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Huo L, Ma A, Liu H, Wang X, Song C. Diversity and ecological assembly process of aerobic anoxygenic phototrophic bacteria in a low irradiation area, Three Gorges Reservoir. J Environ Sci (China) 2024; 143:116-125. [PMID: 38644009 DOI: 10.1016/j.jes.2023.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 08/09/2023] [Accepted: 08/11/2023] [Indexed: 04/23/2024]
Abstract
Aerobic anoxygenic phototrophic bacteria (AAPB) are significant bacterial groups in aquatic ecosystems, known for their rapid growth and photoheterotrophic characteristics. However, the distribution and ecological assembly process of AAPB in low irradiation freshwater basins remain unclear, warranting further investigation. In this study, we present the diversity, abundance, spatial variations, ecological process, and community interaction of AAPB in sediment of Three Gorges Reservoir (TGR) under low irradiation. Our findings demonstrate the dominant genera of AAPB community that exist in the TGR area also are appeared in different waters, with some regional preference. Moreover, the concentration of pufM gene, an indicator for AAPB, maintains a consistently high numerical level ranging from (2.21 ± 0.44) × 104 to (9.98 ± 0.30) × 107 gene copies/g. Although solar irradiation is suggested as the major factor affecting AAPB, it remains unclear whether and how AAPB differ between regions due to varying solar irradiation levels. Our results show spatial differences between total bacteria and AAPB communities, with significant differences observed only in AAPB. Geographical and environmental factor contributed less than 10% to the spatial difference of community, with sediment type and environmental factors being the key factors influencing microbial community structure. The stochastic process plays a dominant role in the aggregation and replacement of AAPB communities, among which the most contribution is dispersal limitation. For AAPB network, Yoonia and Gemmobacter are the hubs for modules. Those results valuable insights into the AAPB communities in TGR with low irradiation.
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Affiliation(s)
- Lixin Huo
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, College of Resources and Environment, Chongqing 400714, China; Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Anran Ma
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, College of Resources and Environment, Chongqing 400714, China; Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing 400714, China
| | - Hong Liu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, College of Resources and Environment, Chongqing 400714, China; Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xingzu Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, College of Resources and Environment, Chongqing 400714, China; Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Cheng Song
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing 400714, China
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Xu X, Pang T, Zhou Y, Zhang H, Ma A, Yuan C, Chen H, Wen X, Yang Q, Xu X. The Multi-domain Lifestyle Intervention for Cognitive Impairment in Community-Dwelling Older Adults in Hangzhou (The Heritage Study): Study Design and Protocol. J Prev Alzheimers Dis 2024; 11:601-611. [PMID: 38706276 DOI: 10.14283/jpad.2024.59] [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] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
BACKGROUND The globe has been working to promote a multi-domain lifestyle intervention for dementia prevention in older adults, referring to the Worldwide-FINGERS (Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability) initiative. In China, the multi-domain lifestyle intervention has been implemented in rural communities (MIND-China), yet the adaptability of such intervention based on the urban communities in China has not been verified. OBJECTIVE To examine the effectiveness and feasibility of the multi-domain lifestyle intervention on dementia prevention in at-risk community-dwelling older adults in China. DESIGN, SETTING, PARTICIPANTS The multi-domain lifestyle intervention study is a community-based 2-year cluster randomized controlled trial (RCT). A total of 1200 participants aged 60-80 years old will be recruited from twelve communities in Hangzhou, Zhejiang. Inclusion criteria were the Montreal Cognitive Assessment 5 minutes protocol (5 min MoCA) score of 6-9 or the Ascertain Dementia 8 (AD 8) score of ≥2, and having modifiable lifestyle factors. INTERVENTION, MEASUREMENTS, RESULTS Participating communities will be randomized into either the structured multi-domain intervention (SMI) arm or the self-guided intervention (SGI, general health education) arm. The SMI consists of cognitive training, physical exercise, and nutritional and dietary instruction for the first 12 months; and vascular risks monitoring and control for 24 months. The primary outcome is the global cognitive performance, measured by the comprehensive Neuropsychological Test Battery (NTB). The secondary outcomes include domain-specific cognitive performances, physical function, mental health, physiological and biochemical indices, adherence to healthy lifestyles, and neuroimaging metrics. The feasibility of intervention will be evaluated around the five dimensions of the RE-AIM framework and in conjunction with quantitative data, operational data and results of focus group discussions. CONCLUSIONS Following the Worldwide-FINGERS, this cluster RCT will verify the adaptability of the multi-domain lifestyle intervention in the urban community settings in China. This study will add evidence for global dementia prevention and management among older adults.
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Affiliation(s)
- X Xu
- Xin Xu, School of Public Health, the Second Affiliated Hospital, Zhejiang University School of Medicine, China, 310058.
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Zhu J, Qu Y, Lu M, Ma A, Mo J, Wen Z. CT-based radiomics for prediction of pulmonary haemorrhage after percutaneous CT-guided transthoracic lung biopsy of pulmonary nodules. Clin Radiol 2023; 78:e993-e1000. [PMID: 37726191 DOI: 10.1016/j.crad.2023.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/14/2023] [Accepted: 08/23/2023] [Indexed: 09/21/2023]
Abstract
AIM To evaluate the feasibility of intranodular and perinodular computed tomography (CT) radiomics features for predicting the occurrence of pulmonary haemorrhage after percutaneous CT-guided transthoracic lung biopsy (PCTLB) in pulmonary nodules. MATERIALS AND METHODS The data for 332 patients with pulmonary nodules who underwent PCTLB were reviewed retrospectively. Pulmonary haemorrhage after PCTLB was evaluated using CT (144 cases occurred). Radiomics features based on gross nodular (GNV) and perinodular volumes (PNV) were extracted from pre-biopsy CT images and features selection using least absolute shrinkage and selection operator (LASSO) regression, and three radiomics scores (rad-scores) were built. Rad-scores, clinical, and clinical-radiomic models were developed and evaluated to predict the occurrence of pulmonary haemorrhage. RESULTS Five, five, and six significant features were selected for prediction of pulmonary haemorrhage based on GNV, PNV, and GNV + PNV, respectively. Lesion depth was the only clinical characteristics related to pulmonary haemorrhage. Lesion depth and rad-score based on GNV, PNV, and GNV + PNV for predicting the pulmonary haemorrhage achieved areas under the curves (AUCs) of 0.656, 0.645, 0.651, and 0.635 in the validation group, respectively. Three clinical-radiomic models improved the AUCs to 0.743, 0.723, and 0.748. The performance of rad-score_GNV + PNV combined with lesion depth outperformed the clinical model (p=0.024) and the radiomics signature (p=0.038). In addition, the radiomics signatures were significantly associated with higher-grade pulmonary haemorrhage (p<0.05). CONCLUSIONS Radiomics features from intranodular and perinodular regions of pulmonary nodules have good predictive ability for pulmonary haemorrhage after PCTLB, which may provide additional predictive value for clinical practice.
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Affiliation(s)
- J Zhu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - Y Qu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - M Lu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - A Ma
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - J Mo
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - Z Wen
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China.
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Peng C, Guo Q, Zhang T, Chen J, Liu N, Yan P, Lu Y, Ma A, Lv P, Liu J, Xie P. Maintenance Therapy for Recurrent or Metastatic Cervical Cancer: A Multicenter, Cohort Study. Int J Radiat Oncol Biol Phys 2023; 117:e537-e538. [PMID: 37785662 DOI: 10.1016/j.ijrobp.2023.06.1827] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Maintenance therapy with alternative agents after chemotherapy was shown to improve the overall survival in some advanced cancers such as breast cancer, lung cancer, ovarian cancer and so on. However, maintenance therapy is not accepted as the standard treatment for recurrent/metastatic cervical cancer. Aim of this study is to elucidate the efficacy of maintenance therapy in cervical cancer and to explore the factors associated with the prognosis of recurrent or metastatic cervical cancer. MATERIALS/METHODS In this multicenter cohort study, we retrospectively collected patients with a diagnosis of either recurrent or stage IVB cervical cancer to receive first-line chemotherapy with or without maintenance therapy. Patients did not have disease progression with first-line chemotherapy and were divided into maintenance therapy group (Arm A) and conventional chemotherapy group (Arm B). Information on clinical characteristics, metastasis information, treatment outcome and survival of patients was collected using an electronic medical record system. The endpoints of the study were OS and PFS. Data were analyzed for general characteristics and survival using statistical software, and the results were considered statistically significant at P < 0.05. RESULTS Between January 2019 and July 2021, a total of 270 patients were enrolled from 6 institutions in China. 26 patients were excluded because of short treatment cycles (less than 3 cycles). Finally, a total of 66 patients in Arm A and 178 patients in Arm B were analyzed for survival. The addition of maintenance significantly prolonged overall survival. Overall survival at 3 year was 50.1% in Arm A and 27.8% in Arm B (median overall survival, ≥36 months vs. 22 months; P<0. 001). The median progression-free survival was 21 months in Arm A and 14 months in Arm B (P = 0.025). Univariate survival analysis showed that age, maintenance therapy, combined radiotherapy, and number of extra-pelvic metastases were associated with PFS. Further multifactorial analysis showed that maintenance therapy, combined radiotherapy, and number of extra-pelvic metastases were independent prognostic factors for patients with recurrent or metastatic cervical cancer. CONCLUSION The addition of maintenance therapy significantly prolonged overall survival as well as progression-free survival in patients with recurrent or metastatic cervical cancer and did not increase the incidence of serious adverse events. It is time to consider maintenance therapy as the standard treatment after conventional chemotherapy for recurrent or metastatic cervical cancer, rather than waiting for disease progression.
