department of Infectious Diseases, Sichuan University West China Hospital, Chengdu 610041, China
| | - Q Ning
- Department of Infectious Disease, Institute of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - G F Shi
- Department of Infectious Diseases, Huashan Hospital, Shanghai 200040, China
| | - J Q Niu
- Department of Infectious Diseases, The First Affiliated Hospital of Jilin University, Changchun 130062, China
| | - G H Luo
- Department of Infectious Diseases, The First Affiliated Hospital of Guangxi Medical Universtiy, Nanning 530021, China
| | - Y T Sun
- Department of Infectious Diseases, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - G Q Wang
- Department of Infectious Diseases, Peking University First Hospital, Beijing 100034, China
| | - L L Zhang
- Department of Infectious Diseases, The First Affiliated Hospital of Nanchang University, Nanchang 360102, China
| | - J Peng
- Department of Infectious Diseases, Nangfang Hospital, Southern Medical University, Guangzhou 510510, China
| | - Q Zhang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - J J Liu
- Department of Infectious Diseases, The First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - C W Chen
- Nanjing Military Command Liver Disease Research Center, Shanghai 200000, China
| | - X Y Chen
- Hepatology Department, Youan Hospital, Capital Medical University, Beijing 100069, China
| | - W Zhao
- Department of Hepatology, The Second Affiliated Hospital of the Southeast University, Nanjing 210003, China
| | - R H Wang
- Xiamen Amoytop Biotech Co., Ltd, Xiamen, 361022, China
| | - L Sun
- Xiamen Amoytop Biotech Co., Ltd, Xiamen, 361022, China
| | - L Wei
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing 100044, China
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Chen Y, Liu J, Au W, Zhen Z, Yap D, Lau C, Tse H, Yiu K. P5427Cardiorenal syndrome in patients with valvular heart disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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22
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Liao B, Cao PP, Zeng M, Zhen Z, Wang H, Zhang YN, Hu CY, Ma J, Li ZY, Song J, Liu JX, Peng LY, Liu Y, Ning Q, Liu Z. Interaction of thymic stromal lymphopoietin, IL-33, and their receptors in epithelial cells in eosinophilic chronic rhinosinusitis with nasal polyps. Allergy 2015; 70:1169-80. [PMID: 26095319 DOI: 10.1111/all.12667] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Thymic stromal lymphopoietin (TSLP), IL-25, and IL-33 system contribute to the initiation and development of Th2 responses. This study aimed to explore the involvement of TSLP, IL-25, IL-33, and their receptors in type 2 T-helper (Th) responses in chronic rhinosinusitis with nasal polyps (CRSwNPs) and their cross-regulation in human nasal epithelial cells (HNECs). METHODS Immunohistochemistry, quantitative RT-PCR, ELISA, Bio-Plex assay, and flow cytometry were used to detect the expression of TSLP/common γ-like TSLP receptor (TSLPR)/IL-7 receptor α (IL-7Rα), IL-25/IL-17B receptor (IL-17RB), and IL-33/membrane-bound ST2 (ST2L)/soluble ST2 (sST2) in sinonasal mucosa and HNECs. HNECs cultured at an air-liquid interface were used to explore the expression in regulation of these cytokine systems. RESULTS Compared with controls and noneosinophilic CRSwNP, the expression of TSLP/TSLPR/IL-7Rα and ST2L/sST2 was significantly increased in eosinophilic CRSwNP, predominantly in epithelial cells. In contrast, the expression of IL-33 and IL-25/IL-17RB was enhanced in epithelial cells in both eosinophilic and noneosinophilic CRSwNP compared to controls. The expression of TSLP, TSLPR, and ST2L was positively correlated with symptom and computer tomography scan scores in eosinophilic CRSwNP and with Th2 cytokine expression in sinonasal mucosa. The expression of ST2L was correlated with TSLP and its receptor expression. TSLP could induce ST2L expression that promoted IL-33-induced TSLP expression in HNECs. In addition, TSLP/TSLPR/IL-7Rα and ST2L could be induced by Th2 cytokines, while IL-25/IL-17RB and IL-33 could be upregulated by Th1/Th17 cytokines, in HNECs. CONCLUSIONS The positive feedback loop between TSLP, IL-33 and their receptors, and Th2 cytokines may facilitate Th2-skewed inflammation in eosinophilic CRSwNP.
