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Ekanayake N, Spilatro M, Bolognesi A, Herman S, Sampat S, Hill EM, Dorrer C. Design and optimization of a high-energy optical parametric amplifier for broadband, spectrally incoherent pulses. Opt Express 2023; 31:17848-17860. [PMID: 37381508 DOI: 10.1364/oe.486561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 04/23/2023] [Indexed: 06/30/2023]
Abstract
Spectrally incoherent laser pulses with sufficiently large fractional bandwidth are in demand for the mitigation of laser-plasma instabilities occurring in high-energy laser-target interactions. Here, we modeled, implemented, and optimized a dual-stage high-energy optical parametric amplifier for broadband, spectrally incoherent pulses in the near-infrared. The amplifier delivers close to 400 mJ of signal energy through noncollinear parametric interaction of 100-nJ-scale broadband, spectrally incoherent seed pulses near 1053 nm with a narrowband high-energy pump operating at 526.5 nm. Mitigation strategies for high-frequency spatial modulations in the amplified signal caused by index inhomogeneities in the Nd:YLF rods of the pump laser are explored and discussed in detail.
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Wymant C, Bezemer D, Blanquart F, Ferretti L, Gall A, Hall M, Golubchik T, Bakker M, Ong SH, Zhao L, Bonsall D, de Cesare M, MacIntyre-Cockett G, Abeler-Dörner L, Albert J, Bannert N, Fellay J, Grabowski MK, Gunsenheimer-Bartmeyer B, Günthard HF, Kivelä P, Kouyos RD, Laeyendecker O, Meyer L, Porter K, Ristola M, van Sighem A, Berkhout B, Kellam P, Cornelissen M, Reiss P, Fraser C, Aubert V, Battegay M, Bernasconi E, Böni J, Braun DL, Bucher HC, Burton-Jeangros C, Calmy A, Cavassini M, Dollenmaier G, Egger M, Elzi L, Fehr J, Fellay J, Furrer H, Fux CA, Gorgievski M, Günthard H, Haerry D, Hasse B, Hirsch HH, Hoffmann M, Hösli I, Kahlert C, Kaiser L, Keiser O, Klimkait T, Kouyos R, Kovari H, Ledergerber B, Martinetti G, de Tejada BM, Marzolini C, Metzner K, Müller N, Nadal D, Nicca D, Pantaleo G, Rauch A, Regenass S, Rudin C, Schöni-Affolter F, Schmid P, Speck R, Stöckle M, Tarr P, Trkola A, Vernazza P, Weber R, Yerly S, van der Valk M, Geerlings SE, Goorhuis A, Hovius JW, Lempkes B, Nellen FJB, van der Poll T, Prins JM, Reiss P, van Vugt M, Wiersinga WJ, Wit FWMN, van Duinen M, van Eden J, Hazenberg A, van Hes AMH, Rajamanoharan S, Robinson T, Taylor B, Brewer C, Mayr C, Schmidt W, Speidel A, Strohbach F, Arastéh K, Cordes C, Pijnappel FJJ, Stündel M, Claus J, Baumgarten A, Carganico A, Ingiliz P, Dupke S, Freiwald M, Rausch M, Moll A, Schleehauf D, Smalhout SY, Hintsche B, Klausen G, Jessen H, Jessen A, Köppe S, Kreckel P, Schranz D, Fischer K, Schulbin H, Speer M, Weijsenfeld AM, Glaunsinger T, Wicke T, Bieniek B, Hillenbrand H, Schlote F, Lauenroth-Mai E, Schuler C, Schürmann D, Wesselmann H, Brockmeyer N, Jurriaans S, Gehring P, Schmalöer D, Hower M, Spornraft-Ragaller P, Häussinger D, Reuter S, Esser S, Markus R, Kreft B, Berzow D, Back NKT, Christl A, Meyer A, Plettenberg A, Stoehr A, Graefe K, Lorenzen T, Adam A, Schewe K, Weitner L, Fenske S, Zaaijer HL, Hansen S, Stellbrink HJ, Wiemer D, Hertling S, Schmidt R, Arbter P, Claus B, Galle P, Jäger H, Jä Gel-Guedes E, Berkhout B, Postel N, Fröschl M, Spinner C, Bogner J, Salzberger B, Schölmerich J, Audebert F, Marquardt T, Schaffert A, Schnaitmann E, Cornelissen MTE, Trein A, Frietsch B, Müller M, Ulmer A, Detering-Hübner B, Kern P, Schubert F, Dehn G, Schreiber M, Güler C, Schinkel CJ, Gunsenheimer-Bartmeyer B, Schmidt D, Meixenberger K, Bannert N, Wolthers KC, Peters EJG, van Agtmael MA, Autar RS, Bomers M, Sigaloff KCE, Heitmuller M, Laan LM, Ang CW, van Houdt R, Jonges M, Kuijpers TW, Pajkrt D, Scherpbier HJ, de Boer C, van der Plas A, van den Berge M, Stegeman A, Baas S, Hage de Looff L, Buiting A, Reuwer A, Veenemans J, Wintermans B, Pronk MJH, Ammerlaan HSM, van den Bersselaar DNJ, de Munnik ES, Deiman B, Jansz AR, Scharnhorst V, Tjhie J, Wegdam MCA, van Eeden A, Nellen J, Brokking W, Elsenburg LJM, Nobel H, van Kasteren MEE, Berrevoets MAH, Brouwer AE, Adams A, van Erve R, de Kruijf-van de Wiel BAFM, Keelan-Phaf S, van de Ven B, van der Ven B, Buiting AGM, Murck JL, de Vries-Sluijs TEMS, Bax HI, van Gorp ECM, de Jong-Peltenburg NC, de Mendonç A Melo M, van Nood E, Nouwen JL, Rijnders BJA, Rokx C, Schurink CAM, Slobbe L, Verbon A, Bassant N, van Beek JEA, Vriesde M, van Zonneveld LM, de Groot J, Boucher CAB, Koopmans MPG, van Kampen JJA, Fraaij PLA, van Rossum AMC, Vermont CL, van der Knaap LC, Visser E, Branger J, Douma RA, Cents-Bosma AS, Duijf-van de Ven CJHM, Schippers EF, van Nieuwkoop C, van Ijperen JM, Geilings J, van der Hut G, van Burgel ND, Leyten EMS, Gelinck LBS, Mollema F, Davids-Veldhuis S, Tearno C, Wildenbeest GS, Heikens E, Groeneveld PHP, Bouwhuis JW, Lammers AJJ, Kraan S, van Hulzen AGW, Kruiper MSM, van der Bliek GL, Bor PCJ, Debast SB, Wagenvoort GHJ, Kroon FP, de Boer MGJ, Jolink H, Lambregts MMC, Roukens AHE, Scheper H, Dorama W, van Holten N, Claas ECJ, Wessels E, den Hollander JG, El Moussaoui R, Pogany K, Brouwer CJ, Smit JV, Struik-Kalkman D, van Niekerk T, Pontesilli O, Lowe SH, Oude Lashof AML, Posthouwer D, van Wolfswinkel ME, Ackens RP, Burgers K, Schippers J, Weijenberg-Maes B, van Loo IHM, Havenith TRA, van Vonderen MGA, Kampschreur LM, Faber S, Steeman-Bouma R, Al Moujahid A, Kootstra GJ, Delsing CE, van der Burg-van de Plas M, Scheiberlich L, Kortmann W, van Twillert G, Renckens R, Ruiter-Pronk D, van Truijen-Oud FA, Cohen Stuart JWT, Jansen ER, Hoogewerf M, Rozemeijer W, van der Reijden WA, Sinnige JC, Brinkman K, van den Berk GEL, Blok WL, Lettinga KD, de Regt M, Schouten WEM, Stalenhoef JE, Veenstra J, Vrouenraets SME, Blaauw H, Geerders GF, Kleene MJ, Kok M, Knapen M, van der Meché IB, Mulder-Seeleman E, Toonen AJM, Wijnands S, Wttewaal E, Kwa D, van Crevel R, van Aerde K, Dofferhoff ASM, Henriet SSV, Ter Hofstede HJM, Hoogerwerf J, Keuter M, Richel O, Albers M, Grintjes-Huisman KJT, de Haan M, Marneef M, Strik-Albers R, Rahamat-Langendoen J, Stelma FF, Burger D, Gisolf EH, Hassing RJ, Claassen M, Ter Beest G, van Bentum PHM, Langebeek N, Tiemessen R, Swanink CMA, van Lelyveld SFL, Soetekouw R, van der Prijt LMM, van der Swaluw J, Bermon N, van der Reijden WA, Jansen R, Herpers BL, Veenendaal D, Verhagen DWM, Lauw FN, van Broekhuizen MC, van Wijk M, Bierman WFW, Bakker M, Kleinnijenhuis J, Kloeze E, Middel A, Postma DF, Schölvinck EH, Stienstra Y, Verhage AR, Wouthuyzen-Bakker M, Boonstra A, de Groot-de Jonge H, van der Meulen PA, de Weerd DA, Niesters HGM, van Leer-Buter CC, Knoester M, Hoepelman AIM, Arends JE, Barth RE, Bruns AHW, Ellerbroek PM, Mudrikova T, Oosterheert JJ, Schadd EM, van Welzen BJ, Aarsman K, Griffioen-van Santen BMG, de Kroon I, van Berkel M, van Rooijen CSAM, Schuurman R, Verduyn-Lunel F, Wensing AMJ, Bont LJ, Geelen SPM, Loeffen YGT, Wolfs TFW, Nauta N, Rooijakkers EOW, Holtsema H, Voigt R, van de Wetering D, Alberto A, van der Meer I, Rosingh A, Halaby T, Zaheri S, Boyd AC, Bezemer DO, van Sighem AI, Smit C, Hillebregt M, de Jong A, Woudstra T, Bergsma D, Meijering R, van de Sande L, Rutkens T, van der Vliet S, de Groot L, van den Akker M, Bakker Y, El Berkaoui A, Bezemer M, Brétin N, Djoechro E, Groters M, Kruijne E, Lelivelt KJ, Lodewijk C, Lucas E, Munjishvili L, Paling F, Peeck B, Ree C, Regtop R, Ruijs Y, Schoorl M, Schnörr P, Scheigrond A, Tuijn E, Veenenberg L, Visser KM, Witte EC, Ruijs Y, Van Frankenhuijsen M, Allegre T, Makhloufi D, Livrozet JM, Chiarello P, Godinot M, Brunel-Dalmas F, Gibert S, Trepo C, Peyramond D, Miailhes P, Koffi J, Thoirain V, Brochier C, Baudry