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Kim YR, Eom JS, Yang JW, Kang J, Treasure J. The Impact of Oxytocin on Food Intake and Emotion Recognition in Patients with Eating Disorders: A Double Blind Single Dose Within-Subject Cross-Over Design. PLoS One 2015; 10:e0137514. [PMID: 26402337 PMCID: PMC4581668 DOI: 10.1371/journal.pone.0137514] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 08/17/2015] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND AND AIM Social difficulties and problems related to eating behaviour are common features of both anorexia nervosa (AN) and bulimia nervosa (BN). The aim of this study was to examine the impact of intranasal oxytocin on consummatory behaviour and emotional recognition in patients with AN and BN in comparison to healthy controls. MATERIALS A total of 102 women, including 35 patients with anorexia nervosa (AN), 34 patients with bulimia nervosa (BN), and 33 healthy university students of comparable age and intelligence, participated in a double-blind, single dose placebo-controlled cross-over study. A single dose of intranasal administration of oxytocin (40 IU) (or a placebo) was followed by an emotional recognition task and an apple juice drink. Food intake was then recorded for 24 hours post-test. RESULTS Oxytocin produced no significant change in appetite in the acute or 24 hours free living settings in healthy controls, whereas there was a decrease in calorie consumption over 24 hours in patients with BN. Oxytocin produced a small increase in emotion recognition sensitivity in healthy controls and in patients with BN, In patients with AN, oxytocin had no effect on emotion recognition sensitivity or on consummatory behaviour. CONCLUSIONS The impact of oxytocin on appetite and social cognition varied between people with AN and BN. A single dose of intranasal oxytocin decreased caloric intake over 24 hours in people with BN. People with BN showed enhanced emotional sensitivity under oxytocin condition similar to healthy controls. Those effects of oxytocin were not found in patients with AN. TRIAL REGISTRATION ClinicalTrials.gov KCT00000716.
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Affiliation(s)
- Youl-Ri Kim
- Department of Neuropsychiatry, Seoul Paik Hospital, Inje University, Seoul, South Korea
- Institute of Eating Disorders and Mental Health, Inje University, Seoul, South Korea
| | - Jin-Sup Eom
- Department of Psychology, Chungbuk National University, Cheongju, South Korea
| | - Jae-Won Yang
- Department of Psychology, The Catholic University of Korea, Bucheon, South Korea
| | - Jiwon Kang
- Institute of Eating Disorders and Mental Health, Inje University, Seoul, South Korea
| | - Janet Treasure
- Section of Eating Disorders, Department of Psychological Medicine, King’s College London, Institute of Psychiatry, London, United Kingdom
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102
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Park JE, Kim HS, Seong JH, Ha SS, Nam SW, Lee HS, Kim JS, Yang JW, Kang T. Knee Synovitis Mimicking a Septic Arthritis. J Rheum Dis 2015. [DOI: 10.4078/jrd.2015.22.1.39] [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: 11/22/2022]
Affiliation(s)
- Jeong-Eun Park
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Hyun-Sik Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jae-Ho Seong
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Sung-Sam Ha
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Seoung-Wan Nam
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Hyang-Sun Lee
- Division of Rheumatology, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jae-Seok Kim
- Division of Nephrology, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jae-Won Yang
- Division of Nephrology, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Taeyoung Kang
- Division of Rheumatology, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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103
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Erdem FA, Salzer I, Chen WQ, Lubec G, Shapiro MS, Boehm S, Yang JW. Phosphorylation of Kv7 Channels Regulates their PIP2 Sensitivity. Biophys J 2015. [DOI: 10.1016/j.bpj.2014.11.1512] [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] Open
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104
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Yang QW, Yin ZJ, Zhou HY, Yang JW, Shi ZB, Ji XQ, Yuan GL, Zhang YP, Yu DL, Jiang M, Li W, Ding XT, Cao HR. Diagnostics for energetic particle studies on the HL-2A tokamak. Rev Sci Instrum 2014; 85:11D857. [PMID: 25430270 DOI: 10.1063/1.4893999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
About 13 kinds of diagnostics for energetic particle physics studied on the HuanLiuqi-2A (commonly referred to as HL-2A) tokamak are described in this paper. Their measurement ranges, resolutions, and arrangement are presented. Three under-construction diagnostics including imaging fast ion D-alpha, scintillator matrix (for hard X-ray detection), and bundle fission chamber are described in detail.
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Affiliation(s)
- Q W Yang
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z J Yin
- Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - H Y Zhou
- Southwestern Institute of Physics, Chengdu 610041, China
| | - J W Yang
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z B Shi
- Southwestern Institute of Physics, Chengdu 610041, China
| | - X Q Ji
- Southwestern Institute of Physics, Chengdu 610041, China
| | - G L Yuan
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Y P Zhang
- Southwestern Institute of Physics, Chengdu 610041, China
| | - D L Yu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - M Jiang
- Southwestern Institute of Physics, Chengdu 610041, China
| | - W Li
- Southwestern Institute of Physics, Chengdu 610041, China
| | - X T Ding
- Southwestern Institute of Physics, Chengdu 610041, China
| | - H R Cao
- Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
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105
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Abstract
Fingertip amputation is a challenging injury to manage. Among various reconstructive procedures, replantation results in superior outcome, but is seldom considered in many institutions. From the identification of vessel ends to reanastomosis of the submillimeter vessels, fingertip's highly specialized anatomy requires technical excellence. By addressing these anatomic challenges, fingertip replantation can be a routine reconstructive option for microvascular surgeons.
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Affiliation(s)
- Jin-Soo Kim
- Department of Plastic and Reconstructive Surgery, Hand and Microsurgery Center, Kwang-Myeong Sung-Ae General Hospital, Gyeong-Gi-Do, Korea
| | - Jae-Won Yang
- Department of Plastic and Reconstructive Surgery, Hand and Microsurgery Center, Kwang-Myeong Sung-Ae General Hospital, Gyeong-Gi-Do, Korea
| | - Dong-Chul Lee
- Department of Plastic and Reconstructive Surgery, Hand and Microsurgery Center, Kwang-Myeong Sung-Ae General Hospital, Gyeong-Gi-Do, Korea
| | - Sae-Hwi Ki
- Department of Plastic Surgery, Inha University School of Medicine, Incheon, Korea
| | - Si-Young Roh
- Department of Plastic and Reconstructive Surgery, Hand and Microsurgery Center, Kwang-Myeong Sung-Ae General Hospital, Gyeong-Gi-Do, Korea
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106
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Yoon KL, Yang JW, Chong SC, Oh KJ. Perceptual Sensitivity and Response Bias in Social Anxiety: An Application of Signal Detection Theory. Cogn Ther Res 2014. [DOI: 10.1007/s10608-014-9619-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [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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107
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Lee JJ, Yi HY, Yang JW, Shin JS, Kwon JH, Kim CW. Characterization of Streptozotocin-induced Diabetic Rats and Pharmacodynamics of Insulin Formulations. Biosci Biotechnol Biochem 2014; 67:2396-401. [PMID: 14646199 DOI: 10.1271/bbb.67.2396] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Morphological and functional changes of rat pancreatic islets caused by administration of streptozotocin (STZ) and the bioavailability of insulin formulations administered to STZ-induced diabetic rats with fasting (12 h) or non-fasting were investigated. Islets isolated from normal rats maintained a good three-dimensional structure and the islet yield was 962.5+/-86.5 islet equivalent number (IEQ, islets converted to an average diameter of 150 microm). In the diabetic group (>500 mg/ml blood glucose), the islet yield was only 44.4+/-8.3 IEQ and the islet was severely damaged. The minimum reduction of blood glucose of each formulation, such as insulin solution, microcrystal, and insulin microcrystal capsule, was shown to be 11.3, 11.0, and 16.3 mg/dl, respectively, at 6 h in fasting with diabetic rats. These results indicated that the administration of insulin formulations to the fasting groups increased the severe hypoglycemic effect of insulin action more than in non-fasting diabetic rats. The diabetic rat with fasting has a regulatory disorder in maintaining the blood glucose level. Accordingly, the validity of pharmacological availability as an optimal modeling of insulin formulations is best in non-fasting STZ-induced diabetic rats.