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Affiliation(s)
- C Peng
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Q Guo
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - T Zhang
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - J Chen
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - N Liu
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - P Yan
- Department of Gastrointestinal, Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Y Lu
- Department of Radiation Oncology, The First Affiliated Hospital of Wannan Medical College, Wuhan, China
| | - A Ma
- Department of Thoracic Surgery, East Hospital of Shandong First Medical University Affiliated Provincial Hospital, Jinan, China
| | - P Lv
- Department of Gynecology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - J Liu
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - P Xie
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
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Lu M, Qu Y, Ma A, Zhu J, Zou X, Lin G, Li Y, Liu X, Wen Z. [Prediction of 1p/19q codeletion status in diffuse lower-grade glioma using multimodal MRI radiomics]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:1023-1028. [PMID: 37439176 DOI: 10.12122/j.issn.1673-4254.2023.06.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
OBJECTIVE To develop a noninvasive method for prediction of 1p/19q codeletion in diffuse lower-grade glioma (DLGG) based on multimodal magnetic resonance imaging (MRI) radiomics. METHODS We collected MRI data from 104 patients with pathologically confirmed DLGG between October, 2015 and September, 2022. A total of 535 radiomics features were extracted from T2WI, T1WI, FLAIR, CE-T1WI and DWI, including 70 morphological features, 90 first order features, and 375 texture features. We constructed logistic regression (LR), logistic regression least absolute shrinkage and selection operator (LRlasso), support vector machine (SVM) and Linear Discriminant Analysis (LDA) radiomics models and compared their predictive performance after 10-fold cross validation. The MRI images were reviewed by two radiologists independently for predicting the 1p/19q status. Receiver operating characteristic curves were used to evaluate classification performance of the radiomics models and the radiologists. RESULTS The 4 radiomics models (LR, LRlasso, SVM and LDA) achieved similar area under the curve (AUC) in the validation dataset (0.833, 0.819, 0.824 and 0.819, respectively; P>0.1), and their predictive performance was all superior to that of resident physicians of radiology (AUC=0.645, P=0.011, 0.022, 0.016, 0.030, respectively) and similar to that of attending physicians of radiology (AUC=0.838, P>0.05). CONCLUSION Multiparametric MRI radiomics models show good performance for noninvasive prediction of 1p/19q codeletion status in patients with in diffuse lower-grade glioma.
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Affiliation(s)
- M Lu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Y Qu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - A Ma
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - J Zhu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Zou
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - G Lin
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Y Li
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Liu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Z Wen
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
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Wu D, Jiang Y, Wang Z, Ni Y, Ma A, Zhou Y, Liu R, Lou YR, Wang Q. Metabolomics analysis of islet regeneration in partial pancreatectomy mice reveals increased levels of long-chain fatty acids and activated cAMP signaling pathway. Biochem Biophys Res Commun 2023; 667:34-42. [PMID: 37207562 DOI: 10.1016/j.bbrc.2023.05.018] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 05/03/2023] [Indexed: 05/21/2023]
Abstract
Islet regeneration is a complex process involving multiple metabolic adaptions, but the specific characterization of the islet metabolome in relation to cell proliferation has not been established. This study aimed to investigate the metabolomic changes of regenerative islets from partial pancreatectomy (Ppx) mice and speculate underlying mechanisms. Islet samples were collected from C57/BL6 mice undergoing 70-80% Ppx or sham surgery, followed by analyses of glucose homeostasis, islet morphology, and untargeted metabolomics profiles using liquid chromatography-tandem mass spectrometry (LC-MS/MS). There is no difference in blood glucose and body weight between sham and Ppx mice. After surgery, the Ppx mice showed impaired glucose tolerance, increased Ki67 positive beta cells, and elevated beta-cell mass. LC-MS/MS analysis identified fourteen differentially changed metabolites in islets of Ppx mice, including long-chain fatty acids (e.g., docosahexaenoic acid) and amino acid derivatives (e.g., creatine). Pathway analysis based on the KEGG database revealed five significantly enriched signaling pathways including cAMP signaling pathway. Further immunostaining assay on pancreatic tissue sections showed the levels of p-CREB, a transcription factor downstream of cAMP, elevated in islets from Ppx mice. In conclusion, our results demonstrate that islet regeneration involves metabolic alterations in long-chain fatty acids and amino acid derivatives, as well as the activation of the cAMP signaling pathway.
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Affiliation(s)
- Di Wu
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China; Institute of Endocrinology and Diabetes, Fudan University, Shanghai, China
| | - Yaojing Jiang
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China; Institute of Endocrinology and Diabetes, Fudan University, Shanghai, China
| | - Zhihong Wang
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China; Institute of Endocrinology and Diabetes, Fudan University, Shanghai, China
| | - Yunzhi Ni
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China; Institute of Endocrinology and Diabetes, Fudan University, Shanghai, China
| | - Anran Ma
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China; Institute of Endocrinology and Diabetes, Fudan University, Shanghai, China
| | - Yue Zhou
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China; Institute of Endocrinology and Diabetes, Fudan University, Shanghai, China
| | - Rui Liu
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China; Institute of Endocrinology and Diabetes, Fudan University, Shanghai, China
| | - Yan-Ru Lou
- School of Pharmacy, Fudan University, Shanghai, China
| | - Qinghua Wang
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China; Institute of Endocrinology and Diabetes, Fudan University, Shanghai, China.
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Ma A, Liu H, Song C, Tian E, Wang X. Home-field advantage in litter decomposition: A critical review from a microbial perspective. J Basic Microbiol 2023. [PMID: 36978226 DOI: 10.1002/jobm.202200657] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 03/04/2023] [Accepted: 03/09/2023] [Indexed: 03/30/2023]
Abstract
Litter decomposition is a key component of biogeochemical recycling. It is highly sensitive to changes in microbial community assembly. An interesting phenomenon in litter decomposition is the home-field advantage (HFA), where litter decomposes faster in native locations than in foreign sites. However, the role of the HFA in litter decomposition remains controversial. This review examines current evidence relating to the HFA using the leaf economics spectrum theory and the Lotka-Volterra niche competition model and explains its influence on the microbial assembly process. Here, it is proposed that the microbial community assembly could help to explain the HFA at spatiotemporal scales. This review improves understanding of the role of the succession of microbial communities in HFA litter decomposition and in the elemental cycle of forest systems.
