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In dem folgenden werkgenetischen und forschungskritischen Beitrag geht es um das sonderbare und revisionsbedürftige Schicksal, das eine von Mozart nach dessen Rückkehr aus Mannheim in Salzburg ohne Auftrag begonnene und bis Sommer 1780 fast vollendete Oper durch ihre Rezeption bei der Nachwelt bis heute erlitten hat. Für meine Hypothese, bei Mozarts Zaïde handele es sich um eine ernste (nicht-komische), höchstwahrscheinlich einaktig konzipierte Kurzoper ("Operette", W. A. M.) ohne glücklichen Ausgang, ist es ebenso unmöglich, einen "Nachweis" zu erbringen, wie für die bisher geltende, als einzig denkbare Wahrheit auftretende These, sie sei ein stark fragmentarisches, höchstwahrscheinlich dreiaktiges Singspiel, dem nicht nur die Ouvertüre und die meisten Dialoge fehlten, sondern auch die entweder in mehreren fehlenden Schlussnummern eines zweiten oder in einem dritten Akt sich vollziehen sollende glückliche Wende. Darum wird hier nicht versucht, gegen eine bestehende beanspruchte "Deutungshoheit" eine andere zu setzen, sondern lediglich angezeigt und begründet, warum es ratsam ist, eine andere Interpretationsmöglichkeit bekannter Quellen, von denen einige bisher berücksichtigt, andere vernachlässigt wurden, ins Auge zu fassen. Es kann lediglich anhand von Indizien, welche die Quellen und Teile der bisherigen Forschung aufweisen, eine neue, bisher verworfene Möglichkeit von dem über sie verhängten Verdikt befreit werden. ...
Background: Bacterial meningitis is associated with high mortality and long-term neurological sequelae. Increasing the phagocytic activity of microglia could improve the resistance of the CNS against infections. We studied the influence of activin A, a member of the TGF-β family with known immunoregulatory and neuroprotective effects, on the functions of microglial cells in vitro.
Methods: Primary murine microglial cells were treated with activin A (0.13 ng/ml–13 μg/ml) alone or in combination with agonists of TLR2, 4, and 9. Phagocytosis of Escherichia coli K1 as well as release of TNF-α, IL-6, CXCL1, and NO was assessed.
Results: Activin A dose-dependently enhanced the phagocytosis of Escherichia coli K1 by microglial cells activated by agonists of TLR2, 4, and 9 without further increasing NO and proinflammatory cytokine release. Cell viability of microglial cells was not affected by activin A.
Conclusions: Priming of microglial cells with activin A could increase the elimination of bacteria in bacterial CNS infections. This preventive strategy could improve the resistance of the brain to infections, particularly in elderly and immunocompromised patients.
Purpose: DINO and DACOTA were prospective, noninterventional studies assessing the health status and quality of life of patients with COPD newly treated with roflumilast 500 µg once-daily add-on therapy.
Patients and methods: Patients were evaluated over 6 months. Clinical COPD questionnaire (CCQ) and COPD assessment test (CAT) scores were recorded at baseline and after 3 and 6 months. In DACOTA, post-bronchodilator FEV1 was recorded at each time point.
Results: Of 5,462 and 3,645 patients recruited into DINO and DACOTA, respectively, 3,274 patients in DINO and 916 patients in DACOTA completed the 6-month visit. Almost all patients had severe or very severe airway obstruction; mean baseline CCQ total score was 3.9 in DINO and 3.7 in DACOTA. Overall, 33.8% of patients in DACOTA and 30.6% in DINO discontinued treatment prematurely. Significant and clinically relevant improvements in CCQ total scores were observed in both studies (mean change from baseline of 1.36 in DINO and 0.91 in DACOTA at Month 6 [all P<0.001]). Changes in CAT total score from baseline to Month 6 indicated that the average clinical impact of COPD was reduced from a severe (score: 21–30) to a moderate (score: 11–20) impairment. In DACOTA, mean change in post-bronchodilator FEV1 was 202 mL (P<0.001). Diarrhea, nausea, and weight decrease were the most frequently reported adverse drug reactions.
Conclusion: In real-life clinical practice, roflumilast treatment as an add-on therapy is associated with clinically relevant improvements in health status and quality of life.
Sprachen, Epochen und Gattungen stellt die Literaturwissenschaften immer wieder vor die Frage, wie sie diese Entwicklung mitgestalten und zu ihrem Vorteil nutzen können. Dabei ist digital nicht gleich digital, sondern es existiert eine Vielzahl sehr unterschiedlicher, digitaler Repräsentationsformen von Text. Nur wenige dieser Repräsentationsformen werden literaturwissenschaftlichen Anforderungen tatsächlich gerecht, darunter diejenige, die den Richtlinien der Text Encoding Initiative folgt. Der vorliegende Beitrag vergleicht zunächst einige derzeit gängige digitale Repräsentationsformen von Text. Für literaturwissenschaftliche Forschung besonders geeignet erweist sich hierbei eine Repräsentationsform, die den Richtlinien der Text Encoding Initiative folgt. Daher informiert der Beitrag anschließend über deren Nutzen für die literaturwissenschaftliche Arbeit, sowohl im Bereich der wissenschaftlichen Textedition als auch im Bereich der Analyse und Interpretation von Texten. Nur wenn die Literaturwissenschaften in ihrer Breite den Nutzen von offenen, expressiven, flexiblen und standardisierten, langfristig nutzbaren Formaten für die Forschung erkennen, können sie sich mit dem erforderlichen Nachdruck für deren Verbreitung einsetzen und durch die zunehmende Verfügbarkeit von Texten in solchen Formaten für die eigene Forschung und Lehre davon profitieren.
Der Artikel stellt aktuelle stilometrische Studien im Delta-Kontext vor. Diskutiert wird, warum die Verwendung des Kosinus-Abstands zu einer Verbesserung der Erfolgsquote führt; durch Experimente zur Vektornormalisierung gelingt es, die Funktionsweise von Delta besser zu verstehen. Anhand von mittelhochdeutschen Texten wird gezeigt, dass auch metrische Eigenschaften zur Autorschaftsattribution eingesetzt werden können. Zudem wird untersucht, inwieweit die mittelalterliche, nicht-normierte Schreibung die Erfolgsquote von Delta beeinflusst. Am Beispiel von arabisch-lateinischen Übersetzungen wird geprüft, inwieweit eine selektive Merkmalseliminierung dazu beitragen kann, das Übersetzersignal vom Genresignal zu isolieren.
Schiller and Goethe have very different conceptions of tragedy. In his play Don Carlos, Schiller, especially in the character of Philip II, shows us the conflict between blood and positive law. In Goethe´s novel Elective Affinities, the individual will is ignorant of fate and helpless against it. So to speak, Schiller applies the "Antigone´s Model" and Goethe applies the "Oedipus Model". In his dramatic vision of the conflict, Schiller is inspired by Shakespeare´s plays. However, Goethe´s point of view is based on his reflections on Natural Philosophy.
Expression of surfactant protein B is dependent on cell density in H441 lung epithelial cells
(2017)
Background: Expression of surfactant protein (SP)-B, which assures the structural stability of the pulmonary surfactant film, is influenced by various stimuli, including glucocorticoids; however, the role that cell-cell contact plays in SP-B transcription remains unknown. The aim of the current study was to investigate the impact of cell-cell contact on SP-B mRNA and mature SP-B expression in the lung epithelial cell line H441.
Methods: Different quantities of H441 cells per growth area were either left untreated or incubated with dexamethasone. The expression of SP-B, SP-B transcription factors, and tight junction proteins were determined by qPCR and immunoblotting. The influence of cell density on SP-B mRNA stability was investigated using the transcription inhibitor actinomycin D.
Results: SP-B mRNA and mature SP-B expression levels were significantly elevated in untreated and dexamethasone-treated H441 cells with increasing cell density. High cell density as a sole stimulus was found to barely have an impact on SP-B transcription factor and tight junction mRNA levels, while its stimulatory ability on SP-B mRNA expression could be mimicked using SP-B-negative cells. SP-B mRNA stability was significantly increased in high-density cells, but not by dexamethasone alone.
Conclusion: SP-B expression in H441 cells is dependent on cell-cell contact, which increases mRNA stability and thereby potentiates the glucocorticoid-mediated induction of transcription. Loss of cell integrity might contribute to reduced SP-B secretion in damaged lung cells via downregulation of SP-B transcription. Cell density-mediated effects should thus receive greater attention in future cell culture-based research.
Neural responses to heartbeats in the default network encode the self in spontaneous thoughts
(2016)
The default network (DN) has been consistently associated with self-related cognition, but alsoto bodily state monitoring and autonomic regulation. We hypothesized that these two seemingly disparate functional roles of the DN are functionally coupled, in line with theories proposing that selfhood is grounded in the neural monitoring of internal organs, such as the heart. We measured with magnetoencephalograhy neural responses evoked by heartbeats while human participants freely mind-wandered. When interrupted by a visual stimulus at random intervals, participants scored the self-relatedness of the interrupted thought. They evaluated their involvement as the firstperson perspective subject or agent inthethought (“I”), and on another scaleto what degreethey werethinking aboutthemselves (“Me”). During the interrupted thought, neural responses to heartbeats in two regions of the DN, the ventral precuneus and the ventromedial prefrontal cortex, covaried, respectively, with the “I” and the “Me” dimensions of the self, even at the single-trial level. No covariation between self-relatedness and peripheral autonomic measures (heart rate, heart rate variability, pupil diameter, electrodermal activity, respiration rate, and phase) or alpha power was observed. Our results reveal a direct link between selfhood and neural responses to heartbeats in the DN and thus directly support theories grounding selfhood in the neural monitoring of visceral inputs. More generally, the tight functional coupling between self-related processing and cardiac monitoring observed here implies that, even in the absence of measured changes in peripheral bodily measures, physiological and cognitive functions have to be considered jointly in the DN.
Background: Kyrgyzstan, where HIV is concentrated in prisons and driven by injection drug use, provides a prison-based methadone maintenance therapy program as well as abstinence-oriented therapeutic community based on the 12-step model called the “Clean Zone.” We aimed to qualitatively assess how prisoners navigate between these treatment options to understand the persistence of the Clean Zone despite a lack of evidence to support its effectiveness in treating opioid use disorders.
Methods: We conducted an analysis of policy documents and over 60 h of participant observation in February 2016, which included focus groups with a convenience sample of 20 therapeutic community staff members, 110 prisoners across three male and one female prisons, and qualitative interviews with two former Clean Zone participants. Field notes containing verbatim quotes from participants were analyzed through iterative reading and discussion to understand how participants generally perceive the program, barriers to entry and retention, and implications for future treatment within prisons.
Results: Our analyses discerned three themes: pride in the mission of the Clean Zone, idealism regarding addiction treatment outcomes against all odds, and the demonization of methadone.
Conclusion: Despite low enrollment and lack of an evidence base, the therapeutic community is buttressed by the strong support of the prison administration and its clients as an “ordered” alternative to what is seen as chaotic life outside of the Clean Zone. The lack of services for Clean Zone patients after release likely contributes to high rates of relapse to drug use. The Clean Zone would benefit from integration of stabilized methadone patients combined with a post-release program.