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Yang W, Qi Z, Fu Y, Gong P, Zhuang Y, Jia H, Yang H. 3.031 LOSS OF PINK1 FUNCTION PROMOTES AUTOPHAGY VIA PP2A DOWNREGULATION IN DOPAMINERGIC CELLS AND A MURINE MODEL. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70767-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Wu ZM, Yang H, Li M, Yeh CC, Schatz F, Lockwood CJ, Di W, Huang SJ. Pro-inflammatory cytokine-stimulated first trimester decidual cells enhance macrophage-induced apoptosis of extravillous trophoblasts. Placenta 2011; 33:188-94. [PMID: 22212249 DOI: 10.1016/j.placenta.2011.12.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 12/08/2011] [Accepted: 12/09/2011] [Indexed: 01/13/2023]
Abstract
OBJECTIVE As human blastocyst-derived extravillous trophoblasts (EVTs) invade the early decidua, they are positioned to interact with immune cells and resident decidual cells, and remodel spiral arteries into high capacity vessels that increase blood flow to the developing fetal-placental unit. Shallow EVT invasion elicits incomplete vascular transformation and reduces uteroplacental blood flow that presages adverse pregnancy outcomes. Excess macrophages in the decidua induce EVT apoptosis via tumor necrosis factor-alpha (TNF-α) secretion. Our previous observation that pro-inflammatory cytokines enhance neutrophil and macrophage activator granulocyte-macrophage colony-stimulating factor (GM-CSF) expression in first trimester decidual cells is now extended to include: (1) the specific macrophage activator M-CSF; (2) macrophage activation and subsequent enhancement of EVT apoptosis by both GM-CSF and M-CSF. STUDY DESIGN Quantitative reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay assessed M-CSF expression in first trimester decidual cells incubated with interleukin-1 beta (IL-1β) or TNF-α. Peripheral monocyte-derived macrophages pre-incubated with conditioned media from decidual cell cultures were co-cultured with a first trimester EVT cell line, HTR-8/SVneo cells. Macrophage activation was examined and EVT apoptosis evaluated by DNA fragmentation, caspase activation and cell membrane asymmetry. RESULTS IL-1β or TNF-α significantly enhanced M-CSF expression in first trimester decidual cells. The conditioned media from these cultures activates macrophages, which promote caspase 3/7-dependent EVT apoptosis with antibodies against GM-CSF or M-CSF blocking this effect. CONCLUSIONS Pro-inflammatory cytokines increases synthesis of M-CSF in first trimester decidual cells. Both GM-CSF and M-CSF activate macrophages, which initiate caspase-dependent EVT apoptosis.
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Dou J, Wang Y, Yu F, Yang H, Wang J, He X, Xu W, Chen J, Hu K. Protection against Mycobacterium tuberculosis challenge in mice by DNA vaccine Ag85A-ESAT-6-IL-21 priming and BCG boosting. Int J Immunogenet 2011; 39:183-90. [DOI: 10.1111/j.1744-313x.2011.01066.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Wang Z, Yang Y, Yang H, Capó-Aponte J, Tachado S, Wolosin J, Reinach P. NF-κB feedback control of JNK1 activation modulates TRPV1-induced increases in IL-6 and IL-8 release by human corneal epithelial cells. Mol Vis 2011; 17:3137-46. [PMID: 22171160 PMCID: PMC3235537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Accepted: 11/27/2011] [Indexed: 10/26/2022] Open
Abstract
PURPOSE The corneal wound healing response to an alkali burn results in dysregulated inflammation and opacity. Transient receptor potential vanilloid type1 (TRPV1) ion channel activation by such a stress contributes to this unfavorable outcome. Accordingly, we sought to identify potential drug targets for mitigating this response, in human corneal epithelial cells (HCEC). METHODS SV40-immmortalized HCEC were transduced with lentiviral vectors to establish stable c-Jun N-terminal kinase1 (JNK1), nuclear factor-κB1 (NF-κB1), and dual specificity phsophatase1 (DUSP1) shRNAmir sublines. Immunoblotting evaluated the expression of NF-κB1, DUSP1, protein kinase Cδ (PKCδ), and the phosphorylation status of cell signaling mediators. Enzyme-linked immunosorbent assay (ELISA) evaluated interleukin-6 (IL-6) and interleukin-8 (IL-8) release. RESULTS Capsaicin (CAP; a selective TRPV1 agonist), induced time-dependent activation of transforming growth factor-activated kinase 1 (TAK1) and mitogen-activated protein kinase (MAPK) cascades temporally followed by increased nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha (IκBα) phosphorylation, rises in both PKCδ protein levels and IL-6 and IL-8 release. All of these responses were blocked by the TAK1 inhibitor 5z-7-oxozeaenol (5z-OX). In the JNK1 subline, CAP failed to increase IL-6/8 release, but still stimulated NF-κB by 50%. In the NF-κB1 subline, these IL-6/8 responses were absent, JNK1 activation was attenuated and there was a concomitant increase in DUSP1 expression compared to the control. In the DUSP1 subline, JNK1 phosphorylation was enhanced and prolonged and accompanied by larger increases in IL-6/8 release. CONCLUSIONS TRPV1 induced increases in IL-6/IL-8 release occur through TAK1 activation of JNK1-dependent and JNK1-independent signaling pathways. Their joint activation is required for NF-κB to elicit sufficient positive feedback control of JNK1/2 phosphorylation to elicit increases in IL-6/8 release. Such regulation depends on NF-κB modulation of DUSP1 expression levels and associated changes in PKCδ protein levels.
