RESUMO
BACKGROUND: During the COVID-19 pandemic, clinical services were severely disrupted, restricted, or withdrawn across the country. People living with Inflammatory Bowel Disease (IBD) - an auto-immune disorder for which medical treatment often results in immunosuppression, thus requiring regular monitoring-may have struggled to access clinical support. As part of a larger qualitative study, we investigated experiences of access to clinical services during the pandemic, and patient concerns about and preferences for services in the future. METHODS: This exploratory qualitative study used semi-structured interviews to explore participants' experiences of clinical services across the UK during the pandemic. All data were collected remotely (March - May 2021) using online video-calling platforms or by telephone. Audio files were transcribed professionally and anonymised for analysis. Data were analysed using thematic analysis. RESULTS: Of the eight themes found across all data, four related specifically to accessing GP, local (district) hospital, and specialist (tertiary) referral services for IBD: 1) The Risk of Attending Hospital; 2) Missing Routine Monitoring or Treatment; 3) Accessing Care as Needed, and 4) Remote Access and The Future. CONCLUSIONS: Our findings support other studies reporting changes in use of health services, and concerns about future remote access methods. Maintenance of IBD services in some form is essential throughout crisis periods; newly diagnosed patients need additional support; future dependence on IBD services could be reduced through use of treatment / self-management plans. As the NHS digitalises it's future services, the mode of appointment-remote (telephone, video call), or in-person - needs to be flexible and suit the patient.
Assuntos
COVID-19 , Doenças Inflamatórias Intestinais , Humanos , COVID-19/epidemiologia , Pandemias , Hospitais , Doenças Inflamatórias Intestinais/terapia , Pesquisa QualitativaRESUMO
The current research examines potentially morally injurious events (PMIEs) faced by healthcare professionals working in forensic and psychiatric environments. A systematic literature review was conducted to identify peer-reviewed articles reporting on sources of moral injury or similar concepts (e.g., moral distress) for healthcare workers in such settings. Thirty articles were included and analyzed using a meta-ethnographic approach. Synthesis yielded three third-order factors, each reflecting a moral dichotomy: (a) "between profession and system," (b) "between relations with patients and relations with others," and (c) "between principles and practices." Findings illustrated the hierarchical relationships between dichotomies, with discordance between values of the healthcare profession and features of the healthcare system providing the conditions for PMIEs to occur. The review advances conceptual understandings of PMIEs in forensic and psychiatric settings, illustrating the multilayered dimensions within which morally injurious events are experienced. Theoretical and practical implications are offered that may support the early detection and prevention of moral injury in healthcare professionals.
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Transtornos de Estresse Pós-Traumáticos , Humanos , Transtornos de Estresse Pós-Traumáticos/psicologia , Pessoal de SaúdeRESUMO
OBJECTIVES: Auricular acupuncture (AA) is becoming increasingly common in primary care clinics, emergency departments and peri-operatively for pain relief. Over the last decade, since the last comprehensive reviews were published, the literature has expanded. In this scoping review, we seek to document the efficacy of AA in treating both acute and chronic pain, describe the mechanism of action of AA in treating pain, and discuss how AA has been integrated into Western medicine to date. METHODS: The authors performed a MEDLINE search inclusive of articles from 1966 to June 2023 including articles written in English identifying literature. We included human studies when more than 3 patients were included. Three hundred and fourteen unique articles were identified and 152 were selected by title screen. After abstract review, 117 were chosen for full-text review. Following full-text review, 33 articles were excluded and 21 added from references, totaling 105 articles included in our scoping review. RESULTS: AA reduces pain severity in patients with both acute and chronic pain. The best studies in the acute settings have occurred in the peri-operative setting where sham AA is employed, multiple sessions of AA are given, and medication dosing is carefully monitored. In these cases, AA reduced pain and post-operative medications. In patients with chronic pain, multiple sessions of AA resulted not only in pain relief but also in improvements in function and disability. Literature suggests that AA works through multiple mechanisms with the most compelling data coupled to the autonomic nervous system and neuroendocrine system. Curriculums designed to teach AA and aid in implementation have been published. CONCLUSION: AA is an accessible, effective means of pain relief. AA is relatively straightforward to learn, and protocols and curriculums exist to teach healthcare professionals this valuable skill. Overcoming implementation barriers, including patient education, are essential next steps.
