Ectopic Expression of Neurod1 Is Sufficient for Functional Recovery following a Sensory-Motor Cortical Stroke.

Stroke is the leading cause of adult disability worldwide. The majority of stroke survivors are left with devastating functional impairments for which few treatment options exist. Recently, a number of studies have used ectopic expression of transcription factors that direct neuronal cell fate with the intention of converting astrocytes to neurons in various models of brain injury and disease. While there have been reports that question whether astrocyte-to-neuron conversion occurs in vivo, here, we have asked if ectopic expression of the transcription factor Neurod1 is sufficient to promote improved functional outcomes when delivered in the subacute phase following endothelin-1-induced sensory-motor cortex stroke. We used an adeno-associated virus to deliver Neurod1 from the short GFAP promoter and demonstrated improved functional outcomes as early as 28 days post-stroke and persisting to at least 63 days post-stroke. Using Cre-based cell fate tracking, we showed that functional recovery correlated with the expression of neuronal markers in transduced cells by 28 days post-stroke. By 63 days post-stroke, the reporter-expressing cells comprised ~20% of all the neurons in the perilesional cortex and expressed markers of cortical neuron subtypes. Overall, our findings indicate that ectopic expression of Neurod1 in the stroke-injured brain is sufficient to enhance neural repair.

Metformin treatment reduces inflammation, dysmyelination and disease severity in a mouse model of multiple sclerosis, experimental autoimmune encephalomyelitis.

Multiple sclerosis (MS) is an autoimmune disease characterized by inflammation, death or damage of oligodendrocytes, and axonal degeneration. Current MS treatments are non-curative, associated with undesired side-effects, and expensive, highlighting the need for expanded therapeutic options for patients. There is great interest in developing interventions using drugs or therapeutics to reduce symptom onset and protect pre-existing myelin. Metformin is a well-tolerated drug used to treat Type 2 diabetes that has pleiotropic effects in the central nervous system (CNS), including reducing inflammation, enhancing oligodendrogenesis, increasing the survival/proliferation of neural stem cells (NSCs), and increasing myelination. Here, we investigated whether metformin administration could improve functional outcomes, modulate oligodendrocyte precursor cells (OPCs), and reduce inflammation in a well-established mouse model of MS- experimental autoimmune encephalomyelitis (EAE). Male and female mice received metformin treatment at the time of EAE induction ("acute") or upon presentation of disease symptoms ("delayed"). We found that acute metformin treatment improved functional outcomes, concomitant with reduced microglia numbers and decreased dysmyelination. Conversely, delayed metformin treatment did not improve functional outcomes. Our findings reveal that metformin administration can improve EAE outcomes when administered before symptom onset in both sexes.

Feasibility and Challenges with Measuring Adverse Childhood Experiences in the Pediatric Intensive Care Unit.

Purpose: The Adverse Childhood Experiences (ACEs) screening tool captures some experiences of childhood adversity, ranging from abuse to parental separation. Research has shown a correlation between ACEs and both adult and childhood disease. This study evaluated the feasibility of conducting ACE screening in the pediatric intensive care unit (PICU) and investigated associations with markers for severity of illness and utilization of resources. Methods: This was a cross sectional study screening for ACEs among children admitted to a single quaternary medical-surgical PICU. Children age 0-18 years old admitted to the PICU over a one-year period were considered for enrollment. A 10-question ACE screen was used to evaluate children for exposure to ACEs. Chart review was used to collect demographic and clinical data. Results: Of the 432 parents approached for enrollment, 400 (92.6%) agreed to participate. Most parents reported an ACE score of zero (68.9%) while 31% of participants experienced at least 1 ACE, of whom 14.8% experienced ≥ 2 ACEs. There was not a statistically significant association between ACE score and length of stay (p-value = 0.26) or level of respiratory support in patients with asthma (p-value = 0.15) or bronchiolitis (p-value = 0.83). The primary reasons for not approaching families were parent availability, non-English speaking parents, and social work concerns. Conclusions: This study demonstrates feasibility to collect sensitive psychosocial data in the PICU and highlights challenges to enrollment. Supplementary Information: The online version contains supplementary material available at 10.1007/s40653-023-00555-9.

Metformin Improves Functional Outcomes, Activates Neural Precursor Cells, and Modulates Microglia in a Sex-Dependent Manner After Spinal Cord Injury.

Spinal cord injury (SCI) results in devastating patient outcomes with few treatment options. A promising approach to improve outcomes following SCI involves the activation of endogenous precursor populations including neural stem and progenitor cells (NSPCs) which are located in the periventricular zone (PVZ), and oligodendrocyte precursor cells (OPCs) found throughout the parenchyma. In the adult spinal cord, resident NSPCs are primarily mitotically quiescent and aneurogenic, while OPCs contribute to ongoing oligodendrogenesis into adulthood. Each of these populations is responsive to SCI, increasing their proliferation and migration to the site of injury; however, their activation is not sufficient to support functional recovery. Previous work has shown that administration of the FDA-approved drug metformin is effective at promoting endogenous brain repair following injury, and this is correlated with enhanced NSPC activation. Here, we ask whether metformin can promote functional recovery and neural repair following SCI in both males and females. Our results reveal that acute, but not delayed metformin administration improves functional outcomes following SCI in both sexes. The functional improvement is concomitant with OPC activation and oligodendrogenesis. Our data also reveal sex-dependent effects of metformin following SCI with increased activation of NSPCs in females and reduced microglia activation in males. Taken together, these findings support metformin as a viable therapeutic strategy following SCI and highlight its pleiotropic effects in the spinal cord.

