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90 result(s) for "Zechner, M"
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OCD-like behavior is caused by dysfunction of thalamo-amygdala circuits and upregulated TrkB/ERK-MAPK signaling as a result of SPRED2 deficiency
Obsessive-compulsive disorder (OCD) is a common neuropsychiatric disease affecting about 2% of the general population. It is characterized by persistent intrusive thoughts and repetitive ritualized behaviors. While gene variations, malfunction of cortico-striato-thalamo-cortical (CSTC) circuits, and dysregulated synaptic transmission have been implicated in the pathogenesis of OCD, the underlying mechanisms remain largely unknown. Here we show that OCD-like behavior in mice is caused by deficiency of SPRED2, a protein expressed in various brain regions and a potent inhibitor of Ras/ERK-MAPK signaling. Excessive self-grooming, reflecting OCD-like behavior in rodents, resulted in facial skin lesions in SPRED2 knockout (KO) mice. This was alleviated by treatment with the selective serotonin reuptake inhibitor fluoxetine. In addition to the previously suggested involvement of cortico-striatal circuits, electrophysiological measurements revealed altered transmission at thalamo-amygdala synapses and morphological differences in lateral amygdala neurons of SPRED2 KO mice. Changes in synaptic function were accompanied by dysregulated expression of various pre- and postsynaptic proteins in the amygdala. This was a result of altered gene transcription and triggered upstream by upregulated tropomyosin receptor kinase B (TrkB)/ERK-MAPK signaling in the amygdala of SPRED2 KO mice. Pathway overactivation was mediated by increased activity of TrkB, Ras, and ERK as a specific result of SPRED2 deficiency and not elicited by elevated brain-derived neurotrophic factor levels. Using the MEK inhibitor selumetinib, we suppressed TrkB/ERK-MAPK pathway activity in vivo and reduced OCD-like grooming in SPRED2 KO mice. Altogether, this study identifies SPRED2 as a promising new regulator, TrkB/ERK-MAPK signaling as a novel mediating mechanism, and thalamo-amygdala synapses as critical circuitry involved in the pathogenesis of OCD.
Impact of EMpagliflozin on cardiac function and biomarkers of heart failure in patients with acute MYocardial infarction—The EMMY trial
Sodium glucose cotransporter 2 (SGLT2) inhibitors are established antidiabetic drugs with proven cardiovascular benefit. Although growing evidence suggests beneficial effects on myocardial remodeling, fluid balance and cardiac function, the impact of empagliflozin initiated early after acute myocardial infarction (AMI) has not been investigated yet. Therefore, the impact of EMpagliflozin on cardiac function and biomarkers of heart failure in patients with acute MYocardial infarction (EMMY) trial was designed to investigate the efficacy and safety of empagliflozin in diabetic and non-diabetic patients after severe AMI. Within a multicenter, randomized, double-blind, placebo-controlled, phase 3b trial we will enroll patients with AMI and characteristics suggestive of severe myocardial necrosis are randomized in a 1:1 ratio to empagliflozin (10 mg once daily) or matching placebo. The primary endpoint is the impact of empagliflozin on changes in NT-proBNP within 6 months after AMI. Secondary endpoints include changes in echocardiographic parameters, levels of ketone body concentrations, HbA1c levels and body weight, respectively. Hospitalization rate due to heart failure or other causes, the duration of hospital stay and all-cause mortality will be assessed as exploratory secondary endpoints. The EMMY trial will test empagliflozin in patients with AMI regardless of their diabetic status. The EMMY trial may therefore underpin the concept of SGLT2 inhibition to improve cardiac remodeling, pre-and afterload reduction and cardiac metabolism regardless of its antidiabetic effects. Results will provide the rationale for the conduct of a cardiovascular outcome trial to test the effect of empagliflozin in patients with AMI.
Genetic mechanisms of critical illness in COVID-19
Host-mediated lung inflammation is present 1 , and drives mortality 2 , in the critical illness caused by coronavirus disease 2019 (COVID-19). Host genetic variants associated with critical illness may identify mechanistic targets for therapeutic development 3 . Here we report the results of the GenOMICC (Genetics Of Mortality In Critical Care) genome-wide association study in 2,244 critically ill patients with COVID-19 from 208 UK intensive care units. We have identified and replicated the following new genome-wide significant associations: on chromosome 12q24.13 (rs10735079, P  = 1.65 × 10 −8 ) in a gene cluster that encodes antiviral restriction enzyme activators ( OAS1 , OAS2 and OAS3 ); on chromosome 19p13.2 (rs74956615, P  = 2.3 × 10 −8 ) near the gene that encodes tyrosine kinase 2 ( TYK2 ); on chromosome 19p13.3 (rs2109069, P  = 3.98 ×  10 −12 ) within the gene that encodes dipeptidyl peptidase 9 ( DPP9 ); and on chromosome 21q22.1 (rs2236757, P  = 4.99 × 10 −8 ) in the interferon receptor gene IFNAR2 . We identified potential targets for repurposing of licensed medications: using Mendelian randomization, we found evidence that low expression of IFNAR2 , or high expression of TYK2 , are associated with life-threatening disease; and transcriptome-wide association in lung tissue revealed that high expression of the monocyte–macrophage chemotactic receptor CCR2 is associated with severe COVID-19. Our results identify robust genetic signals relating to key host antiviral defence mechanisms and mediators of inflammatory organ damage in COVID-19. Both mechanisms may be amenable to targeted treatment with existing drugs. However, large-scale randomized clinical trials will be essential before any change to clinical practice. A genome-wide association study of critically ill patients with COVID-19 identifies genetic signals that relate to important host antiviral defence mechanisms and mediators of inflammatory organ damage that may be targeted by repurposing drug treatments.
