Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 29
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Ann Hematol ; 102(4): 749-754, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36732419

RESUMEN

Intensive chemotherapy (IC) is commonly used to achieve remission in patients with acute myeloid leukemia (AML). Venetoclax plus azacitidine (VEN-AZA) is FDA-approved to treat patients with AML aged ≥ 75 years or who are ineligible for IC. This retrospective analysis used de-identified electronic health records from the US-based Flatiron Health database from patients diagnosed 11/21/2018 to 10/31/2021 to compare treatment outcomes with VEN-AZA vs. IC. Patients were 1:1 propensity score-matched ([Formula: see text]). Assessments included rates of complete remission (CR) and hematopoietic stem cell transplant (HSCT), overall survival (OS), and relapse-free survival (RFS). CR and HSCT rates were higher with IC than with VEN-AZA (60.9% vs. 44.2% [P = 0.006] and 18.1% vs. 8.0% [P = 0.012], respectively). Median OS was 17.7 months in patients treated with IC and 11.3 months with VEN-AZA without censoring (P = 0.278) and 13.7 vs. 10.6 months, respectively, with censoring at HSCT (P = 0.584). Median RFS was 12.0 months in patients treated with IC vs. 9.5 months with VEN-AZA without censoring (P = 0.431) and 6.4 vs. 7.4 months, respectively, with censoring at HSCT (P = 0.444). No OS or RFS differences observed between the two arms reached statistical significance. Randomized controlled trials comparing the two approaches are warranted, as are novel approaches to reduce relapse rates following CR.


Asunto(s)
Registros Electrónicos de Salud , Leucemia Mieloide Aguda , Humanos , Estados Unidos/epidemiología , Estudios Retrospectivos , Azacitidina/uso terapéutico , Leucemia Mieloide Aguda/terapia , Compuestos Bicíclicos Heterocíclicos con Puentes/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico
2.
Proc Natl Acad Sci U S A ; 117(2): 1119-1128, 2020 01 14.
Artículo en Inglés | MEDLINE | ID: mdl-31888983

RESUMEN

Reprogramming the tumor microenvironment to increase immune-mediated responses is currently of intense interest. Patients with immune-infiltrated "hot" tumors demonstrate higher treatment response rates and improved survival. However, only the minority of tumors are hot, and a limited proportion of patients benefit from immunotherapies. Innovative approaches that make tumors hot can have immediate impact particularly if they repurpose drugs with additional cancer-unrelated benefits. The seasonal influenza vaccine is recommended for all persons over 6 mo without prohibitive contraindications, including most cancer patients. Here, we report that unadjuvanted seasonal influenza vaccination via intratumoral, but not intramuscular, injection converts "cold" tumors to hot, generates systemic CD8+ T cell-mediated antitumor immunity, and sensitizes resistant tumors to checkpoint blockade. Importantly, intratumoral vaccination also provides protection against subsequent active influenza virus lung infection. Surprisingly, a squalene-based adjuvanted vaccine maintains intratumoral regulatory B cells and fails to improve antitumor responses, even while protecting against active influenza virus lung infection. Adjuvant removal, B cell depletion, or IL-10 blockade recovers its antitumor effectiveness. Our findings propose that antipathogen vaccines may be utilized for both infection prevention and repurposing as a cancer immunotherapy.


Asunto(s)
Inmunoterapia/métodos , Vacunas contra la Influenza/administración & dosificación , Vacunas contra la Influenza/inmunología , Vacunas contra la Influenza/uso terapéutico , Inyecciones Intralesiones , Neoplasias/tratamiento farmacológico , Neoplasias/inmunología , Adyuvantes Inmunológicos/administración & dosificación , Animales , Linfocitos B , Factores de Transcripción con Cremalleras de Leucina de Carácter Básico/genética , Linfocitos T CD8-positivos/inmunología , Humanos , Inmunidad Celular , Subtipo H1N1 del Virus de la Influenza A/inmunología , Gripe Humana , Interleucina-10 , Pulmón/patología , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/inmunología , Neoplasias Pulmonares/patología , Ratones , Ratones Endogámicos C57BL , Proteínas Represoras/genética , Estaciones del Año , Piel , Neoplasias Cutáneas/tratamiento farmacológico , Neoplasias Cutáneas/patología , Escualeno/administración & dosificación , Microambiente Tumoral/efectos de los fármacos , Vacunación
3.
Circ Res ; 122(6): e20-e33, 2018 03 16.
Artículo en Inglés | MEDLINE | ID: mdl-29362227

RESUMEN

RATIONALE: The regulator of calcineurin 1 (RCAN1) inhibits CN (calcineurin), a Ca2+-activated protein phosphatase important in cardiac remodeling. In humans, RCAN1 is located on chromosome 21 in proximity to the Down syndrome critical region. The hearts and brains of Rcan1 KO mice are more susceptible to damage from ischemia/reperfusion (I/R); however, the underlying cause is not known. OBJECTIVE: Mitochondria are key mediators of I/R damage. The goal of these studies was to determine the impact of RCAN1 on mitochondrial dynamics and function. METHODS AND RESULTS: Using both neonatal and isolated adult cardiomyocytes, we show that, when RCAN1 is depleted, the mitochondrial network is more fragmented because of increased CN-dependent activation of the fission protein, DRP1 (dynamin-1-like). Mitochondria in RCAN1-depleted cardiomyocytes have reduced membrane potential, O2 consumption, and generation of reactive oxygen species, as well as a reduced capacity for mitochondrial Ca2+ uptake. RCAN1-depleted cardiomyocytes were more sensitive to I/R; however, pharmacological inhibition of CN, DRP1, or CAPN (calpains; Ca2+-activated proteases) restored protection, suggesting that in the absence of RCAN1, CAPN-mediated damage after I/R is greater because of a decrease in the capacity of mitochondria to buffer cytoplasmic Ca2+. Increasing RCAN1 levels by adenoviral infection was sufficient to enhance fusion and confer protection from I/R. To examine the impact of more modest, and biologically relevant, increases in RCAN1, we compared the mitochondrial network in induced pluripotent stem cells derived from individuals with Down syndrome to that of isogenic, disomic controls. Mitochondria were more fused, and O2 consumption was greater in the trisomic induced pluripotent stem cells; however, coupling efficiency and metabolic flexibility were compromised compared with disomic induced pluripotent stem cells. Depletion of RCAN1 from trisomic induced pluripotent stem cells was sufficient to normalize mitochondrial dynamics and function. CONCLUSIONS: RCAN1 helps maintain a more interconnected mitochondrial network, and maintaining appropriate RCAN1 levels is important to human health and disease.


