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OBJECTIVES: This study aimed to evaluate the association between the sociodemographic characteristics of caregivers and patients with stroke, clinical data on stroke, and disability with caregiver burden, hopelessness, and anxiety. MATERIALS AND METHODS: This cross-sectional study included patients with stroke of either sex, aged >18 years. Data were collected between January 2020 and July 2021. Patient demographic included age, sex, stroke type, severity, etiology, topography, treatment, and stroke recurrence. Stroke disability was assessed using the modified Rankin Scale and Barthel Index at 90 days post-discharge. Additionally, caregiver burden, hopelessness, and anxiety were evaluated during patient consultations using the Zarit Burden Interview (ZBI), Beck Hopelessness Scale (BHS), and Beck Anxiety Inventory (BAI). RESULTS: We included 104 patients with stroke and their caregivers. Overall caregiver burden was moderate (ZBI: 24 [25]), with mild hopelessness (BHS: 4 [4]) and minimal to mild anxiety (BAI: 8 [13]). The linear regression model presented in Table 3 showed that female caregivers scored up to 11 points higher on the Zarit Burden Interview (p = 0.011). Additionally, increased patient age was associated with a higher caregiver burden (p = 0.002) on the Zarit Burden Interview. Posterior circulation stroke and total anterior circulation stroke were also associated with higher Zarit Burden Interview scores compared to lacunar stroke (p = 0.017). Age was not associated with caregiver burden in the entire sample. However, an association between age and caregiver burden was found only in the female group. Furthermore, women aged 65 years and older experienced a more severe burden than women aged 18 to 64 years (p<0.001). Stroke disability was not associated with caregiver burden. CONCLUSIONS: Older female caregivers were significantly affected when caring for stroke patients. Total anterior circulation stroke and Posterior circulation stroke increased Zarit Burden Interview scores. However, no association was observed between stroke disability and the caregiver burden.
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We employed an early training exercise program, immediately after recovery from surgery, and before severe cardiac hypertrophy, to study the underlying mechanism involved with the amelioration of cardiac dysfunction in aortic stenosis (AS) rats. As ET induces angiogenesis and oxygen support, we aimed to verify the effect of exercise on myocardial lipid metabolism disturbance. Wistar rats were divided into Sham, trained Sham (ShamT), AS and trained AS (AST). The exercise consisted of 5-week sessions of treadmill running for 16 weeks. Statistical analysis was conducted by anova or Kruskal-Wallis test and Goodman test. A global correlation between variables was also performed using a two-tailed Pearson's correlation test. AST rats displayed a higher functional capacity and a lower cardiac remodelling and dysfunction when compared to AS, as well as the myocardial capillary rarefaction was prevented. Regarding metabolic properties, immunoblotting and enzymatic assay raised beneficial effects of exercise on fatty acid transport and oxidation pathways. The correlation assessment indicated a positive correlation between variables of angiogenesis and FA utilisation, as well as between metabolism and echocardiographic parameters. In conclusion, early exercise improves exercise tolerance and attenuates cardiac structural and functional remodelling. In parallel, exercise attenuated myocardial capillary and lipid metabolism derangement in rats with aortic stenosis-induced heart failure.
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Estenosis de la Válvula Aórtica , Insuficiencia Cardíaca , Condicionamiento Físico Animal , Ratas , Animales , Ratas Wistar , Metabolismo de los Lípidos , Insuficiencia Cardíaca/metabolismoRESUMEN
OBJECTIVE: Rehabilitation top-down techniques based on brain stimulation present variable outcomes in unilateral spatial neglect (USN) after stroke. This study aimed to examine the effects of physical therapy after anodal and cathodal transcranial direct current stimulation (A-tDCS and C-tDCS, respectively) to improve visuospatial and functional impairments in individuals with USN after stroke. METHODS: This double-blinded, pilot randomized clinical trial enrolled patients with USN after ischemic stroke. Randomization was stratified according to the Behavior Inattention Test-Conventional (BIT-C) and Catherine Bergego Scale (CBS). Outpatient physical therapy was conducted for 7.5 weeks after 20 minutes of tDCS. The primary outcome was the USN degree evaluated by the BIT-C. Secondary outcomes were the difference in CBS score, stroke severity (National Institutes of Health Stroke Scale [NIHSS]), disability (modified Rankin Scale), autonomy (Barthel Index, Functional Independence Measure), and quality of life (EuroQol Group 5-Dimension Self-Report Questionnaire). Outcomes were analyzed using an analysis of covariance model corrected by age, baseline NIHSS, and baseline BIT-C. Pairwise post hoc comparisons were performed using Bonferroni correction. RESULTS: In the primary outcomes, A-tDCS led to greater improvement in BIT-C after intervention (mean difference [MD] = 18.4, 95% confidence interval [CI] = 3.9-32.8, p = 0.008) compared to sham. However, no significant differences were observed between A-tDCS and C-tDCS (MD = 13.9, 95% CI = -0.3 to 28.1, p = 0.057), or C-tDCS and sham (MD = 4.5, 95% CI = -9.7 to 18.8, p = 0.99). There were no significant differences between groups in terms of secondary outcomes. INTERPRETATION: A-tDCS associated with physical therapy can decrease the severity of USN after stroke. However, these preliminary findings must be confirmed by collecting additional evidence in a larger phase 3 trial. ANN NEUROL 2022;92:400-410.
