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Antibody-mediated rejection (AMR), including chronic AMR (cAMR), causes ~50% of kidney allograft losses each year. Despite attempts to develop well-tolerated and effective therapeutics for the management of AMR, to date, none has obtained FDA approval, thereby highlighting an urgent unmet medical need. Discoveries over the past decade from basic, translational and clinical studies of transplant recipients have provided a foundation for developing novel therapeutic approaches to preventing and treating AMR and cAMR. These interventions are aimed at reducing donor-specific antibody levels, decreasing graft injury and fibrosis, and preserving kidney function. Innovative approaches emerging from basic science findings include targeting interactions between alloreactive T cells and B cells, and depleting alloreactive memory B cells, as well as donor-specific antibody-producing plasmablasts and plasma cells. Therapies aimed at reducing the cytotoxic antibody effector functions mediated by natural killer cells and the complement system, and their associated pro-inflammatory cytokines, are also undergoing evaluation. The complexity of the pathogenesis of AMR and cAMR suggest that multiple approaches will probably be required to treat these disease processes effectively. Definitive answers await results from large, double-blind, multicentre, randomized controlled clinical trials.
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Transplante de Rim , Humanos , Rejeição de Enxerto/prevenção & controle , Rejeição de Enxerto/tratamento farmacológico , Transplante Homólogo , Imunoglobulinas , Aloenxertos , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
Presurgical anxiety is very common and is often treated with sedatives. Minimizing or avoiding sedation reduces the risk of sedation-related adverse events. Reducing sedation can increase early cognitive recovery and reduce time to discharge after surgery. The current case study is the first to explore the use of interactive eye-tracked VR as a nonpharmacologic anxiolytic customized for physically immobilized presurgery patients. Method: A 44-year-old female patient presenting for gallbladder surgery participated. Using a within-subject repeated measures design (treatment order randomized), the participant received no VR during one portion of her preoperative wait and interactive eye-tracked virtual reality during an equivalent portion of time in the presurgery room. After each condition (no VR vs. VR), the participant provided subjective 0-10 ratings and state-trait short form Y anxiety measures of the amount of anxiety and fear she experienced during that condition. Results: As predicted, compared to treatment as usual (no VR), the patient reported having 67% lower presurgical anxiety during VR. She also experienced "strong fear" (8 out of 10) during no VR vs. "no fear" (0 out of 10) during VR. She reported a strong sense of presence during VR and zero nausea. She liked VR, she had fun during VR, and she recommended VR to future patients during pre-op. Interactive VR distraction with eye tracking was an effective nonpharmacologic technique for reducing anticipatory fear and anxiety prior to surgery. The results add to existing evidence that supports the use of VR in perioperative settings. VR technology has recently become affordable and more user friendly, increasing the potential for widespread dissemination into medical practice. Although case studies are scientifically inconclusive by nature, they help identify new directions for future larger, carefully controlled studies. VR sedation is a promising non-drug fear and anxiety management technique meriting further investigation.
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Mitochondrial fatty acid oxidation (FAO) is lower in placentas with pre-eclampsia. The aim of our study was to compare the placental mRNA expression of FAO enzymes in healthy pregnancies vs. different subgroups of pre-eclampsia according to the severity, time of onset, and the presence of intrauterine growth restriction (IUGR). By using real-time qPCR, we measured the mRNA levels of long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD), medium-chain acyl-CoA dehydrogenase (MCAD), and carnitine palmitoyltransferases 1A and 2 (CPT1A, CPT2) on the maternal side (anchoring villi in the basal decidua) and on the fetal side (chorionic plate) of the placenta (n = 56). When compared to the controls, LCHAD, MCAD, and CPT2 mRNA had decreased in all pre-eclampsia subgroups globally and on the fetal side. On the maternal side, LCHAD mRNA was also lower in all pre-eclampsia subgroups; however, MCAD and CPT2 mRNA were only reduced in severe and early-onset disease, as well as CPT2 in IUGR (p < 0.05). There were no differences in CPT1A mRNA expression. We conclude that the FAO enzymes mRNA in the placenta was lower in pre-eclampsia, with higher reductions observed in severe, early-onset, and IUGR cases and more striking reductions on the fetal side.