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Affiliation(s)
- Anran Ma
- College of Architecture and Urban Planning, Chongqing Jiaotong University, Chongqing, China
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
- Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing, China
| | - Hong Liu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing, China
| | - Cheng Song
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing, China
| | - Enling Tian
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing, China
| | - Xingzu Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- Key Laboratory of Reservoir Aquatic Environment, Chinese Academy of Sciences, Chongqing, China
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Wang Z, Fan L, Ni Y, Wu D, Ma A, Zhao Y, Li J, Cui Q, Zhou Y, Zhang L, Lou YR, Prud'homme GJ, Wang Q. Combined therapy of GABA and sitagliptin prevents high-fat diet impairment of beta-cell function. Mol Cell Endocrinol 2023; 559:111755. [PMID: 36049597 DOI: 10.1016/j.mce.2022.111755] [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: 05/22/2022] [Revised: 08/08/2022] [Accepted: 08/15/2022] [Indexed: 02/03/2023]
Abstract
We recently demonstrated that combined therapy of GABA and sitagliptin promoted beta-cell proliferation, and decreased beta-cell apoptosis in a multiple low-dose streptozotocin (STZ)-induced beta-cell injury mouse model. In this study, we examined whether this combined therapy is effective in ameliorating the impairment of beta-cell function caused by high-fat diet (HFD) feeding in mice. Male C57BL/6J mice were fed normal chow diet, HFD, or HFD combined with GABA, sitagliptin, or both drugs. Oral drug daily administration was initiated one week before HFD and maintained for two weeks. After two weeks of intervention, we found that GABA or sitagliptin administration ameliorated the impairment of glucose tolerance induced by HFD. This was associated with improved insulin secretion in vivo. Notably, combined administration of GABA and sitagliptin significantly enhanced these effects as compared to each of the monotherapies. Combined GABA and sitagliptin was superior at increasing beta-cell mass, and associated Ki67+ and PDX-1+ beta-cell counts. In addition, we found that HFD-induced compensatory beta-cell proliferation was associated with increased activation of unfolded protein response (UPR), as indicated by BiP expression. This could be an important mechanism of compensatory beta-cell proliferation, and beta cells treated with GABA and sitagliptin showed greater UPR activation. Our results suggest that the combined use of these agents produces superior therapeutic outcomes.
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Affiliation(s)
- Zhihong Wang
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Linling Fan
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Yunzhi Ni
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Di Wu
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Anran Ma
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Ying Zhao
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Jia Li
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Qiaoli Cui
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Yue Zhou
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Li Zhang
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Yan-Ru Lou
- Department of Clinical Pharmacy and Drug Administration, School of Pharmacy, Fudan University, Shanghai, China
| | - Gerald J Prud'homme
- Keenan Research Center for Biomedical Science, Division of Endocrinology and Metabolism, Unity Health Toronto (St. Michael's site), Toronto, Ontario, Canada; Department of Laboratory Medicine, Unity Health Toronto. Department of Laboratory Medicine and Pathobiology, University of Toronto, Ontario, Canada
| | - Qinghua Wang
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
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Wu C, Ma A, Sun Q, Zhao X. A patient with glucocorticoid hypersensitivity syndrome. Chin Med J (Engl) 2022; 135:2611-2613. [PMID: 35089887 PMCID: PMC9945362 DOI: 10.1097/cm9.0000000000001977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Indexed: 01/26/2023] Open
Affiliation(s)
- Chenwei Wu
- Department of Endocrinology and Metabolism, Shanghai Public Health Clinical Center, Shanghai Medical School, Fudan University, Shanghai, China
| | - Anran Ma
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China
| | - Quanya Sun
- Department of Endocrinology and Metabolism, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai, China
| | - Xiaolong Zhao
- Department of Endocrinology and Metabolism, Shanghai Public Health Clinical Center, Shanghai Medical School, Fudan University, Shanghai, China
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Chen Y, Li L, Zhu X, Shen Y, Ma A, Zhang X, Chen P, Lu C. Urban Low-Rise Residential Areas Provide Preferred Song Post Sites for a Resident Songbird. Animals (Basel) 2022; 12:ani12182436. [PMID: 36139294 PMCID: PMC9494978 DOI: 10.3390/ani12182436] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/05/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Urbanization is expanding rapidly worldwide, and brings additional selection pressure on animals. The song differences between urban and rural songbirds have been widely verified, but the effects of urban morphological variation on long-settled urban birds have been poorly explored. Here, we investigated the distribution and song differences of a common resident songbird—the oriental magpie-robin (Copsychus saularis) between three urban morphology types (i.e., urban park, low-rise residential area, and high-rise residential area). The results indicated that the population density in low-rise residential areas was significantly higher than in urban parks, while it was the lowest in high-rise residential areas. Males in low-rise residential areas had greater song length, syllable numbers, frequency bandwidth, and song diversity than those in urban parks. The song differences were mainly related to habitat types, independent of singing height and perch type. Our findings suggest that low-rise residential areas may provide preferred song post sites for the oriental magpie-robin, which is well-adapted to the low-rise building morphology, but rejects the emerging high-rise buildings. Future studies are needed to assess the effects of urban morphological variation on more resident animals to determine which urban morphologies are conducive to enhancing biodiversity and encouraging animals to settle in urban areas.
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Affiliation(s)
- Yanhong Chen
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Lijing Li
- School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China
| | - Xiaotian Zhu
- School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China
| | - Yicheng Shen
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Anran Ma
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Xinyu Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China
| | - Pan Chen
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
- Correspondence: (P.C.); (C.L.)
| | - Changhu Lu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
- Correspondence: (P.C.); (C.L.)
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11
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Richardson E, Krishnan N, Stafford F, Yeates L, Nowak N, McGaughran J, Wildschutt J, Smith J, Turner C, Kevin L, Davis A, Macciocca I, Connell V, Ma A, Semsarian C, Bagnall R, Siggs O, Skinner J, MacArthur D, Ingles J. The Elusive Hearts Study: Seeking Genetic Diagnoses in Gene-elusive Cases of Rare Monogenic Cardiovascular Diseases. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.04.036] [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: 11/17/2022]
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12
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Ma A, Kim J, Miller CE, Mustapich TL, Abraham JP, Downie SA, Mishall PL. Pointing in a different direction: a case of bilateral absence of extensor indicis. Folia Morphol (Warsz) 2021; 81:520-525. [PMID: 33778941 DOI: 10.5603/fm.a2021.0030] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 03/05/2021] [Indexed: 11/25/2022]
Abstract
Understanding anatomical variations, as well as, normal anatomy of the muscles and tendons of the hand is vital for successful clinical evaluation and surgery. A number of extensor muscle and tendon variations have been reported in the literature including duplication, triplication, and absence. We report a rare anatomical variation that includes bilateral absence of the extensor indicis (EI) muscles and bilateral duplication of the extensor digitorum (ED) tendon to the second digit in the forearm of an 83-year-old male cadaver during routine upper limbs dissection. In the present case, only three muscles were present in the deep compartment: extensor pollicis longus (EPL), extensor pollicis brevis (EPB), and abductor pollicis longus (APL) with bilateral absence of EI. The reported prevalence of bilateral absence of EI muscle and tendon ranges from 0.5 to 3.5% [1, 26]. The prevalence of an additional index tendon arising bilaterally from the ED muscle belly is 3.2 % of the population [1]. Extension of the index finger is governed by the actions of EI and ED. However, the four tendons of ED are linked to each other by juncturae tendinum (JT), restricting independent extension of the digits in certain postures, e.g. when the hand is fisted. With fisted hand, EI controls extension of the index finger. Clinically, EI tendons are used for tendon reconstruction procedures to restore function to the hand and thumb after trauma or tendon rupture. This report highlights the importance of anticipating anatomical variations and conducting pre-operative evaluations to confirm the presence of EI when planning tendon transfer procedures.
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Affiliation(s)
- A Ma
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - J Kim
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - C E Miller
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - T L Mustapich
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - J P Abraham
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - S A Downie
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of Physical Medicine and Rehabilitation, Albert Einstein College of Medicine, Bronx, NY, United States
| | - P L Mishall
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States. .,Department of Ophthalmology and Visual Sciences, Albert Einstein College of Medicine, Bronx, NY, United States.
