51
|
Huynh T, Gagnon R, Mansour S, Rinfret S, Montigny M, Afilalo M, Kouz S, Lauzon C, Nguyen M, Eisenberg M, Harvey R, Dery J, L'Allier P, Schampaert E, Tardif J. LONG-TERM STATIN USE AND ADHERENCE IN PATIENTS WITH ST-SEGMENT ELEVATION MYOCARDIAL INFARCTION: INSIGHTS FROM THE AMI-QUÉBEC REGISTRY. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
52
|
Huynh T, Gagnon R, Iftikhar U, Rinfret S, Mansour S, Montigny M, Afilalo M, Kouz S, Lauzon C, Nguyen M, Harvey R, Eisenberg M, L'Allier P, Tardif J, Schampaert E. LONGTERM RECURRENT ISCHEMIC CARDIOVASCULAR EVENTS AMONG PATIENTS WITH ST-SEGMENT ELEVATION MYOCARDIAL INFARCTION: INSIGHTS FROM THE AMI-QUÉBEC REGISTRY. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
53
|
Der Sarkissian S, Cailhier JF, Borie M, Stevens LM, Gaboury L, Mansour S, Hamet P, Noiseux N. Celastrol protects ischaemic myocardium through a heat shock response with up-regulation of haeme oxygenase-1. Br J Pharmacol 2015; 171:5265-79. [PMID: 25041185 DOI: 10.1111/bph.12838] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 05/12/2014] [Accepted: 07/01/2014] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND PURPOSE Celastrol, a triterpene from plants, has been used in traditional oriental medicine to treat various diseases. Here, we investigated the cardioprotective effects of celastrol against ischaemia. EXPERIMENTAL APPROACH Protective pathways induced by celastrol were investigated in hypoxic cultures of H9c2 rat cardiomyoblasts and in a rat model of myocardial infarction, assessed with echocardiographic and histological analysis. KEY RESULTS In H9c2 cells, celastrol triggered reactive oxygen species (ROS) formation within minutes, induced nuclear translocation of the transcription factor heat shock factor 1 (HSF1) resulting in a heat shock response (HSR) leading to increased expression of heat shock proteins (HSPs). ROS scavenger N-acetylcysteine reduced expression of HSP70 and HSP32 (haeme oxygenase-1, HO-1). Celastrol improved H9c2 survival under hypoxic stress, and functional analysis revealed HSF1 and HO-1 as key effectors of the HSR, induced by celastrol, in promoting cytoprotection. In the rat ischaemic myocardium, celastrol treatment improved cardiac function and reduced adverse left ventricular remodelling at 14 days. Celastrol triggered expression of cardioprotective HO-1 and inhibited fibrosis and infarct size. In the peri-infarct area, celastrol reduced myofibroblast and macrophage infiltration, while attenuating up-regulation of TGF-β and collagen genes. CONCLUSIONS AND IMPLICATIONS Celastrol treatment induced an HSR through activation of HSF1 with up-regulation of HO-1 as the key effector, promoting cardiomyocyte survival, reduction of injury and adverse remodelling with preservation of cardiac function. Celastrol may represent a novel potent pharmacological cardioprotective agent mimicking ischaemic conditioning that could have a valuable impact in the treatment of myocardial infarction.
Collapse
|
54
|
Smeds H, Eastwood HT, Hampson AJ, Sale P, Campbell LJ, Arhatari BD, Mansour S, O'Leary SJ. Endolymphatic hydrops is prevalent in the first weeks following cochlear implantation. Hear Res 2015; 327:48-57. [PMID: 25987505 DOI: 10.1016/j.heares.2015.04.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 04/02/2015] [Accepted: 04/24/2015] [Indexed: 01/15/2023]
Abstract
AIM To explore morphological or electrophysiological evidence for the presence of endolymphatic hydrops (EH) in guinea pig cochleae in the first 3 months after cochlear implantation. METHODS Dummy silastic electrodes were implanted atraumatically into the basal turn of scala tympani via a cochleostomy. Round window electrocochleography (ECochG) was undertaken prior to and after implantation. Animals survived for 1, 7, 28 or 72 days prior to a terminal experiment, when ECochG was repeated. The cochleae were imaged using micro-CT after post-fixing with osmium tetroxide to reveal the inner ear soft tissue structure. EH was assessed by visual inspection at a series of frequency specific places along the length of the cochlea, and the extent to which Reissner's membrane departed from its neutral position was quantified. Tissue response volumes were calculated. Using ECochG, the ratio of the summating potential to the action potential (SP/AP ratio) was calculated in response to frequencies between 2 and 32 kHz. RESULTS There was minimal evidence of electrode trauma from cochlear implantation on micro-CT imaging. Tissue response volumes did not change over time. EH was most prevalent 7 days after surgery in implanted ears, as determined by visual inspection. Scala media areas were increased, as expected in cases of EH, over the first month after cochlear implantation. SP/AP ratios decreased immediately after surgery, but were elevated 1 and 7 days after implantation. CONCLUSIONS EH is prevalent in the first weeks after implant surgery, even in the absence of significant electrode insertion trauma.