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Yang H, Magpayo N, Rusek A, Chiang IH, Sivertz M, Held KD. Effects of Very Low Fluences of High-Energy Protons or Iron Ions on Irradiated and Bystander Cells. Radiat Res 2011; 176:695-705. [DOI: 10.1667/rr2674.1] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Seo JS, Jamieson K, Cosgrove V, Gwizdowski IS, Yang H, Sheehan DV, McElroy SL, Suppes T. Characteristics of responders and non-responders to risperidone monotherapy or placebo in co-occurring bipolar disorder and anxiety disorder. Eur Psychiatry 2011; 28:190-6. [PMID: 22130178 DOI: 10.1016/j.eurpsy.2011.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 08/12/2011] [Accepted: 08/13/2011] [Indexed: 10/27/2022] Open
Abstract
Clinical characteristics predicting response and remission to psychopharmacological treatment of bipolar disorder (BD) and co-occurring anxiety disorders have been understudied. We hypothesized that non-response to risperidone or placebo in individuals with co-occurring BD and anxiety symptoms would be associated with a more severe clinical course of BD, and certain demographic variables. This study was a secondary analysis of a randomized, double-blind, parallel, 8-week study comparing risperidone monotherapy and placebo in individuals with BD plus current panic disorder, current generalized anxiety disorder (GAD), or lifetime panic disorder (n=111) [31]. We compared clinical characteristics of responders (50% improvement on the Hamilton Anxiety Scale [HAM-A]) and non-responders as well as remitters (HAM-A<7) and non-remitters in risperidone treatment (n=54) and placebo (n=57) groups. For non-responders in the risperidone group, co-occurring lifetime panic disorder was significantly more common than for non-responders in the placebo group. Apart from this, no significant differences in course of illness or demographics were found either between or across groups for patients with BD and co-occurring anxiety symptoms receiving risperidone or placebo in this acute phase study.
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Macpherson AK, Kramer MS, Ducharme FM, Yang H, Bélanger FP. Doctor shopping before and after a visit to a paediatric emergency department. Paediatr Child Health 2011; 6:341-6. [PMID: 20084259 DOI: 10.1093/pch/6.6.341] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Use of multiple care providers is known to be associated with poor continuity of care. OBJECTIVES To estimate the prevalence of and identify risk factors for doctor shopping by parents of children with common acute illnesses seen in the emergency department (ED) of a children's hospital. SETTING ED at the Montreal Children's Hospital (MCH), Montreal, Quebec. METHODS Doctor shopping was defined as visiting three or more different care sites (the MCH ED, other EDs, outpatient clinics or private offices) for a single illness episode, including all visits occurring within successive 72 h periods up to a maximum of 15 days before and after an ED visit from April 1995 to March 1996. Logistic regression was used to compare characteristics of illness episodes with doctor shopping versus those without. RESULTS Of the total 40,150 visits during the study period, doctor shopping was observed in 18% of the visits. The risk of doctor shopping was positively associated with an initial visit at other EDs (odds ratio [OR] 9.08, 95% CI 7.16 to 11.52), outpatient clinics (OR 4.47, 95% CI 3.71 to 5.37) or private offices (OR 1.71, 95% CI 1.48 to 1.96) versus those who visited the MCH ED first. The risk did not differ according to whether a paediatrician versus a general practitioner saw the child during the initial visit (OR 0.99, 95% CI 0.86 to 1.15). Some diagnoses (the reference category was upper respiratory infection), including urinary tract infection (OR 3.31, 95% CI 2.58 to 4.23) and gastroenteritis (OR 1.59, 95% CI 1.35 to 1.88), were associated with an increased risk of doctor shopping, while asthma was associated with a reduced risk (OR 0.71, 95% CI 0.60 to 0.86). CONCLUSION Doctor shopping is common among parents of children with acute illnesses. Parents of children who were seen in the MCH ED first were less likely to doctor shop, perhaps because the parents were more confident about the advice and treatment received. Further research should investigate the underlying reasons for doctor shopping, eg, services other than an ED were not available and parents' perceptions of the quality of health services.
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Chen Z, Jiang H, Chen R, Feng S, Jin J, Bi Y, Yang H, Chen J. Survival time of cardiac allografts prolonged by isogeneic BMT in mice. Bone Marrow Transplant 2011; 47:1118-25. [PMID: 22056640 DOI: 10.1038/bmt.2011.215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To find an approach to prolong the survival time of cardiac allografts in a BALB/c-to-C57/BL6 heterotopic heart transplant model and to try to figure out related chemokines and cytokines, isogeneic and allogeneic BM cells were obtained from pregnant C57/BL6 (♀C57/BL6 × ♂BALB/c) and regular BALB/c mice and injected to the half lethally irradiated C57/BL6 mice 1 day before heart transplantation. Recipients were treated with CsA or phosphate-buffered saline for 7 days. Isogeneic BMT (iBMT) from pregnant C57/BL6 mice was observed to significantly prolong the survival of BALB/c allografts and reduce the lymphocyte infiltration. Allogeneic BMT (aBMT) and iBMT both exhibited signicantly less T-cell proliferation reactivity and the similar degree of chimerism. There was no significant difference in these groups of IFN-γ and IL-4 production. The level of chemokine MIG (CXCL9) dramatically decreased in aBMT and iBMT groups compared with the control group. But there were no significant differences between aBMT and iBMT group. IL-17 and RORγ(t) (receptor-related orphan receptor) production were downregulated in iBMT recipients. These results indicate that iBMT can prolong the survival of cardiac allografts. IL-17 production downregulated in iBMT recipients. This means that iBMT may have important therapeutic implications.
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An S, Ma D, Wei JF, Yang X, Yang HW, Yang H, Xu X, He S, Lai R. A novel allergen Tab y 1 with inhibitory activity of platelet aggregation from salivary glands of horseflies. Allergy 2011; 66:1420-7. [PMID: 21848516 DOI: 10.1111/j.1398-9995.2011.02683.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Horsefly sting causes allergic reactions in human body. However, our knowledge on horsefly allergens remains poor. OBJECTIVES To identify the novel horsefly allergens and characterize their properties. METHODS A native allergen protein Tab y 1 (apyrase) was purified from the salivary glands of the horsefly Tabanus yao Macquart by gel filtration and ion exchange chromatography. Its sequence was determined by Edman degradation and cDNA cloning. Its allergenicity was assessed by immunoblotting for specific IgE, basophil activation test, skin prick test (SPT), and competitive enzyme-linked immunosorbent assay (ELISA). RESULTS Tab y 1 showed a single diffusion band of 70 kDa on SDS-PAGE. Seventy percent (7/10) of patients with horsefly allergy tested positive to Tab y 1 in SPT; sera from 81% (30/37) of patients reacted to Tab y 1 on western blots. Purified Tab y 1 reduced approximately 42% sera IgE reactivity to horsefly salivary gland extract on a competitive ELISA. Tab y 1 upregulated the expression of CD63 and CCR3 on passively sensitized basophils by up to approximately 4.9-fold. Tab y 1 also showed enzymatic activity to hydrolyze ATP and ADP, and potent antiplatelet aggregation and antithrombotic activities. CONCLUSION The current work identified a novel major allergen of horsefly, Tab y 1, with antiplatelet aggregation and antithrombotic activities, which implicates Tab y 1 in helping horseflies suck host blood, meanwhile causing allergy in their human hosts.
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Bluml S, Panigrahy A, Laskov M, Dhall G, Nelson MD, Finlay JL, Gilles FH, Arita H, Kinoshita M, Kagawa N, Fujimoto Y, Hashimoto N, Yoshimine T, Kinoshita M, Arita H, Kagawa N, Fujimoto Y, Hashimoto N, Yoshimine T, Hamilton JD, Wang J, Levin VA, Hou P, Loghin ME, Gilbert MR, Leeds NE, deGroot JF, Puduvalli V, Jackson EF, Yung WKA, Kumar AJ, Ellingson BM, Cloughesy TF, Pope WB, Zaw T, Phillips H, Lalezari S, Nghiemphu PL, Ibrahim H, Motevalibashinaeini K, Lai A, Ellingson BM, Cloughesy TF, Zaw T, Harris R, Lalezari S, Nghiemphu PL, Motevalibashinaeini K, Lai A, Pope WB, Douw L, Van de Nieuwenhuijzen ME, Heimans JJ, Baayen JC, Stam CJ, Reijneveld JC, Juhasz C, Mittal S, Altinok D, Robinette NL, Muzik O, Chakraborty PK, Barger GR, Ellingson BM, Cloughesy TF, Zaw TM, Lalezari S, Nghiemphu PL, Motevalibashinaeini