INFORMAL CARERS IN THE CARE MARKETS
Care for the elderly in the Nordic welfare states, such as Finland, has been characterized by strong social rights for publicly provided care services. This, however, has been changing in decent decades due to economic harshness and ageing of the population with increasing demand for services. One of the attempts to solve this dilemma in Finland, has been to increase informal care given by family members and other close ones. To support informal care, a benefit called informal care allowance, has been developed already at the end of the 1980’s. It is a combination of a taxable cash benefit and public care services where the caregiver has pension rights and is entitled to a certain number of days off each month. The political aim is to increase the take-up of this benefit. Simultaneously with the attempt to encourage informal care, also other changes in the care services have been taking place. Previously public bodies, namely municipalities, have been the main service providers while the provision of non-governmental organizations has covered certain service niches. During the past two decades, markets actors have been encouraged with success to become providers of publicly funded services. This has changed the position of informal carers and those in need of care. Informal carers increasingly have to focus on, not only on care, but also on seeking, comparing and controlling the service providers that increasingly are market actors. This presentation focuses on informal carers as markets actors in the context of a Nordic welfare state.
AGING WELL: USING A MULTIDIMENSIONAL WELLNESS FRAMEWORK TO GUIDE CLINICAL INTERVENTIONS FOR OLDER ADULTS
Abstract Wellness theory is predicated on the assumption that health is multidimensional and not merely the absence of disease (World Health Organization, 1948). Multidimensional Wellness interventions integrate numerous inter-related domains (e.g. physical, social, emotional, spiritual, occupational) in a manner that is holistic, strengths-based, and focused on cultivating factors that support patients’ health and well-being. Wellness theory is commonly applied in university and workplace settings, and in recent years, multidimensional wellness models have emerged in age-based settings such as continuing care retirement communities (Mather LifeWays Institute on Aging, 2018). Compared to other clinical models used with older adults, multidimensional wellness has advantages due to its breadth of focus and connection with person-centered care. In spite of its utility, wellness theory has been largely overlooked in clinical gerontology research. This session will provide two examples of clinical wellness applications designed to improve resilience, mental health and multi-dimensional wellness (First Author, 2016a; Second Author, 2013). A review of wellness theory, including the historical evolution of wellness models and measurement strategies, and the state of applied wellness research will also be presented. Further, wellness dimensions will be operationalized in regard to older adults, with discussion of the dimensions most frequently studied. Finally, the authors will provide practical considerations for how professionals from various backgrounds (e.g. nursing, counseling, social work, occupational therapy) can incorporate a wellness framework into their practice and research (First Author, 2016b; Second Author, 2018).
Pulmonary echography in systemic sclerosis
In systemic sclerosis patients, interstitial lung disease and pulmonary hypertension are highly associated with mortality. The time point of detecting manifestations like pulmonary hypertension and interstitial lung disease (ILD) is of vital importance. High-resolution computed tomography (HRCT) to date is the gold standard to diagnose ILD. In addition, an ultrasound of the lung is suggested as a noninvasive and radiation-free method of structural monitoring of the lung. We tested the reliability of lung sonography for the assessment of patients with systemic sclerosis. In a pilot study involving 25 patients with systemic sclerosis and 40 healthy volunteers, we screened the pleura and the pulmonary parenchyma for sonographic abnormalities. The occurrence of B lines, comet tail phenomena, and pleural irregularities was scored. All systemic sclerosis (SSc) patients were subjected to computed x-ray tomography of the chest. Forty-four percent of SSc patients showed B line phenomena and pleural thickening. The diagnosis of ILD in these patients was confirmed by HRCT scan. B line phenomena and pleural irregularities were significantly more common in SSc patients. Patients with ILD had higher pleural scores and comet scores when compared to systemic sclerosis patients without radiographic ILD. If our results are confirmed in larger studies, transthoracic ultrasound of the lung might turn out to be a suitable method for screening patients with systemic sclerosis for incipient pulmonary structural changes.
