Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 182
Filtrar
Más filtros

Intervalo de año de publicación
1.
Int J Mol Sci ; 25(7)2024 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-38612917

RESUMEN

Evolocumab and empagliflozin yield a modest rise in plasma high-density lipoprotein cholesterol (HDL-C) through unknown mechanisms. This study aims to assess the effect of evolocumab plus empagliflozin vs. empagliflozin alone on HDL subspecies isolated from individuals with type 2 diabetes mellitus (T2D). This post hoc prespecified analysis of the EXCEED-BHS3 trial compared the effects of a 16-week therapy with empagliflozin (E) alone or in combination with evolocumab (EE) on the lipid profile and cholesterol content in HDL subspecies in individuals with T2D divided equally into two groups of 55 patients. Both treatments modestly increased HDL-C. The cholesterol content in HDL subspecies 2a (7.3%), 3a (7.2%) and 3c (15%) increased from baseline in the E group, while the EE group presented an increase from baseline in 3a (9.3%), 3b (16%) and 3c (25%). The increase in HDL 3b and 3c was higher in the EE group when compared to the E group (p < 0.05). No significant interactive association was observed between changes in hematocrit and HDL-C levels after treatment. Over a 16-week period, empagliflozin with or without the addition of evolocumab led to a modest but significant increase in HDL-C. The rise in smaller-sized HDL particles was heterogeneous amongst the treatment combinations.


Asunto(s)
Compuestos de Bencidrilo , Diabetes Mellitus Tipo 2 , Glucósidos , Humanos , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Anticuerpos Monoclonales Humanizados/uso terapéutico , HDL-Colesterol
2.
Mol Genet Metab ; 138(4): 107552, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36889041

RESUMEN

BACKGROUND AND AIMS: Low-density lipoprotein (LDL) plasma concentration decline is a biomarker for acute inflammatory diseases, including coronavirus disease-2019 (COVID-19). Phenotypic changes in LDL during COVID-19 may be equally related to adverse clinical outcomes. METHODS: Individuals hospitalized due to COVID-19 (n = 40) were enrolled. Blood samples were collected on days 0, 2, 4, 6, and 30 (D0, D2, D4, D6, and D30). Oxidized LDL (ox-LDL), and lipoprotein-associated phospholipase A2 (Lp-PLA2) activity were measured. In a consecutive series of cases (n = 13), LDL was isolated by gradient ultracentrifugation from D0 and D6 and was quantified by lipidomic analysis. Association between clinical outcomes and LDL phenotypic changes was investigated. RESULTS: In the first 30 days, 42.5% of participants died due to Covid-19. The serum ox-LDL increased from D0 to D6 (p < 0.005) and decreased at D30. Moreover, individuals who had an ox-LDL increase from D0 to D6 to over the 90th percentile died. The plasma Lp-PLA2 activity also increased progressively from D0 to D30 (p < 0.005), and the change from D0 to D6 in Lp-PLA2 and ox-LDL were positively correlated (r = 0.65, p < 0.0001). An exploratory untargeted lipidomic analysis uncovered 308 individual lipids in isolated LDL particles. Paired-test analysis from D0 and D6 revealed higher concentrations of 32 lipid species during disease progression, mainly represented by lysophosphatidyl choline and phosphatidylinositol. In addition, 69 lipid species were exclusively modulated in the LDL particles from non-survivors as compared to survivors. CONCLUSIONS: Phenotypic changes in LDL particles are associated with disease progression and adverse clinical outcomes in COVID-19 patients and could serve as a potential prognostic biomarker.


Asunto(s)
1-Alquil-2-acetilglicerofosfocolina Esterasa , COVID-19 , Humanos , Lipoproteínas LDL , Biomarcadores , Lisofosfatidilcolinas
3.
Nutr Metab Cardiovasc Dis ; 33(12): 2384-2388, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37798228

