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Li Y, Ou Q, Lu Y, Shen Z, Li J, Zhang Z, Tai L, Li G, Chen H, Zhang G, Zhang L, Sun X, Qiu J, Wei Y, Zhu S, Wang Z, Sun W, Huang Y. Geographic differences in pharmacotherapy patterns and outcomes of acute ischemic stroke in China. BMC Neurol 2024; 24:64. [PMID: 38360588 PMCID: PMC10868026 DOI: 10.1186/s12883-024-03564-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 02/06/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Vast economic and healthcare status discrepancies exist among regions in China, contributing to different treatment patterns. This study was aimed to investigate the current status of pharmacotherapy for acute ischemic stroke (AIS) and outcomes in China and explore the geographic variation in stroke care. METHODS This study was a multicenter prospective registry study, which collected the data of patients with AIS from 80 hospitals in 46 cities in 2015-2017 across China. Poor functional outcome defined as a modified Rankin Scale score of 3-6 was assessed at 3 and 12 months. Multivariate logistic regression was used. RESULTS Among 9973 eligible patients, the number of receiving intravenous thrombolysis (IVT), antiplatelet agents, anticoagulants, statin and human urinary kallidinogenase was 429 (4.3%), 9363 (93.9%), 1063 (10.7%), 6828 (74.7%) and 5112 (51.2%), respectively. Multivariable analysis showed IVT use in northeastern was significantly more frequent than in eastern region (OR = 3.17, 95% CI, 2.53-3.99), while the antiplatelets agents use were less frequent (OR = 0.46, 95%CI: 0.38-0.57). The proportions of poor outcomes at 3 and 12 months were 20.7% and 15.8%, respectively. Multivariate analysis showed AIS patients from northeastern and central region had significantly lower risk of poor outcome at month 3 and 12 than those from eastern region (all P < 0.05). CONCLUSIONS There was a low IVT use and a high antiplatelet agent and statin use for AIS in China. The pharmacotherapy and prognosis of AIS had variation by geographic region. TRIAL REGISTRATION This study was registered with ClinicalTrials.gov (NCT02470624).
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Affiliation(s)
- Ying Li
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular disease discovery, Beijing, China
| | - Qianhua Ou
- Department of medical affairs, Techpool Bio-Pharma Co., LTD, Guangzhou, China
| | - Yuxuan Lu
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular disease discovery, Beijing, China
| | - Zhiyuan Shen
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular disease discovery, Beijing, China
| | - Jieyu Li
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular disease discovery, Beijing, China
| | - Zhuangzhuang Zhang
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular disease discovery, Beijing, China
| | - Liwen Tai
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Guozhong Li
- Department of Neurology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Huisheng Chen
- Department of Neurology, General Hospital of Shenyang Military Command, Shenyang, China
| | - Guiru Zhang
- Department of Neurology, Penglai People's Hospital, Penglai, China
| | - Lei Zhang
- Department of Neurology, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Xuwen Sun
- Department of Neurology, Qindao University Medical College Affiliated Yantai Yuhuangding Hospital, Yantai, China
| | - Jinhua Qiu
- Department of Neurology, Huizhou First Hospital, Huizhou, China
| | - Yan Wei
- Department of Neurology, Harrison International Peace Hospital, Hengshui, China
| | - Sainan Zhu
- Department of Biostatistics, Peking University First Hospital, Beijing, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular disease discovery, Beijing, China
| | - Weiping Sun
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China.
- Beijing Key Laboratory of Neurovascular disease discovery, Beijing, China.
| | - Yining Huang
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China.
- Beijing Key Laboratory of Neurovascular disease discovery, Beijing, China.
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Li M, Li Y, Tai L, Li H, Wang LQ, Zou YL, Feng WF, Liu Y, Liu X, He JY. Cerebral venous thrombosis caused by spontaneous intracranial hypotension due to spontaneous spinal cerebrospinal fluid leakage in the high cervical region: a case report. Front Neurol 2023; 14:1256200. [PMID: 37954648 PMCID: PMC10637572 DOI: 10.3389/fneur.2023.1256200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/10/2023] [Indexed: 11/14/2023] Open
Abstract
Spontaneous intracranial hypotension (SIH) may lead to cerebral venous thrombosis (CVT). This case report describes the diagnostic and treatment processes used for a patient with CVT caused by SIH due to spontaneous spinal cerebrospinal fluid (CSF) leakage in the high cervical region. Clinical data were collected from a 37-year-old man with an initial symptom of spontaneous posterior cervical pain. The diagnostic and treatment processes of SIH-induced CVT were described. A magnetic resonance imaging (MRI) study showed superior sagittal sinus thrombosis, and a lumbar puncture revealed a low initial CSF pressure of less than 60 mmH2O. The patient underwent anticoagulation and fluid rehydration therapies. No abnormalities were observed in the thoracic MRI scan, but a cervical MRI scan revealed a spontaneous CSF leak. An epidural blood patch with autologous blood was performed, and symptoms completely resolved 3 days after the procedure. This report proposes a diagnostic procedure for detecting rare cases of SIH-induced CVT, thereby preventing future misdiagnoses and delayed treatment. When a patient presenting with CVT in conjunction with intracranial hypotension has no history of trauma or piercing, SIH caused by spontaneous spinal CSF leakage should be considered as a potential cause of secondary low intracranial pressure. For detection of CSF leaks at rare sites, an MRI of the whole spine rather than a localized MRI of the spine needs to be performed to avoid misdiagnosis. An epidural blood patch should be performed as soon as possible as it may shorten the length of hospitalization and improve prognosis.
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Affiliation(s)
- Man Li
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yi Li
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Liwen Tai
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hui Li
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Li Qing Wang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yue Li Zou
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Wen Feng Feng
- Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Yue Liu
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaopeng Liu
- Department of Neurosurgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Jun Ying He
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
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Huang D, Lu Y, Sun Y, Sun W, Huang Y, Tai L, Li G, Chen H, Zhang G, Zhang L, Sun X, Qiu J, Wei Y, Jin H. Effect of weekend versus weekday admission on the mortality of acute ischemic stroke patients in China: an analysis of data from the Chinese acute ischemic stroke treatment outcome registry. Front Neurol 2023; 14:1206846. [PMID: 37528854 PMCID: PMC10389271 DOI: 10.3389/fneur.2023.1206846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 06/29/2023] [Indexed: 08/03/2023] Open
Abstract
Background Due to disparities in medical resources in rural and urban areas as well as in different geographic regions in China, the effect of weekend versus weekday admission on the outcomes of acute ischemic stroke (AIS) patients is unknown. Our aim was to investigate whether the outcomes of AIS patients differ according to the day of admission in China. Methods The data were extracted from the Chinese Acute Ischemic Stroke Treatment Outcome Registry (CASTOR), a multicenter prospective study database of patients diagnosed with AIS. The chi-square test (χ2) and logistic regression were used to assess mortality for weekday and weekend admissions among AIS patients stratified by rural or urban status and geographic region (including the eastern, northeastern, central, and western regions). Results In total, 9,256 patients were included in this study. Of these patients, 57.2% were classified as urban, and 42.8% were classified as rural. A total of 6,760 (73%) patients were admitted on weekdays, and 2,496 (27%) were admitted on weekends. There was no significant difference in the mortality rate among patients admitted on weekends compared with those admitted on weekdays in urban (7.5% versus 7.4%) or rural areas (8.8% versus 8.1%; p > 0.05). The mortality rate was the highest among patients admitted on weekends and weekdays (11.6% versus 10.3%) in the northeastern area, without statistical significance before and after adjusting for the patients' background characteristics (p > 0.05). In addition, regression analysis revealed that the mortality of patients admitted on weekdays was more likely to be influenced by regional subgroup, hospital level and intravenous thrombolysis than that of patients admitted on weekends. Conclusion The weekend effect was not observed in the mortality of patients with AIS regardless of rural-urban status or geographic region in China.
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Affiliation(s)
- Diandian Huang
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yuxuan Lu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yongan Sun
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Wei Sun
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yining Huang
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Liwen Tai
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Guozhong Li
- Department of Neurology, First Affiliated Hospital of Harbin Medical University, Neurology, Harbin, China
| | - Huisheng Chen
- Department of Neurology, The General Hospital of Shenyang Military Command, Shenyang, China
| | - Guiru Zhang
- Department of Neurology, Penglai People’s Hospital, Penglai, China
| | - Lei Zhang
- Department of Neurology, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Xuwen Sun
- Department of Neurology, Qindao University Medical College Affiliated Yantai Yuhuangding Hospital, Yantai, China
| | - Jinhua Qiu
- Department of Neurology, Huizhou First Hospital, Huizhou, China
| | - Yan Wei
- Department of Neurology, Harrison International Peace Hospital, Hengshui, China
| | - Haiqiang Jin
- Department of Neurology, Peking University First Hospital, Beijing, China
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Day J, Munoz K, Brook R, McEvoy B, Tai L, DiTrapani K, Kleinman N, Chen C, Stahl M. P.209 Prevalence of healthcare conditions and services used by patients with myotonic dystrophy (DM) pre- and post-diagnosis: A real-world data analysis. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.371] [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: 11/07/2022]
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Lu Y, Sun W, Shen Z, Sun W, Liu R, Li F, Shu J, Tai L, Li G, Chen H, Zhang G, Zhang L, Sun X, Qiu J, Wei Y, Jin H, Huang Y. Regional Differences in Hospital Costs of Acute Ischemic Stroke in China: Analysis of Data From the Chinese Acute Ischemic Stroke Treatment Outcome Registry. Front Public Health 2021; 9:783242. [PMID: 34957035 PMCID: PMC8702643 DOI: 10.3389/fpubh.2021.783242] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/15/2021] [Indexed: 11/13/2022] Open
Abstract
Background and Purpose: Studies on the regional differences in hospital costs of acute ischemic stroke (AIS) are scarce in China. We aimed to explore the regional differences in hospital costs and identify the determinants of hospital costs in each region. Methods: Data were collected from the Chinese Acute Ischemic Stroke Treatment Outcome Registry (CASTOR), a multicenter prospective study on patients diagnosed with AIS and hospitalized from 2015 to 2017. Univariate and multivariate analyses were undertaken to identify the determinants of hospital costs of AIS. Results: A total of 8,547 patients were included in the study, of whom 3,700 were from the eastern area, 2,534 were from the northeastern area, 1,819 were from the central area, and 494 were from the western area. The median hospital costs presented a significant difference among each region, which were 2175.9, 2175.1, 2477.7, and 2282.4 dollars in each area, respectively. Each region showed a similar hospital cost proportion size order of cost components, which was Western medicine costs, other costs, diagnostic costs, and traditional medicine costs, in descending order. Male sex, diabetes mellitus, severe stroke symptoms, longer length of stay, admission to the intensive care unit, in-hospital complications of hemorrhage, and thrombectomy were independently associated with hospital costs in most regions. Conclusion: Hospital costs in different regions showed a similar proportion size order of components in China. Each region had different determinants of hospital costs, which reflected its current medical conditions and provided potential determinants for increasing medical efficiency according to each region's situation.
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Affiliation(s)
- Yuxuan Lu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Weiping Sun
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Zhiyuan Shen
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Wei Sun
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Ran Liu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Fan Li
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Junlong Shu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Liwen Tai
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Guozhong Li
- Department of Neurology, First Affiliated Hospital of Harbin Medical University, Neurology, Harbin, China
| | - Huisheng Chen
- Department of Neurology, The General Hospital of Shenyang Military Command, Shenyang, China
| | - Guiru Zhang
- Department of Neurology, Penglai People's Hospital, Penglai, China
| | - Lei Zhang
- Department of Neurology, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Xuwen Sun
- Department of Neurology, Qingdao University Medical College Affiliated Yantai Yuhuangding Hospital, Yantai, China
| | - Jinhua Qiu
- Department of Neurology, Huizhou First Hospital, Huizhou, China
| | - Yan Wei
- Department of Neurology, Harrison International Peace Hospital, Hengshui, China
| | - Haiqiang Jin
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yining Huang
- Department of Neurology, Peking University First Hospital, Beijing, China
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Shen Z, Jin H, Lu Y, Sun W, Liu R, Li F, Shu J, Tai L, Li G, Chen H, Zhang G, Zhang L, Sun X, Qiu J, Wei Y, Sun W, Huang Y. Predictors and Prognosis of Symptomatic Intracranial Hemorrhage in Acute Ischemic Stroke Patients Without Thrombolysis: Analysis of Data From the Chinese Acute Ischemic Stroke Treatment Outcome Registry. Front Neurol 2021; 12:727304. [PMID: 34650508 PMCID: PMC8506002 DOI: 10.3389/fneur.2021.727304] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 08/27/2021] [Indexed: 11/23/2022] Open
Abstract
Background and Purpose: There is limited information on symptomatic intracranial hemorrhage (sICH) in stroke patients without thrombolysis. This study aimed to evaluate the risk factors of sICH and the association between sICH and the prognosis at 3 and 12 months in acute ischemic stroke patients without thrombolysis. Methods: Data originated from the Chinese Acute Ischemic Stroke Treatment Outcome Registry. Univariate analysis and multivariate logistic regression were used to screen the risk factors of sICH. Multivariable logistic regression models were used to assess the association of sICH with poor outcome and all-cause mortality. Results: Totally, 9,484 patients were included, of which 69 (0.73%) had sICH. Atrial fibrillation (odds ratio [OR], 3.682; 95% confidence interval [CI], 1.945–6.971; p < 0.001), history of tumors (OR, 2.956; 95% CI, 1.115–7.593; p = 0.024), and the National Institutes of Health Stroke Scale (NIHSS) score on admission ([6–15: OR, 2.344; 95% CI, 1.365–4.024; p = 0.002] [>15: OR, 4.731; 95% CI, 1.648–13.583; p = 0.004]) were independently associated with sICH. After adjustment of the confounders, patients with sICH had a higher risk of poor outcome (OR, 1.983; 95% CI, 1.117–3.521; p = 0.018) at 3 months and that of all-cause mortality at 3 (OR, 6.135; 95% CI, 2.328–16.169; p < 0.001) and 12 months (OR, 3.720; 95% CI, 1.513–9.148; p = 0.004). Conclusion: sICH occurred in 0.73% of acute ischemic stroke patients without thrombolysis and was associated with a worse prognosis at 3 and 12 months. Atrial fibrillation, history of tumors, and NIHSS score at admission were independent risk factors of sICH.
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Affiliation(s)
- Zhiyuan Shen
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Haiqiang Jin
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yuxuan Lu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Wei Sun
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Ran Liu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Fan Li
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Junlong Shu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Liwen Tai
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Guozhong Li
- Department of Neurology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Huisheng Chen
- Department of Neurology, General Hospital of Shenyang Military Command, Shenyang, China
| | - Guiru Zhang
- Department of Neurology, Penglai People's Hospital, Penglai, China
| | - Lei Zhang
- Department of Neurology, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Xuwen Sun
- Department of Neurology, Qindao University Medical College Affiliated Yantai Yuhuangding Hospital, Yantai, China
| | - Jinhua Qiu
- Department of Neurology, Huizhou First Hospital, Huizhou, China
| | - Yan Wei
- Department of Neurology, Harrison International Peace Hospital, Hengshui, China
| | - Weiping Sun
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yining Huang
- Department of Neurology, Peking University First Hospital, Beijing, China
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Maurer M, Kristen A, Benson M, Falk R, Buchele G, Brambatti M, Tsimikas S, Viney N, Tai L, Monteiro C, Yang Q, O'Dea L, Schneider E, Geary R, Monia B. EVALUATION OF THE EFFICACY AND SAFETY OF IONIS-TTR-LRX IN PATIENTS WITH TRANSTHYRETIN-MEDIATED AMYLOID CARDIOMYOPATHY: THE CARDIO-TTRANSFORM STUDY. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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de Caprariis B, Bracciale MP, Bavasso I, Chen G, Damizia M, Genova V, Marra F, Paglia L, Pulci G, Scarsella M, Tai L, De Filippis P. Unsupported Ni metal catalyst in hydrothermal liquefaction of oak wood: Effect of catalyst surface modification. Sci Total Environ 2020; 709:136215. [PMID: 31905587 DOI: 10.1016/j.scitotenv.2019.136215] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/26/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
Hydrothermal liquefaction of oak wood was carried out in tubular micro reactors at different temperatures (280-330 °C), reaction times (10-30 min), and catalyst loads (10-50 wt%) using metallic Ni catalysts. For the first time, to enhance the catalytic activity of Ni particles, a coating technique producing a nanostructured surface was used, maintaining anyway the micrometric dimension of the catalyst, necessary for an easier recovery. The optimum conditions for non-catalytic liquefaction tests were determined to be 330 °C and 10 min with the bio-crude yield of 32.88%. The addition of metallic Ni catalysts (Commercial Ni powder and nanostructured surface-modified Ni particle) increased the oil yield and inhibited the char formation through hydrogenation action. Nano modified Ni catalyst resulted in a better catalytic activity in terms of bio-crude yield (36.63%), thanks to the higher surface area due to the presence of flower-like superficial nanostructures. Also, bio-crude quality resulted improved with the use of the two catalysts, with a decrease of C/H ratio and a corresponding increase of the high heating value (HHV). The magnetic recovery of the catalysts and their reusability was also investigated with good results.
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Affiliation(s)
- B de Caprariis
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy
| | - M P Bracciale
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy
| | - I Bavasso
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy
| | - G Chen
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - M Damizia
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy
| | - V Genova
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy; INSTM Reference Laboratory for Engineering of Surface Treatments, Via Eudossiana 18, Rome 00184, Italy
| | - F Marra
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy; INSTM Reference Laboratory for Engineering of Surface Treatments, Via Eudossiana 18, Rome 00184, Italy
| | - L Paglia
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy; INSTM Reference Laboratory for Engineering of Surface Treatments, Via Eudossiana 18, Rome 00184, Italy
| | - G Pulci
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy; INSTM Reference Laboratory for Engineering of Surface Treatments, Via Eudossiana 18, Rome 00184, Italy
| | - M Scarsella
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy
| | - L Tai
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy.
| | - P De Filippis
- Department of Chemical Engineering, Materials, Environment, Sapienza University of Rome, via Eudossiana 18, 00184, Rome, Italy
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Tai L, Teoh HK, Cheong SK. Reprogramming human dermal fibroblast into induced pluripotent stem cells using nonintegrative Sendai virus for transduction. Malays J Pathol 2018; 40:325-329. [PMID: 30580364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
INTRODUCTION Induced pluripotent stem cells (iPSC) that exhibit embryonic stem cell-like properties with unlimited self-renewal and multilineage differentiation properties, are a potential cell source in regenerative medicine and cell-based therapy. Although retroviral and lentiviral transduction methods to generate iPSC are well established, the risk of mutagenesis limits the use of these products for therapeutic applications. MATERIALS AND METHODS In this study, reprogramming of human dermal fibroblasts (NHDF) into iPSC was carried out using non-integrative Sendai virus for transduction. The iPSC clones were characterised based on the morphological changes, gene expression of pluripotency markers, and spontaneous and directed differentiation abilities into cells of different germ layers. RESULTS On day 18-25 post-transduction, colonies with embryonic stem cell-like morphology were obtained. The iPSC generated were free of Sendai genome and transgene after passage 10, as confirmed by RT-PCR. NHDF-derived iPSC expressed multiple pluripotency markers in qRT-PCR and immunofluorescence staining. When cultured in suspension for 8 days, iPSC successfully formed embryoid body-like spheres. NHDF-derived iPSC also demonstrated the ability to undergo directed differentiation into ectoderm and endoderm. CONCLUSION NHDF were successfully reprogrammed into iPSC using non-integrating Sendai virus for transduction.
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Affiliation(s)
- L Tai
- National Cancer Council (MAKNA), Kuala Lumpur, Malaysia.
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Tai L, Huang C, Choo K, Wong C, Cheong S, Tunku Zainol Abidin T. Regulation and role of miRNA and target genes in cell cycle during oxidative stress-induced premature senescence in mesenchymal stem cells. Cytotherapy 2017. [DOI: 10.1016/j.jcyt.2017.02.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sun L, Tai L, Qiu Q, Mitchell R, Fleetwood-Walker S, Joosten EA, Cheung CW. Endocannabinoid activation of CB 1 receptors contributes to long-lasting reversal of neuropathic pain by repetitive spinal cord stimulation. Eur J Pain 2017; 21:804-814. [PMID: 28107590 DOI: 10.1002/ejp.983] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Spinal cord stimulation (SCS) has been shown to be effective in the management of certain neuropathic pain conditions, however, the underlying mechanisms are incompletely understood. In this study, we investigated repetitive SCS in a rodent neuropathic pain model, revealing long-lasting and incremental attenuation of hyperalgesia and a mechanism of action involving endocannabinoids. METHOD Animals were implanted with monopolar electrodes at the time of partial sciatic nerve injury. Dorsal columns at spinal segments T12/13 were stimulated 3 days later (early SCS), and again at day 7 (late SCS) using low-frequency parameters. Hypersensitivity to cutaneous mechanical stimuli was assessed using von Frey filaments. Pharmacological agents, selected to identify endocannabinoid and opioid involvement, were administered intraperitoneally, 10 min before SCS. RESULTS Early SCS caused partial reversal of mechanical hypersensitivity with corresponding changes in the biomarker of central sensitization, [phospho-Tyr1472 ]-GluN2B. The partial reversal of hyperalgesia by early SCS was amplified by co-administration of LY 2183240, an inhibitor of endocannabinoid reuptake/breakdown. This amplification was inhibited by a CB1 R antagonist, AM251, but not by a CB2 R antagonist, AM630. Early SCS-induced reversal of hyperalgesia was attenuated by naloxone, indicating a role for opioids. Late SCS resulted in an incremental level of reversal of hyperalgesia, which was inhibited by AM251, but not by CB2 or opioid receptor antagonists. CONCLUSION The endocannabinoid system, and in particular the CB1 R, plays a pivotal role in the long-lasting and incremental reversal of hyperalgesia induced by repetitive SCS in a neuropathic pain model. SIGNIFICANCE Alternative parameters for repetitive spinal cord stimulation (SCS) at 25/10 Hz elicit particularly long-lasting and incremental reversal of hyperalgesia in a neuropathic pain model through a mechanism involving endocannabinoids.
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Affiliation(s)
- L Sun
- Laboratory and Clinical Research Institute for Pain, Department of Anaesthesiology, The University of Hong Kong, HKSAR, China
| | - L Tai
- Laboratory and Clinical Research Institute for Pain, Department of Anaesthesiology, The University of Hong Kong, HKSAR, China
| | - Q Qiu
- Laboratory and Clinical Research Institute for Pain, Department of Anaesthesiology, The University of Hong Kong, HKSAR, China
| | - R Mitchell
- Centre for Integrative Physiology, Edinburgh Medical School: Biomedical Sciences, The University of Edinburgh, UK
| | - S Fleetwood-Walker
- Centre for Integrative Physiology, Edinburgh Medical School: Biomedical Sciences, The University of Edinburgh, UK
| | - E A Joosten
- Department of Anesthesiology/Pain Management, The University Pain Center Maastricht, Maastricht University Medical Center, The Netherlands
| | - C W Cheung
- Laboratory and Clinical Research Institute for Pain, Department of Anaesthesiology, The University of Hong Kong, HKSAR, China
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12
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Lang MJ, Brennan MS, O'Reilly LA, Ottina E, Czabotar PE, Whitlock E, Fairlie WD, Tai L, Strasser A, Herold MJ. Characterisation of a novel A1-specific monoclonal antibody. Cell Death Dis 2014; 5:e1553. [PMID: 25476901 PMCID: PMC4649835 DOI: 10.1038/cddis.2014.519] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M J Lang
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - M S Brennan
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - L A O'Reilly
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - E Ottina
- Division of Developmental Immunology, Biocenter, Innsbruck Medical University, Innsbruck, Austria
| | - P E Czabotar
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - E Whitlock
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - W D Fairlie
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - L Tai
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - A Strasser
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - M J Herold
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
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Ke F, Voss A, Kerr JB, O'Reilly LA, Tai L, Echeverry N, Bouillet P, Strasser A, Kaufmann T. Erratum: BCL-2 family member BOK is widely expressed but its loss has only minimal impact in mice. Cell Death Differ 2012. [DOI: 10.1038/cdd.2012.143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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14
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Carr J, Ives J, Kelly L, Lambkin R, Oxford J, Mendel D, Tai L, Roberts N. Influenza virus carrying neuraminidase with reduced sensitivity to oseltamivir carboxylate has altered properties in vitro and is compromised for infectivity and replicative ability in vivo. Antiviral Res 2002; 54:79-88. [PMID: 12062393 DOI: 10.1016/s0166-3542(01)00215-7] [Citation(s) in RCA: 146] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Oseltamivir phosphate (Tamiflu, Ro 64-0796) is the first orally administered neuraminidase (NA) inhibitor approved for use in treatment and prevention of influenza virus infection in man. Oseltamivir phosphate is the pro-drug of the active metabolite oseltamivir carboxylate (Ro 64-0802). Extensive monitoring throughout the oseltamivir development programme has identified a very low incidence of patients who have carried drug-resistant virus. The predominant mutation seen is the substitution of arginine for lysine at position 292 of the viral NA. The fitness of clinically isolated influenza virus A/Sydney/5/97 (H3N2) carrying this mutation was markedly reduced in animal models of influenza virus infection. The infectivity and replicative abilities of R292K mutant virus were reduced by at least 2 logs in a mouse model of influenza infection and by 2 and 4 logs, respectively, in the ferret model. Pathogenicity of R292K influenza virus A/Sydney/5/97 was reduced in ferrets as measured by inflammatory and febrile responses at least in parallel to the decrease in replicative ability. The data indicate that the R292K NA mutation compromises viral fitness such that virus carrying this mutation is unlikely to be of significant clinical consequence in man.
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Affiliation(s)
- J Carr
- Roche Discovery Welwyn, 40 Broadwater Road, Welwyn Garden City, Herts AL7 3AY, UK.
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15
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Abstract
PURPOSE To evaluate the potential utility of a technique for analysis of ultrasonographic (US) images obtained at two center frequencies in a phantom model and in a clinical study of liver tumors. MATERIALS AND METHODS A US phantom was built that contained target regions with polystyrene scatterers both smaller and larger than scatterers in the background material. High- and low-frequency US images of target regions were obtained, and changes in the contrast-to-noise ratio (CNR) of the targets relative to the background were determined. In a clinical evaluation, 12 hemangiomas, 13 liver metastases, one adenoma, and two hepatomas were evaluated in a similar manner, and the results were correlated with the histologic findings in resected lesions. RESULTS For targets containing scatterers smaller than those in the background, there was an increase in CNR of higher frequency images. The converse was true for target regions having scatterers larger than those in the background. Liver metastases generally showed an increase in CNR of higher frequency images, whereas hemangiomas generally showed somewhat decreased CNR of higher frequency images, differing significantly from metastases (P < .01-.001). CONCLUSION Changes in CNRs of relatively high- and low-frequency US images may give useful information on the frequency dependence of backscattering, which is descriptive of the histologic findings in lesions and which is not evident with conventional US images.
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Affiliation(s)
- G Sommer
- Department of Radiology, Stanford University Medical Center, CA 94305-5621, USA
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Shieh YS, Wait D, Tai L, Sobsey MD. Methods to remove inhibitors in sewage and other fecal wastes for enterovirus detection by the polymerase chain reaction. J Virol Methods 1995; 54:51-66. [PMID: 7559857 DOI: 10.1016/0166-0934(95)00025-p] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Typical environmental sample concentration procedures developed to purify virions are not always compatible with reverse transcription-polymerase chain reaction (RT-PCR). The processing steps of polyethylene glycol (PEG) precipitation and ultrafiltration were found to enrich not only virions but also certain RT-PCR inhibitors. Inhibitors were eliminated by a single-step guanidinium isothiocyanate (GIT) extraction to purify and precipitate viral genomic RNAs immediately prior to RT-PCR. The detection sensitivity of GIT extraction--RT-PCR was found to be 0.6-0.003 50% tissue culture infectious doses (TCID50) for 9 enteroviruses in infected cell extracts. When sewage, concentrated up to 385,000-fold and seeded with 1-3 plaque-forming units of poliovirus, was extracted with GIT solution, viruses were detectable in samples originally judged negative by direct RT-PCR without GIT extraction. Eleven waste samples (3 sewage, 5 latrine solids, 2 gauze pads extracts and 1 stool) processed by a series of steps that included PEG precipitation, solvent extractions, and Sephadex G-200 chromatography were examined for enteroviruses by RT-PCR, both with and without GIT extraction. GIT extraction eliminated sample inhibitory substances and increased the proportion of enterovirus positive samples from 3 to 7 of 11. GIT extraction in conjunction with virion concentration improves RT-PCR detection of viruses in sewage and other fecal wastes.
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Affiliation(s)
- Y S Shieh
- Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill 27599, USA
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Abstract
Monoclonal antibodies to bovine alpha-crystallin have been produced using hybridoma technology. Five selected hybridoma clones were maintained as ascites tumours in mice and gram quantities of the antibodies were purified from the ascites fluids by affinity chromatography on alpha m-crystallin covalently bound to Sepharose CL-2B. Preliminary characterization studies suggest that the antibodies are pure and monospecific. The antibodies could be divided into two groups on the basis of their reactivities towards iodinated alpha-crystallin, their ability to bind to Protein A-Sepharose, their immunoglobulin subclass, their immunoelectrophoretic patterns and their abilities to react with chicken and opossum alpha-crystallin. The availability of these monoclonal antibodies will greatly facilitate studies on the surface topography of alpha-crystallin.
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