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1.
Metabolism ; 152: 155770, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38160935

RESUMEN

Circadian rhythms are evolutionarily programmed biological rhythms that are primarily entrained by the light cycle. Disruption of circadian rhythms is an important risk factor for several metabolic disorders. Photoperiod is defined as total duration of light exposure in a day. With the extended use of indoor/outdoor light, smartphones, television, computers, and social jetlag people are exposed to excessive artificial light at night increasing their photoperiod. Importantly long photoperiod is not limited to any geographical region, season, age, or socioeconomic group, it is pervasive. Long photoperiod is an established disrupter of the circadian rhythm and can induce a range of chronic health conditions including adiposity, altered hormonal signaling and metabolism, premature ageing, and poor psychological health. This review discusses the impact of exposure to long photoperiod on circadian rhythms, metabolic and mental health, hormonal signaling, and ageing and provides a perspective on possible preventive and therapeutic approaches for this pervasive challenge.


Asunto(s)
Ritmo Circadiano , Fotoperiodo , Humanos , Obesidad , Factores de Riesgo , Transducción de Señal
2.
Semin Thromb Hemost ; 2023 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-37813371

RESUMEN

Existing effective treatments for ischemic stroke restore blood supply to the ischemic region using thrombolysis or mechanical removal of clot. However, it is increasingly recognized that successful removal of occlusive thrombus from the large artery-recanalization, may not always be accompanied by successful restoration of blood flow to the downstream tissues-reperfusion. Ultimately, brain tissue survival depends on cerebral perfusion, and a functioning microcirculation. Because capillary diameter is often equal to or smaller than an erythrocyte, microcirculation is largely dependent on erythrocyte rheological (hemorheological) factors such as whole blood viscosity (WBV). Several studies in the past have demonstrated elevated WBV in stroke compared with healthy controls. Also, elevated WBV has shown to be an independent risk factor for stroke. Elevated WBV leads to endothelial dysfunction, decreases nitric oxide-dependent flow-mediated vasodilation, and promotes hemostatic alterations/thrombosis, all leading to microcirculation sludging. Compromised microcirculation further leads to decreased cerebral perfusion. Hence, modulating WBV through pharmacological agents might be beneficial to improve cerebral perfusion in stroke. This review discusses the effect of elevated WBV on endothelial function, hemostatic alterations, and thrombosis leading to reduced cerebral perfusion in stroke.

3.
Inquiry ; 60: 469580231180754, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37310064

RESUMEN

Drug-resistant tuberculosis (DRTB) is a growing concern worldwide. The poor rate of service delivery exacerbates the severity, leading to an increase in community transmission, which is further amplified by stigma. Health care workers (HCWs) are at the forefront lines of service delivery; their efforts are suspected of resulting in stigmatization, negatively impacting patient-centered care. However, little is known about DRTB-related stigma among these HCWs, and interventions are limited. Our scoping review is significant because it provides an overview of the DRTB stigma confronting HCWs and informs subsequent stigma-reduction initiatives. Utilizing Arksey and O'Malley framework, we exhaustively searched electronic databases for relevant English-language studies published from 2010 to 2022, identifying the drivers and facilitators of DRTB-related stigma among HCWs from high-TB and -DRTB burden countries, and compiling recommendations that could reduce DRTB stigma. From 443 de-duplicated papers, 11 articles on HCWs' DRTB-related stigma were reviewed and synthesized. Fear was mentioned across included articles as a stigma driver. Other reported stigma drivers identified included feelings of discrimination, isolation, danger, lack of support, shame, and stress. Poor infection control (IC) was the leading stigma facilitator. Other stigma facilitators identified were differing IC interpretations, workforce culture, and workplace inequality facilitating to stigmatization of HCWs. Three key recommendations identified were addressing infection control issues; increase the competence of healthcare workers; and provide psychosocial assistance, emphasizing HCW safety during DRTB activities. DRTB stigma among HCWs is multifaceted, largely driven by fear and facilitated by varying implementation or interpretations of policies within the workplace. Making HCWs feel safe while conducting DRTB activities is a priority issue that should be addressed by improving IC, training and psychosocial support. More studies investigating country-specific and multilevel DRTB-related stigma among HCWs are required to inform the development of an effective stigma intervention strategy.


