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Barth M, Serre V, Hubert L, Chaabouni Y, Bahi-Buisson N, Cadoudal M, Rabier D, Tich SNT, Ribeiro M, Ricquier D, Munnich A, Bonneau D, de Lonlay P, Christa L. Kinetic analyses guide the therapeutic decision in a novel form of moderate aromatic Acid decarboxylase deficiency. JIMD Rep 2011; 3:25-32. [PMID: 23430870 DOI: 10.1007/8904_2011_43] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 04/29/2011] [Accepted: 05/02/2011] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Aromatic amino acid decarboxylase (AADC) deficiency is a rare autosomal recessive disorder resulting in a combined dopamine and serotonin deficiency. About 50% of the cases set in the neonatal period. Here, we report an atypical clinical presentation with moderate symptoms. PATIENT At 10months old, the patient presented paroxysmal eye movements without seizures, and feeding difficulties which were attributed to gastroesophageal reflux. She was investigated at the age of 7years, because of orofacial dyspraxia, hypomimie, axial hypotonia and focal segmental dystonia, bilateral ptosis, without evidence for cognitive impairment. RESULTS HVA [110nM; (reference value (rv): 202-596)] and HIAA (12nM; rv: 87-366) decreased, OMD (520nM; rv: 5-60) and 5-HTP (56nM; rv: 2-16) increased in CSF. We confirmed the diagnosis of AADC deficiency because the activity in plasma was low: 4pmol/min/ml; rv: 16-137. The kinetic analysis revealed a sixfold increase in the apparent affinity for L-dopa (4.26mM; control=0.71), but the V (max) was unchanged (37.5pmol dopamine/min/ml; control=39.1), suggesting a modification in the substrate binding-site. Molecular analysis revealed two heterozygous mutations in the DDC gene: c1040G > A; pR347Q already described, and a novel mutation c478C > T, pR160W. CONCLUSION (1) CSF neurotransmitters metabolites suggested a moderate AADC deficiency; (2) The initial velocity saturation curve for L-dopa displayed a cooperative ligand binding behavior, in keeping with the modifications of the three-dimensional structure, induced by the amino acid substitutions (3) The treatment combination of L-dopa with pyridoxine dramatically improved the quality of life, the fatigability, and the paroxysmal eye movements.
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Abstract
With the introduction of heart valve prostheses cardiac valvular disease has become much more accessible to therapeutic options. However, currently available prostheses display significant limitations, such as limited long-term durability (biological prostheses) and a long-term necessity for anticoagulation therapy. Hence, alternative prosthesis types have been extensively explored in recent years particularly aiming at the development of vital and regenerative prostheses by means of tissue engineering. In the scientific field, different competing concepts have been introduced, including biological or synthetic scaffolds which can be further enhanced by cellular or extracellular components to promote further in vivo development of the prosthesis after implantation. Nowadays, decellularized donor heart valves are among the most advanced prosthesis types experiencing growing clinical attention and widespread use.
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Lammert A, Bode H, Hammes HP, Birck R, Fatar M, Zohsel K, Braun J, Schmieder K, Diepers M, Schubert GA, Barth M, Thomé C, Seiz M. Neuro-Endocrine and Neuropsychological Outcome After Aneurysmal Subarachnoid Hemorrhage (asah): A Prospective Cohort Study. Exp Clin Endocrinol Diabetes 2010; 119:111-6. [DOI: 10.1055/s-0030-1262815] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Leuret O, Kuster A, Barth M, Journel H, Odent S, Gilbert-Dussardier B, De Parscau L, Labarthe F. CL144 - Intérêts du BH4 dans l’hyperphénylalaninémie avant 4 ans. Arch Pediatr 2010. [DOI: 10.1016/s0929-693x(10)70365-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Akhyari P, Kamiya H, Gwanmesia P, Barth M, Romeike B, Aubin H, Nietzsche S, Franke WW, Karck M, Lichtenberg A. Functional performance and structural maturation of decellularized allogenic aortic valves after subcoronary implantation in a pre-clinical sheep model. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Le Meur N, Holder-Espinasse M, Jaillard S, Goldenberg A, Joriot S, Amati-Bonneau P, Guichet A, Barth M, Charollais A, Journel H, Auvin S, Boucher C, Kerckaert JP, David V, Manouvrier-Hanu S, Saugier-Veber P, Frébourg T, Dubourg C, Andrieux J, Bonneau D. MEF2C haploinsufficiency caused by either microdeletion of the 5q14.3 region or mutation is responsible for severe mental retardation with stereotypic movements, epilepsy and/or cerebral malformations. J Med Genet 2009; 47:22-9. [PMID: 19592390 DOI: 10.1136/jmg.2009.069732] [Citation(s) in RCA: 205] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Over the last few years, array-comparative genomic hybridisation (CGH) has considerably improved our ability to detect cryptic unbalanced rearrangements in patients with syndromic mental retardation. METHOD Molecular karyotyping of six patients with syndromic mental retardation was carried out using whole-genome oligonucleotide array-CGH. RESULTS 5q14.3 microdeletions ranging from 216 kb to 8.8 Mb were detected in five unrelated patients with the following phenotypic similarities: severe mental retardation with absent speech, hypotonia and stereotypic movements. Facial dysmorphic features, epilepsy and/or cerebral malformations were also present in most of these patients. The minimal common deleted region of these 5q14 microdeletions encompassed only MEF2C, the gene for a protein known to act in brain as a neurogenesis effector, which regulates excitatory synapse number. In a patient with a similar phenotype, an MEF2C nonsense mutation was subsequently identified. CONCLUSION Taken together, these results strongly suggest that haploinsufficiency of MEF2C is responsible for severe mental retardation with stereotypic movements, seizures and/or cerebral malformations.
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Rosenberg-Lee M, Kondos L, Barth M, Geary D, Menon V. Neural deficits underlying Mathematical Disability in Children. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70986-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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van Dongen EV, Takashima A, Barth M, Norris DG, Fernández G. Resting-state connectivity between the hippocampus and frontal areas following encoding of face-location associations predicts subsequent recall performance. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70175-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Akhyari P, Ziegler H, Mambou P, Barth M, Hoffmann S, Kamiya H, Suprunov M, Berger I, Franke WW, Karck M, Lichtenberg A. Impact of protein coating strategies on the re-endothelialization of biological heart valve scaffolds. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Marechal C, Barth M, Ebran J, Pajot O, Bonneau D, Cochereau I. 631 Intérêt de l’examen ophtalmologique dans l’épilepsie de l’enfant : à propos d’un cas de syndrome d’Aicardi. J Fr Ophtalmol 2009. [DOI: 10.1016/s0181-5512(09)73755-6] [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]
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Barth M, Strohm P, Zipfel E, Krüger M, Schnakenburg CV. Reizgasexposition und somatopsychische Auswirkungen auf Schüler – Belastungsreaktionen nach rettungsdienstlichem Großeinsatz und stationärer Weiterbehandlung. KLINISCHE PADIATRIE 2009. [DOI: 10.1055/s-0029-1214329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Praskova M, Fiedler H, Zieger B, Barth M. Wirksamkeit einer kurzen psychologischen Vorbereitung von Kindern bei Blutentnahmen mithilfe eines Büchleins. KLINISCHE PADIATRIE 2009. [DOI: 10.1055/s-0029-1214328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Pechlivanis I, Harders A, Tüttenberg J, Barth M, Schulte-Altedorneburg G, Schmieder K. Computed Tomographic Angiography: Diagnostic Procedure of Choice in the Management of Subarachnoid Hemorrhage in the Elderly Patient? Cerebrovasc Dis 2009; 28:481-9. [DOI: 10.1159/000236526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Accepted: 07/13/2009] [Indexed: 11/19/2022] Open
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Lichtenberg A, Akhyari P, Kamiya H, Mambou P, Ziegler H, Barth M, Suprunov M, Tschierschke R, Schilp S, Berger I, Franke WW, Karck M. Surface coating of the matrix using autologous fibrin improved an in vivo re-endothelialization of allogeneic detergent-decellularized heart valves. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lichtenberg A, Akhyari P, Kamiya H, Mambou P, Tschierschke R, Ziegler H, Barth M, Schilp S, Berger I, Franke WW, Karck M. Decellularization reduces inflammatory reaction, calcification and extracellular matrix degeneration in pulmonary allografts. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Theysohn JM, Kraff O, Maderwald S, Barth M, Mönninghoff C, Ladd SC, Schaefer L, Lohbeck S, Forsting M, Ladd ME, Gizewski ER. Therapy optimization in vascular dementia with the help of 7 Tesla? ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0028-1124032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Strik MW, Anders S, Barth M, Bärlehner E, Benecke C, Benhidjeb T. [Total videoendoscopic thyroid resection by the axillobilateral breast approach. Operative method and first results]. Chirurg 2008; 78:1139-44. [PMID: 17805497 DOI: 10.1007/s00104-007-1399-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND The axillobilateral breast approach (ABBA) is a procedure allowing thyroid resection without scarring at the neck. We operated on a series of 26 patients with this technique. METHOD Via incisions at the edge of the mamilla and axilla, trocars are placed subcutaneously under the platyma. Dissection is performed bluntly and with an ultrasonographic scalpel under videoscopic control. The procedure itself corresponds to conventional surgery. The specimen is removed through the axillary trocar. RESULTS Twenty-six female patients underwent thyroid resection using the ABBA technique. Subtotal resection was performed in 24. Mean operation times were 111 min (unilateral) and 187 min (bilateral). In none of these cases was conversion necessary. One transient recurrent laryngeal nerve palsy and one paresis of the arm plexus were found postoperatively. CONCLUSION In selected patients the ABBA technique is feasible and safe with the mandatory radicalness. The primary aim of this method is the cosmetic result.
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Schubert L, Barth M, Klesse T, Köhler B, Frankenstein B. Guided elastic waves and their impact interaction in CFRP structures characterized by 3D laser scanning vibrometry. ACTA ACUST UNITED AC 2008. [DOI: 10.1117/12.777510] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Grunert K, Barth M, Eisenberger F, Arlart I. Ergebnisanalyse einer retrospektiven Studie an 150 Patienten zur Therapie der Varikocele testis. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1057783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Vecherin SN, Ostashev VE, Ziemann A, Wilson DK, Arnold K, Barth M. Tomographic reconstruction of atmospheric turbulence with the use of time-dependent stochastic inversion. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2007; 122:1416. [PMID: 17927403 DOI: 10.1121/1.2756798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Acoustic travel-time tomography allows one to reconstruct temperature and wind velocity fields in the atmosphere. In a recently published paper [S. Vecherin et al., J. Acoust. Soc. Am. 119, 2579 (2006)], a time-dependent stochastic inversion (TDSI) was developed for the reconstruction of these fields from travel times of sound propagation between sources and receivers in a tomography array. TDSI accounts for the correlation of temperature and wind velocity fluctuations both in space and time and therefore yields more accurate reconstruction of these fields in comparison with algebraic techniques and regular stochastic inversion. To use TDSI, one needs to estimate spatial-temporal covariance functions of temperature and wind velocity fluctuations. In this paper, these spatial-temporal covariance functions are derived for locally frozen turbulence which is a more general concept than a widely used hypothesis of frozen turbulence. The developed theory is applied to reconstruction of temperature and wind velocity fields in the acoustic tomography experiment carried out by University of Leipzig, Germany. The reconstructed temperature and velocity fields are presented and errors in reconstruction of these fields are studied.
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Barth M, Capelle HH, Münch E, Thomé C, Fiedler F, Schmiedek P, Vajkoczy P. Effects of the selective endothelin A (ET(A)) receptor antagonist Clazosentan on cerebral perfusion and cerebral oxygenation following severe subarachnoid hemorrhage - preliminary results from a randomized clinical series. Acta Neurochir (Wien) 2007; 149:911-8; discussion 918. [PMID: 17700991 DOI: 10.1007/s00701-007-1249-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2006] [Accepted: 03/13/2007] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To study the effects of clazosentan, a new selective endothelin receptor subtype A antagonist, on cerebral perfusion and cerebral oxygenation following severe aneurysmal subarachnoid haemorrhage (aSAH). METHODS All 12 patients treated at our institution in the context of a phase IIa, multicenter, randomized trial on clazosentan's safety and efficacy in reducing the incidence of angiographic cerebral vasospasm were included in this substudy. The phase IIa study (n = 34) consisted of two parts: a double-blind, randomized Part A (clazosentan 0.2 mg/kg/h versus placebo) and an open-label Part B (clazosentan 0.4 mg/kg/h for 12 h followed by 0.2 mg/kg/h) for patients with established vasospasm. In parallel to the phase IIa study protocol, which included assessment of vasospasm by angiography and transcranial Doppler sonography, we determined regional cerebral blood flow (rCBF), cerebrovascular resistance, and regional tissue oxygenation. RESULTS Cerebral perfusion was comparable between treatment groups during the early post-bleeding period (rCBF placebo, 22.6 +/- 3.5 ml/100 g/min versus rCBF clazosentan, 23.9 +/- 1.1 ml/100 g/min). By the time of control angiography (day 8 after aSAH), rCBF decreased by 50% in the placebo group (11.3 +/- 6.7 ml/ 100 g/min) while it remained stable in the clazosentan group (23.5 +/- 12.9 ml/100 g/min). During Part B of the study, all 3 patients who developed haemodynamically relevant vasospasm during placebo treatment, showed a sustained improvement in rCBF upon conversion to clazosentan. CONCLUSIONS These preliminary data suggest that clazosentan reduces the extent of vasospasm-associated impairment of cerebral perfusion following aSAH. Furthermore, clazosentan may exert beneficial actions on overt vasospasm-associated hypoperfusion.
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Barth M, Norris DG. Very high-resolution three-dimensional functional MRI of the human visual cortex with elimination of large venous vessels. NMR IN BIOMEDICINE 2007; 20:477-84. [PMID: 17405190 DOI: 10.1002/nbm.1158] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We propose a very high-resolution, three-dimensional (3D) gradient-echo technique with a twofold parallel imaging acceleration using a specialized occipital receiver coil at 3 T to perform functional MRI (fMRI) of the visual cortex. This configuration makes it possible to acquire 3D fMRI data within a timescale compatible with a block design. Without further processing, the functional maps at an isotropic 3D resolution of 0.42 microL (0.75 mm voxel size) and near-isotropic resolution of 1.2 microL (1 mm voxel size) show very robust activation in visual areas, but with clear contamination from larger veins. As this technique allows direct identification of veins in the functional scan, it permits removal of their effect from the activation maps. In our study, elimination of veins qualitatively improves the spatial specificity of activation maps, while reducing the activated volume by about 25%. The proposed technique provides functional information at the resolution of anatomical scans, is localized to gray matter, and facilitates functional to anatomical co-registration because of minimal distortions.
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Paraoanu LE, Boutter J, Landgraf D, Barth M, Layer P. Cholinesterases and cholinergic system in embryonic stem cell regulation: data on gene expression and functions. J Stem Cells Regen Med 2007; 2:139. [PMID: 24692957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Strik M, Anders S, Barth M, Benecke C, Benhidjeb T. Total video-endoskopische Schilddrüsenresektion via eines axillo-billateral-breast-approach (ABBA). Zentralbl Chir 2006. [DOI: 10.1055/s-2006-944381] [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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Porreca F, Vanderah TW, Guo W, Barth M, Dodey P, Peyrou V, Luccarini JM, Junien JL, Pruneau D. Antinociceptive pharmacology of N-[[4-(4,5-dihydro-1H-imidazol-2-yl)phenyl]methyl]-2-[2-[[(4-methoxy-2,6-dimethylphenyl) sulfonyl]methylamino]ethoxy]-N-methylacetamide, fumarate (LF22-0542), a novel nonpeptidic bradykinin B1 receptor antagonist. J Pharmacol Exp Ther 2006; 318:195-205. [PMID: 16565167 DOI: 10.1124/jpet.105.098368] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The antinociceptive pharmacology of N-[[4-(4,5-dihydro-1H-imidazol-2-yl)phenyl]methyl]-2-[2-[[(4-methoxy-2,6-dimethylphenyl) sulfonyl]methylamino]ethoxy]-N-methylacetamide fumarate (LF22-0542), a novel nonpeptidic B1 antagonist, was characterized. LF22-0542 showed high affinity for human and mouse B1 receptors with virtually no affinity for the human B2 receptor; a selectivity index of at least 4000 times was obtained when LF22-0542 was profiled throughout binding or cell biology assays on 64 other G-protein-coupled receptor, 10 ion channels, and seven enzymes. LF22-0542 was a competitive B1 receptor antagonist and elicited significant antinociceptive actions in the mouse acetic acid-induced writhing assay, as well as in the second phases of formalin-induced nociception in mice and in both the first and second phases of the formalin response in rats. LF22-0542 was active after s.c. but not p.o. administration. In B1 receptor knockout (KO) mice, acetic acid and formalin responses were significantly reduced and LF22-0542 had no additional effects in these animals. LF22-0542 alleviated thermal hypersensitivity in both acute (carrageenan) and persistent inflammatory (complete Freund's adjuvant) pain models in rats. LF22-0542 produced a full reversal of experimental neuropathic thermal hypersensitivity but was inactive in reversing nerve injury-induced tactile hypersensitivity in rats. In agreement with this observation, B1 KO mice subjected to peripheral nerve injury did not show thermal hypersensitivity but developed nerve injury-induced tactile hypersensitivity normally. The data demonstrate the antihyperalgesic actions of a selective systemically administered B1 receptor antagonist and suggest the utility of this class of agents for the treatment of inflammatory pain states and for some aspects of neuropathic pain.
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