Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 88
Filtrar
1.
Nutrients ; 13(2)2021 Jan 31.
Artículo en Inglés | MEDLINE | ID: mdl-33572489

RESUMEN

The objective of this study is to determine whether middle-aged adults prescribed a low carbohydrate-high fat (LCHF) or low fat (LF) diet would have greater loss of central fat and to determine whether the insulin resistance (IR) affects intervention response. A total of 50 participants (52.3 ± 10.7 years old; 36.6 ± 7.4 kg/m2 BMI; 82% female) were prescribed either a LCHF diet (n = 32, carbohydrate: protein: fat of 5%:30%:65% without calorie restriction), or LF diet (n = 18, 63%:13-23%: 10-25% with calorie restriction of total energy expenditure-500 kcal) for 15 weeks. Central and regional body composition changes from dual-x-ray absorptiometry and serum measures were compared using paired t-tests and ANCOVA with paired contrasts. IR was defined as homeostatic model assessment (HOMA-IR) > 2.6. Compared to the LF group, the LCHF group lost more android (15.6 ± 11.2% vs. 8.3 ± 8.1%, p < 0.01) and visceral fat (18.5 ± 22.2% vs. 5.1 ± 15.8%, p < 0.05). Those with IR lost more android and visceral fat on the LCHF verses LF group (p < 0.05). Therefore, the clinical prescription to a LCHF diet may be an optimal strategy to reduce disease risk in middle-aged adults, particularly those with IR.


Asunto(s)
Dieta con Restricción de Grasas , Dieta Rica en Proteínas y Pobre en Hidratos de Carbono , Resistencia a la Insulina , Obesidad Abdominal/dietoterapia , Anciano , Composición Corporal , Índice de Masa Corporal , Restricción Calórica , Metabolismo Energético , Femenino , Humanos , Masculino , Persona de Mediana Edad , Obesidad Abdominal/sangre , Factores Sexuales , Pérdida de Peso
2.
J Cancer Educ ; 34(5): 1010-1013, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30043388

RESUMEN

Long-term follow-up is needed to evaluate the impact of short-term cancer research programs on the career trajectories of medical and graduate students. Participation in these programs may be crucial in fostering the next generation of cancer research scientists. This report presents the career outcomes and research productivity of 77 medical and public health students with 25 years of tracking data following their participation in a summer cancer research training program at the University of Alabama at Birmingham (UAB) in 1990-1998. Of 64 summer trainees with contact information, complete survey responses were received from 55 (86.0%) individuals. Over half reported clinical care of cancer patients and 18.2% stated that they were engaged in cancer research. Literature searches confirmed that 23.4% (18/77) of trainees have published cancer research papers. Future studies should explore the optimal timing of short-term post-baccalaureate academic cancer training experiences to identify participant characteristics and institutional factors that influence career choices and determine research productivity.


Asunto(s)
Investigación Biomédica/educación , Selección de Profesión , Oncología Médica/educación , Neoplasias/prevención & control , Estudiantes/psicología , Apoyo a la Formación Profesional/organización & administración , Adulto , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Humanos , Masculino , Encuestas y Cuestionarios , Apoyo a la Formación Profesional/métodos
3.
J Acad Nutr Diet ; 118(4): 714-723.e1, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-27988219

RESUMEN

BACKGROUND: Diet and obesity influence prostate cancer risk and progression-effects that may be mediated through the gut microbiome. OBJECTIVE: Our aim was to explore relationships among diet, gut microbes, and Gleason sum in overweight and obese prostate cancer patients enrolled in a presurgical weight-loss trial. DESIGN: Randomized controlled trial (NCT01886677) secondary analysis. PARTICIPANTS/SETTING: In 2013-2014, 40 prostate cancer patients in the southeastern United States were randomized and allocated equally to weight-loss and wait-list control arms while they awaited prostatectomy; stool samples were collected on a subset of 22 patients. INTERVENTION: Registered dietitian nutritionists and exercise physiologists provided semi-weekly in-person and telephone-based guidance on calorie-restricted diets and exercise to promote an approximate weight loss of 0.91 kg/wk. MAIN OUTCOME MEASURES: Baseline and follow-up 24-hour dietary recalls were conducted and analyzed (using the Automated Self-Administered 24-hour dietary recall system; National Cancer Institute, Bethesda, MD) for macronutrients, micronutrients, and food groups. Microbiome analysis targeting the V4 region of the 16S ribosomal RNA gene was performed on fecal samples. Biopsy Gleason sum data were accessed from diagnostic pathology reports. STATISTICAL ANALYSES PERFORMED: Associations between dietary factors and operational taxonomic units were determined by ß-diversity analysis. Wilcoxon signed rank, and Mann-Whitney U testing assessed within- and between-arm differences. Associations between Gleason sum and operational taxonomic units, and diet and operational taxonomic units, were analyzed using Spearman correlations. RESULTS: At baseline, Proteobacteria (median 0.06, interquartile range 0.01 to 0.16) were abundant, with four orders positively associated with Gleason sum. Gleason sum was associated with Clostridium (ρ=.579; P=0.005) and Blautia (ρ=-0.425, P=0.049). Increased red meat consumption from baseline was associated with Prevotella (ρ=-.497; P=0.018) and Blautia (ρ=.422; P=0.039). Men who increased poultry intake had decreased Clostridiales abundance (P=0.009). CONCLUSIONS: This hypothesis-generating study provides a starting point for investigating the relationships between the fecal microbiome, diet, and prostate cancer. Adequately powered studies are required to further explore and validate these findings.