Asunto(s)
Emociones , Estigma Social , Humanos , Miedo , Bases de Datos Factuales , Personal de Salud
4.
Artículo en Inglés | MEDLINE | ID: mdl-37174162

RESUMEN

Community health workers, also known as health extension workers (HEWs), play an important role in health promotion. This study evaluates HEWs' knowledge, attitude, and self-efficacy for non-communicable diseases (NCD) health promotion. HEWs (n = 203) completed a structured questionnaire on knowledge, attitude, behaviour, self-efficacy and NCD risk perception. Regression analysis was used to determine the association between self-efficacy and NCD risk perception with knowledge (high, medium, low), attitude (favourable/unfavourable) and physical activity (sufficient/insufficient). HEWs with higher self-efficacy were more likely to have high NCD knowledge (AOR: 2.21; 95% CI: 1.21. 4.07), favourable attitude towards NCD health promotion (AOR: 6.27; 95% CI: 3.11. 12.61) and were more physically active (AOR: 2.27; 95% CI: 1.08. 4.74) than those with lower self-efficacy. HEWs with higher NCD susceptibility (AOR: 1.89; 95% CI: 1.04. 3.47) and perceived severity (AOR: 2.69; 95% CI: 1.46, 4.93) had higher odds of NCD knowledge than their counterparts. Moreover, sufficient physical activity was influenced by HEWs' perceived NCD susceptibility and perceived benefits of lifestyle change. Therefore, HEWs need to adopt healthy lifestyle choices to become effective role models for the community. Our findings highlight the need to include a healthy lifestyle when training HEWs, which might increase self-efficacy for NCD health promotion.


Asunto(s)
Enfermedades no Transmisibles , Humanos , Enfermedades no Transmisibles/prevención & control , Conocimientos, Actitudes y Práctica en Salud , Agentes Comunitarios de Salud , Autoeficacia , Promoción de la Salud , Estilo de Vida Saludable , Percepción , Etiopía
5.
PLoS One ; 18(2): e0281238, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36735703

RESUMEN

The prevalence of stroke increases each year and while mortality from stroke has decreased, the prevalence of comorbidities such as anxiety, depression and fatigue affects as many as 75% of stroke survivors. The aetiology of post-stroke fatigue is not clear, although it has been shown to be interrelated with comorbidities such as stress and depression. Due to the interconnected nature of these comorbidities, it is important to improve the specificity of diagnosis and identify novel therapeutic targets to improve the quality of life for stroke survivors. The investigation of molecular biomarkers associated with post-stroke stress, fatigue, and depression may shed light on the relationships between comorbidities and also contribute to the development of novel diagnostics and therapies. Several biomarkers have been identified for stress, depression, and fatigue, some of which are specific to stroke survivors. However, there remain several gaps in understanding, particularly in relation to the physiological mechanisms underlying these side effects and molecular biomarkers associated with post-stroke fatigue. The aim of this scoping review protocol is to outline the methodologies that will be used to provide a comprehensive understanding of the current literature on biomarkers associated with post-stroke fatigue, stress, and depression, informing future research questions.


Asunto(s)
Depresión , Accidente Cerebrovascular , Humanos , Depresión/etiología , Depresión/epidemiología , Calidad de Vida , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/epidemiología , Fatiga/epidemiología , Sobrevivientes , Literatura de Revisión como Asunto
6.
JMIR Res Protoc ; 12: e43084, 2023 Jan 13.
Artículo en Inglés | MEDLINE | ID: mdl-36637899

