51
|
Chen L, Kaßmann M, Marko L, Tepel M, Gollasch M. Abstract 509: Role of TRPV1 and TRPV4 Channels in the Renal Vasculature. Hypertension 2013. [DOI: 10.1161/hyp.62.suppl_1.a509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) and vanilloid 4 (TRPV4) cation channels have been recently identified to promote endothelium-dependent relaxation of small mesenteric arteries of mice, with calcium sparklets providing elementary calcium influx through single TRPV4 channels. The role of TRPV1 and TRPV4 in the renal vasculature is largely unknown. We hypothesized that TRPV1 and TRPV4 play an important role in endothelium-dependent vasodilation of renal blood vessels. We performed myography experiments on isolated renal arteries and perfused isolated kidneys of C57BL/6J mice. Isolated mesenteric arteries served as control vessels. The TRPV1 agonist capsaicin relaxed mesenteric arteries with an EC
50
of ~9 nM, but not large renal arteries (EC
50
>10 μM). This relaxation was inhibited by the TRPV1 antagonist capsazepine (10 μM). The capsaicin effect was absent in vessels of TRPV1 knock-out mice. Cytochrome P450 (CYP) 4A- and CYP4F-derived hydroxyeicosatetraenoic acid (20-HETE), which is a proinflammatory mediator of endotoxin-induced acute systemic inflammation, activated TRPV1 channels in patch clamp studies. The TRPV4 agonist GSK1016790A relaxed renal and mesenteric arteries with EC
50
of ~12 nM and 70 nM, respectively. These effects were inhibited by a specific TRPV4 antagonist, AB159908 (10 μM). Capsaicin
and GSK1016790A produced vascular dilation in isolated kidneys with EC
50
of ~11 nM and ~2 nM, respectively. The capsaicin effects were absent in kidneys of TRPV1 knock-out mice, whereas the effects of
GSK1016790A were also observed in TRPV1 knock-out mice. Our results demonstrate that TRPV4 channels are capable to promote endothelial relaxation in large and small renal arteries, whereas TRPV1 channels play a specific vasodilatory role in small arteries of the kidney. We suggest that specific activation of TRPV1 and TRPV4 may be a novel promising strategy for treatment of sepsis-associated renal vasoconstriction.
Collapse
|
52
|
Leeming DJ, Karsdal MA, Rasmussen LM, Scholze A, Tepel M. Association of systemic collagen type IV formation with survival among patients undergoing hemodialysis. PLoS One 2013; 8:e71050. [PMID: 23990924 PMCID: PMC3750054 DOI: 10.1371/journal.pone.0071050] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 06/24/2013] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE The 7S domain of collagen type IV (P4NP_7S) assessed in plasma represents systemic collagen type IV formation. The objective of the study was to investigate the association of systemic collagen type IV formation with survival among patients undergoing hemodialysis. METHODS We performed an observational cohort study of 371 hemodialysis patients. Plasma P4NP_7S was analyzed using a specific enzyme-linked immunosorbent assay detecting the amino-terminal propeptide of type IV procollagen. Association between categories of plasma P4NP_7S concentrations and survival was initially assessed by Kaplan-Meier analysis, then in an adjusted Cox model. RESULTS For hemodialysis patients in the highest category of systemic collagen type IV formation, i.e. plasma P4NP_7S concentrations more than 775 pg/L, an increased risk for death was observed (highest P4NP_7S category vs all other categories, hazard ratio, 1.934; 95% confidence interval, 1.139 to 3.285). Survival analysis showed an increased risk of death in the highest P4NP_7S category compared to the other categories (Chi square 6.903; P = 0.032). Median survival was only 105 days in the highest P4NP_7S category whereas it was 629 days in the medium category, and 905 days in the lowest category. Multivariable-adjusted Cox regression showed increased odds for death with higher age and higher P4NP_7S categories. Systemic collagen type IV formation was associated with plasma concentrations of the collagen IV degradation product C4M (Spearman r = 0.764; P<0.0001) confirming extracellular matrix turnover. CONCLUSION Among hemodialysis patients elevated systemic collagen type IV formation suggesting accelerating systemic fibrosis was associated with increased risk of death.
Collapse
|
53
|
Jankowski V, Tölle M, Tran TNA, van der Giet M, Schuchardt M, Lehmann K, Janke D, Flick B, Ortiz AA, Sanchez NMD, Tepel M, Zidek W, Jankowski J. Identification of a potent endothelium-derived angiogenic factor. PLoS One 2013; 8:e68575. [PMID: 23922657 PMCID: PMC3726690 DOI: 10.1371/journal.pone.0068575] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 05/29/2013] [Indexed: 11/18/2022] Open
Abstract
The secretion of angiogenic factors by vascular endothelial cells is one of the key mechanisms of angiogenesis. Here we report on the isolation of a new potent angiogenic factor, diuridine tetraphosphate (Up4U) from the secretome of human endothelial cells. The angiogenic effect of the endothelial secretome was partially reduced after incubation with alkaline phosphatase and abolished in the presence of suramin. In one fraction, purified to homogeneity by reversed phase and affinity chromatography, Up4U was identified by MALDI-LIFT-fragment-mass-spectrometry, enzymatic cleavage analysis and retention-time comparison. Beside a strong angiogenic effect on the yolk sac membrane and the developing rat embryo itself, Up4U increased the proliferation rate of endothelial cells and, in the presence of PDGF, of vascular smooth muscle cells. Up4U stimulated the migration rate of endothelial cells via P2Y2-receptors, increased the ability of endothelial cells to form capillary-like tubes and acts as a potent inducer of sprouting angiogenesis originating from gel-embedded EC spheroids. Endothelial cells released Up4U after stimulation with shear stress. Mean total plasma Up4U concentrations of healthy subjects (N=6) were sufficient to induce angiogenic and proliferative effects (1.34 ± 0.26 nmol L(-1)). In conclusion, Up4U is a novel strong human endothelium-derived angiogenic factor.
Collapse
MESH Headings
- Adult
- Angiogenesis Inducing Agents/chemistry
- Angiogenesis Inducing Agents/metabolism
- Angiogenesis Inducing Agents/pharmacology
- Animals
- Cell Movement/drug effects
- Chorioallantoic Membrane/drug effects
- Chorioallantoic Membrane/embryology
- Embryo, Mammalian/metabolism
- Endothelial Cells/cytology
- Endothelial Cells/drug effects
- Endothelial Cells/enzymology
- Endothelium, Vascular/cytology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/metabolism
- Humans
- In Vitro Techniques
- Mitogen-Activated Protein Kinases/metabolism
- Molecular Weight
- Muscle, Smooth, Vascular/cytology
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Phosphorylation/drug effects
- Platelet-Derived Growth Factor/pharmacology
- Rats
- Rats, Wistar
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
- Uracil Nucleotides/chemistry
- Uracil Nucleotides/metabolism
- Uracil Nucleotides/pharmacology
Collapse
|
54
|
Wong MMY, Thijssen S, Usvyat LA, Kotanko P, Maddux FW, Speer T, Rohrer L, Blyzszuk P, Krankel N, Zewinger S, Martin T, von Eckardstein A, Luscher T, Landmesser U, Fliser D, Prats M, Font R, Garcia C, Cabre C, Jariod M, Martinez Vea A, Costa E, Ribeiro S, do Sameiro-Faria M, Rocha-Pereira P, Kohlova M, Fernandes J, Reis F, Miranda V, Quintanilha A, Bronze-da-Rocha E, Belo L, Santos-Silva A, do Sameiro-Faria M, Kohlova M, Ribeiro S, Rocha-Pereira P, Fernandes J, Nascimento H, Reis F, Miranda V, Bronze-da-Rocha E, Quintanilha A, Belo L, Costa E, Santos-Silva A, Schepers E, Glorieux G, Van den Abeele T, Neirynck N, Vanholder R, Neirynck N, Glorieux G, Boelaert J, Liabeuf S, Massy Z, Vanholder R, Kaynar K, Kural BV, Ulusoy S, Cansiz M, Akcan B, Misir N, Yaman S, Kaya N, Dimas GG, Iliadis FS, Tegos TJ, Spiroglou SG, Pitsalidis CG, Karamouzis IM, Didaggelos TP, Adamidou AP, Savopoulos CG, Karamouzis MI, Orologas AG, Hatzitolios AI, Grekas DM, Flisinski M, Brymora A, Stefanska A, Strozecki P, Manitius J, Khalfina TN, Maksudova AN, Valeeva IK, Bantis C, Kouri NM, Bamichas G, Stangou M, Tsantekidou E, Natse T, Fazio MR, Basile G, Lucisano S, Montalto G, Valeria C, Donato V, Lupica R, Trimboli D, Aloisi C, Buemi M, Henze A, Raila J, Scholze A, Schweigert F, Tepel M, Nakamichi R, Prates E, Redublo Quinto BM, Zanella MT, Batista MC, Masajtis-Zagajewska A, Kurnatowska I, Wajdlich M, Nowicki M, Mennini F, Russo S, Marcellusi A, Quintaliani G, Andrulli S, Chiavenna C, Bigi MC, Tentori F, Crepaldi M, Corti MM, Dell'Oro C, Bacchini G, Limardo M, Pontoriero G, Williams C, Abbas SR, Zhu F, Flores-Gama C, Moskowitz J, Cartagena C, Carter M, Levin N, Kotanko P, de Oliveira RB, Liabeuf S, Okazaki H, Lenglet A, Desjardins L, Lemke HD, Valholder R, Choukroun G, Massy ZA. Nutrition / inflammation. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft111] [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] Open
|
55
|
Yildirim T, Yilmaz R, Altindal M, Turkmen E, Arici M, Altun B, Erdem Y, Guliyev O, Erkmen Uyar M, Tutal E, Bal Z, Sezer S, Erkmen Uyar M, Bal U, Bal Z, Tutal E, Say n B, Guliyev O, Erdemir B, Sezer S, O'Rourke-Potowki A, Gauge N, Penny H, Cronin A, Frame S, Goldsmith DJ, Yagan JA, Chandraker A, Velickovic Radovanovic RM, Catic Djordjevic A, Mitic B, Stefanovic N, Cvetkovic T, Serpieri N, Grosjean F, Sileno G, Torreggiani M, Esposito V, Mangione F, Abelli M, Castoldi F, Catucci D, Esposito C, Dal Canton A, Vatazin AV, Zulkarnaev AB, Borst C, Liu Y, Thoning J, Tepel M, Libetta C, Margiotta E, Borettaz I, Canevari M, Martinelli C, Lainu E, Abelli M, Meloni F, Sepe V, Dal Canton A, Miguel Costa R, Vasquez Martul E, Reboredo J, Rivera C, Simonato F, Tognarelli G, Daidola G, Gallo E, Burdese M, Cantaluppi V, Biancone L, Segoloni GP, Burdese M, Priora M, Messina M, Tamagnone M, Daidola G, Linsalata A, Lavacca A, Biancone L, Segoloni G, Zuidema W, Erdman R, van de Wetering J, Dor F, Roodnat J, Massey E, Timmerman L, IJzermans J, Weimar W, Goldsmith DJ, Sibley-Allen C, Hilton R, Moghul M, Burnapp L, Blake G, Koo TY, Park JS, Park HC, Kim GH, Lee CH, Oh IH, Kang CM, Hwang JK, Park SC, Choi BS, Chun HJ, Kim JI, Yang CW, Moon IS, Van Laecke S, Van Biesen W, Nagler EV, Taes Y, Peeters P, Vanholder R, Pruthi R, Ravanan R, Casula A, Harber M, Roderick P, Fogarty D, Cho A, Shin JH, Jang HR, Lee JE, Huh W, Kim DJK, Oh HY, Kim YG, Sancho Calabuig A, Gavela Martinez E, Kanter Berga J, Beltran Catalan S, Avila Bernabeu AI, Pallardo Mateu LM, Gonzalez E, Polanco N, Molina M, Gutierrez E, Garcia Puente L, Sevillano A, Morales E, Praga M, Andres A, Banasik M, Boratynska M, Koscielska-Kasprzak K, Bartoszek D, Myszka M, Zmonarski S, Nowakowska B, Wawrzyniak E, Halon A, Chudoba P, Klinger M, Rojas-Rivera J, Gonzalez E, Polanco N, Morales E, Andres A, Morales JM, Egido J, Praga M, Kopecky CM, Haidinger M, Kaltenecker C, Antlanger M, Marsche G, Holzer M, Kovarik J, Werzowa J, Hecking M, Saemann MD, Hwang JK, Kim JM, Koh ES, Chung BH, Park SC, Choi BS, Kim JI, Yang CW, Kim YS, Moon IS, Banasik M, Boratynska M, Koscielska-Kasprzak K, Krajewska M, Mazanowska O, Kaminska D, Bartoszek D, Zabinska M, Halon A, Malkiewicz B, Patrzalek D, Klinger M, Sulowicz J, Szostek S, Wojas-Pelc A, Ignacak E, Sulowicz W, Bellizzi V, Calella P, Cupisti A, Capitanini A, D'Alessandro C, Giannese D, Camocardi A, Conte G, Barsotti M, Bilancio G, Luciani R, Locsey L, Seres I, Kovacs D, Asztalos L, Paragh G, Wohlfahrtova M, Balaz P, Rokosny S, Wohlfahrt P, Bartonova A, Viklicky O, Kers J, Geskus RB, Meijer LJ, Bemelman F, ten Berge IJM, Florquin S, Hwang JC, Jiang MY, Lu YH, Weng SF, Testa A, Porto G, Sanguedolce M, Spoto B, Parlongo R, Pisano A, Enia G, Tripepi G, Zoccali C, Zuidema W, Mamode N, Lennerling A, Citterio F, Massey E, Van Assche K, Sterckx S, Frunza M, Jung H, Pascalev A, Johnson R, Loven C, Weimar W, Dor F, Soleymanian T, Keyvani H, Jazayeri SM, Fazeli Z, Ghamari S, Mahabadi M, Chegeni V, Najafi I, Ganji MR, Meys KME, Groothoff JW, Jager K, Schaefer F, Tonshoff B, Mota C, Cransberg K, van Stralen K, Gurluler E, Gures N, Alim A, Gurkan A, Cakir U, Berber I, Van Laecke S, Caluwe R, Nagler E, Van Biesen W, Peeters P, Van Vlem B, Vanholder R, Sulowicz J, Wojas-Pelc A, Ignacak E, Betkowska-Prokop A, Kuzniewski M, Krzanowski M, Sulowicz W, Masson I, Flamant M, Maillard N, Cavalier E, Moranne O, Alamartine E, Mariat C, Delanaye P, Canas Sole LL, Iglesias Alvarez E, Pastor MCMC, Moreno Flores FF, Abujder VV, Graterol FF, Bonet Sol JJ, Lauzurica Valdemoros RR, Yoshikawa M, Kitamura K, Nakai K, Goto S, Fujii H, Ishimura T, Takeda M, Fujisawa M, Nishi S, Prasad N, Gurjer D, Bhadauria D, Gupta A, Sharma R, Kaul A, Cybulla M, West M, Nicholls K, Torras J, Sunder-Plassmann G, Feriozzi S, Lo S, Wong PYH, Ip D, Wong CK, Chow VCC, Mo SKL, Molnar M, Ujszaszi A, Czira ME, Novak M, Mucsi I, Cruzado JM, Coelho S, Porta N, Bestard O, Melilli E, Taco O, Rivas I, Grinyo J, Pouteau LM, N'Guyen JM, Hami A, Hourmant M, Ghahramani N, Karparvar Z, Shadrou S, Ghahramani M, Fauvel JP, Hadj-Aissa A, Buron F, Morelon E, Ducher M, Heine C, Glander P, Neumayer HH, Budde K, Liefeldt L, Montero N, Webster AC, Royuela A, Zamora J, Crespo M, Pascual J, Adema AY, van Dorp WTH, Mallat MJK, de Fijter HW, Kim YS, Hong YA, Chung BH, Park CW, Yang CW, Kim YS, Choi BS, Suleymanlar G, Uzundurukan Z, Kapuagas A, Sencan I, Akdag R, Pascual J, Torio A, Mas V, Perez-Saez MJ, Mir M, Faura A, Montes-Ares O, Checa MD, Crespo M, Sawinski D, Trofe-Clark J, Sparkes T, Patel P, Goral S, Bloom R, Kim HJ, Park SJ, Kim TH, Kim YW, Kim YH, Kang SW, Abdel Halim M, Gheith O, Al-Otaibi T, Mosaad A, Awadeen W, Said T, Nair P, Nampoory MRN. Transplantation: clinical studies - A. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
56
|
Borras M, Roig J, Betriu A, Vilar A, Hernandez M, Martin M, Fernandez ED, Dounousi E, Kiatou V, Papagianni A, Zikou X, Pappas K, Pappas E, Tatsioni A, Tsakiris D, Siamopoulos KC, Kim JK, Kim Y, Kim SG, Kim HJ, Ahn SY, Chin HJ, Oh KH, Ahn C, Chae DW, Yazici R, Altintepe L, Bakdik S, Guney I, Arslan S, Topal M, Karagoz A, Stefan G, Mircescu G, Capusa C, Stancu S, Petrescu L, Alecu S, Nedelcu D, Bennett AHL, Pham H, Garrity M, Magdeleyns E, Vermeer C, Zhang M, Ni Z, Zhu M, Yan J, Mou S, Wang Q, Qian J, Saade A, Karavetian M, ElZein H, de Vries N, de Haseth DE, Lay Penne E, van Dam B, Bax WA, Bots ML, Grooteman MPC, van den Dorpel RA, Blankenstijn PJ, Nube MJ, Wee PM, Park JH, Jo YI, Lee JH, Cianfrone P, Comi N, Lucisano G, Piraina V, Talarico R, Fuiano G, Toyonaga M, Fukami K, Yamagishi SI, Kaida Y, Nakayama Y, Ando R, Obara N, Ueda S, Okuda S, Granatova J, Havrda M, Hruskova Z, Tesar V, Viklicky O, Rysava R, Rychlik I, Kratka K, Honsova E, Vernerova Z, Maluskova J, Vranova J, Bolkova M, Borecka K, Benakova H, Zima T, Lu KC, Yang HY, Su SL, Cao YH, Lv LL, Liu BC, Zeng R, Gao XF, Deng YY, Boelaert J, t' Kindt R, Glorieux G, Schepers E, Jorge L, Neirynck N, Lynen F, Sandra P, Sandra K, Vanholder R, Yamamoto T, Nameta M, Yoshida Y, Uhlen M, Shi Y, Tang J, Zhang J, An Y, Liao Y, Li Y, Tao Y, Wang L, Koibuchi K, Tanaka K, Aoki T, Miyagi M, Sakai K, Aikawa A, Martins AR, Branco PQ, Serra FM, Matias PJ, Lucas CP, Adragao T, Duarte J, Oliveira MM, Saraiva AM, Barata JD, Masola V, Zaza G, Granata S, Proglio M, Pontrelli P, Abaterusso C, Schena F, Gesualdo L, Gambaro G, Lupo A, Pruijm M, Hofmann L, Stuber M, Zweiacker C, Piskunowicz M, Muller ME, Vogt B, Burnier M, Togashi N, Yamashita T, Mita T, Ohnuma Y, Hasegawa T, Endo T, Tsuchida A, Ando T, Yoshida H, Miura T, Bevins A, Assi L, Ritchie J, Jesky M, Stringer S, Kalra P, Hutchison C, Harding S, Cockwell P, Viccica G, Cupisti A, Chiavistelli S, Borsari S, Pardi E, Centoni R, Fumagalli G, Cetani F, Marcocci C, Scully P, O'Flaherty D, Sankaralingam A, Hampson G, Goldsmith DJ, Pallet N, Chauvet S, Beaune P, Nochy D, Thervet E, Karras A, Bertho G, Gallyamov MG, Saginova EA, Severova MM, Krasnova TN, Kopylova AA, Cho E, Jo SK, Kim MG, Cho WY, kim HK, Trivin C, Metzger M, Boffa JJ, Vrtovsnik F, Houiller P, Haymann JP, Flamant M, Stengel B, Thervet E, Roozbeh J, Yavari V, Pakfetrat M, Zolghadr AA, Kim CS, Kim MJ, Kang YU, Choi JS, Bae EH, Ma SK, Kim SW, Lemoine S, Guebre-Egziabher F, Dubourg L, Hadj-Aissa A, Blumberg S, Katzir Z, Biro A, Cernes R, Barnea Z, Vasquez D, Gordillo R, Aller C, Fernandez B, Jabary N, Perez V, Mendiluce A, Bustamante J, Coca A, Goek ON, Sekula P, Prehn C, Meisinger C, Gieger C, Suhre K, Adamski J, Kastenmuller G, Kottgen A, Kuzniewski M, Fedak D, Dumnicka P, Solnica B, Kusnierz-Cabala B, Kapusta M, Sulowicz W, Drozdz R, Zawada AM, Rogacev KS, Hummel B, Fliser D, Geisel J, Heine GH, Kretschmer A, Volsek M, Krahn T, Kolkhof P, Kribben A, Bruck H, Koh ES, Chung S, Yoon HE, Park CW, Chang YS, Shin SJ, Deagostini MC, Vigotti FN, Ferraresi M, Consiglio V, Scognamiglio S, Moro I, Clari R, Daidola G, Versino E, Piccoli GB, Mammadrahim Agayev M, Mehrali Mammadova I, Qarib Ismayilova S, Anguiano L, Riera M, Pascual J, Barrios C, Betriu A, Valdivielso JM, Fernandez E, Soler MJ, Tsarpali V, Liakopoulos V, Panagopoulou E, Kapoukranidou D, Spaia S, Kostopoulou M, Michalaki A, Nikitidou O, Dombros N, Zhu F, Abba S, Flores-Gama C, Williams C, Cartagena C, Carter M, Kotanko P, Levin NW, Kolesnyk M, Stepanova N, Driyanska V, Stashevska N, Kundin V, Shifris I, Dudar I, Zaporozhets O, Keda T, Ishchenko M, Khil M, Choe JY, Nam SA, Kim J, Cha JH, Gliga ML, Irimescu CG, Caldararu CD, Gliga MG, Toma LV, Gomotarceanu A, Park Y, Kim Y, Jeon J, Kwon SK, Kim SJ, Kim SM, Kim HY, Montero N, Soler MJ, Barrios C, Marquez E, Berrada A, Arias C, Prada JA, Orfila MA, Mojal S, Vilaplana C, Pascual J, Vigotti FN, Attini R, Parisi S, Fassio F, Deagostini MC, Ghiotto S, Ferraresi M, Clari R, Biolcati M, Todros T, Piccoli GB, Jin K, Vaziri ND, Tramonti G, Romiti N, Chieli E, Maksudova AN, Khusnutdinova LA, Tang J, Shi Y, Zhang J, Li Y, An Y, Tao Y, Wang L, Reque JE, Quiroga B, Lopez JM, Verdallez UG, Garcia de Vinuesa M, Goicoechea M, Nayara PG, Arroyo DR, Luno J, Tanaka H, Flores-Gama C, Abbas SR, Williams C, Cartagena C, Carter M, Thijssen S, Kotanko P, Levin NW, Zhu F, Berthoux FC, Azzouz L, Afiani A, Ziane A, Mariat C, Fournier H, Kusztal M, Dzierzek P, Witkowski G, Nurzynski M, Golebiowski T, Weyde W, Klinger M, Altiparmak MR, Seyahi N, Trabulus S, Bolayirli M, Andican ZG, Suleymanlar G, Serdengecti K, Niculae A, Checherita IA, Neagoe DN, Ciocalteu A, Seiler S, Rogacev KS, Pickering JW, Emrich I, Fliser D, Heine G, Bargnoux AS, Obiols J, Kuster N, Fessler P, Badiou S, Dupuy AM, Ribstein J, Cristol JP, Yanagisawa N, Ando M, Ajisawa A, Tsuchiya K, Nitta K, Bouquegneau A, Cavalier E, Krzesinski JM, Delanaye P, Tominaga N, Shibagaki Y, Kida K, Miyake F, Kimura K, Ayvazyan A, Rameev V, Kozlovskaya L, Simonyan A, Scholze A, Marckmann P, Tepel M, Rasmussen LM, Hara M, Ando M, Tsuchiya K, Nitta K, Kanai H, Harada K, Tamura Y, Kawai Y, Al-Jebouri MM, Madash SA, Leonidovna Berezinets O, Nicolaevich Rossolovskiy A. Lab methods / biomarkers. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft108] [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] Open
|
57
|
Tsuchiya K, Shiohira S, Sugiura H, Suzuki M, Okano K, Nitta K, Kaesler N, Immendorf S, Ouyang C, Carmeliet P, Floege J, Kruger T, Schlieper G, Georgescu A, Kalucka J, Olbrich S, Baumgartl J, Hackenbeck T, Eckardt KU, Weidemann A, Chmielewski S, Olejnik A, Sikorski K, Heemann U, Wesoly J, Bluyssen H, Baumann M, Mekahli D, Decuypere JP, Missiaen L, Levtchenko E, De Smedt H, Stasi A, Castellano G, Gigante M, Intini A, Pontrelli P, Divella C, Curci C, Grandaliano G, Gesualdo L, Vizza D, Perri A, Lofaro D, Toteda P, Lupinacci S, Leone F, Gigliotti P, Papalia T, Bonofiglio R, Vatazin AV, Astakhov PV, Zulkarnaev AB, Parodi E, Verzola D, D'Amato E, Viazzi F, Gonnella A, Garneri D, Pontremoli R, Garibotto G, Chen TH, Chen CH, Chen YC, Sue YM, Cheng CY, Guiying L, Ying L, Pozzoli S, Lino M, Delli Carpini S, Ferrandi M, Zerbini G, Simonini M, Zagato L, Molinari I, Citterio L, Manunta P, Feng X, Pan X, Wang W, Chen N, Chen YX, Wang WM, Chen N, Tanaka S, Yano S, Sugimoto T, Noh H, Yu MR, Kim HJ, Woo SA, Cho YJ, Kwon SH, Jeon JS, Han DC, Shimizu H, Yisireyili M, Nishijima F, Niwa T, Koh ES, Chung S, Kim SJ, Kim SJ, Yoon HE, Park CW, Chang YS, Shin SJ, Seong EY, Rhee H, Shin MJ, Yang BY, Jung YS, Lee DW, Lee SB, Kwak IS, Kim IY, Sancho-Martinez SM, Prieto-Garcia L, Lopez-Hernandez FJ, Lopez-Novoa JM, Bae EH, Choi HS, Joo SY, Kim IJ, Kim CS, Choi JS, Ma SK, Lee J, Kim SW, Humanes B, Sonia C, Jado J, Mojena M, Lara J, Alvarez-Sala L, Tejedor A, Lazaro A, Wada Y, Iyoda M, Matsumoto K, Shindo-Hirai Y, Kuno Y, Yamamoto Y, Suzuki T, Shibata T, Akizawa T, Lee DW, Kwak IS, Lee SB, Seong EY, Faubel S, Edelstein CL, Cano Penalver JL, de Frutos Garcia S, Griera Merino M, Luengo Rodriguez A, Garcia Jerez A, Bohorquez Magro L, Medrano D, Calleros Basilio L, Rodriguez Puyol M, Prieto-Garcia L, Sancho-Martinez SM, Lopez-Hernandez FJ, Lopez-Novoa JM, Thilo F, Liu Y, Tepel M, Hsu HH, Chen KH, Hung CC, Yang CW, Endlich N, Lin JL, Pavenstadt H, Rodrigues Diez RR, Mezzano S, Ruiz-Ortega M, Rodrigues Diez R, Lavoz C, Nakayama Y, Fukami K, Yamagishi SI, Obara N, Yokoro M, Ando R, Kaida Y, Toyonaga M, Kaifu K, Takeuchi M, Ueda S, Okuda S, Daenen K, Hoylaerts MF, Bammens B, Liu J, Zhong F, Dai Q, Xu L, Wang W, Chen N, Zaravinos A, Deltas CC. Cell signalling. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
58
|
Kaßmann M, Harteneck C, Zhu Z, Nürnberg B, Tepel M, Gollasch M. Transient receptor potential vanilloid 1 (TRPV1), TRPV4, and the kidney. Acta Physiol (Oxf) 2013; 207:546-64. [PMID: 23253200 DOI: 10.1111/apha.12051] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 11/15/2012] [Accepted: 12/11/2012] [Indexed: 12/13/2022]
Abstract
Recent preclinical data indicate that activators of transient receptor potential channels of the vanilloid receptor subtype 1 (TRPV1) may improve the outcome of ischaemic acute kidney injury (AKI). The underlying mechanisms are unclear, but may involve TRPV1 channels in dorsal root ganglion neurones that innervate the kidney. Recent data identified TRPV4, together with TRPV1, to serve as major calcium influx channels in endothelial cells. In these cells, gating of individual TRPV4 channels within a four-channel cluster provides elementary calcium influx (calcium sparklets) to open calcium-activated potassium channels and promote vasodilation. The TRPV receptors can also form heteromers that exhibit unique conductance and gating properties, further increasing their spatio-functional diversity. This review summarizes data on electrophysiological properties of TRPV1/4 and their modulation by endogenous channel agonists such as 20-HETE, phospholipase C and phosphatidylinositide 3-kinase (PI3 kinase). We review important roles of TRPV1 and TRPV4 in kidney physiology and renal ischaemia reperfusion injury; further studies are warranted to address renoprotective mechanism of vanilloid receptors in ischaemic AKI including the role of the capsaicin receptor TRPV1 in primary sensory nerves and/or endothelium. Particular attention should be paid to understand the kidneys' ability to respond to ischaemic stimuli after catheter-based renal denervation therapy in man, whereas the discovery of novel pharmacological TRPV modulators may be a successful strategy for better treatment of acute or chronic kidney failure.
Collapse
|
59
|
Thoning J, Liu Y, Bistrup C, Thomassen A, Borst C, Marcussen N, Tepel M. Transmission of angiosarcomas from a common multiorgan donor to four transplant recipients. Am J Transplant 2013; 13:167-73. [PMID: 23094759 DOI: 10.1111/j.1600-6143.2012.04301.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 08/30/2012] [Accepted: 08/30/2012] [Indexed: 01/25/2023]
Abstract
We describe the donor tumor transmission of metastatic angiosarcomas to four transplant recipients through transplantation of deceased-donor organs, i.e. kidneys, lung and liver, from an apparently unaffected common female multiorgan donor. Fluorescent in situ hybridization of angiosarcoma cells confirmed that the tumor was of female donor's origin in male kidney recipients. Recent literature associated increased urokinase-plasminogen-activator-receptor (uPAR) and plasma soluble urokinase-plasminogen-activator-receptor (suPAR) levels with metastatic malignancies. Now we found that, compared to baseline levels, both deceased-donor kidney recipients showed increased uPAR transcripts in mononuclear cells as well as increased plasma suPAR levels after the diagnosis of metastatic angiosarcomas, i.e. 4 months after donor tumor transmission. These results show an association of uPAR/suPAR in donor tumor transmission of metastatic angiosarcomas in humans.
Collapse
|
60
|
Hocher B, Oberthür D, Slowinski T, Querfeld U, Schaefer F, Doyon A, Tepel M, Roth HJ, Grön HJ, Reichetzeder C, Betzel C, Armbruster FP. Modeling of Oxidized PTH (oxPTH) and Non-oxidized PTH (n-oxPTH) Receptor Binding and Relationship of Oxidized to Non-Oxidized PTH in Children with Chronic Renal Failure, Adult Patients on Hemodialysis and Kidney Transplant Recipients. ACTA ACUST UNITED AC 2013; 37:240-51. [DOI: 10.1159/000350149] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2013] [Indexed: 11/19/2022]
|
61
|
Winther SO, Thiesson HC, Poulsen LN, Chehri M, Agerskov H, Tepel M. The renal arterial resistive index and stage of chronic kidney disease in patients with renal allograft. PLoS One 2012; 7:e51772. [PMID: 23272164 PMCID: PMC3522700 DOI: 10.1371/journal.pone.0051772] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 11/07/2012] [Indexed: 11/24/2022] Open
Abstract
Objective The study investigated the optimal threshold value of renal arterial resistive index as assessed by Doppler ultrasonography determining chronic kidney disease stage 4 or higher in patients with renal allograft. Methods In a cross-sectional study the renal arterial resistive index were obtained in interlobar arteries by Doppler ultrasonography in 78 patients with renal allograft. The stage of chronic kidney disease was determined by the estimated glomerular filtration rate equation. Results The median renal arterial resistive index was 0.61 (interquartile range, 0.56 to 0.66). We observed a significant association between renal arterial resistive index above the upper quartile and chronic kidney disease stage 4 or higher (relative risk, 4.64; 95% confidence interval, 1.71 to 12.55; p = 0.003 by Fisher’s exact test). Multivariate logistic regression analysis showed that renal arterial resistive indices (p = 0.02) and time since transplantation (p = 0.04), but not age, gender, or blood pressure were significantly associated with chronic kidney disease stage 4 or higher. Conclusion A renal arterial resistive index higher than 0.66 may determine the threshold value of chronic kidney disease stage 4 or higher in patients with renal allograft.
Collapse
|
62
|
Borst C, Liu Y, Tepel M. Granzyme B Transcripts Control Short Term Graft Function after Kidney Transplantation. Transplantation 2012. [DOI: 10.1097/00007890-201211271-02034] [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]
|
63
|
Thilo F, Vorderwülbecke BJ, Marki A, Krueger K, Liu Y, Baumunk D, Zakrzewicz A, Tepel M. Pulsatile Atheroprone Shear Stress Affects the Expression of Transient Receptor Potential Channels in Human Endothelial Cells. Hypertension 2012; 59:1232-40. [DOI: 10.1161/hypertensionaha.111.183608] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
64
|
Usvyat LA, Raimann J, Thijssen S, van der Sande FM, Kooman J, Levin NW, Kotanko P, Von Gersdorff G, Schaller M, Bayh I, Etter M, Grassmann A, Guinsburg A, Kooman J, Lam M, Marcelli D, Marelli C, Scatizzi L, Tashman A, Thijssen S, Toffelmire T, Usvyat L, Van der Sande F, Wang Y, Levin NW, Barth C, Kotanko P, Moffitt T, Moffitt T, Hariton F, Devlin M, Garrett P, Hannon-Fletcher M, Ekramzadeh M, Sohrabi Z, Salehi M, Fallahzadeh MK, Ayatollahi M, Geramizadeh B, Hassanzadeh J, Sagheb MM, Beberashvili I, Beberashvili I, Sinuani I, Azar A, Kadoshi H, Shapiro G, Feldman L, Averbukh Z, Weissgarten J, Abe Y, Watanabe M, Ito K, Sasatomi Y, Ogahara S, Nakashima H, Saito T, Witt S, Kunze R, Guth HJ, Skarabis H, Kunze R, Vienken J, Nowak P, Wilk R, Mamelka B, Prymont-Przyminska A, Zwolinska A, Sarniak A, Wlodarczyk A, Rysz J, Nowak D, Trajceska L, Dzekova-Vidimliski P, Gelev S, Arsov S, Sikole A, Sonikian M, Dona A, Skarakis I, Metaxaki P, Chiotis C, Papoutsis I, Karaitianou A, Spiliopoulou C, Marcelli D, Tashman A, Guinsburg A, Grassmann A, Barth C, Marelli C, Van der Sande FM, Von Gersdorff G, Bayh I, Kooman J, Scatizzi L, Lam M, Schaller M, Etter M, Thijssen S, Toffelmire T, Wang Y, Usvyat LA, Kotanko P, Levin NW, Teta D, Teta D, Tappy L, Theumann N, Halabi G, Gauthier T, Mathieu C, Tremblay S, Coti P, Burnier M, Zanchi A, Martinez Vea A, Cabre C, Villa D, Munoz M, Vives JP, Arruche M, Soler J, Compte MT, Aguilera J, Romeu M, Giralt M, Barril G, Anaya S, Vozmediano C, Celayeta A, Novillo R, Bernal V, Beiret I, Huarte E, Martin J, Santana H, Torres G, Sousa F, Sanchez R, Lopez-Montes A, Tornero F, Uson J, Pousa M, Giorgi M, Rdez Cubillo B, Malhotra R, Malhotra R, Usvyat L, Abbas SR, Thjissen S, Carter M, Etter M, Tashman A, Guinsburg A, Grassmann A, Barth C, Marelli C, Van der Sande F, von Gersdorff G, Bayh I, Kooman J, Scatizzi L, Lam M, Schaller M, Toffelmire T, Wang Y, Marcelli D, Levin N, Kotanko P, Jens R, Tepel M, Katharina E, Andrea H, Simone F, Florian S, Slusanschi O, Garneata L, Moraru R, Preoteasa E, Barbulescu C, Santimbrean C, Klein C, Dragomir D, Mircescu G, Idorn T, Knop F, Holst JJ, Hornum M, Feldt-Rasmussen B, Son YK, An WS, Kim SE, Kim KH, Garneata L, Slusanschi O, Preoteasa E, Barbulescu C, Santimbrean C, Klein C, Mircescu G, Borrelli S, Minutolo R, De Nicola L, Conte G, De Simone W, Zito B, Guastaferro P, Nigro F, Bassi A, Leone L, Credendino O, Genualdo R, Capuano M, Iulianiello G, Auricchio MR, Sezer S, Bal Z, Tutal E, Erkmen Uyar M, Ozdemir Acar FN, Ribeiro S, Faria MS, Melo F, Sereno J, Freitas I, Mendonca M, Nascimento H, Fernandes J, Rocha-Pereira P, Miranda V, Mendonca D, Quintanilha A, Belo L, Costa E, Reis F, Santos-Silva A, Valtuille R, Casos ME, Fernandez EA. Nutrition, inflammation and oxidative stress - CKD 5D. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
65
|
Cerini C, Gondouin B, Dou L, Duval-Sabatier A, Brunet P, Dignat- George F, Burtey S, Okano K, Okano K, Iwasaki T, Jinnai H, Hibi A, Miwa N, Kimata N, Nitta K, Akiba T, Dolley-Hitze T, Verhoest G, Jouan F, Arlot-Bonnemains Y, Lavenu A, Belaud-Rotureau MA, Rioux-Leclercq N, Vigneau C, Cox SN, Sallustio F, Serino G, Loverre A, Pesce F, Gigante M, Zaza G, Stifanelli P, Ancona N, Schena FP, Marc P, Jacques T, Green JM, Mortensen RB, Verma R, Leu K, Schatz PJ, Wojchowski DM, Ihoriya C, Satoh M, Sasaki T, Kashihara N, Jung YJ, Kang KP, Lee AS, Lee JE, Lee S, Park SK, Kim W, Kang KP, Florian T, Tepel M, Ying L, Katharina K, Nora F, Antje W, Alexandra S, Chiu YT, Wu MJ, Liu ZH, Liang Y, Zheng CX, Chen ZH, Zeng CH, Ranzinger J, Rustom A, Kihm L, Heide D, Scheurich P, Zeier M, Schwenger V, Liu J, Liu J, Zhong F, Xu L, Zhou Q, Hao X, Wang W, Chen N, Zhong F, Zhong F, Liu X, Zhou Q, Hao X, Lu Y, Guo S, Wang W, Lin D, Chen N, Vilasi A, Deplano S, Deplano S, Cutillas P, Unwin R, Tam FWK, Medrano-Andres D, Lopez-Martinez V, Martinez-Miguel P, Cano JL, Arribas I, Rodiguez-Puyol M, Lopez-Ongil S, Kadoya H, Nagasu H, Satoh M, Sasaki T, Kashihara N, Lindeberg E, Grundstrom G, Alexandra S, Tepel M, Katharina K, Alexandra M, Ghosh CC, David S, Mukherjee A, John SG, Mcintyre CW, Haller H, Parikh SM, Troyano N, Del Nogal M, Olmos G, Mora I, DE Frutos S, Rodriguez-Puyol M, Ruiz MP, Rothe H, Rothe H, Shapiro W, Ketteler M, Ramakrishnan SK, Loupy A, Houillier P, Guilhermino Pereira L, Boim M, Aragao D, Casarini D, Jin Y, Jin Y, Chen N, Moon JY, Kim YG, Lee SH, Lee TW, Ihm CG, Kim EY, Lee HJ, Wi JG, Jeong KH, Ruan XZ, LI LC, Varghese Z, Chen JB, Lee CT, Moorhead J, Dou L, Gondouin B, Cerini C, Poitevin S, Brunet P, Dignat-George F, Stephane B, Bonanni A, Verzola D, Maggi D, Brunori G, Sofia A, Mannucci I, Maffioli S, Salani B, D'amato E, Saffioti S, Laudon A, Cordera R, Garibotto G, Maquigussa E, Boim M, Arnoni C, Guilhermino Pereira L. Cell signalling / Pathophysiology. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
66
|
Rayego-Mateos S, Rodrigues-Diez R, Rodrigues-Diez RR, Lavoz-Barria C, Alique M, Mas S, Pato J, Keri G, Egido J, Ortiz A, Ruiz-Ortega M, Ying L, Tepel M, Frank E, Florian T, Gregor T, Boye J, Maik G, Teng B, Gu C, Haller H, Sever S, Schiffer M, Worthmann K, Leitges M, Dittrich-Breiholz O, Kracht M, Haller H, Schiffer M, Peired A, Angelotti ML, Ronconi E, Lazzeri E, Sisti A, Lasagni L, Romagnani P. Mechanisms and targets of glomerular damage. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
67
|
Zhao Z, Ni Y, Chen J, Zhong J, Yu H, Xu X, He H, Yan Z, Scholze A, Liu D, Zhu Z, Tepel M. Increased migration of monocytes in essential hypertension is associated with increased transient receptor potential channel canonical type 3 channels. PLoS One 2012; 7:e32628. [PMID: 22438881 PMCID: PMC3306381 DOI: 10.1371/journal.pone.0032628] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 02/01/2012] [Indexed: 02/06/2023] Open
Abstract
Increased transient receptor potential canonical type 3 (TRPC3) channels have been observed in patients with essential hypertension. In the present study we tested the hypothesis that increased monocyte migration is associated with increased TRPC3 expression. Monocyte migration assay was performed in a microchemotaxis chamber using chemoattractants formylated peptide Met-Leu-Phe (fMLP) and tumor necrosis factor-α (TNF-α). Proteins were identified by immunoblotting and quantitative in-cell Western assay. The effects of TRP channel-inhibitor 2–aminoethoxydiphenylborane (2-APB) and small interfering RNA knockdown of TRPC3 were investigated. We observed an increased fMLP-induced migration of monocytes from hypertensive patients compared with normotensive control subjects (246±14% vs 151±10%). The TNF-α-induced migration of monocytes in patients with essential hypertension was also significantly increased compared to normotensive control subjects (221±20% vs 138±18%). In the presence of 2-APB or after siRNA knockdown of TRPC3 the fMLP-induced monocyte migration was significantly blocked. The fMLP-induced changes of cytosolic calcium were significantly increased in monocytes from hypertensive patients compared to normotensive control subjects. The fMLP-induced monocyte migration was significantly reduced in the presence of inhibitors of tyrosine kinase and phosphoinositide 3-kinase. We conclude that increased monocyte migration in patients with essential hypertension is associated with increased TRPC3 channels.
Collapse
|
68
|
Thilo F, Liu Y, Krueger K, Förste N, Wittstock A, Scholze A, Tepel M. Do cysteine residues regulate transient receptor potential canonical type 6 channel protein expression? Antioxid Redox Signal 2012; 16:452-7. [PMID: 22004559 DOI: 10.1089/ars.2011.4343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The regulation of calcium influx through transient receptor potential canonical type 6 (TRPC6) channel is mandatory for the activity of human monocytes. We submit the first evidence that cysteine residues of homocysteine (HC) or acetylcysteine (ACC) affect TRPC6 expression in human monocytes. We observed that patients with chronic renal failure had significantly elevated HC levels and TRPC6 mRNA expression levels in monocytes compared with control subjects. We further observed that administration of HC or ACC significantly increased TRPC6 channel protein expression compared with control conditions. We, therefore, hypothesize that cysteine residues increase TRPC6 channel protein expression in humans.
Collapse
|
69
|
Kork F, Gentsch A, Holthues J, Hellweg R, Jankowski V, Tepel M, Zidek W, Jankowski J. A biomarker for severity of Alzheimer’s disease:1H-NMR resonances in cerebrospinal fluid correlate with performance in mini-mental-state-exam. Biomarkers 2012; 17:36-42. [DOI: 10.3109/1354750x.2011.635806] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
70
|
Liu Y, Echtermeyer F, Thilo F, Theilmeier G, Schmidt A, Schülein R, Jensen BL, Loddenkemper C, Jankowski V, Marcussen N, Gollasch M, Arendshorst WJ, Tepel M. The proteoglycan syndecan 4 regulates transient receptor potential canonical 6 channels via RhoA/Rho-associated protein kinase signaling. Arterioscler Thromb Vasc Biol 2011; 32:378-85. [PMID: 22155451 DOI: 10.1161/atvbaha.111.241018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Syndecan 4 (Sdc4) modulates signal transduction and regulates activity of protein channels. Sdc4 is essential for the regulation of cellular permeability. We hypothesized that Sdc4 may regulate transient receptor potential canonical 6 (TRPC6) channels, a determinant of glomerular permeability, in a RhoA/Rho-associated protein kinase-dependent manner. METHODS AND RESULTS Sdc4 knockout (Sdc4(-/-)) mice showed increased glomerular filtration rate and ameliorated albuminuria under baseline conditions and after bovine serum albumin overload (each P<0.05). Using reverse transcription-polymerase chain reaction and immunoblotting, Sdc4(-/-) mice showed reduced TRPC6 mRNA by 79% and TRPC6 protein by 82% (each P<0.05). Sdc4(-/-) mice showed an increased RhoA activity by 87% and increased phosphorylation of ezrin in glomeruli by 48% (each P<0.05). Sdc4 knockdown in cultured podocytes reduced TRPC6 gene expression and reduced the association of TRPC6 with plasma membrane and TRPC6-mediated calcium influx and currents. Sdc4 knockdown inactivated negative regulatory protein Rho GTPase activating protein by 33%, accompanied by a 41% increase in RhoA activity and increased phosphorylation of ezrin (P<0.05). Conversely, overexpression of Sdc4 reduced RhoA activity and increased TRPC6 protein and TRPC6-mediated calcium influx and currents. CONCLUSIONS Our results establish a previously unknown function of Sdc4 for regulation of TRPC6 channels and support the role of Sdc4 for the regulation of glomerular permeability.
Collapse
|
71
|
Thilo F, Suess O, Liu Y, Tepel M. Decreased Expression of Transient Receptor Potential Channels in Cerebral Vascular Tissue from Patients After Hypertensive Intracerebral Hemorrhage. Clin Exp Hypertens 2011; 33:533-7. [DOI: 10.3109/10641963.2011.561903] [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]
|
72
|
Colic E, Dieperink H, Titlestad K, Tepel M. Management of an acute outbreak of diarrhoea-associated haemolytic uraemic syndrome with early plasma exchange in adults from southern Denmark: an observational study. LANCET (LONDON, ENGLAND) 2011. [PMID: 21871657 DOI: 10.1016/s0140-6736(11)61145-8)] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
BACKGROUND Diarrhoea-associated haemolytic uraemic syndrome in adults is a life-threatening, but rare multisystem disorder that is characterised by acute haemolytic anaemia, thrombocytopenia, and renal insufficiency. We aimed to assess the success of management of this disorder with plasma exchange therapy. METHODS Patients diagnosed with diarrhoea-associated haemolytic uraemic syndrome in southern Denmark were treated with daily plasma exchange by centrifugation and substitution with fresh frozen plasma. Stool culture and serological testing was done to identify the cause of disease, and the success of management with plasma exchange therapy was assessed from change in platelet count, glomerular filtration rate, and lactate dehydrogenase. FINDINGS During May 25-28, 2011, five patients with a median age of 62 years (range 44-70) presented with diarrhoea-associated haemolytic uraemic syndrome, which was caused by an unusual Shiga-toxin-producing Escherichia coli serotype O104:H4. Strains of E coli showed a high resistance to third-generation cephalosporins because the strains had extended-spectrum β lactamases. After plasma exchange, median platelet count and glomerular filtration rate increased, median lactate dehydrogenase concentration decreased, and neurological status improved. The time interval from onset of bloody diarrhoea to start of plasma exchange had an inverse correlation with reduction of lactate dehydrogenase concentrations by plasma exchange (p=0.02). All patients were discharged with normal neurological status at 7 days (range 5-8) after starting plasma exchange. INTERPRETATION Early plasma exchange might ameliorate the course of diarrhoea-associated haemolytic uraemic syndrome in adults. However, this finding should be verified in randomised controlled trials FUNDING None.
Collapse
|
73
|
Colic E, Dieperink H, Titlestad K, Tepel M. Management of an acute outbreak of diarrhoea-associated haemolytic uraemic syndrome with early plasma exchange in adults from southern Denmark: an observational study. Lancet 2011; 378:1089-93. [PMID: 21871657 DOI: 10.1016/s0140-6736(11)61145-8] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Diarrhoea-associated haemolytic uraemic syndrome in adults is a life-threatening, but rare multisystem disorder that is characterised by acute haemolytic anaemia, thrombocytopenia, and renal insufficiency. We aimed to assess the success of management of this disorder with plasma exchange therapy. METHODS Patients diagnosed with diarrhoea-associated haemolytic uraemic syndrome in southern Denmark were treated with daily plasma exchange by centrifugation and substitution with fresh frozen plasma. Stool culture and serological testing was done to identify the cause of disease, and the success of management with plasma exchange therapy was assessed from change in platelet count, glomerular filtration rate, and lactate dehydrogenase. FINDINGS During May 25-28, 2011, five patients with a median age of 62 years (range 44-70) presented with diarrhoea-associated haemolytic uraemic syndrome, which was caused by an unusual Shiga-toxin-producing Escherichia coli serotype O104:H4. Strains of E coli showed a high resistance to third-generation cephalosporins because the strains had extended-spectrum β lactamases. After plasma exchange, median platelet count and glomerular filtration rate increased, median lactate dehydrogenase concentration decreased, and neurological status improved. The time interval from onset of bloody diarrhoea to start of plasma exchange had an inverse correlation with reduction of lactate dehydrogenase concentrations by plasma exchange (p=0.02). All patients were discharged with normal neurological status at 7 days (range 5-8) after starting plasma exchange. INTERPRETATION Early plasma exchange might ameliorate the course of diarrhoea-associated haemolytic uraemic syndrome in adults. However, this finding should be verified in randomised controlled trials FUNDING None.
Collapse
|
74
|
Ma L, Zhong J, Zhao Z, Luo Z, Ma S, Sun J, He H, Zhu T, Liu D, Zhu Z, Tepel M. Activation of TRPV1 reduces vascular lipid accumulation and attenuates atherosclerosis. Cardiovasc Res 2011; 92:504-13. [PMID: 21908651 DOI: 10.1093/cvr/cvr245] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIMS Activation of transient receptor potential vanilloid type-1 (TRPV1) channels may affect lipid storage and the cellular inflammatory response. Now, we tested the hypothesis that activation of TRPV1 channels attenuates atherosclerosis in apolipoprotein E knockout mice (ApoE(-/-)) but not ApoE(-/-)TRPV1(-/-) double knockout mice on a high-fat diet. METHODS AND RESULTS Both TRPV1 mRNA and protein expression were identified in vascular smooth muscle cells (VSMC) and in aorta from C57BL/6J mice using RT-PCR, immunoblotting, and immunohistochemistry. In vitro, activation of TRPV1 by the specific agonists capsaicin and resiniferatoxin dose-dependently increased cytosolic calcium and significantly reduced the accumulation of lipids in VSMC from C57BL/6J mice but not from TRPV1(-/-) mice. TRPV1 activation increased ATP-binding cassette transporter A1 (ABCA1) expression and reduced low-density lipoprotein-related protein 1 (LRP1) expression in VSMC by calcium-dependent and calcineurin- and protein kinase A-dependent mechanisms. These results showed increased cellular cholesterol efflux and reduced cholesterol uptake. In vivo, long-term activation of TRPV1 by capsaicin for 24 weeks increased ABCA1 and reduced LRP1 expression in aorta from ApoE(-/-) mice on a high-fat diet. Long-term activation of TRPV1 significantly reduced lipid storage and atherosclerotic lesions in the aortic sinus and in the thoracoabdominal aorta from ApoE(-/-) mice but not from ApoE(-/-)TRPV1(-/-) mice on a high-fat diet. These findings indicated that TRPV1 activation ameliorates high-fat diet-induced atherosclerosis. CONCLUSION Activation of TRPV1 may be a novel therapeutic tool to attenuate atherosclerosis caused by a high-fat diet.
Collapse
|
75
|
Scholze A, Lamwers S, Tepel M, Sanner BM. Nasal continuous positive airway pressure: influence on digital volume pulse in obstructive sleep apnoea patients. Eur Respir J 2011; 39:1127-35. [DOI: 10.1183/09031936.00052611] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|