111 research outputs found
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“Being here, you could actually be yourself”: Trans and gender expansive youth’s experiences of affirmation within LGBTQ+ community-based organizations
Across the United States, polarizing politics have contributed to the increased stigmatization of transgender (trans) and gender expansive (TGE) youth, reinforcing health inequities for this population. Although lesbian, gay, bisexual, transgender, queer, and/or questioning (LGBTQ+) youth centers have often served as places of refuge for young people across the gender spectrum, literature has yet to show how practices and strategies used in these settings promote TGE affirmation. This qualitative study explores youth and staff experiences within these settings; identifies the services, policies, and environments needed to support TGE community members; and ultimately calls for the expansion of the limited research on TGE experience and affirmation across such spaces. Using data collected in a larger study on affirming practices for LGBTQ+ youth, this article presents findings from in-depth, semistructured focus groups and interviews with TGE (n = 12) youth and staff (n = 12) across four LGBTQ+ community-based organizations in two large urban centers. Study findings show these organizations provide TGE affirmation through language, programming, and atmospheres of openness to identity exploration. Essential to these offerings are organizational policy mandates, such as correct pronoun usage and TGE-specific programming. Youth often juxtapose their experiences of affirmation within LGBTQ+ spaces with experiences of invalidation from the cisheteronormative cultures within their school or home environments. Implications for future practice and research include administering ongoing training on TGE-affirming language and developing comprehensive accountability measures (e.g., TGE-inclusive community guidelines). Institutions with these systems in place are well-equipped to contribute to the fight for trans liberation. (PsycInfo Database Record (c) 2024 APA, all rights reserved
Stress, the cortisol awakening response and cognitive function
There is evidence that stress-induced disruption of the circadian rhythm of cortisol secretion, has negative consequences for brain health. The cortisol awakening response (CAR) is the most prominent and dynamic aspect of this rhythm. It has complex regulatory mechanisms making it distinct from the rest of the cortisol circadian rhythm, and is frequently investigated as a biomarker of stress and potential intermediary between stress and impaired brain function. Despite this, the precise function of the CAR within the healthy cortisol circadian rhythm remains poorly understood. Cortisol is a powerful hormone known to influence cognition in multiple and complex ways. Studies of the CAR and cognitive function have used varied methodological approaches which have produced similarly varied findings. The present review considers the accumulating evidence linking stress, attenuation of the CAR and reduced cognitive function, and seeks to contextualize the many findings to study populations, cognitive measures, and CAR methodologies employed. Associations between the CAR and both memory and executive functions are discussed in relation to its potential role as a neuroendocrine time of day signal that synchronizes peripheral clocks throughout the brain to enable optimum function, and recommendations for future research are provided
Inactivation of Effector Caspases through Nondegradative Polyubiquitylation
Ubiquitin-mediated inactivation of caspases has long been postulated to contribute to the regulation of apoptosis. However, detailed mechanisms and functional consequences of caspase ubiquitylation have not been demonstrated. Here we show that the Drosophila Inhibitor of Apoptosis 1, DIAP1, blocks effector caspases by targeting them for polyubiquitylation and nonproteasomal inactivation. We demonstrate that the conjugation of ubiquitin to drICE suppresses its catalytic potential in cleaving caspase substrates. Our data suggest that ubiquitin conjugation sterically interferes with substrate entry and reduces the caspase’s proteolytic velocity. Disruption of drICE ubiquitylation, either by mutation of DIAP1’s E3 activity or drICE’s ubiquitin-acceptor lysines, abrogates DIAP1’s ability to neutralize drICE and suppress apoptosis in vivo. We also show that DIAP1 rests in an “inactive” conformation that requires caspase-mediated cleavage to subsequently ubiquitylate caspases. Taken together, our findings demonstrate that effector caspases regulate their own inhibition through a negative feedback mechanism involving DIAP1 “activation” and nondegradative polyubiquitylation
Electron microscopic immunolocalization of a karyoskeletal protein of molecular weight 145 000 in nucleoli and perinucleolar bodies of Xenopus laevis
Is there a circadian variation of epileptiform abnormalities in idiopathic generalized epilepsy?
Control of complexity in virtual organizations: the role of enterprise modelling
In general it can be staled that re-design and optimisation of a (virtuaI) enterprise is not facilitated but hindered by infonnation systems. Too much of lhe 'way of working' of the existing situalion is tixed in the existing systems to aJlow for easy changes. This problem is reinforeed by the requiremenls for differentiation between similar but not identical business processes that further emphasize the need for increased flexibility, and the problems as caused by the current generation if enterprise information systems. Adequale redcsign of both the business processes of a (virtual) organization and the associated infonnation systems requires enterprise modelling. In this paper we will, based on experiences gained in the area of product data modelling, develop a number of requirements for enterprise modelling methodologies. reference architectures, and languages. In this we will mainly focus on the areas of semantics, dynamics and complexity
Transcriptome sequencing supports a conservation of macrophage polarization in fish
Mammalian macrophages can adopt polarization states that, depending on the exact stimuli present
in their extracellular environment, can lead to very diferent functions. Although these diferent
polarization states have been shown primarily for macrophages of humans and mice, it is likely that
polarized macrophages with corresponding phenotypes exist across mammals. Evidence of functional
conservation in macrophages from teleost fsh suggests that the same, or at least comparable
polarization states should also be present in teleosts. However, corresponding transcriptional profles
of marker genes have not been reported thus far. In this study we confrm that macrophages from
common carp can polarize into M1- and M2 phenotypes with conserved functions and corresponding
transcriptional profles compared to mammalian macrophages. Carp M1 macrophages show increased
production of nitric oxide and a transcriptional profle with increased pro-infammatory cytokines
and mediators, including il6, il12 and saa. Carp M2 macrophages show increased arginase activity
and a transcriptional profle with increased anti-infammatory mediators, including cyr61, timp2b
and tgm2b. Our RNA sequencing approach allowed us to list, in an unbiased manner, markers
discriminating between M1 and M2 macrophages of teleost fsh. We discuss the importance of our
fndings for the evaluation of immunostimulants for aquaculture and for the identifcation of gene
targets to generate transgenic zebrafsh for detailed studies on M1 and M2 macrophages. Above all,
we discuss the striking degree of evolutionary conservation of macrophage polarization in a lower
vertebrate.Tis work was supported by the European
Commission under the 8th (H2020) Framework Program for Research and Technological Development of the
European Union (PARAFISHCONTROL Grant No. 634429) and by the 7th Framework program [NEMO Grant
No. PITN-GA-2008–214505].Peer reviewe
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