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Thyroid hormones (THs) are key regulators of development, tissue differentiation and maintenance of metabolic balance in virtually every cell of the body. Accordingly, severe alteration of TH action during fetal life leads to permanent deficits in humans. The skin is among the few adult tissues expressing the oncofetal protein type 3 deiodinase (D3), the TH inactivating enzyme. Here, we demonstrate that D3 is dynamically regulated during epidermal ontogenesis. To investigate the function of D3 in a post-developmental context, we used a mouse model of conditional epidermal-specific D3 depletion. Loss of D3 resulted in tissue hypoplasia and enhanced epidermal differentiation in a cell-autonomous manner. Accordingly, wound healing repair and hair follicle cycle were altered in the D3-depleted epidermis. Furthermore, in vitro ablation of D3 in primary culture of keratinocytes indicated that various markers of stratified epithelial layers were up-regulated, thereby confirming the pro-differentiative action of D3 depletion and the consequent increased intracellular T3 levels. Notably, loss of D3 reduced the clearance of systemic TH in vivo, thereby demonstrating the critical requirement for epidermal D3 in the maintenance of TH homeostasis. In conclusion, our results show that the D3 enzyme is a key TH-signaling component in the skin thereby providing a striking example of a physiological context for deiodinase-mediated TH metabolism, as well as a rationale for therapeutic manipulation of deiodinases in patho-physiological contexts.The thyroid stimulating hormone receptor (TSHR) mutation database, consisting of all known TSHR mutations and their clinical characterizations, was established in 1999. The database contents are updated here with the same website (tsh-receptor-mutation-database.org). The new database contains 638 cases of TSHR mutations 448 cases of gain of function mutations (7 novel mutations and 41 new cases for previously described mutations since its last update in 2012) and 190 cases of loss of function mutations (28 novel mutations and 31 new cases for previously described mutations since its last update in 2012). This database is continuously updated and allows for rapid validation of patient TSHR mutations causing hyper- or hypothyroidism or insensitivity to TSH.n/a.Native cardiac tissue is comprised of heterogeneous cell populations that work cooperatively for proper tissue function; thus, engineered tissue models have moved toward incorporating multiple cardiac cell types in an effort to recapitulate native multicellular composition and organization. Cardiac tissue models comprised of stem cell-derived cardiomyocytes require inclusion of non-myocytes to promote stable tissue formation, yet the specific contributions of the supporting non-myocyte population on the parenchymal cardiomyocytes and cardiac microtissues have yet to be fully dissected. This gap can be partly attributed to limitations in technologies able to accurately study the individual cellular structure and function that comprise intact 3D tissues. The ability to interrogate the cell-cell interactions in 3D tissue constructs has been restricted by conventional optical imaging techniques that fail to adequately penetrate multicellular microtissues with sufficient spatial resolution. Light sheet fluorescence microscopy overcomes these constraints to enable single cell-resolution structural and functional imaging of intact cardiac microtissues. Multicellular spatial distribution analysis of heterotypic cardiac cell populations revealed that cardiomyocytes and cardiac fibroblasts were randomly distributed throughout 3D microtissues. Furthermore, calcium imaging of live cardiac microtissues enabled single-cell detection of cardiomyocyte calcium activity, which showed that functional heterogeneity correlated with spatial location within the tissues. This study demonstrates that light sheet fluorescence microscopy can be utilized to determine single-cell spatial and functional interactions of multiple cell types within intact 3D engineered microtissues, thereby facilitating the determination of structure-function relationships at both tissue-level and single-cell resolution.Purpose To explore and describe the experience of people having young-onset dementia.Methods This was a qualitative study that used semi-structured interviews to collect data from nine persons with young-onset dementia (aged 47-65; five men and four women). Data were collected in the spring of 2018. All interviews were conducted at the participants’ choice and in their own homes by one interviewer. The collected data were analysed using the six-stage process of reflexive thematic analysis model.Results The analysis revealed three themes Dementia causing loss of control over oneself; becoming a burden to the family while sense of self disappears; and fearing a humiliating future.Conclusions The experience of having and living with young onset dementia affected the persons’ thoughts and memory and was experienced through the persons’ loss of personality and sense of self. Thoughts about the future were associated with fear, and the risk of changing their personalities to something different from the one which they had experienced as humiliating throughout most of their lives.Neuroinflammation is associated with the pathogenesis of all types of neurological disease, in which microglial cells play a critical role. In response to disturbances in the microenvironment, microglia become activated and differentiate into either an M1 phenotype, which has a pro-inflammatory, damaging effect, or an M2 phenotype, which plays an anti-inflammatory and reparative role. Thus, modulating microglial polarization is a suitable strategy to treat neuroinflammatory disorders. Glial cell-derived neurotrophic factor (GDNF) is a neurotrophic mediator that exerts neuroprotective effects during neurological diseases. Dynasore in vivo In this study, we predicted that adipose-derived stem cells (ADSCs) could produce GDNF and investigated the effects of GDNF on microglial M1/M2 polarization. Furthermore, we determined whether GDNF modulates microglial activation and polarization via the PI3K/AKT signaling pathway. We found that the secretion of inflammatory cytokines in lipopolysaccharide-stimulated microglia was downgrated, while the anti-inflammatory mediators in interleukin-4-stimulated microglia were upgrated obviously, following pretreatment with ADSCs or GDNF.