Curricular Reform in Serious Illness Communication and Palliative Care: Using Medical Students' Voices to Guide Change.

PURPOSE: To gather and leverage the voices of students to drive creation of required, integrated palliative care curricula within undergraduate medical education in Massachusetts, which is lacking in a majority of U.S. medical schools. METHOD: The study was conducted by the Massachusetts Medical Schools' Collaborative, a working group committed to ensuring all medical students in Massachusetts receive foundational training in serious illness communication (SIC) and palliative care. Eight focus groups (2 per participating medical school) were conducted during January-May 2021 and included a total of 50 students from Boston University Chobanian & Avedisian School of Medicine, Harvard Medical School, Tufts University School of Medicine, and the UMass Chan Medical School. Data collected from focus groups were discussed and coded. Themes were identified using the immersion/crystallization qualitative data analysis approach. RESULTS: Six key themes emerged. Students viewed SIC as essential to high-quality medical practice regardless of specialty, and believed training in SIC skills and palliative care should be required in medical school curricula. Students preferred to learn and practice these skills using frameworks, particularly in real-world situations. Students recognized the expertise of palliative care specialists and described them as a scarce, often misunderstood resource in health care. Students reported it was mostly "luck" if they were included in family meetings and observed good role models. Finally, students desired practice in debriefing after difficult and emotional situations. CONCLUSIONS: This study confirms long-standing themes on students' experiences with SIC and palliative care topics, including feeling inadequately prepared to care for seriously ill patients as future physicians. Our study collected students' perspectives as actionable data to develop recommendations for curricular change. Collaborative faculty also created recommendations based on the focus group data for immediate and ongoing SIC and palliative care curricular change in Massachusetts, which can apply to medical schools nationwide.

A Call to Action: Using Curriculum Mapping at Four Medical Schools in Massachusetts to Advance Serious Illness Communication Training in Undergraduate Medical Education.

Background: Practicing physicians require serious illness communication (SIC) skills to ensure high-quality, humanistic care for patients and families as they face life-changing medical decisions. However, a majority of U.S. medical schools do not require formal training in SIC and fail to provide students deliberate practice before graduation. The Massachusetts Medical Schools' Collaborative was created to ensure that students receive foundational SIC training in undergraduate medical education. This Collaborative developed a curriculum-mapping tool to assess SIC at four medical schools. Objective: We aimed to understand existing educational activities across four medical schools and identify opportunities to build longitudinal, developmentally based curricular threads in SIC. Design: From July 2019 to April 2021, faculty, staff, and medical students assessed current educational activities related to five core competencies in SIC, adapted for students from national competencies for palliative medicine fellows, using a curriculum mapping tool. Measurements: The group selected 23 keywords and collected metrics to describe the timing, instruction and assessment for each school's educational activities. Results: On average, there were only 40 hours of required curricula in SIC over four years. Over 80% of relevant SIC hours occurred as elective experiences, mostly during the postclerkship phase, with limited capacity in these elective experiences. Only one school had SIC educational activities during the clerkship phase when students are developing clinical competencies. Assessment methods focused on student participation, and no school-assessed clinical performance in the clerkship or postclerkship phase. Conclusions: Medical schools are failing to consistently train and ensure basic competency in effective, compassionate SIC. Curriculum mapping allows schools to evaluate their current state on a particular topic such as SIC, ensure proper assessment, and evaluate curricular changes over time. Through the deliberate inclusion of SIC competencies in longitudinal curriculum design, we can fill this training gap and create best practices in undergraduate medical education.

Online Forums as a Tool for Broader Inclusion of Voices on Health Care Communication Experiences and Serious Illness Care: Mixed Methods Study.

