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Wilhelm M, Hirsch W, Merkenschlager A, Stepan H, Geyer C, Kiess W. A rare case of congenital choroid plexus carcinoma. Pediatr Hematol Oncol 2012; 29:643-6. [PMID: 22881717 DOI: 10.3109/08880018.2012.710298] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We report a 1-year-old child with the prenatal (week 29 + 5) diagnosis of a brain tumor. The parents were informed about all aspects of prognosis and options concerning termination of pregnancy. The parents opted for an aggressive therapeutic approach after extensive and informative case conferences and counseling. The histopathological diagnosis after partial tumor resection was choroid plexus carcinoma, two weeks thereafter tumor size was progressive. The parents opted for palliative treatment at this stage. The patient died at the age of one year. Ethical aspects have to be actively considered and addressed when caring for children with choroid plexus carcinoma.
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Meins T, Dingenouts N, Kübel J, Wilhelm M. In Situ Rheodielectric, ex Situ 2D-SAXS, and Fourier Transform Rheology Investigations of the Shear-Induced Alignment of Poly(styrene-b-1,4-isoprene) Diblock Copolymer Melts. Macromolecules 2012. [DOI: 10.1021/ma300124b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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78
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Härtl F, Reeps C, Wilhelm M, Ockert S, Zimmermann A, Eckstein HH. [Open and endovascular repair of abdominal aortic aneurysms - clinical picture, evidence, results]. Dtsch Med Wochenschr 2012; 137:1303-8. [PMID: 22669699 DOI: 10.1055/s-0032-1305055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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79
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Zils K, Wilhelm M, Reeh T, Bielack S. Bullous variant of acral erythema in a child after high-dose methotrexate. Pediatr Hematol Oncol 2012; 29:378-9. [PMID: 22568802 DOI: 10.3109/08880018.2012.665982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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80
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Hans M, Wilhelm M, Swandulla D. Menthol suppresses nicotinic acetylcholine receptor functioning in sensory neurons via allosteric modulation. Chem Senses 2012; 37:463-9. [PMID: 22281529 PMCID: PMC3348174 DOI: 10.1093/chemse/bjr128] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In this study, we have investigated how the function of native and recombinant nicotinic acetylcholine receptors (nAChRs) is modulated by the monoterpenoid alcohol from peppermint (−) menthol. In trigeminal neurons (TG), we found that nicotine (75 μM)-activated whole-cell currents through nAChRs were reversibly reduced by menthol in a concentration-dependent manner with an IC50 of 111 μM. To analyze the mechanism underlying menthol's action in more detail, we used single channel and whole-cell recordings from recombinant human α4β2 nAChR expressed in HEK tsA201 cells. Here, we found a shortening of channel open time and a prolongation of channel closed time, and an increase in single channel amplitude leading in summary to a reduction in single channel current. Furthermore, menthol did not affect nicotine's EC50 value for currents through recombinant human α4β2 nAChRs but caused a significant reduction in nicotine's efficacy. Taken together, these findings indicate that menthol is a negative allosteric modulator of nAChRs.
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Meins T, Hyun K, Dingenouts N, Fotouhi Ardakani M, Struth B, Wilhelm M. New Insight to the Mechanism of the Shear-Induced Macroscopic Alignment of Diblock Copolymer Melts by a Unique and Newly Developed Rheo–SAXS Combination. Macromolecules 2011. [DOI: 10.1021/ma201492n] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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82
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Harms C, Wilhelm M, Grathwohl G. Influence of PDMS chain length on proton conductivity in polysiloxane based membranes for HT-PEMFC application. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2011.08.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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83
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Wilhelm M, Petry KU. Fetale hämolytische Anämie bei hereditärer Stomatozytose – Ein Fallbericht. Z Geburtshilfe Neonatol 2011. [DOI: 10.1055/s-0031-1293458] [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]
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84
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Rech J, Manger B, Lang B, Schett G, Wilhelm M, Birkmann J. Adult-onset Still's disease and chronic recurrent multifocal osteomyelitis: a hitherto undescribed manifestation of autoinflammation. Rheumatol Int 2011; 32:1827-9. [PMID: 21769488 DOI: 10.1007/s00296-011-2020-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Accepted: 07/10/2011] [Indexed: 10/18/2022]
Abstract
Still's disease and chronic recurrent multifocal osteomyelitis (CRMO) are febrile rheumatic diseases of unknown etiology, which predominantly affect children but can also have their initial manifestation in adults. Both can present as intermittent, relapsing episodes and are considered potential candidates within the expanding spectrum of autoinflammatory disorders, although no genetic abnormalities have been described for either of them. Here, we describe a man with an initial manifestation of abacterial multifocal osteitis at the age of 41. During a relapsing-remitting course of his illness, he increasingly developed symptoms of adult-onset Still's disease (AOSD), and the diagnosis was established according to the Yamaguchi criteria. When treated with anakinra, not only the acute symptoms disappeared promptly, but also the osteitis went into complete remission. This is to our knowledge the first description of a simultaneous occurrence of these two manifestations of autoinflammation in adulthood.
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Adamus R, Uder M, Wilhelm M, Loose R. Periinterventionelle Cone-Beam-CT: Anwendung bei transarterieller Chemoembolisation von Lebertumoren. ROFO-FORTSCHR RONTG 2011; 183:658-61. [DOI: 10.1055/s-0029-1246050] [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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86
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Horwitz SM, Coiffier B, Foss FM, Prince HM, Sokol L, Greenwood M, Caballero D, Borchmann P, Morschhauser F, Wilhelm M, Pinter-Brown LC, Padmanabhan S, Shustov AR, Nichols J, Balser J, Carroll S, Pro B. Complete responses (CR/CRu) on a phase II study of romidepsin in relapsed or refractory peripheral T-cell lymphoma (R/R PTCL). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.8033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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87
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Kunzmann V, Smetak M, Kimmel B, Weigang-Koehler K, Goebeler M, Birkmann J, Becker J, Schmidt-Wolf I, Einsele H, Wilhelm M. Pro- versus antitumor effects of bisphosphonate-activated γδ T cells in cancer immunotherapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.2569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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88
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Brader JM, Siebenbürger M, Ballauff M, Reinheimer K, Wilhelm M, Frey SJ, Weysser F, Fuchs M. Nonlinear response of dense colloidal suspensions under oscillatory shear: mode-coupling theory and Fourier transform rheology experiments. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2010; 82:061401. [PMID: 21230671 DOI: 10.1103/physreve.82.061401] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Indexed: 05/30/2023]
Abstract
Using a combination of theory, experiment, and simulation we investigate the nonlinear response of dense colloidal suspensions to large amplitude oscillatory shear flow. The time-dependent stress response is calculated using a recently developed schematic mode-coupling-type theory describing colloidal suspensions under externally applied flow. For finite strain amplitudes the theory generates a nonlinear response, characterized by significant higher harmonic contributions. An important feature of the theory is the prediction of an ideal glass transition at sufficiently strong coupling, which is accompanied by the discontinuous appearance of a dynamic yield stress. For the oscillatory shear flow under consideration we find that the yield stress plays an important role in determining the nonlinearity of the time-dependent stress response. Our theoretical findings are strongly supported by both large amplitude oscillatory experiments (with Fourier transform rheology analysis) on suspensions of thermosensitive core-shell particles dispersed in water and Brownian dynamics simulations performed on a two-dimensional binary hard-disk mixture. In particular, theory predicts nontrivial values of the exponents governing the final decay of the storage and loss moduli as a function of strain amplitude which are in good agreement with both simulation and experiment. A consistent set of parameters in the presented schematic model achieves to jointly describe linear moduli, nonlinear flow curves, and large amplitude oscillatory spectroscopy.
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Palza H, Reznik B, Kappes M, Hennrich F, Naue I, Wilhelm M. Characterization of melt flow instabilities in polyethylene/carbon nanotube composites. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.06.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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90
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Wilhelm M, Chhetri M, Rychtář J, Rueppell O. A Game Theoretical Analysis of the Mating Sign Behavior in the Honey Bee. Bull Math Biol 2010; 73:626-38. [DOI: 10.1007/s11538-010-9544-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2008] [Accepted: 04/15/2010] [Indexed: 11/27/2022]
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91
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Scharf M, Wilhelm M, Uder M, Lell M. Strukturelle und funktionelle Veränderungen in der Cardio-MRT bei Triathleten. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252803] [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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92
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Fehrenbacher U, Grosshardt O, Kowollik K, Tübke B, Dingenouts N, Wilhelm M. Synthese und Charakterisierung von Polyestern und Polyamiden auf der Basis von Furan-2,5-dicarbonsäure. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200900090] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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93
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Wilhelm M, Petry KU, Reinecke-Lüthge A. Intrauteriner Fruchttod bei TORCH – Fallbericht und Literaturanalyse. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1222959] [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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94
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Wilhelm M, Kuhn R. Versuch einer stereochemisch-strukturellen Klassifizierung der Trizyklus-Psychopharmaka mit Einschluß der Dibenzo-bicyclooctadiene. PHARMACOPSYCHIATRY 2009. [DOI: 10.1055/s-0028-1094287] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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95
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Hussein CF, Löblein H, Otte S, Seifert B, Wilhelm M, Tavakoli R, Lachat M, Genoni M. Impact of low and high hematocrit at hospital discharge on rehabilitation outcome in patients after cardiac and major aortic surgery. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191374] [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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96
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Stojsih S, Boitano M, Wilhelm M, Bir C. A prospective study of punch biomechanics and cognitive function for amateur boxers. Br J Sports Med 2008; 44:725-30. [PMID: 19019907 DOI: 10.1136/bjsm.2008.052845] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To evaluate several biomechanical factors of the head during a sparring session and their link to cognitive function. DESIGN Instrumented Boxing Headgear (IBH) was used for data collection during four 2 min sparring sessions. Neurocognitive assessment was measured using the ImPACT Concussion management software. A baseline neurocognitive test was obtained from each athlete prior to sparring; two additional tests were obtained and compared with the baseline. SETTING Male and female amateur boxers. PARTICIPANTS Data were collected from 30 male and 30 female amateur boxers. MAIN OUTCOME MEASUREMENTS Head accelerations (translational and rotational), injury severity indexes (Head Injury Criteria (HIC) and Gadd Severity Index (GSI)) and cognitive function scores. Results Peak translational and rotational acceleration values were 191 g and 17,156 rad/s(2), respectively, for males and 184 g and 13,113 rad/s(2), respectively, for females. The peak HIC and GSI values for males were 1652 and 2292, respectively, and for females 1079 and 1487, respectively. There was no significant difference in the neurocognitive scores between genders. A decrease was exhibited in the delayed memory postbout scores. All other scores either increased or did not significantly decrease when compared with the baseline. CONCLUSIONS The majority of impacts experienced by both genders were under the threshold for mild head injury. There was a statistically significant difference between peak translational and rotational acceleration, HIC and GSI when comparing genders. When analysing cognitive functions, there was no statistical difference between genders.
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Roos PH, Tschirbs S, Hack A, Welge P, Wilhelm M. Different mechanisms of handling ingested polycyclic aromatic hydrocarbons in mammalian species: organ-specific response patterns of CYP1A1-induction after oral intake of PAH-contaminated soils. Xenobiotica 2008; 34:781-95. [PMID: 15742974 DOI: 10.1080/00498250400010880] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Potential effects of xenobiotics on humans are largely derived from studies with animal models. However, due to species-specific processing of xenobiotics, susceptibilities to xenobiotic-dependent adverse effects are known to differ between species. We analysed the basal expression of cytochrome P450 (CYP) enzymes in several organs of minipigs and rats, and their inducibility upon oral intake of soils containing polycyclic aromatic hydrocarbons (PAH). CYP-specific enzymatic activities were determined in duodenum, liver and kidney microsomes. Upon ingestion of PAH-contaminated soils, CYP1A1 is differentially induced in a tissue-specific and dose-dependent manner in duodenum, liver and kidney of minipigs and rats. In the duodenum, the induction response is low in rats (about 4-fold) but it is high in minipigs (8-230-fold). By contrast, induced hepatic CYP1A1-dependent EROD-activity is higher in rats than in minipigs. The dose-response profile for renal CYP1A1 parallels that in the liver of either species but EROD-activities are 10-20 times lower than in the liver. Liver microsomal CYP2E1 is only slightly modulated in its expression by ingestion of PAH-contaminated soils in both species, whereas CYP3A-dependent testosterone 2beta- and 6beta-hydroxylation is increased in liver of rats but not in minipigs. The hepatic capacity for catechol oestrogen formation, i.e., the 2-hydroxylation of 17beta-oestradiol, is markedly increased in rats but not in minipigs by ingested PAH. It is concluded that different metabolic and transport pathways are used by minipigs and rats to process ingested PAH. Whereas in minipigs the duodenum appears as the first efficient barrier, rats respond by efficient metabolism in the liver. What is not known is which response profile is operative in man.
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Reimer P, Rüdiger T, Einsele H, Geissinger E, Weissinger F, Nerl C, Schmitz N, Engert A, Müller-Hermelink H, Wilhelm M. Autologous stem cell transplantation (autoSCT) as first-line therapy in peripheral T cell lymphomas (PTCL): Results of a prospective multicenter study. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.8515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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99
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Cramer C, Ranft U, Ring J, Mohrenschlager M, Behrendt H, Oppermann H, Wilhelm M, Kramer U. Allergic sensitization and disease in mother-child pairs from Germany: role of early childhood environment. Int Arch Allergy Immunol 2007; 143:282-9. [PMID: 17351327 DOI: 10.1159/000100574] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2006] [Accepted: 12/20/2006] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Early childhood influences are important for the development of the allergic phenotype. In East Germany, tremendous lifestyle changes took place after 1990 and it can be hypothesized that the allergic phenotypes in mothers and their children are less similar than in West Germany. This was investigated in our study done in mothers and their 6-year-old children from East and West Germany in the year 2000. METHODS 1,393 mother-child pairs participated. A subgroup of 774 pairs gave blood for the determination of specific IgE. Regional differences in mother-child correlations and in prevalence of mother-child combinations with respect to allergic sensitization and disease were examined by logistic regression analysis. RESULTS The adjusted association in positive allergic sensitization between mothers and their children was not significant in East Germany (OR 1.23, 95% CI: 0.68-2.24) but highly significant in West Germany (OR 2.89, 95% CI: 1.73-4.80). The probability for the combination of 'negative' mother and 'positive' child was significantly higher in East than in West Germany. CONCLUSIONS Mother-child transmission of atopy predisposition can even be cancelled by environmental changes.
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Wilhelm M, Weber D, Mayer D, Gauer JM, Pfammatter T, Genoni M, Lachat ML. Aortic arch repair: Supraaortic rebranching combined with endovascular stentgraft implantation to avoid deep hypothermia and circulatory arrest. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967584] [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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