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Jenzer H, Sadeghi L, Krause C, Pfister F, Stute P, Stanga Z. Behind CYP450 interaction tables ñ the effect of gender and age on pharmacokinetics. Eur J Hosp Pharm 2012. [DOI: 10.1136/ejhpharm-2012-000074.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Somppi S, Törnqvist H, Hänninen L, Krause C, Vainio O. Dogs do look at images: eye tracking in canine cognition research. Anim Cogn 2012; 15:163-174. [PMID: 21861109 DOI: 10.1007/s10071-011-0442-1/figures/7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 07/06/2011] [Accepted: 08/01/2011] [Indexed: 05/26/2023]
Abstract
Despite intense research on the visual communication of domestic dogs, their cognitive capacities have not yet been explored by eye tracking. The aim of the current study was to expand knowledge on the visual cognition of dogs using contact-free eye movement tracking under conditions where social cueing and associative learning were ruled out. We examined whether dogs spontaneously look at actual objects within pictures and can differentiate between pictures according to their novelty or categorical information content. Eye movements of six domestic dogs were tracked during presentation of digital color images of human faces, dog faces, toys, and alphabetic characters. We found that dogs focused their attention on the informative regions of the images without any task-specific pre-training and their gazing behavior depended on the image category. Dogs preferred the facial images of conspecifics over other categories and fixated on a familiar image longer than on novel stimuli regardless of the category. Dogs' attraction to conspecifics over human faces and inanimate objects might reflect their natural interest, but further studies are needed to establish whether dogs possess picture object recognition. Contact-free eye movement tracking is a promising method for the broader exploration of processes underlying special socio-cognitive skills in dogs previously found in behavioral studies.
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Krause C, Cochrane D. BC Patient Safety & Quality Council: using network and social movement theory to improve healthcare. Healthc Manage Forum 2012; 25:181-184. [PMID: 23387135 DOI: 10.1016/j.hcmf.2012.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The BC Patient Safety & Quality Council has a mandate to bring health system stakeholders together in a collaborative partnership to improve quality of care. Our experience has demonstrated the value of networks to provide a forum for individuals to "think like a system," considering the perspectives of others in addressing system issues. This transition from silo-based thinking is important as we move to improve the quality of care at the pace that is required.
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Krause C. Developing sense of coherence in educational contexts: making progress in promoting mental health in children. Int Rev Psychiatry 2011; 23:525-32. [PMID: 22272590 DOI: 10.3109/09540261.2011.637907] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The notion of salutogenesis was developed by Aaron Antonovsky to achieve a fundamental innovative approach to promoting mental health. Within the concept of salutogenesis, the author defined the sense of coherence (SOC) as a global life orientation, and he suggests that it emerges in the early years of childhood. In order to develop coherence and its components it is necessary to explore certain health resources. In this paper the following questions will be discussed: (1) which are the individual and social resources to keep healthy, and (2) how can these resources be activated? Selected empirical findings will be presented to respond to these research questions. The results show that resources such as self-worth and a sense of belonging are fundamental health factors. They can be developed most effectively in the early years of childhood and through the formal educational system, e.g. in kindergartens and primary schools. However, the findings show that professionals need to be trained to be able to deliver educational programmes in terms of salutogenesis. At the same time, experience shows that promoting health resources in children successfully depends on the participation of the parents and their support by the professional educators. This paper aims to present new ideas and experiences in the area of a practical realization of the concept of salutogenesis in educational systems. Particularly, health promotion programmes, for example 'The I am I programme' ( Krause, 2009 ), could be implemented successfully in kindergartens with a high quota of children with an immigrant background, due to the fact that this programme includes the reflection and experience of cultural traditions, food, songs, dancing, and family rituals.
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Mayer CH, Krause C. Promoting mental health and salutogenesis in transcultural organizational and work contexts. Int Rev Psychiatry 2011; 23:495-500. [PMID: 22272586 DOI: 10.3109/09540261.2011.636549] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Santoro R, Krause C, Martin I, Wendt D. On-line monitoring of oxygen as a non-destructive method to quantify cells in engineered 3D tissue constructs. J Tissue Eng Regen Med 2011; 6:696-701. [PMID: 21932277 DOI: 10.1002/term.473] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 06/06/2011] [Accepted: 07/05/2011] [Indexed: 11/05/2022]
Abstract
Regulatory guidelines have established the importance of introducing quantitative quality controls during the production and/or at the time of release of cellular grafts for clinical applications. In this study we aimed to determine whether on-line measurements of oxygen can be used as a non-destructive method to estimate the number of chondrocytes within an engineered cartilage graft. Human chondrocytes were seeded and cultured in a perfusion bioreactor, and oxygen levels in the culture medium were continuously monitored at the inlet and outlet of the bioreactor chamber throughout the culture period. We found that the drop in oxygen across the perfused construct was linearly correlated with the number of cells per construct (R(2) = 0.82, p < 0.0001). The method was valid for a wide range of cell numbers, including cell densities currently used in the manufacture of cartilage grafts for clinical applications. Given that few or no non-destructive assays that quantitatively characterize an engineered construct currently exist, this non-invasive method could represent a relevant instrument in regulatory compliant manufacturing of engineered grafts meeting specific quality criteria.
