Shared decision making (SDM) is the process by which health care providers and patients collaborate to make health care decisions. This collaboration leads to informed decision making and improved outcomes. However, research on SDM specific to the field of youth mental health is scarce. ACCESS Open Minds (ACCESS OM) is a youth mental health research and evaluation project that implemented and evaluated SDM practices within its various activities and operations. The ACCESS OM network spans a diversity of youth mental health settings across Canada, and includes various stakeholders such as youth, family members and carers, clinicians, researchers, and policy makers. The project values all types of knowledge (specifically, experiential, cultural, clinical, and scientific knowledge) as necessary to lead to better health research, care delivery, and outcomes for patients and their communities. Similarly, it acknowledges the lived experience of patients and, family and carers as expertise. Through the integration of SDM practices, ACCESS OM has formulated valuable insights that can be applied to other health problems and settings. This paper, written by youth and family council members, operational staff, and researchers from the project, will share challenges and solutions that arose in the integration of SDM practices within ACCESS OM's knowledge translation strategy, governance structures, clinical contexts, and capacity-building initiatives.
Depression, a devastating psychiatric disorder, is a leading cause of disability worldwide. Current antidepressants address specific symptoms of the disease, but there is vast room for improvement . In this respect, new compounds that act beyond classical antidepressants to target signal transduction pathways governing synaptic plasticity and cellular resilience are highly warranted. The extracellular signal-regulated kinase (ERK) pathway is implicated in mood regulation, but its pleiotropic functions and lack of target specificity prohibit optimal drug development. Here, we identified the transcription factor ELK-1, an ERK downstream partner , as a specific signaling module in the pathophysiology and treatment of depression that can be targeted independently of ERK. ELK1 mRNA was upregulated in postmortem hippocampal tissues from depressed suicides; in blood samples from depressed individuals, failure to reduce ELK1 expression was associated with resistance to treatment. In mice, hippocampal ELK-1 overexpression per se produced depressive behaviors; conversely, the selective inhibition of ELK-1 activation prevented depression-like molecular, plasticity and behavioral states induced by stress. Our work stresses the importance of target selectivity for a successful approach for signal-transduction-based antidepressants, singles out ELK-1 as a depression-relevant transducer downstream of ERK and brings proof-of-concept evidence for the druggability of ELK-1.
The type 2 vesicular monoamine transporter (VMAT2), by regulating the storage of monoamines transmitters into synaptic vesicles, has a protective role against their cytoplasmic toxicity. Increasing evidence suggests that impairment of VMAT2 neuroprotection contributes to the pathogenesis of Parkinson’s disease (PD). Several transgenic VMAT2 mice models have been developed, however these models lack specificity regarding the monoaminergic system targeting. To circumvent this limitation, we created VMAT2-KO mice specific to the dopamine (DA) nigrostriatal pathway to analyze VMAT2’s involvement in DA depletion-induced motor features associated to PD and examine the relevance of DA toxicity in the pathogenesis of neurodegeneration. Adult VMAT2 floxed mice were injected in the substancia nigra (SN) with an adeno-associated virus (AAV) expressing the Cre-recombinase allowing VMAT2 removal in DA neurons of the nigrostriatal pathway solely. VMAT2 deletion in the SN induced both DA depletion exclusively in the dorsal striatum and motor dysfunction. At 16 weeks post-injection, motor symptoms were accompanied with a decreased in food and water consumption and weight loss. However, despite an accelerating death, degeneration of nigrostriatal neurons was not observed in this model during this time frame. This study highlights a non-cytotoxic role of DA in our genetic model of VMAT2 deletion exclusively in nigrostriatal neurons.
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