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1.
Neuroimage ; 299: 120816, 2024 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-39209071

RESUMO

Accurate interpretation of in vivo wide-field fluorescent imaging (WFFI) data requires precise separation of raw fluorescence signals into neural and hemodynamic components. The classical Beer-Lambert law-based approach, which uses concurrent 530-nm illumination to estimate relative changes in cerebral blood volume (CBV), fails to account for the scattering and reflection of 530-nm photons from non-neuronal components leading to biased estimates of CBV changes and subsequent misrepresentation of neural activity. This study introduces a novel linear regression approach designed to overcome this limitation. This correction provides a more reliable representation of CBV changes and neural activity in fluorescence data. Our method is validated across multiple datasets, demonstrating its superiority over the classical approach.


Assuntos
Hemodinâmica , Animais , Hemodinâmica/fisiologia , Modelos Lineares , Imagem Óptica/métodos , Encéfalo/diagnóstico por imagem , Encéfalo/irrigação sanguínea , Circulação Cerebrovascular/fisiologia , Processamento de Imagem Assistida por Computador/métodos , Masculino , Humanos , Volume Sanguíneo Cerebral/fisiologia
2.
Circ Res ; 128(10): 1576-1593, 2021 05 14.
Artigo em Inglês | MEDLINE | ID: mdl-33983833

RESUMO

Oncology has seen growing use of newly developed targeted therapies. Although this has resulted in dramatic improvements in progression-free and overall survival, challenges in the management of toxicities related to longer-term treatment of these therapies have also become evident. Although a targeted approach often exploits the differences between cancer cells and noncancer cells, overlap in signaling pathways necessary for the maintenance of function and survival in multiple cell types has resulted in systemic toxicities. In particular, cardiovascular toxicities are of important concern. In this review, we highlight several targeted therapies commonly used across a variety of cancer types, including HER2 (human epidermal growth factor receptor 2)+ targeted therapies, tyrosine kinase inhibitors, immune checkpoint inhibitors, proteasome inhibitors, androgen deprivation therapies, and MEK (mitogen-activated protein kinase kinase)/BRAF (v-raf murine sarcoma viral oncogene homolog B) inhibitors. We present the oncological indications, heart failure incidence, hypothesized mechanisms of cardiotoxicity, and potential mechanistic rationale for specific cardioprotective strategies.


Assuntos
Insuficiência Cardíaca/induzido quimicamente , Terapia de Alvo Molecular/efeitos adversos , Neoplasias/tratamento farmacológico , Antagonistas de Androgênios/efeitos adversos , Antraciclinas/efeitos adversos , Antineoplásicos Imunológicos/efeitos adversos , Cardiotônicos/uso terapêutico , Cardiotoxicidade/etiologia , Cardiotoxicidade/prevenção & controle , Insuficiência Cardíaca/epidemiologia , Insuficiência Cardíaca/prevenção & controle , Humanos , Imunoterapia/efeitos adversos , Incidência , Inibidores de Proteassoma/efeitos adversos , Inibidores de Proteínas Quinases/efeitos adversos
3.
Am Heart J ; 232: 137-145, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33212046

RESUMO

BACKGROUND: Timely recognition of cardiac amyloidosis is clinically important, but the diagnosis is frequently delayed. OBJECTIVES: We sought to identify a multi-modality approach with the highest diagnostic accuracy in patients evaluated by cardiac biopsy, the diagnostic gold standard. METHODS: Consecutive patients (N = 242) who underwent cardiac biopsy for suspected amyloidosis within an 18-year period were retrospectively identified. Cardiac biomarker, ECG, and echocardiography results were examined for correlation with biopsy-proven disease. A prediction model for cardiac amyloidosis was derived using multivariable logistic regression. RESULTS: The overall cohort was characterized by elevated BNP (median 727 ng/mL), increased left ventricular wall thickness (IWT; median 1.7 cm), and reduced voltage-to-mass ratio (median 0.06 mm/[g/m2]). One hundred and thirteen patients (46%) had either light chain (n = 53) or transthyretin (n = 60) amyloidosis by cardiac biopsy. A prediction model including age, relative wall thickness, left atrial pressure by E/e', and low limb lead voltage (<0.5 mV) showed good discrimination for cardiac amyloidosis with an optimism-corrected c-index of 0.87 (95% CI 0.83-0.92). The diagnostic accuracy of this model (79% sensitivity, 84% specificity) surpassed that of traditional screening parameters, such as IWT in the absence of left ventricular hypertrophy on ECG (98% sensitivity, 20% specificity) and IWT with low limb lead voltage (49% sensitivity, 91% specificity). CONCLUSION: Among patients with an advanced infiltrative cardiomyopathy phenotype, traditional biomarker, ECG, and echocardiography-based screening tests have limited individual diagnostic utility for cardiac amyloidosis. A prediction algorithm including age, relative wall thickness, E/e', and low limb lead voltage improves the detection of cardiac biopsy-proven disease.