This review was written to analyze the current research on an increasingly popular pain relief treatment, auricular acupuncture. Auricular acupuncture has been an effective method of pain relief for patients with short-term pain. People who experienced pain after surgery and received auricular acupuncture experienced a decrease in pain and pain medications. Patients with chronic pain who underwent auricular acupuncture experienced pain relief and an increase in their functional abilities. Auricular acupuncture is thought to affect the body's autonomic nervous system and neuroendocrine system as it creates its source of pain relief for the body. Auricular acupuncture is increasingly popular in the education of healthcare workers and clinical practice. Research shows auricular acupuncture is an effective, easy, and less expensive method of pain relief, whose growth in pain management use may benefit from further education, especially for patients.
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Acupuntura Auricular , Dor Crônica , Manejo da Dor , Humanos , Acupuntura Auricular/métodos , Manejo da Dor/métodos , Dor Crônica/terapia , Dor Aguda/terapiaRESUMO
PURPOSE OF REVIEW: In light of the recent recognition that even mild forms of traumatic brain injury (TBI) can lead to long-term cognitive and behavioral deficits, this review examines recent data on the neuroprotective and neurotoxic roles of zinc after brain injury. RECENT FINDINGS: Data show that treatment using dietary and parenteral zinc supplementation can reduce TBI-associated depression and improve cognitive function, specifically spatial learning and memory. However, excessive release of free zinc, particularly in the hippocampus associated with acute injury, can lead to increases in protein ubiquitination and neuronal death. SUMMARY: This work shows the need for future research to clarify the potentially contradictory roles of zinc in the hippocampus and define the clinical use of zinc as a treatment following brain injury in humans. This is particularly important given the finding that zinc may reduce TBI-associated depression, a common and difficult outcome to treat in all forms of TBI.
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Lesões Encefálicas/tratamento farmacológico , Suplementos Nutricionais , Fármacos Neuroprotetores/administração & dosagem , Fármacos Neuroprotetores/efeitos adversos , Síndromes Neurotóxicas/tratamento farmacológico , Zinco/administração & dosagem , Zinco/efeitos adversos , Animais , Lesões Encefálicas/etiologia , Morte Celular/efeitos dos fármacos , Cognição/efeitos dos fármacos , Modelos Animais de Doenças , Hipocampo/efeitos dos fármacos , Hipocampo/metabolismo , Humanos , Neurônios/citologia , Neurônios/efeitos dos fármacos , Síndromes Neurotóxicas/etiologiaRESUMO
In addition to being a covalent linker in molecular conjugation chemistry, the function of a 1,2,3-triazolyl moiety resulting from the copper(I)-catalyzed azide-alkyne cycloaddition reaction as a ligand for metal ions is receiving considerable attention. In this work, we characterize the thermodynamic and kinetic effects of incorporating a 1,2,3-triazolyl group in a multidentate ligand scaffold on metal coordination in the context of fluorescent zinc(II) indicator development. Ligands L14, BrL14, and FL14 (1,4-isomers) contain the 1,4-disubstituted-1,2,3-triazolyl group that is capable of binding with zinc(II) in conjunction with a di(2-picolylamino) (DPA) moiety within a multidentate ligand scaffold. Therefore, the 1,2,3-triazolyl in the 1,4-isomers is "integrated" in chelation. The 1,5-isomers L15, BrL15, and FL15 contain 1,2,3-triazolyls that are excluded from participating in zinc(II) coordination. These 1,2,3-triazolyls are "passive linkers". Zinc(II) complexes of 2:1 (ligand/metal) stoichiometry are identified in solution using (1)H NMR spectroscopy and isothermal titration calorimetry (ITC) and, in one case, characterized in the solid state. The 1:1 ligand/zinc(II) affinity ratio of L14 over L15, which is attributed to the affinity enhancement of a 1,2,3-triazolyl group to zinc(II) over that of the solvent acetonitrile, is quantified at 18 (-1.7 kcal/mol at 298 K) using an ITC experiment. Fluorescent ligands FL14 and FL15 are evaluated for their potential in zinc(II) sensing applications under pH neutral aqueous conditions. The 1,4-isomer FL14 binds zinc(II) both stronger and faster than the 1,5-isomer FL15. Visualization of free zinc(II) ion distribution in live HeLa cells is achieved using both FL14 and FL15. The superiority of FL14 in staining endogenous zinc(II) ions in live rat hippocampal slices is evident. In summation, this work is a fundamental study of 1,2,3-triazole coordination chemistry, with a demonstration of its utility in developing fluorescent indicators.