Asunto(s)
Péptidos y Proteínas de Señalización Intracelular/genética , Mitocondrias Cardíacas/metabolismo , Dinámicas Mitocondriales , Proteínas Musculares/genética , Daño por Reperfusión Miocárdica/genética , Animales , Proteínas de Unión al Calcio , Calpaína/genética , Calpaína/metabolismo , Línea Celular , Células Cultivadas , Dinaminas/genética , Dinaminas/metabolismo , Humanos , Masculino , Ratones , Ratones Endogámicos C57BL , Daño por Reperfusión Miocárdica/metabolismo , Oxígeno/metabolismo , Ratas , Ratas Sprague-Dawley
4.
EMBO Rep ; 19(12)2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30389725

RESUMEN

Increasing non-shivering thermogenesis (NST), which expends calories as heat rather than storing them as fat, is championed as an effective way to combat obesity and metabolic disease. Innate mechanisms constraining the capacity for NST present a fundamental limitation to this approach, yet are not well understood. Here, we provide evidence that Regulator of Calcineurin 1 (RCAN1), a feedback inhibitor of the calcium-activated protein phosphatase calcineurin (CN), acts to suppress two distinctly different mechanisms of non-shivering thermogenesis (NST): one involving the activation of UCP1 expression in white adipose tissue, the other mediated by sarcolipin (SLN) in skeletal muscle. UCP1 generates heat at the expense of reducing ATP production, whereas SLN increases ATP consumption to generate heat. Gene expression profiles demonstrate a high correlation between Rcan1 expression and metabolic syndrome. On an evolutionary timescale, in the context of limited food resources, systemic suppression of prolonged NST by RCAN1 might have been beneficial; however, in the face of caloric abundance, RCAN1-mediated suppression of these adaptive avenues of energy expenditure may now contribute to the growing epidemic of obesity.


Asunto(s)
Péptidos y Proteínas de Señalización Intracelular/metabolismo , Metabolismo , Proteínas Musculares/metabolismo , Termogénesis , Células 3T3-L1 , Adipocitos/citología , Adipocitos/efectos de los fármacos , Adipocitos/metabolismo , Tejido Adiposo/metabolismo , Tejido Adiposo Beige/efectos de los fármacos , Tejido Adiposo Beige/metabolismo , Tejido Adiposo Blanco/efectos de los fármacos , Tejido Adiposo Blanco/metabolismo , Adrenérgicos/farmacología , Animales , Calcineurina/metabolismo , Proteínas de Unión al Calcio , Diferenciación Celular/efectos de los fármacos , Frío , Femenino , Resistencia a la Insulina , Péptidos y Proteínas de Señalización Intracelular/deficiencia , Metabolismo de los Lípidos/efectos de los fármacos , Hígado/metabolismo , Masculino , Síndrome Metabólico/metabolismo , Metabolismo/efectos de los fármacos , Ratones , Ratones Noqueados , Proteínas Musculares/deficiencia , Proteínas Musculares/genética , Músculo Esquelético/metabolismo , Músculo Estriado/metabolismo , Obesidad/metabolismo , Obesidad/patología , Coactivador 1-alfa del Receptor Activado por Proliferadores de Peroxisomas gamma/metabolismo , Regiones Promotoras Genéticas/genética , Proteolípidos/genética , Proteolípidos/metabolismo , ARN Mensajero/genética , ARN Mensajero/metabolismo , Termogénesis/efectos de los fármacos , Proteína Desacopladora 1/metabolismo
5.
Palliat Support Care ; 17(1): 87-94, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-29880065

RESUMEN

OBJECTIVE: Emotional awareness is the ability to recognize, describe, and attend to emotions. A known correlate is emotional processing, the ability to orient to and use inner experiences for information. The goal was to examine emotional awareness during therapy among gynecologic cancer patients, identify baseline predictors, and explore the relationship between in-session emotional awareness and processing. METHOD: Psychotherapy and baseline data from a randomized controlled trial comparing a supportive counseling (SC) intervention and a cognitive-behavioral coping and communication (CCI) intervention were used. The sample was patients with gynecologic cancers randomized to either therapy (N = 246). Emotion episode transcripts from the first, middle, and sixth of seven in-person sessions were coded for emotional awareness using the Program for Open-Ended Scoring and emotional processing using the Experiencing Scale. Descriptive and regression analyses were conducted.ResultParticipants had moderate in-session emotional awareness. SC participants exhibited higher levels of awareness in the first (p < 0.001) and sixth (p = 0.002) sessions than CCI participants. Awareness was positively correlated with emotional processing in the first and sixth SC sessions (r = 0.25 and 0.24, respectively) and all CCI sessions (r = 0.29-0.31). Baseline negative emotion expression was associated with awareness during the sixth SC session. Baseline cancer-specific distress was associated with awareness during the sixth CCI session.Significance of resultsSC may facilitate emotional awareness. Greater emotional awareness in therapy may facilitate emotional processing, which is an important component of most psychotherapies. Patients who are psychologically distressed may exhibit more awareness than others. Similarly, greater emotional awareness may signal greater patient distress.


