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Weng YJ, Kwan KJS, Chen DB, Hu BL, Jiang J, Min L, Ai Q, Chen WC, Huang ZH. Subcutaneous implantation of nodular goiter after transoral endoscopic thyroidectomy vestibular approach: A case study and review of literature. Head Neck 2024; 46:E61-E66. [PMID: 38469981 DOI: 10.1002/hed.27732] [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: 11/07/2023] [Revised: 03/03/2024] [Accepted: 03/04/2024] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND Extrathyroid implantation or dissemination of thyroid tissue secondary to a thyroid procedure is rare. Most of these belonged to thyroid carcinoma with metastatic potential and uncommon for benign pathologies. METHODS We report the case of a 31-year-old female who was identified to have multiple subcutaneous implantation of thyroid tissue 5 years after transoral endoscopic thyroidectomy vestibular approach. A comprehensive literature search on implantation of thyroid tissue secondary to thyroid procedures was performed. RESULTS Accidental tearing of the capsule during previous surgery may lead to the subcutaneous implantation. Through literature review, a total 29 articles with 47 patients were identified. 33.3% were benign lesions, and implantation was mostly secondary to fine needle aspiration biopsy (46.5%). CONCLUSIONS Subcutaneous or port site implantation after endoscopic thyroid surgery may occur in benign thyroid pathologies and therefore, oncologic principles must be strictly followed during surgery regardless of its histopathological nature.
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Affiliation(s)
- Yu-Jing Weng
- Division of Endocrine Surgery, Department of General Surgery, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Kristine J S Kwan
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - De-Biao Chen
- Division of Endocrine Surgery, Department of General Surgery, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Ben-Ling Hu
- Division of Endocrine Surgery, Department of General Surgery, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Jiang Jiang
- Division of Endocrine Surgery, Department of General Surgery, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Lei Min
- Division of Endocrine Surgery, Department of General Surgery, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Qing Ai
- Division of Endocrine Surgery, Department of General Surgery, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Wei-Chun Chen
- Division of Endocrine Surgery, Department of General Surgery, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Zhi-Heng Huang
- Division of Endocrine Surgery, Department of General Surgery, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
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Song L, Zhang Q, Min L, Guo X, Gao W, Cui L, Zhang CY. Electrochemiluminescence enhanced by isolating ACQphores in imine-linked covalent organic framework for organophosphorus pesticide assay. Talanta 2024; 266:124964. [PMID: 37481885 DOI: 10.1016/j.talanta.2023.124964] [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: 05/09/2023] [Revised: 07/04/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023]
Abstract
Most of covalent organic frameworks (COFs) are non or weakly emissive due to either the molecular thermal motion-mediated energy dissipation or the aggregation-caused quenching (ACQ) effect. Herein, we synthesize an imine-linked COF (TFPPy-TPh-COF) with high electrochemiluminescence (ECL) emission and the capability of eliminating the ACQ effect and further construct an ECL sensor for malathion detection. The imine-linked COF is obtained by the condensation reaction of (1,1':3',1″-terphenyl)-4,4″-diamine (TPh) and 1,3,6,8-tetrakis(p-formylphenyl)pyrene (TFPPy), and it has higher ECL efficiency than TFPPy aggregates due to the separation of ACQ luminophores (i.e., TFPPy) from each other by TPh and the restriction of intramolecular motions of TFPPy and TPh to reduce the nonradiative decay. The efficient quenching of ECL is achieved by electrochemiluminescence resonance energy transfer (ERET) from the excited state of the TFPPy-TPh-COF to zeolite imidazolate framework-8 (ZIF-8) and the steric hindrance of ZIF-8. Acetylcholinesterase (AChE) can enzymatically hydrolyze acetylcholine (ACh) to generate acetic acid. The resultant acetic acid can trigger the dissolution of ZIF-8 to produce an enhanced ECL signal. Malathion as an organophosphorus pesticide serves as an AChE inhibitor to prevent the production of acetic acid, inducing the decrease of ECL signal. This sensor displays a limit of detection (LOD) of 2.44 pg/mL and a wide dynamic detection range of 0.01-1000 ng/mL. Furthermore, it can be used to detect other organophosphates pesticides (e.g., methidathion, chlorpyrifos, and paraoxon) and measure malathion in real samples (i.e., pakchoi, lettuce, and apples).
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Affiliation(s)
- Linlin Song
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China
| | - Qian Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China
| | - Lei Min
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China
| | - Xinyu Guo
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China
| | - Wenqiang Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Lin Cui
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China.
| | - Chun-Yang Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
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Min L, Wu A, Fan X, Li F, Li J. Dim and Small Target Detection with a Combined New Norm and Self-Attention Mechanism of Low-Rank Sparse Inversion. Sensors (Basel) 2023; 23:7240. [PMID: 37631776 PMCID: PMC10458551 DOI: 10.3390/s23167240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023]
Abstract
Methods for detecting small infrared targets in complex scenes are widely utilized across various domains. Traditional methods have drawbacks such as a poor clutter suppression ability and a high number of edge residuals in the detection results in complex scenes. To address these issues, we propose a method based on a joint new norm and self-attention mechanism of low-rank sparse inversion. Firstly, we propose a new tensor nuclear norm based on linear transformation, which globally constrains the low-rank characteristics of the image background and makes full use of the structural information among tensor slices to better approximate the rank of the non-convex tensor, thus achieving effective background suppression. Secondly, we construct a self-attention mechanism in order to constrain the sparse characteristics of the target, which further eliminates any edge residuals in the detection results by transforming the local feature information into a weight matrix to further constrain the target component. Finally, we use the alternating direction multiplier method to decompose the newly reconstructed objective function and introduce a reweighted strategy to accelerate the convergence speed of the model. The average values of the three evaluation metrics, SSIM, BSF, and SNR, for the algorithm proposed in this paper are 0.9997, 467.23, and 11.72, respectively. Meanwhile, the proposed detection method obtains a higher detection rate compared with other algorithms under the same false alarm rate.
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Affiliation(s)
- Lei Min
- Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China; (L.M.); (F.L.)
- Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China
| | - Anqing Wu
- School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China; (A.W.); (J.L.)
| | - Xiangsuo Fan
- School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China; (A.W.); (J.L.)
- Guangxi Collaborative Innovation Centre for Earthmoving Machinery, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Feng Li
- Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China; (L.M.); (F.L.)
- Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China
| | - Juliu Li
- School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China; (A.W.); (J.L.)
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Mullins CF, Fuccaro M, Pang D, Min L, Andreou AP, Lambru G. A single infusion of intravenous lidocaine for primary headaches and trigeminal neuralgia: a retrospective analysis. Front Neurol 2023; 14:1202426. [PMID: 37638187 PMCID: PMC10448809 DOI: 10.3389/fneur.2023.1202426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 07/28/2023] [Indexed: 08/29/2023] Open
Abstract
Introduction Intravenous (IV) lidocaine has been used as a transitional treatment in headache and facial pain conditions, typically as an inpatient infusion over several days, which is costly and may increase the risk of adverse effects. Here we report on our experience using a single one-hour IV lidocaine infusion in an outpatient day-case setting for the management of refractory primary headache disorders with facial pain and trigeminal neuralgia. Methods This is a retrospective, single-center analysis on patients with medically refractory headache with facial pain and trigeminal neuralgia who were treated with IV lidocaine between March 2018 and July 2022. Lidocaine 5 mg.kg-1 in 60 mL saline was administered over 1 h, followed by an observation period of 30 min. Patients were considered responders if they reported reduction in pain intensity and/or headache frequency of 50% or greater. Duration of response was defined as short-term (< 2 weeks), medium-term (2-4 weeks) and long-term (> 4 weeks). Results Forty infusions were administered to 15 patients with trigeminal autonomic cephalalgias (n = 9), chronic migraine (n = 3) and trigeminal neuralgia (n = 3). Twelve patients were considered responders (80%), eight of whom were complete responders (100% pain freedom). The average duration of the treatment effect for each participant was 9.5 weeks (range 1-22 weeks). Six out of 15 patients reported mild and self-limiting side effects (40%). Conclusion A single infusion of IV lidocaine might be an effective and safe transitional treatment in refractory headache conditions with facial pain and trigeminal neuralgia. The sustained effect of repeated treatment cycles in some patients may suggest a role as long-term preventive therapy in some patients.
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Affiliation(s)
- C. F. Mullins
- The Headache and Facial Pain Service, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- Pain Management and Neuromodulation Centre, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - M. Fuccaro
- The Headache and Facial Pain Service, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - D. Pang
- Pain Management and Neuromodulation Centre, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - L. Min
- Pain Management and Neuromodulation Centre, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - A. P. Andreou
- The Headache and Facial Pain Service, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- King’s College London, Institute of Psychiatry, Psychology and Neuroscience, London, United Kingdom
| | - G. Lambru
- The Headache and Facial Pain Service, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- King’s College London, Institute of Psychiatry, Psychology and Neuroscience, London, United Kingdom
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Fan X, Ding W, Qin W, Xiao D, Min L, Yuan H. Fusing Self-Attention and CoordConv to Improve the YOLOv5s Algorithm for Infrared Weak Target Detection. Sensors (Basel) 2023; 23:6755. [PMID: 37571539 PMCID: PMC10422332 DOI: 10.3390/s23156755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023]
Abstract
Convolutional neural networks have achieved good results in target detection in many application scenarios, but convolutional neural networks still face great challenges when facing scenarios with small target sizes and complex background environments. To solve the problem of low accuracy of infrared weak target detection in complex scenes, and considering the real-time requirements of the detection task, we choose the YOLOv5s target detection algorithm for improvement. We add the Bottleneck Transformer structure and CoordConv to the network to optimize the model parameters and improve the performance of the detection network. Meanwhile, a two-dimensional Gaussian distribution is used to describe the importance of pixel points in the target frame, and the normalized Guassian Wasserstein distance (NWD) is used to measure the similarity between the prediction frame and the true frame to characterize the loss function of weak targets, which will help highlight the targets with flat positional deviation transformation and improve the detection accuracy. Finally, through experimental verification, compared with other mainstream detection algorithms, the improved algorithm in this paper significantly improves the target detection accuracy, with the mAP reaching 96.7 percent, which is 2.2 percentage points higher compared with Yolov5s.