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13
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Cui Q, Liao Y, Jiang Y, Huang X, Tao W, Zhou Q, Shao A, Zhao Y, Li J, Ma A, Wang Z, Zhang L, Yang Z, Liang Y, Wu M, Yang Z, Zeng W, Wang Q. Novel GLP-1 analog supaglutide improves glucose homeostasis in diabetic monkeys. J Endocrinol 2021; 248:145-154. [PMID: 33258802 DOI: 10.1530/joe-20-0255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 11/26/2020] [Indexed: 11/08/2022]
Abstract
Glucagon-like peptide 1 (GLP-1) is an insulinotropic hormone and plays an important role in regulating glucose homeostasis. GLP-1 has a short half-life (t1/2 < 2 min) due to degrading enzyme dipeptidyl peptidase-IV and rapid kidney clearance, which limits its clinical application as a therapeutic reagent. We demonstrated recently that supaglutide, a novel GLP-1 mimetic generated by recombinant fusion protein techniques, exerted hypoglycemic and β-cell trophic effects in type 2 diabetes db/db mice. In the present study, we examined supaglutide's therapeutic efficacy and pharmacokinetics in diabetic rhesus monkeys. We found that a single subcutaneous injection of supaglutide of tested doses transiently and significantly reduced blood glucose levels in a dose-dependent fashion in the diabetic monkeys. During a 4-week intervention period, treatment of supaglutide of weekly dosing dose-dependently decreased fasting and random blood glucose levels. This was associated with significantly declined plasma fructosamine levels. The repeated administration of supaglutide remarkably also decreased body weight in a dose-dependent fashion accompanied by decreased food intake. Intravenous glucose tolerance test results showed that supaglutide improved glucose tolerance. The intervention also showed enhanced glucose-stimulated insulin secretion and improved lipid profile in diabetic rhesus monkeys. These results reveal that supaglutide exerts beneficial effects in regulating blood glucose and lipid homeostasis in diabetic rhesus monkeys.
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Affiliation(s)
- Qiaoli Cui
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Yijing Liao
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Yaojing Jiang
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaohang Huang
- Shanghai Yinuo Pharmaceutical Co., Ltd., Shanghai, China
| | - Weihong Tao
- Shanghai Yinuo Pharmaceutical Co., Ltd., Shanghai, China
| | - Quanquan Zhou
- Shanghai Yinuo Pharmaceutical Co., Ltd., Shanghai, China
| | - Anna Shao
- Shanghai Yinuo Pharmaceutical Co., Ltd., Shanghai, China
| | - Ying Zhao
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Jia Li
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Anran Ma
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhihong Wang
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Li Zhang
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Zunyuan Yang
- Primed Non-Human Primate Research Centre (Sichuan Primed Shines Bio-tech Co., Ltd.), Chengdu, Sichuan, China
| | - Yinan Liang
- Primed Non-Human Primate Research Centre (Sichuan Primed Shines Bio-tech Co., Ltd.), Chengdu, Sichuan, China
| | - Minglin Wu
- Primed Non-Human Primate Research Centre (Sichuan Primed Shines Bio-tech Co., Ltd.), Chengdu, Sichuan, China
| | - Zhenyan Yang
- Primed Non-Human Primate Research Centre (Sichuan Primed Shines Bio-tech Co., Ltd.), Chengdu, Sichuan, China
| | - Wen Zeng
- Primed Non-Human Primate Research Centre (Sichuan Primed Shines Bio-tech Co., Ltd.), Chengdu, Sichuan, China
| | - Qinghua Wang
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
- Shanghai Yinuo Pharmaceutical Co., Ltd., Shanghai, China
- Keenan Research Centre for Biomedical Science, Division of Endocrinology and Metabolism, St. Michael's Hospital, Toronto, Ontario, Canada
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Luo L, Wang Y, Du Y, Dong C, Ma A, Wang T. MOG1 restores the expression and function of SCN5A-p.R104W through sec23a-mediated forward trafficking. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Brugada syndrome (BrS) is an inherited disease which causes fatal arrhythmias and sudden cardiac death. Mutations in SCN5A gene, which encoding cardiac sodium channel (NaV1.5), are the most common genotype of BrS patients. Some SCN5A-related variants were reported to retain NaV1.5 in endoplasmic reticulum (ER) due to trafficking deficiency. MOG1 was previously reported to interact with NaV1.5 and increased sodium current (INa) through enhancing the trafficking. However, its molecular mechanisms are still unclear. Coat protein complex II (COPII) is responsible for the ER to Golgi transport. Sec23 forms the inner coat of COPII and participates in cargo proteins selection.
Purpose
To demonstrate that MOG1 rescues SCN5A-related variants by enhancing the forward trafficking through Sec23a-NaV1.5 interaction.
Methods
Site directed mutagenesis, immunofluorescence staining, biotinylation assay, Western blot analysis and whole-cell patch clamp recording were used. CRISPR/Cas9 was used to knock out Sec23a expression in HEK293 cells.
Results
We found that SCN5A-p.R104W was characterized as reduced NaV1.5 level and lack of INa. The variant SCN5A-p.R104W was mainly distributed in ER. MOG1 could rescue the total and surface expression of SCN5A-p.R104W but could not restore INa (Figure 1a). Considering that most patients are heterozygous, co-transfection of SCN5A-WT and SCN5A-p.R104W were obtained. We found MOG1 could increase both NaV1.5 level and INa of heterozygous expressed SCN5A-p.R104W. We further revealed an interaction between NaV1.5 and Sec23a by co-immunoprecipitation (Co-IP) assay. The interaction between NaV1.5 and Sec23a was increased by MOG1, which indicates that Sec23a participates in MOG1-mediated increase in NaV1.5 level (Figure 1b). Knockout of Sec23a reduced cell surface, but not total, NaV1.5 level (Figure 1c and 1d). Next, the Sec23a knockout HEK293 cells were co-transfected with SCN5A-p.R104W and pcDNA3 or MOG1. MOG1 could not increase SCN5A-p.R104W protein level in Sec23a knockout cells.
Conclusion
Our data demonstrated a novel mechanism that MOG1 restores the expression and function of SCN5A-p.R104W by enhancing its forward trafficking through Sec23a-NaV1.5 interaction.
Figure 1
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Natural Science Foundation of China
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Affiliation(s)
- L Luo
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - Y Wang
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - Y Du
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - C Dong
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - A Ma
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - T Wang
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
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15
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Xue Y, Ma Q, Chen S, Wang X, Ma A. U-shaped association of sphingosine-1-phosphate level with mortality in chronic systolic heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The immunomodulatory molecule sphingosine-1-phosphate (S1P) has received attention in the cardiovascular field due to its significant cardioprotective effects, as revealed in animal studies. Until now, it has been unclear what is the normal range of S1P in chronic heart failure patients and whether it is related to long term prognosis.
Purpose
The purpose of our study was to identify the distribution characteristics of S1P in systolic heart failure patients and the prognostic value of S1P for long-term prognosis.
Methods
We recruited 210 chronic systolic heart failure patients from June 2014 to December 2015. Meanwhile 54 healthy people in the same area were selected as controls. Plasma S1P was measured by mass spectrometry. Patients were grouped according to the baseline S1P level quartiles, and restricted cubic spline plots described a U-shaped association between S1P and all cause death. Cox proportional hazard analysis was used to determine the relationship between category of S1P and all-cause death. Survival curves were using the Kaplan-Meier method and the log-rank test was used for comparison.
Results
Compared with the control group, the plasma S1P in chronic heart failure patients demonstrated a higher mean level (1.269 μmol/L vs 1.122 μmol/L, P=0.006) and a larger standard deviation (0.441 vs 0.316, P=0.022). After a follow-up period of 31.7±10.3 months, the second quartile (0.967–1.192μml/L) with largely normal S1P levels had the lowest all-cause mortality and either an increase (HR=3.87, 95% CI 1.504–9.960, P=0.005, adjusted HR=3.134, 95% CI 1.211–8.111, P=0.019) or a decrease (HR=3.271, 95% CI 1.277–8.381, P=0.014, adjusted HR=1.90, 95% CI 0.711–5.083, P=0.200) predicted a worse prognosis.
Conclusions
Plasma S1P levels in systolic heart failure patients are related to the long-term all-cause mortality with a U-shaped correlation. Through restoring abnormal levels to a normal range instead of simply up regulation or down regulation, S1P may have the potential to be a therapeutic target for reducing the risk of death in patients with heart failure in the future.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Ministry of Science and Technology of the People's Republic of China. Ministry of Finance of the People's Republic of China.