Toward a deeper understanding of food insecurity among college students: examining associations with emotional eating and biological sex.

OBJECTIVE: The present study sought to extend our understanding of food insecurity among college students, including aims to replicate the high prevalence of food insecurity among college student samples, examine the food insecurity - emotional eating association, and determine whether biological sex moderates this association. PARTICIPANTS: Participants included 232 students (82.3% female; 83.2% Caucasian) enrolled at a U.S. university. METHODS: Participants completed the Household Food Security Survey Module: Short Form and Emotional Eating Scale as part of a larger study. RESULTS: Of the participants, 37.5% reported food insecurity. Food insecurity was positively associated with emotional eating (B = 1.35, 95% CI[0.24, 2.48]), controlling for body mass index (BMI). The association was stronger for males (95% CI[1.07, 6.54]) than females (95% CI[-0.29, 2.07]). CONCLUSIONS: College students, particularly males, who experience food insecurity may be at greater risk for emotional eating. Future research should investigate risk factors linked to both food insecurity and emotional eating among college students.

Family-Centered Advance Care Planning: What Matters Most for Parents of Children with Rare Diseases.

Few studies have described the goals and wishes of parents caring for their children with rare diseases, specifically when children are unable to communicate their preferences directly. The purpose of this study was to describe the parent's understanding of their child's illness, goals of care, and what mattered most to their child from the parent's perspective. Six families completed a feasibility study of the FAmily CEntered (FACE)-Rare pACP intervention. Qualitative content analysis was performed on transcripts of videotaped responses to the Respecting Choices Next Steps pACP Conversation facilitated conversation guide about the goals of care. Codes were grouped into themes, with direct participant quotations representing the themes. Five themes emerged: getting out and moving freely; feeling included and engaged; managing symptoms and disease burden; coordinating care among many care team members; and managing today and planning for the future. In the context of pACP, families reported that what mattered most to their children included the freedom of movement and human connection and engagement, while parents strived to be effective caregivers and advocates for their child with a rare and severely disabling disease.

"You Have Made All the Loving Choices": Good Parent Praise in Pediatric Critical Care Conferences.

BACKGROUND AND OBJECTIVES: Parents' ideas about what it means to be a "good parent" to their seriously ill child influence parental decision-making. Little is known about when, why, and how clinicians offer good-parent praise or how parents react. Our objective was to describe clinicians' spontaneous use of good-parent praise statements to parents during PICU care conferences and how parents respond. METHODS: Single-center, cross-sectional review of 72 transcripts of audio-recorded PICU care conferences in a quaternary medical center. Qualitative analysis was conducted to code triggers for clinician good-parent statements and parent responses. RESULTS: Clinicians made at least one statement of good-parent praise in 32% of family conferences. Triggers for clinician statements of good-parent praise were categorized into 6 themes: decision making, gratitude to the clinical team, defense of parenting, parental body language, parental guilt, and intention to close the meeting. Parental responses to clinician statements of good-parent praise fell into 6 themes: acknowledgment, medical talk, deepening of feelings expressed in conversation, focusing on a decision, redirecting on the patient, and gratitude. CONCLUSIONS: Clinicians spontaneously praised parents for their role in being a good parent in less than one-third of family conferences. Clinician statements were triggered by verbal and nonverbal parental behaviors, a critical decision-making point in the conversation, and an intention to close the meeting. In response, parents frequently responded positively to the praise and often returned the gratitude or reflected on their feelings about caregiving for their child.

Lack of Exposure to Palliative Care Training for Black Residents: A Study of Schools With Highest and Lowest Percentages of Black Enrollment.

CONTEXT: The palliative medicine workforce lacks racial diversity with <5% of specialty Hospice and Palliative Medicine (HPM) fellows identifying as black. Little is known about black trainees' exposure to palliative care during their medical education. OBJECTIVES: To describe palliative care training for black students during medical school, residency, and fellowship training. METHODS: We conducted a cross-sectional descriptive study using Internet searches and phone communication in September 2019. We evaluated 24 medical schools in three predetermined categories: historically black colleges and universities (HBCUs; N = 4) and non-under-represented minority-serving institutions with the highest (N = 10) and lowest (N = 10) percentages of black medical students. Training opportunities were determined based on the presence of a course, clerkship, or rotation in the medical school and residency curricula, a specialty HPM fellowship program, and specialty palliative care consult service at affiliated teaching hospitals. RESULTS: None of the four HBCUs with a medical school offered a palliative care course or clerkship, rotation during residency, or specialty HPM fellowship program. Three of four HBCUs were affiliated with a hospital that had a palliative care consult service. Institutions with the highest black enrollment were less likely to offer palliative care rotations during internal medicine (P = 0.046) or family medicine (P = 0.019) residency training than those with the lowest black enrollment. CONCLUSION: Residents at schools with the highest black medical student enrollment lack access to palliative care training opportunities. Efforts to reduce health disparities and underrepresentation in palliative care must begin with providing palliative-focused training to physicians from under-represented minority backgrounds.