RESUMEN

BACKGROUND AND AIMS: Carotid intima-media thickness (cIMT) is inconsistent in predicting cardiovascular risk. This may stem from the variability of the media thickness (cM) outweighing the intimal thickness (cIT) as the sign of atherosclerosis. Thus, we evaluated in type 2 diabetes (T2D) individuals, the association between carotid measures and coronary artery calcification (CAC). METHODS AND RESULTS: Association between the presence of CAC and cIT, cM, and cIMT were examined on 224 individuals. Logistic binary regression was used to assess CAC predictors. The Akaike information criterion (AIC) and log-likelihood test (LLT) were used to assess differences among univariate models. The cIT (0.335 mm vs 0.363 mm; p = 0.001) and cIMT (0.715 vs 0.730; p = 0.019), but not cM (0.386 mm vs 0,393 mm; p = 0.089) were higher among individuals with CAC. In unadjusted analysis, cIT (273;-134; p = 0.001) showed greater relationship with CAC, when compared to cIMT (279;-137; p = 0.022) and cM (281;-139; p = 0.112) based on the AIC and LLT, respectively. In multivariate logistic regression, CAC was related to carotid plaque (OR): 1.91, 95% confidence interval (CI):1.08, 3.38; p = 0.027), and high-cIT (OR: 2.70, 95%CI:1.51, 4.84; p = 0.001), but not to high-cIMT (OR:1.70, 95%CI:0.96, 3.00; p = 0.067) nor high-cM (OR:1.33, 95%CI:0.76, 2.34; p = 0.322). CONCLUSION: In T2D individuals, cIT is a better predictor of CAC than cIMT; cM is not associated with CAC.


Asunto(s)
Enfermedades de las Arterias Carótidas , Enfermedad de la Arteria Coronaria , Diabetes Mellitus Tipo 2 , Humanos , Grosor Intima-Media Carotídeo , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/epidemiología , Brasil/epidemiología , Enfermedad de la Arteria Coronaria/diagnóstico por imagen , Enfermedad de la Arteria Coronaria/epidemiología , Enfermedad de la Arteria Coronaria/etiología , Factores de Riesgo , Enfermedades de las Arterias Carótidas/diagnóstico por imagen , Enfermedades de las Arterias Carótidas/epidemiología , Enfermedades de las Arterias Carótidas/etiología
4.
Cardiovasc Diabetol ; 21(1): 147, 2022 08 06.
Artículo en Inglés | MEDLINE | ID: mdl-35933413

RESUMEN

BACKGROUND: Sodium-glucose cotransporter 2 inhibitors (SGLT2i) improve endothelial dysfunction and reduce cardiovascular events in individuals with type 2 diabetes (T2D). Proprotein convertase subtilisin/kexin 9 (PCSK9i) inhibitors reduce cardiovascular events in high-risk patients. Whether the addition of PCSK9i to SGLT2i treatment adds benefits is not known. OBJECTIVES: To assess the PCSK9-i effect on the endothelial function of T2D individuals under treatment with SGLT2-i. METHODS: Individuals with T2D were randomized in a 1:1 ratio to a 16-week treatment with either empagliflozin (E) or empagliflozin plus evolocumab (EE). The primary endpoint was post-treatment change from baseline in flow-mediated dilation (FMD) at 1-min. Secondary outcomes included changes in plasma levels of nitric oxide metabolites and isoprostane. RESULTS: A total of 110 patients were enrolled, the mean age was 58 years, and 71% were men. The median post-treatment change in FMD at 1-min was 2.7% (interquartile range [IQR]: 0.9%) and 0.4% (IQR: 0.9%) in the EE and E groups, respectively (p < 0.001). There was a greater increase in plasma levels of nitrate [5.9 (16.5) vs. 2.6 (11.8); p = 0.001] and nitrite [0.14 (0.72) vs. 0.02 (0.74); p = 0.025] in the EE group than in the E group, respectively. Isoprostane reduction was more pronounced in the EE group when compared to the E group [-1.7 (5.9) vs. -1.1 (5.3); p < 0.001). CONCLUSIONS: In individuals with T2D, the addition of evolocumab on top of empagliflozin improves endothelial function.


