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von Felbert V, Kernland-Lang K, Hoffmann G, Wienert V, Simon D, Hunziker T. Irradiation with water-filtered infrared A plus visible light improves cutaneous scleroderma lesions in a series of cases. Dermatology 2011; 222:347-57. [PMID: 21757879 DOI: 10.1159/000329024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Accepted: 04/16/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Cutaneous scleroderma is a chronic inflammatory disease of the dermal and subcutaneous connective tissue leading to sclerosis. Sclerosis of the skin can lead to dysmorphism, contractures and restrictions of movement. OBJECTIVE The purpose of the study was to evaluate sclerosis in cutaneous scleroderma patients and to determine the efficacy of water-filtered infrared A plus visible light treatment, wIRA(+VIS), in 10 patients. METHODS Hardness of the normal and diseased skin was measured by durometry in 10 controls and 8 patients. Moreover, circumscribed scleroderma (CS) was treated with wIRA(+VIS) irradiations in 10 patients who had not responded to conventional therapies. RESULTS wIRA(+VIS) therapy led to a marked improvement, persistent even during long-term follow-up, in 7 out of 10 patients with CS. Of the other patients, 1 showed decreased sclerosis and disease activity and developed a worsening after cessation of therapy. In 2 further patients, where previous UVA1 treatment had failed to reduce disease activity, wIRA(+VIS) produced a slight decrease in sclerosis, but disease activity was still present. CONCLUSION wIRA(+VIS) appears to be effective in the treatment of CS. Durometry proved to be helpful in assessing the degree of sclerosis and in documenting the response to therapy in these patients.
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Daubert C, Rude J, Schobersberger W, Hoffmann G. Effektivität der Manuellen Lymphdrainage in der Erhaltungsphase einseitiger, sekundärer Armlymphödeme - Eine Pilotstudie. AKTUELLE DERMATOLOGIE 2011. [DOI: 10.1055/s-0030-1256091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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78
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Daubert C, Rude J, Schobersberger W, Hoffmann G. Effektivität der Elastische-Tape-Technik in der Erhaltungsphase einseitiger, sekundärer Armlymphödeme. PHYSIOSCIENCE 2011. [DOI: 10.1055/s-0029-1246081] [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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79
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Schoeneich F, Rahimi A, Hoffmann G, Eide M, Schöttler J, Cremer J. Transatrial left-ventricular cannulation in acute typ A aortic dissection: Save, easy and effective! Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269334] [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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80
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Noske A, Loibl S, Darb-Esfahani S, Roller M, Kronenwett R, Müller BM, Steffen J, von Toerne C, Wirtz R, Baumann I, Hoffmann G, Heinrich G, Grasshoff ST, Ulmer HU, Denkert C, von Minckwitz G. Comparison of different approaches for assessment of HER2 expression on protein and mRNA level: prediction of chemotherapy response in the neoadjuvant GeparTrio trial (NCT00544765). Breast Cancer Res Treat 2010; 126:109-17. [PMID: 21190079 DOI: 10.1007/s10549-010-1316-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 12/16/2010] [Indexed: 10/18/2022]
Abstract
Human epidermal growth factor receptor 2 (HER2) testing is an essential part of pathological assessment in breast cancer patients, as HER2 provides not only prognostic but also predictive information on response to targeted therapy. So far, HER2 test accuracy of immunohistochemistry/in situ-hybridization techniques is still under debate, and more reliable and robust technologies are needed. To address this issue and to evaluate the predictive value of HER2 on chemotherapy, we investigated a cohort of 278 patients from the GeparTrio trial, a prospective neoadjuvant anthracycline/taxane-based multicenter study. In the GeparTrio trial, patients were not treated with any anti-HER2 therapy, as this was not standard therapy at this time. The HER2 status was analyzed by three different approaches: local and central evaluation using immunohistochemistry combined with in situ-hybridization as well as evaluation of HER2 mRNA expression using kinetic RT-PCR from formalin-fixed, paraffin-embedded (FFPE) tissue samples using a predefined cutoff. HER2 overexpression/amplification was observed in 37.3% (91/244) and 17.9% (41/229) of the informative samples in the local and central evaluations, respectively. Positive HER2 mRNA levels were found in 19.8% (55/278). We observed a highly significant correlation between central HER2 expression and HER2 status measured by kinetic RT-PCR (r = 0.856, P < 0.0001) and an overall agreement of 95.6% (κ statistic, 0.862, CI 0.77-0.94). Further, central HER2 as well as HER2 mRNA expression were predictors for a pathological complete response after neoadjuvant anthracycline/taxane-based primary chemotherapy in a univariate binary logistic regression analysis (OR 3.29, P = 0.002; OR 2.65, P = 0.004). The predictive value could be confirmed for the central HER2 status by multivariate analysis (OR 3.04, P = 0.027). The locally assessed HER2 status was not predictive of response to chemotherapy. Our results suggest that standardized methods are preferable for evaluation of HER2 status. The kinetic RT-PCR from FFPE tissue might be an additional approach for assessment of this important prognostic and predictive parameter but has to be confirmed by other studies.
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MESH Headings
- Adult
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Breast Neoplasms/drug therapy
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Capecitabine
- Carcinoma, Ductal, Breast/drug therapy
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Lobular/drug therapy
- Carcinoma, Lobular/genetics
- Carcinoma, Lobular/metabolism
- Chemotherapy, Adjuvant
- Cyclophosphamide/administration & dosage
- Deoxycytidine/administration & dosage
- Deoxycytidine/analogs & derivatives
- Docetaxel
- Doxorubicin/administration & dosage
- Female
- Fluorouracil/administration & dosage
- Fluorouracil/analogs & derivatives
- Humans
- Immunoenzyme Techniques
- Neoadjuvant Therapy
- Prognosis
- Prospective Studies
- RNA, Messenger/genetics
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Survival Rate
- Taxoids/administration & dosage
- Vinblastine/administration & dosage
- Vinblastine/analogs & derivatives
- Vinorelbine
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81
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Atodiresei N, Brede J, Lazić P, Caciuc V, Hoffmann G, Wiesendanger R, Blügel S. Design of the local spin polarization at the organic-ferromagnetic interface. PHYSICAL REVIEW LETTERS 2010; 105:066601. [PMID: 20867994 DOI: 10.1103/physrevlett.105.066601] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Indexed: 05/29/2023]
Abstract
By means of ab initio calculations and spin-polarized scanning tunneling microscopy experiments the creation of a complex energy dependent magnetic structure with a tailored spin-polarized interface is demonstrated. We show this novel effect by adsorbing organic molecules containing π(p(z)) electrons onto a magnetic surface. The hybridization of the out-of-plane p(z) atomic-type orbitals with the d states of the metal leads to the inversion of the spin polarization at the organic site due to a p(z)-d Zener exchange-type mechanism. As a key result, we demonstrate the possibility to selectively and efficiently inject spin-up and spin-down electrons from a ferromagnetic-organic interface, an effect which can be exploited in future spintronic devices.
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82
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Brede J, Atodiresei N, Kuck S, Lazić P, Caciuc V, Morikawa Y, Hoffmann G, Blügel S, Wiesendanger R. Spin- and energy-dependent tunneling through a single molecule with intramolecular spatial resolution. PHYSICAL REVIEW LETTERS 2010; 105:047204. [PMID: 20867880 DOI: 10.1103/physrevlett.105.047204] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Indexed: 05/29/2023]
Abstract
We investigate the spin- and energy-dependent tunneling through a single organic molecule (CoPc) adsorbed on a ferromagnetic Fe thin film, spatially resolved by low-temperature spin-polarized scanning tunneling microscopy. Interestingly, the metal ion as well as the organic ligand show a significant spin dependence of tunneling current flow. State-of-the-art ab initio calculations including also van der Waals interactions reveal a strong hybridization of molecular orbitals and substrate 3d states. The molecule is anionic due to a transfer of one electron, resulting in a nonmagnetic (S=0) state. Nevertheless, tunneling through the molecule exhibits a pronounced spin dependence due to spin-split molecule-surface hybrid states.
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83
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Chang SH, Scarfato A, Kleeberg C, Bröring M, Hoffmann G, Wiesendanger R. Adsorption behavior of asymmetric Pd pincer complexes on a Cu(111) surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:10868-10871. [PMID: 20441153 DOI: 10.1021/la100746a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We address the adsorption of asymmetric Pd pincer complexes on a Cu(111) surface by scanning tunneling microscopy. The structural asymmetry is manifested in the observation of two chiral enantiomers. To enable an unambiguous identification of individual constituents, three closely related complexes with small modifications are investigated in parallel. Thereby, methyl substituents determine attractive molecule-molecule interaction. Depending on their distribution, dimerization and tetramerization can be observed.
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84
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von Felbert V, Hoffmann G, Hoff-Lesch S, Abuzahra F, Renn CN, Braathen LR, Merk HF. Photodynamic therapy of multiple actinic keratoses: reduced pain through use of visible light plus water-filtered infrared A compared with light from light-emitting diodes. Br J Dermatol 2010; 163:607-15. [PMID: 20426780 DOI: 10.1111/j.1365-2133.2010.09817.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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85
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Hoffmann G, Rahimi A, Schöneich F, Lutter G, Cremer J. Transatrial cannulation for acute type A dissection. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246742] [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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86
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Kainer F, Urban B, Hoffmann G, Genzel-Boroviczeny O, Lackner C. Simulationskreißsaal: Notfallsituationen am Phantom üben. Geburtshilfe Frauenheilkd 2010. [DOI: 10.1055/s-0029-1240947] [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] Open
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87
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Neu D, Kornreich C, Montana X, Hoffmann G, Sentissi O, Verbanck P. P01-78 - Cognitive impairment and altered vigilance in treatment resistant major depression. Eur Psychiatry 2010. [DOI: 10.1016/s0924-9338(10)70297-2] [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: 10/19/2022] Open
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88
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89
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Noseda A, André S, Potmans V, Kentos M, de Maertelaer V, Hoffmann G. CPAP with algorithm-based versus titrated pressure: A randomized study. Sleep Med 2009; 10:988-92. [DOI: 10.1016/j.sleep.2008.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2008] [Revised: 08/12/2008] [Accepted: 08/12/2008] [Indexed: 11/26/2022]
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90
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Hermanussen M, Gonder U, Jakobs C, Stegemann D, Hoffmann G. Patterns of free amino acids in German convenience food products: marked mismatch between label information and composition. Eur J Clin Nutr 2009; 64:88-98. [PMID: 19773804 DOI: 10.1038/ejcn.2009.116] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES Free amino acids affect food palatability. As information on amino acids in frequently purchased pre-packaged food is virtually absent, we analyzed free amino acid patterns of 17 frequently purchased ready-to-serve convenience food products, and compared them with the information obtained from the respective food labels. SUBJECTS/METHODS Quantitative amino acid analysis was performed using ion-exchange chromatography. gamma-Aminobutyric acid (GABA) concentrations were verified using a stable isotope dilution gas chromatography/mass spectrometry (GC-MS) method. The patterns of free amino acids were compared with information obtained from food labels. RESULTS An obvious mismatch between free amino acid patterns and food label information was detected. Even on considering that tomatoes and cereal proteins are naturally rich in glutamate, the concentrations of free glutamate outranged the natural concentration of this amino acid in several products, and strongly suggested artificial enrichment. Free glutamate was found to be elevated even in dishes that explicitly state 'no glutamate added'. Arginine was markedly elevated in lentils. Free cysteine was generally low, possibly reflecting thermal destruction of this amino acid during food processing. The meat and brain-specific dipeptide carnosine (CARN) was present in most meat-containing products. Some products did not contain detectable amounts of CARN in spite of meat content being claimed on the food labels. We detected GABA at concentrations that contribute significantly to the taste sensation. CONCLUSION This investigation highlights a marked mismatch between food label information and food composition.
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Hoffmann G, Jones P, Biourge V, van den Ingh T, Mesu S, Bode P, Rothuizen J. Dietary Management of Hepatic Copper Accumulation in Labrador Retrievers. J Vet Intern Med 2009; 23:957-63. [DOI: 10.1111/j.1939-1676.2009.0352.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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92
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93
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Kuck S, Chang SH, Klöckner JP, Prosenc MH, Hoffmann G, Wiesendanger R. Steering Two-Dimensional Molecular Growth via Dipolar Interaction. Chemphyschem 2009; 10:2008-11. [DOI: 10.1002/cphc.200900281] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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94
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Klemm D, Pfannenstiel P, Weißleder H, Hoffmann G. Auswirkungen der endolymphatischen131J-Therapie auf Proteine und zelluläre Bestandteile des menschlichen Blutes. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1228493] [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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95
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Weißleder H, Pfannenstiel P, Strickstrock K, Hoffmann G. Die endolymphatische Therapie mit radioaktiven Substanzen (Technik und Radiometrie). ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1228282] [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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96
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97
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Brede J, Linares M, Kuck S, Schwöbel J, Scarfato A, Chang SH, Hoffmann G, Wiesendanger R, Lensen R, Kouwer PHJ, Hoogboom J, Rowan AE, Bröring M, Funk M, Stafström S, Zerbetto F, Lazzaroni R. Dynamics of molecular self-ordering in tetraphenyl porphyrin monolayers on metallic substrates. NANOTECHNOLOGY 2009; 20:275602. [PMID: 19531869 DOI: 10.1088/0957-4484/20/27/275602] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
A molecular model system of tetraphenyl porphyrins (TPP) adsorbed on metallic substrates is systematically investigated within a joint scanning tunnelling microscopy/molecular modelling approach. The molecular conformation of TPP molecules, their adsorption on a gold surface and the growth of highly ordered TPP islands are modelled with a combination of density functional theory and dynamic force field methods. The results indicate a subtle interplay between different contributions. The molecule-substrate interaction causes a bending of the porphyrin core which also determines the relative orientations of phenyl legs attached to the core. A major consequence of this is a characteristic (and energetically most favourable) arrangement of molecules within self-assembled molecular clusters; the phenyl legs of adjacent molecules are not aligned parallel to each other (often denoted as pi-pi stacking) but perpendicularly in a T-shaped arrangement. The results of the simulations are fully consistent with the scanning tunnelling microscopy observations, in terms of the symmetries of individual molecules, orientation and relative alignment of molecules in the self-assembled clusters.
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98
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Ruhenstroth-Bauer G, Hoffmann G, Vogl S, Baumer H, Kulzer R, Peters J, Staub F. Artificial Simulation of Naturally Occurring, Biologically Active Atmospherics. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/15368379409030701] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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99
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Freichel C, Prinssen E, Hoffmann G, Gand L, Beck M, Weiser T, Breidenbac A. Oseltamivir is Devoid of Specific Behavioral and Other Central Nervous System Effects in Juvenile Rats at Supratherapeutic Oral Doses. ACTA ACUST UNITED AC 2009. [DOI: 10.3923/ijv.2009.119.130] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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100
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Kuck S, Hoffmann G, Bröring M, Fechtel M, Funk M, Wiesendanger R. “Naked” Iron-5,10,15-triphenylcorrole on Cu(111): Observation of Chirality on a Surface and Manipulation of Multiple Conformational States by STM. J Am Chem Soc 2008; 130:14072-3. [DOI: 10.1021/ja8059478] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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