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Trastornos de la Percepción , Rehabilitación de Accidente Cerebrovascular , Accidente Cerebrovascular , Estimulación Transcraneal de Corriente Directa , Encéfalo , Humanos , Trastornos de la Percepción/etiología , Trastornos de la Percepción/terapia , Calidad de Vida , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/terapia , Estimulación Transcraneal de Corriente Directa/métodos , Resultado del TratamientoRESUMEN
Aerobic exercise training (AET) has been used to manage heart disease. AET may totally or partially restore the activity and/or expression of proteins that regulate calcium (Ca2+) handling, optimize intracellular Ca2+ flow, and attenuate cardiac functional impairment in failing hearts. However, the literature presents conflicting data regarding the effects of AET on Ca2+ transit and cardiac function in rats with heart failure resulting from aortic stenosis (AoS). This study aimed to evaluate the impact of AET on Ca2+ handling and cardiac function in rats with heart failure due to AoS. Wistar rats were distributed into two groups: control (Sham; n = 61) and aortic stenosis (AoS; n = 44). After 18 weeks, the groups were redistributed into: non-exposed to exercise training (Sham, n = 28 and AoS, n = 22) and trained (Sham-ET, n = 33 and AoS-ET, n = 22) for 10 weeks. Treadmill exercise training was performed with a velocity equivalent to the lactate threshold. The cardiac function was analyzed by echocardiogram, isolated papillary muscles, and isolated cardiomyocytes. During assays of isolated papillary muscles and isolated cardiomyocytes, the Ca2+ concentrations were evaluated. The expression of regulatory proteins for diastolic Ca2+ was assessed via Western Blot. AET attenuated the diastolic dysfunction and improved the systolic function. AoS-ET animals presented an enhanced response to post-rest contraction and SERCA2a and L-type Ca2+ channel blockage compared to the AoS. Furthermore, AET was able to improve aspects of the mechanical function and the responsiveness of the myofilaments to the Ca2+ of the AoS-ET animals. AoS animals presented an alteration in the protein expression of SERCA2a and NCX, and AET restored SERCA2a and NCX levels near normal values. Therefore, AET increased SERCA2a activity and myofilament responsiveness to Ca2+ and improved the cellular Ca2+ influx mechanism, attenuating cardiac dysfunction at cellular, tissue, and chamber levels in animals with AoS and heart failure.
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Estenosis de la Válvula Aórtica , Insuficiencia Cardíaca , Ratas , Animales , Calcio/metabolismo , Ratas Wistar , Insuficiencia Cardíaca/etiología , Insuficiencia Cardíaca/terapia , Insuficiencia Cardíaca/metabolismo , Miocitos Cardíacos/metabolismo , Calcio de la Dieta/metabolismo , Estenosis de la Válvula Aórtica/metabolismo , Ejercicio Físico , ATPasas Transportadoras de Calcio del Retículo Sarcoplásmico/metabolismoRESUMEN
PURPOSE: This study aimed to evaluate the effect of rice bran (RB) supplementation to a high-sugar fat (HSF) diet on cardiac dysfunction in an experimental obesity model. METHODS: Male Wistar rats were distributed into three groups: control, high-sugar fat, and high-sugar fat supplemented with 11% RB for 20 weeks. RESULTS: HSF diet promoted obesity and metabolic complications. Obese rats showed cardiac structural and functional impairment associated with high levels of interleukin-6, tumoral necrosis factor alpha, and malondialdehyde, and decreased activity of superoxide dismutase and catalase in the myocardium. RB supplementation was able to mitigate obesity and its metabolic alterations in HSF diet-fed animals. Moreover, the RB also prevented structural and functional damage, inflammation, and redox imbalance in the heart of these animals. CONCLUSION: This study suggests that RB supplementation prevents cardiac dysfunction in rats fed on HSF by modulating systemic metabolic complications and inflammation and oxidative stress in the myocardium, representing potential alternative therapy.