Asunto(s)
Enfermedades Cardiovasculares , Diabetes Mellitus Tipo 2 , Anticuerpos Monoclonales Humanizados , Compuestos de Bencidrilo , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Femenino , Glucósidos , Humanos , Isoprostanos , Masculino , Persona de Mediana Edad , Inhibidores de PCSK9 , Proproteína Convertasa 9/metabolismo , Resultado del Tratamiento
5.
J Emerg Med ; 63(5): 656-660, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36243615

RESUMEN

BACKGROUND: Women have higher mortality from acute coronary syndrome (ACS) compared with men. Women may hesitate to search for emergency care when experiencing chest pain, which delays treatment. OBJECTIVE: Our aim was to evaluate the changes in emergency visits for chest pain according to sex and age during the COVID-19 pandemic period compared with previous years. METHODS: We collected data on chest pain visits (International Classification of Diseases, Tenth Revision, Clinical Modification codes I20 [unstable angina], I21 [myocardial infarction], and R07.1-4 [chest pain]) from all public emergency departments (EDs) in Curitiba, Brazil. We compared the weekly rates of visits per 100,000 habitants on the epidemiologic weeks 11-52 of 2020 (COVID-19 pandemic period) with the average rates of the same weeks of 2018 and 2019 using Poisson regression. RESULTS: From 2018 to 2020, 37,448 individuals presented to the ED for chest pain, of whom 8493 presented during the COVID-19 pandemic period. Compared with previous years, we observed a 23% reduction in chest pain visits (10.1 vs. 13.0 visits per 100,000 habitants/week; p < 0.001), but this reduction was greater in women than in men (30% vs. 15%; p < 0.001). This reduction was associated with age among women (27%, 31%, and 36% for < 50 years, between 50 and 69 years and > 70 years, respectively, p for age-related trend = 0.041), but not among men. CONCLUSIONS: In this population-level study of Curitiba, Brazil, the reduction in ED visits during the COVID-19 pandemic was greater in women than in men, particularly among those > 70 years of age, suggesting that the sex- and age-related disparities in health care delivery for ACS may have worsened during the COVID-19 pandemic.


Asunto(s)
Síndrome Coronario Agudo , COVID-19 , Masculino , Femenino , Humanos , Persona de Mediana Edad , Pandemias , Brasil/epidemiología , COVID-19/epidemiología , Dolor en el Pecho/epidemiología , Dolor en el Pecho/etiología , Servicio de Urgencia en Hospital , Síndrome Coronario Agudo/epidemiología , Síndrome Coronario Agudo/terapia , Estudios Retrospectivos
6.
Clin Infect Dis ; 73(5): e1219-e1221, 2021 09 07.
Artículo en Inglés | MEDLINE | ID: mdl-33373433

RESUMEN

We studied 2351 participants with coronavirus disease 2019; 1177 (50%) reported previous dengue infection. Those without previous dengue had a higher risk of death (hazard ratio: .44; 95% confidence interval: .22-.89; P = .023) in 60-day follow-up. These findings raise the possibility that dengue might induce immunological protection against severe acute respiratory syndrome coronavirus 2.


Asunto(s)
COVID-19 , Dengue , Dengue/epidemiología , Humanos , SARS-CoV-2
7.
Cardiovasc Diabetol ; 20(1): 74, 2021 03 26.
Artículo en Inglés | MEDLINE | ID: mdl-33771149

RESUMEN

BACKGROUND: The glucose-lowering independent effect of sodium glucose cotransporter-2 inhibitors (SGLT2i) on arterial wall function has not yet been clarified. This study aims to assess whether SGLT2i treatment can attenuate endothelial dysfunction related to type 2 diabetes mellitus (T2D) compared with glucose-lowering equivalent therapy. METHODS: In a prospective, open-label, single-center, randomized clinical trial, 98 patients with T2DM and carotid intima-media thickness above the 75th percentile were randomized 1:1 to 12 weeks of therapy with dapagliflozin or glibenclamide in addition to metformin in glucose-lowering equivalent regimens. The coprimary endpoints were 1-min flow-mediated dilation (FMD) at rest and 1-min FMD after 15 min of ischemia followed by 15 min of reperfusion time (I/R). RESULTS: Ninety-seven patients (61% males, 57 ± 7 years) completed the study. The median HbA1c decreased by - 0.8 (0.7)% and -0.7 (0.95)% following dapagliflozin and glibenclamide, respectively. The first coprimary endpoint, i.e., rest FMD changed by + 3.3(8.2)% and - 1.2(7.5)% for the dapagliflozin and glibenclamide arms, respectively (p = 0.0001). Differences between study arms in the second coprimary endpoint were not significant. Plasma nitrite 1 min after rest FMD was higher for dapagliflozin [308(220) nmol/L] than for glibenclamide (258[110] nmol/L; p = 0.028). The resistive indices at 1 min [0.90 (0.11) vs. 0.93 (0.07); p = 0.03] and 5 min [0.93 (0.07) vs. 0.95 (0.05); p = 0.02] were higher for the glibenclamide group than for the dapagliflozin group. Plasma biomarkers for inflammation and oxidative stress did not differ between the treatments. CONCLUSIONS: Dapagliflozin improved micro- and macrovascular endothelial function compared to glibenclamide, regardless of glycemic control in patients with T2DM and subclinical carotid atherosclerotic disease.


