117 research outputs found
Ungleiche Ungleichheiten:Zu den Gemeinsamkeiten und Unterschieden von Sexismus und Rassismus
Sexismus durchzieht fast alle gesellschaftlichen Teilbereiche und deren Grundlagen, im Kern ging es schon Jahrtausende lang um die Rechtfertigung der Herrschaft von Männern über Frauen. Die Minderwertigkeit „der Frau“ wurde unter Rückgriff auf natürliche Begebenheiten bewiesen.
Die Grundlage sowohl von Sexismus als auch von Rassismus ist eine Konstruktion: Beim Sexismus die des „weiblichen Geschlechts“, beim Rassismus die der „Rasse“. Während sich die Benennung des Objekts von Rassismus im Laufe der Jahre gewandelt hat, von "Rasse" zu "Kultur", ist das Objekt von Sexismus 'Geschlecht' (mithin 'Frau') gleich geblieben. Gemeinsam ist beiden sozialen Konstruktionen, dass das Objekt "naturalisiert", bzw. biologistisch determiniert wird, um die gegebenen Verhältnisse festzuschreiben.
Die Objekte von Sexismus und Rassismus als soziale Konstruktionen zu betrachten und sie vor diesem Hintergrund in Beziehung zu setzen, begrĂĽndet sich daher aus der Vergleichbarkeit der UnterdrĂĽckungsformen
Soziale Arbeit, digitale Transformation und technologischer Posthumanismus
Die digitale Transformation verändert sowohl die Gesellschaft als auch die Menschen. Besonders der technologisch-posthumanistische Diskurs stellt die Frage, wie weit diese Veränderungen gehen können. Dieser Beitrag möchte zeigen, dass es die Aufgabe der Sozialen Arbeit ist, gesellschaftlichen Wandel, soziale Entwicklungen und sozialen Zusammenhalt zu fördern und sie sich ihrer Verantwortung in der Triade mit der digitalen Transformation und dem technologischen Posthumanismus bewusst werden muss
No Prestige, No Money, No Contribution? The German Social Sciences’ Didactics and the Omissions of Sociology: What it is All About
Kein Abstract vorhanden
No Abstract availabl
Praktisch eingeschränkte Perspektiven? Eine kritische Diskussion geschlechtertheoretischer Implikationen in Gender Mainstreaming und Diversity Management
Die heutigen Gender Studies können nach Meinung der Autorinnen nicht ohne einen Bezug zur Frauenbewegung und deren politischen Forderungen verstanden werden. Denn die Theorien zur Geschlechterungleichheit, die politischen Strategien und Lösungen sowie die Veränderungen im Geschlechterverhältnis waren und sind eng miteinander verwoben. Ein Blick in die Geschichte der sozialwissenschaftlichen Erforschung von 'Geschlecht' zeigt, wie sich deren thematische und politische Felder verändert haben und wie janusgesichtig sie sich in der sozialen Anwendungspraxis manchmal erweisen. Die Autorinnen geben einen kurzen Überblick über zentrale, aktuelle geschlechtertheoretische Ansätze und diskutieren vor diesem theoretischen Hintergrund das Konzept des Gender Mainstreaming (GM) und des Diversity Management (DM) im Hinblick auf ihre Praxisrelevanz. (ICI2
Strain-Promoted Cycloaddition of Cyclopropenes with o-Quinones: A Rapid Click Reaction
Novel click reactions are of continued interest in fields as diverse as bio-conjugation, polymer science and surface chemistry. Qualification as a proper 'click' reaction requires stringent criteria, including fast kinetics and high conversion, to be met. Herein, we report a novel strain-promoted cycloaddition between cyclopropenes and o-quinones in solution and on a surface. We demonstrate the 'click character' of the reaction in solution and on surfaces for both monolayer and polymer brush functionalization
Palmitate-Triggered COX2/PGE2-Related Hyperinflammation in Dual-Stressed PdL Fibroblasts Is Mediated by Repressive H3K27 Trimethylation
The interrelationships between periodontal disease, obesity-related hyperlipidemia and mechanical forces and their modulating effects on the epigenetic profile of periodontal ligament (PdL) cells are assumed to be remarkably complex. The PdL serves as a connective tissue between teeth and alveolar bone and is involved in pathogen defense and the inflammatory responses to mechanical stimuli occurring during tooth movement. Altered inflammatory signaling could promote root resorption and tooth loss. Hyperinflammatory COX2/PGE2 signaling was reported for human PdL fibroblasts (HPdLFs) concomitantly stressed with Porphyromonas gingivalis lipopolysaccharides and compressive force after exposure to palmitic acid (PA). The aim of this study was to investigate the extent to which this was modulated by global and gene-specific changes in histone modifications. The expression of key epigenetic players and global H3Kac and H3K27me3 levels were quantitatively evaluated in dual-stressed HPdLFs exposed to PA, revealing a minor force-related reduction in repressive H3K27me3. UNC1999-induced H3K27me3 inhibition reversed the hyperinflammatory responses of dual-stressed PA cultures characterized by increased COX2 expression, PGE2 secretion and THP1 adhesion. The reduced expression of the gene encoding the anti-inflammatory cytokine IL-10 and the increased presence of H3K27me3 at its promoter-associated sites were reversed by inhibitor treatment. Thus, the data highlight an important epigenetic interplay between the different stimuli to which the PdL is exposed