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Affiliation(s)
- Y Xue
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
| | - Q Ma
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
| | - S Chen
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
| | - X Wang
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
| | - A Ma
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
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16
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Zhou T, Wang L, Ma A, Zhang Y, Rui M. PMU26 The Health-Related Quality of Life in Different Disease Population Based on EQ-5D-5L: A Systematic Review. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.384] [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: 10/23/2022]
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17
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Morita PP, Rocha AS, Shaker G, Lee D, Wei J, Fong B, Thatte A, Karimi A, Xu L, Ma A, Wong A, Boger J. Comparative Analysis of Gait Speed Estimation Using Wideband and Narrowband Radars, Thermal Camera, and Motion Tracking Suit Technologies. J Healthc Inform Res 2020; 4:215-237. [PMID: 35415448 PMCID: PMC8982681 DOI: 10.1007/s41666-020-00071-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 09/25/2018] [Revised: 01/17/2020] [Accepted: 01/27/2020] [Indexed: 01/14/2023]
Abstract
AbstractResearch has shown that cognitive and physical functioning of older adults can be reflected in indicators such as walking speed. While changes in cognition, mobility, or health cause changes in gait speed, often gradual variations in walking speed go undetected until severe problems arise. Discrete clinical assessments during clinical consultations often fail to detect changes in day-to-day walking speeds and do not reflect walking speeds in everyday environments, where most of the mobility issues happen. In this paper, we compare four walking speed measurement technologies to a GAITRite mat (gold standard): (1) an ultra wideband radar (covering the band from 3.3 GHz to 10 GHz), (2) a narrow band 24-GHz radar (with a bandwidth of 250 MHz), (3) a perception Neuron Motion Tracking suit, and (4) a thermal camera. Data were collected in parallel using all sensors at the same time for 10 healthy adults for normal and slow walking paces. A comparison of the sensors indicates better performance at lower gait speeds, with offsets (when compared to GAITRite) between 0.1 and 20% for the ultra wideband radar, 1.9 and 17% for the narrowband radar, 0.1 and 38% for the thermal camera, and 1.7 and 38% for the suit. This paper supports the potential of unobtrusive radar-based sensors and thermal camera technologies for ambient autonomous gait speed monitoring for contextual, privacy-preserving monitoring of participants in the community.
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Affiliation(s)
- P. P. Morita
- School of Public Health and Health Systems, University of Waterloo, Waterloo, ON Canada
- Centre for Global eHealth Innovation, Techna Institute, University Health Network, Toronto, ON Canada
- Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, ON Canada
- Research Institute for Aging, Waterloo, ON Canada
| | - A. S. Rocha
- School of Public Health and Health Systems, University of Waterloo, Waterloo, ON Canada
- Goiano Federal Institute, Trindade, GO Brazil
| | - G. Shaker
- Research Institute for Aging, Waterloo, ON Canada
- Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON Canada
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON Canada
- Waterloo Artificial Intelligence Institute, Waterloo, ON Canada
| | - D. Lee
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON Canada
| | - J. Wei
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - B. Fong
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON Canada
| | - A. Thatte
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - A. Karimi
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - L. Xu
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - A. Ma
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - A. Wong
- Research Institute for Aging, Waterloo, ON Canada
- Waterloo Artificial Intelligence Institute, Waterloo, ON Canada
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - J. Boger
- Research Institute for Aging, Waterloo, ON Canada
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
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18
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Hao JP, Ma A. The ratio of miR-21/miR-24 as a promising diagnostic and poor prognosis biomarker in colorectal cancer. Eur Rev Med Pharmacol Sci 2020; 22:8649-8656. [PMID: 30575905 DOI: 10.26355/eurrev_201812_16629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Optimal management of cancer treatment will be guided by sensitive and specific biomarkers. Searching for potential biomarkers is always a hot spot in cancer research, including colorectal cancer (CRC). MicroRNAs (miRNAs) have been recently proposed as biomarkers for cancers. PATIENTS AND METHODS Based on previous miRNA analysis in our hospital and data mining, we hypothesized that the ratio of miR-21/miR-24 (miR-21/24) may serve as plasma biomarkers in CRC patients. The plasma levels of miR-21 and miR-24 were analyzed from the 186 CRC patients before surgery and 97 healthy controls by qRT-PCR. Receiver operating characteristic (ROC) analysis was further used to evaluate the difference in diagnostic accuracy associated with the expression of miR-21, miR-24 and their ratio. Chi-square2-test or Fisher's exact test was performed to determine the relationship between the ratio of miR-21/24 and clinicopathological parameters. Kaplan-Meier and log-rank testing were performed to evaluate the effect of miR-21/24 ratio on the survival of colon cancer. Hazard ratios (HRs) and corresponding 95% confidence intervals (CIs) were calculated by Cox regression models. RESULTS ROC curves revealed that the diagnostic accuracy AUC (area under the curve) in CRC tissue of miR-24, miR-21, and the ratio of miR-21/24 were 0.8971, 0.9128 and 0.9875, respectively. Notably, the ratio of miR-21/24, with the best accuracy among these miRNAs, was significantly correlated with several important prognosis factors in CRC, such as tumor size, TNM stage, lymph metastasis and histologic differentiation (all p<0.05). By Kaplan-Meier survival analysis and Cox regression analysis, the ratio of miR-21/24 was shown to be a significant survival risk factor for CRC patients. CONCLUSIONS We showed that the plasma ratio of miR-21/24 is a potentially powerful tool for detecting CRC and predicting prognosis.
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Affiliation(s)
- J-P Hao
- Department of Colorectal Surgery, the Second Hospital of Tianjin Medical University, Hexi District, Tianjin, China.
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19
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Ma A, Wong DK, Feld J. A192 GRADE OF ACTIVITY AND FIBROSIS IS SIMILAR IN EAG- AND EAG+ IMMUNE ACTIVE HBV-INFECTED LIVER BIOPSIES. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Ma
- Division of Gastroenterology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - D K Wong
- Medicine, University Health Network University of Toronto, Toronto, ON, Canada
| | - J Feld
- Medicine, University Health Network University of Toronto, Toronto, ON, Canada
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20
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de Almeida TP, van Schie MMCH, Ma A, Tieves F, Younes SHH, Fernández-Fueyo E, Arends IWCE, Riul A, Hollmann F. Efficient Aerobic Oxidation of trans
-2-Hexen-1-ol using the Aryl Alcohol Oxidase from Pleurotus eryngii. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801312] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- T. P. de Almeida
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | | | - A. Ma
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | - F. Tieves
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | - S. H. H. Younes
- Department of Biotechnology; Delft University of Technology, The; Netherlands
- Department of Chemistry, Faculty of Science; Sohag University; Sohag 82524 Egypt
| | - E. Fernández-Fueyo
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | | | - A. Riul
- Department of Applied Physics, “Gleb Wataghin” Institute of Physics (IFGW); University of Campinas (UNICAMP), SP; Brazil
| | - F. Hollmann
- Department of Biotechnology; Delft University of Technology, The; Netherlands
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21
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Ma A, Liu LW. A304 A CASE REPORT ILLUSTRATING THE NATURAL PROGRESSION OF TYPE 3 TO TYPE 2 ACHALASIA. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Ma
- Gastroenterology, University of Toronto, Toronto, ON, Canada
| | - L W Liu
- Medicine, University Health Network, Toronto, ON, Canada
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22
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Lu Q, Bai L, Liu P, Wang Y, Huo J, Yuan Z, Du X, Ma A. Cardiac Rupture Complicating Acute Myocardial Infarction in the Percutaneous Coronary Intervention Era: Clinical Features. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.583] [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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Powderly J, Patel M, Lee J, Brody J, Meric-Bernstam F, Hamilton E, Ponce Aix S, Garcia-Corbacho J, Bang YJ, Ahn MJ, Rha S, Kim KP, Gil Martin M, Wang H, Lazorchak A, Wyant T, Ma A, Agarwal S, Tuck D, Daud A. CA-170, a first in class oral small molecule dual inhibitor of immune checkpoints PD-L1 and VISTA, demonstrates tumor growth inhibition in pre-clinical models and promotes T cell activation in Phase 1 study. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx376.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Luo L, Ning F, Du Y, Song B, Yang D, Salvage SC, Wang Y, Fraser JA, Zhang S, Ma A, Wang T. Calcium-dependent Nedd4-2 upregulation mediates degradation of the cardiac sodium channel Nav1.5: implications for heart failure. Acta Physiol (Oxf) 2017; 221:44-58. [PMID: 28296171 DOI: 10.1111/apha.12872] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/08/2016] [Accepted: 03/03/2017] [Indexed: 12/18/2022]
Abstract
AIM Reductions in voltage-gated sodium channel (Nav1.5) function/expression provide a slowed-conduction substrate for cardiac arrhythmias. Nedd4-2, which is activated by calcium, post-translationally modulates Nav1.5. We aim to investigate whether elevated intracellular calcium ([Ca2+ ]i ) reduces Nav1.5 through Nedd4-2 and its role in heart failure (HF). METHODS Using a combination of biochemical, electrophysiological, cellular and in vivo methods, we tested the effect and mechanism of calcium on Nedd4-2 and in turn Nav1.5. RESULTS Increased [Ca2+ ]i , following 24-h ionomycin treatment, decreased sodium current (INa ) density and Nav1.5 protein without altering its mRNA in both neonatal rat cardiomyocytes (NRCMs) and HEK 293 cells stably expressing Nav1.5. The calcium chelator BAPTA-AM restored the reduced Nav1.5 and INa in NRCMs pre-treated by ionomycin. Nav1.5 was decreased by Nedd4-2 transfection and further decreased by 6-h ionomycin treatment. These effects were not observed in cells transfected with the catalytically inactive mutant, Nedd4-2 C801S, or with Y1977A-Nav1.5 mutant containing the impaired Nedd4-2 binding motif. Furthermore, elevated [Ca2+ ]i increased Nedd4-2, the interaction between Nedd4-2 and Nav1.5, and Nav1.5 ubiquitination. Nav1.5 protein is decreased, whereas Nedd4-2 is increased in volume-overload HF rat hearts, with increased co-localization of Nav1.5 with ubiquitin or Nedd4-2 as indicated by immunofluorescence staining. BAPTA-AM rescued the reduced Nav1.5 protein, INa and increased Nedd4-2 in hypertrophied NRCMs induced by isoproterenol or angiotensin II. CONCLUSION Calcium-mediated increases in Nedd4-2 downregulate Nav1.5 by ubiquitination. Nav1.5 is downregulated and co-localizes with Nedd4-2 and ubiquitin in failing rat heart. These data suggest a role of Nedd4-2 in Nav1.5 downregulation in HF.