Asunto(s)
Concienciación , Inteligencia Emocional , Neoplasias de los Genitales Femeninos/psicología , Psicoterapia/normas , Adulto , Consejo/métodos , Consejo/normas , Femenino , Humanos , Persona de Mediana Edad , Psicometría/instrumentación , Psicometría/métodos , Psicoterapia/métodos , Encuestas y Cuestionarios , Resultado del Tratamiento
7.
J Pediatr Psychol ; 43(9): 1059-1067, 2018 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-29800306

RESUMEN

Objective: To examine the psychometric properties of the Patient-Reported Outcomes Measurement Information System (PROMIS®) peer relationships short form (PR-SF), including association with peer-reported friendships, likeability, and social reputation. Method: 203 children (Mage = 10.12 years, SD = 2.37, range = 6-14) in Grades 1-8 completed the 8-item PR-SF and friendship nominations, like ratings, and social reputation measures about their peers during 2 classroom visits approximately 4 months apart, as part of a larger study. A confirmatory factor analysis, followed by an exploratory factor analysis, was conducted to examine the factor structure of the PR-SF. Spearman correlations between the PR-SF and peer-reported outcomes evaluated construct validity. Results: For the PR-SF, a 2-factor solution demonstrated better fit than a 1-factor solution. The 2 factors appear to assess friendship quality (3 items) and peer acceptance (5 items). Reliability was marginal for the friendship quality factor (.66) but adequate for the acceptance factor (.85); stability was .34 for the PR-SF over 4 months. The PR-SF (8 items) and acceptance factor (5 items) both had modest but significant correlations with measures of friendship (rs = .25-.27), likeability (rs = .21-.22), and social reputation (rs = .29-.44). Conclusions: The PR-SF appears to be measuring two distinct aspects of social functioning. The 5-item peer acceptance scale is modestly associated with peer-reported friendship, likeability, and social reputation. Although not a replacement for peer-reported outcomes, the PR-SF is a promising patient-reported outcome for peer relationships in youth.


Asunto(s)
Supervivientes de Cáncer/psicología , Amigos/psicología , Relaciones Interpersonales , Grupo Paritario , Autoinforme , Ajuste Social , Adolescente , Supervivientes de Cáncer/estadística & datos numéricos , Niño , Análisis Factorial , Femenino , Humanos , Masculino , Medición de Resultados Informados por el Paciente , Distancia Psicológica , Psicometría , Reproducibilidad de los Resultados
8.
BMC Womens Health ; 18(1): 162, 2018 10 03.
Artículo en Inglés | MEDLINE | ID: mdl-30285820

RESUMEN

BACKGROUND: Current cervical cancer screening guidelines recommend a Pap test every 3 years for women age 21-65 years, or for women 30-65 years who want to lengthen the screening interval, a combination of Pap test and high-risk human papilloma virus testing (co-testing) every 5 years. Little population-based data are available on human papilloma virus test utilization and human papilloma virus infection rates. The objective of this study was to examine the patient-level, cervical cancer screening, and area-level factors associated with human papilloma virus testing and infection among a diverse sample of uninsured and underinsured women enrolled in the New Jersey Cancer Early Education and Detection (NJCEED) Program. METHODS: We used data for a sample of 50,510 uninsured/underinsured women, age ≥ 29 years, who screened for cervical cancer through NJCEED between January 1, 2009 and December 31, 2015. Multivariable logistic regression models were used to estimate associations between ever having a human papilloma virus test or a positive test result, and individual- (age, race/ethnicity, birthplace) and area-level covariates (% below federal poverty level, % minority, % uninsured), and number of screening visits. RESULTS: Only 26.6% (13,440) of the sample had at least one human papilloma virus test. Among women who underwent testing, 13.3% (1792) tested positive for human papilloma virus. Most women who were positive for human papilloma virus (99.4%) had their first test as a co-test. Human papilloma virus test utilization and infection were significantly associated with age, race/ethnicity, birthplace (country), and residential area-level poverty. Rates of human papilloma virus testing and infection also differed significantly across counties in the state of New Jersey. CONCLUSIONS: These findings suggest that despite access to no-cost cervical cancer screening for eligible women, human papilloma virus test utilization was relatively low among diverse, uninsured and underinsured women in New Jersey, and test utilization and infection were associated with individual-level and area-level factors.


Asunto(s)
Detección Precoz del Cáncer/economía , Detección Precoz del Cáncer/métodos , Pacientes no Asegurados/estadística & datos numéricos , Prueba de Papanicolaou/economía , Infecciones por Papillomavirus/diagnóstico , Neoplasias del Cuello Uterino/diagnóstico , Frotis Vaginal/economía , Adulto , Anciano , Femenino , Humanos , Modelos Logísticos , Persona de Mediana Edad , Pobreza/estadística & datos numéricos , Proyectos de Investigación , Adulto Joven
9.
Palliat Support Care ; 15(4): 405-416, 2017 08.
Artículo en Inglés | MEDLINE | ID: mdl-27964770