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Oryza , Animales , Citocinas/metabolismo , Dieta Alta en Grasa/efectos adversos , Masculino , Miocardio/metabolismo , Obesidad/metabolismo , Oryza/química , Oxidación-Reducción , Estrés Oxidativo , Ratas , Ratas WistarRESUMEN
BACKGROUND: Sickle cell anemia (SCA) is the leading cause of childhood stroke. We aimed to evaluate whether altered cerebral flow velocities, as measured by transcranial Doppler (TCD), are associated with vaso-occlusive complications in addition to stroke in pediatric SCA patients. METHODS: We evaluated 37 children aged between 2 and 16 years with SCA who underwent screening for TCD between January 2012 and October 2018. Genotypic profiles and demographic data were collected, TCD examinations were performed during follow-up, and the presence of sickling crises was compared. Survival analyses were performed using simple frailty models, in which each predictor variable was analyzed separately in relation to the occurrence of a sickling crisis. RESULTS: The variables related to sickle cell crises in the univariate analysis were peak systolic velocity (PSV) in the middle cerebral artery (MCA), hazard ratio (HR) 1.01 (1.00-1.02) p = 0.04; end-diastolic velocity (EDV) in the MCA, HR 1.02 (1.01-1.04) p = 0.01; time average mean maximum velocity (TAMMV) in the basilar artery (BA), HR 1.02 (1.00-1.04) p = 0.04; hemoglobin, HR 0.49 (0.38-0.65) p < 0.001; hematocrit, HR 0.78 (0.71-0.85) p < 0.001; leukocyte counts, HR 1.1 (1.05-1.15) p < 0.001; platelets counts, HR 0.997 (0.994-0.999) p = 0.02; and reticulocyte numbers, HR 1.14 (1.06-1.23) p < 0.001. CONCLUSIONS: Our results indicate PSV and EDV in the MCA and TAMMV in the BA as markers of risk for the occurrence of sickling crises in SCA.
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Anemia de Células Falciformes , Accidente Cerebrovascular , Adolescente , Anemia de Células Falciformes/complicaciones , Anemia de Células Falciformes/diagnóstico por imagen , Velocidad del Flujo Sanguíneo , Circulación Cerebrovascular , Niño , Preescolar , Estudios de Cohortes , Humanos , América Latina , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/etiologíaRESUMEN
OBJECTIVES: We aimed to evaluate the predictive performance of the PRISMA-7 frailty criteria regarding the composite outcome of disability or death in patients with an acute ischemic stroke, and to compare it with the Frailty Index and the National Institutes of Health Stroke Scale (NIHSS). MATERIALS AND METHODS: This prospective cohort study involved all patients aged ≥ 40 years admitted with an acute ischemic stroke between March 2019 and January 2020. We performed survival analyses, calculated risk ratios, sensitivity, specificity, and predictive values for the combined outcome of disability or death according to the presence of frailty as determined by the PRISMA-7 and the Frailty Index, and stroke severity based on the NIHSS. RESULTS: In 174 patients with acute ischemic stroke, being frail in the week before the stroke according to the PRISMA-7 was associated with a Risk Ratio of 4·50 (95%CI 1·77-11·43, P <0·001) and a Positive Predictive Value of 89% (95%CI 77-99%) for being disabled or dead 90 days after the stroke, and a Hazard Ratio of 3·33 (95%CI 1·48-7·51, P = 0·004) for the survival outcome. The predictive performance of the PRISMA-7 was not significantly different from the Frailty Index or the NIHSS. CONCLUSIONS: We provide evidence that the PRISMA-7 frailty criteria may be a useful prognostication tool in acute ischemic stroke.
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Isquemia Encefálica , Fragilidad , Accidente Cerebrovascular Isquémico , Accidente Cerebrovascular , Humanos , Fragilidad/diagnóstico , Isquemia Encefálica/diagnóstico , Isquemia Encefálica/terapia , Estudios Prospectivos , Pronóstico , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/terapiaRESUMEN
BACKGROUND/AIMS: Aortic stenosis-induced chronic pressure overload leads to cardiac dysfunction and congestive heart failure. The pathophysiological mechanisms of the myocardial impairment are multifactorial and include maladaptive ß-adrenergic signaling. Exercise training (ET) has been used as a non-pharmacological therapy for heart failure management. The present study tested the hypothesis that exercise training attenuates diastolic dysfunction through ß-adrenergic signaling preservation. METHODS: Wistar rats were submitted to ascending aortic stenosis (AS) surgery, and after 18 weeks, a moderate aerobic exercise training protocol was performed for ten weeks. RESULTS: ET attenuated diastolic dysfunction, evaluated by echocardiogram and isolated papillary muscle (IPM) assay. Also, ET reduced features of heart failure, cross-sectional cardiomyocyte area, and exercise intolerance, assessed by treadmill exercise testing. The ß2 adrenergic receptor protein expression was increased in AS rats independently of exercise. Interestingly, ET restored the protein levels of phosphorylated phospholamban at Serine 16 and preserved the ß-adrenergic receptor responsiveness as visualized by the lower myocardial compliance decline and time to 50% tension development and relaxation during ß-adrenergic stimulation in the IPM than untrained rats. Additionally, AS rats presented higher levels of TNFα and iNOS, which were attenuated by ET. CONCLUSION: Moderate ET improves exercise tolerance, reduces heart failure features, and attenuates diastolic dysfunction. In the myocardium, ET decreases the cross-sectional area of the cardiomyocyte and preserves the ß-adrenergic responsiveness, which reveals that the adjustments in ß-adrenergic signaling contribute to the amelioration of cardiac dysfunction by mild exercise training in aortic stenosis rats.
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Estenosis Aórtica Supravalvular/metabolismo , Insuficiencia Cardíaca Diastólica/terapia , Miocitos Cardíacos/metabolismo , Condicionamiento Físico Animal/fisiología , Receptores Adrenérgicos beta/metabolismo , Animales , Estenosis Aórtica Supravalvular/terapia , Proteínas de Unión al Calcio/metabolismo , Ecocardiografía , Prueba de Esfuerzo , Masculino , Miocardio/metabolismo , Miocitos Cardíacos/fisiología , Óxido Nítrico Sintasa de Tipo II/metabolismo , Músculos Papilares/fisiología , Fosforilación , Ratas , Ratas Wistar , Receptores Adrenérgicos beta/fisiología , Transducción de Señal/fisiología , Factor de Necrosis Tumoral alfa/metabolismoRESUMEN
BACKGROUND/AIMS: Considering the importance of inflammation on obesity-related disorders pathogenesis, including cardiac dysfunction, the interest in natural anti-inflammatory therapeutic strategies has emerged. The lycopene is a carotenoid presents in tomato and red fruits that displays anti-inflammatory properties. In this sense, we will evaluate the anti-inflamma-tory effect of tomato-oleoresin supplementation on obesity- related cardiac dysfunction by modulating myocardial calcium kinetic. METHODS: Male Wistar rats were initially randomized into 2 experimental groups: (Control, n= 20) or high sugar- fat diet (HSF, n=20) for 20 weeks. At week 20th, once detected the cardiac dysfunction (cardiac remodeling, systolic and diastolic dysfunction) by echocardiography in HSF group, animals were randomly divided to begin the treatment with tomato-oleoresin, performing 4 groups: Control (n= 10); Control + tomato tomato-oleoresin supplementation (Control + Ly, n= 10); HSF (n= 10) or HSF + tomato tomato-oleoresin supplementation (HSF + Ly, n= 10). Tomato oleoresin was mixed with maize oil equivalent to 10mg lycopene/kg body weight (BW) per day and given orally, by gavage, every morning for a 10-week period. It was analyzed cardiac inflammatory parameters by the enzyme-linked immunosorbent assay (ELISA) and in vivo (echocardiography) and in vitro (studying isolated papillary muscles from the left ventricle) cardiac function. The groups were compared by Two-Way analysis of variance (ANOVA). RESULTS: The HSF diet induced cardiac dysfunction (FS(%) C: 60.4±1.3; C+Ly: 60.9±1.3; HSF: 51.7±1.3; HSF+Ly: 59.4±1.4) and inflammation (TNF-α: C:1.88±0.41; C+Ly: 1.93±1.01; HSF: 4.58±1.99; HSF+Ly: 2.03±0.55; IL-6: C:0.58±0.16; C+Ly: 0.40±0.16; HSF: 2.00±0.45; HSF+Ly: 0.53±0.26; MCP-1: C:0.31±0.08; C+Ly: 0.43±0.22; HSF: 1.54±0.32; HSF+Ly: 0.50±0.16). Tomato-oleoresin supplementation improved cardiac remodeling and dysfunction, cardiac inflammation and myocardial calcium kinetic. CONCLUSION: the anti-inflammatory effect of tomato-oleoresin supplementation treated the obesity-induced cardiac dysfunction by modulating myocardial calcium handling.
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Antiinflamatorios/farmacología , Calcio/metabolismo , Dieta Alta en Grasa , Cardiopatías/tratamiento farmacológico , Inflamación/prevención & control , Obesidad/complicaciones , Extractos Vegetales/farmacología , Animales , Cardiopatías/etiología , Cardiopatías/metabolismo , Cardiopatías/patología , Inflamación/etiología , Inflamación/metabolismo , Inflamación/patología , Solanum lycopersicum , Masculino , Ratas , Ratas Wistar , Recuperación de la FunciónRESUMEN
BACKGROUND/AIMS: The beneficial effect of aerobic exercise training (ET) on cardiac remodeling caused by supravalvar aortic stenosis (AS) has been demonstrated in experimental studies; however, the mechanisms responsible for improving cardiac function are not entirely understood. We evaluated whether ET-generated cardioprotection in pressure-overloaded rats is dependent on cardiomyocyte proliferation, increased angiotensin-(1-7) (Ang-1-7) levels, and its receptor in the myocardium. METHODS: Eighteen weeks after ascending AS surgery, Wistar rats were randomly assigned to four groups: sedentary control (C-Sed), exercised control (C-Ex), sedentary aortic stenosis (AS-Sed) and exercised aortic stenosis (AS-Ex) groups. The moderate treadmill exercise protocol was performed for ten weeks. The functional capacity was assessed by treadmill exercise testing. Cardiac structure and function were evaluated by echocardiogram. Cardiomyocyte proliferation was evaluated by flow cytometry. Expression of cell cycle regulatory genes as CCND2, AURKB, CDK1, and MEIS1 was verified by RT-qPCR. Cardiac and plasma angiotensin I (Ang I), angiotensin II (Ang II), and Ang-(1-7) levels were analyzed by high-performance liquid chromatography (HPLC). The angiotensin-converting enzyme (ACE) activity was assessed by the fluorometric method and protein expression of AT1 and Mas receptors by Western blot. RESULTS: The AS-Ex group showed reduced left ventricular wall relative thickness and improved ejection fraction; also, it showed decreased gene expression of myocyte cell cycle regulators, ACE, Ang I, Ang II and Ang II/Ang-(1-7) ratio levels compared to AS-Sed group. However, ET did not induce alterations in Ang-(1-7) and cardiac Mas receptor expression and myocyte proliferation. CONCLUSION: Aerobic exercise training improves systolic function regardless of myocyte proliferation and Ang-(1-7)/Mas receptor levels. However, the ET negatively modulates the vasoconstrictor/hypertrophic axis (ACE/Ang II) and decreases the expression of negative regulatory genes of the cell cycle in cardiomyocytes of rats with supravalvular aortic stenosis.