RESUMEN

BACKGROUND: Drug-resistant tuberculosis (DRTB) is an increasing threat to human health and economic security worldwide. Exacerbating the severity of DRTB is the low rate of service delivery, leading to increased community transmission of the disease, further amplified by stigma. Health workers are on the front line of service delivery; their efforts in all areas of disease control are suspected of having resulted in stigmatization, impacting patient-centered care. As a growing concern, attention to addressing the DRTB stigma confronting health workers is required. However, little is known about stigma among health workers delivering services to patients with DRTB. This scoping review will provide an overview that could help inform appropriate responses toward stigma-reduction interventions for these health workers. OBJECTIVE: This scoping review protocol articulates a methodology that will examine the facets of DRTB-related stigma confronting health workers in high TB- and DRTB-burdened countries. This scoping review will (1) summarize stigma barriers and facilitators contributing to stigmatization among health workers delivering services to patients with DRTB, (2) identify the most common stigma barrier and facilitator, and (3) summarize the stigma-reduction intervention recommendations in the studies. METHODS: Guided by Arksey and O'Malley's framework and the recommendations of Munn et al, we will conduct a scoping review of relevant literature providing evidence of DRTB-related stigma among health workers from countries with a high burden of tuberculosis (TB) and DRTB. We will search published articles written in English from 2010 onward in electronic databases using Medical Subject Headings and keywords. Our search will apply a 3-step search strategy and use software tools to manage references and facilitate the entire scoping review process. The findings of our review will be presented following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Scoping Reviews checklist. Our study is registered with Open Science Framework Registries. RESULTS: This scoping review is part of a bigger project that will critically investigate stigma among health workers delivering services to patients resistant to TB medications. This study began in November 2021 and is expected to finish in 2023. The study has retrieved 593 abstracts out of 12,138 articles searched since February 2022 from the identified databases. The findings of this study will be published in a peer-reviewed journal. CONCLUSIONS: This review will provide an outline of the aspects of DRTB-related stigma confronting health workers. The findings of this review could help inform appropriate responses toward stigma-reduction interventions for these health workers. This is significant because interventions addressing related TB (and DRTB) stigma in the workplace are lacking. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/43084.

7.
Ann Behav Med ; 57(2): 111-130, 2023 02 04.
Artículo en Inglés | MEDLINE | ID: mdl-35689664

RESUMEN

BACKGROUND: Stroke can be a life-changing event, with survivors frequently experiencing some level of disability, reduced independence, and an abrupt lifestyle change. Not surprisingly, many stroke survivors report elevated levels of stress during the recovery process, which has been associated with worse outcomes. PURPOSE: Given the multiple roles of stress in the etiology of stroke recovery outcomes, we aimed to scope the existing literature on stress management interventions that have been trialed in stroke survivors. METHODS: We performed a database search for intervention studies conducted in stroke survivors which reported the effects on stress, resilience, or coping outcome. Medline (OVID), Embase (OVID), CINAHL (EBSCO), Cochrane Library, and PsycInfo (OVID) were searched from database inception until March 11, 2019, and updated on September 1, 2020. RESULTS: Twenty-four studies met the inclusion criteria. There was significant variation in the range of trialed interventions, as well as the outcome measures used to assess stress. Overall, just over half (13/24) of the included studies reported a benefit in terms of stress reduction. Acceptability and feasibility were considered in 71% (17/24) and costs were considered in 17% (4/24) of studies. The management of stress was rarely linked to the prevention of symptoms of stress-related disorders. The overall evidence base of included studies is weak. However, an increase in the number of studies over time suggests a growing interest in this subject. CONCLUSIONS: Further research is required to identify optimum stress management interventions in stroke survivors, including whether the management of stress can ameliorate the negative impacts of stress on health.


Asunto(s)
Psicoterapia , Accidente Cerebrovascular , Humanos , Accidente Cerebrovascular/terapia , Consejo , Estrés Psicológico/terapia , Estrés Psicológico/psicología , Sobrevivientes
8.
Glob Health Promot ; 30(1): 68-71, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36000808

RESUMEN

Health promotion is the most favorable approach and process to achieve a positive health outcome of the population. Several countries across the world are committed to achieving positive health for their people with the best health promotion strategies. Health promotion, in fact, shares a large portion of health care economy and resources in many countries. A low-income country like Nepal, however, lacks the implementation of rigorous health care strategies on a large scale and is deficient in evidence of the potential scope of health promotion. Nepal has adopted the global health promotion declaration on paper; however, health care providers and authorities are still working in a traditional way using existing health policies and strategies. This paper aims to explore some of the global best practices of health promotion, including the challenges and opportunities by adopting such practices in Nepal, and provides some recommendations as a way forward.