K, Lai A, Goldin J, Pope WB, Ellingson BM, Cloughesy TF, Harris R, Pope WB, Nghiemphu PL, Lai A, Zaw T, Chen W, Ahlman MA, Giglio P, Kaufmann TJ, Anderson SK, Jaeckle KA, Uhm JH, Northfelt DW, Flynn PJ, Buckner JC, Galanis E, Zalatimo O, Weston C, Allison D, Bota D, Kesari S, Glantz M, Sheehan J, Harbaugh RE, Chiba Y, Kinoshita M, Kagawa N, Fujimoto Y, Tsuboi A, Hatazawa J, Sugiyama H, Hashimoto N, Yoshimine T, Nariai T, Toyohara J, Tanaka Y, Inaji M, Aoyagi M, Yamamoto M, Ishiwara K, Ohno K, Jalilian L, Essock-Burns E, Cha S, Chang S, Prados M, Butowski N, Nelson S, Kawahara Y, Nakada M, Hayashi Y, Kai Y, Hayashi Y, Uchiyama N, Kuratsu JI, Hamada JI, Yeom K, Rosenberg J, Andre JB, Fisher PG, Edwards MS, Barnes PD, Partap S, Essock-Burns E, Jalilian L, Lupo JM, Crane JC, Cha S, Chang SM, Nelson SJ, Romanowski CA, Hoggard N, Jellinek DA, Clenton S, McKevitt F, Wharton S, Craven I, Buller A, Waddle C, Bigley J, Wilkinson ID, Metherall P, Eckel LJ, Keating GF, Wetjen NM, Giannini C, Wetmore C, Jain R, Narang J, Arbab AS, Schultz L, Scarpace L, Mikkelsen T, Babajni-Feremi A, Jain R, Poisson L, Narang J, Scarpace L, Gutman D, Jaffe C, Saltz J, Flanders A, Daniel B, Mikkelsen T, Zach L, Guez D, Last D, Daniels D, Hoffman C, Mardor Y, Guha-Thakurta N, Debnam JM, Kotsarini C, Wilkinson ID, Jellinek D, Griffiths PD, Khandanpour N, Hoggard N, Kotsarini C, Wilkinson ID, Jellinek D, Griffiths PD, Bambrough P, Hoggard N, Hamilton JD, Levin VA, Hou P, Prabhu S, Loghin ME, Gilbert MR, Bassett RL, Wang J, Yung WA, Jackson EF, Kumar AJ, Campen CJ, Soman S, Fisher PG, Edwards MS, Yeom KW, Vos MJ, Berkhof J, Postma TJ, Sanchez E, Sizoo EM, Heimans JJ, Lagerwaard FJ, Buter J, Noske DP, Reijneveld JC, Colen RR, Mahajan B, Jolesz FA, Zinn PO, Lupo JM, Molinaro A, Chang S, Lawton K, Cha S, Nelson SJ, Alexandru D, Bota D, Linskey ME, Chaumeil MM, Gini B, Yang H, Iwanami A, Subramanian S, Ozawa T, Read EJ, Pieper RO, Mischel P, James CD, Ronen SM, LaViolette PS, Cochran E, Al-Gizawiy M, Connelly JM, Malkin MG, Rand SD, Mueller WM, Schmainda KM, LaViolette PS, Cohen AD, Cochran E, Prah M, Hartman CJ, Connelly JM, Rand SD, Malkin MG, Mueller WM, Schmainda KM, Qiao XJ, He R, Brown M, Goldin J, Cloughesy T, Pope WB. RADIOLOGY. Neuro Oncol 2011; 13:iii136-iii144. [PMCID: PMC3222969 DOI: 10.1093/neuonc/nor162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023] Open
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Furnari F, Fenton T, Nathanson D, de Alberquerque CP, Kuga D, Wanami A, Dang J, Yang H, Tanaka K, Gao L, Oba-Shinjo S, Uno M, Inda MDM, Bachoo R, James CD, DePinho R, Vandenberg S, Zhou H, Marie S, Mischel P, Cavenee W, Szerlip N, Pedraza A, Huse J, Mikkelsen T, Brennan C, Szerlip N, Castellani RJ, Ivanova S, Gerzanich VV, Simard JM, Ito M, See W, Mukherjee J, Ohba S, Tan IL, Pieper RO, Lukiw WJ, Culicchia F, Pogue A, Bhattacharjee S, Zhao Y, Proescholdt MA, Merrill M, Storr EM, Lohmeier A, Brawanski A, Abraham S, Jensen R, Khatua S, Gopal U, Du J, He F, Golub T, Isaacs JS, Dietrich J, Kalogirou-Valtis Y, Ly I, Scadden D, Proschel C, Mayer-Proschel M, Rempel SA, Schultz CR, Golembieski W, Brodie C, Mathew LK, Skuli N, Mucaj V, Imtiyaz HZ, Venneti S, Lal P, Zhang Z, Davuluri RV, Koch C, Evans S, Simon MC, Ranganathan P, Clark P, Salamat S, Kuo JS, Kalejta RF, Bhattacharjee B, Renzette N, Moser RP, Kowalik TF, McFarland BC, Ma JY, Langford CP, Gillespie GY, Yu H, Zheng Y, Nozell SE, Huszar D, Benveniste EN, Lawrence JE, Cook NJ, Rovin RA, Winn RJ, Godlewski JA, Ogawa D, Bronisz A, Lawler S, Chiocca EA, Lee SX, Wong ET, Swanson KD, Liu KW, Feng H, Bachoo R, Kazlauskas A, Smith EM, Symes K, Hamilton RL, Nagane M, Nishikawa R, Hu B, Cheng SY, Silber J, Jacobsen A, Ozawa T, Harinath G, Brennan CW, Holland EC, Sander C, Huse JT, Sengupta R, Dubuc A, Ward S, Yang L, Northcott P, Kroll K, Taylor M, Wechsler-Reya R, Rubin J, Chu WT, Lee HT, Huang FJ, Aldape K, Yao J, Steeg PS, Lu Z, Xie K, Huang S, Sim H, Agudelo-Garcia PA, Hu B, Viapiano MS, Hu B, Agudelo-Garcia PA, Saldivar J, Sim H, Dolan C, Mora M, Nuovo G, Cole S, Viapiano MS, Stegh AH, Ryu MJ, Liu Y, Du J, Zhong X, Marwaha S, Li H, Wang J, Salamat S, Chang Q, Zhang J, Ng HK, Yang L, Poon WS, Zhou L, Pang JC, Chan A, Didier S, Kwiatkowska A, Ennis M, Fortin S, Rushing E, Eschbacher J, Tran N, Symons M, Roldan G, McIntyre JB, Easaw J, Magliocco A, Wykosky J, Cavenee W, Furnari F, Lu D, Mreich E, Chung S, Teo C, Wheeler H, McDonald KL, Lawn S, Forsyth P, Sonabend AM, Lei L, Kennedy B, Soderquist C, Guarnieri P, Leung R, Yun J, Sisti J, Castelli M, Bruce S, Bruce R, Ludwig T, Rosenfeld S, Bruce JN, Canoll P, Lamszus K, Schulte A, Gunther HS, Riethdorf S, Phillips HS, Westphal M, Siegal T, Zrihan D, Granit A, Lavon I, Singh M, Chandra J, Ogawa D, Nakashima H, Godlewski J, Chiocca AE, Kapoor GS, Poptani H, Ittyerah R, O'Rourke DM, Sadraei NH, Burgett M, Ahluwalia M, Tipps R, Khosla D, Weil R, Nowacki A, Prayson R, Shi T, Gladson C, Moeckel S, Meyer K, Bosserhoff A, Spang R, Leukel P, Vollmann A, Jachnick B, Stangl C, Proescholdt M, Bogdahn U, Hau P, Kaur G, Sun M, Kaur R, Bloch O, Jian B, Parsa AT, Hossain A, Shinojima N, Gumin J, Feng G, Lang FF, Li L, Yang CR, Chakraborty S, Hatanpaa K, Chauncey S, Jiwani A, Habib A, Nguyen T, Nakashima H, Chiocca EA, Munson J, Machaidze R, Kaluzova M, Bellamkonda R, Hadjipanayis CG, Zhang Y, McFarland B, Bredel M, Benveniste EN, Lee SH, Zerrouqi A, Khwaja F, Devi NS, Van Meir EG, Haseley A, Boone S, Wojton J, Yu L, Kaur B, Wojton JA, Naduparambil J, Denton N, Chakravarti A, Kaur B, Conrad CA, Wang X, Sheng X, Nilsson C, Marshall AG, Emmett MR, Hu Y, Mark L, Zhou YHZ, Dhruv H, McDonough W, Tran N, Armstrong B, Tuncali S, Eschbacher J, Kislin K, Berens M, Plas D, Gallo C, Stringer K, Kendler A, McPherson C, Castelli MA, Ellis JA, Assanah M, Bruce JN, Canoll P, Ogden A, Liang J, Piao Y, deGroot JF, Gordon N, Patel D, Chakravarti A, Palanichamy K, Hervey-Jumper S, Wang A, He X, Zhu T, Heth J, Muraszko K, Fan X, Nakashima H, Nguyen T, Chiocca EA, Liu WM, Huang P, Rani S, Stettner MR, Jerry S, Dai Q, Kappes J, Tipps R, Gladson CL, Chakravarty D, Pedraza A, Koul D, Alfred Yung WK, Brennan CW, Jensen SA, Luciano J, Calvert A, Nagpal V, Stegh A, Kang SH, Yu MO, Lee MG, Chi SG, Chung YG, Cooper MK, Valadez JG, Grover VK, Kouri FM, Chin L, Stegh AH, Ahluwalia MS, Khosla D, Weil RJ, McGraw M, Huang P, Prayson R, Nowacki A, Barnett GH, Gladson C, Kang C, Zou J, Lan F, Yue X, Shi Z, Zhang K, Han L, Pu P, Seaman BF, Tran ND, McDonough W, Dhruv H, Kislin K, Berens M, Battiste JD, Sirasanagandla S, Maher EA, Bachoo R, Sugiarto S, Persson A, Munoz EG, Waldhuber M, Vandenberg S, Stallcup W, Philips J, Berger MS, Bergers G, Weiss WA, Petritsch C. CELL BIOLOGY AND SIGNALING. Neuro Oncol 2011; 13:iii10-iii25. [PMCID: PMC3199169 DOI: 10.1093/neuonc/nor148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023] Open
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Xiong N, Jia M, Chen C, Xiong J, Zhang Z, Huang J, Hou L, Yang H, Cao X, Liang Z, Sun S, Lin Z, Wang T. Potential autophagy enhancers attenuate rotenone-induced toxicity in SH-SY5Y. Neuroscience 2011; 199:292-302. [PMID: 22056603 DOI: 10.1016/j.neuroscience.2011.10.031] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 10/16/2011] [Accepted: 10/17/2011] [Indexed: 12/11/2022]
Abstract
Recent studies have shown that autophagy upregulation may be a tractable therapeutic intervention for clearing the disease-causing proteins, including α-synuclein, ubiquitin, and other misfolded or aggregated proteins in Parkinson's disease (PD). In this study, we explored a novel pharmacotherapeutic approach to treating PD by utilizing potential autophagy enhancers valproic acid (VPA) and carbamazepine (CBZ). Pretreatment with VPA (3 mM) and CBZ (50 μM) along with positive control rapamycin (Rap, 0.2 μM) or lithium (LiCl, 10 mM) significantly enhanced cell viability, decreased rotenone-induced nuclear fragmentation and apoptosis, ameliorated the decrease in mitochondrial membrane potential, reduced reactive oxygen species generation in the human neuroblastoma SH-SY5Y cells. Specifically, the numbers of lysosomes and autophagic vacuolar organelles were increased and the microtubule-associated protein 1 light chain 3-II (LC3-II) expression was up-regulated by VPA, CBZ, Rap, and LiCl (53%, 31%, 72%, and 63%), suggesting that these agents activated autophagic pathways. Moreover, pretreatment with the autophagy inhibitor chloroquine (Chl, 10 μM) remarkably strengthened rotenone toxicity in these cells. Our results suggest that VPA and CBZ, the most commonly used anti-epilepsy and mood-stabilizing medications with low-risk and easy administration might be potential therapeutics for PD.