Asunto(s)
Dieta Reductora/métodos , Microbioma Gastrointestinal , Obesidad/dietoterapia , Sobrepeso/dietoterapia , Neoplasias de la Próstata/microbiología , Heces/microbiología , Humanos , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Obesidad/complicaciones , Obesidad/microbiología , Sobrepeso/complicaciones , Periodo Preoperatorio , Prostatectomía , Neoplasias de la Próstata/etiología , Neoplasias de la Próstata/cirugía , Resultado del Tratamiento
4.
J Cancer Educ ; 33(3): 564-568, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-27734282

RESUMEN

A key outcome measure of cancer research training programs is the number of cancer-related peer-reviewed publications after training. Because program graduates do not routinely report their publications, staff must periodically conduct electronic literature searches on each graduate. The purpose of this study is to compare findings of an innovative computer-based automated search program versus repeated manual literature searches to identify post-training peer-reviewed publications. In late 2014, manual searches for publications by former R25 students identified 232 cancer-related articles published by 112 of 543 program graduates. In 2016, a research assistant was instructed in performing Scopus literature searches for comparison with individual PubMed searches on our 543 program graduates. Through 2014, Scopus found 304 cancer publications, 220 of that had been retrieved manually plus an additional 84 papers. However, Scopus missed 12 publications found manually. Together, both methods found 316 publications. The automated method found 96.2 % of the 316 publications while individual searches found only 73.4 %. An automated search method such as using the Scopus database is a key tool for conducting comprehensive literature searches, but it must be supplemented with periodic manual searches to find the initial publications of program graduates. A time-saving feature of Scopus is the periodic automatic alerts of new publications. Although a training period is needed and initial costs can be high, an automated search method is worthwhile due to its high sensitivity and efficiency in the long term.


Asunto(s)
Almacenamiento y Recuperación de la Información/métodos , Neoplasias/epidemiología , Revisión de la Investigación por Pares , Publicaciones Periódicas como Asunto/estadística & datos numéricos , Investigación/educación , Eficiencia , Humanos
5.
Br J Cancer ; 117(9): 1303-1313, 2017 Oct 24.
Artículo en Inglés | MEDLINE | ID: mdl-28881355

RESUMEN

BACKGROUND: Obesity is associated with aggressive prostate cancer. To explore whether weight loss favourably affects tumour biology and other outcomes, we undertook a presurgical trial among overweight and obese men with prostate cancer. METHODS: This single-blinded, two-arm randomised controlled trial explored outcomes of a presurgical weight loss intervention (WLI) that promoted ∼1 kg per week loss via caloric restriction and increased physical activity (PA). Forty overweight/obese men with clinically confirmed prostate cancer were randomised to the WLI presurgery or to a control arm; changes in weight, body composition, quality-of-life, circulating biomarkers, gene expression, and immunohistochemical markers in tumour and benign prostatic tissue were evaluated. RESULTS: The study period averaged 50 days. Mean (s.d.) change scores for the WLI vs control arms were as follows: weight: -4.7 (3.1) kg vs -2.2 (4.4) kg (P=0.0508); caloric intake: -500 (636) vs -159 (600) kcal per day (P=0.0034); PA: +0.9 (3.1) vs +1.7 (4.6) MET-hours per day (NS); vitality: +5.3 (7.l4) vs -1.8 (8.1) (P=0.0491); testosterone: +55.1 (86.0) vs -48.3 (203.7) ng dl-1 (P=0.0418); sex hormone-binding globulin: +14.0 (14.6) vs +1.8 (7.6) nmol l-1 (P=0.0023); and leptin: -2.16 (2.6) vs -0.03 (3.75) (P=0.0355). Follow-up Ki67 was significantly higher in WLI vs control arms; median (interquartile range): 5.0 (2.5,10.0) vs 0.0 (0.0,2.5) (P=0.0061) and several genes were upregulated, for example, CTSL, GSK3B, MED12, and LAMC2. CONCLUSIONS: Intentional weight loss shows mixed effects on circulating biomarkers, tumour gene expression, and proliferative markers. More study is needed before recommending weight loss, in particular rapid weight loss, among men with prostate cancer.