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Grott M, Knollenberg J, Krause C. Apollo lunar heat flow experiment revisited: A critical reassessment of the in situ thermal conductivity determination. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010je003612] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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58
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Wilhelm D, Gysen K, Himmelmann A, Krause C, Wilhelm KP. Short-term effect of a new mouthrinse formulation on oral malodour after single use
in vivo
: a comparative, randomized, single-blind, parallel-group clinical study. J Breath Res 2010; 4:036002. [DOI: 10.1088/1752-7155/4/3/036002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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59
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Krahé B, Krause C. Presenting Thin Media Models Affects Women'S Choice of Diet or Normal Snacks. PSYCHOLOGY OF WOMEN QUARTERLY 2010. [DOI: 10.1111/j.1471-6402.2010.01580.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Our study explored the influence of thin- versus normal-size media models and of self-reported restrained eating behavior on women's observed snacking behavior. Fifty female undergraduates saw a set of advertisements for beauty products showing either thin or computer-altered normal-size female models, allegedly as part of a study on effective advertising. After rating the advertisements, they were offered a choice of snacks that came either in a normal or a diet variant. Habitual tendency to show restrained eating behavior was measured as an individual difference variable. Above and beyond body mass index, significantly more women chose the diet snack in the thin-model condition than in the normal-size model condition. The model main effect was moderated by habitual restrained eating. In the normal-size model condition, the more women reported restrained eating, the more likely they were to choose the diet snack. By contrast, women in the thin-model group were more likely to choose the diet snack regardless of individual differences in habitual restrained eating. The findings show that in the present sample of White college women the impact of body images pressures was pervasive, affecting some women by encouraging habitual restrained eating and even less restrained eaters through their exposure to published images of thin models.
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Feser K, Kietzmann M, Bäumer W, Krause C, Bach F. Effects of Degradable Mg-Ca Alloys on Dendritic Cell Function. J Biomater Appl 2010; 25:685-97. [DOI: 10.1177/0885328209360424] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Degradable magnesium alloys are new materials for implants used in orthopedic and trauma surgery. The aim of this study was to investigate the influence of degradable magnesium alloys on the function of dendritic cells (DC) as these cells represent the major antigen presenting cells of the body. MgP (pure magnesium), MgCa 0.6 (0.6% calcium), MgCa 0.8 (0.8% calcium), MgCa 1.0 (1% calcium), and MgCa 1.2 (1.2% calcium) alloys were degraded in cell culture medium. In parallel, murine bone marrow-derived DC were incubated with increasing concentrations (0.1—10 mmol/L) of magnesium chloride and calcium chloride, respectively. Incubation of DC with degradation media over 6 days had no influence on cell viability and only marginal influence on DC migration. Also, the production of TNFα and expression of CD86 was not enhanced by incubation with degraded magnesium alloys. The mixed leukocyte reaction revealed that there was also no increase of the T-cell proliferation in comparison to untreated controls. However, there was a trend toward macrophage development at the expense of DC expansion and an enhanced DC migration was induced by incubation with higher magnesium concentrations. Particularly the latter should be verified in in vivo experiments.