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Affiliation(s)
- B. Liao
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - P.-P. Cao
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - M. Zeng
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Z. Zhen
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
- Department of Otolaryngology-Head and Neck Surgery; Peking University First Hospital; Beijing China
| | - H. Wang
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Y.-N. Zhang
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
- Department of Otolaryngology-Head and Neck Surgery; Tianjin First Center Hospital; Tianjin China
| | - C.-Y. Hu
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
- Department of Ear, Nose and Throat; Xi'an Children's Hospital; Xi'an China
| | - J. Ma
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Z.-Y. Li
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - J. Song
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - J.-X. Liu
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - L.-Y. Peng
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Y. Liu
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Q. Ning
- Department of Infectious Disease; Institute of Infectious Disease; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Z. Liu
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
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Li G, Xiaowen L, Ya'nong W, Zhen Z. An Interim Analysis of a Phase 2 Clinical Trial of Preoperative Chemoradiation Therapy Improving the Resection Rate for Potential Resectable Gastric Cancer Patients. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Wong CK, Chen Y, Ho LM, Zhen Z, Siu CW, Tse HF, Yiu KH. The effects of hyperuricaemia on flow-mediated and nitroglycerin-mediated dilatation in high-risk patients. Nutr Metab Cardiovasc Dis 2014; 24:1012-1019. [PMID: 24680223 DOI: 10.1016/j.numecd.2014.02.006] [Citation(s) in RCA: 7] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 02/10/2014] [Accepted: 02/10/2014] [Indexed: 11/24/2022]
Abstract
BACKGROUND AND AIMS Uric acid is emerging as one of the newer risk markers to consider in the cardiovascular risk assessment because it is demonstrated to be associated with adverse cardiovascular outcomes, particularly in high cardiovascular risk patients. One of the proposed mechanisms involving hyperuricaemia is the development of vascular damage. The aim of this study is to examine the role of hyperuricaemia on vascular function in patients with high cardiovascular risk. METHODS AND RESULTS We examined the clinical significance of hyperuricaemia in relation to vasomotor response of the brachial artery by using high-resolution ultrasound in 304 subjects with coronary artery disease and/or diabetes. Nitroglycerin-mediated dilatation (NMD) was significantly lower in the hyperuricaemic group compared with the normouricaemic group (12.8 ± 6.9% vs. 16.2 ± 7.7%, p < 0.001), but no significant difference was observed in flow-mediated dilatation (FMD) between the two groups [3.78 (95% CR: 1.5-9.9) vs. 3.88 (95% CR: -2.6 to 9.9), p = 0.78]. Multivariate analysis demonstrated that smoking was the strongest predictor of FMD (b = -0.81, p = 0.02); and that smoking (b = -2.62, p = 0.003), SBP (b = -0.11, p = 0.001), hyperuricaemia (b = -2.11, p = 0.02) and use of nitrates (b = -3.30, p = 0.001) were independent predictors of NMD. CONCLUSION High cardiovascular risk patients with hyperuricaemia had a lower NMD than those with normouricaemia. Importantly, hyperuricaemia was independently associated with NMD after multivariable adjustments. To further understand the pathophysiological mechanisms involving hyperuricaemia, particularly in the context of impaired NMD, further experimental and clinical studies are needed.