RESUMEN

OBJECTIVE: Our aim was to compare changes in emotional processing by women newly diagnosed with gynecological cancer enrolled in either a coping and communication skills intervention (CCI) or a supportive counseling (SC) intervention. We examined the association between in-session emotional processing and patient-rated therapeutic progress. METHOD: Three therapy sessions with 201 patients were rated for the depth of emotional processing (peak and mode) during emotion episodes (EEs) using the Experiencing Rating Scale (EXP). Participants completed measures of dispositional emotional expressivity, depressive symptoms, and cancer-related distress before treatment began, as well as ratings of perceived progress in therapy after each session. RESULTS: Peak EXP ratings averaged between 2.7 and 3.1, indicating that women discussed events, their emotional reactions, and their private experiences in sessions. A small proportion of patients had high levels of processing, indicating deeper exploration of the meaning of their feelings and experiences. Women in SC were able to achieve a higher level of emotional processing during the middle and later sessions, and during cancer-related EEs in the later session. However, emotional processing was not significantly associated with a patient's perceived therapeutic progress with SC. In the CCI group, higher levels of emotional processing were associated with greater session progress, suggesting that it may play an important role in patient-rated treatment outcomes. SIGNIFICANCE OF RESULTS: Newly diagnosed gynecological cancer patients are able to attend to their emotions and personal experiences, particularly when discussing cancer-related issues during both short-term SC and prescriptive coping skills interventions.


Asunto(s)
Emociones , Neoplasias de los Genitales Femeninos/psicología , Psicoterapia/métodos , Factores de Tiempo , Adaptación Psicológica , Adulto , Depresión/etiología , Depresión/psicología , Femenino , Neoplasias de los Genitales Femeninos/complicaciones , Humanos , Persona de Mediana Edad , Percepción , Psicometría/instrumentación , Psicometría/métodos , Psicoterapia/normas , Estrés Psicológico/etiología , Estrés Psicológico/psicología , Encuestas y Cuestionarios , Resultado del Tratamiento
10.
J Mol Cell Cardiol ; 74: 103-11, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24838101

RESUMEN

Many important components of the cardiovascular system display circadian rhythmicity. In both humans and mice, cardiac damage from ischemia/reperfusion (I/R) is greatest at the transition from sleep to activity. The causes of this window of susceptibility are not fully understood. In the murine heart we have reported high amplitude circadian oscillations in the expression of the cardioprotective protein regulator of calcineurin 1 (Rcan1). This study was designed to test whether Rcan1 contributes to the circadian rhythm in cardiac protection from I/R damage. Wild type (WT), Rcan1 KO, and Rcan1-Tg mice, with cardiomyocyte-specific overexpression of Rcan1, were subjected to 45min of myocardial ischemia followed by 24h of reperfusion. Surgeries were performed either during the first 2h (AM) or during the last 2h (PM) of the animal's light phase. The area at risk was the same for all genotypes at either time point; however, in WT mice, PM-generated infarcts were 78% larger than AM-generated infarcts. Plasma cardiac troponin I levels were likewise greater in PM-operated animals. In Rcan1 KO mice there was no significant difference between the AM- and PM-operated hearts, which displayed greater indices of damage similar to that of PM-operated WT animals. Mice with cardiomyocyte-specific overexpression of human RCAN1, likewise, showed no time-of-day difference, but had smaller infarcts comparable to those of AM-operated WT mice. In vitro, cardiomyocytes depleted of RCAN1 were more sensitive to simulated I/R and the calcineurin inhibitor, FK506, restored protection. FK506 also conferred protection to PM-infarcted WT animals. Importantly, transcription of core circadian clock genes was not altered in Rcan1 KO hearts. These studies identify the calcineurin/Rcan1-signaling cascade as a potential therapeutic target through which to benefit from innate circadian changes in cardiac protection without disrupting core circadian oscillations that are essential to cardiovascular, metabolic, and mental health.


Asunto(s)
Calcineurina/genética , Péptidos y Proteínas de Señalización Intracelular/genética , Proteínas Musculares/genética , Daño por Reperfusión Miocárdica/genética , Miocardio/metabolismo , Animales , Animales Recién Nacidos , Proteínas CLOCK/genética , Proteínas CLOCK/metabolismo , Calcineurina/metabolismo , Inhibidores de la Calcineurina/farmacología , Proteínas de Unión al Calcio , Relojes Circadianos/genética , Susceptibilidad a Enfermedades , Regulación de la Expresión Génica , Humanos , Péptidos y Proteínas de Señalización Intracelular/deficiencia , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Proteínas Musculares/deficiencia , Daño por Reperfusión Miocárdica/metabolismo , Daño por Reperfusión Miocárdica/patología , Daño por Reperfusión Miocárdica/prevención & control , Miocardio/patología , Miocitos Cardíacos/efectos de los fármacos , Miocitos Cardíacos/metabolismo , Miocitos Cardíacos/patología , Fotoperiodo , Ratas , Transducción de Señal , Tacrolimus/farmacología
11.
Circ Res ; 109(4): 407-17, 2011 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-21700928