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Krause C, Sangoro JR, Iacob C, Kremer F. Charge Transport and Dipolar Relaxations in Imidazolium-Based Ionic Liquids. J Phys Chem B 2009; 114:382-6. [DOI: 10.1021/jp908519u] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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62
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Langenbach M, Krause C, Subic-Wrana C. Subjektives Erleben von stationärer Psychotherapie–Qualitative Analyse katamnestischer Patienteninterviews. Psychother Psychosom Med Psychol 2009. [DOI: 10.1055/s-0029-1208194] [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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63
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Krause C, Klüttermann K, Mauz-Körholz C. Molecular mechanisms and gene regulation of melphalan- and hyperthermia-induced apoptosis in Ewing sarcoma cells. Anticancer Res 2008; 28:2585-2593. [PMID: 19035282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The prognosis of high-risk Ewing tumours (HR-ET) remains poor. Melphalan-containing chemotherapy regimens are commonly applied for HR-ET patients. Moreover, melphalan (Mel) is a promising agent in thermochemotherapy. Therefore, we investigated the single effects, the synergism and the gene regulation of Mel and hyperthermia (HT) in an ET cell line (RD-ES). Dose-dependent cytotoxicity by Mel was demonstrated, which was enhanced by the concomitant application of HT (42 degrees C for 2 h). Mel, HT and their combination caused a significant activation of caspase-3. Using the pan-caspase inhibitor z-VAD-fmk, we demonstrated that both stimuli mediated predominantly caspase-dependent cytotoxicity. With cDNA array analysis, 20 out of 198 apoptosis-related genes were identified to be differentially expressed by Mel and/or HT. Although a significant enhancement of three selected genes could not be proven at the protein level in subsequent experiments, this study gives insight into the complex molecular and genetic response of tumour cells to cytotoxic stimulation.
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MESH Headings
- 4-1BB Ligand/antagonists & inhibitors
- 4-1BB Ligand/metabolism
- Antineoplastic Agents, Alkylating/pharmacology
- Apoptosis/drug effects
- Apoptosis/genetics
- Apoptosis/physiology
- Apoptosis Regulatory Proteins/antagonists & inhibitors
- Apoptosis Regulatory Proteins/biosynthesis
- Apoptosis Regulatory Proteins/genetics
- Caspase 3/metabolism
- Cell Line, Tumor
- Combined Modality Therapy
- Dose-Response Relationship, Drug
- Enzyme Activation
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Hyperthermia, Induced
- Male
- Melphalan/pharmacology
- Protein Serine-Threonine Kinases/antagonists & inhibitors
- Protein Serine-Threonine Kinases/biosynthesis
- Protein Serine-Threonine Kinases/genetics
- Receptors, TNF-Related Apoptosis-Inducing Ligand/antagonists & inhibitors
- Receptors, TNF-Related Apoptosis-Inducing Ligand/biosynthesis
- Receptors, TNF-Related Apoptosis-Inducing Ligand/genetics
- Sarcoma, Ewing/genetics
- Sarcoma, Ewing/pathology
- Sarcoma, Ewing/therapy
- Tumor Necrosis Factor Receptor Superfamily, Member 9/antagonists & inhibitors
- Tumor Necrosis Factor Receptor Superfamily, Member 9/metabolism
- Young Adult
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Liersch S, Henze V, Bisson S, Krauth C, Röbl M, Krause C, Walter U. Veränderung der gesundheitsbezogenen Lebensqualität sowie des Gewaltverhaltens durch täglichen Schulsport in der Grundschule – das Projekt „fit für pisa“. DAS GESUNDHEITSWESEN 2008. [DOI: 10.1055/s-0028-1086415] [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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65
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Arain S, John G, Krause C. Ensuring defined oxygen levels in stem cell cultivation - a novel approach using DO online monitoring in multiwell plates. J Stem Cells Regen Med 2007; 2:154. [PMID: 24692967] [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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66
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Mannessier L, Delamaire M, Bouix O, Krause C, Roubinet F. [Validation of antibody screening by indirect antigloblin test and ABO blood typing by filtration and microplate techniques: assessment of robustness]. Transfus Clin Biol 2006; 13:271-7. [PMID: 16997595 DOI: 10.1016/j.tracli.2006.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2005] [Accepted: 07/28/2006] [Indexed: 10/24/2022]
Abstract
According to requirements of the French Committee for Accreditation (Cofrac), it is essential to use validated and standardised methods in Immunohematology. This imposes first the knowledge of metrological tolerances for all the technics. Two multicenter studies were carried out to define the maximal acceptable deviations concerning incubation temperature and time, volumes of patient plasma and tests cells for antibody screening using indirect antiglobulin test on one hand and for reverse grouping on another hand. All equipment used (temperature test chamber, chronometer, pipettes) were calibrated according to Cofrac standards. The antibody screenings were performed manually using 3 different filtration systems: ID Diamed, Biovue Ortho and Scangel Biorad, the same tests cells, a standard 20 ng/mL anti RH1, a positive control anti KEL1 and a negative control; the reverse blood grouping was performed manually using the above mentionned filtration systems and microplate technic with the same A1 and B test cells. These two studies showed that all the tests from the multiples combinations of the above parameters gave the same results and allowed us to define a range of tolerance for 4 critical physical parameters involved in the antibody screening and blood typing.