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Affiliation(s)
- Xiangsuo Fan
- School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China; (X.F.); (W.Q.); (D.X.); (H.Y.)
- Guangxi Collaborative Innovation Centre for Earthmoving Machinery, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Wentao Ding
- School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China; (X.F.); (W.Q.); (D.X.); (H.Y.)
| | - Wenlin Qin
- School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China; (X.F.); (W.Q.); (D.X.); (H.Y.)
| | - Dachuan Xiao
- School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China; (X.F.); (W.Q.); (D.X.); (H.Y.)
| | - Lei Min
- Institute of Optics and Electronics Chinese Academy of Sciences, Chengdu 610209, China;
| | - Haohao Yuan
- School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China; (X.F.); (W.Q.); (D.X.); (H.Y.)
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Min L, Jiang W, Li Z, Li X, Wei J, Diao J, Bai T, Yan F. [Establishment of an animal model to study the effects of amputation on the cardiovascular system]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2022; 39:991-996. [PMID: 36310488 DOI: 10.7507/1001-5515.202203064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Lower limb amputation is a significant change in body structure. Loss of muscle, blood vessels, and blood leads to a redistribution of blood flow and changes in resistance at the end of blood vessels. In view of the significant increase in the prevalence of cardiovascular disease after lower limb amputation, the mechanism of which is still unclear, this study aims to establish an animal research model that can verify and explore the effects of amputation on cardiovascular system, and provide the experimental basis for subsequent animal experiments when exploring the effect of different amputation levels on the cardiovascular system. SPF New Zealand rabbits were divided into normal group ( n = 6) and amputation group ( n = 6). The amputation group was treated with above-knee amputation. The changes of low-density liptein cholesterol (LDL-C) and total cholesterol (TC) in serum of all the rabbits were monitored regularly after the surgery. The arterial pathological examination was conducted after the experimental rabbits were executed. The results showed that compared with the normal group, serum LDL-C content and TC content in the amputation group were significantly increased ( P<0.05); The blood vessels of the amputated rabbits had pathological changes such as degeneration and necrosis of smooth muscle cells in the middle membrane layer and rupture of elastic fibers. At the abdominal aorta and aortic arch, the elastic fiber area expression percentage (EFEP) of the experimental group was significantly lower than that of the normal group. The results suggest that the cardiovascular system of rabbits has the tendency of decreased arterial elasticity and lipid deposition in blood after amputation, indicating that the animal research model on the effect of amputation on the cardiovascular system has been successfully established, and can provide an experimental platform for further study on the mechanism of the effect of amputation on the cardiovascular system.
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Affiliation(s)
- Lei Min
- Department of Mechanics & Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Wentao Jiang
- Department of Mechanics & Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Zhongyou Li
- Department of Mechanics & Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Xiao Li
- Department of Mechanics & Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Junru Wei
- Department of Mechanics & Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Junjie Diao
- Department of Mechanics & Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Taoping Bai
- Department of Mechanics & Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Fei Yan
- Chongqing University Three Gorges Hospital, Chongqing 404000, P. R. China
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Weng YJ, Hu BL, Jiang J, Min L, Ai Q, Chen DB, Chen WC, Huang ZH. Delayed tracheal rupture following transoral endoscopic thyroidectomy vestibular approach: Case report and review of the literature. Head Neck 2022; 44:E38-E44. [PMID: 36069506 DOI: 10.1002/hed.27180] [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: 04/13/2022] [Revised: 08/10/2022] [Accepted: 08/18/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Although the transoral endoscopic thyroidectomy vestibular approach (TOETVA) has been proven to be a safe procedure for select patients, as it is a novel approach, all associated complications require adequate attention. METHODS We presented a 49-year old woman who underwent TOETVA developed delayed tracheal rupture 1 week after surgery. An extensive search of literature was carried out using PubMed, Embase, and Web of Science for studies reporting tracheal injury following endoscopic thyroidectomy. RESULTS Thirteen cases of endoscopic thyroidectomy were analyzed, including eight cases of TOETVA. Tracheal injury occurred during various procedures, including accidental dissection, surgical needle puncture, Hegar dilation and trocar placement, and thermal injury by the energy device. CONCLUSIONS Tracheal injury following TOETVA is an underreported complication that can be induced by various factors. Thermal injury to the trachea is more likely to cause a delayed rupture. Careful blunt dissection and standardized use of energy devices are suggested.
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Affiliation(s)
- Yu-Jing Weng
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Ben-Ling Hu
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Jiang Jiang
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Lei Min
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Qing Ai
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, China
| | - De-Biao Chen
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Wei-Chun Chen
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Zhi-Heng Huang
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, China
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Wang R, Singaraju A, Marks KE, Shakib L, Dunlap G, Cunningham-Bussel A, Greisen SR, Chen L, Tirpack A, Fein M, Todd D, Macfarlane L, Goodman S, Dicarlo E, Massarotti E, Sparks J, Hamnvik OP, Min L, Jonsson AH, Brenner M, Chan KK, Bass A, Donlin L, Rao D. POS0402 CLONALLY EXPANDED CD38hi CYTOTOXIC CD8 T CELLS DEFINE THE T CELL INFILTRATE IN CHECKPOINT INHIBITOR-ASSOCIATED ARTHRITIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundImmune checkpoint inhibitor (ICI) therapies that promote T cell activation have improved outcomes for advanced malignancies yet can also elicit harmful autoimmune reactions. The T cell mechanisms mediating these iatrogenic autoimmune events remain unclear.ObjectivesTo investigate the immunophenotype, transcriptomic feature and clonotypes of T cells from joints of patients affected by ICI-induced inflammatory arthritis (ICI-arthritis).MethodsDetailed immunophenotyping was performed on mononuclear cells from synovial fluid (SF) using mass cytometry and flow cytometry to identify significantly altered populations in ICI-A compared to seropositive rhrumatoid arthritis (RA) and psoriatic arthritis (PsA) (p<0.05). Bulk RNA-seq was performed on altered SF CD8 T cell subsets from ICI-A, RA and PsA to investigate their transcriptomic features. Cytokine profile and pathways enriched in ICI-A CD8 T cells were examined using differentially expressed genes, intracellular staining, and in vitro culture. TCR clonotypes were examined using single cell RNA-seq of T cells from synovial fluid, tissue and blood of ICI-A.ResultsCompared to the autoimmune arthritides RA and PsA, ICI-arthritis joints contained an expanded CD38hi CD127- CD8+ T cell subset that displays cytotoxic, effector, and interferon (IFN) response signatures. Exposure of synovial T cells to Type I IFN, more so than IFN-γ, induced the CD38hi cytotoxic phenotype. Single cell transcriptomic and T cell repertoire (TCR) analyses indicated that the abundance of CD38hi CD8 T cells in ICI-arthritis resulted from proliferation of a limited number of clones. The CD38hi population appeared distinct from dysfunctional T cells and clonally most related to TCF7+ memory populations. Comparison of synovial tissue from bilateral knees of the same patient demonstrated considerable sharing of TCR clonotypes among CD38hi CD8 T cells between the two joints. Further, TCR clonotypes expanded in synovial fluid of ICI-arthritis patients were detected in circulating T cells, and circulating CD38hi CD8 T cells are also expanded in ICI-arthritis patients.ConclusionThese results define a distinct CD8 T cell subset in the synovial fluid and in the circulation of patients with ICI-A that may be directly activated by ICI therapy to mediate a tissue-specific autoimmune response.Disclosure of InterestsNone declared.
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Wei J, Li Z, Diao J, Li X, Min L, Jiang W, Yan F. [Effect of lower limb amputation level on aortic hemodynamics: a numerical study]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2022; 39:67-74. [PMID: 35231967 DOI: 10.7507/1001-5515.202108031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
It has been found that the incidence of cardiovascular disease in patients with lower limb amputation is significantly higher than that in normal individuals, but the relationship between lower limb amputation and the episodes of cardiovascular disease has not been studied from the perspective of hemodynamics. In this paper, numerical simulation was used to study the effects of amputation on aortic hemodynamics by changing peripheral impedance and capacitance. The final results showed that after amputation, the aortic blood pressure increased, the time averaged wall shear stress of the infrarenal abdominal aorta decreased and the oscillatory shear index of the left and right sides was asymmetrically distributed, while the time averaged wall shear stress of the iliac artery decreased and the oscillatory shear index increased. The changes above were more significant with the increase of amputation level, which will result in a higher incidence of atherosclerosis and abdominal aortic aneurysm. These findings preliminarily revealed the influence of lower limb amputation on the occurrence of cardiovascular diseases, and provided theoretical guidance for the design of rehabilitation training and the optimization of cardiovascular diseases treatment.