Asunto(s)
Política de Salud , Promoción de la Salud , Humanos , Nepal
9.
JNMA J Nepal Med Assoc ; 60(250): 511-516, 2022 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-35690976

RESUMEN

Introduction: Stroke is a leading cause of morbidity and disability in Asian population. Dyslipidemia is considered a major risk factor for various cardiovascular diseases. The study aimed to find the prevalence of dyslipidemia among patients with ischemic stroke in the Department of Medicine of a tertiary care centre. Methods: This is a descriptive cross-sectional study conducted among 150 diagnosed cases of ischemic stroke admitted in the Department of Medicine from 1st October, 2020 to 1st October, 2021. The ethical clearance was taken from the Institutional Review Committee (Reference number: 358/2077/78). Fasting blood samples were collected from the patients, serum lipids were measured and atherogenic indices of plasma were calculated. Demographic, anthropometric and cardiovascular risk factors related data were collected. Data were entered in Microsoft Excel 2010 and analysis was using the Statistical Package for the Social Sciences version 22.0. Point estimate at 95% Confidence Interval was calculated along with frequency and proportion for binary data, and mean and standard deviation for continuous data. Results: The prevalence of dyslipidemia among the ischemic stroke patients was 120 (80.00%) (73.60-86.40 at 95% Confidence Interval). High total cholesterol was found in 64 (53.33%) patients, high triglycerides in 70 (58.33%), high low-density lipoprotein cholesterol in 54 (45.00%) and low high-density lipoprotein cholesterol in 51 (42.50%) patients. Conclusions: The prevalence of dyslipidemia among ischemic stroke patients was higher than the studies done in similar settings. Keywords: dyslipidemia; ischemic stroke; lipid; prevalence.


Asunto(s)
Dislipidemias , Accidente Cerebrovascular Isquémico , Colesterol , HDL-Colesterol , Estudios Transversales , Humanos , Accidente Cerebrovascular Isquémico/epidemiología , Centros de Atención Terciaria , Triglicéridos
10.
Neurol Sci ; 43(4): 2375-2381, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-34669084

RESUMEN

Whole blood viscosity (WBV) is the intrinsic resistance to flow developed due to the frictional force between adjacent layers of flowing blood. Elevated WBV is an independent risk factor for stroke. Poor microcirculation due to elevated WBV can prevent adequate perfusion of the brain and might act as an important secondary factor for hypoperfusion in acute ischaemic stroke. In the present study, we examined the association of WBV with basal cerebral perfusion assessed by CT perfusion in acute ischaemic stroke. Confirmed acute ischemic stroke patients (n = 82) presenting in hours were recruited from the single centre. Patients underwent baseline multimodal CT (non-contrast CT, CT angiography and CT perfusion). Where clinically warranted, patients also underwent follow-up DWI. WBV was measured in duplicate within 2 h after sampling from 5-mL EDTA blood sample. WBV was significantly correlated with CT perfusion parameters such as perfusion lesion volume, ischemic core volume and mismatch ratio; DWI volume and baseline NIHSS. In a multivariate linear regression model, WBV significantly predicted acute perfusion lesion volume, core volume and mismatch ratio after adjusting for the effect of occlusion site and collateral status. Association of WBV with hypoperfusion (increased perfusion lesion volume, ischaemic core volume and mismatch ratio) suggest the role of erythrocyte rheology in cerebral haemodynamic of acute ischemic stroke. The present findings open new possibilities for therapeutic strategies targeting erythrocyte rheology to improve cerebral microcirculation in stroke.


