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Cho K, Min C, Jung J, Lee S, Lee S, Huh H, Cho S, Shim J, Chang K, Kim W, Yong Ho K, Moon S, Kim E, Yeo S, Kwon S. Dosimetric Evaluation Using MVCT Images for Adapted Plan-Dose Monitoring in Tomotherapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Schuemann J, Dowdell S, Grassberger C, Min C, Paganetti H. Site-Specific Range Uncertainties Due to by Dose Calculation Algorithms for Proton Therapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Min C, Zheng M, Zhang X, Caron MG, Kim KM. Novel roles for β-arrestins in the regulation of pharmacological sequestration to predict agonist-induced desensitization of dopamine D3 receptors. Br J Pharmacol 2014; 170:1112-29. [PMID: 23992580 DOI: 10.1111/bph.12357] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 07/24/2013] [Accepted: 08/18/2013] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE In addition to typical GPCR kinase (GRK)-/β-arrestin-dependent internalization, dopamine D3 receptor employed an additional GRK-independent sequestration pathway. In this study, we investigated the molecular mechanism of this novel sequestration pathway. EXPERIMENTAL APPROACH Radioligand binding, flow cytometry and cell surface biotinylation assay were used to characterize trafficking properties of D2 and D3 receptors. Serine/threonine and N-linked glycosylation mutants of the D3 receptor were utilized to locate receptor regions involved in pharmacological sequestration and desensitization. Various point mutants of the D2 and D3 receptors, whose sequestration and desensitization properties were altered, were combined with knockdown cells of GRKs or β-arrestins to functionally correlate pharmacological sequestration and desensitization. KEY RESULTS The D3 receptor, but not the D2 receptor, showed characteristic trafficking behaviour in which receptors were shifted towards the more hydrophobic domains within the plasma membrane without translocation into other intracellular compartments. Among various amino acid residues tested, S145/S146, C147 and N12/19 were involved in pharmacological sequestration and receptor desensitization. Both pharmacological sequestration and desensitization of D3 receptor required β-arrestins, and functional relationship was observed between two processes when it was tested for D3 receptor variants and agonists. CONCLUSIONS AND IMPLICATIONS Pharmacological sequestration of D3 receptor accompanies movement of cell surface receptors into a more hydrophobic fraction within the plasma membrane and renders D3 receptor inaccessible to hydrophilic ligands. Pharmacological sequestration is correlated with desensitization of the D3 receptor in a Gβγ- and β-arrestin-dependent manner. This study provides new insights into molecular mechanism governing GPCR trafficking and desensitization.
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Issadore D, Park YI, Shao H, Min C, Lee K, Liong M, Weissleder R, Lee H. Magnetic sensing technology for molecular analyses. LAB ON A CHIP 2014; 14:2385-97. [PMID: 24887807 PMCID: PMC4098149 DOI: 10.1039/c4lc00314d] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Magnetic biosensors, based on nanomaterials and miniature electronics, have emerged as a powerful diagnostic platform. Benefiting from the inherently negligible magnetic background of biological objects, magnetic detection is highly selective even in complex biological media. The sensing thus requires minimal sample purification and yet achieves a high signal-to-background contrast. Moreover, magnetic sensors are also well-suited for miniaturization to match the size of biological targets, which enables sensitive detection of rare cells and small amounts of molecular markers. We herein summarize recent advances in magnetic sensing technologies, with an emphasis on clinical applications in point-of-care settings. Key components of sensors, including magnetic nanomaterials, labeling strategies and magnetometry, are reviewed.