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Affiliation(s)
- Junru Wei
- Biomechanical Engineering Laboratory, Sichuan University, Chengdu 610065, P. R. China
- Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, Chengdu 610065, P. R. China
| | - Zhongyou Li
- Biomechanical Engineering Laboratory, Sichuan University, Chengdu 610065, P. R. China
- Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, Chengdu 610065, P. R. China
| | - Junjie Diao
- Biomechanical Engineering Laboratory, Sichuan University, Chengdu 610065, P. R. China
- Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, Chengdu 610065, P. R. China
| | - Xiao Li
- Biomechanical Engineering Laboratory, Sichuan University, Chengdu 610065, P. R. China
- Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, Chengdu 610065, P. R. China
| | - Lei Min
- Biomechanical Engineering Laboratory, Sichuan University, Chengdu 610065, P. R. China
- Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, Chengdu 610065, P. R. China
| | - Wentao Jiang
- Biomechanical Engineering Laboratory, Sichuan University, Chengdu 610065, P. R. China
- Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, Chengdu 610065, P. R. China
| | - Fei Yan
- Chongqing University Three Gorges Hospital, Chongqing 404000, P. R. China
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Weng YJ, Jiang J, Min L, Ai Q, Chen DB, Chen WC, Huang ZH. Intraoperative near-infrared autofluorescence imaging for hypocalcemia risk reduction after total thyroidectomy: Evidence from a meta-analysis. Head Neck 2021; 43:2523-2533. [PMID: 33949716 DOI: 10.1002/hed.26733] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/30/2021] [Accepted: 04/22/2021] [Indexed: 12/11/2022] Open
Abstract
This meta-analysis evaluates whether near-infrared autofluorescence (NIRAF) imaging reduces the risk of hypocalcemia after total thyroidectomy. A systematic literature search in PubMed, EMBASE, Web of Science, and Cochrane Library for studies from June 2011 to January 2021 comparing total thyroidectomy with NIRAF and conventional surgery (naked eye). Six eligible studies involving 2180 patients were included. The prevalence of transient hypocalcemia was 8.11% (40/493) and 25.19% (425/1687) in the NIRAF and naked eye groups (p < 0.0001), respectively. The prevalence of permanent hypocalcemia was 0% (0/493) and 2.19% (37/1687) in the NIRAF and naked eye groups (p = 0.05), respectively. NIRAF reduces the risk of transient hypocalcemia and may possibly lower the rate of permanent hypocalcemia. Nonetheless, further studies are needed to verify our results and evaluate the cost-effectiveness of NIRAF in real-world clinical practice.
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Affiliation(s)
- Yu-Jing Weng
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Jiang Jiang
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Lei Min
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Qing Ai
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, People's Republic of China
| | - De-Biao Chen
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Wei-Chun Chen
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Zhi-Heng Huang
- Department of Surgery, The University of Hong Kong Shenzhen Hospital, Shenzhen, Guangdong, People's Republic of China
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Zhang ZM, Min L, Jiang DL, Han ZY, Wang LH. Insulin-Like Growth Factor Binding Protein 5: an Important Regulator of Early Osteogenic Differentiation of hMSCs. Folia Biol (Praha) 2021; 67:118-125. [PMID: 35151245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Insulin-like growth factor binding protein 5 (IGFBP5) is broadly bioactive, but its role in osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hMSCs) remains to be clarified. Here, we demonstrated that IGFBP5 expression was markedly increased during the early osteogenic differentiation of hMSCs. We then over-expressed and knocked down this gene in hMSCs and evaluated the impact of manipulation of IGFBP5 expression on osteogenic differentiation based upon functional assays, ALP staining, and expression of osteogenic markers. Together, these analyses revealed that IGFBP5 over-expression enhanced early osteogenic differentiation, as evidenced by increased ALP staining and osteogenic marker induction, whereas knocking down this gene impaired the osteogenic process. Over-expression of IGFBP5 also markedly bolstered the extracellular signal-regulated kinase 1/2 (ERK1/2) phosphorylation level, while IGFBP5 knockdown suppressed this signalling activity. We additionally compared the impact of simultaneous IGFBP5 overexpression and ERK1/2 inhibitor treatment to the effect of IGFBP5 over-expression alone in these hMSCs, revealing that small molecule-mediated EKR1/2 inhibition was sufficient to impair osteogenic differentiation in the context of elevated IGFBP5 levels. These findings indicated that IGFBP5 drives the early osteogenic differentiation of hMSCs via the ERK1/2 signalling pathway. Our results offer value as a foundation for future efforts to study and treat serious bone-related diseases including osteoporosis.
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Affiliation(s)
- Z M Zhang
- Department of Critical Care Medicine, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - L Min
- Department of Critical Care Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - D L Jiang
- Department of Clinical laboratory, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Z Y Han
- Department of Clinical laboratory, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - L H Wang
- Department of Clinical laboratory, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, Hubei, China
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12
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Wu J, Min L, Shengwei K, Pei W, Jie L, Bin T, Orlandini L, Fan W. Lung SBRT Using Helical Tomotherapy: Dosimetric and Delivery Comparison of Dynamic Jaw and Fixed Jaw. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.621] [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: 11/29/2022]
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13
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Zhang YN, Xu RS, Min L, Ruan D, Kim HY, Hong YG, Chen W, Wang S, Xia WG, Luo X, Xie CY, Shang XG, Zheng CT. Effects of ${\rm \small L}$-methionine on growth performance, carcass quality, feather traits, and small intestinal morphology of Pekin ducks compared with conventional ${\rm \small {DL}}$-methionine. Poult Sci 2020; 98:6866-6872. [PMID: 31350999 PMCID: PMC8913982 DOI: 10.3382/ps/pez438] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 07/16/2019] [Indexed: 01/28/2023] Open
Abstract
The research studied the effects ofl-methionine (l-Met) on growth performance, carcass quality, feather traits, and small intestinal morphology of Pekin ducks compared with conventionaldl-methionine (dl-Met). A total of 1080, 1-day-old male Pekin ducks were randomly allotted to 9 groups with 6 replicate pens of 20 birds each. During the starter phase (1 to 14 d), ducks were fed a basal diet (Met, 0.30%) or that supplemented with dl-Met or l-Met at 0.05, 0.10, 0.15, or 0.20% of feed. During the grower phase (15 to 35 d), ducks were fed a basal diet (Met, 0.24%) or that supplemented with dl- Met or l-Met at 0.04, 0.08, 0.12, or 0.16% of feed. Compared with ducks fed the basal diet, supplementation with either dl- Met or l-Met increased the body weight (BW) of ducks at days 14 and 35, increased average daily gain (ADG) and average daily feed intake (ADFI), decreased F:G at the starter phase, and increased ADG over the whole 35-d period (P < 0.05). The efficacy of l-Met compared to dl- Met was 140.1% for 14-d BW, 137.6% for ADG and 121.0% for F:G for days 1 to 14. Ducks fed diets supplemented with l-Met had greater proportion of leg muscle, higher than in ducks provided with dl- Met (P < 0.05). The breast muscle proportion was enhanced with dl- Met rather than l- Met supplementation (P < 0.01). The back feathers score and fourth primary wing feather length were increased with dl- Met or l-Met supplementation (P < 0.01), and there was increased efficacy of l-Met relative to dl- Met for back feathers score (153.1%). Dietary dl- Met or l- Met supplementation increased villus height of ileal mucosa of ducks at days 14 and 35 (P < 0.01). Overall, dietary l-Met or dl- Met supplementation affected the growth performance of ducks during the starter phase, and improved the feather traits and small intestinal morphology. The efficacy of l-Met to dl- Met ranged from 120 to 140% for growth performance of young ducks (1 to 14 d) and was 153% for the feather traits of ducks (35 d).
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Affiliation(s)
- Y N Zhang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou, China 510640
| | - R S Xu
- Institute of Life Science and Engineering, Foshan University, Foshan 528200, China
| | - L Min
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou, China 510640
| | - D Ruan
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou, China 510640
| | - H Y Kim
- CJ CheilJedang Research Institute of Biotechnology, Suwon 16495, South Korea
| | - Y G Hong
- CJ CheilJedang Research Institute of Biotechnology, Suwon 16495, South Korea
| | - W Chen
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou, China 510640
| | - S Wang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou, China 510640
| | - W G Xia
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou, China 510640
| | - X Luo
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou, China 510640
| | - C Y Xie
- CJ International Trading CO., LTD, Shanghai, China 201105
| | - X G Shang
- Institute of Life Science and Engineering, Foshan University, Foshan 528200, China
| | - C T Zheng
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou, China 510640
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Chen L, Zheng Y, Min L, Wang Y, Dong S, Chen S. Infrarenal Para-Aortic Lymphadenectomy via Laparoendoscopic Single-Site Approach. J Minim Invasive Gynecol 2019. [DOI: 10.1016/j.jmig.2019.09.013] [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: 11/29/2022]
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15
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Polenick CA, Min L, Kales HC. MEDICAL COMORBIDITIES AMONG PERSONS WITH DEMENTIA: LINKS TO CAREGIVERS’ EMOTIONAL CAREGIVING DIFFICULTIES. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C A Polenick
- University of Michigan, Ann Arbor, Michigan, United States
| | - L Min
- University of Michigan, Ann Arbor, MI
| | - H C Kales
- University of Michigan, Ann Arbor, MI
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Tu C, Zhou Y, Yao K, Luo Y, Zhang W, Duan H, Min L. Basket trial in advanced cancers: A clinical observation of apatinib in lung metastases and non-lung metastases. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.027] [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: 11/12/2022] Open
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17
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Ren T, Ying P, Cai G, Li X, Han Z, Min L, Cui J. Improvement of thermoelectric performance of copper-deficient compounds Cu2.5+δIn4.5Te8 (δ = 0–0.15) due to a degenerate impurity band and ultralow lattice thermal conductivity. RSC Adv 2018; 8:27163-27170. [PMID: 35539978 PMCID: PMC9083297 DOI: 10.1039/c8ra05188g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 06/17/2018] [Accepted: 07/21/2018] [Indexed: 11/21/2022] Open
Abstract
Cu–In–Te ternary chalcogenides have unique crystal and band structures; hence they have received much attention in thermoelectrics. In this work we have observed an enhancement in Hall carrier concentration (nH) and ultralow lattice thermal conductivity (κL) when Cu was added to ternary Cu2.5+δIn4.5Te8 (δ = 0–0.15) compounds. The enhancement in nH is attributed to a degenerate impurity band at the G point in the valence band maximum (VBM), while the extremely low κL results from the increased lattice disorder. We thus obtained the minimum κL value of only 0.23 W K−1 m−1 in the sample at δ = 0.1 and 820 K, which is in good agreement with the calculation using the Callaway model. The highest thermoelectric figure of merit ZT is 0.84 for the material at δ = 0.1, which is about 0.38 higher than that of the pristine Cu2.5In4.5Te8. Improvement of thermoelectric performance of copper-deficient compounds Cu2.5+δIn4.5Te8 (δ = 0–0.15) due to degenerate impurity band (IB) and ultralow lattice thermal conductivity.![]()
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Affiliation(s)
- Ting Ren
- Materials Science and Engineering College
- China University of Mining and Technology
- Xuzhou 221116
- China
- School of Materials & Chemical Engineering
| | - Pengzhan Ying
- Materials Science and Engineering College
- China University of Mining and Technology
- Xuzhou 221116
- China
| | - Gemei Cai
- School of Materials Science and Engineering
- Central South University
- Changsha 410083
- China
| | - Xiaoyan Li
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Zhongkang Han
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Lei Min
- Materials Science and Engineering College
- China University of Mining and Technology
- Xuzhou 221116
- China
- School of Materials & Chemical Engineering
| | - Jiaolin Cui
- School of Materials & Chemical Engineering
- Ningbo University of Technology
- Ningbo 315016
- China
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18
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Chen C, Chi H, Min L, Junhua Z. Downregulation of guanine nucleotide-binding protein beta 1 (GNB1) is associated with worsened prognosis of clearcell renal cell carcinoma and is related to VEGF signaling pathway. J BUON 2017; 22:1441-1446. [PMID: 29332336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
PURPOSE Clear-cell renal cell carcinoma (ccRCC) is characterized by genetic abnormalities, while the role of Guanine Nucleotide-Binding Protein Beta 1 (GNB1) in ccRCC has not been studied. We thus aimed to evaluate the expression and prognostic value of GNB1 in ccRCC. METHODS A two-stage study (exploration and validation) was conducted using in silico and immunohistochemical (IHC) scoring of ccRCC samples from our institute, to evaluate the association between GNB1 expression and clinicopathological parameters of ccRCC patients. Pathway analyses were performed for genes coexpressed with GNB1 using the KOBAS platform to profile the function of GNB1 and IHC validation. RESULTS In the exploration stage, data from TCGA ccRCC dataset were reproduced, which contained 537 patients with ccRCC and found that downregulation of GNB1 was significantly associated with worse prognosis. IHC staining from the Human Protein Atlas showed significantly downregulation of GNB1 in ccRCC tissue compared with normal kidney. Pathway analysis showed significantly altered vascular endothelial growth factor (VEGF) signaling pathways among which expressions of 3 genes (WASF2, NRP1, and HIP1) were significantly associated with GNB1 expression, respectively. In the validation stage, included were 80 ccRCC samples and GNB1 expression was scored using IHC positivity. GNB1 expression was negatively associated with tumor stage, lymph node invasion, metastasis, older age, and increased tumor grade. Female gender and receiving neoadjuvant therapy were also associated with decreased GNB1 expression. The expressions of WASF2, NRP1 and HIP1 were also studied and found that they were significantly associated with GNB1. CONCLUSION GNB1 was downregulated in ccRCC. Decreased GNB1 expression was associated with worsened disease characteristics and prognosis. GNB1 was related with VEGF signaling in ccRCC, implying a therapeutic potential of this factor.
