76
|
Roth W, Grimmel C, Rieger L, Strik H, Takayama S, Krajewski S, Meyermann R, Dichgans J, Reed JC, Weller M. Bag-1 and Bcl-2 gene transfer in malignant glioma: modulation of cell cycle regulation and apoptosis. Brain Pathol 2006; 10:223-34. [PMID: 10764042 PMCID: PMC8098428 DOI: 10.1111/j.1750-3639.2000.tb00256.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Bag-1 is a heat shock 70 kDa (Hsp70)-binding protein that can collaborate with Bcl-2 in suppressing apoptosis under some conditions. Here, we report that 11 of 12 human glioma cell lines express Bag-1 protein in vitro. Moreover, 15 of 19 human glioblastomas expressed Bag-1 as assessed by immunohistochemistry in primary tumor specimens. To examine the biological effects of Bag-1 in glioma cells, we expressed Bag-1 or Bcl-2 transgenes in 2 human malignant glioma cell lines, LN-18 and LN-229. Bag-1 significantly slowed glioma cell growth and reduced clonogenicity of both cell lines in vitro. Coexpressed Bcl-2 abrogated these effects of Bag-1. Intracranial LN-229 glioma xenografts implanted into nude mice revealed a substantial growth advantage afforded by Bcl-2. Bag-1 had no such effect, either in the absence or presence of Bcl-2. Upon serum starvation in vitro, Bcl-2 prevented cell death whereas Bag-1 did not. Both Bcl-2 and Bag-1 slowed proliferation of serum-starved cells when expressed alone. Importantly, coexpression of Bcl-2 and Bag-1 provided a distinct growth advantage under conditions of serum starvation that is probably the result of (i) the death-preventing activity of Bcl-2 and (ii) the property of Bag-1 to overcome a Bcl-2-mediated enhancement of exit from the cell cycle. In contrast to these Bcl-2/Bag-1 interactions observed under serum starvation conditions, Bag-1 did not further enhance the strong protection from staurosporine-, CD95 (Fas/Apo1) ligand-, Apo2 ligand (TRAIL)- or chemotherapeutic drug-induced apoptosis afforded by Bcl-2. Taken together, these results indicate a role for Bag-1/Bcl-2 interactions in providing a survival advantage to cancer cells in a deprived microenvironment that may be characteristic of ischemic/hypoxic tumors such as human glioblastoma multiforme, and suggest that Bcl-2/Bag-1 interactions also modulate cell proliferation.
Collapse
|
77
|
Roth W, Kühbacher-Luz G, Keller C. Neuroaxial Regional Anesthesia in Children - The Innsbruck Concept. Anasthesiol Intensivmed Notfallmed Schmerzther 2006; 41:167-70. [PMID: 16557445 DOI: 10.1055/s-2005-921125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
78
|
|
79
|
Borchert M, Pfützner A, Lübben G, Roth W, Köder C, Forst T, Schöndorf T. Die Relaxin Expression korreliert mit Fibrinogen bei Frauen mit Typ 2 Diabetes unter oraler antidiabetischer Therapie. DIABETOL STOFFWECHS 2006. [DOI: 10.1055/s-2006-944004] [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]
|
80
|
Hohberg C, Forst T, Schöndorf T, Borchert M, Roth W, Lübben G, Pfützner A. Umstellung von Insulin auf Pioglitazon: Auswirkungen auf die Stoffwechselkontrolle bei Patienten mit Typ 2 Diabetes. DIABETOL STOFFWECHS 2006. [DOI: 10.1055/s-2006-943999] [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]
|
81
|
Peraire C, Arias JL, Bernal D, Pou J, León B, Arañó A, Roth W. Biological stability and osteoconductivity in rabbit tibia of pulsed laser deposited hydroxylapatite coatings. J Biomed Mater Res A 2006; 77:370-9. [PMID: 16425242 DOI: 10.1002/jbm.a.30556] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A comparative study of the biological stability and the osteoconductivity of hydroxylapatite (HA) coatings produced by pulsed laser deposition (PLD) and plasma spraying (PS) was conducted. Three different implant groups were used: grit-blasted titanium rods coated with HA-PLD (2-microm-thick), grit-blasted titanium rods coated with HA-PS (50-microm-thick), and uncoated. Implantation took place into the proximal tibia of 12 mature New Zealand White rabbits for 24 weeks. Samples were evaluated using descriptive histology and histomorphometry. While HA-PS implants showed considerable instability and reduction in thickness after 24 weeks, but no statistical difference to the titanium group, the HA-PLD group showed a significant higher amount of bone apposition (Scheffé test, p<0.05) than the other two groups, without signs of degradation or dissolution. Remarkably, after 6 months, the almost intact thin pulsed laser deposited coating could be observed by electron microscopy in extended areas.
Collapse
|
82
|
Roth W, Kling J, Gockel I, Rümelin A, Hessmann M, Meurer A, Gillitzer R, Jage J. Dissatisfaction with post-operative pain management—A prospective analysis of 1071 patients. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.acpain.2005.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
83
|
Schüßler T, Roth W, Gerber T, Alcaraz C, Fischer I. The VUV photochemistry of radicals: C3H3and C2H5. Phys Chem Chem Phys 2005; 7:819-25. [DOI: 10.1039/b414163f] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
84
|
Sorkin E, Roth W. Über die tuberkulostatische Wirkung einiger Oxin-ähnlicher Verbindungen. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19510340203] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
85
|
Roth W, Carrara G, Erlenmeyer H. Über die tuberkulostatischen Eigenschaften des Thiophen-2-carbonsäurehydrazids. Metallionen und biologische Wirkung. 15. Mitteilung. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19530360514] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
86
|
Müslin L, Roth W, Erlenmeyer H. Über die tuberkulostatische Aktivität einigerSchift'scher Basen. Metallionen und biologische Wirkung, 13. Mitteilung. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19530360419] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
87
|
Roth W, Erlenmeyer H. Über die tuberkulostatischen Eigenschaften der Hydrazide der Isonicotinsäure und der Benzoesäure. Metallionen und biologische Wirkung, 17. Mitteilung. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19540370111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
88
|
Hahn HV, Bäumler J, Roth W, Erlenmeyer H. Über Kupferkomplexe von Säureamiden und anderen Verbindungen. Metallionen und biologische Wirkung, 12. Mitteilung. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19530360105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
89
|
Zierhut M, Roth W, Dümmler S, Fischer I. Electronic spectroscopy of 1-naphthol/solvent clusters 1-NpOH/S, S=H2O, Ar and N2. Chem Phys 2004. [DOI: 10.1016/j.chemphys.2004.06.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
90
|
Niesner R, Roth W, Gericke KH. Photophysical Aspects of Single-Molecule Detection by Two-Photon Excitation with Consideration of Sequential Pulsed Illumination. Chemphyschem 2004. [DOI: 10.1002/cphc.200490041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
91
|
Roth W, Kermer P, Krajewska M, Welsh K, Davis S, Krajewski S, Reed JC. Bifunctional apoptosis inhibitor (BAR) protects neurons from diverse cell death pathways. Cell Death Differ 2004; 10:1178-87. [PMID: 14502241 DOI: 10.1038/sj.cdd.4401287] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The bifunctional apoptosis regulator (BAR) is a multidomain protein that was originally identified as an inhibitor of Bax-induced apoptosis. Immunoblot analysis of normal human tissues demonstrated high BAR expression in the brain, compared to low or absent expression in other organs. Immunohistochemical staining of human adult tissues revealed that the BAR protein is predominantly expressed by neurons in the central nervous system. Immunofluorescence microscopy indicated that BAR localizes mainly to the endoplasmic reticulum (ER) of cells. Overexpression of BAR in CSM 14.1 neuronal cells resulted in significant protection from a broad range of cell death stimuli, including agents that activate apoptotic pathways involving mitochondria, TNF-family death receptors, and ER stress. Downregulation of BAR by antisense oligonucleotides sensitized neuronal cells to induction of apoptosis. Moreover, the search for novel interaction partners of BAR identified several candidate proteins that might contribute to the regulation of neuronal apoptosis (HIP1, Hippi, and Bap31). Taken together, the expression pattern and functional data suggest that the BAR protein is involved in the regulation of neuronal survival.