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Affiliation(s)
- C-K Wong
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Y Chen
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - L-M Ho
- School of Public Health, The University of Hong Kong, Hong Kong
| | - Z Zhen
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - C-W Siu
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong; Research Centre of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - H-F Tse
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong; Research Centre of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
| | - K-H Yiu
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong; Research Centre of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
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Li G, Jiazhou W, Weigang H, Zhen Z. Radiation-Induced Liver Injury in 3-Dimensional Radiation Therapy (3D-RT) for Postoperative or Locoregional Recurrent Gastric Cancer: The Risk Factors and Dose Limitation. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Wong CKA, Chen Y, Zhen Z, Siu CW, Tse HF, Yiu KH. Gender-specific differences in the association of hyperuricaemia with subclinical atherosclerosis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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27
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Zhen Z, Wong A, Zhao CT, Chen Y, Siu CW, Tse HF, Yiu KH. Electromechanical interplay in diabetic cardiomyopathy: relationship between diastolic dysfunction and T-wave alternans. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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28
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Tong XL, Wu ST, Lian FM, Zhao M, Zhou SP, Chen XY, Yu B, Zhen Z, Qi LW, Li P, Wang CZ, Sun H, Yuan CS. The safety and effectiveness of TM81, a Chinese herbal medicine, in the treatment of type 2 diabetes: a randomized double-blind placebo-controlled trial. Diabetes Obes Metab 2013; 15:448-54. [PMID: 23231379 DOI: 10.1111/dom.12051] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/09/2012] [Accepted: 12/05/2012] [Indexed: 01/15/2023]
Abstract
AIM TM81 (or Tang-Min-Ling-Wan) is a Chinese medicine. Previous studies suggested that this medicine is effective for treating type 2 diabetes. This controlled trial evaluated the safety and effectiveness of TM81 in the treatment of type 2 diabetic patients. METHODS This study was a large-scale controlled clinical trial to evaluate the safety and effectiveness of TM81 on type 2 diabetes. After a 2-week run-in period, 480 overweight type 2 early-stage diabetic patients [35-65 years old, HbA1c ≥ 7.0%, fasting plasma glucose (FPG) 7.0-13.9 mM or 2 h plasma glucose (PG) > 11.1 mM, body mass index (BMI) ≥ 24 kg/m(2)] were enrolled. These patients were divided into a TM81 group and placebo group in a 3 : 1 ratio. The subjects received 6 g TM81 or placebo, three times daily for 12 weeks. RESULTS After treatment, the HbA1c decrease was 1.02% in the TM81 group versus 0.47% in the placebo group. The FPG decreased 0.8 ± 0.1 mM in the TM81 group versus an increase of 0.2 ± 0.2 mM in the placebo group. The PG decreased 2.7 ± 0.3 mM in the TM81 group versus a decrease of 0.9 ± 0.4 mM in the placebo group (all p < 0.05). The TM81 was more effective for patients with higher baseline HbA1c levels. The TM81 group also showed improved β-cell function and increased homeostatic model assessment (HOMA)-β. In addition, body weight, BMI and waist circumference of subjects in the TM81 group were reduced, and the symptoms related to diabetes were improved. There were no significant differences in the types and frequency of adverse reactions between the two groups. CONCLUSIONS The data showed that TM81 is effective in controlling blood glucose level and is safe to use in patients with early-stage type 2 diabetes.
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Affiliation(s)
- X L Tong
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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29
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Diao Q, Zhen Z, Ge HY. PP-052 Effect and significance of IRE1-mediated endoplasmic reticulum stress in liver cell apoptosis of experimental fulminant hepatic failure. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60205-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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30
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Zhen Z. [Sixty years of study on modern Chinese medical history]. Zhonghua Yi Shi Za Zhi 2001; 26:205-11. [PMID: 11618795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
This author gives a general description to the study of modern Chinese medical history in the last six decades, which is divided into 3 stages of Initiation, Accumulation and Development, introducing representative works from all stages with emphasis laid on the achievements attained in the last stage.