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Affiliation(s)
- C Chen
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, 200072, China
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Tu C, Tang F, Zhou Y, Min L, Luo Y, Zhang W, Shi R, Duan H. Response to apatinib in advanced alveolar soft part sarcoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx387.030] [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: 11/13/2022] Open
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20
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Zheng N, Li S, Zhang H, Min L, Gao Y, Wang J. A survey of aflatoxin M1 of raw cow milk in China during the four seasons from 2013 to 2015. Food Control 2017. [DOI: 10.1016/j.foodcont.2017.02.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Min L, Ha J, Park P, Cherry-Bukowiec J. BRIEF PRE-INJURY FUNCTIONAL STATUS MEASURE PREDICTS TWO-YEAR DECLINE AND DEATH AFTER GERIATRIC TRAUMA. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- L. Min
- University of Michigan, Department of Internal Medicine, Division of Geriatric and Palliative Medicine, Ann Arbor, Michigan,
- VA Ann Arbor Healthcare System and the Geriatric Research Education Clinical Center (GRECC), Ann Arbor, Michigan,
| | - J. Ha
- University of Michigan, Department of Internal Medicine, Division of Geriatric and Palliative Medicine, Ann Arbor, Michigan,
| | - P. Park
- University of Michigan, Department of Surgery, Ann Arbor, Michigan
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Pollock Y, Chan C, Hall K, Englesbe M, Diehl K, Min L. PREOPERATIVE ASSESSMENT IN OLDER CANCER PATIENTS: EVALUATION OF A NEW TOOL. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y. Pollock
- University of Michigan, Ann Arbor, Michigan
| | - C. Chan
- University of Michigan, Ann Arbor, Michigan
| | - K.E. Hall
- University of Michigan, Ann Arbor, Michigan
| | | | - K. Diehl
- University of Michigan, Ann Arbor, Michigan
| | - L. Min
- University of Michigan, Ann Arbor, Michigan
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Min L, Hall K, Finlayson E, Englesbe M, Palazzolo W, Hou H, Miller A, Diehl K. THE VESPA PRE-OPERATIVE TOOL: A SCALE THAT PREDICTS POST-SURGICAL GENERAL AND GERIATRIC COMPLICATIONS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- L. Min
- University of Michigan, Department of Internal Medicine, Division of Geriatric and Palliative Medicine, Ann Arbor, Michigan,
- VA Ann Arbor Healthcare System and the Geriatric Research Education Clinical Center (GRECC), Ann Arbor, Michigan,
| | - K. Hall
- University of Michigan, Department of Internal Medicine, Division of Geriatric and Palliative Medicine, Ann Arbor, Michigan,
- VA Ann Arbor Healthcare System and the Geriatric Research Education Clinical Center (GRECC), Ann Arbor, Michigan,
| | - E. Finlayson
- University of California, San Francisco, San Francisco, California,
| | - M. Englesbe
- University of Michigan, Departments of Surgery, Ann Arbor, Michigan,
| | - W. Palazzolo
- University of Michigan, Departments of Surgery, Ann Arbor, Michigan,
| | - H. Hou
- University of Michigan, Urology, Ann Arbor, Michigan,
| | - A. Miller
- Massachusetts Eye and Ear Infirmary / Harvard Combined Otolaryngology, Boston, Massachusetts
| | - K. Diehl
- University of Michigan, Departments of Surgery, Ann Arbor, Michigan,
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Nakamura R, Pham A, Gendzekhadze K, Min L, Pullarkat V, Al Malki M, O Donnell M, Cao T, Stein A, Khaled S, Ali H, Senitzer D, Michelle Afkhami M, Aoun P, Murata-Collins J, Forman S, Palmer J, Marcucci G, Pillai R, Aldoss I. Therapy-Related Myelodysplasia: Somatic Mutations and Allogeneic Hematopoietic Cell Transplantation Outcomes. Leuk Res 2017. [DOI: 10.1016/s0145-2126(17)30176-5] [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: 11/29/2022]
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25
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Min L, Zhao Y, Xing J, Zhang S. Letter: NICE referral criteria for lower gastrointestinal alarm features - not ideal but not poor either. Aliment Pharmacol Ther 2017; 45:1175. [PMID: 28326582 DOI: 10.1111/apt.13989] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- L Min
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - Y Zhao
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - J Xing
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - S Zhang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
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Zhao J, Shu P, Duan F, Wang X, Min L, Shen Z, Ruan Y, Qin J, Sun Y, Qin X. Loss of OLFM4 promotes tumor migration through inducing interleukin-8 expression and predicts lymph node metastasis in early gastric cancer. Oncogenesis 2016; 5:e234. [PMID: 27294866 PMCID: PMC4945743 DOI: 10.1038/oncsis.2016.42] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 01/15/2016] [Accepted: 05/11/2016] [Indexed: 12/26/2022] Open
Abstract
Endoscopic surgery is increasingly used for early gastric cancer (EGC) treatment worldwide, and lymph node metastasis remains the most important risk factor for endoscopic surgery in EGC patients. Olfactomedin 4 (OLFM4) is mainly expressed in the digestive system and upregulated in several types of tumors. However, the role of OLFM4 in EGC has not been explored. We evaluated OLFM4 expression by immunohistochemical staining in 105 patients with EGC who underwent gastrectomy. The clinicopathological factors and OLFM4 expression were co-analyzed to predict lymph node metastasis in EGC. The metastatic mechanism of OLFM4 in gastric cancer was also investigated. We found that OLFM4 was upregulated in EGC tumor sections, and relatively low expression of OLFM4 was observed in patients with lymph node metastasis. OLFM4 expression as well as tumor size and differentiation were identified as independent factors, which could be co-analyzed to generate a better model for predicting lymph node metastasis in EGC patients. In vitro studies revealed that knockdown of OLFM4 promoted the migration of gastric cancer cells through activating the NF-κB/interleukin-8 axis. Negative correlation between OLFM4 and interleukin-8 expression was also observed in EGC tumor samples. Our study implies that OLFM4 expression is a potential predictor of lymph node metastasis in EGC, and combing OLFM4 with tumor size and differentiation could better stratify EGC patients with different risks of lymph node metastasis.
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Affiliation(s)
- J Zhao
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - P Shu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - F Duan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - X Wang
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - L Min
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Z Shen
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Y Ruan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - J Qin
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Y Sun
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - X Qin
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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Fan YC, Min L, Chen H, Liu YL. Alternative splicing isoform of T cell factor 4K suppresses the proliferation and metastasis of non-small cell lung cancer cells. Genet Mol Res 2015; 14:14009-18. [PMID: 26535715 DOI: 10.4238/2015.october.29.20] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Wnt pathway has been implicated in the initiation, progression, and metastasis of lung cancer. T cell factor 4, a member of TCF/LEF family, acts as a transcriptional factor for Wnt pathways in lung cancer. Increasing amounts of evidence have shown that TCF-4 has multiple alternative splicing isoforms with transactivation or transrepression activity toward the Wnt pathway. Here, we found the presence of multiple TCF-4 isoforms in lung cancer cell lines and in normal bronchial epithelial cells. TCF-4K isoform expression was significantly decreased in lung cancer cells compared with normal bronchial epithelial cells and was identified as a transcriptional suppressor of the Wnt pathway in non-small cell lung carcinoma (NSCLC). Overexpression of TCF-4K significantly inhibited the proliferation and migration of NSCLC cells. Collectively, our data indicate that TCF-4K functions as a tumor suppressor in NSCLC by down-regulating the Wnt pathway.
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Affiliation(s)
- Y C Fan
- The Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - L Min
- The Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - H Chen
- The Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Y L Liu
- The Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Yang Z, Liu Z, Liu S, Min L, Meng W. Adaptive multi-view selection for semi-supervised emotion recognition of posts in online student community. Neurocomputing 2014. [DOI: 10.1016/j.neucom.2014.05.055] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Min L, Sarkar N, Guang M, Yudong G, Kaili Z, Dong T. Can surface EMG be adequately described by digital sampling? Nonlinear Dynamics Psychol Life Sci 2014; 18:229-249. [PMID: 24894263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Surface electromyography (SEMG) is a common tool to evaluate muscle function in kinesiological studies, musculoskeletal rehabilitation, prosthetics, clinical research and neurological disease diagnosis. The acquisition of SEMG is a crucially basic issue to gain an insight into musculoskeletal system function. The aim of this study is to investigate if the sampled surface EMG signals can reflect adequately the neural activity of the underlying musculature. The surface EMG signals of four muscles (abductor pollicis muscles and abductor digiti minimi muscles of right hand and left hand) are studied on the amplitude, frequency and nonlinear measure based on symplectic geometry. There are obvious differences in nonlinear measures of the different sampled signals, although there are little significant changes in their amplitude and frequency measures. Meanwhile, surface EMG signals obviously differ from their surrogate data at higher sampling frequencies. The results indicate that surface EMG signals contain nonlinear components. To gather the sufficient information of surface EMG signal, the data acquisition should be required at the higher sampling frequency. Furthermore, the nonlinear measure based on symplectic geometry can be used as a sensitive index for evaluation of the activity of the human muscles.
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Affiliation(s)
- Lei Min
- Shanghai Jiao Tong University, China; Vanderbilt University, Nashville, TN
| | | | | | - Gu Yudong
- Hua Shan Hospital, Fudan University, China
| | | | - Tian Dong
- Hua Shan Hospital, Fudan University, China
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Ren C, Shi R, Min L, Zhang W, Tu C, Duan H, Zhang B, Xiong Y. Experience of Interstitial Permanent I125 Brachytherapy for Extremity Soft Tissue Sarcomas. Clin Oncol (R Coll Radiol) 2014; 26:230-5. [DOI: 10.1016/j.clon.2014.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 10/31/2013] [Accepted: 12/03/2013] [Indexed: 11/24/2022]
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Tian YS, Rong TZ, Hong YL, Min L, Jian PG. Pharmacological postconditioning with diazoxide attenuates ischemia/reperfusion-induced injury in rat liver. Exp Ther Med 2013; 5:1169-1173. [PMID: 23596486 PMCID: PMC3627466 DOI: 10.3892/etm.2013.941] [Citation(s) in RCA: 10] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 10/11/2012] [Indexed: 11/25/2022] Open
Abstract
It has been demonstrated that ischemic postconditioning (IPO) is capable of attenuating ischemia/reperfusion (I/R) injury in the heart. However, the novel role of pharmacological postconditioning in the liver remains unclear. In this study, the hypothesis that diazoxide postconditioning reduces I/R-induced injury in rat liver was tested. Rats were assigned randomly to the sham-operated control, I/R (occlusion of the porta hepatis for 60 min, followed by a persistent reperfusion for 120 min), diazoxide ischemic postconditioning (DIPO; occlusion of the porta hepatis for 60 min, then treatment with diazoxide for 10 min reperfusion, followed by a persistent reperfusion for 110 min) or 5-hydroxydecanoate (5-HD)+DIPO (occlusion of the porta hepatis for 60 min, then treatment with diazoxide and 5-HD for 10 min reperfusion, followed by a persistent reperfusion for 110 min) groups. The alanine aminotransferase (ALT) and aspartate transaminase (AST) levels were assayed. The expression levels of protein kinase c-ε (pkc-ε), cytochrome c (cyt-c), caspase-3 and bcl-2 protein were determined by western blotting. The serum levels of ALT and AST and expression levels of cyt-c and caspase-3 were significantly lower in the DIPO group (P<0.05). However, the protein expression levels of pkc-ε and bcl-2 were markedly increased in the DIPO group (P<0.05). 5-HD abrogated the protective effects of DIPO. The data of the present study provide the first evidence that DIPO protects the liver from I/R injury by opening the mitochondrial KATP channels, activating and upregulating pkc-ε and inhibiting the activation of the apoptotic pathway by decreasing the release of cyt-c and the expression of caspase-3 and increasing bcl-2 expression.
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Affiliation(s)
- Y S Tian
- Chongqing Key Laboratory of Hepatobiliary Surgery, Second Affiliated Hospital, Chongqing Medical University, Chongqing, P.R. China
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Abstract
OBJECTIVES To evaluate care provided by primary care physicians in community practice to older patients presenting with cognitive impairment and dementia. DESIGN Secondary analysis of an intervention study. SETTING Primary care clinics. PARTICIPANTS 101 patients 75 years and older enrolled in the ACOVE-2 study who presented with a new cognitive problem, new dementia, or prevalent dementia. MEASUREMENTS Patients assessment and management were evaluated from medical record review and caregiver interviews. RESULTS Among 34 patients presenting with a new cognitive problem, half received a cognitive assessment comprising of a test of memory and one other cognitive task, 41% were screened for depression and 29% were referred to a consultant. Of the 27 patients with newly diagnosed dementia, 15% received the components of a basic neurological examination, one-fifth received basic laboratory testing and for one third the medical record reflected an attempt to classify the type of dementia. Counseling was under-reported in the medical record compared to the caregiver interview for the 101 patients with dementia, but even the interview revealed that about half or fewer patients received counseling about safety and accident prevention, caregiver support or managing conflicts. Less than 10% were referred to a social worker. CONCLUSION This small but detailed evaluation suggests patients presenting with cognitive problems to primary care physicians do not consistently receive basic diagnosis and management.
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Affiliation(s)
- J Belmin
- Department of Geriatrics, Hôpital Charles Foix et Université UPMC-Paris 6, 7 avenue de la République. F-94200 Ivry-sur-Seine, France
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Luo H, Pan Y, Min L, Zhao L, Li J, Leung J, Xue L, Yin Z, Liu X, Liu Z, Sun A, Li C, Wu K, Guo X, Fan D. Transgastric endoscopic gastroenterostomy using a partially covered occluder: a canine feasibility study. Endoscopy 2012; 44:493-8. [PMID: 22531984 DOI: 10.1055/s-0031-1291689] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 12/20/2022]
Abstract
BACKGROUND AND STUDY AIMS The use of natural orifice transluminal endoscopic surgery (NOTES) for gastroenterostomy has been previously reported, but it remains technically challenging and additional assistance is often needed. The aim of this study was to develop and evaluate a novel method for the creation of a gastroenterostomy using NOTES with an occluder. METHODS Transgastric endoscopic gastroenterostomy was performed in 12 healthy female dogs using a therapeutic upper gastrointestinal endoscope and a partially covered occluder. The occluder was removed with a snare 1 week later. The patency of the gastroenterostomy was confirmed by endoscopy, contrast radiological study, necropsy, and histological examination after 2 weeks. RESULTS NOTES gastroenterostomy with an occluder was successful in all 12 dogs. The mean operative time was 32.3 ± 10.3 min (range 20.3 - 53.5). One dog (the first; 8.3 %) died 4 days after the operation of severe intra-abdominal infection due to incorrect deployment of the occluder and poor bowel preparation. Minor bleeding occurred at the anastomosis after removal of the occluder in two of the remaining dogs (18.2 %). Necropsy revealed postoperative adhesions that had developed at the anastomotic site in one dog (9.1 %). No anastomotic leakage or intestinal obstruction was observed. Complete healing of the anastomosis was confirmed on histological evaluation. CONCLUSION Gastroenterostomy performed entirely by NOTES using an occluder was technically feasible in this survival animal model.
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Affiliation(s)
- H Luo
- Department of Gastroenterology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Gang S, Min L, Li L, Guo-Ying L, Lin X, Qun J, Hua Z. Evaluation of CT coronary artery angiography with 320-row detector CT in a high-risk population. Br J Radiol 2011; 85:562-70. [PMID: 21304010 DOI: 10.1259/bjr/90347290] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The aim of this article was to prospectively evaluate the accuracy and radiation dose of 320-detector row dynamic volume CT (DVCT) for the detection of coronary artery disease (CAD) in a high-risk population. METHODS 60 patients with a high risk of CAD underwent DVCT without preceding heart rate control and also underwent invasive coronary angiography (ICA), which served as the standard reference. RESULTS On a per segment analysis, overall sensitivity was 95.3%, specificity was 97.6%, positive predictive value was 90.6%, negative predictive value was 98.8% and Youden index was 0.93. In both heart rate subgroups, diagnostic accuracy for the assessment of coronary artery stenosis was similar. The accuracy of the subgroup with an Agatston score ≥100 was lower than that for patients with an Agatston score <100. However, the difference between DVCT and ICA results was not significant (p=0.08). The mean estimated effective dose of CT was 12.5 ± 9.4 mSv. In those patients with heart rates less than 70 beats per minute (bpm), the mean radiation exposure of DVCT was 5.2 ± 0.9 mSv. The effective radiation dose was significantly lower than that of ICA (14.1 ± 5.9 mSv) (p<0.001). When the heart rate was >70 bpm, a significantly higher dose was delivered to patients with DVCT (22.6 ± 5.2 mSv, p<0.001) than with ICA (15.0 ± 5.3 mSv, p<0.001). CONCLUSION DVCT reliably provides high diagnostic accuracy without heart rate/rhythm control. However, from a dosimetric point of view, it is recommended that heart rate should be controlled to <70 bpm to decrease radiation dose.