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Affiliation(s)
- L. Luo
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - F. Ning
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - Y. Du
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - B. Song
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - D. Yang
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - S. C. Salvage
- Physiological Laboratory; University of Cambridge; Cambridge UK
| | - Y. Wang
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - J. A. Fraser
- Physiological Laboratory; University of Cambridge; Cambridge UK
| | - S. Zhang
- Department of Biomedical and Molecular Sciences; Queen's University; Kingston Ontario Canada
| | - A. Ma
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
- Key Laboratory of Molecular Cardiology; Xi'an Shaanxi Province China
- Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University); Ministry of Education; Xi'an China
| | - T. Wang
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
- Key Laboratory of Molecular Cardiology; Xi'an Shaanxi Province China
- Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University); Ministry of Education; Xi'an China
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Muttusamy T, Ma A, Sinnerbrink I, Quinton AE, Peek MJ, Joung S. Prenatal sonographic features of cranioectodermal dysplasia. Prenat Diagn 2017; 37:628-630. [DOI: 10.1002/pd.5037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/10/2017] [Accepted: 03/14/2017] [Indexed: 11/12/2022]
Affiliation(s)
- T. Muttusamy
- Department of Obstetrics and Gynaecology at Nepean Hospital; New South Wales Australia
| | - A. Ma
- Department of Clinical Genetics; Nepean Hospital; New South Wales Australia
- Disciplines of Genetic Medicine, Child and Adolescent Health, Children's Hospital Westmead Clinical School; Sydney University; New South Wales Australia
| | - I. Sinnerbrink
- Department of Clinical Genetics; Nepean Hospital; New South Wales Australia
| | - A. E. Quinton
- Medical Sonography, School of Health, Medical and Applied Science; Central Queensland University; Australia
| | - M. J. Peek
- Medical School, College of Medicine, Biology and Environment; The Australian National University; Australia
| | - S. Joung
- Department of Obstetrics and Gynaecology at Nepean Hospital; New South Wales Australia
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Song L, Ma A, Dun H, Hu Y, Fujii Y, Kinugasa F, Oshima S, Higashi Y, Daloze P, Chen H. ASP2409, A Next-Generation CTLA4-Ig, Versus Belatacept in Renal Allograft Survival in Cynomolgus Monkeys. Am J Transplant 2017; 17:635-645. [PMID: 27598231 DOI: 10.1111/ajt.14039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 04/24/2016] [Revised: 08/11/2016] [Accepted: 08/30/2016] [Indexed: 01/25/2023]
Abstract
Belatacept is the first costimulatory blockade agent approved for maintenance immunosuppression in kidney transplant recipients. Clinical results have indicated that belatacept is associated with superior renal function and improved metabolic profile; however, higher incidence of acute rejection and posttransplant lymphoproliferative disorder are the shortcomings of this agent. In this study, ASP2409, a new cytotoxic T-lymphocyte associated protein 4-immunoglobulin possessing 14-fold higher in vitro CD86 binding affinity than belatacept, was tested for renal allograft survival in cynomolgus monkeys. ASP2409 monotherapy dose-dependently prolonged renal allograft survival. Low-dose ASP2409 in combination with a subtherapeutic dose of tacrolimus showed much longer median survival time than monotherapy. Similar allograft survival results were observed in regimens based on high-dose ASP2409, belatacept, and therapeutic-dose tacrolimus. The results of renal allograft histopathology with high-dose ASP2409-based regimens were not inferior to the belatacept-based regimen. Moreover, higher frequencies of FoxP3-positive regulatory T cells in renal allografts were observed in ASP2409- and belatacept-based regimens compared with tacrolimus-based regimens. No serious side effects related to ASP2409 administration were found during the study. These data suggest that ASP2409 is a promising candidate for calcineurin inhibitor-sparing or -avoidance regimens.
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Affiliation(s)
- L Song
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - A Ma
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - H Dun
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - Y Hu
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - Y Fujii
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - F Kinugasa
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - S Oshima
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - Y Higashi
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - P Daloze
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - H Chen
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
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27
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Han L, Ma A, Ren N, Sun Y, Shao Y, Qiu J. [The Automatic X-ray Radiological Positions Detection Based on Contour and Gary Feature Matching]. Zhongguo Yi Liao Qi Xie Za Zhi 2016; 40:318-321. [PMID: 29792623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Designed a method that can automatically distinguish the X-ray radiological positions based on image information. UNLABELLED For any selected input clinical X-ray digital images, we extract the image outline in the edge detection method using optimal threshold selection, then process binarization. After compared with the whole body phantom X-ray images, then process gray level similarity traverse detection. UNLABELLED By optimizing the decision, the best matching region of the same input film was obtained, and the imaging part of the patient is determined based on prior knowledge. UNLABELLED The algorithm is fast and has a high degree of robust.
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Gray C, Hildrew A, Lu X, Ma A, McElroy D, Monteith D, O’Gorman E, Shilland E, Woodward G. Recovery and Nonrecovery of Freshwater Food Webs from the Effects of Acidification. ADV ECOL RES 2016. [DOI: 10.1016/bs.aecr.2016.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Studer P, da Silva CG, Revuelta Cervantes JM, Mele A, Csizmadia E, Siracuse JJ, Damrauer SM, Peterson CR, Candinas D, Stroka DM, Ma A, Bhasin M, Ferran C. Significant lethality following liver resection in A20 heterozygous knockout mice uncovers a key role for A20 in liver regeneration. Cell Death Differ 2015; 22:2068-77. [PMID: 25976305 PMCID: PMC4816110 DOI: 10.1038/cdd.2015.52] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 02/24/2015] [Accepted: 03/13/2015] [Indexed: 12/14/2022] Open
Abstract
Hepatic expression of A20, including in hepatocytes, increases in response to injury, inflammation and resection. This increase likely serves a hepatoprotective purpose. The characteristic unfettered liver inflammation and necrosis in A20 knockout mice established physiologic upregulation of A20 as integral to the anti-inflammatory and anti-apoptotic armamentarium of hepatocytes. However, the implication of physiologic upregulation of A20 in modulating hepatocytes' proliferative responses following liver resection remains controversial. To resolve the impact of A20 on hepatocyte proliferation and the liver's regenerative capacity, we examined whether decreased A20 expression, as in A20 heterozygous knockout mice, affects outcome following two-third partial hepatectomy. A20 heterozygous mice do not demonstrate a striking liver phenotype, indicating that their A20 expression levels are still sufficient to contain inflammation and cell death at baseline. However, usually benign partial hepatectomy provoked a staggering lethality (>40%) in these mice, uncovering an unsuspected phenotype. Heightened lethality in A20 heterozygous mice following partial hepatectomy resulted from impaired hepatocyte proliferation due to heightened levels of cyclin-dependent kinase inhibitor, p21, and deficient upregulation of cyclins D1, E and A, in the context of worsened liver steatosis. A20 heterozygous knockout minimally affected baseline liver transcriptome, mostly circadian rhythm genes. Nevertheless, this caused differential expression of >1000 genes post hepatectomy, hindering lipid metabolism, bile acid biosynthesis, insulin signaling and cell cycle, all critical cellular processes for liver regeneration. These results demonstrate that mere reduction of A20 levels causes worse outcome post hepatectomy than full knockout of bona fide liver pro-regenerative players such as IL-6, clearly ascertaining A20's primordial role in enabling liver regeneration. Clinical implications of these data are of utmost importance as they caution safety of extensive hepatectomy for donation or tumor in carriers of A20/TNFAIP3 single nucleotide polymorphisms alleles that decrease A20 expression or function, and prompt the development of A20-based liver pro-regenerative therapies.
