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Dallinga RJ, Visser MC, Bot JC, Vroomen PC, Eshghi O, Schreuder TH, Heijboer RJ, Keizer K, Tielbeek AV, den Hertog HM, Gerrits DG, van den Berg-Vos RM, Karas GB, Steyerberg EW, Flach Z, Marquering HA, Sprengers ME, Jenniskens SF, Beenen LF, Zech M, Kowarik M, Seifert C, Schwaiger B, Puri A, Hou S, Wakhloo A, Moonis M, Henniger N, Goddeau R, van den Berg R, Massari F, Minaeian A, Lozano JD, Ramzan M, Stout C, Patel A, Tunguturi A, Onteddu S, Carandang R, Howk M, Koudstaal PJ, Ribó M, Sanjuan E, Rubiera M, Pagola J, Flores A, Muchada M, Meler P, Huerga E, Gelabert S, Coscojuela P, van Zwam WH, Tomasello A, Rodriguez D, Santamarina E, Maisterra O, Boned S, Seró L, Rovira A, Molina CA, Millán M, Muñoz L, Roos YB, Pérez de la Ossa N, Gomis M, Dorado L, López-Cancio E, Palomeras E, Munuera J, García Bermejo P, Remollo S, Castaño C, García-Sort R, van der Lugt A, Cuadras P, Puyalto P, Hernández-Pérez M, Jiménez M, Martínez-Piñeiro A, Lucente G, Dávalos A, Chamorro A, Urra X, Obach V, van 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Nikneshan D, Blayney S, Reddy R, Choi P, Horton M, Musuka T, Dubuc V, Field TS, Desai J, Adatia S, Alseraya A, Nambiar V, van Dijk R, Wong JH, Mitha AP, Morrish WF, Eesa M, Newcommon NJ, Shuaib A, Schwindt B, Butcher KS, Jeerakathil T, Buck B, Khan K, Naik SS, Emery DJ, Owen RJ, Kotylak TB, Ashforth RA, Yeo TA, McNally D, Siddiqui M, Saqqur M, Hussain D, Kalashyan H, Manosalva A, Kate M, Gioia L, Hasan S, Mohammad A, Muratoglu M, Williams D, Thornton J, Cullen A, Brennan P, O'Hare A, Looby S, Hyland D, Duff S, McCusker M, Hallinan B, Lee S, McCormack J, Moore A, O'Connor M, Donegan C, Brewer L, Martin A, Murphy S, O'Rourke K, Smyth S, Kelly P, Lynch T, Daly T, O'Brien P, O'Driscoll A, Martin M, Daly T, Collins R, Coughlan T, McCabe D, Murphy S, O'Neill D, Mulroy M, Lynch O, Walsh T, O'Donnell M, Galvin T, Harbison J, McElwaine P, Mulpeter K, McLoughlin C, Reardon M, Harkin E, Dolan E, Watts M, Cunningham N, Fallon C, Gallagher S, Cotter P, Crowe M, Doyle R, Noone I, Lapierre M, Coté VA, Lanthier S, Odier C, Durocher A, Raymond J, Weill A, Daneault N, Deschaintre Y, Jankowitz B, Baxendell L, Massaro L, Jackson-Graves C, Decesare S, Porter P, Armbruster K, Adams A, Billigan J, Oakley J, Ducruet A, Jadhav A, Giurgiutiu DV, Aghaebrahim A, Reddy V, Hammer M, Starr M, Totoraitis V, Wechsler L, Streib S, Rangaraju S, Campbell D, Rocha M, Gulati D, Silver FL, Krings T, Kalman L, Cayley A, Williams J, Stewart T, Wiegner R, Casaubon LK, Jaigobin C, del Campo JM, Elamin E, Schaafsma JD, Willinsky RA, Agid R, Farb R, ter Brugge K, Sapkoda BL, Baxter BW, Barton K, Knox A, Porter A, Sirelkhatim A, Devlin T, Dellinger C, Pitiyanuvath N, Patterson J, Nichols J, Quarfordt S, Calvert J, Hawk H, Fanale C, Frei DF, Bitner A, Novak A, Huddle D, Bellon R, Loy D, Wagner J, Chang I, Lampe E, Spencer B, Pratt R, Bartt R, Shine S, Dooley G, Nguyen T, Whaley M, McCarthy K, Teitelbaum J, Tampieri D, Poon W, Campbell N, Cortes M, Dowlatshahi D, Lum C, Shamloul R, Robert S, Stotts G, Shamy M, Steffenhagen N, Blacquiere D, Hogan M, AlHazzaa M, Basir G, Lesiuk H, Iancu D, Santos M, Choe H, Weisman DC, Jonczak K, Blue-Schaller A, Shah Q, MacKenzie L, Klein B, Kulandaivel K, Kozak O, Gzesh DJ, Harris LJ, Khoury JS, Mandzia J, Pelz D, Crann S, Fleming L, Hesser K, Beauchamp B, Amato-Marzialli B, Boulton M, Lopez-Ojeda P, Sharma M, Lownie S, Chan R, Swartz R, Howard P, Golob D, Gladstone D, Boyle K, Boulos M, Hopyan J, Yang V, Da Costa L, Holmstedt CA, Turk AS, Navarro R, Jauch E, Ozark S, Turner R, Phillips S, Shankar J, Jarrett J, Gubitz G, Maloney W, Vandorpe R, Schmidt M, Heidenreich J, Hunter G, Kelly M, Whelan R, Peeling L, Burns PA, Hunter A, Wiggam I, Kerr E, Watt M, Fulton A, Gordon P, Rennie I, Flynn P, Smyth G, O'Leary S, Gentile N, Linares G, McNelis P, Erkmen K, Katz P, Azizi A, Weaver M, Jungreis C, Faro S, Shah P, Reimer H, Kalugdan V, Saposnik G, Bharatha A, Li Y, Kostyrko P, Santos M, Marotta T, Montanera W, Sarma D, Selchen D, Spears J, Heo JH, Jeong K, Kim DJ, Kim BM, Kim YD, Song D, Lee KJ, Yoo J, Bang OY, Rho S, Lee J, Jeon P, Kim KH, Cha J, Kim SJ, Ryoo S, Lee MJ, Sohn SI, Kim CH, Ryu HG, Hong JH, Chang HW, Lee CY, Rha J, Davis SM, Donnan GA, Campbell BCV, Mitchell PJ, Churilov L, Yan B, Dowling R, Yassi N, Oxley TJ, Wu TY, Silver G, McDonald A, McCoy R, Kleinig TJ, Scroop R, Dewey HM, Simpson M, Brooks M, Coulton B, Krause M, Harrington TJ, Steinfort B, Faulder K, Priglinger M, Day S, Phan T, Chong W, Holt M, Chandra RV, Ma H, Young D, Wong K, Wijeratne T, Tu H, Mackay E, Celestino S, Bladin CF, Loh PS, Gilligan A, Ross Z, Coote S, Frost T, Parsons MW, Miteff F, Levi CR, Ang T, Spratt N, Kaauwai L, Badve M, Rice H, de Villiers L, Barber PA, McGuinness B, Hope A, Moriarty M, Bennett P, Wong A, Coulthard A, Lee A, Jannes J, Field D, Sharma G, Salinas S, Cowley E, Snow B, Kolbe J, Stark R, King J, Macdonnell R, Attia J, D'Este C, Saver JL, Goyal M, Diener HC, Levy EI, Bonafé A, Mendes Pereira V, Jahan R, Albers GW, Cognard C, Cohen DJ, Hacke W, Jansen O, Jovin TG, Mattle HP, Nogueira RG, Siddiqui AH, Yavagal DR, von Kummer R, Smith W, Turjman F, Hamilton S, Chiacchierini R, Amar A, Sanossian N, Loh Y, Devlin T, Baxter B, Hawk H, Sapkota B, Quarfordt S, Sirelkhatim A, Dellinger C, Barton K, Reddy VK, Ducruet A, Jadhav A, Horev A, Giurgiutiu DV, Totoraitis V, Hammer M, Jankowitz B, Wechsler L, Rocha M, Gulati D, Campbell D, Star M, Baxendell L, Oakley J, Siddiqui A, Hopkins LN, Snyder K, Sawyer R, Hall S, Costalat V, Riquelme C, Machi P, Omer E, Arquizan C, Mourand I, Charif M, Ayrignac X, Menjot de Champfleur N, Leboucq N, Gascou G, Moynier M, du Mesnil de Rochemont R, Singer O, Berkefeld J, Foerch C, Lorenz M, Pfeilschifer W, Hattingen E, Wagner M, You SJ, Lescher S, Braun H, Dehkharghani S, Belagaje SR, Anderson A, Lima A, Obideen M, Haussen D, Dharia R, Frankel M, Patel V, Owada K, Saad A, Amerson L, Horn C, Doppelheuer S, Schindler K, Lopes DK, Chen M, Moftakhar R, Anton C, Smreczak M, Carpenter JS, Boo S, Rai A, 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M, Belden J, Baker C, Connolly LS, Papanagiotou P, Roth C, Kastrup A, Politi M, Brunner F, Alexandrou M, Merdivan H, Ramsey C, Given II C, Renfrow S, Deshmukh V, Sasadeusz K, Vincent F, Thiesing JT, Putnam J, Bhatt A, Kansara A, Caceves D, Lowenkopf T, Yanase L, Zurasky J, Dancer S, Freeman B, Scheibe-Mirek T, Robison J, Rontal A, Roll J, Clark D, Rodriguez M, Fitzsimmons BFM, Zaidat O, Lynch JR, Lazzaro M, Larson T, Padmore L, Das E, Farrow-Schmidt A, Hassan A, Tekle W, Cate C, Jansen O, Cnyrim C, Wodarg F, Wiese C, Binder A, Riedel C, Rohr A, Lang N, Laufs H, Krieter S, Remonda L, Diepers M, Añon J, Nedeltchev K, Kahles T, Biethahn S, Lindner M, Chang V, Gächter C, Esperon C, Guglielmetti M, Arenillas Lara JF, Martínez Galdámez M, Calleja Sanz AI, Cortijo Garcia E, Garcia Bermejo P, Perez S, Mulero Carrillo P, Crespo Vallejo E, Ruiz Piñero M, Lopez Mesonero L, Reyes Muñoz FJ, Brekenfeld C, Buhk JH, Krützelmann A, Thomalla G, Cheng B, Beck C, Hoppe J, Goebell E, Holst B, Grzyska U, Wortmann G, Starkman S, Duckwiler G, Jahan R, Rao N, Sheth S, Ng K, Noorian A, Szeder V, Nour M, McManus M, Huang J, Tarpley J, Tateshima S, Gonzalez N, Ali L, Liebeskind D, Hinman J, Calderon-Arnulphi M, Liang C, Guzy J, Koch S, DeSousa K, Gordon-Perue G, Haussen D, Elhammady M, Peterson E, Pandey V, Dharmadhikari S, Khandelwal P, Malik A, Pafford R, Gonzalez P, Ramdas K, Andersen G, Damgaard D, Von Weitzel-Mudersbach P, Simonsen C, Ruiz de Morales Ayudarte N, Poulsen M, Sørensen L, Karabegovich S, Hjørringgaard M, Hjort N, Harbo T, Sørensen K, Deshaies E, Padalino D, Swarnkar A, Latorre JG, Elnour E, El-Zammar Z, Villwock M, Farid H, Balgude A, Cross L, Hansen K, Holtmannspötter M, Kondziella D, Hoejgaard J, Taudorf S, Soendergaard H, Wagner A, Cronquist M, Stavngaard T, Cortsen M, Krarup LH, Hyldal T, Haring HP, Guggenberger S, Hamberger M, Trenkler J, Sonnberger M, Nussbaumer K, Dominger C, Bach E, Jagadeesan BD, Taylor R, Kim J, Shea K, Tummala R, Zacharatos H, Sandhu D, Ezzeddine M, Grande A, Hildebrandt D, Miller K, Scherber J, Hendrickson A, Jumaa M, Zaidi S, Hendrickson T, Snyder V, Killer-Oberpfalzer M, Mutzenbach J, Weymayr F, Broussalis E, Stadler K, Jedlitschka A, Malek A, Mueller-Kronast N, Beck P, Martin C, Summers D, Day J, Bettinger I, Holloway W, Olds K, Arkin S, Akhtar N, Boutwell C, Crandall S, Schwartzman M, Weinstein C, Brion B, Prothmann S, Kleine J, Kreiser K, Boeckh-Behrens T, Poppert H, Wunderlich S, Koch ML, Biberacher V, Huberle A, Gora-Stahlberg G, Knier B, Meindl T, Utpadel-Fischler D. Imaging features and safety and efficacy of endovascular stroke treatment: a meta-analysis of individual patient-level data. Lancet Neurol 2018; 17:895-904. [DOI: 10.1016/s1474-4422(18)30242-4] [Citation(s) in RCA: 213] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/11/2018] [Accepted: 06/12/2018] [Indexed: 11/29/2022]
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Johnsen G, Norli M, Moline M, Robbins I, von Quillfeldt C, Sørensen K, Cottier F, Berge J. The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms. Polar Biol 2018; 41:1197-1216. [PMID: 30996513 PMCID: PMC6438636 DOI: 10.1007/s00300-018-2278-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 01/23/2018] [Accepted: 02/02/2018] [Indexed: 11/27/2022]
Abstract
Under-ice blooms of phytoplankton in the Chukchi Sea have been observed, with strong implications for our understanding of the production regimes in the Arctic Ocean. Using a combination of satellite remote sensing of phytoplankton biomass, in situ observations under sea ice from an autonomous underwater vehicle (AUV), and in vivo photophysiology, we examined the composition, magnitude and origin of a bloom detected beneath the sea ice Northwest of Svalbard (Southern Yermak Plateau) in May 2010. In situ concentration of up to 20 mg chlorophyll a [Chl a] m−3, were dominated by the northern planktonic spring species of diatoms, Thalassiosira nordenskioeldii, T. antarctica var. borealis, Chaetoceros socialisspecies complex and Fragilariopsis oceanica. These species were also found south of the marginal ice zone (MIZ). Cells in the water column under the sea ice were typically high-light acclimated, with a mean light saturation index (Ek) of 138 μmol photons m−2 s−1 and a ratio between photoprotective carotenoids (PPC) and Chl a (w:w) of 0.2. Remotely sensed data of [Chl a] showed a 32,000 km2 bloom developing south of the MIZ. In effect, our data suggest that the observed under-ice bloom was in fact a bloom developed in open waters south of the ice edge, and that a combination of northward-flowing water masses and southward drifting sea ice effectively positioned the bloom under the sea ice. This have implications for our general understanding of under-ice blooms, suggesting that their origin and connection with open water may be different in different regions of the Arctic.
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Campbell BCV, van Zwam WH, Goyal M, Menon BK, Dippel DWJ, Demchuk AM, Bracard S, White P, Dávalos A, Majoie CBLM, van der Lugt A, Ford GA, de la Ossa NP, Kelly M, Bourcier R, Donnan GA, Roos YBWEM, Bang OY, Nogueira RG, Devlin TG, van den Berg LA, Clarençon F, Burns P, Carpenter J, Berkhemer OA, Yavagal DR, Pereira VM, Ducrocq X, Dixit A, Quesada H, Epstein J, Davis SM, Jansen O, Rubiera M, Urra X, Micard E, Lingsma HF, Naggara O, Brown S, Guillemin F, Muir KW, van Oostenbrugge RJ, Saver JL, Jovin TG, Hill MD, Mitchell PJ, Berkhemer OA, Fransen PSS, Beumer D, van den Berg LA, Lingsma HF, Yoo AJ, Schonewille WJ, Vos JA, Nederkoorn PJ, Wermer MJH, van Walderveen MAA, Staals J, Hofmeijer J, van Oostayen JA, Lycklama à Nijeholt GJ, Boiten J, Brouwer PA, Emmer BJ, de Bruijn SF, van Dijk LC, Kappelle J, Lo RH, van Dijk EJ, de Vries J, de Kort PL, van Rooij WJJ, van den Berg JS, van Hasselt BA, Aerden LA, Dallinga RJ, Visser MC, Bot JC, Vroomen PC, Eshghi O, Schreuder TH, Heijboer RJ, Keizer K, Tielbeek AV, den Hertog HM, Gerrits DG, van den Berg-Vos RM, Karas GB, Steyerberg EW, Flach Z, Marquering HA, Sprengers ME, Jenniskens SF, Beenen LF, van den Berg R, Koudstaal PJ, van Zwam WH, Roos YB, van der Lugt A, van Oostenbrugge RJ, Wakhloo A, Moonis M, Henninger N, Goddeau R, Massari F, Minaeian A, Lozano JD, Ramzan M, Stout C, Patel A, Majoie CB, Tunguturi A, Onteddu S, Carandang R, Howk M, Ribó M, Sanjuan E, Rubiera M, Pagola J, Flores A, Muchada M, Dippel DW, Meler P, Huerga E, Gelabert S, Coscojuela P, Tomasello A, Rodriguez D, Santamarina E, Maisterra O, Boned S, Seró L, Brown MM, Rovira A, Molina CA, Millán M, Muñoz L, Pérez de la Ossa N, Gomis M, Dorado L, López-Cancio E, Palomeras E, Munuera J, Liebig T, García Bermejo P, Remollo S, Castaño C, García-Sort R, Cuadras P, Puyalto P, Hernández-Pérez M, Jiménez M, Martínez-Piñeiro A, Lucente G, Stijnen T, Dávalos A, Chamorro A, Urra X, Obach V, Cervera A, Amaro S, Llull L, Codas J, Balasa M, Navarro J, Andersson T, Ariño 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Porter P, Armbruster K, Adams A, Billigan J, Oakley J, Ducruet A, Jadhav A, Giurgiutiu DV, Aghaebrahim A, Reddy V, Hammer M, Starr M, Totoraitis V, Wechsler L, Streib S, Rangaraju S, Campbell D, Rocha M, Gulati D, Silver FL, Krings T, Kalman L, Cayley A, Williams J, Stewart T, Wiegner R, Casaubon LK, Jaigobin C, del Campo JM, Elamin E, Schaafsma JD, Willinsky RA, Agid R, Farb R, ter Brugge K, Sapkoda BL, Baxter BW, Barton K, Knox A, Porter A, Sirelkhatim A, Devlin T, Dellinger C, Pitiyanuvath N, Patterson J, Nichols J, Quarfordt S, Calvert J, Hawk H, Fanale C, Frei DF, Bitner A, Novak A, Huddle D, Bellon R, Loy D, Wagner J, Chang I, Lampe E, Spencer B, Pratt R, Bartt R, Shine S, Dooley G, Nguyen T, Whaley M, McCarthy K, Teitelbaum J, Tampieri D, Poon W, Campbell N, Cortes M, Dowlatshahi D, Lum C, Shamloul R, Robert S, Stotts G, Shamy M, Steffenhagen N, Blacquiere D, Hogan M, AlHazzaa M, Basir G, Lesiuk H, Iancu D, Santos M, Choe H, Weisman DC, Jonczak K, Blue-Schaller A, Shah Q, MacKenzie L, Klein B, Kulandaivel K, Kozak O, Gzesh DJ, Harris LJ, Khoury JS, Mandzia J, Pelz D, Crann S, Fleming L, Hesser K, Beauchamp B, Amato-Marzialli B, Boulton M, Lopez- Ojeda P, Sharma M, Lownie S, Chan R, Swartz R, Howard P, Golob D, Gladstone D, Boyle K, Boulos M, Hopyan J, Yang V, Da Costa L, Holmstedt CA, Turk AS, Navarro R, Jauch E, Ozark S, Turner R, Phillips S, Shankar J, Jarrett J, Gubitz G, Maloney W, Vandorpe R, Schmidt M, Heidenreich J, Hunter G, Kelly M, Whelan R, Peeling L, Burns PA, Hunter A, Wiggam I, Kerr E, Watt M, Fulton A, Gordon P, Rennie I, Flynn P, Smyth G, O'Leary S, Gentile N, Linares G, McNelis P, Erkmen K, Katz P, Azizi A, Weaver M, Jungreis C, Faro S, Shah P, Reimer H, Kalugdan V, Saposnik G, Bharatha A, Li Y, Kostyrko P, Santos M, Marotta T, Montanera W, Sarma D, Selchen D, Spears J, Heo JH, Jeong K, Kim DJ, Kim BM, Kim YD, Song D, Lee KJ, Yoo J, Bang OY, Rho S, Lee J, Jeon P, Kim KH, Cha J, Kim SJ, Ryoo S, Lee MJ, Sohn SI, Kim CH, Ryu HG, Hong JH, Chang HW, Lee CY, Rha J, Davis SM, Donnan GA, Campbell BCV, Mitchell PJ, Churilov L, Yan B, Dowling R, Yassi N, Oxley TJ, Wu TY, Silver G, McDonald A, McCoy R, Kleinig TJ, Scroop R, Dewey HM, Simpson M, Brooks M, Coulton B, Krause M, Harrington TJ, Steinfort B, Faulder K, Priglinger M, Day S, Phan T, Chong W, Holt M, Chandra RV, Ma H, Young D, Wong K, Wijeratne T, Tu H, Mackay E, Celestino S, Bladin CF, Loh PS, Gilligan A, Ross Z, Coote S, Frost T, Parsons MW, Miteff F, Levi CR, Ang T, Spratt N, Kaauwai L, Badve M, Rice H, de Villiers L, Barber PA, McGuinness B, Hope A, Moriarty M, Bennett P, Wong A, Coulthard A, Lee A, Jannes J, Field D, Sharma G, Salinas S, Cowley E, Snow B, Kolbe J, Stark R, King J, Macdonnell R, Attia J, D'Este C, Saver JL, Goyal M, Diener HC, Levy EI, Bonafé A, Mendes Pereira V, Jahan R, Albers GW, Cognard C, Cohen DJ, Hacke W, Jansen O, Jovin TG, Mattle HP, Nogueira RG, Siddiqui AH, Yavagal DR, von Kummer R, Smith W, Turjman F, Hamilton S, Chiacchierini R, Amar A, Sanossian N, Loh Y, Devlin T, Baxter B, Hawk H, Sapkota B, Quarfordt S, Sirelkhatim A, Dellinger C, Barton K, Reddy VK, Ducruet A, Jadhav A, Horev A, Giurgiutiu DV, Totoraitis V, Hammer M, Jankowitz B, Wechsler L, Rocha M, Gulati D, Campbell D, Star M, Baxendell L, Oakley J, Siddiqui A, Hopkins LN, Snyder K, Sawyer R, Hall S, Costalat V, Riquelme C, Machi P, Omer E, Arquizan C, Mourand I, Charif M, Ayrignac X, Menjot de Champfleur N, Leboucq N, Gascou G, Moynier M, du Mesnil de Rochemont R, Singer O, Berkefeld J, Foerch C, Lorenz M, Pfeilschifer W, Hattingen E, Wagner M, You SJ, Lescher S, Braun H, Dehkharghani S, Belagaje SR, Anderson A, Lima A, Obideen M, Haussen D, Dharia R, Frankel M, Patel V, Owada K, Saad A, Amerson L, Horn C, Doppelheuer S, Schindler K, Lopes DK, Chen M, Moftakhar R, Anton C, Smreczak M, Carpenter JS, Boo S, Rai A, Roberts T, Tarabishy A, Gutmann L, Brooks C, Brick J, Domico J, Reimann G, Hinrichs K, Becker M, Heiss E, Selle C, Witteler A, Al-Boutros S, Danch MJ, Ranft A, Rohde S, Burg K, Weimar C, Zegarac V, Hartmann C, Schlamann M, Göricke S, Ringlestein A, Wanke I, Mönninghoff C, Dietzold M, Budzik R, Davis T, Eubank G, Hicks WJ, Pema P, Vora N, Mejilla J, Taylor M, Clark W, Rontal A, Fields J, Peterson B, Nesbit G, Lutsep H, Bozorgchami H, Priest R, Ologuntoye O, Barnwell S, Dogan A, Herrick K, Takahasi C, Beadell N, Brown B, Jamieson S, Hussain MS, Russman A, Hui F, Wisco D, Uchino K, Khawaja Z, Katzan I, Toth G, Cheng-Ching E, Bain M, Man S, Farrag A, George P, John S, Shankar L, Drofa A, Dahlgren R, Bauer A, Itreat A, Taqui A, Cerejo R, Richmond A, Ringleb P, Bendszus M, Möhlenbruch M, Reiff T, Amiri H, Purrucker J, Herweh C, Pham M, Menn O, Ludwig I, Acosta I, Villar C, Morgan W, Sombutmai C, Hellinger F, Allen E, Bellew M, Gandhi R, Bonwit E, Aly J, Ecker RD, Seder D, Morris J, Skaletsky M, Belden J, Baker C, Connolly LS, Papanagiotou P, Roth C, Kastrup A, Politi M, Brunner F, Alexandrou M, Merdivan H, Ramsey C, Given II C, Renfrow S, Deshmukh V, Sasadeusz K, Vincent F, Thiesing JT, Putnam J, Bhatt A, Kansara A, Caceves D, Lowenkopf T, Yanase L, Zurasky J, Dancer S, Freeman B, Scheibe-Mirek T, Robison J, Rontal A, Roll J, Clark D, Rodriguez M, Fitzsimmons BFM, Zaidat O, Lynch JR, Lazzaro M, Larson T, Padmore L, Das E, Farrow-Schmidt A, Hassan A, Tekle W, Cate C, Jansen O, Cnyrim C, Wodarg F, Wiese C, Binder A, Riedel C, Rohr A, Lang N, Laufs H, Krieter S, Remonda L, Diepers M, Añon J, Nedeltchev K, Kahles T, Biethahn S, Lindner M, Chang V, Gächter C, Esperon C, Guglielmetti M, Arenillas Lara JF, Martínez Galdámez M, Calleja Sanz AI, Cortijo Garcia E, Garcia Bermejo P, Perez S, Mulero Carrillo P, Crespo Vallejo E, Ruiz Piñero M, Lopez Mesonero L, Reyes Muñoz FJ, Brekenfeld C, Buhk JH, Krützelmann A, Thomalla G, Cheng B, Beck C, Hoppe J, Goebell E, Holst B, Grzyska U, Wortmann G, Starkman S, Duckwiler G, Jahan R, Rao N, Sheth S, Ng K, Noorian A, Szeder V, Nour M, McManus M, Huang J, Tarpley J, Tateshima S, Gonzalez N, Ali L, Liebeskind D, Hinman J, Calderon-Arnulphi M, Liang C, Guzy J, Koch S, DeSousa K, Gordon-Perue G, Haussen D, Elhammady M, Peterson E, Pandey V, Dharmadhikari S, Khandelwal P, Malik A, Pafford R, Gonzalez P, Ramdas K, Andersen G, Damgaard D, Von Weitzel-Mudersbach P, Simonsen C, Ruiz de Morales Ayudarte N, Poulsen M, Sørensen L, Karabegovich S, Hjørringgaard M, Hjort N, Harbo T, Sørensen K, Deshaies E, Padalino D, Swarnkar A, Latorre JG, Elnour E, El-Zammar Z, Villwock M, Farid H, Balgude A, Cross L, Hansen K, Holtmannspötter M, Kondziella D, Hoejgaard J, Taudorf S, Soendergaard H, Wagner A, Cronquist M, Stavngaard T, Cortsen M, Krarup LH, Hyldal T, Haring HP, Guggenberger S, Hamberger M, Trenkler J, Sonnberger M, Nussbaumer K, Dominger C, Bach E, Jagadeesan BD, Taylor R, Kim J, Shea K, Tummala R, Zacharatos H, Sandhu D, Ezzeddine M, Grande A, Hildebrandt D, Miller K, Scherber J, Hendrickson A, Jumaa M, Zaidi S, Hendrickson T, Snyder V, Killer-Oberpfalzer M, Mutzenbach J, Weymayr F, Broussalis E, Stadler K, Jedlitschka A, Malek A, Mueller-Kronast N, Beck P, Martin C, Summers D, Day J, Bettinger I, Holloway W, Olds K, Arkin S, Akhtar N, Boutwell C, Crandall S, Schwartzman M, Weinstein C, Brion B, Prothmann S, Kleine J, Kreiser K, Boeckh-Behrens T, Poppert H, Wunderlich S, Koch ML, Biberacher V, Huberle A, Gora-Stahlberg G, Knier B, Meindl T, Utpadel-Fischler D, Zech M, Kowarik M, Seifert C, Schwaiger B, Puri A, Hou S. Effect of general anaesthesia on functional outcome in patients with anterior circulation ischaemic stroke having endovascular thrombectomy versus standard care: a meta-analysis of individual patient data. Lancet Neurol 2018; 17:47-53. [DOI: 10.1016/s1474-4422(17)30407-6] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/05/2017] [Accepted: 10/11/2017] [Indexed: 10/18/2022]
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Hærvig J, Kleinhans U, Wieland C, Spliethoff H, Jensen A, Sørensen K, Condra T. On the adhesive JKR contact and rolling models for reduced particle stiffness discrete element simulations. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2017.07.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Jensen AK, Rechnitzer C, Macklon KT, Ifversen MRS, Birkebæk N, Clausen N, Sørensen K, Fedder J, Ernst E, Andersen CY. Cryopreservation of ovarian tissue for fertility preservation in a large cohort of young girls: focus on pubertal development. Hum Reprod 2016; 32:154-164. [PMID: 27816923 DOI: 10.1093/humrep/dew273] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 09/15/2016] [Accepted: 10/20/2016] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Is there an association between the need for medical puberty induction and the diagnosis or treatment received in girls who have undergone cryopreservation of ovarian tissue for fertility preservation? SUMMARY ANSWER There was a clear association between the intensity of treatment received and requirement for medical puberty induction but no association with the diagnosis. WHAT IS KNOWN ALREADY Although it cannot be predicted which girls will become infertile or develop premature ovarian insufficiency (POI) following intensive chemotherapy or irradiation, patients who are at high risk of POI should be offered ovarian tissue cryopreservation (OTC). This includes girls who are planned to receive either high doses of alkylating agents, conditioning regimen before stem cell transplantation (SCT), total body irradiation (TBI) or high radiation doses to the craniospinal, abdominal or pelvic area. STUDY DESIGN, SIZE, DURATION This is a retrospective cohort study. In total, 176 Danish girls under 18 years of age have had OTC performed over a period of 15 years. An overview of the girls' diagnoses and mean age at OTC as well as the number of deceased is presented. Of the 176 girls, 38 had died and 46 girls were still younger than 12 years so their pubertal development cannot be evaluated yet. For the 60 girls who had OTC performed after 12 years of age, the incidence of POI was evaluated and in the group of 32 girls who were younger than 12 years at OTC, the association between the diagnosis and received treatment and the requirement for medical puberty induction was examined. PARTICIPANTS/MATERIALS, SETTING, METHODS The need for medical puberty induction was assessed in 32 girls who were prepubertal at the time of OTC. MAIN RESULTS AND THE ROLE OF CHANCE Indications for OTC were allogeneic SCT for leukaemia, myelodysplastic syndrome or benign haematological disorders, autologous SCT for lymphoma or sarcoma, and irradiation to the pelvis or to the spinal axis. The mean age at OTC of the 176 girls were 11.3 years. The two most prevalent diagnoses of the 176 girls were malignant tumours and malignant haematological diseases. Among the 32 prepubertal girls, 12 received high dose chemotherapy and either TBI prior to SCT or irradiation to the pelvis, abdomen or the spinal axis, 13 received high dose alkylating agents but no irradiation prior to SCT, six received alkylating agents as part of conventional chemotherapy and one patient had a genetic metabolic disorder and did not receive gonadotoxic treatment. Among these 32 girls, 23 did not undergo puberty spontaneously and thus received medical puberty induction. Among the nine girls, who went through spontaneous puberty, four had received high dose alkylating agents and five had received conventional chemotherapy. LIMITATIONS REASONS FOR CAUTION All information was retrieved retrospectively from patient records, and thus some information was not available. WIDER IMPLICATIONS OF THE FINDINGS OTC should be recommended to all young girls, who present a high risk of developing ovarian insufficiency and/or infertility following high dose chemotherapy and/or irradiation. STUDY FUNDING/COMPETING INTERESTS The Childhood Cancer Foundation (2012-2016) and the EU interregional project ReproHigh are thanked for having funded this study. They had no role in the study design, collection and analysis of the data or writing of the report. The authors have no conflict of interest to disclose.
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Poste AE, Braaten HFV, de Wit HA, Sørensen K, Larssen T. Effects of photodemethylation on the methylmercury budget of boreal Norwegian lakes. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2015; 34:1213-23. [PMID: 25663582 DOI: 10.1002/etc.2923] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 01/07/2015] [Accepted: 01/30/2015] [Indexed: 05/04/2023]
Abstract
Methylmercury (MeHg) concentrations in freshwater fish from southeastern Norway continue to increase, highlighting the need for a comprehensive understanding of MeHg sources, cycling, and degradation in the aquatic environment. The authors assessed the importance of photodemethylation in the MeHg budget of 4 Norwegian lakes. Photodemethylation rates were determined using incubation experiments with MeHg-spiked natural lake water. The authors determined full-spectrum exposure rates at all study sites and waveband-specific rates (photosynthetically active radiation, ultraviolet-A radiation, and ultraviolet-B radiation) at 1 clear-water (Sognsvann) and 1 humic (Langtjern) site. No significant differences in photodemethylation rates between the sites were found, and the authors' observed rates agreed with available literature for lake and wetland waters. The authors paired experimentally derived photodemethylation rates with lake-specific incident irradiation, light attenuation, and MeHg concentrations to estimate MeHg loss through photodemethylation for the study sites. For Langtjern, losses through photodemethylation equalled 27% of total annual inputs, highlighting the importance of photodemethylation in the MeHg budget. Furthermore, the authors assessed how changes in terrestrial dissolved organic carbon (DOC) exported to freshwaters and climate-driven reductions in ice cover duration may affect MeHg losses through photodemethylation. Results suggest that future increases in DOC may lead to higher aqueous MeHg concentrations in boreal lakes due to increased DOC-associated MeHg inputs paired with significant decreases in the loss of MeHg through photodemethylation due to increased light attenuation.
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Rocktäschel T, Klarmann C, Ochoa J, Boisson P, Sørensen K, Horn H. Influence of the granulation grade on the concentration of suspended solids in the effluent of a pilot scale sequencing batch reactor operated with aerobic granular sludge. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.01.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Van den Broucke S, Van der Zanden G, Chang P, Doyle G, Levin D, Pelikan J, Schillinger D, Schwarz P, Sørensen K, Yardley L, Riemenschneider H. Enhancing the effectiveness of diabetes self-management education: the diabetes literacy project. Horm Metab Res 2014; 46:933-8. [PMID: 25337960 DOI: 10.1055/s-0034-1389952] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Patient empowerment through self-management education is central to improving the quality of diabetes care and preventing Type 2 Diabetes. Although national programs exist, there is no EU-wide strategy for diabetes self-management education, and patients with limited literacy face barriers to effective self-management. The Diabetes Literacy project, initiated with the support of the European Commission, aims to fill this gap. The project investigates the effectiveness of diabetes self-management education, targeting people with or at risk of Type 2 Diabetes in the 28 EU Member States, as part of a comprehensive EU-wide diabetes strategy. National diabetes strategies in the EU, US, Taiwan, and Israel are compared, and diabetes self-management programs inventorized. The costs of the diabetes care pathway are assessed on a per person basis at national level. A comparison is made of the (cost)-effectiveness of different methods for diabetes self-management support, and the moderating role of health literacy, organization of the health services, and implementation fidelity of education programs are considered. Web-based materials are developed and evaluated by randomized trials to evaluate if interactive internet delivery can enhance self-management support for people with lower levels of health literacy. The 3-year project started in December 2012. Several literature reviews have been produced and protocol development and research design are in the final stages. Primary and secondary data collection and analysis take place in 2014. The results will inform policy decisions on improving the prevention, treatment, and care for persons with diabetes across literacy levels.
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Mouritsen A, Frederiksen H, Sørensen K, Aksglaede L, Hagen C, Skakkebaek NE, Main KM, Andersson AM, Juul A. Urinary phthalates from 168 girls and boys measured twice a year during a 5-year period: associations with adrenal androgen levels and puberty. J Clin Endocrinol Metab 2013; 98:3755-64. [PMID: 23824423 DOI: 10.1210/jc.2013-1284] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Little is known about the possible deleterious effects of phthalate exposure on endogenous sex steroid levels in children. OBJECTIVE Our objective was to investigate whether urinary phthalate metabolite levels are associated with circulating adrenal androgen levels and age at puberty. METHODS This was a longitudinal study of 168 healthy children (84 girls) examined every 6 months for 5 years. Serum levels of dehydroepiandrostenedione sulfate (DHEAS), Δ4-androstenedione, testosterone, and urinary morning excretion of 14 phthalate metabolites, corresponding to 7 different phthalate diesters were determined. A variation in urinary excretion of phthalates was evident in each child, which made a mean of repetitive samples more representative for long-term excretion than a single determination. RESULTS We found that girls with excretion of monobutyl phthalate isomers (MBP) and di(2-ethylhexyl) phthalate metabolites above the geometric group mean (795 and 730 ng/kg, respectively) had lower levels of DHEAS and Δ4-androstenedione, although statistically significant only at 13 years of age. In boys, we found that excretion of monobenzyl phthalate above the geometric group mean (346 ng/kg) was associated with lower levels of DHEAS at 11 years of age but higher levels of testosterone at 13 years of age. The same trend was observed for MBP excretion, albeit not statistically significant. A lower age at pubarche was observed in boys with excretion of MBP above the geometric group mean (11.0 vs 12.3 years, P = 0.005). CONCLUSION Our data indicate that exposure to dibutyl phthalate isomers (DBP) (in girls) and butylbenzyl phthalate (in boys) are negatively associated with adrenal androgen levels and in boys positively associated with testosterone level at 13 years of age. High exposure to DBP was associated with earlier age at pubarche in boys. In girls, no associations between phthalate exposure and age at pubertal milestones were observed.
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Frederiksen H, Sørensen K, Mouritsen A, Aksglaede L, Hagen CP, Petersen JH, Skakkebaek NE, Andersson AM, Juul A. High urinary phthalate concentration associated with delayed pubarche in girls. ACTA ACUST UNITED AC 2012; 35:216-26. [DOI: 10.1111/j.1365-2605.2012.01260.x] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Wohlfahrt-Veje C, Andersen HR, Schmidt IM, Aksglaede L, Sørensen K, Juul A, Jensen TK, Grandjean P, Skakkebaek NE, Main KM. Early breast development in girls after prenatal exposure to non-persistent pesticides. ACTA ACUST UNITED AC 2012; 35:273-82. [DOI: 10.1111/j.1365-2605.2011.01244.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rasmussen J, Holmberg L, Sørensen K, Kwan M, Andersen M, de Zee M. Performance optimization by musculoskeletal simulation. ACTA ACUST UNITED AC 2011. [DOI: 10.1051/sm/2011122] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Mortensen M, Borre M, Benzon D, Sørensen K, Ørntoft T, Dyrskjøt L. MP-16.10 Expression Profiling of Laser Micro Dissected Prostate Cancer Cells Delineates Genes Associated With Biochemical Recurrence After Radical Prostatectomy. Urology 2011. [DOI: 10.1016/j.urology.2011.07.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kratzer S, Ebert K, Sørensen K. Monitoring the Bio-optical State of the Baltic Sea Ecosystem with Remote Sensing and Autonomous In Situ Techniques. THE BALTIC SEA BASIN 2011. [DOI: 10.1007/978-3-642-17220-5_20] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Aksglaede L, Sørensen K, Boas M, Mouritsen A, Hagen CP, Jensen RB, Petersen JH, Linneberg A, Andersson AM, Main KM, Skakkebæk NE, Juul A. Changes in anti-Müllerian hormone (AMH) throughout the life span: a population-based study of 1027 healthy males from birth (cord blood) to the age of 69 years. J Clin Endocrinol Metab 2010; 95:5357-64. [PMID: 20843948 DOI: 10.1210/jc.2010-1207] [Citation(s) in RCA: 156] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Anti-Müllerian hormone (AMH), which is secreted by immature Sertoli cells, triggers the involution of the fetal Müllerian ducts. AMH is a testis-specific marker used for diagnosis in infants with ambiguous genitalia or bilateral cryptorchidism. AIM The aim of the study was to describe the ontogeny of AMH secretion through life in healthy males. SETTING This was a population-based study of healthy volunteers. PARTICIPANTS PARTICIPANTS included 1027 healthy males from birth (cord blood) to 69 yr. A subgroup was followed up longitudinally through the infantile minipuberty [(in cord blood, and at 3 and 12 months), n=55] and another group through puberty [(biannual measurements), n=83]. MAIN OUTCOME MEASURES Serum AMH was determined by a sensitive immunoassay. Serum testosterone, LH, and FSH were measured, and pubertal staging was performed in boys aged 6 to 20 yr (n=616). RESULTS Serum AMH was above the detection limit in all samples with a marked variation according to age and pubertal status. The median AMH level in cord blood was 148 pmol/liter and increased significantly to the highest observed levels at 3 months (P<0.0001). AMH declined at 12 months (P<0.0001) and remained at a relatively stable level throughout childhood until puberty, when AMH declined progressively with adults exhibiting 3-4% of infant levels. CONCLUSION Based on this extensive data set, we found detectable AMH serum levels at all ages, with the highest measured levels during infancy. At the time of puberty, AMH concentrations declined and remained relatively stable throughout adulthood. The potential physiological role of AMH and clinical applicability of AMH measurements remain to be determined.
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Mouritsen A, Aksglaede L, Sørensen K, Mogensen SS, Leffers H, Main KM, Frederiksen H, Andersson AM, Skakkebaek NE, Juul A. Hypothesis: exposure to endocrine-disrupting chemicals may interfere with timing of puberty. ACTA ACUST UNITED AC 2010; 33:346-59. [PMID: 20487042 DOI: 10.1111/j.1365-2605.2010.01051.x] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A recent decline in onset of puberty - especially among girls - has been observed, first in the US in the mid-1990s and now also in Europe. The development of breast tissue in girls occurs at a much younger age and the incidence of precocious puberty (PP) is increasing. Genetic factors and increasing prevalence of adiposity may contribute, but environmental factors are also likely to be involved. In particular, the widespread presence of endocrine-disrupting chemicals (EDCs) is suspected to contribute to the trend of earlier pubertal onset. The factors regulating the physiological onset of normal puberty are poorly understood. This hampers investigation of the possible role of environmental influences. There are many types of EDCs. One chemical may have more than one mode of action and the effects may depend on dose and duration of the exposure, as well as the developmental stage of the exposed individual. There may also be a wide range of genetic susceptibility to EDCs. Human exposure scenarios are complex and our knowledge about effects of mixtures of EDCs is limited. Importantly, the consequences of an exposure may not be apparent at the actual time of exposure, but may manifest later in life. Most known EDCs have oestrogenic and/or anti-androgenic actions and only few have androgenic or anti-oestrogenic effects. Thus, it appears plausible that they interfere with normal onset of puberty. The age at menarche has only declined by a few months whereas the age at breast development has declined by 1 year; thus, the time span from initiation of breast development to menarche has increased. This may indicate an oestrogen-like effect without concomitant central activation of the hypothalamic-pituitary axis. The effects may differ between boys and girls, as there are sex differences in age at onset of puberty, hormonal profiles and prevalence of precocius puberty.
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Clifford E, Nielsen M, Sørensen K, Rodgers M. Nitrogen dynamics and removal in a horizontal flow biofilm reactor for wastewater treatment. WATER RESEARCH 2010; 44:3819-3828. [PMID: 20537672 DOI: 10.1016/j.watres.2010.04.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Revised: 04/26/2010] [Accepted: 04/27/2010] [Indexed: 05/29/2023]
Abstract
A horizontal flow biofilm reactor (HFBR) designed for the treatment of synthetic wastewater (SWW) was studied to examine the spatial distribution and dynamics of nitrogen transformation processes. Detailed analyses of bulk water and biomass samples, giving substrate and proportions of ammonia oxidising bacteria (AOB) and nitrite oxidising bacteria (NOB) gradients in the HFBR, were carried out using chemical analyses, sensor rate measurements and molecular techniques. Based on these results, proposals for the design of HFBR systems are presented. The HFBR comprised a stack of 60 polystyrene sheets with 10-mm deep frustums. SWW was intermittently dosed at two points, Sheets 1 and 38, in a 2 to 1 volume ratio respectively. Removals of 85.7% COD, 97.4% 5-day biochemical oxygen demand (BOD(5)) and 61.7% TN were recorded during the study. In the nitrification zones of the HFBR, which were separated by a step-feed zone, little variation in nitrification activity was found, despite decreasing in situ ammonia concentrations. The results further indicate significant simultaneous nitrification and denitrification (SND) activity in the nitrifying zones of the HFBR. Sensor measurements showed a linear increase in potential nitrification rates at temperatures between 7 and 16 degrees C, and similar rates of nitrification were measured at concentrations between 1 and 20mg NH(4)-N/l. These results can be used to optimise HFBR reactor design. The HFBR technology could provide an alternative, low maintenance, economically efficient system for carbon and nitrogen removal for low flow wastewater discharges.
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Sørensen K, Koops WJ, Grossman M. Size Allometry in Mink ( Mustela vison) Selected for Feed Efficiency. ACTA AGR SCAND A-AN 2010. [DOI: 10.1080/09064700310002044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sørensen K, Grossman M, Koops WJ. Multiphasic Growth Curves in Mink ( Mustela vison) Selected for Feed Efficiency. ACTA AGR SCAND A-AN 2010. [DOI: 10.1080/09064700310002035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sørensen K. A Long-Term Investigation of a New Antirheumatic Drug, Diclofenac Sodium (Voltaren). Scand J Rheumatol 2009. [DOI: 10.3109/03009747809097222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Gautier DL, Bird KJ, Charpentier RR, Grantz A, Houseknecht DW, Klett TR, Moore TE, Pitman JK, Schenk CJ, Schuenemeyer JH, Sørensen K, Tennyson ME, Valin ZC, Wandrey CJ. Assessment of Undiscovered Oil and Gas in the Arctic. Science 2009; 324:1175-9. [DOI: 10.1126/science.1169467] [Citation(s) in RCA: 420] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Juul A, Sørensen K, Aksglaede L, Garn I, Rajpert-De Meyts E, Hullstein I, Hemmersbach P, Ottesen AM. A common deletion in the uridine diphosphate glucuronyltransferase (UGT) 2B17 gene is a strong determinant of androgen excretion in healthy pubertal boys. J Clin Endocrinol Metab 2009; 94:1005-11. [PMID: 19088161 DOI: 10.1210/jc.2008-1984] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Testosterone (T) is excreted in urine as water-soluble glucuronidated and sulfated conjugates. The ability to glucuronidate T and other steroids depends on a number of different glucuronidases (UGT) of which UGT2B17 is essential. The aim of the study was to evaluate the influence of UGT2B17 genotypes on urinary excretion of androgen metabolites in pubertal boys. STUDY DESIGN A clinical study of 116 healthy boys aged 8-19 yr. UGT2B17 genotyping was performed using quantitative PCR. Serum FSH, LH, T, estradiol (E2), and SHBG were analyzed by immunoassays, and urinary levels of androgen metabolites were quantitated by gas chromatography/mass spectrometry in all subjects. RESULTS Ten of 116 subjects (9%) presented with a homozygote deletion of the UGT2B17 gene (del/del), whereas 52 and 54 boys were hetero- and homozygous carriers of the UGT2B17 gene (del/ins and ins/ins), respectively. None of the reproductive hormones were affected by UGT2B17 genotype. In all subjects, mean urinary T/epitestosterone ratio was 1.56 [1.14 (SD); 0.1-6.9 (range)] and unaffected by age or pubertal stage. Subjects with homozygous deletions of UGT2B17 had significantly lower urinary levels of T and 5alpha- and 5beta-androstanediol. Mean urinary T/epitestosterone was significantly reduced in del/del subjects [0.29 (0.30); 0.1-1.0 (range), P < 0.0001]. CONCLUSION In pubertal boys, a common homozygous deletion in the UGT2B17 gene strongly affected urinary excretion pattern of androgen metabolites but did not influence circulating androgen levels.
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Okullo W, Ssenyonga T, Hamre B, Frette O, Sørensen K, Stamnes JJ, Steigen A, Stamnes K. Parameterization of the inherent optical properties of Murchison Bay, Lake Victoria. APPLIED OPTICS 2007; 46:8553-8561. [PMID: 18091964 DOI: 10.1364/ao.46.008553] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lake Victoria, Africa's largest freshwater lake, suffers greatly from negative changes in biomass of species of fish and also from severe eutrophication. The continuing deterioration of Lake Victoria's ecological functions has great long-term consequences for the ecosystem benefits it provides to the countries bordering its shores. However, knowledge about temporal and spatial variations of optical properties and how they relate to lake constituents is important for a number of reasons such as remote sensing, modeling of underwater light fields, and long-term monitoring of lake waters. Based on statistical analysis of data from optical measurements taken during half a year of weekly cruises in Murchison Bay, Lake Victoria, we present a three-component model for the absorption and a two-component model for the scattering of light in the UV and the visible regions of the solar spectrum along with tests of their ranges of validity. The three-component input to the model for absorption is the chlorophyll-a (Chl-a), total suspended materials concentrations, and yellow substance absorption, while the two-component input to the model for scattering is the Chl-a concentration and total suspended materials.
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Sørensen K, Andersson AM, Skakkebaek NE, Juul A. Serum sex hormone-binding globulin levels in healthy children and girls with precocious puberty before and during gonadotropin-releasing hormone agonist treatment. J Clin Endocrinol Metab 2007; 92:3189-96. [PMID: 17519314 DOI: 10.1210/jc.2007-0231] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
CONTEXT The regulation of SHBG is complex and influenced by sex steroids and insulin. OBJECTIVE Our objective was to describe serum levels and evaluate determinants of SHBG levels in healthy children and in girls with central precocious puberty (CPP) before and during GnRH analog (GnRHa) treatment. DESIGN We conducted a cross-sectional study on healthy subjects and a 2-yr longitudinal study in girls with CPP. SETTING The study took place at a tertiary referral center for pediatric endocrinology. PARTICIPANTS/PATIENTS A total of 903 healthy schoolchildren served as healthy subjects, and 25 girls with precocious/early puberty participated. INTERVENTIONS Girls with CPP were treated with the long-acting GnRHa triptorelin. RESULTS SHBG levels declined with increasing age in both sexes until adulthood. In healthy children, SHBG was significantly negatively correlated with testosterone, estradiol, dehydroepiandrosterone sulfate, and body mass index (BMI) in boys (total model R(2) = 0.71) but only with dehydroepiandrosterone sulfate and BMI in girls (total model R(2) = 0.26). Body fat percentage was significantly negatively correlated with SHBG levels (P < 0.001) in both boys (R(2) = 0.18) and girls (R(2) = 0.23). Girls with CPP had significantly lower pretreatment SHBG levels compared with age-matched controls [SHBG sd score, -1.29 (-4.48; 0.01)], which declined even further during GnRHa treatment [-2.75 (-5.9; 0.53); P < 0.001]. Even after adjustment for BMI and pubertal stage, girls with CPP had lower SHBG levels (P < 0.001) compared with healthy controls. CONCLUSIONS SHBG levels were strongly dependent on body composition and sex steroid levels in children with normal and precocious puberty. Studies on insulin sensitivity and SHBG in puberty are needed to better understand the interaction between body composition and gonadal maturation.
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McGill DJ, Sørensen K, MacKay IR, Taggart I, Watson SB. Assessment of burn depth: a prospective, blinded comparison of laser Doppler imaging and videomicroscopy. Burns 2007; 33:833-42. [PMID: 17614206 DOI: 10.1016/j.burns.2006.10.404] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2006] [Accepted: 10/27/2006] [Indexed: 11/19/2022]
Abstract
INTRODUCTION AND AIMS There is a need, both in clinical and research settings, for an affordable, objective method of assessing burn depth. This study compares burn depth assessment by videomicroscopy with laser Doppler imaging (LDI) in patients with dermal burns. The videomicroscope is inexpensive compared to LDI, and can visualise the dermal capillary structure, therefore potentially allowing objective assessment of dermal burn injuries. METHODS Patients admitted <72 h post-injury were included in the trial. Blinded LDI and videomicroscopy assessments were carried out. The patients were then followed up to one of three end-points: primary healing without surgery; early surgery; delayed healing and subsequent split skin grafting. The incidence of infection was also noted. RESULTS Twenty-seven burn wounds were examined. In superficial partial thickness injuries, the videomicroscope reliably demonstrated an intact or nearly intact dermal vascular structure, progressing through to large amounts of capillary destruction and haemoglobin deposition in deep partial thickness injuries and complete destruction in full thickness injuries. The videomicroscope findings correlated strongly with both those of the LDI (p<0.001) and with clinical outcome (p<0.001). DISCUSSION The videomicroscope is capable of accurately and objectively assessing burn depth. The results correlated well with both the clinical outcome and the laser Doppler findings. In addition, videomicroscopy is significantly cheaper than LDI and avoids several of the disadvantages of LDI.
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