Aging astrocytes metabolically support aging axon function by proficiently regulating astrocyte-neuron lactate shuttle.

The astrocyte-neuron lactate shuttle (ANLS) is an essential metabolic support system that uptakes glucose, stores it as glycogen in astrocytes, and provides glycogen-derived lactate for axonal function. Aging intrinsically increases the vulnerability of white matter (WM) to injury. Therefore, we investigated the regulation of this shuttle to understand vascular-glial metabolic coupling to support axonal function during aging in two different WM tracts. Aging astrocytes displayed larger cell bodies and thicker horizontal processes in contrast to thinner vertically oriented processes of young astrocytes. Aging axons recovered less following aglycemia in mouse optic nerves (MONs) compared to young axons, although providing lactate during aglycemia equally supported young and aging axonal function. Incubating MONs in high glucose to upregulate glycogen stores in astrocytes delayed loss of function during aglycemia and improved recovery in both young and aging axons. Providing lactate during recovery from aglycemia unmasked a metabolic switch from glucose to lactate in aging axons. Young and aging corpus callosum consisting of a mixture of myelinated and unmyelinated axons sustained their function fully when lactate was available during aglycemia and surprisingly showed a greater resilience to aglycemia compared to fully myelinated axons of optic nerve. We conclude that lactate is a universal substrate for axons independent of their myelination content and age.

Patient Experience in Virtual Visits Hinges on Technology and the Patient-Clinician Relationship: A Large Survey Study With Open-ended Questions.

BACKGROUND: Patient satisfaction with in-person medical visits includes patient-clinician engagement. However, communication, empathy, and other relationship-centered care measures in virtual visits have not been adequately investigated. OBJECTIVE: This study aims to comprehensively consider patient experience, including relationship-centered care measures, to assess patient satisfaction during virtual visits. METHODS: We conducted a large survey study with open-ended questions to comprehensively assess patients' experiences with virtual visits in a diverse patient population. Adults with a virtual visit between June 21, 2017, and July 12, 2017, were invited to complete a survey of 21 Likert-scale items and textboxes for comments following their visit. Factor analysis of the survey items revealed three factors: experience with technology, patient-clinician engagement, and overall satisfaction. Multivariable logistic regression was used to test the associations among the three factors and patient demographics, clinician type, and prior relationship with the clinician. Using qualitative framework analysis, we identified recurrent themes in survey comments, quantitatively coded comments, and computed descriptive statistics of the coded comments. RESULTS: A total of 65.7% (426/648) of the patients completed the survey; 64.1% (273/426) of the respondents were women, and the average age was 46 (range 18-86) years. The sample was geographically diverse: 70.2% (299/426) from Ohio, 6.8% (29/426) from Florida, 4.2% (18/426) from Pennsylvania, and 18.7% (80/426) from other states. With regard to insurance coverage, 57.5% (245/426) were undetermined, 23.7% (101/426) had the hospital's employee health insurance, and 18.7% (80/426) had other private insurance. Types of virtual visits and clinicians varied. Overall, 58.4% (249/426) of patients had an on-demand visit, whereas 41.5% (177/426) had a scheduled visit. A total of 41.8% (178/426) of patients had a virtual visit with a family physician, 20.9% (89/426) with an advanced practice provider, and the rest had a visit with a specialist. Most patients (393/423, 92.9%) agreed that their virtual visit clinician was interested in them as a person, and their virtual visit made it easy to get the care they needed (383/421, 90.9%). A total of 81.9% (344/420) of respondents agreed or strongly agreed that their virtual visit was as good as an in-person visit by a clinician. Having a prior relationship with their virtual visit clinician was associated with less comfort and ease with virtual technology among patients (odds ratio 0.58, 95% CI 0.35-0.98). In terms of technology, patients found the interface easy to use (392/423, 92.7%) and felt comfortable using it (401/423, 94.8%). Technical difficulties were associated with lower odds of overall satisfaction (odds ratio 0.46, 95% CI 0.28-0.76). CONCLUSIONS: Patient-clinician engagement in virtual visits was comparable with in-person visits. This study supports the value and acceptance of virtual visits. Evaluations of virtual visits should include assessments of technology and patient-clinician engagement, as both are likely to influence patient satisfaction.

Perspectives on illness-related stigma and electronically sharing psychiatric health information by people with multiple sclerosis.

BACKGROUND: Electronic medical records (EMRs) facilitate more integrated and comprehensive care. Despite this, EMRs are used less frequently in psychiatry compared to other medical disciplines, in part due to concerns regarding stigma surrounding mental health. This paper explores the willingness to share medical information among patients with multiple sclerosis (MS), who experience higher rates of psychiatric comorbidities compared to the general population, and the role that stigma plays in patient preferences. METHODS: MS patients were surveyed about their co-occurring psychiatric and non-psychiatric diagnoses, willingness to share their health information electronically among their treating doctors, and levels of self and societal stigma associated with their diagnoses. RESULTS: Participants were slightly more willing to share their non-psychiatric medical information vs. psychiatric information. Despite the presence of stigma decreasing patient willingness to share medical records, those with psychiatric co-occurring disorders, compared to those without, endorsed significantly greater willingness to electronically share their health records. The majority of diagnoses for which participants experienced the greatest difference in self vs. societal stigmas were psychiatric ones, including substance use, eating and mood disorders. Societal stigma strongly correlated with decreased non-psychiatric medication sharing, while self stigma was strongly correlated with decreased psychiatric medications sharing. LIMITATIONS: Standardized scales were not used to assess patient stigma and there is a potential lack of generalizability of results beyond patients with MS. CONCLUSIONS: These insights into patient preferences toward sharing their medical information should inform decisions to implement EMRs, particularly for patient populations experiencing higher than average levels of psychiatric comorbidities.

Perception on facilitators and benefits of participation in body practice groups / Percepção sobre os facilitadores e os benefícios da participação em grupos de práticas corporais

Abstract The practice of physical activity has been considered as an important factor in the area of public health, as it helps in the prevention and treatment of various diseases. Thus, understanding the facilitators for participation and benefits from healthy lifestyle can contribute to population awareness. The aim of this study was to analyze facilitators for body practice and benefits perceived by participants of body practice groups of two basic family health units of Santa Rosa/RS. This qualitative research included 25 participants. Data were obtained by the focal group technique. Motivation/incentive, mainly linked to family support, the pedagogical practice of the Physical Education professional, good health status and social life were aspects considered facilitators for adherence to body practice groups. Physical and psychological gains, prevention and control of diseases, lifestyle changes, cognitive improvement and decreased use of medications were pointed as benefits. Motivating participants to participate in body practice programs is an important factor for adherence and participation in these activities can provide biopsychosocial benefits that can contribute to health promotion and quality of life of users of basic family health units.

Resumo A prática de atividade física vem sendo tratada como um fator importante na área da saúde pública, pois pode auxiliar na prevenção e no tratamento de diversas doenças. Para isso, entender sobre os facilitadores para a participação e os benefícios a partir de um estilo de vida saudável pode contribuir para a conscientização da população. Objetivou-se analisar os facilitadores para à prática corporal e os benefícios percebidos pelos participantes do grupo de prática corporal de duas unidades básicas de saúde da família de Santa Rosa/RS. Pesquisa qualitativa, com 25 participantes. Os dados foram obtidos pela técnica do grupo focal. Revelaram-se como facilitadores para a adesão a grupos de prática corporal a motivação/incentivo, ligado principalmente ao apoio familiar, a prática pedagógica do profissional de Educação Física, ser saudável e o convívio social. Foram apontados como benefícios ganhos físicos e psicológicos, a prevenção e controle de doenças, mudanças de estilo de vida, a melhora cognitiva e a diminuição do uso de medicamentos. Motivar os participantes dos programas de práticas corporais é um fator importante para a adesão aos grupos e a participação nessas atividades pode proporcionar benefícios biopsicossociais que podem contribuir com a promoção da saúde e na qualidade de vida de usuários de unidades básicas de saúde.

Role of Brain Glycogen During Ischemia, Aging and Cell-to-Cell Interactions.

The astrocyte-neuron lactate transfer shuttle (ANLS) is one of the important metabolic systems that provides a physiological infrastructure for glia-neuronal interactions where specialized architectural organization supports the function. Perivascular astrocyte end-feet take up glucose via glucose transporter 1 to actively regulate glycogen stores, such that high ambient glucose upregulates glycogen and low levels of glucose deplete glycogen stores. A rapid breakdown of glycogen into lactate during increased neuronal activity or low glucose conditions becomes essential for maintaining axon function. However, it fails to benefit axon function during an ischemic episode in white matter (WM). Aging causes a remarkable change in astrocyte architecture characterized by thicker, larger processes oriented parallel to axons, as opposed to vertically-transposing processes. Subsequently, aging axons become more vulnerable to depleted glycogen, although aging axons can use lactate as efficiently as young axons. Lactate equally supports function during aglycemia in corpus callosum (CC), which consists of a mixture of myelinated and unmyelinated axons. Moreover, axon function in CC shows greater resilience to a lack of glucose compared to optic nerve, although both WM tracts show identical recovery after aglycemic injury. Interestingly, emerging evidence implies that a lactate transport system is not exclusive to astrocytes, as oligodendrocytes support the axons they myelinate, suggesting another metabolic coupling pathway in WM. Future studies are expected to unravel the details of oligodendrocyte-axon lactate metabolic coupling to establish that all WM components metabolically cooperate and that lactate may be the universal metabolite to sustain central nervous system function.

Defense Automated Neurobehavioral Assessment Accurately Measures Cognition in Patients Undergoing Electroconvulsive Therapy for Major Depressive Disorder.

OBJECTIVES: The Defense Automated Neurobehavioral Assessment (DANA) is an electronic cognitive test battery. The present study compares DANA to the standard Mini-Mental State Examination (MMSE) in subjects undergoing electroconvulsive therapy for the treatment of major depressive disorder. METHODS: Seventeen inpatient subjects in the Johns Hopkins Hospital Department of Psychiatry were administered longitudinal paired DANA and MMSE tests (7.6 ± 4.1 per patient) from January 10, 2014 to September 26, 2014. Regression analyses were conducted (with or without MMSE scores of 30) to study the impact of the MMSE upper limit, and within-subject regression analyses were conducted to compare MMSE and DANA scores over time. RESULTS: Statistically significant relationships were measured between DANA and MMSE scores. Relationships strengthened when MMSE scores of 30 were omitted from analyses, demonstrating a ceiling effect of the MMSE. Within-subject analyses revealed relationships between MMSE and DANA scores over the duration of the inpatient stay. CONCLUSIONS: Defense Automated Neurobehavioral Assessment is an electronic, mobile, repeatable, sensitive, and valid method of measuring cognition over time in depressed patients undergoing electroconvulsive therapy treatment. Automation of the DANA allows for more frequent cognitive testing in a busy clinical setting and enhances cognitive assessment sensitivity with a timed component to each test.