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Affiliation(s)
- P Studer
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Visceral Surgery and Medicine, University Hospital Bern, Bern, Switzerland
| | - C G da Silva
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - J M Revuelta Cervantes
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - A Mele
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - E Csizmadia
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - J J Siracuse
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - S M Damrauer
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - C R Peterson
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - D Candinas
- Department of Visceral Surgery and Medicine, University Hospital Bern, Bern, Switzerland
| | - D M Stroka
- Department of Visceral Surgery and Medicine, University Hospital Bern, Bern, Switzerland
| | - A Ma
- Division of Interdisciplinary Medicine and Biotechnology, Bioinformatics core, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - M Bhasin
- Division of Gastroenterology, Department of Medicine, University of California in San Francisco, San Fransisco, CA, USA
| | - C Ferran
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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Dong Y, Huang J, Li G, Li L, Li W, Li X, Liu X, Liu Z, Lu Y, Ma A, Sun H, Wang H, Wen X, Xu D, Yang J, Zhang J, Zhao H, Zhou J, Zhu L, Committee Members:, Bai L, Cao K, Chen M, Chen M, Dai G, Ding W, Dong W, Fang Q, Fang W, Fu X, Gao W, Gao R, Ge J, Ge Z, Gu F, Guo Y, Han H, Hu D, Huang W, Huang L, Huang C, Huang D, Huo Y, Jin W, Ke Y, Lei H, Li X, Li Y, Li D, Li G, Li X, Li Z, Liang Y, Liao Y, Liu G, Ma A, Ma C, Ma D, Ma Y, Shen L, Sun J, Sun C, Sun Y, Tang Q, Wan Z, Wang H, Wang J, Wang S, Wang D, Wang G, Wang J, Wu Y, Wu P, Wu S, Wu X, Wu Z, Yang J, Yang T, Yang X, Yang Y, Yang Z, Ye P, Yu B, Yuan F, Zhang S, Zhang Y, Zhang R, Zhang Y, Zhang Y, Zhao S, Zhou X. Guidelines for the prevention, diagnosis, and treatment of infective endocarditis in adults: The Task Force for the Prevention, Diagnosis, and Treatment of Infective Endocarditis in Adults of Chinese Society of Cardiology of Chinese Medical Association, and of the Editorial Board of Chinese Journal of Cardiology. Eur Heart J Suppl 2015. [DOI: 10.1093/eurheartj/suv031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Ma A, Wang Y, Zhang Q. Tormentic acid reduces inflammation in BV-2 microglia by activating the liver X receptor alpha. Neuroscience 2014; 287:9-14. [PMID: 25497374 DOI: 10.1016/j.neuroscience.2014.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 09/12/2014] [Revised: 12/03/2014] [Accepted: 12/03/2014] [Indexed: 01/18/2023]
Abstract
Tormentic acid (TA) has been reported to have anticancer, anti-inflammatory and anti-atherogenic properties. However, the effects of TA on neuroinflammation have not been reported. In this study, we investigated whether TA inhibited lipopolysaccharide (LPS)-induced inflammatory response in BV2 microglia cells. BV2 microglia cells were treated with TA for 1h before exposure to LPS. The expression of inducible nitric oxide synthase (iNOS), Cyclooxygenase-2 (COX-2), Nuclear factor κB (NF-κB) and liver X receptor alpha (LXRα) was detected by western blotting. The expression of cytokines Tumor necrosis factor-alpha (TNF-α) and interleukin 1beta (IL-1β) was detected by enzyme-linked immunosorbent assays (ELISA). Results showed that TA inhibited nitric oxide (NO), prostaglandin E2 (PGE2) production by inhibiting iNOS and COX-2 expression. TA also inhibited LPS-induced inflammatory cytokines TNF-α and IL-1β expression. Furthermore, TA could activate LXRα and inhibit LPS-induced NF-κB activation. Knowdown of LXRα reversed the anti-inflammatory effects of TA. In conclusion, our results indicate that TA exerts an anti-inflammatory effect on LPS-stimulated BV2 microglia cells by activating LXRα.
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Affiliation(s)
- A Ma
- Department of Neurology, He Bei Provincial Chest Hospital, Shi Jiazhuang 050000, China
| | - Y Wang
- Department of Nephrology, He Bei Provincial Chest Hospital, Shi Jiazhuang 050000, China
| | - Q Zhang
- Department of Neurology, He Bei Provincial Chest Hospital, Shi Jiazhuang 050000, China.
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Buckner TW, Nielsen BI, Key NS, Ma A. Factor VIII inhibitory antibody in a patient with combined factor V/factor VIII deficiency. Haemophilia 2014; 21:e77-80. [PMID: 25472918 DOI: 10.1111/hae.12557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2014] [Indexed: 01/23/2023]
Affiliation(s)
- T W Buckner
- Harold R. Roberts Comprehensive Hemophilia and Thrombosis Center, University of North Carolina, Chapel Hill, NC, USA
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Pocoski J, Ma A, Kessler CM, Boklage S, Humphries TJ. Cardiovascular comorbidities are increased in US patients with haemophilia A: a retrospective database analysis. Haemophilia 2013; 20:472-8. [DOI: 10.1111/hae.12339] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2013] [Indexed: 01/14/2023]
Affiliation(s)
- J. Pocoski
- Global Health Economics and Outcomes Research; Bayer HealthCare; Whippany NJ USA
| | - A. Ma
- Department of Medicine, University of North Carolina at Chapel Hill; Chapel Hill NC USA
| | - C. M. Kessler
- Department of Medicine, Georgetown University Medical Center; Washington DC USA
| | - S. Boklage
- Health Economics and Outcomes Research; Otsuka America Pharmaceutical, Inc. Princeton; NJ USA
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Lim MY, Nielsen B, Ma A, Key NS. Clinical features and management of haemophilic pseudotumours: a single US centre experience over a 30-year period. Haemophilia 2013; 20:e58-62. [DOI: 10.1111/hae.12295] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2013] [Indexed: 11/30/2022]
Affiliation(s)
- M. Y. Lim
- Division of Hematology/Oncology; Department of Medicine; University of Chapel Hill; Chapel Hill NC USA
| | - B. Nielsen
- UNC Hemophilia and Thrombosis Center; Chapel Hill NC USA
| | - A. Ma
- Division of Hematology/Oncology; Department of Medicine; University of Chapel Hill; Chapel Hill NC USA
- UNC Hemophilia and Thrombosis Center; Chapel Hill NC USA
| | - N. S. Key
- Division of Hematology/Oncology; Department of Medicine; University of Chapel Hill; Chapel Hill NC USA
- UNC Hemophilia and Thrombosis Center; Chapel Hill NC USA
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Nocturne G, Boudaoud S, Miceli Richard C, Viengchareun S, Lazure T, Nititham J, Taylor KE, Criswell LA, Ma A, Busato F, Melki J, Dubost JJ, Hachulla E, Gottenberg JE, Lombes M, Tost J, Mariette X. OP0023 Germinal and Somatic Genetic Variants of TNFAIP3 Promote Lymphomagenesis Process Complicating Primary Sjögren’s Syndrome. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.228] [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: 11/04/2022]
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Garg A, Ahmed M, Childs E, Ma A, Gaffen S. P069 Inhibition of IL-17 receptor signal transduction. Cytokine 2012. [DOI: 10.1016/j.cyto.2012.06.155] [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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Teki R, Kadaksham AJ, House M, Harris-Jones J, Ma A, Babu SV, Hariprasad A, Dumas P, Jenkins R, Provine J, Richmann A, Stowers J, Meyers S, Dietze U, Kusumoto T, Yatsui T, Ohtsu M, Goodwin F. Alternative smoothing techniques to mitigate EUV substrate defectivity. ACTA ACUST UNITED AC 2012. [DOI: 10.1117/12.916497] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Ma A, Patil S, Lund G, Lund K, Shreffler W. Antigen-induced Anergy In Human Basophils Is Not Antigen Specific. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.590] [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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Ma A. 2.036 CEREBRAL GLUCOSE METABOLISM IN PROGRESSIVE SUPRANUCLEAR PALSY. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70469-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ma A, Reid J, Ness A, O'Donnell M, Yellowless D, Boyd K, Murray SA, Denvir M. Evaluation of the Palliative Care Outcome Scale (POS) in chronic heart failure patients. BMJ Support Palliat Care 2011. [DOI: 10.1136/bmjspcare-2011-000020.48] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Chen L, Zhou Z, Shen M, Ma A. Simultaneous Determination and Pharmacokinetic Study of Metformin and Rosiglitazone in Human Plasma by HPLC-ESI-MS. J Chromatogr Sci 2011; 49:94-100. [DOI: 10.1093/chrsci/49.2.94] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ren Y, Ma A, Li J, Jiang X, Ma Y, Toda A, Hu W. Melting of polymer single crystals studied by dynamic Monte Carlo simulations. Eur Phys J E Soft Matter 2010; 33:189-202. [PMID: 20957404 DOI: 10.1140/epje/i2010-10661-8] [Citation(s) in RCA: 14] [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: 02/23/2010] [Revised: 06/30/2010] [Accepted: 09/27/2010] [Indexed: 05/30/2023]