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Suyama Y, Kishimoto M, Rokutanda R, Min C, Haji Y, Ohara Y, Shimizu H, Yamaguchi KI, Matsui Y, Okada M. FRI0283 Quality Indicators for Use of Biologic Agents in Rheumatic Diseases. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Rokutanda R, Haji Y, Kishimoto M, Min C, Ohara Y, Suyama Y, Shimizu H, Yamaguchi K, Takeda A, Matsui Y, Sasaki S, Okada M. SAT0087 Diagnostic Performance of Anti-Ccp Antibody at Annual Health CHECK Up. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Rokutanda R, Haji Y, Kishimoto M, Min C, Ohara Y, Suyama Y, Shimizu H, Yamaguchi K, Nomura A, Takeda A, Yukio M, Okada M. FRI0393 Efficacy and Safety of Multi-Target Therapy with Mizoribine and Tacrolimus for Lupus Nephritis: Analysis of 28 Cases. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lee S, Choi S, Min C, Ji Y, Jung H, Kim M, Yoo H, Kim C, Yi C, kim K. SU-E-J-106: Study of Variation of Internal Taget Volume Between 4DCT and Slow-CT in Respiratory Patterns Using Respiratory Motion Phantom. Med Phys 2014. [DOI: 10.1118/1.4888158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Shengmou L, Min C, Chenhong W, Shengli L, Jiansheng X, Hui Y, Dinghao L, Xiaoxia W, Wei W, Hongyun Z, Haiyan T. [Effects, safety and cost-benefit analysis of Down syndrome screening in first trimester]. ZHONGHUA FU CHAN KE ZA ZHI 2014; 49:325-330. [PMID: 25030727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To investigate the effects, safety and cost-benefit analysis of Down syndrome screening in first trimester. METHODS From January 2009 to December 2012, 43 729 pregnant women undergoing 3 methods of Down syndrome traditional screening strategies in Shenzhen Maternity and Child Healthcare Hospital were studied retrospectively, including in 17 502 cases in pregnancy associated plasma protein A (PAPP-A) and free β-hCG measured biochemistry screening, 14 080 cases in nuchal translucency (NT) screening and 12 147 cases in combined screening, meanwhile, 7 389 cases on non-invasive fetal trisomy test (NIFTY) were performed in Huada Gene Research Institute(BGI). The effects and safety of four screening strategies were assessed throughout a decision tree. The economical characters of each screening strategy were compared by cost-effectiveness analysis as well as cost-benefit analysis. RESULTS (1) The effects of four strategies are: NIFTY > combined screening > NT screening > biochemistry screening. (2) The safety of four strategies are: NIFTY > combined screening > NT screening > biochemistry screening. (3) Cost-effectiveness analysis and cost-benefit analysis:the biochemistry screening has lowest cost-effectiveness ratio (CER) and highest cost-benefit ratio (CBR), which performed a better economical efficiency. The incremental CER of three traditional screening strategies are all less than the economical burden of Down syndrome.NIFTY has highest CER and negative net present value (NPV), NPV would be positive and CBR would be more than 1 if the price of NIFTY reduce to 1 434 Yuan. CONCLUSIONS Combined screening possess best screening efficiency, while biochemistry screening was demonstrated more economical in traditional screening.NIFTY is the future of Down syndrome screening.
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Xiang Z, Yan-Liang Q, Xiao-Yang S, Yan-Hui Z, Min C, Guo-Shen G, Ming-Chun W, Zhong-Bing L, Qing-Li W, Guang-Jun H, Ming-Zhe Q, Jun T. Effects of promethazine or dexamethasone pretreatment on mivacurium-induced histamine release in children. Paediatr Anaesth 2014; 24:322-6. [PMID: 24238032 DOI: 10.1111/pan.12305] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/08/2013] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To determine the effects of pretreatment with either promethazine or dexamethasone on mivacurium-induced histamine release in children. METHODS Eighty ASA I-II children (4-10 years of age) scheduled for tonsillectomy and/or adenoidectomy were randomly divided into 4 groups (n = 20 per group) designated as either the rocuronium, mivacurium, dexamethasone (DXM), or promethazine group. Children in the DXM and promethazine groups were treated separately with intramuscular DXM 0.2 mg·kg(-1) or promethazine 0.5 mg·kg(-1) injections 60 min before operation. Radial artery blood samples were collected to quantify plasma histamine concentrations 1 min before and 1, 3, and 5 min after administration of the relaxant. Mean arterial pressure (MAP), heart rate (HR), and skin flushing were recorded at the same time. RESULTS No significant decreases in plasma histamine concentrations were observed between groups; however, more stable MAP and HR and less skin flushing were observed in DXM group participants compared with individuals in the mivacurium group (P < 0.05). By contrast, children in the promethazine group had significantly decreased plasma histamine concentrations and stable MAP and HR (without a significant increase in HR) compared with patients in mivacurium group. In addition, skin flushing was significantly decreased compared with that observed in the rocuronium group (P < 0.05). CONCLUSIONS Pretreatment with promethazine significantly decreased mivacurium-induced histamine release in children and provided stable hemodynamics during administration of anesthesia.
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Haji Y, Kishimoto M, Rokutanda R, Min C, Ohara Y, Suyama Y, Shimizu H, Yamaguchi KI, Deshpande GA, Ohde S, Takeda A, Matsui Y, Matsui T, Nishino J, Okada M, Tohma S. SAT0039 A Prediction Rule for Sustained Remission of Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2013-eular.1765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lee S, Choi S, Min C, Park S, Jung H, Yi C, Yoo H, Kim M, Ji Y, Kim K. EP-1704: Evaluation of internal target volumes between 4D CT, Slow CT and CBCT according to breath patterns. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31822-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Min C, Min H, Kemei P, Ke X, Haibo H, Daiyun Z, Xinting Z. Expression of somatostatin and cDNA cloning in the thymus of the African ostrich. Acta Histochem 2014; 116:191-6. [PMID: 23915476 DOI: 10.1016/j.acthis.2013.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 06/30/2013] [Accepted: 07/02/2013] [Indexed: 11/15/2022]
Abstract
The thymus in addition to being a central lymphoid organ is also an endocrine organ which produces various neuropeptides that influence the function of this gland. Somatostatin is a neuropeptide that was isolated initially in the hypothalamus and which inhibits the release of growth hormone. The distribution of somatostatin-producing cells and the sequence of somatostatin have been determined in many species. In the present study, we investigated the expression of somatostatin in the thymus of the African ostrich and its sequence by reverse-transcriptase polymerase chain reaction and immunohistochemistry. The results showed that somatostatin mRNA was expressed in the thymus and somatostatin immunoreative cells were distributed in both the cortical and medullary regions of the thymus. Results of cDNA cloning revealed that the nucleotide sequence and the encoded protein of African ostrich somatostatin were 348 bases and 116 amino acids in length and that it is highly conserved to that of other reported species. These findings indicated that the somatostatin expressed in the thymus of ostrich might play an important role in the function of the gland. In addition, this research has provided novel molecular data allowing further study of somatostatin in the ostrich.
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Min C, Bangalore S, Jhawar S, Guo Y, Nicholson J, Formenti S, Leichman L, Du K. Chemoradiation Therapy Versus Chemotherapy Alone for Gastric Cancer After R0 Surgical Resection: A Meta-Analysis of Randomized Trials. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Min C, Gold H, Narayana A, Formenti S. Whole Brain Radiation Therapy With Stereotactic Radiosurgery Boost Versus Stereotactic Radiosurgery Alone for Brain Metastases: A Cost-Effectiveness Analysis. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Ya-jie J, Wei-jun P, Cai C, Jian-hui D, Wei Z, Min C, Guang-yu L. Application of breast ultrasound in a mammography-based Chinese breast screening study. Cell Biochem Biophys 2013; 65:37-41. [PMID: 22872584 DOI: 10.1007/s12013-012-9400-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
We evaluated the clinical significance of the combined use of mammography + ultrasound as a new breast screening strategy. The inclusion criteria were: (1) females aged >40yrs; (2) breast cancer diagnosis by the breast image screening personnel at FUSCC; (3) screening by both ultrasound and mammography; (4) mammographic/sonographic images analyzed independently by different radiologists; and (5) follow-up for at least 1 year. Fifty-four women were enrolled. The analysis included diagnostic sensitivity of mammography, ultrasound, and mammography + ultrasound. The sensitivities of mammography and mammography + ultrasound were compared overall as well as among different age groups/breast densities. The screening sensitivity of mammography, ultrasound, and mammography + ultrasound was 79.6, 57.4, and 92.6 %, respectively. The difference between mammography and mammography + ultrasound was significant (P < 0.05). The benefit of including ultrasound with mammography as a new breast image screening strategy was found statistically significant in patients with dense breast on mammogram while it was non-significant in younger (<50 years) women. We, therefore, concluded that mammography + ultrasound increased the diagnostic sensitivity of breast screening; hence it was more desirable for women with dense breast on mammography.