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Yang H, Nguyen TT, An BS, Choi KC, Jeung EB. Synergistic effects of parabens on the induction of calbindin-D9k gene expression act via a progesterone receptor-mediated pathway in GH3 cells. Hum Exp Toxicol 2011; 31:134-44. [DOI: 10.1177/0960327111422402] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Although the endocrine-disrupting bioactivity of parabens is weakly estrogenic (parabens are xenoestrogens), their combined synergistic effect is unknown. The aim of this study was to investigate the effects of methyl paraben (MP), ethyl paraben (EP), propyl paraben (PP), isopropyl paraben (IPP), butyl paraben (BP), and isobutyl paraben (IBP), either alone or in combination (MP + EP + PP + BP; PP + IPP; and BP + IBP) on the induction of the estrogenic biomarker gene, calbindin-D9k( CaBP-9k), in rat pituitary lactosomatotrophic GH3 cells. The expression of CaBP-9k mRNA and protein was analyzed using real-time PCR and Western blot analysis, respectively. After 24 h of treatment, a significant increase in CaBP-9k expression was observed. This was dependent upon the length of the paraben alkyl chains (shortest in MP and longest in IBP). Interestingly, the synergistic effects of these paraben combinations were observed at a dose (10−5 M) of these parabens, which induced the highest expression of CaBP-9k mRNA and protein. To investigate the involvement of estrogen receptors (ERs) and progesterone receptors (PRs), through which parabens exert their effects, the expression levels of ERα and PR-B were also examined. The expression of ERα mRNA and protein fluctuated after paraben treatment in GH3 cells, which was not significant. However, the expression level of ERα gene was induced when cotreated with 17β-estradiol (E2) and ICI 182, 780 (estrogen receptor antagonist). The different combinations of parabens induced the expression of the PR-B gene, which was abolished by cotreatment with ICI 182,780. The expression patterns of CaBP-9k and PR-B genes appeared to be similar in response to paraben treatments. This implied that CaBP-9k expression in GH3 cells may be induced by parabens via a PR-mediated pathway. Taken together, these results suggest that exposure to multiple parabens at low concentrations may increase their synergistic estrogenic activities in GH3 cells through a PR-mediated pathway.
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Benjamin RJ, Bianco C, Goldman M, Seed CR, Yang H, Lee J, Keller AJ, Wendel S, Biagini S, Murray J, Devine DV, Zhu Y, Turek P, Moftah FM, Kullaste R, Pillonel J, Danic B, Bigey F, Folléa G, Seifried E, Mueller MM, Lin CK, Makroo RN, Grazzini G, Pupella S, Velati C, Tadokoro K, Bravo Lindoro A, D’Artote González A, Giner VT, Flanagan P, Olaussen RW, Letowska M, Rosiek A, Poglod R, Zhiburt E, Mali P, Rozman P, Gulube S, Castro Izaguirre E, Ekermo B, Barnes SM, McLaughlin L, Eder AF, Panzer S, Reesink HW. Deferral of males who had sex with other males. Vox Sang 2011; 101:339-67. [DOI: 10.1111/j.1423-0410.2011.01489.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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1465
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Choi KC, An BS, Yang H, Jeung EB. Regulation and molecular mechanisms of calcium transport genes: do they play a role in calcium transport in the uterine endometrium? JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY : AN OFFICIAL JOURNAL OF THE POLISH PHYSIOLOGICAL SOCIETY 2011; 62:499-504. [PMID: 22204796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Accepted: 09/26/2011] [Indexed: 05/31/2023]
Abstract
Maintenance of calcium (Ca) balance in the uterus is critically important for many physiological functions, including smooth muscle contraction during embryo implantation. Ca transport genes, i.e., transient receptor potential cation channel subfamily V members 5/6 (TRPV5/6), calbindins, plasma membrane Ca(2+)-ATPase 1 (PMCA1), and NCX1/NCKX3, may play roles in the uterus for Ca transport and reproductive function. Although these Ca transport genes may have a role in Ca metabolism, their role(s) and molecular mechanisms require further elucidation. In this review, we highlight the expression and regulation of Ca transport genes in the uterus to clarify their potential role(s). Since Ca transport genes are abundantly expressed in reproductive tissues in a distinct manner, they may be involved in specific uterine functions including fetal implantation, Ca homeostasis, and endometrial cell production.
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1466
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Jin L, Gao W, Yang H, Lin C, Liu W. Enantiomeric Resolution of Five Chiral Pesticides on a Chiralpak IB-H Column by SFC. J Chromatogr Sci 2011; 49:739-43. [DOI: 10.1093/chrsci/49.9.739] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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1467
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Liu Z, Yang H. Comparison of the Minimally Invasive and Standard Medial Parapatellar Approaches for Total Knee Arthroplasty: Systematic Review and Meta-Analysis. J Int Med Res 2011; 39:1607-17. [PMID: 22117961 DOI: 10.1177/147323001103900503] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This systematic literature review analysed the efficacy of minimally invasive subvastus (SV) and midvastus (MV) approaches, compared with the standard medial parapatellar (MP) approach, for total knee arthroplasty. Fixed- and random-effect meta-analyses were performed to pool the results of primary studies assessing the mean difference of each clinical outcome. Length of hospital stay was significantly different between the MP and SV approaches, but not between the MP and MV approaches. Blood loss was significantly higher following MP compared with SV. The number of days to perform a straight-leg raise was significantly longer following MP than either MV or SV. In the first 6 months postsurgery, MV was associated with a better range of motion (ROM) than MP. No significant difference in ROM between MP and SV was apparent at 1 year postsurgery. Quadriceps muscle strength recovered significantly more slowly following MP compared with SV. Future studies should assess the efficacy of the quadriceps-sparing approach and compare minimally invasive approaches, assessing intrinsic postoperative differences.
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1468
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Li XJ, Yang H, Li GX, Zhang GH, Cheng J, Guan H, Yang GS. Transcriptome profile analysis of porcine adipose tissue by high-throughput sequencing. Anim Genet 2011; 43:144-52. [DOI: 10.1111/j.1365-2052.2011.02240.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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1469
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Yang H, Gors J, Meng M. Face-semblance leads to faster visual search and breaking interocular suppression. J Vis 2011. [DOI: 10.1167/11.11.661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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1470
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Turner K, Yang H, Franconeri S. Spatial relationship judgment requires selection of each object in turn, even when object identification does not. J Vis 2011. [DOI: 10.1167/11.11.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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1471
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Zou YS, Yang Y, Zhou YL, Li ZX, Yang H, He B, Bello I, Zhang WJ. Surface nanostructuring of boron-doped diamond films and their electrochemical performance. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2011; 11:7914-7919. [PMID: 22097505 DOI: 10.1166/jnn.2011.4742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Uniform and vertically aligned nanocone and nanopillar arrays were successfully constructed on heavily boron-doped nanocrysatlline diamond films by carrying out bias-assisted reactive ion etching in hydrogen/argon plasmas. The electrochemical properties of the nanostructured boron-doped diamond films were investigated by cyclic voltammetry using 1 mM [Fe(CN)6](3-/4-) as redox couple. Compared to the planar boron-doped nanocrystalline diamond film electrode, the surface nanostructuring of boron-doped diamond film electrodes demonstrate enhanced sensitivity due to their enlarged electro-active surface areas. The results indicated that boron-doped diamond nanocones and nanopillars are promising electrode materials which benefit to improve the efficiency, sensitivity and reproducibility of biomedical and chemical sensors.
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Li L, Yang H. First Report of Strawberry necrotic shock virus in China. PLANT DISEASE 2011; 95:1198. [PMID: 30732044 DOI: 10.1094/pdis-02-11-0121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Strawberry necrotic shock virus (SNSV) is an economically important viral pathogen that infects Fragaria and Rubus spp. SNSV was first identified in the 1950s and early studies indicated that SNSV was a strain of Tobacco streak virus (TSV). Recently, it was shown that SNSV was a distinct virus based on molecular characterization (2). Currently, SNSV is a tentative member of the Ilarvirus genus in the Bromoviridae family. In 2008, a small sampling survey for SNSV was done in Heilongjiang Province of China, and 15 strawberry samples were collected from symptomless strawberries in a home garden that had more than 5 years of strawberry cultivation history. Total nucleic acid was extracted from strawberry leaflets by modified cetyltrimethylammoniumbromide methods (3). Reverse transcription (RT)-PCR was operated with the published primer pair CPbeg F/CPend R (2). Amplified DNA fragments with the predicted size were obtained only in one strawberry sample, which was further cloned and sequenced. The sequence (GenBank Accession No. HQ830017) was closely related and highly homologous (89.7 to 98.5% identity) to that of viral isolates (GenBank Accession Nos. AY363228-AY363242) from Fragaria and Rubus spp. Phylogenetic analysis based on nucleotide sequence of the coat protein gene was done with the neighbor-joining method of MEGA 4.0 software. The result showed that all the isolates of SNSV fell into two distinct clades. The Chinese isolate formed one small clade with Japanese isolate 1291. The isolate was also transmitted to Chenopodium quinoa by mechanical inoculation in the greenhouse, and the symptom of chlorotic mottling could be found in C. quinoa and detected by RT-PCR. To determine whether the sample was infected by other strawberry viruses, RT-PCR assays with the published primer pairs SVBVdeta/SVBVdetb, SMoVdeta/SMoVdetb, and SMYEVdeta/SMYEVdetb were also performed for detection of Strawberry vein banding virus, Strawberry mottle virus, and Strawberry mild yellow edge virus using total nucleic acid extracted from the SNSV-positive sample as a template (1). The result indicated that it had been also infected by Strawberry mild yellow edge virus, although no visible symptoms were observed. To our knowledge, this is the first report of SNSV in strawberry in China. Additional work is needed to elucidate the biological characterization and significance of the finding. References: (1) J. R. Thompson et al. J. Virol. Methods 111:85, 2003. (2) I. E. Tzanetakis et al. Arch. Virol. 149:2001, 2004. (3) H. Y. Yang et al. Acta Hortic. 764:127, 2007.