Asunto(s)
Compuestos de Bencidrilo/uso terapéutico , Glucemia/efectos de los fármacos , Enfermedades de las Arterias Carótidas/tratamiento farmacológico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Endotelio Vascular/efectos de los fármacos , Glucósidos/uso terapéutico , Gliburida/uso terapéutico , Inhibidores del Cotransportador de Sodio-Glucosa 2/uso terapéutico , Vasodilatación/efectos de los fármacos , Adulto , Anciano , Compuestos de Bencidrilo/efectos adversos , Biomarcadores/sangre , Glucemia/metabolismo , Brasil , Enfermedades de las Arterias Carótidas/sangre , Enfermedades de las Arterias Carótidas/diagnóstico por imagen , Enfermedades de las Arterias Carótidas/fisiopatología , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/fisiopatología , Quimioterapia Combinada , Endotelio Vascular/metabolismo , Endotelio Vascular/fisiopatología , Femenino , Glucósidos/efectos adversos , Gliburida/efectos adversos , Hemoglobina Glucada/metabolismo , Humanos , Masculino , Metformina/uso terapéutico , Persona de Mediana Edad , Estudios Prospectivos , Inhibidores del Cotransportador de Sodio-Glucosa 2/efectos adversos , Factores de Tiempo , Resultado del Tratamiento
8.
Arterioscler Thromb Vasc Biol ; 39(8): 1550-1564, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31189429

RESUMEN

Despite decades of therapeutic advances, myocardial infarction remains a leading cause of death worldwide. Recent studies have identified HDLs (high-density lipoproteins) as a potential candidate for mitigating coronary ischemia/reperfusion injury via a broad spectrum of signaling pathways. HDL ligands, such as S1P (sphingosine-1-phosphate), Apo (apolipoprotein) A-I, clusterin, and miRNA, may influence the opening of the mitochondrial channel, insulin sensitivity, and production of vascular autacoids, such as NO, prostacyclin, and endothelin-1. In parallel, antioxidant activity and sequestration of oxidized molecules provided by HDL can attenuate the oxidative stress that triggers ischemia/reperfusion. Nevertheless, during myocardial infarction, oxidation and the capture of oxidized and proinflammatory molecules generate large phenotypic and functional changes in HDL, potentially limiting its beneficial properties. In this review, new findings from cellular and animal models, as well as from clinical studies, will be discussed to describe the cardioprotective benefits of HDL on myocardial infarction. Furthermore, mechanisms by which HDL modulates cardiac function and potential strategies to mitigate postmyocardial infarction risk damage by HDL will be detailed throughout the review.


Asunto(s)
Lipoproteínas HDL/fisiología , Infarto del Miocardio/prevención & control , Animales , Colesterol/metabolismo , Células Endoteliales/fisiología , Glucosa/metabolismo , Homeostasis , Humanos , Lipoproteínas HDL/sangre , Lisofosfolípidos/fisiología , Estrés Oxidativo , Transducción de Señal/fisiología , Esfingosina/análogos & derivados , Esfingosina/fisiología
9.
Value Health ; 23(12): 1570-1579, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-33248512