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Kusterer A, Kaufmann K, Krause C, Arnold M, Weuster-Botz D. Automation of Disposable Stirred-Tank Bioreactors. CHEM-ING-TECH 2006. [DOI: 10.1002/cite.200650167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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68
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Krause C, Kirschbaum J, Brückner H. Peptaibiomics: an advanced, rapid and selective analysis of peptaibiotics/peptaibols by SPE/LC-ES-MS. Amino Acids 2006; 30:435-43. [PMID: 16622603 DOI: 10.1007/s00726-005-0275-9] [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] [Received: 08/05/2005] [Accepted: 10/01/2005] [Indexed: 10/24/2022]
Abstract
"Proteomics" and "peptidomics" are used as technical terms to define the analysis and study of all proteins and peptides expressed in an organism or tissue. In analogy we propose the name peptaibiomics for the analysis of a group of fungal peptide antibiotics (peptaibiotics) containing the characteristic amino acid Aib (alpha-aminoisobutyric acid). In analogy to the peptidome the complete expression of peptaibiotics by fungal multienzyme complexes should be named the peptaibiome. Peptaibiotics are defined as peptides containing Aib and exerting a variety of bioactivities. They comprise the sub-groups of N-acetylated peptaibols, characterized also by a C-terminal amide-linked 2-amino alcohol, and lipopeptaibols having in place of an acetyl group a lipophilic fatty acid acyl group. Furthermore, lipoaminopeptides are also known with long-chain fatty acid on the N-termini, a lipoamino acid in position three and a strongly basic secondary or tertiary amine form a subgroup of mixed forms which could not be integrated in one of these three previously mentioned groups. Here we present a specific and rapid screening method on the peptaibiome applicable directly onto filamentous fungi cultured in a single Petri dish. The method comprises solid-phase extraction (SPE) of peptaibiotics followed by on-line reversed-phase HPLC coupled to an ion trap electrospray tandem mass spectrometer (ES-MS). The presence of these peptides is indicated by characteristic mass differences of Deltam = 85.1 Da representing Aib-residues which can be observed in the b-series of acylium fragment ions resulting from ES-MS. Partial sequences can be deduced from the data and compared with structures compiled in electronic peptaibol data bases. The judgement is possible whether or not structures are novel, already known or related to known structures. Suitability of the method is demonstrated with the analysis of strains of Trichoderma and its teleomorph Hypocrea. New sequences of peptaibiotics are presented and those being related to established 10- to 18-residue peptaibols trichovirin, trichogin and trichotoxin, which have been described in the literature.
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69
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Klüttermann K, Banning U, Kachel M, Krause C, Körholz D, Mauz-Körholz C. TRAIL-induced cytotoxicity in a melphalan-resistant rhabdomyosarcoma cell line via activation of caspase-2. Anticancer Res 2006; 26:351-6. [PMID: 16475717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The prognosis for patients with chemo-refractory rhabdomyosarcoma remains poor. The tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) is a hopeful candidate for new strategies in chemotherapy. The effects of TRAIL and melphalan (Mel) in the rhabdomyosarcoma cell line TE-671 were investigated by colorimetric caspase assays and flow cytometry. TRAIL induced the activation of caspases-2, -3 and -8, but not the activation of caspase-9, in the Mel-resistant TE-671 cells. Inhibition of caspase-2 with the caspase-2 inhibitor z-VDVAD-fmk significantly down-regulated the TRAIL-induced caspase-3 activation, as well as the TRAIL-induced cytotoxicity. When TE-671 cells were treated with a combination of Mel and TRAIL, a significant synergism of drug-induced cytotoxicity was obtained. The inhibition of caspase-2 could completely abolish caspase-3 activation, suggesting that TRAIL sensitises TE-671 cells for Mel-induced cytotoxicity via a caspase-2- and -3-dependent mechanism. In conclusion, it was shown, for the first time, that TRAIL could sensitise Mel-resistant tumour cells to melphalan.
