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Structural analysis of potato starch transformation during high-energy ball-milling: Oxygen and humidity content effects. Int J Biol Macromol 2024; 260:129579. [PMID: 38266852 DOI: 10.1016/j.ijbiomac.2024.129579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 11/28/2023] [Accepted: 01/16/2024] [Indexed: 01/26/2024]
Abstract
High Energy Ball-Milling (HEBM) modifies starchs' granule morphology, physicochemical properties, and chemical structure. However, understanding how the HEBM changes the starch chemical structure is necessary to control these modifications. Therefore, this study aimed to investigate the changes in potato starch's long- and short-range molecular order during HEBM at different environmental conditions such as oxygen (Air) and humidity content. Due to the correlation between the starch modification and the energy supplied (Esupp) by the HEBM, Burgio's equation was used to calculate this energy. The starch transformation was followed by X-ray diffraction, Fourier Transform-Infrared Spectroscopy, and Raman spectroscopy. A Principal Component Analysis (PCA) was conducted to reduce the HEBM variables. PAC analysis demonstrated that the different oxygen-humidity conditions do not affect the HEBM of potato starch. Based on the starch chemical structure transformation correlated with Esupp during HEBM, four stages were observed: orientation, modification, mechanolysis, and over-destruction. It was identified for the first time that at low milling energy (<1.5 kJ/g, orientation stage), the glycosidic rings change their orientation, and starch-water interaction increases while the starch's organization reduces. Ergo, the potato starch could be more susceptible to chemical modifications during the first two stages.
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Risk analysis of critical infrastructure with the MOSAR method. Heliyon 2024; 10:e26439. [PMID: 38404860 PMCID: PMC10884475 DOI: 10.1016/j.heliyon.2024.e26439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 02/09/2024] [Accepted: 02/13/2024] [Indexed: 02/27/2024] Open
Abstract
The smooth running of the electric energy system is crucial, especially given the current geopolitical environment. To achieve this goal, it is essential to establish a solid infrastructure that is both accessible and safe. We protect consumer reputation and trust, reduce financial losses, and lessen unfavourable effects on employees and business owners by maintaining continuous functioning. This study has discovered several important concerns using the Method Organised Systematic Analysis of Risk (MOSAR). These include the possibility of cyberattacks, the availability of information and technology systems, the loss of critical individuals, and network problems. To address these risks, it is necessary to deliver electrical energy on time and at a high standard, to be responsive to client requests, and to follow best practices, technical standards, and personal and environmental protection measures. The findings of this study make valuable contributions to risk assessment efforts, allowing us to identify potential threats to the security and reliability of national power systems. Overall, it is essential to maintain a robust and resilient energy infrastructure to ensure uninterrupted operation and mitigate risks effectively.
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1350 “TO BE A DEMENTIA-FRIENDLY HOSPITAL, I THINK YOU NEED TO HAVE…” - THE PERSPECTIVES OF PROFESSIONAL DEMENTIA EXPERTS. Age Ageing 2023. [DOI: 10.1093/ageing/afac322.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Abstract
Introduction
Dementia-friendly hospitals (DFH) are mentioned as one of several key initiatives in national dementia strategies. In our previous integrative review, we identified 17 descriptions of DFHs and analysed six characteristics of DFH: continuity, person-centredness, consideration of phenomena within dementia, environment, valuing relatives and knowledge and expertise within the hospital (Manietta, Purwins, Reinhard et al., BMC Geriatrics, 2022, 22, 468, 1-16). We also learned that the term DFH is based more on healthcare practice than research. To address this research gap, one step of our DEMfriendlyHospital study is to examine the perspectives of professional dementia experts working in hospitals in Germany.
Method
We used a qualitative design and conducted 14 semi-structured interviews with professional dementia experts from various healthcare professions (12 nurses, two physicians, and one physiotherapist). Data were collected between November 2021 and March 2022. Using an inductive content analysis, we furthermore analysed the interviews in a participatory way involving a group of research associates and professional dementia experts.
Results
From the professional dementia experts’ perspectives, a DFH is characterised by specific hospital processes, structures and environment which consider the needs of people with dementia, dementia-specific knowledge and the skills of hospital staff, their awareness and attitude towards people with dementia. A DFH needs the social inclusion of patients with dementia and their perception as a person as well as the involvement of relatives, who are an important support for the patients and their care.
Conclusion
There are links between our results from interviews with professional dementia experts and our integrative review. At the same time, the perspectives of patients with dementia and their relatives are underrepresented. To fill this gap, our next step is to interview people with dementia who are hospitalised and their relatives, aiming to enhance the description of a DFH and its characteristics.
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Abstract
Idiopathic pulmonary fibrosis (IPF) is a severe and often fatal disease. Diagnosis of IPF requires considerable expertise and experience. Since publication of the international IPF guideline in the year 2011 and Update 2018 several studies and technical advances occurred, which made a new assessment of the diagnostic process mandatory. In view of the antifibrotic drugs which have been approved for the treatment of IPF patients, the goal of this guideline is to foster early, confident and effective diagnosis of IPF. The guideline focusses on the typical clinical setting of an IPF patient and provides tools to exclude known causes of interstitial lung disease including standardised questionnaires, serologic testing and cellular analysis of bronchoalveolar lavage. High resolution computed tomography remains crucial in the diagnostic work-up. If it is necessary to obtain specimen for histology transbronchial lung cryobiopsy is the primary approach, while surgical lung biopsy is reserved for patients who are fit for it and in whom bronchoscopic diagnosis did not provide the information needed. Despite considerable progress, IPF remains a diagnosis of exclusion and multidisciplinary discussion remains the golden standard of diagnosis.
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[Immunophenotyping of lung tumors : An update]. DER PATHOLOGE 2019; 40:506-513. [PMID: 30937512 DOI: 10.1007/s00292-019-0589-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The WHO Classification of Lung Tumors (2015) established the use of immunohistochemical stainings for resection specimens, however, detailed recommendations had been missing. Now, an international expert panel has summarized key questions for daily routine practice and provided recommendations to assist the community in the appropriate use of immunohistochemistry in this context. This article provides an overview of the most important aspects.
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EBV+ CNS LYMPHOMAS HAVE A DISTINCTIVE TUMOR MICROENVIRONMENT AND GENETIC PROFILE, WHICH IS AMENABLE TO COMBINATION 3 RD
PARTY EBV-SPECIFIC CTL AND IBRUTINIB THERAPY. Hematol Oncol 2019. [DOI: 10.1002/hon.91_2629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Multi-experiment nonlinear mixed effect modeling of single-cell translation kinetics after transfection. NPJ Syst Biol Appl 2018; 5:1. [PMID: 30564456 PMCID: PMC6288153 DOI: 10.1038/s41540-018-0079-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 11/09/2018] [Indexed: 11/10/2022] Open
Abstract
Single-cell time-lapse studies have advanced the quantitative understanding of cellular pathways and their inherent cell-to-cell variability. However, parameters retrieved from individual experiments are model dependent and their estimation is limited, if based on solely one kind of experiment. Hence, methods to integrate data collected under different conditions are expected to improve model validation and information content. Here we present a multi-experiment nonlinear mixed effect modeling approach for mechanistic pathway models, which allows the integration of multiple single-cell perturbation experiments. We apply this approach to the translation of green fluorescent protein after transfection using a massively parallel read-out of micropatterned single-cell arrays. We demonstrate that the integration of data from perturbation experiments allows the robust reconstruction of cell-to-cell variability, i.e., parameter densities, while each individual experiment provides insufficient information. Indeed, we show that the integration of the datasets on the population level also improves the estimates for individual cells by breaking symmetries, although each of them is only measured in one experiment. Moreover, we confirmed that the suggested approach is robust with respect to batch effects across experimental replicates and can provide mechanistic insights into the nature of batch effects. We anticipate that the proposed multi-experiment nonlinear mixed effect modeling approach will serve as a basis for the analysis of cellular heterogeneity in single-cell dynamics.
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The association between the patient and the physician genders and the likelihood of intensive care unit admission in hospital with restricted ICU bed capacity. QJM 2018; 111:287-294. [PMID: 29385542 DOI: 10.1093/qjmed/hcy017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Despite the evidence that the patient gender is an important component in the intensive care unit (ICU) admission decision, the role of physician gender and the interaction between the two remain unclear. OBJECTIVE To investigate the association of both the patient and the physician gender with ICU admission rate of critically ill emergency department (ED) medical patients in a hospital with restricted ICU bed capacity operates with 'closed door' policy. METHODS A retrospective population-based cohort analysis. We included patients above 18 admitted to an ED resuscitation room (RR) of a tertiary hospital during 2011-12. Data on medical, laboratory and clinical characteristics were obtained. We used an adjusted multivariable logistic regression to analyze the association between both the patient and the physician gender to the ICU admission decision. RESULTS We included 831 RR admissions, 388 (46.7%) were female patients and 188 (22.6%) were treated by a female physicians. In adjusted multivariable analysis (adjusted for age, diabetes, mode of hospital transportation, first pH and patients who were treated with definitive airway and vasso-pressors in the RR), female-female combination (patient-physician, respectively) showed the lowest likelihood to be admitted to ICU (adjusted OR: 0.21; 95% CI: 0.09-0.51) compared to male-male combination, in addition to a smaller decrease among female-male (adjusted OR: 0.53; 95% CI: 0.32-0.86) and male-female (adjusted OR: 0.43; 95% CI: 0.21-0.89) combinations. CONCLUSION We demonstrated the existence of the possible gender bias where female gender of the patient and treating physician diminish the likelihood of the restricted health resource use.
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In vitro-Vergleich der antifibrotischen Effizienz des pan-HDAC-Inhibitors LBH589 mit dem IPF-Medikament Pirfenidon in Lungenfibroblasten von Patienten mit IPF. Pneumologie 2018. [DOI: 10.1055/s-0037-1619243] [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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Abstract
Summary
Objectives:
The choice of biomedical samples for microarray gene expression studies is decisive for both validity and interpretability of results. We present a consistent, comprehensive framework to deal with the typical selection problems in microarray studies.
Methods:
Microarray studies are designed either as case-control studies or as comparisons of parallel groups from cohort studies, since high levels of random variation in the experimental approach thwart absolute measurements of gene expression levels. Validity and results of gene expression studies heavily rely on the appropriate choice of these study groups. Therefore, the so-called principles of comparability, which are well known from both clinical and epidemiological studies, need to be applied to microarray experiments.
Results:
The principles of comparability are the study-base principle, the principle of deconfounding and the principle of comparable accuracy in measurements. We explain each of these principles, show how they apply to microarray experiments, and illustrate them with examples. The examples are chosen as to represent typical stumbling blocks of microarray experimental design, and to exemplify the benefits of implementing the principles of comparability in the setting of micro-array experiments.
Conclusions:
Microarray studies are closely related to classical study designs and therefore have to obey the same principles of comparability as these. Their validity should not be compromised by selection, confounding or information bias. The so-called study-base principle, calling for comparability and thorough definition of the compared cell populations, is the key principle for the choice of biomedical samples and controls in microarray studies.
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Abstract
Context: Attention deficit hyperactivity disorder (ADHD) is a common psychiatric condition in the general population, with evidence suggesting that it may be more common among athletes. Evidence Acquisition: Literature searches were performed on PubMed, MEDLINE, and Cochrane databases for the years 2000 to 2016 utilizing the following key search terms: ADHD, ADD, guidelines, diagnosis, athlete, sports, treatment, pharmacotherapy, stimulants, risk, cardiovascular effects, concussion, and traumatic brain injury (TBI). Study Design: Clinical review. Level of Evidence: Level 4. Results: ADHD exists among athletes at all levels of play, and symptomatology overlaps significantly with that of concussion. Treatment with stimulants has cardiovascular effects and may not be permitted by the athlete’s governing body. An athlete’s level of competition and individual cardiovascular risk factors may therefore affect medication choices. Conclusion: ADHD diagnosis and treatment are paramount to optimal quality of life and functioning in affected individuals. Pharmacologic treatment options should not specifically be avoided in athletes; however, stimulant use is an independent risk factor for heat illness. Concussion, a common athletic injury, may have an altered course in those affected by ADHD, specifically with regard to neurocognitive testing and recovery.
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Abstract
PURPOSE The objective of this systematic review was to summarise the outcome after cast wedging due to loss of angulation in conservative fracture treatment of children's fractures. METHODS Electronic searches were performed using MEDLINE, PubMed, OVID, CENTRAL and EMBASE without language restrictions. RESULTS Three studies comprising 316 patients (210 radius, 52 forearm/both bone forearm fractures and 54 tibia fractures) were included in the present analysis. Cast wedge failures occurred in 14 of 316 (4.4%) patients. Three patients (0.9%) needed surgical fixation and 11 patients (3.4%) ended up with a healed deformity. Furthermore, eight of 316 (1.8%) patients needed remanipulation and cast change. CONCLUSION Cast wedging reflects a reliable treatment option for secondary displaced long-bone paediatric fractures.
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524 Regional variation in epidermal susceptibility to ultraviolet induced carcinogenesis reflects proliferative activity of epidermal progenitors. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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A Multinational Analysis of Mutations and Heterogeneity in PZase, RpsA, and PanD Associated with Pyrazinamide Resistance in M/XDR Mycobacterium tuberculosis. Sci Rep 2017; 7:3790. [PMID: 28630430 PMCID: PMC5476565 DOI: 10.1038/s41598-017-03452-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 04/28/2017] [Indexed: 11/28/2022] Open
Abstract
Pyrazinamide (PZA) is an important first-line drug in all existing and new tuberculosis (TB) treatment regimens. PZA-resistance in M. tuberculosis is increasing, especially among M/XDR cases. Noted issues with PZA Drug Susceptibility Testing (DST) have driven the search for alternative tests. This study provides a comprehensive assessment of PZA molecular diagnostics in M/XDR TB cases. A set of 296, mostly XDR, clinical M. tuberculosis isolates from four countries were subjected to DST for eight drugs, confirmatory Wayne's assay, and whole-genome sequencing. Three genes implicated in PZA resistance, pncA, rpsA, and panD were investigated. Assuming all non-synonymous mutations cause resistance, we report 90% sensitivity and 65% specificity for a pncA-based molecular test. The addition of rpsA and panD potentially provides 2% increase in sensitivity. Molecular heterogeneity in pncA was associated with resistance and should be evaluated as a diagnostic tool. Mutations near the N-terminus and C-terminus of PZase were associated with East-Asian and Euro-American lineages, respectively. Finally, Euro-American isolates are most likely to have a wild-type PZase and escape molecular detection. Overall, the 8-10% resistance without markers may point to alternative mechanisms of resistance. Confirmatory mutagenesis may improve the disconcertingly low specificity but reduce sensitivity since not all mutations may cause resistance.
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[The new TNM classification for lung tumors : Changes and the assessment of multiple tumor foci]. DER PATHOLOGE 2017; 38:11-20. [PMID: 28154917 DOI: 10.1007/s00292-017-0268-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Recently a new TNM classification for tumors of the lung was published, encompassing some relevant changes, for example how to deal with multiple lung tumors. This article comprehensively describes respective changes. Furthermore, background information on how the new TNM classification was built and what should be done in the future to further improve prognosis and outcome prediction is reviewed.
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[Multifocal Pulmonary Neuroendocrine Tumours: Genesis, Diagnostics and Treatment]. Pneumologie 2016; 70:123-9. [PMID: 26894394 DOI: 10.1055/s-0041-110291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Multifocal neuroendocrine lung tumour is a rare diagnosis. Multiple lung foci of different sizes are usually apparent on chest CT scans. It is assumed that multifocal neuroendocrine lung tumours originally develop from diffuse idiopathic pulmonary neuroendocrine cell hyperplasia (DIPNECH). This results in cell aggregations formed by proliferation of neuroendocrine cells that are already physiologically present in the bronchial system. If these cell proliferations break through the bronchial basement membrane, they are considered to constitute tumourlets if they measure ≤ 5 mm and carcinoid tumours if they are larger than 5 mm. The speed of proliferation of the cell hyperplasias appears to vary. Many of the patients are completely asymptomatic, the multifocal neuroendocrine lung tumours being diagnosed by chance. However, other patients complain of breathlessness, reduced physical capacity and cough. There may also be reduction of lung function. In these cases, chest HRCT often reveals peribronchial fibrosis or bronchiectasis in addition to the lung foci. Bronchoscopy is usually not helpful. Surgical lung biopsy is considered to be the diagnostic gold standard. Histological examination typically shows a mixture of cell hyperplasias, tumourlets and carcinoid tumours. There is no consensus on the treatment of multifocal neuroendocrine tumours. Taking the clinical situation and the chest HRCT findings as our starting point, we developed a stepwise approach that is guided by the success of the individual therapeutic procedures. The most favourable prognosis is found in affected people without clinical symptoms whose lung foci all measure less than 5 mm. In these cases the 5-year survival rate is over 90%.
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Inhibition of profibrotic signaling in fibroblasts from patients with IPF by the pan-histone deacetylase-inhibitor LBH589 or the IPF drug pirfenidone. Pneumologie 2015. [DOI: 10.1055/s-0035-1556650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Immune and Inflammatory Cell Composition of Human Lung Cancer Stroma. Pneumologie 2015. [DOI: 10.1055/s-0035-1544728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Customer focus competencies and the dynamics of project teams. TOTAL QUALITY MANAGEMENT & BUSINESS EXCELLENCE 2014. [DOI: 10.1080/14783363.2014.970876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Thymolipom – eine seltene Ursache für Fieber. Zentralbl Chir 2014. [DOI: 10.1055/s-0034-1389321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Aberrant expression and activity of histone deacetylases (HDAC) in lungs of patients with sporadic idiopathic pulmonary fibrosis (IPF). Pneumologie 2014. [DOI: 10.1055/s-0034-1376797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Inhibition of profibrotic signaling in fibroblasts from patients with idiopathic pulmonary fibrosis by histone deacetylase-inhibitors or pirfenidone. Pneumologie 2014. [DOI: 10.1055/s-0034-1376798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ein seltener Fall einer in Arizona (USA) häufigen Erkrankung. Pneumologie 2014. [DOI: 10.1055/s-0034-1367855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Aberrante Expression und Aktivität von Histon-Deacetylasen (HDAC) in Idiopathic Pulmonary Fibrosis (IPF). Pneumologie 2014. [DOI: 10.1055/s-0033-1363115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Inhibierung von pro-fibrotischen Signalwegen in Fibroblasten von Patienten mit sporadischer Idiopathischer Pulmonaler Fibrose (IPF) durch Histondeacetylase-Inhibitoren (HDACi). Pneumologie 2014. [DOI: 10.1055/s-0033-1363114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Recent results in PDF calculations using a Stoe STADI P with Ag Kα 1radiation and a Dectris MYTHEN 1K detector. Acta Crystallogr A 2013. [DOI: 10.1107/s0108767313095056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Regulation and localization of the Telomerase- and the Shelterin-telosom-complex in sporadic Idiopathic Pulmonary Fibrosis. Pneumologie 2012. [DOI: 10.1055/s-0032-1315512] [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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Hypoxia-induced changes in expression levels of miR-210, -183 and -744 in human lung fibroblasts. Pneumologie 2012. [DOI: 10.1055/s-0032-1315522] [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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Aberrant expression and activity of histone deacetylases (HDACs) in lungs of patients with sporadic Idiopathic Pulmonary Fibrosis (IPF). Pneumologie 2012. [DOI: 10.1055/s-0032-1315513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Pair-distribution function analyses of nanocrystalline organic pigments. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311091914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Treprostinil inhibits the recruitment of bone marrow-derived circulating fibrocytes in chronic hypoxic pulmonary hypertension. Eur Respir J 2010; 36:1302-14. [DOI: 10.1183/09031936.00028009] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Identifizierung und Charakterisierung von möglichen Biomarkern bei der Idiopathischen Pulmonalen Fibrose (IPF) mittels komparativer Proteomanalyse. Pneumologie 2010. [DOI: 10.1055/s-0030-1251105] [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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Identifizierung und Charakterisierung von möglichen Biomarkern bei der Idiopathischen Pulmonalen Fibrose (IPF) mittels komparativer Proteomanalyse. Pneumologie 2010. [DOI: 10.1055/s-0029-1247929] [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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Abstract
Although increasing numbers of patients suffer from chronic destructive lung diseases, there are no effective therapeutic options apart from transplantation. Understanding the mechanisms of physiological and regenerative alveolar septation is prerequisite for the development of regenerative therapies for the lung. We compared lung gene expression in the phase of induction of post-natal and post-pneumonectomy alveolarisation to identify regulatory genes involved in both processes. We performed genome-wide microarray screenings of newborn and pneumonectomised mouse lungs 1 and 3 days after birth or surgery. Selected candidates were validated by real-time PCR, Western blot and in situ hybridisation. We found 58 genes to be regulated in both models with 40 candidates being changed likewise. Many of these genes participated in growth and differentiation processes. Additionally, immune system, structural molecules, respiratory chain, signal transduction and metabolism were involved. Some candidates were not yet linked to specific functions. The highest regulatory concordance was observed for various isoforms of (pro-)collagen molecules, elastin and the elastin-associated protein fibrillin1 being corporately upregulated. Our findings do not definitively support a common regulating mechanism for induction of post-natal and adult alveolarisation, but some candidates in the intersection of both models are promising for further investigations.
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Effect of endotoxin on COX-2 dependent proliferation of NSCLC cells: Role of CD14, TLRs, and EGFR signaling. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e22190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e22190 Background: Bacterial infections are common in NSCLC and growing evidence indicates that inflammation is contributing to cancer growth. Against this background, we investigated the effect of the bacterial cell wall components LPS on the proliferation of the NSCLC cell line A549. Methods: Proliferation of A549 cells was quantified by MTS-assay. PGE2 production was analyzed by ELISA and COX-2 mRNA was quantified by RT-PCR. Results: Incubation of A549 cells with LPS induced a time- and dose-dependent proliferation of A549 cells. Pro-proliferative effects of endotoxin could be inhibited by neutralizing antibodies targeting CD14 and TLR4, but not by inhibition of TLR2. Interestingly, interference with COX-2 activity by the specific inhibitor NS-398 strongly attenuated the LPS-induced tumor cell proliferation. In parallel, large amounts of COX-2 dependent PGE2were released by LPS-stimulated A549 cells. Moreover, enhanced transcription of COX-2 specific mRNA was detected in LPS-stimulated A549 cells. Interestingly, EGFR signaling was obviously involved in LPS-induced tumor cell proliferation and PGE2 release, as both effects could be inhibited by the neutralizing EGFR-antibody cetuximab. Conclusions: We conclude that LPS induces COX-2 dependent proliferation of A549 cells in a CD14, TLR4, and EGFR dependant manner. These effects might contribute to pathogen induced tumor proliferation in NSCLC. No significant financial relationships to disclose.
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Catabolic properties of microdissected human endosteal bone lining cells. Calcif Tissue Int 2009; 84:146-55. [PMID: 19139801 DOI: 10.1007/s00223-008-9213-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Accepted: 12/18/2008] [Indexed: 12/29/2022]
Abstract
Bone lining cells cover > 80% of endosteal surfaces of human cancellous bone. Current research assigns to them a dual role: (1) as a biological membrane regulating exchange of substrates between the bone fluid compartment and the extracellular fluid of bone marrow and (2) as a signaling link between the osteocytic network as mechanical receptor and the osteoclastic cell pool for local induction of bone resorption. Furthermore, a catabolic role has been considered. We therefore examined the presence of matrix-metalloproteinases (MMPs) and their physiological tissue inhibitors (TIMPs) as putative proteolytic elements. Firstly, human cancellous bone from 60 patients was examined by immunofluorescence with antibodies against MMPs and TIMPs. Secondly, we applied laser-assisted microdissection (LMD) to isolate bone lining cells from frozen sections of human trabecular bone. mRNA analysis was performed using a single-cell PCR protocol. Three laser microdissection systems were tested: the new generation of Leica LMD and P.A.L.M. laser pressure catapulting (LPC) were compared to P.A.L.M. laser microdissection and micromanipulation (LMM). In a few pooled cell profiles, mRNA of MMP13, MMP14, TIMP1, and CBFA-1 was clearly detected. By immunofluorescence MMP13 and -14 as well as TIMP1 and -2 were strongly present in lining cells, while MMP2, TIMP3, and TIMP4 showed weak or negative signals. Although the functional impact of these enzymatic components remains open, there is additional evidence for a catabolic function of lining cells. The new diode-laser microdissection with LMD and LPC proved to be especially suitable to gain new insights into the properties of bone lining cells.
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Suche nach weitgehend unbekannten, an der Alveolarisierung beteiligten Genen. Pneumologie 2009. [DOI: 10.1055/s-0029-1202466] [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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Isolation und Charakterisierung pulmonaler Lipofibroblasten. Pneumologie 2009. [DOI: 10.1055/s-0029-1202463] [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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Astrocyte-specific neurofibromatosis 1 gene deletion is insufficient for astrocytoma formation in mice. J Neurochem 2008. [DOI: 10.1046/j.1471-4159.81.s1.48_4.x] [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]
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Hemostatic effects of bortezomib treatment in patients with relapsed or refractory multiple myeloma. Haematologica 2008; 93:953-4. [DOI: 10.3324/haematol.12522] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Nanohale – Nicht-virale Vektoren für den pulmonalen Gentransfer. Pneumologie 2008. [DOI: 10.1055/s-2008-1074268] [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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LPS aktiviert die PGE2-Synthese in humanen Lungenadenokarzinomzellen – Rolle von CD14 und EGF-Rezeptor-Crosslinking. Pneumologie 2008. [DOI: 10.1055/s-2008-1074247] [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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Bakterielle Endo- und Exotoxine aktivieren die Zytokinsynthese isolierter Bronchialkarzinomzellen – Amplifikation durch Neutrophile Granulozyten. Pneumologie 2008. [DOI: 10.1055/s-2008-1074248] [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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WISP1: A novel regulator of idiopathic pulmonary fibrosis amenable to therapeutic intervention. Pneumologie 2007. [DOI: 10.1055/s-2007-1032272] [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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