Collapse
MESH Headings
- Adaptor Proteins, Signal Transducing
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal/pharmacology
- Apoptosis/drug effects
- Apoptosis/physiology
- Apoptosis Regulatory Proteins
- Arabidopsis Proteins/genetics
- Arabidopsis Proteins/metabolism
- Blotting, Western
- Brain Chemistry
- COS Cells
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Carrier Proteins/physiology
- Caspase 8
- Caspases/genetics
- Caspases/metabolism
- Cell Line
- Cell Line, Tumor/drug effects
- Cell Line, Tumor/metabolism
- Cell Survival/drug effects
- Cell Survival/physiology
- Chlorocebus aethiops
- Culture Media, Serum-Free/pharmacology
- DNA-Binding Proteins
- Down-Regulation
- Endoplasmic Reticulum/chemistry
- Fatty Acid Desaturases/genetics
- Fatty Acid Desaturases/metabolism
- Gene Expression Regulation
- Green Fluorescent Proteins
- Humans
- Immunohistochemistry
- Luminescent Proteins/genetics
- Luminescent Proteins/metabolism
- Male
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Membrane Proteins/physiology
- Microscopy, Fluorescence
- Molecular Sequence Data
- Nervous System/chemistry
- Neurons/physiology
- Oligodeoxyribonucleotides, Antisense/genetics
- Oligodeoxyribonucleotides, Antisense/metabolism
- Protein Binding
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins/metabolism
- Proto-Oncogene Proteins/physiology
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Rats
- Sequence Homology, Amino Acid
- Signal Transduction/physiology
- Staurosporine/pharmacology
- Thapsigargin/pharmacology
- Transfection
- Tumor Necrosis Factor-alpha/pharmacology
- fas Receptor/immunology
Collapse
|
92
|
|
93
|
Niesner R, Roth W, Gericke KH. Photophysical Aspects of Single-Molecule Detection by Two-Photon Excitation with Consideration of Sequential Pulsed Illumination. Chemphyschem 2004; 5:678-87. [PMID: 15179720 DOI: 10.1002/cphc.200300881] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An important goal in single molecule fluorescence correlation spectroscopy is the theoretical simulation of the fluorescence signal stemming from individual molecules and its autocorrelation function. The simulation approaches developed up to now are based exclusively on continuous-wave (cw) illumination and consequently on cw-excitation. However, this approximation is no longer valid in the case of two-photon excitation, for which pulsed illumination is usually employed. We present a novel theoretical model for the simulation of the fluorescence signal of single molecules and its autocorrelation function with consideration of the time dependence of the excitation flux and thus of all illumination-dependent photoprocesses: two-photon excitation, induced emission and photobleaching. Further important characteristics of our approach are the consideration of the dependence of the photobleaching rate on illumination and the low intersystem-crossing rates of the studied coumarins. Moreover, using our approach, we can predict quantitatively the effect of the laser pulse width on the fluorescence signal of a molecule, that is, the contributions of the photobleaching and saturation effects, and thus we can calculate the optimal laser pulse width. The theoretical autocorrelation functions were fitted to the experimental data, and we could ascertain a good agreement between the resulting and the expected parameters. The most important parameter is the photobleaching constant sigma, the cross section of the transition Sn<--S1, which characterises the photostability of the molecules independent of the experimental conditions. Its value is 1.7 x 10(-23) cm2 for coumarin 153 and 5 x 10(-23) cm2 for coumarin 314.
Collapse
|
94
|
Abstract
HISTORY AND CLINICAL FINDINGS A 78-year-old woman suffered from achalasia since 63 years with a progressive decompensation over the last year. 53 years ago, treatment with the Stark Dilator and 24 years ago, pneumatic dilation had been carried out. Currently, the patient presented with dysphagia for liquid and solid food, with permanent retrosternal pain and regurgitation for every meal, leading to a weight loss of 10 kg. INVESTIGATIONS The barium esophagogram showed a marked dilation of the esophagus with retinated secretions and food. The cardia had a maximum width of 15 mm. On endoscopy, reflux esophagitis and an insufficient lower esophageal sphincter were evident. TREATMENT AND COURSE Transhiatal esophageal resection with gastric pull-up and cervical esophagogastrostomy was performed. The postoperative course was without complications and normal alimentation could be restored with a marked improvement of preoperative symptoms. CONCLUSION Esophageal resection and gastric pull up is the more favourable treatment option in elderly patients with decompensated achalasia and dolichomegaesophagus compared to a gastric tube for alimentation--adjusted to the individual surgical risk.
Collapse
|
95
|
|
96
|
Zierhut M, Dümmler S, Roth W, Fischer I. Multiphoton ionization and zero kinetic energy photoelectron spectroscopy of the 1-naphthol(H2O) cluster. Chem Phys Lett 2003. [DOI: 10.1016/j.cplett.2003.09.094] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
97
|
Schlechtriemen T, Reeb R, Heib T, Schindler KH, Roth W, Altemeyer KH. Notfallmedizinisches Zentrum Saarbrücken. Notf Rett Med 2003. [DOI: 10.1007/s10049-002-0507-4] [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]
|
98
|
Gier H, Roth W, Schumm S, Gerhards M. Structures of 1,2,3-trihydroxybenzene in the S0 and S1 states. J Mol Struct 2002. [DOI: 10.1016/s0022-2860(01)00786-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
99
|
|
100
|
Roth W, Rahm C, Fraser BG. Probing and overcoming a mould menace. HEALTH ESTATE 2002; 56:50-1. [PMID: 12094779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Thorough investigation of an environmental problem within Brockville General Hospital, Ontario, Canada, was vital. This special report is by William Roth, Chris Rahm and Bruce G. Fraser--all of Jacques Whitford Environment Limited. William Roth is the first point of contact for Jacques Whitford's hospital clients and is a project manager within the Environmental Engineering group of JWEL's Ottawa office. Chris Rahm is a member of the Hazardous Materials group in JWEL's Ottawa office and was the site supervisor for the mould abatement at BGH. Bruce Fraser is the corporate technical director of indoor air quality for JWEL and regularly provides technical assistance for mould related projects carried out by JWEL.
Collapse
|