BACKGROUND: Existing health care research, including serious illness research, often underrepresents individuals from historically marginalized communities. Capturing the nuanced perspectives of individuals around their health care communication experiences is difficult. New research strategies are needed that increase engagement of individuals from diverse backgrounds. OBJECTIVE: The aim of this study was to develop a mixed methods approach with qualitative online forums to better understand health communication experiences of individuals, including people from groups historically marginalized such as Black and Latino individuals; older adults; and people with low income, disability, or serious illness. METHODS: We used a multiphase mixed methods, community-informed research approach to design study instruments and engage participants. We engaged a diverse group of collaborators with lived experience of navigating the health care system who provided feedback on instruments, added concepts for testing, and offered guidance on creating a safe experience for participants (phase 1). We conducted a national quantitative survey between April and May 2021 across intrapersonal, interpersonal, and systems-level domains, with particular focus on interpersonal communication between patients and clinicians (phase 2). We conducted two asynchronous, qualitative online forums, a technique used in market research, between June and August 2021, which allowed us to contextualize the learnings and test concepts and messages (phase 3). Using online forums allowed us to probe more deeply into results and hypotheses from the survey to better understand the "whys" and "whats" that surfaced and to test public messages to encourage action around health. RESULTS: We engaged 46 community partners, including patients and clinicians from a Federally Qualified Health Center, to inform study instrument design. In the quantitative survey, 1854 adults responded, including 50.5% women, 25.2% individuals over 65 years old, and 51.9% individuals with low income. Nearly two-thirds identified as non-Hispanic white (65.7%), 10.4% identified as non-Hispanic Black, and 15.5% identified as Hispanic/Latino. An additional 580 individuals participated in online forums, including 60.7% women, 17.4% individuals over 65 years old, and 49.0% individuals with low income. Among the participants, 70.3% identified as non-Hispanic white, 16.0% as non-Hispanic Black, and 9.5% as Hispanic/Latino. We received rich, diverse input from our online forum participants, and they highlighted satisfaction and increased knowledge with engagement in the forums. CONCLUSIONS: We achieved modest overrepresentation of people who were over 65 years old, identified as non-Hispanic Black, and had low income in our online forums. The size of the online forums (N=580) reflected the voices of 93 Black and 55 Hispanic/Latino participants. Individuals who identify as Hispanic/Latino remained underrepresented, likely because the online forums were offered only in English. Overall, our findings demonstrate the feasibility of using the online forum qualitative approach in a mixed methods study to contextualize, clarify, and expound on quantitative findings when designing public health and clinical communications interventions.

Impairment and Disability Identity and Perceptions of Trust, Respect, and Fairness.

Importance: Most studies use impaired functioning alone to specify populations with disabilities. However, some people with functional impairments do not identify as disabled. With functional status-based definitions, studies have shown disparate care quality for people with disabilities. Objective: To examine whether impairment and disability identity have different associations with perceived health care experiences and explore factors associated with disability identification. Design, Setting, and Participants: This cross-sectional study used a nationally representative survey of US adults conducted from April 20 through May 31, 2021, and analyzed between June 1 and August 31, 2022. Survey participants were 1822 English- or Spanish-speaking adults responding either online or via telephone. Exposures: Using 8 survey questions, participants were grouped according to presence of impairment and disability identity. Main Outcomes and Measures: Likert scale measures of trust, respect, and fairness (henceforth, procedural justice measures) were dichotomized. Sociodemographic characteristics and rates of procedural justice responses were compared across groups. Multivariable logistic regressions adjusting for baseline characteristics were performed to (1) estimate associations of impairment and disability identity with perceptions of procedural justice and (2) explore factors associated with disability identification. Analyses applied survey weights. Results: Of 6126 individuals invited to participate, 1854 (30.3%) completed the survey. Thirty-two were excluded due to unreportable gender, for a final analytic sample of 1822 participants. Participants with impairments (n = 816; mean [SD] age, 48.1 [17.0] years; 51.2% women, 48.8% men) had worse perceptions on 7 of 10 procedural justice measures (crude) compared with those without impairments (n = 1006; mean [SD] age, 49.6 [18.1] years, 55.1% female, 44.9% male). Among respondents with impairments, those who did (n = 340) vs did not (n = 476) identify as disabled gave better ratings for clinician communication efforts (a lot of effort, 38.8% vs 31.0%) and having health goals understood (understood very or fairly well, 77.2% vs 70.1%) but gave worse ratings for respect (almost never felt inferior or talked down to, 66.1% vs 59.1%). Disability identification was associated with more reports of unfair treatment (31.0% vs 22.4%; adjusted odds ratio, 1.65; 95% CI, 1.12-2.42) and of being unafraid to ask questions or disagree (50.5% vs 40.1%; adjusted odds ratio, 1.51; 95% CI, 1.04-20.19). Income and employment were associated with disability identification. Conclusions and Relevance: In this cross-sectional survey study of US adults, health care perceptions differed between groups defined by impairment status and disability identity. These findings suggest that, alongside functional measures, health systems should capture disability identity to better address disparities for people with impairments.

