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1.
Nurs Stand ; 2024 Jun 17.
Artigo em Inglês | MEDLINE | ID: mdl-38881236

RESUMO

The primary purpose of gathering patient feedback is to listen to, reflect on and act on the feedback to improve patients' experiences, interactions and health outcomes. Nurses use patient feedback to guide person-centred care or to inform healthcare decisions. However, when healthcare services attempt to improve the quality of care, there can be a lack of process clarity, clear measurement and evidence of improvements. This article provides an overview of the strategies used to capture patient feedback and offers guidance on how nurses can make use of such information to promote healthcare improvement.

2.
BJPsych Open ; 10(4): e124, 2024 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-38826035

RESUMO

BACKGROUND: Childhood adversity is associated with increased later mental health problems and suicidal behaviour. Opportunities for earlier healthcare identification and intervention are needed. AIM: To determine associations between hospital admissions for childhood adversity and mental health in children who later die by suicide. METHOD: Population-based longitudinal case-control study. Scottish in-patient general and psychiatric records were summarised for individuals born 1981 or later who died by suicide between 1991 and 2017 (cases), and matched controls (1:10), for childhood adversity and mental health (broadly defined as psychiatric diagnoses and general hospital admissions for self-harm and substance use). RESULTS: Records were extracted for 2477 'cases' and 24 777 'controls'; 2106 cases (85%) and 13 589 controls (55%) had lifespan hospitalisations. Mean age at death was 23.7; 75.9% were male. Maltreatment or violence-related childhood adversity codes were recorded for 7.6% cases aged 10-17 (160/2106) versus 2.7% controls (371/13 589), odds ratio = 2.9 (95% CI, 2.4-3.6); mental health-related admissions were recorded for 21.7% cases (458/2106), versus 4.1% controls (560/13 589), odds ratio = 6.5 (95% CI, 5.7-7.4); 80% of mental health admissions were in general hospitals. Using conditional logistic models, we found a dose-response effect of mental health admissions <18y, with highest adjusted odds ratio (aOR) for three or more mental health admissions: aORmale = 8.17 (95% CI, 5.02-13.29), aORfemale = 15.08 (95% CI, 8.07-28.17). We estimated that each type of childhood adversity multiplied odds of suicide by aORmale = 1.90 (95% CI, 1.64-2.21), aORfemale = 2.65 (95% CI, 1.94-3.62), and each mental health admission by aORmale = 2.06 (95% CI, 1.81-2.34), aORfemale = 1.78 (95% CI, 1.50-2.10). CONCLUSIONS: Our lifespan study found that experiencing childhood adversity (primarily maltreatment or violence-related admissions) or mental health admissions increased odds of young person suicide, with highest odds for those experiencing both. Healthcare practitioners should identify and flag potential 'at-risk' adolescents to prevent future suicidal acts, especially those in general hospitals.

3.
JMIR Res Protoc ; 13: e51779, 2024 04 19.
Artigo em Inglês | MEDLINE | ID: mdl-38640479

RESUMO

BACKGROUND: This is a research proposal for a case study to explore how a national organization works in partnership with people with lived experience in national mental health improvement programs. Quality improvement is considered a key solution to addressing challenges within health care, and in Scotland, there are significant efforts to use quality improvement as a means of improving health and social care delivery. In 2016, Healthcare Improvement Scotland (HIS) established the improvement hub, whose purpose is to lead national improvement programs that use a range of approaches to support teams and services. Working in partnership with people with lived experience is recognized as a key component of such improvement work. There is, however, little understanding of how this is manifested in practice in national organizations. To address gaps in evidence and strengthen a consistent approach, a greater understanding is required to improve partnership working. OBJECTIVE: The aim of this study is to better understand how a national organization works in partnership with people who have lived experience with improvement programs in mental health services, exploring people's experiences of partnership working in a national organization. An exploratory case study approach will be used to address the research questions in relation to the Personality Disorder (PD) Improvement Programme: (1) How is partnership working described in the PD Improvement Programme? (2) How is partnership working manifested in practice in the PD Improvement Programme? and (3) What factors influence partnership working in the PD Improvement Programme? METHODS: An exploratory case study approach will be used in relation to the PD Improvement Programme, led by HIS. This research will explore how partnership working with people with lived experience is described and manifested in practice, outlining factors influencing partnership working. Data will be gathered from various qualitative sources, and analysis will deepen an understanding of partnership working. RESULTS: This study is part of a clinical doctorate program at the University of Stirling and is unfunded. Data collection was completed in October 2023; analysis is expected to be completed and results will be published in January 2025. CONCLUSIONS: This study will produce new knowledge on ways of working with people with lived experience and will have practical implications for all improvement-focused interventions. Although the main focus of the study is on national improvement programs, it is anticipated that this study will contribute to the understanding of how all national public service organizations work in partnership with people with lived experience of mental health care. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/51779.

4.
BMC Cancer ; 23(1): 1049, 2023 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-37915009

RESUMO

BACKGROUND: A robust evidence base is required to assist healthcare commissioners and providers in selecting effective and sustainable approaches to improve cancer diagnosis and treatment. Such evidence can be difficult to build, given the fast-paced and highly pressured nature of healthcare delivery, the absence of incentives, and the presence of barriers in conducting pragmatic yet robust research evaluations. Cancer Research UK (CRUK) has played an active part in building the evidence base through its funding of programmes to identify, evaluate and scale-up innovative approaches across the UK. The aim of this paper is to describe and explain the research design and intended approach and activities for two cancer services improvement projects in Scotland funded by CRUK. METHODS: A hybrid effectiveness-implementation study design will assess both the efficiency of the new pathways and their implementation strategies, with the aim of generating knowledge for scale-up. A range of implementation, service and clinical outcomes will be assessed as determined by the projects' Theories of Change (ToCs). A naturalistic case study approach will enable in-depth exploration of context and process, and the collection and synthesis of data from multiple sources including routine datasets, patient and staff surveys, in-depth interviews and observational and other data. The evaluations are informed throughout by a patient/public representatives' group, and by small group discussions with volunteer cancer patients. DISCUSSION: Our approach has been designed to provide a holistic understanding of how (well) the improvement projects work (in relation to their anticipated outcomes), and how they interact with their wider contexts. The evaluations will help identify barriers, facilitators, and unanticipated consequences that can impact scalability, sustainability and spread. By opting for a pragmatic, participatory evaluation research design, we hope to inform strategies for scaling up successful innovations while addressing challenges in a targeted manner.


Assuntos
Atenção à Saúde , Neoplasias , Humanos , Inquéritos e Questionários , Escócia , Neoplasias/diagnóstico , Neoplasias/terapia
5.
BMJ Qual Saf ; 30(1): 27-37, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32217699

RESUMO

BACKGROUND: Improving the quality and efficiency of healthcare is an international priority. A range of complex ward based quality initiatives have been developed over recent years, perhaps the most influential programme has been Productive Ward: Releasing Time to Care. The programme aims to improve work processes and team efficiency with the aim of 'releasing time', which would be used to increase time with patients ultimately improving patient care, although this does not form a specific part of the programme. This study aimed to address this and evaluate the impact using recent methodological advances in complex intervention evaluation design. METHOD: The objective of this study was to assess the impact of an augmented version of The Productive Ward: Releasing Time to Care on staff and patient outcomes. The design was a naturalistic stepped-wedge trial. The setting included fifteen wards in two acute hospitals in a Scottish health board region. The intervention was the Productive Ward: Releasing Time to Care augmented with practice development transformational change methods that focused on staff caring behaviours, teamwork and patient feedback. The primary outcomes included nurses' shared philosophy of care, nurse emotional exhaustion, and patient experience of nurse communication. Secondary outcomes covered additional key dimensions of staff and patient experience and outcomes and frequency of emergency admissions for same diagnosis within 6 months of discharge. RESULTS: We recruited 691 patients, 177 nurses and 14 senior charge nurses. We found statistically significant improvements in two of the study's three primary outcomes: patients' experiences of nurse communication (Effect size=0.15, 95% CI; 0.05 to 0.24), and nurses' shared philosophy of care (Effect size =0.42, 95% CI; 0.14 to 0.70). There were also significant improvements in secondary outcomes: patients' overall rating of ward quality; nurses' positive affect; and items relating to nursing team climate. We found no change in frequency of emergency admissions within six months of discharge. CONCLUSIONS: We found evidence that the augmented version of The Productive Ward: Releasing Time to Care Intervention was successful in improving a number of dimensions of nurse experience and ward culture, in addition to improved patient experience and evaluations of the quality of care received. Despite these positive summary findings across all wards, intervention implementation appeared to vary between wards. By addressing the contextual factors, which may influence these variations, and tailoring some elements of the intervention, it is likely that greater improvements could be achieved. TRIAL REGISTRATION NUMBER: UKCRN 14195.


Assuntos
Comunicação , Hospitais , Atenção à Saúde , Humanos , Assistência ao Paciente
6.
J Adv Nurs ; 76(11): 3190-3203, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32841439

RESUMO

AIM: To develop and test the psychometric properties of three instruments that measure Person-centred Caring: as Personalization, Participation and Responsiveness. DESIGN: A three-phase mixed methods design used two frameworks: content validity determination and quantification; consensus-based standards for selection of health measurement instruments. METHODS: A narrative literature review identified the domain definition. A systematic review of instruments provided the basis for item pools, which were refined by focus groups (N = 4) of multidisciplinary staff and service users (N = 25) and cognitive interviews (N = 11) with service users. Scale content validity indexes were calculated. Three cross-sectional surveys were conducted between April 2015 and June 2016. The instruments' psychometric properties tested included factor structure, internal consistency and construct validity. Convergent validity was tested, hypothesizing that: Personalization related to relational empathy; Participation related to empowerment; and Responsiveness related to trust. RESULTS: Scale content validity indexes were ≥0.96 in all instruments. Response rates were 24% (N = 191), 15% (N = 108) and 19% (N = 124). Two factors were revealed for the Personalization and Responsiveness instruments and one factor for the Participation instrument. All had acceptable: reliability (Cronbach's Alpha >0.7); construct validity (>50%); and convergent validity (Spearman's correlation coefficient >0.25, p < 0.05). CONCLUSION: This study composed definitions and instruments that reflect the multidisciplinary teams' caring behaviours, which have acceptable reliability and validity in the community population. Further psychometric testing of Participation and Responsiveness instruments should be undertaken with a larger sample. IMPACT: The instruments can be used to monitor the variability of multidisciplinary teams' caring behaviours; research effective interventions to improve caring behaviours; and increase understanding of the impact of caring on health outcomes.


Assuntos
Empatia , Estudos Transversais , Humanos , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
7.
J Comorb ; 5: 110-119, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-29090159

RESUMO

BACKGROUND: Social dimensions of health are known to contribute to what is often termed "patient complexity," which is particularly common among patients with multimorbidity. Health-care professionals require tools to help them identify and manage these aspects of patient needs. OBJECTIVES: To examine: (i) the Patient Centered Assessment Method (PCAM), a tool for assessing patient complexity in ways that are sensitive to the biopsychosocial dimensions of health, in primary care settings in Scotland; (ii) the impact of the PCAM on referral patterns and its perceived value; and (iii) the PCAM's perceived applicability for use in a complex patient population. DESIGN: Two studies are described: (i) a mixed-methods prospective cohort study of the implementation of the PCAM in primary care clinics; and (ii) a qualitative exploratory study that evaluated the value of the PCAM in a complex patient population. RESULTS: Use of the PCAM did not impact patient satisfaction or perception of practitioners' empathy, but it did increase both the number of onward referrals per referred patient (9-12%) and the proportion of referrals to non-medical services addressing psychological, social, and lifestyle needs. Nurses valued the PCAM, particularly its ability to help them address psychological and social domains of patients' lives, and found it to be highly relevant for use in populations with known high complexity. CONCLUSIONS: The PCAM represents a feasible approach for assessing patient needs with consideration to the social dimensions of health, and allows practitioners to refer patients to a broader range of services to address patient complexity.

8.
BMC Fam Pract ; 14: 46, 2013 Apr 04.
Artigo em Inglês | MEDLINE | ID: mdl-23557512

RESUMO

BACKGROUND: Routinely conducting case finding (also commonly referred to as screening) in patients with chronic illness for depression in primary care appears to have little impact. We explored the views and experiences of primary care nurses, doctors and managers to understand how the implementation of case finding/screening might impact on its effectiveness. METHODS: Two complementary qualitative focus group studies of primary care professionals including nurses, doctors and managers, in five primary care practices and five Community Health Partnerships, were conducted in Scotland. RESULTS: We identified several features of the way case finding/screening was implemented that may lead to systematic under-detection of depression. These included obstacles to incorporating case finding/screening into a clinical review consultation; a perception of replacing individualised care with mechanistic assessment, and a disconnection for nurses between management of physical and mental health. Far from being a standardised process that encouraged detection of depression, participants described case finding/screening as being conducted in a way which biased it towards negative responses, and for nurses, it was an uncomfortable task for which they lacked the necessary skills to provide immediate support to patients at the time of diagnosis. CONCLUSION: The introduction of case finding/screening for depression into routine chronic illness management is not straightforward. Routinized case finding/screening for depression can be implemented in ways that may be counterproductive to engagement (particularly by nurses), with the mental health needs of patients living with long term conditions. If case finding/screening or engagement with mental health problems is to be promoted, primary care nurses require more training to increase their confidence in raising and dealing with mental health issues and GPs and nurses need to work collectively to develop the relational work required to promote cognitive participation in case finding/screening.


Assuntos
Doença das Coronárias/diagnóstico , Transtorno Depressivo/diagnóstico , Programas de Rastreamento/métodos , Enfermeiras e Enfermeiros/psicologia , Avaliação de Processos e Resultados em Cuidados de Saúde , Médicos/psicologia , Análise por Conglomerados , Relações Comunidade-Instituição , Doença das Coronárias/terapia , Aconselhamento , Transtorno Depressivo/terapia , Grupos Focais , Humanos , Programas de Rastreamento/normas , Enfermeiras e Enfermeiros/estatística & dados numéricos , Variações Dependentes do Observador , Médicos/estatística & dados numéricos , Padrões de Prática em Enfermagem , Padrões de Prática Médica , Atenção Primária à Saúde , Relações Profissional-Paciente , Pesquisa Qualitativa , Escócia , Inquéritos e Questionários , Recursos Humanos
9.
Qual Life Res ; 19(7): 965-8, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20446045

RESUMO

PURPOSE: This study aimed to determine which methods of remote symptom assessment cancer outpatients would be comfortable using, including those involving information technology, and whether this varied with age and gender. METHODS: A questionnaire survey of 477 outpatients attending the Edinburgh Cancer Centre in Edinburgh, UK. RESULTS: Most patients reported that they would not feel comfortable using methods involving technology such as a secure website, email, mobile phone text message, or a computer voice on the telephone but that they would be more comfortable using more traditional methods such as a paper questionnaire, speaking to a nurse on the telephone, or giving information in person. CONCLUSIONS: The uptake of new, potentially cost-effective technology-based methods of monitoring patients' symptoms at home might be limited by patients' initial discomfort with the idea of using them. It will be important to develop methods of addressing this potential barrier (such as detailed explanation and supervised practice) if these methods are to be successfully implemented.


Assuntos
Serviços de Assistência Domiciliar , Neoplasias/terapia , Aceitação pelo Paciente de Cuidados de Saúde , Telemedicina , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Coleta de Dados , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Monitorização Ambulatorial/métodos , Adulto Jovem
10.
J Clin Oncol ; 26(29): 4725-30, 2008 Oct 10.
Artigo em Inglês | MEDLINE | ID: mdl-18695258

RESUMO

PURPOSE: Cancer is associated with an increased risk of suicide and attempted suicide. However, we do not know how many cancer patients have thoughts that they would be better off dead or thoughts of hurting themselves. This study aimed to determine the prevalence of such thoughts in cancer outpatients and which patients are most likely to have them. PATIENTS AND METHODS: A survey of consecutive patients who attended the outpatient clinics of a regional cancer center in Edinburgh, United Kingdom. Patients completed the Patient Health Questionnaire-9 (PHQ-9), which included Item 9 that asks patients if they have had thoughts of being better off dead or of hurting themselves in some way in the previous 2 weeks. Those who reported having had such thoughts for at least several days in this period were labeled as positive responders. Patients also completed the Hospital Anxiety and Depression Scale (HADS) and a pain scale. The participating patients' cancer diagnoses and treatments were obtained from the cancer center clinical database. RESULTS: Data were available on 2,924 patients; 7.8% (229 of 2,924; 95% CI, 6.9% to 8.9%) were positive responders. Clinically significant emotional distress, substantial pain, and--to a lesser extent--older age, were associated with a positive response. There was strong evidence of interactions between these effects, and emotional distress played the most important role. CONCLUSION: A substantial number of cancer outpatients report thoughts that they would be better off dead or thoughts of hurting themselves. Management of emotional distress and pain should be a central aspect of cancer care.


Assuntos
Neoplasias/psicologia , Pacientes Ambulatoriais/psicologia , Suicídio/psicologia , Suicídio/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Atitude Frente a Morte , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Pensamento , Reino Unido/epidemiologia
11.
Lancet ; 372(9632): 40-8, 2008 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-18603157

RESUMO

BACKGROUND: Major depressive disorder severely impairs the quality of life of patients with medical disorders such as cancer, but evidence to guide its management is scarce. We aimed to assess the efficacy and cost of a nurse-delivered complex intervention that was designed to treat major depressive disorder in patients who have cancer. METHODS: We did a randomised trial in a regional cancer centre in Scotland, UK. 200 outpatients who had cancer with a prognosis of greater than 6 months and major depressive disorder (identified by screening) were eligible and agreed to take part. Their mean age was 56.6 (SD 11.9) years, and 141 (71%) were women. We randomly assigned 99 of these participants to usual care, and 101 to usual care plus the intervention, with minimisation for sex, age, diagnosis, and extent of disease. The intervention was delivered by a cancer nurse at the centre over an average of seven sessions. The primary outcome was the difference in mean score on the self-reported Symptom Checklist-20 depression scale (range 0 to 4) at 3 months after randomisation. Analysis was by intention to treat. This trial is registered as ISRCTN84767225. FINDINGS: Primary outcome data were missing for four patients. For 196 patients for whom we had data at 3 months, the adjusted difference in mean Symptom Checklist-20 depression score, between those who received the intervention and those who did not, was 0.34 (95% CI 0.13-0.55). This treatment effect was sustained at 6 and 12 months. The intervention also improved anxiety and fatigue but not pain or physical functioning. It cost an additional pound sterling 5278 (US$10 556) per quality-adjusted life-year gained. INTERPRETATION: The intervention-Depression Care for People with Cancer-offers a model for the management of major depressive disorder in patients with cancer and other medical disorders who are attending specialist medical services that is feasible, acceptable, and potentially cost effective.


Assuntos
Transtorno Depressivo/terapia , Neoplasias/psicologia , Enfermagem Oncológica/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Antidepressivos/uso terapêutico , Aconselhamento , Transtorno Depressivo/classificação , Transtorno Depressivo/enfermagem , Feminino , Humanos , Classificação Internacional de Doenças , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Neoplasias/classificação , Neoplasias/terapia , Qualidade de Vida , Escócia , Índice de Gravidade de Doença , Inquéritos e Questionários , Resultado do Tratamento
12.
J Neurosci ; 27(39): 10487-96, 2007 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-17898220

RESUMO

Glucocorticoids are pivotal in the maintenance of memory and cognitive functions as well as other essential physiological processes including energy metabolism, stress responses, and cell proliferation. Normal aging in both rodents and humans is often characterized by elevated glucocorticoid levels that correlate with hippocampus-dependent memory impairments. 11Beta-hydroxysteroid dehydrogenase type 1 (11beta-HSD1) amplifies local intracellular ("intracrine") glucocorticoid action; in the brain it is highly expressed in the hippocampus. We investigated whether the impact of 11beta-HSD1 deficiency in knock-out mice (congenic on C57BL/6J strain) on cognitive function with aging reflects direct CNS or indirect effects of altered peripheral insulin-glucose metabolism. Spatial learning and memory was enhanced in 12 month "middle-aged" and 24 month "aged" 11beta-HSD1(-/-) mice compared with age-matched congenic controls. These effects were not caused by alterations in other cognitive (working memory in a spontaneous alternation task) or affective domains (anxiety-related behaviors), to changes in plasma corticosterone or glucose levels, or to altered age-related pathologies in 11beta-HSD1(-/-) mice. Young 11beta-HSD1(-/-) mice showed significantly increased newborn cell proliferation in the dentate gyrus, but this was not maintained into aging. Long-term potentiation was significantly enhanced in subfield CA1 of hippocampal slices from aged 11beta-HSD1(-/-) mice. These data suggest that 11beta-HSD1 deficiency enhances synaptic potentiation in the aged hippocampus and this may underlie the better maintenance of learning and memory with aging, which occurs in the absence of increased neurogenesis.


Assuntos
11-beta-Hidroxiesteroide Desidrogenase Tipo 1/fisiologia , Hipocampo/fisiologia , Potenciação de Longa Duração/fisiologia , Aprendizagem em Labirinto/fisiologia , Memória/fisiologia , Fatores Etários , Envelhecimento/fisiologia , Animais , Cognição/fisiologia , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout
13.
Brain Res Mol Brain Res ; 106(1-2): 117-23, 2002 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-12393271

RESUMO

As rats age, a subgroup will show spatial memory impairments, along with decreased corticosteroid receptors (MR and/or GR) in the hippocampus and a hyperactive hypothalamic-pituitary-adrenal axis. In previous work, we have shown that amitriptyline treatment increases hippocampal MR mRNA and improves spatial memory in young rats but had no effect in aged rats. Here, we examine the effect of 1-month treatment with the selective 5-HT re-uptake inhibitor, fluoxetine (10 mg/kg, p.o.) on hippocampal corticosteroid receptor mRNA and spatial memory in young 4-month-old and aged 24-month-old rats. Aged rats were impaired in spatial memory compared to young controls. MR mRNA expression was reduced with ageing in all hippocampal subfields except CA4 (35% decrease in dentate gyrus (DG) and CA2, P<0.05) and GR mRNA was decreased selectively in CA1 (17% decrease, P<0.05). Fluoxetine treatment increased GR mRNA in the hippocampus of young rats (24 and 46% increase in DG and CA3, respectively, P<0.01) but had no effect on hippocampal MR mRNA expression. In contrast, in aged rats, fluoxetine treatment increased hippocampal MR mRNA selectively in CA2 (43% increase, P<0.05), but had no effect on hippocampal GR mRNA. Fluoxetine treatment did not alter watermaze performance in either young or aged rats. It appears that increased hippocampal MR (at least in the CA2 region) which may underlie the enhancement in memory processing in young rats, is insufficient to improve memory in already cognitively impaired aged rats.


Assuntos
Envelhecimento/fisiologia , Encéfalo/efeitos dos fármacos , Fluoxetina/farmacologia , Memória/fisiologia , Receptores de Glucocorticoides/metabolismo , Receptores de Mineralocorticoides/metabolismo , Inibidores Seletivos de Recaptação de Serotonina/farmacologia , Animais , Encéfalo/metabolismo , Hibridização In Situ , Masculino , Aprendizagem em Labirinto/efeitos dos fármacos , Aprendizagem em Labirinto/fisiologia , Memória/efeitos dos fármacos , RNA Mensageiro/metabolismo , Ratos , Ratos Endogâmicos , Receptores de Glucocorticoides/genética , Receptores de Mineralocorticoides/genética
14.
J Neurosci ; 22(4): 1436-42, 2002 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-11850470

RESUMO

Increasing evidence links chronically elevated glucocorticoid levels and cognitive impairments in a subpopulation of aged rodents and humans. Antidepressant drugs improve hypothalamic-pituitary-adrenal axis feedback regulation and reduce plasma glucocorticoid levels. Decreasing the cumulative lifetime exposure to glucocorticoid excess by long-term exposure to antidepressants may prevent the emergence of cognitive impairments in aged rats. To test this hypothesis, we treated middle-aged male Lister hooded rats (16 months) with amitriptyline until they were 24 months of age, and their cognitive function was assessed in the water maze. Performance in the spatial learning task declined significantly with aging (p < 0.01), with 33% of aged controls showing poorer (<2.5 SD) probe test performance than young controls. Amitriptyline treatment from midlife preserved water maze performance with aging (p < 0.01 compared with aged controls) and significantly (p < 0.01) reduced the proportion of poor performers (7%). Measures of anxiety-related behaviors in the elevated plus-maze were significantly (p < 0.05) decreased in the aged rats after amitriptyline. Furthermore, evening plasma corticosterone levels were reduced (30% decrease; p < 0.01 compared with aged controls) after 6 months of amitriptyline. These data suggest that long-term treatment with amitriptyline decreases the prevalence of cognitive impairment in aged rats and that this may, in part, be a consequence of reduced plasma corticosterone levels and reduced anxiety.


Assuntos
Envelhecimento , Amitriptilina/administração & dosagem , Antidepressivos Tricíclicos/administração & dosagem , Aprendizagem em Labirinto/efeitos dos fármacos , Transtornos da Memória/prevenção & controle , Administração Oral , Glândulas Suprarrenais/efeitos dos fármacos , Envelhecimento/sangue , Animais , Ansiedade/tratamento farmacológico , Comportamento Animal/efeitos dos fármacos , Cognição/efeitos dos fármacos , Corticosterona/sangue , Esquema de Medicação , Masculino , Transtornos da Memória/sangue , Tamanho do Órgão/efeitos dos fármacos , Ratos , Ratos Endogâmicos , Tempo de Reação/efeitos dos fármacos
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