351
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Song H, Kim EA, Shin JE, Kim JH, Choi DH, Yoon T. Egr1 acts as a critical mediator of estrogenic actions in mouse uterus. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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352
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Song H, Yuan Z, Zhang J, Zhou T. Molecular level dynamics of genetic oscillator--the effect of protein-protein interaction. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2011; 34:77. [PMID: 21822815 DOI: 10.1140/epje/i2011-11077-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 07/15/2011] [Indexed: 05/31/2023]
Abstract
Uncovering how interactions of a set of molecular components influence the system's dynamic behavior is important for understanding intracellular processes and elucidating design principles, but unfortunately, there are limited efforts for studying this issue. Here, we study the effect of distinct post-translational dynamics controlled by protein dimerization on oscillations in the repressilator. For this, we propose three biologically motivated model scenarios of the repressilator with monomer or dimer being the active form of repressor, and with protein-protein interactions. It is found that the dimer dissociation constant can tune oscillatory regions, frequency and amplitude. Introducing a modified linear noise approximation to evaluate fluctuations of amplitude and period in the oscillatory systems, we show that different dimerization leads to a different effect on period and amplitude in reducing noise. The manipulation of the circuit's biochemical properties provides a practical strategy for designing a robust and tunable oscillator.
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353
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Lin QB, Li B, Song H, Wu HJ. Determination of silver in nano-plastic food packaging by microwave digestion coupled with inductively coupled plasma atomic emission spectrometry or inductively coupled plasma mass spectrometry. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 28:1123-8. [DOI: 10.1080/19440049.2011.580013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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354
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Lin QB, Wang TJ, Song H, Wang RZ. Kinetic migration of isothiazolinone biocides from paper packaging to Tenax and Porapak. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 28:1294-301. [DOI: 10.1080/19440049.2011.584071] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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355
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Dai L, Song H, Wang F, Zhang D. PP-074 Influenza-related Host Gene Database (IHGDB): an integrated information resource for influenza-related host's genes. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60227-0] [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] Open
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356
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Eun LY, Song H, Choi E, Lee TG, Moon DW, Hwang D, Byun KH, Sul JH, Hwang KC. Implanted bone marrow-derived mesenchymal stem cells fail to metabolically stabilize or recover electromechanical function in infarcted hearts. Tissue Cell 2011; 43:238-45. [PMID: 21700305 DOI: 10.1016/j.tice.2011.04.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 04/26/2011] [Accepted: 04/27/2011] [Indexed: 11/27/2022]
Abstract
Mesenchymal stem cells (MSCs) have been used with success in several clinical applications for clinical treatment of ischemic hearts. However, the reported effects of MSC-based therapy on myocardial infarction (MI) are inconsistent. In particular, the preventive effects of MSC-based therapy on arrhythmic sudden death and metabolic disorders after infarction remain controversial. Here, we investigated the effects of MSCs on reverse remodeling in an infarcted myocardium, and found that MSC-therapy failed to achieve the complete regeneration of infarcted myocardium. Histological analyses showed that although infarct size and interstitial fibrosis induced by MI recovered significantly after MSC treatment, these improvements were marginal, indicating that a significant amount of damaged tissue was still present. Furthermore, transplanted MSCs had slight anti-apoptotic and anti-inflammatory effects in MSC-implanted regions and no significant improvements in cardiac function were observed, suggesting that naïve MSCs might not be the right cell type to treat myocardial infarction. Furthermore, small ion profiling using ToF-SIMS revealed that the metabolic stabilization provided by the MSCs implantation was not significant compared to the sham group. Together, these results indicate that pretreatment of MSCs is needed to enhance the benefits of MSCs, particularly when MSCs are used to treat arrhythmogenicity and metabolically stabilize infarcted myocardium.
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357
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Song H, Salama J. SU-E-T-266: Propagation of Human Error within a Radiation Oncology Department. Med Phys 2011. [DOI: 10.1118/1.3612217] [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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358
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Hobbs R, Song H, Huso D, Sgouros G. SU-E-T-324: A Nephron-Based Dosimetry Model for Alpha-Particle Radiopharmaceutical Therapy. Med Phys 2011. [DOI: 10.1118/1.3612278] [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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359
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Kim S, Song H, Movsas B, Chetty I. SU-E-I-26: A Monte Carlo Based Study on X-Ray Characteristics of Two Commercial Multi-Detector CT Simulators. Med Phys 2011. [DOI: 10.1118/1.3611599] [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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360
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Perez CA, Song H, Raez LE, Agulnik M, Grushko TA, Dekker A, Stenson K, Blair EA, Olopade OI, Seiwert TY, Vokes EE, Cohen EE. Phase II study of gefitinib adaptive dose escalation to skin toxicity in recurrent and/or metastatic squamous cell carcinoma of the head and neck. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.5517] [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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361
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Ahn M, Sun J, Ahn JS, Kim S, Lee KH, Min YJ, Yun HJ, Kim H, Song H, Kim YH, Kim B, Hwang IG, Lee K, Woo IS, Ryoo H, Lee KH, Yi HG, Jang J, Kwon JH, Park K. Randomized phase III trial of gefitinib or pemetrexed as second-line treatment in patients with non-small cell lung cancer previously treated with platinum-based chemotherapy (KCSG-LU08-01). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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362
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Kang HJ, Ryu M, Kim K, Park YS, Kim WH, Im S, Park SH, Lee KH, Song H, Kang Y. Imatinib efficacy by tumor genotype in Asian patients with metastatic or recurrent gastrointestinal stromal tumors (GISTs): A retrospective study of Korean GIST Study Group (KGSG). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.10063] [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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363
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Ford E, Achanta P, Jang M, Song H, Quinones-Hinojosa A. 1515 poster LOCALIZED CT-GUIDED IRRADIATION INHIBITS NEUROGENESIS IN SPECIFIC REGIONS OF THE ADULT MOUSE BRAIN. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71637-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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364
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Eo J, Shin H, Kwon S, Song H, Murphy KM, Lim HJ. Complex ovarian defects lead to infertility in Etv5-/- female mice. Mol Hum Reprod 2011; 17:568-76. [DOI: 10.1093/molehr/gar021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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365
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McNeil F, Gelow J, Mudd J, Adler E, Song H, Kim A. 479 Limited Correlation between Cardiac Output and Displayed Device Flow in Patients with HeartMate II LVAS. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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366
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Rar A, Song H, Pharr G. Assessment of New Relation for the Elastic Compliance of a Film-Substrate System. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-695-l10.10.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTA new closed-form relation for the elastic compliance of a film-substrate system indented by a flat cylindrical punch is presented. The relation is an extension of the work of Gao at al. [1] modified to increase the applicable range of modulus mismatch between the film and substrate. The accuracy of the relation is assessed by comparison to finite element simulations, other approximate numerical solutions, and nanoindentation experiments performed on a fluorinated silicate glass (FSG) film on a silicon substrate. The benefits and limitations of the relation are discussed.
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367
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Wang J, Song H, Tang X, Yang Y, Vieira VJ, Niu Y, Ma Y. Effect of exercise training intensity on murine T-regulatory cells and vaccination response. Scand J Med Sci Sports 2011; 22:643-52. [PMID: 21410542 DOI: 10.1111/j.1600-0838.2010.01288.x] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
To understand the underlying mechanism(s) for the effect of exercise at different intensities on T cell and DNA vaccination responses, we treated mice in a training protocol with regular moderate-intensity exercise (MIE) or prolonged, exhaustive high-intensity exercise (HIE). After 6 weeks of training, splenocytes were isolated to evaluate cytokine expression and T-regulatory (Treg) cell proportion by RT-PCR and FACS, respectively. Another set of mice that completed the same training protocol were used to determine DNA vaccination responses. These mice were immunized three times with HBV DNA vaccine at 2-week intervals and euthanized on day 14 after the last immunization. Serum and splenocytes were isolated to determine humoral and cell-mediated immunity (CMI). Results showed that HIE increased anti-inflammatory cytokine expression and CD4(+) CD25(+) Treg cell proportion. Further, HIE decreased IFN-γ expression, T-lymphocyte proliferation, and antigen-specic cytotoxic response in HBV DNA vaccine-immunized mice. MIE did not change anti-inflammatory cytokine expression or CD4(+) CD25(+) Treg cell proportion but increased pro-inflammatory cytokine expression and augmented antigen-specific CMI. Thus, MIE lower the risk of cancer and infectious illness through enhancing the pro-inflammatory responses. By contrast, HIE might increase the risk of common infections, such as upper respiratory tract infection, due to an up-regulation of CD4(+) CD25(+) Treg cells and anti-inflammatory responses.
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368
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Fan Y, Liu Y, Oklu R, He N, Li P, Wu Q, Wicky S, Song H. Abstract No. 376: Balloon occlusion of the right main bronchus in an ovine model of massive pulmonary embolus extends life to allow emergent interventions. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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369
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Crisostomo V, Maynar M, Sun F, Song H, Usón J, Sanchez-Margallo F. Abstract No. 262: Drug-eluting stents for the management of benign prostatic hyperplasia: An experimental study in a canine model. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.289] [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] Open
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370
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Chen Z, Qiu S, Wang Y, Wang Y, Liu S, Wang Z, Du X, Wang L, Guo J, Wang Z, Liu N, Yuan J, Song H, Huang L. Coexistence of blaNDM-1 with the Prevalent blaOXA23 and blaIMP in Pan-drug Resistant Acinetobacter baumannii Isolates in China. Clin Infect Dis 2011; 52:692-3. [DOI: 10.1093/cid/ciq231] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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371
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Ryoo H, Bae S, Kim M, Lee KH, Song H, Chae Y, Lee W, Baek J. Phase II study of fixed-dose-rate infusion of gemcitabine and UFT combination chemotherapy in patients with advanced bile duct cancer: Daegu Gyeoungbuk Oncology Group. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
280 Background: This phase II study evaluated efficacy of fixed dose rate (FDR) infusion of gemcitabine (10mg/m2/min) and UFT combination in chemo-naïve patients with advanced bile duct cancer. Methods: This was an open-label, single-arm, multicenter, phase II study with a Simon two-stage minimax design. Patients received the FDR gemcitabine 1,000mg/m2 for 3 consecutive weeks and UFT 400 mg/m2 on days 1-21. The cycle was repeated every 28 days. The primary end point was Response Evaluation Criteria in Solid Tumors (RECIST) -defined objective response rate. Secondary end points included clinical benefit response (CBR), safety, progression-free survival (PFS), and overall survival (OS). Clinical characteristics including four single nucleotide polymorphisms in DNA repair genes (RecQ1, RAD54L, XRCC1, ATM) were evaluated whether these influence the overall survival. Results: Between December 2006 and February 2008, fifty-one patients were enrolled, with a median age of 58 years. The majority of patients (76%) had intra-hepatic disease. Fourteen patients (27%) had a RECIST investigator-assessed, partial response (PR); disease control rate (PR + stable disease) was 55%. CBR was 14% among 37 evaluable patients. Hematologic toxicity was main grade 3 or 4 treatment-related adverse events. Median PFS was 4.0 months (95% CI, 2.9 to 5.1 months). Median OS was 7.0 months (95% CI, 3.5 to 10.5 months). Intrahepatic disease, poor performance, and, XRCC1 R194W C/C type were predictive markers of poor overall survival. Conclusions: FDR gemcitabine and UFT demonstrated apparent activity in patients with advanced bile duct cancer. However, this activity did not translate to prolong survival. The location of disease, performance status, and, polymorphic variants of DNA repair genes may affect clinical outcome of patients with advanced bile duct cancer. No significant financial relationships to disclose.
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372
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Mayer G, Trejo R, Lara-Curzio E, Rodriguez M, Tran K, Song H, Ma WH. Lessons for New Classes of Inorganic/Organic Composites from the Spicules and Skeleton of the Sea Sponge Euplectella aspergillum. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-844-y4.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTStudies have been carried out on the structures and mechanical characteristics of an unusual family of sea sponges under the classification of Hexactinellida, genus Euplectella. The sponge spicules have been of interest to materials scientists because of their potentially important optical, coupled with mechanical, properties. The structures of the class Hexactinellida are characterized by a concentric ring appearance in the cross-section, which is a composite of hydrated silica, coupled with silicatein as a thin layer at the ring interfaces. The mechanical behavior and the toughness of the spicules have been examined with the aid of a special fiber testing method, coupled with scanning electrom microscopy (SEM) observations. It appears that there may be common mechanisms underlying toughness in rigid natural composites with high ratios of mineral/organic phase. In addition, novel pressurization tests of a portion of the sponge skeleton have provided information about the resilience of the skeleton, which resembles a selfsupporting glass winding of a cylindrical composite structure.
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373
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Zhang Y, Yang D, Yao S, Cao Y, Song H. HPLC Determination of Enantiomeric 2-Azabicyclo[2.2.1 ] hept-5-en-3-one on Chiral Stationary Phase. J Chromatogr Sci 2011. [DOI: 10.1093/chrsci/49.1.67] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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374
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Teng F, Zhu R, Zou C, Xue Y, Yang M, Song H, Liang J. Interaction between serum uric acid and triglycerides in relation to blood pressure. J Hum Hypertens 2010; 25:686-91. [DOI: 10.1038/jhh.2010.112] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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375
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Pierquet M, Craciunescu O, Steffey B, Song H, Oldham M. On the Feasibility of Verification of 3D Dosimetry Near Brachytherapy Sources Using PRESAGE/Optical-CT. ACTA ACUST UNITED AC 2010; 250:120911-120915. [PMID: 22235233 DOI: 10.1088/1742-6596/250/1/012091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE: The feasibility of using the PRESAGE/Optical-CT system for 3D dosimetry verification around a brachytherapy source is investigated. METHOD AND MATERIALS: Brachytherapy dose distributions were obtained by irradiation of cylindrical PRESAGE volumes 6cm in diameter by 8cm height with a GammaMed 12i Ir-192 HDR unit (Varian Medical Systems). A narrow channel on the central axis was created by setting a steel catheter in the Presage during manufacture, enabling measurements close to the source (~3mm). RESULTS: Comparison of dose line profiles shows good agreement between PRESAGE and verified calculated dose calculation, in both high and low dose regions. CONCLUSION: The PRESAGE/Optical-CT shows good potential in verification of 3D dose distributions around brachytherapy sources.
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