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Angiotensina I/metabolismo , Estenosis Aórtica Supravalvular/metabolismo , Miocardio/metabolismo , Miocitos Cardíacos/metabolismo , Fragmentos de Péptidos/metabolismo , Condicionamiento Físico Animal/fisiología , Sistema Renina-Angiotensina/fisiología , Angiotensina II/metabolismo , Enzima Convertidora de Angiotensina 2/metabolismo , Animales , Estenosis Aórtica Supravalvular/enzimología , Estenosis Aórtica Supravalvular/genética , Aurora Quinasa B/genética , Aurora Quinasa B/metabolismo , Ciclo Celular/genética , Proliferación Celular/fisiología , Cromatografía Líquida de Alta Presión , Ciclina D2/genética , Ciclina D2/metabolismo , Ecocardiografía , Prueba de Esfuerzo , Masculino , Proteína 1 del Sitio de Integración Viral Ecotrópica Mieloide/genética , Proteína 1 del Sitio de Integración Viral Ecotrópica Mieloide/metabolismo , Ratas , Ratas WistarRESUMEN
BACKGROUND: Nutritional status may influence outcome after stroke. It is possible that some obese individuals present reduced fat-free mass. AIMS: We aimed to determine if bedside evaluation of body composition by the body mass index (BMI), adductor pollicis muscle thickness (APMT) and arm muscle area (AMA), and the combination of low APMT or AMA with obesity are associated with disability 90 days after stroke. METHODS: A cohort study evaluating 120 patients hospitalized at the Stroke Unit was carried out. Data were expressed as average ± standard deviation or median and percentiles. Obesity was evaluated by BMI and fat-free mass by the APMT and AMA. Receiver operating characteristic (ROC) curves and multivariate logistic regression analysis were used to measure whether APMT and obesity were associated with modified Rankin Scale (mRS) ≥3 (disability) within 90 days of stroke. The data were adjusted for National Institutes of Health Stroke Scale (NIHSS), sex, age, type of stroke, and thrombolysis. The significance level was 5%. RESULTS: Of 120 patients, we came up with the following demographics: men: 66 (55.0%); mean age: 66.6 ± 13.2 years; ischemic stroke: 109 (90.8%); mean NIHSS: 4 (2-10); thrombolysis: 18 (16.5%). Considering mRS ≥3, ROC curve analysis showed that the value of the cutoff for APMT was <12.5 mm. In multivariate analysis adjusted for the above factors, each 1 mm of increase in APTM reduced the chance of disability by 31%. The intersection of obesity with APMT <12.5 mm increased by 37-fold the risk of disability. AMA was not associated with mRS ≥3. CONCLUSION: Lower APMT alone or in combination with obesity was associated with poor functional status.
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Composición Corporal , Músculo Esquelético/fisiopatología , Estado Nutricional , Obesidad/complicaciones , Accidente Cerebrovascular/terapia , Adiposidad , Anciano , Área Bajo la Curva , Índice de Masa Corporal , Evaluación de la Discapacidad , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Músculo Esquelético/patología , Evaluación Nutricional , Obesidad/diagnóstico , Obesidad/fisiopatología , Valor Predictivo de las Pruebas , Curva ROC , Recuperación de la Función , Factores de Riesgo , Grosor de los Pliegues Cutáneos , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/fisiopatología , Factores de Tiempo , Resultado del TratamientoRESUMEN
Paroxysmal nocturnal hemoglobinuria (PNH) is a rare acquired disease characterized by clonal hematopoietic stem cell disorder, with increased mortality and morbidity. Venous thrombosis is the most common cause of mortality in PNH. The relationship between PNH and cerebrovascular disease is unclear; few cases are reported in the literature, most of them related to cerebral venous thrombosis; In PNH the involvement of intracranial and extracranial arterial sites is very rare. We report a case of a 49-year-old woman who has a medical history of diabetes mellitus, hypertension, and PNH and presented multiple lacunar strokes in a routine consultation with a hematologist. A brain computed tomography (CT) scan showed lacunar infarcts, and magnetic resonance image showed acute ischemic stroke, multiple territory lacunar infarctions, and focal area of microbleeds in gradient echo sequence. A CT angiography showed V3 and V4 branches of the left vertebral artery occluded by a thrombus, and the posterior inferior cerebellar artery occluded, whereas the carotid system was normal. We discuss the presentation and physiopathology of stroke in PNH and other cases reported in the literature review.