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He S, Zhang Z, Zhang H, Wei J, Yang L, Yang H, Sun W, Zeng X, Yang P. Analysis of properties and proinflammatory functions of cockroach allergens Per a 1.01s. Scand J Immunol 2011; 74:288-295. [PMID: 21535080 DOI: 10.1111/j.1365-3083.2011.02571.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Cockroaches have been identified as one of the major indoor allergens inducing perennial rhinitis and asthma. Per a 1s are a group of the major allergens from American cockroach. Although Per a 1s are major allergens from American cockroach, factors contributing to the allergenicity of Per a 1s are still poorly defined. To investigate the effects of Per a 1s on the expression of PARs and the release of proinflammatory cytokines from mast cells. Per a 1.0101 and Per a 1.0104 were cloned from American cockroach and then expressed in Eschericia coli. The purified allergens were used to stimulate P815 mast cells, and the expression of protease-activated receptors (PARs) was determined by real-time RT-PCR and flow cytometry. The levels of IL-4 and IL-13 in culture media were detected with ELISA. Sera from 80 and 77.3% of cockroach allergy patients reacted to recombinant Per a (rPer a) 1.0101 and rPer a 1.0104, confirming they are major allergens. Both rPer a 1.0101 and rPer a 1.0104 had no enzymatic activity, but rPer a 1.0101 upregulated the expression of PAR-1 and PAR-2, and rPer a 1.0104 enhanced the expression of PAR-1 and PAR-4 proteins. Both recombinant allergens were able to increase the release of IL-4 and IL-13 from P815 mast cells. This is the first study aiming to investigate functions of group 1 allergens of American cockroach. rPer a 1.0101 and rPer a 1.0104 have the capacity to upregulate the expression of PARs and to enhance Th2 cytokine production in mast cells.
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Hartwell R, Leung V, Chavez-Munoz C, Nabai L, Yang H, Ko F, Ghahary A. A novel hydrogel-collagen composite improves functionality of an injectable extracellular matrix. Acta Biomater 2011; 7:3060-9. [PMID: 21569870 DOI: 10.1016/j.actbio.2011.04.024] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Revised: 03/13/2011] [Accepted: 04/25/2011] [Indexed: 01/07/2023]
Abstract
Cellular transplantation is now closer to becoming a practical clinical strategy to repair, regenerate or restore the function of skin, muscle, nerves and pancreatic islets. In this study we sought to develop a simple injectable collagen matrix that would preserve the normal cellular organization of skin cells. Three different scaffolds were created and compared: collagen-glycosaminoglycan (GAG) scaffolds, crosslinked collagen-GAG scaffolds without polyvinyl alcohol (PVA) and crosslinked collagen-GAG scaffolds containing PVA hydrogel. Importantly, all scaffolds were found to be non-cytotoxic. PVA-containing gels exhibited a higher tensile strength (P<0.05), faster fibril formation (P<0.001) and reduced collagenase digestion (P<0.01) compared with other gels. Free floating fibroblast-populated, PVA-borate scaffolds resisted contraction over a 10 day period (P<0.001). The fibroblast-populated scaffolds containing PVA demonstrated a 3-fold reduction in cellularity over 10 days compared with the control gels (P<0.001). Multicellular skin substitutes containing PVA-borate networks display a linear cellular organization, reduced cellularity and the formation of a keratinized epidermis that resembles normal skin. In conclusion, these data underscore the multifunctionality of a simple PVA-borate-collagen matrix as an injectable composite for tissue engineering or cell transplantation.
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Zhang C, Gao B, Chen LG, Meng QS, Yang H, Zhang R, Tao X, Gao HY, Liao Y, Dong ZC. Fabrication of silver tips for scanning tunneling microscope induced luminescence. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2011; 82:083101. [PMID: 21895227 DOI: 10.1063/1.3617456] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We describe a reliable fabrication procedure of silver tips for scanning tunneling microscope (STM) induced luminescence experiments. The tip was first etched electrochemically to yield a sharp cone shape using selected electrolyte solutions and then sputter cleaned in ultrahigh vacuum to remove surface oxidation. The tip status, in particular the tip induced plasmon mode and its emission intensity, can be further tuned through field emission and voltage pulse. The quality of silver tips thus fabricated not only offers atomically resolved STM imaging, but more importantly, also allows us to perform challenging "color" photon mapping with emission spectra taken at each pixel simultaneously during the STM scan under relatively small tunnel currents and relatively short exposure time.
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