Abstract
We report dynamic Monte Carlo simulations of lattice polymers melting from a metastable chain-folded lamellar single crystal. The single crystal was raised and then melted in an ultrathin film of polymers wetting on a solid substrate, mimicking the melting observations made by using Atomic Force Microscopy. We observed that the thickness distribution of the single crystal appears quite inhomogeneous and the thickness increases gradually from facetted edges to the center. Therefore, at low melting temperatures, melting stops at a certain crystal thickness, and melting-recrystallization occurs when allowing crystal thickening; at intermediate temperatures, melting maintains the crystal shape and exhibits different speeds in two stages; at high temperatures, fast melting makes a melting hole in the thinnest region, as well as a saw-tooth-like pattern at the crystal edges. In addition, the linear melting rates at low temperatures align on the curve extrapolated from the linear crystal growth rates. The temperature dependence of the melting rates exhibits a regime transition similar to crystal growth. Such kinetic symmetry persists in the melting rates with variable frictional barriers for c -slip diffusion in the crystal as well as with variable chain lengths. Visual inspections revealed highly frequent reversals upon melting of single chains at the wedge-shaped lateral front of the lamellar crystal. We concluded that the melting kinetics is dominated by the reverse process of intramolecular secondary crystal nucleation of polymers.
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Affiliation(s)
- Y Ren
- Department of Polymer Science and Engineering, Nanjing University, China
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Li G, Ma A, Shi W, Zhong XH. Quercetin protects hamster spermatogenic cells from oxidative damage induced by diethylstilboestrol. Andrologia 2010; 42:285-90. [DOI: 10.1111/j.1439-0272.2009.00990.x] [Citation(s) in RCA: 14] [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: 11/27/2022] Open
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Abstract
Offshore construction and supply projects involve complex contractual arrangements regulating the relationships of operators, contractors, subcontractors and suppliers. Although every effort is made to prevent the occurrence of disputes when parties enter into contract, it is a fact of life that disputes do arise. This paper explains the role of engineers in the dispute resolution process. It highlights the features of disputes which arise out of the offshore construction and supply industry by way of inclusion of a description of: the life cycle of a typical offshore development; a typical engineering, procurement, construction, installation and commissioning project; the engineer’s involvement in the contractual process; types of frequently occurring disputes; and the role of engineers in dispute avoidance. By way of introducing the various methods of disputes resolution, including litigation, arbitration, adjudication, expert determination, mediation, the engineers’ functions in these processes are highlighted.’The paper concludes that engineers are indeed important if not crucial to every stage of an oil and gas construction project. They have every opportunity to assist in dispute avoidance by being more aware of the contractual relationship between various parties and the project procedure. They can be factual witnesses to set out the chain of events that happened, expert witnesses to assist the court or tribunal in understanding the technical issues, and they are also well placed to judge the rights and wrongs of the parties given their technical backgrounds in understanding the day-to-day running of a project.
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Affiliation(s)
- A. Ma
- Maxwell Alves Solicitors London, UK
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46
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Drummond ND, López Ríos P, Ma A, Trail JR, Spink GG, Towler MD, Needs RJ. Erratum: “Quantum Monte Carlo study of the Ne atom and the Ne+ ion” [J. Chem. Phys. 124, 224104 (2006)]. J Chem Phys 2009. [DOI: 10.1063/1.3245405] [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: 11/14/2022] Open
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47
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Zhang Y, Wang T, Ma A, Zhou X, Gui J, Wan H, Shi R, Huang C, Grace AA, Huang CLH, Trump D, Zhang H, Zimmer T, Lei M. Correlations between clinical and physiological consequences of the novel mutation R878C in a highly conserved pore residue in the cardiac Na+ channel. Acta Physiol (Oxf) 2008; 194:311-23. [PMID: 18616619 PMCID: PMC2659387 DOI: 10.1111/j.1748-1716.2008.01883.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aim: We compared the clinical and physiological consequences of the novel mutation R878C in a highly conserved pore residue in domain II (S5-S6) of human, hNav1.5, cardiac Na+ channels. Methods: Full clinical evaluation of pedigree members through three generations of a Chinese family combined with SCN5A sequencing from genomic DNA was compared with patch and voltage-clamp results from two independent expression systems. Results: The four mutation carriers showed bradycardia, and slowed sino-atrial, atrioventricular and intraventricular conduction. Two also showed sick sinus syndrome; two had ST elevation in leads V1 and V2. Unlike WT-hNav1.5, whole-cell patch-clamped HEK293 cells expressing R878C-hNav1.5 showed no detectable Na+ currents (iNa), even with substitution of a similarly charged lysine residue. Voltage-clamped Xenopus oocytes injected with either 0.04 or 1.5 μg μL−1 R878C-hNav1.5 cRNA similarly showed no iNa, yet WT-hNav1.5 cRNA diluted to 0.0004–0.0008 ng μL−1resulted in expression of detectable iNa. iNa was simply determined by the amount of injected WT-hNav1.5: doubling the dose of WT-hNav1.5 cRNA doubled iNa. iNa amplitudes and activation and inactivation characteristics were similar irrespective of whether WT-hNav1.5 cRNA was given alone or combined with equal doses of R878C-hNav1.5 cRNA therefore excluding dominant negative phenotypic effects. Na+ channel function in HEK293 cells transfected with R878C-hNav1.5 was not restored by exposure to mexiletine (200 μm) and lidocaine (100 μm). Fluorescence confocal microscopy using E3-Nav1.5 antibody demonstrated persistent membrane expression of both WT and R878C-hNav1.5. Modelling studies confirmed that such iNa reductions reproduced the SSS phenotype. Conclusion: Clinical consequences of the novel R878C mutation correlate with results of physiological studies.
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Affiliation(s)
- Y Zhang
- Cardiovascular Ion Channel Disease Laboratory, Department of Paediatrics, First Affiliated Hospital, Medical College of Xi'an Jiaotong University, Xi'an, China
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48
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Feng J, Zhang M, Zheng S, Xie P, Ma A. Effects of High Temperature on Multiple Parameters of Broilers In Vitro and In Vivo. Poult Sci 2008; 87:2133-9. [DOI: 10.3382/ps.2007-00358] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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49
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Ma A, Awotwi-Pratt J, Alghamdi A, Alfuraih A, Spyrou NM. Monte Carlo study of photoneutron production in the Varian Clinac 2100C linac. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-0419-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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50
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Tarantino M, Ma A, Aledort L. Safety of human plasma-derived clotting factor products and their role in haemostasis in patients with haemophilia: meeting report. Haemophilia 2007; 13:663-9. [PMID: 17880460 DOI: 10.1111/j.1365-2516.2007.01481.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- M Tarantino
- Comprehensive Bleeding Disorders Center, 5019 N. Executive Drive, Peoria, IL, USA.
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