RESUMEN

RATIONALE: Studies to dissect the role of calcineurin in pathological cardiac remodeling have relied heavily on murine models, in which genetic gain- and loss-of-function manipulations are initiated at or before birth. However, the great majority of clinical cardiac pathology occurs in adults. Yet nothing is known about the effects of calcineurin when its activation commences in adulthood. Furthermore, despite the fact that ventricular hypertrophy is a well-established risk factor for heart failure, the relative pace and progression of these 2 major phenotypic features of heart disease are unknown. Finally, even though therapeutic interventions in adults are designed to slow, arrest, or reverse disease pathogenesis, little is known about the capacity for spontaneous reversibility of calcineurin-dependent pathological remodeling. OBJECTIVE: We set out to address these 3 questions by studying mice engineered to harbor in cardiomyocytes a constitutively active calcineurin transgene driven by a tetracycline-responsive promoter element. METHODS AND RESULTS: Expression of the mutant calcineurin transgene was initiated for variable lengths of time to determine the natural history of disease pathogenesis, and to determine when, if ever, these events are reversible. Activation of the calcineurin transgene in adult mice triggered rapid and robust cardiac growth with features characteristic of pathological hypertrophy. Concentric hypertrophy preceded the development of systolic dysfunction, fetal gene activation, fibrosis, and clinical heart failure. Furthermore, cardiac hypertrophy reversed spontaneously when calcineurin activity was turned off, and expression of fetal genes reverted to baseline. Fibrosis, a prominent feature of pathological cardiac remodeling, manifested partial reversibility. CONCLUSIONS: Together, these data establish and define the deleterious effects of calcineurin signaling in the adult heart and reveal that calcineurin-dependent hypertrophy with concentric geometry precedes systolic dysfunction and heart failure. Furthermore, these findings demonstrate that during much of the disease process, calcineurin-dependent remodeling remains reversible.


Asunto(s)
Calcineurina/metabolismo , Cardiomegalia/enzimología , Insuficiencia Cardíaca/enzimología , Miocitos Cardíacos/enzimología , Disfunción Ventricular Izquierda/enzimología , Remodelación Ventricular , Animales , Calcineurina/genética , Cardiomegalia/diagnóstico por imagen , Cardiomegalia/genética , Cardiomegalia/fisiopatología , Progresión de la Enfermedad , Doxiciclina/farmacología , Femenino , Fibrosis , Regulación Enzimológica de la Expresión Génica , Insuficiencia Cardíaca/diagnóstico por imagen , Insuficiencia Cardíaca/genética , Insuficiencia Cardíaca/fisiopatología , Humanos , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Transgénicos , Mutación , Contracción Miocárdica , Miocitos Cardíacos/patología , Regiones Promotoras Genéticas/genética , Factores de Tiempo , Ultrasonografía , Disfunción Ventricular Izquierda/diagnóstico por imagen , Disfunción Ventricular Izquierda/genética , Disfunción Ventricular Izquierda/fisiopatología , Función Ventricular Izquierda
12.
Circ Res ; 108(4): 437-45, 2011 Feb 18.
Artículo en Inglés | MEDLINE | ID: mdl-21233454

RESUMEN

RATIONALE: Despite overwhelming evidence of the importance of circadian rhythms in cardiovascular health and disease, little is known regarding the circadian regulation of intracellular signaling pathways controlling cardiac function and remodeling. OBJECTIVE: To assess circadian changes in processes dependent on the protein phosphatase calcineurin, relative to changes in phosphorylation of cardiac proteins, in normal, hypertrophic, and failing hearts. METHODS AND RESULTS: We found evidence of large circadian oscillations in calcineurin-dependent activities in the left ventricle of healthy C57BL/6 mice. Calcineurin-dependent transcript levels and nuclear occupancy of the NFAT (nuclear factor of activated T cells) regularly fluctuated as much as 20-fold over the course of a day, peaking in the morning when mice enter a period of rest. Phosphorylation of the protein phosphatase 1 inhibitor 1 (I-1), a direct calcineurin substrate, and phospholamban, an indirect target, oscillated directly out of phase with calcineurin-dependent signaling. Using a surgical model of cardiac pressure overload, we found that although calcineurin-dependent activities were markedly elevated, the circadian pattern of activation was maintained, whereas, oscillations in phospholamban and I-1 phosphorylation were lost. Changes in the expression of fetal gene markers of heart failure did not mirror the rhythm in calcineurin/NFAT activation, suggesting that these may not be direct transcriptional target genes. Cardiac function in mice subjected to pressure overload was significantly lower in the morning than in the evening when assessed by echocardiography. CONCLUSIONS: Normal, opposing circadian oscillations in calcineurin-dependent activities and phosphorylation of proteins that regulate contractility are disrupted in heart failure.


Asunto(s)
Calcineurina/fisiología , Ritmo Circadiano/fisiología , Insuficiencia Cardíaca/metabolismo , Hemodinámica/fisiología , Proteínas/metabolismo , Transducción de Señal/fisiología , Estrés Fisiológico/fisiología , Animales , Proteínas de Unión al Calcio/metabolismo , Modelos Animales de Enfermedad , Insuficiencia Cardíaca/fisiopatología , Ventrículos Cardíacos/metabolismo , Péptidos y Proteínas de Señalización Intracelular/metabolismo , Masculino , Ratones , Ratones Endogámicos C57BL , Proteínas Musculares/metabolismo , Factores de Transcripción NFATC/metabolismo , Fosforilación/fisiología , Proteína Fosfatasa 1/metabolismo
13.
Pharmacol Res ; 66(6): 494-504, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23059539

RESUMEN

Heart failure is the major case of death in developed countries, and its prevalence is growing worldwide. Autophagy is a fundamental cellular mechanism through which intracellular components can be removed, recycled and repaired. Studies in humans and animal models demonstrate a marked increase in cardiac autophagic activity under a wide range of disease states and in response to diverse stimuli. Recently, autophagy has been widely promoted as a potential therapeutic target for the treatment of cardiovascular disease and heart failure. An important challenge to achieving this goal is the dual nature of cardiac autophagy, sometimes acting to help preserve cardiac function, other times appearing to promote cardiac decline. Numerous control points regulating autophagic activity and cargo selection provide a diversity of opportunities for drug targeting. In addition there is an innate circadian rhythm to the systemic regulation of autophagy that is often overlooked but provides potential opportunities to target and optimize pharmacological intervention.


Asunto(s)
Autofagia , Insuficiencia Cardíaca/patología , Animales , Autofagia/efectos de los fármacos , Autofagia/fisiología , Relojes Circadianos , Insuficiencia Cardíaca/tratamiento farmacológico , Insuficiencia Cardíaca/metabolismo , Humanos , Mitocondrias Cardíacas/efectos de los fármacos , Mitocondrias Cardíacas/metabolismo , Mitocondrias Cardíacas/patología , Terapia Molecular Dirigida , Miocitos Cardíacos/efectos de los fármacos , Miocitos Cardíacos/metabolismo , Miocitos Cardíacos/patología , Transporte de Proteínas , Sarcómeros/efectos de los fármacos , Sarcómeros/metabolismo , Sarcómeros/patología
14.
J Manag Care Spec Pharm ; 28(1): 26-38, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-34949116

RESUMEN

BACKGROUND: Most patients with schizophrenia are diagnosed in their early twenties and often have commercial insurance at diagnosis. These young adults can experience changes in insurance coverage, that is, "churn," which can lead to disruptions in care. OBJECTIVE: To examine the frequency, speed, and type of insurance churn events in a young adult schizophrenia population with commercial insurance coverage at diagnosis. METHODS: The Colorado All-Payer Claims Database, containing insurance claims data from commercial and public insurers for Colorado residents, was used for the study. Eligible patients were required to have at least 1 inpatient or 2 outpatient claims for schizophrenia or schizoaffective disorder, be of age 18-34 years at index, have previous insurance coverage for 12 consecutive months, and have commercial insurance at diagnosis. These patients were 1:5 propensity score matched (PSM) with nonschizophrenia members. Percentages of members on different insurance types were calculated monthly to assess churn events. Cohorts were compared using descriptive statistics, Cox proportional hazards, and generalized estimating equation models. RESULTS: The matched schizophrenia and nonschizophrenia cohorts comprised 501 and 2,510 members, respectively. Before PSM, cohorts were imbalanced (schizophrenia cohort had a younger median age and higher proportion of males). After matching, the cohorts were similar in terms of the matched baseline characteristics. Previous mental health disorders were more common in the schizophrenia cohort (75%) than in the nonschizophrenia cohort (26%). The proportion of members with at least 1 churn event for the schizophrenia and nonschizophrenia cohorts, respectively, were 53.8% vs 36.5% after 12 months and 84.6% vs 69.2% after 48 months. Time to first churn event was significantly shorter in the schizophrenia cohort (16 months) than the nonschizophrenia cohort (23 months; P < 0.001). Schizophrenia cohort members had 64.1 and 56.8 churn events per 1,000 members per month vs 43.0 (P ≤ 0.001) and 42.8 (P = 0.011) churn events for nonschizophrenia cohort members in the first and second 6-month periods, respectively. Proportions of members in the schizophrenia and nonschizophrenia cohorts on public insurance, respectively, were 22.9% vs 6.9% after 12 months and 52.4% and 10.7% after 48 months. In the schizophrenia cohort, the most common churn event type was from commercial to public insurance rather than to a different commercial insurance; notably, 41% of members were still on a commercial plan 4 years after diagnosis. CONCLUSIONS: Young adults with schizophrenia experienced churn events more rapidly and more frequently than those without schizophrenia for the first 4 years studied after the index date. These disruptions may be associated with reduced access to care and treatment gaps in this vulnerable patient population. DISCLOSURES: This research was sponsored by Janssen Scientific Affairs, LLC. Pesa, Benson, and Patel are employees of Janssen Scientific Affairs, LLC, and are stockholders of Johnson & Johnson. Potluri, Rotter, and Papademetriou are employees of SmartAnalyst Inc, and their work on this study was funded by Janssen Pharmaceuticals. A version of this study was presented as a poster at the Psych Congress 2020 Virtual Experience, September 10-13, 2020.


Asunto(s)
Cobertura del Seguro , Seguro de Salud , Esquizofrenia/tratamiento farmacológico , Adolescente , Adulto , Colorado , Bases de Datos Factuales , Femenino , Costos de la Atención en Salud , Humanos , Cobertura del Seguro/tendencias , Masculino , Puntaje de Propensión , Estudios Retrospectivos , Adulto Joven
15.
J Med Econ ; 24(1): 1194-1203, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34666605

RESUMEN

AIMS: The primary objective was to examine direct costs and health resource utilization (HRU) among commercially insured young adults with schizophrenia (SCZ) in Colorado. MATERIALS AND METHODS: The Colorado All-Payer Claims Database, covering approximately 76% of the insured Colorado population was used. Members aged 18-34, with and without SCZ, having commercial insurance were included. All-cause, mental health (MH) related and non-MH related per patient per month (PPPM) costs and per hundred patients per month (PHPPM) HRU were compared between an SCZ cohort and a propensity score matched non-SCZ cohort before and after index date up to 48 months. RESULTS: Five hundred and one patients with SCZ and 2,510 matched individuals without SCZ were included. HRU and costs were higher for SCZ patients both pre- and post-index date. Pre-index, there were 32.3 (24.0 MH; 8.4 non-MH) PHPPM more office visits; 2.1 (2.7 MH) PHPPM more admissions; 104.8 (67.02 MH; 37.7 non-MH) PHPPM more prescriptions in the SCZ cohort (all p<.01). After index date, the SCZ cohort had 89.6 (81.3 MH; 9.2 non-MH) more PHPPM office visits, 7.2 (6.1 MH; 0.9 non-MH) PHPPM more admissions, and 181.6 (123.1 MH; 58.6 non-MH) PHPPM more prescriptions (all p<.001). All-cause costs in the pre-index period were $457 PPPM ($373 MH) higher for the SCZ cohort (p<.001). In the post-index period, all-cause costs for the SCZ cohort were $1,687 PPPM ($1,258 MH; $412 non-MH) higher (all p<.001). Approximately, 40% of patients with SCZ were on commercial insurance after four years compared with approximately 75% in the non-SCZ cohort. LIMITATIONS: This study was based on data from a single state, thus may not be generalizable to other states. CONCLUSIONS: Healthcare costs and HRU for young adults diagnosed with SCZ are significantly more burdensome to commercial payers than matched patients without SCZ, both before and after an official SCZ diagnosis.


Asunto(s)
Costo de Enfermedad , Esquizofrenia , Colorado/epidemiología , Costos de la Atención en Salud , Humanos , Aceptación de la Atención de Salud , Estudios Retrospectivos , Esquizofrenia/tratamiento farmacológico , Estados Unidos , Adulto Joven
16.
Brain Behav ; 11(2): e02000, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33403828

RESUMEN

OBJECTIVES: To create and validate a model to predict depression symptom severity among patients with treatment-resistant depression (TRD) using commonly recorded variables within medical claims databases. METHODS: Adults with TRD (here defined as > 2 antidepressant treatments in an episode, suggestive of nonresponse) and ≥ 1 Patient Health Questionnaire (PHQ)-9 record on or after the index TRD date were identified (2013-2018) in Decision Resource Group's Real World Data Repository, which links an electronic health record database to a medical claims database. A total of 116 clinical/demographic variables were utilized as predictors of the study outcome of depression symptom severity, which was measured by PHQ-9 total score category (score: 0-9 = none to mild, 10-14 = moderate, 15-27 = moderately severe to severe). A random forest approach was applied to develop and validate the predictive model. RESULTS: Among 5,356 PHQ-9 scores in the study population, the mean (standard deviation) PHQ-9 score was 10.1 (7.2). The model yielded an accuracy of 62.7%. For each predicted depression symptom severity category, the mean observed scores (8.0, 12.2, and 16.2) fell within the appropriate range. CONCLUSIONS: While there is room for improvement in its accuracy, the use of a machine learning tool that predicts depression symptom severity of patients with TRD can potentially have wide population-level applications. Healthcare systems and payers can build upon this groundwork and use the variables identified and the predictive modeling approach to create an algorithm specific to their population.


Asunto(s)
Trastorno Depresivo Mayor , Trastorno Depresivo Resistente al Tratamiento , Adulto , Antidepresivos/uso terapéutico , Demografía , Trastorno Depresivo Mayor/diagnóstico , Trastorno Depresivo Mayor/tratamiento farmacológico , Trastorno Depresivo Mayor/epidemiología , Trastorno Depresivo Resistente al Tratamiento/diagnóstico , Trastorno Depresivo Resistente al Tratamiento/tratamiento farmacológico , Trastorno Depresivo Resistente al Tratamiento/epidemiología , Humanos , Cuestionario de Salud del Paciente
17.
J Health Care Poor Underserved ; 30(2): 680-701, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31130545

RESUMEN

OBJECTIVES: To identify determinants of follow-up care and diagnosis of invasive cervical cancer among uninsured/underinsured women screened for cervical cancer. METHODS: We examined the associations between health care facility, area-level, and individual-level factors on the outcomes of interest in retrospective cohort of women from the New Jersey Cancer Education and Early Detection Program (2000-2015). RESULTS: Women screened at department of health clinics (aOR:3.11, 95% CI: 2.30-4.20) and health care system-affiliated clinics (aOR:1.71, 95% CI: 1.11-2.64) had higher odds of lacking follow-up care compared with women in private physician practices. Similarly, women residing in areas with the highest unemployment had higher odds of lacking follow-up (aOR:1.48, 95% CI: 1.07-2.06). Delays in follow-up care were higher for women born in Central/South American countries compared with U.S.-born women (aOR: 1.46, 95% CI: 1.12-1.92). CONCLUSIONS: Improved outreach efforts and multilevel strategies are needed to address the persistent barriers to appropriate follow-up care for underserved women.


Asunto(s)
Cuidados Posteriores/estadística & datos numéricos , Detección Precoz del Cáncer , Seguro de Salud/estadística & datos numéricos , Pacientes no Asegurados/estadística & datos numéricos , Neoplasias del Cuello Uterino/diagnóstico , Adulto , Escolaridad , Femenino , Humanos , Persona de Mediana Edad , New Jersey , Grupos Raciales/estadística & datos numéricos , Estudios Retrospectivos , Factores de Riesgo , Neoplasias del Cuello Uterino/terapia , Adulto Joven
18.
J Manag Care Spec Pharm ; 25(7): 800-809, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31232206