Understanding primary palliative nursing education in undergraduate nursing programs.

BACKGROUND: Nurses are the largest segment of health care professionals and often the first one to interact with individuals about their health and illness. Ensuring nurses have the education to care for individuals with serious illness is essential to quality health care. The new AACN Essentials: Competencies for Professional Nursing Education delineates hospice/palliative/supportive care as one of four spheres of nursing care. Surveying undergraduate schools/colleges of nursing in Massachusetts about content pertaining to care of individuals with serious illness provides the foundation for a state strategy to ensure quality primary palliative education for undergraduate nursing students. METHODS: A Massachusetts statewide college/school of nursing survey approach to assessing primary palliative nursing education within undergraduate baccalaureate nursing curricula was performed from June 2020 to December 2020. Because the project was a collaboration with the Deans of the college/school of nursing, the survey identified the programs. RESULTS: Survey results revealed that only a small number of Massachusetts nursing programs are preparing nurses with specific and formal primary palliative nursing education. However, programs are open to support and resources. CONCLUSION: The survey provided information to inform a successful strategy to support primary palliative nursing education within Massachusetts undergraduate baccalaureate nursing curricula. A survey approach can serve as a model for other states.

Paving the way for universal medical student training in serious illness communication: the Massachusetts Medical Schools' Collaborative.

BACKGROUND: Patients with serious illness look to their clinicians for discussion and guidance on high-stakes treatment decisions, which are complex, emotional and value-laden. However, required training in serious illness communication is rare in U.S. medical schools, with efforts at curricular reform stymied by competing institutional demands, lack of resources and accreditation requirements. We describe an approach to building and scaling medical student training in serious illness communication through the creation of a statewide collaborative of medical schools. METHODS: The Massachusetts Medical Schools' Collaborative is a first-of-its-kind group that promotes longitudinal, developmentally-based curricula in serious illness communication for all students. Convened externally by the Massachusetts Coalition for Serious Illness Care, the collaborative includes faculty, staff, and students from four medical schools. RESULTS: The collaborative started with listening to member's perspectives and collectively developed core competencies in serious illness communication for implementation at each school. We share early lessons on the opportunities, challenges and sustainability of our statewide collective action to influence curricular reform, which can be replicated in other topic areas. CONCLUSIONS: Our next steps include curriculum mapping, student focus groups and faculty development to guide successful and enduring implementation of the competencies to impact undergraduate medical education in Massachusetts and beyond.

A Sequential Multiple Assignment Randomized Trial (SMART) study of medication and CBT sequencing in the treatment of pediatric anxiety disorders.

BACKGROUND: Treatment of a child who has an anxiety disorder usually begins with the question of which treatment to start first, medication or psychotherapy. Both have strong empirical support, but few studies have compared their effectiveness head-to-head, and none has investigated what to do if the treatment tried first isn't working well-whether to optimize the treatment already begun or to add the other treatment. METHODS: This is a single-blind Sequential Multiple Assignment Randomized Trial (SMART) of 24 weeks duration with two levels of randomization, one in each of two 12-week stages. In Stage 1, children will be randomized to fluoxetine or Coping Cat Cognitive Behavioral Therapy (CBT). In Stage 2, remitters will continue maintenance-level therapy with the single-modality treatment received in Stage 1. Non-remitters during the first 12 weeks of treatment will be randomized to either [1] optimization of their Stage 1 treatment, or [2] optimization of Stage 1 treatment and addition of the other intervention. After the 24-week trial, we will follow participants during open, naturalistic treatment to assess the durability of study treatment effects. Patients, 8-17 years of age who are diagnosed with an anxiety disorder, will be recruited and treated within 9 large clinical sites throughout greater Los Angeles. They will be predominantly underserved, ethnic minorities. The primary outcome measure will be the self-report score on the 41-item youth SCARED (Screen for Child Anxiety Related Disorders). An intent-to-treat analysis will compare youth randomized to fluoxetine first versus those randomized to CBT first ("Main Effect 1"). Then, among Stage 1 non-remitters, we will compare non-remitters randomized to optimization of their Stage 1 monotherapy versus non-remitters randomized to combination treatment ("Main Effect 2"). The interaction of these main effects will assess whether one of the 4 treatment sequences (CBT➔CBT; CBT➔med; med➔med; med➔CBT) in non-remitters is significantly better or worse than predicted from main effects alone. DISCUSSION: Findings from this SMART study will identify treatment sequences that optimize outcomes in ethnically diverse pediatric patients from underserved low- and middle-income households who have anxiety disorders. TRIAL REGISTRATION: This protocol, version 1.0, was registered in ClinicalTrials.gov on February 17, 2021 with Identifier: NCT04760275 .