Shared spiritual beliefs between adolescents with cancer and their families.

BACKGROUND: FAmily CEntered (FACE) Advance Care Planning helps family decision makers to understand and honor patients' preferences for future health care, if patients cannot communicate. Spiritual well-being is a key domain of pediatric oncology care and an integral dimension of pediatric advance care planning. PROCEDURE: As part of four-site randomized controlled trial of FACE for teens with cancer, the functional assessment of chronic illness therapy-spiritual well-being- version 4 (FACIT-Sp-EX-4) was completed independently by 126 adolescents with cancer/family dyads. The prevalence-adjusted and bias-adjusted kappa (PABAK) measured congruence on FACIT-Sp-EX-4. RESULTS: Adolescents (126) had mean age of 16.9 years, were 57% female and 79% White. Religious/spiritual classifications were: Catholic (n = 18), Protestant (n = 76), Mormon (n = 3), none/atheist (n = 22), other (n = 5), and unknown (n = 2). Agreement at item level between spiritual well-being of adolescents and families was assessed. Three items had ≥90% agreement and Excellent PABAK: "I have a reason for living," "I feel loved," "I feel compassion for others in the difficulties they are facing." Three items had <61% agreement and Poor PABAK: "I feel a sense of harmony within myself," "My illness has strengthened my faith or spiritual beliefs," "I feel connected to a higher power (or God)." Dyadic congruence was compared by social-demographics using median one-way analysis. Male family members (median = 72%) were less likely to share spiritual beliefs with their adolescent than female family members (median = 83%), P = .0194. CONCLUSIONS: Family members may not share spiritual beliefs with adolescents and may be unaware of the importance of spiritual well-being for adolescents.

Influence of metabolic syndrome on cerebral perfusion and cognition.

Vascular cognitive impairment (VCI) is associated with chronic cerebral hypoperfusion (CCH) and memory deficits, and often occurs concurrently with metabolic syndrome (MetS). Despite their common occurrence, it is unknown whether CCH and MetS act synergistically to exacerbate VCI-associated pathology. Here, using male Sprague-Dawley rats, we examined the effects of a clinically relevant model of adolescent-onset MetS and adult-onset CCH on neuro-vascular outcomes, combining a cafeteria diet with a 2-vessel occlusion (2VO) model. Using longitudinal imaging, histology, and behavioural assessments, we identified several features of MetS and CCH including reduced cerebral blood volume, white matter atrophy, alterations in hippocampal cell density, and memory impairment. Furthermore, we identified a number of significant associations, potentially predictive of MetS and pathophysiological outcomes. White matter volume was positively correlated to HDL cholesterol; hippocampal cell density was negatively correlated to fasted blood glucose; cerebral blood flow and volume was negatively predicted by the combination of 2VO surgery and increased fasted blood glucose. These results emphasize the importance of including comorbid conditions when modeling VCI, and they outline a highly translational preclinical model that could be used to investigate potential interventions to mitigate VCI-associated pathology and cognitive decline.

Subacute metformin treatment reduces inflammation and improves functional outcome following neonatal hypoxia ischemia.

Hypoxia-ischemia (HI) injury is a leading cause of neonatal death and long-term disability, and existing treatment options for HI offer only modest benefit. Early intervention with the drug metformin has been shown to promote functional improvement in numerous rodent models of injury and has pleiotropic cellular effects in the brain. We have previously shown that 1 week of metformin treatment initiated 24 â€‹h after HI in neonatal mice resulted in improved motor and cognitive performance, activation of endogenous neural precursor cells (NPCs), and increased oligodendrogenesis. While promising, a limitation to this work is that immediate pharmacological intervention is not always possible in the clinic. Herein, we investigated whether delaying metformin treatment to begin in the subacute phase post-HI would still effectively promote recovery. Male and female C57/BL6 mice received HI injury postnatally, and metformin treatment began 7 days post-HI for up to 4 weeks. Motor and cognitive performance was assessed across time using behavioural tests (cylinder, foot fault, puzzle box). We found that metformin improved motor and cognitive behaviour, decreased inflammation, and increased oligodendrocytes in the motor cortex. Our present findings demonstrate that a clinically relevant subacute metformin treatment paradigm affords the potential to treat neonatal HI, and that improved outcomes occur through modulation of the inflammatory response and oligodendrogenesis.