Asunto(s)
Isquemia Encefálica , Accidente Cerebrovascular Isquémico , Accidente Cerebrovascular , Viscosidad Sanguínea , Isquemia Encefálica/complicaciones , Isquemia Encefálica/diagnóstico por imagen , Circulación Cerebrovascular/fisiología , Humanos , Perfusión , Accidente Cerebrovascular/complicaciones
12.
Biomolecules ; 11(7)2021 07 06.
Artículo en Inglés | MEDLINE | ID: mdl-34356618

RESUMEN

The cerebral endothelium is an active interface between blood and the central nervous system. In addition to being a physical barrier between the blood and the brain, the endothelium also actively regulates metabolic homeostasis, vascular tone and permeability, coagulation, and movement of immune cells. Being part of the blood-brain barrier, endothelial cells of the brain have specialized morphology, physiology, and phenotypes due to their unique microenvironment. Known cardiovascular risk factors facilitate cerebral endothelial dysfunction, leading to impaired vasodilation, an aggravated inflammatory response, as well as increased oxidative stress and vascular proliferation. This culminates in the thrombo-inflammatory response, an underlying cause of ischemic stroke and cerebral small vessel disease (CSVD). These events are further exacerbated when blood flow is returned to the brain after a period of ischemia, a phenomenon termed ischemia-reperfusion injury. Purinergic signaling is an endogenous molecular pathway in which the enzymes CD39 and CD73 catabolize extracellular adenosine triphosphate (eATP) to adenosine. After ischemia and CSVD, eATP is released from dying neurons as a damage molecule, triggering thrombosis and inflammation. In contrast, adenosine is anti-thrombotic, protects against oxidative stress, and suppresses the immune response. Evidently, therapies that promote adenosine generation or boost CD39 activity at the site of endothelial injury have promising benefits in the context of atherothrombotic stroke and can be extended to current CSVD known pathomechanisms. Here, we have reviewed the rationale and benefits of CD39 and CD39 therapies to treat endothelial dysfunction in the brain.


Asunto(s)
Adenosina Trifosfato/metabolismo , Enfermedades de los Pequeños Vasos Cerebrales/metabolismo , Endotelio Vascular/metabolismo , Accidente Cerebrovascular Isquémico/metabolismo , Transducción de Señal , Trombosis/metabolismo , Animales , Enfermedades de los Pequeños Vasos Cerebrales/patología , Endotelio Vascular/patología , Humanos , Inflamación/metabolismo , Inflamación/patología , Accidente Cerebrovascular Isquémico/patología , Trombosis/patología
13.
J Phys Act Health ; 18(6): 644-652, 2021 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-33952707

RESUMEN

BACKGROUND: Interrupting prolonged sitting can attenuate postprandial glucose responses in overweight adults. The dose-response effect in stroke survivors is unknown. The authors investigated the effects of interrupting 8 hours of prolonged sitting with increasingly frequent bouts of light-intensity standing-based exercises on the postprandial glucose response in stroke survivors. METHODS: Within-participant, laboratory-based, dose-escalation trial. Participants completed three 8-hour conditions: prolonged sitting and 2 experimental conditions. Experimental conditions involved light-intensity standing-based exercises of increasing frequency (2 × 5 min to 6 × 5 min bouts). Postprandial glucose is reported. RESULTS: Twenty-nine stroke survivors (aged 66 y) participated. Interrupting 8 hours of prolonged sitting with light-intensity standing-based exercises every 90 minutes significantly decreased postprandial glucose (positive incremental area under the curve; -1.1 mmol/L·7 h; 95% confidence interval, -2.0 to -0.1). In the morning (08:00-11:00), postprandial glucose decreased during the 4 × 5 minutes and 6 × 5 minutes conditions (positive incremental area under the curve; -0.8 mmol/L·3 h; 95% confidence interval, -1.3 to -0.3 and -0.8 mmol/L·3 h; 95% confidence interval, -1.5 to -0.2, respectively) compared with prolonged sitting. CONCLUSION: Interrupting 8 hours of prolonged sitting at least every 90 minutes with light-intensity standing-based exercises attenuates postprandial glucose in stroke survivors. During the morning, postprandial glucose is attenuated when sitting is interrupted every 60 and 90 minutes.