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31
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Zhen Z. [A brief biography of Song Xiang-yuan] (Chi). Zhonghua Yi Shi Za Zhi 2001; 18:146-9. [PMID: 11621711] [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: 02/21/2023]
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32
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Zhen Z. [Progress in proteomics]. Sheng Wu Gong Cheng Xue Bao 2001; 17:491-3. [PMID: 11797206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Proteomics, the large-scale analysis of proteins, will contribute greatly to our understanding of gene function in the post-genome era. Proteomics uses a combination of sophisticated techniques including two-dimensional(2D) gel electrophoresis, mass spectrometry, yeast two-hybrid system, bioinformatics, etc. to characterize, to quantify, and to analyze cellular proteins in a global way. The application of proteomics provides major opportunities to elucidate disease mechanisms and to identify new therapeutic targets. This review aims to explain the definition of proteomics and then to outline proteomic techniques. Finally, applications to the study of human disease are briefly discussed.
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Affiliation(s)
- Z Zhen
- Department of Biochemistry & Molecular Biology, Shandong University, Jinan 250100, China.
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33
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Chi D, Sun F, Zhen Z, Xu D, Zhang J, Qian X. [Biological characteristics and occurrence regularity of Phassus excrescens Bulter]. Ying Yong Sheng Tai Xue Bao 2000; 11:757-62. [PMID: 11767538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The biological characterisitics and occurrence regularity of Phassus excrescens were studied from 1997 to 2000 in the eastern part of Heilongjiang Province and Jilin Province. In this area, most of its individuals took two years to finish one generation, and over-wintered two times with eggs and larvae, respectively. At the end of June or the first ten days of July, larvae transferred to damage Fraxinus mandshurica. Feeding with artificial diet indoor, the larvae finished 6 instars before pupation. In artificial Manchurican ash forest, the larva mainly damaged the truck basal(below 20 cm) or truck of 2 to 20 years old Fraxinus mandshurica. The occurrence amount of this species was closely related to the forest age and the stand structure. Usually, pure artificial Fraxinus mandshurica stands and Fraxinus mandshurica-Pinus koraiensis mixed stands were damaged seriously, while Fraxinus mandshurica-Larix mixed forests were damaged lightly.
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Affiliation(s)
- D Chi
- Northeast Forestry University, Harbin 150040.
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Chunlin S, Zhen Z, Guifang X, Altosaar I, Pingzhang F. Construction of plant vectors with high level expression of B.t. toxin gene and studies on their expression behavior in transgenic tobaccos. Chin J Biotechnol 1999; 15:203-10. [PMID: 11037944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Breeding pest-resistant plants using plant genetic engineering technique is an effective strategy in integrated pest management (IPM). Increasing the expression level of foreign insecticidal protein by using a strong promoter is a useful method. In this work, a plant expression vector, pBinMoBc, was constructed. It contained the CryIA(c) gene under the control of a chimeric OM promoter and the omega factor. As a control, another vector, pBinoBc, was also constructed in this study. pBinoBc carrying CryIA(c) gene was under the control of a CaMV 35S promoter. The vectors were transferred into tobacco plants via Agrobacterium-mediated transformation. ELISA assay showed that the average expression level of the CryIA(c) gene in pBinMoBc transgenic tobacco plants is 2.44-times that in pBinoBc transgenic tobacco plants. The expression of B.t. toxin in individual plant can be up to 0.255% of total soluble proteins. Bioassay showed that pBinMoBc transgenic tobacco plants had more notable insecticidal effects than pBinoBc transgenic tobacco plants. The above results showed that the chimeric OM promoter is a stronger promoter than the CaMV 35S promoter that was widely used in plant genetic engineering. This is very useful in pest-resistant plant genetic engineering.
