76
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Schneider P, Piper S, Schmitz C, Schreiter N, Volkwein N, Lüdemann L, Malzahn U, Poellinger A. Fast 3D Near-Infrared Breast Imaging Using Indocyanine Green for Detection and Characterization of Breast Lesions. ROFO-FORTSCHR RONTG 2011; 183:956-63. [PMID: 21972043 DOI: 10.1055/s-0031-1281726] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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77
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Barlaam F, Fortin C, Vaugoyeau M, Schmitz C, Assaiante C. Représentation de l’action et anticipation : apprentissage d’une nouvelle coordination posture-mouvement au cours de l’adolescence. Neurophysiol Clin 2011. [DOI: 10.1016/j.neucli.2011.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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78
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Chabeauti PY, Vaugoyeau M, Anton JL, Schmitz C, Assaiante C. Perception du Mouvement Humain (MH) réalisé en microgravité : une étude en IRM fonctionnelle. Neurophysiol Clin 2011. [DOI: 10.1016/j.neucli.2011.10.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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79
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Schira J, Gasis M, Estrada V, Hendricks M, Schmitz C, Trapp T, Kruse F, Kögler G, Wernet P, Hartung HP, Müller HW. Significant clinical, neuropathological and behavioural recovery from acute spinal cord trauma by transplantation of a well-defined somatic stem cell from human umbilical cord blood. ACTA ACUST UNITED AC 2011; 135:431-46. [PMID: 21903726 DOI: 10.1093/brain/awr222] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Stem cell therapy is a potential treatment for spinal cord injury and different stem cell types have been grafted into animal models and humans suffering from spinal trauma. Due to inconsistent results, it is still an important and clinically relevant question which stem cell type will prove to be therapeutically effective. Thus far, stem cells of human sources grafted into spinal cord mostly included barely defined heterogeneous mesenchymal stem cell populations derived from bone marrow or umbilical cord blood. Here, we have transplanted a well-defined unrestricted somatic stem cell isolated from human umbilical cord blood into an acute traumatic spinal cord injury of adult immune suppressed rat. Grafting of unrestricted somatic stem cells into the vicinity of a dorsal hemisection injury at thoracic level eight resulted in hepatocyte growth factor-directed migration and accumulation within the lesion area, reduction in lesion size and augmented tissue sparing, enhanced axon regrowth and significant functional locomotor improvement as revealed by three behavioural tasks (open field Basso-Beattie-Bresnahan locomotor score, horizontal ladder walking test and CatWalk gait analysis). To accomplish the beneficial effects, neither neural differentiation nor long-lasting persistence of the grafted human stem cells appears to be required. The secretion of neurite outgrowth-promoting factors in vitro further suggests a paracrine function of unrestricted somatic stem cells in spinal cord injury. Given the highly supportive functional characteristics in spinal cord injury, production in virtually unlimited quantities at GMP grade and lack of ethical concerns, unrestricted somatic stem cells appear to be a highly suitable human stem cell source for clinical application in central nervous system injuries.
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80
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Moresco T, Genro V, Schmitz C, Souza C, Cunha-Filho J. Metformin alone or combined with clomiphene citrate in women with polycystic ovary syndrome and infertility: systematic review. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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81
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Souza C, Schmitz C, Genro V, Martins A, Oppermann M, Cunha-Filho J. Outpatient hysteroscopy in recurrent miscarriage. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.1084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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82
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Schmitz C, de Conto E, Matte U, Genro V, Souza C, Cunha-Filho J. Luteinizing hormone polymorphisms cannot explicate endometriosis associated infertility. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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83
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Bauner KU, Sourbron S, Picciolo M, Schmitz C, Theisen D, Sandner TA, Reiser MF, Huber AM. MR first pass perfusion of benign and malignant cardiac tumours—significant differences and diagnostic accuracy. Eur Radiol 2011; 22:73-82. [DOI: 10.1007/s00330-011-2245-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 08/08/2011] [Accepted: 08/10/2011] [Indexed: 10/17/2022]
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84
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Jaerve A, Schiwy N, Schmitz C, Mueller HW. Differential effect of aging on axon sprouting and regenerative growth in spinal cord injury. Exp Neurol 2011; 231:284-94. [PMID: 21806987 DOI: 10.1016/j.expneurol.2011.07.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 07/08/2011] [Accepted: 07/14/2011] [Indexed: 12/22/2022]
Abstract