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Retardo do Crescimento Fetal , Pré-Eclâmpsia , Gravidez , Humanos , Feminino , Retardo do Crescimento Fetal/genética , Pré-Eclâmpsia/genética , Placenta , Acil-CoA Desidrogenase , Expressão Gênica , Ácidos GraxosRESUMO
BACKGROUND AND PURPOSE: disease-modifying treatments (DMT) for Multiple Sclerosis (MS) have expanded in recent years making the shared-decision process challenging. Moreover, no head-to-head studies are available within the first-line options. Our aim is to compare therapeutic persistence within first-line DMT: teriflunomide (TER), dimethyl fumarate (DMF), and injectable drugs (INJ) in a real-world setting. METHODS: Retrospective observational study analyzing diagnosed with Relapsing-Remitting Multiple Sclerosis (RRMS) who started DMT between January 2015 and April 2022 (TER=117, DMF=117, INJ=123). Clinical, radiological, and demographic variables were collected. The primary outcome was the median time to discontinuation of any DMT. Dropout was defined as discontinuation for 6 months for any reason. RESULTS: Of the total of 357 patients, 155 withdraw with a median time-to-discontinuation of 1.427 years (IQR 2.410). The discontinuation rate was higher in the injectable group, 49.6%; compared to teriflunomide 40.2%, and dimethyl fumarate 39.8% (p = 0.201). The most frequent reason of discontinuation differs within groups (lack of efficacy in TER, 63.8%, and adverse effects in DMF and INJ (40.4% and 40.9% respectively). No difference in persistence was observed between DMT (p = 0.30). After 2018 there has been a tendency to treat in a quick and early manner (lower EDSS; relapse rate and number of naïve patients), statistically significant for TER (p = 0.005, p = 0.010, and p = 0.045). CONCLUSIONS: Our study demonstrated no differences in persistence between the actual first-line DMT in a real-world setting, although a trend to favor oral-DMT was seen. Reasons for discontinuation differs within groups.
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Tauopathies are neurodegenerative diseases that involve the pathological accumulation of tau proteins; in this family are Alzheimer disease, corticobasal degeneration, and chronic traumatic encephalopathy, among others. Hypothesizing that reducing this accumulation could mitigate pathogenesis, we performed a cross-species genetic screen targeting 6,600 potentially druggable genes in human cells and Drosophila. We found and validated 83 hits in cells and further validated 11 hits in the mouse brain. Three of these hits (USP7, RNF130, and RNF149) converge on the C terminus of Hsc70-interacting protein (CHIP) to regulate tau levels, highlighting the role of CHIP in maintaining tau proteostasis in the brain. Knockdown of each of these three genes in adult tauopathy mice reduced tau levels and rescued the disease phenotypes. This study thus identifies several points of intervention to reduce tau levels and demonstrates that reduction of tau levels via regulation of this pathway is a viable therapeutic strategy for Alzheimer disease and other tauopathies.
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Tauopatias , Proteínas tau , Adulto , Animais , Humanos , Camundongos , Doença de Alzheimer/metabolismo , Encéfalo/metabolismo , Drosophila/metabolismo , Proteínas tau/genética , Proteínas tau/metabolismo , Tauopatias/tratamento farmacológico , Tauopatias/genética , Tauopatias/metabolismo , Peptidase 7 Específica de Ubiquitina/metabolismoRESUMO
Antiangiogenic factors are currently used for the prediction of preeclampsia. The present study aimed to evaluate the relationship between antiangiogenic factors and lipid and carbohydrate metabolism in maternal plasma and placenta. We analyzed 56 pregnant women, 30 healthy and 26 with preeclampsia (including early and late onset). We compared antiangiogenic factors soluble Fms-like Tyrosine Kinase-1 (sfLt-1), placental growth factor (PlGF), and soluble endoglin (sEng)), lipid and carbohydrate metabolism in maternal plasma, and lipid metabolism in the placenta from assays of fatty acid oxidation, fatty acid esterification, and triglyceride levels in all groups. Antiangiogenic factors sFlt-1, sFlt-1/PlGF ratio, and sEng showed a positive correlation with triglyceride, free fatty acid, and C-peptide maternal serum levels. However, there was no relationship between angiogenic factors and placental lipid metabolism parameters. Free fatty acids were predictive of elevated sFlt-1 and sEng, while C-peptide was predictive of an elevated sFlt1/PlGF ratio. The findings in this study generate a model to predict elevated antiangiogenic factor values and the relationship between them with different products of lipid and carbohydrate metabolism in maternal serum and placenta in preeclampsia.
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Pré-Eclâmpsia , Receptor 1 de Fatores de Crescimento do Endotélio Vascular , Indutores da Angiogênese/metabolismo , Peptídeo C/metabolismo , Endoglina/metabolismo , Metabolismo Energético , Ácidos Graxos/metabolismo , Feminino , Humanos , Lipídeos , Placenta/metabolismo , Fator de Crescimento Placentário/metabolismo , Gravidez , Triglicerídeos/metabolismo , Receptor 1 de Fatores de Crescimento do Endotélio Vascular/metabolismoRESUMO
Fanconi anemia (FA), a genetic DNA repair disorder characterized by marrow failure and cancer susceptibility. In FA mice, metformin improves blood counts and delays tumor development. We conducted a single institution study of metformin in nondiabetic patients with FA to determine feasibility and tolerability of metformin treatment and to assess for improvement in blood counts. Fourteen of 15 patients with at least 1 cytopenia (hemoglobin < 10 g/dL; platelet count < 100 000 cells/µL; or an absolute neutrophil count < 1000 cells/µL) were eligible to receive metformin for 6 months. Median patient age was 9.4 years (range 6.0-26.5 ). Thirteen of 14 subjects (93%) tolerated maximal dosing for age; 1 subject had dose reduction for grade 2 gastrointestinal symptoms. No subjects developed hypoglycemia or metabolic acidosis. No subjects had dose interruptions caused by toxicity, and no grade 3 or higher adverse events attributed to metformin were observed. Hematologic response based on modified Myelodysplastic Syndrome International Working Group criteria was observed in 4 of 13 evaluable patients (30.8%; 90% confidence interval, 11.3-57.3). Median time to response was 84.5 days (range 71-128 days). Responses were noted in neutrophils (n = 3), platelets (n = 1), and red blood cells (n = 1). No subjects met criteria for disease progression or relapse during treatment. Correlative studies explored potential mechanisms of metformin activity in FA. Plasma proteomics showed reduction in inflammatory pathways with metformin. Metformin is safe and tolerable in nondiabetic patients with FA and may provide therapeutic benefit. This trial was registered at as #NCT03398824.
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Anemia de Fanconi , Metformina , Criança , Anemia de Fanconi/tratamento farmacológico , Anemia de Fanconi/genética , Humanos , Metformina/uso terapêutico , Adulto JovemRESUMO
In the last years, therapeutic decisions in multiple sclerosis (MS) have become challenging due to expanded options with different treatment profiles attending to efficacy, safety, and route and frequency of administration. Moreover, patients with multiple sclerosis (PwMS) increasingly wish to be involved in their therapeutic decision process. Therefore, a new, patient-centric shared decision model (SDM), is gaining relevance. However, validated scales oriented to assess the quality of the process itself are lacking. The AGA-25 scale is a fit-for-purpose 25-item scale based on two validated scales in MS (Treatment Satisfaction Questionnaire for Medication (TSQM) and Decisional Conflict Scale (DCS)). The aim of this work is to develop and validate the AGAS-25 in Spanish. Two hundred and three PwMS (aged 17 to 67; 155 [76.4%] females) undergoing stable disease modifying treatment in the last 6 months were consecutively recruited. The Principal Component Analysis suggested a four-factor structure for the 25-item version of the questionnaire: 1) satisfaction with the SDM process 2) adverse events with the DMT, 3) convenience of the chosen-DMT and 4) information reliability. The internal consistency of the measurement was adequate (Cronbach's alpha = 0.88). Our results support the use of the AGAS-25 scale to assist SDM in Spanish-speaking PwMS.
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Esclerose Múltipla , Feminino , Humanos , Masculino , Esclerose Múltipla/tratamento farmacológico , Pacientes , Psicometria , Reprodutibilidade dos Testes , Inquéritos e QuestionáriosRESUMO
Healthcare professionals, especially women, have shown increases in anxious-depressive symptoms as a consequence of the COVID-19 pandemic. The aim of this pilot study was to evaluate the acceptability and preliminary effectiveness of a Unified Protocol (UP) prevention program to provide emotional regulation skills to cope with stressful situations. The sample consisted of 27 nursing professionals (100% women; mean age: 45.67; SD = 7.71) working in a Spanish public hospital during COVID-19, who were randomized to an immediate treatment group (ITG, n = 13) or to a delayed treatment group (DTG, n = 14, which served as the waiting list control group and received the program 5 weeks after the ITG had received it). The program consisted of five-weekly, two-hour, UP-based group sessions. Variables related to emotional symptomatology, emotional regulation, personality, burnout, and perceived quality of life were evaluated at the following time points: pre- and post-intervention and at 1-, 3-, and 6-month follow-ups. Statistically significant between-group differences showed lower emotional exhaustion and personal accomplishment in favor of the ITG after the intervention. Regarding the effect over time for all participants who received the UP (n = 27), statistically significant reductions were observed in neuroticism, personal accomplishment, and subjective distress caused by traumatic events (-0.23 ≤ d ≤ -0.73). A statistically significant interaction "Time*Condition" was found in anxiety, with increases in the DTG. Participants showed high satisfaction with the UP. These findings show good acceptability and preliminary effectiveness of the UP to reduce the emotional impact of the pandemic in female nursing workers.
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COVID-19 , Regulação Emocional , COVID-19/epidemiologia , COVID-19/prevenção & controle , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pandemias/prevenção & controle , Projetos Piloto , Qualidade de Vida , SARS-CoV-2RESUMO
BACKGROUND: CUIDA-TE is an APP that offers transdiagnostic cognitive behavioral therapy focused on enhancing emotion regulation. As a novelty, it incorporates ecological momentary interventions (EMI), which can provide psychological support in real time, when suffering arises. The main goal of the study is to evaluate the efficacy of CUIDA-TE to improve emotion regulation in healthcare workers, a population that has been particularly emotionally impacted by the COVID-19 pandemic. METHODS: In this three-arm, randomized controlled trial (RCT) the study sample will be composed of a minimum of 174 healthcare workers. They will be randomly assigned to a 2-month EMI group (CUIDA-TE APP, n ≥ 58), a 2-month ecological momentary assessment (EMA) only group (MONITOR EMOCIONAL APP, n ≥ 58), or a wait-list control group (no daily monitoring nor intervention, n ≥ 58). CUIDA-TE will provide EMI if EMA reveals emotional problems, poor sleep quality/quantity, burnout, stress, or low perceived self-efficacy when regulating emotions. Depression will be the primary outcome. Secondary outcomes will include emotion regulation, quality of life, and resilience. Treatment acceptance and usability will also be measured. Primary and secondary outcomes will be obtained at pre- and post-intervention measurements, and at the 3-month follow-up for all groups. DISCUSSION: To our knowledge, this is the first RCT that evaluates the efficacy of an APP-based EMI to improve emotion regulation skills in healthcare workers. This type of intervention might ultimately help disseminate treatments and reach a larger number of individuals than traditional face-to-face individual therapies. TRIAL REGISTRATION: ClinicalTrial.gov : NCT04958941 Registered 7 Jun 2021. STUDY STATUS: Participant recruitment has not started.
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COVID-19 , Regulação Emocional , Pessoal de Saúde , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , SARS-CoV-2 , Smartphone , Resultado do TratamentoRESUMO
BACKGROUND: The Unified Protocol (UP) for the transdiagnostic treatment of emotional disorders (EDs) has demonstrated its efficacy in improving dimensions shared by EDs, but there is insufficient evidence regarding the specific symptoms of each ED. The main objective of the study was to evaluate the efficacy of the UP applied in a group format compared with individual Treatment as Usual (TAU), in improving specific ED symptoms. METHODS: The study sample (n=243) was a subset of participants of a randomized controlled trial conducted in the Spanish public health system. Specific symptoms assessed from pre-treatment to the six-month follow-up were: depressive, agoraphobic, generalized anxiety, panic, and obsessive-compulsive symptoms. Personality dimensions and quality of life were also measured. RESULTS: There were statistically significant changes after the UP in all the study variables (0.44 = d = 1.35). Changes in depressive symptoms, obsessive-compulsive disorder, and perceived quality of life were superior in the UP. CONCLUSIONS: The results support the efficacy of group UP for improving both transdiagnostic dimensions and specific ED symptoms, as well as quality of life, through the public health-care system.
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Terapia Cognitivo-Comportamental , Qualidade de Vida , Transtornos de Ansiedade , Humanos , Saúde Pública , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do TratamentoRESUMO
Emotional dysregulation is a key factor in the development and maintenance of multiple disabling mental disorders through a person's lifespan. Therefore, there is an urgent need to prevent emotional dysregulation as early as possible. The main aim of this study was to evaluate the acceptability and preliminary effectiveness of an adapted Dialectical Behavior Therapy Skills Training program for Emotional Problem Solving in Adolescents (DBT STEPS-A) during secondary school. The sample included 93 adolescents (mean age = 12.78; SD = 0.54; and 53% female) studying in their 2nd year of secondary school in a public center in Catalonia (Spain). Measures of acceptability, difficulties of emotional regulation, mental health problems, and life satisfaction were completed before and after participation in the DBT STEPS-A program during one academic year. The majority of students rated the program as useful (64%) and enjoyed the classes (62%) and 48% of them reported practicing the newly learned skills. Statistically significant improvements were revealed in some emotional regulation-related variables, namely the number of peer problems (p = 0.003; d = 0.52) and prosocial behaviors (p < 0.001; d = -0.82). Although non-significant, the scores in the remaining outcomes indicated a general positive trend in emotional dysregulation, mental health, and life satisfaction. The adapted DBT STEPS-A was very well-accepted and helped overcome some emotional regulation difficulties in Spanish adolescents.
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Terapia do Comportamento Dialético , Transtornos Mentais , Adolescente , Criança , Emoções , Feminino , Humanos , Masculino , Transtornos Mentais/prevenção & controle , Instituições Acadêmicas , EstudantesRESUMO
Formic acid is an advantageous liquid organic hydrogen carrier. It is relatively nontoxic and can be synthesized by the reaction of CO2 with sustainable hydrogen or by biomass decomposition. As an alternative to more widely studied powdery catalysts, supported Pd-C catalytic thin films with controlled nanostructure and compositions were newly prepared in this work by magnetron sputtering on structured supports and tested for the formic acid decomposition reaction. A two-magnetron configuration (carbon and tailored Pd-C targets) was used to achieve a reduction in Pd consumption and high catalyst surface roughness and dispersion by increasing the carbon content. Activity and durability tests were carried out for the gas phase formic acid decomposition reaction on SiC foam monoliths coated with the Pd-C films and the effects of column width, surface roughness and thermal pre-reduction time were investigated. Activity of 5.04 molH2·gPd-1·h-1 and 92% selectivity to the dehydrogenation reaction were achieved at 300 °C for the catalyst with a lower column width and higher carbon content and surface roughness. It was also found that deactivation occurs when Pd is sintered due to the elimination of carbon and/or the segregation and agglomeration of Pd upon cycling. Magnetron sputtering deposition appears as a promising and scalable route for the one-step preparation of Pd-C catalytic films by overcoming the different deposition characteristics of Pd and C with an appropriate experimental design.
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(1) Background: Pleiotrophin preserves insulin sensitivity, regulates adipose tissue lipid turnover and plasticity, energy metabolism and thermogenesis. The aim of this study was to determine the role of pleiotrophin in hepatic lipid metabolism and in the metabolic crosstalk between the liver and brown and white adipose tissue (AT) in a high-fat diet-induced (HFD) obesity mice model. (2) Methods: We analyzed circulating variables, lipid metabolism (hepatic lipid content and mRNA expression), brown AT thermogenesis (UCP-1 expression) and periovarian AT browning (brown adipocyte markers mRNA and immunodetection) in Ptn-/- mice either fed with standard-chow diet or with HFD and in their corresponding Ptn+/+ counterparts. (3) Results: HFD-Ptn-/- mice are protected against the development of HFD-induced insulin resistance, had lower liver lipid content and lower expression of the key enzymes involved in triacylglycerides and fatty acid synthesis in liver. HFD-Ptn-/- mice showed higher UCP-1 expression in brown AT. Moreover, Ptn deletion increased the expression of specific markers of brown/beige adipocytes and was associated with the immunodetection of UCP-1 enriched multilocular adipocytes in periovarian AT. (4) Conclusions: Ptn deletion protects against the development of HFD-induced insulin resistance and liver steatosis, by increasing UCP-1 expression in brown AT and promoting periovarian AT browning.
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Tecido Adiposo Marrom/metabolismo , Citocinas/deficiência , Dieta Hiperlipídica/efeitos adversos , Suscetibilidade a Doenças , Fígado Gorduroso/etiologia , Fígado Gorduroso/metabolismo , Tecido Adiposo Branco/metabolismo , Animais , Biomarcadores , Proteínas de Transporte , Modelos Animais de Doenças , Metabolismo Energético , Fígado Gorduroso/patologia , Expressão Gênica , Fígado/metabolismo , Fígado/patologia , Camundongos , Camundongos Knockout , Tamanho do Órgão , Proteína Desacopladora 1/genética , Proteína Desacopladora 1/metabolismoRESUMO
Pleiotrophin (PTN) is a neurotrophic factor that regulates glial responses in animal models of different types of central nervous system (CNS) injuries. PTN is upregulated in the brain in different pathologies characterized by exacerbated neuroinflammation, including Parkinson's disease. PTN is an endogenous inhibitor of Receptor Protein Tyrosine Phosphatase (RPTP) ß/ζ, which is abundantly expressed in the CNS. Using a specific inhibitor of RPTPß/ζ (MY10), we aimed to assess whether the PTN/RPTPß/ζ axis is involved in neuronal and glial injury induced by the toxin MPP+. Treatment with the RPTPß/ζ inhibitor MY10 alone decreased the viability of both SH-SY5Y neuroblastoma cells and BV2 microglial cultures, suggesting that normal RPTPß/ζ function is involved in neuronal and microglial viability. We observed that PTN partially decreased the cytotoxicity induced by MPP+ in SH-SY5Y cells underpinning the neuroprotective function of PTN. However, MY10 did not seem to modulate the SH-SY5Y cell loss induced by MPP+. Interestingly, we observed that media from SH-SY5Y cells treated with MPP+ and MY10 decreases microglial viability but may elicit a neuroprotective response of microglia by upregulating Ptn expression. The data suggest a neurotrophic role of microglia in response to neuronal injury through upregulation of Ptn levels.
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Proteínas de Transporte/metabolismo , Comunicação Celular , Citocinas/metabolismo , Microglia/metabolismo , Neurônios/metabolismo , Doença de Parkinson/metabolismo , Proteínas Tirosina Fosfatases Classe 5 Semelhantes a Receptores/metabolismo , Animais , Humanos , Inflamação/metabolismo , Inflamação/fisiopatologia , Camundongos , Microglia/fisiologia , Modelos Biológicos , Neurônios/fisiologia , Doença de Parkinson/fisiopatologia , Proteínas Tirosina Fosfatases Classe 5 Semelhantes a Receptores/fisiologia , Transdução de SinaisRESUMO
Background: Social distancing restrictions imposed due to the Novel Coronavirus 2019 (COVID-19) pandemic resulted in a rapid shift in the delivery of psychological interventions from in-person to telehealth. Much of the research on this transition has been conducted with English-speaking mental health providers, leaving a gap in understanding related to how this shift has impacted Spanish-speaking treatment providers. Methods: Fifty non-U.S. Spanish-speaking therapists completed a survey related to their use of telecommunication modalities; client population characteristics; professional, ethical, and legal/regulatory issues; and telehealth training and practice. Participants completed the survey at one time point and retrospectively described their use of telehealth both pre-pandemic and during the pandemic. Results: Most of the 50 Spanish-speaking therapists surveyed reported using telepsychology 58% before COVID-19 versus 84% during the COVID-19 pandemic (χ2 = 5.76, p < 0.05). Compared with pre-pandemic, the number of hours therapists spent using telepsychology per week increased significantly for early adopter therapists (those who began using telehealth before the pandemic began) (Z = -3.18, p = 0.001) and also for late adopter therapists who only began using telehealth during the pandemic (Z = -3.74, p < 0.001). Many therapists reported equity issues. Most participants also reported ethical and regulatory concerns regarding security/confidentiality or Health Insurance Porability and Accountability Act. Conclusions: The rapid adoption of technology to deliver therapy during COVID-19 has spurred growing pains for Spanish-speaking therapists and their underserved clients, and more research is needed to better understand and improve the therapists' adoption of these technologies with diverse patient populations.
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COVID-19 , Telemedicina , Realidade Virtual , Humanos , Pandemias , Estudos Retrospectivos , SARS-CoV-2RESUMO
Most research on neurodegenerative diseases has focused on neurons, yet glia help form and maintain the synapses whose loss is so prominent in these conditions. To investigate the contributions of glia to Huntington's disease (HD), we profiled the gene expression alterations of Drosophila expressing human mutant Huntingtin (mHTT) in either glia or neurons and compared these changes to what is observed in HD human and HD mice striata. A large portion of conserved genes are concordantly dysregulated across the three species; we tested these genes in a high-throughput behavioral assay and found that downregulation of genes involved in synapse assembly mitigated pathogenesis and behavioral deficits. To our surprise, reducing dNRXN3 function in glia was sufficient to improve the phenotype of flies expressing mHTT in neurons, suggesting that mHTT's toxic effects in glia ramify throughout the brain. This supports a model in which dampening synaptic function is protective because it attenuates the excitotoxicity that characterizes HD.
When a neuron dies, through injury or disease, the body loses all communication that passes through it. The brain compensates by rerouting the flow of information through other neurons in the network. Eventually, if the loss of neurons becomes too great, compensation becomes impossible. This process happens in Alzheimer's, Parkinson's, and Huntington's disease. In the case of Huntington's disease, the cause is mutation to a single gene known as huntingtin. The mutation is present in every cell in the body but causes particular damage to parts of the brain involved in mood, thinking and movement. Neurons and other cells respond to mutations in the huntingtin gene by turning the activities of other genes up or down, but it is not clear whether all of these changes contribute to the damage seen in Huntington's disease. In fact, it is possible that some of the changes are a result of the brain trying to protect itself. So far, most research on this subject has focused on neurons because the huntingtin gene plays a role in maintaining healthy neuronal connections. But, given that all cells carry the mutated gene, it is likely that other cells are also involved. The glia are a diverse group of cells that support the brain, providing care and sustenance to neurons. These cells have a known role in maintaining the connections between neurons and may also have play a role in either causing or correcting the damage seen in Huntington's disease. The aim of Onur et al. was to find out which genes are affected by having a mutant huntingtin gene in neurons or glia, and whether severity of Huntington's disease improved or worsened when the activity of these genes changed. First, Onur et al. identified genes affected by mutant huntingtin by comparing healthy human brains to the brains of people with Huntington's disease. Repeating the same comparison in mice and fruit flies identified genes affected in the same way across all three species, revealing that, in Huntington's disease, the brain dials down glial cell genes involved in maintaining neuronal connections. To find out how these changes in gene activity affect disease severity and progression, Onur et al. manipulated the activity of each of the genes they had identified in fruit flies that carried mutant versions of huntingtin either in neurons, in glial cells or in both cell types. They then filmed the flies to see the effects of the manipulation on movement behaviors, which are affected by Huntington's disease. This revealed that purposely lowering the activity of the glial genes involved in maintaining connections between neurons improved the symptoms of the disease, but only in flies who had mutant huntingtin in their glial cells. This indicates that the drop in activity of these genes observed in Huntington's disease is the brain trying to protect itself. This work suggests that it is important to include glial cells in studies of neurological disorders. It also highlights the fact that changes in gene expression as a result of a disease are not always bad. Many alterations are compensatory, and try to either make up for or protect cells affected by the disease. Therefore, it may be important to consider whether drugs designed to treat a condition by changing levels of gene activity might undo some of the body's natural protection. Working out which changes drive disease and which changes are protective will be essential for designing effective treatments.
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Encéfalo/metabolismo , Proteínas de Drosophila/metabolismo , Sinapses Elétricas/metabolismo , Proteína Huntingtina/metabolismo , Doença de Huntington/metabolismo , Neuroglia/metabolismo , Transmissão Sináptica , Animais , Comportamento Animal , Encéfalo/patologia , Encéfalo/fisiopatologia , Estudos de Casos e Controles , Moléculas de Adesão Celular Neuronais/genética , Moléculas de Adesão Celular Neuronais/metabolismo , Linhagem Celular , Modelos Animais de Doenças , Proteínas de Drosophila/genética , Drosophila melanogaster , Sinapses Elétricas/patologia , Feminino , Redes Reguladoras de Genes , Humanos , Proteína Huntingtina/genética , Doença de Huntington/genética , Doença de Huntington/patologia , Doença de Huntington/fisiopatologia , Locomoção , Masculino , Camundongos Transgênicos , Mutação , Neuroglia/patologia , Transcriptoma , alfa 1-Antitripsina/genética , alfa 1-Antitripsina/metabolismoRESUMO
Before COVID-19, most therapists had concerns about telepsychology, and only treated patients in person. During the COVID-19 lockdown, patients still needed therapy, but in-person therapy sessions became unsafe. The current study measured how many therapists are using online therapy before vs. during COVID-19, how much training they have received, and their knowledge about legal restrictions on using telepsychology. A sample of 768 U.S.A. mental health professionals completed a 29-item online survey. Results show that before COVID-19, most therapists only saw their patients in person (e.g., at the therapists office), but during the COVID-19 pandemic, nearly all therapists used a wide range of telecommunication technologies to communicate with their quarantined patients, including texting, telephones, video conferences, and even virtual reality. According to within-subject related samples comparisons, 39% of survey respondents used telepsychology before COVID-19, vs. 98% during COVID-19 (χ2 = 450.02, p< 0.001). Therapists reported high treatment effectiveness using telepsychology (7.45 on 0-10 scale). However, overall, on a 0-10 scale, therapists reported a significant increase in feeling burned out during the COVID-19 pandemic, Mean = 3.93 (SD = 1.93) before vs. 6.22 (SD = 2.27) during the pandemic (Z = -18.57, p < 0.001). Although the APA ethics guidelines encourage therapists to use telepsychology with their patients during the crisis, gaps in respondents' knowledge identify a need for increased specialized training and education. Although the current study showed that virtual reality is rarely used by the therapists surveyed, virtual reality is a promising new telepsychology technology. Billions of dollars are currently being invested in mass producing immersive virtual reality systems. In the future, as networked immersive Virtual Reality becomes more widely available, therapists and patients in physically different locations will be able to "meet" in a shared computer-generated world designed for therapy sessions, potentially including group sessions. Telepsychology and virtual reality have the potential to be increasingly valuable tools to help therapists mitigate the consequences of COVID-19. Research, development and training is recommended.