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1.
Clin Transplant ; 35(9): e14426, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34269480

RESUMEN

Addressing racial disparities in living donor kidney transplants (LDKT) among Black patients warrants innovative programs to improve living donation rates. The Living Organ Video Educated Donors (LOVED) program is a 2-arm, culturally-tailored, distance-based, randomized controlled feasibility trial. The group-based, 8-week program used peer-navigator led video chat sessions and web-app video education for Black kidney waitlisted patients from United States southeastern state. Primary feasibility results for LOVED (n = 24) and usual care (n = 24) arms included LOVED program tolerability (i.e., 95.8% retention), program fidelity (i.e., 78.9% video education adherence and 72.1% video chat adherence). LDKT attitudinal and knowledge results favored the LOVED group where a statistically significant effect was reported over 6-months for willingness to approach strangers (estimate ± SE: -1.0 ± .55, F(1, 45.3) = 7.5, P = .009) and self-efficacy to advocate for a LDKT -.81 ± .31, F(1, 45.9) = 15.2, P < .001. Estimates were improved but not statistically significant for willingness to approach family and friends, LDKT knowledge and concerns for living donors (all P's > .088). Secondary measures at 6 months showed an increase in calls for LOVED compared to usual care (P = .008) though no differences were found for transplant center evaluations or LDKTs. Findings imply that LOVED increased screening calls and attitudes to approach potential donors but feasibility outcomes found program materials require modification to increase adherence.


Asunto(s)
Donadores Vivos , Listas de Espera , Negro o Afroamericano , Estudios de Factibilidad , Humanos , Riñón , Estados Unidos
2.
Arterioscler Thromb Vasc Biol ; 40(11): 2776-2784, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32814439

RESUMEN

OBJECTIVE: We aimed to characterize circulating HMGB1 (high-mobility group box-1) levels, one of the better-characterized damage-associated molecular patterns, with respect to age, sex, and race in the general population, and investigate the longitudinal associations of HMGB1 with inflammatory markers, obesity, and preclinical markers of cardiovascular disease. Approach and Results: The analyses included 489 participants (50% Blacks, aged 24.6±3.3 years at the first visit) with up to 4 follow-up visits (1149 samples) over a maximum of 8.5 years. Systolic blood pressure, diastolic blood pressure, carotid-femoral pulse wave velocity, and carotid intima-media thickness together with plasma HMGB1, hs-CRP (high-sensitivity C-reactive protein), IFN-γ (interferon-γ), IL-6 (interleukin-6), IL-10 (interleukin-10), and TNF-α (tumor necrosis factor-α) were measured at each visit. At baseline, plasma HMGB1 concentrations were higher in Blacks compared with Whites (3.86 versus 3.20 ng/mL, P<0.001), and in females compared with males (3.75 versus 3.30 ng/mL, P=0.005). HMGB1 concentrations increased with age (P=0.007), and higher levels of obesity measures (P<0.001). Without adjustment for age, sex, race, and body mass index, HMGB1 concentrations were positively associated with hs-CRP, IL-6, TNF-α, systolic blood pressure, diastolic blood pressure, and carotid-femoral pulse wave velocity (P<0.05) but not IL-10, IFN-γ or carotid intima-media thickness. After covariate adjustments, the associations of HMGB1 with hs-CRP, and carotid-femoral pulse wave velocity remained statistically significant (P<0.05). CONCLUSIONS: This study demonstrates the age, sex, and race differences in circulating HMGB1. The increasing circulating concentrations of HMGB1 with age suggest a potential role of HMGB1 in the pathogenesis of chronic low-grade inflammation, obesity, and subclinical cardiovascular disease risk.


Asunto(s)
Enfermedades Cardiovasculares/sangre , Proteína HMGB1/sangre , Inflamación/sangre , Obesidad/sangre , Adulto , Negro o Afroamericano , Factores de Edad , Biomarcadores/sangre , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/etnología , Femenino , Georgia/epidemiología , Factores de Riesgo de Enfermedad Cardiaca , Humanos , Inflamación/diagnóstico , Inflamación/etnología , Estudios Longitudinales , Masculino , Obesidad/diagnóstico , Obesidad/etnología , Pronóstico , Factores Raciales , Medición de Riesgo , Factores Sexuales , Factores de Tiempo , Regulación hacia Arriba , Población Blanca , Adulto Joven
3.
J Stroke Cerebrovasc Dis ; 30(8): 105815, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-34052785