The demographics of acute spinal cord injury (SCI) are changing with an increased incidence in older age. However, the influence of aging on the regenerative growth potential of central nervous system (CNS) axons following SCI is not known. We investigated axonal sprouting along with the efficiency of the infusion of the stromal cell-derived growth factor-1 (SDF-1/CXCL12) and regenerative growth along with the anti-scarring treatment (AST) in young (2-3 months) and geriatric (22-28 months) female rats following SCI. AST included local injection of iron chelator (2,2'-dipyridine-5,5'-dicarboxylic acid) and 8-bromo-cyclic adenosine monophosphate solution into the lesion core. Axon outgrowth was investigated by immunohistological methods at 5 weeks after a partial dorsal hemisection at thoracic level T8. We found that aging significantly reduces spontaneous axon sprouting of corticospinal (CST), serotonergic (5-HT) raphespinal and catecholaminergic (TH) coerulospinal tracts in distinct regions of the spinal cord rostral to the lesion. However, impairment of axon sprouting could be markedly attenuated in geriatric animals by local infusion of SDF-1. Unexpectedly and in contrast to rostral sprouting, aging does not diminish the regenerative growth capacity of 5-HT-, TH- and calcitonin gene-related peptide (CGRP)-immunoreactive axons at 5 weeks after SCI. Moreover, 5-HT and TH axons maintain the ability to react upon AST with significantly enhanced regeneration in aged animals. These data are the first to demonstrate, that old age compromises axonal plasticity, but not regenerative growth, after SCI in a fiber tract-specific manner. Furthermore, AST and SDF-1 infusions remain efficient, which implicates that therapy in elderly patients is still feasible.
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85
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Dohmen G, Schmitz C, Steinseifer U, Hatam N, Hilgers RD, Autschbach R, Spillner J. Influence of aortic dimensions on the hemodynamic performance of small aortic valve prostheses: impact on patient/prosthesis mismatch. Thorac Cardiovasc Surg 2011; 59:449-53. [PMID: 21544789 DOI: 10.1055/s-0030-1271012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Since Doppler echocardiography takes no account of pressure recovery, the true hemodynamic burden of aortic valve prostheses remains vague. The purpose of this study was to elucidate the methodological error of Doppler gradient estimation by means of a model demonstrating the different influence of aortic root diameters on net and Doppler gradients, respectively. This matters especially in small valves and the related patient/prosthesis mismatch calculation. METHODS Two bileaflet small aortic valve prostheses (19 mm SJM Regent® and On-X® valve) were tested using a pulsatile circulatory mock loop simulator with two different aortic models: one with statistically normal diameters according to annular size, another one simulating an aortic aneurysm of 50 mm. Doppler and simultaneously recorded net gradients as well as systolic energy losses were obtained for different hemodynamic conditions. RESULTS In all measurements a significant amount of pressure recovery was observed. In cases of aortic aneurysm systolic energy loss increased significantly for each cardiac output at each heart rate ( P < 0.0028), reflected by a significant ( P < 0.0001) increase in net gradients. The corresponding Doppler gradients were unchanged. This indicates significantly less pressure recovery ( P < 0.0001) in the aneurysmatic aorta. CONCLUSIONS Geometry of the ascending aorta considerably alters aortic valve hemodynamic parameters. The hemodynamic function of small aortic valve prostheses, especially with corresponding normal outflow dimensions, is much better than expected from Doppler gradients. Thus, calculation of a patient/prosthesis mismatch can be misleading.
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86
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Jungmann E, Bolle J, Schmitz C, Jungmann G. Metformin bei Typ-2-Diabetes mellitus: Vitamin B12-Mangel und diabetische Polyneuropathie in der täglichen Praxis. DIABETOL STOFFWECHS 2011. [DOI: 10.1055/s-0031-1277433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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87
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Chouliaras L, van den Hove DLA, Kenis G, Dela Cruz J, Lemmens MAM, van Os J, Steinbusch HWM, Schmitz C, Rutten BPF. Caloric restriction attenuates age-related changes of DNA methyltransferase 3a in mouse hippocampus. Brain Behav Immun 2011; 25:616-23. [PMID: 21172419 DOI: 10.1016/j.bbi.2010.11.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 11/08/2010] [Accepted: 11/28/2010] [Indexed: 01/06/2023] Open
Abstract
Recent studies have suggested that DNA methylation is implicated in age-related changes in gene expression as well as in cognition. DNA methyltransferase 3a (Dnmt3a), which catalyzes DNA methylation, is essential for memory formation and underlying changes in neuronal and synaptic plasticity. Because caloric restriction (CR) and upregulation of antioxidants have been suggested as strategies to attenuate age-related alterations in the brain, we hypothesized that both a diet restricted in calories and transgenic overexpression of normal human Cu/Zn superoxide dismutase 1 (SOD) attenuate age-related changes in Dnmt3a in the aging mouse hippocampus. For this purpose, we performed qualitative and quantitative analyses of Dnmt3a-immunoreactivity (IR) for the hippocampal dentate gyrus (DG), CA3 and CA1-2 regions in 12- and 24-month-old mice from 4 groups, i.e. (1) wild-type (WT) mice on a control diet (WT-CD), (2) SOD-CD mice, (3) WT mice on CR (WT-CR), and (4) SOD-CR. Qualitative analyses revealed two types of Dnmt3a immunoreactive cells: type I cells--present throughout all hippocampal cell layers showing moderate levels of nuclear Dnmt3a-IR, and type II cells--a subpopulation of hippocampal cells showing very intense nuclear Dnmt3a-IR, and colocalization with Bromodeoxyuridine. Quantitative analyses indicated that the age-related increase in Dnmt3a-IR within the CA3 and CA1-2 in type I cells was attenuated by CR, but not by SOD overexpression. In contrast, the density of type II Dnmt3a immunoreactive cells showed an age-related reduction, without significant effects of both CR and SOD. These changes in Dnmt3a levels in the mouse hippocampus may have a significant impact on gene expression and associated cognitive functioning.
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88
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Bauer A, Postrach J, Abicht J, Thormann M, Blanck S, Kessler B, Sotlar K, Thein E, Schmitz C, Reichart B, Brenner P. 297 Preclinical Heterotopic Thoracic Cardiac Xenotransplantation. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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89
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Benz MR, Kozlik-Feldmann R, Stangl M, Schmitz C, Fehrenbach H, Büttner M, Dalla-Pozza R, Weber LT. Kombinierte Herz- und Nierentransplantation (HNTx) bei einem 6-jährigen Mädchen. KLINISCHE PADIATRIE 2011. [DOI: 10.1055/s-0031-1273856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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90
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Thalmann R, Merkel E, Akra B, Bombien R, Fano C, Dauner M, Kozlik-Feldmann R, Sodian R, Neagoie A, Aleksieva G, Neuss M, Reichart B, Schmitz C. Development of a large animal model for hybrid pulmonary valve implantation. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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91
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Neagoie A, Aleksieva G, Sodian R, Schiller W, Kozlik-Feldmann R, Netz H, Klinner W, Reichart B, Schmitz C. Results after repair of partial atrio-ventricular septal defects: A 50-year single-center experience. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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92
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Michel S, Bigdeli A, Wolf M, Schmauss D, Überfuhr P, Beiras-Fernandez A, Kur F, Schmitz C, Reichart B, Sodian R. Technique for right ventricular outflow tract (RVOT) cannulation for BVAD-implantation as a redo-procedure. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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93
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Bombien R, Marczynski-Bühlow M, Leester-Schädel M, Brinkmann R, Plonien K, Schmitz C, Cremer J, Reichart B, Lutter G. Transcatheter cardiac valve surgery: beating-heart laser resection of the pulmonary valve. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1268934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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94
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Thierfelder N, Akra B, Haas U, König F, Aleksieva G, Bombien R, Fano C, Dauner M, Schmitz C, Reichart B. Comparison of synthetic and natural scaffolds for application in aortic valve tissue engineering. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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95
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Dzemali O, Steinseifer U, Schmitz C, Häussler A, Moritz A, Genoni M, Kleine P. Total cardiac hemodynamics of mechanical and tissue valves in double valve replacement - an in vitro study. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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96
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Kowert A, Schramm R, Januszewska K, Schmitz C, Reichart B, Überfuhr P. Combined aortic and mitral ring enlargement in extreme patient-prosthesis mismatch. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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97
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Schmitz C, Sodian R, Breuer J, Kozlik-Feldmann R, Loeff M, Dalla Pozza R, Netz H, Abicht J, Reichart B. Long-term pediatric circulatory support as bridge to transplanation. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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98
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Brenner P, Liebermann A, Sodian R, Kaczmarek I, Schmoeckel M, Schmitz C, Reichart B, Überfuhr P. Retro-auricular Jarvik-2000 left ventricular assist device (LVAD) as a new ideal destination therapy if compared to the abdominal cable version as bridging therapy. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1268992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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99
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Bigdeli A, Sodian R, Schmitz C, Michel S, Sadoni S, Überfuhr P, Reichart B, Kaczmarek I. Bridging patients in cardiogenic shock with the Berlin Heart Excor biventricular assist device to heart transplantation - The Munich experience. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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100
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Wolf M, Sodian R, Boekstegers P, Kupatt C, Schramm R, Michel S, Abicht J, Primaychenko M, Reichart B, Schmitz C. First transaxillary aortic valve replacement in a heart transplant recipient. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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