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Affiliation(s)
- S Gang
- Department of Medical Imaging, Jinan Military General Hospital, Jinan, Shandong Province, China.
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Kwong W, Neilson AL, Hamilton RM, Chiu CC, Stephenson EA, Gross GJ, Soucie L, Kirsh JA, xian-hui Z, Bao-peng T, Jin-xin L, Yu Z, Yan-yi Z, Jiang-hua Z, Hirahara T, Sugawara Y, Suga C, Ako J, Momomura S, Ardashev AV, Zhelyakov EG, Konev AV, Rybachenko MS, Belenkov YN, Bai R, Di Biase L, Santangeli P, Saenz LC, Verma A, Sanchez J, Tondo C, Natale A, Safari F, Hajizadeh S, Mani A, Khoshbaten A, Foadoddini M, Forush SS, Bayat G, Kim SH, Chong D, Ching CK, Liew R, Galalardin, Khin MW, Teo WS, Chong D, Tan BY, Liew R, Ching CK, Teo WS, Sakamoto T, Al Mehairi M, Al Ghamdi SA, Dagriri K, Al Fagih A, Selvaraj R, Ezhumalai B, Satheesh S, Ajit A, Gobu P, Balachander J, Liu XQ, Zhou X, Yang G, Zhong GZ, Shi L, Tian Y, Li YB, Wang AH, Yang XC, Takenaka S, Ozaki H, Nakamura M, Otsuka M, Tsurumi Y, Nolker G, Gutleben KJ, Ritscher G, Sinha AM, Muntean B, Heintze J, Vogt J, Brachmann J, Horstkotte D, Katsuyuki T, Katsuyuki T, McGrew F, Johnson E, Coppess M, Fan I, Li S, Zhiyu L, Zengzhang L, Xianbin L, Yuehui Y, Min L, Shu-long Z, Dong C, Zhi-tao Z, Xian-jing W, Ying-xue D, Shu-Long Z, Dong C, Zhi-Tao Z, Xian-Jing W, Ying-Xue D, Liu P, Guo JH, Zhang Z, Li J, Liu HG, Zhang HC, Zvereva V, Rillig A, Meyerfeldt U, Jung W, Wei L, Qi G, Zhang Q, Xia Y, Doi A, Satomi K, Nakajima I, Makimoto H, Yokoyama T, Yamada Y, Okamura H, Noda T, Aiba T, Shimizu W, Aihara N, Kamakura S, Li Z, Zhao QY, Huang CX, Doi A, Satomi K, Nakajima I, Makimoto H, Yokoyama T, Yamada Y, Okamura H, Noda T, Aiba T, Shimizu W, Aihara N, Kamakura S, Min-Seok C, Jeong-Wook P, Young-Woong H, Sung-Eun P, Jae-Sun U, Yong-Seog O, Woo-Seung S, Ji-Hoon K, Seong-Won J, Man-Young L, Tae-Ho R, Uhm JS, Oh YS, Choi MS, Park JW, Ha YW, Park SE, Jang SW, Shin WS, Kim JH, Lee MY, Rho TH, Nielsen JB, Olesen MS, Tango M, Haunso S, Holst AG, Svendsen JH, Poci D, Thogersen AM, Riahi S, Linde P, Edvardsson N, Khoo CW, Krishnamoorthy S, Dwivedi G, Balakrishnan B, Lim HS, Lip GYH, Khoo CW, Krishnamoorthy S, Dwivedi G, Balakrishnan B, Lim HS, Lip GYH, D'Ascia S, D'ascia C, Marino V, Chiariello M, Santulli G, Music L, Anderson K, Benzaquen BS, Saponieri C, Yassin H, Fridman V, Vasavada BC, Turitto G, El-Sherif N, Saponieri C, Prabhu H, Yassin H, Fridman V, Huang Y, Vasavada BC, Turitto G, El-Sherif N, Ortega MC, Sosa ESH, Ugalde AN, Al Jamil A, Abu Siddique M, Haque KMHSS, Suga C, Hirahara T, Sugawara Y, Ako J, Momomura SI, Mlynarski R, Mlynarska A, Ilczuk G, Mlynarski R, Mlynarska A, Wilczek J, Mlynarska A, Mlynarski R, Wilczek J, Mlynarska A, Mlynarski R, Wilczek J, Sosnowski M, Kohno R, Abe H, Nagatomo T, Oginosawa Y, Minamiguchi H, Otsuji Y, Kohno R, Abe H, Minamiguchi H, Oginosawa Y, Nagatomo T, Otsuji Y, Minamiguchi H, Abe H, Kohno R, Oginosawa Y, Otsuji Y, Ekinci S, Yesil M, Bayata S, Vurgun VK, Arikan E, Postaci N, Xiaoqing R, Jielin P, Shu Z, Liang M, Fangzheng W, Takahashi K, Tokano T, Nakazato Y, Doi S, Shiozawa T, Konishi H, Hiki M, Kato Y, Komatsu S, Takahashi S, Kubota N, Tamura H, Suwa S, Ohki M, Katsumata T, Kizu K, Bito F, Sumiyoshi M, Juntendo HD, Yamada Y, Okamura H, Nakajima I, Doi A, Makimoto H, Yukoyama T, Noda T, Satomi K, Aiba T, Shimizu W, Aihara N, Kamakura S, Perna F, Leo M, Leccisotti L, Casella M, Pelargonio G, Lago M, Bencardino G, Narducci ML, Russo E, Santangeli P, Giordano A, Bellocci F, Song T, Yang J, Huang C, Zhang J, Huang C, Wu P, Yang J, Song T, Chen Y, Fan X, Wang T, Wang X, Tang Y, Wu P, Huang CX, Zhang J, Fan XR, Chen YJ, Li XW, Yang J, Song T, Chiu CC, Buescher T, Obias-Manno D, Yoo CJ, Huh J, Ortega MC, Nakanishi H, Hirata A, Wada M, Kashiwase K, Okada M, Ueda Y, Su D, Niu XL, Song AQ, Kohno R, Abe H, Minamiguchi H, Oginosawa Y, Nagatomo T, Otsuji Y, Fujii S, Yambe Y, Shiiba K, Sakakibara M, Takenaka S, Watanabe A, Wada T, Koide Y, Ikeda M, Toda H, Hashimoto K, Terasaka R, Nakahama M, Wada T, Watanabe A, Koide Y, Ikeda M, Toda H, Hashimoto K, Terasaka R, Nakahama M, Okada Y, Mizuno H, Ide H, Ueno T, Kogaki S, Ozono K, Nanto S, Statescu C, Bercea R, Sascau RA, Georgescu CA, Ortega MC, Athanas E, Ortega MC, Athanas E, Mironov NY, Bakalov SA, Jarova EA, Rodionova ES, Mironova NA, Kim J, Ahn MS, Han DC, Choo JTL, Chen CK, Tan TH, Ong KK, Kam R, Curnis A, Bontempi L, Coppola G, Cerini M, Vassanelli F, Lipari A, Gennaro F, Pagnoni C, Ashofair N, Cas LD, Gourineni V, Wong KL, Davoudi R, Hamid N, Chong D, Yew TB, Liew R, Keong CC, Siong TW, Fuke E, Shimizu H, Kimura S, Hao K, Watanabe R, Seo JB, Chung WY, Kim SH, Kim MA, Zo ZH, Krishinan S, Skuratova NA, Belyaeva LM, Bae MH, Lee JH, Lee HS, Yang DH, Park HS, Cho Y, Chae SC, Jun JE, Rychkova LV, Dolgikh VV, Zurbanova LV, Zurbanov AV, Aleksanyan A, Matevosyan A, Podosyan G, Zelveian P, Aleksanyan A, Podosyan G, Matevosyan A, Zelveian P, Choi HO, Nam GB, Kim YR, Kim KH, Kim SH, Choi KJ, Kim YH, Pakpahan HAP, Wei D, Qizhu T, Xiaofei Y, Kai G, Siting F, Ji H, Sato A, Tanabe Y, Hayashi Y, Yoshida T, Ito E, Chinushi M, Hasegawa K, Yagihara N, Iijima K, Izumi D, Watanabe H, Furushima H, Aizawa Y, Dong YX, Dong YX, Burnett JC, Chen HH, Sandberg S, Zhang Y, Chen PS, Cha YM, Mlynarski R, Mlynarska A, Wilczek J, Sosnowski M, Zhou XH, Tang BP, Li JX, Zhang Y, Li YD, Zhang JH, Arsenos P, Gatzoulis K, Gialernios T, Dilaveris P, Sideris S, Archontakis S, Tsiachris D, Christodoulos S, Feng Z, Baogui S, Li L, Ming L, Bai R, Di Biase L, Mohanty P, Hesselson AB, De Ruvo E, Gallagher PL, Minati M, Natale LCA, Tomassoni GF, Gan T, Tang B, Xu G, Li J, Zhang Y, Zhou X, Zhang Y, Hosoda J, Ishikawa T, Matsushita K, Matsumoto K, Kimura Y, Miyamoto M, Sugano T, Ishigami T, Uchino K, Kimura K, Umemura S, Nakajima I, Noda T, Shimizu W, Yokoyama T, Makimoto H, Doi A, Yamada Y, Okamura H, Satomi K, Aiba T, Aihara N, Kamakura S, Nakajima I, Noda T, Shimizu W, Kurita T, Yokoyama T, Makimoto H, Doi A, Yamada Y, Okamura H, Satomi K, Aiba T, Aihara N, Kamakura S, Wang T, Huang CX, Wang T, Huang CX, Ruan L, Zhang C, Cai S, Bai R, Liu N, Ruan Y, Quan X, Kang JK, Kim NY, Park SH, Lee JH, Park HS, Cho Y, Chae SC, Jun JE, Park WH, Sapelnikov OV, Latypov RS, Grishin IR, Mareev YV, Saidova MA, Akchurin RS, Arsenos P, Gatzoulis K, Manis G, Dilaveris P, Archontakis S, Tsiachris D, Mytas D, Papafanis T, Papavasileiou MV, Stefanadis C, Ren LN, Fang XH, Wang YQ, Qi GX, Zeng QX, Zheng ZT, Zhong JQ, Wang YL, Liu HZ, Liu DL, Meng XL, Li JS, Zhang Y, Liu HZ, Zhong JQ, Zeng QX, Liu DL, Meng XL, Li JS, Su GY, Wang J, Zhang Y, Liu HZ, Zhong JQ, Zeng QX, Wang YL, Liu DL, Meng XL, Li JS, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Meng XL, Liu DL, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Meng XL, Liu DL, Su GY, Zhang Y, Nicolson WB, Kundu S, Tyagi N, Meatcher PDS, Yusuf S, Jeilan M, Stafford PJ, Sandilands AJ, Loke I, Ng GA, Nicolson WB, Kundu S, Tyagi N, Meatcher PDS, Yusuf S, Jeilan M, Stafford PJ, Sandilands AJ, Loke I, Ng GA, Solak Y, Gul EE, Atalay H, Abdulhalikov T, Kayrak M, Turk S, Kang JK, Kim NY, Park SH, Lee JH, Park HS, Cho Y, Chae SC, Jun JE, Park WH, Belyaeva LM, Skuratova NA, Pogodina AV, Dolgikh VV, Valjavskaja OV, Zurbanov AV, Chen YX, Luo NS, Wang JF, Zhang S, Ishimaru S, Miyakawa M, Kakinoki R, Tadokoro M, Kitani S, Sugaya T, Nishimura K, Igarashi T, Okabayashi H, Furuya J, Igarashi Y, Igarashi K, Su T, Winlaw D, Chard R, Nicholson I, Sholler G, Lau K, Sun Q, Cheng KP, Cheng R, Hua W, Pu JL, Zhang S, Lim CP, Chan LL, Teo LW, Kwok BWK, Sim DKL, Ching CK, Lim CP, Chan LL, Teo LW, Kwok BWK, Sim DKL, Ching CK, Curnis A, Bontempi L, Cerini M, Lipari A, Vassanelli F, Pagnoni C, Ashofair N, Moneghini D, Cestari R, Cas LD, Al Fagih A, Al Shurafa H, Al Ghamdi S, Dagriri K, Al Khadra A, Iijima K, Chinushi M, Hasegawa K, Yagihara N, Sato A, Izumi D, Watanabe H, Furushima H, Aizawa Y, Furushima H, Chinushi M, Iijima K, Izumi D, Hasegawa K, Yagihara N, Watanabe H, Sato A, Aizawa Y, Agacdiken A, Yalug I, Vural A, Celikyurt U, Ural D, Aker T, Agacdiken A, Yalug I, Vural A, Celikyurt U, Ural D, Aker T, Heintze J, Schloss E, Auricchio A, Zeng C, Sterns L, Farooqi F, Kamdar R, Adhya S, Bayne S, Jackson T, Pollock L, Sterns L, Gall N, Murgatroyd F, Guo Y, Wang Y, Yang T, Zhu P, Liu H, Zhao Y, Zhang L, Gao W, Gao M. Poster presentation. Europace 2011. [DOI: 10.1093/europace/euq492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Min L, Xiaona Z, Shaohui M, Ming Z. e0700 The diagnostic value of dual-source CT in patients suspected of coronary artery disease: a meta-analysis. Heart 2010. [DOI: 10.1136/hrt.2010.208967.700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Min L, Yanzong Y, Shulong Z, Lianjun G. e0572 Comparison of pulmonary veins ostium, antrum and left atrial volume in patients with and without paroxysmal atrial fibrillation. Heart 2010. [DOI: 10.1136/hrt.2010.208967.572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
The dissection of the genetic architecture of quantitative traits, including the number and locations of quantitative trait loci (QTL) and their main and epistatic effects, has been an important topic in current QTL mapping. We extend the Bayesian model selection framework for mapping multiple epistatic QTL affecting continuous traits to dynamic traits in experimental crosses. The extension inherits the efficiency of Bayesian model selection and the flexibility of the Legendre polynomial model fitting to the change in genetic and environmental effects with time. We illustrate the proposed method by simultaneously detecting the main and epistatic QTLs for the growth of leaf age in a doubled-haploid population of rice. The behavior and performance of the method are also shown by computer simulation experiments. The results show that our method can more quickly identify interacting QTLs for dynamic traits in the models with many numbers of genetic effects, enhancing our understanding of genetic architecture for dynamic traits. Our proposed method can be treated as a general form of mapping QTL for continuous quantitative traits, being easier to extend to multiple traits and to a single trait with repeat records.
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Affiliation(s)
- L Min
- Department of Animal Science, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, PR China
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Gu J, Yang W, Cheng J, Yang T, Qu Y, Kuang Y, Huang H, Yang L, He W, Min L. Temporal and spatial characteristics and treatment strategies of traumatic brain injury in Wenchuan earthquake. Emerg Med J 2010; 27:216-9. [DOI: 10.1136/emj.2008.065342] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Feurino LW, Zhang Y, Bharadwaj U, Zhang R, Li F, Fisher WE, Brunicardi FC, Chen C, Yao Q, Min L. IL-6 stimulates Th2 type cytokine secretion and upregulates VEGF and NRP-1 expression in pancreatic cancer cells. Cancer Biol Ther 2009; 6:1096-100. [PMID: 17568185 DOI: 10.4161/cbt.6.7.4328] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Although upregulation of interleukin-6 (IL-6) is associated with many solid tumors, its role in pancreatic cancer has not been well elucidated. In this study, we examined the expression of IL-6 in pancreatic cancer cells, and determined the effect of exogenous IL-6 on cytokine secretion, gene expression and signaling in human pancreatic cancer cells. METHODS The mRNA levels of IL-6, VEGF165, neuropilin-1 (NRP-1) and neuropilin-2 (NRP-2) were determined by real-time RT PCR. Phosphorylation of ERK2 in pancreatic cancer cells was determined by using Bio-Plex phosphoprotein assay. The expression of IL-6 and other cytokines in human pancreatic cancer cell lines was determined with Bio-Plex cytokine assay. RESULTS Pancreatic cancer cell lines expressed higher levels of IL-6 than normal human pancreatic ductal epithelium (HPDE) cells. Exogenous IL-6 increased the secretion of multiple Th2 type of cytokines in Panc-1, MIA PaCa-2 and BxPC-3 cells. IL-6 also upregulated the expression of VEGF165, and NRP-1, and both IL-6 and VEGF165 were inducible by hypoxia. In addition, IL-6 activated ERK2 signaling pathways in pancreatic cancer cells. CONCLUSIONS IL-6 may be involved in promoting human pancreatic cancer develop ment by furnishing Th2 type of cytokine environment and upregulating cell proliferation and angiogenesis related genes. Targeting IL-6 might be an effective treatment for pancreatic cancer.
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Affiliation(s)
- Louis W Feurino
- Molecular Surgeon Research Center, Elkins Pancreas Center, Michael E. DeBakey Department of Surgery, Baylor College of Medidcine, Houston, Texas 77030, USA
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Li D, Kong Y, Yu H, Lehtinen A, Huang H, Shen F, Min L, Zhou J, Tang G, Wang Q. The construction of a novel kind of non-viral gene delivery vector based on protein as core backbone. Vox Sang 2008; 94:234-241. [PMID: 18167161 DOI: 10.1111/j.1423-0410.2007.01025.x] [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] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND OBJECTIVES A novel kind of non-viral gene delivery vector based on transferrin (Tf) as the core component was constructed with high transfection efficiency and low toxicity. MATERIALS AND METHODS The synthesis vector of Tf-PEI600 was confirmed by different physicochemical methods, including (1)H nuclear magnetic resonance, gel permeation chromatography, X-ray and thermogravimetric analysis. The cytotoxicity and gene delivery efficiency of the synthesized vector were verified by in vitro experiments. RESULTS The agarose gel electrophoresis assay indicated that the novel copolymer Tf-PEI600 could efficiently condense plasmid DNA and the condensed nanoparticles exhibited a spherical shape. As the weight ratio of Tf-PEI600 to DNA reached 15.0, the particle size (about 200 nm) and the zeta potential (about 20 mV) of the nanoparticles became optimal for gene delivery. The methylthiazolyl tetrazolium (MTT) assay showed the cytotoxicity of Tf-PEI600 to be similar to that of PEI600 and much lower than that of PEI25kDa. In gene-delivery experiments with COS-7 cells and HepG2 cells, the Tf-PEI600 showed about a 30- to 53-fold higher efficiency than PEI600 and nearly equal to that of PEI25kDa. CONCLUSIONS These data suggest that Tf-PEI600, with the advantages of low toxicity and high gene-delivery efficiency, might have great prospects in the practice of gene delivery. The core-shell structure of Tf-PEI600 also provided a novel strategy for the construction of non-viral gene delivery vectors.
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Affiliation(s)
- D Li
- Department of Oncology, Sir Run Run Shaw Hospital affiliated to School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Y Kong
- Institute of Chemical Biology and Pharmaceutical Chemistry, Zhejiang University, Hangzhou 310028, China
| | - H Yu
- Institute of Immunology, Zhejiang University, Hangzhou 310031, China
| | - A Lehtinen
- Department of Chemical Technology, Helsinki University of Technology, FIN-02015 TKK, Finland
| | - H Huang
- Institute of Immunology, Zhejiang University, Hangzhou 310031, China
| | - F Shen
- Institute of Immunology, Zhejiang University, Hangzhou 310031, China
| | - L Min
- Institute of Chemical Biology and Pharmaceutical Chemistry, Zhejiang University, Hangzhou 310028, China
| | - J Zhou
- Institute of Chemical Biology and Pharmaceutical Chemistry, Zhejiang University, Hangzhou 310028, China
| | - G Tang
- Institute of Chemical Biology and Pharmaceutical Chemistry, Zhejiang University, Hangzhou 310028, China
| | - Q Wang
- Institute of Immunology, Zhejiang University, Hangzhou 310031, China
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Min L, Li W. O.092 A mathematical model of dynamics for anti-HBV infection treatment with peginterferon alpha-2a. J Clin Virol 2006. [DOI: 10.1016/s1386-6532(06)80089-2] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Min SJ, Luke B, Min L, Misiunas R, Nugent C, Van de Ven C, Martin D, Gonzalez-Quintero VH, Eardley S, Witter FR, Mauldin JG, Newman RB. Birth weight references for triplets. Am J Obstet Gynecol 2004; 191:809-14. [PMID: 15467546 DOI: 10.1016/j.ajog.2004.01.052] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The purpose of this study was to formulate growth references that reflect triplet fetal and neonatal populations at each gestational age by combining serial ultrasonographic estimates of fetal weights and measured birth weights. STUDY DESIGN This historical cohort study was based on 188 pregnancies of live-born triplets of > or =23 weeks' gestation. Ultrasonographic fetal weight measures were modeled as a function of gestational age for each infant. Linear regression models were used to fit the data, and weight percentiles were generated. RESULTS Well-grown triplets fell substantially below singletons by 30 weeks and twins after 34 weeks. Trichorionic vs monochorionic or dichorionic placentation resulted in 27% higher growth at the 10th %ile, 5% higher growth at the 50th %ile, and 4% higher growth at the 90th %ile by 34 weeks. CONCLUSION The overall pattern of fetal growth for well-grown triplets does not differ from that of singletons and twins until late gestation, confirming that, in utero, well-grown children have similar growth potentials, regardless of plurality.
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Affiliation(s)
- S-J Min
- Division of Health Care Policy and Research, University of Colorado Health Sciences Center, Denver, Colo, USA
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Min L, Deshpande K. Diltiazem overdose haemodynamic response to hyperinsulinaemia-euglycaemia therapy: a case report. CRIT CARE RESUSC 2004; 6:28-30. [PMID: 16563103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2004] [Accepted: 02/20/2004] [Indexed: 05/08/2023]
Abstract
A 59-year-old woman was admitted to the intensive care unit after ingesting 5.76 g of an extended release preparation of diltiazem. The patient was hypotensive and bradycardic and was treated initially with intravenous fluids, adrenaline, noradrenaline, vasopressin and standard insulin doses to maintain the blood glucose levels between 6-10 mmol/L. As the patient remained inotrope dependent the insulin dose was increased to 25 U/hr with an infusion of 50% dextrose to maintain the blood glucose levels between 6-8 mmol/L. Within 30 minutes, the mean arterial pressure increased from 65 mmHg to 80 mmHg and within 60 minutes all vasoactive agents were discontinued. A right heart catheter inserted before the increased dose of insulin revealed that the predominant haemodynamic effect of the hyperinsulinaemia-euglycaemia therapy appeared to be an increase in the peripheral vascular resistance.
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Affiliation(s)
- L Min
- Department of Critical Care Medicine, Flinders Medical Centre, Bedford Park, South Australia
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Luke B, Misiunas R, Min L, Kinoshi T, O'Sullivan M, Witter F, Newman R. 77 The cost of twin pregnancy: Maternal & neonatal factors. Am J Obstet Gynecol 2001. [DOI: 10.1016/s0002-9378(01)80112-5] [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: 10/24/2022]
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Luke B, Min L. 76 Contemporary maternal morbidity with multiple gestation: Risks in the 1990s. Am J Obstet Gynecol 2001. [DOI: 10.1016/s0002-9378(01)80111-3] [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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Li S, Liu X, Min L, Ascoli M. Mutations of the second extracellular loop of the human lutropin receptor emphasize the importance of receptor activation and de-emphasize the importance of receptor phosphorylation in agonist-induced internalization. J Biol Chem 2001; 276:7968-73. [PMID: 11118455 DOI: 10.1074/jbc.m010482200] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Alanine scanning mutagenesis of the second extracellular loop of the human lutropin receptor (hLHR) showed that mutation of most of the residues present in this region either enhance or impair the internalization of agonist. A more complete analysis of four mutants, two that enhanced internalization (F515A and T521A) and two that impaired internalization (S512A and V519A), showed that the two mutants that impaired internalization also show a decrease in the sensitivity for agonist-induced cAMP accumulation, whereas the two mutants that enhanced internalization show an increase in the sensitivity for agonist-induced cAMP accumulation. None of these mutants had an effect on the agonist-induced phosphorylation of the hLHR, however. We conclude that, in contrast to the prevailing view of the relative importance of receptor phosphorylation in the internalization of G protein-coupled receptors, the phosphorylation of the hLHR is less important than the agonist-induced activation of the hLHR in the process of internalization.
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Affiliation(s)
- S Li
- Department of Pharmacology, University of Iowa College of Medicine, Iowa City, Iowa 52242-1109, USA
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Min L, Sim MK, Xu XG. Effects of des-aspartate-angiotensin I on angiotensin II-induced incorporation of phenylalanine and thymidine in cultured rat cardiomyocytes and aortic smooth muscle cells. Regul Pept 2000; 95:93-7. [PMID: 11062338 DOI: 10.1016/s0167-0115(00)00162-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Des-aspartate-angiotensin I, a pharmacologically active nine-amino acid angiotensin peptide, and losartan, an AT(1) angiotensin receptor antagonist, but not angiotensin-(1-7), another active angiotensin peptide, completely attenuated the angiotensin II-induced incorporation of [3H]phenylalanine in cultured rat cardiomyocytes. The attenuation by des-aspartate-angiotensin I but not that of losartan was inhibited by indomethacin. The data support an earlier suggestion that the nonapeptide attenuates cardiac hypertrophy in rats via an indomethacin-sensitive angiotensin AT(1) receptor subtype. In rat aortic smooth muscle cells, both des-aspartate-angiotensin I and angiotensin-(1-7) had no effect on the angiotensin II-induced [3H]phenylalanine incorporation. However, the two peptides significantly attenuated the angiotensin II-induced [3H]thymidine incorporation in the smooth muscle cells. The attenuation by angiotensin-(1-7) but not by des-aspartate-angiotensin I was inhibited by (D-Ala(7))-angiotensin-(1-7), a specific angiotensin-(1-7) antagonist. Des-aspartate-angiotensin I also attenuated FCS-stimulated [3H]thymidine incorporation. This attenuation was inhibited by the peptide angiotensin receptor antagonist, (Sar(1), Ile(8))-angiotensin II, but not by losartan. These data indicate that des-aspartate-angiotensin I and angiotensin-(1-7) do not participate in the process of protein synthesis in vascular smooth muscle cells and that the nonapeptide and heptapeptide act on different non-AT(1) receptors to mediate their anti-hyperplasic action. Although the exact mechanisms of action remain to be elucidated, the findings indicate that des-aspartate-angiotensin I acts as an agonist on angiotensin AT(1) and non-AT(1) receptor subtypes and induces responses that oppose the actions of angiotensin II.
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MESH Headings
- 1-Sarcosine-8-Isoleucine Angiotensin II/pharmacology
- Angiotensin I/analogs & derivatives
- Angiotensin I/pharmacology
- Angiotensin II/pharmacology
- Angiotensin Receptor Antagonists
- Animals
- Animals, Newborn
- Aorta, Thoracic/cytology
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/metabolism
- Cells, Cultured
- DNA/biosynthesis
- Imidazoles/pharmacology
- Indomethacin/pharmacology
- Losartan/pharmacology
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Myocardium/cytology
- Myocardium/metabolism
- Peptide Fragments/pharmacology
- Phenylalanine/metabolism
- Protein Biosynthesis
- Pyridines/pharmacology
- Rats
- Rats, Wistar
- Receptors, Angiotensin/agonists
- Thymidine/metabolism
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Affiliation(s)
- L Min
- Department of Pharmacology, Faculty of Medicine, National University of Singapore, 119260, Singapore, Singapore
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Min L, Ascoli M. Effect of activating and inactivating mutations on the phosphorylation and trafficking of the human lutropin/choriogonadotropin receptor. Mol Endocrinol 2000; 14:1797-810. [PMID: 11075813 DOI: 10.1210/mend.14.11.0555] [Citation(s) in RCA: 43] [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] [Indexed: 11/19/2022] Open
Abstract
The effects of several mutations of the human LH receptor (hLHR) on the phosphorylation, internalization, and turnover of the cell surface receptor were examined. Three gain-of-function mutations associated with Leydig cell hyperplasia (L457R and D578Y) and one associated with Leydig cell adenomas (D578H), one signaling-impaired mutation associated with Leydig cell hypoplasia (I625K), and two laboratory designed signaling-impaired mutations (D405N and Y546F) were used. The signaling-impaired mutations showed a reduction in human CG (hCG)-induced receptor phosphorylation and internalization. Mutation of the phosphorylation sites of these loss-of-function mutants had little or no additional effect on internalization. Cotransfection with G protein-coupled receptor kinase-2 (GRK2) rescued the hCG-induced phosphorylation and internalization of the signaling-impaired mutations but only if the phosphorylation sites were intact. Overexpression of arrestin-3 rescued the rate of internalization regardless of whether or not the phosphorylation sites were intact. Only two of the three constitutively active mutants displayed an increase in basal phosphorylation. Although they all failed to respond to hCG with increased receptor phosphorylation, they all internalized hCG faster than wild-type hLHR (hLHR-wt). Mutation of the phosphorylation sites of these constitutively active mutants lengthened the half-time of internalization of hCG toward that of hLHR-wt. Overexpression of arrestin-3 had little or no effect on the already short half-time of internalization of hCG mediated by these mutants. The data obtained with the signaling-impaired and phosphorylation-deficient mutants of the hLHR support a model whereby receptor phosphorylation and activation play a redundant role in the internalization of hCG. The results obtained with the constitutively active mutants suggest that, when occupied by hCG, these mutants assume a conformation that bypasses many of the steps (i.e. activation, phosphorylation, and/or arrestin binding) involved in internalization.
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Affiliation(s)
- L Min
- Department of Pharmacology, The University of Iowa College of Medicine, Iowa City 52242-1109, USA
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