RESUMEN

BACKGROUND: Headlines in popular media suggest that Alzheimer disease will bankrupt the Medicare program. Indeed, Alzheimer disease affects more than 5 million older Medicare beneficiaries. OBJECTIVE: To compare total Medicare-covered (allowed) costs of patients with Alzheimer disease with the risk adjusted costs of beneficiaries without dementia over their last years of life, using claims data. METHODS: Using the Medicare 5 Percent Limited Data Set claim files from 2006-2015, we conducted a cost impact analysis of costs for up to 8 years before the year of death. Risk adjustment was performed at a beneficiary level using Medicare's 2015 Hierarchical Condition Categories. Beneficiaries were classified into dementia categories based on their diagnoses during the last 3 years of life. Costs were trend adjusted to 2015. RESULTS: This study found that 40% of deceased beneficiaries have Alzheimer disease or unspecified dementia diagnoses in their claims history. In their last 9 years of life, Alzheimer disease added about 11% to the average $17,000 per year Medicare cost for same-risk beneficiaries without dementia. CONCLUSIONS: Like many diseases, Alzheimer disease and dementia are associated with aging, but unlike other diseases, families and Medicaid, rather than Medicare, bear most of the substantial cost burden. As research continues into Alzheimer treatments, it is not too early to consider how to better integrate Medicare and Medicaid to fund and improve patient outcomes, which will likely involve better diagnosis, treatment, and care coordination. DISCLOSURES: Funding for this project was provided by the Alliance for Aging Research, which received funding from Biogen, Eli Lilly, and Janssen Pharmaceuticals. Peschin and Jenkins are employed by the Alliance for Aging Research. Scott was employed by the Alliance for Aging Research at the time of this study and also reports consulting fees from Piramal Imaging, General Electric, and Allergan, outside of this study. Scott is chair of the Board of Directors for the Alliance for Aging Research, which is a volunteer position, and is also president of Applied Policy, a health policy and reimbursement consultancy. Pyenson and Steffens are employed by Milliman, which was contracted to work on this study. Goss Sawhney and Rotter were employed by Milliman at the time this work was performed. Milliman is a consultant to thousands of organizations in the health care industry.


Asunto(s)
Enfermedad de Alzheimer/economía , Costos de la Atención en Salud/estadística & datos numéricos , Política de Salud/economía , Medicare/economía , Anciano , Anciano de 80 o más Años , Envejecimiento , Enfermedad de Alzheimer/diagnóstico , Enfermedad de Alzheimer/terapia , Costo de Enfermedad , Demencia/diagnóstico , Demencia/economía , Demencia/terapia , Femenino , Humanos , Masculino , Estados Unidos
19.
Am Health Drug Benefits ; 11(7): 353-361, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30647823

RESUMEN

BACKGROUND: Computed tomography (CT) colonography's effectiveness, its associated patient advantages, and its potential role to increase colorectal cancer (CRC) screening rates have been demonstrated in previous research, but whether CT colonography has a cost advantage relative to optical colonoscopy for the commercially insured US population has not been assessed. OBJECTIVE: To compare the costs of CRC screening using CT colonography or optical colonoscopy for commercially insured people in the United States. METHODS: Using retrospective commercial healthcare claims data and peer-reviewed studies, we performed a simulated multiyear, matched-case comparison of the costs of CT and optical colonoscopies for CRC screening. We estimated commercial optical colonoscopy costs per screening based on the 2016 Truven Health MarketScan Commercial Database and ancillary services, such as bowel preparation, anesthesia, pathology, and complication costs. We developed 4 scenarios for CT colonography cost per screening using the ratio of commercial to Medicare fees, and calculated ancillary service and follow-up costs from payers' costs for these services when associated with optical colonoscopies. For comparison, we converted the costs per screening to the costs per screening year per person using real-world screening intervals that were obtained from peer-reviewed studies. RESULTS: In 2016, the average optical colonoscopy screening cost for commercial payers was $2033 (N = 406,068), or $340 per screening year per person. With our highest-cost CT colonography scenario, CT colonography costs 22% less, or $265 per screening year, than optical colonoscopy, mostly because of the advantages for patients of no anesthesia and the greatly reduced use of pathology services. CONCLUSIONS: The use of CT colonography for CRC testing offers effective screening, patient-centered advantages, and lower costs compared with optical colonoscopy, and may be particularly appealing to the currently unscreened population with commercial health insurance. If the availability of CT colonography expands to meet the increased demand for it, CT colonography could cost up to 50% less than optical colonoscopy per screening year.

20.
Lung Cancer ; 125: 205-211, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-30429021

RESUMEN

PURPOSE: Early-stage lung cancer survivorsremain at high risk for recurrence or second cancers. We measured the rates and determinants of regular surveillance imaging in early-stage non-small cell lung cancer (NSCLC) survivors. METHODS: Patients (diagnosed 2001-2011) with resected stage I and II NSCLC were identified from the Surveillance Epidemiology and End Results (SEER)-Medicare linked database. Patients were censored at recurrence/second cancer diagnosis, loss to follow-up or death. Receipt of a scan during the surveillance periods of 7-18, 19-30, 31-42 and 43-60 months from date of surgery was assessed. RESULTS: Of 10,680 survivors assessed during the 18-month surveillance period, 71% received imaging in first 18 months. Only 56% and 43% continued to receive regular imaging by 30-month and 60-month of follow-up, respectively. Survivors were less likely to receive imaging if they were older, black, unmarried, received no adjuvant therapy, had stage I disease (vs. stage II) or were diagnosed before 2006. In adjusted analysis, survivors who received recommended imaging up to 18 months from surgery experienced better survival compared to survivors who did not (HR 0.92; 95% CI 0.85-0.99). Survival benefit was also observed in survivors who underwent regular imaging up to 5 years from surgery (HR 0.68; 95% CI 0.60-0.78). CONCLUSIONS: More than half the lung cancer survivors received less than the recommended long-term surveillance imaging. Long-term adherence to surveillance is associated with improved survival. Our study provides evidence to support the current clinical guidelines for surveillance for lung cancer survivors that are primarily consensus-based at present.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas/patología , Neoplasias Pulmonares/patología , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Terapia Combinada/métodos , Femenino , Estudios de Seguimiento , Humanos , Masculino , Medicare , Recurrencia Local de Neoplasia/patología , Estadificación de Neoplasias/métodos , Programa de VERF , Sobrevivientes , Estados Unidos
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA