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Gillet B, Blache Y, Rogowski I, Vigne G, Capel O, Sonnery-Cottet B, Fayard JM, Thaunat M. Isokinetic Strength After ACL Reconstruction: Influence of Concomitant Anterolateral Ligament Reconstruction. Sports Health 2021; 14:176-182. [PMID: 33794712 DOI: 10.1177/19417381211005405] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND To reduce the rate of anterior cruciate ligament (ACL) graft rupture, recent surgeries have involved anterolateral ligament reconstruction (ALLR). This reconstruction procedure harvests more knee flexor muscle tendons than isolated ACL reconstruction (ACLR), but its influence on knee muscle strength recovery remains unknown. This study aimed to assess the influence of ALLR with a gracilis graft on the strength of the knee extensor and flexor muscles at 6 months postoperatively. HYPOTHESIS The additional amount of knee flexor harvest for ALLR would result in impairment in knee flexor muscle strength at 6 months postoperatively. STUDY DESIGN Retrospective cohort study. LEVEL OF EVIDENCE Level 2. METHODS A total of 186 patients were assigned to 2 groups according to the type of surgery: ACL + ALLR (graft: semitendinosus + gracilis, n = 119) or isolated ACLR (graft: semitendinosus, n = 67). The strength of the knee extensor and flexor muscles was assessed using an isokinetic dynamometer at 90, 180, and 240 deg/s for concentric and 30 deg/s for eccentric contractions and compared between groups using analysis of variance statistical parametric mapping. RESULTS Regardless of the surgery and the muscle, the injured leg produced significantly less strength than the uninjured leg throughout knee flexion and extension from 30° to 90° for each angular velocity (30, 90, 180, and 240 deg/s). However, the knee muscle strength was similar between the ACL + ALLR and ACLR groups. CONCLUSION The addition of ALLR using the gracilis tendon during ACLR does not alter the muscle recovery observed at 6 months postoperatively. CLINICAL RELEVANCE Although more knee flexor muscle tendons were harvested in ACL + ALLR, the postoperative strength recovery was similar to that of isolated ACLR.
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Danielou M, Sarter H, Pariente B, Fumery M, Ley D, Mamona C, Barthoulot M, Charpentier C, Siproudhis L, Savoye G, Gower-Rousseau C, Andre JM, Antonietti M, Aouakli A, Armand A, Aroichane I, Assi F, Aubet JP, Auxenfants E, Ayafi-Ramelot F, Azzouzi K, Bankovski D, Barbry B, Bardoux N, Baron P, Baudet A, Bazin B, Bebahani A, Becqwort JP, Benet V, Benali H, Benguigui C, Ben Soussan E, Bental A, Berkelmans I, Bernet J, Bernou K, Bernou-Dron C, Bertot P, Bertiaux-Vandaële N, Bertrand V, Billoud E, Biron N, Bismuth B, Bleuet M, Blondel F, Blondin V, Bohon P, Boniface E, Bonnière P, Bonvarlet E, Bonvarlet P, Boruchowicz A, Bostvironnois R, Boualit M, Bouche B, Boudaillez C, Bourgeaux C, Bourgeois M, Bourguet A, Bourienne A, Branche J, Bray G, Brazier F, Breban P, Bridenne M, Brihier H, Brung-Lefebvre V, Bulois P, Burgiere P, Butel J, Canva JY, Canva-Delcambre V, Capron JP, Cardot F, Carpentier P, Cartier E, Cassar JF, Cassagnou M, Castex JF, Catala P, Cattan S, Catteau S, Caujolle B, Cayron G, Chandelier C, Chantre M, Charles J, Charneau T, Chavance-Thelu M, Chirita D, Choteau A, Claerbout JF, Clergue PY, Coevoet H, Cohen G, Collet R, Colombel JF, Coopman S, Corvisart J, Cortot A, Couttenier F, Crinquette JF, Crombe V, Dadamessi I, Dapvril V, Davion T, Dautreme S, Debas J, Degrave N, Dehont F, Delatre C, Delcenserie R, Delette O, Delgrange T, Delhoustal L, Delmotte JS, Demmane S, Deregnaucourt G, Descombes P, Desechalliers JP, Desmet P, Desreumaux P, Desseaux G, Desurmont P, Devienne A, Devouge E, Devred M, Devroux A, Dewailly A, Dharancy S, Di Fiore A, Djeddi D, Djedir R, Dreher-Duwat ML, Dubois R, Dubuque C, Ducatillon P, Duclay J, Ducrocq B, Ducrot F, Ducrotte P, Dufilho A, Duhamel C, Dujardin D, Dumant-Forest C, Dupas JL, Dupont F, Duranton Y, Duriez A, El Achkar K, El Farisi M, Elie C, Elie-Legrand MC, Elkhaki A, Eoche M, Evrard D, Evrard JP, Fatome A, Filoche B, Finet L, Flahaut M, Flamme C, Foissey D, Fournier P, Foutrein-Comes MC, Foutrein P, Fremond D, Frere T, Fumery M, Gallet P, Gamblin C, Ganga S, Gerard R, Geslin G, Gheyssens Y, Ghossini N, Ghrib S, Gilbert T, Gillet B, Godard D, Godard P, Godchaux JM, Godchaux R, Goegebeur G, Goria O, Gottrand F, Gower P, Grandmaison B, Groux M, Guedon C, Guillard JF, Guillem L, Guillemot F, Guimberd D, Haddouche B, Hakim S, Hanon D, Hautefeuille V, Heckestweiller P, Hecquet G, Hedde JP, Hellal H, Henneresse PE, Heyman B, Heraud M, Herve S, Hochain P, Houssin-Bailly L, Houcke P, Huguenin B, Iobagiu S, Ivanovic A, Iwanicki-Caron I, Janicki E, Jarry M, Jeu J, Joly JP, Jonas C, Katherin F, Kerleveo A, Khachfe A, Kiriakos A, Kiriakos J, Klein O, Kohut M, Kornhauser R, Koutsomanis D, Laberenne JE, Laffineur G, Lagarde M, Lalanne A, Lannoy P, Lapchin J, Laprand M, Laude D, Leblanc R, Lecieux P, Leclerc N, Le Couteulx C, Ledent J, Lefebvre J, Lefiliatre P, Legrand C, Le Grix A, Lelong P, Leluyer B, Lenaerts C, Lepileur L, Leplat A, Lepoutre-Dujardin E, Leroi H, Leroy MY, Lesage JP, Lesage X, Lesage J, Lescanne-Darchis I, Lescut J, Lescut D, Leurent B, Levy P, Lhermie M, Lion A, Lisambert B, Loire F, Louf S, Louvet A, Luciani M, Lucidarme D, Lugand J, Macaigne O, Maetz D, Maillard D, Mancheron H, Manolache O, Marks-Brunel AB, Marti R, Martin F, Martin G, Marzloff E, Mathurin P, Mauillon J, Maunoury V, Maupas JL, Mesnard B, Metayer P, Methari L, Meurisse B, Meurisse F, Michaud L, Mirmaran X, Modaine P, Monthe A, Morel L, Mortier PE, Moulin E, Mouterde O, Mudry J, Nachury M, N’Guyen Khac E, Notteghem B, Ollevier V, Ostyn A, Ouraghi A, Ouvry D, Paillot B, Panien-Claudot N, Paoletti C, Papazian A, Parent B, Pariente B, Paris JC, Patrier P, Paupart L, Pauwels B, Pauwels M, Petit R, Piat M, Piotte S, Plane C, Plouvier B, Pollet E, Pommelet P, Pop D, Pordes C, Pouchain G, Prades P, Prevost A, Prevost JC, Quesnel B, Queuniet AM, Quinton JF, Rabache A, Rabelle P, Raclot G, Ratajczyk S, Rault D, Razemon V, Reix N, Revillon M, Richez C, Robinson P, Rodriguez J, Roger J, Roux JM, Rudelli A, Saber A, Savoye G, Schlosseberg P, Segrestin M, Seguy D, Serin M, Seryer A, Sevenet F, Shekh N, Silvie J, Simon V, Spyckerelle C, Talbodec N, Techy A, Thelu JL, Thevenin A, Thiebault H, Thomas J, Thorel JM, Tielman G, Tode M, Toisin J, Tonnel J, Touchais JY, Touze Y, Tranvouez JL, Triplet C, Turck D, Uhlen S, Vaillant E, Valmage C, Vanco D, Vandamme H, Vanderbecq E, Vander Eecken E, Vandermolen P, Vandevenne P, Vandeville L, Vandewalle A, Vandewalle C, Vaneslander P, Vanhoove JP, Vanrenterghem A, Varlet P, Vasies I, Verbiese G, Vernier-Massouille G, Vermelle P, Verne C, Vezilier-Cocq P, Vigneron B, Vincendet M, Viot J, Voiment YM, Wacrenier A, Waeghemaecker L, Wallez JY, Wantiez M, Wartel F, Weber J, Willocquet JL, Wizla N, Wolschies E, Zalar A, Zaouri B, Zellweger A, Ziade C. Natural History of Perianal Fistulising Lesions in Patients With Elderly-onset Crohn's Disease: A Population-based Study. J Crohns Colitis 2020; 14:501-507. [PMID: 31637413 DOI: 10.1093/ecco-jcc/jjz173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Most studies of elderly-onset Crohn's disease [CD; diagnosed in patients aged 60 or over] have described a mild course. However, data on the natural history of perianal fistulising CD [pfCD] in this population are scarce. In a population-based cohort study, we described the prevalence, natural history, and treatment of pfCD in patients with elderly-onset CD vs patients with paediatric-onset CD. METHOD All patients diagnosed with CD at or after the age of 60 between 1988 and 2006, were included [n = 372]. Logistic regression, Cox models, and a nested case-control method were used to identify factors associated with pfCD. RESULTS A total of 34 elderly patients [9% of the 372] had pfCD at diagnosis. After a median follow-up of 6 years (interquartile range [IQR]: 3; 10), 59 patients [16%] had pfCD; the same prevalence [16%] was observed in paediatric-onset patients. At last follow-up, anal incontinence was more frequent in elderly patients with pfCD than in elderly patients without pfCD [22% vs 4%, respectively; p < 10-4]. Rectal CD at diagnosis was associated with pfCD: hazard ratio (95% confidence interval [CI] = 2.8 [1.6-5.0]). Although 37% of the patients received immunosuppressants and 17% received anti-tumour necrosis factor agents, 24% [14 out of 59] had a definitive stoma at last follow-up. CONCLUSION During the first 6 years of disease, the prevalence of pfCD was similar in elderly and paediatric patients. Rectal involvement was associated with the appearance of pfCD in elderly-onset patients. Around a quarter of patients with elderly-onset CD will have a stoma. Our results suggest that treatment with biologics should be evaluated in these patients.
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Affiliation(s)
- Marie Danielou
- Gastroenterology Unit, EPIMAD Registry, University of Rouen and Rouen University Hospital, Rouen, France
| | - Hélène Sarter
- Public Health, Epidemiology and Economic Health Unit, EPIMAD Registry, Maison Régionale de la Recherche Clinique, University of Lille and Lille University Hospital, Lille, France.,LIRIC UMR 995, Team 5, INSERM and University of Lille, Lille, France
| | - Benjamin Pariente
- Gastroenterology Unit, EPIMAD Registry, Hôpital Huriez, Lille University Hospital, Lille, France
| | - Mathurin Fumery
- Gastroenterology Unit, EPIMAD Registry, and PeriTox, UMR I-01, University of Amiens and Amiens University Hospital, Amiens, France
| | - Delphine Ley
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Jeanne de Flandre Children's Hospital and University of Lille, Lille, France
| | - Christel Mamona
- Public Health, Epidemiology and Economic Health Unit, EPIMAD Registry, Maison Régionale de la Recherche Clinique, University of Lille and Lille University Hospital, Lille, France
| | - Maël Barthoulot
- Public Health, Epidemiology and Economic Health Unit, EPIMAD Registry, Maison Régionale de la Recherche Clinique, University of Lille and Lille University Hospital, Lille, France
| | - Cloé Charpentier
- Gastroenterology Unit, EPIMAD Registry, University of Rouen and Rouen University Hospital, Rouen, France
| | | | - Guillaume Savoye
- Gastroenterology Unit, EPIMAD Registry, University of Rouen and Rouen University Hospital, Rouen, France
| | - Corinne Gower-Rousseau
- Public Health, Epidemiology and Economic Health Unit, EPIMAD Registry, Maison Régionale de la Recherche Clinique, University of Lille and Lille University Hospital, Lille, France.,LIRIC UMR 995, Team 5, INSERM and University of Lille, Lille, France
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Tanos R, Otandault A, Mollevi C, Bauer A, Tousch G, Picque Lasorsa L, El Messaoudi S, Colinge J, Colombo PE, Jacot W, Mazard T, Sayagués J, Gillet B, Pezet D, Ychou M, Thierry A. Towards a screening test for cancer by circulating DNA analysis. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz257.020] [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: 11/13/2022] Open
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Gillet B, Rogowski I, Monga-Dubreuil E, Begon M. Lower Trapezius Weakness and Shoulder Complex Biomechanics during the Tennis Serve. Med Sci Sports Exerc 2019; 51:2531-2539. [PMID: 31269005 DOI: 10.1249/mss.0000000000002079] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE This study aimed to assess the effect of lower trapezius (LT) weakness on humeral and scapular kinematics and shoulder muscle activity during the tennis serve. METHODS Fifteen competitive male tennis players (age, 23.8 ± 3.4 yr; height, 182.8 ± 6.7 cm; mass: 76.6 ± 8.7 kg; tennis experience: 15.6 ± 4.9 yr) performed two tennis serves before and after selective fatigue of the LT (25-min electric muscle stimulation). During each tennis serve, racket, humeral and scapular kinematics and the activity of 13 shoulder muscles were recorded using an optoelectronic system synchronized with indwelling and surface electromyography. The serve was split into five phases, that is, early and late cocking, acceleration, early and late follow-through. RESULTS Selective fatigue led to a 22.5% ± 10.4% strength decrease but did not alter maximum racket speed and humerothoracic joint kinematics. However, increased scapular upward rotation was observed in the acceleration (P = 0.02) and early follow-through (P = 0.01) phases. Decreased muscular activity was observed during the early cocking phase for the LT (P = 0.01), during the acceleration phase for the LT (P = 0.01), anterior deltoid (P = 0.03), pectoralis major (P = 0.04), and subscapularis (P = 0.03), and during the early follow-through phase for the anterior deltoid (P = 0.03) and LT (P = 0.04). CONCLUSIONS The LT weakness altered neither serve velocity nor humerothoracic joint kinematics, but impaired scapulothoracic kinematics and anterior shoulder muscle activation. Such alterations may reduce the subacromial space and jeopardize humeral head stability. These findings shed new light on the consequences of LT weakness, highlighting the importance of monitoring and strengthening this muscle in overhead athletes.
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Affiliation(s)
- Benoit Gillet
- Univ Lyon, University Claude Bernard Lyon1, Interuniversity Laboratory of Locomotion Biology, Villeurbanne, FRANCE.,Laboratory of Simulation and Movement Modeling (S2M), School of Kinesiology and Science of Physical Activity, Faculty of Medicine, University of Montréal, Montreal, Quebec, CANADA
| | - Isabelle Rogowski
- Univ Lyon, University Claude Bernard Lyon1, Interuniversity Laboratory of Locomotion Biology, Villeurbanne, FRANCE
| | - Elodie Monga-Dubreuil
- Laboratory of Simulation and Movement Modeling (S2M), School of Kinesiology and Science of Physical Activity, Faculty of Medicine, University of Montréal, Montreal, Quebec, CANADA
| | - Mickaël Begon
- Laboratory of Simulation and Movement Modeling (S2M), School of Kinesiology and Science of Physical Activity, Faculty of Medicine, University of Montréal, Montreal, Quebec, CANADA.,Research Center of the CHU SAINTE-JUSTINE Mother and Child University Hospital Center, Montréal, Quebec, CANADA
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Affiliation(s)
- Y. Blache
- Laboratoire Interuniversitaire de Biologie de la Motricité – EA 7424, UFRSTAPS, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
| | - B. Gillet
- Laboratoire Interuniversitaire de Biologie de la Motricité – EA 7424, UFRSTAPS, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
- Département de Kinésiologie, Laboratoire de Simulation et de Modélisation du Mouvement (S2M), Université de Montréal, Laval, QC, Canada
| | - J. Selin
- Laboratoire Interuniversitaire de Biologie de la Motricité – EA 7424, UFRSTAPS, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
| | - V. Sevrez
- Institut des Sciences du Mouvement Etienne-Jules Marey, Aix-Marseille Université, Marseille, France
| | - I. Rogowski
- Laboratoire Interuniversitaire de Biologie de la Motricité – EA 7424, UFRSTAPS, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
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Ghione S, Sarter H, Fumery M, Armengol-Debeir L, Savoye G, Ley D, Spyckerelle C, Pariente B, Peyrin-Biroulet L, Turck D, Gower-Rousseau C, Andre JM, Antonietti M, Aouakli A, Armand A, Aroichane I, Assi F, Aubet JP, Auxenfants E, Ayafi-Ramelot F, Bankovski D, Barbry B, Bardoux N, Baron P, Baudet A, Bazin B, Bebahani A, Becqwort JP, Benet V, Benali H, Benguigui C, Soussan BE, Bental A, Berkelmans I, Bernet J, Bernou K, Bernou-Dron C, Bertot P, Bertiaux-Vandaële N, Bertrand V, Billoud E, Biron N, Bismuth B, Bleuet M, Blondel F, Blondin V, Bohon P, Boniface E, Bonnière P, Bonvarlet E, Bonvarlet P, Boruchowicz A, Bostvironnois R, Boualit M, Bouche B, Boudaillez C, Bourgeaux C, Bourgeois M, Bourguet A, Bourienne A, Branche J, Bray G, Brazier F, Breban P, Brihier H, Brung-Lefebvre V, Bulois P, Burgiere P, Butel J, Canva JY, Canva-Delcambre V, Capron JP, Cardot F, Carpentier P, Cartier E, Cassar JF, Cassagnou M, Castex JF, Catala P, Cattan S, Catteau S, Caujolle B, Cayron G, Chandelier C, Chantre M, Charles J, Charneau T, Chavance-Thelu M, Chirita D, Choteau A, Claerbout JF, Clergue PY, Coevoet H, Cohen G, Collet R, Colombel JF, Coopman S, Corvisart J, Cortot A, Couttenier F, Crinquette JF, Crombe V, Dadamessi I, Dapvril V, Davion T, Dautreme S, Debas J, Degrave N, Dehont F, Delatre C, Delcenserie R, Delette O, Delgrange T, Delhoustal L, Delmotte JS, Demmane S, Deregnaucourt G, Descombes P, Desechalliers JP, Desmet P, Desreumaux P, Desseaux G, Desurmont P, Devienne A, Devouge E, Devred M, Devroux A, Dewailly A, Dharancy S, Di Fiore A, Djeddi D, Djedir R, Dreher-Duwat ML, Dubois R, Dubuque C, Ducatillon P, Duclay J, Ducrocq B, Ducrot F, Ducrotte P, Dufilho A, Duhamel C, Dujardin D, Dumant-Forest C, Dupas JL, Dupont F, Duranton Y, Duriez A, El Achkar K, El Farisi M, Elie C, Elie-Legrand MC, Elkhaki A, Eoche M, Evrard D, Evrard JP, Fatome A, Filoche B, Finet L, Flahaut M, Flamme C, Foissey D, Fournier P, Foutrein-Comes MC, Foutrein P, Fremond D, Frere T, Fumery M, Gallet P, Gamblin C, Ganga-Zandzou PS, Gérard R, Geslin G, Gheyssens Y, Ghossini N, Ghrib S, Gilbert T, Gillet B, Godard D, Godard P, Godchaux JM, Godchaux R, Goegebeur G, Goria O, Gottrand F, Gower P, Grandmaison B, Groux M, Guedon C, Guillard JF, Guillem L, Guillemot F, Guimber D, Haddouche B, Hakim S, Hanon D, Hautefeuille V, Heckestweiller P, Hecquet G, Hedde JP, Hellal H, Henneresse PE, Heyman B, Heraud M, Herve S, Hochain P, Houssin-Bailly L, Houcke P, Huguenin B, Iobagiu S, Ivanovic A, Iwanicki-Caron I, Janicki E, Jarry M, Jeu J, Joly JP, Jonas C, Katherin F, Kerleveo A, Khachfe A, Kiriakos A, Kiriakos J, Klein O, Kohut M, Kornhauser R, Koutsomanis D, Laberenne JE, Laffineur G, Lagarde M, Lannoy P, Lapchin J, Lapprand M, Laude D, Leblanc R, Lecieux P, Leclerc N, Le Couteulx C, Ledent J, Lefebvre J, Lefiliatre P, Legrand C, Le Grix A, Lelong P, Leluyer B, Lenaerts C, Lepileur L, Leplat A, Lepoutre-Dujardin E, Leroi H, Leroy MY, Lesage JP, Lesage X, Lesage J, Lescanne-Darchis I, Lescut J, Lescut D, Leurent B, Levy P, Lhermie M, Lion A, Lisambert B, Loire F, Louf S, Louvet A, Luciani M, Lucidarme D, Lugand J, Macaigne O, Maetz D, Maillard D, Mancheron H, Manolache O, Marks-Brunel AB, Marti R, Martin F, Martin G, Marzloff E, Mathurin P, Mauillon J, Maunoury V, Maupas JL, Mesnard B, Metayer P, Methari L, Meurisse B, Meurisse F, Michaud L, Mirmaran X, Modaine P, Monthe A, Morel L, Mortier PE, Moulin E, Mouterde O, Mudry J, Nachury M, Khac NE, Notteghem B, Ollevier V, Ostyn A, Ouraghi A, Ouvry D, Paillot B, Panien-Claudot N, Paoletti C, Papazian A, Parent B, Pariente B, Paris JC, Patrier P, Paupart L, Pauwels B, Pauwels M, Petit R, Piat M, Piotte S, Plane C, Plouvier B, Pollet E, Pommelet P, Pop D, Pordes C, Pouchain G, Prades P, Prevost A, Prevost JC, Quesnel B, Queuniet AM, Quinton JF, Rabache A, Rabelle P, Raclot G, Ratajczyk S, Rault D, Razemon V, Reix N, Revillon M, Richez C, Robinson P, Rodriguez J, Roger J, Roux JM, Rudelli A, Saber A, Savoye G, Schlosseberg P, Segrestin M, Seguy D, Serin M, Seryer A, Sevenet F, Shekh N, Silvie J, Simon V, Spyckerelle C, Talbodec N, Techy A, Thelu JL, Thevenin A, Thiebault H, Thomas J, Thorel JM, Tielman G, Tode M, Toisin J, Tonnel J, Touchais JY, Touze Y, Tranvouez JL, Triplet C, Turck D, Uhlen S, Vaillant E, Valmage C, Vanco D, Vandamme H, Vanderbecq E, Eecken VE, Vandermolen P, Vandevenne P, Vandeville L, Vandewalle A, Vandewalle C, Vaneslander P, Vanhoove JP, Vanrenterghem A, Varlet P, Vasies I, Verbiese G, Vernier-Massouille G, Vermelle P, Verne C, Vezilier-Cocq P, Vigneron B, Vincendet M, Viot J, Voiment YM, Wacrenier A, Waeghemaecker L, Wallez JY, Wantiez M, Wartel F, Weber J, Willocquet JL, Wizla N, Wolschies E, Zalar A, Zaouri B, Zellweger A, Ziade C. Dramatic Increase in Incidence of Ulcerative Colitis and Crohn's Disease (1988-2011): A Population-Based Study of French Adolescents. Am J Gastroenterol 2018; 113:265-272. [PMID: 28809388 DOI: 10.1038/ajg.2017.228] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [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: 12/02/2016] [Accepted: 06/08/2017] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Few data are available to describe the changes in incidence of pediatric-onset inflammatory bowel disease (IBD). The aim of this study was to describe changes in incidence and phenotypic presentation of pediatric-onset IBD in northern France during a 24-year period. METHODS Pediatric-onset IBD (<17 years) was issued from a population-based IBD study in France between 1988 and 2011. Age groups and digestive location were defined according to the Paris classification. RESULTS 1,350 incident cases were recorded (8.3% of all IBD) including 990 Crohn's disease (CD), 326 ulcerative colitis (UC) and 34 IBD unclassified (IBDU). Median age at diagnosis was similar in CD (14.4 years (Q1=11.8-Q3=16.0)) and UC (14.0 years (11.0-16.0)) and did not change over time. There were significantly more males with CD (females/males=0.82) than UC (females/males=1.25) (P=0.0042). Median time between onset of symptoms and IBD diagnosis was consistently 3 months (1-6). Mean incidence was 4.4/105 for IBD overall (3.2 for CD, 1.1 for UC and 0.1 for IBDU). From 1988-1990 to 2009-2011, a dramatic increase in incidences of both CD and UC were observed in adolescents (10-16 years): for CD from 4.2 to 9.5/105 (+126%; P<0.001) and for UC, from 1.6 to 4.1/105 (+156%; P<0.001). No modification in age or location at diagnosis was observed in either CD or UC. CONCLUSIONS In this population-based study, CD and UC incidences increased dramatically in adolescents across a 24-year span, suggesting that one or more strong environmental factors may predispose this population to IBD.
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Affiliation(s)
- Silvia Ghione
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Lille University Jeanne de Flandre Children's Hospital and Faculty of Medicine, Lille, France
| | - Hélène Sarter
- Public Health, Epidemiology and Economic Health, Epimad registry, Regional house of clinical research, Lille Hospital and University, Lille, France.,Lille Inflammation Research International Center LIRIC-UMR 995 Inserm-"IBD and environmental factors: epidemiology and functional analyses", Lille University, Lille, France
| | - Mathurin Fumery
- Gastroenterology Unit, Epimad registry, Amiens Hospital and University, Amiens, France
| | - Laura Armengol-Debeir
- Gastroenterology Unit, Epimad registry, Rouen Hospital and University, Rouen, France
| | - Guillaume Savoye
- Gastroenterology Unit, Epimad registry, Rouen Hospital and University, Rouen, France
| | - Delphine Ley
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Lille University Jeanne de Flandre Children's Hospital and Faculty of Medicine, Lille, France.,Lille Inflammation Research International Center LIRIC-UMR 995 Inserm-"IBD and environmental factors: epidemiology and functional analyses", Lille University, Lille, France
| | - Claire Spyckerelle
- Department of Pediatrics, St Vincent de Paul Hospital and Lille Catholic University, Lille, France
| | - Benjamin Pariente
- Lille Inflammation Research International Center LIRIC-UMR 995 Inserm-"IBD and environmental factors: epidemiology and functional analyses", Lille University, Lille, France.,Gastroenterology Unit, Epimad registry, Lille Hospital and University, Lille, France
| | | | - Dominique Turck
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Lille University Jeanne de Flandre Children's Hospital and Faculty of Medicine, Lille, France.,Lille Inflammation Research International Center LIRIC-UMR 995 Inserm-"IBD and environmental factors: epidemiology and functional analyses", Lille University, Lille, France
| | - Corinne Gower-Rousseau
- Public Health, Epidemiology and Economic Health, Epimad registry, Regional house of clinical research, Lille Hospital and University, Lille, France.,Lille Inflammation Research International Center LIRIC-UMR 995 Inserm-"IBD and environmental factors: epidemiology and functional analyses", Lille University, Lille, France
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Affiliation(s)
- B Gillet
- a Univ. Lyon, Lyon, France, Université Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, LIBM EA 7424, UFRSTAPS 27-29 , Villeurbanne Cedex , France.,b Université de Montréal, Montréal, Canada , Laboratoire de Simulation et de Modélisation du Mouvement, Laval, Canada
| | - M Begon
- b Université de Montréal, Montréal, Canada , Laboratoire de Simulation et de Modélisation du Mouvement, Laval, Canada.,c Centre de Recherche de l'hôpital Sainte Justine , Montréal , QC , Canada
| | - Y Blache
- a Univ. Lyon, Lyon, France, Université Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, LIBM EA 7424, UFRSTAPS 27-29 , Villeurbanne Cedex , France
| | - C Berger-Vachon
- d IFSTTAR, UMR_T9406, LBMC Laboratoire de Biomécanique et Mécanique des Chocs-F69675 , Bron , France.,e Ligue du Lyonnais de Tennis , Bron , France
| | - I Rogowski
- a Univ. Lyon, Lyon, France, Université Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, LIBM EA 7424, UFRSTAPS 27-29 , Villeurbanne Cedex , France
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Duricova D, Leroyer A, Savoye G, Sarter H, Pariente B, Aoucheta D, Armengol-Debeir L, Ley D, Turck D, Peyrin-Biroulet L, Gower-Rousseau C, Fumery M, Antonietti M, Aouakli A, Armand A, Aroichane I, Assi F, Aubet JP, Auxenfants E, Ayafi-Ramelot F, Bankovski D, Barbry B, Bardoux N, Baron P, Baudet A, Bazin B, Bebahani A, Becqwort JP, Benet V, Benali H, Benguigui C, Ben Soussan E, Bental A, Berkelmans I, Bernet J, Bernou K, Bernou-Dron C, Bertot P, Bertiaux-Vandaële N, Bertrand V, Billoud E, Biron N, Bismuth B, Bleuet M, Blondel F, Blondin V, Bohon P, Boniface E, Bonnière P, Bonvarlet E, Bonvarlet P, Boruchowicz A, Bostvironnois R, Boualit M, Bouche B, Boudaillez C, Bourgeaux C, Bourgeois M, Bourguet A, Bourienne A, Branche J, Bray G, Brazier F, Breban P, Brihier H, Brung-Lefebvre V, Bulois P, Burgiere P, Butel J, Canva JY, Canva-Delcambre V, Capron JP, Cardot F, Carpentier P, Cartier E, Cassar JF, Cassagnou M, Castex JF, Catala P, Cattan S, Catteau S, Caujolle B, Cayron G, Chandelier C, Chantre M, Charles J, Charneau T, Chavance-Thelu M, Chirita D, Choteau A, Claerbout JF, Clergue PY, Coevoet H, Cohen G, Collet R, Colombel JF, Coopman S, Corvisart J, Cortot A, Couttenier F, Crinquette JF, Crombe V, Dadamessi I, Dapvril V, Davion T, Dautreme S, Debas J, Degrave N, Dehont F, Delatre C, Delcenserie R, Delette O, Delgrange T, Delhoustal L, Delmotte JS, Demmane S, Deregnaucourt G, Descombes P, Desechalliers JP, Desmet P, Desreumaux P, Desseaux G, Desurmont P, Devienne A, Devouge E, Devred M, Devroux A, Dewailly A, Dharancy S, Di Fiore A, Djeddi D, Djedir R, Dreher-Duwat ML, Dubois R, Dubuque C, Ducatillon P, Duclay J, Ducrocq B, Ducrot F, Ducrotté P, Dufilho A, Duhamel C, Dujardin D, Dumant-Forest C, Dupas JL, Dupont F, Duranton Y, Duriez A, El Achkar K, El Farisi M, Elie C, Elie-Legrand MC, Elkhaki A, Eoche M, Evrard D, Evrard JP, Fatome A, Filoche B, Finet L, Flahaut M, Flamme C, Foissey D, Fournier P, Foutrein-Comes MC, Foutrein P, Fremond D, Frere T, Fumery M, Gallet P, Gamblin C, Ganga-Zandzou S, Gerard R, Geslin G, Gheyssens Y, Ghossini N, Ghrib S, Gilbert T, Gillet B, Godard D, Godard P, Godchaux JM, Godchaux R, Goegebeur G, Goria O, Gottrand F, Gower P, Grandmaison B, Groux M, Guedon C, Guillard JF, Guillem L, Guillemot F, Guimber D, Haddouche B, Hakim S, Hanon D, Hautefeuille V, Heckestweiller P, Hecquet G, Hedde JP, Hellal H, Henneresse PE, Heyman B, Heraud M, Herve S, Hochain P, Houssin-Bailly L, Houcke P, Huguenin B, Iobagiu S, Ivanovic A, Iwanicki-Caron I, Janicki E, Jarry M, Jeu J, Joly JP, Jonas C, Katherin F, Kerleveo A, Khachfe A, Kiriakos A, Kiriakos J, Klein O, Kohut M, Kornhauser R, Koutsomanis D, Laberenne JE, Laffineur G, Lagarde M, Lannoy P, Lapchin J, Lapprand M, Laude D, Leblanc R, Lecieux P, Leclerc N, Le Couteulx C, Ledent J, Lefebvre J, Lefiliatre P, Legrand C, Le Grix A, Lelong P, Leluyer B, Lenaerts C, Lepileur L, Leplat A, Lepoutre-Dujardin E, Leroi H, Leroy MY, Lesage JP, Lesage X, Lesage J, Lescanne-Darchis I, Lescut J, Lescut D, Leurent B, Levy P, Lhermie M, Lion A, Lisambert B, Loire F, Louf S, Louvet A, Luciani M, Lucidarme D, Lugand J, Macaigne O, Maetz D, Maillard D, Mancheron H, Manolache O, Marks-Brunel AB, Marti R, Martin F, Martin G, Marzloff E, Mathurin P, Mauillon J, Maunoury V, Maupas JL, Mesnard B, Metayer P, Methari L, Meurisse B, Meurisse F, Michaud L, Mirmaran X, Modaine P, Monthe A, Morel L, Mortier PE, Moulin E, Mouterde O, Mudry J, Nachury M, N’Guyen Khac E, Notteghem B, Ollevier V, Ostyn A, Ouraghi A, Ouvry D, Paillot B, Panien-Claudot N, Paoletti C, Papazian A, Parent B, Pariente B, Paris JC, Patrier P, Paupart L, Pauwels B, Pauwels M, Petit R, Piat M, Piotte S, Plane C, Plouvier B, Pollet E, Pommelet P, Pop D, Pordes C, Pouchain G, Prades P, Prevost A, Prevost JC, Quesnel B, Queuniet AM, Quinton JF, Rabache A, Rabelle P, Raclot G, Ratajczyk S, Rault D, Razemon V, Reix N, Revillon M, Richez C, Robinson P, Rodriguez J, Roger J, Roux JM, Rudelli A, Saber A, Savoye G, Schlosseberg P, Segrestin M, Seguy D, Serin M, Seryer A, Sevenet F, Shekh N, Silvie J, Simon V, Spyckerelle C, Talbodec N, Techy A, Thelu JL, Thevenin A, Thiebault H, Thomas J, Thorel JM, Tielman G, Tode M, Toisin J, Tonnel J, Touchais JY, Touze Y, Tranvouez JL, Triplet C, Turck D, Uhlen S, Vaillant E, Valmage C, Vanco D, Vandamme H, Vanderbecq E, Vander Eecken E, Vandermolen P, Vandevenne P, Vandeville L, Vandewalle A, Vandewalle C, Vaneslander P, Vanhoove JP, Vanrenterghem A, Varlet P, Vasies I, Verbiese G, Vernier-Massouille G, Vermelle P, Verne C, Vezilier-Cocq P, Vigneron B, Vincendet M, Viot J, Voiment YM, Wacrenier A, Waeghemaecker L, Wallez JY, Wantiez M, Wartel F, Weber J, Willocquet JL, Wizla N, Wolschies E, Zalar A, Zaouri B, Zellweger A, Ziade C. Extra-intestinal Manifestations at Diagnosis in Paediatric- and Elderly-onset Ulcerative Colitis are Associated With a More Severe Disease Outcome: A Population-based Study. J Crohns Colitis 2017; 11:1326-1334. [PMID: 28981648 DOI: 10.1093/ecco-jcc/jjx092] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 04/06/2017] [Accepted: 07/05/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Data on extra-intestinal manifestations [EIM] and their impact on the disease course of ulcerative colitis [UC] in population-based cohorts are scarce, particularly in paediatric- and elderly-onset UC patients. The aims of this population-based study were to assess: 1] the occurrence of EIM in paediatric- and elderly-onset UC; 2] the factors associated with EIM; and 3] their impact on long-term disease outcome. METHODS Paediatric-onset [< 17 years at diagnosis] and elderly-onset UC patients [> 60 years at diagnosis] from a French prospective population-based registry [EPIMAD] were included. Data on EIM and other clinical factors at diagnosis and at maximal follow-up were collected. RESULTS In all, 158 paediatric- and 470 elderly-onset patients were included [median age at diagnosis 14.5 and 68.8 years, median follow-up 11.2 and 6.2 years, respectively]. EIM occurred in 8.9% of childhood- and 3% of elderly-onset patients at diagnosis and in 16.7% and 2.2% of individuals during follow-up [p < 0.01], respectively. The most frequent EIM was joint involvement [15.8% of paediatric onset and 2.6% of elderly-onset]. Presence of EIM at diagnosis was associated with more severe disease course [need for immunosuppressants or biologic therapy or colectomy] in both paediatric- and elderly-onset UC (hazard ratio [HR] = 2.0, 95% confidence interval [CI]: 1.0-4.2; and HR = 2.8, 0.9-7.9, respectively). Extensive colitis was another independent risk factor in both age groups. CONCLUSIONS Elderly-onset UC patients had lower risk of EIM either at diagnosis or during follow-up than paediatric-onset individuals. EIM at diagnosis predicted more severe disease outcome, including need for immunosuppressive or biologic therapy or surgery, in both paediatric- and elderly-onset UC.
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Affiliation(s)
- Dana Duricova
- Public Health, Epidemiology and Economic Health, Registre EPIMAD, Lille University and Hospital, Lille, France
| | - Ariane Leroyer
- Public Health, Epidemiology and Economic Health, Registre EPIMAD, Lille University and Hospital, Lille, France
| | - Guillaume Savoye
- Gastroenterology Unit, EPIMAD Registry, Rouen University Hospital, Rouen, France
| | - Hélène Sarter
- Public Health, Epidemiology and Economic Health, Registre EPIMAD, Lille University and Hospital, Lille, France.,Lille Inflammation Research International Center LIRIC-UMR 995 Inserm Lille 2 University, Lille, France
| | - Benjamin Pariente
- Gastroenterology Unit, Hôpital Huriez, Lille University Hospital, Lille, France
| | - Djamila Aoucheta
- Associated Medical Director, Immunology, MSD France, Courbevoie cedex, France
| | | | - Delphine Ley
- Lille Inflammation Research International Center LIRIC-UMR 995 Inserm Lille 2 University, Lille, France.,Division of Gastroenterology, Hepatology and Nutrition, Lille University Jeanne de Flandre Children's Hospital, University of Lille, Lille, France
| | - Dominique Turck
- Lille Inflammation Research International Center LIRIC-UMR 995 Inserm Lille 2 University, Lille, France.,Division of Gastroenterology, Hepatology and Nutrition, Lille University Jeanne de Flandre Children's Hospital, University of Lille, Lille, France
| | | | - Corinne Gower-Rousseau
- Public Health, Epidemiology and Economic Health, Registre EPIMAD, Lille University and Hospital, Lille, France.,Lille Inflammation Research International Center LIRIC-UMR 995 Inserm Lille 2 University, Lille, France
| | - Mathurin Fumery
- Lille Inflammation Research International Center LIRIC-UMR 995 Inserm Lille 2 University, Lille, France.,Gastroenterology Unit, EPIMAD Registry, Amiens University Hospital, Amiens, France
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Gillet B, Doan BT, Verre-Sebrie C, Fedeli O, Beloeil JC, Peres M, Barrere B, Seylaz J, Morin S, Koenig J, Sebille A. 2D NMR studies on muscle and cerebral metabolism in vivo. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1994910697] [Citation(s) in RCA: 2] [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: 11/14/2022]
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Gillet B, Begon M, Sevrez V, Berger-Vachon C, Rogowski I. Adaptive Alterations in Shoulder Range of Motion and Strength in Young Tennis Players. J Athl Train 2017; 52:137-144. [PMID: 28145740 DOI: 10.4085/1062-6050.52.1.10] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 11/09/2022]
Abstract
CONTEXT Playing tennis requires unilateral and intensive movement of the upper limb, which may lead to functional adaptations of the shoulder and an increased injury risk. Identifying which athletes will be future elite tennis players starts at 5 to 6 years of age. Therefore, highly skilled players practice intensively in their childhood. However, whether these functional changes occur during the prepubertal years has not been established. OBJECTIVES To assess changes in glenohumeral-joint-rotation range of motion and strength of the shoulder-complex muscles in prepubertal elite tennis players. DESIGN Cross-sectional study. SETTING Tennis training sports facilities. PATIENTS OR OTHER PARTICIPANTS Sixty-seven male tennis players (age range = 7-13 years) selected by a regional tennis center of excellence were divided into 3 biological age groups relative to their predicted age at peak height velocity: greater than 4 (n = 26; age = 8.7 ± 0.7 years, height = 132.4 ± 12.9 cm, mass = 27.8 ± 3.8 kg), 3 to 4 (n = 21; age = 10.3 ± 0.6 years, height = 144.9 ± 5.7 cm, mass = 34.7 ± 4.0 kg), and 2 (n = 20; age = 12.8 ± 1.4 years, height = 158.5 ± 8.7 cm, mass = 43.0 ± 8.2 kg) years before their age at peak height velocity. MAIN OUTCOME MEASURES(S) We measured the internal- and external-rotation ranges of motion of the glenohumeral joint using a goniometer and calculated the total arc of motion. Maximal isometric strength of 8 shoulder muscles was measured using a handheld dynamometer. Strength values were normalized to body weight and used to calculate 4 agonist-to-antagonist strength ratios. RESULTS The total arc of motion of the glenohumeral joint decreased gradually with biological age (P ≤ .01) due to the decrease in internal-rotation range of motion (P < .001). Absolute strength increased gradually with biological age (P < .001), but the relative strengths and ratios remained similar. CONCLUSIONS Functional adaptations of the shoulder seen in adolescent and adult tennis players were observed in healthy prepubertal players. This knowledge could help clinicians and coaches more effectively monitor shoulder adaptations to tennis practice during the prepubertal years.
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Affiliation(s)
- Benoit Gillet
- Université de Lyon, France.,Université Claude Bernard Lyon 1 Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne Cedex, France.,Laboratoire de Simulation et de Modélisation du Mouvement (S2M), Département de Kinésiologie, Université de Montréal, Laval, QC, Canada
| | - Mickaël Begon
- Université Claude Bernard Lyon 1 Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne Cedex, France.,Centre de Réadaptation Marie-Enfant-Centre Hospitalier d'Université Sainte Justine, Montréal, QC, Canada
| | - Violaine Sevrez
- Aix-Marseille Université, Institut des Sciences du Mouvement Etienne-Jules Marey, Marseille, France
| | - Christian Berger-Vachon
- Université de Lyon, France.,IFSTTAR, Laboratoire de Biomécanique et Mécanique des Chocs, Bron, France.,Ligue du Lyonnais de Tennis, Bron, France
| | - Isabelle Rogowski
- Université de Lyon, France.,Université Claude Bernard Lyon 1 Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne Cedex, France
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Henriot I, Launay E, Boubaya M, Cremet L, Illiaquer M, Caillon H, Desjonquères A, Gillet B, Béné MC, Eveillard M. New parameters on the hematology analyzer XN-10 (SysmexTM) allow to distinguish childhood bacterial and viral infections. Int J Lab Hematol 2016; 39:14-20. [DOI: 10.1111/ijlh.12562] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 07/11/2016] [Indexed: 12/11/2022]
Affiliation(s)
- I. Henriot
- Hematology Biology Department; Nantes University Hospital; Nantes France
| | - E. Launay
- Department of Pediatrics; Nantes University Hospital; Nantes France
| | - M. Boubaya
- Clinical Research Department; Hôpitaux Universitaires Paris-Seine-Saint-Denis; Hôpital Avicenne, AP-HP; Bobigny France
| | - L. Cremet
- Bacteriology Department; Nantes University Hospital; Nantes France
| | - M. Illiaquer
- Virology Department; Nantes University Hospital; Nantes France
| | - H. Caillon
- Biochemistry Department; Nantes University Hospital; Nantes France
| | - A. Desjonquères
- Hematology Biology Department; Nantes University Hospital; Nantes France
| | - B. Gillet
- Hematology Biology Department; Nantes University Hospital; Nantes France
| | - M. C. Béné
- Hematology Biology Department; Nantes University Hospital; Nantes France
| | - M. Eveillard
- Hematology Biology Department; Nantes University Hospital; Nantes France
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Gillet B, Berger-Vachon C, Rogowski I. Scapulothoracic kinematics during scaption after one year of tennis practice in elite girl players. Comput Methods Biomech Biomed Engin 2015; 18 Suppl 1:1946-7. [PMID: 26274056 DOI: 10.1080/10255842.2015.1069614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- B Gillet
- a Université de Lyon , Lyon , France.,b Université Lyon 1 , Lyon , France.,c Centre de Recherche et d'Innovation sur le Sport-EA 647 , UFRSTAPS 27-29 , Villeurbanne Cedex , France
| | - C Berger-Vachon
- a Université de Lyon , Lyon , France.,b Université Lyon 1 , Lyon , France.,d IFSTTAR, UMR_T9406, LBMC Laboratoire de Biomécanique et Mécanique des Chocs , Bron , France.,e Ligue du Lyonnais de Tennis , Bron , France
| | - I Rogowski
- a Université de Lyon , Lyon , France.,b Université Lyon 1 , Lyon , France.,c Centre de Recherche et d'Innovation sur le Sport-EA 647 , UFRSTAPS 27-29 , Villeurbanne Cedex , France
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Racaud V, Gillet B, Mercier Q, Creveaux T, Sevrez V, Rogowski I. Bilateral comparison of scapulothoracic kinematics during scaption in girl tennis players. Comput Methods Biomech Biomed Engin 2014; 17 Suppl 1:154-5. [PMID: 25074211 DOI: 10.1080/10255842.2014.931619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- V Racaud
- a Université de Lyon, Université Lyon 1 , Centre de Recherche et d'Innovation sur le Sport - EA 647 , UFRSTAPS; 27-29, boulevard du 11 novembre 1918, 69622 Villeurbanne Cedex, France
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Bogaert-Buchmann A, Poittevin M, Po C, Dupont D, Sebrié C, Tomita Y, Trandinh A, Seylaz J, Pinard E, Méric P, Kubis N, Gillet B. Spatial and temporal MRI profile of ischemic tissue after the acute stages of a permanent mouse model of stroke. Open Neuroimag J 2013; 7:4-14. [PMID: 23459141 PMCID: PMC3580904 DOI: 10.2174/1874440001307010004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 07/25/2012] [Accepted: 07/29/2012] [Indexed: 11/22/2022] Open
Abstract
OBJECT To characterize the progression of injured tissue resulting from a permanent focal cerebral ischemia after the acute phase, Magnetic Resonance Imaging (MRI) monitoring was performed on adult male C57BL/6J mice in the subacute stages, and correlated to histological analyses. MATERIAL AND METHODS Lesions were induced by electrocoagulation of the middle cerebral artery. Serial MRI measurements and weighted-images (T2, T1, T2* and Diffusion Tensor Imaging) were performed on a 9.4T scanner. Histological data (Cresyl-Violet staining and laminin-, Iba1- and GFAP-immunostainings) were obtained 1 and 2 weeks after the stroke. RESULTS Two days after stroke, tissues assumed to correspond to the infarct core, were detected as a hyperintensity signal area in T2-weighted images. One week later, low-intensity signal areas appeared. Longitudinal MRI study showed that these areas remained present over the following week, and was mainly linked to a drop of the T2 relaxation time value in the corresponding tissues. Correlation with histological data and immuno-histochemistry showed that these areas corresponded to microglial cells. CONCLUSION The present data provide, for the first time detailed MRI parameters of microglial cells dynamics, allowing its non-invasive monitoring during the chronic stages of a stroke. This could be particularly interesting in regards to emerging anti-inflammatory stroke therapies.
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Affiliation(s)
- A Bogaert-Buchmann
- University Orsay Paris-sud, IR4M, UMR 8081, Bat 220, Orsay, F-91405, France ; CNRS, Orsay, F-91405, France
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Chen DS, Feltquate DM, Smothers F, Hoos A, Langermann S, Marshall S, May R, Fleming M, Hodi FS, Senderowicz A, Wiman KG, de Dosso S, Fiedler W, Gianni L, Cresta S, Schulze-Bergkamen HB, Gurrieri L, Salzberg M, Dietrich B, Danielczyk A, Baumeister H, Goletz S, Sessa C, Strumberg D, Schultheis B, Santel A, Gebhardt F, Meyer-Sabellek W, Keil O, Giese K, Kaufmann J, Maio M, Choy G, Covre A, Parisi G, Nicolay H, Fratta E, Fonsatti E, Sigalotti L, Coral S, Taverna P, Azab M, Deutsch E, Lepechoux C, Pignon JP, Tao YT, Rivera S, Bourgier BC, Angokai M, Bahleda R, Slimane K, Angevin E, Besse BB, Soria JC, Dragnev K, Beumer JH, Anyang B, Ma T, Galimberti F, Erkmen CP, Nugent W, Rigas J, Abraham K, Johnstone D, Memoli V, Dmitrovsky E, Voest EE, Siu L, Janku F, Soria JC, Tsimberidou A, Kurzrock R, Tabernero J, Rodon J, Berger R, Onn A, Batist G, Bresson C, Lazar V, Molenaar JJ, Koster J, Ebus M, Zwijnenburg DA, van Sluis P, Lamers F, Schild L, van der Ploeg I, Caron HN, Versteeg R, Pouyssegur J, Marchiq I, Chiche J, Roux D, Le Floch R, Critchlow SE, Wooster RF, Agresta S, Yen KE, Janne PA, Plummer ER, Trinchieri G, Ellis L, Chan SL, Yeo W, Chan AT, Mouliere F, El Messaoudi S, Gongora C, Lamy PJ, del Rio M, Lopez-Crapez E, Gillet B, Mathonnet M, Pezet D, Ychou M, Thierry AR, Ribrag V, Vainchenker W, Constantinescu S, Keilhack H, Umelo IA, Noeparast A, Chen G, Renard M, Geers C, Vansteenkiste J, Teugels E, de Greve J, Rixe O, Qi X, Chu Z, Celerier J, Leconte L, Minet N, Pakradouni J, Kaur B, Cuttitta F, Wagner AJ, Zhang YX, Sicinska E, Czaplinski JT, Remillard SP, Demetri GD, Weng S, Debussche L, Agoni L, Reddy EP, Guha C, Silence K, Thibault A, de Haard H, Dreier T, Ulrichts P, Moshir M, Gabriels S, Luo J, Carter C, Rajan A, Khozin S, Thomas A, Lopez-Chavez A, Brzezniak C, Doyle L, Keen C, Manu M, Raffeld M, Giaccone G, Lutzker S, Melief JM, Eckhardt SG, Trusolino L, Migliardi G, Zanella ER, Cottino F, Galimi F, Sassi F, Marsoni S, Comoglio PM, Bertotti A, Hidalgo M, Weroha SJ, Haluska P, Becker MA, Harrington SC, Goodman KM, Gonzalez SE, al Hilli M, Butler KA, Kalli KR, Oberg AL, Huijbers IJ, Bin Ali R, Pritchard C, Cozijnsen M, Proost N, Song JY, Krimpenfort P, Michalak E, Jonkers J, Berns A, Banerji U, Stewart A, Thavasu P, Banerjee S, Kaye SB. Lectures. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt042] [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: 11/12/2022] Open
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Mouliere F, El Messaoudi S, Gongora C, Lamy P, del Rio M, Lopez-Crapez E, Gillet B, Mathonnet M, Pezet D, Ychou M, Thierry A. Personalized Medicine by Analyzing Circulating DNA: Application to the Management Care of Colorectal Cancer Patients. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt042.29] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Pottier P, Hardouin J, Lejeune S, Jolliet P, Gillet B, Planchon B. Immobilization and the risk of venous thromboembolism. A meta-analysis on epidemiological studies. Thromb Res 2009; 124:468-76. [DOI: 10.1016/j.thromres.2009.05.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Revised: 04/27/2009] [Accepted: 05/03/2009] [Indexed: 10/20/2022]
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Miranda R, Sebrie C, Degrouard J, Gillet B, Jaillard D, Laroche S, Vaillend C. Reorganization of Inhibitory Synapses and Increased PSD Length of Perforated Excitatory Synapses in Hippocampal Area CA1 of Dystrophin-Deficient mdx Mice. Cereb Cortex 2008; 19:876-88. [DOI: 10.1093/cercor/bhn135] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Smirnov P, Gazeau F, Beloeil JC, Doan BT, Wilhelm C, Gillet B. Single-cell detection by gradient echo 9.4 T MRI: a parametric study. Contrast Media Mol Imaging 2007; 1:165-74. [PMID: 17193693 DOI: 10.1002/cmmi.104] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Recent studies have shown that cell migration can be monitored in vivo by magnetic resonance imaging after intracellular contrast agent incorporation. This is due to the dephasing effect on proton magnetization of the local magnetic field created by a labelled cell. Anionic iron oxide nanoparticles (AMNP) are among the most efficient and non-toxic contrast agents to be spontaneously taken up by a wide variety of cells. Here we measured the iron load and magnetization of HeLa tumour cells labelled with AMNP, as a function of the external magnetic field. High-resolution gradient echo 9.4 T MRI detected individual labelled cells, whereas spin echo sequences were poorly sensitive. We then conducted a systematic study in order to determine the gradient echo sequence parameters (echo time, cell magnetization and resolution) most suitable for in vivo identification of single cells.
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Affiliation(s)
- P Smirnov
- Laboratoire Matière et Systèmes Complexes, Université Paris 7, Denis Diderot and CNRS UMR 7057, 140, rue de Lourmel, 75015 Paris, France.
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Daoud-Mahammed S, Ringard-Lefebvre C, Razzouq N, Rosilio V, Gillet B, Couvreur P, Amiel C, Gref R. Spontaneous association of hydrophobized dextran and poly-β-cyclodextrin into nanoassemblies. J Colloid Interface Sci 2007; 307:83-93. [PMID: 17126360 DOI: 10.1016/j.jcis.2006.10.072] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2006] [Revised: 09/29/2006] [Accepted: 10/30/2006] [Indexed: 11/24/2022]
Abstract
New nanoassemblies were instantaneously prepared by mixing two aqueous solutions, one containing a beta-cyclodextrin polymer (pbetaCD), and the other a hydrophobically modified by alkyl chains dextran (MD). The formation mechanism and the inner structure of these nanoassemblies were analysed using surface tension measurements and (1)H NMR spectroscopy. The effect of a hydrophobic guest molecule, such as benzophenone (BZ), on the formation and stability of the nanoassemblies was also evaluated. MD exhibited the typical behaviour of a soluble amphiphilic molecule and adsorbed at the air/water interface. Whereas the injection of native beta-CDs in the solution beneath the adsorbed MD monolayer did not produce any change in the surface tension, that of the pbetaCD resulted in an increase in the surface tension, indicating the desorption of the polymer from the interface. This result accounts for a cooperative effect of beta-CDs linked together in the pbetaCD polymer on dextran desorption. The presence of benzophenone in the system hindered the sequestration of dextran alkyl moieties by beta-CD in the polymer without impeding the formation of associative nanoassemblies of 100-200 nm. (1)H NMR investigations demonstrated that, in the BZ-loaded nanoassemblies, the hydrophobic molecule was mainly located into the cyclodextrin cavities.
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Gazeau F, Smirnov P, Fortin J, Wilhelm C, Gillet B. CMR 2005: 9.02: Detection of single cells by high-field MRI. Contrast Media Mol Imaging 2006. [DOI: 10.1002/cmmi.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Villemson A, Couvreur P, Gillet B, Larionova N, Gref R. Dextran-poly-ε-caprolactone micro- and nanoparticles: preparation, characterization and tamoxifen solubilization. J Drug Deliv Sci Technol 2006. [DOI: 10.1016/s1773-2247(06)50055-3] [Citation(s) in RCA: 10] [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: 11/25/2022]
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Gillet B, Sebrié C, Bogaert A, Bléneau S, de la Porte S, Beloeil JC. Study of muscle regeneration using in vitro 2D 1H spectroscopy. Biochim Biophys Acta Gen Subj 2005; 1724:333-44. [PMID: 15936151 DOI: 10.1016/j.bbagen.2005.04.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2005] [Revised: 04/20/2005] [Accepted: 04/22/2005] [Indexed: 11/17/2022]
Abstract
The in vivo spectrum of regenerating muscles shows a specific cross-correlation signal assigned to the (n-3) fatty acyl chain, which peaks during the myoblast fusion phase. In order to identify the origin of this signal and to take all the lipid metabolites into account, we investigated the degeneration-regeneration process by 1H 2D NMR of lipid muscle extracts. We observed an increase in the total amount of lipids during the regeneration process, although the lipid profile did not show any drastic change during this process. The changes in the NMR signal observed in vivo and, in particular, the appearance of the specific (n-3) fatty acyl chain signal appears to arise from mobile lipid compartments located in fusing cells.
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Affiliation(s)
- B Gillet
- Institut de Chimie des Substances Naturelles UPR 2301, CNRS, 91198 Gif sur Yvette cedex, France.
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Méric P, Autret G, Doan BT, Gillet B, Sébrié C, Beloeil JC. In vivo 2D magnetic resonance spectroscopy of small animals. MAGMA 2004; 17:317-38. [PMID: 15625585 DOI: 10.1007/s10334-004-0084-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2004] [Revised: 11/02/2004] [Accepted: 11/02/2004] [Indexed: 01/05/2023]
Abstract
Localized in vivo NMR spectroscopy, chemical shift imaging or multi-voxel spectroscopy are potentially useful tools in small animals that are complementary to MRI, adding biochemical information to the mainly anatomical data provided by imaging of water protons. However the contribution of such methods remains hampered by the low spectral resolution of the in vivo 1D spectra. Two-dimensional methods widely developed for in vitro studies have been proposed as suitable approaches to overcome these limitations in resolution. The different homonuclear and heteronuclear sequences adapted to in vivo studies are reviewed. Their specific contributions to the spectral resolution of spectroscopic data and their limitations for in vivo investigations are discussed. The applications to experimental models of pathological processes or pharmacological treatment in mainly brain and muscle are presented. According to their combined sensitivity, acquisition duration and spatial resolution, the heteronuclear 2D experiments, which are mainly used for 1H detected-13C spectroscopy after administration of 13C-labeled compounds, appear to be less efficient than 1H detected-13C 1D methods at high field. However, the applications of 2D proton homonuclear methods show that they remain the best tools for in vivo studies when an improved resolution is required.
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Affiliation(s)
- P Méric
- Laboratoire de RMN Biologique, ICSN-CNRS, Avenue de la Terrasse, 91198, Gif sur Yvette, France.
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Joubert F, Mateo P, Gillet B, Beloeil JC, Mazet JL, Hoerter JA. CK flux or direct ATP transfer: versatility of energy transfer pathways evidenced by NMR in the perfused heart. Mol Cell Biochem 2004; 256-257:43-58. [PMID: 14977169 DOI: 10.1023/b:mcbi.0000009858.41434.fc] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [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: 11/12/2022]
Abstract
How the myocardium is able to permanently coordinate its intracellular fluxes of ATP synthesis, transfer and utilization is difficult to investigate in the whole organ due to the cellular complexity. The adult myocardium represents a paradigm of an energetically compartmented cell since 50% of total CK activity is bound in the vicinity of other enzymes (myofibrillar sarcolemmal and sarcoplasmic reticulum ATPases as well as mitochondrial adenine nucleotide translocator, ANT). Such vicinity of enzymes is well known in vitro as well as in preparations of skinned fibers to influence the kinetic properties of these enzymes and thus the functioning of the subcellular organelles. Intracellular compartmentation has often been neglected in the NMR analysis of CK kinetics in the whole organ. It is indeed a methodological challenge to reveal subcellular kinetics in a working organ by a global approach such as NMR. To get insight in the energy transfer pathway in the perfused rat heart, we developed a combined analysis of several protocols of magnetization transfer associated with biochemical data and quantitatively evaluated which scheme of energetic exchange best describes the NMR data. This allows to show the kinetic compartmentation of subcellular CKs and to quantify their fluxes. Interestingly, we could show that the energy transfer pathway shifts from the phosphocreatine shuttle in the oxygenated perfused heart to a direct ATP diffusion from mitochondria to cytosol under moderate inhibition of ATP synthesis. Furthermore using NMR measured fluxes and the known kinetic properties of the enzymes, it is possible to model the system, estimate local ADP concentrations and propose hypothesis for the versatility of energy transfer pathway. In the normoxic heart, a 3-fold ADP gradient was found between mitochondrial intermembrane space, cytosol and ADP in the vicinity of ATPases. The shift from PCr to ATP transport observed when ATP synthesis decreases might result from a balance in the activity of two populations of ANT, either coupled or uncoupled to CK. We believe this NMR approach could be a valuable tool to reinvestigate the control of respiration by ADP in the whole heart reconciling the biochemical knowledge of mitochondrial obtained in vitro or in skinned fibers with data on the whole heart as well as to identify the implication of bioenergetics in the pathological heart.
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Affiliation(s)
- F Joubert
- U-446 INSERM, Cardiologie Cellulaire et Moléculaire, Université Paris-Sud, Chatenay Malabry, France
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Delmas F, Beloeil JC, van der Sanden BP, Nicolay K, Gillet B. Two-voxel localization sequence for in vivo two-dimensional homonuclear correlation spectroscopy. J Magn Reson 2001; 149:119-125. [PMID: 11273760 DOI: 10.1006/jmre.2000.2280] [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] [Indexed: 05/23/2023]
Abstract
The combination of localized 2D 1H MR correlation spectroscopy and Hadamard encoding allows the simultaneous acquisition of multiple volumes of interest without an increase in the experimental duration, compared to single-voxel acquisition. In the present study, 2D correlation spectra were acquired simultaneously within 20 to 40 min in two voxels located in each hemisphere of the rat brain. An intervoxel distance of 20% of the voxel size was sufficient to limit spatial contamination. The following cerebral metabolites gave detectable crosspeaks: N-acetylaspartate, the glutamate/glutamine pool, aspartate, phosphoethanolamine, glucose, glutathione, taurine, myo-inositols, lactate, threonine, gamma-aminobutyric acid, and alanine. Most of the metabolites were measured without contamination of other resonances.
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Affiliation(s)
- F Delmas
- Laboratoire de RMN Biologique, ICSN-CNRS, Gif sur Yvette, 91198, France
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Joubert F, Vrezas I, Mateo P, Gillet B, Beloeil JC, Soboll S, Hoerter JA. Cardiac creatine kinase metabolite compartments revealed by NMR magnetization transfer spectroscopy and subcellular fractionation. Biochemistry 2001; 40:2129-37. [PMID: 11329281 DOI: 10.1021/bi001695j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 11/29/2022]
Abstract
In the perfused rat heart NMR inversion transfer revealed the existence of a compartment of ATP not exchanging through creatine kinase (CK), as demonstrated by an apparent discrepancy between the forward (F(f)) and reverse (F(r)) CK flux if this compartment was neglected in the analysis [Joubert et al. (2000) Biophys. J. 79, 1-13]. To localize this compartment, CK fluxes were measured by inversion of PCr (inv-PCr) or gamma ATP (inv-ATP), and the distribution of metabolites between mitochondria and cytosol was studied by subcellular fractionation. Physiological conditions were designed to modify the concentration and distribution of CK metabolites (control, adenylate depletion, inhibition of respiration, KCl arrest). Depending on cardiac activity, mitochondrial ATP (mito-ATP) assessed by fractionation varied from 11% to 30% of total ATP. In addition, the apparent flux discrepancy increased together with mito-ATP (F(f)/F(r) ranged from 0.85 to 0.50 in inv-PCr and from 1.13 to 1.88 in inv-ATP). Under conditions masking the influence of the ATP-P(i) exchange on CK flux, the ATP compartment could be directly quantified by the apparent flux discrepancy; its size was similar to that of mito-ATP measured by fractionation. Thus NMR inversion technique is a potential tool to assess metabolite compartmentation in the whole organ.
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Affiliation(s)
- F Joubert
- Institut National de la Santé et de la Recherche Médicale U-446, Cardiologie Cellulaire et Moléculaire, Université Paris-Sud, Chatenay Malabry, France
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Joubert F, Gillet B, Mazet JL, Mateo P, Beloeil J, Hoerter JA. Evidence for myocardial ATP compartmentation from NMR inversion transfer analysis of creatine kinase fluxes. Biophys J 2000; 79:1-13. [PMID: 10866933 PMCID: PMC1300911 DOI: 10.1016/s0006-3495(00)76269-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [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: 11/18/2022] Open
Abstract
The interpretation of creatine kinase (CK) flux measured by (31)P NMR magnetization transfer in vivo is complex because of the presence of competing reactions, metabolite compartmentation, and CK isozyme localization. In the isovolumic perfused rat heart, we considered the influence of both ATP compartmentation and ATP-P(i) exchange on the forward (F(f): PCr --> ATP) and reverse (F(r)) CK fluxes derived from complete analysis of inversion transfer. Although F(f) should equal F(r) because of the steady state, in both protocols when PCr (inv-PCr) or ATP (inv-ATP) was inverted and the contribution of ATP-P(i) was masked by saturation of P(i) (sat-P(i)), F(f)/F(r) significantly differed from 1 (0.80 +/- 0.06 or 1.32 +/- 0.06, respectively, n = 5). These discrepancies could be explained by a compartment of ATP (f(ATP)) not involved in CK. Consistently, neglecting ATP compartmentation in the analysis of CK in vitro results in an underestimation of F(f)/F(r) for inv-PCr and its overestimation for inv-ATP. Both protocols gave access to f(ATP) if the system was adequately analyzed. The fraction of ATP not involved in CK reaction in a heart performing medium work amounts to 20-33% of cellular ATP. Finally, the data suggest that the effect of sat-P(i) might not result only from the masking of ATP-P(i) exchange.
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Affiliation(s)
- F Joubert
- Institut National de la Santé et de la Recherche Médicale U-446, Laboratory of Cellular and Molecular Cardiology, Université Paris-Sud, Chatenay Malabry, France
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Rey P, Gillet B, Römer S, Eymery F, Massimino J, Peltier G, Kuntz M. Over-expression of a pepper plastid lipid-associated protein in tobacco leads to changes in plastid ultrastructure and plant development upon stress. Plant J 2000; 21:483-94. [PMID: 10758499 DOI: 10.1046/j.1365-313x.2000.00699.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Proteins homologous to fibrillin, a pepper plastid lipid-associated protein involved in carotenoid storage in fruit chromoplasts, have been recently identified in leaf chloroplasts from several species and shown to be induced upon environmental stress. To further investigate the role of the protein, transgenic Nicotiana tabacum plants over-expressing fibrillin using a constitutive promoter were generated. Transgenics grown under standard light intensities (300 micromol photons m-2 sec-1) were found to contain substantial amounts of fibrillin in flowers and leaves. In leaves, the protein was immunolocalized within chloroplasts in both stromal and thylakoid subfractions. No change was noticed in thylakoid structures from transgenics, but chloroplasts contained an increased number of plastoglobules organized in clusters. In petals, leucoplasts were also found to contain more agglutinated plastoglobules. The effects of environmental factors on fibrillin gene expression and protein localization were studied in tobacco leaves. Less fibrillin was present in plants grown under low light intensities, which can be explained by the involvement of a light-dependent splicing step in the control of fibrillin gene expression in leaves. Analysis of protein subfractions from plants subjected to drought or high light showed that both stresses resulted in fibrillin association with thylakoids. Whereas no growth difference between wild-type (WT) and transgenic plants was noticed under low light conditions, transgenics exhibit a longer main stem, enhanced development of lateral stems and accelerated floral development under higher light intensities. These data suggest that fibrillin-related proteins fulfil an important function in plant development in relation to environmental constraints.
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Affiliation(s)
- P Rey
- CEA/Cadarache, DSV, DEVM, Laboratoire d'Ecophysiologie de la Photosynthèse, 13108 Saint-Paul-lez-Durance Cedex, France
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Mateo P, Stepanov V, Gillet B, Beloeil JC, Hoerter JA. Cardiac performance and creatine kinase flux during inhibition of ATP synthesis in the perfused rat heart. Am J Physiol 1999; 277:H308-17. [PMID: 10409210 DOI: 10.1152/ajpheart.1999.277.1.h308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To study the relation among mitochondrial energy supply, cardiac performance, and energy transfer through creatine kinase (CK), two acute models of inhibition of ATP synthesis were compared in the isovolumic acetate-perfused rat heart. Similar impairments of mechanical performance (rate-pressure product, RPP) were achieved by various stepwise decreases in O(2) supply (PO(2) down to 20% of control) or by infusing CN (0.15-0.25 mM). The forward CK flux measured by saturation-transfer (31)P NMR spectroscopy was 6.1 +/- 0. 4 mM/s in control hearts. Only after severe hypoxia (PO(2) < 40% of control) did CK flux drop (to 1.9 +/- 0.2 mM/s at PO(2) = 25% of control) together with impaired systolic activity and a rise in end-diastolic pressure. In contrast, in mild hypoxia CK flux remained constant and similar to control (5.3 +/- 0.5 mM/s, not significant) despite a twofold reduction in systolic activity. Similarly in all CN groups, constant CK flux was maintained for a threefold reduction in RPP, showing the absence of a relation between cardiac performance and global NMR-measured CK flux during mild ATP synthesis inhibition.
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Affiliation(s)
- P Mateo
- Unité 446, Institut National de la Santé et de la Recherche Médicale, Cardiologie Cellulaire et Moléculaire, Université Paris-Sud, 92296 Chatenay Malabry, France
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Soyer-Gobillard MO, Gillet B, Géraud ML, Bhaud Y. Dinoflagellate chromosome behaviour during stages of replication. Int Microbiol 1999; 2:93-102. [PMID: 10943399] [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: 02/17/2023]
Abstract
In most dinoflagellate species, chromosomes are characterized by an almost continuous condensation of the nucleofilaments throughout the cell cycle and the absence of longitudinal differentiation as Q, G, or C banding. Their supercoiled architecture is maintained by divalent cations and structural RNAs. Their chromatin is devoid of histones and nucleosomes and their DNA composition is distinctive: in several species, more than 60% of thymines are replaced by a rare base, hydroxymethyluracil. We report here an immunofluorescence (conventional and confocal laser scanning microscopy, CLSM) and immunogold transmission electron microscopy (TEM) analysis of some stages of the early replication process in Prorocentrum micans dinoflagellate cells, after long pulse incorporation (3, 6 or 9 days) with 50 micrograms/ml bromodeoxyuridine (BrdU) in the presence of 5-fluoro-2'-deoxyuridine (FUdR) and BrdU antibody technique (BAT) detection. The large DNA content (45 pg per nucleus) of P. micans cells is compacted on 100 chromosomes, 10 microns in length. In early S-phase, DNA replication sites are revealed as fluorescent domains organized in clusters, which appear in the periphery of the nucleus unlike other eukaryotes. In late S-phase, the number of labelled clusters increased; helically distributed, they did not appear synchronously in the whole chromosome. Under TEM, spherical domains of equivalent diameter appeared located all along the chromosomes after 6 days BrdU pulse. Replication occurs, but in our experimental conditions, segregation of daughter chromosomes was never observed. The blockade of the cell cycle after BrdU incorporation intervening just before the segregation of daughter chromosomes is discussed.
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Affiliation(s)
- M O Soyer-Gobillard
- Observatoire Océanologique de Banyuls, Laboratoire Arago, Université Paris 6, Banyuls-sur-mer, France.
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Gillet B, Beyly A, Peltier G, Rey P. Molecular characterization of CDSP 34, a chloroplastic protein induced by water deficit in Solanum tuberosum L. plants, and regulation of CDSP 34 expression by ABA and high illumination. Plant J 1998; 16:257-262. [PMID: 9839468 DOI: 10.1046/j.1365-313x.1998.00292.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We previously described the accumulation of a 34 kDa thylakoid protein, named CDSP 34 for chloroplastic drought-induced stress protein, in Solanum tuberosum plants subjected to water deficit. A full-length CDSP 34 cDNA has been isolated and we report here that mature CDSP 34 is highly similar to two chromoplastic proteins, fibrillin from Capsicum annuum and CHRC (for chromoplast protein C) from Cucumis sativus, components of carotenoid-accumulating structures. Northern and Western analyses showed that both CDSP 34 transcript and protein accumulated from early stages of water deficit. In water-stressed tomato plants, similar increases in the CDSP 34-related transcript amount were noticed in wild-type and ABA-deficient flacca mutant, but protein accumulation was observed only in wild-type, suggesting a posttranscriptional role of ABA in CDSP 34 synthesis regulation. Substantial increases in CDSP 34 transcript and protein abundances were also observed in potato plants subjected to high illumination. The CDSP 34 protein is proposed to play a structural role in stabilizing stromal lamellae thylakoids upon osmotic or oxidative stress.
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Affiliation(s)
- B Gillet
- CEA/Cadarache, DSV, Département d'Ecophysiologie Végétale et de Microbiologie, Saint-Paul-lez-Durance, France
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Ducrocq C, Dendane M, Laprévote O, Serani L, Das BC, Bouchemal-Chibani N, Doan BT, Gillet B, Karim A, Carayon A, Payen D. Chemical modifications of the vasoconstrictor peptide angiotensin II by nitrogen oxides (NO, HNO2, HOONO)--evaluation by mass spectrometry. Eur J Biochem 1998; 253:146-53. [PMID: 9578472 DOI: 10.1046/j.1432-1327.1998.2530146.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nitric oxide (NO) and angiotensin II are natural regulators of blood pressure. Under aerobic conditions, NO is transformed into its higher oxides (N2O4, NO2, NO/NO2 or N2O3) and oxoperoxonitrate (currently named peroxynitrite) by coupling with superoxide. Previous studies have shown that these reactive nitrogen species should be involved in vivo in the transformation of cysteine and tyrosine into the corresponding nitrosothiol and 3-nitrotyrosine. In the present study, attention has been focused on the relative reactivities of HNO2, peroxynitrite, and NO in the presence of dioxygen, towards the arginine and tyrosine residues of the peptide angiotensin II. Nitration of the tyrosine residue is clearly the main reaction with peroxynitrite. By contrast, besides 20% of nitration of the tyrosine residue, NO in the presence of dioxygen leads to nitrosation reactions with the arginine residue similar to those observed with HNO2 at pH 5, possibly through the intermediate N2O3 reactive species. Angiotensin II is converted for the most part to peptides having lost either a terminal amine function or the whole guanido group, leading respectively to citrulline-containing angiotensin II or to a diene derivative. Identification established mainly by tandem mass spectrometry of peptidic by-products allows us to propose a cascade of nitrosations of all the amine functions of the arginine residue. Further in vivo studies show that transformations of the arginine residue in angiotensin II do not alter its vasoconstrictive properties, whereas nitration of the tyrosine residue totally inhibits them.
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Affiliation(s)
- C Ducrocq
- Institut de Chimie des Substances Naturelles, CNRS, Gif-sur-Yvette, France.
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Abstract
Muscle degeneration and regeneration were studied by 2D 1H magnetic resonance spectroscopy (MRS) and histological examination, in an experimental model of muscle injury using a myotoxic snake venom, notexin. The injured muscles produced a very specific MRS signal, corresponding to a tri-unsaturated fatty acid (linolenic acid-like) signal, from day 2 to day 9 after injury. The combination of MRS with histology showed that this signal was associated with a mechanism occurring during myoblast fusion to form myotubes. 2D 1H MRS is thus a useful non-invasive tool for detecting muscle regeneration in vivo.
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Stepanov V, Mateo P, Gillet B, Beloeil JC, Lechene P, Hoerter JA. Kinetics of creatine kinase in an experimental model of low phosphocreatine and ATP in the normoxic heart. Am J Physiol 1997; 273:C1397-408. [PMID: 9357786 DOI: 10.1152/ajpcell.1997.273.4.c1397] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
To study the dependence of the forward flux of creatine kinase (CK) on its substrates and products we designed an acute normoxic model of steady-state depletion of phosphocreatine (PCr) and adenylate in the isovolumic acetate-perfused rat heart. Various concentrations of PCr and ATP were induced by prior perfusion with 2 deoxy-D-glucose in the presence of insulin. The apparent rate constant (k(f)) and the forward CK flux were measured under metabolic and contractile steady state by progressive saturation-transfer 31P nuclear magnetic resonance (NMR). At high adenylate content CK flux was constant for a twofold reduction in PCr concentration ([PCr]); CK flux was 6.3 +/- 0.6 mM/s (vs. 6.5 +/- 0.2 mM/s in control) because of a doubling of k(f). Although, at the lowest ATP concentration and [PCr], CK flux was reduced by 50%, it nevertheless always remained higher than ATP synthesis estimated by parallel oxygen consumption measurement. NMR-measured flux was compared with the flux computed under the hypothesis of CK equilibrium. CK flux could not be fully predicted by the concentrations of CK metabolites. This is discussed in terms of metabolite and CK isozyme compartmentation.
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Affiliation(s)
- V Stepanov
- U-446, Institut National de la Santé et de la Recherche Médicale, Cardiologie Cellulaire et Moléculaire, Université Paris-Sud, Chatenay Malabry, France
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Bleneau S, Gillet B, Verre-Sebrie C, Beloeil JC. Appearance of lipidic signals in "stressed" cells: study of myogenic cultured cells by two-dimensional nuclear magnetic resonance. Cell Mol Biol (Noisy-le-grand) 1997; 43:711-9. [PMID: 9298593] [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: 02/05/2023]
Abstract
The proton NMR spectra of regenerating muscle shoe high resolution fatty acid signals as the spectra of other stressed cells such as ischemic cardiac cells, stimulated immune cells or malignant cells. We report here the in vitro study, by 2D 1H NMR, of the fusion of myogenic cells. High resolution fatty acid signals are only detected during cell fusion, demonstrating a higher mobility of the acyl chains.
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Affiliation(s)
- S Bleneau
- Laboratoire de RMN Biologique, ICSN, CNRS, Gif sur Yvette, France
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38
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Brulatout S, Méric P, Loubinoux I, Borredon J, Corrèze JL, Roucher P, Gillet B, Bérenger G, Beloeil JC, Tiffon B, Mispelter J, Seylaz J. A one-dimensional (proton and phosphorus) and two-dimensional (proton) in vivo NMR spectroscopic study of reversible global cerebral ischemia. J Neurochem 1996; 66:2491-9. [PMID: 8632174 DOI: 10.1046/j.1471-4159.1996.66062491.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [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: 02/01/2023]
Abstract
The suitability of two-dimensional (2D) proton spectroscopy for monitoring, in vivo, the changes in levels of brain metabolites induced by cerebral ischemia was investigated in an experimental model of 30-min reversible ischemia induced by four-vessel occlusion in the rat. The resulting data were compared with those obtained by one-dimensional (1D) proton and phosphorus spectroscopy. Phosphorus spectra obtained during ischemia showed significant drops in levels of phosphocreatine (-73%), beta-ATP (-60%), and intracellular pH (to 6.30) and an increase in inorganic phosphate level (905%). 1D and 2D proton spectra showed decreases in the N-acetylaspartate/creatine-phosphocreatine ratio that were not significantly different [-21% (1D) and -32% (2D)]. Similarly, the increases in lactate/creatine-phosphocreatine ratio were not significantly different [2,546% (1D) and 3,020% (2D)]. 2D spectroscopy also indicated a decrease in aspartate (-66%) and an increase in the inositol-choline derivative (+124%) pools during ischemia and an increase in alanine pool (+516%) during reperfusion. The glutamate-glutamine pool and taurine content did not change significantly during ischemia but decreased during reperfusion. The glucose level transiently decreased (-67%) during ischemia and increased immediately after (+261%). The levels of all the metabolites investigated returned to control values within 175 min after ischemia. 2D spectroscopy seems to be a reliable method of monitoring the changes in levels of cerebral compounds known to be involved in ischemia.
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Affiliation(s)
- S Brulatout
- Laboratoire de Recherches Cérébrovasculaires, CNRS URA 641, Université Paris VII, France
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Piérard C, Champagnat J, Denavit-Saubie M, Gillet B, Beloeil JC, Guezennec CY, Barrère B, Pérès M. Brain stem energy metabolism response to acute hypoxia in anaesthetized rats: a 31P NMR study. Neuroreport 1995; 7:281-5. [PMID: 8742470] [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: 02/01/2023]
Abstract
Mammals react to acute hypoxia with an initial augmentation and a secondary depression of the respiratory rhythm generated by brain stem neuronal networks. To investigate the cytosolic level of energy rich phosphorus metabolites during these responses, we developed 31P nuclear magnetic resonance spectroscopy of the brain stem. Moderate hypoxia (paO2 = 40 mmHg, 2 min) caused a reversible 62 +/- 15% respiratory rhythm depression and decreased cytosolic phosphocreatine levels by 43 +/- 11% (p < 0.01, n = 7) without affecting adenosine triphosphate levels. Cellular metabolic depletion therefore contributes to the brain stem response to hypoxia, and appears to reflect adaptive mechanisms to limited oxygen availability in the brain stem.
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Affiliation(s)
- C Piérard
- Institut de Médecine Aérospatiale, Base d'Essais de Brétigny, Bretigny-sur-Orge, France
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Piérard C, Champagnat J, Denavit-Saubie M, Gillet B, Beloeil JC, Guezennec CY, Barrère B, Pérès M. Brain stem energy metabolism response to acute hypoxia in anaesthetized rats. Neuroreport 1995. [DOI: 10.1097/00001756-199512000-00067] [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: 11/25/2022]
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Abstract
This report describes the first 1H-1H phased spectrum obtained in vivo from the hind-leg muscles of an intact mouse. TOCSY correlations can follow the complete spin system and give a more detailed graph of each molecule than can COSY. TOCSY is also better suited than COSY for studying long fatty-acid chains. All the peaks are in phase in a TOCSY experiment and the intensities of the cross-correlation peaks are less sensitive to low digitalization in the t1 domain than are those of COSY. The improvement in sensitivity was estimated by measuring the volumes of the cross-correlation peaks in COSY and TOCSY spectra.
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Affiliation(s)
- B Gillet
- Laboratoire de RMN biologique, ICSN-CNRS, Gif Sur Yvette, France
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Abstract
Itaconate biosynthesis was studied in intact cells of high-yield (RC4') and low-yield (CM85J) strains of the fungus Aspergillus terreus by methods (tracers, nuclear magnetic resonance spectroscopy, and mass spectroscopy) that did not interfere with metabolism. Itaconate formation in RC4' required de novo protein biosynthesis. Krebs cycle intermediates increased in both strains during the production of itaconic acid. The Embden-Meyerhof-Parnas pathway and the Krebs cycle were shown to be involved in this biosynthesis by using 14C- and 13C-labelled substrates and nuclear magnetic resonance spectroscopy. A metabolic pathway for itaconate formation from glucose in A. terreus is proposed.
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Affiliation(s)
- P Bonnarme
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, Gif sur Yvette, France
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43
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Loubinoux I, Meric P, Borredon J, Correze JL, Gillet B, Beloeil JC, Tiffon B, Mispelter J, Lhoste JM, Jacques S. Cerebral metabolic changes induced by MK-801: a 1D (phosphorus and proton) and 2D (proton) in vivo NMR spectroscopy study. Brain Res 1994; 643:115-24. [PMID: 8032909 DOI: 10.1016/0006-8993(94)90016-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [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: 01/28/2023]
Abstract
The dynamic effects of the non-competitive NMDA receptor antagonist, MK-801 on brain metabolism were investigated over 105 minutes in unanesthetized rats by proton and phosphorus NMR spectroscopy. MK-801 (0.5 and 5 mg/kg, i.p) induced no changes in intracellular pH, and in phosphocreatine, ATP, and inorganic phosphate levels, indicating that the drug preserved energy and intracellular pH homeostasis. There were transient increases in lactate after both doses of MK-801, suggesting early activation of glycolysis, which was not immediately matched by enhanced oxidative metabolism or by enhanced blood flow. Thereafter, lactate control level was not restored after 0.5 mg/kg whereas it was restored after 5 mg/kg in spite of a sustained metabolic activation. The low dose of MK-801 also caused a continuous decrease in cerebral aspartate level (-38%) which is thought to match the enhanced energy demand, whereas the high dose caused shorter and smaller changes. The intracerebral glucose level rose after MK-801 injection, indicating that brain tissue had an adequate or even excessive supply of glucose. Glucose time course seemed to closely match the changes in blood flow elicited by MK-801. This is the first study giving the metabolic pattern of a pharmacological activation. We demonstrate an excess of glycolysis over oxidative metabolism in the early time similar to that following physiological and pathophysiological states such as photic stimulation and seizures. The difference between the effects of the two doses of MK-801 suggests that the adjustment of cerebral metabolism to MK-801 activation is faster and greater with the high dose than with the low dose.
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Affiliation(s)
- I Loubinoux
- Laboratoire de Recherches Cérébrovasculaires, CNRS UA 641, Centre Universitaire Villemin, Université Paris VII, France
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Meric P, Barrere B, Peres M, Gillet B, Berenger G, Beloeil JC, Seylaz J. Effects of kainate-induced seizures on cerebral metabolism: a combined 1H and 31P NMR study in rat. Brain Res 1994; 638:53-60. [PMID: 8199876 DOI: 10.1016/0006-8993(94)90632-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [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: 01/29/2023]
Abstract
The cerebral metabolic changes elicited by kainate-induced seizures in the rat were investigated by in vivo combined NMR spectroscopy of 31P and 1H. Systemic injection of kainate induced no significant changes in cerebral ATP or PCr levels during up to 90 min of continuous, generalised seizures, and the cerebral 31P spectra showed only a transient mild cerebral acidosis 30 min after kainate administration. In parallel with the changes in intracellular cerebral pH, the 1H spectra showed a significant increase in lactate, which remained elevated throughout the seizures. These findings indicate that oxidative metabolism does not completely match the increased glycolysis during seizures though the energy homeostasis is maintained. This suggests that oxidative metabolism has a limited capacity to satisfy the brain's energy needs during the kainate-induced seizures, but that the different pathways of energy production in the brain cells can overcome this limitation. Thus the brain damage associated with this experimental model of epilepsy is not due to extended major failure of the energy supply.
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Affiliation(s)
- P Meric
- Laboratoire de Recherches Cérébrovasculaires, CNRS UA 641, Centre Universitaire Villemin, Paris, France
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45
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Gillet B, Doan BT, Verre-Serrie C, Barbere B, Berenger G, Morin S, Koenig J, Peres M, Sebille A, Beloeil JC. In vivo 2D 1H NMR of mdx mouse muscle and myoblast cells during fusion: evidence for a characteristic signal of long chain fatty acids. Neuromuscul Disord 1993; 3:433-8. [PMID: 8186688 DOI: 10.1016/0960-8966(93)90091-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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: 01/29/2023]
Abstract
We have previously demonstrated that 2D 1H NMR is suitable for studying cerebral metabolism. The same technique was used to study the hind leg muscle of normal (C57BL10) and dystrophic (mdx) mice. The results were compared to preliminary results for cultured muscle cells to determine the origin of fatty acid signals.
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Affiliation(s)
- B Gillet
- Laboratoire de RMN Biologique, ICSN-CNRS, Gif-sur-Yvette, France
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46
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Beloeil JC, Gillet B, Fedeli O, Berenger G, Lombardi V, Marzullo F, Scozzafava A. Application of 2D 1H NMR spectroscopy to the study of the brain, spinal cord, and sciatic nerve. Mol Chem Neuropathol 1993; 19:1-13. [PMID: 8363700 DOI: 10.1007/bf03160164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Homonuclear 1H 2D NMR spectroscopy (COSY experiments at 400 and 600 MHz) were used to study the rat brain in vivo and the rabbit spinal cord and sciatic nerve in vitro. The following metabolites were identified: lactate, alanine, threonine, GABA, glutamine/glutamate, N-acetyl aspartate, aspartate, taurine, inositol derivatives, choline derivatives, and glucose. The sciatic nerve spectra showed characteristic COSY graphs of saturated and unsaturated fatty acids, and linoleic and linolenic type structures were identified.
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Peres M, Fedeli O, Barrere B, Gillet B, Berenger G, Seylaz J, Beloeil JC. in vivo identification and monitoring of changes in rat brain glucose by two-dimensional shift-correlated1h nmr spectroscopy. Magn Reson Med 1992; 27:356-61. [PMID: 1361021 DOI: 10.1002/mrm.1910270216] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [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: 11/11/2022]
Abstract
Intracerebral glucose resonance was directly detected and resolved in vivo by two-dimensional shift-correlated (COSY) 1H NMR spectroscopy in anesthetized rats (n = 4). The relative changes in brain glucose concentration were measured by volume integration of the alpha-D-glucose cross peak in the 2D COSY spectra. This report demonstrates the possibility of monitoring the variations in cerebral glucose following iv injection of glucose.
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Affiliation(s)
- M Peres
- Institut de Chimie des Substances Naturelles C.N.R.S., Gif sur Yvette, France
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48
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Abstract
2D COSY 1H NMR with surface coil has been used to resolve and assign cerebral metabolites which had previously been detected but could not be resolved or assigned in situ in the living animal by conventional 1D 1H NMR. A wide range of cerebral metabolites, including alanine, N-acetyl aspartate, aspartate, choline derivatives, creatine/phosphocreatine pool, GABA, glucose, glutamate/glutamine pool, inositol, lactate and taurine were simultaneously resolved and assigned in situ in the whole animal using the 2D COSY correlation graphs. Global irreversible ischemia caused the appearance and the disappearance of cross-peaks in the 2D COSY 1H NMR map, corresponding to increases in alanine, GABA and lactate and glucose depletion.
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Affiliation(s)
- B Barrère
- Laboratoire de Physiologie et Physiopathologie Cérébrovasculaire, INSERM U 182 CNRS UA641, Université Paris VII, France
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49
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Jacquin T, Gillet B, Fortin G, Pasquier C, Béloeil JC, Champagnat J. Metabolic action of N-methyl-D-aspartate in newborn rat brain ex vivo: 31p magnetic resonance spectroscopy. Brain Res 1989; 497:296-304. [PMID: 2684343 DOI: 10.1016/0006-8993(89)90275-8] [Citation(s) in RCA: 11] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
N-methyl-D-aspartate (NMDA) is an agonist used to identify neuronal receptive sites for dicarboxylic amino acid neurotransmitters; NMDA receptors are implicated in neuronal damage of ischemic or hypoglycemic origin in newborns although involved mechanisms remain to be identified. In the present study, 31P magnetic resonance spectroscopy with fast (6/min) data acquisition was used in newborn rat brain slices to measure changes of intracellular phosphocreatine and nucleotide triphosphate levels following extracellular NMDA applications. The rapid exhaustion of phosphocreatine stores in 50% of the total population of brain cells was induced in all cases by application of NMDA (30-45 s, 25-100 mM). It was not reproduced by other excitatory agents: potassium ions (24.6 mM, 4 min), isobutylxanthine (1mM), muscarine (10 mM), serotonin (0.1 mM) or substance P (10 microM). Such an effect of NMDA was not modified after tetrodotoxin (1 microM) and was reduced by extracellular 2-amino-5-phosphonovalerate (50 microM) or magnesium ions (2.2 mM). However it did develop during NMDA-induce neuronal excitations and was reversible within 10-30 min. This action of NMDA was followed by an irreversible decrease of phosphorus metabolites if mitochondrial creatine kinase and adenosine triphosphatase were decoupled by atractyloside (50 microM). Experiments revealed a link between selective NMDA action at neuronal plasma membranes, neurotoxicity and energy production by mitochondria.
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Affiliation(s)
- T Jacquin
- Laboratoire de Physiologie Nerveuse C.N.R.S., Gif-sur-Yvette France
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50
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Gillet B, Mergui S, Beloeil JC, Champagnat J, Fortin G, Jacquin T. 1H COSY spectra of superfused brain slices of rat: ex vivo direct assignment of resonances. Magn Reson Med 1989; 11:288-94. [PMID: 2779418 DOI: 10.1002/mrm.1910110303] [Citation(s) in RCA: 17] [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] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Realization of 1D 1H spectra of superfused brain slices of rats is described. Two-dimensional 1H-1H COSY spectra have been used for the direct assignment of resonances on living tissue (lactate, GABA, N-acetyl aspartate, aspartate, glutamine/glutamate, creatine/phosphocreatine, taurine, inositol, choline/ethanolamine). Utilization of the SUPERCOSY sequence permits simultaneously the enhancement of off-diagonal signals for small metabolites and the reduction of the signals for water and macromolecules.
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Affiliation(s)
- B Gillet
- Institut de Chimie des Substances Naturelles, CNRS, Gif sur Yvette, France
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