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Wu H, Chen L, Lu K, Liu Y, Lu W, Jiang J, Weng C. HMGB2 Deficiency Mitigates Abdominal Aortic Aneurysm by Suppressing Ang-II-Caused Ferroptosis and Inflammation via NF- κβ Pathway. Mediators Inflamm 2023; 2023:2157355. [PMID: 38148870 PMCID: PMC10751175 DOI: 10.1155/2023/2157355] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/13/2023] [Accepted: 10/20/2023] [Indexed: 12/28/2023] Open
Abstract
Background Ferroptosis is a new form of cell death, which is closely related to the occurrence of many diseases. Our work focused on the mechanism by which HMGB2 regulate ferroptosis and inflammation in abdominal aortic aneurysm (AAA). Methods Reverse transcription-quantitative polymerase chain reaction and western blot were utilized to assess HMGB2 levels. CCK-8 and flow cytometry assays were utilized to measure cell viability and apoptosis. We detected reactive oxygen species generation, Fe2+ level, and ferroptosis-related protein levels in Ang-II-treated VSMCs, which were typical characteristics of ferroptosis. Finally, the mice model of AAA was established to verify the function of HMGB2 in vivo. Results Increased HMGB2 level was observed in Ang-II-treated VSMCs and Ang-II-induced mice model. HMGB2 depletion accelerated viability and impeded apoptosis in Ang-II-irritatived VSMCs. Moreover, HMGB2 deficiency neutralized the increase of ROS in VSMCs caused by Ang-II. HMGB2 silencing considerably weakened Ang-II-caused VSMC ferroptosis, as revealed by the decrease of Fe2+ level and ACSL4 and COX2 levels and the increase in GPX4 and FTH1 levels. Furthermore, the mitigation effects of shHMGB2 on Ang-II-induced VSMC damage could be counteracted by erastin, a ferroptosis agonist. Mechanically, HMGB2 depletion inactivated the NF-κβ signaling in Ang-II-treated VSMCs. Conclusions Our work demonstrated that inhibition of HMGB2-regulated ferroptosis and inflammation to protect against AAA via NF-κβ signaling, suggesting that HMGB2 may be a potent therapeutic agent for AAA.
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Affiliation(s)
- Hao Wu
- Department of Vascular Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, 158 Shangtang Road, Hangzhou, Zhejiang, China
| | - Legao Chen
- Department of Vascular Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, 158 Shangtang Road, Hangzhou, Zhejiang, China
| | - Kaiping Lu
- Department of Vascular Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, 158 Shangtang Road, Hangzhou, Zhejiang, China
| | - Yi Liu
- Department of Vascular Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, 158 Shangtang Road, Hangzhou, Zhejiang, China
| | - Weiqin Lu
- Department of Vascular Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, 158 Shangtang Road, Hangzhou, Zhejiang, China
| | - Jinsong Jiang
- Department of Vascular Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, 158 Shangtang Road, Hangzhou, Zhejiang, China
| | - Chao Weng
- Department of Vascular Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, 158 Shangtang Road, Hangzhou, Zhejiang, China
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Chen LG, Cui Y, Lu WQ, Wu H, Jiang JS, Ding KF. The enigmatic helicase DHX9 as a candidate prognostic biomarker for resected pancreatic ductal adenocarcinoma. Front Oncol 2022; 12:1066717. [PMID: 36578944 PMCID: PMC9791203 DOI: 10.3389/fonc.2022.1066717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 11/14/2022] [Indexed: 12/14/2022] Open
Abstract
Background Pancreatic ductal adenocarcinoma (PDAC) remains one of the most lethal malignancies, and current therapies have limited efficacy on PDAC. The DEAH-box helicase 9 (DHX9) is widely reported to influence cell biological behavior via regulating DNA replication, genomic stability, transcription, translation, and microRNA biogenesis. However, the prognostic role of DHX9 in PDAC remains unclear. Thus, the objective of this study is to investigate the prognostic value of DHX9 expression in PDAC patients. Methods Tumor specimens from PDAC patients with surgical resection were obtained, and DHX9 was stained and analyzed in this study. Univariate and multivariate Cox regression analyses were utilized to identify independent risk factors of overall survival (OS) and recurrence-free survival (RFS). The prognostic nomograms for predicting OS and RFS were established to obtain superior predictive power. Results Among the enrolled 110 patients, 61 patients were identified as having high expression of DHX9. The correlation analysis revealed that higher DHX9 expression in PDAC was prone to have advanced N stage (p = 0.010) and TNM stage (p = 0.017). For survival, the median OS (21.0 vs. 42.0 months, p < 0.001) and RFS (12.0 vs. 24.0 months, p < 0.001) of patients in the high DHX9 group were significantly shorter than those in the low DHX9 group. Within the univariate and multivariate analyses, American Joint Committee on Cancer (AJCC) N stage (p = 0.036) and DHX9 expression (p = 0.041) were confirmed as independent prognostic factors of OS, while nerve invasion (p = 0.031) and DHX9 expression (p = 0.005) were independent prognostic factors of RFS. Finally, the novel prognostic nomograms for OS and RFS were established and showed superior predictive accuracy. Conclusion This study identified the independent prognostic value of DHX9 for RFS and OS in resected PDAC patients, and higher DHX9 expression was prone to have an earlier recurrence and shorter OS. Therefore, DHX9 may be a promising and valuable biomarker and a potential target for treating PDAC. More accurate and promising predictive models would be achieved when DHX9 is incorporated into nomograms.
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Affiliation(s)
- Le-gao Chen
- Department of Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China,General Surgery, Cancer Center, Department of Vascular Surgery, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, China
| | - Ying Cui
- Cancer Center, Department of Nuclear Medicine, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, China
| | - Wei-qin Lu
- General Surgery, Cancer Center, Department of Vascular Surgery, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, China
| | - Hao Wu
- General Surgery, Cancer Center, Department of Vascular Surgery, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, China
| | - Jin-song Jiang
- General Surgery, Cancer Center, Department of Vascular Surgery, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, China,*Correspondence: Ke-feng Ding, ; Jin-song Jiang,
| | - Ke-feng Ding
- Department of Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China,*Correspondence: Ke-feng Ding, ; Jin-song Jiang,
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3
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Zhao W, Chen L, Lin Y, He H, Ma H, Hu Q, Yang W, Gao F, Chen X. Association of Homocysteine and Insulin Resistance with Increased Risk of Mortality in a Nondiabetic Population: Third National Health and Nutrition Examination Survey. Metab Syndr Relat Disord 2022; 20:255-263. [PMID: 35467972 DOI: 10.1089/met.2021.0119] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Wenyan Zhao
- Department of General Practice, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Legao Chen
- Department of Vascular Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Yan Lin
- Department of General Practice, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Huibo He
- Department of General Practice, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Honglei Ma
- Department of General Practice, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Qian Hu
- Department of General Practice, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Wei Yang
- Department of General Practice, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Faliang Gao
- Department of Neurosurgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Xi Chen
- Department of General Practice, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
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Tu Y, Zhou X, Shao L, Zheng J, Wang J, Wang Y, Tong W, Wang M, Wu J, Zhu J, Yan R, Ji Y, Chen L, Zhu D, Wang H, Chen S, Liu R, Lin J, Zhang J, Huang H, Zhao Y, Ge M. Predicting Progression of COVID-19 Infection to Prioritize Medical Resource Allocation: A Novel Triage Model Based on Patient Characteristics and Symptoms at Presentation. Front Public Health 2021; 9:610280. [PMID: 34046384 PMCID: PMC8144294 DOI: 10.3389/fpubh.2021.610280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 03/17/2021] [Indexed: 01/08/2023] Open
Abstract
Background: The COVID-19 global pandemic has posed unprecedented challenges to health care systems all over the world. The speed of the viral spread results in a tsunami of patients, which begs for a reliable screening tool using readily available data to predict disease progression. Methods: Multicenter retrospective cohort study was performed to develop and validate a triage model. Patient demographic and non-laboratory clinical data were recorded. Using only the data from Zhongnan Hospital, step-wise multivariable logistic regression was performed, and a prognostic nomogram was constructed based on the independent variables identifies. The discrimination and calibration of the model were validated. External independent validation was performed to further address the utility of this model using data from Jinyintan Hospital. Results: A total of 716 confirmed COVID-19 cases from Zhongnan Hospital were included for model construction. Men, increased age, fever, hypertension, cardio-cerebrovascular disease, dyspnea, cough, and myalgia are independent risk factors for disease progression. External independent validation was carried out in a cohort with 201 cases from Jinyintan Hospital. The area under the curve (AUC) was 0.787 (95% confidence interval [CI]: 0.747-0.827) in the training group and 0.704 (95% CI: 0.632-0.777) in the validation group. Conclusions: We developed a novel triage model based on basic and clinical data. Our model could be used as a pragmatic screening aid to allow for cost efficient screening to be carried out such as over the phone, which may reduce disease propagation through limiting unnecessary contact. This may help allocation of limited medical resources.
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Affiliation(s)
- Yuexing Tu
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | | | - Lina Shao
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Jiayin Zheng
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Jiafeng Wang
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Yixin Wang
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Weiwei Tong
- Gennlife (Beijing) Technology Co. Ltd., Beijing, China
| | - Mingshan Wang
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Jia Wu
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Junpeng Zhu
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Rong Yan
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Yemin Ji
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Legao Chen
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Di Zhu
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Huafang Wang
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Sheng Chen
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Renyang Liu
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Jingyang Lin
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Jun Zhang
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Haijun Huang
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Yan Zhao
- Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Minghua Ge
- Zhejiang Provincial People's Hospital, Hangzhou, China
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Wang J, Peng C, Zhao Y, Ye R, Hong J, Huang H, Chen L. Application of a Robotic Tele-Echography System for COVID-19 Pneumonia. J Ultrasound Med 2021; 40:385-390. [PMID: 32725833 DOI: 10.1002/jum.15406] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/04/2020] [Accepted: 06/09/2020] [Indexed: 05/20/2023]
Abstract
To date, coronavirus disease 2019 (COVID-19) has infected millions of people worldwide. Ultrasound plays an indispensable role in the diagnosis, monitoring, and follow-up of patients with COVID-19. In this study, we used a robotic tele-echography system based on a 5G communication network for remote diagnosis. The system has great potential for lung, heart, and vasculature information, medical staff protection, and resource sharing, can be a valuable tool for treating patients during the pandemic, and can be expected to expand to more specialized fields.
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Affiliation(s)
- Jing Wang
- Department of Medical Ultrasound, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Chengzhong Peng
- Department of Medical Ultrasound, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yan Zhao
- Emergency Center, Hubei Clinical Research Center for Emergency and Resuscitation, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Ruizhong Ye
- Department of Medical Ultrasound, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Jun Hong
- Intensive Care Unit, Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Haijun Huang
- Department of Infectious Disease, Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Legao Chen
- Department of Vascular Surgery, Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
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Zou J, Wang WQ, Dai CF, Shi HB, Liu AG, Chen LG, Li YH, Pan C, Hu Y, Lu JP, Wu H. [Technology and clinical application of detecting endolymphatic hydrops in Meniere's disease using gadolinium-enhanced MRI]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:869-877. [PMID: 32911894 DOI: 10.3760/cma.j.cn115330-20200420-00312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J Zou
- Department of Otolaryngology Head and Neck Surgery, Center for Otolaryngology Head and Neck Surgery of Chinese PLA, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - W Q Wang
- Department of Otology and Skull Base Surgery, Hearing Research Key Lab of Health Ministry of China, Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai 200031, China
| | - C F Dai
- Department of Otology and Skull Base Surgery, Hearing Research Key Lab of Health Ministry of China, Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai 200031, China
| | - H B Shi
- Department of Otorhinolaryngology Head and Neck Surgery, the Sixth People's Hospital, Institute of Otorhinolaryngology, Shanghai Jiao Tong University, Oriental Institute of Otorhinolaryngology of Shanghai, Shanghai 200233, China
| | - A G Liu
- Department of Otolaryngology Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - L G Chen
- Department of Medical Imaging, National Key Discipline, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Y H Li
- Department of Radiology, the Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200233, China
| | - C Pan
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y Hu
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - J P Lu
- Department of Medical Imaging, National Key Discipline, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - H Wu
- Department of Otorhinolaryngology Head and Neck Surgery, the Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
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Wang J, Zhang J, Tu Y, Zhou X, Huang H, Shao L, Chen L, Zhao Y, Ge M. Cancer patients in SARS-CoV-2 infection: a single-center experience from Wuhan. J Cancer 2020; 11:6243-6247. [PMID: 33033507 PMCID: PMC7532501 DOI: 10.7150/jca.47065] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/11/2020] [Indexed: 12/17/2022] Open
Abstract
Background: The Coronavirus disease 2019 (COVID-19) global pandemic has posed unprecedented challenges to the health-care systems all over the world. Among the booming literatures about COVID-19, there is yet a paucity of study addressing the association between COVID-19 and cancer, which is a rare comorbidity of COVID-19, as well as consensus for treatment of cancer in this pandemic. Methods: In this retrospective, single-center cohort study, information of all inpatient cases with laboratory-confirmed COVID-19 who had treatment outcome were collected from the designated departments in Zhongnan Hospital of Wuhan University, Wuhan, China on March 10, 2020. Demographic data, clinical information, and treatment outcomes were extracted from electronic medical records. Severe events were defined as admission to intensive care unit (ICU), the use of mechanical ventilation, or death. Result: A total of 716 patients with laboratory-confirmed COVID-19 infection were identified. Among them, a total of 12 cases (1.7%, 95% CI: 0.7%-2.6%) had history of cancer with 4 cases (33%) experienced severe events. Compared with cases without cancer, patients with cancer have higher risks of severe events (33% vs 7.7%, p=0.012) and deaths (25% vs 3.6%, p=0.009). Multivariable logistic regression model showed that cancer was independently associated with increased odds of severe events after adjusting for other risk factors (OR 6.51, 95% CI 1.72-24.64; p=0.006). Among COVID-19 patients with cancer, we found that patients older than 60 years (75%), with other comorbidities (50%), or experiencing anticancer treatment in past month (42.9%) had a numerically higher incidence of severe events. Conclusion: Cancer is a rare comorbidity of patients with COVID-19; however, it cannot be overemphasized due to its poorer outcomes. We propose that personalized treatment recommendation for cancer patients should be addressed during COVID-19 pandemic, along with meticulous personal protective protocols for them to mitigate the risk of SARS-CoV-2 infection.
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Affiliation(s)
- Jiafeng Wang
- The 2nd Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
- Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Jun Zhang
- Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
- Hangzhou Medical School People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Yuexing Tu
- Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
- Hangzhou Medical School People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Xianlong Zhou
- Emergency Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430071, China
- Hubei Clinical Research Center for Emergency and Resuscitation, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430071, China
| | - Haijun Huang
- Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
- Hangzhou Medical School People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Lina Shao
- Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
- Hangzhou Medical School People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Legao Chen
- Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
- Hangzhou Medical School People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Yan Zhao
- Emergency Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430071, China
- Hubei Clinical Research Center for Emergency and Resuscitation, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430071, China
| | - Minghua Ge
- Medical Aiding Team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
- Hangzhou Medical School People's Hospital, Hangzhou, Zhejiang, 310014, China
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Ye R, Zhou X, Shao F, Xiong L, Hong J, Huang H, Tong W, Wang J, Chen S, Cui A, Peng C, Zhao Y, Chen L. Feasibility of a 5G-Based Robot-Assisted Remote Ultrasound System for Cardiopulmonary Assessment of Patients With Coronavirus Disease 2019. Chest 2020; 159:270-281. [PMID: 32653568 PMCID: PMC7347315 DOI: 10.1016/j.chest.2020.06.068] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/20/2020] [Accepted: 06/27/2020] [Indexed: 02/07/2023] Open
Abstract
Background Traditional methods for cardiopulmonary assessment of patients with coronavirus disease 2019 (COVID-19) pose risks to both patients and examiners. This necessitates a remote examination of such patients without sacrificing information quality. Research Question The goal of this study was to assess the feasibility of a 5G-based robot-assisted remote ultrasound system in examining patients with COVID-19 and to establish an examination protocol for telerobotic ultrasound scanning. Study Design and Methods Twenty-three patients with COVID-19 were included and divided into two groups. Twelve were nonsevere cases, and 11 were severe cases. All patients underwent a 5G-based robot-assisted remote ultrasound system examination of the lungs and heart following an established protocol. Distribution characteristics and morphology of the lung and surrounding tissue lesions, left ventricular ejection fraction, ventricular area ratio, pericardial effusion, and examination-related complications were recorded. Bilateral lung lesions were evaluated by using a lung ultrasound score. Results The remote ultrasound system successfully and safely performed cardiopulmonary examinations of all patients. Peripheral lung lesions were clearly evaluated. Severe cases of COVID-19 had significantly more diseased regions (median [interquartile range], 6.0 [2.0-11.0] vs 1.0 [0.0-2.8]) and higher lung ultrasound scores (12.0 [4.0-24.0] vs 2.0 [0.0-4.0]) than nonsevere cases of COVID-19 (both, P < .05). One nonsevere case (8.3%; 95% CI, 1.5-35.4) and three severe cases (27.3%; 95% CI, 9.7-56.6) were complicated by pleural effusions. Four severe cases (36.4%; 95% CI, 15.2-64.6) were complicated by pericardial effusions (vs 0% of nonsevere cases, P < .05). No patients had significant examination-related complications. Interpretation Use of the 5G-based robot-assisted remote ultrasound system is feasible and effectively obtains ultrasound characteristics for cardiopulmonary assessment of patients with COVID-19. By following established protocols and considering medical history, clinical manifestations, and laboratory markers, this system might help to evaluate the severity of COVID-19 remotely.
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Affiliation(s)
- Ruizhong Ye
- Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Xianlong Zhou
- Emergency Center, Hubei Clinical Research Center for Emergency and Resuscitation, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Fei Shao
- Medical aiding team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China
| | | | - Jun Hong
- Medical aiding team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China
| | - Haijun Huang
- Medical aiding team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China
| | - Weiwei Tong
- Gennlife (Beijing) Biotechnology Co. Ltd., Haidian, Beijing, China
| | - Jing Wang
- Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Shuangxi Chen
- Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Ailin Cui
- Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Chengzhong Peng
- Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital & People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yan Zhao
- Emergency Center, Hubei Clinical Research Center for Emergency and Resuscitation, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Legao Chen
- Medical aiding team for COVID-19 in Hubei, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China.
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Pei RZ, Lu Y, Zhang PS, Liu XH, Chen D, Du XH, Sha KY, Li SY, Cao JJ, Chen LG, Zhuang XX, Tang SH. [Breakthrough of invasive fungal disease with posaconazole as primary prophylaxis after induction chemotherapy for acute myeloid leukemia]. Zhonghua Nei Ke Za Zhi 2020; 59:213-217. [PMID: 32146748 DOI: 10.3760/cma.j.issn.0578-1426.2020.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the breakthrough incidence of invasive fungal disease(IFD) and side effects of posaconazole as primary prophylaxis during induction chemotherapy for acute myeloid leukemia(AML). Methods: A total of 206 newly diagnosed AML patients admitted to our department during January 2016 and December 2018 were enrolled in the study. Exclusive criteria were as followings including patients diagnosed as acute promyelocytic leukemia; those who received intravenous antifungal therapy after admission or had history of IFD one month before induction chemotherapy, or those with functional insufficiency of vital organs and those older than 65. Forty-seven patients received posaconazole (posaconazole group), 61 cases received voriconazole (voriconazole group) and 98 cases did not receive any prophylaxis (control group) during induction chemotherapy. Prophylactic efficacy and safety between posaconazole and voriconazole were compared. Results: During induction chemotherapy, five possible cases of IFD occurred in posaconazole group (10.6%); while 11 cases (18.0%) were in voriconazole group including 7 possible, 3 probable and 1 proven. Thirty-five cases (35.7%) in control group were diagnosed as IFD including 19 possible, 11 probable and 5 proven ones. The incidences of IFD in posaconazole and voriconazole group were significantly lower than that in control group (P<0.05). The difference of posaconazole group and voriconazole group was not significant (P>0.05). The reported adverse events in posaconazole group were significantly lower than those in voriconazole group [12.8%(6/47) vs. 32.8%(20/61), P<0.05]. Conclusions: Posaconazole and voriconazole decrease IFD as primary prophylaxis during induction chemotherapy in patients with AML. The prophylactic effect of IFD with posaconazole is similar as voriconazole, but posaconazole shows better safety.
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Affiliation(s)
- R Z Pei
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, Zhejiang Province, China
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10
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Chen LG, Pei RZ, Lu Y, Zhang PS, Liu XH, Du XH, Chen D, Cao JJ, Li SY. FLT3 and FLT3-ITD gene mutations and prognosis in patients with acute myeloid leukemia. J BIOL REG HOMEOS AG 2019; 33:1855-1861. [PMID: 31718764 DOI: 10.23812/19-182-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- L G Chen
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - R Z Pei
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - Y Lu
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - P S Zhang
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - X H Liu
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - X H Du
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - D Chen
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - J J Cao
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - S Y Li
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
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Sun Y, Pan W, Zhang J, Cui Y, Wang H, Ru G, Chen L. Complex TNF-α B cell epitope MAP vaccine alleviates murine ulcerative colitis. Int J Mol Med 2019; 44:1106-1116. [PMID: 31524230 DOI: 10.3892/ijmm.2019.4271] [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] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 07/01/2019] [Indexed: 11/06/2022] Open
Abstract
The present study aimed to develop a tumor necrosis factor‑α (TNF‑α) B‑cell epitope/IL‑1β helper T lymphocyte epitope complex MAP vaccine for the alleviation of ulcerative colitis (UC) in mice. The B cell epitopes of murine TNF‑α (mTNF‑α) were predicted in silico and coupled with the universal interleukin 1β (IL‑1β) helper T‑cell epitope peptide VQGEESNDK to synthesize the eight‑branched MAP vaccine. Then, the immunological effects of the MAP vaccine were assessed in vitro and in vivo, as well as its impacts on DAI index, serum DAO levels, colon tissue tight junction protein amounts, ultrastructural changes, and MPO activity in BALB/c mice with UC. The amino acids LTLRSSSQNSSDKPV at positions 78‑92 of mTNF‑α may constitute the dominant B cell epitope. Based on this finding, an eight‑branched peptide structure, the TNF‑α B‑cell epitope/IL‑1β helper T‑cell epitope complex MAP vaccine, was synthesized. Indirect ELISA confirmed that MAP had a high affinity with commercialized mTNF‑α antibodies. Meanwhile, MAP induced high specific antibody titers in vivo, reduced the DAI score, serum MPO activity, colorectal lymph node colony count, ultrastructural injuries, colon tissue histological index score and MPO activity in UC mice, while increasing the expression levels of occludin, claudin1 and ZO1 in colon tissues. The synthetic complex MAP vaccine has good antigenicity and immunogenicity, and can alleviate UC in mouse models.
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Affiliation(s)
- Yan Sun
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China
| | - Wensheng Pan
- Department of Gastroenterology, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Jun Zhang
- Department of Gastroenterology, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Ying Cui
- Department of Nuclear Medicine, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Huiju Wang
- Key Laboratory of Gastroenterology of Zhejiang Province, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Guoqing Ru
- Department of Pathology, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Legao Chen
- Department of Vascular Surgery, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
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Tang SH, Lu Y, Zhang PS, Liu XH, Du XH, Chen D, Li SY, Cao JJ, Chen LG, Le J, Qian SY, Hong YW, Pei RZ. [Ikaros family zinc finger 1 mutation is a poor prognostic factor for adult Philadelphia chromosome positive acute lymphoblastic leukemia]. Zhonghua Nei Ke Za Zhi 2019; 58:301-306. [PMID: 30917424 DOI: 10.3760/cma.j.issn.0578-1426.2019.04.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 analyze the prognostic impact of Ikaros family zinc finger 1(IKZF1) mutation on adult Philadelphia chromosome (Ph1) positive acute lymphoblastic leukemia (ALL) patients. Methods: IKZF1 mutation was detected in 63 adult Ph1 positive ALL patients at diagnosis using capillary electrophoresis. Recruited patients were treated in our center and other three hospitals in Ningbo from January 2014 to January 2017. Clinical data were collected and retrospectively analyzed. Results: Thirty-nine (61.9%) patients were positive IKZF1 mutation in this cohort. The white blood cell (WBC) count in IKZF1 mutation group was significantly higher than that of mutation negative group [(64.6±11.3)×10(9)/L vs. (33.7±5.6)×10(9)/L, P<0.05]. Patients with WBC count over 30×10(9)/L accounted for 56.4% in IKZF1 mutation group. Complete remission (CR) rate in the IKZF1 mutation group was also lower than that of negative group after induction chemotherapy (64.1% vs. 75.0%, P>0.05). IKZF1 was a negative prognostic factor but not independent factor for survival by univariate and multivariate analyses. Patients were divided into chemotherapy and allogeneic transplantation groups. The 3-year overall survival (OS) rate and 3-year leukemia-free survival (LFS) rate in IKZF1 mutation group were significantly lower than those of negative group in both transplantation group (42.3% vs. 59.3%; 31.2% vs. 50.0%; respectively, both P<0.05) and chemotherapy group (24.8% vs. 40.0%; 19.0% vs. 34.3%; respectively, both P<0.05). Conclusion: IKZF1 mutation is a poor prognostic factor for adult Ph1 positive ALL patients.
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Affiliation(s)
- S H Tang
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - Y Lu
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - P S Zhang
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - X H Liu
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - X H Du
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - D Chen
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - S Y Li
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - J J Cao
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - L G Chen
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - J Le
- Department of Hematology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo 315040, China
| | - S Y Qian
- Department of Hematology, Ningbo No.2 Hospital, Ningbo 315010, China
| | - Y W Hong
- Department of Hematology, Ningbo Yinzhou No.2 Hospital, Ningbo 315192, China
| | - R Z Pei
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
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Shi J, Gong L, Chen L, Luo J, Song G, Xu J, Lv Z, Tao H, Xia Y, Ye Z. miR-618 Suppresses Metastasis in Gastric Cancer by Downregulating the Expression of TGF-β2. Anat Rec (Hoboken) 2019; 302:931-940. [PMID: 30737902 DOI: 10.1002/ar.24083] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 10/17/2018] [Accepted: 10/28/2018] [Indexed: 11/07/2022]
Abstract
Recent studies have demonstrated that microRNAs regulate gene expression and are related to cancer progression. Increasing evidence shows that miR-618 plays an important role in a variety of tumors, including thyroid carcinomas, breast cancer and lymphoma cancer. However, no studies have examined the expression or function of miR-618 in gastric cancer (GC). In this study, we examined the effects and molecular mechanisms of miR-618 in GC. We compared the expression levels of miR-618 in 90 paired GC tissues and adjacent noncancerous tissues. Cell cycle, apoptosis and transwell assays were performed in GC cells with miR-618 mimic or inhibitor in vitro. We first used quantitative PCR(qPCR) to show that miR-618 expression levels were downregulated in GC tissues, which showed statistical significance. Next we used transwell assays to prove that miR-618 suppressed the invasion and migration capacity of GC cells. Furthermore, screening of the miRDB and Target Scan Human databases indicated TGF-β2 as a downstream target of miR-618. In further research, we identified TGF-β2 as a target gene of miR-618 by the luciferase reporter assay. Western blot analysis confirmed that TGF-β2 expression was inversely correlated with miR-618 expression. In situ hybridization showed that miR-618 expression level was downregulated in GC tissues. In conclusion, our findings suggest that miR-618 may function as a tumor suppressor in GC and suppresses metastasis in GC by negatively regulating the transcriptional level of TGF-β2. Anat Rec, 302:931-940, 2019. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Ji Shi
- Zhejiang Province Tongde Hospital, Hangzhou, Zhejiang, China
| | - Lijie Gong
- Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China.,Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China
| | - Legao Chen
- Department of Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Jungang Luo
- Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Guangyuan Song
- Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Ji Xu
- Department of Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Zhenye Lv
- Department of Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Houquan Tao
- Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yingjie Xia
- Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Zaiyuan Ye
- Department of Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
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Tang SH, Lu Y, Zhang PS, Liu XH, Du XH, Chen D, Sha KY, Li SY, Cao JJ, Chen LG, Zhuang XX, Pei RZ, Tang XW. [Effect of FLT3-ITD with DNMT3A R882 double-mutation on the prognosis of acute myeloid leukemia after allogeneic hematopoietic stem cell transplantation]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:552-557. [PMID: 30122013 PMCID: PMC7342207 DOI: 10.3760/cma.j.issn.0253-2727.2018.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
目的 探讨FLT3-ITD和DNMT3A R882双突变对急性髓系白血病(AML)患者allo-HSCT预后的影响。 方法 使用直接测序法检测206例接受allo-HSCT的AML患者(M3和使用分子靶向药物索拉菲尼的病例除外)初诊时骨髓中常见的基因突变组套(包括FLT3-ITD、DNMT3A、c-kit、CEBPA、FLT3-TKD、NPM1),回顾性分析患者的临床资料,比较各基因突变组的移植预后。 结果 ①206例AML患者中男104例,女102例,中位年龄38(3~63)岁。FAB分型:M0 6例,M1 24例,M2 56例,M4 39例,M5 63例,M6 6例,不能分类12例。②全部206例患者根据初诊时的突变基因情况分为4组:FLT3-ITD+ DNMT3A R882+组(A组)19例,FLT3-ITD+ DNMT3A R882−组(B组)38例,FLT3-ITD−DNMT3A R882+组(C组)21例,FLT3-ITD−DNMT3A R882−组(D组)128例。四组间性别、年龄、初诊时白细胞计数、FAB分型、移植前疾病状态、染色体核型、供者类型、预处理方案及GVHD发生率比较,差异无统计学意义(P>0.05)。③A组和B、C、D组比较,2年累积复发率较高[分别为(72.2±2.6)%、(38.6±0.6)%、(36.8±1.6)%、(27.8±0.1)%,P值均<0.05],总生存率较低[分别为(30.9±13.3)%、(67.5±7.8)%、(61.4±12.4)%、(80.1±3.7)%,P值均<0.05],无白血病生存率较低[分别为(11.3±10.2)%、(47.9±8.4)%、(56.8±12.5)%、(79.7±3.6)%,P值均<0.05]。 结论 伴有FLT3-ITD与DNMT3A R882双突变的AML患者移植后累积复发率较高,总生存率和无白血病生存率较差。
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Affiliation(s)
- S H Tang
- Department of Hematology, Yinzhou People Hospital, Ningbo 315040, China
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15
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Xu WJ, Chen LG, Chen X, Liu YS, Zheng TH, Song JJ, Xu W, Li P, Zhang MQ, Xiao CX, Guleng B, Ren JL. Silencing ECHS1 attenuates the proliferation and induces the autophagy of hepatocellular carcinoma via impairing cell metabolism and activating AMPK. Neoplasma 2015; 62:872-80. [PMID: 26458321 DOI: 10.4149/neo_2015_106] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Hepatocellular carcinoma (HCC) is among the most common cancers in the world with a low survival rate. Our previous study showed Short chain enoyl-CoA hydratase (ECHS1) could bind to HBsAg (HBs) and that ECHS1's localization in mitochondria induced HepG2 cell apoptosis. However, the role of the ECHS1 in energy metabolism and autophagy during hepatocellular carcinoma development remains undefined. We aimed to determine what ECHS1 does to energy metabolism and its effects on HCC progression. We performed CCK-8, EdU assays in hepatocellular carcinoma cell lines (HepG2 and HuH7) with stable ECHS1 knock-down. ATP and NADP+/NADPH levels were measured using an colorimetric assay. Our data demonstrated that ECHS1 silencing inhibited cell proliferation and induced autophagy. ECHS1 knockdown did not increase fatty acid synthesis, but decreased cellular ATP. This resulted in AMP-activated protein kinase (AMPK) activation and induced HCC cell autophagy. Our results showed that silencing ECHS1 to attenuate proliferation and induce autophagy may make it a novel cancer therapy target.
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16
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Wang J, Wang LM, Du WL, Chen LG, Liu SH, Wu J, Zhao JX, Yang QH, Chen XH. Development of 5Ns chromosome-specific SCAR markers for utilization in future wheat breeding programs. Genetika 2014; 50:692-699. [PMID: 25715460 DOI: 10.7868/s0016675814060137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In previous studies, we developed a wheat-Psathyrostachys huashanica Keng disomic addition line 3-8-10-2, which exhibited high stripe rust resistance and could be used as a donor source for introducing novel disease resistance gene(s) into wheat in future breeding programs. It was identified using cytology, genomic in situ hybridization (GISH), EST-SSR, EST-STS and morphological analyses. However, these techniques are not suitable for breeding programs that require the rapid screening of large numbers of genotypes because they are highly technical and time-consuming. In this study, three Ns genome-specific SCAR markers were developed via random amplified polymorphic DNA (RAPD) markers. These SCAR markers were further validated using a complete set of wheat-P. huashanica disomic addition lines, which segregated the 5Ns disomic addition line individuals. Our results indicated that the SCAR markers associated with the 5Ns chromosome of P. huashanica and they provide a low cost, high efficiency, alternative tool for screening 5Ns chromosomes in a wheat background. These newly developed SCAR markers that species-specificity of the markers was proved by analysis of a wide range of cereal species, and specific for 5Ns chromosome, which should be useful in marker-assisted selection for wheat breeders who want to screen genotypes that may contain 5Ns chromatin.
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Yao HB, Xu Y, Chen LG, Guan TP, Ma YY, He XJ, Xia YJ, Tao HQ, Shao QS. AKR1B10, a good prognostic indicator in gastric cancer. Eur J Surg Oncol 2013; 40:318-24. [PMID: 24406159 DOI: 10.1016/j.ejso.2013.12.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Revised: 12/15/2013] [Accepted: 12/16/2013] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND OBJECTIVES The aim of the study was to investigate the correlation between AKR1B10 expression and clinicopathological features of gastric cancer (GC). METHODS Real-time polymerase chain reaction (RT-PCR) was performed to determine AKR1B10 mRNA expression. AKR1B10 protein levels were measured by immunohistochemistry. RESULTS RT-PCR analysis confirmed that AKR1B10 was significantly down-regulated in gastric cancer compared with paired, normal mucosa. Immunohistochemistry revealed that the percentage of AKR1B10-positive specimens was lower in gastric carcinoma compared with normal specimens. The frequency of AKR1B10-positive GC specimens was higher in patients with tumor size <5 cm, no lymph node metastasis, no distant metastasis and lower tumor stages The mean survival time for patients in the AKR1B10-positive group was significantly higher compared with the AKR1B1-negative group. The 5-year survival rate for the AKR1B10-positive group was also significantly higher than for the AKR1B1-negative group. Cox regression analysis revealed that AKR1B10 expression is an independent prognostic factor of GC. CONCLUSIONS Expression of AKR1B10 in gastric cancer was significantly associated with tumor size, lymph node metastasis, distance metastasis and TNM stage, and AKR1B10 may be a good prognostic indicator in gastric cancer.
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Affiliation(s)
- H B Yao
- Department of Gastrointestinal Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Y Xu
- Department of Gastrointestinal Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - L G Chen
- Department of Gastrointestinal Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - T P Guan
- Department of Gastrointestinal Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Y Y Ma
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, Zhejiang, China
| | - X J He
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, Zhejiang, China
| | - Y J Xia
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, Zhejiang, China
| | - H-Q Tao
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, Zhejiang, China
| | - Q S Shao
- Department of Gastrointestinal Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China.
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18
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Chen LG, Zhang C, Zhang R, Zhang XL, Dong ZC. Note: optical optimization for ultrasensitive photon mapping with submolecular resolution by scanning tunneling microscope induced luminescence. Rev Sci Instrum 2013; 84:066106. [PMID: 23822393 DOI: 10.1063/1.4811200] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report the development of a custom scanning tunneling microscope equipped with photon collection and detection systems. The optical optimization includes the comprehensive design of aspherical lens for light collimation and condensing, the sophisticated piezo stages for in situ lens adjustment inside ultrahigh vacuum, and the fiber-free coupling of collected photons directly onto the ultrasensitive single-photon detectors. We also demonstrate submolecular photon mapping for the molecular islands of porphyrin on Ag(111) under small tunneling currents down to 10 pA and short exposure time down to 1.2 ms/pixel. A high quantum efficiency up to 10(-2) was also observed.
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Affiliation(s)
- L G Chen
- HFNL, University of Science and Technology of China, Hefei, Anhui 230026, China
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19
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Yao HB, Xu Y, Chen LG, Guan TP, Ma YY, Tao HQ, Shao QS. [Expression of aldo-keto reductase family 1 member B10 in gastric cancer tissues and its clinical significance]. Zhonghua Wei Chang Wai Ke Za Zhi 2013; 16:183-187. [PMID: 23446484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVE To investigate the association of AKR1B10 expression in gastric cancer tissues with clinicopathologic features and prognosis of gastric cancer patients. METHODS Real-time polymerase chain reaction (RT-PCR) was conducted to detect AKR1B10 mRNA expression in gastric cancer and adjacent gastric mucosa tissues (n=36). AKR1B10 protein expression was measured by immunohistochemistry in primary gastric cancer tissues (n=100) and non-tumorous gastric mucosa tissues (n=70). RESULTS RT-PCR results confirmed that AKR1B10 was significantly down-regulated in gastric cancer tissues compared with that in paired adjacent mucosa [8.3% (3/36) vs. 91.7% (33/36), P=0.000]. Immunohistochemistry revealed that the percentage of AKR1B10 positive specimens in gastric carcinoma was lower than that in normal specimens [33.0% (33/100) vs. 92.9% (65/70), P=0.000]. The frequencies of positive AKR1B10 in patients was significantly correlated with tumor size (P=0.000), invasive depth (P=0.004), lymph node metastasis (P=0.028), distant metastasis (P=0.031) and TNM stages (P=0.000). The 5-year survival rate of positive AKR1B10 group was significantly higher as compared to negative group (60.6% vs. 32.8%, P<0.01). CONCLUSION The down-regulation of AKR1B10 expression in gastric cancer may be associated with the progress of gastric cancer is suggestive of poor prognosis.
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Affiliation(s)
- Hai-bo Yao
- Department of Gastrointestinal Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
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20
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Zhang C, Gao B, Chen LG, Meng QS, Yang H, Zhang R, Tao X, Gao HY, Liao Y, Dong ZC. Fabrication of silver tips for scanning tunneling microscope induced luminescence. Rev Sci Instrum 2011; 82:083101. [PMID: 21895227 DOI: 10.1063/1.3617456] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We describe a reliable fabrication procedure of silver tips for scanning tunneling microscope (STM) induced luminescence experiments. The tip was first etched electrochemically to yield a sharp cone shape using selected electrolyte solutions and then sputter cleaned in ultrahigh vacuum to remove surface oxidation. The tip status, in particular the tip induced plasmon mode and its emission intensity, can be further tuned through field emission and voltage pulse. The quality of silver tips thus fabricated not only offers atomically resolved STM imaging, but more importantly, also allows us to perform challenging "color" photon mapping with emission spectra taken at each pixel simultaneously during the STM scan under relatively small tunnel currents and relatively short exposure time.
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Affiliation(s)
- C Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, China
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Chen LG, Wang ZR, Wan CM, Xiao J, Guo L, Guo HL, Cornélissen G, Halberg F. Circadian renal rhythms influenced by implanted encapsulated hANP-producing cells in Goldblatt hypertensive rats. Gene Ther 2004; 11:1515-22. [PMID: 15284836 DOI: 10.1038/sj.gt.3302330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Renal excretion in experimental hypertensive rats implanted with encapsulated human atrial natriuretic peptide (hANP)-producing cells is circadian periodic. Chinese hamster ovary (CHO) cells transfected with the plasmid hANP-cDNA were encapsulated in biocompatible polycaprolactone capsules for intraperitoneal implantation into two-kidney, one-clip (2K1C) hypertensive rats. During a 12:12 light-dark cycle, as compared to control CHO cells, the implantation of encapsulated hANP-producing CHO cells was associated with an increase in the net excretion of water, sodium and potassium, and with a reversal of the advanced circadian phases related to renovascular hypertension in 2K1C rats. The increase in blood pressure postimplantation was delayed, and increases in renal blood flow, glomerular filtration rate, sodium output, urinary excretion and urinary cyclic GMP concentrations were also found. Implantation of encapsulated hANP-producing cells affects circadian rhythms in kidney excretion functions of 2K1C rats, and may be useful for the treatment of cardiovascular disease.
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Affiliation(s)
- L G Chen
- Department of Biomedical Engineering, School of Basic and Forensic Medicine, Sichuan University, Chengdu, PR China
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22
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Abstract
Gordonia axillaris (Roxb.) Dietrich (Theaceae) is a native to Taiwan and the leaves have been used as an astringent folk medicine. Camelliin B (CB), a macrocyclic hydrolyzable tannin, was isolated from G. axillaris and showed cytotoxic effects in human carcinoma cells. Among the target cells (SKHep-1, Ha-22T, DU-145, AGS, and HeLa), the cervical carcinoma cell line, HeLa, was more sensitive to CB than were Chang normal liver cells and primary-cultured normal gingival and cervical fibroblasts. Furthermore, the cytotoxic effects of CB showed dose-dependency at 3.2-100.0 microg/ml in HeLa for 1,24,48, and 72 h and with an IC(50) value of 46.3 microg/ml for 48 h. However, the IC(50) value of CB in primary-cultured normal cervical fibroblasts was 108.0 microg/ml. Therefore, the selectivity shown by CB was ascribed to the difference in growth speed between normal and tumor cells. HeLa cells and primary-cultured normal cervical fibroblasts were treated with 50.0 and 100.0 microg/ml CB for 48 h, respectively, and exhibited chromatin condensation, indicating the occurrence of apoptosis. Flow cytometric analysis demonstrated the presence of apoptotic cells with low DNA content, a decrease of cell population at the G(1) phase, and a concomitant increase of cell population at the G(2)/M phase. CB also caused DNA fragmentation and inhibited PARP degradation in HeLa cells. However, CB did not significantly inhibit Bcl-2 expression in HeLa cells at 50.0 microg/ml, only at 100.0 microg/ml for 48 h. These results suggest that CB induced apoptosis, without direct inhibition of Bcl-2 expression in HeLa cells.
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Affiliation(s)
- C C Wang
- Graduate Institute of Pharmacognosy Science, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, Taiwan, ROC
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23
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Hong QB, Xiang SQ, Chen KL, Chen LG. [Two complementary dominant genes controlling apomixis in genus Citrus and poncirus]. Yi Chuan Xue Bao 2001; 28:1062-7. [PMID: 11725641] [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: 02/22/2023]
Abstract
Apomixis is very common in Citrus genus and its related genus. Two monoembryonic tangerine varieties (C. reticulata Blanco) Clementine and Wilking were used as seed parents to cross with four polyembryonic orange varieties [C. sinensis (L.) Osbeck]. Both sexual and apomictic progenies were found in each F1 population with different segregation ratios. In a total of 74 Wilking progenies, 23 were monoembryonic and 51 polyembryonic and the ratio of sexual and apomictic progenies was about 1:2 tested either in each individual cross or in the whole Wilking cross combionations. In Clementine progenies, 84 were monoembryonic and 71 polyembryonic and the ratio was about 1:1 tested either in each individual cross or in the whole Clementine cross combionations. According to the results together with other data published, a possible apomixis controlling mechanism was proposed, which involves two complementary dominant genes named as A1 and A2 that control apomixis in genus Citrus and Poncirus. Trees of genotype A1-A2-, except for homozygous of dominant gene A1 (which is lethal), can produce apomixis seeds. And those of other genotypes will produce sexual seeds. The segregation and recombination of these two genes accorded with Mendel's genetic laws. The proposed mechanism could explain genotypes controlling polyembryony-monoembryony existing both in nature species and artificial hybridization progenies as well as most of the known hybridization results.
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Affiliation(s)
- Q B Hong
- Citrus Research Institute, Chinese Academy of Agricultural Science, Chongqing Beibei 400712, China
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Masuda D, Nohara R, Hirai T, Kataoka K, Chen LG, Hosokawa R, Inubushi M, Tadamura E, Fujita M, Sasayama S. Enhanced external counterpulsation improved myocardial perfusion and coronary flow reserve in patients with chronic stable angina; evaluation by(13)N-ammonia positron emission tomography. Eur Heart J 2001; 22:1451-8. [PMID: 11482918 DOI: 10.1053/euhj.2000.2545] [Citation(s) in RCA: 120] [Impact Index Per Article: 5.2] [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] [Indexed: 11/11/2022] Open
Abstract
AIMS The mechanism by which enhanced external counterpulsation therapy exerts its beneficial effects on chronic and symptomatic stable angina is largely unknown. To clarify the mechanism of action of enhanced external counterpulsation, we used(13)N-ammonia positron emission tomography to evaluate myocardial perfusion. METHODS AND RESULTS This was not a randomized controlled study. Eleven patients (eight male, age: 61.6+/-9.7) with angina pectoris underwent enhanced external counterpulsation therapy for 35 1 h sessions. They underwent a treadmill exercise test and(13)N-ammonia positron emission tomography, both at rest and with dipyridamole, before and after enhanced external counterpulsation therapy. Neurohumoral factors and nitric oxide were also evaluated. Myocardial perfusion increased at rest after therapy (0.69+/-0.27 to 0.85+/-0.47 ml x min(-1) x g(-1), P<0.05). In ischaemic regions, particularly the anterior region, myocardial perfusion at rest and with dipyridamole and coronary flow reserve improved significantly after therapy (at rest: 0.71+/-0.26 to 0.86+/-0.31;P<0.05, with dipyridamole: 1.26+/-0.65 to 1.84+/-0.94;P<0.02, coronary flow reserve: 1.75+/-0.24 to 2.08+/-0.28;P<0.04). Exercise time was prolonged and the time to 1-mm ST depression improved markedly (P<0.01). After therapy, nitric oxide levels increased (P<0.02) and neurohumoral factors decreased. CONCLUSIONS Enhanced external counterpulsation therapy improved myocardial perfusion at rest and with dipyridamole and was associated with an increased exercise tolerance with(13)N-ammonia positron emission tomography and increased nitric oxide levels. These results suggest that one of the enhanced external counterpulsation mechanisms is development and recruitment of collateral vessels.
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Affiliation(s)
- D Masuda
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Japan
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Hirai T, Nohara R, Ogoh S, Chen LG, Kataoka K, Li XH, Fujita M, Matsumori A, Taguchi S, Sasayama S. Serial evaluation of fatty acid metabolism in rats with myocardial infarction by pinhole SPECT. J Nucl Cardiol 2001; 8:472-81. [PMID: 11481570 DOI: 10.1067/mnc.2001.114519] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Iodine 123-labeled 15-(p-iodophenyl)-3-(R,S)-methylpentadecanoic acid (BMIPP) is mainly trapped in the myocardium as triglyceride, depending on the adenosine triphosphate level. Ten percent to 20% of it is metabolized through alpha-oxidation after beta-oxidation; however, the precise mechanism of the regulatory pathways of BMIPP is yet to be clarified. METHODS AND RESULTS A brief left coronary artery occlusion (10-30 minutes) was performed in 28 male Wistar-Kyoto rats. Dual single photon emission computed tomography images of BMIPP and thallium 201 were obtained 3 days and 24 days after the operation. The activities of 3-hydroxyacyl-coenzyme A dehydrogenase (HAD), citrate synthase (CS), and alpha-glycerol-phosphate dehydrogenase (GPD) were then measured in both ischemic and nonischemic regions. BMIPP and Tl-201 chloride severity scores were also evaluated conventionally. CS and HAD levels were significantly lower in the ischemic region than in the nonischemic region in the chronic group (CS, 102.9 +/- 28.1 vs 138.7 +/- 33.7 micromol/g/min, respectively, P =.0051; HAD, 54.7 +/- 20.1 vs 78.6 +/- 18.7 micromol/g/min, respectively, P =.0031). There was no difference in GPD between the ischemic and nonischemic regions. The BMIPP severity score had closer inverse relations with HAD (acute, r = -0.82; chronic, r = -0.80) and CS (acute, r = -0.87; chronic, r = -0.81), but not with GPD, than did Tl-201 chloride severity score. CONCLUSIONS BMIPP imaging correlates well with the activities of HAD and CS, suggesting that a decrease in BMIPP uptake reflects deterioration of both fatty acid metabolism and citrate cycle and shows information other than regional myocardial perfusion.
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Affiliation(s)
- T Hirai
- Department of Cardiovascular Medicine, Graduate School of Medicine, and Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
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Chen YC, Shen SC, Chen LG, Lee TJ, Yang LL. Wogonin, baicalin, and baicalein inhibition of inducible nitric oxide synthase and cyclooxygenase-2 gene expressions induced by nitric oxide synthase inhibitors and lipopolysaccharide. Biochem Pharmacol 2001; 61:1417-27. [PMID: 11331078 DOI: 10.1016/s0006-2952(01)00594-9] [Citation(s) in RCA: 219] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We previously reported that oroxylin A, a polyphenolic compound, was a potent inhibitor of lipopolysaccharide (LPS)-induced expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). In the present study, three oroxylin A structurally related polyphenols isolated from the Chinese herb Huang Qui, namely baicalin, baicalein, and wogonin, were examined for their effects on LPS-induced nitric oxide (NO) production and iNOS and COX-2 gene expressions in RAW 264.7 macrophages. The results indicated that these three polyphenolic compounds inhibited LPS-induced NO production in a concentration-dependent manner without a notable cytotoxic effect on these cells. The decrease in NO production was in parallel with the inhibition by these polyphenolic compounds of LPS-induced iNOS gene expression. However, these three compounds did not directly affect iNOS enzyme activity. In addition, wogonin, but not baicalin or baicalein, inhibited LPS-induced prostaglandin E2 (PGE2) production and COX-2 gene expression without affecting COX-2 enzyme activity. Furthermore, N-nitro-L-arginine (NLA) and N-nitro-L-arginine methyl ester (L-NAME) pretreatment enhanced LPS-induced iNOS (but not COX-2) protein expression, which was inhibited by these three polyphenolic compounds. Wogonin, but not baicalin or baicalein, similarly inhibited PGE2 production and COX-2 protein expression in NLA/LPS or L-NAME/LPS-co-treated RAW 264.7 cells. These results indicated that co-treatment with NOS inhibitors and polyphenolic compounds such as wogonin effectively blocks acute production of NO and, at the same time, inhibits expression of iNOS and COX-2 genes.
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Affiliation(s)
- Y C Chen
- Graduate Institute of Pharmacognosy Science, Taipei Medical University, 250 Wu-Hsing Street, Taipei, Taiwan
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27
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Abstract
Inducible nitric oxide synthase (iNOS)-dependent production of nitric oxide (NO) plays an important role in inflammation. The effects of various naturally occurring furanocoumarins on NO production in lipopolysaccharide (LPS)-activated RAW 264.7 macrophage cells were evaluated in vitro. The results showed that angelicin, pimpinellin, sphondin, byakangelicol, oxypeucedanin, oxypeucedanin hydrate, xanthotoxin, and cnidilin are potential NO production inhibitors, and their IC50 values for inhibition of nitrite production were 19.5, 15.6, 9.8, 16.9, 16.8, 15.8, 16.6, and 17.7 microg/mL, respectively. Distinct structure-activity relationships were also revealed for the NO production inhibitory activities of these furanocoumarins. Activities of the angelicin type such as pimpinellin and sphondin were more potent than those of the psoralen type. Presence of a methoxy at the C6 position in the angelicin type seemed to be essential to augment the activity. Western blot analysis demonstrated that only sphondin dose-dependently inhibited the expression of the iNOS protein at 2.5-20 microg/mL. However, iNOS enzyme activity was stimulated with LPS for 12 h and sphondin was administered (20 microg/mL) for 24 h, which did not reasonably inhibit iNOS enzyme activity. L-NAME (100 microM), a known specific inhibitor of iNOS, was employed as a positive control with the same protocol and showed more than 50% inhibition activity. The results demonstrate that the NO production inhibitory activity of sphondin is due to the effect of iNOS expression, but not by direct inhibition of iNOS enzyme activity. Thus, sphondin may act as a potent inhibitor of NO production under tissue-damaging inflammatory conditions.
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Affiliation(s)
- C C Wang
- Graduate Institute of Pharmacognosy Science, Taipei Medical College, Taipei, Taiwan, ROC
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28
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Masuda D, Nohara R, Tamaki N, Hosokawa R, Inada H, Hikai T, Chen LG, Tadamura E, Kudou T, Konishi J, Fujita M, Sasayama S. Evaluation of coronary blood flow reserve by 13N-NH3 positron emission computed tomography (PET) with dipyridamole in the treatment of hypertension with the ACE inhibitor (Cilazapril). Ann Nucl Med 2000; 14:353-60. [PMID: 11108164 DOI: 10.1007/bf02988695] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [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: 11/28/2022]
Abstract
PURPOSE The purpose of this study was to evaluate the effect of treatment with an angiotensin-converting enzyme (ACE) inhibitor (Cilazapril) for early hypertensive patients in terms of coronary blood flow reserve evaluated by 13NH3-positron emission tomography (PET). METHODS Before and after 12 weeks of ACE inhibitor treatment, 13NH3-PET with dipyridamole provocation test was performed, and definite myocardial perfusion and coronary flow reserve (CFR) were calculated. RESULTS Compared to our normal subjects previously reported (2.61+/-0.74), average coronary flow reserve was decreased (1.70+/-0.64 in hypertensive patients), and improved after treatment (1.77+/-0.52), but not significantly. Of 12 patients, five (42%) showed improved coronary flow reserve from 1.34 to 1.99 without a significant change in the resting flow. Only one patient (8%) showed deterioration after the ACE inhibitor treatment. The coronary vascular resistance (CVR) after ACE inhibitor treatment of the patients with CFR < 2.0 decreased significantly compared with those with CFR> or = 2.0 (p < 0.03). CONCLUSIONS These results indicate that hypertensive patients at the early stage show decreased coronary flow reserve despite having normal resting flow. Treatment with an ACE inhibitor (Cilazapril) for 12 weeks improved coronary flow reserve in 42% of our patients. The CVR of the patients with CFR < 2.0 showed improvement compared to those with CFR> or = 2.0. This result indicates that an ACE inhibitor (e.g., Cilazapril) should be one of the choices for improving CFR if hypertensive patients in early stage show signs of ischemia or diastolic dysfunction, which may be one of the sequels of reserve restriction.
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Affiliation(s)
- D Masuda
- Department of Cardiovascular Medicine, Kyoto University, Graduate School of Medicine, Japan
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Wang ZZ, Huang XZ, Tang SB, Chen YM, Chen LG, Jin ZX, Luan XJ, Zhang JH. The prevalence of NIDDM and IGT and related factors among residents in some areas of Hubei Province, China. Biomed Environ Sci 2000; 13:148-153. [PMID: 11055017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The epidemiological survey of prevalence of NIDDM (non-insulin dependent diabetes mellitus) and IGT(impaired glucose tolerance) was conducted among 9450 residents aged 25-70 in some areas of Hubei Province, China. The results show that NIDDM and IGT prevalences are 2.62% and 4.48%, respectively. There is no significant difference between male and female (P > 0.05). The NIDDM prevalence in cities is slightly higher than that in countryside, but the difference is not significant (P > 0.05). However, the IGT prevalence in city is significantly higher than that in countryside (P < 0.01). The prevalence of both NIDDM and IGT is increasing along with the age of the population. It is also significantly related to the family history of NIDDM, hypertension, and high body mass index (BMI). By using stepwise logistic regression to analyse the risk factors of NIDDM, age (OR = 1.86), BMI(OR = 2.69), family history (OR = 2.84) and hypertension (OR = 2.23) entered the model (significance level is alpha = 0.05).
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Affiliation(s)
- Z Z Wang
- Department of Preventive Medicine, Tongji Medical University, Wuhan, China
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Abstract
Cuphiin D1 (CD1), a new macrocyclic hydrolyzable tannin isolated from Cuphea hyssopifolia, has been shown to exert antitumor activity both in vitro and in vivo. In this study, we explored the mechanism of the CD1-induced antitumor effect on human promyelocytic leukemia (HL-60) cells. The results showed that CD1 induced cytotoxicity in HL-60 cells and the IC50 was 16 microM after 36 h treatment. HL-60 cells treated with CD1 for 36 h decreased the uptake of [3H]-labeled thymidine, uridine and leucine in a dose dependent manner. Electron micrographs demonstrated that HL-60 cells treated with 16 microM CD1 for 36 h exhibited chromatin condensation, indicating the apoptosis occurrence. Flow cytometric analysis demonstrated the presence of apoptotic cells with low DNA content, a decrease of cell population at G2/M phase, and a concomitant increase of cell population at G1 phase. CD1 also caused DNA fragmentation and inhibited Bcl-2 expression in the HL-60 cells. These results suggest that the inhibition of Bcl-2 expression in HL-60 cell might account for the mechanism of CD1-induced apoptosis.
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Affiliation(s)
- C C Wang
- Department of Pharmacognosy, Graduate Institute of Pharmaceutical Sciences, Taipei Medical College, Taiwan
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Abstract
L-Arginine derived nitric oxide (NO) and its derivatives, such as nitrogen dioxide and peroxynitrite, play a role in inflammation and also possibly in the multistage process of carcinogenesis. Four furanocoumarins and eight chromones isolated from the dried root of Saposhnikovia divaricata (Fang Feng in Chinese) and evaluated for their effects on the synthesis of NO induced by lipopolysaccharide (LPS) in macrophage cell line RAW 264.7. The inhibition of nitrite production, as an index for NO released from the macrophage cells, was quantitatively analyzed by Griess reaction. The results showed that imperatorin and deltoin are potential NO production inhibitor, and their IC50 values for inhibition of nitrite production were 17.3 and 11.6 microg/ml, respectively. Western-blot analysis demonstrated that iNOS enzyme activity was not inhibited by treatment with imperatorin or deltoin, but revealed that both compounds inhibited the expression of the iNOS protein.
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Affiliation(s)
- C C Wang
- Department of Pharmacognosy, Graduate Institute of Pharmaceutical Sciences, Taipei Medical College, Taiwan
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Abstract
We evaluated the antitumor activities of four macrocyclic hydrolyzable tannin dimers, cuphiin D1, cuphiin D2, oenothein B and woodfordin C isolated from Cuphea hyssopifolia (Lythraceae). All significantly inhibited the growth of the human carcinoma cell lines KB, HeLa, DU-145, Hep 3B, and the leukemia cell line HL-60, and showed less cytotoxicity than adriamycin against a normal cell line (WISH). All four compounds inhibited the viability of S-180 tumor cells in an in vitro assay and an in vivo S-180 tumor-bearing ICR mice model. Oenothein B demonstrated the greatest cytotoxicity (IC50 = 11.4 microg/ml) against S-180 tumor cells in culture, while cuphiin D1 resulted in the greatest increase in survival on S-180 tumor-bearing mice (%ILS = 84.1%). Our findings suggest that the antitumor effects of these compounds are not only related to their cytotoxicity on carcinoma cell lines, but also depended on a host-mediated mechanism; they may therefore have potential for antitumor applications.
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Affiliation(s)
- C C Wang
- Department of Pharmacognosy, Graduate Institute of Pharmaceutical Sciences, Taipei Medical College, Taiwan
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Chen LG, Lee TI, Lin HD, Wang HC, Liu WY, Tang KT. Primary aldosteronism due to unilateral adrenal hyperplasia: a case report. Zhonghua Yi Xue Za Zhi (Taipei) 1997; 59:114-20. [PMID: 9175301] [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: 02/04/2023]
Abstract
Primary aldosteronism is one of the differential diagnosis of secondary hypertension. This is usually caused by an aldosterone producing adenoma or bilateral adrenal hyperplasia which comprise about 65% and 30% of the cases, respectively. However, less than 1% of primary aldosteronism is caused by unilateral adrenal hyperplasia which is a relatively rare subset of primary aldosteronism. The clinical and biochemical manifestations of the disorder are indistinguishable from aldosterone-producing tumor, and a definitive diagnosis can only be made by pathological finding. A 33-year-old male Chinese patient presented with hypertension, hypokalemia, metabolic alkalosis, and the hypersecretion of aldosterone associated with suppressed plasma renin activity which is a typical hallmark of primary aldosteronism. Image studies including both magnetic resonance imaging (MRI) and 131I NIP-59 scan as well as postural test suggested an aldosterone-producing tumor of the right adrenal gland. Unilateral adrenectomy and pathological examination of the right adrenal gland eventually proved a case of unilateral adrenal hyperplasia. Blood pressure, plasma potassium, aldosterone and renin activity levels returned to normal two weeks after operation and had remained normal at up to one year of follow up. In addition, a saline loading test showed normal suppression of plasma aldosterone level one year after the operation, suggesting that the function of the left adrenal gland remains normal. The etiology of unilateral adrenal hyperplasia is unclear and the future recurrence of the disease is possible. Long-term follow-up is necessary to ensure the cure of this disorder.
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Affiliation(s)
- L G Chen
- Department of Medicine, Veterans General Hospital-Taipei, Taiwan, R.O.C
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Chen BX, Ding YS, Chen LG. [Experimental study on the processed drug of castor seeds in the therapy of pulmonary carcinoma]. Zhongguo Zhong Yao Za Zhi 1994; 19:726-7, 762. [PMID: 7718133] [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
In this study, castor seeds were processed by one of the traditional Chinese methods, LD50 was measured and tumor inhition tests in nude mice bearing human pulmonary carcinoma were conducted. The results showed that the processing method was able to lower the toxicity of castor seeds and maintain their antitumor effect, thus providing an experimental basis for oral administration of castor seeds in the therapy of pulmonary carcinoma.
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Affiliation(s)
- B X Chen
- Affiliated Ganquan Hospital, Shanghai Railway Medical College
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35
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Lu ZC, Chen LG, Zhang YY. [Dilatation of anastomotic stricture by Nd:YAG laser beam under endoscopy]. Zhonghua Zhong Liu Za Zhi 1994; 16:451-3. [PMID: 7720504] [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
Anastomotic stricture has become a common complication following surgical treatment of upper gastrointestinal cancers. A technique was devised to alleviate the stricture with Nd. YAG laser beam under endoscopy. The laser beam was applied at 3-4 different points near the anastomotic stoma. The thermal effect of the beam would cut the scar tissues in and underneath the mucosa, leading to dilatation of the stoma. A total of 48 patients with cancer of the esophagus (n = 21), gastric cardia (n = 20), body of stomach (n = 6) and gastric stump (n = 1) with postoperative anastomotic stricture was so treated. According to the degree of dilatation, the result of treatment upon longterm follow-up was good (the anastomotic stoma was enlarged more than 6 mm) in 41 (85.4%), fair (the stoma enlarged 4-5 mm) in 5 (10.4%) and poor in the remaining 2. Due precautions should be made to avoid bleeding and perforation.
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Affiliation(s)
- Z C Lu
- Department of Digestive Tumor, Endoscopicunit Zhejiang Provincial Cancer Hospital, Hangzhou
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36
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Affiliation(s)
- S L Wang
- Department of Food Engineering, Da-Yeh Institute of Technology, Chan-Hwa, Taiwan, ROC
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37
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Lin MB, Zhang W, Zhao XW, Lu JX, Wang M, Chen LG. [Biotransformation of tetrandrine in rats and in men]. Yao Xue Xue Bao 1982; 17:728-35. [PMID: 7168321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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38
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Zhu DY, Sun HL, Xu WC, Zeng MQ, Chen LG, Liu GY. [Clinical evaluation of Biltricide (praziquantel) in cysticercosis cellulosae]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1982; 4:220-3. [PMID: 6217909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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