Hyperlipidemic Conditions Impact Force-Induced Inflammatory Response of Human Periodontal Ligament Fibroblasts Concomitantly Challenged with P. gingivalis -LPS
In obese patients, enhanced serum levels of free fatty acids (FFA), such as palmitate (PA) or oleate (OA), are associated with an increase in systemic inflammatory markers. Bacterial infection during periodontal disease also promotes local and systemic low-grade inflammation. How both conditions concomitantly impact tooth movement is largely unknown. Thus, the aim of this study was to address the changes in cytokine expression and the secretion of human periodontal ligament fibroblasts (HPdLF) due to hyperlipidemic conditions, when additionally stressed by bacterial and mechanical stimuli. To investigate the impact of obesity-related hyperlipidemic FFA levels on HPdLF, cells were treated with 200 µM PA or OA prior to the application of 2 g/cm(2) compressive force. To further determine the additive impact of bacterial infection, HPdLF were stimulated with lipopolysaccharides (LPS) obtained from Porphyromonas gingivalis. In mechanically compressed HPdLF, PA enhanced COX2 expression and PGE2 secretion. When mechanically stressed HPdLF were additionally stimulated with LPS, the PGE2 and IL6 secretion, as well as monocyte adhesion, were further increased in PA-treated cultures. Our data emphasize that a hyperlipidemic condition enhances the susceptibility of HPdLF to an excessive inflammatory response to compressive forces, when cells are concomitantly exposed to bacterial components
Bio-orthogonal Fluorescent Labelling of Biopolymers through Inverse-Electron-Demand Diels–Alder Reactions
Bio-ort
hogona
llabellin
gschemes
based
on inverse-elec
tron-
deman
dDiels–Ald
er (IEDDA)
cycloa
ddition
have
attracted
much
attention
in chem
ical biology
recently
.The appeal
ing
features
of this reactio
n, such
as the fast reactio
nkinetics,
fully
bio-ort
hogonal
nature
and high
selectiv
ity,have helped
chem
i-
cal biologists
gain
deeper
understandi
ng of biochemic
al pro-
cesses
at the molecular
level.Listing
the compo
nents
and dis-
cussing
the possib
ilities
andlimitations
of thesereagent
s, we
provid
earecent
snapshot
of the field
of IEDDA
-based
biomo-
lecular
manipulatio
nwith special
focus
on fluores
cent
modula-
tion
approaches
throug
hthe use of bio-orthogon
alized
build-
ing blocks.
At the end,
we discuss
challenges
that
need
to be
addres
sed
for further
develop
ments
in order
to overcome
recent
limita
tions
and to enabl
eresearchers
to answer
biomo
-
lecular
quest
ions in more
detail
Conservation and divergence of myelin proteome and oligodendrocyte transcriptome profiles between humans and mice
Human myelin disorders are commonly studied in mouse models. Since both clades evolutionarily diverged approximately 85 million years ago, it is critical to know to what extent the myelin protein composition has remained similar. Here, we use quantitative proteomics to analyze myelin purified from human white matter and find that the relative abundance of the structural myelin proteins PLP, MBP, CNP, and SEPTIN8 correlates well with that in C57Bl/6N mice. Conversely, multiple other proteins were identified exclusively or predominantly in human or mouse myelin. This is exemplified by peripheral myelin protein 2 (PMP2), which was specific to human central nervous system myelin, while tetraspanin-2 (TSPAN2) and connexin-29 (CX29/GJC3) were confined to mouse myelin. Assessing published scRNA-seq-datasets, human and mouse oligodendrocytes display well-correlating transcriptome profiles but divergent expression of distinct genes, including Pmp2, Tspan2, and Gjc3. A searchable web interface is accessible via www.mpinat.mpg.de/myelin. Species-dependent diversity of oligodendroglial mRNA expression and myelin protein composition can be informative when translating from mouse models to humans
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