Assuntos
Neuropatias Amiloides Familiares/diagnóstico , Cardiomiopatias/diagnóstico , Amiloidose de Cadeia Leve de Imunoglobulina/diagnóstico , Fatores Etários , Idoso , Neuropatias Amiloides Familiares/sangue , Neuropatias Amiloides Familiares/patologia , Neuropatias Amiloides Familiares/fisiopatologia , Amiloidose/sangue , Amiloidose/diagnóstico , Amiloidose/patologia , Amiloidose/fisiopatologia , Biópsia , Velocidade do Fluxo Sanguíneo , Cardiomiopatias/sangue , Cardiomiopatias/patologia , Regras de Decisão Clínica , Ecocardiografia , Eletrocardiografia , Feminino , Ventrículos do Coração/diagnóstico por imagem , Ventrículos do Coração/patologia , Humanos , Amiloidose de Cadeia Leve de Imunoglobulina/sangue , Amiloidose de Cadeia Leve de Imunoglobulina/patologia , Amiloidose de Cadeia Leve de Imunoglobulina/fisiopatologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Peptídeo Natriurético Encefálico/sangue , Tamanho do Órgão , Fatores Sexuais , Troponina I/sangue
4.
J Urol ; 206(3): 613-622, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-33872049

RESUMO

PURPOSE: The comparative cardiovascular risk profiles of available hormone therapies for the treatment of prostate cancer is not known. MATERIALS AND METHODS: We queried the U.S. Food and Drug Administration Adverse Event Reporting System, a retrospective, pharmacovigilance database, for cardiovascular adverse event reports in men with prostate cancer receiving gonadotropin releasing hormone (GnRH) agonists, GnRH antagonists, androgen receptor antagonists, and/or androgen synthesis inhibitors from January 2000 to April 2020. RESULTS: Cardiovascular adverse events accounted for 6,231 reports (12.6%) on hormone monotherapy and 1,793 reports (26.1%) on combination therapy. Arterial vascular events were reported most commonly, followed by arrhythmias, heart failure, and venous thromboembolism. Compared to GnRH agonists, GnRH antagonists were associated with fewer cardiovascular adverse event reports as monotherapy (adjusted reporting odds ratio [ROR]=0.70 [95% CI 0.59-0.84], p <0.001) and as combination therapy (ROR=0.47 [0.34-0.67], p <0.0001), driven by reductions in arterial vascular events. Second generation androgen receptor antagonists and abiraterone were associated with more reports of hypertension requiring hospitalization (ROR=1.21 [1.03-1.41], p=0.02 and ROR=1.19 [1.01-1.40], p=0.03, respectively), and more heart failure events when used in combination with GnRH antagonists (ROR=2.79 [1.30-6.01], p=0.009 and ROR=2.57 [1.12-5.86], p=0.03). CONCLUSIONS: In this retrospective analysis of a pharmacovigilance database, arterial vascular events were the most commonly reported cardiovascular adverse events in men on hormone therapy for prostate cancer. GnRH antagonists were associated with fewer reports of overall cardiovascular events and arterial vascular events than GnRH agonists. Additional study is needed to identify optimal strategies to reduce cardiovascular morbidity among men with prostate cancer receiving hormone therapy.