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Hemoglobinuria Paroxística/complicaciones , Trombosis Intracraneal/etiología , Accidente Vascular Cerebral Lacunar/etiología , Insuficiencia Vertebrobasilar/etiología , Angiografía Cerebral/métodos , Femenino , Hemoglobinuria Paroxística/diagnóstico , Humanos , Trombosis Intracraneal/diagnóstico por imagen , Trombosis Intracraneal/fisiopatología , Angiografía por Resonancia Magnética , Imagen por Resonancia Magnética , Persona de Mediana Edad , Accidente Vascular Cerebral Lacunar/diagnóstico por imagen , Accidente Vascular Cerebral Lacunar/fisiopatología , Tomografía Computarizada por Rayos X , Insuficiencia Vertebrobasilar/diagnóstico por imagen , Insuficiencia Vertebrobasilar/fisiopatologíaRESUMEN
BACKGROUND: During hospitalization, stroke patients are bedridden due to neurologic impairment, leading to loss of muscle mass, weakness, and functional limitation. There have been few studies examining respiratory muscle strength (RMS) in the acute phase of stroke. OBJECTIVE: This study aimed to evaluate the RMS of patients with acute stroke compared with predicted values and to relate this to anthropometric variables, risk factors, and neurologic severity. METHODS: This is a cross-sectional study in the acute phase of stroke. After admission, RMS was evaluated by maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP); anthropometric data were collected; and neurologic severity was evaluated by the National Institutes of Health Stroke Scale. The analysis of MIP and MEP with predicted values was performed by chi-square test, and the relationship between anthropometric variables, risk factors, and neurologic severity was determined through multiple linear regression followed by residue analysis by the Shapiro-Wilk test; P < .05 was considered statistically significant. RESULTS: In the 32 patients studied, MIP and MEP were reduced when compared with the predicted values. MIP declined significantly by 4.39 points for each 1 kg/m2 increase in body mass index (BMI), and MEP declined significantly by an average of 3.89 points for each 1 kg/m2 increase in BMI. There was no statistically significant relationship between MIP or MEP and risk factors, and between MIP or MIP and neurologic severity in acute phase of stroke. CONCLUSION: There is a reduction of RMS in the acute phase of stroke, and RMS was lower in individuals with increased age and BMI.
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Fuerza Muscular , Músculos Respiratorios/fisiopatología , Accidente Cerebrovascular/fisiopatología , Adulto , Anciano , Anciano de 80 o más Años , Envejecimiento/fisiología , Antropometría , Estudios Transversales , Femenino , Hemodinámica , Humanos , Modelos Lineales , Masculino , Presiones Respiratorias Máximas , Persona de Mediana Edad , Fuerza Muscular/fisiología , Obesidad/complicaciones , Obesidad/fisiopatología , Factores de Riesgo , Índice de Severidad de la Enfermedad , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/diagnósticoRESUMEN
INTRODUCTION: Blood pressure (BP) assessment affects the management of arterial hypertension (AH) in chronic kidney disease (CKD). CKD patients have specific patterns of BP behavior during ambulatory blood pressure monitoring (ABPM). OBJECTIVES: The aim of the current study was to evaluate the associations between progressive stages of CKD and changes in ABPM. METHODOLOGY: This is a cross-sectional study with 851 patients treated in outpatient clinics of a university hospital who underwent ABPM examination from January 2004 to February 2012 in order to assess the presence and control of AH. The outcomes considered were the ABPM parameters. The variable of interest was CKD staging. Confounding factors included age, sex, body mass index, smoking, cause of CKD, and use of antihypertensive drugs. RESULTS: Systolic BP (SBP) was associated with CKD stages 3b and 5, irrespective of confounding variables. Pulse pressure was only associated with stage 5. The SBP coefficient of variation was progressively associated with stages 3a, 4 and 5, while the diastolic blood pressure (DBP) coefficient of variation showed no association. SBP reduction was associated with stages 2, 4 and 5, and the decline in DBP with stages 4 and 5. Other ABPM parameters showed no association with CKD stages after adjustments. CONCLUSION: Advanced stages of CKD were associated with lower nocturnal dipping and greater variability in blood pressure.