RESUMEN

OBJECTIVES: Traditional risk scores improved the definition of the initial therapeutic strategy in acute coronary syndrome (ACS), but they were not designed for predicting long-term individual risks and costs. In parallel, attempts to directly predict costs from clinical variables in ACS had limited success. Thus, novel approaches to predict cardiovascular risk and health expenditure are urgently needed. Our objectives were to predict the risk of major/minor adverse cardiovascular events (MACE) and estimate assistance-related costs. METHODS: We used a 2-step approach that: (1) predicted outcomes with a common pathophysiological substrate (MACE) by using machine learning (ML) or logistic regression (LR) and compared with existing risk scores; (2) derived costs associated with noncardiovascular deaths, dialysis, ambulatory-care-sensitive-hospitalizations (ACSH), strokes, and MACE. With consecutive ACS individuals (n = 1089) from 2 cohorts, we trained in 80% of the population and tested in 20% using a 4-fold cross-validation framework. The 29-variable model included socioeconomic, clinical/lab, and coronarography variables. Individual costs were estimated based on cause-specific hospitalization from the Brazilian Health Ministry perspective. RESULTS: After up to 12 years follow-up (mean = 3.3 ± 3.1; MACE = 169), the gradient-boosting machine model was superior to LR and reached an area under the curve (AUROC) of 0.891 [95% CI 0.846-0.921] (test set), outperforming the Syntax Score II (AUROC = 0.635 [95% CI 0.569-0.699]). Individuals classified as high risk (>90th percentile) presented increased HbA1c and LDL-C both at <24 hours post-ACS and 1-year follow-up. High-risk individuals required 33.5% of total costs and showed 4.96-fold (95% CI 3.71-5.48, P < .00001) greater per capita costs compared with low-risk individuals, mostly owing to avoidable costs (ACSH). This 2-step approach was more successful for finding individuals incurring high costs than predicting costs directly from clinical variables. CONCLUSION: ML methods predicted long-term risks and avoidable costs after ACS.


Asunto(s)
Síndrome Coronario Agudo/economía , Ahorro de Costo/estadística & datos numéricos , Costos de la Atención en Salud/estadística & datos numéricos , Aprendizaje Automático , Síndrome Coronario Agudo/complicaciones , Anciano , Ahorro de Costo/economía , Femenino , Humanos , Masculino , Morbilidad , Factores de Riesgo , Resultado del Tratamiento
10.
Nutr Metab Cardiovasc Dis ; 30(2): 254-264, 2020 02 10.
Artículo en Inglés | MEDLINE | ID: mdl-31753789

RESUMEN

BACKGROUND AND AIM: Obesity-related decline in high-density lipoprotein (HDL) functions such as cholesterol efflux capacity (CEC) has supported the notion that this lipoprotein dysfunction may contribute for atherogenesis among obese patients. We investigated if potentially other HDL protective actions may be affected with weight gain and these changes may occur even before the obesity range in a cross-sectional analysis. METHODS AND RESULTS: Lipid profile, body mass index (BMI), biochemical measurements, and carotid intima-media thickness (cIMT) were obtained in this cross-sectional study with 899 asymptomatic individuals. Lipoproteins were separated by ultracentrifugation and HDL physical-chemical characterization, CEC, antioxidant activity, anti-inflammatory activity, HDL-mediated platelet aggregation inhibition were measured in a randomly-selected subgroup (n = 101). Individuals with increased HDL-C had an attenuated increase in cIMT with elevation of BMI (interaction effect ß = -0.054; CI 95% -0.0815, -0.0301). CEC, HDL-C, HDL size and HDL-antioxidant activity were negatively associated with cIMT. BMI was inversely correlated with HDL-mediated inhibition of platelet aggregation (Spearman's rho -0.157, p < 0.03) and CEC (Spearman's rho -0.32, p < 0.001), but surprisingly it was directly correlated with the antioxidant activity (Spearman's rho 0.194, p = 0.052). Thus, even in non-obese, non-diabetic individuals, increased BMI is associated with a wide change in protective functions of HDL, reducing CEC and increasing antioxidant activity. In these subjects, decreased HDL concentration, size or function are related to increased atherosclerotic burden. CONCLUSION: Our findings demonstrate that in non-obese, non-diabetic individuals, the increasing values of BMI are associated with impaired protective functions of HDL and concomitant increase in atherosclerotic burden.