RESUMEN

BACKGROUND: Geographical and racial disparities in stroke outcomes are especially prominent in the Southeastern United States, which represents a region more heavily burdened with stroke compared to the rest of the country. While stroke is eminently preventable, particularly via blood pressure control, fewer than one third of patients with a stroke have their blood pressure controlled ≥ 75% of the time, and low consistency of blood pressure control is linked to higher stroke risk. OBJECTIVE: To demonstrate that a mHealth technology-centered, integrated approach can effectively improve sustained blood pressure control among stroke patients (half of whom will be Black). DESIGN: The Program to Avoid Cerebrovascular Events through Systematic Electronic Tracking and Tailoring of an Eminent Risk-factor is a prospective randomized controlled trial, which will include a cohort of 200 patients with a stroke, encountered at two major safety net health care systems in South Carolina. The intervention comprises utilization of a Vaica electronic pill tray & blue-toothed UA-767Plus BT blood pressure device and a dedicated app installed on patients' smart phones for automatic relay of data to a central server. Providers will follow care protocols based on expert consensus practice guidelines to address optimal blood pressure management. STUDY OUTCOMES: Primary outcome is systolic blood pressure at 12-months, which is the major modifiable step to stroke event rate reduction. Secondary endpoints include control of other stroke risk factors, medication adherence, functional status, and quality of life. DISCUSSION: We anticipate that a successful intervention will serve as a scalable model of effective chronic blood pressure management after stroke, to bridge racial and geographic disparities in stroke outcomes in the United States. TRIAL REGISTRATION: ClinicalTrials.gov - NCT03401489.


Asunto(s)
Presión Sanguínea/efectos de los fármacos , Hipertensión/tratamiento farmacológico , Proveedores de Redes de Seguridad , Prevención Secundaria , Autocuidado , Accidente Cerebrovascular/prevención & control , Telemedicina , Adolescente , Adulto , Negro o Afroamericano , Anciano , Anciano de 80 o más Años , Ensayos Clínicos Fase II como Asunto , Ensayos Clínicos Fase III como Asunto , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Hipertensión/diagnóstico , Hipertensión/etnología , Hipertensión/fisiopatología , Masculino , Cumplimiento de la Medicación , Persona de Mediana Edad , Aplicaciones Móviles , Estudios Multicéntricos como Asunto , Estudios Prospectivos , Ensayos Clínicos Controlados Aleatorios como Asunto , Medición de Riesgo , Factores de Riesgo , Teléfono Inteligente , South Carolina , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/etnología , Factores de Tiempo , Resultado del Tratamiento , Población Blanca , Adulto Joven
4.
Stroke ; 49(1): 236-239, 2018 01.
Artículo en Inglés | MEDLINE | ID: mdl-29222227

RESUMEN

BACKGROUND AND PURPOSE: Stroke exacts an immense toll in sub-Saharan Africa where there are few resources, and stroke prevention research is limited. The aim of this study is to test the feasibility and preliminary efficacy of an m-Health technology-enabled, nurse-guided intervention in improving blood pressure (BP) control among Ghanaian stroke patients within 1 month of symptom onset. METHODS: We conducted a 2-arm cluster pilot randomized controlled trial involving 60 recent stroke survivors encountered within a single tertiary medical system in Ghana. Subjects in the intervention arm (n=30) received a Blue-toothed UA-767Plus BT BP device and smartphone for monitoring and reporting BP measurements and medication intake for 3 months compared with standard of care (n=30). Primary outcome measure was systolic BP <140 mm Hg at month 3; secondary outcomes included medication adherence and autonomous self-regulation. Analysis accounting for clustering was made using generalized linear mixed model by intention to treat. RESULTS: Mean±SD age was 55±13 years, 65% male. Systolic BP <140 mm Hg at month 3 was found in 20/30 subjects (66.7%) in the intervention arm versus 14/30 subjects (46.7%) in the control arm (P=0.12). Medication possession ratio scores at month 3 were better in the intervention (0.88±0.40) versus control (0.64±0.45) arm (P=0.03). One subject in control arm died from a recurrent hemorrhagic stroke. CONCLUSIONS: It is feasible to conduct an m-Health-based, nurse-guided BP control intervention among recent stroke patients in sub-Saharan Africa. We observed a potential signal of efficacy with the intervention, which will need to be tested in a future large definitive study. CLINICAL TRIAL REGISTRATION: URL: https://www.clinicaltrials.gov. Unique identifier: NCT02568137.


Asunto(s)
Monitoreo Ambulatorio de la Presión Arterial , Presión Sanguínea , Hemorragias Intracraneales , Teléfono Inteligente , Rehabilitación de Accidente Cerebrovascular/enfermería , Accidente Cerebrovascular , Adulto , Anciano , Monitoreo Ambulatorio de la Presión Arterial/instrumentación , Monitoreo Ambulatorio de la Presión Arterial/métodos , Femenino , Ghana , Humanos , Hemorragias Intracraneales/enfermería , Hemorragias Intracraneales/fisiopatología , Hemorragias Intracraneales/rehabilitación , Masculino , Persona de Mediana Edad , Proyectos Piloto , Accidente Cerebrovascular/enfermería , Accidente Cerebrovascular/fisiopatología , Sobrevivientes
5.
Ethn Dis ; 28(4): 511-516, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30405294