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Monitoreo Ambulatorio de la Presión Arterial , Hipertensión , Insuficiencia Renal Crónica , Humanos , Estudios Transversales , Masculino , Femenino , Insuficiencia Renal Crónica/complicaciones , Insuficiencia Renal Crónica/fisiopatología , Persona de Mediana Edad , Hipertensión/complicaciones , Hipertensión/fisiopatología , Presión Sanguínea/fisiología , Anciano , Progresión de la Enfermedad , Adulto , Índice de Severidad de la EnfermedadRESUMEN
AIMS: A historic of preeclampsia (PE) has been associated with cardiovascular disease (CVD) in women. There are substantial evidences that cardiovascular changes resulting from PE can persist even after pregnancy end. Therefore, the aims was to evaluate the prevalence of myocardial hypertrophy in young women 12 months after PE event as well as try to identify risk factors for these changes. MATERIALS AND METHODS: Single-center observational prospective cross-sectional study that included 118 consecutive patients after 12 months of PE. Clinical and laboratory evaluations, echocardiogram were performed. Myocardial hypertrophy (LVH) was defined as an index myocardial mass ≥ 45 g/m2.7, for women. Classical risk factors for CVD were considered. Analysis included linear or logistic regression and Spearman's correlation coefficient. Significance level of 5 %. KEY FINDINGS: Systemic arterial hypertension (SAH) was identified in 52 patients (44 %), overweight/obesity (OOB) in 82 (69 %), dyslipidemia in 68 (57 %) and metabolic syndrome in 47 patients (40 %). LVH was present in 35 cases (29 %) and associated with OOB (OR = 4.51; CI95%:1.18-17.17, p < 0.001), in a model corrected for age and SAH diagnosis. When only the metabolic syndrome components were analyzed, in the multiple logistic regression model, the abdominal circumference was the only clinical variable associated with LVH (OR = 17.65; CI95%:3.70-84.17; p < 0.001). SIGNIFICANCE: It was observed a high prevalence of ventricular hypertrophy in young women with a history of pre-eclampsia. This condition was associated with the presence of obesity.
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Factores de Riesgo de Enfermedad Cardiaca , Preeclampsia , Humanos , Femenino , Preeclampsia/epidemiología , Embarazo , Adulto , Estudios Transversales , Estudios Prospectivos , Factores de Riesgo , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/etiología , Cardiomegalia/epidemiología , Cardiomegalia/etiología , Prevalencia , Obesidad/complicaciones , Obesidad/epidemiología , Hipertrofia Ventricular Izquierda/epidemiología , Hipertrofia Ventricular Izquierda/etiología , Adulto Joven , Síndrome Metabólico/complicaciones , Síndrome Metabólico/epidemiología , Hipertensión/epidemiología , Hipertensión/complicacionesRESUMEN
AIMS: To identify the cardiac biogenic amine profile of obese rats and associate these compounds with parameters of cardiovascular disease. MAIN METHODS: Wistar rats (n = 20) were randomly distributed into two groups: control and obese. Obesity was induced by a high-sugar fat diet. Biochemical parameters were evaluated. Doppler Echocardiography and systolic blood pressure; interleukin-10 (IL-10), tumor necrosis factor-alpha (TNF-α), protein carbonylation, ferric reducing antioxidant power (FRAP), and catalase activity were measured in cardiac tissue. HPLC evaluated the cardiac biogenic profile. Data were compared using the Student's T or Mann-Whitney tests and Spearman's correlation at 5% significance. The principal component analysis (PCA) was performed. KEY FINDINGS: Obesity generated hypertension, cardiac remodeling and dysfunction, and imbalanced all biochemical, inflammatory, and oxidative markers (p < 0.001). Eight biogenic amines were found in cardiac tissue. Obesity increased serotonin and decreased agmatine, putrescine, cadaverine, and spermidine. Serotonin (r = 0.534 to 0.808) was strong and positively correlated with obesity, biochemical parameters, cardiac inflammation, oxidative stress, hypertension, cardiac remodeling, and dysfunction (p < 0.001). Spermidine (r = -0.560 to -0.680), putrescine (r = -0.532 to -0.805), cadaverine (r = -0.534 to -0.860), and agmatine (r = -0.579 to -0.884) were inversely correlated with the same parameters (p < 0.001). PCA allowed for distinguishing the control and obese groups. SIGNIFICANCE: There are strong correlations between cardiac biogenic amine levels, cardiac remodeling, and dysfunction resulting from obesity. CONCLUSION: There is an association between cardiac biogenic amines and cardiovascular disease in obesity. In addition, agmatine, putrescine, cadaverine, and, mainly, serotonin may be new biomarkers for cardiovascular health in obesity and help to improve the diagnosis and treatment of CVD resulting or not from obesity. However, more research is needed to support this conclusion.