Asunto(s)
HDL-Colesterol/sangre , Dislipidemias/sangre , Sobrepeso/sangre , Aumento de Peso , Adulto , Anciano , Antioxidantes/análisis , Biomarcadores/sangre , Índice de Masa Corporal , Enfermedades de las Arterias Carótidas/sangre , Enfermedades de las Arterias Carótidas/diagnóstico por imagen , Enfermedades de las Arterias Carótidas/fisiopatología , Grosor Intima-Media Carotídeo , Estudios Transversales , Dislipidemias/diagnóstico , Dislipidemias/fisiopatología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Sobrepeso/diagnóstico , Sobrepeso/fisiopatología , Agregación Plaquetaria , Medición de Riesgo , Factores de Riesgo , Adulto Joven
12.
Nutr J ; 18(1): 29, 2019 05 06.
Artículo en Inglés | MEDLINE | ID: mdl-31060562

RESUMEN

BACKGROUND: Myocardial infarction (MI) elicits an intense acute inflammatory response that is essential for cardiac repair. However, an excessive inflammatory response also favors myocardial apoptosis, cardiac remodeling, and cardiovascular mortality. Omega-3 polyunsaturated fatty acids (ω-3) bear anti-inflammatory effects, which may mitigate the inflammatory response during MI. This study investigated whether ω-3 intake is associated with attenuation of the MI-related inflammatory response and cardiac remodeling. METHODS: ST-elevation MI (STEMI) patients (n = 421) underwent clinical, biochemical, nutritional, 3D echocardiogram, Cardiac Magnetic Resonance imaging (CMRi) at 30 days and 3D echocardiogram imaging at six months after the MI. Blood tests were performed at day one (D1) and day five (D5) of hospitalization. Changes in inflammatory markers (ΔD5-D1) were calculated. A validated food frequency questionnaire estimated the nutritional consumption and ω-3 intake in the last 3 months before admission. RESULTS: The intake of ω-3 below the median (< 1.7 g/day) was associated with a short-term increase in hs-C-reactive protein [OR:1.96(1.24-3.10); p = 0.004], Interleukin-2 [OR:2.46(1.20-5.04); p = 0.014], brain-type natriuretic peptide [OR:2.66(1.30-5.44); p = 0.007], left-ventricle end-diastolic volume [OR:5.12(1.11-23.52)]; p = 0.036] and decreases in left-ventricle ejection fraction [OR:2.86(1.47-6.88); p = 0.017] after adjustment for covariates. No differences were observed in the extension of infarcted mass obtained by CMRi. CONCLUSION: These findings suggest that a reduced daily intake of ω-3 may intensify outcome-determining mechanisms after STEMI, such as acute inflammatory response and late left ventricular remodeling. TRIAL REGISTRATION: Clinical Trial Registry number and website: NCT02062554 .


Asunto(s)
Ácidos Grasos Omega-3/farmacología , Inflamación/sangre , Inflamación/etiología , Infarto del Miocardio con Elevación del ST/complicaciones , Remodelación Ventricular/fisiología , Biomarcadores/sangre , Brasil , Estudios de Cohortes , Ecocardiografía Tridimensional/métodos , Ácidos Grasos Omega-3/administración & dosificación , Femenino , Estudios de Seguimiento , Ventrículos Cardíacos/diagnóstico por imagen , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Infarto del Miocardio con Elevación del ST/sangre , Infarto del Miocardio con Elevación del ST/diagnóstico por imagen , Encuestas y Cuestionarios
13.
J Card Fail ; 24(11): 753-762, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-30300684

RESUMEN

BACKGROUND: We studied the relationship between resting heart rate (HR), chronotropic response to exercise, and clinical outcomes in patients with heart failure (HF) across the spectrum of left ventricle ejection fraction (LVEF). METHODS AND RESULTS: Resting HR and chronotropic index (CIx) were assessed in 718 patients with HF (53 ± 14 years of age, 66% male) referred for exercise testing. Associations with the composite outcome of left ventricular assist device implantation, transplantation, or death (151 events, 4.4 [range 3.0-5.8] years of follow-up) were assessed with the use of Cox models adjusted for age, sex, HF etiology, diabetes, LVEF, beta-blocker use, device therapy, estimated glomerular filtration rate, and peak oxygen uptake. Resting HR was 73 ± 15 beats/min, CIx was 0.60 ± 0.26, LVEF was 34% ± 15%, and 39% had an LVEF ≥40%. Resting HR correlated poorly with CIx (r = 0.08; P = .04) and did not predict (P = .84) chronotropic incompetence (CIx <0.60). Both higher resting HR (per 5 beats/min increase: adjusted hazard ratio [HR] -1.05, 95% confidence interval [CI] 1.00-1.11) and CIx (per SD change: adjusted HR -0.77, 95% CI 0.62-0.94) were independent prognostic markers. No heterogeneity of effect was noted based on LVEF (P >.05). CONCLUSION: Higher resting HR and lower CIx are both associated with more severe HF, but correlated poorly with each other. They provide independent and additive prognostic information in HF across the LVEF spectrum.