RESUMEN

Objective: To test the hypothesis that Angiotensin II (Ang II) is a contributing factor to the response pattern in African Americans (AAs) who retain rather than excrete sodium during mental stress. Design/Study Participants: Double-blind, randomized, cross-over trial of 87 healthy AAs aged 18 to 50 years. Interventions: The study participants received either a placebo or irbesartan, (150 mg PO), an Ang II receptor antagonist, for seven days prior to stress testing. Urinary sodium excretion (UNaV) and systolic blood pressure (SBP) were collected prior to and throughout a mental stress protocol (rest and stress period). Setting: A southeastern university. Main Outcome Measures: Ang II, SBP, and sodium retention. Results: During the placebo condition, 62 participants showed the expected increase in UNaV (excreters) while 25 participants reduced UNaV during stress (retainers). Irbesartan retainers demonstrated a reversal in the direction of their natriuretic response, now increasing UNaV in response to stress (∆ UNaV of -.094 mmol/min with placebo vs .052 mmol/min on irbesartan; P<.001). In excreters, irbesartan reduced SBP levels during both rest (-2.36 mm Hg; P=.03) and stress (-4.59;P<.0001), and an even more pronounced reduction in SBP was demonstrated by retainers on treatment during both rest (-4.29 mm Hg; P=.03) and stress (-6.12; P<.001). Conclusions: Ang II contributes to sodium retention in retainers. Furthermore, our findings indicate that suppression of Ang II has a beneficial effect on SBP during rest and stress in this population.


Asunto(s)
Angiotensina II/metabolismo , Negro o Afroamericano/psicología , Presión Sanguínea/fisiología , Irbesartán/farmacología , Eliminación Renal/fisiología , Sodio , Estrés Psicológico , Adulto , Antagonistas de Receptores de Angiotensina/farmacología , Estudios Cruzados , Diuréticos/farmacología , Método Doble Ciego , Voluntarios Sanos , Humanos , Masculino , Persona de Mediana Edad , Sodio/metabolismo , Sodio/orina , Estrés Psicológico/metabolismo , Estrés Psicológico/fisiopatología
6.
Am J Drug Alcohol Abuse ; 44(5): 561-570, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29737885

RESUMEN

BACKGROUND: Similar to adult smokers, quit attempts among younger smokers almost inevitably result in relapse. Unlike adults, less is known about the process of relapse in this younger age group. A technology-based remote monitoring system may allow for detailed and accurate characterization of smoking and abstinence and would help to improve cessation strategies. OBJECTIVES: This study describes a mobile system that captures smoking using breath carbon monoxide (CO) and real-time self-reports of smoking behavior. Compliance, feasibility, acceptability, and accuracy of the system were measured during a quit attempt and subsequent monitoring period. METHODS: The mobile application (My Mobile Monitor, M3) combined breath CO with ecological momentary assessment, delivered via smartphone. Participants (N = 16; 75% female) were daily smokers between the ages of 19 and 25, who used the app for 11 days during which they agreed to make a quit attempt. Acceptability, compliance, and abstinence were measured. RESULTS: Participants averaged 22.3 ± 2.0 years old and smoked an average of 13.0 ± 6.1 cigarettes per day. Overall session compliance was 69% and during the quit attempt, 56% of participants abstained from smoking for at least 24 hours. Agreement between self-reported smoking compared to breath CO was generally high, when available for comparison, though underreporting of cigarettes was likely. CONCLUSION: This study demonstrates feasibility of a remote monitoring app with younger smokers, though improvements to promote compliance are needed. Remote monitoring to detect smoking and abstinence represents a step forward in the improvement of cessation strategies, but user experience and personalization are vital.


Asunto(s)
Fumar Cigarrillos/epidemiología , Evaluación Ecológica Momentánea , Aplicaciones Móviles , Cese del Hábito de Fumar/métodos , Adulto , Pruebas Respiratorias/métodos , Monóxido de Carbono/análisis , Fumar Cigarrillos/prevención & control , Fumar Cigarrillos/psicología , Femenino , Humanos , Masculino , Aceptación de la Atención de Salud , Cooperación del Paciente , Recurrencia , Autoinforme , Teléfono Inteligente , Fumadores/psicología , Cese del Hábito de Fumar/psicología , Factores de Tiempo , Adulto Joven
7.
Circulation ; 131(19): 1674-81, 2015 May 12.
Artículo en Inglés | MEDLINE | ID: mdl-25858196

RESUMEN

BACKGROUND: The purposes of this study were to assess the long-term effect of adverse childhood experiences (ACEs) on blood pressure (BP) trajectories from childhood to young adulthood and to examine whether this relation is explained by childhood socioeconomic status (SES) or risk behaviors that are associated with ACEs. METHODS AND RESULTS: Systolic and diastolic BPs were measured up to 16 times (13 times on average) over a 23-year period in 213 African Americans and 181 European Americans 5 to 38 years of age. Retrospective data on traumatic experiences before 18 years of age were collected, including abuse, neglect, and household dysfunction. Individual growth curve modeling within a multilevel framework was used to examine the relation between exposure to ACEs and BP development. No main effect of ACEs on average BP levels was found. However, a significant interaction of ACE score with age(3) was observed (systolic BP, P=0.033; diastolic BP, P=0.017). Subjects who experienced multiple traumatic events during childhood showed a faster rise in BP levels after 30 years of age than those without ACEs. As expected, a graded association of ACEs with childhood socioeconomic status and negative health behaviors was observed (P<0.001). The ACE-systolic BP relation was not explained by these factors, whereas the ACE-diastolic BP relation was partially mediated by illicit drug use. CONCLUSION: In this novel longitudinal study, we observed that participants who were exposed to multiple ACEs displayed a greater increase in BP levels in young adulthood compared with their counterparts without ACEs.


