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1.
Diabetes Res Clin Pract ; 171: 108557, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33242517

RESUMO

AIMS: To determine whether loss of muscle mass (approximated using fat free mass [FFM]) is associated with risk for type 2 diabetes mellitus (T2DM) in Hispanic/Latino adults in the United States. METHODS: Participants were Hispanic/Latino adults (18-74-year-olds) who completed Visit 2 of the Hispanic Community Health Study/Study of Latinos (HCHS/SOL; multi-site, prospective cohort study; 6.1-year follow-up) and did not have T2DM at baseline (n = 6264). At baseline and Visit 2, FFM was measured using bioelectrical impedance analysis and fasting glucose, HbA1c, and fasting insulin were measured by examiners. Diabetes was defined according to American Diabetes Association criteria. Survey-weighted Poisson regression models examined the association of percent change in relative FFM (%ΔFFM) with incident prediabetes and T2DM. Survey-weighted multivariable regression models examined associations of %ΔFFM with changes in glucose and insulin measures. RESULTS: Relative FFM declined by 2.1% between visits. %ΔFFM was inversely associated with incident prediabetes (p-for-trend = 0.001) and with changes in glucose and insulin measures (p-for-trend <0.0001). Findings were null, except for HOMA-IR, after adjustment for changes in adiposity measures. Associations were generally stronger for individuals with baseline overweight/obesity. CONCLUSIONS: Reducing loss of FFM during adulthood may reduce prediabetes risk (primarily insulin resistance), particularly among individuals with overweight/obesity.


Assuntos
Diabetes Mellitus Tipo 2/etiologia , Força Muscular/fisiologia , Saúde Pública/métodos , Adolescente , Adulto , Idoso , Diabetes Mellitus Tipo 2/patologia , Feminino , Hispânico ou Latino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Fatores de Risco , Estados Unidos , Adulto Jovem
2.
Obes Sci Pract ; 4(4): 387-395, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30151233

RESUMO

OBJECTIVE: The objective of this study is to determine associations between anthropometry and echocardiographic measures of cardiac structure and function in Hispanic/Latinos. METHODS: A total of 1,824 participants from ECHO-SOL were included. We evaluated associations between echocardiographic measures of left ventricular structure and function and anthropometric measures using multivariable-adjusted linear and logistic regression models adjusting for traditional cardiovascular risk factors. RESULTS: The mean age was 56 ± 0.17 years, 57% were women. The mean body mass index (BMI) was 30 ± 9.4 kg m-2, waist circumference (WC) was 100 ± 18 cm, and waist-to-hip ratio (WHR) was 0.93 ± 0.15. Adjusted analysis showed that 5-unit increment in BMI and 5-cm increase in WC was associated with 3.4 ± 0.6 and 1.05 ± 0.05 g m-2.7 (p < 0.05 for both) higher left ventricular (LV) mass index, respectively. Similarly, 0.1-unit increment in WHR was associated with 2.0 ± 0.16 g m-2.7 higher LV mass index (p < 0.01). WHR was associated with 0.22 ± 0.08% decrease in ejection fraction (p < 0.05). Concomitantly, 5-unit increment in BMI and WC was associated with increased odds of abnormal LV geometry (odds ratio 1.40 and 1.16, p = 0.03 and <0.01, respectively); 0.1-unit increment in WHR was associated with increased odds of abnormal LV geometry (odds ratio 1.51, p < 0.01). CONCLUSIONS: Among Hispanic/Latinos, higher anthropometric measures were associated with adverse cardiac structure and function.

3.
AIDS Behav ; 19(8): 1388-97, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25234251

RESUMO

Most studies of psychosocial predictors of disease progression in HIV have not considered norepinephrine (NE), a neurohormone related to emotion and stress, even though NE has been related to accelerated viral replication in vitro and impaired response to antiretroviral therapy (ART). We therefore examined NE, cortisol, depression, hopelessness, coping, and life event stress as predictors of HIV progression in a diverse sample. Participants (n = 177) completed psychological assessment, blood draws [CD4, viral load (VL)], and a 15 h urine sample (NE, cortisol) every 6 months over 4 years. Hierarchical linear modeling (HLM) was used to model slope in CD4 and VL controlling for ART at every time point, gender, age, race, SES, and initial disease status. NE (as well as depression, hopelessness, and avoidant coping) significantly predicted a greater rate of decrease in CD4 and increase in VL. Cortisol was not significantly related to CD4, but predicted VL increase. To our knowledge, this is the first study relating NE, in vivo, to accelerated disease progression over an extended time. It also extends our previous 2 year study by relating depressed mood and coping to accelerated disease progression over 4 years.


Assuntos
Adaptação Psicológica , Contagem de Linfócito CD4 , Infecções por HIV/psicologia , Hidrocortisona/urina , Norepinefrina/urina , Apoio Social , Estresse Psicológico/sangue , Estresse Psicológico/urina , Carga Viral , Adulto , Antirretrovirais/farmacologia , Antirretrovirais/uso terapêutico , Aprendizagem da Esquiva , Biomarcadores/sangue , Depressão/psicologia , Transtorno Depressivo/diagnóstico , Transtorno Depressivo/psicologia , Progressão da Doença , Feminino , Seguimentos , Infecções por HIV/sangue , Infecções por HIV/tratamento farmacológico , Infecções por HIV/urina , Infecções por HIV/virologia , Humanos , Acontecimentos que Mudam a Vida , Masculino , Adesão à Medicação , Pessoa de Meia-Idade , Estudos Prospectivos , Estresse Psicológico/psicologia
4.
Prev Med Rep ; 2: 824-8, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26835248

RESUMO

The association between obesity and physical activity has not been widely examined in an ethnically diverse sample of Hispanic/Latino adults in the US. A cross-sectional analysis of 16,094 Hispanic/Latino adults 18-74 years was conducted from the multi-site Hispanic Community Health Study/Study of Latinos (HCHS/SOL). Body mass index (BMI) was measured and categorized into normal, overweight, and obese; underweight participants were excluded from analyses. Physical activity was measured using the 16-item Global Physical Activity Questionnaire and by an Actical accelerometer. Minutes/day of physical activity and prevalence of engaging in ≥ 150 moderate-vigorous physical activity (MVPA) minutes/week were estimated by BMI group and sex adjusting for covariates. No adjusted differences were observed in self-reported moderate (MPA), vigorous (VPA), or MVPA across BMI groups. Accelerometry-measured MPA, VPA, and MVPA were significantly higher for the normal weight (females: 18.9, 3.8, 22.6 min/day; males: 28.2, 6.1, 34.3 min/day, respectively) compared to the obese group (females: 15.3, 1.5, 16.8 min/day; males: 23.5, 3.6, 27.1 min/day, respectively). The prevalence of engaging in ≥ 150 MVPA minutes/week using accelerometers was lower compared to the self-reported measures. Efforts are needed to reach the Hispanic/Latino population to increase opportunities for an active lifestyle that could reduce obesity in this population at high risk for metabolic disorders.

5.
Diabet Med ; 31(5): 630-6, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24344735

RESUMO

AIMS: The addition of the 1-h plasma glucose concentration measure from an oral glucose tolerance test to prediction models of future Type 2 diabetes has shown to significantly strengthen their predictive power. The present study examined the relationship between severity of depressive symptoms and hyperglycaemia, focusing on the 1-h glucose concentration vs. fasting and 2-h glucose measures from the oral glucose tolerance test. METHODS: Participants included 140 adults with the metabolic syndrome and without diabetes who completed a baseline psychobiological assessment and a 2-h oral glucose tolerance test, with measurements taken every 30 min. Depressive symptoms were assessed using the Beck Depression Inventory. RESULTS: Multivariate linear regression revealed that higher levels of depressive symptoms were associated with higher levels of 1-h plasma glucose concentrations after adjusting for age, gender, ethnicity, BMI, antidepressant use and high-sensitivity C-reactive protein. Results were maintained after controlling for fasting glucose as well as for indices of insulin resistance and secretion. Neither fasting nor 2-h plasma glucose concentrations were significantly associated with depressive symptoms. CONCLUSIONS: Elevated depressive symptoms in persons with the metabolic syndrome were associated with greater glycaemic excursion 1-h following a glucose load that was not accounted for by differences in insulin secretory function or insulin sensitivity. Consistent with previous findings, this study highlights the value of the 1-h plasma glucose measurement from the oral glucose tolerance test in the relation between depressive symptoms and glucose metabolism as an indicator of metabolic abnormalities not visible when focusing on fasting and 2-h post-oral glucose tolerance test measurements alone.


Assuntos
Glicemia/metabolismo , Depressão/diagnóstico , Síndrome Metabólica/sangue , Síndrome Metabólica/psicologia , Índice de Gravidade de Doença , Adulto , Idoso , Depressão/sangue , Depressão/psicologia , Feminino , Teste de Tolerância a Glucose , Humanos , Resistência à Insulina/fisiologia , Modelos Lineares , Masculino , Síndrome Metabólica/fisiopatologia , Pessoa de Meia-Idade , Testes Psicológicos , Fatores de Tempo
6.
AIDS Care ; 19(2): 215-9, 2007 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17364401

RESUMO

This study assessed whether perceived stress as measured by the Perceived Stress Scale (PSS) was associated with a decline in CD4+ cell counts over a six-month period in 59 men and 41 women living with HIV-1. Participants underwent psychological and medical assessment at the study entry (baseline) and again at six months post-baseline. In a hierarchical regression model controlling for sociodemographic (e.g. age, gender, education, income) and disease-related variables (e.g. duration of antiretroviral treatment, antiretroviral treatment and adherence, CD4+ cell count and viral load), perceived stress was associated with the decline in CD4+ cell count over the six-month period. These findings suggest perceived psychosocial stress is associated with CD4+ cell count decline independent of sociodemographic factors and disease status among men and women on antiretroviral medication for HIV/AIDS.


Assuntos
Antirretrovirais/uso terapêutico , Infecções por HIV/psicologia , Cooperação do Paciente/psicologia , Estresse Psicológico/etiologia , Adulto , Idoso , Contagem de Linfócito CD4 , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/imunologia , Humanos , Masculino , Pessoa de Meia-Idade , Fatores Socioeconômicos , Espanha , Estresse Psicológico/imunologia , Carga Viral
7.
AIDS Care ; 17(2): 222-36, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15763716

RESUMO

The purpose of the present study was to determine whether changes in self-efficacy over time would be related to changes in disease progression markers (CD4, viral load) in a sample of women with AIDS. A self-efficacy measure was developed and two sub-scales emerged via factor analysis of 391 HIV-positive women: AIDS Self-efficacy and Cognitive Behavioral Skills Self-efficacy. Subsequently, the sub-scales and an additional adherence self-efficacy item were given to 56 HIV-positive women who were measured at two time points three months apart. Half of these women were randomly assigned to a CB intervention and half to a low intensity comparison condition. Increases in AIDS Self-efficacy over the three-month period were significantly related to increases in CD4 and decreases in viral load. Similarly, increases in Cognitive Behavioral Skills Self-efficacy were significantly related to decreases in distress over time. Findings were maintained within the intervention group alone. Interestingly, increases in cognitive behavioral skills self-efficacy and increases in the self-efficacy adherence item were also significantly related to decreases in viral load. Implications of the findings and suggestions for future research are discussed.


Assuntos
Síndrome da Imunodeficiência Adquirida/psicologia , Linfócitos T CD4-Positivos/metabolismo , Linfócitos T CD8-Positivos/metabolismo , Autoeficácia , Carga Viral , Síndrome da Imunodeficiência Adquirida/imunologia , Síndrome da Imunodeficiência Adquirida/virologia , Adulto , Afeto , Análise de Variância , Terapia Comportamental , Progressão da Doença , Feminino , Humanos , Cooperação do Paciente
8.
Gesundheitswesen ; 67(1): 1-8, 2005 Jan.
Artigo em Alemão | MEDLINE | ID: mdl-15672300

RESUMO

Psychosocial risk factors like low socio-economic status, lack of social support and social isolation, chronic work or family stress, as well as negative emotions, e. g. depression and hostility, contribute significantly to the development and adverse outcome of coronary heart disease (CHD). Negative effects of psychosocial risk factors are conveyed via behavioural pathways including unhealthy lifestyle, e. g. food choice, smoking, sedentary life, inadequate utilisation of medical resources, and psychobiological mechanisms like disturbed autonomic and hormonal regulation: all these factors contribute to metabolic dysfunction and inflammatory and haemostatic processes, which are directly involved in the pathogenesis of CHD. Interventions to improve pychosocial factors are available and have demonstrated positive effects on risk factors and - at least in part - on CHD morbidity and mortality. The prevention of CHD should therefore include screening for psychosocial risk factors and adequate interventions. Recommedations for the screening of risk factors, behavioural change and further management of psychosocial risk factors in clinical practice are pointed out.


Assuntos
Doença das Coronárias , Doença das Coronárias/epidemiologia , Doença das Coronárias/etiologia , Doença das Coronárias/prevenção & controle , Doença das Coronárias/psicologia , Depressão/complicações , Hostilidade , Humanos , Relações Médico-Paciente , Fatores de Risco , Isolamento Social , Fatores Socioeconômicos , Estresse Psicológico/complicações , Personalidade Tipo A
9.
Psychoneuroendocrinology ; 29(7): 861-6, 2004 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-15177701

RESUMO

Social environment influences the progression of atherosclerosis in an important experimental model of disease, the Watanabe Heritable Hyperlipidemic rabbit (WHHL). Although the hypothalamic-pituitary-adrenocortical (HPA) system is likely to play an important role in the behavioral modulation of disease, relatively little is known about the glucocorticoid responses in these animals, or in other strains of rabbits. The purpose of the present study was to: (1) evaluate the rabbit glucocorticoid circadian rhythm, (2) compare plasma cortisol and corticosterone responses to social stress, and (3) examine strain differences (i.e., WHHL vs. New Zealand White (NZW)) in rabbit glucocorticoid responses to assess whether WHHLs have an aberrant HPA system. It was found that male rabbits secrete both corticosterone and cortisol in a circadian rhythm that peaks in the afternoon and reaches a nadir at 0600 h, i.e., approximately 12 h out-of-phase with the human glucocorticoid rhythm. Both glucocorticoids responded similarly to social stress induced by repeated daily 4 h pairings with another male rabbit; after 10 days of pairings, glucorticoid values were significantly correlated with the amount of defensive agonistic behavior exhibited. Finally, there were no significant strain differences in glucocorticoid circadian rhythms, baselines, or responses to social stress. These data suggest that glucocorticoid responses (i.e., circadian rhythms, responses to social stress) in the WHHL are similar to glucocorticoid responses in standard laboratory white rabbits.


Assuntos
Ritmo Circadiano/fisiologia , Corticosterona/sangue , Hidrocortisona/sangue , Hiperlipidemias/sangue , Estresse Psicológico/sangue , Animais , Modelos Animais de Doenças , Glucocorticoides/sangue , Hiperlipidemias/genética , Hiperlipidemias/fisiopatologia , Sistema Hipotálamo-Hipofisário/fisiologia , Masculino , Sistema Hipófise-Suprarrenal/fisiologia , Coelhos , Meio Social , Especificidade da Espécie
10.
Eur J Clin Nutr ; 58(4): 696-9, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15042140

RESUMO

OBJECTIVE: To examine the relationships between TNF-alpha, obesity, and insulin resistance among prepubescent children. DESIGN: Cross-sectional study. SETTING AND SUBJECTS: Data were collected from 112 nondiabetic Latino schoolchildren from public schools in three South Florida communities. Of the enrolled participants, 43.8% were obese (BMI 95th percentile) and 51.8% presented with a family history of type 2 diabetes mellitus (T2DM). With one exception, all demonstrated normal glucose tolerance. INTERVENTIONS: Plasma TNF-alpha levels were determined with enzyme-linked immunosorbance assay (ELISA). Homeostasis model assessment (HOMA-IR) was calculated as an index of insulin resistance. Mean levels of TNF-alpha among obese vs nonobese children were compared with a one-way analysis of variance with two groups, and the association between TNF-alpha and HOMA-IR was assessed with a Pearson's correlation. RESULTS: Higher circulating TNF-alpha levels were revealed among nonobese vs obese children. Nonobese girls demonstrated higher TNF-alpha levels than obese girls, whereas there were no significant differences for boys. There were no significant differences after stratifying for family history of T2DM. There was a modest relationship between increased TNF-alpha levels and decreased insulin resistance. CONCLUSIONS: The observed elevated circulating TNF-alpha concentrations among leaner participants may reflect an inflammatory process that has been associated with higher levels of physical fitness in both adults and prepubescent children. This effect may remain stronger for prepubescent girls, and the mechanism may be attenuated by the hormonal changes that occur with the onset of puberty.


Assuntos
Hispânico ou Latino , Obesidade/sangue , Fator de Necrose Tumoral alfa/metabolismo , Índice de Massa Corporal , Criança , Estudos Transversais , Feminino , Florida/etnologia , Humanos , Resistência à Insulina , Masculino , Fatores Sexuais
11.
AIDS Care ; 15(4): 463-74, 2003 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-14509861

RESUMO

This study examined the effects of a ten-session cognitive-behavioural stress management/expressive supportive therapy (CBSM+) intervention on adherence to antiretroviral medication. Although the intervention was not designed to influence adherence, it was theorized that improved coping and social support could enhance adherence. Women with AIDS (N = 174) in Miami, New York and New Jersey, USA, were randomized to a group CBSM+ intervention or individual control condition. Participants were African American (55%), Latina (18%) and Caribbean (18%) with drug (55%) and/or alcohol (32%) histories. Participants were assessed on self-reported medication adherence over seven days, HIV-related coping strategies and beliefs regarding HIV medication. Baseline overall self-reported adherence rates were moderate and related to coping strategies and HIV medication beliefs. Low adherent (80%) participants in the intervention condition increased their mean self-reported medication adherence (30.4% increase, t44 = 3.1, p < 0.01), whereas low adherent women in the control condition showed a non-significant trend (19.6% increase, t44 = 2.0, p > 0.05). The intervention did not improve adherence in this population; conditions did not differ significantly on self-reported adherence. Low adhering intervention participants significantly decreased levels of denial-based coping (F1,88 = 5.97, p < 0.05). Results suggest that future interventions should utilize group formats and address adherence using coping and medication-knowledge focused strategies.


Assuntos
Adaptação Psicológica , Fármacos Anti-HIV/uso terapêutico , Terapia Cognitivo-Comportamental/métodos , Infecções por HIV/tratamento farmacológico , Cooperação do Paciente/psicologia , Síndrome da Imunodeficiência Adquirida/tratamento farmacológico , Síndrome da Imunodeficiência Adquirida/psicologia , Adulto , Feminino , Infecções por HIV/psicologia , Humanos , Apoio Social , Estresse Psicológico/terapia
12.
Clin Exp Hypertens ; 23(8): 645-56, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11728009

RESUMO

The present study examined whether alterations in the cardiac baroreceptor reflex in hypertension may be a function of constitutional differences associated with gender and age. These hypotheses were tested using a cross-sectional design that compared 20 normotensive and 21 hypertensive men and women of varying age for differences in baroreceptor reflex sensitivity and response latency for heart rate, obtained using a modified bolus phenylephrine (Oxford) method. Relative to their respective normotensive controls, baroreceptor reflex sensitivity was reduced in hypertensive men, but not in hypertensive women. Among normotensive subjects, men had greater baroreceptor reflex sensitivity than women. Independent from the effects associated with differences in blood pressure, age was not a significant predictor of reduction in baroreceptor reflex sensitivity. However, a combination of high blood pressure and older age was associated with a significant increase in baroreceptor reflex response time. In summary, gender and aging interacted with hypertension to alter two different aspects of the baroreceptor reflex. These results provide a preliminary indication that a decline in arterial baroreflex sensitivity may be more specific to hypertension in men than in women. Prolongation in baroreflex response latency in older hypertensive subjects also suggested that aging and hypertension may have a synergistic effect on cardiac parasympathetic function.


Assuntos
Barorreflexo/fisiologia , Coração/fisiopatologia , Hipertensão/fisiopatologia , Adulto , Fatores Etários , Barorreflexo/efeitos dos fármacos , Pressão Sanguínea/efeitos dos fármacos , Estudos Transversais , Feminino , Coração/efeitos dos fármacos , Frequência Cardíaca/efeitos dos fármacos , Humanos , Masculino , Pessoa de Meia-Idade , Fenilefrina/farmacologia , Caracteres Sexuais
13.
AIDS ; 15(16): 2065-73, 2001 Nov 09.
Artigo em Inglês | MEDLINE | ID: mdl-11684925

RESUMO

OBJECTIVE: This study examines whether there may be an immune component that protects a relatively rare group of HIV-infected people with very low CD4 cell counts (< or = 50 x 10(6)/l) who have prolonged asymptomatic periods. DESIGN/METHODS: Three groups were recruited in Miami: (i) healthy low CD4 cell count patients (HLC; n = 30) who, for 9 months had < 50 x 10(6) CD4 cells/l, were asymptomatic and were not on protease inhibitors during that time; (ii) HIV comparison group (Comp; n = 60) who had CD4 cell counts predominantly 150 x 10(6) to 400 x 10(6)/l and never had AIDS Category C symptoms; this group was also followed for CD4 cell count and viral load change over 6 months; and (iii) healthy community controls (n = 33). The study was replicated at the University of California at Los Angeles (UCLA) with HLC (n = 31) versus HIV-negative laboratory controls (n = 28). RESULTS: The HLC patients were significantly higher than the Comp group on natural killer cell cytotoxicity (NKCC) and natural killer cell number (NK#) despite their lower CD4 cell numbers and higher viral loads. In fact, there was no difference between the HLC group and the healthy community control group in NK# or NKCC. The NK findings were replicated at UCLA. A retrospective analysis showing that higher NKCC was related to fewer prior symptoms in the HLC group, and prospective analysis in the Comp group showing that NK# predicted a lower increase in viral load over 6 months further supported the importance of NK# and NKCC. CONCLUSIONS: Non-specific cellular immunity may be a factor protecting the health of HIV sero-positive individuals with very low CD4 cell counts.


Assuntos
Síndrome da Imunodeficiência Adquirida/imunologia , Síndrome da Imunodeficiência Adquirida/fisiopatologia , Citotoxicidade Imunológica , HIV-1 , Células Matadoras Naturais/imunologia , Síndrome da Imunodeficiência Adquirida/tratamento farmacológico , Adulto , Contagem de Linfócito CD4 , Progressão da Doença , Feminino , HIV-1/isolamento & purificação , HIV-1/fisiologia , Humanos , Células Matadoras Naturais/citologia , Masculino , Inibidores de Proteases/uso terapêutico , Carga Viral
14.
Am J Epidemiol ; 154(8): 765-76, 2001 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-11590090

RESUMO

To develop a method for assessing preclinical cardiovascular disease risk, models of resting cardiovascular regulation and of insulin metabolic syndrome were derived from information collected from 1991 to 1996 in a culturally heterogeneous sample of 319 healthy men and women (aged 25-44 years) from Miami-Dade County, Florida. The model of resting cardiovascular regulation used 8 noninvasive measures of autonomic and cardiovascular function. Three factors were derived: 1) parasympathetic, 2) inotropy, and 3) systemic vascular resistance. The model of insulin metabolic syndrome used 12 measures assessing body mass, insulin, glucose, and lipid metabolism. Four factors were derived: 1) body mass and fat distribution, 2) glucose level and regulation, 3) insulin level and regulation, and 4) plasma lipid levels. Analyses of the association of the two models revealed that subjects with lower cardiac contractility had greater body mass, higher fasting and postload insulin and glucose levels, and lower insulin sensitivity. Subjects with greater vascular resistance had greater body mass, higher total cholesterol and triglyceride levels, and lower high density lipoprotein cholesterol levels. These findings indicate that preclinical cardiovascular disease risk may involve pathophysiologic processes in which cardiac inotropic and vasodilatory functions are linked to specific aspects of insulin metabolic syndrome.


Assuntos
Doenças Cardiovasculares/etiologia , Modelos Teóricos , Adulto , Glicemia/metabolismo , Composição Corporal , Índice de Massa Corporal , Doenças Cardiovasculares/epidemiologia , Feminino , Florida/epidemiologia , Humanos , Insulina/sangue , Lipídeos/sangue , Masculino , Fatores de Risco , Resistência Vascular
15.
J Hypertens ; 19(1): 21-7, 2001 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-11204300

RESUMO

OBJECTIVES: The goal of this study was to compare the cardiovascular responses to behavioural stressors of three groups of adolescents who differed in blood pressure status across assessments. DESIGN: Casual blood pressure of adolescents who were identified as having elevated blood pressure during a school screen was re-evaluated in the laboratory. The adolescents were classified into two groups: (i) those with consistently elevated blood pressure across school and laboratory assessments and (i) those with labile blood pressure whose blood pressure in the laboratory was below 130/80 mmHg. A comparison group of adolescents with consistently normal blood pressure was also included. METHODS: Cardiovascular parameters were assessed during rest and during two behavioural stressors, the evaluated speaking task and the mirror tracing task. RESULTS: Adolescents with elevated blood pressure were more vascularly responsive across stressors than adolescents with labile blood pressure, who, in turn, were more reactive than adolescents with normal blood pressure. CONCLUSIONS: These results suggest that vascular reactivity to behavioural stressors may be useful in predicting risk of hypertension because of its sensitivity in distinguishing adolescents with consistently elevated blood pressure from those with labile blood pressure and those with normal blood pressure.


Assuntos
Comportamento , Pressão Sanguínea , Sistema Cardiovascular/fisiopatologia , Hipertensão/psicologia , Estresse Psicológico/fisiopatologia , Adolescente , Comportamento/fisiologia , Pressão Sanguínea/fisiologia , Índice de Massa Corporal , Eletrocardiografia , Feminino , Humanos , Hipertensão/sangue , Hipertensão/fisiopatologia , Masculino , Fatores de Risco , Estresse Psicológico/sangue , Estresse Psicológico/complicações , Estresse Psicológico/psicologia , Triglicerídeos/sangue
16.
Annu Rev Psychol ; 52: 555-80, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11148317

RESUMO

Psychosocial factors appear to impact upon the development and progression of such chronic diseases as coronary heart disease, cancer, and HIV/AIDS. Similarly, psychosocial interventions have been shown to improve the quality of life of patients with established disease and seem to influence biological processes thought to ameliorate disease progression. Small-scale studies are useful for specifying the conditions under which psychosocial factors may or may not impact quality of life, biological factors, and disease progression. They are also useful for informing us about the conditions under which psychosocial interventions can serve as adjuvants (e.g. adherence training) to medical treatments. Only large-scale clinical trials, however, can determine the extent to which these psychosocial interventions may impact morbidity and mortality.


Assuntos
Doença Crônica , Comportamentos Relacionados com a Saúde , Promoção da Saúde , Serviços de Saúde , Teoria Psicológica , Humanos , Qualidade de Vida , Fatores de Risco
17.
Psychophysiology ; 38(6): 951-60, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-12240671

RESUMO

Latent growth curve methodology was used to model systolic blood pressure reactivity and recovery from the cold pressor test. A piecewise regression approach permitted the separate but simultaneous modeling of the two components (reactivity and recovery) of the stress process. Data came from a study of 99 participants classified on the basis of gender, ethnicity, and family history of hypertension. Their systolic blood pressure was assessed at rest, during the cold pressor test, and during a task recovery period. A measure of task appraisal and readings from ambulatory blood pressure monitoring during a workday were also examined. The article illustrates a step-by-step approach to modeling reactivity and recovery. Results indicated that both reactivity and recovery were associated with subsequent systolic blood pressure at work.


Assuntos
Pressão Sanguínea/fisiologia , Temperatura Baixa/efeitos adversos , Medição da Dor , Adulto , Algoritmos , Monitorização Ambulatorial da Pressão Arterial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Modelos Biológicos , Pressão/efeitos adversos
18.
J Urban Health ; 78(4): 593-604, 2001 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11796806

RESUMO

Interventions aimed at reducing sexual transmission of human immunodeficiency virus/sexually transmitted diseases (HIV/STDs) have focused primarily on male condom use among seronegative men and women. However, female-controlled sexual barriers (female condoms and vaginal microbicides) offer women living with acquired immunodeficiency syndrome (AIDS) alternative methods to protect themselves and others from disease transmission. A pilot behavioral intervention was conducted to increase sexual barrier use and enhance and assess factors related to acceptability. Participants (N = 178) were drawn from the Stress Management and Relaxation Training with Expressive Supportive Therapy (SMART/EST) Women's Project, a multisite phase III clinical trial for women living with AIDS (Miami, FL; New York City, NY; Newark, NJ). Intervention participants (n = 89) were matched for age and ethnicity with control condition participants (n = 89). Women were African American (52%), Haitian (15%), Hispanic (19%), Caucasian (10%), and other ethnicities (4%). The intervention condition received barrier products (male and female condoms and spermicides based on nonoxynol-9 in the form of vaginal gel, film, and suppositories) during three sessions held over 3 months. Data on barrier use and acceptability were analyzed at baseline and 3 and 9 months postintervention. Use of N-9 spermicides on a trial basis increased significantly by 3 months in the intervention conditions (22%-51%, P <.05). Cultural differences in acceptability were greatest between Haitian women and women in other ethnic groups. Exposure to this pilot behavioral intervention was associated with increased acceptability and use of chemical barriers without decreased use of male condoms.


Assuntos
Síndrome da Imunodeficiência Adquirida/prevenção & controle , Atitude Frente a Saúde/etnologia , Preservativos Femininos/estatística & dados numéricos , Nonoxinol/administração & dosagem , Sexo Seguro/etnologia , Infecções Sexualmente Transmissíveis/prevenção & controle , Espermicidas/administração & dosagem , Síndrome da Imunodeficiência Adquirida/etnologia , Síndrome da Imunodeficiência Adquirida/transmissão , Adulto , Feminino , Humanos , Avaliação de Resultados em Cuidados de Saúde , Projetos Piloto , Infecções Sexualmente Transmissíveis/etnologia , Infecções Sexualmente Transmissíveis/transmissão , Estados Unidos
19.
Clin Auton Res ; 11(5): 319-26, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11758799

RESUMO

Autonomic dysfunction in persons with acquired immune deficiency syndrome (AIDS) has been reported previously but its incidence in early stage HIV infection and its relation to cardiovascular function have not been fully examined. The present study evaluated cardiovascular and autonomic function in 55 HIV-seronegative, and 52 HIV-asymptomatic and 31 HIV-symptomatic seropositive men. Measures of hemodynamic and autonomic function were obtained at rest and during a standardized battery of autonomic tests. Results were compared across groups while controlling for age, body mass, and physical activity. Analyses indicated that measures of autonomic function did not differ among groups. However, at rest, both HIV seropositive groups exhibited diminished stroke volume and elevated diastolic blood pressure, albeit within normotensive levels. In addition, the ability to sustain a blood pressure response during prolonged challenge and the relationship between stroke volume and baroreceptor/vagal responsiveness were disrupted in the HIV-symptomatic group. Therefore, in the pre-AIDS stages of infection, autonomic functioning appeared intact; yet alterations in baroreceptor/vagal function associated with depressed myocardial function may be an early warning signal reflecting cardiovascular pathological processes potentially exacerbated by HIV spectrum disease.


Assuntos
Sistema Nervoso Autônomo/fisiopatologia , Infecções por HIV/fisiopatologia , Coração/fisiopatologia , Hemodinâmica/fisiologia , Adulto , Envelhecimento/fisiologia , Progressão da Doença , Feminino , Soropositividade para HIV , Coração/inervação , Testes de Função Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Reflexo/fisiologia , Descanso/fisiologia
20.
JAMA ; 284(23): 3008-14, 2000 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-11122587

RESUMO

CONTEXT: Psychosocial stress has been associated with incidence of coronary heart disease (CHD) in men, but the prognostic impact of such stress rarely has been studied in women. OBJECTIVE: To investigate the prognostic impact of psychosocial work stress and marital stress among women with CHD. DESIGN AND SETTING: Population-based, prospective follow-up study conducted in the city of Stockholm, Sweden. PARTICIPANTS: A total of 292 consecutive female patients aged 30 to 65 years (n = 279 working or cohabiting with a male partner) who were hospitalized for acute myocardial infarction or unstable angina pectoris between February 1991 and February 1994. Patients were followed up from the date of clinical examination until August 1997 (median, 4.8 years). MAIN OUTCOME MEASURES: Recurrent coronary events, including cardiac death, acute myocardial infarction, and revascularization procedures, by marital stress (assessed using the Stockholm Marital Stress Scale, a structured interview) and by work stress (assessed using the ratio of work demand to work control). RESULTS: Among women who were married or cohabiting with a male partner (n = 187), marital stress was associated with a 2.9-fold (95% confidence interval [CI], 1.3-6. 5) increased risk of recurrent events after adjustment for age, estrogen status, education level, smoking, diagnosis at index event, diabetes mellitus, systolic blood pressure, smoking, triglyceride level, high-density lipoprotein cholesterol level, and left ventricular dysfunction. Among working women (n = 200), work stress did not significantly predict recurrent coronary events (hazard ratio, 1.6; 95% CI, 0.8-3.3). CONCLUSIONS: Our results indicate that marital stress but not work stress predicts poor prognosis in women aged 30 to 65 years with CHD. These findings differ from previous findings in men and suggest that specific preventive measures be tailored to the needs of women with CHD.


Assuntos
Doença das Coronárias/epidemiologia , Casamento/psicologia , Estresse Psicológico , Adulto , Angina Instável/epidemiologia , Doença das Coronárias/etiologia , Emprego/psicologia , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Infarto do Miocárdio/epidemiologia , Prognóstico , Modelos de Riscos Proporcionais , Estresse Psicológico/complicações , Estresse Psicológico/diagnóstico , Estresse Psicológico/etiologia , Suécia/epidemiologia
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