Assuntos
Antineoplásicos Hormonais/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Insuficiência Cardíaca/epidemiologia , Hipertensão/epidemiologia , Neoplasias da Próstata/tratamento farmacológico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antagonistas de Androgênios/efeitos adversos , Androstenos/efeitos adversos , Estudos Transversais , Bases de Dados Factuais/estatística & dados numéricos , Hormônio Liberador de Gonadotropina/agonistas , Hormônio Liberador de Gonadotropina/antagonistas & inibidores , Insuficiência Cardíaca/induzido quimicamente , Humanos , Hipertensão/induzido quimicamente , Masculino , Pessoa de Meia-Idade , Farmacovigilância , Estudos Retrospectivos , Estados Unidos/epidemiologia , United States Food and Drug Administration/estatística & dados numéricos , Adulto Jovem
5.
BMC Med Inform Decis Mak ; 20(1): 88, 2020 05 13.
Artigo em Inglês | MEDLINE | ID: mdl-32404163

RESUMO

BACKGROUND: Coronary heart disease (CHD) is a leading cause of morbidity and mortality for breast cancer survivors, yet the joint effect of adverse cardiovascular health (CVH) and cardiotoxic cancer treatments on post-treatment CHD and death has not been quantified. METHODS: We conducted statistical and machine learning approaches to evaluate 10-year risk of these outcomes among 1934 women diagnosed with breast cancer during 2006 and 2007. Overall CVH scores were classified as poor, intermediate, or ideal for 5 factors, smoking, body mass index, blood pressure, glucose/hemoglobin A1c, and cholesterol from clinical data within 5 years prior to the breast cancer diagnosis. The receipt of potentially cardiotoxic breast cancer treatments was indicated if the patient received anthracyclines or hormone therapies. We modeled the outcomes of post-cancer diagnosis CHD and death, respectively. RESULTS: Results of these approaches indicated that the joint effect of poor CVH and receipt of cardiotoxic treatments on CHD (75.9%) and death (39.5%) was significantly higher than their independent effects [poor CVH (55.9%) and cardiotoxic treatments (43.6%) for CHD, and poor CVH (29.4%) and cardiotoxic treatments (35.8%) for death]. CONCLUSIONS: Better CVH appears to be protective against the development of CHD even among women who had received potentially cardiotoxic treatments. This study determined the extent to which attainment of ideal CVH is important not only for CHD and mortality outcomes among women diagnosed with breast cancer.


Assuntos
Neoplasias da Mama , Doença das Coronárias , Adulto , Idoso , Idoso de 80 Anos ou mais , Pressão Sanguínea , Índice de Massa Corporal , Neoplasias da Mama/complicações , Neoplasias da Mama/diagnóstico , Doença das Coronárias/complicações , Feminino , Nível de Saúde , Humanos , Pessoa de Meia-Idade , Fatores de Risco , Adulto Jovem
7.
Bioorg Med Chem ; 23(17): 5293-302, 2015 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-26277758

RESUMO

A novel series of N-(4-aryl-5-aryloxy-thiazol-2-yl)-amides as RORγt inverse agonists was discovered. Binding mode analysis of a RORγt partial agonist (2c) revealed by co-crystal structure in RORγt LBD suggests that the inverse agonists do not directly interfere with the interaction between H12 and the RORγt LBD. Detailed SAR exploration led to identification of potent RORγt inverse agonists such as 3m with a pIC50 of 8.0. Selected compounds in the series showed reasonable activity in Th17 cell differentiation assay as well as low intrinsic clearance in mouse liver microsomes.


Assuntos
Amidas/química , Amidas/farmacologia , Agonismo Inverso de Drogas , Membro 3 do Grupo F da Subfamília 1 de Receptores Nucleares/agonistas , Células Th17/efeitos dos fármacos , Tiazóis/química , Tiazóis/farmacologia , Animais , Diferenciação Celular/efeitos dos fármacos , Células Cultivadas , Humanos , Camundongos , Simulação de Acoplamento Molecular , Membro 3 do Grupo F da Subfamília 1 de Receptores Nucleares/metabolismo , Células Th17/citologia
8.
Curr Heart Fail Rep ; 11(4): 366-73, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25079445

RESUMO

As the population of breast cancer survivors grows, it has become evident that chemotherapy has significant cardiotoxic side effects. Echocardiography is a noninvasive, cost-effective, and widely available imaging tool that is well positioned to serve as a primary modality for monitoring chemotherapy-induced cardiotoxicity. Although left ventricular ejection fraction is a standard measurement by which to monitor chemotherapy-induced cardiotoxicity, its predictive value in identifying subsequent cardiotoxicity is limited. More sophisticated echocardiography modalities may offer improved sensitivity and specificity for detecting chemotherapy-induced cardiotoxicity. These include tissue Doppler imaging measures, newer techniques based upon two- and three-dimensional strain and torsion analysis, and three-dimensional measures of cardiac size. While these modalities are not all currently part of clinical practice, a body of data supporting their use is steadily building. More research remains to be performed, and noninvasively detecting cancer therapy-induced cardiac dysfunction at the earliest stages is of increasing interest.


Assuntos
Antraciclinas/efeitos adversos , Anticorpos Monoclonais Humanizados/efeitos adversos , Antineoplásicos/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , Cardiotoxicidade/diagnóstico por imagem , Cardiotoxicidade/etiologia , Ecocardiografia/métodos , Feminino , Humanos , Valor Preditivo dos Testes , Trastuzumab
9.
Clin Genitourin Cancer ; 22(2): 586-592, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-38369389

RESUMO

BACKGROUND: Cardiovascular (CV) disease is common among men with prostate cancer and the leading cause of death in this population. There is a need for CV risk assessment tools that can be easily implemented in the prostate cancer treatment setting. METHODS: Consecutive patients who underwent positron emission tomography/computed tomography (PET/CT) for recurrent prostate cancer at a single institution from 2012 to 2017 were identified retrospectively. Clinical data and coronary calcification on nongated CT imaging were obtained. The primary outcome was major adverse CV event (MACE; myocardial infarction, coronary or peripheral revascularization, stroke, heart failure hospitalization, or all-cause mortality) occurring within 5 years of PET/CT. RESULTS: Among 354 patients included in the study, there were 98 MACE events that occurred in 74 patients (21%). All-cause mortality was the most common MACE event (35%), followed by coronary revascularization/myocardial infarction (26%) and stroke (19%). Coronary calcification was predictive of MACE (HR = 1.9, 95% CI: 1.1-3.4, P = .03) using adjusted Kaplan-Meier analysis. As a comparator, the Framingham risk score was calculated for 198 patients (56%) with complete clinical and laboratory data available. In this subgroup, high baseline Framingham risk (corresponding to 10-year risk of CV disease > 20%) was not predictive of MACE. CONCLUSIONS: MACE was common (21%) in men with recurrent prostate cancer undergoing PET/CT over 5 years of follow-up. Incidental coronary calcification on PET/CT was associated with increased risk of MACE and may have utility as a CV risk predictor that is feasible to implement among all prostate cancer providers.


Assuntos
Doenças Cardiovasculares , Infarto do Miocárdio , Neoplasias da Próstata , Acidente Vascular Cerebral , Masculino , Humanos , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Doenças Cardiovasculares/diagnóstico por imagem , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/etiologia , Fatores de Risco , Estudos Retrospectivos , Recidiva Local de Neoplasia/complicações , Medição de Risco , Infarto do Miocárdio/etiologia , Infarto do Miocárdio/terapia , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/epidemiologia , Fatores de Risco de Doenças Cardíacas , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/complicações , Prognóstico , Valor Preditivo dos Testes
10.
Nat Commun ; 15(1): 4896, 2024 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-38851790

RESUMO

Biological computing is a promising field with potential applications in biosafety, environmental monitoring, and personalized medicine. Here we present work on the design of bacterial computers using spatial patterning to process information in the form of diffusible morphogen-like signals. We demonstrate, mathematically and experimentally, that single, modular, colonies can perform simple digital logic, and that complex functions can be built by combining multiple colonies, removing the need for further genetic engineering. We extend our experimental system to incorporate sender colonies as morphogen sources, demonstrating how one might integrate different biochemical inputs. Our approach will open up ways to perform biological computation, with applications in bioengineering, biomaterials and biosensing. Ultimately, these computational bacterial communities will help us explore information processing in natural biological systems.


Assuntos
Escherichia coli , Escherichia coli/metabolismo , Escherichia coli/genética , Bactérias/metabolismo , Bactérias/genética , Engenharia Genética/métodos , Difusão , Modelos Biológicos , Bioengenharia/métodos
11.
Cardiooncology ; 9(1): 14, 2023 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-36915213

RESUMO

BACKGROUND: Immune checkpoint inhibitor (ICI) myocarditis is associated with high morbidity and mortality. While endomyocardial biopsy (EMB) is considered a gold standard for diagnosis, the sensitivity of EMB is not well defined. Additionally, the pathological features that correlate with the clinical diagnosis of ICI-associated myocarditis remain incompletely understood. METHODS: We retrospectively identified and reviewed the clinicopathological features of 26 patients with suspected ICI-associated myocarditis based on institutional major and minor criteria. Seventeen of these patients underwent EMB, and the histopathological features were assessed by routine hematoxylin and eosin (H&E) staining and immunohistochemical (IHC) staining for CD68, a macrophage marker. RESULTS: Only 2/17 EMBs obtained from patients with suspected ICI myocarditis satisfied the Dallas criteria. Supplemental IHC staining and quantification of CD68+ macrophages identified an additional 7 patients with pathological features of myocardial inflammation (> 50 CD68+ cells/HPF). Macrophage abundance positively correlated with serum Troponin I (P = 0.010) and NT-proBNP (N-terminal pro-brain natriuretic peptide, P = 0.047) concentration. Inclusion of CD68 IHC could have potentially changed the certainty of the diagnosis of ICI-associated myocarditis to definite in 6/17 cases. CONCLUSIONS: While the Dallas criteria can identify a subset of ICI-associated myocarditis patients, quantification of macrophage abundance may expand the diagnostic role of EMB. Failure to meet the traditional Dallas Criteria should not exclude the diagnosis of myocarditis.

12.
Curr Probl Cardiol ; 48(6): 101667, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36828040

RESUMO

Tafamidis was associated with a reduction in cardiovascular hospitalizations and all-cause mortality in patients with transthyretin amyloid cardiomyopathy (ATTR-CM) in the ATTR-ACT trial. However, real-world data on the efficacy of tafamidis are limited. We conducted a retrospective, observational cohort study using the TriNetX research network. Patients with wild-type TTR amyloidosis and heart failure (HF) were divided into 2 groups based on treatment with tafamidis. Propensity score matching (PSM) was performed, and rates of heart failure exacerbations (HFE) and all-cause mortality at 12 months were compared. After PSM, 421 patients were in each group (tafamidis vs nontafamidis). During the 12-month follow-up period, patients treated with tafamidis experienced significantly less HFE and all-cause mortality. A higher probability of event-free survival for HFE and all-cause mortality was noted with tafamidis. This real-world analysis supports that tafamidis use is associated with reduced HFE and all-cause mortality in patients with wild-type TTR amyloidosis and HF. Longer-term follow-up is needed to better understand the utility of tafamidis, given the increasing recognition of ATTR-CM and the high cost of tafamidis.


Assuntos
Neuropatias Amiloides Familiares , Cardiomiopatias , Insuficiência Cardíaca , Humanos , Estudos Retrospectivos , Pré-Albumina , Neuropatias Amiloides Familiares/complicações , Neuropatias Amiloides Familiares/tratamento farmacológico , Insuficiência Cardíaca/etiologia , Cardiomiopatias/tratamento farmacológico , Cardiomiopatias/complicações , Estudos Observacionais como Assunto
13.
Am J Med ; 135 Suppl 1: S44-S48, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35077703

RESUMO

Transthyretin amyloidosis (ATTR) is an under-recognized cause of cardiomyopathy and neuropathy. Until recently, there were limited therapeutic options for ATTR. However, new therapeutics, including tafamidis, patisiran, and inotersen, increase both quality and length of life in patients with ATTR. This review details the chronological development of ATTR therapies through landmark clinical trials. In addition, we discuss emerging ATTR therapies including improvements in drug delivery methods, antibodies to break down deposited amyloid fibrils, and gene editing. ATTR is a prime example of how an understanding of the pathophysiological basis of disease can lead to effective therapies. The future of ATTR therapy is bright, with every reason to believe outcomes will continue to improve.