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Affiliation(s)
- S Chunlin
- Institute of Genetics, The Chinese Academy of Sciences, Beijing
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Giordano S, Bardelli A, Zhen Z, Menard S, Ponzetto C, Comoglio PM. A point mutation in the MET oncogene abrogates metastasis without affecting transformation. Proc Natl Acad Sci U S A 1997; 94:13868-72. [PMID: 9391119 PMCID: PMC28399 DOI: 10.1073/pnas.94.25.13868] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/1997] [Accepted: 08/18/1997] [Indexed: 02/05/2023] Open
Abstract
The MET oncogene encodes the tyrosine kinase receptor for hepatocyte growth factor/scatter factor (HGF), known to stimulate invasive growth of epithelial cells. MET is overexpressed in a significant percentage of human cancers and is amplified during the transition between primary tumors and metastasis. To investigate whether this oncogene is directly responsible for the acquisition of the metastatic phenotype, we exploited a single-hit oncogenic version of MET, able to transform and to confer invasive and metastatic properties to nontumorigenic cells, both in vitro and in nude mice. We mutagenized the signal transducer docking site of Met (Y1349VHVX3Y1356VNV), which has the uncommon property of binding and activating multiple src homology region 2 (SH2)-containing intracellular effectors. Notably, a point mutation (H1351 --> N) increased the transforming ability of the oncogene but abolished its metastatic potential. This mutation duplicates the Grb2 binding site, super-activating the Ras pathway and preventing the binding of the other intracellular transducers. Complementation in trans with another nonmetastatic mutant (N1358 --> H), recruiting all the transducers downstream to Met except Grb2, rescued the invasive-metastatic phenotype. It is concluded that the metastatic potential of the MET oncogene relies on the properties of its multifunctional docking site, and that a single point mutation affecting signal transduction can dissociate neoplastic transformation from metastasis.
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Affiliation(s)
- S Giordano
- Institute for Cancer Research, University of Torino Medical School, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Italy.
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Li H, Zhen Z, Wang G, Wu Y. [The developement of a new torque experiment device for biomaterials]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 1997; 14:255-6, 268. [PMID: 11326844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
This paper introduces a biomaterial torque experiment apparatus which consists of AST486 computer, photodiode array, code device interface circuit, and magnetoelectric motional coil structure. According to experimental conditions, the computer sends out signal to the coil which under the magnetic field is activated to produce a series of desired torque and bring the sample to deflect. Angular displacement is measured by photodiode array and code device system. The whole system has good dynamics and high precision and could finish a series of torque experiment for biomaterials, and AST486 computer can automatically conduct signals analyzing and data processing.
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Affiliation(s)
- H Li
- Dept. BME, Sun Yat-sen University of Medical Sciences, Guang Zhou 510089
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Ponzetto C, Zhen Z, Audero E, Maina F, Bardelli A, Basile ML, Giordano S, Narsimhan R, Comoglio P. Specific uncoupling of GRB2 from the Met receptor. Differential effects on transformation and motility. J Biol Chem 1996; 271:14119-23. [PMID: 8662889 DOI: 10.1074/jbc.271.24.14119] [Citation(s) in RCA: 122] [Impact Index Per Article: 4.4] [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: 02/01/2023] Open
Abstract
The biological effects of hepatocyte growth factor/scatter factor are mediated by autophosphorylation of its receptor, the Met tyrosine kinase, on two carboxyl-terminal tyrosines. These phosphotyrosines (Y1349VHVNATY1356VNV) are multifunctional docking sites for several effectors. Grb2, the adaptor for the Ras guanyl-nucleotide exchanger SOS, binds to Tyr1356 in the YVNV motif. By site-directed mutagenesis we either abrogated or duplicated the Grb2 consensus, without interfering with the other effectors. Loss of the link with Grb2 severely impaired transformation. The same mutation, however, had no effect on the "scattering" response, indicating that the level of signal which can be reached by Grb2-independent routes is permissive for motility. Duplication of the Grb2 binding site enhanced transformation and left motility unchanged. Thus, two Met-mediated biological responses, motility and growth, can be dissociated on the basis of their differential requirement for a direct link with Ras.
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Affiliation(s)
- C Ponzetto
- Department of Biomedical Sciences and Human Oncology, Università di Torino, 10126 Torino, Italy
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Zhen Z, Guo Y, Zhang Z. [Microthrombi in coronary heart disease]. Zhonghua Yi Xue Za Zhi 1995; 75:266-9, 318. [PMID: 7656157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Of 180 patients with coronary heart disease (CHD) 43 (23.9%) showed in microthrombi conjunctival microcirculation. We compared the healthy subjects with the patients with microthrombi and thrombi-free as well as with the patients with microthrombi pre- and post-treatment of heparin or salvia miltiorrhizae. The formation and the number of microthrombi in the CHD patients were closely related to symptoms, ECGS, plasma TXB2, 6-kero-PGF1a and other indexes on hemodynamics. Follow-up of the patients with microthrombi revealed that their death rate was higher than that of CHD patients without microthrombi, especially in the sudden deaths. We consider that microthrombi may be regarded as an important index of the state, therapeutic efficacy, and prognosis of the CHD patients. The use of heparin may certainly be based on the condition of the microthrombi in the microcirculation of CHD patients.
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Pelicci G, Giordano S, Zhen Z, Salcini AE, Lanfrancone L, Bardelli A, Panayotou G, Waterfield MD, Ponzetto C, Pelicci PG. The motogenic and mitogenic responses to HGF are amplified by the Shc adaptor protein. Oncogene 1995; 10:1631-8. [PMID: 7731718] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The receptor of Hepatocyte Growth Factor-Scatter Factor (HGF) is a tyrosine kinase which regulates cell motility and growth. After ligand-induced tyrosine phosphorylation, the HGF receptor associates with the Shc adaptor, via the SH2 domain. Site-directed mutagenesis of the HGF receptor indicates that phosphotyrosines Y1349VHV and Y1356VNV can work as docking sites for Shc. The Kd of this interaction, measured in real time using synthetic phosphopeptides and recombinant Shc on a BIAcore biosensor, is 150 nm for both sites. After stimulation of the HGF receptor, Shc is phosphorylated on Y317VNV, generating an high affinity binding site for Grb2 (Kd = 15 nM). This duplicates the high affinity binding site for Grb2 present on the HGF receptor (Y1356VNV). Thus HGF stimulation can trigger the Ras pathway by recruiting Grb2 both directly through the receptor, and indirectly, through Shc. Overexpression of wild-type Shc, but not of the Y317-->F mutant, enhances cell migration and growth in response to HGF. These data show that Shc is a relevant substrate of the HGF receptor, and works as an 'amplifier' of the motogenic as well as of the mitogenic response.
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Affiliation(s)
- G Pelicci
- Istituto di Clinica Medica 1, University of Perugia, Italy
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Zhen Z. [Tendency, features and cultural background of modern medicine in China]. Zhonghua Yi Shi Za Zhi 1995; 25:12-8. [PMID: 11639630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The new tendency and features of development of medicine in modern China is discussed on the social and cultural background, which bears a dual character of both advancement and backwardness. By analysing the features of modern Chinese civilization, it is emphasized that modern China's medicine was developed on an extremely complex social and cultural background. It was not only restricted within the cultural framework but also governed by the intrinsic rule of medicine itself. This paper also mentions the five features and three tendencies of medicine based on historical facts, which reflects definitely the objective rules of modern Chinese medicine. It is these rules that links premodern and modern medicine. The work of contemporary China is in line with these rules.
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Zhen Z, Giordano S, Longati P, Medico E, Campiglio M, Comoglio PM. Structural and functional domains critical for constitutive activation of the HGF-receptor (Met). Oncogene 1994; 9:1691-7. [PMID: 8183564] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The MET gene, encoding the tyrosine kinase receptor for Hepatocyte Growth Factor, is a potentially harmful oncogene overexpressed in a significant fraction of human cancers. To study the molecular mechanisms responsible for oncogenic activation, the biochemical and biological properties of a number of MET constructs were analysed. The native heterodimeric receptor (alpha beta), the beta chain alone, as well as a kinase defective mutant did not transform rodent fibroblasts upon transfection. The cytoplasmic domain, truncated immediately below the transmembrane region, acquired constitutive tyrosine kinase activity in vivo, produced foci of transformation, and was tumorigenic in nude mice. Removal of the first 39 amino acids of the juxtamembrane domain resulted in loss of constitutive activation in vivo and transforming potential, without impairment of the in vitro kinase activity. Replacement of the juxtamembrane domain with 5' TPR sequences restored constitutive kinase activation and transforming properties. Site-directed mutagenesis of either of the two tyrosine residues involved in the positive regulation of the catalytic activity upon phosphorylation (Y1234 or Y1235 in the kinase domain of the HGF receptor), strongly impaired TRP-MET transforming potential. These data show that: (1) the truncated cytoplasmic HGF receptor has constitutive kinase activity and is oncogenic; (2) the first 39 amino acids of the juxtamembrane domain and (3) the regulatory tyrosines in the catalytic domain are required to unleash its transforming potential.
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Affiliation(s)
- Z Zhen
- Department of Biomedical Sciences and Oncology, University of Torino Medical School, Italy
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Ponzetto C, Bardelli A, Zhen Z, Maina F, dalla Zonca P, Giordano S, Graziani A, Panayotou G, Comoglio PM. A multifunctional docking site mediates signaling and transformation by the hepatocyte growth factor/scatter factor receptor family. Cell 1994; 77:261-71. [PMID: 7513258 DOI: 10.1016/0092-8674(94)90318-2] [Citation(s) in RCA: 752] [Impact Index Per Article: 25.1] [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: 01/25/2023]
Abstract
Signaling by tyrosine kinase receptors is mediated by selective interactions between individual Src homology 2 (SH2) domains of cytoplasmic effectors and specific phosphotyrosine residues in the activated receptor. Here, we report the existence in the hepatocyte growth factor/scatter factor (HGF/SF) receptor of a multifunctional docking site made of the tandemly arranged degenerate sequence YVH/NV. Phosphorylation of this site mediates intermediate- to high-affinity interactions with multiple SH2-containing signal transducers, including phosphatidylinositol 3-kinase, phospholipase C gamma, pp60c-src, and the GRB-2-Sos complex. Mutation of the two tyrosines results in loss of biological function, as shown by abrogation of the transforming activity in the oncogenic counterpart of the receptor. The same bidentate motif is conserved in the evolutionarily related receptors Sea and Ron, suggesting that in all members of the HGF/SF receptor family, signal transduction is channeled through a multifunctional binding site.
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Affiliation(s)
- C Ponzetto
- Department of Biomedical Sciences and Oncology, University of Torino Medical School, Italy
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Giordano S, Zhen Z, Medico E, Gaudino G, Galimi F, Comoglio PM. Transfer of motogenic and invasive response to scatter factor/hepatocyte growth factor by transfection of human MET protooncogene. Proc Natl Acad Sci U S A 1993; 90:649-53. [PMID: 8380644 PMCID: PMC45721 DOI: 10.1073/pnas.90.2.649] [Citation(s) in RCA: 127] [Impact Index Per Article: 4.1] [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: 01/30/2023] Open
Abstract
The MET protooncogene encodes p190MET, a tyrosine kinase which is the receptor for a molecule known as scatter factor or hepatocyte growth factor (SF/HGF). This molecule has different biological activities, including stimulation of cell motility, promotion of matrix invasion and, in some cells, mitogenesis. We have cloned the full-length MET cDNA and transfected it into NIH 3T3 fibroblasts. Stable transfectants expressed the p190MET receptor together with two previously described truncated forms of 140 and 130 kDa lacking the tyrosine kinase domain. All three forms bound radiolabeled SF/HGF. The factor stimulated tyrosine kinase activity of the transfected p190MET and induced changes in cell shape, migration in Boyden chambers, and invasion of collagen matrices in vitro. The motile and invasive phenotype was transient and strictly dependent on the presence of SF/HGF. The factor did not stimulate either cell growth or thymidine incorporation in transfected cells, while it promoted colony formation in soft agar in the presence of 5% fetal calf serum. These data show that, in the presence of its ligand, the MET receptor expressed in fibroblasts induces cells to pursue a motogenic-invasive rather than a proliferative program.