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INTRODUCTION: High sucrose intake is linked to cardiovascular disease, a major global cause of mortality worldwide. Calcium mishandling and inflammation play crucial roles in cardiac disease pathophysiology. OBJECTIVE: Evaluate if sucrose-induced obesity is related to deterioration of myocardial function due to alterations in the calcium-handling proteins in association with proinflammatory cytokines. METHODS: Wistar rats were divided into control and sucrose groups. Over eight weeks, Sucrose group received 30% sucrose water. Cardiac function was determined in vivo using echocardiography and in vitro using papillary muscle assay. Western blotting was used to detect calcium handling protein; ELISA assay was used to assess TNF-α and IL-6 levels. RESULTS: Sucrose led to cardiac dysfunction. RYR2, SERCA2, NCX, pPBL Ser16 and L-type calcium channels were unchanged. However, pPBL-Thr17, and TNF-α levels were elevated in the S group. CONCLUSION: Sucrose induced cardiac dysfunction and decreased myocardial contractility in association with altered pPBL-Thr17 and elevated cardiac pro-inflammatory TNF-α.
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Proteínas de Unión al Calcio , Ratas Wistar , Factor de Necrosis Tumoral alfa , Animales , Masculino , Ratas , Proteínas de Unión al Calcio/metabolismo , Interleucina-6/metabolismo , Contracción Miocárdica/efectos de los fármacos , Miocardio/metabolismo , Miocardio/patología , Fosforilación/efectos de los fármacos , Sacarosa/farmacología , Factor de Necrosis Tumoral alfa/metabolismoRESUMEN
Background: Since the implementation of the stroke care line in Brazil, the relationship (adequacy) of costs spent during hospitalization with the Brazilian Ministry of Health indicators for a stroke unit have not yet been analyzed. Aims: This study aimed to assess the adequacy of a comprehensive stroke center for key performance indicators and analyze the costs involved in hospitalization. We verified the association between stroke severity at admission and care costs during hospitalization. Methods: A retrospective medical chart review of 451 patients was performed using semiautomatic electronic data from a single comprehensive stroke center in Brazil between July 2018 and January 2020. Clinical and resource utilization data were collected, and the mean acute treatment cost per person was calculated. The Kruskal-Wallis test with Dunn's post-test was used to compare the total costs between stroke types and reperfusion therapies. A robust linear regression test was used to verify the association between stroke severity at hospital admission and the total hospitalization costs. Good adequacy rates were observed for several indicators. Results: Data from 451 patients were analyzed. The stroke unit had good adaptation to key performance indicators, but some critical points needed revision and improvement to adapt to the requirements of the Ministry of Health. The average total cost of the patient's stay was the USD 2,637.3, with the daily hospitalization, procedure, operating room, and materials/medication costs equating to USD 2,011.1, USD 220.7, USD 234.1, and USD 98.8, respectively. There was a positive association between the total cost and length of hospital stay (p < 0.001). Conclusion: The stroke unit complied with most of the main performance indicators proposed by the Brazilian Ministry of Health. Underfunding of the costs involved in the hospitalization of patients was verified, and high costs were associated with the length of stay, stroke severity, and mechanical thrombectomy.
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Benchmarking , Accidente Cerebrovascular , Humanos , Brasil , Estudios Retrospectivos , Hospitalización , Accidente Cerebrovascular/terapiaRESUMEN
Pentalogy of Fallot (PoF) is a congenital heart disease comprising tetralogy of Fallot plus an atrial septal defect (ASD). Patients are diagnosed early in life and submitted to reparative surgery. Without it, the prognosis is poor. This female patient, initially diagnosed with transposition of great arteries (TGA), ASD and a ventricular septal defect, got pregnant at 26 years old and had an early delivery due to fetal distress. She resumed follow-up, and her last echocardiogram put in doubt the diagnosis of TGA. Cardiac CT then revealed a PoF as well as pulmonary arteriovenous fistulas and a persistent left superior vena cava.
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Tumor necrosis factor inhibitors (anti-TNFs) are widely used therapies for the treatment of inflammatory bowel diseases (IBD); however, their administration is not risk-free. Heart failure (HF), although rare, is a potential adverse event related to administration of these medications. However, the exact mechanism of development of HF remains obscure. TNFα is found in both healthy and damaged hearts. Its effects are concentration- and receptor-dependent, promoting either cardio-protection or cardiomyocyte apoptosis. Experimental rat models with TNFα receptor knockout showed increased survival rates, less reactive oxygen species formation, and improved diastolic left ventricle pressure. However, clinical trials employing anti-TNF therapy to treat HF had disappointing results, suggesting abolishment of the cardioprotective properties of TNFα, making cardiomyocytes susceptible to apoptosis and oxidation. Thus, patients with IBD who have risk factors should be screened for HF before initiating anti-TNF therapy. This review aims to discuss adverse events associated with the administration of anti-TNF therapy, with a focus on HF, and propose some approaches to avoid cardiac adverse events in patients with IBD.