Assuntos
Corantes Fluorescentes/química , Termodinâmica , Triazóis/química , Zinco/análise , Animais , Células HeLa , Hipocampo/química , Humanos , Íons/análise , Cinética , Conformação Molecular , RatosRESUMO
Whether complex posttraumatic stress disorder (CPTSD) and borderline personality disorder (BPD) diagnoses differ substantially enough to warrant separate diagnostic classifications has been a subject of controversy for years. To contribute to the nomological network of cumulative evidence, the main goal of the present study was to explore, using network analysis, how the symptoms of ICD-11 PTSD and disturbances in self-organization (DSO) are interconnected with BPD in a clinical sample of polytraumatized individuals (N = 330). Participants completed measures of life events, CPTSD, and BPD. Overall, our study suggests that BPD and CPTSD are largely separated. The bridges between BPD and CPTSD symptom clusters were scarce, with "Affective Dysregulation" items being the only items related to BPD. The present study contributes to the growing literature on discriminant validity of CPTSD and supports its distinctiveness from BPD. Implications for treatment are discussed.
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Transtorno da Personalidade Borderline , Transtornos de Estresse Pós-Traumáticos , Humanos , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Transtornos de Estresse Pós-Traumáticos/psicologia , Transtorno da Personalidade Borderline/diagnóstico , Classificação Internacional de Doenças , Personalidade , SíndromeRESUMO
BACKGROUND: Provider communication courses and guidelines stress the use of open-ended questions, such as "what is your understanding of your illness?," to explore patients' perceptions of their illness severity, yet descriptions of patients' responses are largely absent from the current literature. These questions are most often used by clinicians as they deliver bad news to cancer patients or address code status at the end of life, but have not been well studied in other diseases or earlier in the disease course. OBJECTIVES: To explore the responses of patients living with serious illness to the question "what is your understanding of your illness?" and to identify similarities and differences in themes and language used by cancer and non-cancer patients to discuss their illness. DESIGN: We conducted a qualitative analysis of patients' responses to "what is your understanding of your illness?" PARTICIPANTS: Two hundred nine subjects, 69 with cancer, 70 CHF, and 70 COPD, who had an estimated 50 % 2-year survival. Mean age was 66 years. APPROACH: Responses were recorded at the baseline interview of a larger, longitudinal study of patients with advanced life-limiting illness (cancer, CHF, or COPD). After thematic content analysis using open coding, investigators conducted pattern analysis to examine variation associated with diagnosis. RESULTS: We identified five major themes: naming the diagnosis or describing the pathophysiology, illness history, prognosis, symptoms, and causality. Responses varied by diagnosis. Cancer patients' responses more often included specific diagnostic details and prognosis, while non-cancer patients referenced symptoms and causality. CONCLUSIONS: Patients' responses to the open-ended question "what is your understanding of your illness?" can provide the clinician with important information and insight on how they view their illness in a non-acute setting. The identified themes can serve as a foundation for patient-centered communication strategies as we strive to build a mutual understanding of illness with patients.
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Neoplasias/psicologia , Satisfação do Paciente , Doente Terminal/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Comunicação , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Relações Profissional-Paciente , Inquéritos e QuestionáriosRESUMO
OBJECTIVE: To examine health professions trainees' end-of-life (EOL) care knowledge, attitudes, and intentions. METHODS: IRB-approved online survey of 346 students/5 universities in final training years-public health, pharmacy, physician, physician assistant, occupational therapy, and physical therapy (April-May 2016). Queried knowledge, attitudes, and intentions toward EOL care. RESULTS: Sufficient knowledge of palliative care was reported by 25% while sufficient knowledge of advance care planning (ACP) was 17%. Ninety-six percent thought it important to discuss EOL issues in training; 92% believed their professions played important roles in EOL care. Managing pain was chosen as the best example of palliative care by 93.6% and designating healthcare proxies was reported as the best example of ACP (5.8%). Pharmacy, public health, and rehabilitation therapy students were less likely than physician and physician assistant trainees to report intent to work in EOL care. Among those who want to work in EOL care, 65% reported having clinical experience with seriously ill or dying patients/clients. We discuss other findings related to perceptions of didactic preparation in palliative care, palliative care knowledge access/function, death/dying attitudes, and intentions toward seriously illness care. DISCUSSION: There is interest in and knowledge of palliative care, including EOL care, among multiple health professions. Provides guidance for how we train health professionals to improve population health by optimizing EOL care.
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Estudantes de Ciências da Saúde , Assistência Terminal , Atitude do Pessoal de Saúde , Morte , Ocupações em Saúde , Humanos , Cuidados Paliativos , Recursos HumanosRESUMO
BACKGROUND: Obesity is a growing global health concern, and those with a developmental disorder are at particular risk. Elevated levels of childhood trauma, placement breakdowns and obesity have been documented in the developmental disorder population, yet their relative associations remain unclear. OBJECTIVE: A previous study (Morris et al., 2020) highlighted a high prevalence of adverse childhood experiences (ACEs) and obesity in adolescents with developmental disorders residing in a secure inpatient setting. The current cross-sectional study sought to further explore the prevalence of placement breakdowns and its relationship with Body Mass Index (BMI) in this sample. METHODS: Secondary analysis was conducted on existing data for 34 adolescents, aged 10-17 years at admission, held in a secure mental health hospital developmental disorder service in the United Kingdom (UK) under the Mental Health Act. RESULTS: Almost half of participants had experienced a placement breakdown (47.1%), the majority of whom typically experienced multiple breakdowns (M = 3.94, SD = 2.14). Placement breakdowns significantly predicted BMI and had a predictive effect that was independent to and above that of ACEs. CONCLUSIONS: Placement breakdowns significantly contribute to risk for obesity, above that explained by early adversity. Those who have experienced placement breakdowns have a greater risk for obesity, irrespective of their level of exposure to ACEs. A history of previous placement breakdowns may act as a red flag for obesity.
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Experiências Adversas da Infância , Pessoas com Deficiência , Adolescente , Criança , Estudos Transversais , Deficiências do Desenvolvimento , Humanos , Obesidade/complicações , Obesidade/epidemiologiaRESUMO
This study explores whether a novel parent-supported emotional literacy programme called Parents And Children Together (PACT) is associated with improved social and emotional development for children compared to a standard curriculum. In eight schools in Cornwall, 686 children from Years 3 to 6 and their families participated in the PACT programme, and were compared with 212 peers from four demographically-matched schools who received a standard curriculum. Parents in intervention schools believed that the PACT programme had a significant positive impact on the social and emotional development of their children and improved the partnership with their child's school. Parental ratings of their child's emotional literacy was significantly higher after participation in the programme, and the children rated themselves significantly less likely to need further help in the future than those in the control schools. The implications for comprehensive mental health services are considered, and recommendations made for developing school and home-based emotional literacy programmes. Schools, particularly in deprived areas, should be supported to take part in PACT. School nurses and other community practitioners should play a leading role in these primary prevention and mental health improvement initiatives.
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Atitude Frente a Saúde , Educação em Saúde/organização & administração , Letramento em Saúde/organização & administração , Relações Pais-Filho , Pais , Serviços de Enfermagem Escolar/organização & administração , Criança , Pré-Escolar , Currículo , Emoções , Inglaterra , Humanos , Pesquisa Metodológica em Enfermagem , Poder Familiar/psicologia , Pais/educação , Pais/psicologia , Projetos Piloto , Avaliação de Programas e Projetos de Saúde , Psicologia da Criança , Pesquisa Qualitativa , Apoio Social , Inquéritos e QuestionáriosRESUMO
In 2006, eight community tuberculosis (TB) cases and a ninth incarceration-related case were identified during an outbreak investigation, which included genotyping of all Mycobacterium tuberculosis isolates. In 1996, the source patient had pulmonary TB but completed only two weeks of treatment. From February 2005 to May 2006, the source patient lived in four different locations while contagious. The outbreak cases had matching isolate spoligotypes; however, the mycobacterial interspersed repetitive unit (MIRU) patterns from isolates from two secondary cases differed by one tandem repeat at a single MIRU locus. The source patient's isolates showed a mixed mycobacterial population with both MIRU patterns. Traditional and molecular epidemiologic methods linked eight secondary TB cases to a single source patient whose incomplete initial treatment, incarceration, delayed diagnosis, and housing instability resulted in extensive transmission. Adequate treatment of the source patient's initial TB or early diagnosis of recurrent TB could have prevented this outbreak.
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Surtos de Doenças/prevenção & controle , Genótipo , Mycobacterium tuberculosis/genética , Tuberculose/epidemiologia , Adulto , Análise por Conglomerados , Connecticut/epidemiologia , Feminino , Humanos , Lactente , Masculino , Auditoria Médica , Mycobacterium , Tuberculose/diagnóstico , Tuberculose/genética , Tuberculose/prevenção & controle , Tuberculose/transmissão , Adulto JovemRESUMO
BACKGROUND: Controlled cortical impact (CCI) has emerged as one of the most flexible and clinically applicable approaches for the induction of traumatic brain injury (TBI) in rodents and other species. Although this approach has been shown to model cognitive and functional outcomes associated with TBI in humans, recent work has shown that CCI is limited by excessive variability in lesion size despite attempts to control velocity, impact depth, and dwell time. NEW METHOD: Thus, this work used high-speed imaging to evaluate the delivery of cortical impact and permit the identification of specific parameters associated with technical variability in the CCI model. RESULTS: Variability is introduced by vertical oscillations that result in multiple impacts of varying depths, lateral movements after impact, and changes in velocity, particularly at the prescribed impact depth. CONCLUSIONS: Together these data can inform future work to design modifications to commonly used CCI devices that produce TBI with less variability in severity and lesion size.
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Lesões Encefálicas Traumáticas/patologia , Encéfalo/patologia , Modelos Animais de Doenças , Processamento de Imagem Assistida por Computador/métodos , Animais , Encéfalo/diagnóstico por imagem , Lesões Encefálicas Traumáticas/diagnóstico por imagem , Imagem de Difusão por Ressonância Magnética , Masculino , Ratos Sprague-Dawley , Reprodutibilidade dos TestesRESUMO
BACKGROUND: While many patients hope to die at home, many die in hospitals. Patients die with unrecognized and untreated symptoms including dyspnea. OBJECTIVE: We sought to determine prevalence of dyspnea at end of life in patients dying in acute hospital care and examine treatment patterns. DESIGN/PARTICIPANTS: A retrospective chart review of deaths at tertiary care hospital over a 3-month period evaluated dyspnea in last 24 hours of life, opioid orders and administration as well as presence of palliative care consultation. RESULTS: Of 106 decedents, 88 experienced dyspnea or tachypnea in last 24 hours of life. Health care providers noted only 50% as dyspneic, even those undergoing terminal comfort extubation. Almost all patients with dyspnea documented by staff had orders and received opioids; however, few orders described treatment specifically for dyspnea. Patients with palliative care consultations more often received opioids ( P = .0007), and opioid orders more often specified treatment of dyspnea ( P = .013). CONCLUSION: These findings support that previous work noting many patients experience dyspnea at end of life. Despite national guidelines, health care providers may still be underrecognizing and likely not optimally treating dyspnea at the end of life in the hospital. Collaboration with palliative medicine providers may improve assessments and treatments for quality end-of-life care for hospitalized patients.
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Dispneia/mortalidade , Hospitalização/estatística & dados numéricos , Analgésicos Opioides/uso terapêutico , Dispneia/epidemiologia , Dispneia/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cuidados Paliativos/estatística & dados numéricos , Prevalência , Estudos Retrospectivos , Assistência Terminal/estatística & dados numéricosRESUMO
OBJECTIVES: To describe the CARES program, a model of palliative care for nursing home residents. DESIGN: Descriptive analysis of the Caring About Residents' Experiences and Symptoms (CARES) Program that provides palliative care services to nursing home residents. PROGRAM EVALUATION: The CARES Program serves as an example of collaborative efforts to meet community needs. To evaluate the program, we document the services provided as well as process outcomes (changes to care plans, hospitalizations, location of death, and hospice utilization) for residents referred. RESULTS: 170 nursing home residents were seen by CARES Program between February 2013 to December 2015, 48% for skilled services, and 52% for long term care. Majority of referrals were for goals of care and concurrent symptom management. Following consultation, 67% of residents had a change in code status. Of residents desiring a palliative course 90% were never hospitalized. Overall, 53% of residents died; and those in long term care dying more often with hospice. CONCLUSION: The CARES program of palliative consultation addresses the needs of nursing home residents. The model has potential to be reproducible in in other communities.
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Instituição de Longa Permanência para Idosos/organização & administração , Casas de Saúde/organização & administração , Cuidados Paliativos/organização & administração , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Cuidados Paliativos na Terminalidade da Vida/estatística & dados numéricos , Hospitalização/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação de Processos e Resultados em Cuidados de Saúde , Planejamento de Assistência ao Paciente/organização & administraçãoRESUMO
Zinc-induced neurotoxicity has been shown to play a role in neuronal damage and death associated with traumatic brain injury, stroke, seizures, and neurodegenerative diseases. During normal firing of "zinc-ergic" neurons, vesicular free zinc is released into the synaptic cleft where it modulates a number of postsynaptic neuronal receptors. However, excess zinc, released after injury or disease, leads to excitotoxic neuronal death. The mechanisms of zinc-mediated neurotoxicity appear to include not only neuronal signaling but also regulation of mitochondrial function and energy production, as well as other mechanisms such as aggregation of amyloid beta peptides in Alzheimer's disease. However, recent data have raised questions about some of our long-standing assumptions about the mechanisms of zinc in neurotoxicity. Thus, this review explores the most recent published findings and highlights the current mechanistic controversies.
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Intoxicação do Sistema Nervoso por Metais Pesados/etiologia , Neurônios/metabolismo , Zinco/intoxicação , Doença de Alzheimer/metabolismo , Peptídeos beta-Amiloides/metabolismo , Morte Celular , Intoxicação do Sistema Nervoso por Metais Pesados/metabolismo , Intoxicação do Sistema Nervoso por Metais Pesados/fisiopatologia , Humanos , Mitocôndrias/metabolismo , Agregação Patológica de Proteínas/metabolismo , Transdução de Sinais , Sinapses/metabolismoRESUMO
BACKGROUND: Because of possible adverse outcomes, many of the >6 million annual emergency department (ED) patients with suspected acute coronary syndromes (ACS) undergo extensive evaluations. To minimize medical errors, chest pain evaluations are structured to identify accurately nearly 100% of patients with ACS. This is at a cost of negative evaluation rates that can exceed 90%. Ischemia-modified albumin (IMA), a serum biomarker with a high negative predictive value (NPV) at ED presentation, may exclude ACS. Our objective was to perform a meta-analysis of IMA use for ACS risk stratification. METHODS: By computer literature search and communication with authors of unpublished information, all IMA data were considered. This analysis included studies if they reported IMA results from an ED presentation for suspected ACS. We defined a negative triple prediction test (TPT) as a nondiagnostic electrocardiogram, negative troponin, and negative IMA. RESULTS: Eight studies of >1800 patients met the entry criteria. The TPT sensitivity and NPV for acute ACS were 94.4% and 97.1% and, for longer-term outcomes, were 89.2% and 94.5%, respectively. CONCLUSIONS: A negative TPT of a nondiagnostic electrocardiogram, negative troponin, and negative IMA has a high NPV for excluding ACS in the ED.
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Angina Instável/diagnóstico , Serviço Hospitalar de Emergência , Infarto do Miocárdio/diagnóstico , Albumina Sérica/análise , Biomarcadores/sangue , Creatina Quinase Forma MB/análise , Eletrocardiografia , Humanos , Valor Preditivo dos Testes , Medição de Risco , Sensibilidade e Especificidade , SíndromeRESUMO
There is great deal of debate about the possible role of adult-born hippocampal cells in the prevention of depression and related mood disorders. We first showed that zinc supplementation prevents the development of the depression-like behavior anhedonia associated with an animal model of traumatic brain injury (TBI). This work then examined the effect of zinc supplementation on the proliferation of new cells in the hippocampus that have the potential to participate in neurogenesis. Rats were fed a zinc adequate (ZA, 30ppm) or zinc supplemented (ZS, 180ppm) diet for 4wk followed by TBI using controlled cortical impact. Stereological counts of EdU-positive cells showed that TBI doubled the density of proliferating cells 24h post-injury (p<0.05), and supplemental zinc significantly increased this by an additional 2-fold (p<0.0001). While the survival of these proliferating cells decreased at the same rate in ZA and in ZS rats after injury, the total density of newly born cells was approximately 60% higher in supplemented rats 1wk after TBI. Furthermore, chronic zinc supplementation resulted in significant increases in the density of new doublecortin-positive neurons one week post-TBI that were maintained for 4wk after injury (p<0.01). While the effect of zinc supplementation on neuronal precursor cells in the hippocampus was robust, use of targeted irradiation to eliminate these cells after zinc supplementation and TBI revealed that these cells are not the sole mechanism through which zinc acts to prevent depression associated with brain injury, and suggest that other zinc dependent mechanisms are needed for the anti-depressant effect of zinc in this model of TBI.