Asunto(s)
Biomarcadores de Tumor/sangre , Biomarcadores/sangre , Restricción Calórica , Células Neoplásicas Circulantes/metabolismo , Neoplasias de la Próstata/sangre , Pérdida de Peso , Anciano , Estudios de Seguimiento , Perfilación de la Expresión Génica , Humanos , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Células Neoplásicas Circulantes/patología , Obesidad/fisiopatología , Sobrepeso/fisiopatología , Pronóstico , Neoplasias de la Próstata/patología , Neoplasias de la Próstata/cirugía , Método Simple Ciego
6.
South Med J ; 110(3): 181-187, 2017 03.
Artículo en Inglés | MEDLINE | ID: mdl-28257542

RESUMEN

OBJECTIVES: The purpose of this investigation was to describe cancer survivorship based on the Behavioral Risk Factor Surveillance System (BRFSS) cancer survivorship modules in Alabama, Georgia, and Mississippi, conducted in 2012 and 2014, and to investigate disparities across the US Deep South region. METHODS: The optional BRFSS cancer survivorship module was introduced in 2009. Data from Alabama (2012), Georgia (2012), and Mississippi (2014) were assessed. Demographic factors were analyzed through weighted regression for risk of receiving cancer treatment summary information and follow-up care. RESULTS: Excluding nonmelanoma skin cancer cases, a total of 1105 adults in the Alabama 2012 survey, 571 adults in the Georgia 2012 survey, and 442 adults in the 2014 Mississippi survey reported ever having cancer and were available for analysis. Among Alabamians, those with a higher level of education (odds ratio [OR] 1.4, 95% confidence interval [CI] 1.1-1.7) and higher income (OR 1.3, 95% CI 1.1-1.6) were more likely to receive a written summary of their cancer treatments. Adults older than age 65 were only half as likely to receive a written summary of cancer treatments compared with adults 65 years or younger (OR 0.5, 95% CI 0.3-0.8). We found no significant differences in receipt of treatment summary by race or sex. Among those who reported receiving instructions from a doctor for follow-up care, these survivors tended to have a higher level of education, higher income, and were younger (younger than 65 years). Receipt of written or printed follow-up care was positively associated with higher income (OR 1.4, 95% CI 1.1-1.8) and inversely associated with age older than 65 years (OR 0.9, 95% CI 0.1-0.6) in Georgia. CONCLUSIONS: Addressing the gap identified between survivorship care plan development by the health team and the delivery of it to survivors is important given the evidence of disparities in the receipt of survivorship care plans across survivor age and socioeconomic status in the Deep South.


Asunto(s)
Neoplasias/epidemiología , Planificación de Atención al Paciente/estadística & datos numéricos , Adolescente , Adulto , Factores de Edad , Anciano , Alabama/epidemiología , Sistema de Vigilancia de Factor de Riesgo Conductual , Escolaridad , Femenino , Georgia/epidemiología , Humanos , Renta , Seguro de Salud/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Mississippi/epidemiología , Neoplasias/terapia , Sujetos de Investigación/estadística & datos numéricos , Adulto Joven
8.
BMC Cancer ; 16: 61, 2016 Feb 05.
Artículo en Inglés | MEDLINE | ID: mdl-26850040

RESUMEN

BACKGROUND: Obesity is associated with tumor aggressiveness and disease-specific mortality for more than 15 defined malignancies, including prostate cancer. Preclinical studies suggest that weight loss from caloric restriction and increased physical activity may suppress hormonal, energy-sensing, and inflammatory factors that drive neoplastic progression; however, exact mechanisms are yet to be determined, and experiments in humans are limited. METHODS: We conducted a randomized controlled trial among 40 overweight or obese, newly-diagnosed prostate cancer patients who elected prostatectomy to explore feasibility of a presurgical weight loss intervention that promoted a weight loss of roughly one kg. week(-1) via caloric restriction and physical activity, as well as to assess effects on tumor biology and circulating biomarkers. Measures of feasibility (accrual, retention, adherence, and safety) were primary endpoints. Exploratory aims were directed at the intervention's effect on tumor proliferation (Ki-67) and other tumor markers (activated caspase-3, insulin and androgen receptors, VEGF, TNFß, NFκB, and 4E-BP1), circulating biomarkers (PSA, insulin, glucose, VEGF, TNFß, leptin, SHBG, and testosterone), lymphocytic gene expression of corresponding factors and cellular bioenergetics in neutrophils, and effects on the gut microbiome. Consenting patients were randomized in a 1:1 ratio to either: 1) weight loss via a healthful, guidelines-based diet and exercise regimen; or 2) a wait-list control. While biological testing is currently ongoing, this paper details our methods and feasibility outcomes. RESULTS: The accrual target was met after screening 101 cases (enrollment rate: 39.6%). Other outcomes included a retention rate of 85%, excellent adherence (95%), and no serious reported adverse events. No significant differences by age, race, or weight status were noted between enrollees vs. non-enrollees. The most common reasons for non-participation were "too busy" (30%), medical exclusions (21%), and "distance" (16%). CONCLUSIONS: Presurgical trials offer a means to study the impact of diet and exercise interventions directly on tumor tissue, and other host factors that are feasible and safe, though modifications are needed to conduct trials within an abbreviated period of time and via distance medicine-based approaches. Pre-surgical trials are critical to elucidate the impact of lifestyle interventions on specific mechanisms that mediate carcinogenesis and which can be used subsequently as therapeutic targets. TRIAL REGISTRATION: NCT01886677.


Asunto(s)
Biomarcadores de Tumor/sangre , Restricción Calórica , Actividad Motora , Obesidad/terapia , Neoplasias de la Próstata/terapia , Adulto , Dieta , Humanos , Masculino , Persona de Mediana Edad , Células Neoplásicas Circulantes/patología , Obesidad/sangre , Obesidad/patología , Prostatectomía , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/patología , Neoplasias de la Próstata/cirugía , Pérdida de Peso/fisiología
9.
J Cancer Educ ; 31(1): 93-100, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25604064

RESUMEN

The efficacy of short-term cancer research educational programs in meeting its immediate goals and long-term cancer research career objectives has not been well studied. The purpose of this report is to describe the immediate impact on, and the long-term career outcomes of, 499 medical students and graduate students who completed the Cancer Research Experiences for Students (CaRES) program at the University of Alabama at Birmingham (UAB) from 1999 to 2013. In summer 2014, all 499 program alumni were located and 96.4 % (481 of 499) agreed to complete a longitudinal tracking survey. About 23 % of CaRES alumni (110 of 499) have published at least one cancer-related paper. Overall 238 cancer-related papers have been published by CaRES alumni, one third of this number being first-authored publications. Nearly 15 % (71 of 481 respondents) reported that their current professional activities include cancer research, primarily clinical research and outcomes research. Of these 71 individuals, 27 (38 %) have completed their training and 44 (62 %) remain in training. Of all respondents, 58 % reported that they administered care to cancer patients and 30 % reported other cancer-related professional responsibilities such as working with a health department or community group on cancer control activities. Of the 410 respondents not currently engaged in cancer research, 118 (29 %) stated intentions to conduct cancer research in the next few years. Nearly all respondents (99.6 %) recommended CaRES to today's students. Challenging short-term educational cancer research programs for medical students and graduate health professional students can help them refine and solidify their career plans, with many program alumni choosing cancer research careers.


Asunto(s)
Investigación Biomédica/educación , Selección de Profesión , Educación de Postgrado , Educación , Oncología Médica/educación , Evaluación de Programas y Proyectos de Salud , Estudiantes de Medicina , Humanos , Encuestas y Cuestionarios
10.
J Cancer Educ ; 31(1): 84-92, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25412722

RESUMEN

The need to familiarize medical students and graduate health professional students with research training opportunities that cultivate the appeal of research careers is vital to the future of research. Comprehensive evaluation of a cancer research training program can be achieved through longitudinal tracking of program alumni to assess the program's impact on each participant's career path and professional achievements. With advances in technology and smarter means of communication, effective ways to track alumni have changed. In order to collect data on the career outcomes and achievements of nearly 500 short-term cancer research training program alumni from 1999-2013, we sought to contact each alumnus to request completion of a survey instrument online, or by means of a telephone interview. The effectiveness of each contact method that we used was quantified according to ease of use and time required. The most reliable source of contact information for tracking alumni from the early years of the program was previous tracking results, and for alumni from the later years, the most important source of contact information was university alumni records that provided email addresses and telephone numbers. Personal contacts with former preceptors were sometimes helpful, as were generic search engines and people search engines. Social networking was of little value for most searches. Using information from two or more sources in combination was most effective in tracking alumni. These results provide insights and tools for other research training programs that wish to track their alumni for long-term program evaluation.


Asunto(s)
Investigación Biomédica/educación , Selección de Profesión , Educación de Postgrado , Educación , Oncología Médica/educación , Estudiantes de Medicina , Estudios de Cohortes , Comunicación , Humanos , Estudios Longitudinales , Evaluación de Programas y Proyectos de Salud , Encuestas y Cuestionarios
11.
Metabolism ; 63(10): 1257-64, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25125349

RESUMEN

OBJECTIVE: To determine if consumption of a reduced-carbohydrate (CHO) diet would result in preferential loss of adipose tissue under eucaloric conditions, and whether changes in adiposity were associated with changes in postprandial insulin concentration. METHODS: In a crossover-diet intervention, 30 women with PCOS consumed a reduced-CHO diet (41:19:40% energy from CHO:protein:fat) for 8 weeks and a standard diet (55:18:27) for 8 weeks. Body composition by DXA and fat distribution by CT were assessed at baseline and following each diet phase. Insulin AUC was obtained from a solid meal test (SMT) during each diet phase. RESULTS: Participants lost 3.7% and 2.2% total fat following the reduced-CHO diet and STD diet, resp. (p<0.05 for difference between diets). The reduced-CHO diet induced a decrease in subcutaneous-abdominal, intra-abdominal, and thigh-intermuscular adipose tissue (-7.1%, -4.6%, and -11.5%, resp.), and the STD diet induced a decrease in total lean mass. Loss of fat mass following the reduced CHO diet arm was associated with lower insulin AUC (p<0.05) during the SMT. CONCLUSIONS: In women with PCOS, consumption of a diet lower in CHO resulted in preferential loss of fat mass from metabolically harmful adipose depots, whereas a diet high in CHO appeared to promote repartitioning of lean mass to fat mass.


Asunto(s)
Tejido Adiposo/metabolismo , Tejido Adiposo/fisiología , Composición Corporal/fisiología , Carbohidratos de la Dieta/metabolismo , Síndrome del Ovario Poliquístico/metabolismo , Síndrome del Ovario Poliquístico/fisiopatología , Adulto , Estudios Cruzados , Dieta Reductora/métodos , Femenino , Humanos , Insulina/metabolismo , Periodo Posprandial/fisiología
12.
Med Sci Sports Exerc ; 46(7): 1375-83, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24389524

RESUMEN

UNLABELLED: While moderate- to vigorous-intensity physical activities (MVPA) confer the greatest health benefits, evidence suggests that light-intensity activities are also beneficial, particularly for older adults and individuals with moderate to severe comorbidities. PURPOSE: To examine cross-sectional and longitudinal associations between light-intensity activity and physical function in older cancer survivors at increased risk for age- and treatment-related comorbidities, including accelerated functional decline. METHODS: The analysis included data from 641 breast, prostate, and colorectal cancer survivors (54% female) age 65 yr and older who participated in a 1-yr home-based diet and exercise intervention designed to reduce the rate of physical function decline. ANCOVA was used to compare means of physical function across levels of PA intensity (low-light [LLPA]: 1.5-2.0 METs; high-light [HLPA]: 2.1-2.9 METs; MVPA: ≥3.0 METs). RESULTS: In cross-sectional analyses, increasing tertiles of light-intensity activity were associated with higher scores for all three measures of physical function (all P values <0.005), after adjusting for age, sex, body mass index, comorbidity, symptoms, and MVPA. Associations were stronger for HLPA than for LLPA. Compared with survivors who had decreased MVPA or maintained stable MVPA and HLPA at the postintervention follow-up, those who had increased HLPA, but had decreased MVPA or maintained stable MVPA, reported higher physical function scores (LS means [95% confidence interval]: SF-36 Physical Function Subscale: -5.58 [-7.96 to -3.20] vs -2.54 [-5.83 to 0.75], P = 0.14; Basic Lower Extremity Function: -2.00 [-3.45 to -0.55] vs 0.28 [-1.72 to 2.28], P = 0.07; Advanced Lower Extremity Function: -2.58 [-4.00 to -1.15] vs 0.44 [-1.52 to 2.40], P = 0.01). CONCLUSIONS: Our findings suggest that increasing light-intensity activities, especially HLPA, may be a viable approach to reducing the rate of physical function decline in individuals who are unable or reluctant to initiate or maintain adequate levels of moderate-intensity activities.


Asunto(s)
Terapia por Ejercicio , Neoplasias , Obesidad/terapia , Sobrevivientes , Anciano , Anciano de 80 o más Años , Estudios Transversales , Dieta Reductora , Femenino , Humanos , Estudios Longitudinales , Masculino
13.
J Cancer Educ ; 29(1): 188-93, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24132542

RESUMEN

The Alabama Comprehensive Cancer Control Coalition (ACCCC) has developed an integrated and coordinated approach to reducing cancer incidence, morbidity, and mortality, and to improving the quality of life for cancer survivors, their families, and their caregivers. The ACCCC is currently in a maintenance phase and a formal plan for sustainability of the coalition was needed to keep the members engaged and productive. A training session in coalition sustainability conducted in 2013 identified the following elements as essential to success: (1) increased marketing of the coalition by simplifying its mission; (2) improved networking including flexibility in coalition meeting location and attendance; (3) increased membership satisfaction through transformational leadership; (4) revision of the working structure of committees and improved accountability; and (5) enhancement of partner satisfaction with coalition activities designed to recruit and retain new partners. A self-administered membership satisfaction survey was given to assess coalition mission, meeting logistics, organization, capacity building, and coalition goals. Results indicated that the subcategories of communication, mission, and meeting logistics were rated satisfied to very satisfied on a five-point scale. Although the ACCCC had clearly written goals, improvement could be made in leadership participation and new member orientation could be improved. Most members rated their parent organization as highly involved with the ACCCC and many offered suggestions on capacity building. Results of the sustainability training have clarified the ACCCC's plans to ensure coalition viability and improve strategies to inform stakeholders of the benefits of participation in the coalition.


Asunto(s)
Federación para Atención de Salud/organización & administración , Liderazgo , Neoplasias/prevención & control , Garantía de la Calidad de Atención de Salud/organización & administración , Alabama , Creación de Capacidad , Humanos , Neoplasias/diagnóstico , Desarrollo de Programa , Gobierno Estatal
14.
Clin Endocrinol (Oxf) ; 79(4): 550-7, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23444983

RESUMEN

OBJECTIVE: Diet-induced reduction in circulating insulin may be an attractive nonpharmacological treatment for women with polycystic ovary syndrome (PCOS) among whom elevated insulin may exacerbate symptoms by stimulating testosterone synthesis. This study was designed to determine whether a modest reduction in dietary carbohydrate (CHO) content affects ß-cell responsiveness, serum testosterone concentration and insulin sensitivity in women with PCOS. DESIGN: In a crossover design, two diets ('Standard,' STD, 55:18:27% energy from carbohydrate/protein/fat; lower-carbohydrate, 41:19:40) were provided for 8 weeks in random order with a 4-week washout between. PATIENTS: Thirty women with PCOS. MEASUREMENTS: ß-cell responsiveness assessed as the C-peptide response to glucose during a liquid meal test; insulin sensitivity from insulin and glucose values throughout the test; insulin resistance (HOMA-IR); and total testosterone by immunoassay. RESULTS: Paired t-test indicated that the lower-CHO diet induced significant decreases in basal ß-cell response (PhiB), fasting insulin, fasting glucose, HOMA-IR, total testosterone and all cholesterol measures, and significant increases in insulin sensitivity and dynamic ('first-phase') ß-cell response. The STD diet induced a decrease in HDL-C and an increase in the total cholesterol-to-HDL-C ratio. Across all data combined, the change in testosterone was positively associated with the changes in fasting insulin, PhiB and insulin AUC (P < 0·05). CONCLUSIONS: In women with PCOS, modest reduction in dietary CHO in the context of a weight-maintaining diet has numerous beneficial effects on the metabolic profile that may lead to a decrease in circulating testosterone.


Asunto(s)
Carbohidratos de la Dieta/administración & dosificación , Células Secretoras de Insulina/metabolismo , Insulina/metabolismo , Síndrome del Ovario Poliquístico/dietoterapia , Adulto , Glucemia/metabolismo , Estudios Cruzados , Ayuno/sangre , Femenino , Humanos , Insulina/sangre , Resistencia a la Insulina , Lípidos/sangre , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Síndrome del Ovario Poliquístico/sangre , Testosterona/sangre , Adulto Joven
15.
Acta Oncol ; 52(6): 1110-8, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23438359

RESUMEN

BACKGROUND: Cancer survivors are at increased risk for second malignancies, cardiovascular disease, diabetes, and functional decline. Evidence suggests that a healthful diet and physical activity may reduce the risk of chronic disease and improve health in this population. METHODS: We conducted a feasibility study to evaluate a vegetable gardening intervention that paired 12 adult and child cancer survivors with Master Gardeners to explore effects on fruit and vegetable intake, physical activity, quality-of-life, and physical function. Throughout the year-long study period, the survivor-Master Gardener dyads worked together to plan/plant three gardens, harvest/rotate plantings, and troubleshoot/correct problems. Data on diet, physical activity, and quality-of-life were collected via surveys; anthropometrics and physical function were objectively measured. Acceptability of the intervention was assessed with a structured debriefing survey. RESULTS: The gardening intervention was feasible (robust enrollment; minimal attrition) and well-received by cancer survivors and Master Gardeners. Improvement in three of four objective measures of strength, agility, and endurance was observed in 90% of survivors, with the following change scores [median (interquartile range)] noted between baseline and one-year follow-up: hand grip test [+ 4.8 (3.0, 6.7) kg], 2.44 meter Get-Up-and-Go [+ 1.0 (+ 1.8, + 0.2) seconds], 30-second chair stand [+ 3.0 (+ 1.0, 5.0) stands], and six-minute walk [+ 11.6 (6.1, 48.8) meters]. Increases of ≥ 1 fruit and vegetable serving/day and ≥ 30 minutes/week of physical activity were observed in 40% and 60%, respectively. CONCLUSION: These preliminary results support the feasibility and acceptability of a mentored gardening intervention and suggest that it may offer a novel and promising strategy to improve fruit and vegetable consumption, physical activity, and physical function in cancer survivors. A larger randomized controlled trial is needed to confirm our results.


Asunto(s)
Dieta , Ejercicio Físico , Jardinería , Neoplasias/rehabilitación , Sobrevivientes , Estudios de Factibilidad , Humanos , Neoplasias/psicología , Sobrevivientes/psicología
16.
J Nutr Educ Behav ; 45(4): 314-21, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23433966

RESUMEN

OBJECTIVES: Determine whether self-efficacy independently predicted weight loss in a behavioral intervention and explore factors that influence the path between self-efficacy and weight change. DESIGN: Secondary analysis of the PREMIER trial, a randomized controlled trial testing effects of lifestyle interventions on blood pressure. SETTING: Four academic medical centers. PARTICIPANTS: PREMIER recruited adults (n = 810) with pre-hypertension/stage 1 hypertension, not currently receiving medication. This analysis excluded participants in the control arm, resulting in n = 537. INTERVENTIONS: Participants were randomly assigned to 1 of 3 groups: advice only, established lifestyle recommendations, or established lifestyle recommendations plus Dietary Approaches to Stop Hypertension dietary pattern. MAIN OUTCOME MEASURES: Self-efficacy (dietary self-efficacy [DSE], exercise self-efficacy [ESE]), dietary intake, fitness. ANALYSIS: Pearson correlations, 1-way analysis of variance, mediation analyses. RESULTS: Despite an overall decrease in DSE/ESE, change in DSE/ESE significantly predicted weight change at 6 (ß = -.21, P < .01; ß = -.19, P < .01, respectively) and 18 months (ß = -.19, P < .01; ß = -.35, P < .01). Change in percent calories from fat partially mediated the DSE/weight change relationship at 6 months. Change in fitness partially mediated the ESE/weight change relationship at 18 months. CONCLUSIONS AND IMPLICATIONS: Changes in DSE/ESE were not associated with behavior change as hypothesized. Additional research is needed to identify mediators between self-efficacy and adoption of behaviors that influence weight loss.


Asunto(s)
Conductas Relacionadas con la Salud , Obesidad/psicología , Autoeficacia , Pérdida de Peso , Adulto , Análisis de Varianza , Estudios de Cohortes , Femenino , Humanos , Estilo de Vida , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios
17.
J Cutan Pathol ; 39(6): 603-9, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22575025

RESUMEN

BACKGROUND: CD147 is upregulated in multiple cancer types, but its expression in advanced cutaneous squamous cell carcinoma (SCC) is unknown. Our purpose was to evaluate the expression patterns of CD147 and related monocarboxylate transporters (MCT1, MCT4) to determine their correlation with survival. METHODS: This is a retrospective cohort study of patients with advanced stage cutaneous SCC of the head and neck who presented to a tertiary care center between 1998 and 2006 (n=50). CD147, MCT1 and MCT4 expression levels were assessed using immunofluorescence analysis of archived tumor samples and correlated with survival and clinicopathologic characteristics. RESULTS: The majority of patients (92%, n = 46) were diagnosed with stage III disease, with 46% (n = 23) having positive regional lymph node metastasis and 8% (n = 4) with distant metastasis. Primary malignancies had an overexpression of CD147 (78%; n = 35), MCT1 (23%; n = 10) and MCT4 (47%; n = 20). In addition, there was a significant relationship between the overexpression of CD147 and node positive disease (p = 0.048). Two- and five-year survival rates were 69 and 61%, respectively. There was a trend toward decreased survival in patients with overexpression of CD147 (p = 0.17), MCT1 (p = 0.11) and MCT4 (p = 0.15). CONCLUSION: CD147 may represent a biomarker or potential therapeutic target in advanced cutaneous SCC.


Asunto(s)
Basigina/biosíntesis , Biomarcadores de Tumor/biosíntesis , Carcinoma de Células Escamosas/metabolismo , Regulación Neoplásica de la Expresión Génica , Neoplasias de Cabeza y Cuello/metabolismo , Proteínas de Neoplasias/biosíntesis , Neoplasias Cutáneas/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/terapia , Supervivencia sin Enfermedad , Femenino , Neoplasias de Cabeza y Cuello/mortalidad , Neoplasias de Cabeza y Cuello/patología , Neoplasias de Cabeza y Cuello/terapia , Humanos , Masculino , Persona de Mediana Edad , Transportadores de Ácidos Monocarboxílicos/biosíntesis , Proteínas Musculares/biosíntesis , Metástasis de la Neoplasia , Estudios Retrospectivos , Neoplasias Cutáneas/mortalidad , Neoplasias Cutáneas/patología , Neoplasias Cutáneas/terapia , Tasa de Supervivencia , Simportadores/biosíntesis , Regulación hacia Arriba
18.
J Cancer Educ ; 27(3): 478-85, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22528631

RESUMEN

This Alabama statewide cancer control plan for 2011-2015 seeks to build on the successes of two previous 5-year plans while developing new objectives that address cancer disparities and cancer prevention over the entire lifespan. The approach to defining objectives for this Plan was systematic and sought input from all members of the Alabama Comprehensive Cancer Control Coalition (ACCCC). The Plan that was fashioned is based on input from academic medical centers, private physicians, government agencies, regulatory agencies, health societies, private citizens, and cancer survivors, all of whom are active Coalition members who exchange information, opinions, and knowledge from their respective points of view. The Plan could not have taken shape without the full input of health professionals, statisticians, graduate students, former patients, and concerned citizens; it is truly an example of the synergy of professional, public, and patient education.