Examining the Dose-Response Relationship in the Veterans Health Administration's MOVE!® Weight Management Program: A Nationwide Observational Study.

BACKGROUND: For more than a decade, the Veterans Health Administration (VHA) has offered MOVE!, a comprehensive lifestyle intervention for weight management. However, there is limited knowledge to inform resource allocation decisions at the health system level-for example, the choice between reaching new veterans with weight management treatment, re-engaging veterans who have stopped attending, and/or increasing contact with current MOVE! OBJECTIVE: To inform VHA policy and planning, this VHA-wide study examines the relationship between MOVE! participation and weight outcomes. DESIGN: A longitudinal observational study of veterans across VHA who participated in MOVE!. PARTICIPANTS: Veterans who initiated their most recent episode of MOVE! care between 2004 and 2014. MAIN MEASURES: Weight measurements were abstracted from VHA electronic health records. The primary outcome was the proportion of veterans with clinically relevant weight loss. The predictor of interest was number of MOVE! contacts during the 12 months following MOVE! initiation. KEY RESULTS: The cohort consisted of 237,577 veterans (87.4% male; mean age 54.4 years), who had 5.3 contacts on average in the 12 months following initiation. Veterans with 2-5 contacts had the same odds of achieving clinically relevant weight loss as veterans with only one contact (adjusted OR: 1.00, 95% CI: 0.98-1.03). Veterans with 6-9, 10-13, 14-17, and 18 or more contacts had significantly higher odds of clinically relevant weight loss (adjusted OR: 1.17, 95% CI: 1.13-1.20; adjusted OR: 1.53, 95% CI: 1.47-1.59; adjusted OR: 1.84, 95% CI: 1.74-1.94; adjusted OR: 2.21, 95% CI: 2.12-2.31, respectively). CONCLUSIONS: Veterans with ≥6 MOVE! contacts in the year following treatment initiation were significantly more likely to achieve clinically relevant weight loss than those with one contact, with greater participation further increasing the odds of clinically relevant weight loss. While further characterization of weight loss predictors is needed, the VHA should provide policy guidance that supports increasing participation among veterans who have initiated MOVE!.

State of the art conference on weight management in VA: Policy and research recommendations for advancing behavioral interventions.

This article summarizes outcomes of the behavioral interventions work group for the Veterans Health Administration (VHA) State of the Art Conference (SOTA) for Weight Management. Sixteen VHA and non-VHA subject matter experts, representing clinical care delivery, research, and policy arenas, participated. The work group reviewed current evidence of efficacy, effectiveness, and implementation of behavioral interventions for weight management, participated in phone- and online-based consensus processes, generated key questions to address gaps, and attended an in-person conference in March 2016. The work group agreed that there is strong evidence for efficacy and effectiveness of core behavioral intervention components and processes, but insufficient evidence to determine the comparative effectiveness of multiple clinician-delivered weight management modalities, as well as technologies that may or may not supplement clinician-delivered treatments. Effective strategies for implementation of weight management services in VHA were identified. The SOTA work group's foremost policy recommendations are to establish a system-wide culture for weight management and to identify a population-level health metric to measure the impact of weight management interventions that can be tracked and clearly communicated throughout VHA. The work group's top research recommendation is to determine how to deploy and scale the most effective behavioral weight management interventions for Veterans.

Implementation of Lung Cancer Screening in the Veterans Health Administration.

Importance: The US Preventive Services Task Force recommends annual lung cancer screening (LCS) with low-dose computed tomography for current and former heavy smokers aged 55 to 80 years. There is little published experience regarding implementing this recommendation in clinical practice. Objectives: To describe organizational- and patient-level experiences with implementing an LCS program in selected Veterans Health Administration (VHA) hospitals and to estimate the number of VHA patients who may be candidates for LCS. Design, Setting, and Participants: This clinical demonstration project was conducted at 8 academic VHA hospitals among 93 033 primary care patients who were assessed on screening criteria; 2106 patients underwent LCS between July 1, 2013, and June 30, 2015. Interventions: Implementation Guide and support, full-time LCS coordinators, electronic tools, tracking database, patient education materials, and radiologic and nodule follow-up guidelines. Main Outcomes and Measures: Description of implementation processes; percentages of patients who agreed to undergo LCS, had positive findings on results of low-dose computed tomographic scans (nodules to be tracked or suspicious findings), were found to have lung cancer, or had incidental findings; and estimated number of VHA patients who met the criteria for LCS. Results: Of the 4246 patients who met the criteria for LCS, 2452 (57.7%) agreed to undergo screening and 2106 (2028 men and 78 women; mean [SD] age, 64.9 [5.1] years) underwent LCS. Wide variation in processes and patient experiences occurred among the 8 sites. Of the 2106 patients screened, 1257 (59.7%) had nodules; 1184 of these patients (56.2%) required tracking, 42 (2.0%) required further evaluation but the findings were not cancer, and 31 (1.5%) had lung cancer. A variety of incidental findings, such as emphysema, other pulmonary abnormalities, and coronary artery calcification, were noted on the scans of 857 patients (40.7%). Conclusions and Relevance: It is estimated that nearly 900 000 of a population of 6.7 million VHA patients met the criteria for LCS. Implementation of LCS in the VHA will likely lead to large numbers of patients eligible for LCS and will require substantial clinical effort for both patients and staff.

Nutrition and neurodevelopmental outcomes in preterm infants: a systematic review.

UNLABELLED: A systematic review with meta-analysis was carried out to investigate the effects of increased nutritional intake, via either macronutrient or multinutrient intervention, during the neonatal period on neurodevelopmental outcomes in infants born at <32 weeks of gestation or weighing <1501 g at birth. CONCLUSION: Although the relationship remains unclear, increased early nutrition may reduce neurodevelopmental impairment in this group of infants. Future research should focus on using standardised nutritional interventions and an agreed neurodevelopmental assessment battery.

Long-Term Air Pollution Exposure and Blood Pressure in the Sister Study.

BACKGROUND: Exposure to air pollution has been consistently associated with cardiovascular morbidity and mortality, but mechanisms remain uncertain. Associations with blood pressure (BP) may help to explain the cardiovascular effects of air pollution. OBJECTIVE: We examined the cross-sectional relationship between long-term (annual average) residential air pollution exposure and BP in the National Institute of Environmental Health Sciences' Sister Study, a large U.S. cohort study investigating risk factors for breast cancer and other outcomes. METHODS: This analysis included 43,629 women 35-76 years of age, enrolled 2003-2009, who had a sister with breast cancer. Geographic information systems contributed to satellite-based nitrogen dioxide (NO2) and fine particulate matter (≤ 2.5 µm; PM2.5) predictions at participant residences at study entry. Generalized additive models were used to examine the relationship between pollutants and measured BP at study entry, adjusting for cardiovascular disease risk factors and including thin plate splines for potential spatial confounding. RESULTS: A 10-µg/m(3) increase in PM2.5 was associated with 1.4-mmHg higher systolic BP (95% CI: 0.6, 2.3; p < 0.001), 1.0-mmHg higher pulse pressure (95% CI: 0.4, 1.7; p = 0.001), 0.8-mmHg higher mean arterial pressure (95% CI: 0.2, 1.4; p = 0.01), and no significant association with diastolic BP. A 10-ppb increase in NO2 was associated with a 0.4-mmHg (95% CI: 0.2, 0.6; p < 0.001) higher pulse pressure. CONCLUSIONS: Long-term PM2.5 and NO2 exposures were associated with higher blood pressure. On a population scale, such air pollution-related increases in blood pressure could, in part, account for the increases in cardiovascular disease morbidity and mortality seen in prior studies.

Responding to traveling patients' seasonal demand for health care services.

The Veterans Health Administration (VHA) provides care to over 8 million Veterans and operates over 1,700 sites of care across 21 regional networks in the United States. Health care providers within VHA report large seasonal variation in the demand for services, especially in the southern United States because of arrival of "snowbirds" during the winter. Because resource allocation activities are primarily carried out through an annual budgeting process, the seasonal load imposed by "traveling Veterans"-Veterans that seek care at VHA sites outside of their home network-make providing high-quality services more challenging. This work constitutes the first major effort within VHA to understand the impact of traveling Veterans. We discovered strong seasonal fluctuations in demand at a clinic located in the southeastern United States and developed a seasonal autoregressive integrated moving average model to help the clinic forecast demand for its services with significantly less error than historical averaging. Monte Carlo simulation of the clinic revealed that physicians are overutilized, suggesting the need to re-evaluate how the clinic is currently staffed. More broadly, this study demonstrates how operations management methods can assist operational decision making at other clinics and medical centers both within and outside VHA.

Experience of the Veterans Health Administration in Massachusetts after state health care reform.

Starting in 2006, Massachusetts enacted a series of health insurance reforms that successfully led to 96.6% of its population being covered by 2011. As the rest of the nation undertakes similar reforms, it is unknown how the Veterans Health Administration (VHA), one of many important Federal health care programs, will be affected. Our state-level study approach assessed the effects of health reform on utilization of VHA services in Massachusetts from 2005 to 2011. Models were adjusted for state-level demographic and economic characteristics, including health insurance rates, unemployment rates, median household income, poverty rates, and percent of population 65 years and older. No statistically significant associative change was observed in Massachusetts relative to other states over this time period. The findings raise important questions about the continuing role of VHA in American health care as health insurance coverage is one of many factors that influence decisions on where to seek health care.

Identification of a novel mutation in the NTF4 gene that causes primary open-angle glaucoma in a Chinese population.

PURPOSE: Neurotrophin-4 protein (NT-4) plays a role in the protection of retinal ganglion cells by activating tyrosine kinase B (TrkB) receptors. A recent study identified mutations within the neurotrophin-4 (NTF4) gene to account for 1.7% of primary open-angle glaucoma (POAG) in Europeans. The aim of this study was to investigate the frequency of NTF4 mutations in Chinese POAG patients. METHODS: One hundred-seventy-four Chinese subjects with POAG and 91 normal Chinese subjects were recruited. POAG was defined by the presence of glaucomatous optic neuropathy, open angles on gonioscopy, and absence of secondary causes of glaucoma. The single coding exon of NTF4 was PCR amplified and subjected to bidirectional sequencing in all subjects. RESULTS: The mean age of POAG patients was 66.0+/-13.0 years (range 25-96 years) and that of controls was 67.1+/-4.6 years (range 60-85 years). We identified a novel NTF4 missense mutation substituting leucine by serine at codon 113 (Leu113Ser) caused by a c.338T>C mutation in a single patient with unilateral POAG, who presented with a baseline intraocular pressure of 25 mmHg, a vertical cup-to-disc ratio of 0.9 and an inferior hemifield defect in the affected eye. Structural analysis indicated that the Leu113Ser mutation is likely to alter the NT-4 protein structure near the TrkB binding site and disrupts the formation of the NT-4-TrkB complex required for the activation of TrkB. CONCLUSIONS: Identification of a single mutation in our study suggests that NTF4 mutations are a rare cause of POAG (0.6%, 95%CI 0.02%-3.16%) in Chinese people.

Permanent impairment of birth and survival of cortical and hippocampal proliferating cells following excessive drinking during alcohol dependence.

Experimenter-delivered alcohol decreases adult hippocampal neurogenesis and hippocampal-dependent learning and memory. The present study used clinically relevant rodent models of nondependent limited access alcohol self-administration and excessive drinking during alcohol dependence (alcohol self-administration followed by intermittent exposure to alcohol vapors over several weeks) to compare alcohol-induced effects on cortical gliogenesis and hippocampal neurogenesis. Alcohol dependence, but not nondependent drinking, reduced proliferation and survival in the medial prefrontal cortex (mPFC). Apoptosis was reduced in both alcohol groups within the mPFC, which may reflect an initiation of a reparative environment following alcohol exposure as decreased proliferation was abolished after prolonged dependence. Reduced proliferation, differentiation, and neurogenesis were observed in the hippocampus of both alcohol groups, and prolonged dependence worsened the effects. Increased hippocampal apoptosis and neuronal degeneration following alcohol exposure suggest a loss in neuronal turnover and indicate that the hippocampal neurogenic niche is highly vulnerable to alcohol.