Asunto(s)
Presión Sanguínea , Maltrato a los Niños/estadística & datos numéricos , Conflicto Familiar , Hipertensión/etiología , Adolescente , Adulto , Negro o Afroamericano/estadística & datos numéricos , Niño , Preescolar , Femenino , Estudios de Seguimiento , Georgia/epidemiología , Trastornos del Crecimiento/epidemiología , Trastornos del Crecimiento/fisiopatología , Conductas Relacionadas con la Salud , Humanos , Hipertensión/epidemiología , Masculino , Factores de Riesgo , Fumar/epidemiología , Fumar/fisiopatología , Factores Socioeconómicos , Estrés Psicológico/etiología , Estrés Psicológico/fisiopatología , Trastornos Relacionados con Sustancias/epidemiología , Trastornos Relacionados con Sustancias/fisiopatología , Encuestas y Cuestionarios , Población Blanca/estadística & datos numéricos , Adulto Joven
8.
J Am Pharm Assoc (2003) ; 56(4): 450-454.e1, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27450140

RESUMEN

OBJECTIVES: To assess smartphone ownership, use of mobile health (mHealth) applications, and willingness to use this technology to facilitate medication management after kidney transplantation. METHODS: A survey was developed with the use of previously validated questions and administered to stable adult kidney recipients from May to July 2015. Descriptive and comparative statistics were used to assess willingness to utilize mHealth technology as it related to sociodemographics, medication adherence, and medication side effects. Comparisons were also made to a survey administered in 2012. The primary outcome was the incidence of cell phone and smartphone ownership, willingness to use mHealth, immunosuppressant side effects, and self-reported nonadherence. RESULTS: A total of 142 patients were approached, and 139 (98%) agreed to participate; 96% of respondents indicated mobile phone ownership, 61% owned a smartphone, 30% had prior knowledge of mHealth, and 7% were already using an mHealth app; 78% reported a positive attitude toward the use of mHealth for medication management. Smartphone ownership has nearly doubled since 2012 (61% vs. 35%; P <0.001). Patients <55 years of age were more likely to own smartphones (75% vs. 46%; P <0.001) and to strongly agree with the use of mHealth (62% vs. 36%; P = 0.015). Self-reported nonadherence or severe medication side effects did not appreciably influence a patient's willingness to use mHealth. CONCLUSION: Among recipients of kidney transplants, smartphone ownership has dramatically increased, and recipients have a positive attitude toward the use of mHealth for medication management.


Asunto(s)
Trasplante de Riñón , Aplicaciones Móviles/estadística & datos numéricos , Aceptación de la Atención de Salud/estadística & datos numéricos , Teléfono Inteligente/estadística & datos numéricos , Receptores de Trasplantes/estadística & datos numéricos , Adolescente , Adulto , Factores de Edad , Anciano , Estudios Transversales , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Inmunosupresores/administración & dosificación , Inmunosupresores/efectos adversos , Masculino , Cumplimiento de la Medicación , Persona de Mediana Edad , Factores Socioeconómicos , Receptores de Trasplantes/psicología , Adulto Joven
9.
Prog Transplant ; 25(1): 26-34, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25758797

RESUMEN

CONTEXT: Dialysis patients' lifestyles are associated with low levels of physical activity, increasing the chances of being removed from kidney waiting lists or dying while awaiting transplant because of increased cardiovascular risk factors and deteriorating health conditions. Personalized mobile health (mHealth) delivered programs may support their engagement in healthier lifestyles, maintain transplant eligibility, and reduce premature mortality. OBJECTIVE: To explore barriers and perceptions of physical activity behaviors and gauge interest in using mHealth in a physical activity wellness program for dialysis patients on the kidney transplant waiting list. PARTICIPANTS AND DESIGN: In-depth key informant interviews were conducted with 22 randomly selected dialysis patients during dialysis treatment in an urban Southeastern coastal city. A theory-guided community-based participatory research approach was used to develop the interview content. Constructivist grounded theory guided the data analysis using NVIVO 10 (QSR Int). The 32-item checklist from the Consolidated Criteria for Reporting Qualitative Studies was used in the qualitative reporting. RESULTS: Dialysis patients had a mean age of 46 (SD, 10.7) years, 45% were female, and 82% were African American. Their mean duration on transplant waiting lists was 6.7 (SD 4.3) years, and 73% owned smartphones. After saturation was reached, predominant themes included (1) physical activity was perceived as optional, (2) social support both encouraged and limited physical activity, (3) chronic stress and coping influenced physical activity, (4) spirituality provided strength to engage in physical activity, (5) self-care management practices varied considerably, and (6) high interest (95%) for using mHealth to promote physical activity was found. Patients preferred their home and neighborhood environments to intradialytic settings for engaging in physical activity.