Asunto(s)
Educación en Salud/organización & administración , Neoplasias/prevención & control , Alabama , Implementación de Plan de Salud , Humanos , Comunicación Interdisciplinaria , Relaciones Interinstitucionales , Educación del Paciente como Asunto/organización & administración , Políticas , Desarrollo de Programa
19.
Clin Exp Metastasis ; 29(4): 315-25, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22241150

RESUMEN

Morbidity and mortality of breast cancer patients are drastically increased when primary tumor cells are able to spread to distant sites and proliferate to become secondary lesions. Effective treatment of metastatic disease has been limited; therefore, an increased molecular understanding to identify biomarkers and therapeutic targets is needed. Breast cancer metastasis suppressor 1 (BRMS1) suppresses development of pulmonary metastases when expressed in a variety of cancer types, including metastatic mammary carcinoma. Little is known of Brms1 function throughout the initiation and progression of mammary carcinoma. The goal of this study was to investigate mechanisms of Brms1-mediated metastasis suppression in transgenic mice that express Brms1 using polyoma middle T oncogene-induced models. Brms1 expression did not significantly alter growth of the primary tumors. When expressed ubiquitously using a ß-actin promoter, Brms1 suppressed pulmonary metastasis and promoted apoptosis of tumor cells located in the lungs but not in the mammary glands. Surprisingly, selective expression of Brms1 in the mammary gland using the MMTV promoter did not significantly block metastasis nor did it promote apoptosis in the mammary glands or lung, despite MMTV-induced expression within the lungs. These results strongly suggest that cell type-specific over-expression of Brms1 is important for Brms1-mediated metastasis suppression.


Asunto(s)
Apoptosis/genética , Regulación Neoplásica de la Expresión Génica , Neoplasias Mamarias Animales/genética , Neoplasias Mamarias Animales/patología , Metástasis de la Neoplasia/genética , Proteínas Represoras/genética , Animales , Femenino , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patología , Neoplasias Pulmonares/secundario , Ratones , Ratones Endogámicos C57BL , Ratones Transgénicos , Metástasis de la Neoplasia/patología , Regiones Promotoras Genéticas/genética , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa
20.
Obesity (Silver Spring) ; 20(4): 715-20, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21527894

RESUMEN

Changes in markers of inflammation (MOI) and fat distribution with weight loss between African-American (AA) and white (W) women have yet to be characterized. The purpose of this study was to examine potential ethnic differences in MOI and regional fat distribution with weight loss, and identify the associations between these markers and changes in regional fat distribution with weight loss among AA and W women. Subjects were 126 healthy, premenopausal women, BMI 27-30 kg/m(2). They were placed on a weight-loss intervention consisting of diet and/or exercise until a BMI <25 was achieved. Fat distribution was measured with computed tomography, and body composition with dual-energy X-ray absorptiometry. Serum concentrations of tumor necrosis factor-α (TNF-α), soluble TNF receptor-I (sTNFR-I), sTNFR-II, C-reactive protein (CRP), and interleukin-6 (IL-6) were assessed. All MOI and adiposity measures significantly decreased with weight loss. Significant ethnic differences with weight loss were observed for fat mass, body fat, intra-abdominal adipose tissue (IAAT), sTNFR-I, and sTNFR-II. Mixed-model analysis indicated that adjusting for change in IAAT explained ethnic differences in change in TNF-α and the decrease in TNF-α with weight loss, while total fat mass only explained the decrease in sTNFR-I and sTNFR-II with weight loss. In conclusion, all MOI decreased following weight loss among W, whereas only IL-6 and CRP decreased following weight loss in AA. The most distinct phenotypic difference observed was a greater impact of weight loss on TNF-α in W compared to AA, which was directly associated with IAAT in W.


Asunto(s)
Negro o Afroamericano , Proteína C-Reactiva/metabolismo , Interleucina-6/sangre , Obesidad/sangre , Receptores Tipo II del Factor de Necrosis Tumoral/sangre , Receptores Tipo I de Factores de Necrosis Tumoral/sangre , Factor de Necrosis Tumoral alfa/sangre , Pérdida de Peso , Población Blanca , Absorciometría de Fotón , Adulto , Biomarcadores/sangre , Composición Corporal , Distribución de la Grasa Corporal , Índice de Masa Corporal , Femenino , Humanos , Inflamación/sangre , Inflamación/etnología , Obesidad/etnología , Pérdida de Peso/etnología
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...