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Zhang R, Liu J, Xue G, Yang J, Li D, Tian T, Zhang X, Gao K, Pan Z. Forced activation of dystrophin transcription by CRISPR/dCas9 reduced arrhythmia susceptibility via restoring membrane Nav1.5 distribution. Gene Ther 2023; 30:142-149. [PMID: 35644811 DOI: 10.1038/s41434-022-00348-z] [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: 10/22/2021] [Revised: 05/08/2022] [Accepted: 05/12/2022] [Indexed: 11/09/2022]
Abstract
Dystrophin deficiency due to genetic mutations causes cardiac abnormalities in Duchenne's muscular dystrophy. Dystrophin is also shown to be downregulated in conventional failing hearts. Whether restoration of dystrophin expression possesses any therapeutic potential for conventional heart failure (HF) remains to be examined. HF mouse model was generated by transverse aortic constriction (TAC). In vivo activation of dystrophin transcription was achieved by tail-vein injection of adeno-associated virus 9 carrying CRISPR/dCas system for dystrophin. We found that activation of dystrophin expression in TAC mice significantly reduced the susceptibility to arrhythmia of TAC mice and the mortality rate. We further demonstrated that over-expression of dystrophin increased cardiac conduction of hearts in TAC mice by optical mapping evaluation. Activation of dystrophin expression also increased peak sodium current in isolated ventricular myocytes from hearts of TAC mice as recorded by the patch-clamp technique. Immunoblotting and immunofluorescence showed that increased dystrophin transcription restored the membrane distribution of Nav1.5 in the hearts of TAC mice. In summary, correction of dystrophin downregulation by the CRISPR-dCas9 system reduced the susceptibility to arrhythmia of conventional HF mice through restoring Nav1.5 membrane distribution. This study paved the way to develop a new therapeutic strategy for HF-related ventricular arrhythmia.
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Affiliation(s)
- Ruixin Zhang
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China
| | - Junwu Liu
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China
| | - Genlong Xue
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China.,Institute of Heart and Vascular Diseases, Department of Cardiology, and Central Laboratory, the First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jiming Yang
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China
| | - Desheng Li
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China
| | - Tao Tian
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China
| | - Xiaofang Zhang
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China
| | - Kangyi Gao
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China
| | - Zhenwei Pan
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, 150086, China. .,Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, Beijing, 2019RU070, China. .,NHC Key Laboratory of Cell Transplantation, Harbin Medical University, Harbin, China.
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Yang Y, Zhang Y, Yang J, Zhang M, Tian T, Jiang Y, Liu X, Xue G, Li X, Zhang X, Li S, Huang X, Li Z, Guo Y, Zhao L, Bao H, Zhou Z, Song J, Yang G, Xuan L, Shan H, Zhang Z, Lu Y, Yang B, Pan Z. Interdependent Nuclear Co-Trafficking of ASPP1 and p53 Aggravates Cardiac Ischemia/Reperfusion Injury. Circ Res 2023; 132:208-222. [PMID: 36656967 PMCID: PMC9855749 DOI: 10.1161/circresaha.122.321153] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE ASPP1 (apoptosis stimulating of p53 protein 1) is critical in regulating cell apoptosis as a cofactor of p53 to promote its transcriptional activity in the nucleus. However, whether cytoplasmic ASPP1 affects p53 nuclear trafficking and its role in cardiac diseases remains unknown. This study aims to explore the mechanism by which ASPP1 modulates p53 nuclear trafficking and the subsequent contribution to cardiac ischemia/reperfusion (I/R) injury. METHODS AND RESULTS The immunofluorescent staining showed that under normal condition ASPP1 and p53 colocalized in the cytoplasm of neonatal mouse ventricular cardiomyocytes, while they were both upregulated and translocated to the nuclei upon hypoxia/reoxygenation treatment. The nuclear translocation of ASPP1 and p53 was interdependent, as knockdown of either ASPP1 or p53 attenuated nuclear translocation of the other one. Inhibition of importin-β1 resulted in the cytoplasmic sequestration of both p53 and ASPP1 in neonatal mouse ventricular cardiomyocytes with hypoxia/reoxygenation stimulation. Overexpression of ASPP1 potentiated, whereas knockdown of ASPP1 inhibited the expression of Bax (Bcl2-associated X), PUMA (p53 upregulated modulator of apoptosis), and Noxa, direct apoptosis-associated targets of p53. ASPP1 was also increased in the I/R myocardium. Cardiomyocyte-specific transgenic overexpression of ASPP1 aggravated I/R injury as indicated by increased infarct size and impaired cardiac function. Conversely, knockout of ASPP1 mitigated cardiac I/R injury. The same qualitative data were observed in neonatal mouse ventricular cardiomyocytes exposed to hypoxia/reoxygenation injury. Furthermore, inhibition of p53 significantly blunted the proapoptotic activity and detrimental effects of ASPP1 both in vitro and in vivo. CONCLUSIONS Binding of ASPP1 to p53 triggers their nuclear cotranslocation via importin-β1 that eventually exacerbates cardiac I/R injury. The findings imply that interfering the expression of ASPP1 or the interaction between ASPP1 and p53 to block their nuclear trafficking represents an important therapeutic strategy for cardiac I/R injury.
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Affiliation(s)
- Ying Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.).,Department of Cardiology, Xiamen Key Laboratory of Cardiac Electrophysiology, Xiamen Institute of Cardiovascular Diseases, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, China (Y.Y.)
| | - Yang Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Jiqin Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Manman Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Tao Tian
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Yuan Jiang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.).,Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China (Y.J.)
| | - Xuening Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Genlong Xue
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Xingda Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Xiaofang Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Shangxuan Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Xiang Huang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Zheng Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Yang Guo
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Lexin Zhao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Hairong Bao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Zhiwen Zhou
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Jiahui Song
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Guohui Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Lina Xuan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Hongli Shan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.).,Shanghai Frontiers Science Research Center for Druggability of Cardiovascular noncoding RNA, Institute for Frontier Medical Technology, Shanghai University of Engineering Science, China (H.S.)
| | - Zhiren Zhang
- NHC Key Laboratory of Cell Transplantation, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China (Z. Zhang, Z.P.)
| | - Yanjie Lu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Baofeng Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.)
| | - Zhenwei Pan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Heilongjiang, China (Y.Y., Y.Z., J.Y., M.Z., T.T., Y.J., X.L., G.X., X.L., X.Z., S.L., X.H., Z.L., Y.G., L.Z., H.B., Z. Zhou, J.S., G.Y., L.X., H.S., Y.L., B.Y., Z.P.).,Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019 Research Unit 070, Harbin, Heilongjiang, China (Z.P.).,NHC Key Laboratory of Cell Transplantation, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China (Z. Zhang, Z.P.)
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Gao J, Xue G, Zhan G, Wang X, Li J, Yang X, Xia Y. Benefits of SGLT2 inhibitors in arrhythmias. Front Cardiovasc Med 2022; 9:1011429. [PMID: 36337862 PMCID: PMC9631490 DOI: 10.3389/fcvm.2022.1011429] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 08/04/2022] [Accepted: 10/04/2022] [Indexed: 09/25/2023] Open
Abstract
Some studies have shown that sodium-glucose cotransporter (SGLT) 2 inhibitors can definitively attenuate the occurrence of cardiovascular diseases such as heart failure (HF), dilated cardiomyopathy (DCM), and myocardial infarction. With the development of research, SGLT2 inhibitors can also reduce the risk of arrhythmias. So in this review, how SGLT2 inhibitors play a role in reducing the risk of arrhythmia from the perspective of electrical remodeling and structural remodeling are explored and then the possible mechanisms are discussed. Specifically, we focus on the role of SGLT2 inhibitors in Na+ and Ca2 + homeostasis and the transients of Na+ and Ca2 +, which could affect electrical remodeling and then lead to arrythmia. We also discuss the protective role of SGLT2 inhibitors in structural remodeling from the perspective of fibrosis, inflammation, oxidative stress, and apoptosis. Ultimately, it is clear that SGLT2 inhibitors have significant benefits on cardiovascular diseases such as HF, myocardial hypertrophy and myocardial infarction. It can be expected that SGLT2 inhibitors can reduce the risk of arrhythmia.
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Affiliation(s)
| | | | | | | | | | | | - Yunlong Xia
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
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Xue G, Yang X, Zhan G, Wang X, Gao J, Zhao Y, Wang X, Li J, Pan Z, Xia Y. Sodium–Glucose cotransporter 2 inhibitor empagliflozin decreases ventricular arrhythmia susceptibility by alleviating electrophysiological remodeling post-myocardial-infarction in mice. Front Pharmacol 2022; 13:988408. [PMID: 36313361 PMCID: PMC9616207 DOI: 10.3389/fphar.2022.988408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/25/2022] [Indexed: 11/24/2022] Open
Abstract
Background: Recent clinical trials indicate that sodium–glucose cotransporter 2 (SGLT2) inhibitors improve cardiovascular outcomes in myocardial infarction (MI) patients, but the underlying mechanisms remain unknown. As arrhythmia often occurs during myocardial infarction, it is the main cause of death. Objective: The purpose of this study was to investigate the influence of empagliflozin (EMPA), an SGLT2 inhibitor, on cardiac electrophysiological remodeling and arrhythmia susceptibility of myocardial infarction mice. Methods: ECG was obtained from mice 1 week after MI to determine the QT interval. In an electrophysiological study and optical mapping was performed to evaluate the function of EMPA and underlying mechanisms of post-myocardial-infarction in mice. Results: EMPA treatment significantly reduced the QT interval of MI mice (MI + EMPA 50.24 ms vs. MI 64.68 ms). The membrane potential and intracellular Ca [Cai] were mapped from 13 MI hearts and five normal hearts using an optical mapping technique. A dynamic pacing protocol was used to determine action potential duration and [Cai] at baseline and after EMPA (10 umol/L) infusion. EMPA perfusion did not change the APD80 and CaT80 in normal ventricles while shortening them in an infarct zone, bordering zone, and remote zone of MI hearts at 200 ms, 150 ms, 120 ms, and 100 ms pacing cycle length. The conduction velocity of infarcted ventricles was 0.278 m/s and 0.533 m/s in normal ventricles at baseline (p < 0.05). After EMPA administration, the conduction velocity of infarcted ventricles increased to 0.363 m/s, whereas no significant changes were observed in normal ventricles. The action potential rise time, CaT rise time, and CaT tau time were improved after EMPA perfusion in infarcted ventricles, whereas no significant changes were observed in normal ventricles. EMPA decreases early afterdepolarizations premature ventricular beats, and ventricular fibrillation (VF) in infarcted ventricles. The number of phase singularities (baseline versus EMPA, 6.26 versus 3.25), dominant frequency (20.52 versus 10.675 Hz), and ventricular fibrillation duration (1.072 versus 0.361 s) during ventricular fibrillation in infarcted ventricles were all significantly decreased by EMPA. Conclusion: Treatment with EMPA improved post-MI electrophysiological remodeling and decreased substrate for VF of MI mice. The inhibitors of SGLT2 may be a new class of agents for the prevention of ventricle arrhythmia after chronic MI.
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Affiliation(s)
- Genlong Xue
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiaolei Yang
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Ge Zhan
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xin Wang
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- Department of Ultrasound, The Affiliated Hospital of Innermongolia Medical University, Huhhot, China
| | - Jinghan Gao
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yong Zhao
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xinying Wang
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jiatian Li
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Zhenwei Pan
- Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy, Harbin Medical University, Harbin, China
- *Correspondence: Yunlong Xia, ; Zhenwei Pan,
| | - Yunlong Xia
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Yunlong Xia, ; Zhenwei Pan,
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Jiang Y, Yang Y, Zhang Y, Yang J, Zhang MM, Li S, Xue G, Li X, Zhang X, Yang J, Huang X, Huang Q, Shan H, Lu Y, Yang B, Pan Z. Cytoplasmic sequestration of p53 by lncRNA-CIRPILalleviates myocardial ischemia/reperfusion injury. Commun Biol 2022; 5:716. [PMID: 35851102 PMCID: PMC9293912 DOI: 10.1038/s42003-022-03651-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 06/29/2022] [Indexed: 11/09/2022] Open
Abstract
Myocardial ischemia/reperfusion (MI/R) injury is a pathological process that seriously affects the health of patients with coronary artery disease. Long non-coding RNAs (lncRNAs) represents a new class of regulators of diverse biological processes and disease conditions, the study aims to discover the pivotal lncRNA in MI/R injury. The microarray screening identifies a down-regulated heart-enriched lncRNA-CIRPIL (Cardiac ischemia reperfusion associated p53 interacting lncRNA, lncCIRPIL) from the hearts of I/R mice. LncCIRPIL inhibits apoptosis of cultured cardiomyocytes exposed to anoxia/reoxygenation (A/R). Cardiac-specific transgenic overexpression of lncCIRPIL alleviates I/R injury in mice, while knockout of lncCIRPIL exacerbates cardiac I/R injury. LncCIRPIL locates in the cytoplasm and physically interacts with p53, which leads to the cytoplasmic sequestration and the acceleration of ubiquitin-mediated degradation of p53 triggered by E3 ligases CHIP, COP1 and MDM2. p53 overexpression abrogates the protective effects of lncCIRPIL. Notably, the human fragment of conserved lncCIRPIL mimics the protective effects of the full-length lncCIRPIL on cultured human AC16 cells. Collectively, lncCIRPIL exerts its cardioprotective action via sequestering p53 in the cytoplasm and facilitating its ubiquitin-mediated degradation. The study highlights a unique mechanism in p53 signal pathway and broadens our understanding of the molecular mechanisms of MI/R injury.
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Affiliation(s)
- Yuan Jiang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China.,Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019 Research Unit 070, 150086, Harbin, Heilongjiang, P. R. China.,Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 510120, Guangzhou, Guangdong, P. R. China
| | - Ying Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Yang Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Jiqin Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Man-Man Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Shangxuan Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Genlong Xue
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Xingda Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Xiaofang Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Jiming Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Xiang Huang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Qihe Huang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Hongli Shan
- Shanghai Frontiers Science Research Center for Druggability of Cardiovascular noncoding RNA, Institute for Frontier Medical Technology, Shanghai University of Engineering Science, 201620, Shanghai, China
| | - Yanjie Lu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China
| | - Baofeng Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China. .,Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019 Research Unit 070, 150086, Harbin, Heilongjiang, P. R. China.
| | - Zhenwei Pan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, 150086, Harbin, Heilongjiang, P. R. China. .,Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019 Research Unit 070, 150086, Harbin, Heilongjiang, P. R. China.
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Li X, Zhang Y, Zhao Y, Zhou Y, Han Q, Yang Y, Zhang L, Shi L, Jin X, Zhang R, Gao H, Xue G, Li D, Zhang ZR, Lu Y, Yang B, Pan Z. Cullin-associated and neddylation-dissociated 1 protein (CAND1) governs cardiac hypertrophy and heart failure partially through regulating calcineurin degradation. Pharmacol Res 2022; 182:106284. [PMID: 35661710 DOI: 10.1016/j.phrs.2022.106284] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/16/2022] [Accepted: 05/29/2022] [Indexed: 11/19/2022]
Abstract
Pathological cardiac hypertrophy is a process characterized by significant disturbance of protein turnover. Cullin-associated and Neddylation-dissociated 1 (CAND1) acts as a coordinator to modulate substrate protein degradation by promoting the formation of specific cullin-based ubiquitin ligase 3 complex in response to substrate accumulation, which thereby facilitate the maintaining of normal protein homeostasis. Accumulation of calcineurin is critical in the pathogenesis of cardiac hypertrophy and heart failure. However, whether CAND1 titrates the degradation of hypertrophy related protein eg. calcineurin and regulates cardiac hypertrophy remains unknown. Therefore, we aim to explore the role of CAND1 in cardiac hypertrophy and heart failure and the underlying molecular mechanism. Here, we found that the protein level of CAND1 was increased in cardiac tissues from heart failure (HF) patients and TAC mice, whereas the mRNA level did not change. CAND1-KO+/- aggravated TAC-induced cardiac hypertrophic phenotypes; in contrast, CAND1-Tg attenuated the maladaptive cardiac remodeling. At the molecular level, CAND1 overexpression downregulated, whereas CAND1-KO+/- or knockdown upregulated calcineurin expression at both in vivo and in vitro conditions. Mechanistically, CAND1 overexpression favored the assembly of Cul1/atrogin1/calcineurin complex and rendered the ubiquitination and degradation of calcineurin. Notably, CAND1 deficiency-induced hypertrophic phenotypes were partially rescued by knockdown of calcineurin, and application of exogenous CAND1 prevented TAC-induced cardiac hypertrophy. Taken together, our findings demonstrate that CAND1 exerts a protective effect against cardiac hypertrophy and heart failure partially by inducing the degradation of calcineurin.
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Affiliation(s)
- Xingda Li
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Yang Zhang
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Yue Zhao
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Yang Zhou
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Qilong Han
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Ying Yang
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Lingmin Zhang
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Ling Shi
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Xuexin Jin
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Ruixin Zhang
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Haiyu Gao
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Genlong Xue
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Desheng Li
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China
| | - Zhi-Ren Zhang
- Institute of Metabolic Disease, Heilongjiang Academy of Medical Science, Harbin, China; Departments of Cardiology and Clinical Pharmacy, Harbin Medical University Cancer Hospital, Heilongjiang Academy of Medical Science, Harbin, China; NHC Key Laboratory of Cell Transplantation, Harbin Medical University, Harbin, China
| | - Yanjie Lu
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China; Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019RU070, China
| | - Baofeng Yang
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China; Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019RU070, China.
| | - Zhenwei Pan
- Department of Pharmacology, Key Laboratory of Cardiovascular Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin 150086, China; Research Unit of Noninfectious Chronic Diseases in Frigid Zone, Chinese Academy of Medical Sciences, 2019RU070, China; NHC Key Laboratory of Cell Transplantation, Harbin Medical University, Harbin, China.
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Zhang W, Liu BH, Xia CD, Qiu JH, Lou HP, Di JD, Xue G, Li G. [Predictive value of D-dimer for deep venous thrombosis of lower extremity in adult burn patients]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:335-340. [PMID: 35462511 DOI: 10.3760/cma.j.cn501120-20201021-00444] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the predictive value of D-dimer for deep venous thrombosis (DVT) of lower extremity in adult burn patients. Methods: A retrospective case series study was conducted. The clinical data of 3 861 adult burn patients who met the inclusion criteria and were admitted to the Department of Burns of Zhengzhou First People's Hospital from January 1, 2015 to December 31, 2019 were collected. The patients were divided into DVT group (n=77) and non-DVT group (n=3 784) according to whether DVT of lower extremity occurred during hospitalization or not. Data of patients in the two groups were collected and compared, including the gender, age, total burn area, D-dimer level, with lower limb burn and inhalation injury or not on admission, with sepsis/septic shock, femoral vein indwelling central venous catheter (CVC), history of surgery, and infusion of concentrated red blood cells or not during hospitalization. Data were statistically analyzed with independent sample t test, Mann-Whitney U test, and chi-square test. The indicators with statistically significant differences between the two groups were analyzed with multivariate logistic regression analysis to screen the independent risk factors for DVT of lower extremity in 3 861 adult burn patients. The receiver operating characteristic (ROC) curve of the independent risk factors predicting DVT of lower extremity in 3 861 adult burn patients were drawn, and the area under the curve (AUC), the optimal threshold value, and the sensitivity and specificity under the optimal threshold value were calculated. The quality of the AUC was compared by Delong test, and the sensitivity and specificity under the optimal threshold value were compared using chi-square test. Results: There were no statistically significant differences in gender, occurrence of sepsis/septic shock or history of surgery during hospitalization between patients in the two groups (P>0.05), while there were statistically significant differences in age, total burn area, D-dimer level, lower limb burn and inhalation injury on admission, and femoral vein indwelling CVC and infusion of concentrated red blood cells during hospitalization between patients in the two groups (t=-8.17, with Z values of -5.04 and -10.83, respectively, χ2 values of 21.83, 5.37, 7.75, and 4.52, respectively, P<0.05 or P<0.01). Multivariate logistic regression analysis showed that age, total burn area, and D-dimer level were the independent risk factors for DVT of lower extremity in 3 861 adult burn patients (with odds ratios of 1.05, 1.02, and 1.14, respectively, 95% confidence intervals of 1.04-1.06, 1.00-1.03, and 1.10-1.20, respectively, P<0.05 or P<0.01). The AUCs of ROC of age, total burn area, and D-dimer level for predicting DVT of lower extremity in 3 861 adult burn patients were 0.74, 0.67, and 0.86, respectively (with 95% confidence intervals of 0.68-0.80, 0.60-0.74, and 0.83-0.89, respectively, P values<0.01), the optimal threshold values were 50.5 years old, 10.5% total body surface area, and 1.845 mg/L, respectively, the sensitivity under the optimal threshold values were 71.4%, 70.1%, and 87.0%, respectively, and the specificity under the optimal threshold values were 66.8%, 67.2%, and 72.9%, respectively. The AUC quality and sensitivity and specificity under the optimal threshold value of D-dimer level were significantly better than those of age (z=3.29, with χ2 values of 284.91 and 34.25, respectively, P<0.01) and total burn area (z=4.98, with χ2 values of 326.79 and 29.88, respectively, P<0.01), while the AUC quality and sensitivity and specificity under the optimal threshold values were similar between age and total burn area (P>0.05). Conclusions: D-dimer level is an independent risk factor for DVT of lower extremity in adult burn patients, its AUC quality and sensitivity and specificity under the optimal threshold value are better than those of age and total burn area, and it has good predictive value for DVT of lower extremity in adult burn patients.
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Affiliation(s)
- W Zhang
- Department of Interventional Radiology, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - B H Liu
- Department of Interventional Radiology, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - C D Xia
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J H Qiu
- Department of Interventional Radiology, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - H P Lou
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J D Di
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - G Xue
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Gang Li
- Department of Interventional Radiology, Zhengzhou First People's Hospital, Zhengzhou 450004, China
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Junying T, Jin H, Jinjin L, Xiping O, Pujun L, Xue G, Qian Z, Tingting P, Hongfei P. Neoadjuvant chemotherapy followed by radical surgery versus concurrent chemoradiotherapy in patients with FIGO stage IIB cervical cancer. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.661] [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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Yan C, Cui J, Huang L, Du B, Chen L, Xue G, Li S, Zhang W, Zhao L, Sun Y, Yao H, Li N, Zhao H, Feng Y, Liu S, Zhang Q, Liu D, Yuan J. Rapid and visual detection of 2019 novel coronavirus (SARS-CoV-2) by a reverse transcription loop-mediated isothermal amplification assay. Clin Microbiol Infect 2020; 26:773-779. [PMID: 32276116 PMCID: PMC7144850 DOI: 10.1016/j.cmi.2020.04.001] [Citation(s) in RCA: 352] [Impact Index Per Article: 88.0] [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: 03/03/2020] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To evaluate a reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay for detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and compare it with RT-PCR. METHODS We designed primers specific to the orf1ab and S genes of SARS-CoV-2. Total viral RNA was extracted using the QIAamp Viral RNA Mini Kit. We optimized the RT-LAMP assay, and evaluated it for its sensitivity and specificity of detection using real-time turbidity monitoring and visual observation. RESULTS The primer sets orf1ab-4 and S-123 amplified the genes in the shortest times, the mean (±SD) times were 18 ± 1.32 min and 20 ± 1.80 min, respectively, and 63°C was the optimum reaction temperature. The sensitivities were 2 × 101 copies and 2 × 102 copies per reaction with primer sets orf1ab-4 and S-123, respectively. This assay showed no cross-reactivity with 60 other respiratory pathogens. To describe the availability of this method in clinical diagnosis, we collected 130 specimens from patients with clinically suspected SARS-CoV-2 infection. Among them, 58 were confirmed to be positive and 72 were negative by RT-LAMP. The sensitivity was 100% (95% CI 92.3%-100%), specificity 100% (95% CI 93.7%-100%). This assay detected SARS-CoV-2 in a mean (±SD) time of 26.28 ± 4.48 min and the results can be identified with visual observation. CONCLUSION These results demonstrate that we developed a rapid, simple, specific and sensitive RT-LAMP assay for SARS-CoV-2 detection among clinical samples. It will be a powerful tool for SARS-CoV-2 identification, and for monitoring suspected patients, close contacts and high-risk groups.
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Affiliation(s)
- C Yan
- Capital Institute of Paediatrics, Beijing, China
| | - J Cui
- Capital Institute of Paediatrics, Beijing, China
| | - L Huang
- Treatment and Research Centre for Infectious Diseases, The Fifth Medical Centre of PLA General Hospital, Beijing, China
| | - B Du
- Capital Institute of Paediatrics, Beijing, China
| | - L Chen
- Beijing Macro & Micro-test Bio-Tech Co., Ltd. Beijing, China
| | - G Xue
- Capital Institute of Paediatrics, Beijing, China
| | - S Li
- Capital Institute of Paediatrics, Beijing, China
| | - W Zhang
- Capital Institute of Paediatrics, Beijing, China
| | - L Zhao
- Capital Institute of Paediatrics, Beijing, China
| | - Y Sun
- Capital Institute of Paediatrics, Beijing, China
| | - H Yao
- Capital Institute of Paediatrics, Beijing, China
| | - N Li
- Capital Institute of Paediatrics, Beijing, China
| | - H Zhao
- Capital Institute of Paediatrics, Beijing, China
| | - Y Feng
- Capital Institute of Paediatrics, Beijing, China
| | - S Liu
- Capital Institute of Paediatrics, Beijing, China
| | - Q Zhang
- Capital Institute of Paediatrics, Beijing, China
| | - D Liu
- Computational Virology Group, Centre for Bacteria and Virus Resources and Bioinformation, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China.
| | - J Yuan
- Capital Institute of Paediatrics, Beijing, China.
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Li J, Xu C, Liu Y, Li Y, Du S, Zhang R, Sun Y, Zhang R, Wang Y, Xue H, Ni S, Asiya M, Xue G, Li Y, Shi L, Li D, Pan Z, Zhang Y, Wang Z, Cai B, Wang N, Yang B. Fibroblast growth factor 21 inhibited ischemic arrhythmias via targeting miR-143/EGR1 axis. Basic Res Cardiol 2020; 115:9. [PMID: 31900593 DOI: 10.1007/s00395-019-0768-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [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: 08/14/2019] [Accepted: 12/16/2019] [Indexed: 12/26/2022]
Abstract
Ventricular arrhythmia is the most common cause of sudden cardiac death in patients with myocardial infarction (MI). Fibroblast growth factor 21 (FGF21) has been shown to play an important role in cardiovascular and metabolic diseases. However, the effects of FGF21 on ventricular arrhythmias following MI have not been addressed yet. The present study was conducted to investigate the pharmacological action of FGF21 on ventricular arrhythmias after MI. Adult male mice were administrated with or without recombinant human basic FGF21 (rhbFGF21), and the susceptibility to arrhythmias was assessed by programmed electrical stimulation and optical mapping techniques. Here, we found that rhbFGF21 administration reduced the occurrence of ventricular tachycardia (VT), improved epicardial conduction velocity and shorted action potential duration at 90% (APD90) in infarcted mouse hearts. Mechanistically, FGF21 may improve cardiac electrophysiological remodeling as characterized by the decrease of INa and IK1 current density in border zone of infarcted mouse hearts. Consistently, in vitro study also demonstrated that FGF21 may rescue oxidant stress-induced dysfunction of INa and IK1 currents in cultured ventricular myocytes. We further found that oxidant stress-induced down-regulation of early growth response protein 1 (EGR1) contributed to INa and IK1 reduction in post-infarcted hearts, and FGF21 may recruit EGR1 into the SCN5A and KCNJ2 promoter regions to up-regulate NaV1.5 and Kir2.1 expression at transcriptional level. Moreover, miR-143 was identified as upstream of EGR1 and mediated FGF21-induced EGR1 up-regulation in cardiomyocytes. Collectively, rhbFGF21 administration effectively suppressed ventricular arrhythmias in post-infarcted hearts by regulating miR-143-EGR1-NaV1.5/Kir2.1 axis, which provides novel therapeutic strategies for ischemic arrhythmias in clinics.
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Affiliation(s)
- Jiamin Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Chaoqian Xu
- Mudanjiang Medical University, Mudanjiang, 157000, China
| | - Yining Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Yuanshi Li
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Sijia Du
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Ruijie Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Yuehang Sun
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Ronghao Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Ying Wang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Hongru Xue
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Sha Ni
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Mavlikhanova Asiya
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Genlong Xue
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Yanyao Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Ling Shi
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Desheng Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Zhenwei Pan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Yong Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
- Institute of Metabolic Disease, Heilongjiang Academy of Medical Science, Harbin, 150086, China
| | - Zhiguo Wang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China
| | - Benzhi Cai
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China.
- Department of Pharmacy, The Second Affiliated Hospital of Harbin Medical University (Institute of Clinical Pharmacy, The University Key Laboratory of Drug Research, Heilongjiang Higher Education Institutions), Harbin, 150081, China.
| | - Ning Wang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China.
| | - Baofeng Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China.
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Pei D, Xue G, Wu JF, Wang DM, Qin XJ. [Clinical analysis between trefoil factor 3 gene polymorphsims and susceptibility to papillary thyroid carcinoma]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:926-931. [PMID: 31623036 DOI: 10.13201/j.issn.1001-1781.2019.10.007] [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] [Received: 04/06/2019] [Indexed: 06/10/2023]
Abstract
Objective:To explore the relationships between trefoil factor 3(TFF3) gene polymorphisms and susceptibility to papillary thyroid carcinoma(PTC) in Han population of northern China. Method:A case-control study was performed in 123 PTC patients and 108 healthy controls. Four SNPs in the TFF3 gene, including rs225361, rs533093, rs9981660 and rs225439, were detected by gene sequencing. Result:Compared with healthy people, there was no significant difference in the genotype frequencies of rs225361, rs9981660, rs533093 and rs225439 alleles in the PTC group(P>0.05). The CGTC and CGTT haploids of TFF3 gene were positively correlated with the occurrence of PTC, and CGCC and TGTC haploids were negatively correlated with the occurrence of PTC. TT genotype of rs9981660 had significant differences in the distribution of PTC with and without lymph node metastasis(P<0.05). Conclusion:Polymorphisms in 4 SNP loci in the TFF3 gene may be unrelated to the occurrence of PTC. The CGTC, CGTT, CGCC and TGTC haploids in the TFF3 gene might be related to the development of PTC. The TT genotype at rs9981660 may be associated with lymph node metastasis of PTC.
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Affiliation(s)
- D Pei
- Hebei North University Morphology Laboratory,Zhangjiakou,075000,China
| | - G Xue
- Department of Otorhinolaryngology Head and Neck Surgery,the First Hospital of Hebei North University
| | - J F Wu
- Hebei North University Morphology Laboratory,Zhangjiakou,075000,China
| | - D M Wang
- Hebei North University Morphology Laboratory,Zhangjiakou,075000,China
| | - X J Qin
- Hebei North University Morphology Laboratory,Zhangjiakou,075000,China
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Cai B, Zhang Y, Zhao Y, Wang J, Li T, Zhang Y, Jiang Y, Jin X, Xue G, Li P, Sun Y, Huang Q, Zhang X, Su W, Yang Y, Sun Y, Shi L, Li X, Lu Y, Yang B, Pan Z. Long Noncoding RNA-DACH1 (Dachshund Homolog 1) Regulates Cardiac Function by Inhibiting SERCA2a (Sarcoplasmic Reticulum Calcium ATPase 2a). Hypertension 2019; 74:833-842. [PMID: 31446800 DOI: 10.1161/hypertensionaha.119.12998] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Heart failure (HF) is a major cause of morbidity and mortality in patients with various cardiovascular diseases. Restoration of cardiac function is critical in improving the clinical outcomes of patients with HF. Long noncoding RNAs are widely involved in the development of multiple cardiac diseases, whereas their role in regulating cardiac function remains unclear. In this study, we found that the expression of long noncoding RNA-DACH1 (dachshund homolog 1) was upregulated in the failing hearts of mice and human. We tested the hypothesis that the intronic long noncoding RNA of DACH1 (LncDACH1) can participate in the regulation of cardiac function and HF. Transgenic overexpression of LncDACH1 in the cardiac myocytes of mice led to impaired cardiac function, reduced calcium transient and cell shortening, and decreased SERCA2a (sarcoplasmic reticulum calcium ATPase 2a) protein expression. In contrast, conditional knockout of LncDACH1 in cardiac myocytes resulted in increased calcium transient, cell shortening, SERCA2a protein expression, and improved cardiac function of transverse aortic constriction induced HF mice. The same qualitative data were obtained by overexpression or knockdown of LncDACH1 with adenovirus carrying LncDACH1 or its siRNA. Moreover, therapeutic administration of adenovirus carrying LncDACH1 siRNA to transverse aortic constriction mice abolished the development of HF. Mechanistically, LncDACH1 directly binds to SERCA2a. Overexpression of LncDACH1 augments the ubiquitination of SERCA2a. LncDACH1 upregulation impairs cardiac function by promoting ubiquitination-related degradation of SERCA2a.
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Affiliation(s)
- Benzhi Cai
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China.,Department of Pharmacology, Institute of Clinical Pharmacy, Heilongjiang Key Laboratory of Drug Research (B.C.), Harbin Medical University, China
| | - Yang Zhang
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Yue Zhao
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Jin Wang
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Tingting Li
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Yiyuan Zhang
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Yuan Jiang
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Xuexin Jin
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Genlong Xue
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Penghui Li
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Yilin Sun
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Qihe Huang
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Xiaofang Zhang
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Wanzhen Su
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Ying Yang
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Yangyang Sun
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Ling Shi
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Xingda Li
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Yanjie Lu
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Baofeng Yang
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
| | - Zhenwei Pan
- From the Department of Pharmacology (The Key Laboratory of Cardiovascular Research, Ministry of Education) at College of Pharmacy (B.C., Yang Zhang, Y. Zhao, J.W., T.L., Yiyuan Zhang, Y.J., X.J., G.X., P.L., Yilin Sun, Q.H., X.Z., W.S., Y.Y., Yangyang Sun, L.S., X.L., Y.L., B.Y., Z.P.), Harbin Medical University, China
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Jin X, Jiang Y, Xue G, Yuan Y, Zhu H, Zhan L, Zhuang Y, Huang Q, Shi L, Zhao Y, Li P, Sun Y, Su W, Zhang Y, Yang B, Lu Y, Wang Z, Pan Z. Increase of late sodium current contributes to enhanced susceptibility to atrial fibrillation in diabetic mice. Eur J Pharmacol 2019; 857:172444. [PMID: 31185218 DOI: 10.1016/j.ejphar.2019.172444] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/02/2019] [Accepted: 06/07/2019] [Indexed: 01/10/2023]
Abstract
Studies demonstrated that the incidence of atrial fibrillation is significantly increased in patients with diabetes mellitus. Increase of late sodium current (INaL) has been associated with atrial arrhythmias. However, the role of INaL in the setting of atrial fibrillation in diabetes mellitus remained unknown. In this study, we investigated the alteration of INaL in the atria of diabetic mice and the therapeutic effect of its inhibitor (GS967) on the susceptibility of atrial fibrillation. The whole-cell patch-clamp technique was used to detect single cell electrical activities. The results showed that the density of INaL in diabetic cardiomyocytes was larger than that of the control cells at the holding potential of -100 mV. The action potential duration at both 50% and 90% repolarization, APD50 and APD90, respectively, was markedly increased in diabetic mice than in controls. GS967 application inhibited INaL and shortened APD of diabetic mice. High-frequency electrical stimuli were used to induce atrial arrhythmias. We found that the occurrence rate of atrial fibrillation was significantly increased in diabetic mice, which was alleviated by the administration of GS967. In GS967-treated diabetic mice, the INaL current density was reduced and APD was shortened. In conclusion, the susceptibility to atrial fibrillation was increased in diabetic mice, which is associated with the increased late sodium current and the consequent prolongation of action potential. Inhibition of INaL by GS967 is beneficial against the occurrence of atrial fibrillation in diabetic mice.
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Affiliation(s)
- Xuexin Jin
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Yuan Jiang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Genlong Xue
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Yin Yuan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Haixia Zhu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Linfeng Zhan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Yuting Zhuang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Qihe Huang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Ling Shi
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Yue Zhao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Penghui Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Yilin Sun
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Wanzhen Su
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Yang Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China
| | - Baofeng Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China.
| | - Yanjie Lu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China.
| | - Zhiguo Wang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China.
| | - Zhenwei Pan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150081, PR China.
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Liu JF, Wen DH, Li XJ, Liu XY, Xue G. [Diagnostic performance of ultrasound-based risk stratification systems for indeterminate thyroid nodules: comparison of the 2015ATA guidelines with the 2016 KTA/KSThR and 2017ACR guidelines]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:388-392;397. [PMID: 31163542 DOI: 10.13201/j.issn.1001-1781.2019.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Indexed: 11/12/2022]
Abstract
Objective: To evaluate the diagnostic value of the 2015ATA, 2017ACR and 2016KTA/KSThR ultrasound model for indeterminate thyroids nodules. Method: Four hundred and sixty-four patients with thyroid nodules that were initially diagnosed as indeterminate thyroids nodules by fine needle aspiration(FNA) cytology were included in this study. The clinical data and two-dimensional ultrasonographic features were compared between the benign and malignant nodules. The two-dimensional ultrasound images of all nodules were sorted by the 2015ATA, 2017ACR and 2016KTA/KSThR guideline ultrasound model grading criteria, and the malignant risk of different grading were calculated. In order to calculate the diagnosis and other indicators, the optimal threshold drawing from ROC curve was drawn to obtain the cut-off value of 2015ATA, 2017ACR and 2016KTA/KSThR. Result: ①There was no significant difference in age, sex and nodule size between benign and malignant nodules(P>0.05), and there also was no significant difference in irregular margin, microcalcification between benign and malignant nodules.②The sensitivity of the 2015ATA ultrasound model was 87.9%, slightly lower than that of the 2016KTA/KSThR and 2017ACR guidelines(P>0.05).The specificity of 2015ATA was 63.9%, which was significantly higher than that of 2016KTA/KSThR and 2017ACR guidelines(P<0.05). There was no significant difference between 2015ATA ultrasound model and 2016KTA/KSThR guide ultrasound for the accuracy(P>0.05), but the accuracy of 2015ATA ultrasound model was significantly higher than that of 2017ACR guide(P<0.05).③The area under the curve of 2015ATA was slightly lower than that of 2016KTA/KSThR(0.889 VS 0.902, P>0.05) and significantly higher than that of 2017ACR(0.889 VS 0.854, P<0.05). Conclusion: 2015ATA has high specificity and accuracy and moderate sensitivity for the diagnosis of benign and malignant indeterminate thyroids nodules, which is helpful for the clinical evaluation and management of such nodules.
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Affiliation(s)
- J F Liu
- Department of Ultrasonography, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - D H Wen
- Department of Ultrasonography, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - X J Li
- Department of Ultrasonography, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - X Y Liu
- Department of Ultrasonography, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - G Xue
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Hebei North University
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Li YH, Wen DH, Li CX, Li XJ, Xue G. [The role of ATA (2015) guidelines, superb microvascular imaging, and spectral Doppler in differentiation between malignant and benign thyroid nodules]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 31:1152-1156. [PMID: 29798347 DOI: 10.13201/j.issn.1001-1781.2017.15.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Indexed: 11/12/2022]
Abstract
Objective:To evaluate the diagnostic value of ultrasound patterns of 2015 American Thyroid Association (ATA) guidelines, color Doppler flow imaging (CDFI), superb microvascular imaging (SMI), and spectral Doppler in the differentiation of benign and malignant thyroid nodules.Method:The study included 254 thyroid nodules confirmed by fine needle aspiration cytology (FNAC) or histopathologic examination. All nodules were detected by ultrasonography, SMI, CDFI and spectral Doppler respectively. Blood flow detection technologies (CDFI and SMI) were used to classify flow distribution characteristics of thyroid nodules according to Kim's grading criteria. The optimal threshold drawing from ROC curve is calculated to obtain the cut-off value of spectral Doppler.Result:①For benign solid nodules with peripheral flow distribution and malignant solid nodules with central blood flow distribution, the display rates of SMI are higher than those of the CDFI, the differences were statistically significant (P< 0.05). ②There was a significance difference in detecting benign and malignant nodules using spectral Doppler (P< 0.05). ③The specificity and accuracy of combinative modality 2015 ATA+SMI was significantly higher than that of ATA, SMI, and spectral Doppler. There was no significant difference between ATA+SMI and ATA+SMI+spectral Doppler for the sensitivity, specificity, and accuracy.Conclusion:SMI had a better detection rate of blood vessels than CDFI and contribute a certain value in differential diagnosis of benign and malignant thyroid nodules. The combination of 2015 ATA and SMI can improve diagnostic value in the differentiation between benign and malignant thyroid nodules.
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Affiliation(s)
- Y H Li
- Hebei North University, Zhangjiakou, 075000, China
| | - D H Wen
- Department of Ultrosonography, the First Affiliated Hospital of Hebei North University
| | - C X Li
- Department of Ultrosonography, the First Affiliated Hospital of Hebei North University
| | - X J Li
- Department of Ultrosonography, the First Affiliated Hospital of Hebei North University
| | - G Xue
- Hebei North University, Zhangjiakou, 075000, China
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Li YP, Xu HB, Wei J, Li D, Xue G. [The effects of PM 2.5 and air quality index on the emergency of otolaryngology]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:7-11. [PMID: 29798202 DOI: 10.13201/j.issn.1001-1781.2018.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Indexed: 11/12/2022]
Abstract
Objective:To discuss the effects of PM 2.5 and air quality index on the emergency of otolaryngology. Method:Collect in 2015 Beijing tongren hospital emergency department patients with acute otitis media, epistaxis, acute epiglottitis as well as the same time Beijing AQI value and the PM 2.5 density data as the experimental group 1, chooses in 2015 first Affiliated Hospital of Hebei North University similar patient as well as the same time Zhangjiakou AQI value and the PM 2.5 density as the experimental group 2. Statistics the quantity of each sickness of two groups, and the relationships with PM 2.5 and AQI value; Group all data by AQI value and statistics the differences in the incidence rates of each group. Result:The number of cases of acute otitis media and epistaxis in the 2 experimental group were all correlated with the change of PM 2.5 and AQI value, and the correlation was positive between the two groups, However, the incidence of acute epiglottitis was not significantly correlated with the concentration of PM 2.5 and AQI, and there was no significant correlation between the two. The air quality when severe and more pollution when the number of the cases of acute otitis media and epistaxis compared with good air quality for the number of P<0.05, the difference was statistically significant. Conclusion:The increase of PM 2.5 concentration and AQI index is a health risk factor for acute otitis media and epistaxis.
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Affiliation(s)
- Y P Li
- Department of Otolaryngology, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - H B Xu
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University
| | - J Wei
- Department of Otolaryngology, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - D Li
- Department of Otolaryngology, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - G Xue
- Department of Otolaryngology, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
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17
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Chen YM, Wei L, Lin X, Zhang WJ, Wu JF, Xue G. [Expression and clinical significance of Nrf2 and ERK pathway in papillary thyroid carcinoma]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:941-945. [PMID: 29798417 DOI: 10.13201/j.issn.1001-1781.2017.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Indexed: 11/12/2022]
Abstract
Objective:To explore the expression and clinical significance of nuclear factor erythroid-2 related factor 2 (Nrf2) and ERK sinal in papillary thyroid carcinoma (PTC). Method:PTC microassy were detected by immunohistochemical method (IHC). The expression of Nrf2, ERK₂ and p-ERK½ in PTC, para-carcimoma and normal thyroid tissue were detected by Western blot. The transcriptional level of Nrf2 mRNA in PTC, para-carcimoma and normal thyroid tissue were detected by real-time quantitative PCR (qPCR) method. Result:Nrf2, ERK₂, p-ERK½ protein were high expression in group of lymph node metastasis PTC and negative or weak positive expression in para-carcinoma tissue (P<0.01). And the proteins of clinical stage Ⅲ-Ⅳ of PTC groups express higher than without lymph node metastasis group and clinical stage Ⅰ-Ⅱ of PTC group (P<0.05). The expression of Nrf2 protein was positively correlated with ERK₂ and p-ERK½ protein in PTC (r=0.723 2,r=0.668 6,P<0.05). The Western blot results of Nrf2, ERK₂, p-ERK½ had a higher level in PTC than those of paracarcinoma and normal thyroid tissue (P<0.01). The level of Nrf2 mRNA were higher than those of paracarcinoma and normal thyroid tissue (P<0.01). Conclusion:High expresion of Nrf2 may be associated with the progression of papillary thyroid carcinoma, and may relate to the high expression and activity of ERK pathway.
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Affiliation(s)
- Y M Chen
- Basic Medical College, Zhangjiakou, 075000, China
| | - L Wei
- Basic Medical College, Zhangjiakou, 075000, China
| | - X Lin
- Basic Medical College, Zhangjiakou, 075000, China
| | - W J Zhang
- Basic Medical College, Zhangjiakou, 075000, China
| | - J F Wu
- Basic Medical College, Zhangjiakou, 075000, China
| | - G Xue
- Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital, Hebei North University
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Wang YH, Wen DH, Liu XY, Li XJ, Li YH, Xue G. [Assess the diagnostic value of MicroPure system with ultrasonography combined with mSMI in diagnosing thyroid nodules in TI-RADS 3 and 4]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:180-184. [PMID: 29871218 DOI: 10.13201/j.issn.1001-1781.2017.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Indexed: 11/12/2022]
Abstract
Objective:To assess the diagnostic value of MicroPure system with ultrasonography combined with mSMI in diagnosing thyroid nodules inTI-RADS3 and 4; to compare the testing capability in thyroid nodules micro salcifications between MicroPure system and grey-scale ultrasonography; and to compare the diagnostic efficiency between mSMI and color doppler flow imaging (CDFI).Method:Exerting gery-scale ultrasonography and CDFI to choose 86 patients with 106 nodules (64 TI-RADS3 class nodules; 42 TI-RADS4 class nodules). These thyroid nodules were detected by grey-scale ultrasonography, CDFI, MicroPure system with ultrasonography, mSMI, and they were graded by TI-RADS. Then the ultrasound diagnosis value were compared with their FNA and surgical pathology results by gery-scale ultrasonography and CDFI; grey-scale ultrasonography and CDFI and MicroPure system; grey-scale ultrasonography and mSMI and MicroPure system, and diagnostic efficiency between mSMI and CDFI were compared, and the detectability of thyroid nodules micro salcifications between MicroPure system and grey-scale ultrasonography.Result:The results showed that combination of MicroPure system and mSMI had a higher sensitivity (91.44%, P< 0.05); The MicroPure system showed a higher testing capability compare to grey-scale ultrasonography in thyroid nodules micro salcifications (P< 0.05); The mSMI showed a higher sensitivity compared to the CDFI (P< 0.05).Conclusion:Combining mSMI and MicroPure system could improve the discreminability of TI-RADS3, 4 class thyroid nodules, then provide evidence to assess,diagnosis and treat the patients in clinical.
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Affiliation(s)
- Y H Wang
- Hebei North University, Zhangjiakou, 075000, China
| | - D H Wen
- Department of Ultrosonography, the First Affiliated Hospital of Heibei North University
| | - X Y Liu
- Department of Ultrosonography, the First Affiliated Hospital of Heibei North University
| | - X J Li
- Department of Ultrosonography, the First Affiliated Hospital of Heibei North University
| | - Y H Li
- Hebei North University, Zhangjiakou, 075000, China
| | - G Xue
- Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Hebei North University
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19
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Song XY, Shang XL, Zhang YT, Lin YT, Xu GG, Xue G, Zhang QJ, Zou F. [Investigation of CXCR4 mediated chemoresistance in nasopharyngeal carcinoma cell line CNE2]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:887-891;896. [PMID: 29797935 DOI: 10.13201/j.issn.1001-1781.2016.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Indexed: 11/12/2022]
Abstract
Objective:Since nasopharyngeal carcinoma is easy to develop resistance during cisplatin-based chemotherapy,CXCR4 expression levels were elevated in mang tumors,and the factor to do with tumor metastasis and chemotherapy drug resistance,and so on has a very important link.We established cisplatin-resistant nasopharyngeal carcinoma cell line, named as CNE2/DDP, and investigated the function of CXCR4 in molecular mechanism behind this resistance.Method:CNE2/DDP was firstly build up by increasing concentration of cisplatin. And then afterwards,MTT assay, RNA interference techniques, microRNA overexpresion techniques, quantative PCR and western blotting were applied to analyze the function of CXCR4 and its downstream effectors.Result:①the expression of CXCR4 was increased in CNE2/DDP and downregulation of CXCR4 with CXCR4 siRNA was able to decrease the resistance of CNE/DDP to cisplatin; ②the expression of let-7a was decrease in CNE2/DDP, while the expression of bcl-2 was increased. Upregulation of let-7a via transfection of let-7a mimics could downregulate the expression of bcl-2 and damage the resistance of CNE2/DDP to cisplation;③downregulation of CXCR4 through CXCR4 siRNA transfection was capable of improving the expression of let-7a. Conclusion:We were the first to found that CXCR4 was related to chemoresistance of CNE2/DPP to cisplatin. Meanwhile, we confirmed that CXCR4 affected the expression of bcl-2 through regulating the expression of let-7a to modulate the chemoresistance of CNE2/DPP to cisplatin.
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Affiliation(s)
- X Y Song
- Institute of Pathogen Biology and Immunology of Hebei North University, Zhangjiakou,075000,China
| | - X L Shang
- Department of Otolaryngology Head and Neck Surgery,the First Attached Hospital of Hebei North University
| | - Y T Zhang
- Institute of Pathogen Biology and Immunology of Hebei North University, Zhangjiakou,075000,China
| | - Y T Lin
- Department of Otolaryngology Head and Neck Surgery,the First Attached Hospital of Hebei North University
| | - G G Xu
- Department of Otolaryngology Head and Neck Surgery,the First Attached Hospital of Hebei North University
| | - G Xue
- Department of Otolaryngology Head and Neck Surgery,the First Attached Hospital of Hebei North University
| | - Q J Zhang
- Department of Otolaryngology Head and Neck Surgery,the First Attached Hospital of Hebei North University
| | - F Zou
- Institute of Pathogen Biology and Immunology of Hebei North University, Zhangjiakou,075000,China
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20
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Liu YC, Wei J, Li YP, Li D, Liu YB, Xu GG, Xue G, Lin YT, Shang XL. [Study on anti-oxidase in smoking-related laryngeal squamous cell carcinoma]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:733-736. [PMID: 29771025 DOI: 10.13201/j.issn.1001-1781.2016.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the role of oxidative stress in smoking-related laryngeal squamous carcinoma through detecting the expression of antioxidant enzymes in smoking patients. Method:A total of 138 cases with laryngeal squamous cell carcinoma enrolled in the first hospital affiliated the northern he bei college from 2012 to 2015 and forty five volunteers were conducted. All participants were divided into three groups according to smoking index: group A(heavy smoking, 88 cases of laryngeal cancer patients) and group B(no smoking 50 cases of laryngeal cancer patients) and C group(45 heavy smoking volunteers).Catalase(CAT), glutathione peroxidase(GSH-px) and malondialdehyde(MDA) and the expression of NRF2 in serum, tissue adjacent to carcinoma, and carcinoma tissues from each groups were measured, respectively. Result:①the expression of the CAT and GSH-px in group A were significantly lower than that of group B(P <0.05), but higher than that of group C(P <0.05); ②the MDA level of group A is significantly higher than group B(P <0.05) and C group(P <0.01);③NRF2 was highly expressed in carcinoma tissues, and the expression level was negatively correlated with degree of carcinoma differentiation (P <0.05). Conclusion:Compared with nonsmoking patients, heavy smoking patients with laryngeal cancer were under more severe oxidative stress. NRF2 expression level in patients with laryngeal squamous cell carcinomas was associated with pathological stage.
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Affiliation(s)
- Y C Liu
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - J Wei
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - Y P Li
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - D Li
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - Y B Liu
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - G G Xu
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - G Xue
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - Y T Lin
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
| | - X L Shang
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Hebei North University, Zhangjiakou, 075000, China
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Massi D, Brusa D, Merelli B, Falcone C, Xue G, Carobbio A, Nassini R, Baroni G, Tamborini E, Cattaneo L, Audrito V, Deaglio S, Mandalà M. The status of PD-L1 and tumor-infiltrating immune cells predict resistance and poor prognosis in BRAFi-treated melanoma patients harboring mutant BRAFV600. Ann Oncol 2015; 26:1980-1987. [DOI: 10.1093/annonc/mdv255] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 05/19/2015] [Indexed: 01/07/2023] Open
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22
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Xue G, Zippelius A, Wicki A, Mandala M, Tang F, Massi D, Hemmings BA. Integrated Akt/PKB Signaling in Immunomodulation and Its Potential Role in Cancer Immunotherapy. J Natl Cancer Inst 2015; 107:djv171. [DOI: 10.1093/jnci/djv171] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/22/2015] [Indexed: 12/17/2022] Open
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23
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Takeshima SN, Miyasaka T, Matsumoto Y, Xue G, Diaz VDLB, Rogberg-Muñoz A, Giovambattista G, Ortiz M, Oltra J, Kanemaki M, Onuma M, Aida Y. Assessment of biodiversity in Chilean cattle using the distribution of major histocompatibility complex class II BoLA-DRB3 allele. ACTA ACUST UNITED AC 2014; 85:35-44. [PMID: 25430590 DOI: 10.1111/tan.12481] [Citation(s) in RCA: 20] [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: 05/26/2014] [Revised: 10/14/2014] [Accepted: 10/28/2014] [Indexed: 11/30/2022]
Abstract
Bovine leukocyte antigens (BoLAs) are used extensively as markers for bovine disease and immunological traits. In this study, we estimated BoLA-DRB3 allele frequencies using 888 cattle from 10 groups, including seven cattle breeds and three crossbreeds: 99 Red Angus, 100 Black Angus, 81 Chilean Wagyu, 49 Hereford, 95 Hereford × Angus, 71 Hereford × Jersey, 20 Hereford × Overo Colorado, 113 Holstein, 136 Overo Colorado, and 124 Overo Negro cattle. Forty-six BoLA-DRB3 alleles were identified, and each group had between 12 and 29 different BoLA-DRB3 alleles. Overo Negro had the highest number of alleles (29); this breed is considered in Chile to be an 'Old type' European Holstein Friesian descendant. By contrast, we detected 21 alleles in Holstein cattle, which are considered to be a 'Present type' Holstein Friesian cattle. Chilean cattle groups and four Japanese breeds were compared by neighbor-joining trees and a principal component analysis (PCA). The phylogenetic tree showed that Red Angus and Black Angus cattle were in the same clade, crossbreeds were closely related to their parent breeds, and Holstein cattle from Chile were closely related to Holstein cattle in Japan. Overall, the tree provided a thorough description of breed history. It also showed that the Overo Negro breed was closely related to the Holstein breed, consistent with historical data indicating that Overo Negro is an 'Old type' Holstein Friesian cattle. This allelic information will be important for investigating the relationship between major histocompatibility complex (MHC) and disease.
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Affiliation(s)
- S-N Takeshima
- Viral Infectious Diseases Unit, RIKEN, Wako, Saitama, Japan
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24
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Deng H, Xie J, Gu Y, Meng Q, Shen W, Liang W, Xue G, Wang P, Zhang H, Zhang J, Zhang L. C0140: The Phenotypes and Conformational Analysis of Nine Hereditary PC Deficiency Pedigrees in China. Thromb Res 2014. [DOI: 10.1016/s0049-3848(14)50234-4] [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: 11/15/2022]
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25
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Xue G, Kwapinska M, Horvat A, Kwapinski W, Rabou LPLM, Dooley S, Czajka KM, Leahy JJ. Gasification of torrefied Miscanthus × giganteus in an air-blown bubbling fluidized bed gasifier. Bioresour Technol 2014; 159:397-403. [PMID: 24681300 DOI: 10.1016/j.biortech.2014.02.094] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 12/06/2013] [Revised: 02/19/2014] [Accepted: 02/21/2014] [Indexed: 06/03/2023]
Abstract
Torrefaction is suggested to be an effective method to improve the fuel properties of biomass and gasification of torrefied biomass should provide a higher quality product gas than that from unprocessed biomass. In this study, both raw and torrefied Miscanthus × giganteus (M×G) were gasified in an air-blown bubbling fluidized bed (BFB) gasifier using olivine as the bed material. The effects of equivalence ratio (ER) (0.18-0.32) and bed temperature (660-850°C) on the gasification performance were investigated. The results obtained suggest the optimum gasification conditions for the torrefied M × G are ER 0.21 and 800°C. The product gas from these process conditions had a higher heating value (HHV) of 6.70 MJ/m(3), gas yield 2m(3)/kg biomass (H2 8.6%, CO 16.4% and CH4 4.4%) and cold gas efficiency 62.7%. The comparison between raw and torrefied M × G indicates that the torrefied M × G is more suitable BFB gasification.
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Affiliation(s)
- G Xue
- Carbolea, University of Limerick, Ireland
| | - M Kwapinska
- Competence Centre for Biorefining & Biofuels, University of Limerick, Ireland
| | - A Horvat
- Carbolea, University of Limerick, Ireland
| | | | - L P L M Rabou
- Energy Research Centre of Netherlands (ECN), Biomass & Energy Efficiency, Petten, The Netherlands
| | - S Dooley
- Carbolea, University of Limerick, Ireland
| | - K M Czajka
- Energy Engineering and Technology Division, Wroclaw University of Technology, Poland
| | - J J Leahy
- Carbolea, University of Limerick, Ireland.
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Xue G, Yan HL, Zhang Y, Hao LQ, Zhu XT, Mei Q, Sun SH. c-Myc-mediated repression of miR-15-16 in hypoxia is induced by increased HIF-2α and promotes tumor angiogenesis and metastasis by upregulating FGF2. Oncogene 2014; 34:1393-406. [PMID: 24704828 DOI: 10.1038/onc.2014.82] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 01/26/2014] [Accepted: 02/14/2014] [Indexed: 02/07/2023]
Abstract
Previous studies have established the link between aberrant microRNA (miRNA) expression and hypoxia in various neoplasms. However, how these hypoxia-related miRNAs modulate tumor progression is still unclear. Therefore, the patterns of miRNA in colorectal carcinoma cell lines in response to hypoxia or not were first screened and the hypoxia-induced repression of the miR-15-16 cluster was confirmed. Then, this repression was found to be associated with high tumor stage and poor prognosis in colorectal carcinoma and is shown to promote tumor angiogenesis and metastasis by the loss of restriction of its target gene, fibroblast growth factor-2 (FGF2). Moreover, the general and alterative promoters of the miR-15-16 host (deleted in lymphocytic leukemia 2, DLEU2) were mapped, and three c-Myc/Max binding sites in response to the hypoxia-induced repression of miR-15-16 were further identified. Finally, an enhanced stability of c-Myc/Max heterodimer promoted by increased hypoxia-inducible factor-2α (HIF-2α) was validated, and we also verified that the enhancement contributed to the hypoxia-induced repression of miR-15-16. In brief, the c-Myc-mediated transcriptional repression of miR-15-16 in hypoxia is induced by increased HIF-2α and promoted tumor angiogenesis and hematogenous metastasis by the further loss of post-transcriptional inhibition of FGF2. Our study provides a better understanding of the coping mechanisms in response to tumor hypoxia and may be helpful in developing an effective prognostic marker or treatment target against solid tumors.
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Affiliation(s)
- G Xue
- Department of Medical Genetics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - H-L Yan
- Department of Medical Genetics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Y Zhang
- Department of Medical Genetics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - L-Q Hao
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - X-T Zhu
- Department of Medical Genetics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Q Mei
- Department of Medical Genetics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - S-H Sun
- Department of Medical Genetics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
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Abstract
The trefoil factor (TFF) family, which comprises TFF1, TFF2 and TFF3, plays an essential role in epithelial regeneration within the gastrointestinal tract. All three TFFs are present in human saliva; TFF3 is the predominant trefoil peptide. Little is known about the expression and tissue distribution of TFFs in rats, which are commonly used as a model system for human studies. We investigated the localization of the TFF genes that encode secretory peptides in rat submandibular glands (SMG). All three TFFs were expressed in rat SMG, although their location varied. Substantial amounts of TFF1 were detected only in the cytoplasm of epithelial cells in the SMG granular convoluted tubules (GCT), while TFF2 and TFF3 were widely distributed in the cytoplasm of epithelial cells of intercalated ducts (ID), striated ducts (SD) and interlobular ducts (ILD). The three TFFs also were detected especially in the lumens of the SD and ILD. Semi-quantitative RT-PCR and in situ hybridization experiments confirmed TFF1, TFF2 and TFF3 mRNA expressions in the SMG. Greater expression of TFF peptides and mRNA was observed in male rats than in females. The broad expression of TFFs in rat SMG cells and lumens suggests that TFFs function in this organ by their secretion into the duct lumens. We also found differences in TFF expression profiles between rat and human SMG; therefore, caution should be exercised when using rats as a model for human TFF studies.
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Affiliation(s)
- J F Wu
- Department of Histology and Embryology, Hebei North University , Zhangjiakou
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Wang Y, Li J, Chen C, Chen C, Zhu B, Moysis RK, Lei X, Li H, Liu Q, Xiu D, Liu B, Chen W, Xue G, Dong Q. COMT rs4680 Met is not always the 'smart allele': Val allele is associated with better working memory and larger hippocampal volume in healthy Chinese. Genes Brain Behav 2013; 12:323-9. [PMID: 23421762 DOI: 10.1111/gbb.12022] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 10/10/2012] [Accepted: 01/14/2013] [Indexed: 12/18/2022]
Abstract
Catechol-O-methyltransferase (COMT) Val158Met (rs4680) polymorphism plays a crucial role in regulating brain dopamine level. Converging evidence from Caucasian samples showed that, compared with rs4680 Val allele, the Met allele was linked to lower COMT activity, which in turn was linked to better cognitive performance such as working memory (WM) and to a larger hippocampus (a brain region important for WM). However, some behavioral studies have shown that the function of rs4680 appears to vary across different ethnic groups, with Chinese subjects showing an opposite pattern as that for Caucasians (i.e. the Val allele is linked to better cognitive functions related to WM in Chinese). Using a sample of healthy Han Chinese college students (ages from 19 to 21 years), this study investigated the association of COMT Val158Met genotype with behavioral data on a two-back WM task (n = 443, 189M/254F) and T1 MRI data (n = 320, 134M/186F). Results showed that, compared to the Met allele, the Val allele was associated with larger hippocampal volume (the right hippocampus: β = -0.118, t = -2.367, P = 0.019, and the left hippocampus: β = -0.099, t = -1.949, P = 0.052) and better WM performance (β = -0.110, t = -2.315, P = 0.021). These results add to the growing literature on differentiated effects of COMT rs4680 polymorphism on WM across populations and offer a brain structural mechanism for such population-specific genetic effects.
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Affiliation(s)
- Y Wang
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China
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Abstract
Hereditary non-polyposis colorectal cancer (HNPCC) is a dominantly inherited cancer predisposition syndrome that is caused by germline mutations in mismatch repair genes. By screening the core promoters of hMSH2, hMLH1, and hMSH6 in 37 Chinese suspected HNPCC families, a novel germline mutation c.-78_-79delGT was found in the hMSH2 promoter. Its pathogenic effects were supported by the following findings: (a) it co-segregated with HNPCC-related cancers and was not present in the 220 control subjects, (b) tumors harboring the mutation lacked the expression of hMSH2 and showed high microsatellite instability, (c) it significantly decreased the promoter activity, and (d) it abolished the binding ability of the transcription factor E1A-F. Loss of heterozygosity (LOH) was found in three of the tumors studied. Intriguingly, in the tumors from patients II:1 and III:1, LOH occurred in the wild-type allele and agreed well with the traditional 'two-hit' model. In contrast, in the tumor from patient III:3, LOH occurred in the mutant allele. A pathogenic somatic mutation (c.2210+1G>A) was also found in this tumor; therefore, we proposed that the 'second hit' was inactivated by somatic mutation, and the mutant allele was lost during tumor progression; this provided evidence for the new hypothesis for the dual role of LOH.
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Affiliation(s)
- H Yan
- Department of Medical Genetics, College of Basic Medical Sciences, Second Military Medical University, Shanghai, 200433, China
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31
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Affiliation(s)
- W. P. Shi
- a Department of Chemistry , Suzhou University , Suzhou , 215006 , China
| | - W. Q. Zhou
- a Department of Chemistry , Suzhou University , Suzhou , 215006 , China
| | - Y. Cao
- a Department of Chemistry , Suzhou University , Suzhou , 215006 , China
| | - X. B. Wan
- b Department of Chemistry , Nanjing University , Nanjing , 210093 , China
| | - G. Xue
- b Department of Chemistry , Nanjing University , Nanjing , 210093 , China
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Abstract
Three sequencing batch reactors (SBRs) supplied with different carbon sources were investigated. The system supplied with glucose gained the best enhanced biological phosphorus removal (EBPR), although all of them were seeded from the same sludge. With the measurement of poly-beta-hydroxyalkanoate (PHA) concentration, phosphorus content in sludge and extracellular exopolymers (EPs) with scanning electron microscopy (SEM) combined with energy dispersive spectrometry (EDS), it was found that the biosorption effect of EPs played an important role in phosphorus removal and that the amount of PHA at the end of anaerobic phase was not the only key factor to determine the following phosphorus removal efficiency.
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Affiliation(s)
- Y Liu
- School of Environmental Science and Engineering, Dong Hua University, Shanghai, China
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Xue G, Yu WT, Fang Q. Crystal structure of 2,3-bis(2-cyanoethylthio)-6,7-vinylenedithiotetrathiafulvalene, C14H10N2S8. Z KRIST-NEW CRYST ST 2004. [DOI: 10.1524/ncrs.2004.219.2.171] [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] [Indexed: 11/24/2022]
Abstract
Abstract C14H10N2S8, triclinic, P1̅ (no. 2), a = 7.753(2) Å, b = 11.403(3) Å, c = 12.371(5) Å, α = 64.10(2)°, β = 84.62(2)°, γ = 77.34(2)°, V = 959.9 Å3, Z = 2, Rgt(F) = 0.061, wRref(F2) = 0.168, T = 293 K.
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Affiliation(s)
- G. Xue
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, 250100 P. R. China
| | - W.-T. Yu
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, 250100 P. R. China
| | - Q. Fang
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, 250100 P. R. China
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Xu W, Fang Q, Xue G, Yu WT. Crystal structure of tetra-n-butylammonium (1,3-dithiol-2-thione-4,5-dithiolato)-( diethyldithiocarbamato-S,S′)-nickelate(II), (C16H36N)(C8H10NNiS7). Z KRIST-NEW CRYST ST 2003. [DOI: 10.1524/ncrs.2003.218.jg.347] [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: 11/24/2022]
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Wang ZM, Yu WT, Yuan DR, Wang XQ, Xue G, Shi XZ, Xu D, Lv MK. Crystal structure of tricalcium tantalum trigallium disilicon oxide, Ca3TaGa3Si2O14. Z KRIST-NEW CRYST ST 2003. [DOI: 10.1524/ncrs.2003.218.4.389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract Ca3Ga3O14Si2Ta, trigonal, P321 (No. 150), a = 8.1081(4) Å, c = 4.9850(4) Å, V = 283.8 Å3, Z = 1, Rgt(F) = 0.025, wRref(F2) = 0.064, T = 293 K.
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Affiliation(s)
- Z.-M. Wang
- 1Shandong University, Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Jinan, 250100, P. R. China
| | - W.-T. Yu
- 1Shandong University, Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Jinan, 250100, P. R. China
| | - D.-R. Yuan
- 1Shandong University, Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Jinan, 250100, P. R. China
| | - X.-Q. Wang
- 1Shandong University, Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Jinan, 250100, P. R. China
| | - G. Xue
- 1Shandong University, Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Jinan, 250100, P. R. China
| | - X.-Z. Shi
- 1Shandong University, Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Jinan, 250100, P. R. China
| | - D. Xu
- 1Shandong University, Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Jinan, 250100, P. R. China
| | - M.-K. Lv
- 1Shandong University, Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Jinan, 250100, P. R. China
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36
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Yu WT, Xue G, Fang Q, Liu GQ. Crystal structure of 4,5-bis(2′-cyanoethylthio)-1,3-dithiole-2-thione, C9H8N2S5. Z KRIST-NEW CRYST ST 2003. [DOI: 10.1524/ncrs.2003.218.jg.577] [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: 11/24/2022]
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37
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Wang ZM, Yu WT, Yuan DR, Wang XQ, Xue G, Shi XZ, Xu D, Lv MK. Crystal structure of tricalcium tantalum trigallium disilicon oxide, Ca3TaGa3Si2O14. Z KRIST-NEW CRYST ST 2003. [DOI: 10.1524/ncrs.2003.218.jg.421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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38
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Xue G, Yu WT, Fang Q. Crystal structure of 4,5-(ethoxyethylenedithio)-1,3-dithiole-2-thione, C7H8OS5. Z KRIST-NEW CRYST ST 2003. [DOI: 10.1524/ncrs.2003.218.3.323] [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] [Indexed: 11/24/2022]
Abstract
AbstractC7H8OS5, monoclinic, P121/c1 (No. 14), a = 8.3699(7) Å, b = 17.573(2) Å, c = 7.5305(7) Å, β = 103.584(7)°, V = 1076.6 Å3, Z=4, Rgt(F) = 0.033, wRref(F2) = 0.082, T = 293 K.
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Affiliation(s)
- G. Xue
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, Shandong Province, 250100 P. R. China
| | - W.-T. Yu
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, Shandong Province, 250100 P. R. China
| | - Q. Fang
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, Shandong Province, 250100 P. R. China
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39
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Xu W, Fang Q, Xue G, Yu WT. Crystal structure of tetra-n-butylammonium (1,3-dithiol-2-thione-4,5-dithiolato)-( diethyldithiocarbamato-S,S')-nickelate(II), (C16H36N)(C8H10NNiS7). Z KRIST-NEW CRYST ST 2003. [DOI: 10.1524/ncrs.2003.218.3.325] [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] [Indexed: 11/24/2022]
Abstract
AbstractC24H46N2NiS7, monoclinic, C1c1 (No. 9), a = 8.846(2) Å, b = 24.702(6) Å, c = 15.392(3) Å, β = 95.12(1)°, V = 3349.9Å3, Z = 4, Rgt(F) = 0.059, wRref(F2) = 0.166, T = 293 K.
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Affiliation(s)
- W. Xu
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, Shandong, 250100 P. R. China
| | - Q. Fang
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, Shandong, 250100 P. R. China
| | - G. Xue
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, Shandong, 250100 P. R. China
| | - W.-T. Yu
- 1Shandong University, State Key Laboratory of Crystal Materials, Jinan, Shandong, 250100 P. R. China
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40
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Cui Y, Fang Q, Lei H, Xue G, Yu W. Syntheses, structures and second-order nonlinear optical properties of octupolar compounds: 2,4,6-tri-substituted s-triazine. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)01207-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Zhou D, Xue G, Li L, Chen J, Wang Z. Depletion effect on partial organization of atactic polymer chain segments in microcells. Eur Phys J E Soft Matter 2003; 11:111-115. [PMID: 15011051 DOI: 10.1140/epje/i2003-10010-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2003] [Indexed: 05/24/2023]
Abstract
Glass transition for atactic poly(methyl methacrylate) (a-PMMA) prepared in nano-cells by microemulsion polymerization was measured at a faster heating rate after slow cooling of the sample from a temperature above Tg. An additional enthalpy relaxation and glass transition were observed at higher temperatures for the a-PMMA sample due to the partial organization of the chain segments which occurred during microemulsion polymerization. The re-precipitated a-PMMA did not show any self-organization under the same thermal conditions, although there are no changes in molecular weight or tacticity of the polymer chains. A depletion-interaction phenomenon was understood to provide entropic force for the self-organization of polymer chains inside the walls of the microemulsion cells.
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Affiliation(s)
- D Zhou
- Department of Polymer Science and Engineering, Chemistry Building, Nanjing University, Nanjing 210093, PRC
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42
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Xue G, Wang Y, Gu X, Lu Y. Rapid Crystallization of Isotactic Polystyrene by Shock-Cooling and Subsequent Freeze-Drying of Its Very Dilute Solution. Macromolecules 2002. [DOI: 10.1021/ma00092a050] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Xue G, Wang Y, Liu S, Liao YT. FT-IR Study of Concentration Dependence for Crystallization of Isotactic Polystyrene Arising from Freeze-Drying Dilute Solutions. Macromolecules 2002. [DOI: 10.1021/ma00116a043] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Abstract
A computer-controlled galvanometer scanner is adapted for scanning a focused laser beam across a 96-capillary array for laser-induced fluorescence detection. The signal at a single photomultiplier tube is temporally sorted to distinguish among the capillaries. The limit of detection for fluoresceins is 3 x 10(-11) M (S/N = 3) for 5 mW of total laser power scanned at 4 Hz. The observed cross-talk among capillaries is 0.2%. Advantages include the efficient utilization of light due to the high duty-cycle of step scan, good detection performance due to the reduction of stray light, ruggedness due to the small mass of the galvanometer mirror, low cost due to the simplicity of components, and flexibility due to the independent paths for excitation and emission.
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Affiliation(s)
- G Xue
- Ames Laboratory-USDOE and Department of Chemistry Iowa State University, USA
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45
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Ge JJ, Li CY, Xue G, Mann IK, Zhang D, Wang SY, Harris FW, Cheng SZ, Hong SC, Zhuang X, Shen YR. Rubbing-induced molecular reorientation on an alignment surface of an aromatic polyimide containing cyanobiphenyl side chains. J Am Chem Soc 2001; 123:5768-76. [PMID: 11403611 DOI: 10.1021/ja0042682] [Citation(s) in RCA: 133] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Surface lamellar decoration (SLD), surface enhanced Raman scattering (SERS) and optical second harmonic generation (SHG) experiments have been utilized to study the molecular orientation and conformation changes at a rubbed polyimide alignment-layer surface. This aromatic polyimide containing pendent cyanobiphenyl mesogens was synthesized via a polycondensation of 2,2'-bis(3,4-dicarboxy-phenyl)hexafluoropropane dianhydride (6FDA) with bis[omega-[4-(4-cyanophenyl)phenoxy]hexyl] 4,4'-diamino-2,2'-biphenyldicarboxylate (nCBBP, n = 6), abbreviated as 6FDA--6CBBP. Uniform alignment layers, possessing high pretilt angles ranging from 39 degrees to 43 degrees, have been achieved after mechanical rubbing of the polyimide thin film surface at room temperature and subsequent annealing. This is the first time that high pretilt angles have been detected to possess a negative angle (-theta(c)) with respect to the rubbing direction (i.e., opposite to the rubbing direction), considerably different from the conventional pretilt angle (theta(c)) observed along the rubbing direction. This observation is confirmed using magnetic null and SHG methods. Combined polyethylene (PE) SLD and atomic force microscopy experiments reveal that the azimuthal orientation distribution of the long axis of the edge-on PE lamellar crystals is oriented normal to the rubbing direction, indicating that the PE chains are aligned parallel to the rubbing direction. This SLD technique probes the anisotropic surface orientation of the outermost molecules of the rubbed polyimide layer. The SERS results show that prior to rubbing the surface, both the pendent cyanobiphenyls in the side chains and backbones possess nearly planar chain conformations at the polyimide surface. Mechanical rubbing causes not only tilting of the backbone moieties, such as imide-phenylene structure, but also significant conformational rearrangements of the pendent side chains at the surfaces. The molecular mechanism of this unusual alignment is due to the fact that the pendent cyanobiphenyls forms a uniformly tilted conformation on the rubbed surface, and the polar cyano groups point down toward the layer surface deduced from SHG phase measurements. This conformational rearrangement of the side chains results in the formation of fold-like bent structures on the surface, which directly leads to the long axis of cyanobiphenyls having the -theta(c) pretilt angle with respect to the rubbing direction.
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Affiliation(s)
- J J Ge
- The Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA
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Abstract
On-line capillary polymerase chain reaction (PCR) coupled with laser-induced fluorescence detection was successfully demonstrated for individual DNA molecules. A single 30-microm-i.d. fused-silica capillary was used both as the reaction vessel and for isolating single molecules. SYBR green I dye was added into the reaction mixture for dynamic fluorescent labeling. Because of the small inside diameter of the capillary, PCR-amplified DNA fragments from single molecules were localized in the capillary, providing discrete product zones with concentrations at readily detectable levels. By counting the number of peaks in the capillary via electromigration past a detection window, the number of starting DNA molecules could be determined. With selective primer design, only the molecule of interest was detected. Amplification of the 110-bp fragment from an individual human beta-globin gene and the 142-bp fragment from an individual HIV-1 DNA was demonstrated. This opens the possibility of highly selective and sensitive disease diagnosis at a very early stage.
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Affiliation(s)
- H Li
- Ames Laboratory, US Department of Energy, Iowa 50011, USA
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47
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Abstract
An integrated system for DNA sequencing based on a nanoreactor for cycle-sequencing reaction coupled with on-line capillary zone electrophoresis (CZE) for purification and capillary gel electrophoresis (CGE) for separation is presented. Less than 100 nl of premixed reagent solution, which includes dye-labeled terminator pre-mix, bovine serum albumin and template, was hydrodynamically injected into a fused-silica capillary (75 microm I.D.) inside a laboratory-made microthermocycler for cycle sequencing reaction. In the same capillary, the reaction products were purified by CZE followed by on-line injection of the DNA fragments into another capillary for CGE. Over 540 base pairs (bp) of DNA can be separated and the bases called for single-standed DNA with 0.9% error rate. The total time was about 3.5 h, or a cycle time of 2 h with staggered operation. For double-stranded DNA, a longer reaction time was required and base calling up to 490 bp with 1.2% error rate was achieved. The whole system is readily adaptable to automated multiplex operation for DNA sequencing or polymerase chain reaction analysis.
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Affiliation(s)
- G Xue
- Iowa State University, Ames Laboratory-US Department of Energy and Department of Chemistry, 50011, USA
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48
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Abstract
Although liquid chromatography and gas chromatography are the main workhorses in the analytical laboratory, samples can only be analyzed consecutively in an instrument. In this study, capillary zone electrophoresis and micellar electrokinetic chromatography separations are performed in a 96-capillary array system with laser-induced fluorescence detection. Migration times of four kinds of fluoresceins and six polyaromatic hydrocarbons (PAHs) are normalized to one of the capillaries using two internal standards. The relative standard deviations after normalization are 0.6-1.4% for the fluoresceins and 0.1-1.5% for the PAHs. Quantitative calibration of the separations based on peak areas is also performed, again with substantial improvement over the raw data. This opens up the possibility of performing massively parallel separations for high-throughput chemical analysis for process monitoring, combinatorial synthesis, and clinical diagnosis.
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Affiliation(s)
- G Xue
- Ames Laboratory-USDOE, Ames, Iowa, USA
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49
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Sun Y, Hou S, Xue G. [Compatible leaching effect of Concha Ostreae and some commonly-used Chinese medicinal materials]. Zhongguo Zhong Yao Za Zhi 1998; 23:539-41, 576. [PMID: 11599385] [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: 02/21/2023]
Abstract
OBJECTIVE Based on a study of Concha Ostreae, to provide some reference for the rational approach to leaching mineral drugs. METHOD Taking the change rates of compatible leaching and value of A as targets, the compatible leaching effect of Concha Ostreae with Radix et Rhizoma Rhei Praeparata, Radix Scutellariae, Pollen Typhae and Fructus Aurantii lmmaturus was studied. RESULT If Concha Ostreae and the above cited medicinal herbs are decocted together, the yield of extract may be reduced to a certain extent, but the target composition of Radix et Rhizoma Rhei Praeparata and Fructus Aurantii lmmaturus remains intact, only the content of Radix Scutellariae baicalin may be influenced. CONCLUSION The relationship of technology with preparation must be taken into consideration when making choice of the proper way to leach Concha Ostreae.
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Affiliation(s)
- Y Sun
- School of Pharmacy, West China University of Medical Sciences, Chengdu 610041
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50
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Guo S, Chen C, Xue G. [Variation of female migraine after menopause and its prophylaxis and treatment]. Zhonghua Nei Ke Za Zhi 1997; 36:454-6. [PMID: 10436945] [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: 02/13/2023]
Abstract
320 cases of female migraine after menopause according to the diagnostic criteria were studied by using 1:1 matched analysis. It was found that the additional symptoms increased after menopause. Eighty cases available for follow-up were divided into two groups, on which the treatment tests were done. Each patient in group I took Nilestrioli 2 mg twice a month and Perphenazine 12 mg and Doxepin 75 mg per day, while each patient in group II took Tolfenamic acid 300 mg a day. Two months after treatment, the cure rates were 57.58% in group I and 27.78% in group II. Two monthes after the cessation of therapy, 2 cases had relapses in group I. These data indicate that the decrease of estrin disorder and the additional symptoms after monopause play important roles in the change of migraine physiology, and the corresponding treatment methods are rational.
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Affiliation(s)
- S Guo
- Department of Neurology, Jinan Military General Hospital
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