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Affiliation(s)
- S Giordano
- Department of Biomedical Sciences and Oncology, University of Torino Medical School, Italy
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Affiliation(s)
- S Giordano
- Department of Biomedical Sciences and Oncology, University of Torino Medical School, Italy
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Zhen Z, Mares D. A simple extraction and one-step SDS–PAGE system for separating HMW And LMW glutenin subunits of wheat and high molecular weight proteins of rye. J Cereal Sci 1992. [DOI: 10.1016/s0733-5210(09)80057-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li H, Zhen Z, Zeng X, Zeng L, Ke F, Yang H. [Small-airway lesions induced by inhalation of asbestos dust in dogs--pathological and aetiological studies]. Hua Xi Yi Ke Da Xue Xue Bao 1991; 22:46-50. [PMID: 1774036] [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: 12/28/2022]
Abstract
This paper presents the pathological changes of the small airways of dogs inhaling asbestos dust in the workshop of Xin Kong Asbestos Mine for 1 to 3 years. Dogs of the experimental group showed that variable degrees of dust deposition and fibrous tissue reaction were found in all the three types of the small airways-respiratory bronchioles, alveolar ducts and membranous bronchioles of both lungs. The lesions in the lung increased with the duration of exposure. These changes in the canine small airways resulting from asbestos dust were very much similar to those of the humans. In addition, deposited dust collected from the workshop of the asbestos mine, and 50 dust particles selected randomly in foci were identified in situ by energy dispersive X-ray analysis. Findings demonstrated that the majority of the dust particles in the foci was principally mixed silicate dust. Among them asbestos dust predominated absolutely, and there were more amphiboles than chrysotiles. Therefore, it is concluded that the small airway lesions induced in the dogs are mainly due to mixed asbestos dust, and that there appears to exist a dose-response relationship.
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Affiliation(s)
- H Li
- School of Public Health, Xin Kang Chrysotile Mine
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He Z, Han S, Zhen Z, Ding X, Liang S. [The clinical use of sodium hyaluronate eyedrops as a substitute for tears]. Yan Ke Xue Bao 1990; 6:111-2. [PMID: 2289573] [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: 12/31/2022]
Abstract
The present paper reports on the curative effect of the 0.1% Sodium hyaluronate (Na-HA) eyedrops jointly manufactured by Guangzhou Red Cross Hospital and Guangzhou Institute of Medical & Pharmaceutical Industry. 70 cases were studied. There were kerato-conjunctivitis sicca, lagophthalmos corneal fluorescein diffuse punctate epithelial lesion caused by contact lens, and keratitis punctata superficialis. The results showed effective treatment which occupied 95.7%. In the discussion, the authors point out that Na-HA has the same stagnatisity and elasticity as biotears because of its adhesion to the corneal epithelium. Moreover, it has the water-retaining microsponge action similar to that of mucopolysaccharide. Hence, Na-HA has protective effects on corneal epithelium. Finally, the authors conclude that Na-HA eyedrop is so far the most ideal substitute for tears and superior to other artificial tears.
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Affiliation(s)
- Z He
- Department of Ophthalmology, Guangzhou Red Cross Hospital, China
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Zhen Z, Macek J. Investigation of avoided crossings in the adiabatic hyperspherical potential curves of the helium atom. Phys Rev A 1990; 41:4696-4703. [PMID: 9903688 DOI: 10.1103/physreva.41.4696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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