Systemische Auswirkungen und klinische Aspekte der SARS-CoV-2-Infektion
HintergrundCOVID-19 wird als systemische Erkrankung eingestuft. Ein schwerer Verlauf mit tödlichem Ausgang ist möglich und unvorhersehbar.FragestellungWelche Organsysteme sind primär betroffen? Welche Organveränderungen prädisponieren für einen ungünstigen Verlauf? Welche Organschädigungen finden sich bei letalem Ausgang?Material und MethodeDaten aus publizierten Obduktionsstudien (davon 28 eigene publizierte Fälle) in Hinblick auf Organschädigung und mögliche Todesursachen.ErgebnisseDie schwersten Veränderungen finden sich in den Lungen in Form eines diffusen Alveolarschadens als akutes Atemnotsyndrom des Erwachsenen (ARDS), zum Teil bereits mit Fibrose. Thrombosen in kleinen bis mittelgroßen Pulmonalarterien sind mit Lungeninfarkten vergesellschaftet. Häufige Komplikationen sind bakterielle Bronchopneumonien, seltener Pilzpneumonien. Pulmonale Thromboembolien finden sich in 20–30 % der tödlichen Verläufe, auch bei Fehlen einer tiefen Beinvenenthrombose. Eine intestinale Beteiligung von COVID-19 kann mit ischämischer Schädigung des Darmes einhergehen, in erster Linie bedingt durch Schock oder lokale Thrombose. Die Nieren zeigen eine akute Tubulusschädigung als Ausdruck eines akuten Nierenversagens, Lymphknoten und Milz einen Schwund der Lymphozyten, die Nebennierenrinde eine Hyperplasie. In der Leber finden sich häufig eine Steatose, Leberzellnekrosen, ein portales Entzündungsinfiltrat und eine Proliferation der Kupffer-Zellen. Häufige Grunderkrankungen sind in den Autopsiekollektiven arterieller Hypertonus mit hypertensiver und ischämischer Kardiomyopathie und Diabetes mellitus. In großen bevölkerungsbasierten Studien ergibt sich aber für Hypertoniker im Gegensatz zu Diabetikern kein erhöhtes Mortalitätsrisiko.SchlussfolgerungenPulmonale Kreislaufstörungen mit arteriellen Thrombosen, Infarkten und Pneumonien sind wesentliche und oft letale Komplikationen des ARDS bei COVID-19. Die Erkenntnisse aus Obduktionsstudien haben Therapie und Prophylaxe beeinflusst.
Impact of EM pagliflozin on cardiac function and biomarkers of heart failure in patients with acute MY ocardial infarction—The EMMY trial
BackgroundSodium glucose cotransporter 2 (SGLT2) inhibitors are established antidiabetic drugs with proven cardiovascular benefit. Although growing evidence suggests beneficial effects on myocardial remodeling, fluid balance and cardiac function, the impact of empagliflozin initiated early after acute myocardial infarction (AMI) has not been investigated yet. Therefore, the impact of EMpagliflozin on cardiac function and biomarkers of heart failure in patients with acute MYocardial infarction (EMMY) trial was designed to investigate the efficacy and safety of empagliflozin in diabetic and non-diabetic patients after severe AMI.MethodsWithin a multicenter, randomized, double-blind, placebo-controlled, phase 3b trial we will enroll patients with AMI and characteristics suggestive of severe myocardial necrosis are randomized in a 1:1 ratio to empagliflozin (10 mg once daily) or matching placebo. The primary endpoint is the impact of empagliflozin on changes in NT-proBNP within 6 months after AMI. Secondary endpoints include changes in echocardiographic parameters, levels of ketone body concentrations, HbA1c levels and body weight, respectively. Hospitalization rate due to heart failure or other causes, the duration of hospital stay and all-cause mortality will be assessed as exploratory secondary endpoints.DiscussionThe EMMY trial will test empagliflozin in patients with AMI regardless of their diabetic status. The EMMY trial may therefore underpin the concept of SGLT2 inhibition to improve cardiac remodeling, pre-and afterload reduction and cardiac metabolism regardless of its antidiabetic effects. Results will provide the rationale for the conduct of a cardiovascular outcome trial to test the effect of empagliflozin in patients with AMI.
Co-morbid psychiatric and medical disorders: challenges and strategies
A variety of chronic, co-morbid medical conditions are worsening the quality of life for persons with serious mental illness. The poor overall health of these individuals is interfering with the pursuit and maintenance of rehabilitation goals. Also, very troubling are the facts about their premature mortality, about 25 years earlier than their peers who do not have mental illness. This paper provides an overview of the problems in this area and a discussion of the variety of contributing factors that are negatively influencing the health of persons with serious mental illness. An introduction is provided to the variety of innovations and strategies that are being implemented in an attempt to address the extreme disparities in both care and outcomes. Most of these interventions focus on improving accessibility, coordination of services, and the integration of psychiatric care with other health care and health promotion strategies. The summary and conclusion offer policy, practice, and workforce development recommendations.