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Background: Heat shock protein 60 (HSP60), a potentially homeostatic antigen, is involved in physiological and non-physiological conditions. Experimental data support the role of HSP60 in placental and mitochondrial steroidogenesis. Furthermore, HSP60 is translocated into the endothelial-cell plasma membrane and the extracellular space under stress conditions, promoting the atherosclerotic process. Therefore, we investigated the association between HSP60 and endothelial function in postmenopausal women, considering the possible atherogenic effect of androgenic hormones. Methods: This study included 123 healthy postmenopausal women. Exclusion criteria were treated hypertension or dyslipidaemia, menopause hormone therapy during the last 6 months, and previously diagnosed peripheral vascular disease or cardiovascular disease. Fasting venous blood samples were obtained for biochemical and hormonal assessment and evaluation of HSP60. Sonographic assessment of flow-mediated dilation (FMD) occurred immediately after that in one session. Results: Univariate analysis showed that women with FMD values below median 5.12% had lower logHSP60 values (low vs. high FMD, HSP60 values: 2.01 ± 1.16 ng/ml vs. 3.22 ± 1.17 ng/ml, p-value = 0.031). Multivariable analysis showed that logHSP60 was associated with FMD (b-coefficient = 0.171, p-value = 0.046), adjusting for traditional cardiovascular risk factors (TRFs) and insulin levels. Further adjustment for testosterone and DHEAS rendered the result non-significant. In the multivariable analysis, FMD was associated with insulin (b-coefficient = -0.166, p-value = 0.034), testosterone (b-coefficient = -0.165, p-value = 0.034), DHEAS (b-coefficient = -0.187, p-value = 0.017), adjusting for TRFs. Discussion: The results of this study indicate that the association between androgens and endothelial function is possibly mediated by HSP60 molecules, in women with low insulin resistance and androgenicity. Further prospective studies are needed to explore the significance of our findings.
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To evaluate the effectiveness of a structured education program on lifestyle habits, which is also incorporating teaching on deep breathing, progressive muscle relaxation, and guided visualization, in the control of various components of the climacteric symptomatology in peri- and postmenopausal women. Sixty-one women aged 40-65 years with varying climacteric and stress symptoms were included in this study. Women were randomly assigned to the intervention group (31) or the control group (30). The intervention group followed an 8-week stress management program. The following parameters were assessed at baseline and at the end of the 8-week follow-up period in both groups: climacteric symptoms (Green Climacteric Scale (GCS)), sleep quality (Pittsburg Sleep Quality Index (PSQI)), mood status (Depression-Anxiety-Stress Scale), self-esteem (Rosenberg Self-esteem Scale), and health-related control (health locus of control (HLC)). A mixed-model ANOVA showed significant time × group × GCS interaction (within subjects: F = 23.830, p value<0.001; between subjects: F = 39.078, p value<0.001). With regard to HLC, there was a non-significant between subjects but a significant within-subjects effect (HLC × group × time, F = 3.848, p value = 0.024). Regarding DASS scores, there was a significant between-subjects' effect (F = 10.258, p value = 0.003) but a non-significant within-subjects' effect. With regard to PSQI, the analysis showed significant within-subjects' effects (PSQI × group × time: F = 4.691, p value = 0.003) and non-significant between-subjects' effects (F = 0.022, p = 0.883). Finally, regarding RSS, there was a significant within-subjects' (RSS × group × time, F = 4.183, p value = 0.029) but non-significant between-subjects' effect (F = 1.582, p value = 0.213). Stress management may offer an alternative approach to the management of climacteric symptoms.
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Climaterio , Posmenopausia , Femenino , Humanos , MenopausiaRESUMEN
BACKGROUND: Accumulating evidence suggests that circulating amyloidß 1-40 (Αß1-40), a proatherogenic aging peptide, may serve as a novel biomarker in cardiovascular disease (CVD). We aimed to explore the role of plasma Αß1-40 and its patterns of change over time in atherosclerosis progression in postmenopausal women, a population with substantial unrecognized CVD risk beyond traditional risk factors (TRFs). METHODS: In this prospective study, Αß1-40 was measured in plasma by enzyme-linked immunosorbent assay and atherosclerosis was assessed using carotid high-resolution ultrasonography at baseline and after a median follow-up of 28.2 months in 152 postmenopausal women without history or symptoms of CVD. RESULTS: At baseline, high Αß1-40 was independently associated with higher carotid bulb intima-media thickness (cbIMT) and the sum of maximal wall thickness in all carotid sites (sumWT) (p < 0.05). Αß1-40 levels increased over time and were associated with decreasing renal function (p < 0.05 for both). Women with a pattern of increasing or persistently high Αß1-40 levels presented accelerated progression of cbIMT and maximum carotid wall thickness and sumWT (p < 0.05 for all) after adjustment for baseline Αß1-40 levels, TRFs, and renal function. CONCLUSION: In postmenopausal women, a pattern of increasing or persistently high Αß1-40 was associated with the rate of progression of subclinical atherosclerosis irrespective of its baseline levels. These findings provide novel insights into a link between Αß1-40 and atherosclerosis progression in menopause and warrant further research to clarify the clinical value of monitoring its circulating levels as an atherosclerosis biomarker in women without clinically overt CVD.
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Péptidos beta-Amiloides/sangre , Aterosclerosis/epidemiología , Biomarcadores/sangre , Grosor Intima-Media Carotídeo/estadística & datos numéricos , Riñón/metabolismo , Menopausia/fisiología , Fragmentos de Péptidos/sangre , Adulto , Anciano , Estudios de Cohortes , Progresión de la Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Estudios ProspectivosRESUMEN
OBJECTIVE: The association between adipokine dysregulation and weight loss of patients with anorexia nervosa (AN) has been long investigated, in search of a causal relationship. We sought to: a) synthesize the available evidence on potential differences between AN patients and controls with regards to adipokine measurements (namely, leptin, adiponectin, resistin, soluble leptin receptor, visfatin, vaspin and omentin), b) estimate the potential differences between constitutionally thin (CT) subjects and AN patients, and c) present the available evidence with regards to biomarker efficacy of adipokines in AN. METHODS: A structured literature search, last updated in 2/2019, was conducted in the following databases: MEDLINE, clinicaltrials.gov, PsycINFO, PSYNDEX and WHO Registry Network. The primary outcome was the standardized mean difference of each adipokine between AN patients and controls of normal BMI. Secondary outcomes included the correlation of leptin with BMI and bone mineral density among AN patients. The study protocol is published in PROSPERO (CRD42018116767). RESULTS: In a total of 622 screened studies, after exclusion of non-relevant articles and duplicates, 84 reports on leptin, 31 reports on adiponectin, 12 on resistin, 10 on soluble leptin receptor, 5 on visfatin, 3 on vaspin and omentin were finally included in the meta-analysis. Publication bias assessment underlined the possibility of non-significant studies being underrepresented; still, significant heterogeneity renders this statement inconclusive. Leptin [ELISA: SMD (95% CI): -3.03 (-4, -2.06)], radioimmunoassay [RIA: -3.84 (-4.71, -2.98)] and resistin [-1.67 (-2.85, -0.48)] were significantly lower in patients with AN compared with controls, whereas visfatin decrease did not reach significance (-2.03 (-4.38, 0.3). Mean adiponectin, vaspin and soluble leptin receptor levels were significantly higher. In subgroup analysis, a significantly attenuated SMD was reported in ELISA studies compared with RIA studies. Leptin was significantly lower in AN patients compared to CT subjects and BMI marginally did not appear to confound the result. In all analyses, except for the correlation of leptin with BMI in AN patients, high heterogeneity was present. Meta-regression analysis indicated a potential confounding action of controls' BMI and age on leptin SMD and between-assay differences. Publication bias assessment underlined the possibility of nonsignificant studies being underrepresented; still, further investigation did not corroborate this and significant heterogeneity renders this statement inconclusive. CONCLUSION: A distinct profile of adipokine dysregulation is apparent in AN patients, following the anticipated pattern of low BMI. A precise estimation of the magnitude is hindered by heterogeneity, partly caused by varying assays and methodologies. Interestingly, while mean leptin levels are lower in AN subjects compared with constitutionally thin women, there is an overlap in individual levels between the two groups and therefore, they cannot be used to differentiate between these states.
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Adiponectina/metabolismo , Anorexia Nerviosa/metabolismo , Leptina/metabolismo , Receptores de Leptina/metabolismo , Resistina/metabolismo , Serpinas/metabolismo , Delgadez/metabolismo , Femenino , HumanosRESUMEN
OBJECTIVES: To explore the mediating role of measures of persuasion in the relationship between risk perceptions and intentions. METHODS: The first study included 413 obese subjects (mean age = 45.3 years); the second study, 781 overweight subjects (mean age = 46.6 years). All measures were assessed by self-report. RESULTS: Feelings and intervention judgments were mediators in the relationship between risk perceptions and intention to eat healthier, do more physical activity (study 1) and intention to reduce saturated fat (study 2). Feelings was the only mediator in the relationship between risk perceptions and intention to stop smoking (study 1). CONCLUSIONS: Future interventions targeting risk perceptions to increase intentions are likely to be more effective if subjects find the information emotionally impactful, credible, and engaging.
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Emociones , Intención , Juicio , Obesidad/psicología , Sobrepeso/psicología , Medición de Riesgo , Adulto , Femenino , Conductas Relacionadas con la Salud , Conocimientos, Actitudes y Práctica en Salud , Humanos , Masculino , Persona de Mediana Edad , Cese del Hábito de Fumar/psicologíaRESUMEN
OBJECTIVE: The present study aimed to advance our understanding of health-related theory, that is, the alleged intention-behavior gap in an obese population. It examined the mediating effects of planning on the intention-behavior relationship and the moderated mediation effects of age, self-efficacy and intentions within this relationship. METHOD: The study was conducted over a five-week period. Complete data from 571 obese participants were analyzed. The moderated mediation hypothesis was conducted using multiple-regression analysis. To test our theoretical model, intentions (Week 2), action self-efficacy (Week 2), maintenance self-efficacy (Week 5), planning (Week 5), and saturated-fat intake (Weeks 1 and 5) were measured by self-report. RESULTS: As hypothesized, planning mediated the intention-behavior relationship for perceived (two-item scale) and percentage-saturated-fat intake (measured by a food frequency questionnaire). Age, self-efficacy, and intention acted as moderators in the above mediation analysis. In specific, younger individuals, those with stronger intention, and people with higher levels of maintenance self-efficacy at higher levels of planning showed greater reductions in their perceived saturated-fat intake. CONCLUSIONS: For successful behavior change, knowledge of its mediators and moderators is needed. Future interventions targeting planning to change saturated-fat intake should be guided by people's intentions, age, and self-efficacy levels.
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Grasas de la Dieta , Conducta Alimentaria , Intención , Obesidad/psicología , Autoeficacia , Adulto , Factores de Edad , Terapia Conductista , Enfermedades Cardiovasculares/epidemiología , Femenino , Conductas Relacionadas con la Salud , Humanos , Masculino , Persona de Mediana Edad , Negociación , Educación del Paciente como Asunto , Percepción , Riesgo , AutoinformeRESUMEN
BACKGROUND: A healthy diet, low in saturated fat and high in fiber, is a popular medical recommendation in preventing cardiovascular disease (CVD). One approach to motivating healthier eating is to raise individuals' awareness of their CVD risk and then help them form specific plans to change. OBJECTIVES: The aim was to explore the combined impact of a Web-based CVD risk message and a fully automated planning tool on risk perceptions, intentions, and saturated fat intake changes over 4 weeks. METHODS: Of the 1187 men and women recruited online, 781 were randomly allocated to one of four conditions: a CVD risk message, the same CVD risk message paired with planning, planning on its own, and a control group. All outcome measures were assessed by online self-reports. Generalized linear modeling was used to analyze the data. RESULTS: Self-perceived consumption of low saturated fat foods (odds ratio 11.40, 95% CI 1.86-69.68) and intentions to change diet (odds ratio 21.20, 95% CI 2.6-172.4) increased more in participants allocated to the planning than the control group. No difference was observed between the four conditions with regard to percentage saturated fat intake changes. Contrary to our expectations, there was no difference in perceived and percentage saturated fat intake change between the CVD risk message plus planning group and the control group. Risk perceptions among those receiving the CVD risk message changed to be more in line with their age (change in slope(individual) = 0.075, P = .01; change in slope(comparative) = 0.100, P = .001), whereas there was no change among those who did not receive the CVD risk message. CONCLUSION: There was no evidence that combining a CVD risk message with a planning tool reduces saturated fat intake more than either alone. Further research is required to identify ways in which matching motivational and volitional strategies can lead to greater behavior changes.
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Internet , Obesidad/dietoterapia , Conducta de Reducción del Riesgo , Adulto , Enfermedades Cardiovasculares/prevención & control , Comunicación , Dieta con Restricción de Grasas , Grasas de la Dieta/administración & dosificación , Fibras de la Dieta/administración & dosificación , Femenino , Humanos , Masculino , Persona de Mediana Edad , Motivación , Obesidad/complicaciones , Obesidad/psicología , Percepción , Factores de RiesgoRESUMEN
BACKGROUND: Forming specific health plans can help translate good intentions into action. Mobile text reminders can further enhance the effects of planning on behavior. OBJECTIVE: Our aim was to explore the combined impact of a Web-based, fully automated planning tool and mobile text reminders on intention to change saturated fat intake, self-reported saturated fat intake, and portion size changes over 4 weeks. METHODS: Of 1013 men and women recruited online, 858 were randomly allocated to 1 of 3 conditions: a planning tool (PT), combined planning tool and text reminders (PTT), and a control group. All outcome measures were assessed by online self-reports. Analysis of covariance was used to analyze the data. RESULTS: Participants allocated to the PT (mean(saturatedfat) 3.6, mean(copingplanning) 3) and PTT (mean(saturatedfat) 3.5, mean(copingplanning) 3.1) reported a lower consumption of high-fat foods (F(2,571) = 4.74, P = .009) and higher levels of coping planning (F(2,571) = 7.22, P < .001) than the control group (mean(saturatedfat) 3.9, mean(copingplanning) 2.8). Participants in the PTT condition also reported smaller portion sizes of high-fat foods (mean 2.8; F(2,569) = 4.12, P = .0) than the control group (mean(portions) 3.1). The reduction in portion size was driven primarily by the male participants in the PTT (P = .003). We found no significant group differences in terms of percentage saturated fat intake, intentions, action planning, self-efficacy, or feedback on the intervention. CONCLUSIONS: These findings support the use of Web-based tools and mobile technologies to change dietary behavior. The combination of a fully automated Web-based planning tool with mobile text reminders led to lower self-reported consumption of high-fat foods and greater reductions in portion sizes than in a control condition. TRIAL REGISTRATION: International Standard Randomized Controlled Trial Number (ISRCTN): 61819220; http://www.controlled-trials.com/ISRCTN61819220 (Archived by WebCite at http://www.webcitation.org/63YiSy6R8).
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Internet , Sobrepeso/dietoterapia , Envío de Mensajes de Texto , Programas de Reducción de Peso/métodos , Adaptación Psicológica , Adulto , Grasas de la Dieta/administración & dosificación , Femenino , Conductas Relacionadas con la Salud , Humanos , Masculino , Persona de Mediana Edad , Sobrepeso/psicología , Autoeficacia , TelemedicinaRESUMEN
BACKGROUND: Although percentage risk formats are commonly used to convey cardiovascular disease (CVD) risk, people find it difficult to understand these representations. AIMS: To compare the impact of providing a CVD risk message in either a traditional format (% risk) or using an analogy of risk (Heart-Age) on participants' risk perceptions and intention to make lifestyle changes. METHODS: Four hundred and thirteen men and women were randomly allocated to one of two conditions; CVD risk as a percentage or as a Heart-Age score (a cardiovascular risk adjusted age). RESULTS: There was a graded relationship between perceived and actual CVD risk only in those participants receiving a Heart-Age message (P<0.05). Heart-Age was more emotionally impactful in younger individuals at higher actual CVD risk (P<0.01). Self-reported emotional reactions further mediated the relationship between risk perception and intention to make lifestyle changes. CONCLUSION: This study found that the Heart-Age message significantly differed from percentage CVD risk score in risk perceptions and was more emotionally impactful in those participants at higher actual CVD risk levels.
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Enfermedades Cardiovasculares/prevención & control , Conductas Relacionadas con la Salud , Conocimientos, Actitudes y Práctica en Salud , Promoción de la Salud , Educación del Paciente como Asunto , Servicios Preventivos de Salud , Conducta de Reducción del Riesgo , Adulto , Enfermedades Cardiovasculares/etiología , Enfermedades Cardiovasculares/psicología , Distribución de Chi-Cuadrado , Comprensión , Emociones , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Percepción , Evaluación de Programas y Proyectos de Salud , Medición de Riesgo , Factores de Riesgo , Reino UnidoRESUMEN
Five months after the Athens earthquake of September 1999, 178 children from three districts of Athens at increasing distances from the epicenter were administered questionnaires to identify symptoms of post-traumatic stress disorder (PTSD), anxiety and the extent of personal threat experienced. It was found that PTSD and anxiety symptoms were significantly related to proximity to the epicenter, exposure to threat and female gender. Age did not have a significant main effect on either anxiety or PTSD symptoms, but there were significant interactions between age and the other main variables. In the region closest to the epicenter, the youngest children reported the highest PTSD and anxiety symptom scores, but in the group furthest from the epicenter the older children reported the highest PTSD and anxiety symptom scores. These findings were discussed in relation to direct and media-imparted exposure to the earthquake.