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Haiyang J, Wenjun W, Jinghui Z, Xiaoqi T, Jiancheng L, Xi X, Kai W, Fei X, Zhaopeng W, Min C, Xiangmei L, Xiaoping W, Shien W, Shuangyang D. Determination of zeranol and its metabolites in bovine muscle and liver by a chemiluminescence enzyme immunoassay: compared to an ultraperformance liquid chromatography tandem mass spectroscopy method. LUMINESCENCE 2013; 29:393-400. [PMID: 23934682 DOI: 10.1002/bio.2559] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 05/20/2013] [Accepted: 05/26/2013] [Indexed: 11/12/2022]
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Schuemann J, Testa M, Bueno M, Min C, Moteabbed M, Giantsoudi D, Paganetti H. SU-E-T-451: Patient and Site-Specific Assessment of the Value of Routine Monte Carlo Dose Calculation in Proton Therapy. Med Phys 2013. [DOI: 10.1118/1.4814884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Rokutanda R, Kishimoto M, Yamaguchi K, Shimizu H, Suyama Y, Ohara Y, Haji Y, Min C, Takeda A, Matsui Y, Okada M, Nishioka K. AB0192 Can anti-ccp antibody titer predict the use of biologics ? Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Rokutanda R, Kishimoto M, Yamaguchi K, Shimizu H, Suyama Y, Ohara Y, Haji Y, Min C, Takeda A, Matsui Y, Matsubara T, Nishioka K, Okada M. SAT0557 Diagnostic Performance of Rheumatoid Factor and Anti-CCP Antibody for Detecting Undiagnosed Rheumatoid Arthritis in Annual Health Check. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Testa M, Min C, Schuemann J, Verburg J, Lu H, Paganetti H. WE-G-500-04: A Novel Technique for In-Vivo and Real-Time Range Verification Based On the Characteristic Prompt Gamma Time-Structure of Passively Modulated Proton Beams. Med Phys 2013. [DOI: 10.1118/1.4815637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Cho DI, Zheng M, Min C, Kwon KJ, Shin CY, Choi HK, Kim KM. ARF6 and GASP-1 are post-endocytic sorting proteins selectively involved in the intracellular trafficking of dopamine D₂ receptors mediated by GRK and PKC in transfected cells. Br J Pharmacol 2013; 168:1355-74. [PMID: 23082996 PMCID: PMC3596642 DOI: 10.1111/bph.12025] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 09/07/2012] [Accepted: 09/28/2012] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE GPCRs undergo both homologous and heterologous regulatory processes in which receptor phosphorylation plays a critical role. The protein kinases responsible for each pathway are well established; however, other molecular details that characterize each pathway remain unclear. In this study, the molecular mechanisms that determine the differences in the functional roles and intracellular trafficking between homologous and PKC-mediated heterologous internalization pathways for the dopamine D₂ receptor were investigated. EXPERIMENTAL APPROACH All of the S/T residues located within the intracellular loops of D₂ receptor were mutated, and the residues responsible for GRK- and PKC-mediated internalization were determined in HEK-293 cells and SH-SY5Y cells. The functional role of receptor internalization and the cellular components that determine the post-endocytic fate of internalized D₂ receptors were investigated in the transfected cells. KEY RESULTS T134, T225/S228/S229 and S325 were involved in PKC-mediated D₂ receptor desensitization. S229 and adjacent S/T residues mediated the PKC-dependent internalization of D₂ receptors, which induced down-regulation and desensitization. S/T residues within the second intracellular loop and T225 were the major residues involved in GRK-mediated internalization of D₂ receptors, which induced receptor resensitization. ARF6 mediated the recycling of D₂ receptors internalized in response to agonist stimulation. In contrast, GASP-1 mediated the down-regulation of D₂ receptors internalized in a PKC-dependent manner. CONCLUSIONS AND IMPLICATIONS GRK- and PKC-mediated internalizations of D₂ receptors occur through different intracellular trafficking pathways and mediate distinct functional roles. Distinct S/T residues within D₂ receptors and different sorting proteins are involved in the dissimilar regulation of D₂ receptors by GRK2 and PKC.