Asunto(s)
Ejercicio Físico/fisiología , Insuficiencia Cardíaca/fisiopatología , Frecuencia Cardíaca/fisiología , Contracción Miocárdica/fisiología , Descanso/fisiología , Volumen Sistólico/fisiología , Función Ventricular Izquierda/fisiología , Ecocardiografía , Prueba de Esfuerzo , Femenino , Estudios de Seguimiento , Insuficiencia Cardíaca/diagnóstico , Ventrículos Cardíacos/diagnóstico por imagen , Ventrículos Cardíacos/fisiopatología , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Factores de Tiempo
14.
Arch Phys Med Rehabil ; 99(8): 1561-1567.e1, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29548578

RESUMEN

OBJECTIVE: To investigate the relationship of carotid artery intima-media thickness (IMT) and cardiac structure and function with adipocytokines in sedentary (S-SCI) and physically active (PA-SCI) subjects with spinal cord injury (SCI). DESIGN: Cross-sectional observational study. SETTING: Academic medical center. PARTICIPANTS: Men with chronic (>1y) SCI (N=41; 16 S-SCI, 25 PA-SCI) were evaluated. S-SCI subjects did not perform labor that required physical effort, recreational physical activity, or sports, while PA-SCI subjects included competing athletes who were regularly performing adapted sports. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Clinical, laboratory, carotid ultrasonography, and echocardiography analysis. Plasma leptin, adiponectin, and plasminogen activating inhibitor-1 (PAI-1) levels were determined. RESULTS: PA-SCI subjects had similar levels of adipocytokines, but lower carotid IMT and carotid IMT/diameter, and better left ventricular diastolic function than S-SCI participants. Bivariate analysis showed that adiponectin was inversely correlated with triglycerides (r=-.85, P<.001), low-density lipoprotein cholesterol (r=-.57, P<.05), and carotid IMT/diameter (r=-.56, P<.05) in S-SCI but not in PA-SCI participants. Additionally, the leptin-adiponectin ratio showed a direct correlation with triglycerides (r=.84, P<.001) and low-density lipoprotein cholesterol (r=.53, P<.05) in S-SCI but not in PA-SCI individuals. By contrast, the studied adipocytokines did not correlate with cardiac structure and function in PA-SCI and S-SCI participants. CONCLUSIONS: Lower adiponectin levels and higher leptin-adiponectin ratio are related to adverse vascular and/or metabolic characteristics in individuals with SCI. This relationship, however, appears to be mitigated by regular physical activity.


Asunto(s)
Adipoquinas/metabolismo , Ejercicio Físico/fisiología , Traumatismos de la Médula Espinal/metabolismo , Traumatismos de la Médula Espinal/fisiopatología , Adiponectina/metabolismo , Adulto , Biomarcadores/metabolismo , Estudios Transversales , Ecocardiografía , Ensayo de Inmunoadsorción Enzimática , Pruebas de Función Cardíaca , Humanos , Leptina/metabolismo , Masculino , Plasminógeno/metabolismo , Ultrasonografía
15.
Arch Phys Med Rehabil ; 97(6): 1034-7, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-26625710