Asunto(s)
Glucemia , Glucosa , Adulto , Estudios Cruzados , Humanos , Insulina , Periodo Posprandial , Postura , Sobrevivientes , Caminata
14.
Br J Sports Med ; 2020 Dec 21.
Artículo en Inglés | MEDLINE | ID: mdl-33355155

RESUMEN

BACKGROUND: Cardiorespiratory fitness (CRF) is an important marker of current and future health status. The primary aim of our study was to evaluate the impact of a time-efficient school-based intervention on older adolescents' CRF. METHODS: Two-arm cluster randomised controlled trial conducted in two cohorts (February 2018 to February 2019 and February 2019 to February 2020) in New South Wales, Australia. Participants (N=670, 44.6% women, 16.0±0.43 years) from 20 secondary schools: 10 schools (337 participants) were randomised to the Burn 2 Learn (B2L) intervention and 10 schools (333 participants) to the control. Teachers in schools allocated to the B2L intervention were provided with training, resources, and support to facilitate the delivery of high-intensity interval training (HIIT) activity breaks during curriculum time. Teachers and students in the control group continued their usual practice. The primary outcome was CRF (20 m multi-stage fitness test). Secondary outcomes were muscular fitness, physical activity, hair cortisol concentrations, mental health and cognitive function. Outcomes were assessed at baseline, 6 months (primary end-point) and 12 months. Effects were estimated using mixed models accounting for clustering. RESULTS: We observed a group-by-time effect for CRF (difference=4.1 laps, 95% CI 1.8 to 6.4) at the primary end-point (6 months), but not at 12 months. At 6 months, group-by-time effects were found for muscular fitness, steps during school hours and cortisol. CONCLUSIONS: Implementing HIIT during curricular time improved adolescents' CRF and several secondary outcomes. Our findings suggest B2L is unlikely to be an effective approach unless teachers embed sessions within the school day. TRIAL REGISTRATION NUMBER: Australian New Zealand Clinical Trials Registry (ACTRN12618000293268).

15.
Sci Rep ; 10(1): 19545, 2020 11 11.
Artículo en Inglés | MEDLINE | ID: mdl-33177588

RESUMEN

For many chronic stroke survivors, persisting cognitive dysfunction leads to significantly reduced quality of life. Translation of promising therapeutic strategies aimed at improving cognitive function is hampered by existing, disparate cognitive assessments in animals and humans. In this study, we assessed post-stroke cognitive function using a comparable touchscreen-based paired-associate learning task in a cross-sectional population of chronic stroke survivors (≥ 5 months post-stroke, n = 70), age-matched controls (n = 70), and in mice generated from a C57BL/6 mouse photothrombotic stroke model (at six months post-stroke). Cognitive performance of stroke survivors was analysed using linear regression adjusting for age, gender, diabetes, systolic blood pressure and waist circumference. Stroke survivors made significantly fewer correct choices across all tasks compared with controls. Similar cognitive impairment was observed in the mice post-stroke with fewer correct choices compared to shams. These results highlight the feasibility and potential value of analogous modelling of clinically meaningful cognitive impairments in chronic stroke survivors and in mice in chronic phase after stroke. Implementation of validated, parallel cross-species test platforms for cognitive assessment offer the potential of delivering a more useful framework for evaluating therapies aimed at improving long-term cognitive function post-stroke.


Asunto(s)
Disfunción Cognitiva , Aprendizaje por Asociación de Pares , Accidente Cerebrovascular/psicología , Anciano , Animales , Estudios de Casos y Controles , Computadores , Femenino , Accidente Cerebrovascular Hemorrágico/complicaciones , Accidente Cerebrovascular Hemorrágico/psicología , Humanos , Masculino , Ratones Endogámicos C57BL , Persona de Mediana Edad , Accidente Cerebrovascular/complicaciones , Rehabilitación de Accidente Cerebrovascular
16.
Front Neurol ; 11: 589628, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33224099

RESUMEN

Rationale: More than half of patients who receive thrombolysis for acute ischaemic stroke fail to recanalize. Elucidating biological factors which predict recanalization could identify therapeutic targets for increasing thrombolysis success. Hypothesis: We hypothesize that individual patient plasmin potential, as measured by in vitro response to recombinant tissue-type plasminogen activator (rt-PA), is a biomarker of rt-PA response, and that patients with greater plasmin response are more likely to recanalize early. Methods: This study will use historical samples from the Barcelona Stroke Thrombolysis Biobank, comprised of 350 pre-thrombolysis plasma samples from ischaemic stroke patients who received serial transcranial-Doppler (TCD) measurements before and after thrombolysis. The plasmin potential of each patient will be measured using the level of plasmin-antiplasmin complex (PAP) generated after in-vitro addition of rt-PA. Levels of antiplasmin, plasminogen, t-PA activity, and PAI-1 activity will also be determined. Association between plasmin potential variables and time to recanalization [assessed on serial TCD using the thrombolysis in brain ischemia (TIBI) score] will be assessed using Cox proportional hazards models, adjusted for potential confounders. Outcomes: The primary outcome will be time to recanalization detected by TCD (defined as TIBI ≥4). Secondary outcomes will be recanalization within 6-h and recanalization and/or haemorrhagic transformation at 24-h. This analysis will utilize an expanded cohort including ~120 patients from the Targeting Optimal Thrombolysis Outcomes (TOTO) study. Discussion: If association between proteolytic response to rt-PA and recanalization is confirmed, future clinical treatment may customize thrombolytic therapy to maximize outcomes and minimize adverse effects for individual patients.

17.
Front Neurol ; 11: 230, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32390923

RESUMEN

Stroke survivors report significant levels of psychological distress post stroke. To date, most studies conducted have focused on the relationship between psychological stress and functional outcomes in the acute phase of stroke. However, no studies had considered the role of stress over the chronic phase, where stress may continue to exert negative effects on cognitive and psychological processes. Further, the role of potentially modulatory variables, such as psychological resilience, on stroke outcomes has been understudied. The purpose of this study was to consider the relationships between stress and resilience with functional outcomes in long-term survivors of stroke. People (N = 70) who had experienced a stroke between 5 months and 28 years ago were included in the cross-sectional study, along with age-matched controls (N = 70). We measured stress using both the Perceived Stress Scale and biological markers, and resilience using both the Brief Resilience Scale and the Connor-Davidson Resilience Scale. Stroke outcomes were assessed using the Stroke Impact Scale. We found that, compared with age-matched controls, stroke survivors reported greater levels of perceived stress, and lower levels of resilience. In stroke survivors, both perceived stress and resilience were independently associated with stroke outcomes in linear regression models. In particular, these relationships were observed for cognitive outcomes including mood, memory, and communication. The association between stress and stroke outcome did not differ across time post stroke. Given that resilience is a modifiable psychological construct, future research may consider whether strategies directed at enhancing resilience may improve recovery from stroke. Australia and New Zealand Clinical Trials Registry: ACTRN12617000736347.

18.
BMJ Open ; 10(3): e035592, 2020 03 26.
Artículo en Inglés | MEDLINE | ID: mdl-32220915

RESUMEN

INTRODUCTION: Several studies have shown that stroke survivors report experiencing high and unremitting levels of stress, which can negatively affect brain repair processes and psychological outcomes and thereby compromise recovery. However, it is presently unclear which interventions have been trialled to manage stress in stroke survivors and whether they translate to clinically relevant outcomes. The aim of this scoping review will be to examine stress management interventions in stroke survivors in order to map the types of interventions trialled, commonly reported stress outcome measures and whether a reduction in stress contributes to reductions in relevant clinical outcomes. METHODS AND ANALYSIS: The methodological framework described in Arksey and O'Malley will be applied to this review. A draft search strategy was developed in collaboration with an experienced senior health research librarian. A systematic search of Medline, Embase, CINAHL, Cochrane library, PsycInfo and Clinicaltrials.gov as well as hand searching of reference lists and reviews will identify relevant studies for inclusion. To be eligible for inclusion, studies must report on the outcomes of an intervention targeting stress management and resilience in stroke survivors. Study selection and critical appraisal of selected studies will be carried out independently by two authors, with discrepancies resolved by consensus. Data will be charted using a standard extraction form. Results will be tabulated and narratively summarised to highlight findings relevant to our research questions and to inform recommendations for future research. ETHICS AND DISSEMINATION: This study does not require ethics approval. This scoping review will provide a synthesis of evidence for stress management interventions in stroke survivors. It will identify and clarify the gaps in stress research specific to stroke pathologies and highlight promising interventions for future research. Findings will be relevant to researchers and healthcare workers and will be disseminated via publications in peer-reviewed journals and presented at conferences.


Asunto(s)
Estrés Psicológico/terapia , Accidente Cerebrovascular/psicología , Accidente Cerebrovascular/terapia , Sobrevivientes/psicología , Humanos , Literatura de Revisión como Asunto
19.
Brain Behav Immun Health ; 9: 100157, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34589899

RESUMEN

BACKGROUND: The precise mechanisms underlying the aetiology of post-stroke fatigue remain poorly understood. Inflammation has been associated with clinically significant fatigue across a number of neurological disorders; however, at present there is a lack of evidence regarding the association of fatigue and inflammation in the chronic phase of stroke recovery. AIMS: The aim of this study was to examine fatigue in a cohort of stroke survivors in the chronic phase of stroke, compared with matched controls, and to explore associations between the pro-inflammatory cytokine interleukin-6, high-sensitivity C-reactive Protein and fatigue. METHODS: We performed an exploratory cross-sectional study of 70 people in the chronic phase of stroke recovery, and 70 age matched controls. Fatigue was assessed using the Fatigue Assessment Scale. Interleukin-6 was measured in serum using a commercially available enzyme immunoassay kit. Both outcome measures were assessed contemporaneously. RESULTS: Clinically significant fatigue, defined as a score ≥24 on the Fatigue Assessment Scale, was reported by 60% of stroke survivors, and 15.7% of controls. The odds of experiencing clinically significant fatigue was 8.04 times higher among stroke survivors compared to control participants (odds ratio 8.045; 95% CI: 3.608, 17.939; P â€‹< â€‹0.001). The fatigue score was significantly correlated with the level of both interleukin-6 and high-sensitivity c-reactive protein, however once entered into a linear regression model with cardiovascular covariables, this relationship was no longer statistically significant. CONCLUSIONS: This study shows that fatigue may be associated with systemic inflammation in the chronic phase of stroke. The pathological mechanisms underlying post-stroke fatigue and its clinical implications require further study.

20.
JNMA J Nepal Med Assoc ; 57(216): 104-108, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31477942

RESUMEN

INTRODUCTION: Glucose meters are gaining popularity in monitoring of blood glucose at household levels and in health care set-ups due to their portability, affordability and convenience of use over the laboratory based reference methods. Still they are not free of limitations. Operator's technique, extreme temperatures, humidity, patients' medication, hematocrit values can affect the reliability of glucose meter results. Hence, the accuracy of glucose meter has been the topic of concern since years. Therefore, present study aims to evaluate the analytical and clinical accuracy of glucose meter using International Organization for Standardization 15197 guideline. METHODS: A community based descriptive cross-sectional study was conducted in Kapan, Kathmandu, Nepal in April 2018. Glucose levels were measured using glucose meter and reference laboratory method simultaneously among 203 adults ≥20 years, after an overnight fasting and two hours of ingestion of 75 grams glucose. Modified Bland-Altman plots were created by incorporating ISO 15197 guidelines to check the analytical accuracy and Park error grid was used to evaluate the clinical accuracy of the device. RESULTS: Modified Bland-Altman plots showed>95% of the test results were beyond the acceptable analytical criteria of ISO 15197:2003 and 2013. Park Error Grid-Analysis showed 99% of the data within zones A and B of the consensus error grid. CONCLUSIONS: Glucose meter readings were within clinically acceptable parameters despite discrepancies on analytical merit. Possible sources of interferences must be avoided during the measurement to minimize the disparities and the values should be interpreted with caution.


Asunto(s)
Automonitorización de la Glucosa Sanguínea/métodos , Glucemia/análisis , Adulto , Anciano , Anciano de 80 o más Años , Automonitorización de la Glucosa Sanguínea/normas , Estudios Transversales , Femenino , Hematócrito , Humanos , Humedad , Masculino , Persona de Mediana Edad , Nepal , Reproducibilidad de los Resultados , Temperatura , Adulto Joven
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