Collapse
|
55
|
Fitzgerald TW, Gerety SS, Jones WD, van Kogelenberg M, King DA, McRae J, Morley KI, Parthiban V, Al-Turki S, Ambridge K, Barrett DM, Bayzetinova T, Clayton S, Coomber EL, Gribble S, Jones P, Krishnappa N, Mason LE, Middleton A, Miller R, Prigmore E, Rajan D, Sifrim A, Tivey AR, Ahmed M, Akawi N, Andrews R, Anjum U, Archer H, Armstrong R, Balasubramanian M, Banerjee R, Baralle D, Batstone P, Baty D, Bennett C, Berg J, Bernhard B, Bevan AP, Blair E, Blyth M, Bohanna D, Bourdon L, Bourn D, Brady A, Bragin E, Brewer C, Brueton L, Brunstrom K, Bumpstead SJ, Bunyan DJ, Burn J, Burton J, Canham N, Castle B, Chandler K, Clasper S, Clayton-Smith J, Cole T, Collins A, Collinson MN, Connell F, Cooper N, Cox H, Cresswell L, Cross G, Crow Y, D’Alessandro M, Dabir T, Davidson R, Davies S, Dean J, Deshpande C, Devlin G, Dixit A, Dominiczak A, Donnelly C, Donnelly D, Douglas A, Duncan A, Eason J, Edkins S, Ellard S, Ellis P, Elmslie F, Evans K, Everest S, Fendick T, Fisher R, Flinter F, Foulds N, Fryer A, Fu B, Gardiner C, Gaunt L, Ghali N, Gibbons R, Gomes Pereira SL, Goodship J, Goudie D, Gray E, Greene P, Greenhalgh L, Harrison L, Hawkins R, Hellens S, Henderson A, Hobson E, Holden S, Holder S, Hollingsworth G, Homfray T, Humphreys M, Hurst J, Ingram S, Irving M, Jarvis J, Jenkins L, Johnson D, Jones D, Jones E, Josifova D, Joss S, Kaemba B, Kazembe S, Kerr B, Kini U, Kinning E, Kirby G, Kirk C, Kivuva E, Kraus A, Kumar D, Lachlan K, Lam W, Lampe A, Langman C, Lees M, Lim D, Lowther G, Lynch SA, Magee A, Maher E, Mansour S, Marks K, Martin K, Maye U, McCann E, McConnell V, McEntagart M, McGowan R, McKay K, McKee S, McMullan DJ, McNerlan S, Mehta S, Metcalfe K, Miles E, Mohammed S, Montgomery T, Moore D, Morgan S, Morris A, Morton J, Mugalaasi H, Murday V, Nevitt L, Newbury-Ecob R, Norman A, O'Shea R, Ogilvie C, Park S, Parker MJ, Patel C, Paterson J, Payne S, Phipps J, Pilz DT, Porteous D, Pratt N, Prescott K, Price S, Pridham A, Procter A, Purnell H, Ragge N, Rankin J, Raymond L, Rice D, Robert L, Roberts E, Roberts G, Roberts J, Roberts P, Ross A, Rosser E, Saggar A, Samant S, Sandford R, Sarkar A, Schweiger S, Scott C, Scott R, Selby A, Seller A, Sequeira C, Shannon N, Sharif S, Shaw-Smith C, Shearing E, Shears D, Simonic I, Simpkin D, Singzon R, Skitt Z, Smith A, Smith B, Smith K, Smithson S, Sneddon L, Splitt M, Squires M, Stewart F, Stewart H, Suri M, Sutton V, Swaminathan GJ, Sweeney E, Tatton-Brown K, Taylor C, Taylor R, Tein M, Temple IK, Thomson J, Tolmie J, Torokwa A, Treacy B, Turner C, Turnpenny P, Tysoe C, Vandersteen A, Vasudevan P, Vogt J, Wakeling E, Walker D, Waters J, Weber A, Wellesley D, Whiteford M, Widaa S, Wilcox S, Williams D, Williams N, Woods G, Wragg C, Wright M, Yang F, Yau M, Carter NP, Parker M, Firth HV, FitzPatrick DR, Wright CF, Barrett JC, Hurles ME. Large-scale discovery of novel genetic causes of developmental disorders. Nature 2015; 519:223-8. [PMID: 25533962 PMCID: PMC5955210 DOI: 10.1038/nature14135] [Citation(s) in RCA: 780] [Impact Index Per Article: 86.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 12/04/2014] [Indexed: 12/23/2022]
Abstract
Despite three decades of successful, predominantly phenotype-driven discovery of the genetic causes of monogenic disorders, up to half of children with severe developmental disorders of probable genetic origin remain without a genetic diagnosis. Particularly challenging are those disorders rare enough to have eluded recognition as a discrete clinical entity, those with highly variable clinical manifestations, and those that are difficult to distinguish from other, very similar, disorders. Here we demonstrate the power of using an unbiased genotype-driven approach to identify subsets of patients with similar disorders. By studying 1,133 children with severe, undiagnosed developmental disorders, and their parents, using a combination of exome sequencing and array-based detection of chromosomal rearrangements, we discovered 12 novel genes associated with developmental disorders. These newly implicated genes increase by 10% (from 28% to 31%) the proportion of children that could be diagnosed. Clustering of missense mutations in six of these newly implicated genes suggests that normal development is being perturbed by an activating or dominant-negative mechanism. Our findings demonstrate the value of adopting a comprehensive strategy, both genome-wide and nationwide, to elucidate the underlying causes of rare genetic disorders.
Collapse
|
56
|
Mansour S, Rozenblat V, Fuller-Tyszkiewicz M, Paganini C, Treasure J, Krug I. Do Emotions Mediate the Relationship Between Eating Pathology and Autistic Traits? Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)30636-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
57
|
DerSarkissian S, Cailhier J, Borie M, Stevens L, Gaboury L, Mansour S, Noiseux N. CELASTROL PREVENTS ADVERSE CARDIAC REMODELING OF THE ISCHEMIC MYOCARDIUM. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
58
|
Vu M, DerSarkissian S, Stevens L, Mansour S, Borie M, Roy D, Noiseux N. PRECONDITIONING HUMAN STEM CELLS WITH OXYTOCIN TO OPTIMIZE CELL THERAPY FOR THE TREATMENT OF CARDIOVASCULAR DISEASE. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
59
|
El Khoury R, Naim C, Gobeil F, Kokis A, Noiseux N, Mansour S. ACUTE AND MID-TERM CLINICAL OUTCOMES OF THE EVEROLIMUS-ELUTING BIORESORBABLE VASCULAR SCAFFOLDS IN AN ALL-COMER COHORT. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
60
|
Huynh T, Tardif J, Segal E, Nguyen M, Dery J, Afilalo M, Mansour S, Montigny M, Harvey R, Kouz S, Eisenberg M, Lynch A, Whittom L, Vadeboncoeur A, Lauzon C, Schampaert E. KNOWLEDGE TRANSLATION TO REDUCE DELAYS OF PRIMARY PERCUTANEOUS CORONARY INTERVENTION IN PATIENTS IN QUÉBEC - INSIGHTS FROM THE AMI ON TIME STUDY. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
61
|
El Khoury R, Stevens L, Gobeil F, Matteau A, Mansour S. ACUTE AND MID TERM CLINICAL OUTCOMES IN OCTOGENERIANS REFERRED FOR PCI. REAL WOLD CANADIAN EXPERIENCE. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
|
62
|
Bastani A, Shaqiri B, Mansour S, Anderson W. Sepsis Screening Clinical Decision Rule: A Novel Tool to Identify Emergency Department Patients who are at High Risk for Developing Severe Sepsis/Septic Shock. Ann Emerg Med 2013. [DOI: 10.1016/j.annemergmed.2013.07.251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
63
|
Pichette M, Dutilleul A, Stevens L, Noiseux N, Gobeil F, Mansour S. Safety and Effectiveness of Dabigatran in Atrial Fibrillation in a Real-World Population. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
64
|
Youssef A, Stevens L, Noiseux N, Gobeil F, Mansour S. Is the Mean Platelet Volume a Marker of In-Hospital Cardiac Events in Patients Admitted With Acute Myocardial Infarction in the Current Era? Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
65
|
Der Sarkissian S, Cailhier J, Borie M, Mansour S, Hamet P, Stevens L, Noiseux N. Celastrol as a Novel Cardioprotective Drug. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
66
|
Pacheco C, Stevens L, Tournoux F, Marquis Gravel G, Noiseux N, Mansour S. Echocardiographic Predictors of Outcomes Following Aortic Valve Replacement for Severe Aortic Stenosis. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
67
|
Connell FC, Gordon K, Brice G, Keeley V, Jeffery S, Mortimer PS, Mansour S, Ostergaard P. The classification and diagnostic algorithm for primary lymphatic dysplasia: an update from 2010 to include molecular findings. Clin Genet 2013; 84:303-14. [PMID: 23621851 DOI: 10.1111/cge.12173] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Revised: 04/19/2013] [Accepted: 04/19/2013] [Indexed: 12/17/2022]
Abstract
Historically, primary lymphoedema was classified into just three categories depending on the age of onset of swelling; congenital, praecox and tarda. Developments in clinical phenotyping and identification of the genetic cause of some of these conditions have demonstrated that primary lymphoedema is highly heterogenous. In 2010, we introduced a new classification and diagnostic pathway as a clinical and research tool. This algorithm has been used to delineate specific primary lymphoedema phenotypes, facilitating the discovery of new causative genes. This article reviews the latest molecular findings and provides an updated version of the classification and diagnostic pathway based on this new knowledge.
Collapse
|
68
|
Mansour S, Tocheva A, Edwards M, Goulston L, Platten H, Parsons C, Edwards C, Cooper C, Gadola SD. OP0192 Early Treatment-Naive Rheumatoid Arthritis (RA) is Characterised by Qualitative Changes of the INKT Regulatory Cell Repertoire. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
69
|
Khan O, Mansour S, Irukulla S, Reddy K, Vasilikostas G, Wan A. Sleeve gastrectomy for gastric band failures – A prospective study. Int J Surg 2013; 11:407-9. [DOI: 10.1016/j.ijsu.2013.03.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 03/01/2013] [Accepted: 03/06/2013] [Indexed: 10/27/2022]
|
70
|
Mansour S. Re: prenatal diagnosis using combined quantitative fluorescent polymerase chain reaction and array comparative genomic hybridization analysis as a first-line test: results from over 1000 consecutive cases. F. Scott, K. Murphy, L. Carey, W. Greville, N. Mansfield, P. Barahona, R. Robertson and A. McLennan. Ultrasound Obstet Gynecol 2013; 41: 500-507. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2013; 41:489. [PMID: 23610035 DOI: 10.1002/uog.12446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
|
71
|
Brice G, Ostergaard P, Jeffery S, Gordon K, Mortimer PS, Mansour S. A novel mutation inGJA1causing oculodentodigital syndrome and primary lymphoedema in a three generation family. Clin Genet 2013; 84:378-81. [DOI: 10.1111/cge.12158] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 03/27/2013] [Accepted: 03/27/2013] [Indexed: 11/30/2022]
|
72
|
Gayed M, Leone F, Toescu V, Bruce I, Giles I, Teh LS, McHugh N, Edwards C, Akil M, Khamashta M, Gordon C, Parker B, Urowitz M, Gladman D, Lunt M, Bruce I, Redmond A, Alcacer-Pitarch B, Gray J, Denton C, Herrick A, Navarro-Coy N, Collier H, Loughrey L, Pavitt S, Siddle H, Wright J, Helliwell P, Emery P, Buch M, Abrol E, Pulido CG, Isenberg DA, Kia S, Patil P, Williams M, Adizie T, Christidis D, Gordon T, Borg FA, Jain S, Dasgupta B, Robson J, Doll H, Yew S, Flossmann O, Suppiah R, Harper L, Hoglund P, Jayne D, Mukhtyar C, Westman K, Luqmani R, Al-Mossawi MH, Ridley A, Wong I, Kollnberger S, Shaw J, Bowness P, Di Cicco M, Humby F, Kelly S, Ng N, Hands R, Dadoun S, Buckley C, McInnes IB, Taylor P, Bombardieri M, Pitzalis C, Mansour S, Tocheva A, Goulston L, Platten H, Edwards C, Cooper C, Gadola SD, Lugli E, Lundberg K, Bracke K, Brusselle G, Venables PJ, Sanchez-Blanco C, Cornish G, Burn G, Saini M, Brownlie R, Klavinskis L, Williams R, Thompson S, Svensson L, Zamoyska R, Cope A, Hong CF, Khan K, Alade R, Nihtyanova SI, Ong VH, Denton CP, Scott DL, Ibrahim F, Kelly C, Birrell F, Chakravarty K, Walker D, Maddison P, Kingsley G, Cohen C, Karaderi T, Appleton L, Keidel S, Pointon J, Ridley A, Bowness P, Wordsworth P, Williams MA, Heine PJ, McConkey C, Lord J, Dosanjh S, Williamson E, Adams J, Underwood M, Lamb SE. Oral Abstracts 1: Connective Tissue Disease * O1. Long-Term Outcomes of Children Born to Mothers with SLE. Rheumatology (Oxford) 2013. [DOI: 10.1093/rheumatology/ket199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
73
|
Hanson D, Murray PG, Coulson T, Sud A, Omokanye A, Stratta E, Sakhinia F, Bonshek C, Wilson LC, Wakeling E, Temtamy SA, Aglan M, Rosser EM, Mansour S, Carcavilla A, Nampoothiri S, Khan WI, Banerjee I, Chandler KE, Black GCM, Clayton PE. Mutations in CUL7, OBSL1 and CCDC8 in 3-M syndrome lead to disordered growth factor signalling. J Mol Endocrinol 2012; 49:267-75. [PMID: 23018678 DOI: 10.1530/jme-12-0034] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
3-M syndrome is a primordial growth disorder caused by mutations in CUL7, OBSL1 or CCDC8. 3-M patients typically have a modest response to GH treatment, but the mechanism is unknown. Our aim was to screen 13 clinically identified 3-M families for mutations, define the status of the GH-IGF axis in 3-M children and using fibroblast cell lines assess signalling responses to GH or IGF1. Eleven CUL7, three OBSL1 and one CCDC8 mutations in nine, three and one families respectively were identified, those with CUL7 mutations being significantly shorter than those with OBSL1 or CCDC8 mutations. The majority of 3-M patients tested had normal peak serum GH and normal/low IGF1. While the generation of IGF binding proteins by 3-M cells was dysregulated, activation of STAT5b and MAPK in response to GH was normal in CUL7(-/-) cells but reduced in OBSL1(-/-) and CCDC8(-/-) cells compared with controls. Activation of AKT to IGF1 was reduced in CUL7(-/-) and OBSL1(-/-) cells at 5 min post-stimulation but normal in CCDC8(-/-) cells. The prevalence of 3-M mutations was 69% CUL7, 23% OBSL1 and 8% CCDC8. The GH-IGF axis evaluation could reflect a degree of GH resistance and/or IGF1 resistance. This is consistent with the signalling data in which the CUL7(-/-) cells showed impaired IGF1 signalling, CCDC8(-/-) cells showed impaired GH signalling and the OBSL1(-/-) cells showed impairment in both pathways. Dysregulation of the GH-IGF-IGF binding protein axis is a feature of 3-M syndrome.
Collapse
|
74
|
Hinks TSC, Staples KJ, Smith C, Ward J, Mansour S, Monk P, Howarth PH, Virgin HW, Gadola S, Djukanovic R. S114 Adaptive and Innate-Like T Cell Phenotypes in Asthma in Relationship to Compartment and Severity. Thorax 2012. [DOI: 10.1136/thoraxjnl-2012-202678.119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
75
|
Potter B, Mansour S, Matteau A, Essiambre R, Montigny M, Savoie S, Gobeil J. 303 Safety Of Primary PCI in a Stand-Alone Catheterization Laboratory in Patients With Pre-Hospital STEMI Diagnosis. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|