Asunto(s)
Actitud hacia los Computadores , Actitud Frente a la Salud , Teléfono Celular , Ejercicio Físico , Trasplante de Riñón/psicología , Trasplante de Riñón/rehabilitación , Listas de Espera , Actitud Frente a la Muerte , Lista de Verificación , Investigación Participativa Basada en la Comunidad , Femenino , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Calidad de Vida , Diálisis Renal , Factores de Riesgo , Autocuidado , Determinantes Sociales de la Salud , Apoyo Social , Estrés Psicológico
10.
Prog Transplant ; 25(2): 164-75, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26107278

RESUMEN

CONTEXT: The increasing shortage of deceased donor kidneys suitable for African Americans highlights the critical need to increase living donations among African Americans. Little research has addressed African American transplant recipients' perspectives on challenges and barriers related to the living donation process. OBJECTIVE: To understand the perspectives of African American recipients of deceased and living donor kidney transplants on challenges, barriers, and educational needs related to pursuing such transplants. PARTICIPANTS AND DESIGN: A mixed-method design involved 27 African American kidney recipients (13 male) in 4 focus groups (2 per recipient type: 16 African American deceased donor and 11 living donor recipients) and questionnaires. Focus group transcripts were evaluated with NVivo 10.0 (QSR, International) by using inductive and deductive qualitative methods along with crystallization to develop themes of underlying barriers to the living donor kidney transplant process and were compared with the questionnaires. RESULTS: Four main themes were identified from groups: concerns, knowledge and learning, expectations of support, and communication. Many concerns for the donor were identified (eg, process too difficult, financial burden, effect on relationships). A general lack of knowledge about the donor process and lack of behavioral skills on how to approach others was noted. The latter was especially evident among deceased donor recipients. Findings from the questionnaires on myths and perceptions supported the lack of knowledge in a variety of domains, including donors' surgical outcomes risks, costs of surgery, and impact on future health. Participants thought that an educational program led by an African American recipient of a living donor kidney transplant, including practice in approaching others, would increase the likelihood of transplant-eligible patients pursuing living donor kidney transplant.


Asunto(s)
Negro o Afroamericano/psicología , Conocimientos, Actitudes y Práctica en Salud/etnología , Fallo Renal Crónico/cirugía , Trasplante de Riñón/psicología , Donadores Vivos/psicología , Obtención de Tejidos y Órganos , Adulto , Actitud Frente a la Salud , Femenino , Grupos Focales , Humanos , Donadores Vivos/educación , Masculino , Persona de Mediana Edad , Educación del Paciente como Asunto , Encuestas y Cuestionarios , Estados Unidos/epidemiología
11.
Prog Transplant ; 25(3): 217-23, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26308780

RESUMEN

Context-Very few patient-centered, theory-guided programs for medication adherence and blood pressure control have been conducted in kidney transplant recipients. Objective-To evaluate preliminary indications of sustainability of improved blood pressure in kidney transplant recipients 12 months after completion of a 3-month randomized controlled trial of a mobile health pilot program to improve blood pressure and medication adherence. Participants and Design-A total of 18 of the 19 trial participants were contacted and all consented to inclusion in the retrospective analysis of their medical records showing their clinic-recorded systolic blood pressures at 3, 6, and 12 months following participation in the 3-month trial of a medical regimen self-management intervention. Results-A significant group difference in systolic blood pressure was observed longitudinally, indicating that the intervention group, as compared with the standard-care group, exhibited lower clinic-measured systolic blood pressures at the 12-month posttrial follow-up visit (P= .01). At 12-month follow-up, success in establishing and sustaining control of systolic blood pressure (<131 mm Hg) was greater in the intervention group (50%) than in the control group (11%). Conclusion-Patients in the intervention group continued to exhibit lower systolic blood pressure than did patients in the control group 12 months after the trial ended, suggesting that the intervention may have a durable impact on blood pressure control that most likely reflects sustained medication adherence. These findings will aid in the development of an adequately powered randomized controlled trial to address the sustainable impact of the intervention program on medication adherence and blood pressure control.


Asunto(s)
Antihipertensivos/uso terapéutico , Presión Sanguínea , Hipertensión/tratamiento farmacológico , Trasplante de Riñón , Cumplimiento de la Medicación , Autoadministración , Adulto , Antihipertensivos/administración & dosificación , Femenino , Humanos , Masculino , Persona de Mediana Edad , Aplicaciones Móviles , Proyectos Piloto , Telemedicina , Resultado del Tratamiento
12.
Twin Res Hum Genet ; 17(3): 183-91, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24735745

RESUMEN

BACKGROUND: Previous genome-wide association studies (GWAS) have identified a large number of genetic variants for obesity and its related traits, representing a group of potential key genes in the etiology of obesity. Emerging evidence suggests that epigenetics may play an important role in obesity. It has not been explored whether the GWAS-identified loci contribute to obesity through epigenetics (e.g., DNA (deoxyribonucleic acid) methylation) in addition to genetics. METHOD: A multi-stage cross-sectional study was designed. We did a literature search and identified 117 genes discovered by GWAS for obesity and its related traits. Then we analyzed whether the methylation levels of these genes were also associated with obesity in two genome-wide methylation panels. We examined an initial panel of seven adolescent obese cases and seven age-matched lean controls, followed by a second panel of 48 adolescent obese cases and 48 age- and gender-matched lean controls. The validated CpG sites were further replicated in two independent replication panels of youth (46 vs. 46 and 230 cases vs. 413 controls, respectively) and a general population of youth, including 703 healthy subjects. RESULTS: One CpG site in the lymphocyte antigen 86 (LY86) gene, which showed higher methylation in the obese in both the initial (p = .009) and second genome-wide DNA methylation panel (p = .008), was further validated in both replication panels (meta p = .00016). Moreover, in the general population of youth, the methylation levels of this region were significantly correlated with adiposity indices (p ≤ .02), insulin resistance (p = .001), and inflammatory markers (p < .001). CONCLUSION: By focusing on recent GWAS findings in genome-wide methylation profiles, we identified a solid association between LY86 gene DNA methylation and obesity.


Asunto(s)
Antígenos de Superficie/genética , Biomarcadores/análisis , Metilación de ADN , Inflamación/genética , Resistencia a la Insulina/genética , Obesidad/genética , Polimorfismo de Nucleótido Simple/genética , Adolescente , Adulto , Estudios de Casos y Controles , Islas de CpG/genética , Estudios Transversales , Epigénesis Genética , Femenino , Genoma Humano , Estudio de Asociación del Genoma Completo , Humanos , Masculino , Reacción en Cadena de la Polimerasa , Adulto Joven
13.
Comput Inform Nurs ; 32(8): 390-6, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24949713

RESUMEN

The objective of this study was to explore the use of computer and cellular phone technology among older adults living in the rural Appalachian region of North Carolina. A 21-item questionnaire on access to and use of computer and cellular phone technology was administered to 43 older adults, using dichotomous and frequency-rated questions. The sample was recruited from two rural senior centers in the Appalachian region of North Carolina. Forty percent of the participants earned $20 000 or less annually. The majority owned a cellular phone (79.9%), and nearly half had a desktop computer (44.2%). High-speed Internet coverage was the most frequent type (42%) of in-home coverage. This study provides insights into the needs and challenges of older rural Appalachians with regard to technology. Computer technology may be more accessible and have fewer barriers by older adults than other forms of technology. Future research should explore the levels of computer literacy of older adults.


Asunto(s)
Teléfono Celular/estadística & datos numéricos , Alfabetización Digital , Población Rural/tendencias , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Humanos , Masculino , North Carolina , Encuestas y Cuestionarios
14.
Psychosom Med ; 75(4): 404-12, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23576770

RESUMEN

OBJECTIVE: This study examined the genetic and environmental contributions to the individual differences in blood pressure (BP) levels and underlying hemodynamic characteristics at rest and during mental challenge tasks in a large twin cohort of youth. Including both European American and African American twins further allowed examination of potential ethnic differences. METHODS: We studied cardiovascular reactivity to two stressors (car-driving simulation and a social stressor interview) in 308 European American and 223 African American twin pairs including monozygotic twin pairs and same-sex as well as opposite-sex dizygotic twin pairs (mean [standard deviation] age = 14.7 [3.1]). Variables included systolic and diastolic BP, heart rate, stroke volume, cardiac output, and total peripheral resistance. RESULTS: Heritability indices for levels at rest and during stress were high (31%-73%) and comparable between ethnic groups. A common genetic factor accounted for both resting and stress levels explaining 23% to 58% of the total variance. The increases in heritability indices for BP and heart rate from rest to stress are mostly explained by newly emerging genetic influences on the added stress component. Indices for hemodynamic variables remained stable from rest to stress owing to a simultaneous decrease in genetic and environmental variances. CONCLUSIONS: Cardiovascular measures obtained during rest and stress show substantial heritability that is comparable between individuals of African and European descent. Most of the variance in both resting and stress levels is explained by common genetic factors, although other genetic factors that only contribute to cardiovascular levels during stress are also important.


Asunto(s)
Presión Sanguínea/genética , Descanso/fisiología , Estrés Psicológico/genética , Adolescente , Adulto , Conducción de Automóvil , Población Negra/genética , Niño , Simulación por Computador , Femenino , Georgia , Hemodinámica/genética , Humanos , Masculino , Repeticiones de Microsatélite , Modelos Genéticos , Estrés Psicológico/etnología , Estrés Psicológico/fisiopatología , Gemelos Dicigóticos/genética , Gemelos Monocigóticos/genética , Población Blanca/genética , Adulto Joven
15.
Ann Behav Med ; 45(3): 377-86, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23436272

RESUMEN

BACKGROUND: Everyday discrimination scale scores are associated with increased ambulatory blood pressure (BP) and reduced nocturnal dipping, and the endothelin-1 (ET-1)/Lys198Asn polymorphism is associated with increased resting BP and exaggerated BP reactivity among African Americans compared to European Americans. Combined influences of these factors on BP control are unknown. PURPOSE: This study tested the hypothesis of a three-way interaction between ethnicity, ET-1 carrier status, and everyday discrimination upon ambulatory BP and nocturnal dipping. METHODS: Baseline laboratory anthropometrics and the everyday discrimination scale were completed by 352 (175 African American) young adult normotensives, followed by 24-h ambulatory BP monitoring. RESULTS: For nocturnal dipping, multiple regression models controlling for age, sex, ethnicity, and body mass index revealed significant three-way ET-1 × everyday discrimination × ethnicity interactions. Specifically, among African American ET-1 T-allele carriers, increases in everyday discrimination led to reduced nocturnal dipping. CONCLUSIONS: African Americans that carry the ET-1/Lys198Asn T-allele and report higher everyday discrimination scores may be at particular risk for reduced nocturnal dipping.


Asunto(s)
Negro o Afroamericano/genética , Presión Sanguínea/genética , Ritmo Circadiano/genética , Discriminación en Psicología/fisiología , Endotelina-1/genética , Población Blanca/genética , Adolescente , Alelos , Monitoreo Ambulatorio de la Presión Arterial , Femenino , Humanos , Hipertensión/etnología , Hipertensión/genética , Masculino , Polimorfismo de Nucleótido Simple , Adulto Joven
16.
J Med Internet Res ; 15(1): e6, 2013 Jan 08.
Artículo en Inglés | MEDLINE | ID: mdl-23305649

RESUMEN

BACKGROUND: Mobile phone based remote monitoring of medication adherence and physiological parameters has the potential of improving long-term graft outcomes in the recipients of kidney transplants. This technology is promising as it is relatively inexpensive, can include intuitive software and may offer the ability to conduct close patient monitoring in a non-intrusive manner. This includes the optimal management of comorbidities such as hypertension and diabetes. There is, however, a lack of data assessing the attitudes of renal transplant recipients toward this technology, especially among ethnic minorities. OBJECTIVE: To assess the attitudes of renal transplant recipients toward mobile phone based remote monitoring and management of their medical regimen; and to identify demographic or clinical characteristics that impact on this attitude. METHODS: After a 10 minute demonstration of a prototype mobile phone based monitoring system, a 10 item questionnaire regarding attitude toward remote monitoring and the technology was administered to the participants, along with the 10 item Perceived Stress Scale and the 7 item Morisky Medication Adherence Scale. RESULTS: Between February and April 2012, a total of 99 renal transplant recipients were identified and agreed to participate in the survey. The results of the survey indicate that while 90% (87/97) of respondents own a mobile phone, only 7% (7/98) had any prior knowledge of mobile phone based remote monitoring. Despite this, the majority of respondents, 79% (78/99), reported a positive attitude toward the use of a prototype system if it came at no cost to themselves. Blacks were more likely than whites to own smartphones (43.1%, 28/65 vs 20.6%, 7/34; P=.03) and held a more positive attitude toward free use of the prototype system than whites (4.25±0.88 vs 3.76±1.07; P=.02). CONCLUSIONS: The data demonstrates that kidney transplant recipients have a positive overall attitude toward mobile phone based health technology (mHealth). Additionally, the data demonstrates that most kidney transplant recipients own and are comfortable using mobile phones and that many of these patients already own and use smart mobile phones. The respondents felt that mHealth offers an opportunity for improved self-efficacy and improved provider driven medical management. Respondents were comfortable with the idea of being monitored using mobile technology and are confident that their privacy can be protected. The small subset of kidney transplant recipients who are less interested in mHealth may be less technologically adept as reflected by their lower mobile phone ownership rates. As a whole, kidney transplant recipients are receptive to the technology and believe in its utility.


Asunto(s)
Teléfono Celular , Trasplante de Riñón , Monitoreo Ambulatorio , Telemedicina/métodos , Adulto , Anciano , Actitud Frente a la Salud , Teléfono Celular/estadística & datos numéricos , Femenino , Humanos , Internet , Trasplante de Riñón/fisiología , Trasplante de Riñón/psicología , Masculino , Persona de Mediana Edad , Monitoreo Ambulatorio/psicología , Cooperación del Paciente , Encuestas y Cuestionarios
17.
J Med Internet Res ; 15(4): e76, 2013 Mar 30.
Artículo en Inglés | MEDLINE | ID: mdl-23624105

RESUMEN

BACKGROUND: Mobile phone-based interventions present a means of providing high quality health care to hard-to-reach underserved populations. Migrant farm workers (MFWs) are among the most underserved populations in the United States due to a high prevalence of chronic diseases yet limited access to health care. However, it is unknown if MFWs have access to mobile phone devices used in mobile health (mHealth) interventions, or if they are willing to use such technologies. OBJECTIVE: Determine rates of ownership of mobile devices and willingness to use mHealth strategies in MFWs. METHODS: A demonstration of mHealth devices and a survey were individually administered to 80 Hispanic MFWs to evaluate use of mobile phones and mHealth devices and willingness to use such technologies. RESULTS: Of the 80 participants, 81% (65/80) owned cell phones capable of sending and receiving health-related messages. Most participants (65/80, 81%) were receptive to using mHealth technology and felt it would be helpful in enhancing medication adherence, self-monitoring health conditions, and receiving quicker medication changes from their doctors (median scores ≥4 on 5-point Likert scales). Relations between age and attitudes toward using mHealth were not statistically significant. CONCLUSIONS: Hispanic MFWs have access to mobile phones and are willing to use mHealth devices. Future work is needed to comprehensively evaluate the degree to which these devices could be used.


Asunto(s)
Teléfono Celular , Hispánicos o Latinos/psicología , Telemedicina , Migrantes/psicología , Adulto , Agricultura , Actitud Frente a la Salud , Teléfono Celular/estadística & datos numéricos , Enfermedad Crónica , Femenino , Humanos , Masculino , South Carolina , Telemedicina/estadística & datos numéricos , Adulto Joven
18.
Fatigue ; 11(1): 14-34, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37982097

RESUMEN

Objective: Sarcoidosis-associated fatigue is a debilitating consequence of sarcoidosis, a multi-system inflammatory disease, and may be related to increased stress associated with sarcoidosis. Breathing awareness meditation has potential as an intervention for managing stress and fatigue for sarcoidosis patients (SPs). This project's aim was to obtain feedback from key informants to design and tailor a patient-centered Sarcoidosis Patient Resource and Companion (SPARC) mHealth App developed for SPs to manage fatigue and stress at home using breathing awareness meditation. Methods: We used a mixed-method patient/user-centered design with triangulation to understand SPs experiences of sarcoidosis-associated fatigue and stress (n = 13), and obtain feedback on the SPARC App-prototype integrating breathing awareness meditation from these SPs and health care team members (HCTMs; n = 5). Using deductive content analysis, transcribed interviews were coded for themes and subthemes. Results: We report on findings from qualitative interviews and assessment of SPs' experiences including themes describing fatigue/stress interactions. Themes indicated that SPs find fatigue to be a profoundly difficult experience affecting multiple domains of functioning for which they perceive few effective strategies to cope. SPs and HCTMs shared feedback on the SPARC App-prototype after a test session; it was reported to be user friendly and to have potential for improving fatigue/stress, and key points for tailoring the App to SPs were shared. Conclusion: Sarcoidosis-associated fatigue poses a significant burden for SPs. The SPARC App-prototype with breathing awareness meditation was acceptable and feasible to use and was well-received by SPs and HCTMs. Future iterations of the SPARC App to test the effect of breathing awareness meditation on fatigue will need to incorporate recommendations for tailoring for SPs.

19.
Contemp Clin Trials Commun ; 32: 101062, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36718177

RESUMEN

Fatigue is the most reported symptom in patients with sarcoidosis (SPs) and is a significant predictor of decreased quality of life that is strongly associated with stress and negative mood states. Few medications exist for treating fatigue in SPs, and outpatient physical rehabilitation programs are limited by availability and cost. Sarcoidosis in the US predominantly impacts minorities and underserved populations who are of working age and often have limited resources (e.g., financial, transportation, time off work) that may prevent them from attending in-person programs. The use of mobile health (mHealth) is emerging as a viable alternative to provide access to self-management resources to improve quality of life. The Sarcoidosis Patient Assessment and Resource Companion (SPARC) App is a sarcoidosis-specific mHealth App intended to improve fatigue and stress in SPs. It prompts SPs to conduct breathing awareness meditation (BAM) and contains educational modules aimed at improving self-efficacy. Herein we describe the design and methods of a 3-month randomized control trial comparing use of the SPARC App (10-min BAM twice daily) to standard care in 50 SPs with significant fatigue (FAS ≥22). A Fitbit® watch will provide immediate heartrate feedback after BAM sessions to objectively monitor adherence. The primary outcomes are feasibility and usability of the SPARC App (collected monthly). Secondary endpoints include preliminary efficacy at improving fatigue, stress, and quality of life. We expect the SPARC App to be a useable and feasible intervention that has potential to overcome barriers of more traditional in-person programs.

20.
Artículo en Inglés | MEDLINE | ID: mdl-22675392

RESUMEN

Background. An early sign of ventricular remodeling is increased left ventricular mass (LVM) which over time may lead to left ventricular hypertrophy, the strongest predictor of cardiovascular morbidity and mortality, other than advancing age. Methods. 62 (30 TM; 32 CTL) African American adolescents (age 16.2 ± 1.3 years) with high normal systolic BP were randomly assigned to either 4-month Transcendental Meditation (TM) or health education control groups. The echocardiographic-derived measure of LVM index (LVMI = LVM/ht(2.7)) was measured before and after the 4-month TM study and at 4-month followup. 2D-guided M-mode echocardiography using a Hewlett Packard 5500 echosonograph was used to determine LVMI. Results. The TM group exhibited a greater decrease in LVMI at 4-month followup compared to the CTL group (-2.6 versus +0.3 gm/ht(2.7), P < 0.04). The TM group exhibited a lesser increase in BMI at 4-month follow-up compared to the CTL group (0.2 ± 1.6 versus 1.1 ± 1.4, P < 0.03). Conclusion. These findings indicate that among a group of prehypertensive African American adolescents, 4 months of TM compared to heath education resulted in a significant decrease in LVMI, and these changes were maintained at 4-month follow-up.

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