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Fritscher-Ravens A, Knoefel WT, Krause C, Swain CP, Brandt L, Patel K. Three-dimensional linear endoscopic ultrasound-feasibility of a novel technique applied for the detection of vessel involvement of pancreatic masses. Am J Gastroenterol 2005; 100:1296-302. [PMID: 15929760 DOI: 10.1111/j.1572-0241.2005.41681.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Endoscopic ultrasound (EUS) can reliably diagnose and stage pancreatic cancer but is less competent for the differentiation between vascular compression (VC) and invasion (VI). AIM Prospective comparison of linear EUS with/without three-dimensional (3D) EUS for vessel involvement in pancreatic cancer to evaluate the feasibility of linear 3D ultrasound. MATERIAL AND METHODS Linear echoendoscopy was used to identify the pancreatic tumor, the tumor-vessel relation and for EUS-FNA to obtain tissue diagnosis. Immediately afterwards, 3D image acquisition was performed using a magnetic tracked 3D sensor. The acquisition time was 10-20 s. RESULTS EUS results of 22 patients with solid pancreatic lesions were compared to surgical histology. This proved adenocarcinoma in 17 patients and chronic pancreatitis in 5. EUS showed VI in 10 patients, VC in 6, and no vascular involvement (NVI) in 6. Additional 3D evaluation showed VI in 6 patients, VC in 10, and NVI in 6. Surgery proved VI in 7 patients, VC in 9, and NVI in 6. EUS showed VI in 3/5 patients with chronic pancreatitis, 3D showed VC only, while surgery found two patients to have VC and with NVI. In two patients with pancreatic cancer, VI was diagnosed on two dimensional (2D), but VC on 3D evaluation. Surgery showed VC and VI in one each. In the 2D, one patient with NVI had VI on surgery; and on 3D one VC proved to have NVI at surgery. In 1/22 patients the result of 3D was false negative, while 4/22 were false positives and one false negative in conventional EUS. CONCLUSION Linear 3D EUS seems feasible for pancreatic evaluation. In addition, linear EUS enhanced the evaluation of vascular involvement of pancreatic lesions, especially in chronic pancreatitis.
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Subic-Wrana C, Degbe V, Haas C, Krause C, Paulussen M. Unterscheidet sich die Mentalisierungsfähigkeit somatoform gestörter Patienten von der gesunder Kontrollen? - Erste Anwendung eines durch Computeranimation gestützten ToM-Tests im deutschen Sprachraum. Psychother Psychosom Med Psychol 2005. [DOI: 10.1055/s-2005-863568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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72
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Krause C, Klüttermann K, Banning U, Körholz D, Mauz-Körholz C. Characterisation of apoptosis inductor and suppressor genes in thermochemotherapy treated Ewing tumor cells. KLINISCHE PADIATRIE 2004. [DOI: 10.1055/s-2004-828579] [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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73
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Fingelkurts A, Fingelkurts A, Krause C, Kaplan A, Borisov S, Sams M. Structural (operational) synchrony of EEG alpha activity during an auditory memory task. Neuroimage 2003; 20:529-42. [PMID: 14527613 DOI: 10.1016/s1053-8119(03)00305-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Memory paradigms are often used in psycho-physiological experiments in order to understand the neural basis underlying cognitive processes. One of the fundamental problems encountered in memory research is how specific and complementary cortical structures interact with each other during episodic encoding and retrieval. A key aspect of the research described below was estimating the coupling of rapid transition processes (in terms of EEG description) which occur in separate cortical areas rather than estimating the routine phase-frequency synchrony in terms of correlation and coherency. It is assumed that these rapid transition processes in the EEG amplitude correspond to the "switching on/off" of brain elemental operations. By making a quantitative estimate of the EEG structural synchrony of alpha-band power between different EEG channels, it was shown that short-term memory has the emergent property of a multiregional neuronal network, and is not the product of strictly hierarchical processing based on convergence through association regions. Moreover, it was demonstrated that the dynamic temporal structure of alpha activity is strongly correlated to the dynamic structure of working memory.
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75
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Pierer M, Krause C, Häntzschel H. [Extra-intestinal Manifestations of chronic inflammatory Bowel diseases]. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2002; 40 Suppl 1:S92-S4. [PMID: 11930300 DOI: 10.1055/s-2002-23621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Approximately one third of all patients with Crohn's disease and ulcerative colitis suffer from extra-intestinal manifestations of their inflammatory bowel disease. Most commonly those symptoms occur simultaneously with the CED symptoms; they can, however, either precede them or appear later on in the course of the disease. The most frequent extra-intestinal symptoms are arthralgias of peripheral joints and spine, which are usually bland and self-limiting, while ankylosing spondylitis and erosive arthritides are rare. Skin lesion and eye affections can also parallel the bowel condition, but occasionally they precede intestinal manifestations and can be a first diagnostic clue. In addition, different extra-intestinal symptoms tend to simultaneously co-occur more frequently in some patients with CED, while others are not affected at all. Immunogenetic parameters play a role for the manifestations of the pathologic immune response both in the gut and in the musculo-skeletal systems, as indicated by associations with MHC class I alleles. Enteropathic microorganisms are also thought to be involved in the pathogenetic mechanisms.
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