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Affiliation(s)
- Jae-Jeong Lee
- Graduate School of Life Sciences and Biotechnology, Korea University, Seoul
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108
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Zhang YP, Liu Y, Luo XB, Isobe M, Yuan GL, Liu YQ, Hua Y, Song XY, Yang JW, Li X, Chen W, Li Y, Yan LW, Song XM, Yang QW, Duan XR. Development of the scintillator-based probe for fast-ion losses in the HL-2A tokamak. Rev Sci Instrum 2014; 85:053502. [PMID: 24880364 DOI: 10.1063/1.4872385] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new scintillator-based lost fast-ion probe (SLIP) has been developed and operated in the HL-2A tokamak [L. W. Yan, X. R. Duan, X. T. Ding, J. Q. Dong, Q. W. Yang, Yi Liu, X. L. Zou, D. Q. Liu, W. M. Xuan, L. Y. Chen, J. Rao, X. M. Song, Y. Huang, W. C. Mao, Q. M. Wang, Q. Li, Z. Cao, B. Li, J. Y. Cao, G. J. Lei, J. H. Zhang, X. D. Li, W. Chen, J. Chen, C. H. Cui, Z. Y. Cui, Z. C. Deng, Y. B. Dong, B. B. Feng, Q. D. Gao, X. Y. Han, W. Y. Hong, M. Huang, X. Q. Ji, Z. H. Kang, D. F. Kong, T. Lan, G. S. Li, H. J. Li, Qing Li, W. Li, Y. G. Li, A. D. Liu, Z. T. Liu, C. W. Luo, X. H. Mao, Y. D. Pan, J. F. Peng, Z. B. Shi, S. D. Song, X. Y. Song, H. J. Sun, A. K. Wang, M. X. Wang, Y. Q. Wang, W. W. Xiao, Y. F. Xie, L. H. Yao, D. L. Yu, B. S. Yuan, K. J. Zhao, G. W. Zhong, J. Zhou, J. C. Yan, C. X. Yu, C. H. Pan, Y. Liu, and the HL-2A Team, Nucl. Fusion 51, 094016 (2011)] to measure the losses of neutral beam ions. The design of the probe is based on the concept of the α-particle detectors on Tokamak Fusion Test Reactor (TFTR) using scintillator plates. The probe is capable of traveling across an equatorial plane port and sweeping the aperture angle rotationally with respect to the axis of the probe shaft by two step motors, in order to optimize the radial position and the collimator angle. The energy and the pitch angle of the lost fast ions can be simultaneously measured if the two-dimensional image of scintillation light intensity due to the impact of the lost fast ions is detected. Measurements of the fast-ion losses using the probe have been performed during HL-2A neutral beam injection discharges. The clear experimental evidence of enhanced losses of beam ions during disruptions has been obtained by means of the SLIP system. A detailed description of the probe system and the first experimental results are reported.
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Affiliation(s)
- Y P Zhang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Yi Liu
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - X B Luo
- Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610041, China
| | - M Isobe
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5259, Japan
| | - G L Yuan
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Y Q Liu
- Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610041, China
| | - Y Hua
- Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610041, China
| | - X Y Song
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - J W Yang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - X Li
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - W Chen
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Y Li
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - L W Yan
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - X M Song
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - Q W Yang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
| | - X R Duan
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
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109
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Sung SJ, Yang JW, Lee PR, Kim JG, Ryu MT, Park HM, Lee G, Hwang CC, Kim KS, Kim JS, Chung JW. Spin-induced band modifications of graphene through intercalation of magnetic iron atoms. Nanoscale 2014; 6:3824-3829. [PMID: 24584481 DOI: 10.1039/c3nr04178f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Intercalation of magnetic iron atoms through graphene formed on the SiC(0001) surface is found to induce significant changes in the electronic properties of graphene due mainly to the Fe-induced asymmetries in charge as well as spin distribution. From our synchrotron-based photoelectron spectroscopy data together with ab initio calculations, we observe that the Fe-induced charge asymmetry results in the formation of a quasi-free-standing bilayer graphene while the spin asymmetry drives multiple spin-split bands. We find that Fe adatoms are best intercalated upon annealing at 600 °C, exhibiting split linear π-bands, characteristic of a bilayer graphene, but much diffused. Subsequent changes in the C 1s, Si 2p, and Fe 3p core levels are consistently described in terms of Fe-intercalation. Our calculations together with a spin-dependent tight binding model ascribe the diffuse nature of the π-bands to the multiple spin-split bands originated from the spin-injected carbon atoms residing only in the lower graphene layer.
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Affiliation(s)
- S J Sung
- Department of Physics, Pohang University of Science and Technology, Pohang, Korea.
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110
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Abstract
Comminuted fractures of phalanx are challenging to reduce properly. Commonly, the fragments are distracted by various ligaments as well as flexor and extensor tendons. Splints, skeletal traction, Kirschner wire, plate and screws, and cerclage wires have all been used to manage such fractures. Among these, the cerclage wires are able to effectively contain the distracting forces and maintain a proper concentric reduction of the hollow tube structure of phalangeal bones. The resulting tissue-hardware construct is stable and allows early rehabilitation. Despite the obvious mechanical advantages, cerclage wiring of phalangeal fractures require open incisions. Inevitably, this approach leads to periosteal stripping, upon which the distracting forces exaggerate the displacement of comminuted fragments and the blood supply to the injured bone is compromised. To overcome the disadvantages of open approach, the authors have devised a minimally invasive technique in which the cerclage wire is introduced using a hypodermic needle for fractures of the proximal phalanx and distal phalanx base.
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Affiliation(s)
- Woo Cheol Shim
- Department of Plastic and Reconstuctive Surgery, Hand and Microsurgery Center, Gwangmyeong Sungae General Hospital, Gyeonggi-do, Republic of Korea
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111
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Zhao CF, Liu Y, Ni YL, Yang JW, Hui HD, Sun ZB, Liu SJ. SCIRR39 promotes neurite extension via RhoA in NGF-induced PC12 cells. Dev Neurosci 2013; 35:373-83. [PMID: 24021527 DOI: 10.1159/000350715] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Accepted: 03/17/2013] [Indexed: 11/19/2022] Open
Abstract
SCIRR39 is an identified upregulated gene in rat primary neuron injury and/or regeneration process with roles largely unexplored. Using real-time quantitative PCR, Western blotting and immunofluorescence, SCIRR39 expression was detected in normal PC12 cells and upregulated in differentiated cells. The results of cell proliferation by Cell Counting Kit and cell cycle by flow cytometry indicated that SCIRR39 inhibited cell proliferation and induced the decrease in S phase. Importantly, immunofluorescent and RhoA pull-down assays showed that SCIRR39 strongly affected the neurite extension of NGF-treated PC12 cells through a RhoA-dependent mechanism, but the truncated mutants of SCIRR39 containing a truncation from 141AA to 211AA or from 397AA to 424AA failed to mock the SCIRR39 effect on neurite extension. Moreover, change of SCIRR39 expression in NGF-treated PC12 cells regulated the expression and phosphorylation of Fyn, a regulator of RhoA activity, but not the expression of ROCK II protein. Finally, immunofluorescence and RhoA pull-down assays revealed that obvious inhibition of neurite extension by SCIRR39 shRNA was reversed by RhoA inhibitor C3-transferase. Our results indicated that SCIRR39 increased the neurite extension in NGF-treated PC12 cells via RhoA, suggesting that SCIRR39 contributes to the regeneration of neuron injury by specifically altering the differentiation program.
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Affiliation(s)
- C F Zhao
- State Key Laboratory of Proteomics, Department of Neurobiology, Institute of Basic Medical Sciences, The Academy of Military Medical Sciences, Beijing, PR China
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112
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Cheng Y, Ren X, Gowda ASP, Shan Y, Zhang L, Yuan YS, Patel R, Wu H, Huber-Keener K, Yang JW, Liu D, Spratt TE, Yang JM. Interaction of Sirt3 with OGG1 contributes to repair of mitochondrial DNA and protects from apoptotic cell death under oxidative stress. Cell Death Dis 2013; 4:e731. [PMID: 23868064 PMCID: PMC3730425 DOI: 10.1038/cddis.2013.254] [Citation(s) in RCA: 158] [Impact Index Per Article: 14.4] [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: 03/06/2013] [Revised: 05/20/2013] [Accepted: 06/04/2013] [Indexed: 12/16/2022]
Abstract
Sirtuin 3 (Sirt3), a major mitochondrial NAD(+)-dependent deacetylase, targets various mitochondrial proteins for lysine deacetylation and regulates important cellular functions such as energy metabolism, aging, and stress response. In this study, we identified the human 8-oxoguanine-DNA glycosylase 1 (OGG1), a DNA repair enzyme that excises 7,8-dihydro-8-oxoguanine (8-oxoG) from damaged genome, as a new target protein for Sirt3. We found that Sirt3 physically associated with OGG1 and deacetylated this DNA glycosylase and that deacetylation by Sirt3 prevented the degradation of the OGG1 protein and controlled its incision activity. We further showed that regulation of the acetylation and turnover of OGG1 by Sirt3 played a critical role in repairing mitochondrial DNA (mtDNA) damage, protecting mitochondrial integrity, and preventing apoptotic cell death under oxidative stress. We observed that following ionizing radiation, human tumor cells with silencing of Sirt3 expression exhibited deteriorated oxidative damage of mtDNA, as measured by the accumulation of 8-oxoG and 4977 common deletion, and showed more severe mitochondrial dysfunction and underwent greater apoptosis in comparison with the cells without silencing of Sirt3 expression. The results reported here not only reveal a new function and mechanism for Sirt3 in defending the mitochondrial genome against oxidative damage and protecting from the genotoxic stress-induced apoptotic cell death but also provide evidence supporting a new mtDNA repair pathway.
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Affiliation(s)
- Y Cheng
- Department of Pharmacology, Milton S Hershey Medical Center, Penn State Hershey Cancer Institute, Pennsylvania State University College of Medicine, Hershey, PA 17033-0850, USA.
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113
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Aryal B, Maskey D, Kim MJ, Yang JW, Kim HG. Effect of Ginseng on Calretinin Expression in Mouse Hippocampus Following Exposure to 835 MHz Radiofrequency. J Ginseng Res 2013; 35:138-48. [PMID: 23717055 PMCID: PMC3659519 DOI: 10.5142/jgr.2011.35.2.138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2010] [Revised: 12/23/2010] [Accepted: 02/14/2011] [Indexed: 11/18/2022] Open
Abstract
Exponential rise in the use of mobile communication devices has generated health concerns due to radiofrequency (RF) exposure due to its close proximity to the head. Calcium binding proteins like calretinin regulate the levels of calcium (Ca2+) which plays an important role in biological systems. Ginseng is known for maintaining equilibrium in the human body and may play a beneficial radioprotectant role against electromagnetic field (EMF) exposure. In the present study, we evaluated the radioprotective effects of red ginseng (RG) extract in a mouse model. Calretinin (CR) expression was measured using a free-floating immunohistochemical method in the hippocampus of mice after 835 MHz EMF exposure for 5 h/d for 5 d at specific absorption rate=1.6 W/kg for the different experimental groups. The control animals were treated with NaCl while the experimental animals received 10 mg/kg ginseng, or 30 mg/kg; EMF exposed mice were also treated with NaCl, 10 mg/kg ginseng (E10), or 30 mg/kg (E30). Decreases in CR immunoreactivity (IR) along with loss of CA1 and CA3 interneurons and infragranular cells were observed in the ENaCl group while such losses were not observed in the E10 and E30 groups. CR IR significantly increased in the RG-treated group compared to control and EMF-exposed groups treated with NaCl. The study demonstrates that RG extract can serve as a radioprotective agent that maintains Ca2+ homeostasis and prevents neuronal loss in the brain hippocampal region caused by RF exposure.
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Affiliation(s)
- Bijay Aryal
- Department of Pharmacology, Dankook University College of Medicine, Cheonan 330-714, Korea
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114
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115
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Abstract
Injuries that cause soft tissue defects could threaten the function and viability of the involved digit. Reconstruction of such defects can be challenging and requires careful consideration in restoring both the aesthetic and functional deficit. The purpose of this review is to describe appropriate reconstructive technique using various free tissue transfers. According to the location and the size of a defect, a proper reconstructive option is indicated. Owing to the specialized mechano-sensory property of its volar soft tissue, fingertip injury, when significant defects exist, are reconstructed using specialized free flaps with appropriate histological and functional similarities. Composite tissue including bone may be required in selected cases. Additional procedures, such as secondary skin graft or division of the flap, should be done after several weeks of the first operation. Refinements and improvements in free tissue transfer allow an expanse of reconstructive options for soft tissue defect in the digit.
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Affiliation(s)
- Byung-Joon Jeon
- Department of Plastic and Reconstructive Surgery, Gwang-Myeong Sung-Ae General Hospital, Gyeonggii-do 423-711, Republic of Korea
| | - Jae-Won Yang
- Department of Plastic and Reconstructive Surgery, Gwang-Myeong Sung-Ae General Hospital, Gyeonggii-do 423-711, Republic of Korea
| | - Si Young Roh
- Department of Plastic and Reconstructive Surgery, Gwang-Myeong Sung-Ae General Hospital, Gyeonggii-do 423-711, Republic of Korea
| | - Sae Hwi Ki
- Department of Plastic and Reconstructive Surgery, Gwang-Myeong Sung-Ae General Hospital, Gyeonggii-do 423-711, Republic of Korea
| | - Dong Chul Lee
- Department of Plastic and Reconstructive Surgery, Gwang-Myeong Sung-Ae General Hospital, Gyeonggii-do 423-711, Republic of Korea
| | - Jin Soo Kim
- Department of Plastic and Reconstructive Surgery, Gwang-Myeong Sung-Ae General Hospital, Gyeonggii-do 423-711, Republic of Korea.
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Moritz AE, Foster JD, Gorentla BK, Mazei-Robison MS, Yang JW, Sitte HH, Blakely RD, Vaughan RA. Phosphorylation of dopamine transporter serine 7 modulates cocaine analog binding. J Biol Chem 2012; 288:20-32. [PMID: 23161550 DOI: 10.1074/jbc.m112.407874] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
As an approach to elucidating dopamine transporter (DAT) phosphorylation characteristics, we examined in vitro phosphorylation of a recombinant rat DAT N-terminal peptide (NDAT) using purified protein kinases. We found that NDAT becomes phosphorylated at single distinct sites by protein kinase A (Ser-7) and calcium-calmodulin-dependent protein kinase II (Ser-13) and at multiple sites (Ser-4, Ser-7, and Ser-13) by protein kinase C (PKC), implicating these residues as potential sites of DAT phosphorylation by these kinases. Mapping of rat striatal DAT phosphopeptides by two-dimensional thin layer chromatography revealed basal and PKC-stimulated phosphorylation of the same peptide fragments and comigration of PKC-stimulated phosphopeptide fragments with NDAT Ser-7 phosphopeptide markers. We further confirmed by site-directed mutagenesis and mass spectrometry that Ser-7 is a site for PKC-stimulated phosphorylation in heterologously expressed rat and human DATs. Mutation of Ser-7 and nearby residues strongly reduced the affinity of rat DAT for the cocaine analog (-)-2β-carbomethoxy-3β-(4-fluorophenyl) tropane (CFT), whereas in rat striatal tissue, conditions that promote DAT phosphorylation caused increased CFT affinity. Ser-7 mutation also affected zinc modulation of CFT binding, with Ala and Asp substitutions inducing opposing effects. These results identify Ser-7 as a major site for basal and PKC-stimulated phosphorylation of native and expressed DAT and suggest that Ser-7 phosphorylation modulates transporter conformational equilibria, shifting the transporter between high and low affinity cocaine binding states.
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Affiliation(s)
- Amy E Moritz
- Department of Biochemistry and Molecular Biology, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota 58203-9037, USA
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117
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Heo S, Yang JW, Huber ML, Planyavsky M, Bennett KL, Lubec G. Mass spectrometric characterization of recombinant rat 5-hydroxytryptamine receptor 1A (5-HT1A
R) expressed in tsA201 human embryonic kidney cells. Proteomics 2012; 12:3338-42. [DOI: 10.1002/pmic.201200183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 07/31/2012] [Accepted: 09/03/2012] [Indexed: 11/12/2022]
Affiliation(s)
- Seok Heo
- Department of Pediatrics; Medical University of Vienna; Vienna Austria
| | - Jae-Won Yang
- Institute of Pharmacology; Medical University of Vienna; Vienna Austria
| | - Marie L. Huber
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences; Vienna Austria
| | - Melanie Planyavsky
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences; Vienna Austria
| | - Keiryn L. Bennett
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences; Vienna Austria
| | - Gert Lubec
- Department of Pediatrics; Medical University of Vienna; Vienna Austria
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118
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Salzer I, Chen WQ, Kubista H, Lubec G, Boehm S, Yang JW. Functional implications of K V7 channel phosphorylation. BMC Pharmacol Toxicol 2012. [PMCID: PMC3506305 DOI: 10.1186/2050-6511-13-s1-a46] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Isabella Salzer
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Wei-Quiang Chen
- Department of Pediatrics, Medical University of Vienna, 1090 Vienna, Austria
| | - Helmut Kubista
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Gert Lubec
- Department of Pediatrics, Medical University of Vienna, 1090 Vienna, Austria
| | - Stefan Boehm
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Jae-Won Yang
- Institute of Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
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119
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Mayer FP, Schmid D, Holy M, Yang JW, Salzer I, Boehm S, Chiba P, Sitte HH. Real-time uptake of fluorescent ASP+ via the organic cation transporter 3. BMC Pharmacol Toxicol 2012. [PMCID: PMC3506348 DOI: 10.1186/2050-6511-13-s1-a80] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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120
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Yang JW, Foster JD, Moritz AE, ChallaSivaKanaka S, Smith MA, Holy M, Wilebski K, Vaughan RA, Sitte HH. Dopamine transporter phosphorylation site threonine 53 regulates substrate reuptake and amphetamine-stimulated efflux. BMC Pharmacol Toxicol 2012. [PMCID: PMC3506304 DOI: 10.1186/2050-6511-13-s1-a45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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121
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Zhou SQ, Wen P, Fang L, Jiang L, Xiong M, Zhang FF, Yang JW. The association between RhEPO and FN expression in glomerular mesangial cells. Panminerva Med 2012; 54:205-209. [PMID: 22801437] [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: 06/01/2023]
Abstract
AIM Erythropoietin (rhEPO) is increasingly being used in the treatment of anemia caused by miscellaneous reasons. The aim of our research is to investigate the effects of recombinant human erythropoietin (rhEPO) on cellular growth and fibronectin (FN) expression in glomerular mesangial cells. METHODS Western blot was used to detect the expression of FN induced by rhEPO (1, 10, 100 and 1000U/mL). In vivo studies, male CD-1 mice were administered rhEPO subcutaneously at a single dose of 1000U/Kg. The cellular hypertrophy was quantified by counting cell number and calculating the ratio of cell protein to cell number. RESULTS 1) Compared with the control group, the results of mesangial cells' growth stimulated by rhEPO were not significantly different; 2) RhEPO lead to hypertrophy of mesangial cells; 3) rhEPO induced FN expression of mesangial cell in a dose-dependent way. Compared to control, 100U/mL rhEPO enhanced the expression of FN significantly; 4) indirect immunofluorescence showed that rhEPO induced large amount deposition of FN in the intercellular space of mesangial cells; 5) in vivo studies, there were markedly increase of FN expression in mice received the injection of rhEPO. CONCLUSION RhEPO could up-regulated the expression of FN and induced glomerular mesangial cells hypertrophy. These results suggested rhEPO could induce dysfunction of renal glomerulus through its influence on the function of mesangial cells.
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Affiliation(s)
- S Q Zhou
- Emergency Department and Surgical Intensive Care Unit, Shanghai 10th People's Hospital Tongji University School of Medicine. Shanghai, China
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122
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Bae N, Yang JW, Sitte H, Pollak A, Marquez J, Lubec G. An electrophoretic approach to screen for glutamine deamidation. Anal Biochem 2012; 428:1-3. [DOI: 10.1016/j.ab.2012.05.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 05/15/2012] [Accepted: 05/18/2012] [Indexed: 11/16/2022]
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123
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Steinkellner T, Montgomery T, Yang JW, Rickhag M, Sucic S, Elgersma Y, Kudlacek O, Freissmuth M, Gether U, Sitte HH. Calmodulin kinase II regulates amphetamine-induced reverse transport in dopamine and serotonin transporters. BMC Pharmacol Toxicol 2012. [PMCID: PMC3506316 DOI: 10.1186/2050-6511-13-s1-a56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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124
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Steinkellner T, Yang JW, Montgomery TR, Chen WQ, Winkler MT, Sucic S, Lubec G, Freissmuth M, Elgersma Y, Sitte HH, Kudlacek O. Ca(2+)/calmodulin-dependent protein kinase IIα (αCaMKII) controls the activity of the dopamine transporter: implications for Angelman syndrome. J Biol Chem 2012; 287:29627-35. [PMID: 22778257 PMCID: PMC3436163 DOI: 10.1074/jbc.m112.367219] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [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] [Indexed: 11/06/2022] Open
Abstract
The dopamine transporter (DAT) is a crucial regulator of dopaminergic neurotransmission, controlling the length and brevity of dopaminergic signaling. DAT is also the primary target of psychostimulant drugs such as cocaine and amphetamines. Conversely, methylphenidate and amphetamine are both used clinically in the treatment of attention-deficit hyperactivity disorder and narcolepsy. The action of amphetamines, which induce transport reversal, relies primarily on the ionic composition of the intra- and extracellular milieus. Recent findings suggest that DAT interacting proteins may also play a significant role in the modulation of reverse dopamine transport. The pharmacological inhibition of the serine/threonine kinase αCaMKII attenuates amphetamine-triggered DAT-mediated 1-methyl-4-phenylpyridinium (MPP(+)) efflux. More importantly, αCaMKII has also been shown to bind DAT in vitro and is therefore believed to be an important player within the DAT interactome. Herein, we show that αCaMKII co-immunoprecipitates with DAT in mouse striatal synaptosomes. Mice, which lack αCaMKII or which express a permanently self-inhibited αCaMKII (αCaMKII(T305D)), exhibit significantly reduced amphetamine-triggered DAT-mediated MPP(+) efflux. Additionally, we investigated mice that mimic a neurogenetic disease known as Angelman syndrome. These mice possess reduced αCaMKII activity. Angelman syndrome mice demonstrated an impaired DAT efflux function, which was comparable with that of the αCaMKII mutant mice, indicating that DAT-mediated dopaminergic signaling is affected in Angelman syndrome.
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Affiliation(s)
- Thomas Steinkellner
- Institute of Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, A-1090 Vienna, Austria
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125
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Foster JD, Yang JW, Moritz AE, Challasivakanaka S, Smith MA, Holy M, Wilebski K, Sitte HH, Vaughan RA. Dopamine transporter phosphorylation site threonine 53 regulates substrate reuptake and amphetamine-stimulated efflux. J Biol Chem 2012; 287:29702-12. [PMID: 22722938 PMCID: PMC3436161 DOI: 10.1074/jbc.m112.367706] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
In the central nervous system, levels of extraneuronal dopamine are controlled primarily by the action of the dopamine transporter (DAT). Multiple signaling pathways regulate transport activity, substrate efflux, and other DAT functions through currently unknown mechanisms. DAT is phosphorylated by protein kinase C within a serine cluster at the distal end of the cytoplasmic N terminus, whereas recent work in model cells revealed proline-directed phosphorylation of rat DAT at membrane-proximal residue Thr(53). In this report, we use mass spectrometry and a newly developed phospho-specific antibody to positively identify DAT phosphorylation at Thr(53) in rodent striatal tissue and heterologous expression systems. Basal phosphorylation of Thr(53) occurred with a stoichiometry of ~50% and was strongly increased by phorbol esters and protein phosphatase inhibitors, demonstrating modulation of the site by signaling pathways that impact DAT activity. Mutations of Thr(53) to prevent phosphorylation led to reduced dopamine transport V(max) and total apparent loss of amphetamine-stimulated substrate efflux, supporting a major role for this residue in the transport kinetic mechanism.
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Affiliation(s)
- James D Foster
- Department of Biochemistry and Molecular Biology, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND 58202-9037, USA
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126
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Park JW, Ro MJ, Nam M, Bang HJ, Yang JW, Choi KS, Kim SK, Chung JH, Kwack KB. No Association between Single Nucleotide Polymorphisms in Urocanase Domain Containing 1 (UROC1) and Autism Spectrum Disorders (ASDs) in the Korean Population. Soa Chongsonyon Chongsin Uihak 2012. [DOI: 10.5765/jkacap.2012.23.1.8] [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: 11/05/2022] Open
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127
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Yang JW, Kim YS, Choi SO, Han BG. Successful use of intravenous linezolid in CAPD patient with vancomycin-resistant enterococcal peritonitis. Perit Dial Int 2012; 31:209-10. [PMID: 21427253 DOI: 10.3747/pdi.2010.00121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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128
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Lee AR, Park JW, Nam M, Bang HJ, Yang JW, Choi KS, Kim SK, Chung JH, Kwack KB. Polymorphisms of CDH9 and CDH10 in Chromosome 5p14 Associated with Autism in the Korean Population. Soa Chongsonyon Chongsin Uihak 2011. [DOI: 10.5765/jkacap.2011.22.4.287] [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: 11/05/2022] Open
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129
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Zachor D, Yang JW, Itzchak EB, Furniss F, Pegg E, Matson JL, Horovitz M, Sipes M, Chung KM, Jung W. Cross-cultural differences in comorbid symptoms of children with autism spectrum disorders: an international examination between Israel, South Korea, the United Kingdom and the United States of America. Dev Neurorehabil 2011; 14:215-20. [PMID: 21513465 DOI: 10.3109/17518423.2011.568468] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To examine the relationship between culture and symptoms of comorbid psychopathology in those with autism spectrum disorders (ASD). DESIGN Multivariate analyses of variance (MANOVAs) for each country and each sub-scale of the Autism Spectrum Disorders-Comorbid for Children (ASD-CC). Follow-up independent univariate analyses and post-hoc tests as needed. METHODS Separate samples from South Korea, the UK and Israel were compared to a sample from the US in order to examine cultural contributions, using the ASD-CC. RESULTS Overall, few differences were found. Significantly, the US had significantly higher scores than South Korea on the avoidant sub-scale. Additionally, the US had significantly higher scores than Israel on the over-eating and tantrum sub-scales. No significant differences were found between the US and the UK. CONCLUSION Cultural factors, such as views of typical behaviour, should be taken into account when examining symptoms of comorbidity in children with ASD.
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Affiliation(s)
- Ditza Zachor
- Assaf Harofeh Medical Center, Tel Aviv University, Israel
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130
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Buchmayer F, Schicker K, Stübiger G, Hamilton PJ, Geier P, Jurik A, Weissensteiner R, Steinkellner T, Matthies HJ, Montgomery T, Winkler MT, Yang JW, Holy M, Ecker GF, Galli A, Bochkov V, Boehm S, Sitte HH. Amphetamine actions rely on the availability of phosphatidylinositol-4,5-bisphosphate. BMC Pharmacol 2011. [PMCID: PMC3194251 DOI: 10.1186/1471-2210-11-s2-a19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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131
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Yang JW, Han ST, Kim YS, Song SH, Kim BR, Eom MS, Jung SH, Choi SO, Han BG. Effects of a cGMP-specific phosphodiesterase inhibitor on expression of endothelial nitric oxide synthase and vascular endothelial growth factor in rats with cyclosporine-induced nephrotoxicity. Transplant Proc 2011; 42:4625-32. [PMID: 21168749 DOI: 10.1016/j.transproceed.2010.09.167] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2010] [Revised: 09/08/2010] [Accepted: 09/30/2010] [Indexed: 11/18/2022]
Abstract
BACKGROUND The mechanism of cyclosporine (CsA)-induced nephrotoxicity has been suggested to be vasoconstriction due to reduced nitric oxide (NO), providing tissue fibrosis by elevation of transforming growth factor beta and vascular endothelial growth factor (VEGF). In this study using a rat model of CsA-induced nephrotoxicity, we administered a phosphodiesterase-5 inhibitor to ameliorate the renal injury and alter the expression of endothelial No synthase (eNOS) and VEGF. METHODS A right nephrectomy was performed in Sprague-Dawley rats (n = 30; 200-250 g, all male). The Ischemia group (n = 6) underwent ligation of the left renal artery for 45 minutes (IR) before observation for 28 days. After IR, the udenafil group (n = 6) was treated with 10 mg/kg drug orally, the CsA group (n = 6) received 15 mg/kg CsA injected subcutaneously and the CsA plus udenafil group (n = 6) received 15 mg/kg CsA injected subcutaneously together with the oral administration of 10 mg/kg udenafil. RESULTS Administration of udenafil significantly decreased serum creatinine either alone (0.21 ± 0.04 mg/dL) or in combination with CsA (1.86 ± 0.35 mg/dL) versus the ischemia (0.85 ± 0.22 mg/dL) and the CsA alone (3. 10 ± 0.77 mg/dL) group. (P = .002; P = .002). Comparing the Hematoxylin-eosin staining of the ischemia (0.41 ± 0.09) and CsA (0.44 ± 0.08) groups showed a significantly decreased loss of nuclei in proximal tubules after the administration of udenafil (0.27 ± 0.05 [P = .004] and 0.26 ± 0.02 [P = .002] respectively). Immunohistochemical staining showed strong eNOS staining in the udenafil and CsA plus udenafil groups. Western blots for eNOS showed decreased expression in the CsA group and increased expression in the udenafil group. Western blots for VEGF revealed reduced expression only in the CsA plus udenafil group. eNOS mRNA was decreased in the CsA (0.017 ± 0.010) compared with the ischemia group (0.048 ± 0.015; P = .000). VEGF mRNA which was decreased in the CsA group (2.026 ± 1.109), showed greater tendency after administration of udenafil (0.440 ± 0.449) (P = .003). CONCLUSION The phosphodiesterase inhibitor ameliorated renal injury in a rat model of CsA-induced nephrotoxicity, possibly related to increased eNOS and reduced VEGF expression.
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Affiliation(s)
- J W Yang
- Department of Nephrology, Yonsei University Wonju College of Medicine, Wonju, Gangwon, Korea
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132
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Vacher H, Yang JW, Cerda O, Autillo-Touati A, Dargent B, Trimmer JS. Cdk-mediated phosphorylation of the Kvb2 auxiliary subunit regulates Kv1 channel axonal targeting. J Gen Physiol 2011. [DOI: 10.1085/jgp1374oia3] [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: 11/20/2022] Open
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133
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Vacher H, Yang JW, Cerda O, Autillo-Touati A, Dargent B, Trimmer JS. Cdk-mediated phosphorylation of the Kvβ2 auxiliary subunit regulates Kv1 channel axonal targeting. ACTA ACUST UNITED AC 2011; 192:813-24. [PMID: 21357749 PMCID: PMC3051814 DOI: 10.1083/jcb.201007113] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [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] [Indexed: 11/22/2022]
Abstract
Phosphorylation of Kvβ2 releases Kv1 channels from microtubules to control their specific distribution at the axonal membrane. Kv1 channels are concentrated at specific sites in the axonal membrane, where they regulate neuronal excitability. Establishing these distributions requires regulated dissociation of Kv1 channels from the neuronal trafficking machinery and their subsequent insertion into the axonal membrane. We find that the auxiliary Kvβ2 subunit of Kv1 channels purified from brain is phosphorylated on serine residues 9 and 31, and that cyclin-dependent kinase (Cdk)–mediated phosphorylation at these sites negatively regulates the interaction of Kvβ2 with the microtubule plus end–tracking protein EB1. Endogenous Cdks, EB1, and Kvβ2 phosphorylated at serine 31 are colocalized in the axons of cultured hippocampal neurons, with enrichment at the axon initial segment (AIS). Acute inhibition of Cdk activity leads to intracellular accumulation of EB1, Kvβ2, and Kv1 channel subunits within the AIS. These studies reveal a new regulatory mechanism for the targeting of Kv1 complexes to the axonal membrane through the reversible Cdk phosphorylation-dependent binding of Kvβ2 to EB1.
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Affiliation(s)
- Hélène Vacher
- Department of Neurobiology, Physiology, and Behavior, College of Biological Sciences, University of California, Davis, Davis, CA 95616, USA.
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134
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Whittle N, Li L, Chen WQ, Yang JW, Sartori SB, Lubec G, Singewald N. Changes in brain protein expression are linked to magnesium restriction-induced depression-like behavior. Amino Acids 2011; 40:1231-48. [DOI: 10.1007/s00726-010-0758-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2010] [Accepted: 01/31/2011] [Indexed: 01/22/2023]
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135
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Affiliation(s)
- Mankyung Jeon
- Department of Plastic and Reconstructive Surgery, Kwang-Myung Sung-Ae General Hospital, Gwangmyeong, Korea
| | - Dongchul Lee
- Department of Plastic and Reconstructive Surgery, Kwang-Myung Sung-Ae General Hospital, Gwangmyeong, Korea
| | - Saehwi Ki
- Department of Plastic and Reconstructive Surgery, Kwang-Myung Sung-Ae General Hospital, Gwangmyeong, Korea
| | - Siyoung Roh
- Department of Plastic and Reconstructive Surgery, Kwang-Myung Sung-Ae General Hospital, Gwangmyeong, Korea
| | - Jae-Won Yang
- Department of Plastic and Reconstructive Surgery, Kwang-Myung Sung-Ae General Hospital, Gwangmyeong, Korea
| | - Jinsoo Kim
- Department of Plastic and Reconstructive Surgery, Kwang-Myung Sung-Ae General Hospital, Gwangmyeong, Korea
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136
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Zhang YP, Liu Y, Song XY, Yuan GL, Chen W, Ji XQ, Ding XT, Yang JW, Zhou J, Li X, Yang QW, Duan XR, Pan CH, Liu Y. Measurements of the fast electron bremsstrahlung emission during electron cyclotron resonance heating in the HL-2A tokamak. Rev Sci Instrum 2010; 81:103501. [PMID: 21034085 DOI: 10.1063/1.3488966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A fast electron bremsstrahlung (FEB) diagnostic technique based on cadmium telluride (CdTe) detector has been developed recently in the HL-2A tokamak for measurements of the temporal evolution of FEB emission in the energy range of 10-200 keV. With a perpendicular viewing into the plasma on the equatorial plane, the hard x-ray spectra with eight different energy channels are measured. The discrimination of the spectra is implemented by an accurate spectrometry. The system also makes use of fast digitization and software signal processing technology. An ambient environment of neutrons, gammas, and magnetic disturbance requires careful shielding. During electron cyclotron resonance heating, the generation of fast electrons and the oscillations of electron fishbone (e-fishbone) have been found. Using the FEB measurement system, it has been experimentally identified that the mode strongly correlates with the electron cyclotron resonance heating produced fast electrons with 30-70 keV.
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Affiliation(s)
- Y P Zhang
- Southwestern Institute of Physics, P. O. Box 432, Chengdu 610041, China.
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137
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Yang JW, Kim JS, Lee DC, Ki SH, Roh SY, Abdullah S, Tien HY. The radial artery superficial palmar branch flap: a modified free thenar flap with constant innervation. J Reconstr Microsurg 2010; 26:529-38. [PMID: 20648418 DOI: 10.1055/s-0030-1262953] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The free thenar flap is useful for coverage of volar finger defects but has an inconstant innervation based on the presence of either the lateral antebrachial cutaneous nerve (LABC) or the superficial sensory branch of the radial nerve (SSRN). A detailed anatomic study on 30 adult fresh frozen cadavers preinjected with silicone rubber compound to demarcate arterial anatomy documented locations, numbers, and diameters of arteries and skin perforators with surrounding nerves. The palmar cutaneous branch of the median nerve (PCMN) was present within the flap in all cases. However, the LABC and the SSRN were available in only 43.33% and 46.66%, respectively, with neither of them in 33.33% of the cases. The constantly present PCMN allowed the design of a new flap named the radial artery superficial palmar branch (RASP) flap. The RASP flap is large enough to cover volar finger defects and contain direct skin perforators. Because it is constantly innervated, it is an excellent option for coverage of volar finger defects extending to the fingertips.
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Affiliation(s)
- Jae-Won Yang
- Hand and Microsurgery Center, Department of Plastic and Reconstructive Surgery, Gwang-Myeong Sung-Ae General Hospital, Gyeong-Gi-Do, Korea.
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138
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Zhang YP, Liu Y, Yang JW, Song XY, Liao M, Li X, Yuan GL, Yang QW, Duan XR, Pan CH. A new soft x-ray pulse height analysis array in the HL-2A tokamak. Rev Sci Instrum 2009; 80:126104. [PMID: 20059178 DOI: 10.1063/1.3263910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A new soft x-ray pulse height analysis (PHA) array including nine independent subsystems, on basis of a nonconventional software multichannel analysis system and a silicon drift detector (SDD) linear array consisting of nine high performance SDD detectors, has been developed in the HL-2A tokamak. The use of SDD has greatly improved the measurement accuracy and the spatiotemporal resolutions of the soft x-ray PHA system. Since the ratio of peak to background counts obtained from the SDD PHA system is very high, p/b > or = 3000, the soft x-ray spectra measured by the SDD PHA system can approximatively be regarded as electron velocity distribution. The electron velocity distribution can be well derived in the pure ohmic and auxiliary heating discharges. The performance of the new soft x-ray PHA array and the first experimental results with some discussions are presented.
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Affiliation(s)
- Y P Zhang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China.
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139
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Lee SJ, Yang JW, Cho IJ, Kim WD, Cho MK, Lee CH, Kim SG. The gep oncogenes, Galpha(12) and Galpha(13), upregulate the transforming growth factor-beta1 gene. Oncogene 2009; 28:1230-40. [PMID: 19151758 DOI: 10.1038/onc.2008.488] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Transforming growth factor-beta1 (TGFbeta1) plays a role in neoplastic transformation and transdifferentiation. Galpha(12) and Galpha(13), referred to as the gep oncogenes, stimulate mitogenic pathways. Nonetheless, no information is available regarding their roles in the regulation of the TGFbeta1 gene and the molecules linking them to gene transcription. Knockdown or knockout experiments using murine embryonic fibroblasts and hepatic stellate cells indicated that a Galpha(12) and Galpha(13) deficiency reduced constitutive, auto-stimulatory or thrombin-inducible TGFbeta1 gene expression. In contrast, transfection of activated mutants of Galpha(12) and Galpha(13) enabled the knockout cells to promote TGFbeta1 induction. A promoter deletion analysis suggested that activating protein 1 (AP-1) plays a role in TGFbeta1 gene transactivation, which was corroborated by the observation that a deficiency of the G-proteins decreased the AP-1 activity, whereas their activation enhanced it. Moreover, mutation of the AP-1-binding site abrogated the ability of Galpha(12) and Galpha(13) to induce the TGFbeta1 gene. Transfection of a dominant-negative mutant of Rho or Rac, but not Cdc42, prevented gene transactivation and decreased AP-1 activity downstream of Galpha(12) and Galpha(13). In summary, Galpha(12) and Galpha(13) regulate the expression of the TGFbeta1 gene through an increase in Rho/Rac-dependent AP-1 activity, implying that the G-protein-coupled receptor (GPCR)-Galpha(12) pathway is involved in the TGFbeta1-mediated transdifferentiation process.
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Affiliation(s)
- S J Lee
- Innovative Drug Research Center for Metabolic and Inflammatory Disease, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Kwanak-Gu, Seoul, Korea
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140
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Schicker K, Hussl S, Chandaka GK, Kosenburger K, Yang JW, Waldhoer M, Sitte HH, Boehm S. A membrane network of receptors and enzymes for adenine nucleotides and nucleosides. BMC Pharmacol 2008. [PMCID: PMC3313231 DOI: 10.1186/1471-2210-8-s1-a40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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141
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Schicker K, Hussl S, Chandaka GK, Kosenburger K, Yang JW, Waldhoer M, Sitte HH, Boehm S. A membrane network of receptors and enzymes for adenine nucleotides and nucleosides. Biochim Biophys Acta 2008; 1793:325-34. [PMID: 18973777 DOI: 10.1016/j.bbamcr.2008.09.014] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2008] [Revised: 09/14/2008] [Accepted: 09/17/2008] [Indexed: 01/19/2023]
Abstract
Most cells express more than one receptor plus degrading enzymes for adenine nucleotides or nucleosides, and cellular responses to purines are rarely compatible with the actions of single receptors. Therefore, these receptors are viewed as components of a combinatorial receptor web rather than self-dependent entities, but it remained unclear to what extent they can associate with each other to form signalling units. P2Y(1), P2Y(2), P2Y(12), P2Y(13), P2X(2), A(1), A(2A) receptors and NTPDase1 and -2 were expressed as fluorescent fusion proteins which were targeted to membranes and signalled like the unlabelled counterparts. When tested by FRET microscopy, all the G protein-coupled receptors proved able to form heterooligomers with each other, and P2Y(1), P2Y(12), P2Y(13), A(1), A(2A), and P2X(2) receptors also formed homooligomers. P2Y receptors did not associate with P2X, but G protein-coupled receptors formed heterooligomers with NTPDase1, but not NTPDase2. The specificity of prototypic interactions (P2Y(1)/P2Y(1), A(2A)/P2Y(1), A(2A)/P2Y(12)) was corroborated by FRET competition or co-immunoprecipitation. These results demonstrate that G protein-coupled purine receptors associate with each other and with NTPDase1 in a highly promiscuous manner. Thus, purinergic signalling is not only determined by the expression of receptors and enzymes but also by their direct interaction within a previously unrecognized multifarious membrane network.
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Affiliation(s)
- Klaus Schicker
- Institute of Pharmacology, Medical University of Vienna, Waehringerstrasse 13a, A-1090 Vienna, Austria
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142
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Azizi AA, Kang SU, Freilinger A, Gruber-Olipitz M, Chen WQ, Yang JW, Hengstschläger M, Slavc I, Lubec G. Mitosis-Dependent Protein Expression in Neuroblastoma Cell Line N1E-115. J Proteome Res 2008; 7:3412-22. [DOI: 10.1021/pr800149p] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amedeo A. Azizi
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
| | - Sung-Ung Kang
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
| | - Angelika Freilinger
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
| | - Mariella Gruber-Olipitz
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
| | - Wei-Qiang Chen
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
| | - Jae-Won Yang
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
| | - Markus Hengstschläger
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
| | - Irene Slavc
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
| | - Gert Lubec
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria, and Department of Medical Genetics, Obstetrics and Gynecology, Medical University of Vienna, Währinger Gürtel 18−20, A-1090 Vienna, Austria
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143
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Lee MS, Yang JW, Ko YH, Han C, Kim SH, Lee MS, Joe SH, Jung IK. Effects of methylphenidate and bupropion on DHEA-S and cortisol plasma levels in attention-deficit hyperactivity disorder. Child Psychiatry Hum Dev 2008; 39:201-9. [PMID: 17763937 DOI: 10.1007/s10578-007-0081-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2007] [Accepted: 08/16/2007] [Indexed: 10/22/2022]
Abstract
We evaluated plasma levels of DHEA-S and cortisol before and after treating ADHD patients with one of two medications: methylphenidate (n = 12) or bupropion (n = 10). Boys with ADHD (combined type) were evaluated with the Korean ADHD rating scale (K-ARS) and the computerized ADHD diagnostic system (ADS). All assessments were measured at baseline and repeated after 12 weeks. There were significant clinical improvements in both treatment groups as measured by K-ARS and ADS. DHEA-S levels increased from baseline to endpoint, but cortisol levels did not change significantly. This study suggests that both methylphenidate and bupropion increase plasma levels of DHEA-S in boys with ADHD.
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144
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Park KS, Yang JW, Seikel E, Trimmer JS. Potassium channel phosphorylation in excitable cells: providing dynamic functional variability to a diverse family of ion channels. Physiology (Bethesda) 2008; 23:49-57. [PMID: 18268365 DOI: 10.1152/physiol.00031.2007] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Phosphorylation of potassium channels affects their function and plays a major role in regulating cell physiology. Here, we review previous studies of potassium channel phosphorylation, focusing first on studies employing site-directed mutagenesis of recombinant channels expressed in heterologous cells. We then discuss recent mass spectrometric-based approaches to identify and quantify phosphorylation at specific sites on native and recombinant potassium channels, and newly developed mass spectrometric-based techniques that may prove beneficial to future studies of potassium channel phosphorylation, its regulation, and its mechanism of channel modulation.
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Affiliation(s)
- Kang-Sik Park
- Section of Neurobiology, Physiology and Behavior, College of Biological Sciences, Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, USA
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145
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Yang JW, Lee SH, Ryu SH, Lee BC, Kim SH, Joe SH, Jung IK, Choi IG, Ham BJ. Association between monoamine oxidase A polymorphisms and anger-related personality traits in Korean women. Neuropsychobiology 2008; 56:19-23. [PMID: 17943028 DOI: 10.1159/000109973] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [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] [Received: 01/12/2007] [Accepted: 08/18/2007] [Indexed: 11/19/2022]
Abstract
It has been suggested that polymorphisms in the monoamine oxidase A (MAO-A) gene are associated with aggressive and impulsive behaviors. In the present study, we investigated the association of the MAO-A variable number of tandem repeat polymorphism in the promoter region (MAO-A uVNTR) with anger-related personality traits. Specifically, MAO-A uVNTR polymorphisms were examined for associations with the State-Trait Anger Expression Inventory (STAXI) scores in 211 normal Korean women. All subjects were assessed using the STAXI and genotyped for MAO-A uVNTR status. The scores on the STAXI subscales differed significantly among the MAO-A uVNTR polymorphism genotypes in terms of anger expression-out (AX-Out) scores. Post hoc comparisons revealed significant differences between the 3/3 and 4/4, and between 3/4 and 4/4 polymorphisms. However, no significant difference was observed in other STAXI subscale scores among these genotypes. Subjects with the high-activity MAO-A uVNTR had significantly higher AX-Out scores than subjects with other genotypes. MAO-A uVNTR polymorphisms may contribute in part to the expression of anger. These findings support the hypothesis that this polymorphism in the MAO-A gene may be associated with anger-related personality traits in Korean women.
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Affiliation(s)
- Jae-Won Yang
- Department of Psychiatry, Korean University, Seoul, South Korea
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146
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Yang JW, Jang WS, Hong SD, Ji YI, Kim DH, Park J, Kim SW, Joung YS. A case-control association study of the polymorphism at the promoter region of the DRD4 gene in Korean boys with attention deficit-hyperactivity disorder: evidence of association with the -521 C/T SNP. Prog Neuropsychopharmacol Biol Psychiatry 2008; 32:243-8. [PMID: 17850946 DOI: 10.1016/j.pnpbp.2007.08.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2007] [Revised: 08/15/2007] [Accepted: 08/15/2007] [Indexed: 10/22/2022]
Abstract
Recent genetic studies at the 5' end of the dopamine D4 receptor (DRD4) gene have identified several polymorphisms having a possible relationship with attention deficit-hyperactivity disorder (ADHD). This study examined the association between the -521 and -376 promoter single nucleotide polymorphisms (SNPs) of the DRD4 gene and ADHD through a case-control association study in Korean boys, who constitute a single ethnic population. Ninety-four ADHD and ninety-five control boys were enrolled in this study. All of the ADHD subjects completed a comprehensive and standardized diagnostic and psychological evaluation battery including the ADHD Rating Scale-IV (ARS). Genotyping for the 2 promoter SNPs was performed. There were significant differences in the genotype and allele frequencies of the -521 C/T SNP between the ADHD and control groups (chi2=6.28, p=0.043 and chi2=6.22, p=0.013, respectively). However, the distribution of the -376 C/T genotypes and alleles were similar in the ADHD and control groups. The subtypes of ADHD were not related to either of these two SNPs. In the ADHD subjects, the -521 TT genotype group had a higher score in the inattentive subscale and a lower score in the hyperactive subscale of the parents version of ARS, although these differences did not attain statistical significance (p=0.146, p=0.082). In conclusion, there was a significant association between the -521 C/T SNP and ADHD in Korean boys. These results suggest a role of the -521 C/T SNP in the susceptibility for ADHD.
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Affiliation(s)
- Jae-Won Yang
- Division of Child & Adolescent Psychiatry, Department of Psychiatry, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul 135-710, Republic of Korea
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147
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Lee BC, Yang JW, Lee SH, Kim SH, Joe SH, Jung IK, Choi IG, Ham BJ. An interaction between the norepinephrine transporter and monoamine oxidase A polymorphisms, and novelty-seeking personality traits in Korean females. Prog Neuropsychopharmacol Biol Psychiatry 2008; 32:238-42. [PMID: 17920180 DOI: 10.1016/j.pnpbp.2007.08.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2007] [Revised: 08/09/2007] [Accepted: 08/09/2007] [Indexed: 11/17/2022]
Abstract
The personality traits associated with the noradrenergic system have not yet been clearly established. In the present study, we investigated the variable number of tandem repeats (VNTR) polymorphism of the norepinephrine transporter (NET) and monoamine oxidase A (MAOA), which are major components of the adrenergic system, to elucidate their relationship with personality. A total of 245 normal female Koreans (age 23.05+/-3.07 years, mean+/-SD) volunteered to take part in this study. They filled out a Korean version of the Temperament and Character Inventory (TCI) and were genotyped for the NET and MAOA-VNTR; the NET T-182C and MAOA-uVNTR polymorphisms were checked. We found significant main effect of NET genotype on novelty seeking (NS) score (F=5.43, p=0.021) and significant interaction between the NET and MAOA-uVNTR polymorphisms on NS score (F=11.06, p=0.001). However, there were no relationship between MAOA-uVNTR polymorphisms and NS score, and no association with other temperamental dimensions and these two polymorphisms. Our findings suggest that this functional polymorphism in the noradrenergic gene is associated with novelty seeking in Korean females.
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Affiliation(s)
- Boung-Chul Lee
- Department of Psychiatry, Hangang Sacred Heart Hospital, Hallym University Medical Center, Seoul, South Korea
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148
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Wadeh H, Yang JW, Li GQ. Ultrastructure of Argulus japonicus Thiele, 1900 (Crustacea: Branchiura) collected from Guangdong, China. Parasitol Res 2007; 102:765-70. [PMID: 18094998 DOI: 10.1007/s00436-007-0837-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2007] [Accepted: 11/30/2007] [Indexed: 11/26/2022]
Affiliation(s)
- H Wadeh
- Department of Parasitology, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, People's Republic of China
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149
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Wang J, Yang JW, Zeevi A, Webber SA, Girnita DM, Selby R, Fu J, Shah T, Pravica V, Hutchinson IV, Burckart GJ. IMPDH1 gene polymorphisms and association with acute rejection in renal transplant patients. Clin Pharmacol Ther 2007; 83:711-7. [PMID: 17851563 DOI: 10.1038/sj.clpt.6100347] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [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: 01/05/2023]
Abstract
Inosine 5'-monophosphate dehydrogenase 1 (IMPDH1) catalyzes the rate-limiting step of the de novo pathway for purine synthesis and is a major target of the immunosuppressive drug mycophenolic acid (MPA). Few variants of the IMPDH1 gene have been reported. The objective of this study was to identify and characterize IMPDH1 variants to determine whether genetic variation contributes to differences in MPA response and toxicity in transplant patients. Seventeen genetic variants were identified in the IMPDH1 gene with allele frequencies ranging from 0.2 to 42.7%. In this study, 191 kidney transplant patients who received mycophenolate mofetil were genotyped for IMPDH1. Two single-nucleotide polymorphisms, rs2278293 and rs2278294, were significantly associated with the incidence of biopsy-proven acute rejection in the first year post-transplantation. Future studies of the multifactorial nature of acute rejection must consider IMPDH1 polymorphisms in MPA-treated patients.
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Affiliation(s)
- J Wang
- Department of Pharmacy, University of Southern California, Los Angeles, California, USA
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150
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Xiao SM, Li GQ, Zhou RQ, Li WH, Yang JW. Combined PCR-oligonucleotide ligation assay for detection of dairy cattle-derived Cyclospora sp. Vet Parasitol 2007; 149:185-90. [PMID: 17850971 DOI: 10.1016/j.vetpar.2007.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Revised: 07/22/2007] [Accepted: 08/01/2007] [Indexed: 11/22/2022]
Abstract
A rapid and sensitive assay for the detection of Cyclospora species in dairy cattle faecal specimens has been developed. The method utilizes a nested PCR to amplify a 168-bp DNA fragment of the 18S rRNA gene of cattle-derived Cyclospora sp. and an enzyme-linked immunosorbent assay (ELISA)-based oligonucleotide ligation assay (OLA) to detect the amplified product. In this study, the OLA technique was compared with conventional gel electrophoresis for the detection of amplified product. In evaluating the PCR-OLA for Cyclospora sp. and non-Cyclospora parasites, A(405) reading value for Cyclospora species was significantly higher than those for non-Cyclospora control. At known concentrations of purified amplicons from cattle-derived Cyclospora sp., the OLA was able to detect more than 0.5 ng of the amplified DNA. Of 168 clinical specimens collected from four dairy cattle farms, 6 were positive by both PCR-gel electrophoresis and the PCR-OLA procedure, and 2 were positive only by PCR-OLA, indicating the PCR-OLA procedure was more sensitive than the common way with gel electrophoresis. The results indicated that the PCR-OLA is simple, rapid and suitable in clinical detection of cattle-derived Cyclospora species.
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Affiliation(s)
- S M Xiao
- Department of Veterinary Parasitology, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
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