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Kim M, Kim E, Min C, Yeo S. AOSP1 INTENSITY-MODULATED STEREOTACTIC BODY RADIOTHERAPY FOR STAGE I NON-SMALL-CELL LUNG CANCER. Eur J Cancer 2013. [DOI: 10.1016/s0959-8049(13)70016-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Min C, Yock T, Winey B, MacDonald S, Tarbell N, Adams J, Paganetti H. Dose Response Relationship for Permanent Alopecia in Pediatric Medulloblastoma Patients Treated With Proton Radiation Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Min C, Zhu X, Winey B, Grogg K, Fakhri G, Bortfeld T, Paganetti H, Shih H. In Vivo Treatment Verification Using In-room PET in Proton Radiation Therapy: First Clinical Trials and Evaluation of Short-length Scan. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Min C, Connolly E, Chen T, Pope S, Jozsef G, Formenti S. Whole Breast Hypofractionated Radiation Therapy: Outcomes, Toxicities, and Cost-benefit Analysis. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Paganetti H, Schuemann J, Grassberger C, Verburg J, Giantsoudi D, Moteabbed M, Min C, Testa M, Faddegon B, Perl J. Advanced Dose Calculation to Reduce Uncertainties in Treatment Planning and Delivery for Proton Therapy Patients. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Min C, Li L, yun XZ, Min C. THE FOLLOW-UP OBSERVATION FOR VVI AND DDD PACING IN SINUS BRADYCARDIA AFTER VALVE REPLACEMENT. BRITISH HEART JOURNAL 2012. [DOI: 10.1136/heartjnl-2012-302920a.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Cho DI, Min C, Jung KS, Cheong SY, Zheng M, Cheong SJ, Oak MH, Cheong JH, Lee BK, Kim KM. The N-terminal region of the dopamine D2 receptor, a rhodopsin-like GPCR, regulates correct integration into the plasma membrane and endocytic routes. Br J Pharmacol 2012; 166:659-75. [PMID: 22117524 DOI: 10.1111/j.1476-5381.2011.01787.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND AND PURPOSE Functional roles of the N-terminal region of rhodopsin-like GPCR family remain unclear. Using dopamine D(2) and D(3) receptors as a model system, we probed the roles of the N-terminal region in the signalling, intracellular trafficking of receptor proteins, and explored the critical factors that determine the functionality of the N-terminal region. EXPERIMENTAL APPROACH The N-terminal region of the D(2) receptor was gradually shortened or switched with that of the D(3) receptor or a non-specific sequence (FLAG), or potential N-terminal glycosylation sites were mutated. Effects of these manipulations on surface expression, internalization, post-endocytic behaviours and signalling were determined. KEY RESULTS Shortening the N-terminal region of the D(2) receptor enhanced receptor internalization and impaired surface expression and signalling; ligand binding, desensitization and down-regulation were not affected but their association with a particular microdomain, caveolae, was disrupted. Replacement of critical residues within the N-terminal region with the FLAG epitope failed to restore surface expression but partially restored the altered internalization and signalling. When the N-terminal regions were switched between D(2) and D(3) receptors, cell surface expression pattern of each receptor was switched. Mutations of potential N-terminal glycosylation sites inhibited surface expression but enhanced internalization of D(2) receptors. CONCLUSIONS AND IMPLICATIONS Shortening of N-terminus or mutation of glycosylation sites located within the N-terminus enhanced receptor internalization but impaired the surface expression of D(2) receptors. The N-terminal region of the D(2) receptor, in a sequence-specific manner, controls the receptor's conformation and integration into the plasma membrane, which determine its subcellular localization, intracellular trafficking and signalling properties.