RESUMEN

OBJECTIVE: To determine whether regular performance of adapted sports is associated with long-term changes in carotid atherosclerosis in subjects with spinal cord injury (SCI). DESIGN: Prospective observational study. SETTING: Academic medical center. PARTICIPANTS: Men with chronic (>1y) SCI and no preserved motor function below the injury level were evaluated in 2007 and 2012 (N=17). Nine subjects did not perform physical activity between the studied time points (control group), whereas 8 subjects entered competitive upper-body sports programs (rugby: n=5, basketball: n=1, jiu-jitsu: n=1, and tennis: n=1) after baseline and were regularly training at the time of the second evaluation (sports group). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Clinical, laboratory, hemodynamic, and carotid ultrasonography analysis. RESULTS: The studied groups showed no differences in all studied variables at baseline. After 5 years of follow-up, the control group showed increases in heart rate (87.0±3.1 vs 74.7±3.8 beats per minute; P=.004), but the participants had no significant changes in carotid intima-media thickness (IMT) (.65±.05 vs .67±.03mm; P=.73) or IMT/diameter (.118±.007 vs .136±.013; P=.24). In contrast, the sports group showed long-term decreases in carotid IMT (.56±.05 vs .74±.05mm; P=.001) and IMT/diameter (.097±.006 vs .141±.009; P<.001), but the participants did not show any variation in the other studied variables at follow-up. CONCLUSIONS: Regular upper-body sports activities are associated with long-term reductions in carotid atherosclerosis in subjects with SCI and might be a potential prevention strategy aiming to reduce cardiovascular risk in this population.


Asunto(s)
Enfermedades de las Arterias Carótidas/fisiopatología , Ejercicio Físico/fisiología , Traumatismos de la Médula Espinal/rehabilitación , Deportes/fisiología , Centros Médicos Académicos , Grosor Intima-Media Carotídeo , Frecuencia Cardíaca , Humanos , Masculino , Estudios Prospectivos , Factores de Riesgo
19.
Aging Clin Exp Res ; 26(1): 19-23, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23959959

RESUMEN

AIM OF THE STUDY: In contrast to the general population, individuals with primarily persistent elevation of inflammatory activity display a significant association between inflammatory biomarkers and atherosclerotic burden. In older individuals, immunosenescence upregulates the innate response and, by this way, may hypothetically favor the presence of this association. The aim of this study was to evaluate this hypothesis in healthy octogenarians. METHODS: Participants (n = 208) aged 80 years or older, asymptomatic and without medical and laboratory evidence of chronic diseases or use of anti-inflammatory treatments were included in the study. Lipid profile and plasma C-reactive protein (CRP) were measured at baseline and cardiac computed tomography was performed within 1-week interval for measuring coronary calcium score (CCS). RESULTS: The median plasma CRP was 1.9 mg/L (1.0­3.4) and 33 % of the participants had elevated CRP defined as C3 mg/L. Among those with high CRP, there was an increased frequency of high CCS (C100) as compared with their counterparts (71 vs 50 %, p = 0.001). The association between CRP and CCS persisted even after adjustment for age, sex, cardiovascular risk factors and statin therapy. The area under the receiver-operating curve for CRP was 0.606 using CCS C100 as a binary outcome. The sensitivities for CCS C100 were 40 and 74 % for the cutoff points of CRP C3 or 1 mg/L, respectively. CONCLUSION: The present study was able to confirm that in very elderly individuals, systemic inflammatory activity is independently associated with coronary atherosclerosis burden.


Asunto(s)
Proteína C-Reactiva/metabolismo , Enfermedad de la Arteria Coronaria/metabolismo , Factores de Edad , Anciano de 80 o más Años , Biomarcadores/sangre , Biomarcadores/metabolismo , Calcio/metabolismo , Enfermedad de la Arteria Coronaria/sangre , Estudios Transversales , Femenino , Humanos , Inflamación/sangre , Inflamación/complicaciones , Inflamación/metabolismo , Lípidos/sangre , Masculino , Factores de Riesgo , Tomografía Computarizada por Rayos X/métodos
20.
Artículo en Inglés | MEDLINE | ID: mdl-39018386

RESUMEN

Diastolic dysfunction refers to impaired relaxation or filling of the ventricles during the diastolic phase of the cardiac cycle. Left ventricular diastolic dysfunction (LVDD) is common in hypertensive individuals and is associated with increased morbidity and mortality. LVDD serves as a critical precursor to heart failure (HF), particularly heart failure with preserved ejection fraction (HFpEF). The pathophysiology of LVDD in hypertension is complex, involving alterations in cardiac structure and function, neurohormonal activation, and vascular stiffness. While the diagnosis of LVDD relies primarily on echocardiography, management remains challenging due to a lack of specific treatment guidelines for LVDD. This review offers an overview of the pathophysiological mechanisms underlying LVDD in hypertension, diagnostic methods, clinical manifestations, strategies for managing LVDD, and prospects for future research.

SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA