Activity

  • Sigmon posted an update 8 months, 3 weeks ago

    It could also suggest a successful retrieval of the memory of the missing frequencies, resulting in their conscious perception indicating the role of higher-order processing in the mechanism of action of ZT illusions. To establish a more concrete relationship between ZT illusion and chronic tinnitus, future longitudinal studies following up a much larger sample of participants who reliably perceive a ZT illusion to see if they develop tinnitus at a later stage is essential. This could inform us if the ZT illusion may be a precursor to chronic tinnitus. © 2020 The Authors. Human Brain Mapping published by Wiley Periodicals, Inc.This study assessed the subjective well-being and perceived stress of unpaid carers of disability benefit claimants. A total of 129 carers from the UK were surveyed between July and September 2017, using a cross-sectional design. Carers, who provided unpaid support to sick or disabled friends, family or neighbours in a non-professional capacity, reported here as unpaid carers, were asked to complete a web-based questionnaire comprising of the Perceived Stress-10-item Scale (PSS-10), the Personal Wellbeing Index-Adult (PWI-A), sociodemographic characteristics, the time they spent caring per day and the number of Personal Independence Payment and Work Capability Assessment interviews prepared for and attended by the person they cared for. Hierarchical regression analyses were performed to assess the effects of the number of benefit assessments on stress and well-being scores, controlling for carers’ sociodemographic characteristics and the time they spent caring. Analyses revealed that the number of times that claimants were exposed to benefit assessments significantly and negatively predicted unpaid carers’ well-being and was positively related to their stress levels. After controlling for sociodemographic characteristics and hours supporting per day, benefit assessments predicted 8.1% of perceived stress and 4.3% of well-being variance. Being a female unpaid carer of a disability benefit claimant negatively predicted 7.5% of well-being variance. The results offered unique evidence of the negative psychological effects of disability benefit assessments upon unpaid carers, while adding to the evidence of female carers facing increased risks of psychological distress. © 2020 John Wiley & Sons Ltd.The merger of cobalt-catalyzed C-H activation and electrosynthesis provides new avenues for resource-economical molecular syntheses, but their reaction mechanisms remain unfortunately poorly understood. Herein, we report the identification and full characterization of electrochemically generated high-valent cobalt(III/IV) complexes as crucial intermediates in electrochemical cobalt-catalyzed C-H oxygenations. Detailed mechanistic studies provided support for an oxidatively-induced reductive elimination via highly-reactive cobalt(IV) intermediates. These key insights set the stage for unprecedented cobaltaelectro two-fold C-H/C-H activation. BMS-1 inhibitor © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.The characterization of species’ environmental niches and spatial distribution predictions based on them are now central to much of ecology and conservation, but implicitly requires decisions about the appropriate spatial scale (i.e. grain) of analysis. Ecological theory and empirical evidence suggest that range-resident species respond to their environment at two characteristic, hierarchical spatial grains (i) response grain, the (relatively fine) grain at which an individual uses environmental resources, and (ii) occupancy grain, the (relatively coarse) grain equivalent to a typical home range. We use a multi-grain (MG) occupancy model, aided by fine-grain remotely sensed imagery, to simultaneously estimate species-environment associations at both grains, conduct grain optimization to measure response grain, and apply this analysis framework to an example species a medium-sized bird (Tockus deckeni) in a heterogeneous East African landscape. Based on home range analysis of movement data, we calculate an occonservation goals. More generally, we conclude that multi-grain approaches of the sort presented, and increasingly enabled by growing high-resolution remotely sensed data, hold great promise for offering a more mechanistic framework for assessing the appropriate grain(s) for population monitoring and management and enable more reliable estimates of abundances and species’ distributions. This article is protected by copyright. All rights reserved.The abilities of opioids to activate downstream signaling pathways normally depend on the binding between opioids and their receptors. However, opioids may also function in a receptor-independent manner, especially in neural stem cells (NSCs) in which the expression of opioid receptors and endogenous opioid agonists is low. When two opioids, morphine and naloxone, were used during the early stage of NSC differentiation, increased neurogenesis was observed. However, naloxone methiodide, a membrane impenetrable analog of naloxone, did not affect the NSC differentiation. The abilities of morphine and naloxone to facilitate neurogenesis were also observed in opioid receptor-knockout NSCs. Therefore, morphine and naloxone promote neurogenesis in a receptor-independent manner at least during the early stage. In addition, the receptor-independent functions of opioids were not observed in methylcytosine dioxygenase ten-eleven translocation 1 (Tet1) knockout NSCs. When the expression of opioid receptors increased and the expression of Tet1 decreased during the late stage of NSC differentiation, morphine, but not naloxone, inhibited neurogenesis via traditional receptor-dependent and miR181a-Prox1-Notch-related pathway. In summary, the current results demonstrated the time-dependent effects of opioids during the differentiation of NSCs and provided additional insight on the complex functions of opioids. © 2020 Federation of American Societies for Experimental Biology.OBJECTIVES Ageing could be a contributing factor to the progression of temporomandibular joint osteoarthritis (TMJ OA), whereas its pathogenesis and potential therapeutic strategy have not been comprehensively investigated. MATERIALS AND METHODS We generated ageing mouse models (45-week and 60-week; 12-week mice as control) and intermittently injected 45-week mice with parathyroid hormone (PTH(1-34)) or vehicle for 4 weeks. Cartilage and subchondral bone of TMJ were analysed by microCT, histological and immunostaining. Western blot, qRT-PCR, ChIP, ELISA and immunohistochemical analysis were utilized to examination the mechanism of PTH(1-34)’s function. RESULTS We showed apparent OA-like phenotypes in ageing mice. PTH treatment could ameliorate the degenerative changes and improve bone microarchitecture in the subchondral bone by activating bone remodelling. Moreover, PTH inhibited phosphorylation level of Smad3, which can combine with p16ink4a gene promoter region, resulting in reduced senescent cells accumulation and increased cellular proliferation of marrow mesenchymal stem cells (MSCs).

Skip to toolbar