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Min C, Zhu X, Grogg K, Winey B, Fakhri G, Bortfeld T, Shih H, Paganetti H. MO-A-213AB-07: Evaluation of Distal Dose Surface with In-Room PET for Proton Therapy Monitoring. Med Phys 2012; 39:3860. [DOI: 10.1118/1.4735759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ohta K, Laborde N, Kajiya M, Shin J, Zhu T, Thondukolam A, Min C, Kamata N, Karimbux N, Stashenko P, Kawai T. Expression and possible immune-regulatory function of ghrelin in oral epithelium. J Dent Res 2011; 90:1286-92. [PMID: 21865591 PMCID: PMC3188459 DOI: 10.1177/0022034511420431] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 06/24/2011] [Accepted: 07/04/2011] [Indexed: 12/21/2022] Open
Abstract
Originally found in stomach mucosa, ghrelin is a peptide appetite hormone that has been implicated as an immuno-modulatory factor. Ghrelin has also been found in salivary glands and saliva; however, its expression patterns and biological properties in the oral cavity remain unclear. Therefore, we investigated the expression patterns of ghrelin in saliva, gingival crevicular fluid (GCF), and gingival tissue, as well as its in vitro effects on IL-8 production by TNF-α or LPS-stimulated oral epithelial cells. In the clinical samples obtained from 12 healthy volunteers, the concentration of ghrelin in GCF remarkably exceeded that detected in saliva. The expression of ghrelin mRNAs and growth hormone secretagogue (GHS) receptors could be detected in human oral epithelial cells. Immunohistochemical analysis revealed the expression of ghrelin in gingival epithelium, as well as in fibroblasts in the lamina propria. Ghrelin increased intracellular calcium mobilization and cAMP levels in oral epithelial cells, suggesting that ghrelin acts on epithelial cells to induce cell signaling. Furthermore, synthetic ghrelin inhibited the production of IL-8 from TNF-α or LPS-stimulated oral epithelial cells. These results indicate that ghrelin produced in the oral cavity appears to play a regulatory role in innate immune responses to inflammatory infection.
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Yin Y, Zhou S, Min C, Wu L. Preparation of rattle-type magnetic mesoporous carbon spheres and their highly efficient adsorption and separation. J Colloid Interface Sci 2011; 361:527-33. [DOI: 10.1016/j.jcis.2011.05.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 05/06/2011] [Accepted: 05/08/2011] [Indexed: 10/18/2022]
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84
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Yang Y, Lin M, Huang SJ, Min C, Liao WQ. A rare presentation of pemphigus vulgaris as multiple pustules. Indian J Dermatol 2010; 55:293-5. [PMID: 21063530 PMCID: PMC2965924 DOI: 10.4103/0019-5154.70675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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85
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Min C, Hardee M, Pope S, Becker S, Lymberis S, DeWyngaert K, Formenti S. Prone Hypo-fractionated Whole Breast Radiation without a Concomitant Boost: Comparative Effectiveness of Intensity Modulated Radiation Therapy (IMRT) vs. 3D-conformal Radiation Therapy (3D-CRT). Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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86
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Lee D, Kim J, Choi B, Lee Y, Kim D, Park J, Han C, Min W, Min C, Chung S. The Effects of Splenic Irradiation in Chronic Myeloid Leukemia. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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87
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Min C, Qiutang Z, Douglas L. e0194 Src family kinase SFK is essential for recruitment of bonemarrow progenitor cells to the ischaemic myocardium. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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88
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Min C, Qiutang Z, Douglas L. e0193 A critical role of ckit in CXCR4-mediated progenitor cell niche maintenance and mobilisation. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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89
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Lee S, Min C, Kim G, Cho D, Chung W. Stereotactic body radiotherapy of spine metastasis. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e19632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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90
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Yang D, Qing Y, Min C. Incorporation of the chlorophyll d-binding light-harvesting protein from Acaryochloris marina and its localization within the photosynthetic apparatus of Synechocystis sp. PCC6803. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2010; 1797:204-11. [DOI: 10.1016/j.bbabio.2009.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Revised: 10/11/2009] [Accepted: 10/14/2009] [Indexed: 11/30/2022]
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91
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Ye JY, Huang ZY, Min C, Pan SR, Chen DH. Structure and haemocompatibility of ZnO films deposited by radio frequency sputtering. Biomed Mater 2009; 4:055004. [DOI: 10.1088/1748-6041/4/5/055004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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92
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Kim Y, Chung N, Cho S, Kim M, Kim E, Son H, Choi H, Kim H, Min C, Lee S, Kim D, Min W, Kim C, Kim T. C030 Long-term remission of post-transplant MDS/AML by adoptive transfer of allogeneic WT1-specific CD4+ and CD8+ T lymphocytes. Leuk Res 2009. [DOI: 10.1016/s0145-2126(09)70068-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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93
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Kim J, Lee S, Hwang M, Ko S, Min C, Kim-Ha J. Bunched specifically regulates alpha/beta mushroom body neuronal cell proliferation during metamorphosis. Neuroscience 2009; 161:46-52. [PMID: 19328837 DOI: 10.1016/j.neuroscience.2009.03.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2008] [Revised: 03/17/2009] [Accepted: 03/19/2009] [Indexed: 01/18/2023]
Abstract
In Drosophila, mushroom bodies are centers for higher order behavior. Mushroom body neurons consist of three distinct types of neuronal cells, alpha, alpha'/beta', and alpha/beta, which are all generated by the same neuroblasts. The mechanism by which a single neuroblast generates three different types of mushroom body neurons is a compelling area of research. Here, we report that bunched (bun) is expressed only in alpha/beta-type mushroom body neurons and that mutation of the bun gene only affects the development of alpha/beta neurons. Reduced bun expression causes decreased and premature arrest of neuroblast cell division, which results in reduced numbers of alpha/beta neurons and thin axon bundled formation. We propose that bun acts as a specific factor in regulating neuroblast mitotic activity during the development of alpha/beta neurons.
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94
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Zhao Y, Min C, Vora S, Trackman PC, Sonenshein GE, Kirsch KH. The lysyl oxidase pro-peptide attenuates fibronectin-mediated activation of the focal adhesion kinase and p130Cas in breast cancer cells. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-4073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Abstract #4073
The lysyl oxidase (LOX) gene encodes an enzyme (LOX) critical for extracellular matrix maturation. The LOX gene has also been shown to inhibit the transforming activity of Ras oncogene signaling. In particular, the pro-peptide domain (LOX-PP) of the secreted precursor protein (Pro-LOX) was found to inhibit the transformed phenotype of breast, lung and pancreatic cancer cells. LOX-PP expression in these carcinoma cells reverted Her-2/neu- and Ras-mediated epithelial to mesenchymal transition (EMT), leading to increased expression of E-cadherin and γ-catenin, and reduced levels of Snail, vimentin and/or BCL2, as well as invasion through Matrigel. Furthermore, LOX-PP expression reduced tumor formation of Her-2/neu driven breast cancer cells in a xenograft model. However, the mechanism of action remains to be determined. Here the ability of LOX-PP to attenuate the integrin signaling pathway in NF639 breast cancer cells driven by Her-2/neu, which signals via Ras, was tested. Ectopic Pro-LOX and LOX-PP expression inhibited fibronectin-stimulated protein tyrosine phosphorylation. Importantly, phosphorylation of the focal adhesion kinase (FAK) on Tyr397 and Tyr576, and the activation of its downstream target p130Cas were substantially reduced. Furthermore, these changes were also reflected by a reduced amount of endogenous p130Cas in the Triton X-100 insoluble protein fraction, and attenuation of fibronectin-activated haptotaxis. Interestingly, expression of mature LOX enzyme enhanced fibronectin-stimulated integrin signaling. Of note, treatment with recombinant LOX-PP reduced haptotaxis of NF639 and human MDA-MB-231 and Hs578T breast cancer cells. Thus, the tumor suppressor function of LOX-PP is likely mediated, in part, by blocking integrin signaling and fibronectin-stimulated cell migration.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 4073.
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Kim G, Shim S, Chung W, Min C, Kim J. The Evaluation of Tumor Motion and Treatment Accuracy in Liver Tumor using Synchrony Motion Tracking System (generation 4 (g4) Cyberknife). Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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96
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Min C, Song D, Teslow T, Christodouleas J, Lin S, Asrari F, Wong J, McNutt T. Determination of Inter-user Image Registration Variability for PTV Margin Determination in MVCT Image Guided Prostate Radiotherapy. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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97
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Min C, Jianmei L, Chenglin P, Xingming G. Time synchronization in wireless physiological information sensor network. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2007; 2005:5176-8. [PMID: 17281413 DOI: 10.1109/iembs.2005.1615643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Time synchronization is necessary to a Wireless Sensor Network (WSN). Existing time synchronization methods are mostly designed for large scale ad hoc network and are not suitable for small star network like Wireless Physiological Information Sensor Network (WPISN). In this article we present a simple and power-efficient time synchronization method designed specially for WPISN, Reference on Demand Time Synchronization method (RDTS), which employs the Near-Field Magnetic Communication (NFMC) technology. NFMC offers significant power, cost, and size advantages over RF communication.
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Min C, Hesheng L, Jihong C, Qiaoyun T, Xianzhen L, Chireyeth S. Effects and mechanism of changes of local neurotransmitters in rats' pylorus and bile reflux to the stomach with stress ulcer. Dig Dis Sci 2005; 50:1898-903. [PMID: 16187194 DOI: 10.1007/s10620-005-2958-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2004] [Accepted: 02/22/2005] [Indexed: 12/09/2022]
Abstract
Stress ulcer occurs primarily in severe conditions, with a high incidence and mortality in intensive care units. However, studies on the association between stress ulcer and bile reflux to the stomach with stress ulcer are still inconclusive. Therefore, our research aimed to determine whether or not bile reflux exists during stress ulcer and then to investigate the effects and mechanism of changes of pyloric local neurotransmitters on bile reflux in such circumstances so as to provide a new pathway for clinical intervention. Cold water immersion was used to copy the stress ulcer model of rats. Sixty-five adult Sprague-Dawley rats of either sex were randomly divided into three groups: the normal control group (n = 10), the stress group (n = 30), and the antagonist group (n = 25). The gastric ulcer index, pH, and bile acid of gastric juice were measured before and after stress. Radio Immunoassay Detection Kit and Biochemic Detection Kit were used to measure local contents of CGRP (calcitonin gene-related peptide) and nitric oxide, respectively, in rats' pylorus. The local contents of nitric oxide in rats' pylorus reached a maximum at 1 hr after stress. The bile acid and pH of gastric juice peaked at 2 hr after stress and the ulcer index peaked at 4 hr after stress. But the local contents of CGRP in rats' pylorus decreased to the minimum at 4 hr after stress. The bile acid and ulcer index in the L-NAME group were significantly lower than in the antagonist control group. However, the bile acid in the hCGRP8-37 group was less than in the antagonist control group. Compared with hCGRP8-37 group, there was a significant reduction in bile acid in the L-NAME group. There was a significant reduction in the ulcer index of the hCGRP8-37 group compared with the L-NAME group and the antagonist control group. There was a certain kind of positive correlation between nitric oxide in rats' pylorus and bile acid to the stomach, for nitric oxide could loosen the pyloric sphincter and increase the bile acid to the stomach. L-NAME might reduce the local nitric oxide contents in rats' pylorus so that bile acid to the stomach might be decreased, obviously with a looser tight pyloric sphincter. Meanwhile, the CGRP in rats' pylorus was negatively associated with the ulcer index, hence CGRP might protect gastric mucosa under stress conditions.
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Lee S, Lee J, Choi K, Lee Y, Lee S, Min C. Down-Regulation of IL-6 in Mouse Blastocysts From the Embryos Vitrified at Early Stage of Development. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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