Assuntos
Neuropatias Amiloides Familiares , Cardiomiopatias , Neuropatias Amiloides Familiares/tratamento farmacológico , Neuropatias Amiloides Familiares/genética , Cardiomiopatias/tratamento farmacológico , Humanos , Pré-Albumina/genética
14.
J Clin Med ; 11(17)2022 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-36079097

RESUMO

Gender differences exist throughout the medical field and significant progress has been made in understanding the effects of gender in many aspects of healthcare. The field of cardio-oncology is diverse and dynamic with new oncologic and cardiovascular therapies approved each year; however, there is limited knowledge regarding the effects of gender within cardio-oncology, particularly the impact of gender on cardiotoxicities. The relationship between gender and cardio-oncology is unique in that gender likely affects not only the biological underpinnings of cancer susceptibility, but also the response to both oncologic and cardiovascular therapies. Furthermore, gender has significant socioeconomic and psychosocial implications which may impact cancer and cardiovascular risk factor profiles, cancer susceptibility, and the delivery of healthcare. In this review, we summarize the effects of gender on susceptibility of cancer, response to cardiovascular and cancer therapies, delivery of healthcare, and highlight the need for further gender specific studies regarding the cardiovascular effects of current and future oncological treatments.

15.
Front Cardiovasc Med ; 9: 932347, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36211558

RESUMO

Chimeric antigen receptor T-cell (CAR T) therapy is a revolutionary personalized therapy that has significantly impacted the treatment of patients with hematologic malignancies refractory to other therapies. Cytokine release syndrome (CRS) is a major side effect of CAR T therapy that can occur in 70-90% of patients, with roughly 40% of patients at grade 2 or higher. CRS can cause an intense inflammatory state leading to cardiovascular complications, including troponin elevation, arrhythmias, hemodynamic instability, and depressed left ventricular systolic function. There are currently no standardized guidelines for the management of cardiovascular complications due to CAR T therapy, but systematic practice patterns are emerging. In this review, we contextualize the history and indications of CAR T cell therapy, side effects related to this treatment, strategies to optimize the cardiovascular health prior to CAR T and the management of cardiovascular complications related to CRS. We analyze the existing data and discuss potential future approaches.

16.
ESC Heart Fail ; 9(1): 385-397, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34877800

RESUMO

AIMS: The accuracy of an apical-sparing strain pattern on transthoracic echocardiography (TTE) for predicting cardiac amyloidosis (CA) has varied in prior studies depending on the underlying cohort. We sought to evaluate the performance of apical sparing and other TTE strain findings to screen for CA in an unselected population and determine the frequency that patients with echocardiographic concern for CA undergo evaluation for amyloidosis in clinical practice. METHODS AND RESULTS: As strain is routinely performed at our institution on all clinical TTEs, we identified all TTEs performed from 2016 through 2019 with reported concern for CA or apical sparing. We determined the performance characteristics for echocardiographic strain findings in discriminating CA including apical sparing, the ejection fraction to global longitudinal strain ratio (EF/GLS), and the septal apical-septal basal ratio (SA/SB); other clinical predictors of confirmed CA; and predictors of patients who underwent complete evaluation for CA. CA was confirmed by endomyocardial biopsy or diagnostic cardiac imaging. A total of 547 TTEs, representing 451 patients, reported concern for CA and had adequate strain for analysis. A total of 111 patients underwent complete evaluation for amyloidosis with 100 patients undergoing complete cardiac evaluation for CA. In those 100 patients, multivariable predictors of confirmed CA were age [odds ratio (OR) 3.37 per 5 years], a visual apical-sparing pattern (OR 10.85), and left ventricular ejection fraction (LVEF)/GLS > 4.1 (OR 35.37). CA was less likely in those with coronary artery disease (OR 0.04), hypertension (OR 0.18), and increased systolic blood pressure (OR 0.60 per 5 mm Hg increase). SA/SB [area under the curve (AUC) 0.72, 95% confidence interval (CI) 0.60-0.84] and LVEF/GLS (AUC 0.72, 95% CI 0.60-0.84) both had improved discrimination for CA compared with the apical-sparing ratio (AUC 0.66, 95% CI 0.54-0.79). Many patients with suggestive TTE findings did not receive an evaluation for amyloidosis. Complete evaluation was more likely with Caucasian race (OR 2.1), increased septal thickness (OR 1.4), increased body mass index (OR 1.2), and if the report specifically stated 'amyloid' (OR 1.9). Evaluations were less likely in patients with comorbidities. While hypertension reduced the likelihood of evaluating for CA, 34% of patients with CA had hypertension (>130/80 mm Hg) at time of diagnosis. CONCLUSIONS: In a broad population of patients undergoing TTE, apical sparing on strain imaging increased the likelihood of CA diagnosis but with modest sensitivity and specificity. GLS/EF ratio may be a more reliable tool to screen for CA. The low rate of complete evaluation in patients with concerning TTE findings indicates a strong need for practice improvement and enhanced disease awareness.


Assuntos
Amiloidose , Função Ventricular Esquerda , Amiloidose/diagnóstico , Amiloidose/epidemiologia , Pré-Escolar , Ecocardiografia/métodos , Humanos , Sensibilidade e Especificidade , Volume Sistólico
17.
Int J Cardiol ; 322: 177-182, 2021 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-32800916

RESUMO

BACKGROUND: Although the incidence of immune checkpoint inhibitor (ICI)-related cardiovascular (CV) toxicity is low, the overall burden of CV events after ICI is unknown. Risk factors for CV events after ICI have yet to be identified. OBJECTIVES: We sought to evaluate the association between vascular calcification on routine baseline computed tomography (CT) imaging and CV events following ICI. METHOD: This was a single-center, retrospective cohort study of 76 patients referred to Cardio-Oncology with prior ICI treatment. Coronary and aortic calcification on non-gated chest and abdominal CT imaging were qualitatively assessed. The association of baseline clinical parameters and vascular calcification with symptomatic heart failure (HF), acute coronary syndrome, myocarditis, symptomatic arrhythmia, or pericardial effusion after ICI was evaluated. RESULTS: Over 11 months of follow-up, there were 80 CV events that occurred in 49 patients. Worse coronary and aortic calcification on pre-treatment CT imaging was seen in patients with a CV event (p = .018 and p = .014, respectively). There were no differences in traditional CV risk factors between those with and without a CV event. Eighteen patients (37%) were restarted on ICI therapy after a non- myocarditis or symptomatic systolic HF CV event without recurrent events or mortality over 13 months of follow-up. CONCLUSIONS: Symptomatic HF was the most common CV event seen after ICI therapy. Worse coronary and aortic calcification on baseline CT imaging was associated with CV events following ICI. With careful clinical evaluation, selected patients may be re-treated with ICI following a non- myocarditis or symptomatic systolic HF CV event.


Assuntos
Miocardite , Neoplasias , Calcificação Vascular , Humanos , Inibidores de Checkpoint Imunológico , Miocardite/tratamento farmacológico , Neoplasias/tratamento farmacológico , Estudos Retrospectivos , Fatores de Risco , Calcificação Vascular/induzido quimicamente , Calcificação Vascular/diagnóstico por imagem , Calcificação Vascular/epidemiologia
18.
JACC Cardiovasc Imaging ; 14(8): 1508-1519, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33744146

RESUMO

OBJECTIVES: The prognostic value of echocardiographic atrial and ventricular strain imaging in patients with biopsy-proven cardiac amyloidosis was assessed. BACKGROUND: Although left ventricular global longitudinal strain (GLS) is known to be predictive of outcome, the additive prognostic value of left (LA), right atrial (RA), and right ventricular (RV) strain is unclear. METHODS: One hundred thirty-six patients with cardiac amyloidosis and available follow-up data were studied by endomyocardial biopsy, noncardiac biopsy with supportive cardiac imaging, or autopsy confirmation. One hundred nine patients (80%) had light-chain, 23 (17%) had transthyretin, and 4 (3%) had amyloid A type cardiac amyloidosis. GLS, RV free wall strain, peak longitudinal LA strain, and peak longitudinal RA strain were measured from apical views. Clinical and routine echocardiographic data were compared. All-cause mortality was followed (median 5 years). RESULTS: Strain data were feasible for GLS in 127 (93%), LA strain in 119 (88%), RA strain in 117 (86%), and RV strain in 102 (75%). Strain values from all 4 chambers were significantly associated with survival. Hazard ratio (HR) and 95% confidence interval (CI) for low median strain values were as follows: GLS, HR: 2.3; 95% CI: 1.3 to 3.8 (p < 0.01); LA strain, HR: 7.5; 95% CI: 3.8 to 14.7 (p < 0.001); RA strain, HR: 3.5; 95% CI: 2.0 to 6.2 (p < 0.001); and RV free wall strain, HR: 2.8; 95% CI: 1.5 to 5.1 (p < 0.001). Peak longitudinal LA strain and RV strain remained independently associated with survival in multivariable analysis. Peak LA strain had the strongest association with survival (p < 0.001), and LA strain combined with GLS and RV free wall strain had the highest prognostic value (p < 0.001). CONCLUSIONS: Strain data from all 4 chambers had important prognostic associations with survival in patients with biopsy-confirmed cardiac amyloidosis. Peak longitudinal LA strain was particularly associated with prognosis. Atrial and ventricular strain have promise for clinical utility.


Assuntos
Amiloidose , Ecocardiografia , Amiloidose/diagnóstico por imagem , Átrios do Coração/diagnóstico por imagem , Humanos , Valor Preditivo dos Testes , Prognóstico , Estudos Prospectivos
19.
PLoS One ; 16(3): e0248317, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33735249

RESUMO

BACKGROUND: Patients with heart failure (HF) with recovered ejection fraction (HFrecEF) are a recently identified cohort that are phenotypically and biologically different from HFrEF and HFpEF patients. Whether there are unique phenotypes among HFrecEF patients is not known. METHODS: We studied all patients at a large medical center, who had an improvement in LVEF from ≤ 35% to ≥ 50% (LVrecEF) between January 1, 2005 and December 31, 2013. We identified a set of 11 clinical variables and then performed unsupervised clustering analyses to identify unique clinical phenotypes among patients with LVrecEF, followed by a Kaplan-Meier analysis to identify differences in survival and the proportion of LVrecEF patients who maintained an LVEF ≥ 50% during the study period. RESULTS: We identified 889 patients with LVrecEF who clustered into 7 unique phenotypes ranging in size from 37 to 420 patients. Kaplan-Meier analysis demonstrated significant differences in mortality across clusters (logrank p<0.0001), with survival ranging from 14% to 87% at 1000 days, as well as significant differences in the proportion of LVrecEF patients who maintained an LVEF ≥ 50%. CONCLUSION: There is significant clinical heterogeneity among patients with LVrecEF. Clinical outcomes are distinct across phenotype clusters as defined by clinical cardiac characteristics and co-morbidities. Clustering algorithms may identify patients who are at high risk for recurrent HF, and thus be useful for guiding treatment strategies for patients with LVrecEF.


Assuntos
Insuficiência Cardíaca/terapia , Volume Sistólico/fisiologia , Função Ventricular Esquerda/fisiologia , Idoso , Idoso de 80 Anos ou mais , Análise por Conglomerados , Feminino , Insuficiência Cardíaca/mortalidade , Insuficiência Cardíaca/fisiopatologia , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos , Estudos Retrospectivos , Medição de Risco/métodos , Medição de Risco/estatística & dados numéricos , Resultado do Tratamento
20.
Int J Cardiovasc Imaging ; 37(10): 3003-3017, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33982196

RESUMO

The purpose of this review is to provide an overview of the essential role that cardiovascular magnetic resonance (CMR) has in the field of cardio-oncology. Recent findings: CMR has been increasingly used for early identification of cancer therapy related cardiac dysfunction (CTRCD) due to its precision in detecting subtle changes in cardiac function and for myocardial tissue characterization. Summary: CMR is able to identify subclinical CTRCD in patients receiving potentially cardiotoxic chemotherapy and guide initiation of cardio protective therapy. Multiparametric analysis with myocardial strain, tissue characterization play a critical role in understanding important clinical questions in cardio-oncology.


Assuntos
Antineoplásicos , Cardiopatias , Neoplasias , Detecção Precoce de Câncer , Cardiopatias/induzido quimicamente , Cardiopatias/diagnóstico por imagem , Humanos , Espectroscopia de Ressonância Magnética , Neoplasias/complicações , Neoplasias/tratamento farmacológico , Valor Preditivo dos Testes
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