T, Pailhes S, Lafeuillade A, Philip G, Hittinger G, Assi A, Lambry V, Rosenthal E, Naqvi A, Dunais B, Cua E, Pradier C, Durant J, Joulie A, Quinsat D, Tempesta S, Ravaux I, Martin IP, Faucher O, Cloarec N, Champagne H, Pichancourt G, Morlat P, Pistone T, Bonnet F, Mercie P, Faure I, Hessamfar M, Malvy D, Lacoste D, Pertusa MC, Vandenhende MA, Bernard N, Paccalin F, Martell C, Roger-Schmelz J, Receveur MC, Duffau P, Dondia D, Ribeiro E, Caltado S, Neau D, Dupont M, Dutronc H, Dauchy F, Cazanave C, Vareil MO, Wirth G, Le Puil S, Pellegrin JL, Raymond I, Viallard JF, Chaigne de Lalande S, Garipuy D, Delobel P, Obadia M, Cuzin L, Alvarez M, Biezunski N, Porte L, Massip P, Debard A, Balsarin F, Lagarrigue M, Prevoteau du Clary F, Aquilina C, Reynes J, Baillat V, Merle C, Lemoing V, Atoui N, Makinson A, Jacquet JM, Psomas C, Tramoni C, Aumaitre H, Saada M, Medus M, Malet M, Eden A, Neuville S, Ferreyra M, Sotto A, Barbuat C, Rouanet I, Leureillard D, Mauboussin JM, Lechiche C, Donsesco R, Cabie A, Abel S, Pierre-Francois S, Batala AS, Cerland C, Rangom C, Theresine N, Hoen B, Lamaury I, Fabre I, Schepers K, Curlier E, Ouissa R, Gaud C, Ricaud C, Rodet R, Wartel G, Sautron C, Beck-Wirth G, Michel C, Beck C, Halna JM, Kowalczyk J, Benomar M, Drobacheff-Thiebaut C, Chirouze C, Faucher JF, Parcelier F, Foltzer A, Haffner-Mauvais C, Hustache Mathieu M, Proust A, Piroth L, Chavanet P, Duong M, Buisson M, Waldner A, Mahy S, Gohier S, Croisier D, May T, Delestan M, Andre M, Zadeh MM, Martinot M, Rosolen B, Pachart A, Martha B, Jeunet N, Rey D, Cheneau C, Partisani M, Priester M, Bernard-Henry C, Batard ML, Fischer P, Berger JL, Kmiec I, Robineau O, Huleux T, Ajana F, Alcaraz I, Allienne C, Baclet V, Meybeck A, Valette M, Viget N, Aissi E, Biekre R, Cornavin P, Merrien D, Seghezzi JC, Machado M, Diab G, Raffi F, Bonnet B, Allavena C, Grossi O, Reliquet V, Billaud E, Brunet C, Bouchez S, Morineau-Le Houssine P, Sauser F, Boutoille D, Besnier M, Hue H, Hall N, Brosseau D, Souala F, Michelet C, Tattevin P, Arvieux C, Revest M, Leroy H, Chapplain JM, Dupont M, Fily F, Patra-Delo S, Lefeuvre C, Bernard L, Bastides F, Nau P, Verdon R, de la Blanchardiere A, Martin A, Feret P, Geffray L, Daniel C, Rohan J, Fialaire P, Chennebault JM, Rabier V, Abgueguen P, Rehaiem S, Luycx O, Niault M, Moreau P, Poinsignon Y, Goussef M, Mouton-Rioux V, Houlbert D, Alvarez-Huve S, Barbe F, Haret S, Perre P, Leantez-Nainville S, Esnault JL, Guimard T, Suaud I, Girard JJ, Simonet V, Debab Y, Schmit JL, Jacomet C, Weinberck P, Genet C, Pinet P, Ducroix S, Durox H, Denes É, Abraham B, Gourdon F, Antoniotti O, Molina JM, Ferret S, Lascoux-Combe C, Lafaurie M, Colin de Verdiere N, Ponscarme D, De Castro N, Aslan A, Rozenbaum W, Pintado C, Clavel F, Taulera O, Gatey C, Munier AL, Gazaigne S, Penot P, Conort G, Lerolle N, Leplatois A, Balausine S, Delgado J, Timsit J, Tabet M, Gerard L, Girard PM, Picard O, Tredup J, Bollens D, Valin N, Campa P, Bottero J, Lefebvre B, Tourneur M, Fonquernie L, Wemmert C, Lagneau JL, Yazdanpanah Y, Phung B, Pinto A, Vallois D, Cabras O, Louni F, Pialoux G, Lyavanc T, Berrebi V, Chas J, Lenagat S, Rami A, Diemer M, Parrinello M, Depond A, Salmon D, Guillevin L, Tahi T, Belarbi L, Loulergue P, Zak Dit Zbar O, Launay O, Silbermann B, Leport C, Alagna L, Pietri MP, Simon A, Bonmarchand M, Amirat N, Pichon F, Kirstetter M, Katlama C, Valantin MA, Tubiana R, Caby F, Schneider L, Ktorza N, Calin R, Merlet A, Ben Abdallah S, Weiss L, Buisson M, Batisse D, Karmochine M, Pavie J, Minozzi C, Jayle D, Castel P, Derouineau J, Kousignan P, Eliazevitch M, Pierre I, Collias L, Viard JP, Gilquin J, Sobel A, Slama L, Ghosn J, Hadacek B, Thu-Huyn N, Nait-Ighil L, Cros A, Maignan A, Duvivier C, Consigny PH, Lanternier F, Shoai-Tehrani M, Touam F, Jerbi S, Bodard L, Jung C, Goujard C, Quertainmont Y, Duracinsky M, Segeral O, Blanc A, Peretti D, Cheret A, Chantalat C, Dulucq MJ, Levy Y, Lelievre JD, Lascaux AS, Dumont C, Boue F, Chambrin V, Abgrall S, Kansau I, Raho-Moussa M, De Truchis P, Dinh A, Davido B, Marigot D, Berthe H, Devidas A, Chevojon P, Chabrol A, Agher N, Lemercier Y, Chaix F, Turpault I, Bouchaud O, Honore P, Rouveix E, Reimann E, Belan AG, Godin Collet C, Souak S, Mortier E, Bloch M, Simonpoli AM, Manceron V, Cahitte I, Hiraux E, Lafon E, Cordonnier F, Zeng AF, Zucman D, Majerholc C, Bornarel D, Uludag A, Gellen-Dautremer J, Lefort A, Bazin C, Daneluzzi V, Gerbe J, Jeantils V, Coupard M, Patey O, Bantsimba J, Delllion S, Paz PC, Cazenave B, Richier L, Garrait V, Delacroix I, Elharrar B, Vittecoq D, Bolliot C, Lepretre A, Genet P, Masse V, Perrone V, Boussard JL, Chardon P, Froguel E, Simon P, Tassi S, Avettand Fenoel V, Barin F, Bourgeois C, Cardon F, Chaix ML, Delfraissy JF, Essat A, Fischer H, Lecuroux C, Meyer L, Petrov-Sanchez V, Rouzioux C, Saez-Cirion A, Seng R, Kuldanek K, Mullaney S, Young C, Zucchetti A, Bevan MA, McKernan S, Wandolo E, Richardson C, Youssef E, Green P, Faulkner S, Faville R, Herman S, Care C, Blackman H, Bellenger K, Fairbrother K, Phillips A, Babiker A, Delpech V, Fidler S, Clarke M, Fox J, Gilson R, Goldberg D, Hawkins D, Johnson A, Johnson M, McLean K, Nastouli E, Post F, Kennedy N, Pritchard J, Andrady U, Rajda N, Donnelly C, McKernan S, Drake S, Gilleran G, White D, Ross J, Harding J, Faville R, Sweeney J, Flegg P, Toomer S, Wilding H, Woodward R, Dean G, Richardson C, Perry N, Gompels M, Jennings L, Bansaal D, Browing M, Connolly L, Stanley B, Estreich S, Magdy A, O'Mahony C, Fraser P, Jebakumar SPR, David L, Mette R, Summerfield H, Evans M, White C, Robertson R, Lean C, Morris S, Winter A, Faulkner S, Goorney B, Howard L, Fairley I, Stemp C, Short L, Gomez M, Young F, Roberts M, Green S, Sivakumar K, Minton J, Siminoni A, Calderwood J, Greenhough D, DeSouza C, Muthern L, Orkin C, Murphy S, Truvedi M, McLean K, Hawkins D, Higgs C, Moyes A, Antonucci S, McCormack S, Lynn W, Bevan M, Fox J, Teague A, Anderson J, Mguni S, Post F, Campbell L, Mazhude C, Russell H, Gilson R, Carrick G, Ainsworth J, Waters A, Byrne P, Johnson M, Fidler S, Kuldanek K, Mullaney S, Lawlor V, Melville R, Sukthankar A, Thorpe S, Murphy C, Wilkins E, Ahmad S, Green P, Tayal S, Ong E, Meaden J, Riddell L, Loay D, Peacock K, Blackman H, Harindra V, Saeed AM, Allen S, Natarajan U, Williams O, Lacey H, Care C, Bowman C, Herman S, Devendra SV, Wither J, Bridgwood A, Singh G, Bushby S, Kellock D, Young S, Rooney G, Snart B, Currie J, Fitzgerald M, Arumainayyagam J, Chandramani S. A highly virulent variant of HIV-1 circulating in the Netherlands. Science 2022; 375:540-545. [PMID: 35113714 DOI: 10.1126/science.abk1688] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We discovered a highly virulent variant of subtype-B HIV-1 in the Netherlands. One hundred nine individuals with this variant had a 0.54 to 0.74 log10 increase (i.e., a ~3.5-fold to 5.5-fold increase) in viral load compared with, and exhibited CD4 cell decline twice as fast as, 6604 individuals with other subtype-B strains. Without treatment, advanced HIV-CD4 cell counts below 350 cells per cubic millimeter, with long-term clinical consequences-is expected to be reached, on average, 9 months after diagnosis for individuals in their thirties with this variant. Age, sex, suspected mode of transmission, and place of birth for the aforementioned 109 individuals were typical for HIV-positive people in the Netherlands, which suggests that the increased virulence is attributable to the viral strain. Genetic sequence analysis suggests that this variant arose in the 1990s from de novo mutation, not recombination, with increased transmissibility and an unfamiliar molecular mechanism of virulence.
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Affiliation(s)
- Chris Wymant
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | | | - François Blanquart
- Centre for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS, INSERM, PSL Research University, Paris, France.,IAME, UMR 1137, INSERM, Université de Paris, Paris, France
| | - Luca Ferretti
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Astrid Gall
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Matthew Hall
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Tanya Golubchik
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Margreet Bakker
- Laboratory of Experimental Virology, Department of Medical Microbiology and Infection Prevention, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands
| | - Swee Hoe Ong
- Wellcome Sanger Institute, Wellcome Genome Campus, Cambridge, UK
| | - Lele Zhao
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - David Bonsall
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,Wellcome Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Mariateresa de Cesare
- Wellcome Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - George MacIntyre-Cockett
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,Wellcome Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Lucie Abeler-Dörner
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Jan Albert
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - Norbert Bannert
- Division for HIV and Other Retroviruses, Department of Infectious Diseases, Robert Koch Institute, Berlin, Germany
| | - Jacques Fellay
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Swiss Institute of Bioinformatics, Lausanne, Switzerland.,Precision Medicine Unit, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - M Kate Grabowski
- Department of Pathology, John Hopkins University, Baltimore, MD, USA
| | | | - Huldrych F Günthard
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, Zurich, Switzerland.,Institute of Medical Virology, University of Zurich, Zurich, Switzerland
| | - Pia Kivelä
- Department of Infectious Diseases, Helsinki University Hospital, Helsinki, Finland
| | - Roger D Kouyos
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, Zurich, Switzerland.,Institute of Medical Virology, University of Zurich, Zurich, Switzerland
| | | | - Laurence Meyer
- INSERM CESP U1018, Université Paris Saclay, APHP, Service de Santé Publique, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - Kholoud Porter
- Institute for Global Health, University College London, London, UK
| | - Matti Ristola
- Department of Infectious Diseases, Helsinki University Hospital, Helsinki, Finland
| | | | - Ben Berkhout
- Laboratory of Experimental Virology, Department of Medical Microbiology and Infection Prevention, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands
| | - Paul Kellam
- Kymab Ltd., Cambridge, UK.,Department of Infectious Diseases, Faculty of Medicine, Imperial College London, London, UK
| | - Marion Cornelissen
- Laboratory of Experimental Virology, Department of Medical Microbiology and Infection Prevention, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands.,Molecular Diagnostic Unit, Department of Medical Microbiology and Infection Prevention, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands
| | - Peter Reiss
- Stichting HIV Monitoring, Amsterdam, Netherlands.,Department of Global Health, Amsterdam University Medical Centers, University of Amsterdam and Amsterdam Institute for Global Health and Development, Amsterdam, Netherlands
| | - Christophe Fraser
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,Wellcome Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK
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3
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Sałaga-Zaleska K, Pikul P, Kreft E, Herman S, Chyła G, Dąbkowski K, Kuchta A, Lenartowicz M, Jankowski M. Effect of suramin on urinary excretion of diabetes-induced glomerular and tubular injury parameters in rats. Biomed Pharmacother 2021; 139:111683. [PMID: 34243631 DOI: 10.1016/j.biopha.2021.111683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 11/18/2022] Open
Abstract
Diabetes mellitus causes changes in metabolism of extracellular nucleotides acting through P2 receptors (P2Rs). This affects renal function and may lead to glomerular and tubular disturbances. We measured urinary excretion of nucleotides (ATP, ADP, AMP, UTP, UDP, UMP) in streptozotocin-induced diabetic rats (65 mg/kg, i.p., day 0) and the effects of P2Rs' blockade by suramin (10 mg/kg, i.p., days +7, +14) on glomerular P2×7R expression and urinary excretion of glomerular (albumin, nephrin) and tubular (KIM-1, NGAL) injury markers, electrolytes, and oxidative stress markers (TBARS, 8-OHdG). Concentrations of nucleotides, specific proteins, electrolytes, and oxidative stress markers in 24-h urine samples collected in metabolic cages at days -1, +6 and +20 were measured using ion-paired reversed-phase HPLC, immunoenzymatic and fluorometric methods, and flame photometry, respectively. Expression of KIM-1 and P2×7R was examined by immunohistochemistry or immunoblotting. Diabetes was associated with increased urinary excretion of ATP, ADP, UTP, UDP and glomerular P2×7R expression. Suramin attenuated P2×7R expression but did not affect urinary excretion of nucleotides. Urinary excretion of albumin, nephrin, NGAL, and 8-OHdG were increased in diabetic rats and were not affected by suramin. TBARS was higher in diabetic rats and suramin attenuated the excretion dynamics in this group. KIM-1 excretion was higher in diabetic rats and suramin further increased excretion of KIM-1 in both diabetic and non-diabetic rats. Furthermore, suramin attenuated the diabetes-induced natriuresis and kaliuresis. It is possible that suramin affects both glomerular and tubular functions in diabetic rats.
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Affiliation(s)
- K Sałaga-Zaleska
- Department of Clinical Chemistry, Medical University of Gdansk, Dębinki 7, 80-210, Poland
| | - P Pikul
- Clinical Laboratory University Clinical Center in Gdansk, 80-211 Gdańsk, Poland
| | - E Kreft
- Department of Clinical Chemistry, Medical University of Gdansk, Dębinki 7, 80-210, Poland
| | - S Herman
- Laboratory of Genetics and Evolutionism, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland
| | - G Chyła
- Department of Clinical Chemistry, Medical University of Gdansk, Dębinki 7, 80-210, Poland
| | - K Dąbkowski
- Department of Clinical Chemistry, Medical University of Gdansk, Dębinki 7, 80-210, Poland
| | - A Kuchta
- Department of Clinical Chemistry, Medical University of Gdansk, Dębinki 7, 80-210, Poland
| | - M Lenartowicz
- Laboratory of Genetics and Evolutionism, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland
| | - M Jankowski
- Department of Clinical Chemistry, Medical University of Gdansk, Dębinki 7, 80-210, Poland.
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4
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Perets N, Oron O, Herman S, Elliott E, Offen D. Exosomes derived from mesenchymal stem cells improved core symptoms of genetically modified mouse model of autism Shank3B. Mol Autism 2020; 11:65. [PMID: 32807217 PMCID: PMC7433169 DOI: 10.1186/s13229-020-00366-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 07/22/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Partial or an entire deletion of SHANK3 are considered as major drivers in the Phelan-McDermid syndrome, in which 75% of patients are diagnosed with autism spectrum disorder (ASD). During the recent years, there was an increasing interest in stem cell therapy in ASD, and specifically, mesenchymal stem cells (MSC). Moreover, it has been suggested that the therapeutic effect of the MSC is mediated mainly via the secretion of small extracellular vesicle that contains important molecular information of the cell and are used for cell-to-cell communication. Within the fraction of the extracellular vesicles, exosomes were highlighted as the most effective ones to convey the therapeutic effect. METHODS Exosomes derived from MSC (MSC-exo) were purified, characterized, and given via intranasal administration to Shank3B KO mice (in the concentration of 107 particles/ml). Three weeks post treatment, the mice were tested for behavioral scoring, and their results were compared with saline-treated control and their wild-type littermates. RESULTS Intranasal treatment with MSC-exo improves the social behavior deficit in multiple paradigms, increases vocalization, and reduces repetitive behaviors. We also observed an increase of GABARB1 in the prefrontal cortex. CONCLUSIONS Herein, we hypothesized that MSC-exo would have a direct beneficial effect on the behavioral autistic-like phenotype of the genetically modified Shank3B KO mouse model of autism. Taken together, our data indicate that intranasal treatment with MSC-exo improves the core ASD-like deficits of this mouse model of autism and therefore has the potential to treat ASD patients carrying the Shank3 mutation.
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Affiliation(s)
- N Perets
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel.
| | - O Oron
- Faculty of Medicine, Bar Ilan University, Tzfat, Israel
| | - S Herman
- Sacklar School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - E Elliott
- Faculty of Medicine, Bar Ilan University, Tzfat, Israel
| | - D Offen
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel.,Sacklar School of Medicine, Tel Aviv University, Tel Aviv, Israel
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5
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Ogórek M, Herman S, Pierzchała O, Bednarz A, Rajfur Z, Baster Z, Grzmil P, Starzyński RR, Szudzik M, Jończy A, Lipiński P, Lenartowicz M. Molecular machinery providing copper bioavailability for spermatozoa along the epididymial tubule in mouse. Biol Reprod 2020; 100:1505-1520. [PMID: 30997485 DOI: 10.1093/biolre/ioz028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 11/15/2018] [Accepted: 02/18/2019] [Indexed: 01/01/2023] Open
Abstract
Progressive functional maturation of spermatozoa is completed during the transit of these cells through the epididymis, a tubule structure connecting a testicle to a vas deferens. Epididymal epithelial cells by means of their secretory and absorptive functions determine a highly specialized luminal microenvironment containing multiple organic and inorganic components. The latter include copper ions, which due to their redox properties are indispensable for critical homeostatic processes occurring in spermatozoa floating in different part of epididymis but can be potentially toxic. Main purpose of our study was to determine epididymal region-dependent expression and localization of copper transporters ensuring a tight control of copper concentration in epididymal fluid. We also aimed at identifying proteins responsible for copper uptake by spermatozoa and verifying whether this process is coordinated with copper supply to superoxide dismutase 1 (SOD1), a copper-dependent antioxidant enzyme. Our study identifies two ATPases-ATP7A, ATP7B and Slc31a1, major copper importers/exporters depending on their differential expression on epididymal polarized epithelial cells of the caput, corpus, and cauda. Next, ceruloplasmin seems to be a chief protein transporting copper in the epididymal fluid and providing this biometal to spermatozoa. The entry of copper to germ cells is mediated by Slc31a1 and is correlated with both expressions of copper chaperone for superoxide dismutase (CCS), copper chaperone directly providing copper ions to SOD1 and with the expression and activity of the latter. Our results outline a network of cooperating copper binding proteins expressed in epididymal epithelium and in spermatozoa that orchestrate bioavailability of this microelement for gametes and protect them against copper toxicity.
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Affiliation(s)
- M Ogórek
- Department of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - S Herman
- Department of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - O Pierzchała
- Department of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - A Bednarz
- Department of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Z Rajfur
- Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Kraków, Poland
| | - Z Baster
- Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Kraków, Poland
| | - P Grzmil
- Department of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - R R Starzyński
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
| | - M Szudzik
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
| | - A Jończy
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
| | - P Lipiński
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
| | - M Lenartowicz
- Department of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
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Abstract
The fortification of various types of food with minerals is often undertaken without consideration of either their bioavailability or the potential nutrient-nutrient interactions resulting from their use. Stable isotopes provide a safe and accessible method of resolving these issues by providing the proper evidence in each case. They must be conducted according to strict safety and ethical guidelines and may be readily conducted in a field setting. Clinical studies in children enable researchers, policymakers, and food manufacturers to obtain the data necessary to determine the best way to fortify specific foods and beverages, in order to optimally enhance the nutritional health of growing children. We have shown the utility of this approach in studies in both developing countries and in the United States.
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Affiliation(s)
- S. A. Abrams
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine in Houston, Texas, USA
| | - I. J. Griffin
- Nutrition Research and Development Center in Bogor, Indonesia
| | - S. Herman
- Nutrition Research and Development Center in Bogor, Indonesia
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7
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Schmitt F, Aurlien H, Brøgger J, Hirsch L, Schomer D, Trinka E, Pressler R, Wennberg R, Visser G, Eisermann M, Diehl B, Lesser R, Kaplan P, The Tich S, Lee J, Martins-da-Silva A, Stefan H, Neufeld M, Rubboli G, Fabricius M, Gardella E, Terney D, Meritam P, Eichele T, Asano E, Cox F, van Emde Boas W, Mameniskiene R, Marusic P, Zárubová J, Rosén I, Fuglsang-Frederiksen A, Ikeda A, MacDonald D, Terada K, Ugawa Y, Zhou D, Herman S, Beniczky S. Standardisierter Computer-basiert-organisierter Report des EEG (SCORE) – Eine strukturierende Form der EEG-Befundung. KLIN NEUROPHYSIOL 2018. [DOI: 10.1055/s-0043-125304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
ZusammenfassungEine 2013 von der „International Federation of Clinical Neurophysiology“ gegründete Taskforce hat eine international konsensfähige EEG-Terminologie entwickelt. Im Folgenden soll das Resultat – die 2. Version des Standardized Computer-based Organized Reporting of EEG (SCORE) - vorgestellt werden. Die Terminologie wurde im Rahmen eines Softwarepaketes (SCORE-EEG) in der klinischen Praxis an über 12.000 EEGs getestet. Die Auswahl der Begriffe ist kontextabhängig: die initiale Auswahl bestimmt, welche weiteren Auswahlmöglichkeiten zur Verfügung stehen. Im Verlauf wird automatisch ein Befund erstellt und dessen Einzelmerkmale in eine Datenbank eingespeist. SCORE verfügt über Module spezifisch für die Befundung epileptischer Anfälle, sowie charakteristischer neonataler und intensivmedizinische EEG-Merkmale. SCORE ist nicht nur ein nützliches Werkzeug im ambulanten, klinischen und wissenschaftlichen Setting, es erleichtert auch Qualitätssicherung, Datenaustausch und die EEG-Aus und Weiterbildung.
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Affiliation(s)
- F Schmitt
- Universitätsklinik für Neurologie, Otto-von-Guericke Universität, Magdeburg, Deutschland
| | - H Aurlien
- Department of Neurology, Haukeland University Hospital and Department of Clinical Medicine, University of Bergen, Bergen, Norwegen
| | - J Brøgger
- Department of Neurology, Haukeland University Hospital and Department of Clinical Medicine, University of Bergen, Bergen, Norwegen
| | - L Hirsch
- Comprehensive Epilepsy Center, Yale University School of Medicine, New Haven, CT, USA
| | - D Schomer
- Department of Neurology, Laboratory of Clinical Neurophysiology, Beth Israel Deaconess Medical Center, Harvard University, Boston, MA, USA
| | - E Trinka
- Universitätskliniklinik für Neurologie, Christian Doppler Klinik, Paracelsus Medizinische Universität und Zentrum für Kognitive Neurowissenschaften Salzburg, Österreich und Institut für Public Health, Versorgungsforschung & HTA, UMIT, Hall in Tirol, Österreich
| | - R Pressler
- Department of Clinical Neurophysiology, Great Ormond Street Hospital und Clinical Neuroscience, UCL Great Ormond Street Institute of Child Health, London, Großbritannien
| | - R Wennberg
- Krembil Neuroscience Centre, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Kanada
| | - G Visser
- Department of Clinical Neurophysiology, Stichting Epilepsie Instellingen Nederland (SEIN), Niederlande
| | - M Eisermann
- Department of Clinical Neurophysiology, Necker Enfants Malades Hospital, Paris, Frankreich und INSERM U1129, Paris, France, Paris Descartes University, CEA, Gif sur Yvette, Paris, Frankreich
| | - B Diehl
- University College London, Department of Clinical and Experimental Epilepsy, Queen Square, London, Großbritannien
| | - R Lesser
- Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - P Kaplan
- Johns Hopkins University School of Medicine, Baltimore, Maryland, MD, USA
| | - S The Tich
- Department of Pediatric Neurology, University Hospital of Lille, Lille, Frankreich
| | - J Lee
- Department of Neurology, Brigham and Women’s Hospital, Boston, MA, USA
| | - A Martins-da-Silva
- Department of Neurophysiology, Hospital Santo António and UMIB/ICBAS – University of Porto, Porto, Portugal
| | - H Stefan
- Abteilung für Neurologie und Biomagnetismus, Universitätsklinikum Erlangen, Deutschland
| | - M Neufeld
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - G Rubboli
- Department of Neurology, Danish Epilepsy Center, Dianalund and University of Copenhagen, Kopenhagen, Dänemark
| | - M Fabricius
- Department of Clinical Neurophysiology, Rigshospitalet, Kopenhagen, Dänemark
| | - E Gardella
- University of Southern Denmark, Odense, Dänemark
- Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Dänemark
| | - D Terney
- Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Dänemark
| | - P Meritam
- Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Dänemark
| | - T Eichele
- Department of Neurology, Haukeland University Hospital and Department of Biological and Medical Psychology, University of Bergen, Norwegen
| | - E Asano
- Departments of Pediatrics and Neurology, Children’s Hospital of Michigan, Wayne State University, Detroit, Michigan, US
| | - F Cox
- Department of Clinical Neurophysiology, Stichting Epilepsie Instellingen Nederland (SEIN), Niederlande
| | - W van Emde Boas
- Department of Clinical Neurophysiology, Stichting Epilepsie Instellingen Nederland (SEIN), Niederlande
| | - R Mameniskiene
- Department of Neurology and Neurosurgery, Center for Neurology, Vilnius University, Vilnius, Litauen
| | - P Marusic
- Department of Neurology, Charles University, 2nd Faculty of Medicine, Motol University Hospital, Tschechische Republik
| | - J Zárubová
- Department of Neurology, Charles University, 2nd Faculty of Medicine, Motol University Hospital, Tschechische Republik
| | - I Rosén
- Department of Clinical Sciences, University of Lund, Lund, Schweden
| | | | - A Ikeda
- Department of Epilepsy, Movement Disorders and Physiology Kyoto University Graduate School of Medicine Shogoin, Sakyo-ku Kyoto, Japan
| | - D MacDonald
- Department of Neurosciences, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabien
| | - K Terada
- Department of Neurology, Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka, Japan
| | - Y Ugawa
- Department of Neurology, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - D Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - S Herman
- Department of Neurology, Laboratory of Clinical Neurophysiology, Beth Israel Deaconess Medical Center, Harvard University, Boston, MA, USA
| | - S Beniczky
- Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Dänemark
- Department of Clinical Neurophysiology, Aarhus University, Aarhus, Dänemark
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Herman S, Lisowska G, Herman J, Wojtyna E, Misiołek M. Genuine halitosis in patients with dental and laryngological etiologies of mouth odor: severity and role of oral hygiene behaviors. Eur J Oral Sci 2018; 126:101-109. [PMID: 29392764 DOI: 10.1111/eos.12404] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aims of the study were to determine the severity of halitosis and the association between oral hygiene practices and the severity of malodor in patients with dental and laryngological etiologies of genuine halitosis. Thirty-five laryngological and 40 dental patients with halitosis completed a structured interview and underwent laryngological and dental examinations. Halitosis was assessed using organoleptic and halimeter tests. Greater halitosis severity in laryngological patients was associated with worse clinical status of the palatine tonsils, less frequent toothbrushing, less frequent use of tongue cleaners, fewer daily meals, and increased use of mouthrinses. Among dental patients, more severe halitosis was associated with worse clinical status of the periodontium, more tongue coating, less saliva secretion, and less frequent use of dental floss, interdental toothbrushes, and tongue cleaners. Oral hygiene was found to be a key moderator of the relationship between status of the periodontium or tonsils and severity of halitosis. The severity of halitosis in laryngological patients and dental patients is essentially similar; however, oral hygiene routines are associated with different effects in each group. Consequently, individual recommendations for patients with halitosis should be adjusted for the underlying disease and emphasize the role of effective specific hygiene behaviors.
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Affiliation(s)
| | - Grażyna Lisowska
- Clinical Department of Otolaryngology in Zabrze, Medical University of Silesia in Katowice, Zabrze, Poland
| | | | - Ewa Wojtyna
- Institute of Psychology, University of Silesia in Katowice, Katowice, Poland
| | - Maciej Misiołek
- Clinical Department of Otolaryngology in Zabrze, Medical University of Silesia in Katowice, Zabrze, Poland
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Lefevre N, Klouche S, de Pamphilis O, Herman S, Gerometta A, Bohu Y. Peri-articular local infiltration analgesia versus femoral nerve block for postoperative pain control following anterior cruciate ligament reconstruction: Prospective, comparative, non-inferiority study. Orthop Traumatol Surg Res 2016; 102:873-877. [PMID: 27720193 DOI: 10.1016/j.otsr.2016.07.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/20/2016] [Accepted: 07/05/2016] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Femoral nerve block (FNB) is considered as a major advance in anterior cruciate ligament (ACL) reconstruction as it reduces the need for parenteral opioids. However, the incidence of transient or even permanent neurological deficits due to the FNB is estimated at 1.94% after knee surgery. The primary objective of this study was to compare local infiltration analgesia (LIA) to FNB during ACL reconstruction procedures. The study hypothesis was that LIA was not less effective than FNB on early postoperative pain. PATIENTS AND METHODS A retrospective analysis of data collected prospectively in the FAST cohort included a series of continuous patients who underwent primary repair for isolated ACL with a hamstring graft in 2013-2014. Changes in our anesthesia practices over time allowed us to form three successive groups: Group 1 - FNB, Group 2 - FNB+LIA, Group 3 - LIA only. Ultrasound-guided FNB was done pre-operatively. The LIA was done at the end of the procedure by the surgeon with systematic infiltration of all skin incisions and the hamstring donor site; no intra-articular injections were performed. The primary endpoint was the average early postoperative pain (Days 0-3) described by the patient on a visual analogue scale (0-10). Sample size calculation pointed to 36 subjects being needed per group for a non-inferiority study. RESULTS The study involved 126 patients: G1=42, G2=38, G3=46. The patients were comparable at enrolment. The average early postoperative pain levels were 3.1±2.4, 2.8±2.0 and 2.5±2.2, respectively (P=0.66). A trend toward higher intake of tramadol was noted in the LIA group on D0 to D3, with a significant trend test on Day 1 (P=0.03) and Day 2 (P=0.02). CONCLUSION After reconstruction of isolated ACL tears with a hamstring graft, FNB is not more effective than LIA on patients' early postoperative pain. Patients who received a FNB consumed significantly less opioid-like analgesics. LEVEL OF EVIDENCE III - Prospective, comparative, non-randomized study.
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Affiliation(s)
- N Lefevre
- Clinique du Sport, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France.
| | - S Klouche
- Clinique du Sport, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France
| | | | - S Herman
- Clinique du Sport, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France
| | - A Gerometta
- Clinique du Sport, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France
| | - Y Bohu
- Clinique du Sport, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France
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Bohu Y, Klouche S, Gerometta A, Herman S, Lefevre N. Outpatient Latarjet surgery for gleno-humeral instability: Prospective comparative assessment of feasibility and safety. Orthop Traumatol Surg Res 2016; 102:507-12. [PMID: 26944815 DOI: 10.1016/j.otsr.2015.12.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 10/21/2015] [Accepted: 12/23/2015] [Indexed: 02/02/2023]
Abstract
BACKGROUND Some surgical procedures are rarely done on an outpatient basis. The primary objective of this study was to assess the safety of outpatient surgical shoulder stabilisation using the Latarjet procedure. HYPOTHESIS The Latarjet procedure is safe when performed on an outpatient basis provided the patients are managed according to a specifically designed programme starting at the decision to undergo surgery and ending at the end of the early postoperative period. PATIENTS AND METHODS Consecutive patients with unidirectional anterior shoulder instability managed in 2013-2014 by primary open, minimally invasive surgery involving coracoid process transfer as described by Latarjet was included prospectively. One of the surgeons routinely offered outpatient surgery to patients who met none of the usual exclusion criteria (age>60years, ASA 3-4, and long distance from home to hospital). Standardised protocols were applied for anaesthesia and analgesia. The primary evaluation criterion was failure of the admission modality, defined as inpatient admission of a patient after outpatient surgery either without prior discharge or within 1week after discharge. Secondary evaluation criteria were early postoperative symptoms and functional outcomes after at least 1year. All self-reported criteria were entered online by the patients. RESULTS Of 46 included patients, 17 had outpatient surgery and 29 inpatient surgery. There were 41 males and 5 females, with a mean age of 25.3±6.4years. No significant baseline differences were found between the two groups. None of the outpatients required inpatient admission or readmission. No postoperative complications were recorded. After a mean follow-up of 18.5±5.2months, the two groups showed no significant differences for return to sports, apprehension, avoidance behaviours, or functional outcomes. Most patients were satisfied with their management and outcomes. CONCLUSION No serious adverse events were recorded in this first French prospective evaluation of the safety of open, minimally invasive shoulder stabilisation by the Latarjet procedure performed on an outpatient basis. Thus, in selected patients, the risks of outpatient surgery are similar to those of inpatient surgery. LEVEL OF EVIDENCE III, prospective, comparative, non-randomised study.
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Affiliation(s)
- Y Bohu
- Clinique du sport Paris V, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France.
| | - S Klouche
- Clinique du sport Paris V, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France
| | - A Gerometta
- Clinique du sport Paris V, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France
| | - S Herman
- Clinique du sport Paris V, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France
| | - N Lefevre
- Clinique du sport Paris V, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France
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Fischer A, Herman S, von Dalwigk K, Kiener H, Steiner G. A7.15 in vitrosilencing of HNRNP-A2/B1 in synovial fibroblasts reveals involvement in regulation of several signal transduction pathways. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-209124.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Laborie M, Klouche S, Herman S, Gerometta A, Lefevre N, Bohu Y. Inefficacy of Kinesio-Taping(®) on early postoperative pain after ACL reconstruction: Prospective comparative study. Orthop Traumatol Surg Res 2015; 101:963-7. [PMID: 26589192 DOI: 10.1016/j.otsr.2015.09.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 09/09/2015] [Accepted: 09/17/2015] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Kinesio-Taping(®) (K-Tape) is used in sports traumatology with the aim of reducing pain and improving blood and lymph circulation. The main objective of the present study was to assess the efficacy of K-Tape on early postoperative pain after anterior cruciate ligament (ACL) reconstruction. The study hypothesis was that K-Tape significantly decreases pain. METHOD A prospective non-randomized comparative study was conducted in 2013-2014 and included all patients who underwent primary ACL reconstruction by hamstring graft. Analgesia was standardized. Two groups, "K-Tape" and "controls", were formed according to the days on which the study physiotherapist was present. The K-Tape compression/decompression assembly was applied immediately postoperatively and maintained for 3days. Patients filled out online questionnaires. The main assessment criterion was mean postoperative pain (D0-D3) on a 0-to-10 scale. Secondary criteria were analgesia intake on the three WHO levels, awakening during the night of D0 due to pain, signs of postoperative discomfort, and patient satisfaction. RESULTS Sixty patients (30 per group) were included, 57 of whom could be assessed: 28 K-Tape, 29 controls; 44 male, 13 female; mean age, 30.9±8.9 years. At inclusion, the two groups were comparable. There was no significant difference in mean (D0-D3) knee pain intensity: 3.8±2.2 for K-Tape, and 3.9±2 for controls (P=0.93). Analysis of variance (ANOVA) found no significant intergroup difference in evolution of pain (P=0.34). There were no other significant differences on the other assessment criteria. CONCLUSION K-Tape showed no efficacy on early postoperative pain following ACL reconstruction. LEVEL OF EVIDENCE III; prospective non-randomized comparative study.
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Affiliation(s)
- M Laborie
- Physiotherapy office, 94210 La Varenne-Saint-Hilaire, France
| | - S Klouche
- Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique du sport Paris V, 75005 Paris, France
| | - S Herman
- Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique du sport Paris V, 75005 Paris, France
| | - A Gerometta
- Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique du sport Paris V, 75005 Paris, France
| | - N Lefevre
- Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique du sport Paris V, 75005 Paris, France
| | - Y Bohu
- Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique du sport Paris V, 75005 Paris, France.
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Bohu Y, Klouche S, Lefevre N, Webster K, Herman S. Translation, cross-cultural adaptation and validation of the French version of the Anterior Cruciate Ligament-Return to Sport after Injury (ACL-RSI) scale. Knee Surg Sports Traumatol Arthrosc 2015; 23:1192-6. [PMID: 24676789 DOI: 10.1007/s00167-014-2942-4] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 03/09/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE The aim of this study was to translate, adapt and validate in French the Anterior Cruciate Ligament-Return to Sport after Injury (ACL-RSI), a 12-item English language scale assessing the psychological impact of returning to sports after ACL reconstruction. METHODS The ACL-RSI scale was forward and back translated, cross-culturally adapted and validated using international guidelines. The study population included all patients who were active in sports and underwent primary arthroscopic ACL reconstruction. The control group included subjects with no history of knee trauma. At the 6-month follow-up, the study population completed the ACL-RSI scale twice within 3-4 days, Knee injury and Osteoarthritis Outcome Score (KOOS) and subjective International Knee Documentation Committee (IKDC) scores. Statistical tests assessed the construct validity, discriminant validity, internal consistency, reliability and feasibility of the ACL-RSI scale. RESULTS Ninety-one patients with ACL tears and 98 control subjects were included: mean age 31.7 ± 8.1 and 21.8 ± 2, respectively. The ACL-RSI scores were correlated with all KOOS sub-categories (r = 0.22-0.64, p < 0.05) as well as the subjective IKDC score (r = 0.42, p < 0.00001). The mean scores of the study and control groups were significantly different (62.8 ± 19.4 vs. 89.6 ± 11.5, p < 0.00001), and scores were significantly better in patients who returned to the same sport (72.1 ± 21.4 vs. 60.3 ± 18.1, p = 0.008). Internal consistency was high (α = 0.96). Test-retest reproducibility was excellent: ρ = 0.90 (0.86-0.94), p < 0.00001. Administration time was 1.32 ± 0.7 mn, and all items were answered. CONCLUSION This study showed that the cross-cultural adaptation of the English version of the ACL-RSI was successful and validated in a French-speaking population. The discriminant capacity of the scale between patients who underwent reconstruction and healthy subjects was confirmed. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Y Bohu
- Institut de l'Appareil Locomoteur Nollet, Paris, France
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Lefevre N, Klouche S, de Pamphilis O, Devaux C, Herman S, Bohu Y. Postoperative discomfort after outpatient anterior cruciate ligament reconstruction: a prospective comparative study. Orthop Traumatol Surg Res 2015; 101:163-6. [PMID: 25666422 DOI: 10.1016/j.otsr.2014.07.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 07/16/2014] [Accepted: 07/30/2014] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The principal objective of the present study was to compare rates of postoperative discomfort after anterior cruciate ligament (ACL) reconstruction between inpatient (In) and outpatient (Out) management. PATIENTS AND METHOD A single-surgeon non-randomized prospective comparative study included patients undergoing primary surgery for isolated ACL tear by short hamstring graft in 2012-13. The Out group comprised patients eligible for and consenting to outpatient surgery and the In group, those not eligible or not consenting. The principal assessment criterion was onset of at least 1 symptom of postoperative discomfort (SPD): anxiety, nausea and vomiting, malaise, vertigo or stomach pain, between postoperative days 0 and 3. Secondary assessment criteria were difficulty in getting to sleep, getting up during the night, regular walking or going out, number of episodes of knee pain and waking because of pain. All criteria were assessed on-line by the patient. RESULTS One hundred and thirty-three patients filled out the questionnaire, 70 in the Out group and 63 in the In group; 42 females, 91 males; mean age, 30±9 years. Between D0 and D3, the proportion of patients with ≥l SPD was comparable between groups (Out 37% vs In 41%, P=0.62). Out-group patients had significantly less difficulty sleeping the first postoperative night (P=0.01), got up significantly more often during the first night after surgery (P<0.0001), more often walked regularly on day 1 (P=0.03), and were significantly less often woken by pain during the first night (P=0.003). Risk factors for SPD were female gender (OR=4.8±1.9) and postoperative complications (OR=3.8±2.5). CONCLUSION Patients undergoing ACL reconstruction on an outpatient basis did not show more symptoms of postoperative discomfort than those managed as conventional inpatients. LEVEL OF EVIDENCE IV; prospective comparative study.
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Affiliation(s)
- N Lefevre
- Clinique du sport Paris V, 36, boulevard Saint-Marcel, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France; Clinique Maussins-Nollet, 75019 Paris, France.
| | - S Klouche
- Clinique du sport Paris V, 36, boulevard Saint-Marcel, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France
| | - O de Pamphilis
- Clinique du sport Paris V, 36, boulevard Saint-Marcel, 75005 Paris, France
| | - C Devaux
- Clinique Maussins-Nollet, 75019 Paris, France
| | - S Herman
- Clinique du sport Paris V, 36, boulevard Saint-Marcel, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France; Clinique Maussins-Nollet, 75019 Paris, France
| | - Y Bohu
- Clinique du sport Paris V, 36, boulevard Saint-Marcel, 75005 Paris, France; Institut de l'appareil locomoteur Nollet, 75017 Paris, France; Clinique Maussins-Nollet, 75019 Paris, France
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Fischer A, Herman S, Böhm C, Saferding V, Goncalves-Alves E, Steiner G. A6.38 Toll-like receptor 7 and 9 in the pathogenesis of inflammatory autoimmune arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lefevre N, Bohu Y, de Pamphilis O, Klouche S, Devaux C, Herman S. Outpatient surgery feasibility in anterior cruciate ligament reconstruction: a prospective comparative assessment. Orthop Traumatol Surg Res 2014; 100:521-6. [PMID: 25082774 DOI: 10.1016/j.otsr.2014.03.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 02/19/2014] [Accepted: 03/06/2014] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The main objective of this study was to assess the feasibility of outpatient surgery in anterior cruciate ligament (ACL) reconstruction. We hypothesized that if the patient underwent the procedure within a dedicated organization, safety would be ensured. PATIENTS AND METHODS A non-randomized, prospective, comparative, single-operator study conducted in 2012-2013 included all patients undergoing first-line surgery for ACL arthroscopic reconstruction using a short hamstring graft. The outpatient group (OP) included patients who were eligible for outpatient surgery and provided consent; the conventional hospitalization group (CH) comprised those patients not suitable for outpatient surgery and those who refused it. The main evaluation criterion was failure of the admission modality defined as hospitalization of a patient who had undergone outpatient surgery or rehospitalization in the first week after discharge. The secondary evaluation criteria were the rate of postoperative complications, postoperative pain, use of analgesics, and patient satisfaction. A total of 138 patients were included: 71 in the OP group and 67 in the CH group, with a mean age of 29.6±9 years. Twenty-nine percent of the patients refused outpatient surgery. In the CH group, the mean hospital stay lasted 2.7±0.8 days. RESULTS One patient in the OP group was hospitalized with localized bleeding and there were no rehospitalizations. Six early postoperative complications were noted in each group. The mean postoperative pain on D0-D4 and patient satisfaction were similar in the two groups. CONCLUSION This prospective study encountered no serious events after outpatient ACL reconstruction surgery. In a selected population, the risks are comparable to those in conventional hospitalization. LEVEL OF EVIDENCE Level III, comparative study.
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Affiliation(s)
- N Lefevre
- Clinique du Sport Paris V, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique Maussins-Nollet, 75019 Paris, France.
| | - Y Bohu
- Clinique du Sport Paris V, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique Maussins-Nollet, 75019 Paris, France
| | | | - S Klouche
- Clinique du Sport Paris V, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France
| | - C Devaux
- Clinique Maussins-Nollet, 75019 Paris, France
| | - S Herman
- Clinique du Sport Paris V, 75005 Paris, France; Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique Maussins-Nollet, 75019 Paris, France
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Ratajczak P, Nowakowska E, Kus K, Danielewicz R, Herman S, Woźniak A. Neuroleptics and enrichment environment treatment in memory disorders and other central nervous system function observed in prenatally stressed rats. Hum Exp Toxicol 2014; 34:526-37. [PMID: 25062975 DOI: 10.1177/0960327114543934] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
It is believed that the most effective method of treatment in schizophrenia is pharmacotherapy, in particular, the use of atypical neuroleptics like aripiprazole (ARI) and olanzapine (OLA). Moreover, studies of many authors have shown that enriched living conditions and tobacco smoke exposure can also affect the cognitive functions that are disturbed in the course of schizophrenia. The aim of the study was to find whether tobacco smoke and enrichment living conditions have the influence on cognitive functions in the newborn offspring of prenatally stressed rats and whether drugs such as ARI (1.5 mg/kg intraperitoneally (i.p.)) and OLA (0.5 mg/kg ip) in single and chronic treatment modify those functions (Morris water maze). The study (in the same conditions) also analyses immobility time (Porsolt test) and motor activity of animals that received ARI and OLA. It has been shown that ARI and OLA as well as enriched environment reduce cognitive function disorders and modify cognitive functions in rats exposed to tobacco smoke. In turn, current research has shown that nicotine has increased cognitive function disorders compared to the previous study (animals without tobacco smoke exposure).
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Affiliation(s)
- P Ratajczak
- Department of Pharmacoeconomics and Social Pharmacy, Poznan University of Medical Sciences, Poznan, Poland
| | - E Nowakowska
- Department of Pharmacoeconomics and Social Pharmacy, Poznan University of Medical Sciences, Poznan, Poland
| | - K Kus
- Department of Pharmacoeconomics and Social Pharmacy, Poznan University of Medical Sciences, Poznan, Poland
| | - R Danielewicz
- Department of Pharmacoeconomics and Social Pharmacy, Poznan University of Medical Sciences, Poznan, Poland
| | - S Herman
- Department of Pharmacoeconomics and Social Pharmacy, Poznan University of Medical Sciences, Poznan, Poland
| | - A Woźniak
- Department of Toxicology, Poznan University of Medical Sciences, Poznan, Poland
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Lefevre N, Klouche S, Doumbouya N, Chambaz M, Devaux C, Thomas R, Herman S, Bohu Y. Hospitalisation en court séjour pour reconstruction du ligament croisé antérieur : étude prospective comparative. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.jts.2013.12.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lefevre N, Naouri JF, Bohu Y, Klouche S, Herman S. Sensitivity and specificity of bell-hammer tear as an indirect sign of partial anterior cruciate ligament rupture on magnetic resonance imaging. Knee Surg Sports Traumatol Arthrosc 2014; 22:1112-8. [PMID: 23604176 DOI: 10.1007/s00167-013-2511-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 04/15/2013] [Indexed: 11/24/2022]
Abstract
PURPOSE The main purpose of this study was to evaluate the usefulness of the bell-hammer sign in the diagnosis of partial tears of the anterior cruciate ligament (ACL) of the knee on MRI. METHODS A retrospective study was performed including all patients who underwent ACL reconstruction for partial or complete tears from 2008 to 2009. The diagnosis of partial or complete ACL tears was based on the appearance of the ligament bundles and the signal quality on MRI. On arthroscopy, which is considered the gold standard, each bundle was classified as normal, partially or completely torn depending on the extent of the rupture and the quality of the remaining fibres. The study included 312 patients, 83 women and 229 men (mean age 33.3 ± 19.6 years). A diagnosis of a tear was made in all patients on preoperative MRI. Arthroscopy did not show any normal ACL, 247/312 (79.2 %) complete tears and 65/312 (20.8%) partial tears, 50/65 (76.9%) on the anteromedial bundle (AM) and 15/65 (23.1%) the posterolateral bundle. RESULTS The bell-hammer sign was found on MRI in 13/312 patients (4.5%). It involved 9/65 (13.8%) partial tears, all in the AM bundle, and 4/247 (1.6%) complete tears, significantly more frequent in cases of partial rupture (p < 0.0001). MRI diagnosed a partial tear in 15/65 cases without the bell-hammer sign (sensitivity CI 95% = 23.1 ± 10%, specificity CI 95% = 95.9 ± 2.5%) and with the bell-hammer sign in 23/65 cases (sensitivity CI 95% = 35.4 ± 11%, specificity CI 95% = 93.9 ± 3%). The association of the bell-hammer sign with conventional radiological diagnostic criteria has improved diagnosis performance of MRI for partial tears but not significantly (ns). CONCLUSION The most important interest of the bell-hammer sign in the day-to-day clinical work is to suggest partial tears on MRI. It aids making a diagnosis, but its absence does not exclude partial ACL rupture. LEVEL OF EVIDENCE Diagnostic study, Level II.
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Affiliation(s)
- N Lefevre
- Orthopaedic Surgery Department, Clinique du Sport Paris V, 36 boulevard Saint Marcel, 75005, Paris, France,
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Jefferson A, Byant A, Devinsky O, Fusco H, Shafi M, Barr W, Friedman D, Press D, Herman S, O'Connor M, Schachter S, Pascual-Leone A, Liu A. Efficacy of tDCS for Treating Working Memory Dysfunction and Depression in Patients with Temporal Lobe Epilepsy. Brain Stimul 2014. [DOI: 10.1016/j.brs.2014.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Magorivska I, Jeremic I, Herman S, Munoz LE, Bilyy R, Herrmann M. 1.58 rheumatoid factor binding is influenced by the N-Glycans of their IGG targets. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2013-205124.57] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Bohu Y, Klouche S, Lefevre N, Herman S, Hardy P. Efficacité thérapeutique de l’autologous conditioned plasma (ACP™) : analyse de sa composition cellulaire et revue de la littérature. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.jts.2013.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Aurégan JC, Bohu Y, Lefevre N, Klouche S, Naouri JF, Herman S, Hardy P. Primary arthroscopic synovectomy for pigmented villo-nodular synovitis of the knee: recurrence rate and functional outcomes after a mean follow-up of seven years. Orthop Traumatol Surg Res 2013; 99:937-43. [PMID: 24161841 DOI: 10.1016/j.otsr.2013.08.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 07/22/2013] [Accepted: 08/21/2013] [Indexed: 02/02/2023]
Abstract
BACKGROUND Pigmented villo-nodular synovitis (PVNS) is an uncommon proliferative condition of the synovial membrane that chiefly affects the knee. Arthroscopic synovectomy may carry lower morbidity rates but higher recurrence rates than open synovectomy. Here, our objective was to evaluate recurrence rates and functional outcomes after primary arthroscopic synovectomy for PVNS of the knee. HYPOTHESIS Primary arthroscopic synovectomy preserves knee function while producing low recurrence and complication rates. MATERIALS AND METHODS We retrospectively included consecutive patients with histologically documented PVNS managed with primary arthroscopic synovectomy at two centres between 1998 and 2011. Twenty-three patients, 13 men and 10 women with a mean age of 41 ± 12 years, were reviewed including 16 patients with nodular and 7 with diffuse form of this disease. Patients with localized disease underwent partial synovectomy and those with diffuse disease complete synovectomy followed by chemical synovectomy of any residual lesions. The primary outcome measure was recurrence. Secondary outcome measures were the Tegner-Lysholm and Ogilvie-Harris scores. RESULTS Follow-up data were obtained after a mean of 7 ± 4 years in 21 patients (14 with nodular and 7 with diffuse disease), of whom 2 had recurrences, after 2 and 5 years, respectively. At last follow-up, neither patient had any evidence of recurrence. The mean Tegner-Lysholm score was significantly improved (from 68 ± 10 to 90 ± 8, P=0.0004) and the mean Ogilvie-Harris score indicated excellent function (11 ± 1). DISCUSSION Primary arthroscopic synovectomy ensures satisfactory control of PVNS while preserving knee function. A full recovery remains possible even in patients with diffuse disease. In the event of a recurrence, open synovectomy can be performed.
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Affiliation(s)
- J C Aurégan
- Hôpitaux Universitaires Paris Île-de-France Ouest, AP-HP, 92100 Boulogne-Billancourt, France.
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Lefevre N, Bohu Y, Klouche S, Lecocq J, Herman S. Anterior cruciate ligament tear during the menstrual cycle in female recreational skiers. Orthop Traumatol Surg Res 2013; 99:571-5. [PMID: 23764504 DOI: 10.1016/j.otsr.2013.02.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 01/16/2013] [Accepted: 02/07/2013] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Women run a 4-8-fold greater risk of anterior cruciate ligament (ACL) tear than men, and especially during the pre-ovulation stage of their cycle. The main study objective was to describe the distribution of ACL lesions according to menstrual cycle in a large population of female recreational skiers. MATERIALS AND METHODS A prospective study was conducted during the 2010-11 ski season on women sustaining ACL tear during skiing. Patients filled out a questionnaire during consultation with the mountain physician, including date of last menstrual period (LMP) and contraceptive method. Fifty-seven of the 229 patients with diagnosed ACL tear were excluded from analysis, 41 being post-menopausal (mean age, 47 ± 9 years), and 16 having irregular cycles or LMP>30 days. One hundred and seventy-two patients (mean age, 34 ± 8.7 years) were thus included. RESULTS Fifty-eight women (33.72%) were in follicular phase, 63 (36.63%) in ovulatory phase and 51 (29.65%) in luteal phase; difference with respect to the theoretic distribution regardless of menstrual phase was highly significant: χ(2)=48.32; P=0.00001. Fifty-three of the 172 women (30.8%) were taking oral contraceptives. ACL tear was 2.4-fold more frequent in pre-ovulatory than post-ovulatory phase, whether in women using oral or other contraceptives: 85/119 (71.4%) vs. 36/53 (67.9%); P=0.64. CONCLUSION ACL tear risk in skiing in women is not constant over the menstrual cycle, being 2.4-fold more frequent in pre-ovulatory (follicular and ovulatory) than post-ovulatory phase (luteal). Oral contraception seems not to exert any protective effect. LEVEL OF EVIDENCE Level IV. Retrospective cohort study.
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Affiliation(s)
- N Lefevre
- Paris V Sports Medicine Private Hospital, 75005 Paris, France.
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Herman S, Fischer A, Hoffmann M, Steiner G. FRI0024 Antagonizing endosomal toll-like receptors diminishes inflammatory arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Herman S, Fischer A, Böhm C, Dudziak D, VandenBerg W, Steiner G. THU0102 The Involvement of Toll-Like Receptor 9 in the Pathogenesis of Erosive Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Lefevre N, Bohu Y, Klouche S, Herman S. Surgical technique for repair of acute proximal hamstring tears. Orthop Traumatol Surg Res 2013; 99:235-40. [PMID: 22926295 DOI: 10.1016/j.otsr.2012.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Revised: 05/11/2012] [Accepted: 05/14/2012] [Indexed: 02/02/2023]
Abstract
The surgical technique for repair of acute proximal hamstring tears is relatively recent. Installation of the patient is critical. The approach is either vertical under the gluteal fold in case of a complete tear with tendon retraction of more than 6 cm, or horizontal in the gluteal fold for retraction of less than 6 cm or for partial tears. After identification and neurolysis of the sciatic nerve, transosseous tendon reinsertion is performed with three or four metal or resorbable suture anchors. A rigid brace keeping the leg at 30° of flexion is worn for few days, then replaced by an articulated knee brace for 45 days, which limits extension but allows full flexion. Rehabilitation is begun early. Thirty-four patients underwent surgery for acute proximal hamstring tear and received this treatment. All of the athletic patients were able to return to their pre-injury activities after a mean 5.7 ± 1.6 months (2.3-9.3 months).
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Affiliation(s)
- N Lefevre
- Clinique du sport Paris V, 36, boulevard Saint-Marcel, 75005 Paris, France; Institut Nollet, 23, rue Brochant, 75017 Paris, France.
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Lefevre N, Bohu Y, Naouri JF, Klouche S, Herman S. Returning to sports after surgical repair of acute proximal hamstring ruptures. Knee Surg Sports Traumatol Arthrosc 2013; 21:534-9. [PMID: 22972314 DOI: 10.1007/s00167-012-2204-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Accepted: 09/03/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE Although the treatment of choice for acute proximal hamstring ruptures is now surgical repair, this technique is relatively new and requires further evaluation. Our hypothesis was that patients return to sports at the same level after surgical repair as before injury. METHODS From 2002 to 2011, a prospective observational study including 34 patients, mean age 39.3 ± 11.4 years old underwent surgical repair of an acute proximal hamstring rupture. Surgical, rehabilitation and follow-up protocols were standardized. Mean follow-up was 27.2 ± 22.9 months and there were no lost to follow-up. The primary outcome was the level of activity on the UCLA and Tegner scores. RESULTS The mean UCLA score was 9.1 ± 1.3 before injury and 8.7 ± 1.7 at the final follow-up (p = 0.03). The median Tegner activity level was 6 (range, 4-10) before injury and 6 (range, 3-10) at the final follow-up (p = 0.05). The two scores were correlated (r = 0.76, p = 0.00001). Patients returned to sports within a mean 5.7 ± 1.6 months, at the same level in 27 patients (79.4 %) and at a lower level in 7 patients (20.6 %). The average hamstring/quadriceps ratio at 240°/second was 54.7 ± 8.6 % which was positively correlated to the level of activity on the UCLA score (r = 0.49, n.s.). The level of satisfaction was related to their level of activity at the final follow-up (p = 0.03). CONCLUSION Although surgical repair of acute proximal hamstring ruptures has significantly improved the functional prognosis of patients it remains a serious condition that can compromise future sports activities. LEVEL OF EVIDENCE Case-control study, Level III.
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Affiliation(s)
- N Lefevre
- Orthopaedic Surgery Department, Clinique du Sport Paris V, 36 Boulevard Saint Marcel, 75005, Paris, France.
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Lefevre N, Naouri JF, Bohu Y, Klouche S, Herman S. Partial tears of the anterior cruciate ligament: diagnostic performance of isotropic three-dimensional fast spin echo (3D-FSE-Cube) MRI. Eur J Orthop Surg Traumatol 2012; 24:85-91. [PMID: 23412260 DOI: 10.1007/s00590-012-1135-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Accepted: 11/06/2012] [Indexed: 12/29/2022]
Abstract
PURPOSE To compare the performance of 3D-FSE-Cube MRI to arthroscopy, the reference test for the diagnosis of partial anterior cruciate ligament (ACL) tears. METHODS A retrospective study was performed including all patients who underwent surgery for an ACL tear in our Sports Surgery Unit from January 2008 to December 2009. All patients underwent a preoperative MRI, conventional 2D or 3D-Cube. The diagnosis of a partial tear was based on the appearance of the ligament bundles and signal quality on MRI, and on the continuity of the fibers on arthroscopy and the quality of the remaining ligament. Sixty-four of the 312 included patients underwent MRI 3D-Cube and 248 conventional 2D-MRI. The series included 82 women and 223 men, mean age 33.3 ± 19.6 years. Arthroscopy did not reveal any normal ACL, 247/312 (79.2 %) complete tears, and 65/312 (20.8 %) partial tears, with 50/65 (76.9 %) involving the anteromedial bundle and 15/65 (23.1 %) the posterolateral. RESULTS The results of MRI 3D-Cube were as follows: sensitivity 95 % CI = 62.5 ± 23.7 %, specificity 95 % CI = 93.7 ± 6.9 %, likelihood ratio LR(+) = 9.9, LR(-) = 0.4 and accuracy 85.9 %. Results of conventional 2D-MRI were as follows: sensitivity 95 % CI = 10.2 ± 8.5 %, specificity 95 % CI = 96.5 ± 2.5 %, LR(+) = 2.9, LR(-) = 0.9 and accuracy 79.4 %. The diagnostic performance of MRI 3D-Cube was better than conventional 2D-MRI. CONCLUSION The diagnostic performance of MRI 3D-Cube in partial ACL tears was good and significantly better than conventional 2D-MRI. The likelihood of having a positive test was 9.9 times higher in a patient with a partial tear. A negative result did not exclude this diagnosis.
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Affiliation(s)
- N Lefevre
- Orthopaedic Surgery Department, Clinique Du Sport Paris V, 36 Boulevard Saint Marcel, 75005, Paris, France,
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Bowman CA, Bell G, Ellam H, Tunbridge A, Slack S, Atkin A, Evans C, Shutt A, Joseph E, Naylor S, Herman S, Green S, Kudesia G, Pryce A. P6 Cultural differences in the acceptability of home sampling for HIV infection. Br J Vener Dis 2012. [DOI: 10.1136/sextrans-2012-050601c.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Raju S, Sanford P, Herman S, Olivier J. Postural and ambulatory changes in regional flow and skin perfusion. Eur J Vasc Endovasc Surg 2012; 43:567-72. [PMID: 22326875 DOI: 10.1016/j.ejvs.2012.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 01/19/2012] [Indexed: 11/25/2022]
Abstract
BACKGROUND Studies of orthostatic changes in cutaneous micro-perfusion have yielded conflicting results, likely from imprecision of legacy equipment. METHODS Postural flow changes in the femoral vessels and cervical carotids were measured in healthy normal adults using duplex equipment. Nutrient skin flow was measured using Hyperspectral imager (OxyVu-2™), a newer non-touch measurement technology. RESULTS There are regional variations in cutaneous capillary density, sparse in the abdomen but richer in the forehead and ankle. Orthostatic microvascular congestion displays regional variations reflective of the non-linear pressure-volume relationship in thin walled vessels. There is profound cutaneous deoxygenation (≈40% reduction) in the lower body starting at the level of the umbilicus and involving all levels below, in the erect posture; upper body is unaffected. Quantitative regional flow is preserved however, with an increase in pulse rate despite a velocity decrease in the femoral vessels. Increasing the arterio-venous gradient by calf-emptying maneuvers resulted in little improvement in cutaneous oxygenation unable to overcome the powerful orthostatic vasoconstriction. CONCLUSION There is intense orthostatic vasoconstriction and cutaneous deoxygenation of the lower limbs to a degree not previously suspected. This powerful mechanism may be relevant to an understanding of dysvascular syndromes, particularly those with strong orthostatic features.
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Affiliation(s)
- S Raju
- The Rane Center, 1020 River Oaks Dr. #420, Flowood, MS 39232, USA.
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Herman S, Pfatschbacher J, Fischer A, Hoffmann M, Steiner G. Increased apoptosis in lymphoid cells may be the initial trigger in the pathogenesis of pristane-induced arthritis. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.148999.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Herman S, Presumey J, Pfatschbacher J, Apparailley F, Steiner G. RNAi mediated silencing of hnRNP-A2 decreases collagen-induced arthritis by inhibiting proliferation and cytokine production of cells of the mononuclear phagocytic system. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.148973.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Herman S, Fischer A, Pfatschbacher J, Hoffmann M, Steiner G. A TLR 9 antagonist diminishes arthritis severity in a rat model of rheumatoid arthritis. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.148973.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Herman S, Hoffmann M, Kny A, Smolen J, Steiner G. Apoptosis and the subsequent generation of autoantigens as initial triggers in the pathogenesis of experimental autoimmune arthritis. Ann Rheum Dis 2010. [DOI: 10.1136/ard.2010.129650b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Bohu Y, Lefèvre N, Bauer T, Laffenetre O, Herman S, Thaunat M, Cucurulo T, Franceschi JP, Cermolacce C, Rolland E. Surgical treatment of Achilles tendinopathies in athletes. Multicenter retrospective series of open surgery and endoscopic techniques. Orthop Traumatol Surg Res 2009; 95:S72-7. [PMID: 19892618 DOI: 10.1016/j.otsr.2009.09.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Y Bohu
- Service de chirurgie orthopédique et traumatologique du sport, groupe hospitalier Pitié-Salpêtrière, 47-83, boulevard de l'Hôpital, 75013 Paris, France.
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Abstract
The notes of all HIV patients in Sheffield, registered at the Department of Genitourinary Medicine at the Royal Hallamshire Hospital, who had initiated HAART in 2005 and 2006, were audited. The aim was to determine what percentage of these patients acquired an undetectable viral load within 24 weeks and whether this was greater than 75% in accordance with the BHIVA guidelines. Twenty-nine (78.4%) of the 37 patients who were initiating treatment for the first time had an undetectable viral load after 24 weeks.
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Affiliation(s)
- S Currie
- Sheffield Medical School, Sheffield S10 2JF, UK
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Herman S, Zurgil N, Langevitz P, Ehrenfeld M, Deutsch M. Methotrexate selectively modulates TH1/TH2 balance in active rheumatoid arthritis patients. Clin Exp Rheumatol 2008; 26:317-323. [PMID: 18565255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE The mechanism by which low dose methotrexate (MTX, the gold standard treatment for rheumatoid arthritis) exerts its anti-inflammatory effect in rheumatoid arthritis (RA) patients is still debated. Lately, the MTX immunosuppressive effect has been related to apoptosis, especially in active RA patients, with ROS involvement. METHODS In the present research we investigated MTX oxidative effect and its ability to modulate immune balance in active versus non-active RA patients. RESULTS Our results show that MTX induces IL-10 secretion (a TH2 cytokine) and significantly reduces TH1 profile in Peripheral Mononuclear Cells (PMNC) derived from active RA patients (n=28). Additionally, we found that MTX modulates the immune status towards TH2 dominance by decreasing the IL-12R and the CXCR3 receptors typical for the TH1 population. Moreover, MTX was found to inhibit the production of nitric oxide (NO) in these patients, a phenomenon that might contribute to MTX action toward cytokine homeostasis. A significant correlation was found between MTX IL-10 induction and NO inhibition in active RA patients. CONCLUSION Our data suggest that, in active RA patients, apoptosis induction by MTX may be primarily due to IL-10 production via modulation of oxidative stress, which may restore the critically important immune balance. These findings may contribute to determining which group of RA patients may better respond to MTX therapy.
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Affiliation(s)
- S Herman
- The Biophysical Interdisciplinary Schottenstein Center for the Research and the Technology of the Cellome, Bar-Ilan University, Israel
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Axmann R, Herman S, Zaiss M, Franz S, Polzer K, Zwerina J, Herrmann M, Smolen J, Schett G. CTLA-4 directly inhibits osteoclast formation. Ann Rheum Dis 2008; 67:1603-9. [DOI: 10.1136/ard.2007.080713] [Citation(s) in RCA: 145] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Artha GA, Moestikaningsih M, Herman S, Winarti W. Primitive Neuro Ectodermal Tumor (PNET) in infant diagnosed by histopathology and immunohistochemistry techniques. Med J Indones 2007. [DOI: 10.13181/mji.v16i2.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Patsios D, Roberts H, Paul N, Chung T, Herman S, Weisbrod G. P-380 CT-guided percutaneous fine needle aspiration biopsy ofsubcentimeter intrapulmonary nodules. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)80873-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Herman S, Zurgil N, Deutsch M. Low dose methotrexate induces apoptosis with reactive oxygen species involvement in T lymphocytic cell lines to a greater extent than in monocytic lines. Inflamm Res 2005; 54:273-80. [PMID: 16134056 DOI: 10.1007/s00011-005-1355-8] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND The mechanism by which low dose methotrexate (MTX) exerts its anti-inflammatory and immunosuppressive effect in rheumatoid arthritis (RA) patients is still debated. Recently it has been related to the induction of apoptosis. OBJECTIVE We investigated the degree of apoptotic induction by MTX in lymphocytic (Jurkat T, EL4 T, and Raji B) and monocytic cell lines (U937 and THP1) and its relation to reactive oxygen species (ROS) generation, as a possible mechanism underlying the apoptotic events. METHODS All cell types were incubated with a range of MTX concentrations (0.001, 0.01, 0.1, 1, and 10 muM) for up to 24 h. Cytotoxicity was assessed by Trypan Blue exclusion and MTT test; cell size and granularity by forward and side scatters (FSC, SSC). Apoptosis was measured by Annexin V test and FDA polarization; and mitochondrial ROS generation by DHR123 probe and by NAC inhibition. RESULTS MTX significantly reduced cell viability and proliferation in all cell lines, being most effective in the Jurkat T lymphocytic line. The MTX cytotoxicity (at the optimal concentrations corresponding to low dose MTX therapy) was attributed to apoptosis, as suggested by morphological changes (shrinkage, increased granularity) and confirmed by Annexin V binding and FDA hyperpolarization. The apoptotic induction and the ROS generation (statistically correlated to apoptosis) were most pronounced in the Jurkat and EL4 T cell lines, and were partially inhibited by the antioxidant N-acetyl L-cysteine (NAC). CONCLUSION According to the present observations, MTX may most likely induce apoptosis through oxidative stress. The high susceptibility of T cell lines to MTX induced apoptosis may account for the beneficial effect of MTX treatment in rheumatoid arthritis, which is characterized by hyperproliferation of T cells.
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Affiliation(s)
- S Herman
- The Biophysical Interdisciplinary Jerome Schottenstein Center for the Research and the Technology of the Cellome, Physics Department, Bar-Ilan University, Ramat-Gan 52900, Israel
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Westhoff C, Schafer J, Morroni C, Herman S, Osborne L. Ovulation in the first cycle of immediate start of the monthly vaginal ring for birth control and a triphasic oral contraceptive. Fertil Steril 2004. [DOI: 10.1016/j.fertnstert.2004.07.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Dolinar D, Antolic V, Herman S, Iglic A, Kralj-Iglic V, Pavlovcic V. Influence of contact hip stress on the outcome of surgical treatment of hips affected by avascular necrosis. Arch Orthop Trauma Surg 2003; 123:509-13. [PMID: 12827393 DOI: 10.1007/s00402-003-0541-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2002] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Biomechanical analysis is an important tool that could improve the treatment of a diseased hip. However, it is still unclear how the biomechanical status affects the clinical outcome of a certain disease. In this work we studied the long-term effect of contact hip stress on the clinical outcome of hips that were operated on by various intertrochanteric osteotomies due to avascular necrosis of the femoral head. The hypothesis being tested is that the hips with a more favourable postoperative distribution of contact hip stress have a better clinical outcome. MATERIALS AND METHODS The study was performed on a population of 30 hips. For each hip, we determined the peak contact hip stress before the operation and immediately after the operation by using a recently developed method based on a three-dimensional mathematical model and the data from standard anteroposterior roentgenographs of both hips and pelvis. The hips were evaluated clinically 9-26 years after the operation and divided into a successful and an unsuccessful group. The average change of the peak stress due to the operation was calculated for each group, and the values were compared by t-test. RESULTS In the successful group the operation caused an average decrease of the peak hip stress of about 10%, while in the unsuccessful group the operation caused an average increase of the peak hip stress of about 4%, the difference between the respective changes of the peak stress due to the operation being statistically significant ( p=0.001). CONCLUSION Our results support the hypothesis that the hips with a more favourable postoperative distribution of contact hip stress have a better clinical outcome.
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Affiliation(s)
- D Dolinar
- Department of Orthopaedic Surgery, Clinical Centre, Zaloska 9, 1000, Ljubljana, Slovenia,
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Abrams SA, Griffin IJ, Herman S. Using stable isotopes to assess the bioavailability of minerals in food fortification programs. Food Nutr Bull 2002; 23:158-65. [PMID: 12362786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
The fortification of various types of food with minerals is often undertaken without consideration of either their bioavailability or the potential nutrient-nutrient interactions resulting from their use. Stable isotopes provide a safe and accessible method of resolving these issues by providing the proper evidence in each case. They must be conducted according to strict safety and ethical guidelines and may be readily conducted in a field setting. Clinical studies in children enable researchers, policymakers, and food manufacturers to obtain the data necessary to determine the best way to fortify specific foods and beverages, in order to optimally enhance the nutritional health of growing children. We have shown the utility of this approach in studies in both developing countries and in the United States.
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Affiliation(s)
- S A Abrams
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
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Abstract
A mathematical model was developed to study the effect of the Chiari osteotomy on the distribution of contact hip stress over the weight-bearing area. It was shown that Chiari osteotomy can increase the weight-bearing area directly (on the lateral side), owing to the additional area formed by the ala ossis ilii segment, and indirectly (on the medial side), owing to the shift of the stress pole in the medial direction. As a consequence, the contact hip stress is reduced after Chiari osteotomy. The indirect effect is important and often larger than the direct one. Using the proposed mathematical model and standard anteroposterior roentgenographs from archives, the average peak stress on the weight-bearing area, normalised with respect to the body weight (pmax/ W(B)), was determined before and after Chiari osteotomy (8,310m(-2) and 4,480 m(-2), respectively) on a population of 29 dysplastic hips. The difference was statistically significant (p < 0.005). Based on the results presented, it can be concluded that the hip joint contact stress in dysplastic hips considerably decreases after Chiari osteotomy, indicating a favourable biomechanical effect of this operation.
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Affiliation(s)
- S Herman
- Clinical Department of Traumatology, University Medical Center, Ljubljana, Slovenia
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Schara K, Herman S. Heterotopic bone formation in total hip arthroplasty: predisposing factors, classification and the significance for clinical outcome. Acta Chir Orthop Traumatol Cech 2002; 68:105-8. [PMID: 11706718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
PURPOSE OF THE STUDY Heterotopic bone formation in the area around the femoral head is a recognised complication following total hip arthroplasty. The aim of the study was to determine the prevalence of heterotopic ossification and to select a method of classification. Also, we studied the potential association of heterotopic bone with the following variables: sex, age at operation, operative technique, type of prosthesis and previous surgery on the ipsilateral hip. MATERIAL The study involved 103 consecutive patients who underwent total hip replacement at our department in 1995. 175 patients were excluded from the study. Among 103 patients there were 35 male and 68 female patients. METHOD Antero-posterior radiographs of the hips were reviewed preoperatively, six weeks after the operation and at one year after surgery. The degree of heterotopic bone formation was determined using the classifications of Brooker et al. (Grades 0-IV) and Kjaersgaard-Andersen et al. (Grades I and II). RESULTS Heterotopic bone has developed in 27 (26.2%) patients, in 37% of male patients, mean age 59.8 years, and in only 20.5% female patients mean age 68.3 years. Brooker et al. Grade I ossification developed in 37% of the patients, Grade II in 44.4% and Grade III in 18.6%. According to the Kjaersgaard-Andersen et al. classification 22 patients developed Grade I and 5 patients Grade II ossification. The leading indication for surgery was osteoarthrosis, followed by aseptic necrosis (7.4%). Heterotopic bone formation was found in 20% of all patients with aseptic necrosis of the femoral head. Only 2.7% of patients operated on the ipsilateral hip developed ossifications. DISCUSSION The study has shown that the incidence of ossifications is relatively low, yet still within the range of percentages reported in the literature. The finding that heterotopic bone most frequently develops in men and women older than 65 years both with osteoarthrosis is consistent with some authors. We found no association between the incidence of heterotopic ossification and the operative approach used or the type of prosthesis implanted, which has been confirmed by other investigators. Authors confirm that clinical parameters were significantly affected only in the most severe cases of ossification. CONCLUSION The study has identified male patients and female patients older than 65 years both with osteoarthrosis as risk factors for the formation of heterotopic bone. The prevalence did not depend on the operative approach or type of prosthesis used. Heterotopic ossification was not associated with previous operative treatment of the hip. Both classification systems used in this study have proved reliable.
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Affiliation(s)
- K Schara
- University Medical Center Ljubljana, Department of Orthopaedic Surgery, Ljubljana, Slovenia
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Goormachtig S, Van de Velde W, Lievens S, Verplancke C, Herman S, De Keyser A, Holsters M. Srchi24, a chitinase homolog lacking an essential glutamic acid residue for hydrolytic activity, is induced during nodule development on Sesbania rostrata. Plant Physiol 2001; 127:78-89. [PMID: 11553736 PMCID: PMC117964 DOI: 10.1104/pp.127.1.78] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2001] [Revised: 04/02/2001] [Accepted: 06/04/2001] [Indexed: 05/23/2023]
Abstract
The interaction between the tropical legume Sesbania rostrata and the bacterium Azorhizobium caulinodans results in the formation of nodules on both stem and roots. Stem nodulation was used as a model system to isolate early markers by differential display. One of them, Srchi24 is a novel early nodulin whose transcript level increased already 4 h after inoculation. This enhancement depended on Nod factor-producing bacteria. Srchi24 transcript levels were induced also by exogenous cytokinins. In situ hybridization and immunolocalization experiments showed that Srchi24 transcripts and proteins were present in the outermost cortical cell layers of the developing nodules. Sequence analyses revealed that Srchi24 is similar to class III chitinases, but lacks an important catalytic glutamate residue. A fusion between a maltose-binding protein and Srchi24 had no detectable hydrolytic activity. A function in nodulation is proposed for the Srchi24 protein.
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Affiliation(s)
- S Goormachtig
- Vakgroep Moleculaire Genetica, Departement Plantengenetica, Vlaams Interuniversitair Instituut voor Biotechnologie, Universiteit Gent, Karel Lodewijk Ledeganckstraat 35, B-9000 Gent, Belgium
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Blumenthal JA, Herman S, O'Toole LC, Haney TL, Williams RB, Barefoot JC. Development of a brief self-report measure of the type A (coronary prone) behavior pattern. J Psychosom Res 2001; 29:265-74. [PMID: 4032325 DOI: 10.1016/0022-3999(85)90053-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This study reports the development of a brief self-report measure of the Type A behavior pattern based upon a set of adjectives derived from the Gough Adjective Checklist (ACL). Previous work from our laboratory established a set of adjectives identified by experts as being relevant to the Type A construct that subsequently was found to successfully distinguish Type A individuals from their Type B counterparts. In the present study, a Type A self-rating scale based on these adjectives was found to be significantly related to an established Type A self-report instrument, the Jenkins Activity Survey (JAS), and to an independent behavioral rating based upon a standard structured interview (SI). However, no measure of Type A was related to the severity of coronary artery disease (CAD) as documented by coronary angiography. The advantages and disadvantages of the various Type A measures are discussed in the context of their ability to identify individuals at risk for the development of CAD.
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Blumenthal JA, Hart A, Sherwood A, Doraiswamy M, Herman S, Watkins L, Hinderliter A, Gullette E, Krishnan KR. Depression and vascular function in older adults. Evaluating the benefits of exercise in a new study at Duke University. N C Med J 2001; 62:95-8. [PMID: 11270312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- J A Blumenthal
- Department of Psychiatry and Behavioral Science, Duke University Medical Center, Durham, NC 27710, USA.
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